Three-Phase Wound-Rotor Induction Machine with Rotor Resistance

Size: px
Start display at page:

Download "Three-Phase Wound-Rotor Induction Machine with Rotor Resistance"

Transcription

1 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce EXERCISE OBJECTIVE When you hve completed this exercise, you will know the effects of vrying the rotor resistnce of three-phse wound-rotor induction mchine on the mchine strting current nd torque, s well s on the mchine rottion speed nd efficiency. DISCUSSION OUTLINE The Discussion of this exercise covers the following points: Three-phse wound-rotor induction mchine strting current nd torque versus the rotor resistnce Vrying the speed of three-phse wound-rotor induction mchine through the rotor resistnce DISCUSSION Three-phse wound-rotor induction mchine strting current nd torque versus the rotor resistnce Three-phse wound-rotor induction mchines hve n importnt dvntge over three-phse squirrel-cge induction mchines during strt-up: it is possible to reduce the strting current while incresing the strting torque. The bility of wound-rotor induction mchines to reduce the strting current is crucil for lrgesize induction mchines (0.75 MW, or 1000 hp, nd more) becuse these mchines operte with lrge currents, especilly during strt-up. During this period, the current requirements of lrge squirrel-cge induction mchines cn be s high s four times the mchine nominl current. Such high current requirements put gret strin on the c power network nd mke lrge squirrel-cge induction mchines imprcticl or even impossible to strt. Lrge-size induction mchines re lso required to produce high strting torques s they re generlly used to drive high-inerti lods (e.g., lrge pumps, crnes, grinders). In such cses, the bility of three-phse wound-rotor induction mchines to increse the mchine strting torque is beneficil becuse it reduces the mount of time required for the mchine to rech the nominl speed nd shortens the mchine strt-up time (nd thus, the mount of time during which the current drwn by the mchine is mny times the nominl current). The following two sections explin in more detil the bility of three-phse woundrotor induction mchines to reduce the mchine current nd increse the mchine torque during strt-up. Festo Didctic

2 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Discussion Three-phse wound-rotor induction mchine strting current The strting current of three-phse wound-rotor induction mchine cn be lowered by incresing the mchine rotor resistnce. The reltionship between the mount of current drwn by three-phse wound-rotor induction mchine s function of the mchine speed for different rotor resistnce vlues is shown in Figure Mchine current (% of nominl current) Short-circuited rotor Low rotor resistnce Moderte rotor resistnce High rotor resistnce Mchine speed (% of synchronous speed) Figure 4. Three-phse wound-rotor induction mchine strting current s function of the mchine speed for different rotor resistnce vlues. As Figure 4 shows, the higher the rotor resistnce of three-phse wound-rotor induction mchine, the lower the mchine strting current. For instnce, pssing from short-circuited rotor condition to high rotor resistnce condition reduces the mchine strting current from bout 400% of the mchine nominl current to bout 200% of the mchine nominl current. As lrge-size mchines require lrge mount of current during strt-up, such gin cn mke n enormous difference. Figure 4 lso shows tht, s the mchine ners the synchronous speed, the effect of the mchine rotor resistnce on the mchine current becomes less nd less importnt until, t the synchronous speed, the mchine current is the sme for ny rotor resistnce. 16 Festo Didctic

3 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Discussion Three-phse wound-rotor induction mchine strting torque The strting torque of three-phse wound-rotor induction mchine, like its strting current, cn be djusted by chnging the rotor resistnce. Incresing the rotor resistnce of three-phse wound-rotor induction mchine hs the effect of shifting towrd the left the brekdown torque region on the torque-versus-speed curve. The reltionship between the torque nd speed of three-phse woundrotor induction mchine for different rotor resistnce vlues is shown in Figure Short-circuited rotor Mchine torque (% of nominl torque) Low rotor resistnce Moderte rotor resistnce High rotor resistnce Mchine speed (% of synchronous speed) Figure 5. Three-phse wound-rotor induction mchine torque-versus-speed curves for different rotor resistnce vlues. As Figure 5 shows, the higher the rotor resistnce of the three-phse wound-rotor induction mchine (up to certin vlue), the higher the mchine strting torque. However, s the mchine speed increses, high rotor resistnce cuses the mchine torque to decrese more rpidly thn when lower rotor resistnce vlues re used. For this reson, fter the mchine initil strt-up, the rotor resistnce is usully progressively lowered, or simply short-circuited, in order to reduce the rotor resistnce to minimum nd optimize the mchine torque. Figure 6 shows on the sme grph both the current-versus-speed nd torqueversus-speed curves of three-phse wound-rotor induction mchine for different rotor resistnce vlues. As you cn see, when the mchine rotor resistnce is high, the strting current is miniml nd the strting torque is mximl. This is perfectly Festo Didctic

4 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Discussion dpted to pplictions where lrge induction mchines re strted under hevy mechnicl lods Short-circuited rotor Mchine current (% of nominl current) Mchine torque (% of nominl torque) Low rotor resistnce Moderte rotor resistnce High rotor resistnce Mchine speed (% of synchronous speed) Figure 6. Three-phse wound-rotor induction mchine current-versus-speed nd torque-versusspeed curves for different rotor resistnce vlues. Vrying the speed of three-phse wound-rotor induction mchine through the rotor resistnce Another dvntge three-phse wound-rotor induction mchines hve over threephse squirrel-cge induction mchines is the bility to djust the mchine speed. Trditionlly, this bility ws used in pplictions requiring the mchine to run over wide rnge of speeds. Nowdys, however, the bility to djust the speed of three-phse wound-rotor induction mchines is less nd less used s the sme results cn be chieved more efficiently by controlling three-phse squirrel-cge induction mchines using vrible-frequency motor drives. It is possible to djust the speed of three-phse wound-rotor induction mchines by vrying the rotor resistnce. For ny given torque (within the norml operting rnge of the mchine), the higher the rotor resistnce, the lower the mchine rottion speed. This reltionship is illustrted in Figure 7. In this exmple, threephse wound-rotor induction mchine is coupled to constnt-torque brke tht produces constnt opposing torque. As you cn see, for given mchine torque during motor opertion, the mchine speed decreses s the mchine rotor resistnce increses. 18 Festo Didctic

5 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Discussion 200 Short-circuited rotor Mchine torque (% of nominl torque) Low rotor resistnce Moderte rotor resistnce Mchine speed vrition for given torque High rotor resistnce Mchine speed (% of synchronous speed) Figure 7. Three-phse wound-rotor induction mchine speed vrition for given torque for different rotor resistnce vlues. However, vrying the three-phse wound-rotor induction mchine speed in such wy hs drwbcks. The most importnt is tht it reduces the mchine efficiency. This is due to the fct tht dding resistnce to the mchine rotor increses the ctive power losses ( ) nd thus lowers the mchine efficiency. In ddition, the higher the rotor resistnce of three-phse wound-rotor induction mchine, the greter the vrition in the rottion speed s the torque vries. This reltionship is illustrted in Figure 8. As the figure shows, for given torque vrition, the resulting mchine speed vrition is much more importnt when the mchine rotor resistnce is high thn when the mchine rotor is short-circuited. This mens tht three-phse wound-rotor induction mchines hving high rotor resistnce re more susceptible to speed vritions s the lod torque chnges. Festo Didctic

6 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Discussion 200 Mchine torque vrition Short-circuited rotor Mchine torque (% of nominl torque) Low rotor resistnce Moderte rotor resistnce Mchine speed vrition s the mchine torque vries High rotor resistnce Mchine speed (% of synchronous speed) Figure 8. Three-phse wound-rotor induction mchine speed vrition s the mchine torque vries for different rotor resistnce vlues. 20 Festo Didctic

7 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure Outline PROCEDURE OUTLINE The Procedure is divided into the following sections: Set up nd connections Effect of the rotor resistnce on the opertion of three-phse woundrotor induction mchine PROCEDURE High voltges re present in this lbortory exercise. Do not mke or modify ny bnn jck connections with the power on unless otherwise specified. Set up nd connections In this section, you will set up circuit contining three-phse wound-rotor induction mchine coupled to prime mover/brke. You will then set the mesuring equipment required to study the three-phse wound-rotor induction mchine opertion when the rotor windings re interconnected through resistors. 1. Refer to the Equipment Utiliztion Chrt in Appendix A to obtin the list of equipment required to perform this exercise. Mke sure tht 32 teeth pulley is instlled on the shft of the Three-Phse Wound-Rotor Induction Mchine. If not, sk your instructor to instll the pulley required on the shft of the mchine. Appendix E shows how to replce the pulley instlled on the shft of mchine. Instll the required equipment in the Worksttion. Mke sure you use the sme Four-Qudrnt Dynmometer/Power Supply module s in Exercise 1 of this mnul by confirming tht the module s seril number is the sme s the seril number you recorded in the first step of Exercise 1. Mechniclly couple the Three-Phse Wound-Rotor Induction Mchine to the Four-Qudrnt Dynmometer/Power Supply using the timing belt (type 341L) supplied with the 32 teeth pulley. 2. Mke sure tht the c nd dc power switches on the Power Supply re set to the O (off) position, then connect the Power Supply to three-phse c power outlet. Mke sure tht the min power switch on the Four-Qudrnt Dynmometer/ Power Supply is set to the O (off) position, then connect its Power Input to n c power wll outlet. Connect the Power Input of the Dt Acquisition nd Control Interfce to 24 V c power supply. Festo Didctic

8 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure 3. Connect the USB port of the Dt Acquisition nd Control Interfce to USB port of the host computer. Connect the USB port of the Four-Qudrnt Dynmometer/Power Supply to USB port of the host computer. 4. Connect the equipment s shown in Figure 9. L1 40 A terminl L2 L3 40 A terminl Three-phse wound-rotor induction mchine Prime mover/ brke Locl c power network Voltge (V) Frequency (Hz) Rotor resistnce,, () Figure 9. Three-phse wound-rotor induction mchine with rotor resistnce coupled to prime mover/brke. 22 Festo Didctic

9 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure 5. Mke the necessry switch settings on the Resistive Lod module in order to obtin the rotor resistnce vlue required. The vlues of certin components used in the circuits of this mnul depend on your locl c power network voltge nd frequency. Whenever necessry, tble below the circuit digrm indictes the vlue of ech component for c power network voltges of 120 V, 220 V, nd 240 V, nd for c power network frequencies of 50 Hz nd 60 Hz. Mke sure to use the component vlues corresponding to your locl c power network voltge nd frequency. Appendix C lists the switch settings required on the Resistive Lod in order to obtin vrious resistnce vlues. 6. Turn the Four-Qudrnt Dynmometer/Power Supply on, then set the Operting Mode switch to Dynmometer. This setting llows the Four- Qudrnt Dynmometer/Power Supply to operte s prime mover, brke, or both, depending on the selected function. 7. Turn the host computer on, then strt the LVDAC-EMS softwre. In the LVDAC-EMS Strt-Up window, mke sure tht the Dt Acquisition nd Control Interfce nd the Four-Qudrnt Dynmometer/Power Supply re detected. Mke sure tht the Computer-Bsed Instrumenttion function for the Dt Acquisition nd Control Interfce is vilble. Select the network voltge nd frequency of your locl c power network, then click the OK button to close the LVDAC-EMS Strt-Up window. 8. In LVDAC-EMS, set the Rnge setting of current inputs I1 nd I2 to High. 9. In LVDAC-EMS, open the Four-Qudrnt Dynmometer/Power Supply window, then mke the following settings: Set the Function prmeter to Speed Sweep. Set the Strt Speed prmeter to 100 r/min bove the synchronous speed of the three-phse wound-rotor induction mchine. The synchronous speed of the Three-Phse Wound-Rotor Induction Mchine is 1500 r/min t locl c power network frequency of 50 Hz nd 1800 r/min t locl c power network frequency of 60 Hz. Set the Finish Speed prmeter to 200 r/min below the synchronous speed of the three-phse induction motor. Set the Number of Steps prmeter to 15 steps. Set the Step Durtion prmeter to 7 s. Set the Record Dt to Tble prmeter to Yes. Set the Pulley Rtio prmeter to 24:32. Festo Didctic

10 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure 10. In LVDAC-EMS, strt the Metering ppliction. Mke the required settings in order to mesure the rms vlues (c) of the three-phse wound-rotor induction mchine line current (input I1). Set two other meters to mesure the mchine ctive power nd rective power using the two-wttmeter method (meter function PQS1 PQS2). Finlly, set meter to mesure the mchine power fctor from inputs E1, I1, E2, nd I2 (meter function PF(EI1,EI2)). 11. In LVDAC-EMS, open the Dt Tble window. Set the Dt Tble to record the three-phse wound-rotor induction mchine speed, torque, nd mechnicl power indicted in the Four-Qudrnt Dynmometer/Power Supply window. Also, set the Dt Tble to record the three-phse wound-rotor induction mchine line current (input I1), ctive power, rective power, nd power fctor indicted in the Metering ppliction. Effect of the rotor resistnce on the opertion of three-phse wound-rotor induction mchine In this section, you will mke the three-phse wound-rotor induction mchine speed decrese by step from 100 r/min bove the mchine synchronous speed to 0 r/min, recording t ech step in the Dt Tble the mchine speed, torque, mechnicl power, line current, ctive power, rective power, nd power fctor. You will clculte the mchine efficiency using the recorded mchine mechnicl power nd ctive power vlues. On the sme grph, you will plot the torque versus speed curve when the rotor is short-circuited (using the results you obtined in the previous exercise), s well s when resistnce is dded to the rotor, nd interpret the results. Finlly, you will plot on the sme grph the efficiency versus mechnicl power curve when the rotor is short-circuited (using the results you obtined in the previous exercise), s well s when resistnce is dded to the rotor, nd interpret the results. 12. On the Power Supply, turn the three-phse c power source on. The Three-Phse Wound-Rotor Induction Mchine is fitted with n overvoltge protection circuit preventing the rotor voltge from reching vlues tht could dmge the mchine rotor windings. If the overvoltge protection trips when performing the mnipultion bove, turn the three-phse c power source off, wit few seconds, nd turn the three-phse c power on while pressing nd holding the Protection Override push-button on the Three-Phse Wound-Rotor Induction Mchine. Before strting the prime mover/brke (i.e., before strting the Speed Sweep function), mke sure tht the Three-Phse Wound-Rotor Induction Mchine is rotting in the clockwise direction. If so, proceed directly to the next step. Otherwise, turn the three-phse c power source off, invert the connections t two of the three phse terminls of the mchine sttor windings, then repet this step from the beginning. 24 Festo Didctic

11 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure 13. In the Four-Qudrnt Dynmometer/Power Supply window, strt the Speed Sweep function. 14. Wit for the Speed Sweep function to complete its sweep of the specified speed intervl. Then, in the Four-Qudrnt Dynmometer/Power Supply window, mke the following settings: Set the Strt Speed prmeter to 40 r/min below the speed vlue t which you set the Finish Speed prmeter in step 9. Set the Finish Speed prmeter to 0 r/min. Set the Number of Steps prmeter to vlue between 13 nd 16 steps. Mke sure tht the Step Durtion prmeter is set to 7 s. Mke sure tht the Record Dt to Tble prmeter is set to Yes. Mke sure tht the Pulley Rtio prmeter is set to 24: In the Four-Qudrnt Dynmometer/Power Supply window, strt the Speed Sweep function. Wit for the Speed Sweep function to complete its sweep of the specified speed intervl. If the overvoltge protection trips t the end of the speed sweep performed bove (i.e., when the speed of the three-phse wound-rotor induction mchine pproches 0 r/min), stop the Speed Sweep function, turn the three-phse c source power source off, delete the dt recorded to the Dt Tble during this speed sweep, turn the three-phse c power source on, nd strt the Speed Sweep function gin. This time, however, press nd hold the Protection Override push-button on the Three-Phse Wound-Rotor Induction Mchine s soon s the speed decreses below 200 r/min. Relese the push-button once the speed sweep is completed. 16. When ll dt hs been recorded, turn the three-phse c power source in the Power Supply off. Festo Didctic

12 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Procedure 17. In the Dt Tble window, sve the recorded dt, then export it to spredsheet ppliction. The mchine torque recorded when the mchine speed is equl to 0 r/min is slightly underestimted due to the wy friction compenstion is implemented in the Four-Qudrnt Dynmometer/Power Supply. In the spredsheet ppliction, dd new prmeter to the results: the threephse wound-rotor induction mchine efficiency. To clculte the mchine efficiency, use the following equtions: When the mchine mechnicl power is of positive polrity (i.e., when the mchine opertes s motor), divide ech mchine mechnicl power vlue by the corresponding mchine ctive power vlue, then multiply the result by 100 to express the efficiency s percentge. When the mchine mechnicl power is of negtive polrity (i.e., when the mchine opertes s genertor), divide ech mchine ctive power vlue by the corresponding mchine mechnicl power vlue, then multiply the result by 100. Do not clculte the mchine efficiency when the mchine mechnicl power is lower thn bout 50 W (positive or negtive). Also, in the spredsheet ppliction, mke sure tht ll power fctor vlues re of positive polrity by inverting the polrity of ll negtive power fctor vlues. 18. Plot on the sme grph curves of the three-phse wound-rotor induction mchine torque s function of the mchine speed when the rotor is shortcircuited, s well s when resistnce is dded to the rotor. Use the results you recorded in the previous exercise nd in this exercise to do so. Observe the grph you plotted. How does dding resistnce to the rotor ffect the strting torque of three-phse wound-rotor induction mchine? Compre the strting current (line current t speed of 0 r/min) of the threephse wound-rotor induction mchine with short-circuited rotor (recorded in the previous exercise) with the strting current of the three-phse wound-rotor induction mchine with rotor resistnce (recorded erlier in this exercise). How does dding resistnce to the rotor ffect the strting current of three-phse wound-rotor induction mchine? 26 Festo Didctic

13 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Conclusion Does this confirm tht three-phse wound-rotor induction mchine with dded resistnce t the rotor is perfectly dpted to pplictions where the mchine hs to strt under hevy mechnicl lods? Yes No 19. Observe the grph you plotted in the previous step. Wht is the effect, if ny, of dding resistnce to the rotor of three-phse wound-rotor induction mchine on the mchine torque versus speed curve? Do your results confirm tht incresing the resistnce t the rotor of threephse wound-rotor induction mchine chnges the mchine speed for given mchine torque? Yes No 20. Plot on the sme grph curves of the three-phse wound-rotor induction mchine efficiency s function of the mchine mechnicl power with short-circuited rotor, s well s with rotor resistnce, when the mchine opertes s motor ( 50 W). Use the results you recorded in the previous exercise nd in this exercise to do so. Do not plot on the grph the points recorded fter the motor mechnicl power strted to decrese fter hving reched mximl vlue. Observe the grph. Wht is the effect, if ny, of dding resistnce to the rotor of three-phse wound-rotor induction mchine on the mchine efficiency during motor opertion? 21. Close LVDAC-EMS, then turn off ll the equipment. Disconnect ll leds nd return them to their storge loction. Ask your instructor to replce the 32 teeth pulley instlled on the Three-Phse Wound-Rotor Induction Mchine with 24 teeth pulley. Appendix E shows how to replce the pulley instlled on the shft of mchine. CONCLUSION In this exercise, you lerned the effects of vrying the rotor resistnce of threephse wound-rotor induction mchine on the mchine strting current nd torque, s well s on the mchine rottion speed nd efficiency. Festo Didctic

14 Exercise 2 Three-Phse Wound-Rotor Induction Mchine with Rotor Resistnce Review Questions REVIEW QUESTIONS 1. Describe the effect of incresing the rotor resistnce of three-phse woundrotor induction mchine on the mchine strting current. 2. Describe the effect of incresing the rotor resistnce of three-phse woundrotor induction mchine on the mchine strting torque. 3. Why is the rotor resistnce of three-phse wound-rotor induction mchine usully short-circuited fter the mchine initil strt-up? 4. How is it possible to vry the speed of three-phse wound-rotor induction mchine? 5. Wht is the min drwbck of lowering the speed of three-phse woundrotor induction mchine using the mchine rotor resistnce? 28 Festo Didctic

Three-Phase Wound-Rotor Induction Machine with a Short- Circuited Rotor

Three-Phase Wound-Rotor Induction Machine with a Short- Circuited Rotor Exercise 1 Three-Phse Wound-Rotor Induction Mchine with Short- Circuited Rotor EXERCISE OBJECTIVE When you hve completed this exercise, you will know how three-phse woundrotor induction mchine cn operte

More information

2016 Prelim Essay Question 2

2016 Prelim Essay Question 2 216 Prelim Essy Question 2 In recent yers, the price of nturl fertilisers for orgnic brown rice production hs risen nd helthy living cmpigns re seeing more consumers switching from nonorgnic white rice

More information

Chapter 9. Quadratics

Chapter 9. Quadratics Chpter 9 Qudrtics Artificil Body Prts 9.1 Solving Qudrtic Equtions by Fctoring 9. Completing the Squre 9.3 The Qudrtic Formul 9.4 Eponentil Functions (Growth nd Decy) Chpter Review Chpter Test 147 Section

More information

A BEHAVIOR OF ELASTIC AND PLASTIC STRAIN FOR (α+γ) DUAL PHASE STAINLESS STEELS IN ROTATING BENDING TEST

A BEHAVIOR OF ELASTIC AND PLASTIC STRAIN FOR (α+γ) DUAL PHASE STAINLESS STEELS IN ROTATING BENDING TEST Copyright JCDS - Interntionl Centre for Diffrction Dt 24, Advnces in X-ry Anlysis, Volume 47. 39 ISSN 197-2 A BEHAVIOR OF ELASTIC AND LASTIC STRAIN FOR (+) DUAL HASE STAINLESS STEELS IN ROTATING BENDING

More information

[ HOCl] Chapter 16. Problem. Equilibria in Solutions of Weak Acids. Equilibria in Solutions of Weak Acids

[ HOCl] Chapter 16. Problem. Equilibria in Solutions of Weak Acids. Equilibria in Solutions of Weak Acids Equilibri in Solutions of Wek Acids Chpter 16 Acid-Bse Equilibri Dr. Peter Wrburton peterw@mun.c http://www.chem.mun.c/zcourses/1011.php The dissocition of wek cid is n equilibrium sitution with n equilibrium

More information

6.1 Damage Tolerance Analysis Procedure

6.1 Damage Tolerance Analysis Procedure 6. Dmge Tolernce Anlysis Procedure For intct structure the nlysis procedures for Slow Crck Growth nd Fil Sfe structure re essentilly the sme. An initil flw is ssumed nd its growth is nlyzed until filure

More information

P6.1. Magnetic position sensor with low coercivity material

P6.1. Magnetic position sensor with low coercivity material P6. Mgnetic position sensor with low coercivity mteril Jernce N., Frchon D. Moving Mgnet Technologies rue Christin Huygens, 25 Besnçon, Frnce. Introduction Mgnetic position sensors re widely used, especilly

More information

Nonlinear Mixed Effects Model for Swine Growth

Nonlinear Mixed Effects Model for Swine Growth Nonliner Mixed Effects Model for Swine Growth A. P. Schinckel nd B. A. Crig Deprtment of Animl Sciences nd Deprtment of Sttistics, Purdue University Introduction Severl nonliner growth functions model

More information

NOTICE CONCERNING COPYRIGHT RESTRICTIONS

NOTICE CONCERNING COPYRIGHT RESTRICTIONS NOTICE CONCERNING COPYRIGHT RESTRICTIONS This document my contin copyrighted mterils. These mterils hve been mde vilble for use in reserch, teching, nd privte study, but my not be used for ny commercil

More information

Small Business Cloud Services

Small Business Cloud Services Smll Business Cloud Services Summry. We re thick in the midst of historic se-chnge in computing. Like the emergence of personl computers, grphicl user interfces, nd mobile devices, the cloud is lredy profoundly

More information

PAPER CHEMISTRY, APPLETON, WISCONSIN IPC TECHNICAL PAPER SERIES NUMBER 163 W. J. WHITSITT OCTOBER, 1985

PAPER CHEMISTRY, APPLETON, WISCONSIN IPC TECHNICAL PAPER SERIES NUMBER 163 W. J. WHITSITT OCTOBER, 1985 163 THE INSTITUTE OF PAPER CHEMISTRY, APPLETON, WISCONSIN O E G? o IPC TECHNICAL PAPER SERIES NUMBER 163 O4 o= o COMPRESSIVE STRENGTH RELATIONSHIPS AND FACTORS, C) t C= c. Md Qy W. J. WHITSITT OCTOBER,

More information

p Coaches j i m Recruitment Dimensions Report Name Ali Example Date of Report: 29/06/2016 Elements report 3

p Coaches j i m Recruitment Dimensions Report Name Ali Example Date of Report: 29/06/2016 Elements report 3 Report Nme Ali Exmple Dte of Report: 29/06/2016 Elements report 3 Also Recommended: Trit Profile, Competency Report Who could use components of this report: p Coches j i HR professionls Trined prctitioners

More information

Return Temperature in DH as Key Parameter for Energy Management

Return Temperature in DH as Key Parameter for Energy Management Interntionl OPEN ACCESS Journl Of Modern Engineering Reserch (IJMER) Return Temperture in DH s Key Prmeter for Energy Mngement Normunds Tlcis 1, Egīls Dzelzītis 2, Agnese Līckrstiņ 2 *JSC Rīgs siltums

More information

Copyright 1982 by ASME. Combined Cycles

Copyright 1982 by ASME. Combined Cycles THE AMERICAN OCIETY OF MECHANICAL ENGINEER 345 E. 47 t., New York, N.Y. 117 82-GT-38 ^,+ w The ociety shll not be responsible for sttements or opinions dvnced in ppers or in C discussion t meetings of

More information

Simulation of Die Casting Process in an Industrial Helical Gearbox Flange Die

Simulation of Die Casting Process in an Industrial Helical Gearbox Flange Die Simultion of Die Csting Process in n Industril Helicl Gerbox Flnge Die Mehdi Modbberifr, Behrouz Rd, Bhmn Mirzkhni Abstrct Flnges re widely used for connecting vlves, pipes nd other industril devices such

More information

1 Information, Persuasion, and Signalling

1 Information, Persuasion, and Signalling ECON 312: Advertising 1 We will now exmine nother strtegic vrible vilble to firms, tht of dvertising. Industril Orgniztion Advertising 1 Informtion, Persusion, nd Signlling 1.1 Persusion versus Informtion

More information

CORRELATION BETWEEN MELT POOL TEMPERATURE AND CLAD FORMATION IN PULSED AND CONTINUOUS WAVE ND:YAG LASER CLADDING OF STELLITE 6

CORRELATION BETWEEN MELT POOL TEMPERATURE AND CLAD FORMATION IN PULSED AND CONTINUOUS WAVE ND:YAG LASER CLADDING OF STELLITE 6 Proceedings of the st Pcific Interntionl Conference on Appliction of sers nd Optics 4 CORREATION BETWEEN ET POO TEPERATURE AN CA FORATION IN PUSE AN CONTINUOUS WAVE N:YAG

More information

ESTIMATION AND UTILIZATION OF STRUCTURE ANISOTROPY IN FORMING PIECES

ESTIMATION AND UTILIZATION OF STRUCTURE ANISOTROPY IN FORMING PIECES www.cermics-silikty.cz Cermics-Silikáty 61 (), 141-146 (17) doi: 1.13168/cs.17.9 ESTIMATION AND UTILIZATION OF STRUCTURE ANISOTROPY IN FORMING PIECES MAROS MARTINKOVIC Slovk University of Technology in

More information

PERFORMANCE ANALYSIS OF HYBRID COOLING TOWER BASED ON THE EFFECTIVENESS-NTU APPROACH

PERFORMANCE ANALYSIS OF HYBRID COOLING TOWER BASED ON THE EFFECTIVENESS-NTU APPROACH Proceedings of the Asin Conference on Therml Sciences 2017, 1st ACTS Mrch 26-30, 2017, Jeju Islnd, Kore ACTS-P00478 PERFORMANCE ANALYSIS OF HYBRID COOLING TOWER BASED ON THE EFFECTIVENESS-NTU APPROACH

More information

Chickpeas Respond Well To Inoculation With TagTeam

Chickpeas Respond Well To Inoculation With TagTeam Chickpes Respond Well To Inocultion With TgTem S.M. Phelps, nd E. Hgele Philom Bios Inc., 318-111 Reserch Drive, Ssktoon, SK S7N 3R2 Abstrct Rhizobi strins were tested in TgTem pet nd grnule formultions

More information

Best Practices for PCR Assays in Seed Health Tests Version 3.0; June 2018

Best Practices for PCR Assays in Seed Health Tests Version 3.0; June 2018 Best Prctices for PCR Assys in Seed Helth Tests Version 3.0; June 2018 Polymerse Chin Rection (PCR) is currently the most commonly utilized moleculr technique in seed helth testing. This document provides

More information

Variables that influence outcomes of AI programs: Cow Biology

Variables that influence outcomes of AI programs: Cow Biology Vribles tht influence outcomes of AI progrms: Cow Biology Sndy Johnson, Ph.D. sndyj@ksu.edu K-Stte Reserch & Extension Northwest Reserch & Extension Center, Colby, KS Producers tht chieve excellent responses

More information

Quantifying the Total Cost of Ownership for Entry-Level and Mid-Range Server Clusters

Quantifying the Total Cost of Ownership for Entry-Level and Mid-Range Server Clusters Quntifying the Totl Cost of Ownership for Entry-Level nd Mid-Rnge Server Clusters A Detiled Anlysis of the Totl Cost of Ownership of OpenVMS, IBM AIX nd Sun Solris server clusters. June 2007 Version 1.0

More information

STATUS OF LAND-BASED WIND ENERGY DEVELOPMENT IN GERMANY

STATUS OF LAND-BASED WIND ENERGY DEVELOPMENT IN GERMANY Yer STATUS OF LAND-BASED WIND ENERGY Deutsche WindGurd GmbH - Oldenburger Strße 65-26316 Vrel - Germny +49 (4451)/9515 - info@windgurd.de - www.windgurd.com Annul Added Cpcity [MW] Cumultive Cpcity [MW]

More information

High strength fine grained structural steel, thermo-mechanically rolled, for high temperature application

High strength fine grained structural steel, thermo-mechanically rolled, for high temperature application P420M HT High strength fine grined structurl steel, thermo-mechniclly rolled, for high temperture ppliction Specifiction DH-E52-D, edition April 2016 1 P420M HT is high strength thermomechniclly rolled

More information

BRICK LINTELS. ~2 cm STRETCHER COURSE BRICKWORK MOUNTING OF LINTELS UP TO 2 M BRICK LINTELS STRETCHER COURSE BRICKWORK

BRICK LINTELS. ~2 cm STRETCHER COURSE BRICKWORK MOUNTING OF LINTELS UP TO 2 M BRICK LINTELS STRETCHER COURSE BRICKWORK BRICK LINTELS STRETCHER COURSE BRICKWORK BRICK LINTELS STRETCHER COURSE BRICKWORK Lintel consist of t lest three courses of bricks bonded with mortr. The first course of bricks, ech verticl joint, hs nchors

More information

2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT-2012)

2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT-2012) 2nd Interntionl Conference on Electronic & Mechnicl Engineering nd Informtion Technology (EMEIT-2012) Comprehensive Evlution of Air Conditioning Cold/Het Source System Bsed on Fuzzy Mthemtics Theory Gng

More information

Tree Shelters Fail to Enhance Height Growth of Northern Red Oak in the Upper Peninsula of Michigan. 1

Tree Shelters Fail to Enhance Height Growth of Northern Red Oak in the Upper Peninsula of Michigan. 1 Tree Shelters Fil to Enhnce Height Growth of Northern Red Ok in the Upper Peninsul of Michign. 1 Dougls O. Lntgne, Associte Professor, MSU Deprtment of Forestry nd Rymond Miller, Resident Forester, Upper

More information

The Effect of SFAS No. 131 on the Diversification Discount

The Effect of SFAS No. 131 on the Diversification Discount The Effect of SFAS No. 131 on the Diversifiction Discount Seoungpil Ahn Sogng Business School, Sogng University PA706, 35 Bekbeom-ro, Mpo-gu, Seoul 121-742, Kore E-mil: sphn@sogng.c.kr Received: July 2,

More information

Impacts of Fe-Based Amorphous HB1 Core Transformers on Energy Efficiency and Environment Protection

Impacts of Fe-Based Amorphous HB1 Core Transformers on Energy Efficiency and Environment Protection Impcts of Fe-Bsed Amorphous HB1 Core Trnsformers on Energy Efficiency nd Environment Protection Chng-Hung Hsu, b, Yeong-Hw Chng Electricl Engineering, Chng Gung University, To-Yun, Tiwn, R.O.C. b Electric

More information

A Genetic Algorithm based Approach for Cost worthy Route Selection in Complex Supply Chain Architecture

A Genetic Algorithm based Approach for Cost worthy Route Selection in Complex Supply Chain Architecture A Genetic Algorithm bsed Approch for Cost worthy Route Selection in Complex Supply Chin Architecture Arft Hbib ~, Nfi Rhmn*, Jhid Alm *, Asif Jorder *, Mrji Hque * ~ Deprtment of Computer Science nd Engineering,

More information

Introduction. and Hispanics as $1.3 trillion.

Introduction. and Hispanics as $1.3 trillion. Introduction Supplier diversity is the proctive business progrm supporting minority owned, women owned, vetern owned, LGBT owned, service disbled vetern owned, historiclly underutilized business nd SBA

More information

EE247 Lecture 4. EECS 247 Lecture 4: Filters 2004 H.K. Page 1. Summary Last Lecture

EE247 Lecture 4. EECS 247 Lecture 4: Filters 2004 H.K. Page 1. Summary Last Lecture EE247 Lecture 4 Summry lst lecture Lecture tody: High Q high order filters Trnsmission zero implementtion Exmple Effect of integrtor nonidelities on filter behvior Vrious integrtor topologies utilized

More information

EFFECT OF TEMPERATURE ON ADHESION OF CLAY SOIL TO STEEL

EFFECT OF TEMPERATURE ON ADHESION OF CLAY SOIL TO STEEL Cercetări Agronomice în Moldov Vol. XLV, No. 2 (150) / 2012 EFFECT OF TEMPERATURE ON ADHESION OF CLAY SOIL TO STEEL B. AZADEGAN 1, J. MASSAH 2 * *E-mil: jmssh@ut.c.ir Received April 14, 2012 ABSTRACT.

More information

Business Continuity Software Buyer s Guide

Business Continuity Software Buyer s Guide Business Continuity Softwre Buyer s Guide Opertionlly strtegic nd deployble, business continuity plns re criticl to ensuring your orgniztion cn survive nd succeed following n unplnned incident. Mny orgniztions

More information

p Coaches j i n C Dimensions Report Name Ali Example Date of Report: 29/06/2016 Team Profile 3

p Coaches j i n C Dimensions Report Name Ali Example Date of Report: 29/06/2016 Team Profile 3 Report Nme Ali Exmple Dte of Report: 29/06/2016 Tem Profile 3 Also Recommended: Behviourl Type t Work Profile, Composite Tem Report Who could use components of this report: p Coches j i HR professionls

More information

Efficiency Improvements of Air-Cooled Chillers Equipped With High Static Condenser Fans

Efficiency Improvements of Air-Cooled Chillers Equipped With High Static Condenser Fans Purdue University Purdue e-pubs Interntionl Refrigertion nd Air Conditioning Conference School of Mechnicl Engineering 2006 Efficiency Improvements of Air-Cooled Chillers Equipped With High Sttic Condenser

More information

Economic Profitability and Sustainability of Canola Production Systems in Western Canada

Economic Profitability and Sustainability of Canola Production Systems in Western Canada Economic Profitility nd Sustinility of Cnol Production Systems in Western Cnd Elwin Smith, R. Blckshw, Agriculture nd Agri-Food Cnd (AAFC), Lethridge, AB, N. Hrker, J. O'Donovn, AAFC Lcome AB, S. Brndt,

More information

Effect of Tantalum Additions to a Cobalt-Chromium-Nickel

Effect of Tantalum Additions to a Cobalt-Chromium-Nickel Effect of Tntlum Additions to Coblt-Chromium-Nickel Bse Alloy A. P. ROWE, W. C. BIGELOW, nd K. ASGAR University of Michign, School of Dentistry, Ann Arbor, Michign 48104, USA An investigtion by electron

More information

The basic model for inventory analysis

The basic model for inventory analysis The bsic model for inventory nlysis Lecture Notes for ME515 Prepred by Joyce Smith Cooper Professor of Mechnicl Engineering University of Wshington cooperjs@uw.edu See Chpter 2 of Heijungs nd Suh (22)

More information

Performance of 2,4-dinitrophenol as a positive electrode in magnesium reserve batteries q

Performance of 2,4-dinitrophenol as a positive electrode in magnesium reserve batteries q . Journl of Power Sources 89 2000 106 111 www.elsevier.comrlocterjpowsour Performnce of 2,4-dinitrophenol s positive electrode in mgnesium reserve btteries q S. Gopukumr ), S. Ntrjn, R. Thirunkrn, M. Skthivel

More information

Name Period Date. Grade 7 Unit 1 Assessment. 1. The number line below shows the high temperature in Newark, in degrees Fahrenheit, on Monday.

Name Period Date. Grade 7 Unit 1 Assessment. 1. The number line below shows the high temperature in Newark, in degrees Fahrenheit, on Monday. Nme Period Dte Grde 7 Unit 1 Assessment For multiple choice questions, circle the est nswer. For ll other questions, respond in the spce provided. 1. The numer line elow shows the high temperture in Newrk,

More information

The Dolphin Questionnaire

The Dolphin Questionnaire SH F CODE RECLL OPERE BUSY ZR B N D D CO MP L o OK Hi R E CLER OL EN ER ZERO RE ZERO CLER OL ENER ES C Hi OP ER E B US Y S R SHF CODE RECLL OP ER E B USY ZR BND DCOMP Lo OK Hi RE CLER OL ENER ZER O ZER

More information

Crystal Structure. Dragica Vasileska and Gerhard Klimeck

Crystal Structure. Dragica Vasileska and Gerhard Klimeck Crystl Structure Drgic Vsilesk nd Gerhrd Klimeck Crystl Structure Issues tht re ddressed in this lecture include:. Periodic rry of toms. Fundmentl types of lttices 3. Index system for crystl plnes 4. Simple

More information

FAILURE OF PINUS RADIATA VENEER IN TENSION ACROSS THE GRAIN

FAILURE OF PINUS RADIATA VENEER IN TENSION ACROSS THE GRAIN 120 NOTE FAILURE OF PINUS RADIATA VENEER IN TENSION ACROSS THE GRAIN A. MICHELLE CARRINGTON, ROGER B. KEEY, Deprtment of Chemicl nd Process Engineering, University of Cnterbury, Christchurch, New Zelnd

More information

Chandoga M., Jaroševič A., Sedlák J., Sedlák E. 3rd fib International Congress

Chandoga M., Jaroševič A., Sedlák J., Sedlák E. 3rd fib International Congress Chndog M., Jroševič A., Sedlák J., Sedlák E. 3rd fib Interntionl Congress - 2010 EXPERIMENTAL AND IN SITU STUDY OF BRIDGE BEAMS SUPPORTED BY BOTTOM EXTERNAL TENDONS Doc. Ing. Miln Chndog, PhD., Projstr

More information

EXPERIMENTAL ANALYSIS OF WASTE HEAT RECOVERY FROM CONDENSER OF REFRIGERATOR

EXPERIMENTAL ANALYSIS OF WASTE HEAT RECOVERY FROM CONDENSER OF REFRIGERATOR EXPERIMENTAL ANALYSIS OF WASTE HEAT RECOVERY FROM CONDENSER OF REFRIGERATOR Jgtp Vivek D.*, Ghuge N. C. * PG Scholr, Deprtment of Mechnicl Engineering, MCOE. Nshik, Svitribi Phule University Pune. **Assistnt

More information

Presenting the mathematical model to determine retention in the watersheds

Presenting the mathematical model to determine retention in the watersheds Europen Wter 57: 207-213, 2017. 2017 E.W. Publictions Presenting the mthemticl model to determine retention in the wtereds S. Shmohmmdi Deprtment of Wter Enginerring, Fculty of Agriculture, Shhrekord University,

More information

ENVIRONMENTAL AUDIT OF THE SITES IMPACTED BY THE PROBO KOALA TOXIC WASTE DUMPING IN ABIDJAN, CÔTE D IVOIRE

ENVIRONMENTAL AUDIT OF THE SITES IMPACTED BY THE PROBO KOALA TOXIC WASTE DUMPING IN ABIDJAN, CÔTE D IVOIRE ENVIRONMENTAL AUDIT OF THE SITES IMPACTED BY THE PROBO KOALA TOXIC WASTE DUMPING IN ABIDJAN, CÔTE D IVOIRE This series of fct sheets ws prepred s prt of UN Environment s environmentl udit of the sites

More information

EMPLOYER HUB APPRENTICESHIPS THE. 2019/20 Apprenticeships. Information for applicants. The college of choice

EMPLOYER HUB APPRENTICESHIPS THE. 2019/20 Apprenticeships. Information for applicants. The college of choice EMPLOYER HUB APPRENTICESHIPS THE 2019/20 Apprenticeships Informtion for pplicnts The college of choice Contents Why Nescot? 04 Wht is n pprenticeship? 04 Wht re the benefits of doing n pprenticeship?

More information

Service Architecture. T.C. Lea-Cox, A Lesson for the CMDB from Containerised Cargo Services. Introduction. Overview of Container Movement

Service Architecture. T.C. Lea-Cox, A Lesson for the CMDB from Containerised Cargo Services. Introduction. Overview of Container Movement A Lesson for the CMDB from Continerised Crgo Services Trevor LeCox Introduction The Problem Are: Continerised Crgo Importtion Service Time to deliver crgo to the Consignee ws tking longer thn tht benchmrked

More information

CHAPTER 2 RELATIONAL MODEL

CHAPTER 2 RELATIONAL MODEL CHAPTER RELATIONAL MODEL Chpter : Reltionl Model Structure of Reltionl Dtbses Fundmentl Reltionl Algebr Opertions Additionl Reltionl Algebr Opertions Extended Reltionl-Algebr-Opertions Null Vlues Modifiction

More information

Deoxidation Equilibrium of Manganese and Silicon in Liquid Iron Nickel Alloys

Deoxidation Equilibrium of Manganese and Silicon in Liquid Iron Nickel Alloys ISIJ Interntionl, Vol. 43 (003), No. 10, pp. 1487 1494 Deoxidtion Equilibrium of Mngnese nd Silicon in Liquid Iron Nickel Alloys V. Y. DASHEVSKII, A. M. KATSNELSON, N. N. MAKAROVA, K. V. GRIGOROVITCH nd

More information

phenylalanine alanine

phenylalanine alanine END F UNIT TET ENGINEERING PRTEIN TET 60 mrks (1 hour) A copy of the EP Informtion heet is required for this test, together with the spectroscopic dt (n.m.r.) from Tble 23 in the Dt heets. 1 nylketonuri

More information

AUTOMATIC BATTERY CHARGERS 22

AUTOMATIC BATTERY CHARGERS 22 ATOMATC RS Switching nd liner technology 1 chrging level Versions for nonseled nd seled ledcid tteries, 1.25 to 12A rtings Chrging current limittion selectle. for ledcid tteries SEC. PAGE Switching BCF

More information

Primer in Population Genetics

Primer in Population Genetics Primer in Popultion Genetics Hierrchicl Orgniztion of Genetics Diversity Primer in Popultion Genetics Defining Genetic Diversity within Popultions Polymorphism number of loci with > 1 llele Number of lleles

More information

Simplified Calculation of Short-Term Deflection in Prestressed Two-Way Flat Slabs

Simplified Calculation of Short-Term Deflection in Prestressed Two-Way Flat Slabs ACI STRUCTURAL JOURNAL Title no. 103-S86 TECHNICAL PAPER Simplified Clcultion of Short-Term Deflection in Prestressed Two-Wy Flt Slbs by Shih-Ho Cho nd Antoine E. Nmn While the deflection control of reinforced

More information

Pig breeding, selection and hybridisation in Italy

Pig breeding, selection and hybridisation in Italy Pig breeding, selection nd hybridtion in Itly Russo V. in Aumître A. (ed.). The production pig met in Mediterrnen Countries Pr : CIHEAM Options Méditerrnéennes : Série Etudes; n. 1989-I 1989 pges 91-97

More information

PESTICIDES. Pesticides are chemicals designed to kill pests. A pest is an organism that people consider to be. disturbing or unwanted.

PESTICIDES. Pesticides are chemicals designed to kill pests. A pest is an organism that people consider to be. disturbing or unwanted. disturbing or unwnted A pest is n orgnism tht people consider to be dys The time they sty in the environment is mostly few These re used to kill bcteri 4 Bctericides: dys These re used to kill moulds nd

More information

(b) Is already deposited in a waste disposal site without methane recovery.

(b) Is already deposited in a waste disposal site without methane recovery. TYPE III - OTHER PROJECT ACTIVITIES Project prticipnts must tke into ccount the generl guidnce to the methodologies, informtion on dditionlity, bbrevitions nd generl guidnce on lekge provided t http://cdm.unfccc.int/methodologies/sscmethodologies/pproved.html.

More information

Page Page 22-3 and 4

Page Page 22-3 and 4 Pge -2 SWITCHING CHARGERS MODLAR VERSION For led-cid tteries up to 50Ah rting Rted output current: 2.5 nd 4.5A t 12VDC 1.25 nd 2.5A t 24VDC Electronic lock for shorted ttery, reverse polrity nd output

More information

Web Crippling of Wide Deck Sections

Web Crippling of Wide Deck Sections Missouri University of Science nd Technology Scholrs' Mine Interntionl Specilty Conference on Cold- Formed Steel Structures (1990) - 10th Interntionl Specilty Conference on Cold-Formed Steel Structures

More information

Numerical Analysis of a Reinforced Concrete Slab-Column Connection Subjected to Lateral & Vertical Loading

Numerical Analysis of a Reinforced Concrete Slab-Column Connection Subjected to Lateral & Vertical Loading , Mrch 15-17, 2017, Hong Kong Numericl Anlysis of Reinforced Concrete Slb-Column Connection Subjected to Lterl & Verticl Loding Mostfiz Emtiz, A.S.M. Aluddin Al Azd, H. M. Shhin b nd Sultn Al Shfin c Abstrct

More information

Low-Relaxation Strand Practical Applications in Precast Prestressed Concrete

Low-Relaxation Strand Practical Applications in Precast Prestressed Concrete Low-Relxtion Strnd Prcticl Applictions in Precst Prestressed Concrete Leslie D. Mrtin Consulting Engineer The Consulting Engineers Group, Inc. Glenview, Illinois Donld L. Pellow Supervisor Technicl Services

More information

Crop Performance and Plant Microbe-Interactions are Affected by the Sequence and Frequency of Pulse Crops in the Canadian Prairie

Crop Performance and Plant Microbe-Interactions are Affected by the Sequence and Frequency of Pulse Crops in the Canadian Prairie Crop Performnce nd Plnt Microbe-Interctions re Affected by the Sequence nd Frequency of Pulse Crops in the Cndin Pririe Nvrro-Borrell A 1,2 ; Di M 2 ; Hmel C 1,2 ; Fernndez MR 2 ; Gn Y 2 ; Germid J 1.

More information

Academic. Grade 9 Assessment of Mathematics. Spring 2009 SAMPLE ASSESSMENT QUESTIONS

Academic. Grade 9 Assessment of Mathematics. Spring 2009 SAMPLE ASSESSMENT QUESTIONS Acdemic Grde 9 Assessment of Mthemtics Spring 009 SAMPLE ASSESSMENT QUESTIONS Record our nswers to the multiple-choice questions on the blnk Student Answer Sheet (Spring 009, Acdemic). Plese note: The

More information

SUBSURFACE CRACK INITIATION DURING FATIGUE AS A RESULT OF RESIDUAL STRESSES. (Received 1 I May 1979)

SUBSURFACE CRACK INITIATION DURING FATIGUE AS A RESULT OF RESIDUAL STRESSES. (Received 1 I May 1979) Ftigue of Engineering Mterils nd Sfrucrures Vol. 1, pp. 31%327 Pergmon Press. Printed in Gret Britin. Ftigue of Engineering Mterils Ltd. 1979. SUBSURFACE CRACK INITIATION DURING FATIGUE AS A RESULT OF

More information

home water audit kit take a look Clackamas River Water Providers (CRWP) Saving Water Makes Cents! CRWP Public Education and Outreach Cooordinator

home water audit kit take a look Clackamas River Water Providers (CRWP) Saving Water Makes Cents! CRWP Public Education and Outreach Cooordinator tke look Clckms River Wter Providers (CRWP) Encourges you to tke look t your home wter system to identify wys you cn conserve wter nd be more efficient with our precious wter resource. FOR MORE INFORMATION:

More information

Theoretical Foundation for Mechanical Products Service Life Prediction

Theoretical Foundation for Mechanical Products Service Life Prediction Theoreticl Foundtion for Mechnicl Products Service Life Prediction V V Konovodov 1, A V Vlentov, T V Lfetov 1, M N Bslev 1 Novosibirsk Stte Agrrin University 147 Nikitin St, 630039 Novosibirsk, Russi;

More information

STATUS OF LAND-BASED WIND ENERGY DEVELOPMENT IN GERMANY

STATUS OF LAND-BASED WIND ENERGY DEVELOPMENT IN GERMANY First Hlf STATUS OF LAND-BASED WIND ENERGY On behlf of: Deutsche WindGurd GmbH - Oldenburger Strße 65-26316 Vrel - Germny +49 (4451)/95150 - info@windgurd.de - www.windgurd.com Cumultive Development First

More information

The point at which quantity demanded and quantity supplied come together is known as equilibrium. Price of a slice of pizza $2.00. Demand $2.50 $3.

The point at which quantity demanded and quantity supplied come together is known as equilibrium. Price of a slice of pizza $2.00. Demand $2.50 $3. Blncing the Mrket The point t which quntity demnded nd quntity supplied come together is known s equilibrium. Finding Equilibrium per slice $3.5 $3. $2.5 $2. $1.5 $1. $.5 Equilibrium Point Equilibrium

More information

Experimental Research on Heat/Mass Transfer Features of Corrugated Plate Spray Humidification Air Coolers

Experimental Research on Heat/Mass Transfer Features of Corrugated Plate Spray Humidification Air Coolers 379 A publiction of CHEMICAL ENGINEERING TRANSACTIONS VOL. 6, 017 Guest Editors: Fei Song, Hibo Wng, Fng He Copyright 017, AIDIC Servizi S.r.l. ISBN 978-88-95608-60-0; ISSN 83-916 The Itlin Assocition

More information

many different types exist for environmental engineering generally designed to emphasize suspended growth or biofilms

many different types exist for environmental engineering generally designed to emphasize suspended growth or biofilms Chpter 5. Rectors Rectors mny different types exist for environmentl engineering generlly designed to emphsize suspended growth or biofilms tht mke use of suspended growth re lso clled: suspended-floc,

More information

Coordinate geometry. In this chapter. Areas of study. Units 3 & 4 Functions, relations and graphs Algebra

Coordinate geometry. In this chapter. Areas of study. Units 3 & 4 Functions, relations and graphs Algebra Coordinte geometr VCEcoverge Ares of stud Units & Functions, reltions nd grphs Alger In this chpter A Sketch grphs of = m + n + c where m = or nd n = or B Reciprocl grphs C Grphs of circles nd ellipses

More information

q p P : Si : : : : Si : : : Si : Si : Si : : Extra free e - Dope Here, energy to get 1/26/10 Lecture Topics: Silicon

q p P : Si : : : : Si : : : Si : Si : Si : : Extra free e - Dope Here, energy to get 1/26/10 Lecture Topics: Silicon EE 143 Microfbriction Technology Lecture 3 Mterils II 1/26/10 Reding portions throughout Jeger Lecture Topics licon licon Dioxide licon Nitride Aluminum & Other Metls In this course, the focus will be

More information

Automatic battery chargers

Automatic battery chargers Automtic ttery chrgers Automtic ttery chrgers Switching For not seled led-cid tteries BCF... Order code Rted Rted Qty Wt output output per current voltge pkg DC [A] [V] n [kg] 1 chrging level. BCF 0250

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION doi:10.1038/nture10970 I. GN directly grown on the h-bn relese lyer Figure S1 shows X-ry diffrction with the 2θ/ω configurtion nd n opticl microscopy imge for the GN directly grown on the h-bn relese lyer.

More information

WEED POPULATIONS AND CROP ROTATIONS: EXPLORING DYNAMICS OF A STRUCTURED PERIODIC SYSTEM

WEED POPULATIONS AND CROP ROTATIONS: EXPLORING DYNAMICS OF A STRUCTURED PERIODIC SYSTEM Ecologicl pplictions, 12(4), 2002, pp. 25 41 2002 y the Ecologicl Society of meric WEED POPULTIONS ND CROP ROTTIONS: EXPLORING DYNMICS OF STRUCTURED PERIODIC SYSTEM SHN K. MERTENS, 1,2,5 FRNK VN DEN OSCH,

More information

High-voltage electric pulse welding of magnetic cores made of rings of magnetic soft alloy 49K2FA

High-voltage electric pulse welding of magnetic cores made of rings of magnetic soft alloy 49K2FA IOP Conference Series: Mterils Science nd Engineering PAPER OPEN ACCESS High-voltge electric pulse welding of mgnetic cores mde of rings of mgnetic soft lloy 49K2FA To cite this rticle: A V Yudin et l

More information

Development of Anisotropic Hyperelastic Model Considering Stress Softening

Development of Anisotropic Hyperelastic Model Considering Stress Softening Development of Anisotropic Hyperelstic Model Considering Stress Softening Akihiro Mtsud University of Tsukub ECCMR205, Prgue Contents Introduction Objective Anisotropic Hyperelstic model Mteril Tests FEM

More information

Conservation Tillage Strategies For Corn, Sorghum And Cotton

Conservation Tillage Strategies For Corn, Sorghum And Cotton (93%) cotton nd percent lint ws similr in oth pickers. The 15-inch row system with 27 plnts/a gve higher lint yield (1491 l/a) compred to 4-inch row cotton with 5 plnts/a (136 l/a). Plnt cnopy closed 3

More information

Irrigation systems and techniques for saline water

Irrigation systems and techniques for saline water Irrigtion systems nd techniques for sline wter Cvzz L. in Bouchet R. (ed.). Reuse low qulity wter for irrigtion Bri : CIHEAM Options Méditerrnéennes : Série A. Séminires Méditerrnéens; n. 1 1989 pges 49-57

More information

We engineer your success. All over the world. Semi Automatic

We engineer your success. All over the world. Semi Automatic We engineer your success. All over the world. Semi Automtic Viscon Hydroponics Mnul System The demnd for food sfe products re worldwide incresing. In Chin Food Sfety is in the governments top priority

More information

The energy content of the diet generally

The energy content of the diet generally Peer reviewed Originl reserch Economics of incresing lysine:clorie rtio nd dding dietry ft for growing-finishing pigs rered in commercil environment Mnuel De L Llt, MS, PhD; Steve S. Dritz, DVM, PhD; Michel

More information

Silver-Tin Oxide. (Ag/SnO²)

Silver-Tin Oxide. (Ag/SnO²) Silver-Tin Oxide (Ag/SnO²) Silver Tin oxide (Ag/SnO² ) mterils. speterts or other rights of third prties re concemend. The informtion descries the type of mteril nd shll not e considered s ssured chrcteristics.

More information

STUDIES ON PHYSICAL PROPERTIES OF HOMOGENEOUS SAND MIXES ABSTRACT

STUDIES ON PHYSICAL PROPERTIES OF HOMOGENEOUS SAND MIXES ABSTRACT , t ityp t% \ OTITUTE 01 - en I LLIBRARV)(::-% 43, AL STUDIES ON PHYSICAL PROPERTIES OF HOMOGENEOUS SAND MIXES BY V. V. SUBBA RAO AND T. RAMMOHAN (Deprtment of Mech. Engg., Univ. College of Engg., Osmni

More information

Optimal Analysis of Grounding System Design for Distribution Substation

Optimal Analysis of Grounding System Design for Distribution Substation World Acdemy of cience, ngineering nd Technology Interntionl Journl of nergy nd Power ngineering Optiml Anlysis of rounding ystem Design for Distribution ubsttion T. Lnthrthong, N. Rugthichroencheep, A.

More information

Shot Peening and Ball-Burnishing to Improve HCF Strength of the New Titanium Alloy TIMETAL-54M

Shot Peening and Ball-Burnishing to Improve HCF Strength of the New Titanium Alloy TIMETAL-54M Shot Peening nd Bll-Burnishing to Improve HCF Strength of the New Titnium Alloy TIMETAL-54M K. Zy 1, Y. Shn 1, Y. Kosk 2, L. Wgner 1 1 Institute of Mterils Science nd Engineering Clusthl University of

More information

Train Load. Examples of Aquifer Elasticity. Outline. Oscar E. Meinzer 1928, Compressibility and elasticity of artesian aquifers 6/30/2006

Train Load. Examples of Aquifer Elasticity. Outline. Oscar E. Meinzer 1928, Compressibility and elasticity of artesian aquifers 6/30/2006 Poroelsticity of Frctured Rock Outline Herb Wng Geology nd Geophysics UW-Mdison Exmples of poroelstic behvior Constitutive Equtions of Single Porosity Medium Constitutive Equtions of Dul Porosity Medium

More information

Cellular automata urban growth model calibration with genetic algorithms

Cellular automata urban growth model calibration with genetic algorithms 2007 Urbn Remote Sensing Joint Event Cellulr utomt urbn growth model clibrtion with genetic lgorithms SHARAF AL-KHEDER, JUN WANG, JIE SHAN Geomtics Engineering School of Civil Engineering Purdue University,

More information

Direct Power Comparisons between Simple LOD Scores and NPL Scores for Linkage Analysis in Complex Diseases

Direct Power Comparisons between Simple LOD Scores and NPL Scores for Linkage Analysis in Complex Diseases Am. J. Hum. Genet. 65:847 857, 1999 Direct Power Comprisons between Simple LOD Scores nd NPL Scores for Linkge Anlysis in Complex Diseses Pul C. Abreu, 1 Dvid A. Greenberg, 3 nd Susn E. Hodge 1,2,4 1 Division

More information

RPV and Primary Circuit Inspection

RPV and Primary Circuit Inspection PV nd Primry Circuit Inspection In-Situ gnetic esurement under Neutron dition in Nucler ectors S. Tkhshi, S. Kobyshi, Y Kmd,. Kikuchi, K. Ar, Iwte University, Jpn ABSTACT In situ mgnetic mesurement on

More information

H. Randall Smith; Ph.D. Agronomy and Wayne Porter: Ph.D. Horticulture Mississippi State University Extension Service

H. Randall Smith; Ph.D. Agronomy and Wayne Porter: Ph.D. Horticulture Mississippi State University Extension Service Effect of SumGrow on growth, development nd yield of Irish pottoes (Solnum tuerosum) t the Beumont Reserch Sttion (Mississippi Stte University) during 217 H. Rndll Smith; Ph.D. Agronomy nd yne Porter:

More information

Optimizing the Utility Power of a Geothermal Power Plant using Variable Frequency Drive (VFD) (Case Study: Sibayak Geothermal Power Plant)

Optimizing the Utility Power of a Geothermal Power Plant using Variable Frequency Drive (VFD) (Case Study: Sibayak Geothermal Power Plant) IOP Conference Series: Erth nd Environmentl Science PAPER OPEN ACCESS Optimizing the Utility Power of Geotherml Power Plnt using Vrible Frequency Drive (VFD) (Cse Study: Sibyk Geotherml Power Plnt) To

More information

SIMULATING SAMPLING EFFICIENCY IN AIRBORNE LASER SCANNING BASED FOREST INVENTORY

SIMULATING SAMPLING EFFICIENCY IN AIRBORNE LASER SCANNING BASED FOREST INVENTORY SIMULATING SAMPLING EFFICIENCY IN AIRBORNE LASER SCANNING BASED FOREST INVENTORY L. Ene, E. Næsset b, T. Gobkken b Norwegin University of Life Sciences, Grdute student - liviue@student.umb.no b Norwegin

More information

V94.2 Gas Turbine Thermodynamic Modeling for Estimation of Power Gained by Fog System in Iran Power Plants

V94.2 Gas Turbine Thermodynamic Modeling for Estimation of Power Gained by Fog System in Iran Power Plants V94 Gs Turbine Thermodynmic Modeling for Estimtion of Power Gined by Fog System in Irn Power Plnts Mohmmd Ameri #, Behnm Thvildr * #Combined Het & Power Specilized Unit (CHP), Mechnicl & Energy Engineering

More information

The Effects of Soil Moisture and Nutrients on Cropland Productivity in the Highland Area of the Loess Plateau

The Effects of Soil Moisture and Nutrients on Cropland Productivity in the Highland Area of the Loess Plateau 14 The Effects of Soil Moisture nd Nutrients on Croplnd Productivity in the Highlnd Are of the Loess Plteu inli Ling, * Shozhong Kng nd Chenge Zhng * Abstrct Soil moisture nd nutrient distribution, nd

More information

Establishing a PourThru Sampling Program for Geraniums

Establishing a PourThru Sampling Program for Geraniums N.C. Flower Growers' Bulletin - Februry, 2000 Volume 45, Number Estblishing PourThru Smpling Progrm for Gerniums Bn E. Whipker, Willim C. Fonteno, Todd J. Cvins, Jmes L. Gibson Deprtment of Horticulturl

More information

Biofilm Formation by Escherichia coli csga and fima mutants

Biofilm Formation by Escherichia coli csga and fima mutants Journl of Undergrdute Reserch t Minnesot Stte University, Mnkto Volume 14 Article 9 2014 Biofilm Formtion by Escherichi coli csga nd fima mutnts Nicole Snyder Minnesot Stte University, Mnkto Sen Willert

More information

A comparison of the energy use for different heat transfer fluids in geothermal systems

A comparison of the energy use for different heat transfer fluids in geothermal systems IGSHPA Technicl/Reserch Conference nd Expo Denver Mrch 14-16, 2017 A comprison of the energy use for different het trnsfer fluids in geotherml systems Lurent Ggné-Boisvert Michel Bernier ABSTRACT Geotherml

More information