Green Computing

Green computing is all about using computers in a smarter and eco-friendly way. It is the environmentally responsible use of computers and related resources which includes the implementation of energy-efficient central processing units, servers and peripherals as well as reduced resource consumption and proper disposal of electronic waste .Computers certainly make up a large part of many people lives and traditionally are extremely damaging to the environment. Manufacturers of computer and its parts have been espousing the green cause to help protect environment from computers and electronic waste in any way.Research continues into key areas such as making the use of computers as energy-efficient as Possible, and designing algorithms and systems for efficiency-related computer technologies

Green Computing

Green computing is all about using computers in a smarter and eco-friendly way. It is the environmentally responsible use of computers and related resources which includes the implementation of energy-efficient central processing units, servers and peripherals as well as reduced resource consumption and proper disposal of electronic waste .Computers certainly make up a large part of many people lives and traditionally are extremely damaging to the environment. Manufacturers of computer and its parts have been espousing the green cause to help protect environment from computers and electronic waste in any way.Research continues into key areas such as making the use of computers as energy-efficient as Possible, and designing algorithms and systems for efficiency-related computer technologies

Modified digital space vector pulse width modulation realization on low-cost FPGA platform with optimization for 3-phase voltage source inverter

The realization of power electronic applications on hardware is a challenging task. The digital control circuit strategies are used to overcome the analog control strategies by providing great flexibility with simple equipment and higher switching frequencies. In this manuscript, an area optimized, modified digital space vector (DSV) pulse width modulation is designed and realized on low-cost FPGA. The modified digital space vector pulse width modulation (DSVPWM) uses a phase-locked loop (PLL) to generate clocks using the digital clock manager (DCM). These DCM clocks are used in the DSVPWM module to synchronize the other sub-modules. The voltage generation unit generates the three-phase (3-Ф) voltages and is used in the alpha-beta generation and sector determination unit. The reference active vectors are made by the reference generation unit and used in switching time calculation. The PWM pulses are generated using switching time generation, and lastly, the dead time occurrence unit generates the final SVPWM gate pulses. The modified DSVPWM is synthesized and implemented on Spartan-3E FPGA. The modified DSVPWM utilizes 17% slices, works at 102.45 MHz, and consumes 0.070 W total power. The simulation results and the resource utilization of modified DSVPWM are represented in detail. The modified DSVPWM is compared with existing PWM approaches on different Spartan-series FPGAs with better chip area improvemen

EVALUATION OF LIVER FUNCTION MARKERS AMONG WORKERS IN JEWELLERY UNITS

Objectives: Jewellery making unit workers are exposed to potent toxic chemicals and heavy metals during the manufacturing process. Various alloys are used during the manufacturing process of gold in which silver is used in higher concentration. The induction of metallothioneins (MTs) might occur due to the occupational exposure to heavy metals. Hence, the relationship of silver or MTs with liver function markers were investigated. Methods: A cross sectional study was conducted in the jewellery making units located in Coimbatore, Tamilnadu. A total of 211 participants [exposed (n = 158) and control (n = 53)] were included for the study and their liver function markers namely alanine amino transferase (ALT), aspartate amino transferase (AST), alkaline phosphatase (ALP), total protein, albumin, total/direct bilirubin and total cholesterol were estimated. Levels of serum silver and MTs were also assessed. Results: There were significant (p<0.05) increases of serum silver, MTs, ALT, AST, total cholesterol, total/direct bilirubin and significant (p<0.05) decrease of ALP, total protein and albumin in exposed groups compared to control group. Levels of MTs were positively correlated with ALT, AST, total cholesterol, total/direct bilirubin and were negatively correlated with albumin, total protein and ALP. Conclusion: The significant changes of liver function enzymes were observed due to the prolonged period of exposure to silver. However releases of these markers were in the normal range which might be due to the induction of MTs. The elevated levels of MT in the serum compared to control group pointed out that it might provide a cellular defense strategy against silver

(R1506) Generalized cr3b Problem with Heterogeneous Primary and Secondary as Finite Straight Segment

The existence and stability of stationary points are investigated under the effects of heterogeneous primary having N-layers with different densities, radiating finite straight segment and the Coriolis as well as centrifugal forces in the frame of cr3bp. The equations of motion are determined with the help of which we evaluate five stationary points analytically as well as graphically, and examine their stability