background: 99mtc is a widely used radioisotope in nuclear medicine centers which is obtained by elution from mo-99/tc-99m generators. usually the generators are either supplied by the iran atomic energy agency or by private companies from foreign countries. in this study we have measured 99mo contamination in 99mtc elute from different generators in a period of one year. materials and methods:...

With the growing environmental depletion, shift in focus towards minimizing emissions of gases released conventional generators and further incorporation a cleaner alternate renewable source energy such as wind or solar to existing system is utmost importance. The research paper aims build an environmentally resilient electric power system. Real coded genetic algorithm- powerful optimization te...

Ejectors are a kind of pump that does not have any moving components. In certain cases, the motor fluid may be liquid, steam, or another gas. The research focuses on using nano adsorption combined with multi ejector to fuel sophisticated power plant, which is equipped three shapes steam boiler generators. simulation was accomplished by implementing it cooperation two programs MATLAB A and B, to...

Thermoelectric generators (TEGs) are now capable of powering the abundant low power electronics from very small (just a few degrees Celsius) temperature gradients. This factor along with the continuously lowering cost and size of TEGs, has contributed to the growing number of miniaturized battery-free sensor modules powered by TEGs. In this article, we present the design of an ambient-powered w...

utilizing the gathered failure data and failure interval data from tabas coal mine in two years, this paper discusses the reliability of powered supports. the data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. the results show that the powered supports follow the gamma reliability function. the reliability of the machine de...

Wearable technology has broad market prospects in the military, fire protection, medical and health, sports other fields under its ability to effectively solve practical application needs. Self-powered energy systems with miniaturized, light-weight, highly flexible, stretchable, bendable, wearable properties have received extensive attention industry as they can meet needs of new-generation ele...

Hydrogen energy leads us in an important direction the development of clean energy, and comprehensive utilization hydrogen is crucial for low-carbon transformation power sector. In this paper, demand various fields predicted based on support vector regression algorithm, which can be converted into equivalent electrical load when it all produced from water electrolysis. Then, investment costs ge...

Abstract Paper, as a foldable, pollution-free, and low-cost material, has become suitable support substrate for producing flexible thermoelectric (TE) generators to realize waste heat recycling the application of human-powered electronic devices. We propose facile fabrication method modify cellulose paper with inorganic TE powders via vacuum filtration, making modified that possesses good prope...