Introduction: Drinking water should be free of any chemical contaminants.One of the important aspects of drinking water pollution is presence of heavy metals that can be hazardous for consumer’s health.This study was carried out to determine the concentration of heavy metals in urban and rural drinking water networks of Hamadan province in 20
In terms of improving the processing accuracy and efficiency of globoidal indexing cams,the study on non- equivalent machining is carried out.The non- equivalent processing Water Filter actual contour surface equation is established by rotating coordinate transformation to deduce and calculate the compensation amount and the compensation direction
The closed nutrient solution management method allows for the recycling and utilization of nutrient solutions, improving the efficiency of water and fertilizer utilization.This study was conducted to investigate the effects of changing the frequency of nutrient solution renewal and method of nutrient supply on the microbial communities composition,
Acetaminophen, the major active metabolite of acetanilide in man, has become one of the most popular over-the-counter analgesic and antipyretic agents, consumed by millions of people daily.However, its mechanism of action is still a matter of debate.We have previously shown that acetaminophen is further metabolized to N-(4-hydroxyphenyl)-5Z,8Z,11Z,