are a pair of organs in the female reproductive system. they are in the pelvis, one on each side of the uterus (the hollow, pear-shaped organ where a baby grows). each ovary is about the size and shape of an almond. the ovaries make eggs and female hormones (chemicals that control the way certain cells...
. in science and technology, a battery is a device that stores chemical energy and makes it available in an electrical form. batteries consist of electrochemical devices such as one or more galvanic cells, fuel cells or flow cells. strictly, an electrical "battery" is an interconnected array of similar...
price: $ availability: available ion power item #: mea-n -us - n catalyst coated membrane for hydrogen fuel cellsfeatures electrode size: cm x cmoverall dimensions: cm x cmanode/cathode loading: mg pt/cm /side quick view n cm catalyst coated membrane for hydrogen fuel cells price: $ availability: available...
(chips). through improvements in production processes, the cod (chemical oxygen demand) content in process effluents is monitored and continuously decreased. energy created in the combustion of hydrocarbons reduces the use of fossil fuels by generating process energy. bobingen photovoltaic plant at...
vexing problem to be solved, people sometimes offer metaphorical advice such as "stretching the mind" or engaging in "flexible" thinking, but in confronting a problem facing many biomedical research labs, a team of mit researchers has engineered a solution that is much more literal. to make imaging cells...