Search results
Results from the WOW.Com Content Network
HeLa cells are rapidly dividing cancer cells, and the number of chromosomes varies during cancer formation and cell culture. The current estimate (excluding very tiny fragments) is a "hypertriploid chromosome number (3n+)", which means 76 to 80 total chromosomes (rather than the normal diploid number of 46) with 22–25 clonally abnormal ...
Thermogalvanic cell displaying the elements making up the cell. In electrochemistry, a thermogalvanic cell is a kind of galvanic cell in which heat is employed to provide electrical power directly. [1] [2] These cells are electrochemical cells in which the two electrodes are deliberately maintained at
Energy-filtered transmission electron microscopy (EFTEM) is a technique used in transmission electron microscopy, in which only electrons of particular kinetic energies are used to form the image or diffraction pattern. The technique can be used to aid chemical analysis of the sample in conjunction with complementary techniques such as electron ...
Most photovoltaic cells (e.g. silicon based) suffer from a drop in efficiency with increased cell temperatures. Each Kelvin of increased cell temperature reduces the efficiency by 0.2–0.5%. [5] Therefore, heat removal from the PV cells can lower their temperature and thus increase the cells' efficiency.
On May 27, 2016, Thermo Fisher Scientific Inc. announced [9] its acquisition of FEI Company for US$4.2 billion, which commenced in early 2017. [10] At the time of the transaction, FEI had more than 2700 employees in over 20 countries. [11] The FEI trademark was phased out in favor of the Materials & Structural Analysis division of Thermo Fisher ...
[1] After graduating from Northeastern University in 1959 John Hatsopoulos [2] (brother of George) later joined the company as Financial Controller. Arvin Smith joined the company in 1970, and was President from January 1998. [3] On May 14, 2006, Thermo and Fisher Scientific announced that they would merge in a tax-free, stock-for-stock exchange.
An example of a galvanic cell consists of two different metals, each immersed in separate beakers containing their respective metal ions in solution that are connected by a salt bridge or separated by a porous membrane. [1] Volta was the inventor of the voltaic pile, the first electrical battery.
The Seebeck coefficient (also known as thermopower, [1] thermoelectric power, and thermoelectric sensitivity) of a material is a measure of the magnitude of an induced thermoelectric voltage in response to a temperature difference across that material, as induced by the Seebeck effect. [2]