Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Laptops

The desire to improve sharjDness and viewing angle range led to the development of supertwisted nematic displays name suggests, STN displays have higher twist angles than the TN display, typically 220-270°. They are widely us laptop computers. [Pg.2563]

Certainly not. Input File 10-1 was written using the DOS editor and saved on a 3.5" floppy disk. You can write your input files at home on a laptop if you like, and then run them when your GAUSSIAN is not otherwise in use. Use. g jf (gaussian job file) as your file extension. If your editor gives the. txt extension or some such, use the rename command in DOS. If you run your file directly from the a drive, the output will be stored... [Pg.300]

A piping system can be evaluated for its displacement and stress either by manual methods (charts, tables, hand calculation) or computerized solution. The latter has become the standard approach desktop and laptop computers can handle all but the most compHcated problems. Manual methods are used only for rough estimates on very simple systems. [Pg.61]

Efforts to commercialize larger versions of rechargeable lithium cells have been fmstrated by concerns over product safety. MoH Energy Ltd. briefly introduced "AA" Li—M0S2 cells for OEM use in laptop computers and cellular phones. However, safety issues resulted in a product recall and a halt to commercialization of this product. [Pg.587]

Sometimes it is desirable to turn off a seetion of the produet but leave other portions operating. This is typieally the ease in laptop eomputers for power savings or eonsumer applianee applieations, sueh as CRT monitors, televisions, and stereo equipment. [Pg.93]

Newer batteries can be divided into small rechargeable batteries for consumer electronics, cell-phones and laptop computers primarily, and larger advanced storage systems. The field of research on battery concepts and materials has recently... [Pg.448]

The Sony cell is rapidly outstripping all other batteries for such uses as laptop computers, especially since the electrode design has overcome danger of fire which held back earlier versions of the battery. It has an energy density of >200 watt-... [Pg.451]

After preparation, a checklist may be used by less expert engineers than the preparers for inspecting the process areas to compare the process equipment and operations with the checklist oidrcr on hardcopy or laptop computer. The analyst fills in the checklist according to observations from their inspection, process documentation, and interviews with operators and their perceptions. [Pg.78]

The HAZOP session is recorded on a personal (laptop or desktop) computer by the person assigned to be the recorder. A program for this purpose maybe HAZSEC available from Technica. 1 his record is not a verbatim transcript it is a recording of intermediate or final results as directed h> ihc team leader. [Pg.87]

Secondaiy batteries consist of a series of electrochemical cells. The most popular types are the lead-acid type used for starting, lighting, and electrical systems in motor vehicles and the small rechargeable batteries used in laptops, camcorders, digital phones, and portable electronic appliances. [Pg.118]

A variety of different rechargeable batteries provides the power for camcorders, laptops, digital phones and other portable electronic equipment. The following are some ot the most common batteries used for these applications. [Pg.120]

Another reason for choosing the automobile is its development as a mobile office. Cellular phones, laptop computers, and satellite linkups to hand-held conmiiinication devices—all of which arc getting smaller and smaller—have made it possible to be more productive from the roadways. [Pg.134]

Scientists are forever searching for electronic components like transistors that will perform their function with minimum production of heat. In early versions of personal computers the heat produced by the components could not be dissipated by natural means and fans were used to force the heat to the surroundings. Most contemporary personal computers, including laptops, rely on removing heat by natural means and do not require fans. [Pg.605]

Lexan, a polycarbonate prepared from diphenyl carbonate and bisphenol A, is another commercially valuable polyester. Lexan has an unusually high impact strength, making it valuable for use in telephones, bicycle safety helmets, and laptop computer cases. [Pg.820]

Piezoelectric fans are small, low-power, relatively low-noise, solid-state devices that provide viable thermal management solutions for a variety of portable electronic appliances, including laptop computers and cellular phones. In these fans piezoceramic patches are bonded onto thin, low-frequency flexible blades driven at resonance frequency, thereby creating an air stream directed at the electronics components. Thereby, up to 100% improvement over natural convective heat transfer can be achieved (Acikalin et al. 2004). [Pg.10]

Neber, H., Heumann-Ruprecht, D. (2006). Discovering learning by experimenting in chemistry. In I. Herztstell (Ed.), From the Nurenberg funnel to the laptop (pp. 289-298). Bonn, Germany DVR... [Pg.134]

Due to new opportunities and continued computer min-iaturizations (e.g., laptops replacing desktops and desktops getting smaller), the HDD is in transition to smaller form factors. The 2.5 in. and smaller disk sizes are rapidly growing. In 2004, a quarter of HDD shipments were 2.5 in. or smaller. By 2008 these smaller form factor drives could count for about one-half of HDD shipments. [Pg.231]

In distributed systems, each participating site must be equipped with a desktop or a laptop computer loaded with the distributed data collection system software to collect and enter data locally. In addition, each site is provided with necessary storage devices such as tapes, zip diskettes, and CDs and peripheral devices such as printers. Collected data are transferred periodically to the central location as files saved on storage devices, via phone modems, by FTP, or through wireless communications, where they are managed by a centralized data management system. [Pg.607]

Desktop computers have the advantage of stability and security over laptops, whereas laptops have the advantage of mobility. However, laptops are fragile and are prone to theft and damage. Safeguards must be put in place to prevent this from happening. [Pg.608]


See other pages where Laptops is mentioned: [Pg.783]    [Pg.789]    [Pg.354]    [Pg.354]    [Pg.1117]    [Pg.1171]    [Pg.80]    [Pg.82]    [Pg.117]    [Pg.120]    [Pg.121]    [Pg.121]    [Pg.236]    [Pg.401]    [Pg.523]    [Pg.898]    [Pg.898]    [Pg.899]    [Pg.899]    [Pg.504]    [Pg.238]    [Pg.531]    [Pg.552]    [Pg.293]    [Pg.323]    [Pg.610]    [Pg.640]    [Pg.408]    [Pg.101]    [Pg.196]    [Pg.289]    [Pg.597]   
See also in sourсe #XX -- [ Pg.597 ]

See also in sourсe #XX -- [ Pg.244 , Pg.245 ]




SEARCH



Fuel cells laptops/digital cameras

Laptop computer

Laptop computer with fuel cell

Laptop displays

Ultimate laptop

Worldwide Laptops

© 2024 chempedia.info