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The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z).Literally speaking the epoch is Unix time 0 (midnight 1/1/1970), but 'epoch' is often used as a synonym for Unix time.Some systems store epoch dates as a signed 32-bit integer, which might cause problems on January 19, 2038 (known as the Year 2038 problem or Y2038).The converter on this page converts timestamps in seconds (10-digit), milliseconds (13-digit) and microseconds (16-digit) to readable dates.
This guide describes the installation of a digital-to-analog converter box with your current antenna and analog TV. This guide will help you prepare so that when you purchase a converter box you will know what to expect and whether you may need help setting it up.
Supplies: You will need your analog TV, the antenna you have been using (indoor or outdoor), and the coaxial wire that currently connects your antenna to your TV (as pictured on the right). Your new converter box will come with a coaxial wire and a remote control. Before you begin the installation of the converter box, you should unplug your TV.
For instructions on how to connect your converter box if it does not include an analog pass-through feature or for instructions on connecting your converter box to other components such as a VCR, go to www.fcc.gov/digital-television or contact the FCC by calling 1-888-CALL-FCC (1-888-225-5322) voice or 1-888-TELL-FCC (1-888-835-5322) TTY.
This free online file converter lets you convert media easy and fast from one format to another. We support a lot of different source formats, just try. If you can't find the conversion you need, please let us know and write us an e-mail. We probably can help you...
Technology Level 3: A DEEC-Tec-based ocean wave energy converter is an example of an energy harnessing/converting structure made of DEEC-Tec metamaterials. DEEC-Tec-based wave energy converters have two defining characteristics:
NREL has extensive experience in developing materials for both FMDEC structures and embedded distributed energy converters. This experience, to name of few, leverages techniques ranging from upcycling of used polymers to the development of novel new elastomer electrodes.
NREL is familiar with and has the experience necessary for the co-design of DEEC-Tec-based ocean wave energy converters. Inherent in their nature, DEEC-Tec-based converters require the co-design and concurrent engineering of, at minimum:
Neither converters nor their representatives are allowed to sell the new motor vehicles they convert directly to Texas consumers, including municipalities. Only dealers that are franchised and licensed for the underlying line-make of the converted vehicle are allowed to sell converted vehicles to Texas consumers. If a converted new motor vehicle is sold through a bid process, a franchised dealer for the underlying chassis line-make must be listed on the bid as the seller.
The converter is not required to purchase the motor vehicle it will convert from a Texas franchised dealer. However, once the conversion is complete, the vehicle can only be sold to the end-user by a franchised and licensed Texas motor vehicle dealer for the underlying chassis line-make. The franchised dealer must invoice the end-user for the entire purchase price of the vehicle, including the conversion package, obtain payment for the entire purchase price, and perform the titling work on the complete vehicle. How the converter is paid for the conversion package and conversion work is between the converter and the franchised dealer.
If a person makes substantial modifications to a new motor vehicle and the resulting product is an ambulance, fire-fighting vehicle, or motorhome, as those terms are defined in Chapter 2301 of the Texas Occupations Code, then the person must obtain a manufacturer license, not a converter license. However, if even one of the conversions produced does not meet the exact definition of ambulance, fire-fighting vehicle, or motorhome, then a converter license, as well as a manufacturer license, is required.
Converters are not required to be physically located in Texas. Even if the converter is located in another state, as long as new motor vehicles they convert are sold in Texas, the converter must have a converter license issued by Texas Department of Motor Vehicles.
After constantly using a calculator to convert between Ether units i thought it would neat toimplement the EthereumJS-Unitslibrary and BigNumber library on awebsite for everyone to use.There is a simple and full converterpage, since the majority wouldn'tbother for any other units than Ether, Gwei and Wei.
Autodesk FBX SDK is a free* C++ software development kit (SDK) that lets you create plug-ins, converters, and other applications that use Autodesk FBX technology. With FBX you can translate and exchange 3D assets and media from a variety of sources quickly and easily. The SDK is available for Windows, OSX, iOS, and Linux operating systems, which enables software and hardware vendors to add support for the FBX format.
A catalytic converter is an exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including lean-burn engines, and sometimes on kerosene heaters and stoves.
The first widespread introduction of catalytic converters was in the United States automobile market. To comply with the U.S. Environmental Protection Agency's stricter regulation of exhaust emissions, most gasoline-powered vehicles starting with the 1975 model year are equipped with catalytic converters.[1][2][3] These "two-way" converters combine oxygen with carbon monoxide (CO) and unburned hydrocarbons (HC) to produce carbon dioxide (CO2) and water (H2O). Although two-way converters on gasoline engines were rendered obsolete in 1981 by "three-way" converters that also reduce oxides of nitrogen (.mw-parser-output .template-chem2-sudisplay:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em.mw-parser-output .template-chem2-su>spandisplay:block;text-align:left.mw-parser-output sub.template-chem2-subfont-size:80%;vertical-align:-0.35em.mw-parser-output sup.template-chem2-supfont-size:80%;vertical-align:0.65emNOx);[4] they are still used on lean-burn engines to oxidize particulate matter and hydrocarbon emissions (including diesel engines, which typically use lean combustion), as three-way-converters require fuel-rich or stoichiometric combustion to successfully reduce NOx.
Although catalytic converters are most commonly applied to exhaust systems in automobiles, they are also used on electrical generators, forklifts, mining equipment, trucks, buses, locomotives, motorcycles, and on ships. They are even used on some wood stoves to control emissions.[5] This is usually in response to government regulation, either through environmental regulation or through health and safety regulations.
Catalytic converter prototypes were first designed in France at the end of the 19th century, when only a few thousand "oil cars" were on the roads; these prototypes had inert clay-based materials coated with platinum, rhodium, and palladium and sealed into a double metallic cylinder.[6] A few decades later, a catalytic converter was patented by Eugene Houdry, a French mechanical engineer. Houdry was an expert in catalytic oil refining, having invented the catalytic cracking process that all modern refining is based on today.[7] Houdry moved to the United States in 1930 to live near the refineries in the Philadelphia area and develop his catalytic refining process. When the results of early studies of smog in Los Angeles were published, Houdry became concerned about the role of smokestack exhaust and automobile exhaust in air pollution and founded a company called Oxy-Catalyst. Houdry first developed catalytic converters for smokestacks, called "cats" for short, and later developed catalytic converters for warehouse forklifts that used low grade, unleaded gasoline.[8] In the mid-1950s, he began research to develop catalytic converters for gasoline engines used on cars and was awarded United States Patent 2,742,437 for his work.[9]
Catalytic converters were further developed by a series of engineers including Carl D. Keith, John J. Mooney, Antonio Eleazar, and Phillip Messina at Engelhard Corporation,[10][11] creating the first production catalytic converter in 1973.[12][unreliable source?]
The first widespread introduction of catalytic converters was in the United States automobile market. To comply with the U.S. Environmental Protection Agency's new exhaust emissions regulations, most gasoline-powered vehicles manufactured from 1975 onwards are equipped with catalytic converters. Early catalytic converters were "two-way", combining oxygen with carbon monoxide (CO) and unburned hydrocarbons (HC, chemical compounds in fuel of the form CmHn) to produce carbon dioxide (CO2) and water (H2O).[4][1][2][3] These stringent emission control regulations also resulted in the removal of the antiknock agent tetraethyl lead from automotive gasoline, to reduce lead in the air. Lead and its compounds are catalyst poisons and foul catalytic converters by coating the catalyst's surface. Requiring the removal of lead allowed the use of catalytic converters to meet the other emission standards in the regulations.[13]
Catalytic converters require a temperature of 400 C (752 F) to operate effectively. Therefore, they are placed as close to the engine as possible, or one or more smaller catalytic converters (known as "pre-cats") are placed immediately after the exhaust manifold.
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