KHN

	KHN KHN may refer to * Knoop hardness number * Kerwin-Huelsman-Newcomb, a type of electronic filter * IATA code of Nanchang Changbei International Airport, in Jiangxi province, China * Kaiser Health News * Kettering Health Network {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Nanchang Changbei International Airport Nanchang Changbei International Airport is an airport serving Nanchang, the capital of Jiangxi province, China. It is located north of Nanchang. Construction began in October 1996 and the airport went into operation on 10 September 1999, replacing Nanchang Xiangtang Airport. It was upgraded to an international airport and was greatly expanded in 2008–2011. History Nanchang Xiangtang Airport, a dual-use civil and military airport, served as Nanchang's main airport from 1957 to 1999. From 102 passengers in 1957, by 1996 Xiangtang served more than 800,000 passengers annually and could no longer accommodate more traffic. In 1996, construction began for Changbei Airport, originally designed to handle 2 million passengers annually. On 10 September 1999, Changbei Airport was opened and all commercial flights were transferred from Xiangtang, which reverted to sole military use. In 2003, Capital Airport Holding took over the operation of Changbei Airport from the Jiangxi Provincial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Kaiser Health News KFF (Kaiser Family Foundation), also known as The Henry J. Kaiser Family Foundation, is an American non-profit organization, headquartered in San Francisco, California. It prefers KFF since its legal name can cause confusion as it is no longer a foundation or a family foundation, and is not associated with Kaiser Permanente. KFF focuses on major health care issues facing the nation, as well as U.S. role in global health policy. KFF states that it is a non-partisan source of facts and analysis, polling and journalism for policymakers, the media, the health care community, and the general public, and its website has been heralded for having the "most up-to-date and accurate information on health policy" and as a "must-read for healthcare devotees." Current activities Policy analysis and polling KFF publishes analysis, polling and journalism about health-care issues, and states that much of its work especially concerns persons with low income or those who are otherwise especially v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Knoop Hardness Number The Knoop hardness test is a microhardness test – a test for mechanical hardness used particularly for very brittle materials or thin sheets, where only a small indentation may be made for testing purposes. A pyramidal diamond point is pressed into the polished surface of the test material with a known (often 100g) load, for a specified dwell time, and the resulting indentation is measured using a microscope. The geometry of this indenter is an extended pyramid with the length to width ratio being 7:1 and respective face angles are 172 degrees for the long edge and 130 degrees for the short edge. The depth of the indentation can be approximated as 1/30 of the long dimension. The Knoop hardness ''HK'' or ''KHN'' is then given by the formula: :HK where: :''L'' = length of indentation along its long axis :''C''p = correction factor related to the shape of the indenter, ideally 0.070279 :''P'' = load HK values are typically in the range from 100 to 1000, when specified in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Kerwin-Huelsman-Newcomb A state variable filter is a type of active filter in electronic circuits. It consists of one or more integrators, connected in some feedback configuration. It is essentially used when precise Q factor is required, as other multi-order filters are unable to provide. The most common implementation sums the input signal with its integral and its double integral, another is an MDAC based implementation. Kerwin–Huelsman–Newcomb (KHN) biquad filter example The example given below can produce simultaneous lowpass, highpass, and bandpass outputs from a single input. This is a second-order ( biquad) filter. Its derivation comes from rearranging a high-pass filter's transfer function, which is the ratio of two quadratic functions. The rearrangement reveals that one signal is the sum of integrated copies of another. That is, the rearrangement reveals a state-variable-filter structure. By using different states as outputs, different kinds of filters can be produced. In more general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]