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Van Laar
Van Laar is a Dutch surname. Notable people with the surname include: * Johannes van Laar (1860–1938), Dutch chemist * Roelof van Laar (born 1981), Dutch politician * Timothy Van Laar (born 1951), American artist See also * Laar (surname) * the Van Laar equation The Van Laar equation is a thermodynamic activity model, which was developed by Johannes van Laar in 1910-1913, to describe phase equilibria of liquid mixtures. The equation was derived from the Van der Waals equation. The original van der Waals pa ... {{surname Surnames of Dutch origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Surname
Dutch names consist of one or more given names and a surname. The given name is usually gender-specific. Dutch given names A Dutch child's birth and given name(s) must be officially registered by the parents within 3 days after birth. It is not uncommon to give a child several given names. Usually the first one is for daily use, often in a diminutive form. Traditionally, Catholics often chose Latinisation of names, Latinized names for their children, such as ''Catharina'' and ''Wilhelmus'', while Protestants more commonly chose simple Dutch forms such as ''Trijntje'' and ''Willem''. In both cases, names were often shortened for everyday use (''Wilhelmus'' and ''Willem'' became ''Wim''). In 2014 39% of Dutch children received one name, another 38% were given two names, 20% had three names, 2% got four names and only a few hundred children had five or more given names. Dutch (Netherlands) naming law (given names) The Dutch people, Dutch naming legislation allows nearly all given na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Van Laar
Johannes van Laar (10 July 1860 in The Hague – 9 December 1938 in Montreux) was a Dutch chemist who is best known for the equations regarding chemical activity (Van Laar equation). Biography Van Laar lost his parents early, his mother in 1862 and his father 1873. From that point on his uncle N. A. Rost van Tonningen was responsible for him. He finished school in 1876 and joined the Royal Naval Institute at Willemsoord. After several trips on steam ships and reaching the rank of a sub-lieutenant he asked for discharge when he became of age. Van Laar started his studies of physics, chemistry and mathematics at the University of Amsterdam in 1891. Johannes van der Waals, and Jacobus Henricus van 't Hoff both were professors at that University in that time. His education deprived him from obtaining a Ph.D. and therefore a career at a Dutch University was nearly impossible. After being a teacher at a middle school he became unsalaried lecturer at the University of Amsterdam 1898 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roelof Van Laar
Roelof Peter van Laar (born 19 May 1981) is a Dutch politician. As a member of the Labour Party (Partij van de Arbeid) he was an MP between 14 May 2013 and 23 March 2017. At first he temporarily replaced Lea Bouwmeester who was on maternity leave. From 2006 to 2010 and from 2011 to 2012, he was a member of the municipal council of Leiden. From 2008 to 2013 he was director of a foundation involving stopping child sexual abuse. He was also co-founder of this foundation. Van Laar studied political science at Leiden University and is studying for an MBA at Webster University Webster University is a private university with its main campus in Webster Groves, Missouri. It has multiple branch locations across the United States and countries across Europe, Asia, and Africa. It offers undergraduate and graduate program .... In 2015 there were reservations about his policy because he is not asking critical questions about the output of development aid. References External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timothy Van Laar
Timothy Van Laar (born 1951 in Ann Arbor, Michigan) is an American artist, writer and full-time professor. Art career Van Laar produces art works in multiple formats including, paintings, drawings and installation pieces many of which have been exhibited throughout North America and Europe. He has received fellowships and grants and other support from multiple organizations including Fulbright, Yaddo, the Howard Foundation, the Illinois Arts Council, and the Pew Charitable Trusts. Some of the most well known works are the postcard paintings Van Laar has been featured in exhibits at major art museums, including The Detroit Institute of Arts. Van Laar's most recent artworks deal with the nature of representation in painting. A single painting merges multiple historical approaches to how paint is applied, how paintings create meaning, and how paintings define their subject matter. Writing He is the co-author of three books with Leonard Diepeveen: ''Active Sights: Art as Social ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laar (surname)
Laar is a surname. Notable people with the surname include: *Conrad Laar (1853–1929), German chemist *Getter Laar (born 1989), Estonian football player * Johannes van Laar (1860–1938), Dutch chemist * Mart Laar (born 1960), Estonian politician and historian *Roelof van Laar (born 1981), Dutch politician *Timothy Van Laar (born 1951), American artist and writer See also * Laar Laar () is a community in the district of Grafschaft Bentheim in Lower Saxony. The community’s name comes from the Old Dutch for “glade in the woods”. Geography Location Laar lies northwest of Nordhorn on the German-Dutch border. It belong ..., Lower Saxony, Germany {{Surname, Laar Dutch-language surnames Estonian-language surnames German-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Laar Equation
The Van Laar equation is a thermodynamic activity model, which was developed by Johannes van Laar in 1910-1913, to describe phase equilibria of liquid mixtures. The equation was derived from the Van der Waals equation. The original van der Waals parameters didn't give good description of vapor-liquid equilibria of phases, which forced the user to fit the parameters to experimental results. Because of this, the model lost the connection to molecular properties, and therefore it has to be regarded as an empirical model to correlate experimental results. Equations Van Laar derived the excess enthalpy from the van der Waals equation: : H^= \frac \left( \frac- \frac \right)^2 In here ''a''i and ''b''i are the van der Waals parameters for attraction and excluded volume of component i. He used the conventional quadratic mixing rule for the energy parameter ''a'' and the linear mixing rule for the size parameter ''b.'' Since these parameters didn't lead to good phase equilibrium desc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
