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Alexander Pines
Alexander Pines (born June 22, 1945) is an American chemist. He is the Glenn T. Seaborg Professor Emeritus, University of California, Berkeley, Chancellor's Professor Emeritus and Professor of the Graduate School, University of California, Berkeley, and a member of the California Institute for Quantitative Biosciences (QB3) and the Department of Bioengineering. He was born in 1945, grew up in Bulawayo in Southern Rhodesia (now Zimbabwe) and studied undergraduate mathematics and chemistry in Israel at Hebrew University of Jerusalem. Coming to the United States in 1968, Pines obtained his Ph.D. in chemical physics at M.I.T. in 1972 and joined the UC Berkeley faculty later that year. Research Pines is a pioneer in the development and applications of nuclear magnetic resonance (NMR) spectroscopy of non-liquid samples. In his early work, he demonstrated time-reversal of dipole-dipole couplings in many-body spin systems, and introduced high sensitivity, cross polarization NMR of dil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irving Langmuir Award
The Irving Langmuir Prize in Chemical Physics is awarded annually, in even years by the American Chemical Society and in odd years by the American Physical Society. The award is meant to recognize and encourage outstanding interdisciplinary research in chemistry and physics, in the spirit of Irving Langmuir. A nominee must have made an outstanding contribution to chemical physics or physical chemistry within the 10 years preceding the year in which the award is made. The award will be granted without restriction, except that the recipient must be a resident of the United States. The award was established in 1931 by Dr. A.C. Langmuir, brother of Nobel Prize-winning chemist Irving Langmuir, to recognize the best young chemist in the United States. A $10,000 prize was to be awarded annually by the American Chemical Society. The first recipient was Linus Pauling. In 1964, the General Electric Foundation took over the financial backing of the prize, which was renamed the Irving Langmuir A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solid-state NMR
Solid-state NMR (ssNMR) spectroscopy is a technique for characterizing atomic level structure in solid materials e.g. powders, single crystals and amorphous samples and tissues using nuclear magnetic resonance (NMR) spectroscopy. The anisotropic part of many spin interactions are present in solid-state NMR, unlike in solution-state NMR where rapid tumbling motion averages out many of the spin interactions. As a result, solid-state NMR spectra are characterised by larger linewidths than in solution state NMR, which can be utilized to give quantitative information on the molecular structure, conformation and dynamics of the material. Solid-state NMR is often combined with magic angle spinning to remove anisotropic interactions and improve the resolution as well as the sensitivity of the technique. Nuclear spin interactions The resonance frequency of a nuclear spin depends on the strength of the magnetic field at the nucleus, which can be modified by isotropic (e.g. chemical shift, is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton Enhanced Nuclear Induction Spectroscopy
Cross-polarization (CP), also known as proton-enhanced nuclear induction spectroscopy is a solid-state nuclear magnetic resonance (ssNMR) technique to transfer nuclear magnetization from different types of nuclei via heteronuclear dipolar interactions. The 1H-X cross-polarization dramatically improves the sensitivity of ssNMR experiments of most experiments involving spin-1/2 nuclei, capitalizing on the higher 1H polarisation, and shorter T1(1H) relaxation times. It was developed by Michael Gibby, Alexander Pines and Professor John S. Waugh at the Massachusetts Institute of Technology. In this technique the natural nuclear polarization of an abundant spin (typically 1H) is exploited to increase the polarization of a rare spin (such as 13C, 15N, 31P) by irradiating the sample with radio waves at the frequencies matching the Hartmann–Hahn condition: :\gamma_H B_1(^\text) = \gamma_X B_1(\text) \pm n \omega_R where \gamma are the gyromagnetic ratio In physics, the gyromagneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon-13
Carbon-13 (13C) is a natural, stable isotope of carbon with a nucleus containing six protons and seven neutrons. As one of the environmental isotopes, it makes up about 1.1% of all natural carbon on Earth. Detection by mass spectrometry A mass spectrum of an organic compound will usually contain a small peak of one mass unit greater than the apparent molecular ion peak (M) of the whole molecule. This is known as the M+1 peak and comes from the few molecules that contain a 13C atom in place of a 12C. A molecule containing one carbon atom will be expected to have an M+1 peak of approximately 1.1% of the size of the M peak, as 1.1% of the molecules will have a 13C rather than a 12C. Similarly, a molecule containing two carbon atoms will be expected to have an M+1 peak of approximately 2.2% of the size of the M peak, as there is double the previous likelihood that any molecule will contain a 13C atom. In the above, the mathematics and chemistry have been simplified, however it ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Magnetic Resonance
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca. 20 tesla, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR results from specific magnetic properties of certain atomic nuclei. Nuclear magnetic resonance spectroscopy is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials. NM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebrew University Of Jerusalem
The Hebrew University of Jerusalem (HUJI; he, הַאוּנִיבֶרְסִיטָה הַעִבְרִית בִּירוּשָׁלַיִם) is a public research university based in Jerusalem, Israel. Co-founded by Albert Einstein and Dr. Chaim Weizmann in July 1918, the public university officially opened in April 1925. It is the second-oldest Israeli university, having been founded 30 years before the establishment of the State of Israel but six years after the older Technion university. The HUJI has three campuses in Jerusalem and one in Rehovot. The world's largest library for Jewish studies—the National Library of Israel—is located on its Edmond J. Safra campus in the Givat Ram neighbourhood of Jerusalem. The university has five affiliated teaching hospitals (including the Hadassah Medical Center), seven faculties, more than 100 research centers, and 315 academic departments. , one-third of all the doctoral candidates in Israel were studying at the HUJI. Among its fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zimbabwe
Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to the north, and Mozambique to the east. The capital and largest city is Harare. The second largest city is Bulawayo. A country of roughly 15 million people, Zimbabwe has 16 official languages, with English, Shona, and Ndebele the most common. Beginning in the 9th century, during its late Iron Age, the Bantu people (who would become the ethnic Shona) built the city-state of Great Zimbabwe which became one of the major African trade centres by the 11th century, controlling the gold, ivory and copper trades with the Swahili coast, which were connected to Arab and Indian states. By the mid 15th century, the city-state had been abandoned. From there, the Kingdom of Zimbabwe was established, followed by the Rozvi and Mutapa empires. The British Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Rhodesia
Southern Rhodesia was a landlocked self-governing colony, self-governing British Crown colony in southern Africa, established in 1923 and consisting of British South Africa Company (BSAC) territories lying south of the Zambezi River. The region was informally known as south Zambesia until annexed by Britain at the behest of Cecil Rhodes's British South Africa Company, for whom the colony was named. The bounding territories were Bechuanaland (Botswana), Northern Rhodesia (Zambia), Moçambique (Mozambique), and the South African Republic, Transvaal Republic (for two brief periods instead the British Transvaal Colony, from 1910 the Union of South Africa, and then from 1961 the South Africa, Republic of South Africa). This southern region, known for its extensive gold reserves, was first purchased by the BSAC's Pioneer Column on the strength of a Mineral Concession extracted from its Matabele overlord, Lobengula, and various majority Mashona vassal chiefs in 1890. Though parts of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Institute For Quantitative Biosciences
The California Institute for Quantitative Biosciences (QB3) is a nonprofit research and technology commercialization institute affiliated with three University of California campuses in the San Francisco Bay Area: Berkeley, San Francisco, and Santa Cruz. QB3's domain is the quantitative biosciences: areas of biology in which advances are chiefly made by scientists applying techniques from physics, chemistry, engineering, and computer science. History QB3 was founded in 2000 as one of four Governor Gray Davis Institutes for Science and Innovation (originally, California Institutes for Science and Innovation, or Cal ISIs). From a 2005 article written for the University of California Academic Senate: The Institutes were launched in 2000 as an ambitious statewide initiative to support research in fields that were recognized as critical to the economic growth of the state—biomedicine, bioengineering, nanosystems, telecommunications and information technology. Moreover, the Cal IS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camille Dreyfus Teacher-Scholar Awards
The Camille Dreyfus Teacher-Scholar Awards are awards given to early-career researchers in chemistry by The Camille and Henry Dreyfus Foundation, Inc. "to support the research and teaching careers of talented young faculty in the chemical sciences." The Dreyfus Teacher-Scholar program began in 1970. In 1994, the program was divided into two parallel awards: The Camille Dreyfus Teacher-Scholar Awards Program, aimed at research universities, and the Henry Dreyfus Teacher-Scholar Awards Program, directed at primarily undergraduate institutions. This list compiles all the pre-1994 Teacher-Scholars, and the subsequent Camille Dreyfus Teacher-Scholars. The annually presented awards consist of a monetary prize of $75,000, which was increased to $100,000 starting in 2019. Seven winners of the Camille Dreyfus Teacher-Scholar Awards have gone on to win the Nobel Prize in Chemistry, including Paul L. Modrich, Richard R. Schrock, Robert H. Grubbs, K. Barry Sharpless, Ahmed H. Zewail, Mario J. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bourke Award
The Bourke Award of the Royal Society of Chemistry is an annual prize open to academics from outside the UK. Originally established by the Faraday Society and known as the Bourke Lectures, the award of £2000 enables experts in physical chemistry or chemical physics to present their work in the UK. The winner also receives a commemorative medal. Winners Source: See also * List of chemistry awards This list of chemistry awards is an index to articles about notable awards for chemistry. It includes awards by the Royal Society of Chemistry, the American Chemical Society, the Society of Chemical Industry and awards by other organizations. ... References {{Royal Society of Chemistry Awards of the Royal Society of Chemistry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
