339,357 research outputs found
Lal, Harbans, Ph.D.
No full textDr. Lal, Professor and Chairman of Pharmacology, began his career with TCOM in 1980. He shares his early goals as faculty, his research, and his outlook on the school's future.
Interviewed by Blake Hailey, February 8, 199
Unusual Anions [LAl(SH)(S)]<sup>-</sup> and [LAl(S)<sub>2</sub>]<sup>2-</sup> Stabilized by Weakly Coordinating Imidazolium Cations. Synthesis of LAl(SSiMe<sub>2</sub>)<sub>2</sub>O (L = HC[C(Me)N(Ar)]<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
No full textDeprotonation of an Al−SH moiety has been achieved easily by
using N-heterocyclic carbene as the base. Monomeric mono- and
bis-imidazolium salts [CtH+][LAl(SH)(S)]- ([CtH+] = N,N‘-bis-tert-butylimidazolium), [CmH+][LAl(SH)(S)]-, and [CmH+]2[LAl(S)2]2-
([CmH+] = N,N‘-bismesitylimidazolium), containing unusual anions
[LAl(SH)(S)]- and [LAl(S)2]2-, have been synthesized in nearly
quantitative yields. Furthermore, [CmH+]2[LAl(S)2]2- has been
successfully used for the preparation of LAl(SSiMe2)2O containing
the [O(Me2SiS)2]2- ligand
Unusual Anions [LAl(SH)(S)]<sup>-</sup> and [LAl(S)<sub>2</sub>]<sup>2-</sup> Stabilized by Weakly Coordinating Imidazolium Cations. Synthesis of LAl(SSiMe<sub>2</sub>)<sub>2</sub>O (L = HC[C(Me)N(Ar)]<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
No full textDeprotonation of an Al−SH moiety has been achieved easily by
using N-heterocyclic carbene as the base. Monomeric mono- and
bis-imidazolium salts [CtH+][LAl(SH)(S)]- ([CtH+] = N,N‘-bis-tert-butylimidazolium), [CmH+][LAl(SH)(S)]-, and [CmH+]2[LAl(S)2]2-
([CmH+] = N,N‘-bismesitylimidazolium), containing unusual anions
[LAl(SH)(S)]- and [LAl(S)2]2-, have been synthesized in nearly
quantitative yields. Furthermore, [CmH+]2[LAl(S)2]2- has been
successfully used for the preparation of LAl(SSiMe2)2O containing
the [O(Me2SiS)2]2- ligand
PHIL Accelerator at LAL - Diagnostic status
No full texthttp://accelconf.web.cern.ch/AccelConf/BIW2010/papers/tupsm100.pdfInternational audienceThe "Photo-Injector at LAL" (PHIL : http://phil.lal.in2p3.fr/) is a new electron beam accelerator at LAL. This accelerator is dedicated to test and characterise electron photo-guns and high-frequency structures for future accelerator projects (like the next generation lepton colliders, CLIC, ILC). This machine has been designed to produce low energy (E<10 MeV), small emittance (epsilon < 10 pi.mm.mrad), high current (charge 2 nC/bunch) electrons bunch at low repetition frequency (frep<10Hz) [1]. The first beam has been obtained on the 4th of November 2009. This paper will describe the current status and the futures developments of the diagnostics devices on this machine
Unusual Anions [LAl(SH)(S)]<sup>-</sup> and [LAl(S)<sub>2</sub>]<sup>2-</sup> Stabilized by Weakly Coordinating Imidazolium Cations. Synthesis of LAl(SSiMe<sub>2</sub>)<sub>2</sub>O (L = HC[C(Me)N(Ar)]<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
No full textDeprotonation of an Al−SH moiety has been achieved easily by
using N-heterocyclic carbene as the base. Monomeric mono- and
bis-imidazolium salts [CtH+][LAl(SH)(S)]- ([CtH+] = N,N‘-bis-tert-butylimidazolium), [CmH+][LAl(SH)(S)]-, and [CmH+]2[LAl(S)2]2-
([CmH+] = N,N‘-bismesitylimidazolium), containing unusual anions
[LAl(SH)(S)]- and [LAl(S)2]2-, have been synthesized in nearly
quantitative yields. Furthermore, [CmH+]2[LAl(S)2]2- has been
successfully used for the preparation of LAl(SSiMe2)2O containing
the [O(Me2SiS)2]2- ligand
Unusual Anions [LAl(SH)(S)]<sup>-</sup> and [LAl(S)<sub>2</sub>]<sup>2-</sup> Stabilized by Weakly Coordinating Imidazolium Cations. Synthesis of LAl(SSiMe<sub>2</sub>)<sub>2</sub>O (L = HC[C(Me)N(Ar)]<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)
No full textDeprotonation of an Al−SH moiety has been achieved easily by
using N-heterocyclic carbene as the base. Monomeric mono- and
bis-imidazolium salts [CtH+][LAl(SH)(S)]- ([CtH+] = N,N‘-bis-tert-butylimidazolium), [CmH+][LAl(SH)(S)]-, and [CmH+]2[LAl(S)2]2-
([CmH+] = N,N‘-bismesitylimidazolium), containing unusual anions
[LAl(SH)(S)]- and [LAl(S)2]2-, have been synthesized in nearly
quantitative yields. Furthermore, [CmH+]2[LAl(S)2]2- has been
successfully used for the preparation of LAl(SSiMe2)2O containing
the [O(Me2SiS)2]2- ligand
Low Energy Beam Measurements Using PHIL Accelerator at LAL, Comparison with PARMELA Simulations
No full texthttp://accelconf.web.cern.ch/AccelConf/PAC2011/papers/wep210.pdfInternational audiencePHIL ("PHoto-Injector at LAL") is a new electron beam accelerator at LAL. This accelerator is dedicated to test and characterize electron RF-guns and to deliver electron beam to users. This machine has been designed to produce and characterise low energy (E<10 MeV), small emittance (e<10 p.mm.mrad), high brilliance electrons bunch at low repetition frequency (n<10Hz). The first beam has been obtained on the 4th of November 2009. The current RF-gun tested on PHIL is the AlphaX gun, a 2.5 cell S-band cavity designed by LAL for the plasma accelerator studies performed at the Strathclyde university. This paper will present the first AlphaX RF-gun characterizations performed at LAL on PHIL accelerator, and will show comparisons between measurements and PARMELA simulations
S. K. Satheesh Receives 2017 Devendra Lal Memorial Medal
No full textS. K. Satheesh was awarded the 2017 Devendra Lal Memorial Medal at the American Geophysical Union Fall Meeting Honors Ceremony, held on 13 December 2017 in New Orleans, La. The medal is for “outstanding Earth and/or space sciences research by a scientist belonging to and working in a developing nation.”</jats:p
PHIL: a Test Beam line at LAL
No full textWEPP078International audienceIn the framework of a European contract*, LAL is in charge of the construction of one photo-injector for the drive beam linac of the CLIC Test Facility 3 [1] at CERN. This contract together with national funds allowed LAL to build a home test accelerator, PHIL, with the same photo-injector as for CTF3. The goal is to undergo experiments on the design and technology of advanced RF guns, to develop diagnostics and feedback techniques, a part of the beam time will be also shared with users of the electron beam. So far, the construction of this accelerator at LAL was very much delayed because of the legal obligation to upgrade the radiation shielding in agreement with the actual radiation safety thresholds. The required civil engineering is now finished and the installation of the components is under way. We will first present a design of the accelerator and few dynamic simulation results. Finally we will give an up to date status of the accelerator construction
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