Advanced Search
Display options
Filter resources
Text Availability
Article type
Publication date
Species
Language
Sex
Age
Showing 1 to 12 of 1003 entries
Sorted by: Best Match Show Resources per page
Sci-Fri PM: Planning-01: Measured electron and x-ray angular distribution data for benchmarking Monte Carlo codes.

Medical physics

Cojocaru CD, Ross CK, McEwen MR, McDonald AF, Faddegon BA.
PMID: 28512874
Med Phys. 2008 Jul;35(7):3412. doi: 10.1118/1.2965973.

Monte Carlo (MC) studies of the output of medical linear accelerators have demonstrated that in-air profiles are useful in the beam commissioning process. A recent investigation of x-ray profiles (Tonkopi et al, Med. Phys 32 (9), 2005) showed very...

Compton polarimeter for 10-30 keV x rays.

The Review of scientific instruments

Weber S, Beilmann C, Shah C, Tashenov S.
PMID: 26429432
Rev Sci Instrum. 2015 Sep;86(9):093110. doi: 10.1063/1.4931165.

We present a simple and versatile polarimeter for x rays in the energy range of 10-30 keV. It uses Compton scattering in low-Z materials such as beryllium or boron carbide. The azimuthal distribution of the scattered x rays is...

Determination of Beryllium in Soil and Sediment by Graphite Furnace Atomic Absorption with a Microwave-Acid Digestion Method.

Guang pu xue yu guang pu fen xi = Guang pu

Lin HL, Gan J, Yu L, Zhu RL, Tian Y, Luo YP.
PMID: 26978948
Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Nov;35(11):3275-80.

A method for determination of beryllium in soils and sediments by microwave-acid digestion/graphite furnace atomic absorption (GFAA) is described. In this paper, the working conditions of the instrument are optimized, the drawing of calibration curve is expounded, the pretreatment...

Roothaan's approach to solve the Hartree-Fock equations for atoms confined by soft walls: Basis set with correct asymptotic behavior.

The Journal of chemical physics

Rodriguez-Bautista M, Díaz-García C, Navarrete-López AM, Vargas R, Garza J.
PMID: 26203010
J Chem Phys. 2015 Jul 21;143(3):034103. doi: 10.1063/1.4926657.

In this report, we use a new basis set for Hartree-Fock calculations related to many-electron atoms confined by soft walls. One- and two-electron integrals were programmed in a code based in parallel programming techniques. The results obtained with this...

Alternating current calorimeter for specific heat capacity measurements at temperatures below 10 K and pressures up to 10 GPa.

The Review of scientific instruments

Umeo K.
PMID: 27370464
Rev Sci Instrum. 2016 Jun;87(6):063901. doi: 10.1063/1.4952959.

A developed alternating current calorimeter for measuring the absolute value of specific heat C of a very small sample under a pressure up to 10 GPa and low temperature below 10 K is described. A Bridgman anvil cell made...

Atomic-Layer Deposition of Single-Crystalline BeO Epitaxially Grown on GaN Substrates.

ACS applied materials & interfaces

Lee SM, Yum JH, Yoon S, Larsen ES, Lee WC, Kim SK, Shervin S, Wang W, Ryou JH, Bielawski CW, Oh J.
PMID: 29148718
ACS Appl Mater Interfaces. 2017 Dec 06;9(48):41973-41979. doi: 10.1021/acsami.7b13487. Epub 2017 Nov 27.

We have grown a single-crystal beryllium oxide (BeO) thin film on a gallium nitride (GaN) substrate by atomic-layer deposition (ALD) for the first time. BeO has a higher thermal conductivity, bandgap energy, and dielectric constant than SiO

Spectrofluorimetric Determination of Beryllium by Mean Centering of Ratio Spectra.

Journal of fluorescence

Chamsaz M, Samghani K, Arbab-Zavar MH, Heidari T.
PMID: 27265354
J Fluoresc. 2016 Jul;26(4):1401-5. doi: 10.1007/s10895-016-1831-2. Epub 2016 Jun 06.

Trace amounts of beryllium has been determined by spectrofluorimetric method that used morin as fluorimetric reagent. Beryllium gives a highly fluorescent complex with morin. The excitation wavelength of morin and Be-morin complex were 410 and 430. The fluorescence spectra...

Complex beryllium amidoboranes: Structures, stability, and evaluation of their potential as hydrogen storage materials.

Journal of computational chemistry

Davydova EI, Lisovenko AS, Timoshkin AY.
PMID: 27991678
J Comput Chem. 2017 Mar 15;38(7):401-405. doi: 10.1002/jcc.24681. Epub 2016 Dec 19.

Complex beryllium amidoboranes M

Semi-stochastic full configuration interaction quantum Monte Carlo: Developments and application.

The Journal of chemical physics

Blunt NS, Smart SD, Kersten JA, Spencer JS, Booth GH, Alavi A.
PMID: 25978883
J Chem Phys. 2015 May 14;142(18):184107. doi: 10.1063/1.4920975.

We expand upon the recent semi-stochastic adaptation to full configuration interaction quantum Monte Carlo (FCIQMC). We present an alternate method for generating the deterministic space without a priori knowledge of the wave function and present stochastic efficiencies for a...

Extreme decay of meteoric beryllium-10 as a proxy for persistent aridity.

Scientific reports

Valletta RD, Willenbring JK, Lewis AR, Ashworth AC, Caffee M.
PMID: 26647733
Sci Rep. 2015 Dec 09;5:17813. doi: 10.1038/srep17813.

The modern Antarctic Dry Valleys are locked in a hyper-arid, polar climate that enables the East Antarctic Ice Sheet (EAIS) to remain stable, frozen to underlying bedrock. The duration of these dry, cold conditions is a critical prerequisite when...

Beryllium-free Li4Sr(BO3)2 for deep-ultraviolet nonlinear optical applications.

Nature communications

Zhao S, Gong P, Bai L, Xu X, Zhang S, Sun Z, Lin Z, Hong M, Chen C, Luo J.
PMID: 24874872
Nat Commun. 2014 May 29;5:4019. doi: 10.1038/ncomms5019.

Nonlinear optical (NLO) materials are of great importance in laser science and technology, as they can expand the wavelength range provided by common laser sources. Few NLO materials, except KBe2BO3F2 (KBBF), can practically generate deep-ultraviolet coherent light by direct...

Theoretical Study of BeN Linear Chains: Optimized Geometries and Harmonic Frequencies.

Journal of chemical theory and computation

Monari A, Bendazzoli GL, Evangelisti S.
PMID: 26609717
J Chem Theory Comput. 2009 May 12;5(5):1266-73. doi: 10.1021/ct9001027.

The electronic structure of linear beryllium chains has been theoretically studied at an ab initio level. By using a CAS-SCF approach, geometries have been optimized and harmonic frequencies computed. The optimized geometries present almost equal bond lengths, while all...

Showing 1 to 12 of 1003 entries