A new method for charge-loss correction of room-temperature semiconductor detectors using digital trapezoidal pulse shaping

2012 ◽  
Vol 7 (06) ◽  
pp. P06006-P06006 ◽  
Author(s):  
M Nakhostin ◽  
P Veeramani
Keyword(s):  
Pulse Shaping ◽  
Room Temperature ◽  
New Method ◽  
Semiconductor Detectors ◽  
Charge Loss ◽  
Trapezoidal Pulse

Cholinium-amino acid based ionic liquids: a new method of synthesis and physico-chemical characterization

2015 ◽  
Vol 17 (32) ◽  
pp. 20687-20698 ◽  
Author(s):  
Serena De Santis ◽  
Giancarlo Masci ◽  
Francesco Casciotta ◽  
Ruggero Caminiti ◽  
Eleonora Scarpellini ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Room Temperature ◽  
Chemical Characterization ◽  
New Method ◽  
Room Temperature Ionic Liquids ◽  
Synthetic Method ◽  
Chemical Structures ◽  
Physico Chemical ◽  
Wide Range

Fourteen cholinium-amino acid based room temperature ionic liquids were prepared using a cleaner synthetic method. Chemicophysical properties were well correlated with the wide range of amino acid chemical structures.

First in-beam application of thallium bromide semiconductor detectors to particle-induced X-ray emission

2019 ◽  
Vol 29 (01n02) ◽  
pp. 53-59
Author(s):  
M. Nogami ◽  
K. Hitomi ◽  
A. Terakawa ◽  
K. Ishii
Keyword(s):  
Room Temperature ◽  
Semiconductor Detectors ◽  
Science Center ◽  
Active Volume ◽  
X Ray ◽  
Thallium Bromide ◽  
Quantum Science ◽  
First Time ◽  
Aomori Prefecture ◽  
Zone Purification

For the first time, particle-induced X-ray emission (PIXE) spectra were obtained using TlBr detectors. The TlBr detector was fabricated from a crystal grown with material purified by the zone purification. Its active volume was 1.5 mm × 1.5 mm × 3.1 mm, and it exhibited an energy resolution of a 6.2 keV full-width at half-maximum (FWHM) for 59.5 keV at room temperature. The detector was installed into a PIXE system at Aomori Prefecture Quantum Science Center. A Pb plate target in the PIXE chamber was irradiated with a 20 MeV proton beam, and X-ray peaks for Pb K[Formula: see text] and K[Formula: see text] were successfully detected by the TlBr detector at room temperature.

A Novel and Efficient Alkoxylselenenylation of Alkenes

2019 ◽  
Vol 41 (6) ◽  
pp. 1039-1039
Author(s):  
Yingguo Fang and Jie Yan Yingguo Fang and Jie Yan
Keyword(s):  
Room Temperature ◽  
Electrophilic Addition ◽  
New Method ◽  
Reaction Conditions ◽  
Selenium Species

A novel and efficient alkoxylselenenylation from alkenes, diselenides, and alcohols mediated by iodine is developed, with which a series of β-alkoxy selenides are synthesized. In this procedure, firstly, I2 reacts with diselenide to form in situ the active electrophilic selenium species RSeI, then following an electrophilic addition of it to alkenes provides β-alkoxy selenides with high regioselectivity and in good yields. This new method for achieving β-alkoxy selenides has some advantages over other methods such as using available and cheap iodine as the oxidizing species at room temperature, which makes this reaction has milder reaction conditions and simpler procedure.

scholarly journals New Method for Nucleophilic Substitution on Hexachlorocyclotriphosphazene by Allylamine Using an Algerian Proton Exchanged Montmorillonite Clay (Maghnite-H+) as a Green Solid Catalyst

2016 ◽  
Vol 11 (2) ◽  
pp. 151 ◽  
Author(s):  
Lahouaria Medjdoub ◽  
Belbachir Mohammed
Keyword(s):  
Nucleophilic Substitution ◽  
Room Temperature ◽  
Montmorillonite Clay ◽  
New Method ◽  
Solid Catalyst ◽  
H Nmr ◽  
Flight Mass Spectrometry ◽  
Crystalline Product ◽  
First Time ◽  
C Nmr

<p>Nucleophilic substitution on hexachlorocyclotriphosphazene (HCCTP) with allylamine in order to give hexa(allylamino)cyclotriphosphazene (HACTP)  is performed for the first time under mild conditions by using diethylether as solvent to replace benzene which is very toxic. The reaction time is reduced to half and also performed at room temperature but especially in the presence of an eco-catalyst called Maghnite-H<sup>+</sup>. This catalyst has a significant role in the industrial scale. In fact, the use of Maghnite is preferred for its many advantages: a very low purchase price compared to other catalysts, the easy removal of the reaction mixture. Then, Maghnite-H<sup>+</sup> is became an excellent catalyst for many chemical reactions. The structure of HACTP synthesized in the presence of Maghnite-H<sup>+</sup> to 5% by weight is confirmed by <sup>1</sup>H-NMR, <sup>13</sup>C-NMR, <sup>31</sup>P-NMR (Nuclear magnetic resonance) and FTIR (Fourier Transform Infrared spectroscopy). MALDI-TOF (Matrix-Assisted Laser Desorption/Ionisation-time-of-flight mass spectrometry) is used to establish the molecular weight of HACTP which is 471 g/mol. DSC (Differential Scanning Calorimetery) and TGA (Thermogravimetric Analysis) show that HACTP is a crystalline product with a melting point of 88 °C. It is reactive after melting but is degraded from 230 °C. Copyright © 2016 BCREC GROUP. All rights reserved</p><p><em>Received: 28<sup>th</sup> September 2015; Revised: 5<sup>th</sup> December 2015; Accepted: 4<sup>th</sup> January 2016</em></p><p><strong>How to Cite</strong>: Medjdoub, L., Mohammed, B. (2016). New Method for Nucleophilic Substitution on Hexachlorocyclotriphosphazene by Allylamine Using an Algerian Proton Exchanged Montmorillonite Clay (Maghnite-H+) as a Green Solid Catalyst. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 11 (2): 151-160 (doi:10.9767/bcrec.11.2.541.151-160)</p><p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.11.2.541.151-160</p>

One-pot synthesis of chitosan–dehydropregnenolone acetate ketimine nanoparticles and their antifungal bioevaluation

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 10065-10071 ◽  
Author(s):  
Archana M. Das ◽  
Raju Khan ◽  
Manash P. Hazarika ◽  
Debjani Baruah ◽  
Purnajyoti D. Bhuyan
Keyword(s):  
Room Temperature ◽  
Polymeric Nanoparticles ◽  
Communicable Diseases ◽  
New Method ◽  
One Pot ◽  
One Pot Synthesis ◽  
Dehydropregnenolone Acetate

This paper presents a new method for fabricating biodegradable bio-polymeric nanoparticles via a convenient one-pot strategy at room temperature under stirring conditions for application to communicable diseases.

scholarly journals Gamma-Ray Spectral Unfolding of CdZnTe-Based Detectors Using a Genetic Algorithm

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7316
Author(s):  
Nicola Sarzi Amadè ◽  
Manuele Bettelli ◽  
Nicola Zambelli ◽  
Silvia Zanettini ◽  
Giacomo Benassi ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Room Temperature ◽  
Gamma Ray ◽  
Spectral Shape ◽  
Semiconductor Detectors ◽  
Arduous Task ◽  
Γ Ray ◽  
Spectral Unfolding ◽  
Single Pixel ◽  
True Energy

The analysis of γ-ray spectra can be an arduous task, especially in the case of room temperature semiconductor detectors, where several distortions and instrumental artifacts conceal the true spectral shape. We developed a genetic algorithm to perform the unfolding of γ-spectra in order to restore the true energy distribution of the incoming radiation. We successfully validated our approach on experimental spectra of four radionuclides (241Am, 57Co, 137Cs and 133Ba) acquired with two CdZnTe-based detectors with different contact geometries (single pixel and drift strip). The unfolded spectra consist of δ-like peaks in correspondence with the radiation emissions of each radioisotope.

New approach to the use of 2-bromoethyl esters in peptide synthesis

1988 ◽  
Vol 53 (11) ◽  
pp. 2787-2790 ◽  
Author(s):  
M. Joaquina S. A. Amaral Trigo ◽  
M. Isabel A. Oliveira Santos
Keyword(s):  
Peptide Synthesis ◽  
Room Temperature ◽  
New Method ◽  
New Approach

The synthesis of six new fully protected dipeptides 2-bromoethyl esters and a new method for the removal of the C-protection by the action of the sulphide anion, at room temperature, are described.

Photocrosslinking of EPDM Elastomers. A New Method for Rapid Curing of Elastomer Coatings at Room Temperature

1988 ◽  
Vol 61 (4) ◽  
pp. 568-576 ◽  
Author(s):  
J. Hilborn ◽  
B. Rånby
Keyword(s):  
Room Temperature ◽  
Uv Light ◽  
Steel Substrate ◽  
New Method ◽  
Practical Applications ◽  
Optimum Formulation ◽  
Thick Layers

Abstract Photocrosslinking with UV light in air of silica-filled EPDM rubbers is possible in practical applications for at least 2 mm thick layers which are cemented onto a steel substrate. To find the optimum formulation of the rubber composition, it is essential to know the function of each component. Further optimization can be achieved by using the APOE to the TMPTA system and by using a suitable primer cement on the metal.

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