نتایج جستجو برای: isothermal calorimeter
تعداد نتایج: 17839 فیلتر نتایج به سال:
The Oxygen Induction Time (OIT) test is an accelerated aging test that is often used to predict the long term stability of hydrocarbon materials including plastics, rubbers, and adhesives. The OIT test can also be used to measure the level of effective antioxidant present or remaining in a polymeric material after some environmental exposure. Since thermal-oxidatative degradation requires the p...
Amyloid fibril deposition is associated with over 20 degenerative diseases, including Alzheimer's, Parkinson's, and prion diseases. Although research over the last few years has revealed the morphology and structural features of the amyloid form, knowledge about the thermodynamics of amyloid formation is limited. Here, we report for the first time a direct thermodynamic study of amyloid formati...
OBJECTIVE To analyze a new endodontic sealer material commercially known as Resilon and to describe in detail the experimental techniques employed that lead to the identification of the composite material. METHODS An extensive structural, thermal, and physical characterization was used to identify a new endodontic sealer material using the following techniques: Fourier transform infrared (FTI...
The calorimeter electronics of the NEMO-3 double beta decay experiment fulfills three functions: energy measurement of the electrons by measuring the charge of the pulses, time measurement, fast first level triggering. The electronics of the 1940 Scintillator-PM modules is implemented as 40 "9U x 400mm VME" boards of up to 51 channels. For each channel the analog signals conditioning is impleme...
From 2007 the new CERN proton proton collider will start collisions that could open new perspectives in the fields of high energy particle physics. The CMS experiment at the LHC is in advanced construction phase. In particular new physics could be discovered thanks to the CMS precise electromagnetic calorimeter (ECAL) made of about 75000 scintillating PbWO 4 crystals. A description of the ECAL ...
For several years, CALICE has been testing highly granular calorimeter prototypes using analogue readout. These devices are envisaged for particle flow [1] application in a future linear collider detector. A novel alternative, especially interesting for the hadron calorimeter, is to use a simplified digital (= 1 – bit) readout coupled with very small cell sizes. In the past year the first large...
The E877 experimental setup is discussed in detail elsewhere [1–4]. In the current analysis, for the reaction plane determination and the evaluation of the reaction plane resolution, we exploit the almost 4π calorimeter coverage of the apparatus (the Target Calorimeter (TCal) covers the pseudorapidity range −0.5 < η < 0.8, the Participant Calorimeter (PCal) 0.8 < η < 4.2). Charged particles, em...
The ZEUS detector at HERA has been supplemented with a presampler detector in front of the forward and rear calorimeters. It consists of a segmented scintillator array read out with wavelength-shifting fibers. We discuss its design, construction and performance. Test beam data obtained with a prototype presampler and the ZEUS prototype calorimeter demonstrate the main function of this detector,...
A Semi-Digital Hadronic Calorimeter using Glass Resistive Plate Chambers (GRPCs) is one of the calorimeters candidates proposed for particle physics experiments at the future electrons collider. It is a high granular calorimeter which is required for application of the particle flow algorithm in order to improve the jet energy resolution to achieve 30%= ffiffiffi E p as one of the goals of thes...
An improved calibration technique based on a radio-frequency-quadrupole (RFQ) accelerator is presented. A high-intensity flux of 17.6 MeV photons, produced by radiative capture of 1.85 MeV protons from the RFQ in a lithium target, is used to calibrate 11000 crystals of the L3 BGO calorimeter. In this paper, we present results obtained for the calibration of 1997 and 1998 L3 data samples. For th...
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