Recent Progress in The CdTe γ-Rays Detector Simulation

1993 ◽  
Vol 302 ◽  
Author(s):  
C. Manfredotti ◽  
F. Fizzotti ◽  
C. Ongaro ◽  
E. Vittone ◽  
U. Nastasi
Keyword(s):  
Recent Progress ◽  
Spectral Response ◽  
Monte Carlo Program ◽  
Experimental Conditions ◽  
Detailed Understanding ◽  
Practical Applications ◽  
Electronic Parameters ◽  
Γ Rays ◽  
Set Up ◽  
Detector Simulation

ABSTRACTRecently, we reported a simulation of spectroscopic performances of CdTe detectors by a Monte Carlo program ‘ISIDE’. The program was demonstrated to be extremely useful both for an exact simulation of the spectral response of CdTe to γy-rays and for a detailed understanding of the effect of physical and electronic parameters on the experimental performances. In the present work, the attention is focused on the various aspects of CdTe response to 57Co γ-rays, in an energy interval which is extremely interesting for practical applications of CdTe spectroscopy. Spectra are presented for different experimental conditions, particularly as far as electronics set up is concerned, in correlation with the relevant rise time distributions and with spatial distribution of interaction points in the detector. It is proved that in order to account for the rise times distributions as compared with the experimental ones, one must assume the presence of a dead region on the front of the detector. Moreover, a clear indication of what is needed in order to reach the best energy resolution in realistic conditions is given.

Electrocatalysis of formic acid on palladium and platinum surfaces: from fundamental mechanisms to fuel cell applications

2014 ◽  
Vol 16 (38) ◽  
pp. 20360-20376 ◽  
Author(s):  
Kun Jiang ◽  
Han-Xuan Zhang ◽  
Shouzhong Zou ◽  
Wen-Bin Cai
Keyword(s):  
Fuel Cell ◽  
Formic Acid ◽  
Recent Progress ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Mechanistic Studies ◽  
Practical Applications ◽  
Platinum Surfaces ◽  
Formic Acid Fuel Cells ◽  
Oxidation Synthesis

A brief overview is presented on recent progress in mechanistic studies of formic acid oxidation, synthesis of novel Pd- and Pt-based nanocatalysts and their practical applications in direct formic acid fuel cells.

Antibiotic treatment of the breadcrumb sponge Halichondria panicea and subsequent recolonization v1

2021 ◽  
Author(s):  
Lara Schmittmann ◽  
Ute U Hentschel
Keyword(s):  
Antibiotic Treatment ◽  
Recovery Phase ◽  
Phase 3 ◽  
Experimental Conditions ◽  
Host Environment ◽  
Halichondria Panicea ◽  
Set Up ◽  
Bacterial Recolonization ◽  
Sponge Halichondria Panicea

This protocol generates sponges (Halichondria panicea) with a disturbed microbiome under controlled experimental conditions, in order to study bacterial recolonization dynamics. Bacteria-bacteria interactions can be analysed with this set-up within the host environment aiming at a better understanding of sponge-microbe symbiosis in vivo. It is divided into the sections 1) preparation, 2) antibiotic treatment and recovery phase, 3) recolonization with the natural microbiome and 4) sampling.

Recent progress in quantum dot-sensitized solar cells employing metal chalcogenides

2019 ◽  
Vol 7 (46) ◽  
pp. 26205-26226 ◽  
Author(s):  
Donghao Wang ◽  
Feifei Yin ◽  
Zhonglin Du ◽  
Dongni Han ◽  
Jianguo Tang
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Recent Progress ◽  
Vital Role ◽  
Metal Chalcogenides ◽  
Counter Electrodes ◽  
Metal Chalcogenide ◽  
Interface Modification ◽  
Practical Applications ◽  
Sensitized Solar Cells

Metal chalcogenides play a vital role in the development of QDSCs. Here, we review recent progress on metal chalcogenide-based QDSCs in practical applications based on QD sensitizers, counter electrodes, and interface modification layers.

scholarly journals Advances in Halloysite Nanotubes–Polysaccharide Nanocomposite Preparation and Applications

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 987 ◽  
Author(s):  
Yang Wu ◽  
Yongzhi Zhang ◽  
Junping Ju ◽  
Hao Yan ◽  
Xiaoyu Huang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Aspect Ratio ◽  
Mechanical Strength ◽  
Recent Progress ◽  
Halloysite Nanotubes ◽  
Large Aspect Ratio ◽  
Swelling Properties ◽  
High Mechanical Strength ◽  
Practical Applications ◽  
Treatment Application

Halloysite nanotubes (HNTs), novel 1D natural materials with a unique tubular nanostructure, large aspect ratio, biocompatibility, and high mechanical strength, are promising nanofillers to improve the properties of polymers. In this review, we summarize the recent progress toward the development of polysaccharide-HNTs composites, paying attention to the main existence forms and wastewater treatment application particularly. The purification of HNTs and fabrication of the composites are discussed first. Polysaccharides, such as alginate, chitosan, starch, and cellulose, reinforced with HNTs show improved mechanical, thermal, and swelling properties. Finally, we summarize the unique characteristics of polysaccharide-HNTs composites and review the recent development of the practical applications.

scholarly journals Phosphorothioate modified oligonucleotide–protein interactions

2020 ◽  
Vol 48 (10) ◽  
pp. 5235-5253 ◽  
Author(s):  
Stanley T Crooke ◽  
Timothy A Vickers ◽  
Xue-hai Liang
Keyword(s):  
Protein Interactions ◽  
Antisense Oligonucleotides ◽  
Intracellular Trafficking ◽  
Recent Progress ◽  
Therapeutic Index ◽  
Pharmacological Properties ◽  
Detailed Understanding ◽  
Chemically Modified ◽  
Structure Activity ◽  
Modified Oligonucleotide

Abstract Antisense oligonucleotides (ASOs) interact with target RNAs via hybridization to modulate gene expression through different mechanisms. ASO therapeutics are chemically modified and include phosphorothioate (PS) backbone modifications and different ribose and base modifications to improve pharmacological properties. Modified PS ASOs display better binding affinity to the target RNAs and increased binding to proteins. Moreover, PS ASO protein interactions can affect many aspects of their performance, including distribution and tissue delivery, cellular uptake, intracellular trafficking, potency and toxicity. In this review, we summarize recent progress in understanding PS ASO protein interactions, highlighting the proteins with which PS ASOs interact, the influence of PS ASO protein interactions on ASO performance, and the structure activity relationships of PS ASO modification and protein interactions. A detailed understanding of these interactions can aid in the design of safer and more potent ASO drugs, as illustrated by recent findings that altering ASO chemical modifications dramatically improves therapeutic index.

scholarly journals A Simplified Finite Element Approach for Modeling of Multilayer Plates

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Taiyou Liu ◽  
Xinbo Ma ◽  
Pak Kin Wong ◽  
Jing Zhao ◽  
Zhengchao Xie ◽  
...  
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Reference Value ◽  
Fe Model ◽  
Practical Applications ◽  
Aerospace Applications ◽  
Equivalent Bending Stiffness ◽  
Element Approach ◽  
Set Up ◽  
Transverse Response

The multilayer plate has a great potential for automotive and aerospace applications. However, the complexity in structure and calculation of the response impede the practical applications of multilayer plates. To solve this problem, this work proposes a new plate finite element and a simplified finite element (FE) model for multilayer plates. The proposed new plate finite element consists of the shear and extension strains in all layers. The multilayer structure with the proposed new plate finite element is regarded as a reference to calculate the reference value of the transverse response. The simplified FE model of multilayer plates is proposed based on the equivalent bending stiffness by curve fitting of the reference value of the transverse response. Numerical study shows that this approach can be used to set up the simplified FE model of multilayer plates.

scholarly journals UHPLC-UV/Vis Quantitative Analysis of Hydroxylated and O-prenylated Coumarins in Pomegranate Seed Extracts

Molecules ◽  
2019 ◽  
Vol 24 (10) ◽  
pp. 1963 ◽  
Author(s):  
Serena Fiorito ◽  
Federica Ianni ◽  
Francesca Preziuso ◽  
Francesco Epifano ◽  
Luca Scotti ◽  
...  
Keyword(s):  
Punica Granatum ◽  
Biologically Active ◽  
Experimental Conditions ◽  
Analytical Methodology ◽  
Extraction Solvent ◽  
Versatile Technique ◽  
Efficient Extraction ◽  
Pomegranate Seed ◽  
Set Up ◽  
Seed Extracts

A simple and rapid analytical UHPLC methodology with spectrophotometric (UV/Vis) detection, coupled with different extraction procedures, has been perfected to investigate the presence of biologically active O-prenylated umbelliferone derivatives, such as auraptene and umbelliprenin, in pomegranate (Punica granatum L.) seed extracts. Absolute ethanol was the most efficient extraction solvent in terms of yields, after a short ultrasound-assisted. The highest concentration values recorded under these experimental conditions were 1.99 μg/g of dry extract and 6.53 μg/g for auraptene and umbelliprenin, respectively. The parent metabolite umbelliferone was also detected (0.67 μg/g). The extraction and UHPLC analytical methodology set up in the present study proved to be an efficient, powerful, and versatile technique for the simultaneous qualitative analysis and quantification of oxyprenylated coumarins in pomegranate seed extracts. The characterization of such secondary metabolites in the mentioned phytopreparation represents, to the best of our knowledge, the first example in the literature.

scholarly journals Recent Progress in Thermoelectric Materials Based on Conjugated Polymers

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 107 ◽  
Author(s):  
Chang-Jiang Yao ◽  
Hao-Li Zhang ◽  
Qichun Zhang
Keyword(s):  
Thermal Conductivity ◽  
Energy Harvesting ◽  
Conjugated Polymers ◽  
Recent Progress ◽  
Inorganic Compounds ◽  
Lead Telluride ◽  
Practical Applications ◽  
Tin Selenide ◽  
Properties Of Materials ◽  
High Flexibility

Organic thermoelectric (TE) materials can directly convert heat to electricity, and they are emerging as new materials for energy harvesting and cooling technologies. The performance of TE materials mainly depends on the properties of materials, including the Seebeck coefficient, electrical conductivity, thermal conductivity, and thermal stability. Traditional TE materials are mostly based on low-bandgap inorganic compounds, such as bismuth chalcogenide, lead telluride, and tin selenide, while organic materials as promising TE materials are attracting more and more attention because of their intrinsic advantages, including cost-effectiveness, easy processing, low density, low thermal conductivity, and high flexibility. However, to meet the requirements of practical applications, the performance of organic TE materials needs much improvement. A variety of efforts have been made to enhance the performance of organic TE materials, including the modification of molecular structure, and chemical or electrochemical doping. In this review, we summarize recent progress in organic TE materials, and discuss the feasible strategies for enhancing the properties of organic TE materials for future energy-harvesting applications.

Carbon materials for high mass-loading supercapacitors: filling the gap between new materials and practical applications

2020 ◽  
Vol 8 (42) ◽  
pp. 21930-21946 ◽  
Author(s):  
Yue Dong ◽  
Jiayao Zhu ◽  
Qiqi Li ◽  
Su Zhang ◽  
Huaihe Song ◽  
...  
Keyword(s):  
Recent Progress ◽  
Carbon Materials ◽  
High Mass ◽  
Mass Loading ◽  
New Materials ◽  
Practical Applications

The recent progress on designing novel carbons and the newly developed theories for high mass-loading supercapacitors have been summarized.

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