Materials Literature
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Artificial neural networks are computing systems that simulate the biological neural systems of human brain. ANNs are structures deliberately designed to mimic and utilize the organizational principles observed in the human brain. Although three dimensional nonlinear dynamic analyses of RC buildings provide valuable i…
ABSTRACT In this paper, we present an experimental protocol for following the kinetics of phase‐transfer catalyzed synthesis of butyl 2‐(4‐methoxyphenyl) acetate from the esterification of 4‐methoxyphenylacetic acid with the presence of potassium hydroxide as a base and potassium carbonate by gas chromatography. Hydro…
[ES] Se estudia la composición mineralógica de distintas fracciones de tres perfiles desarrollados sobre formaciones de raña en Robledo de Corpes. Los minerales predominantes son filosilicatos, cuarzo, goetita, colinita e ilita.
采用SEM和XRD等分析手段对NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho定向共晶合金的高温氧化行为进行研究。结果表明,在900~1100°C下合金表面生成连续的Al2O3氧化膜,从而使合金具有良好的抗氧化性能;在1150°C下合金表面的Al2O3氧化膜破裂,氧化增重升高。定向凝固工艺细化合金的组织以及微量稀土元素Ho的加入,均有利于在合金表面形成连续的Al2O3氧化膜。在氧化过程中,表面氧化膜存在着θ-Al2O3→α-Al2O3的相变过程,从而导致1000°C和1050°C氧化增重反常现象的出现。
Prior to this investigation, the only known soluble homoleptic transition metal hydrides consisted of rhenium (K 2 ReH 9 ) and complexes of the form [MH 6 ] 4- (where M = iron and ruthenium). Using the procedure developed in 2002 by Donald E. Linn, Jr., Gabriel M. Skidd, and Stacci N. McVay to produce soluble iron hyd…
Purpose of writing this review on microspheres was to compile the recent literature with special focus on the various variables which affect the drug release pattern of microspheres. There are various approaches in delivering a therapeutic substance to the target site in a controlled release fashion. One such approach…
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
The Advanced High-Temperature Reactor (AHTR) is a design concept for a central station-type [1500 MW(e)] Fluoride salt–cooled High-temperature Reactor (FHR) that is currently undergoing development by Oak Ridge National Laboratory for the US. Department of Energy, Office of Nuclear Energy’s Advanced Reactor Concepts p…
It is said that in 1637, the Jesuit Athanasius Kircher asked to be taken into the crater of Mount Vesuvius in order to take a closer look at the volcano about to erupt. In his book of 1665, Mundus subterraneus , Kircher presents a comprehensive inventory of the geological knowledge of his age, interweaving considerati…
In past years, the authors have undertaken various studies of nozzles in both boiling water reactors (BWRs) and pressurized water reactors (PWRs) located in the reactor pressure vessel (RPV) adjacent to the core beltline region. Those studies described stress and fracture mechanics analyses performed to assess various…
Abstract The article contains sections titled: 1. Introduction 1.1. Hardness Measurement (Overview) 1.2. Classification of Hard Materials 1.2.1. Occurrence 1.2.2. Appearance 1.2.3. Electrical Conductivity 1.2.4. Composition and Thermal Stability in Air 2. Nonmetallic Hard Materials 2.1. Diamond 2.2. Cubic Boron Nitrid…
MM-398 is a stable nanotherapeutic encapsulation of the prodrug irinotecan (CPT-11) with longer plasma half-life and higher tumor deposition due to an enhanced permeability and retention effect. Pancreatic cancer has responded poorly to many therapeutics, largely because of inadequate drug penetration due to poor vasc…
Abstract The article contains sections titled: 1. Introduction 2. Classification of Metallic Glasses 3. The Concepts of Glass Formation 4. Glass‐Forming Ability 4.1. Critical Cooling Rate 4.2. Reduced Glass Transition Temperature 4.3. Deep Eutectics 4.4. Topological Models 4.5. Inoue Criteria 4.6. New Criteria 5. Synt…
Significance and Use 5.1 This test method is designed to produce shear property data for material specifications, research and development, quality assurance, and structural design and analysis. Either in-plane or interlaminar shear properties may be eva
Abstract The article contains sections titled: 1. Fixed‐Bed Reactors with Gas‐Phase Reactions 1.1. Introduction 1.2. Catalyst Forms for Fixed‐Bed Reactors 1.2.1. Fluid Flow, Mass and Heat Transfer, and Chemical Reaction in Catalyst‐Filled Tubes 1.2.2. Regular Catalyst Structures 1.2.3. Comparison and Evaluation of Dif…
Porphyrins, phthalocyanines and their derivatives are important in chemistry, materials science, physics, biology and medicine. This series details the synthesis, chemistry, physicochemical and medical properties and applications of polypyrrole macrocycles.
During the refueling and maintenance outage in August 2011 at Leibstadt Nuclear Power Plant in Switzerland, the inspection of the hydrostatic bearings of the two identical recirculation pumps revealed a deep circumferential erosion groove on the inside surface of each of the bearing journals. The bearing journals are…
The conservatism of the austenitic stainless steel fatigue design curve has been severely questioned since the release of the NUREG/CR-6909 document [1] where a new methodology to assess environmentally assisted fatigue (EAF), including also a new in-air fatigue design curve, have been proposed. In the same way, the A…
In 2012, AFCEN (Association Française pour les règles de Conception et de Construction des Matériels des Chaudières Electro-nucléaires) will publish the fifth edition of the RCC-MR code, named RCC-MRx 2012. This RCC-MRx Code is the result of the merger of the RCC-MX 2008 developed in the context of the research reacto…
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