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Decorating crystalline YFe_(2-x)Al_(x) on the Mg_(60)la_(10)Ni_(20)Cu_(10) amorphous alloy as “hydrogen pump” to realize fast de/hydrogenation

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journal of Materials Science & Technology 2024年第6期173卷 72-79页

作者： l.j.Huang H.Wang l.Z.Ouyang M.Zhu H.j.l.n School of Materials Science and Engineering Key Laboratory of Advanced Energy Storage Materials of Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China

Mg-based amorphous alloys are one of the potential hydrogen storage materials but suffer from sluggish dehydrogenation/hydrogenation(de/hydrogenation)*** this work,as a new strategy,a hydrogen pump is built on the surface of amorphous alloys to solve this *** milling crystalline YFe_(2-x)Al_(x) hydrogen storage alloy with Mg_(60)la_(10)Ni_(20)Cu_(10) amorphous alloy,fine crystalline particles were seeded on amorphous alloy powder to form a“strawberry”*** to the TEM observation,a metallurgical bonding boundary formed between the Mg-based amorphous matrix and the Y-Fe-Al crystalline *** microstructure and de/hydrogenation kinetics investigation,the“hydrogen pump”effect of the seeded crystalline alloy was confirmed,which makes it much easier for the hydrogen to dissociate on and diffuse through the surface of the Mg-based amorphous *** such effect,the H absorption rate of Mg_(60)la_(10)Ni_(20)Cu_(10) amorphous alloy became almost eight times faster and it absorbs ~2.8 wt.% in 1 h at 130℃ under 4.5 MPa-H_(2).Further,fast hydrogenation can even achieve at 70℃ and the low-temperature dehydrogenation kinetics of the amorphous hydride can be also greatly *** present work proves that surface modification is of great importance for obtaining Mg-based amorphous alloy with ideal hydrogen storage performance.

关键词： Hydrogen storage Mg-based amorphous alloy Hydrogen pump Composite structure

Non-polynomial Zig-Zag and ESl shear deformation theory to study advanced composites

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Chinese journal of Aeronautics 2019年第4期32卷 906-920页

作者： j.l.MANTARI I.A.RAMOS j.C.MONGE Faculty of Mechanical Engineering Instituto de investigación en ingeniería naval(IDIIN)National University of Engineering(UNI)Lima 15333Peru Department of Mechanical Engineering University of New Mexico Faculty of Mechanical Engineering Universidad de Ingeniería y Tecnología(UTEC)

The mechanical behavior of advanced composites can be modeled mathematically through unknown variables and Shear Strain Thickness Functions(SSTFs). Such SSTFs can be of polynomial or non-polynomial nature and some parameters of non-polynomial SSTFs can be optimized to get optimal results. In this paper, these parameters are called ‘‘r" and ‘‘s" and they are the argument of the trigonometric SSTFs introduced within the Carrera Unified Formulation(CUF). The Equivalent Single layer(ESl) governing equations are obtained by employing the Principle of Virtual Displacement(PVD) and are solved using Navier method solution. Furthermore, trigonometric expansion with Murakami theory was implemented in order to reproduce the Zig-Zag effects which are important for multilayer structures. Several combinations of optimization parameters are evaluated and selected by different criteria of average error. Results of the present unified trigonometrical theory with CUF bases confirm that it is possible to improve the stress and displacement results through the thickness distribution of models with reduced unknown variables. Since the idea is to find a theory with reduced numbers of unknowns, the present method appears to be an appropriate technique to select a simple model. However these optimization parameters depend on the plate geometry and the order of expansion or unknown variables. So, the topic deserves further research.

关键词： Analytical solution Composite materials CUF ESl Plate Trigonometric functions Zig-Zag effects

In situ lu–Hf phosphate geochronology:Progress towards a new tool for space exploration

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Geoscience Frontiers 2022年第3期13卷 164-167页

作者： Stijn Glorie Thomas Burke Martin Hand Alexander simpson Sarah Gilbert Benjamin Wade Department of Earth Sciences The University of AdelaideSA 5005 AdelaideAustralia Adelade Microscopy The University of AdelaideSA 5005 AdelaideAustralia

Geochronology is fundamental to understanding planetary ***,as space exploration continues to expand,traditional dating methods,involving complex laboratory processes,are generally not realistic for unmanned space ***-style planetary exploration missions require dating methods that can(1)rapidly resolve age information on small samples,(2)be applied to minerals common in mafic rocks,and(3)be based on technologies that could be installed on future rover *** demonstrate the application of rapid in situ microanalytical lu–Hf phosphate geochronology using samples of pallasite meteorites,which are representative examples of the deep interiors of differentiated planetoids that are generally difficult to *** pallasites were dated by laser ablation tandem mass-spectrometry(lA-ICP-MS/MS),demonstrating a rapid novel method for exploring planetary *** formation ages for individual pallasites agree with traditional methods and havelytical space exploration.

关键词： Pallasite meteorites lu-Hf geochronology laser ablation tandem mass-spectrometry Micro-analytical planetary exploration

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经济体制:经济学的分支学科

世界社会科学 1997年第4期 91-92页

作者：Ｊ．Ｌ．萨恩斯·洛萨诺,晓江

经济体制：经济学的分支学科〔西〕Ｊ．Ｌ．萨恩斯·洛萨诺随着时代的发展，经济学理论和分析方法发生了巨大的变化，经济体制成为经济学的新分支学科便是一个例证。有关经济体制的传统划分法已经过时，最新的观点认为，经济体制主要包... 详细信息

经济体制：经济学的分支学科〔西〕Ｊ．Ｌ．萨恩斯·洛萨诺随着时代的发展，经济学理论和分析方法发生了巨大的变化，经济体制成为经济学的新分支学科便是一个例证。有关经济体制的传统划分法已经过时，最新的观点认为，经济体制主要包括有自我决策能力的宏观经济结构和整...

关键词：经济学家分支学科分析方法萨诺分支科学经济体制

Extragalactic dispersion measures of fast radio bursts

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Research in Astronomy and Astrophysics 2015年第10期15卷 1629-1638页

作者： jun Xu j.l.Han National Astronomical Observatories Chinese Academy of Sciences

Fast radio bursts show large dispersion measures, much larger than the Galactic dispersion measure foreground. Therefore, they evidently have an extragalac- tic origin. We investigate possible contributions to the dispersion measure from host galaxies. We simulate the spatial distribution of fast radio bursts and calculate the dis- persion measures along the sightlines from fast radio bursts to the edge of host galaxies by using the scaled NE2001 model for thermal electron density distributions. We find that contributions to the dispersion measure of fast radio bursts from the host galaxy follow a skew Gaussian distribution. The peak and the width at half maximum of the dispersion measure distribution increase with the inclination angle of a spiral galaxy, to large values when the inclination angle is over 70~. The largest dispersion measure produced by an edge-on spiral galaxy can reach a few thousand pc cm-3, while the dispersion measures from dwarf galaxies and elliptical galaxies have a maximum of only a few tens of pc cm-3. Notice, however, that additional dispersion measures of tens to hundreds of pc cm-3 can be produced by high density clumps in host galaxies. Simulations that include dispersion measure contributions from the large Magellanic Cloud and the Andromeda Galaxy are shown as examples to demonstrate how to ex- tract the dispersion measure from the intergalactic medium.

关键词： galaxies: ISM -- radio continuum: ISM -- ISM: general

Altered expression of m^(1)A regulatory genes is associated with oncogenic pathways,overall survival,and infiltration of immune cells in diverse human cancers

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Genes & Diseases 2023年第3期10卷 739-742页

作者： Renhua Song justin j.l.Wong Epigenetics and RNA Biology Program Centenary Institute The University of SydneyCamperdown 2050Australia Faculty of Medicine and Health The University of SydneyCamperdown 2050Australia

Of over 170 types of RNA modifications discovered,N^(6)-methyladenosine(m^(6)A)is the most actively studied.m6A confers oncogenic potential,maintains cancer stem cells,and is associated with cancer-related outcomes.^(... 详细信息

关键词： cancer maintain immune

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细胞外液的化学组成生理和病理

OSCIllATION AND VARIATION OF THE lAGUERRE HEAT AND POISSON SEMIGROUPS AND RIESZ TRANSFORMS

1955年

作者： j.l.甘伯全如瑊李鼎九译

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Acta Mathematica Scientia 2012年第3期32卷 907-928页

作者： j.j.Betancor R.Crescimbeni j.l.Torrea Departamento de An'aisis Matema'ico Universidad de La Laguna38271-La LagunaTenerifeIslas CanariasSpain Departamento de Matema'ica Universidad Nacional del ComahueBuenos Aires 14008300 Neuqu'enArgentina Departamento de Matem'aticas Facultad de CienciasUniversidad Auto'noma de Madrid28049 MadridSpain

In this article, we study lP-boundedness properties of the oscillation and vari- ation operators for the heat and Poissson semigroup and Riesz transforms in the laguerre settings. Also, we characterize Hardy spaces as... 详细信息

关键词： Oscillation variation heat laguerre semigroup Riesz transforms

Imaging of gaucher disease

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World journal of Radiology 2014年第9期6卷 657-668页

作者： William l simpson George Hermann Manisha Balwani Department of Radiology Icahn School of Medicine at Mount Sinai Department of Genetics and Genomic Sciences Icahn School of Medicine at Mount Sinai

Gaucher disease is the prototypical lysosomal storage *** results from the accumulation of undegrad-ed glucosylceramide in the reticuloendothelial system of the bone marrow,spleen and liver due to deficiency of the enzyme *** leads to he-matologic,visceral and skeletal *** up of glucosylceramide in the liver and spleen results in *** normal bone marrow is re-placed by the accumulating substrate leading to many of the hematologic signs including *** visceral and skeletal manifestations can be visualized with vari-ous imaging modalities including radiography,com-puted tomography,magnetic resonance imaging(MRI)and radionuclide *** to the development of enzyme replacement therapy,treatment was only ***,once intravenous enzyme replace-ment therapy became available in the 1990s it quickly became the standard of *** replacement therapy leads to improvement in all *** and hematologic manifestations respond more quickly usually within a few months or *** skel-etal manifestations take much longer,usually several years,to show *** recent years newer treatment strategies,such as substrate reduction thera-py,have been under *** plays a key role in both initial diagnosis and routine monitoring of patient on treatment particularly volumetric MRI of the liver and spleen and MRI of the femora for evaluating bone marrow disease burden.

关键词： Gaucher disease lysosomal storage dis-ease Enzyme replacement therapy Genetics Medical imaging Magnetic resonance imaging Bone marrow