检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

矿物的定义

矿物学报 1995年第3期15卷 365-366页

作者： e.h.nickel 曾亚文国际矿物学协会新矿物及矿物命名委员会

在线全文

学校读者我要写书评

暂无评论

矿物固溶体的命名

岩石矿物学杂志 1992年第3期11卷 283-286页

作者： e.h.nickel 曹亚文国际新矿物及矿物命名委员会

0 概述国际矿物学会(IMA)新矿物及矿物命名委员会(CNMMN)推荐的矿物命名准则已由nickel和Mandarino(1987—1989)总结并在大多数国际矿物学期刊上发表。但上述准则并未包括矿物命名中应如何命名固溶体系列中的矿物成员这一问题。

关键词：矿物固溶体命名

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)多型后缀规范

在线全文

学校读者我要写书评

暂无评论

岩石矿物学杂志 1993年第4期 382-383页

作者： e.h.nickel 曹亚文 IMA CNMMN 新矿物及矿物命名专业委员会副主席

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)已经出版了关于矿物命名的若干准则,其中包括对矿物多型的命名法(如:nickel和Mandarino,1987)。从根本上说,多型名称是由在根矿物名(root name)后附加数字和字母,并将数字和字母用连字... 详细信息

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)已经出版了关于矿物命名的若干准则,其中包括对矿物多型的命名法(如:nickel和Mandarino,1987)。从根本上说,多型名称是由在根矿物名(root name)后附加数字和字母,并将数字和字母用连字符(一)与根矿物名连接起来而形成。附加的数字部分代表层的周期(layering periodicity);

关键词：矿物学硅灰石矽灰石链状硅酸盐矿物 IMA CNMMN 多型委员会

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)多型后缀规范化

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

矿物岩石地球化学通报 1993年第3期12卷 170-172页

作者： e.h.nickel 曹亚文 IMA CNMMN 新矿物及矿物命名专业委员会

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)已经出版了关于矿物命名的若干准则,其中包括对矿物多型的命名法(如nickel和Mandarino,1987)。从根本上说,多型名称是由在矿物名(root name)后附加数字和字母,并将数字和字母用连字符(-... 详细信息

国际矿物学协会新矿物及矿物命名委员会(IMA CNMMN)已经出版了关于矿物命名的若干准则,其中包括对矿物多型的命名法(如nickel和Mandarino,1987)。从根本上说,多型名称是由在矿物名(root name)后附加数字和字母,并将数字和字母用连字符(-)与根矿物名连接起来而形成。附加的数字部分代表层的周期(layering periodicity);而字母部分以斜体书写,代表晶系。举例来说,Wurtzite-4h(纤锌矿-4h)是具有4倍于纤锌矿母体(wurtzite parent)c轴长度的同期之六方纤锌矿多型。

关键词：纤锌矿新矿物 IMA CNMMN 数字部分命名法 periodicity parent 轴长连字符晶系

南澳大利亚阿卡鲁拉区的一种独特的黄铁矿-自然硫-黄钾铁矾组合

在线全文

学校读者我要写书评

暂无评论

地球与环境 1986年第3期 19-19页

作者： e.h.nickel 邓志成中南工业大学

最近,在南澳大利亚发现了黄铁矿、自然硫和黄钾铁矾[KFe;（SO;）;（Oh）;]相互共生的现象。虽然黄钾铁矾是黄铁矿的常见蚀变产物,但对于自然硫与黄铁矿和黄钾铁矾共生现象的报道,显然还是第一次。这种矿物共生现象是在称之为伍德纳摩卡... 详细信息

最近,在南澳大利亚发现了黄铁矿、自然硫和黄钾铁矾[KFe;（SO;）;（Oh）;]相互共生的现象。虽然黄钾铁矾是黄铁矿的常见蚀变产物,但对于自然硫与黄铁矿和黄钾铁矾共生现象的报道,显然还是第一次。这种矿物共生现象是在称之为伍德纳摩卡千枚岩的变质建造中发现的,该建造位于南澳

关键词：黄钾铁矾钾矿物黄铁矿铁矿物自然硫硫矿物

Free vibration and transient response of double curved beams connected by intermediate straight beams

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(english edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-TALOOKOLAeI h.GhANDVAR e.JUMAeV S.KhATIR T.CUONG-Le School of Mechanical engineering Babol Noshirvani University of Technology Department of Mechanical engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for engineering Application and Technology Solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

关键词： Kinetic energy

Neuroinflammation as a therapeutic target in huntington's disease

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 817-818页

作者： Andrea Kwakowsky Thulani h.Palpagama Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George huntington presented his essay “On Chorea” to the Meigs and Mason Academy of Medicine and, in doing so, detailed a disease that would later bear his name. huntington's disease(hD) is a genetic, neurodegenerative disease that manifests as the loss of motor control,cognitive impairment,and mood and psychiatric changes in paents.

关键词： huntington inflammation Medicine

Glial response in the midcingulate cortex in huntington’s disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 207-208页

作者： Thulani h.Palpagama Andrea Kwakowsky Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CenterUniversity of GalwayGalwayIreland

huntington’s disease(hD)is a genetic disease characterized by the progressive degeneration of the striatum and *** can present with a variety of symptoms that can broadly be classified into motor symptoms,inclusive of choreatic movements and rigidity,mood and psychiatric symptoms,such as depression and apathy,and cognitive symptoms,such as cognitive *** causal mutation underlying hD results from an expansion of a CAG repeat sequence on the IT15 gene,resulting in the formation and accumulation of a mutant huntingtin protein.

关键词： huntington degeneration cortex

Comparative chemical sensor for detection of chromium(Ⅵ) in aqueous solution

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2025年第1期21卷 21-27页

作者： Sura h.AL-ReKABI A.A.ALWAhIB electrical Technique Department Al Suwayrah Technical Institute Middle Technical University Laser and Optoelectronics Department University of Technology-Iraq

A process for purifying aqueous solutions containing heavy and toxic metals such as chromium（Cr） has been investigated. One of the extremely harmful pollutants in rivers and seawater is the heavy metal ions due to their direct impacts on human, animals and plants are hexavalent Cr（Ⅵ）. Consequently, highly sensitive sensor to detect Cr is essential. Surface plasmon resonance（SPR） technique has attracted huge research interest in detecting heavy metals specifically. In this study, three types of prism-based SPR sensor, gold（Au）/silver（Ag）, Au/polyaniline（PANI） and Au/titanium dioxide（TiO2） nanostructured films, are investigated as potential sensing material to detect the presence of Cr（Ⅵ） ions in water. The base Au layer with thickness of 48.3 nm is deposited on a glass slide for all sensors. For Au/Ag, Au/PANI nanofibers and Au/TiO2sensor films, the Cr（Ⅵ） concentration is varied from 1 ppm to 15 ppm with sensitivity of 0.270 °ppm-1, 0.082 °ppm-1and 0.039 °ppm-1, respectively. Based on these results, the Au/PANI nanofibers are the most sensitive to Cr（Ⅵ） among the tested sensing materials.

关键词： Titanium dioxide