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Novel diamond shuttle to deliver flexible neural probe with reduced tissue compression

microsystems & Nanoengineering 2020年第1期6卷 903-915页

作者： Kyounghwan Na Zachariah J.Sperry Jiaao Lu mihaly Voroslakos Saman S.Parizi Tim m.Bruns Euisik Yoon John P.Seymour Electrical Engineering&Computer Science Department University of MichiganAnn ArborMI 48105USA Biomedical Engineering Department University of MichiganAnn ArborMI 48105USA Biointerfaces Institute University of MichiganAnn ArborMI 48105USA The Neuroscience Institute New York UniversityNew YorkNY 10016USA Center for Nanomedicine Institute for Basic Science(IBS)Seoul 03722Korea Graduate Program of Nano Biomedical Engineering(Nano BmE) Yonsei-IBS InstituteYonsei UniversitySeoul 03722Korea Vivian L Smith Department of Neurosurgery University of Texas Health Science CenterHoustonTX 77030USA Department of Electrical and Computer Engineering Rice UniversityHoustonTX 77005USA

The ability to deliver flexible biosensors through the toughest membranes of the central and peripheral nervous system is an important challenge in neuroscience and neural *** devices implanted through dura mater and thick epineurium would ideally create minimal compression and acute damage as they reach the neurons of *** demonstrate that a three-dimensional diamond shuttle can be easily made with a vertical support to deliver ultra-compliant polymer microelectrodes(4.5-µm thick)through dura mater and thick *** diamond shuttle has 54%less cross-sectional area than an equivalently stiff silicon shuttle,which we simulated will result in a 37%reduction in blood vessel *** also discovered that higher frequency oscillation of the shuttle(200Hz)significantly reduced tissue compression regardless of the insertion speed,while slow speeds also independently reduced tissue *** and recording performance are demonstrated in rat and feline models,but the large design space of these tools are suitable for research in a variety of animal models and nervous system targets.

关键词： sectional neural thick

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壁处与龈壁处的微渗漏的比较——湿润粘接技术修复V类洞洞型

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口腔医学 1999年第2期19卷 65-66页

作者：傅柏平 Hannig,m 浙江医科大学附属第一医院口腔科

目的：实验研究湿润粘接技术修复Ｖ类洞洞型时，壁处与龈壁处的微渗漏的比较．方法：４８颗人离体磨牙根据颊、近中和远中面分别分成Ａ、Ｂ、Ｃ三组，每组又随机分成４小组（ｎ＝１２），洞型位于釉牙本质交界处．Ａ１和Ａ２组常规制... 详细信息

目的：实验研究湿润粘接技术修复Ｖ类洞洞型时，壁处与龈壁处的微渗漏的比较．方法：４８颗人离体磨牙根据颊、近中和远中面分别分成Ａ、Ｂ、Ｃ三组，每组又随机分成４小组（ｎ＝１２），洞型位于釉牙本质交界处．Ａ１和Ａ２组常规制备Ｖ类洞洞型；但Ａ２制备洞缘斜面；Ａ３、Ａ４用空气喷磨技术制备Ｖ类洞洞型，但分别使用方法５０μｍ和２７μｍ氧化铝微粒．Ｂ、Ｃ各小组处理与相应Ａ组相同．所有牙齿用０．５％亚甲基蓝着色．结果：所有标本在龈壁处存在严重的微渗漏（ｐ＜０．００１）．

关键词： V类洞湿润粘接剂微渗漏 He壁

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亚稳定型合金（GaAs）1-x（Ge2）x带间跃迁能量E1的椭圆偏振谱研究

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红外与毫米波学报 1987年第6期6卷 419-424页

作者：薛大中,Paul m.Raccah,L.L.Abels 天津市技术物理研究所 Physics Department University of Illinois at Chicago U.S.A. Physics Department University of Illinois at Chicago U.S.A.

用自动椭圆偏振谱方法研究亚稳定型合金（GaAs）1-x（Ge2）x带间跃迁能量E1的曲线特征,得到E1的线性特征与E0完全一样,呈现非抛物线特征。我们认为这是由于Ge与Ga和As原子相互作用造成Ge电荷分布的变化引起的,这一结论对闪锌矿结构和金... 详细信息

用自动椭圆偏振谱方法研究亚稳定型合金（GaAs）1-x（Ge2）x带间跃迁能量E1的曲线特征,得到E1的线性特征与E0完全一样,呈现非抛物线特征。我们认为这是由于Ge与Ga和As原子相互作用造成Ge电荷分布的变化引起的,这一结论对闪锌矿结构和金刚石结构都是正确的。

关键词：带间跃迁组份 E1 Ge2 GaAs 椭圆偏振

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Tribological Characteristics of DLC Coatings in Vacuum under Sliding Contact

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Journal of Surface Engineered materials and Advanced Technology 2012年第1期2卷 22-27页

作者： m. Ananth Kumar masahiro Fujii Takuya Fukuda 不详

diamond-like Carbon (DLC) coatings of thickness 3 μm and 10 μm were deposited with and without radical nitriding on stainless steel disk and ring specimens. Plasma CVD method was used to deposit the DLC coatings with silicon as dopant. The specimens were tested in vacuum under sliding contact condition to evaluate the tribological characteristics with reference to the DLC coating thickness and sliding distance. The results revealed that wear resistance was more for the highest coating thickness. The changes on the worn surfaces were observed and wear mechanism is discussed using ex situ analysis.

关键词： DLC Disk Ring Coating Thickness

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Phlogopite in mantle xenoliths and kimberlite from the Grib pipe,Arkhangelsk province,Russia:Evidence for multi-stage mantle metasomatism and origin of phlogopite in kimberlite

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Geoscience Frontiers 2019年第5期10卷 1941-1959页

作者： A.V. Kargin L.V. Sazonova A.A. Nosova N.m. Lebedeva Yu.A. Kostitsyn E.V. Kovalchuk V.V. Tretyachenko Ya.S. Tikhomirova Institute of Geology of Ore Deposits PetrographyMineralogyand GeochemistryRussian Academy of Sciences (IGEM RAS)MoscowRussia Lomonosov moscow State University MoscowRussia Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences MoscowRussia AC ALROSA Research Geological Prospecting Enterprise ArkhangelskRussia

We present petrography and mineral chemistry for both phlogopite,from mantle-derived xenoliths (garnet peridotite,eclogite and clinopyroxene-phlogopite rocks) and for megacryst,macrocryst and groundmass flakes from the Grib kimberlite in the Arkhangelsk diamond province of Russia to provide new insights into multi-stage metasomatism in the subcratonic lithospheric mantle (SCLm) and the origin of phlogopite in *** on the analysed xenoliths,phlogopite is characterized by several *** first generation (Phl1) occurs as coarse,discrete grains within garnet peridotite and eclogite xenoliths and as a rock-forming mineral within clinopyroxene-phlogopite *** second phlogopite generation (Phl2) occurs as rims and outer zones that surround the Phl1 grains and as fine flakes within kimberlite-related veinlets filled with carbonate,serpentine,chlorite and *** garnet peridotite xenoliths,phlogopite occurs as overgrowths surrounding garnet porphyroblasts,within which phlogopite is associated with Cr-spinel and minor *** eclogite xenoliths,phlogopite occasionally associates with carbonate bearing veinlet ***,from the kimberlite,occurs as megacrysts,macrocrysts,microcrysts and fine flakes in the groundmass and matrix of kimberlitic *** phlogopite grains within the kimberlite are characterised by signs of deformation and form partly fragmented grains,which indicates that they are the disintegrated fragments of previously larger ***1,within the garnet peridotite and clinopyroxeneephlogopitexenoliths,is characterised bylow Ti and Cr contents (TiO2mg#=100×mg/(mgtFe)>92) typical of primary peridotite phlogopite in mantle peridotite xenoliths from global kimberlite *** formed during SCLm metasomatism that led to a transformation from garnet peridotite to clinopyroxene-phlogopite rocks and the crystallisation of phlogopite and high-Cr clinopyroxene megacrysts before the

关键词： mantle metasomatism Kimberlite Phlogopite mantle xenoliths megacrysts

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Growth of Nano Crystalline diamond on Silicon Substrate Using Different Etching Gases by HFCVD

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Chinese Journal of Chemical Physics 2010年第6期23卷 689-692,746页

作者： Z.Khalaj m.Ghoranneviss S.Nasirilaheghi Z.Ghorannevisb R.Hatakeyama 伊朗伊斯兰阿萨德大学等离子物理研究中心德黑兰日本东北大学电子工程学系仙台980—8579

We investigate the effects of etching gases on the synthesis of nano crystalline diamonds grown on silicon substrate at the substrate temperature of 550℃ and the reaction pressure of 4 kPa by hot filament chemical vapor deposition method, in which CH4 and H2 act as a source and diluting gases, respectively. N2, H2, and NH3 were used as the etching gases, respectively. Results show that the optimum conditions can be obtained only for the case of H2 gas. The crystal morphology and crystallinity of the samples have been examined by scanning electron microscopy and X-ray diffraction, respectively.

关键词： Nano crystalline diamond Etching gas Hot filament chemical vapor deposition

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Ursodeoxycholic Acid in Treatment of Non-cholestatic Liver Diseases: A Systematic Review

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Journal of Clinical and Translational Hepatology 2016年第3期4卷 192-205页

作者： Jillian Reardon Trana Hussaini majid Alsahafi Vladimir marquez Azalgara Siegfried R.Erb Nilufar Partovi Eric m.Yoshida Faculty of Pharmaceutical Sciences The University of British Columbia Vancouver British Columbia Canada Division of Gastroenterology The University of British Columbia Diamond Health Vancouver British Columbia Canada Pharmaceutical Sciences Clinical Service Unit Vancouver General Hospital Vancouver British Columbia Canada Division of Gastroenterology The University of British Columbia Diamond Health Vancouver British Columbia Canada Faculty of Pharmaceutical Sciences The University of British Columbia Vancouver British Columbia Canada Pharmaceutical Sciences Clinical Service Unit Vancouver General Hospital Vancouver British Columbia Canada

Aims:To systematically evaluate the literature for evidence to support the use of bile acids in non-cholestatic liver ***:Searches were conducted on the databases of medline (1948-march 31,2015),Embase (1980-march 31,2015) and the Cochrane Central Register of Controlled Trials,and on Google and Google Scholar to identify articles describing ursodeoxycholic acid (UDCA) and its derivatives for non-cholestatic hepatic *** of the following search terms were used:ursodeoxycholic acid,ursodiol,bile acids and/or salts,non alcoholic fatty liver,non alcoholic steatohepatitis,fatty liver,alcoholic hepatitis,alcohol,liver disease,autoimmune,autoimmune hepatitis,liver transplant,liver graft,transplant rejection,graft rejection,ischemic reperfusion injury,reperfusion injury,hepatitis B,hepatitis C,viral hepatitis,chronic hepatitis,acute hepatitis,transaminases,alanine transaminase,liver enzymes,aspartate aminotransferase,gamma-glutamyl transferase,gammaglutamyl transpeptidase,bilirubin,alkaline *** search limits were ***,references of the included studies were reviewed to identify additional ***:The literature search yielded articles meeting inclusion criteria for the following indications:non-alcoholic fatty liver disease (n =5);alcoholic liver disease (n =2);autoimmune hepatitis (n =6),liver transplant (n =2) and viral hepatitis (n =9).Bile acid use was associated with improved normalization of liver biochemistry in non-alcoholic fatty liver disease,autoimmune hepatitis and hepatitis B and C *** contrast,liver biochemistry normalization was inconsistent in alcoholic liver disease and liver *** majority of studies reviewed showed that normalization of liver biochemistry did not correlate to improvement in histologic *** the prospective trials reviewed,adverse effects associated with the bile acids were limited to minor gastrointestinal complaints (most often,diarrhea) a

关键词： Non-alcoholic fatty liver disease Alcoholic liver disease Autoimmune hepatitis Liver transplantation Viral hepatitis

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Validation of Numerical modeling for the Prediction of Elastic and Failure Behavior of diamond Powder Filled Woven Composites

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Open Journal of Composite materials 2017年第2期7卷 63-84页

作者： m. Srinivasan P. maettig K. W. Glitza B. Sanny A. Schumacher m. Duhovic Department of Experimental Physics University of Wuppertal Wuppertal Germany Department of mechanical Engineering University of Wuppertal Wuppertal Germany Institute for Composite materials Kaiserslautern Germany

A numerical investigation was carried out to examine the role of micro-sized diamond powder filler on the on-axis tensile stiffness properties of the standard modulus T300 and the high modulus YS90A woven fabric composite plates by progressive damage modeling. Finite element modeling (FEm) results for the T300 composite with and without diamond powder predicted a specific case of fiber failure in all the plies showing the characteristics of brittle failure. Static tensile tests were carried out on the YS90A composite coupons containing no diamond powder (DP) and filled with 6% and 12% volume fractions of DP. A higher content of diamond powder in the coupons led to agglomeration. This induced stress concentrations and subsequently reduced the mechanical properties. FEm was carried out considering specimens with and without an induced stress concentration geometry in the YS90A coupons filled with DP. The results of the on-axis tensile tests indicated a delamination type of failure in both cases with additional fiber fracture in the Open Hole Tensile (OHT) coupons.

关键词： Woven Composite diamond Powder (DP) Finite Element modeling Progressive Failure Analysis

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金刚石加工金属基复合材料部件

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机械工程师 2000年第10期 1-4页

作者： m. W. Cook De Beers 工业金刚石

在轻质、韧性的金属基体中加入硬质、脆性材料而制成的金属基复合材料，具有高比强度。在加工这类材料时，硬质、脆性相容易带来一系列有关表面粗糙度和快速切削磨损的问题。针对这些问题，从聚晶金刚石和金刚石研磨工具两个方面，说... 详细信息

在轻质、韧性的金属基体中加入硬质、脆性材料而制成的金属基复合材料，具有高比强度。在加工这类材料时，硬质、脆性相容易带来一系列有关表面粗糙度和快速切削磨损的问题。针对这些问题，从聚晶金刚石和金刚石研磨工具两个方面，说明了超硬工具如何有效而经济地加工多种金属基复合材料部件。

关键词：金刚石聚晶金刚石金属基复合材料研磨

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Laboratory-Grown diamond:A Gemological Laboratory Perspective

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宝石和宝石学杂志（中英文） 2021年第6期23卷 25-39页

作者： Sally Eaton-magana Troy Ardon Christopher m.Breeding Gemological Institute of America Carlsbad 92008USA

This article provides an overview of the laboratory-grown diamonds seen at GIA over the last 15 *** that time,the diamond industry has witnessed an exponential increase in the quantity and quality of laboratory-grown diamonds and,therefore,these products’ability to be commercialized on a large *** presents a brief summary of the HPHT and CVD growth processes and then explores some of the major trends observed since GIA began providing synthetic diamond grading reports in *** trends include the shift towards larger and colorless *** also shows a shift towards CVD diamonds dominating the supply of laboratory-grown diamonds submitted for grading reports and that the majority of these have been subjected to post-growth HPHT *** addition,we briefly discuss some methods and strategies used for identification such as the distinguishing gemological characteristics and some recent approaches in advanced ***,we present an array of laboratory-grown diamonds that are currently unusual,however,these may become more common in the future.

关键词： HPHT-grown diamond CVD-grown diamond 4Cs,diamond melee fancy colored diamond

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