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Preparation of Diamond—Like carbon Films in methane by Electron Cyclotron Resonance microwave Plasma Source Ion Implantation

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Chinese Physics Letters 2003年第5期20卷 692-695页

作者： LIXin TANGZhen-An maGuo-ja WUZhi-meng DengXin-Lu DepartmentofElectronicEngineering MicrosystemResearchCenterDalianUniversityofTechnologyDalian116024 StateKeyLaboratoryofmaterialsmodificationbyLaser IonandElectronBeamsDalianUniversityofTechnologyDalian116024

Diamond-like carbon(DLC)films were prepared on Si(100) substrates by ion implantation from an electron cyclotron resonance microwave plasma *** the implantation,650W microwave power was used to produce discharge plasma with methane as working gas,and-20KV voltage pulses were applied to the substrate holder to accelerate ions in the *** Raman spectra confirmed the DLC characteristics of the ***-transform infrared characterization indicates that the DLC films were composed of sp^3 and sp^2 carbonbonded *** hardness of the films was evaluated with a Nano Indenter-XP *** result shows that the highest hardness valus was 14.6 *** surface rms roughness of the films was as low as 0.104nm measured with an atomic force *** friction coeffcient of the films was checked using a ball-on-disk *** average friction coefficient is approximately 0.122.

关键词：硅衬底等离子体源电子回旋加速器薄膜生长离子注入微波加速器拉曼光谱傅里叶变换

Helicobacter pylori infection in gastric mucosa-associated lymphoid tissue lymphoma

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World Journal of Gastroenterology 2014年第11期20卷 2751-2759页

作者： Jeong Bae Park ja Seol KooJeong Department of Internal medicine College of MedicineDongguk UniversityGyeongju 780-350South Korea Division of Gastroenterology and Hepatology Department of Internal MedicineKorea University Ansan HospitalAnsan 425-707South Korea

Gastrointestinal lymphoma is the most common type of extranodal lymphoma,and most commonly affects the *** zone B-cell lymphoma of the mucosa-associated lymphoid tissue(maLT)and diffuse large B-cell lymphoma are the most common histologic types of gastric *** its increasing incidence,diagnosis of gastric lymphoma is difficult at an earlier stage due to its nonspecific symptoms and endoscopic findings,and,thus,a high index of suspicion,and multiple,deep,repeated biopsies at abnormally and normally appearing sites in the stomach are *** addition,testing for Helicobacter pylori(***)infection and endoscopic ultrasonography to determine the depth of tumor invasion and involvement of regional lymph nodes is essential for predicting response to *** eradication and for assessment of disease *** addition,*** infection and maLT lymphoma development are associated,and complete regression of low-grade maLT lymphomas after *** eradication has been *** and/or chemotherapy can be used in cases that show poor response to *** eradication,negativity for *** infection,or high-grade lymphoma.

关键词： mucosa-associated lymphoid tissue Lymphoma Helicobacter pylori Eradication Remission

Insulinotrophic and hypolipidemic effects of Ecklonia cava in streptozotocin-induced diabetic mice

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Asian Pacific Journal of Tropical medicine 2012年第5期5卷 374-379页

作者： mi-ja Kim Hye Kyung Kim Department of Food and Biotechnology Hanseo UniversitySeosan 356-706Republic of Korea Department of Pharmacology school of MedicineKyunghee UniversitySeoul 130-701Republic of Korea

Objective:To explore the anti-diabetic activity of Ecklonia cava(EC) in streptozotocin(STZ)-induced diabetic ***:Diabetes was induced by a single intraperitoneal injection of STZ(90 mg/kg).Normal and diabetic mice were treated with 0%,3%,and 5%EC diet for 4 weeks. Serum glucose and insulin concentrations,serum lipid profile,oral glucose tolerance test,and liver and pancreaticβ-cell histopathological observations were *** addition,in vitro glucose-induced insulin secretion was determined using pancreaticβ-islet ***:EC supplementation significantly and dose-dependently decreased serum glucose concentration, and improved glucose homeostasis in diabetic mice by preventing loss ofβ-cell mass resulting in increase of insulin *** triglyceride and total cholesterol concentrations in the serum and liver were markedly reduced by EC treatment in STZ-diabetic ***,LDL-,and HDL-cholesterol levels were ameliorated in EC supplemented diabetic *** steatosis induced by STZ was ameliorated by EC ***,in vitro insulinotrophic effect of EC extract was observed in pancreaticβ-***:This study demonstrated that EC is a potent and efficacious hypoglycemic and hypolipidemic agent,and prevents the loss ofβ-cell mass resulting in increase of insulin secretary capacity.

关键词： Diabetes Streptozotocin Insulin Lipid profile Pancreaticβ-cell

CONJUGATE FLOWS OVER A STEP IN A THREE-LAYER FLUID

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Journal of Hydrodynamics 2002年第4期14卷 15-23页

作者： Wei, Gang Le, ja-Chun Dai, Shi-Qiang Inst. of Appl. math. and mech. Shanghai Univ. Shanghai 200072 China Sch. of Sci. P.L.A Univ. of Sci. and Eng. Nanjing 211101 China

The conjugate flows over a step with the height h_0, which might be positive or negative, was studied in a three-layer fluid and the coupled nonlinear equations were derived, with which the effects of varying height h_0 on the existence and evolution of conjugate flows were examined. It is concluded that the conjugate flow is sharply sensitive to the thickness of fluid layers and its characteristics alters remarkably due to the existence of the step. As the flow climbs up a step (h_0>0), the conjugate flow with a convex lower interface and a concave upper interface is allowed to appear, while the flow with the concave lower interface or the simultaneous concave interfaces will be depressed. As the flow goes down a step (i.e., h_0most occasions only one kind of conjugate flow could exist, which prossesses the form with the simultaneous convex interfaces and will disappear rapidly with the increase of the step depth.

关键词： conjugate flow flat solitary wave stratified flow step topography three-layer fluid

Crowdsourcing geographic information for disaster response:a research frontier

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International Journal of Digital Earth 2010年第3期3卷 231-241页

作者： michael F.Goodchild ja.lan Glennon Center for Spatial Studies University of CaliforniaSanta BarbaraCA 93106-4060USA

Geographic data and tools are essential in all aspects of emergency management:preparedness,response,recovery,and *** information created by amateur citizens,often known as volunteered geographic information,has recently provided an interesting alternative to traditional authoritative information from mapping agencies and corporations,and several recent papers have provided the beginnings of a literature on the more fundamental issues raised by this new *** quality is a major concern,since volunteered information is asserted and carries none of the assurances that lead to trust in officially created *** emergencies time is the essence,and the risks associated with volunteered information are often outweighed by the benefits of its *** example is discussed using the four wildfires that impacted the santa Barbara area in 20072009,and lessons are drawn.

关键词： emergency management volunteered geographic information crowdsourcing Web 2.0 neogeography wildfire santa Barbara

EFFECT OF LOADING TYPE ON FATIGUE CRACK GROWTH BEhaVIOR OF SOLDER JOINT IN ELECTRONIC PACKAGING

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Acta mechanica Solida Sinica 2014年第3期27卷 245-258页

作者： Xishu Wang Huaihui Ren Bisheng Wu Su ja Norio Kawagoishi Department of Engineering mechanics AML Tsinghua University China Longyuan Power Group Corporation Limited China Goudian CSIRO Earth Science and Resource Engineering Clayton VIC 3168 Australia Department of mechanical System Engineering Daiichi Institute of TechnologyKagoshima 899-4395 Japan

Fatigue cracking tests of a solder joint were carried out using in-situ scanning electron microscopy （SEm） technology under tensile and bending cyclic loadings. The method for predicting the fatigue life is provided based on the fatigue crack growth rate of the solder joint. The results show that the effect of the loading type on the fatigue crack growth behavior of a solder joint cannot be ignored. In addition, the finite element analysis results help quantitatively estimate the response relationship between solder joint structures. The fatigue crack initiation life of a solder joint is in good agreement with the fatigue life （N50%） of a totally electronic board with 36 solder joints.

关键词： microcracking fatigue mEmS experimental techniques finite element method

Growth characteristics and pathogenic consequences of predominant entomopathogenic Yukon soil fungi mortierella alpina and Penicillium expansum,and effectiveness of met52®,against larvae of the winter tick,Dermacentor albipictus

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Studies in Fungi 2019年第1期4卷 101-110页

作者： Yoder ja Krieger m Oakley m Trotter J Schmelzer P Niksic A Rodell Bm Klever LA Department of Biology Wittenberg UniversitySpringfieldOH45501USA Champagne and Aishihik First Nations Haines JunctionYTY0B 1L0CAN Oakley Veterinary Services HainesAK99827USA

Water activity-temperature relationships are reported for Yukon soil-isolated strains of mortierella alpina and Penicillium expansum that are natural enemies to larvae(infestation stage)of the winter tick Dermacentor *** fungal strains are psychrotrophs,characterized by low thermal growth ranges,consistent with their occurrence in Yukon *** contrast to ***,*** is more temperature sensitive,has a higher requirement,and is more virulent to tick *** and Biological Control Officers should note that for tick population control these *** and *** strains grow and sporulate well under moderate temperature and humid *** experiments used met52®Bioinsecticide as a positive control,and this is the first study that demonstrates the effectiveness of this commercial product against winter tick larvae.

关键词： Alaska biological control Canada elk tick horse tick moose tick temperature water activity

A Smoothing Newton method for the Box Constrained Variational Inequality Problems

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Chinese Quarterly Journal of mathematics 2012年第1期27卷 152-158页

作者： XIE ya-jun ma Chang-feng Department of Computer Science College of Fujian JiangxiaFuzhou 350108China School of mathematics and Computer Science Fujian Normal UniversityFuzhou 350007China

The box constrained variational inequality problem can be reformulated as a nonsmooth equation by using median *** this paper,we present a smoothing Newton method for solving the box constrained variational inequality problem based on a new smoothing approximation *** proposed algorithm is proved to be well defined and convergent globally under weaker conditions.

关键词： median operator variational inequality problem smoothing Newton method global convergence

nhibitory Role of Pentraxin-3 in Esophageal Squamous Cell Carcinoma

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Chinese medical Journal 2016年第18期 2233-2240页

作者： Dan ja Department of Gastroenterology Beijing Friendship Hospital Capital Medical University Beijing 100050 China National Clinical Research Center for Digestive Diseases Beijing 100050 China Beijing Digestive Disease Center Beijing 100050 China Beijing Key Laboratory for Precancerous Lesion of Digestive Diseases Beijing 100050 China

Background： Esophageal cancer is the sixth leading cause of cancer-related death worldwide. Pentraxin-3 （PTX3） is a member of the PTX superfamily. Here, we investigated the role of PTX3 in esophageal squamous cell carcinoma （ESCC）. methods： The effect of PTX3 on ESCC cell proliferation, colony formation, apoptosis, migration, and invasion was investigated using cell viability assays, colony formation assays, flow cytometry, and migration and invasion assays. The effect of PTX3 on the tumorigenicity of ESCC in vivo was investigated with xenograft studies in nude mice. Results： PTX3 overexpression in ESCC cells reduced cellular proliferation and colony formation （P 〈 0.05） and increased the rate of apoptosis （P 〈 0.05）. PTX3 expression had no significant effect on the migratory or invasive potential of ESCC cells. In our mouse model of human ESCC, we achieved 100% successful tumor establishment. Compared with the control and empty vector-expressing groups, the PTX3-expressing group formed significantly smaller tumors （P 〈 0.05）. Conclusions： This study indicates that PTX3 might play an inhibitory role in ESCC.

关键词： Apoptosis Esophageal Squamous Cell Carcinoma Pentraxin-3 Proliferation