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Highly Sensitive Fiber-Optic Faraday-Effect Magnetic Field Sensor Based on Yttrium Iron Garnet

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Journal of Materials Science & Technology 2000年第2期16卷 205-206页

作者： Wenbo FEI (department of Physics, Northeastern universitys shenyang 110006, china) department of Physics Northeastern University Shenyang 110006 China

The principle and performance of a fiber-optic Faraday-effect magnetic-field sensor based on an yttrium iron garnet (YIG) and two flux concentrations are described. A single polarization-maintaining optical fiber links the sensor head to the source and detection system, in which the technique of phase shift cancellation is used to cancel the phase shift that accumulatein the optical fiber. Flux concentrators were exploited to enhance the YIG crystal magneto-optic sensitivity .The sensor system exhibited a noise-equivalent field of 8 pT/√Hz and a 3 dB bandwidth of ～10 MHz.

关键词： YIG Highly Sensitive Fiber-Optic Faraday-Effect Magnetic Field Sensor Based on Yttrium Iron Garnet

PREPARATION AND CHARACTERIZATION OF α-H_5[GeW_9Mo_2VO_(40)]·22H_2O

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Chinese Chemical Letters 1993年第6期4卷 547-550页

作者： Sheng Xian XU Qing Yin WU Yu Lin SONG Shu Kun WANG (department of Chemistry,liaoning university,shenyang,110036)

A new mixed heteropoly acid,α-H_σ[GeW_eMo_2VO_(40)].22H_2O,bas been prepared and characterized by means of ICP,potentiometric titration,IR and UV spectra, X-ray powder diffraction and thermal analysis.

关键词： Chen H5[GeW9Mo2VO PREPARATION AND CHARACTERIZATION OF Wang Mo

Origin of the Red Earth sequence on the northeastern Tibetan Plateau and its implications for regional aridity since the middle Miocene

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Science china Earth sciences 2006年第5期49卷 505-517页

作者： WANG Xianyan1,7, LU Huayu1,2, JI Junfeg3, WANG Xiaoyong1,7, ZHAO Jingbo4, HUANG Baochun5 & LI Zhen6 1. SKLLQG, Institute of Earth environment, Chinese Academy of sciences, Xi’an 710075, china 2. department of Urban and Resources sciences, Nanjing university, Nanjing 210093, china 3. department of Earth sciences, Nanjing university, Nanjing 210093, china 4. department of Geography, Shaanxi Normal university, Xi’an 710062, china 5. Institute of Geology and Geophysics, Chinese Academy of sciences, Beijing 100029, china 6 department of Geography, Qinghai Normal university, Xining 810008, china 7. Graduate School of the Chinese Academy of sciences, Beijing 100039, china 1. SKLLQG Institute of Earth Environment Chinese Academy of Sciences Xi’an 710075 China 7. Graduate School of the Chinese Academy of sciences Beijing 100039 China 2. department of Urban and Resources sciences Nanjing University Nanjing 210093 China 3. department of Earth sciences Nanjing University Nanjing 210093 China 4. department of Geography Shaanxi Normal University Xi’an 710062 China 5. Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China 6. department of Geography Qinghai Normal University Xining 810008 China

The Red Earth deposit around Xining, northeastern Tibetan Plateau, has beenstudied in terms of soil micro-structure, grain-size distribution, major- and trace-elementchemistry and magne-tostratigraphy. Field investigations indicate that the Red Earth sequenceconsists of 25 visually definable yellow-brown and weakly-developed soils interbedded with reddishstrongly-developed soils, and has a similar structure to the aeolian Red Clay deposit on the ChineseLoess Plateau. Grain-size analysis shows that the Red Earth deposit is very fine-grained with anegligible sand fraction ( > 63 μm). Thin-section observations under light microscopy show that thedeposit has a clayey texture and the coarse fraction ( > 10 μm) mainly consists of quartz,feldspar and micas. Pyroxene and hornblende were also observed. This mineralogical composition ofthe coarse fraction is similar to that of the Quaternary loess. In addition, all of the mineralgrains are semi angular semi-angular and are generally finer than 63 μm. There is a good agreementbetween the major and minor trace element chemistry of loess-soil units and the Red Earth *** REE distributions of the loess-soil and the Red Earth deposit are similar in shape, withenriched LREE and fairly flat HREE profiles and a clear negative Eu anomaly. The geochemicalcharacteristics of the Red Earth deposit are also identical to those of upper continental crust,thus indicating a wind-blown origin. Magnetostratigraphic investigation shows that onset of the RedEarth deposition predates 11.4 Ma BP (13.6 Ma at a nearby site). The distribution of the reportedMiocene aeolian loess at Qin''an of the Loess Plateau is still unknown. Our results indicate thatthis aeolian deposit had extended to the northeastern Tibetan Plateau by at least the middleMiocene. The similarity of the element geochemistry between the Red Earth deposit and the overlyingloess shows that they may have similar sources and dynamic transport system, and may indicate thatthe

关键词： Red Earth deposit, Northeastern Tibetan Plateau, aeolian deposit, aridity of Asia, the middle Miocene.

New data regarding acritarch biostratigraphy from the Early-Middle Cambrian Kaili Formation in Chuandong,Guizhou Province,china

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Progress in Natural Science:Materials International 2009年第1期19卷 107-114页

作者： Leiming Yin a,Ruidong Yang b,Jin Peng c,Fanfan Kong a a Nanjing Institute of Geology and Palaeontology,Chinese Academy of sciences,Nanjing 210008,china b College of Resource and environment of Guizhou university,Guiyang 550003,china c department of sciences of Nanjing university,Nanjing 210093,china [a]Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China [b]College of Resource and Environment of Guizhou University Guiyang 550003 China [c]Department of Sciences of Nanjing University Nanjing 210093 China

Previous studies had evaluated acritarchs from the Balang and Pingzhai sections of the Early-Middle Cambrian Kaili Formation in east Guizhou,*** results of these studies suggest that the acritarchs in these sections have potential biostratigraphic *** recently,34 samples collected from 83 m lower part of the Lower-Middle Cambrian Kaili Formation in the Jianshan section of Chuandong,Guizhou Province were prepared for palynological *** of these samples revealed a distinct change in the acritarch assemblages at the bed,which was approximately 46 m above the bottom of the Kaili *** findings suggest a boundary represented by an important alteration of the ecological *** addition,the position of the acritarch biostratigraphic change is somewhat higher than the boundary between Cambrian Series 2 and Series 3 based on trilobites found in the same *** indicates that the distinct change in acritarch assemblages is similar to the change in trilobite assemblages that occurs around the boundary between Cambrian Series 2 and Series ***,acritarch biostratigraphy can provide data that can be used to define the base of Cambrian Series 3 in this region,and possibly worldwide.

关键词： Acritarchs Lower-Middle Cambrian Kaili Formation Jianshan section Chuandong

THE APPLICATION OF ARTIFICIAL NEURAL NETWORKS TO INVESTIGATION ON THE THICKNESS OF INTERMETALLIC LAYER UNDER SOLID-LIQUID PRESSURE BONDING OF STEEL AND ALUMINIUM

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Acta Metallurgica Sinica(English Letters) 1997年第6期10卷 523-526页

作者： P. Zhang J.Z. Cui Y.H. Du and Q.Z. Zhang(department of Metal Forming, Northeastern university, shenyang 110006, china)(department of Mining, Northeastern university, shenyang 110006, china) Northeastern Univ Shenyang China

Artificial neural networks (ANN), being a sophisticated type of information processing system by imitating the neural system of human brain, can be used to investigate the effects of concentration of flux solution, temperature of liquid aluminium, temperture of tools and pressure on thickness of the intermetallic layer at the interface between steel and aluminium under solid-liquid pressure bonding of steel and aluminium perfectly. The optimum thickness has been determined according to the value of the optimum shearing strength.

关键词： artificial neural network thickness of the intermetallic layer,solid-liquid pressure bonding

The Production of Organic-Inorganic Compound Film-Coated Urea and the Characteristics of Its Nutrient Release

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Agricultural sciences in china 2009年第6期8卷 703-708页

作者： ZOU Hong-tao, WANG Yao-sheng, SONG Hao-wen, HAN Yan-yu, YU Na, ZHANG Yu-ling, DANG Xiu-li, HUANG Yi and ZHANG Yu-long College of Land and environmental sciences, shenyang Agricultural university/liaoning Key Laboratory of Agricultural Resources and environment/Northeast Key Laboratory of Soil and environment, Ministry of Agriculture, shenyang 110161, P.R.china [a]College of Land and environmental sciences Shenyang Agricultural University/Liaoning Key Laboratory of Agricultural Resources and Environment/Northeast Key Laboratory of Soil and Environment Ministry of Agriculture Shenyang 110161 P.R. China

The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the optimal concentrations for better nutrient release was proposed. The characteristics of nutrient release of film-coated urea were evaluated by soil column leaching experiment. Organic-inorganic compound film-coated urea showed good characteristics of nutrient release, which could be well simulated by Logistic curve. The two parameters in this curve, a and r, can be used to present nutrient release of film-coated urea, and followed the order of B 〉 C 〉 A and C 〈 B 〈 A, respectively, indicating that the release was stronger with the increasing concentration of natural macromolecular compound in the membrane, which implied better controllability of nutrient release. The concentration of 5% of natural macromolecular compound showed better characteristic of nutrient release and can be utilized as a membrane material combined with inorganic mineral powders to develop film-coated slow-release fertilizer.

关键词： organic-inorganic compound film-coated urea nutrient release characteristics

Effect of calcitonin gene-related peptide and nerve growth factor on spatial learning and memory abilities of rats following focal cerebral ischemia/reperfusion

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Neural Regeneration Research 2006年第8期1卷 673-676页

作者： Guangshun Zheng1, Yongjie Yang2, Xiubin Fang3 1department of Neurosurgery, Second Hospital of Xiamen, Xiamen 361021, Fujian Province, china 2department of Neurosurgery, Second Hospital Affiliated to china Medical university, shenyang 110004, liaoning Province, china 3department of Neurobiology, Basic Medical College of china Medical university, shenyang 110001, liaoning Province, china department of Neurosurgery Second Hospital of Xiamen Xiamen 361021 Fujian Province China department of Neurosurgery China Medical University Shenyang 110004 Liaoning Province China department of Neurobiology Basic Medical College China Medical University Shenyang 110001 Liaoning Province China

BACKGROUND: Calcitonin gene-related peptide (CGRP) and nerve growth actor (NGF) cam improve spatial learning and memory abilities of rats with cerebral ischemia/reperfusion; however, the effect of combination of them on relieving learning and memory injury following cerebral ischemia/reperfusion should be further studied. OBJECTIVE: To study the effects of exogenous CGRP and NGF on learning and memory abilities of rats with focal cerebral ischemia/reperfusion. DESIGN: Randomized controlled animal study. SETTING: department of Neurosurgery, the Second Hospital of Xiamen; department of Neurosurgery, the Second Affiliated Hospital of china Medical university; department of Neurobiology, Basic Medical College of china Medical university. MATERIALS: A total of 30 healthy male SD rats, aged 8 weeks, of clean grade, weighing 250-300 g, were provided by Experimental Animal department of china Medical university. All rats were randomly divided into sham-operation group, ischemia/reperfusion group and treatment group with 10 in each group. The main reagents were detailed as the follows: 100 g/L chloral hydrate, 0.5 mL CGRP (2 mg/L, Sigma Company, USA), and NGF (1× 106 U/L, 0.5 mL, Siweite Company, Dalian). METHODS: The experiment was carried out in the department of Neurobiology, Basic Medical College of china Medical university from February to July 2005. Rat models of middle cerebral artery occlusion were established by method of occlusion, 2 hours after that rats were anesthetized and the thread was slightly drawn out for 10 mm under direct staring to perform reperfusion. Rats in the ischemia/reperfusion group received intraperitoneal injection of 1 mL saline via the abdomen at two hours later, while rats in the treatment group at 2 hours later received intraperitoneal injection of 2 mg/L CGRP (0.5 mL) and 1×106 U/L NGF (0.5 mL) once a day for 10 successive days. First administration was accomplished within 15 minutes after ischemia/reperfusion. Rats in the sham-operation

关键词： Effect of calcitonin gene-related peptide and nerve growth factor on spatial learning and memory abilities of rats following focal cerebral ischemia/reperfusion CGRP MCAO gene

Relationship between collagen Ⅳ expression and biological behavior of gastric cancer

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World Journal of Gastroenterology 2000年第3期6卷 438-439页

作者： Zhen Ning Wang Hui Mian Xu Oncology department,china Medical university,shenyang 110001,liaoning Province,china

INTRODUCTION Conceivably the presence of basement membrane(BM)in a neoplasm might be a result of interactionof tumor cells with the extracellular *** Ⅳ is one of the major intrinsic componentsof *** study has shown that collagen Ⅳhas cell adhesion function and is involved in theprocess of tumor invasion and metastasis,includingcolorectal cancer and breast *** there arefew systematic studies on gastric cancer and theresults are *** this study we evaluated

关键词： stomach neoplasms collagen IV biological behavior immunohistochemisty

Corticosteroids or non-corticosteroids: a fresh perspective on alcoholic hepatitis treatment

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Hepatobiliary & Pancreatic Diseases International 2011年第5期10卷 458-464页

作者： Fei Wang and Bing-Yuan Wang department of Gastroenterology, First Affiliated Hospital, china Medical university, shenyang 110001, china department of Gastroenterology First Affiliated Hospital China Medical University Shenyang 110001 China

BACKGROUND: Alcoholic hepatitis (AH) is a necrotizing inflammatory process caused by alcoholic liver injury. It carries a significant short-term mortality. The management of AH is challenging. Although corticosteroids have been demonstrated to exert anti-inflammatory and antifibrotic effects, their efficacy for the treatment of AH remains debatable. DATA SOURCES: A literature search was performed of MEDLINE, ScienceDirect, SpringerLink and Wiley InterScience using the key words 'alcoholic hepatitis', 'alcoholic liver disease', and 'corticosteroids'. The available data reported in the relevant literature were analyzed. RESULTS: More than 17 controlled trials and at least 13 meta-analyses have reported the efficacy of corticosteroids in the treatment of AH in the past 40 years. Many were poorly designed and used different inclusion/exclusion criteria, making it difficult to reach a consensus. In this review, we summarized all the controversial data in the past decade and analyzed the potential causes for the varying therapeutic effects of corticosteroids in AH. The focus of the controversy has changed from 'whether steroids are beneficial or harmful for AH patients' to 'how to accurately identify responders to steroids early and rationalize corticosteroid treatment'. An early response to glucocorticoids, as determined by calculating the Lille score after 7 days of treatment, has been shown to be a clinically useful indicator. Moreover, down-regulation of steroid sensitivity, risk of infection, and a rational therapeutic strategy of corticosteroids in AH patients are all crucial for therapeutic ***: An early and accurate determination of steroid sensitivity is important. Besides, we need to overcome the down-regulation of steroid sensitivity, reduce the infection risk and rationalize the therapeutic strategy of corticosteroids. A fresh perspective is needed on the use of corticosteroids in AH patients.

关键词： corticosteroids alcoholic liver disease alcoholic hepatitis steroid sensitivity scoring system