检索结果-南通市图书馆

A Method for Obtaining Three-dimensional Images with Visual Reality of Real Objects

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Lasers 1999年第5期8卷 425-430页

作者： HUANG Qiong SU Xianyu(department of Opto-electronics, sichuan university, chengdu 610064, china) 四川大学光电子系四川成都 610064 四川大学光电子系四川成都

A new method to remove the shadows in laser triangulation and a computer model for three-dimensional images with visual reality of three-dimensional diffuse objects are presented. The methods for acquiring color data in optical three-dimensional sensing are discussed A method for obtaining three-dimensional images with visual reality of real objects is presented The principles, the system structure and the experimental results are provided.

关键词： three-dimensional sensing laser triangulation shadow three-dimensional images with visual reality

Theoretical study of the potential energy surface and the highly excited rovibra-tional spectroscopy of H_2S molecule

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2001年第8期46卷 650-652页

作者： XIE Junkai & YAN Guosendepartment of Chemistry, sichuan Normal university, chengdu 610066, china department of Chemistry, sichuan university, chengdu 610064, china department of Chemistry Sichuan Normal University Chengdu China department of Chemistry Sichuan University Chengdu China

This note reports the potential energy surface of H2S that has been refined by using SCF-CI approach and the high-resolution experimental data. The calculated splitting values of the local mode vibration states pair close to observed values. This vibration state calculation has shown that there are no obvious non-Born Oppenheimer effects occurring in the lower vibration states of the system.

关键词： potential energy surface local mode vibration state non- Born Oppenheimer effect.

Diffusion Equation on Fractals:Three-Dimensional Case

在线全文

学校读者我要写书评

暂无评论

Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 3-5页

作者： Qiuhua ZENG and Houqiang LI(department of Physics, sichuan university, chengdu 610064, china) department of Physics Sichuan University ChengDu 610064 China

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic... 详细信息

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic...

关键词： comb model probability density diffusion on fractals

Inhibition of Collagen Synthesis and Regulation of Cell Motility in Vascular Smooth Muscle Cells by Suppression of Connective Tissue growth Factor Expression Using RNAInterference

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

生物医学工程学杂志 2005年第S1期22卷 137-138页

作者： Xiao-Jing LIU~1 Huai-Qing CHEN~(1,2)1(Laboratory of Cardiovascular Diseases, west china hospital, sichuan university,chengdu 610041,china)2(Institute of Biomedical Engineering, sichuan university, chengdu 610041,china) Laboratory of Cardiovascular Diseases West China Hospital Sichuan University Chengdu 610041 Chiha Laboratory of Cardiovascular Diseases West China Hospital Sichuan University Chengdu 610041 Chiha Institute of Biomedical Engineering Sichuan University Chengdu 610041 China

1 IntroductionVascular smooth muscle cell (VSMC) hyperplasia plays an important role in both chronic and acute pathologies including atherosclerosis and restenosis. Recent studies have shown that connective tissue gro... 详细信息

关键词： VSMC CTGF

On nulls of perturbed Fredholm operators and degenerate homoclinic bifurcations

在线全文

学校读者我要写书评

暂无评论

Science china Mathematics 2004年第4期47卷 617-627页

作者： ZHANG Weiniandepartment of Mathematics, sichuan university, chengdu 610064, china 1. department of Mathematics Sichuan University 610064 Chengdu China

It is known that small perturbations of a Fredholm operatorL have nulls of dimension not larger than dimN(L). In this paper for any given positive integer κ ? dimN(L) we prove that there is a perturbation ofL which has an exactly κ-dimensional null. Actually, our proof gives a construction of the perturbation. We further apply our result to concrete examples of differential equations with degenerate homoclinic orbits, showing how many independent homoclinic orbits can be bifurcated from a perturbation.

关键词： Fredholm operator, perturbation, dimension, decomposition, degenerate homoclinic bifurcation.

STAT1 Antisense Oligonucleotides Attenuate the Proinflammatory Cytokine Release of Alveolar Macrophages in Bleomycin-Induced Fibrosis

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2005年第3期2卷 211-217页

作者： Xianming Fan~(1,3) Zengli Wang~2 ~1department of Respiratory Medicine,the Affiliated hospital of Luzhou Medical College,Luzhou 646000,china ~2department of Respiratory Medicine,west china hospital,sichuan university,chengdu 610041,china ~3Corresponding to:Dr.Xianming Fan,department of Respiratory Medicine,the Affiliated hospital of Luzhou Medical College,Luzhou 646000,china. department of Respiratory Medicine the Affiliated Hospital of Luzhou Medical College Luzhou 646000 China. fxm129@***

To investigate the effect of signal transducers and activators of transcription 1 （STAT1） antisense oligonucleotides （ASON） on concentrations of TNF-α IL-8, NO secreted by alveolar macrophages （AMs） in bleomycin-induced rat pulmonary fibrosis, five adult female Wistar rats were intratracheally instilled with bleomycin. After 7 days, the rats were killed by right ventricle of heart exsanguinations under ketamine anaesthesia and bronchoalveolar lavage （BAL） was performed to obtain AMs. AMs were divided into four groups, treated with STAT1 ASON, STAT1 sense oligonucleotides （SON）, dexamethasone （DEX） and medium alone （control）, respectively. AMs and media were collected after culture for 36 h. The mRNA and protein expressions of STAT1 and ICAM-1 in AMs were detected by RT-PCR and ELISA, respectively. The concentrations of TNF-α IL-8, NO in cultured medium were detected. The STAT1 mRNA expression by AMs in the STAT1 ASON group was lower than those of AMs in the STAT1 SON group, the DEX group and the control group （p 〈 0.05）. Moreover, the STAT1 mRNA expression by AMs in the DEX group was also lower than those of AMs in the STAT1 SON group and the control group （p 〈 0.05）, but the STAT1 mRNA expression by AMs in the STAT1 SON group was not different from that of the control group （p 〉 0.05）. The protein expressions of STAT1 and ICAM-1 and the mRNA expression of ICAM-1 showed similar changes to the STAT1 mRNA expression by AMs. The concentrations of TNF-α IL-8, NO in cultured medium from STAT1 ASON group were lower than those from STAT1 SON, DEX and the control groups （p 〈 0.05）. Moreover, the concentrations of TNF-α IL-8, NO in cultured medium from DEX group were also lower than those from the control and STAT1 SON group （p 〈 0.05）, but no difference between STAT1 SON group and the control （p 〉 0.05）. The results suggest that STAT1 ASON could inhibit the secretion of TNF-α IL-8, NO in AMs, and STAT1 could become a target of treating pulmonary fibrosis. Cellular ＆ Molecul

关键词： STAT1 pulmonary fibrosis alveolar macrophage ASON

Clinical characteristics of critical patients with pandemic influenza A(H1N1) virus infection in chengdu,china

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang university-Science B(Biomedicine & Biotechnology) 2012年第1期13卷 49-55页

作者： Li-hui DENG1,2,Yi-lan ZENG3,Ping FENG1,Ya-ling LIU3,Li-chun WANG1,2,Yun BAI3,Hong TANG1,2(1Center of Infectious Diseases,west china hospital of sichuan university,chengdu 610041,china)(2Division of Infectious Diseases,State Key Laboratory of Biotherapy,sichuan university,chengdu 610041,china)(3chengdu Infectious Disease hospital,chengdu 610041,china) Center of Infectious Diseases West China Hospital of Sichuan University Chengdu 610041 China

Objective： The critical illness of pandemic influenza A （H1N1） virus infection may be associated with relatively poor outcomes. The objective of this study is to describe clinical features and factors associated with the deaths of critical patients. Methods： Medical records of 26 critical patients with H1N1 infection admitted from Sept. 1 to Dec. 31, 2009, were retrospectively reviewed. Diagnosis was established by real-time reverse transcdptase- polymerase chain reaction （RT-PCR） assay. Results： The mean age of the patients was （40.4＋18.4） years and 73.1% of them were male. Clinical manifestations included fever, cough, and sputum production. The laboratory findings included leukocytosis, lymphopenia, C-reaction protein, and lactic dehydrogenase elevation. In this series, 17 subjects survived and 9 died. The parameters between the deaths and survivors were compared, which included acute physiology and chronic health evaluation II （APACHE II） scores （23.8＋10.1 vs. 14.3_＋6.6, P〈0.05）, sequential organ failure assessment （SOFA） scores （13.3_＋3.0 vs. 6.6_＋3.3, P〈0.05）, and multiple organ dysfunction syndrome （MODS） scores （7.4＋2.5 vs. 3.3＋1.7, P〈0.05）. The cases of deaths had higher incidences of cardiovascular failure （100% vs. 41.2%, P〈0.05）, renal failure （55.6% vs. 11.7%, P〈0.05）, encephalopathy （44.4% vs. 5.9%, P〈0.05）, hepatic failure （33.3% vs. 5.9%, P〈0.05）, and septic shock （33.3% vs. 17.6%, P〈0.05）. Conclusions： The critical patients with H1 N1 infection have high APACHE II, SOFA, and MODS scores, which may be associated with an increased risk of death and complex clinical courses.

关键词： Critical illness H1N1 Infection Influenza A virus Mortality

Toll-like receptor 4-mediated apoptosis of pancreatic cells in cerulein-induced acute pancreatitis in mice

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2010年第6期9卷 645-650页

作者： Si-Qin Ding,Yuan Li,Zong-Guang Zhou,Cun Wang,Lan Zhan and Bin Zhou Institute of Digestive Surgery,department of Gastrointestinal Surgery,and department of Pediatric Surgery, west china hospital,sichuan university,chengdu 610041,china Institute of Digestive Surgery West China Hospital Sichuan University Chengdu 610041 China.

BACKGROUND:Toll-like receptor 4(TLR4)plays an important role in the occurrence and development of acute pancreatitis (AP).Apoptosis of pancreatic cells is closely related to the severity of ***4 is known to induce apoptosis in some cell types and therefore it is of importance to investigate potential associations between TLR4 activity and apoptosis in the setting of AP. METHODS:A total of 50 wild-type(C57BL/10J)and TLR4-deficient(C57BL/10ScNJ)mice were divided into three groups:2-hour,4-hour,and control *** group was divided into two equal subgroups:TLR4-wild-type mice and TLR4-deficient *** was experimentally induced by 7 intraperitoneal injections of 50μg/kg cerulein at hourly *** mice received 7 injections of equal volumes of *** severity of pancreatic injury during AP was assessed by serum amylase concentration and histopathology. The level of apoptosis of pancreatic cells in response to AP was evaluated by calculating the apoptotic index(AI)and comparing the expression levels of cytochrome C and Fasassociated protein with death domain(FADD)between TLR4-wild-type and TLR4-deficient mice at 2 time points. RESULTS:The AI was found to be significantly lower in the pancreas of TLR4-deficient mice with AP compared to TLR4-wild-type mice at two hours after the last treatment ***-linked immunosorbent assay and real-time reverse transcription-polymerase chain reaction also revealed significantly lower expression of cytochrome C and FADD in the pancreas of TLR4-deficient mice than in TLR4-wild-type animals at the same time *** amylase concentration and morphological severity of AP in pancreatic tissue were found to be similar in the two strains of mice at both time ***:We postulate that TLR4 can mediate apoptosis of pancreatic cells during the early stages of AP,via the activation of both intrinsic and extrinsic apoptotic signaling pathways.

关键词： acute pancreatitis toll-like receptor 4 apoptosis cytochrome C Fas-associated protein with death domain

Apoptosis Induced by Zinc Deficiency in Rat Osteoblast:Possible Involvement of Protein Kinase C

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 1999年第3期12卷 101-109页

作者： CEN XIAO-BO WANG RUI-SHU AND WANG HANG(Medical Experimeatel Center, the First hospital of west china university of Medical Sciences (WCUMS), chengdu 610041, china Derpartment of Public of Health (WCUMS) department of Stomatology (WCUMS)) Medical Experimental Center First Hospital of West China University of Medical Sciences Chengdu China

Ra ostcobasts were isolated from the 21-day fetal rat calvchas. The cells were grown in DMEM Plus 10% FBS, and were treated for 24 h. with 10 μmol/L TPEN or 10 μmol/L TPEN supplemented with 10 μmol/L Zn2+. Apoptosis of osteoblasts were measured by fiow cytometry, electron microscopy and DNA fragmentation analyzed by gel elecmphoresis. In addition, IP3 production and PKC activity were measmed in ordr to show whether they are involved in apoptosis in osteoblast induced by alnc deficiency. The results showed that 10 μmol/L TPEN could induce apoptosis in osteoblast in 24 h. But cells ed with 10μmol/L TPEN supplemented with 10 μmol/L Zn2+ showed no apoptotic changs in 24 h. TPEN significantly reduced the formation of IP3 and PKC activity after 24 h incubation. No differences were observed between the cells treated with TPEN supPlemented with Zn2+ simulaneosly and the untreated cells. It can be inferred that apoptosis induced by ainc deficiency may be due to the decreased activity of PKC which is impaired by reduced formation of IP3.

关键词： Apoptosis Induced by Zinc Deficiency in Rat Osteoblast Cell cell