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3670篇 您的检索式:作者名="Gu D"
    题名 作者 年代 出处 被引量
1New yellow Ba_(0.93)Eu_(0.07)Al_(2)O_(4) phosphor for warm-white light-emitting diodes through single-emitting-center conversion显示文摘Phosphor-converted white light-emitting diodes for indoor illumination need to be warm-white(i.e.,correlated color temperature,4000 K)with good color rendition(i.e.,color rendering index.80).However,no single-phosphor,single-emitting-center-converted white light-emitting diodes can simultaneously satisfy the color temperature and rendition requirements due to the lack of sufficient red spectral component in the phosphors’emission spectrum.Here,we report a new yellow Ba_(0.93)Eu_(0.07)Al_(2)O_(4) phosphor that has a new orthorhombic lattice structure and exhibits a broad yellow photoluminescence band with sufficient red spectral component.Warm-white emissions with correlated color temperature,4000 K and color rendering index.80 were readily achieved when combining the Ba_(0.93)Eu_(0.07)Al_(2)O_(4) phosphor with a blue light-emitting diode(440–470 nm).This study demonstrates that warm-white light-emitting diodes with high color rendition(i.e.,color rendering index.80)can be achieved based on single-phosphor,single-emitting-center conversion.Xufan Li John D Budai Feng Liu Jane Y Howe Jiahua Zhang Xiao-Jun Wang Zhanjun Gu Chengjun Sun Richard S Meltzer Zhengwei Pan 2013Light(Science & Applications)2013,2,1:11
2Tribological behaviour diagnostic and fault detection of mechanical seals based on acoustic emission measurements显示文摘Acoustic emission(AE) has been studied for monitoring the condition of mechanical seals by many researchers, however to the best knowledge of the authors, typical fault cases and their effects on tribological behaviour of mechanical seals have not yet been successfully investigated. In this paper, AE signatures from common faults of mechanical seals are studied in association with tribological behaviour of sealing gap to develop more reliable condition monitoring approaches. A purpose-built test rig was employed for recording AE signals from the mechanical seals under healthy and faulty conditions. The collected data was then processed using time domain and frequency domain analysis methods. The study has shown that AE signal parameters: root mean squared(RMS) along with AE spectrum, allows fault conditions including dry running, spring out and defective seal faces to be diagnosed under a wide range of operating conditions. However, when mechanical seals operate around their transition point, conventional signal processing methods may not allow a clear separation of the fault conditions from the healthy baseline. Therefore an auto-regressive(AR) model has been developed on recorded AE signals to classify different fault conditions of mechanical seals and satisfactory results have been perceived.Hossein TOWSYFYAN Fengshou GU Andrew D BALL Bo LIANG 2019Friction2019,7,6:10
3Trogocytosis of CD80 and CD86 by induced regulatory 7 cells显示文摘Peng Gu Julia Fang Gao Cheryl A D'Souza Aleksandra Kowalczyk Kuang-Yen Chou Li Zhang 2012Cellular & Molecular Immunology2012,9,2:7
42,4,6-trinitrobenzene sulfonic acid-induced chronic colitis with fibrosis and modulation of TGF-β1 signaling显示文摘AIM:To investigate whether targeting proteasome might reverse intestinal fibrosis in rats.METHODS:Chronic colitis was induced in rats by repeated administration of increasing dose of2,4,6-trinitrobenzene sulfonic acid(TNBS,15,30,45,60,60,60 mg)by rectal injection for 6 wk(from day0 to day 35),while control rats received the vehicle.TNBS+bortezomib(BTZ)rats received intraperitoneal injections of BTZ twice weekly(from day 37 to day44)at a dose of 25 mg/kg,whereas the control and TNBS groups received the same amount of the vehicle.Histologic scoring of inflammation and fibrosis was performed.Colonic production of transforming growth factor(TGF)-βwas measured by ELISA.Colon fibrosisrelated proteins such as phospho-p38,phosphoSMAD2/3,Akt and peroxisome proliferator activated receptorγ(PPARγ)were studied by western blot.Expression of the tight junction proteins,occludin and claudin-1,were assessed by Western blot.Colon proteasome activities(chymotrypsin-like and trypsinlike activities)were assessed.RESULTS:TNBS-treated rats had a higher colon weight/length ratio compared to control rats(P<0.01).Furthermore,fibrosis and inflammation scores were higher in TNBS-treated rats compared to control rats(P<0.01 for both).Colonic production of TGF-βproduction tended to be higher in TNBS-treated rats(P<0.06).Fibrosis-related proteins such as phospho-p38,phospho-SMAD2/3,and PPARγwere significantly higher in TNBS-treated rats compared to control rats(all P<0.05).TNBS rats had a higher expression of Akt compared to control rats(P<0.01).Tight junction proteins were modified by repeated TNBS challenge:colon occludin expression rose significantly(P<0.01),whereas claudin-1 expression fell(P<0.01).Bortezomib inhibition significantly decreased chymotrypsin-like activity(P<0.05),but had no significant effect on trypsin-like activity(P>0.05).In contrast,bortezomib had no effect on other studied parameters such as fibrosis score,TGF-βsignaling,or tight junction expression(P>0.05 for all).CONCLUSION:Rats with TNBS-induced chronic colitis exhibited colon fibrosis associated with higher TGF-βsignaling.Proteasome inhibition by bortezomib had no effect on fibrosis in our experimental conditions.Emilien Loeuillard Julien Bertrand Anni Herranen Chloé Melchior Charlène Guérin Mo?se Co?ffier Moutaz Aziz Pierre Déchelotte Guillaume Savoye Rachel Marion-Letellier 2014World Journal of Gastroenterology2014,20,48:4
5Enzymatic hydrolysis of proteins from yellowfin tuna ( Thunnus albacares ) wastes using Alcalase显示文摘F Guérard L Dufossé D De La Broise A Binet 2001Journal of Molecular Catalysis B Enzymatic2001,,4:3
6Introduction and constitutive expression of rice chitinase gene in bread wheat using biolistic bombardment and the bar gene as a selectable maker显示文摘Chen W P Gu X Liang G H Muthukrishnan S Chen P D Liu D J Giu B S 1998Theor Appl Genet1998,97,12:2
7Secular change of annual and interannual variability in the tropics during the past century 显示文摘Gu D F Phlander S G H 1995J Climate1995,8,4:2
8Panda X-III: Searching for neutrinoless double beta decay with high pressure ^(136)Xe gas time projection chambers显示文摘Searching for the neutrinoless double beta decay(NLDBD)is now regarded as the topmost promising technique to explore the nature of neutrinos after the discovery of neutrino masses in oscillation experiments.Panda X-III(particle and astrophysical xenon experiment III)will search for the NLDBD of136Xe at the China Jin Ping Underground Laboratory(CJPL).In the first phase of the experiment,a high pressure gas Time Projection Chamber(TPC)will contain 200 kg,90%136Xe enriched gas operated at10 bar.Fine pitch micro-pattern gas detector(Microbulk Micromegas)will be used at both ends of the TPC for the charge readout with a cathode in the middle.Charge signals can be used to reconstruct the electron tracks of the NLDBD events and provide good energy and spatial resolution.The detector will be immersed in a large water tank to ensure~5 m of water shielding in all directions.The second phase,a ton-scale experiment,will consist of five TPCs in the same water tank,with improved energy resolution and better control over backgrounds.Xun Chen Chang Bo Fu Javier Galan Karl Giboni Franco Giuliani Ling Hui Gu Ke Han Xiang Dong Ji Heng Lin Jiang Lai Liu Kai Xiang Ni Hiroki Kusano Xiang Xiang Ren Shao Bo Wang Yong Yang Dan Zhang Tao Zhang Li Zhao Xiang Ming Sun Shou Yang Hu Si Yu Jian Xing Long Li Xiao Mei Li Hao Liang Huan Qiao Zhang Ming Rui Zhao Jing Zhou Ya Jun Mao Hao Qiao Si Guang Wang Ying Yuan Meng Wang Amir N.Khan Neill Raper Jian Tang Wei Wang Jia Ning Dong Chang Qing Feng Cheng Li Jian Bei Liu Shu Bin Liu Xiao Lian Wang Dan Yang Zhu Juan F.Castel Susana Cebri'an Theopisti Dafni Javier G.Garza Igor G.Irastorza Francisco J.Iguaz Gloria Luz ′on Hector Mirallas Stephan Aune Eric Berthoumieux Yann Bedfer Denis Calvet Nicole d'Hose Alain Delbart Maria Diakaki Esther Ferrer-Ribas Andrea Ferrero Fabienne Kunne Damien Neyret Thomas Papaevangelou Franck Sabatie Maxence Vanderbroucke AnDi Tan Wick Haxton Yuan Mei Chinorat Kobdaj Yu-Peng Yan 2017Science China(Physics,Mechanics & Astronomy)2017,60,6:2
9In vitro antiplasmodial activity and cytotoxicity of 33 West African plants used for treatment of malaria显示文摘Guédé No?l Zirihi Lengo Mambu Frédéric Guédé-Guina Bernard Bodo Philippe Grellier 2005Journal of Ethnopharmacology2005,,3:2
10Antioxidant therapy with Salvia miltiorrhiza decreases plasma endothelin-1 and thromboxane B2 after cardiopulmonary bypass in patients with congenital heart disease显示文摘Xia Z Gu J Ansley D M 2003J Thorac Cardiovasc Surg2003,126,:1
11Hazards to space missions from microbial biofilms 显示文摘MITCHELL R GU J D ROMAN M 1996Biodeterior Biodegrad1996,133,:1
12Myasthenia gravis like syndrome induced by expression of inter feronγin the neuromuscular junction显示文摘 Wogensen L Calcutt NA 1995J Exp Med1995,181,2:1
13Free-form surface inspection techniques state of the art review显示文摘LI Y D GU P H 2004Computer-Aided Design2004,36,13:1
14Serum total and lipoprotein cholesterol levels and awareness,treatment,and control of hypercholester-olemia in China显示文摘He J Gu D Reynolds K 2004Circulation2004,110,4:1
15Geographic variations in the prevalence,awareness,treatment and control of hypertension in China显示文摘Reynolds K Gu D Muntner P 2003JHypertens2003,21,7:1
16Prevalence of the metabolic syndrome and overweight among adults in China显示文摘Gu D Reynolds K Wu X 2005Lancet2005,365,:1
17Activation of the subventricular zone in multiple sclerosis, evidence for early glial progenitors显示文摘Nait-Oumesmar B Picard-Riera N Kerninon C Decker L Sell- bean D H~glinger GU 2007Proc Natl Acad Sci U S A2007,104,46:1
18Synthesis of PMMA---ceramics nanocomposites by spray process 显示文摘ZHOU X D GU H C 2002Journal of Materials Science Letters2002,21,7:1
19Major causes of death among men and women in China显示文摘He J Gu D Wu X 2005N Engl J Med2005,353,11:1
20Biodeterioration of concrete by fungus fusarium显示文摘GU J D 1998International Biodeterioration and Biodegradation1998,41,2:1
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