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22篇 您的检索式:作者名="Renqiang Yang"
    题名 作者 年代 出处 被引量
1Incidence,mortality and survival of female breast cancer during 2003-2011 in Jiangsu province,China显示文摘Objective: To assess the incidence, mortality and survival status of female breast cancer in Jiangsu province of China.Methods: Population-based cancer registry data in Jiangsu province were collected during 2003-2011. Crude rates, age-specific rates, age-standardized rates and annual percent changes of incidence and mortality were calculated to describe the epidemiologic characteristics and time trends. Patients diagnosed from 2003 to 2005 were chosen for analyzing the survival status of breast cancer.Results: From 2003 to 2011, 17,605 females were diagnosed with breast cancer and 4,883 died in selected registry areas in Jiangsu province. The crude incidence rate was 25.18/100,000, and the age-standardized rates by Chinese population(ASRC) and by world population(ASRW) were 19.03/100,000 and 17.92/100,000, respectively. During the same period, the crude mortality rate was 6.98/100,000 and the ASRC and ASRW were 4.93/100,000 and 4.80/100,000, respectively. From 2003 to 2011, the incidence and mortality increased with annual percent change of 11.37% and 5.78%, respectively. For survival analysis, 1,392 patients in 7 areas were identified in 2003-2005 and finished 5 years of follow-up. Survival rates were found to decrease with survival years, the 5-year observed survival rate was 45.9% and the relative survival rate was 52.0%. We also found that the survival rate varied across the province, which was lower in the north and higher in the south of Jiangsu province.Conclusions: Breast cancer has become a significant public health problem in Jiangsu province and China. More resources should be invested in primary prevention, earlier diagnosis and better health services in order to increase survival rates among Chinese females.Xinran Yan Renqiang Han Jinyi Zhou Hao Yu Jie Yang Ming Wu 2016Chinese Journal of Cancer Research2016,28,3:8
2Photoluminescence and defect evolution of nano-ZnO thin films at low temperature annealing显示文摘Nano-ZnO thin films composed of nanoparticles with sizes of 10-16 nm on silicon substrates at low temperature were prepared by sol-gel method.By placing the nano-ZnO thin films at room temperature or annealing at 100°C in air for 10 h intermittently,within a total 70 h annealing time,the evolution of PL spectra of the nano-ZnO thin films were studied in detail.As the annealing time increases,the PL peaks shift from violet to blue and green bands.The PL peaks at violet and blue bands decrease with the annealing time,but the PL peaks at green band are opposite.The PL spectra are related to the defects in the nano-ZnO thin films.The PL peaks positioned at 430 nm are mainly related to defects of zinc interstatials(Zni),oxygen vacancies and(Vo);the ones at 420 nm to oxygen interstitials(Oi),Zinc vacancies(Vzn),Zni ;and the ones at 468 nm to Vzn,Zni,and charged oxygen interstatials(Vo+).The green luminescence is related to Oi,Vo and Zni.The evolutions of PL spectra and the defects are also related to the concentrations of Zn in the thin films,the thicknesses of the films and the annealing time.For the films with 0.5 M and 1.0 M Zn concentrations,after 20 h and 30 h annealing in air at 100°C,respectively,either placing them in air at room temperature or continuing anneal in air at 100°C,the PL spectra are stable.Under the low temperature annealing,Zni decreases with the annealing time,and Oi increases.Sufficient Oi favors to keep the nano-ZnO thin films stable.This result is important to nano-ZnO thin films as electron transport layers in inverted or tandem organic solar cells.YANG AiLing YANG Yun ZHANG ZhenZhen BAO XiChang YANG RenQiang LI ShunPin SUN Liang 2013Science China(Technological Sciences)2013,56,1:5
3Stepwise synthesis of cuprous oxide nanoparticles with adjustable structures and growth model显示文摘By stepwise adding of reducer N2H4·H2O,cuprous oxide(Cu2O)nanoparticles(NPs)with adjustable structures were synthesized.The features of Cu2O NPs were characterized by XRD,TEM and UV-Vis absorption spectra.When the reducer was added into the reactant system at one time,the sizes of the Cu2O NPs are in the range of 120–140 nm.Most Cu2O NPs are solid spheres.As the reducer was divided into two equal parts and stepwisely added,almost all the NPs are hollow spheres with good size(150–170 nm)distribution and dispersity.But when the reducer was divided into three or four equal parts and stepwisely added,the NPs are hollow spheres,core-shell structures or solid spheres,and the sizes distribution of the products is deteriorated.The effect of sodium hydrate(NaOH)was also probed.Addition of NaOH speeded up the nucleation and growth processes of Cu2O NPs.With the alkalinity increase,the shells of the hollow spheres become compact and the thicknesses of the shells increase,but the size distribution of the NPs is deteriorated.The absorption spectra of the Cu2O NPs are tunable.With the shell thicknesses increase,the absorption peaks have red shifts.An inside-outside growth model of Cu2O NPs was proposed to explain the results.The Cu2O single crystalline grains grow not only in the reactant solution,but also inside of the hollow nanospheres.The new Cu2O nanocrystallines can not only aggregate onto the shells of the nano hollow spheres,but also inside and outside of the hollow spheres,which leads to increasing the shell thicknesses of the hollow spheres,forming core-shell structures or small solid spheres of Cu2O NPs,respectively.YANG AiLing WANG YuJin LI ShunPin BAO XiChang YANG RenQiang 2014Science China(Technological Sciences)2014,57,11:3
4Assessment of water quality and identification of pollution sources of plateau lakes in Yunnan (China)显示文摘LI RENQIANG DONG MING ZHAO YANG 2007Journal of Environmental Quality2007,36,1:1
5Synthesis and optical and electroluminescent properties of novel conjugated copolymers derived from fluorene and benzoselenadiazole 显示文摘Yang Renqiang Tian Renyu Hou Qiong 2003Macromolecules2003,36,20:1
6Synthesis of Ag@Cu_2O core-shell metal-semiconductor nanoparticles and conversion to Ag@Cu core-shell bimetallic nanoparticles显示文摘Ag@Cu2O core-shell metal-semiconductor nanoparticles(NPs) were prepared by using solution phase strategy. It was found that Ag@Cu2O core-shell NPs were easily converted to Ag@Cu bimetallic core-shell NPs with the help of surfactant PVP and excessive reducer ascorbic acid in air at room temperature, which is a unique phenomenon. Varying volumes of Ag colloidal solutions were added into the reaction mixtures containing fixed initial concentrations of Cu2+ and PVP, Ag@Cu2O and Ag@Cu core-shell NPs with fixed core size but varying outer shell thicknesses could be obtained. The composites, structures, morphologies and extinction properties of Ag@Cu2O and Ag@Cu core-shell NPs were systematically characterized by XRD, TEM and extinction spectra. Both of these NPs show wide tunable optical properties. The extinction peaks could be shifted from 421 nm to 700 nm. FTIR results reveal that Cu+ ions on the surface of Cu2 O nanocrystalline coordinate with N and O atoms in PVP and further are reduced to metallic Cu by excessive ascorbic acid and then form a nucleation site on the surface of Cu2 O nanocrystalline. PVP binds onto a different site to proceed with the reduction until all the Cu sources in Cu2 O NPs are completely assumed. And the shell of Cu2 O is converted to Cu shell. The synthesis approach in this paper is simple and also a promising reference for synthesizing other core-shell NPs. Ag@Cu2O NPs can be easily converted to Ag@Cu NPs in air at room temperature, which is promising to be used in electronic devices.YANG AiLing LI ShunPin WANG YuJin WANG LeLe BAO XiChang YANG RenQiang 2015Science China(Technological Sciences)2015,58,5:1
7Label-free, dual- analyte electrochemical biosensors: A new class of molecular- electronic logic gates 显示文摘Xia Fan Zuo Xiaolei Yang Renqiang 2010Journal of the American Chemical Soci- ety2010,132,25:1
8Synthesis and optical and electroluminescent properties of novel conjugated copolymers derived from fluorene and henzoselenadiazole 显示文摘Yang Renqiang Tian Renyu Yang Wei 2003Macromoleeules2003,36,20:1
9Geochemistry of subducted metabasites exhumed from the Mariana forearc:Implications for Pacific seamount subduction显示文摘Seamounts on the drifting oceanic crust are inevitably carried by plate motions and eventually accreted or subducted.However,the geochemical signatures of the subducted seamounts and the significance of seamount subduction are not well constrained.Hundreds of seamounts have subducted beneath the Philippine Sea Plate following the westward subduction of the Pacific Plate since the Eocene(~52 Ma).The subducted oceanic crust and seamount materials can be exhumed from the mantle depth to the seafloor in the Mariana forearc region by serpentinite mud volcanoes,providing exceptional opportunities to directly study the subducted oceanic crust and seamounts.The International Ocean Discovery Program(IODP)expedition 366 has recovered a few metamorphosed mafic clasts exhumed from the Mariana forearc serpentinite mud volcanoes,e.g.,the Fantangis?a and Asùt Tesoru seamounts.These mafic clasts have tholeiitic to alkaline affinities with distinct trace elements and Nd-Hf isotopes characteristics,suggesting different provenances and mantle sources.The tholeiites from the Fantangisna Seamount have trace element characteristics typical of mid-ocean ridge basalt.The Pacific-type Hf-Nd isotopic compositions,combined with the greenschist metamorphism of these tholeiites further suggest that they came from the subducted Pacific oceanic crust.The alkali basalts-dolerites from the Fantangisna and Asùt Tesoru seamounts show ocean island basalt(OIB)-like geochemical characteristics.The OIB-like geochemical signatures and the low-grade metamorphism of these alkali basalts-dolerites suggest they came from subducted seamounts that originally formed in an intraplate setting on the Pacific Plate.The Pacific Plate origin of these metabasites suggests they were formed in the Early Cretaceous or earlier.Two types of OIBs have been recognized from alkali metabasites,one of which is geochemically similar to the HIMU-EMI-type OIBs from the West Pacific Seamount Province,and another is similar to the EMII-type OIBs from the Samoa Island in southern Pacific,with negative Nb-Ta-Ti anomalies and enriched Nd-Hf isotopes.Generally,these alkali metabasites are sourced from the heterogeneous mantle sources that are similar to the present South Pacific Isotopic and Thermal Anomaly.This study provides direct evidence for seamount subduction in the Mariana convergent margins.We suggest seamount subduction is significant to element cycling,mantle heterogeneity,and mantle oxidation in subduction zones.Jianghong Deng Lipeng Zhang He Liu Haiyang Liu Renqiang Liao Abdul Shakoor Mastoi Xiaoyong Yang Weidong Sun 2021Geoscience Frontiers2021,12,3:1
10Light-emitting copolymers based on fluorene and selenophene comparative studies with its sulfur analog:Poly (fluorene-co-thiophene)显示文摘Yang Renqiang Tian Renyu Hou Qiong 2005Journal of Polymer Science Part A:Polymer Chemistry2005,43,4:1
11Synthesis and optical and electroluminescenl properties of novel conjugated copolymers derived from fluorene and benzoselenadiazole显示文摘Yang Renqiang Tian Renyu Hou Qiong 2003Macromolecules2003,36,20:1
12En- hanced efficiency of polymer solar cells by incorporated Ag SiO2 core shell nanopartieles in the active layer 显示文摘Shen Wenfei Tang Jianguo Yang Renqiang 2014RSC Advances2014,4,9:1
13Fluorene - based eopolymers for color-stable blue Light emitting diodes 显示文摘Sun Mingliang Niu Qiaoli Yang Renqiang 2007European Polymer Journal2007,43,:1
14An innovative three-layer strategy in response to a quartan malaria outbreak among forest goers in Hainan Island,China:a retrospective study显示文摘Background:An outbreak of Plasmodium malariae infection among forest goers in Sanya City of Hainan Island,China was reported in 2015.In response to this outbreak,an innovative three-layer strategy(TLS)targeted forest goers was adapted based on the 1-3-7 approach.Main text:Key elements of TLS are:(i)The village with fve malaria cases and adjacent villages were set as the frst layer.All residents including forest goers were taken as the high-risk population(HRP).Active case detection(ACD)by blood smear microscopy and PCR was selected as the primary measure,and passive case detection(PCD)as complementary measure.One case was identifed under TLS implementation.(ii)The township with cases(Gaofeng Town)and the nearby towns were chosen as the second layer.Only forest goers were screened by ACD,while PCD as a routine screening method.7831 blood smears collected by ACD and PCD and tested with negative results.(iii)The city with cases(Sanya City)and others 12 counties/county-level cities were selected as the third layer.Malaria cases were monitored passively.A total of 77,555 blood slides were screened by PCD with zero positive sample.For each layer,the malaria vector mosquitoes were monitored using light traps,cattle-baited/human-bait traps.Anopheles minimus(dominant species),An.sinensis and An.dirus were captured.Vector control measures mainly include insecticide residual spraying and long-lasting insecticide nets.The capacity of clinicians,public health practitioners and laboratory technicians has been improved through training.During 2016‒2018,TLS and chemoprophylaxis were implemented in the same areas.In the frst layer,all residents were monitored by ACD,and malaria chemoprophylaxis were distributed,89.5%of forest goers were using chemoprophylaxis against malaria.The blood smears(3126 by ACD plus 1516 by PCD)were with zero positive results.Chemoprophylaxis and ACD were ofered to forest goers once a year,and PCD in residents as a complementary measure in the second and third layer,77.8%and 95.1%of forest goers received chemoprophylaxis.In each layer,vector surveillance and control of malaria and trainings for medical staf Conclusions:TLS was efective in blocking the outbreak by P.malariae among forest goers in Hainan in malaria elimination stage.However,whether it could prevent the malaria resurgence in the post-elimination phase needs to be further assessed.Yuchun Li Yingjuan Huang Renqiang Chen Weizhen Huang Huanzhi Xu Rongshen Ye Shaoling Huang Ji Zhen Xiaodan Wen Guoyi Wang Yong Liu Haishan Li Zaichun Zheng Jian Wang Guoshen Wang Chong Chen Wen Zeng Feng Meng Xiaoming Huang Guangze Wang Bing Yang Yan Chen 2022Infectious Diseases of Poverty2022,11,5:0
15Optoelectronic properties of fluorene-co-4,7-difuran-2,1,3-benzothiadiazole copolymers显示文摘Light-emitting and photovoltaic properties of copolymers(PFO-FBT) based on 9,9-dioctylfluorene and 4,7-difuran-2,1,3-benzothiadiazole(FBT) units were investigated.The copolymers show two absorbance peaks at around 382 nm and 530 nm,respectively.The relative absorbance at around 530 nm of the PFO-FBT copolymers increases with the increasing FBT content.The EL emissions are red-shifted from 611 nm to 702 nm by increasing the FBT content in the copolymer.The highest EL external quantum efficiency achieved with the device configuration of ITO/PEDOT/PVK/PFO-FBT0.1/Ba/Al is 2.32% with the luminance of 441.3 cd/m2 at a current density of 33 mA/cm2.Efficient energy transfer due to exciton trapping on low band-gap FBT sites was observed.The bulk-heterojunction photovoltaic cell used PFO-FBT50 copolymer as the electron donor and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester(PCBM) as the electron acceptor shows an energy conversion efficiency of 1.13% with open-circuit voltage(Voc) of 0.85 V and short-circuit current density(Jsc) of 3.39 mA/cm2 under AM 1.5 solar simulator(100 mW/cm2),and the edge of the spectral photoresponse is at ~750 nm.Luo Jie Yang RenQiang Yang Wei Cao Yong 2010Science China Chemistry2010,53,3:0
16High open-circuit voltage solution-processed organic solar cells based on a star-shaped small molecule end-capped with a new rhodanine derivative显示文摘A new star-shaped small molecule named TCNR3TTPA,with a triphenylamine(TPA)unit as the central building block and2-(1,1-dicyanomethylene)-3-octyl rhodanine(CNR)as the end-capped group,has been designed and synthesized.TCNR3TTPA showed a deep highest occupied molecular orbital(HOMO)energy level( 5.60 e V)and broad absorption.The solution-processed bulk heterojunction(BHJ)solar cells based on TCNR3TTPA:PC61BM(1:1,w/w)exhibited a high open-circuit voltage(Voc)of 0.99 V,a short-circuit current density(Jsc)of 5.76 m A/cm2,and a power conversion efficiency(PCE)of 2.50%under the illumination of AM 1.5 G,100 m W/cm2.The high Voc is ascribed to the strong electron-with-drawing ability of the end-capped 2-(1,1-dicyanomethylene)-3-octyl rhodanine group.These results demonstrated that the Voc of small-molecule organic solar cells could be increased by introducing a strong electron-withdrawing end-capped block,and that this is an effective strategy to design high-performance small molecules for organic solar cells.Yuanhang Zhou Weichao Chen Zhengkun Du Dangqiang Zhu Dan Ouyang Liangliang Han Renqiang Yang 2015Science China Chemistry2015,58,2:0
17Low-bandgap polymers with quinoid unit as π bridge for high-performance solar cells显示文摘To construct efficient low band gap polymers,increasing the Quinone structure of the polymer backbone could be one desirable strategy.In this work,two D–Q–A–Q polymers P1 and P2 were designed and synthesized with thiophenopyrrole diketone(TPD)and benzothiadiazole(BT)unit as the core and ester linked thieno[3,4-b]thiophene(TT)segment as π-bridging,and the main focus is to make a comparative analysis of different cores in the influence of the optical,electrochemical,photochemical and morphological properties.Compared with the reported PBDTTEH–TBTTHD-i,P1 exhibited the decreased HOMO energy level of-5.38 e V and lower bandgap of 1.48 e V.Furthermore,when replaced with BT core,P2 showed a red-shifted absorption profile of polymer but with up-shifted HOMO energy level.When fabricated the photovoltaic devices in conventional structure,just as expected,the introduction of ester substituent made an obvious increase of VOC from 0.63 to 0.74 V for P1.Besides,due to the deep HOMO energy level,higher hole mobility and excellent phase separation with PC71 BM,a superior photovoltaic performance(PCE=7.13%)was obtained with a short-circuit current density(JSC)of 14.9 m A/cm^2,significantly higher than that of P2(PCE=2.23%).Generally,this study highlights that the strategy of inserting quinoid moieties into D–A polymers could be optional in LBG-polymers design and presents the importance and comparison of potentially competent core groups.Bilal Shahid Xiyue Yuan Qian Wang Di Zhou Ergang Wang Xichang Bao Dangqiang Zhu Renqiang Yang 2020Journal of Energy Chemistry2020,29,1:0
18A Randomized Controlled Trial of a Biodegradable Polymer,Microcrystalline Sirolimus-Eluting Stent(MiStent)versus Another Biodegradable Polymer Sirolimus-Eluting Stent(TIVOLI):The DESSOLVE-C Trial显示文摘Objective::Data comparing the outcomes of MiStent(Micell Technologies,Durham,North Carolina,USA)microcrystalline biodegradable polymer(BP)drug-eluting stent(DES)and those of another post-marketing BP-DES,TIVOLI(EssenTech,Beijing,China)are rare.This study sought to compare the angiographic efficacy and clinical outcomes of the microcrystalline BP sirolimus-eluting stent(SES)system MiStent and those of TIVOLI BP-SES.Methods::The DESSOLVE-C trial was a prospective,single-blinded,multicenter,randomized trial(NCT02448524),which randomly assigned patients with de novo coronary lesions to receive MiStent or TIVOLI BP-SES by a 1:1 ratio.The primary endpoint was a non-inferiority comparison of in-stent late lumen loss(LLL)by quantitative coronary angiography at 9 months.The secondary endpoint was device-related clinical cardiovascular composite events(target lesion failure(TLF),composite of cardiac death,target vessel myocardial infarction(MI),and clinically driven target lesion revascularization)and 1-year outcomes.Results::A total of 428 patients(216 patients in the MiStent group and 212 patients in the TIVOLI group)were enrolled and included in an intention-to-treat analysis.MiStent was not only non-inferior but superior to TIVOLI for in-stent LLL at 9 months((0.23±0.37)mm vs.(0.34±0.48)mm,P for non-inferiority<0.001,P for superiority=0.02).Although without significant difference,the rate of TLF in MiStent was quantitatively lower than that in TIVOLI(3.70%vs.6.60%;P=0.17).Conclusion::Compared with TIVOLI BP-SES,the MiStent system was superior in in-stent LLL at 9 months and had a comparable clinical benefit at 1 year in de novo coronary lesions.Bin Wang Sicong Ma Zhiyong Wang Li Zhang Hanjun Pei Yang Zheng Yuejin Yang Zheng Zhang Xinqun Hu Ziwen Ren Feng Zhang Changqian Wang Renqiang Yang Zhiming Yang Yuexi Wang Guosheng Fu Yu Cao Zuyi Yuan Kai Xu Xin Zhao Bo Xu Miaohan Qiu Quanmin Jing 2023Cardiology Discovery2023,3,1:0
19Fabrication of Ag@Cu2O core-shell metal-semiconductor nanoparticles and high efficiency photocatalysis under visible- near-infrared light irradiation显示文摘Lele Wang Ailing Yang Xichang Bao Renqiang Yang 2015纳米科技2015,12,5:0
20Advances in the Researches of the Middle and Upper Atmosphere in China显示文摘In this paper we summarize the research results by Chinese scientists in 2016–2018. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches associated with groundbased observation capability development, dynamical processes, and properties of circulation and chemistryclimate coupling of the middle atmospheric layers.CHEN Zeyu CHEN Hongbin XU Jiyao L Daren ZHANG Shaodong XUE Xianghui TIAN Wenshou LIU Renqiang CHEN Wen HU Yongyun WANG Rui HU Dingzhu HU Xiong YANG Guotao GONG Yun LU Gaopeng 2018空间科学学报2018,38,5:0
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