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46篇 您的检索式:作者名="KeLi Wang"
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1Variation of head and facial morphological characteristics with increased age of Han in Southern China显示文摘We investigated 13940 (6735 male, 7250 female) adult head and facial physical attributes from 19 different Han ethnic groups in 10 southern-China provinces, and calculated 12 head and facial indexes. Indexes were used to analyze the variation of head and facial morphological characteristics with increased age. Results showed that as age increases: (1) Head breadth, minimum frontal breadth, face breadth, interocular breadth, external biocular breadth, lip height, lip thickness, head circumference, auricular height, length-breadth head index, length-height head index, and lip-index values decline significantly in a linear fashion. (2) Nose breadth, mouth breadth, morphological facial height, upper-lip height, physiognomic ear length, physiognomic ear breadth, visor skin-fold, and vertical head-facial index values significantly increase in a linear fashion.LI YongLan ZHENG LianBin YU KeLi LU ShunHua ZHANG XingHua LI YuLing WANG Yang XUE Hong DENG Wei 2013Chinese Science Bulletin2013,58,4:20
2Effect of Altitude and Latitude on Surface Air Temperature across the Qinghai-Tibet Plateau显示文摘The correlation between mean surface air temperature and altitude is analyzed in this paper based on the annual and monthly mean surface air temperature data from 106 weather stations over the period 1961-2003 across the Qinghai-Tibet Plateau.The results show that temperature variations not only depend on altitude but also latitude,and there is a gradual decrease in temperature with the increasing altitude and latitude.The overall trend for the vertical temperature lapse rate for the whole plateau is approximately linear.Three methods,namely multivariate composite analysis,simple correlation and traditional stepwise regression,were applied to analyze these three correlations.The results assessed with the first method are well matched to those with the latter two methods.The apparent mean annual near-surface lapse rate is-4.8 °C /km and the latitudinal effect is-0.87 °C /?latitude.In summer,the altitude influences the temperature variations more significantly with a July lapse rate of-4.3°C /km and the effect of latitude is only-0.28°C /latitude.In winter,the reverse happens.The temperature decrease is mainly due to the increase in latitude.The mean January lapse rate is-5.0°C /km,while the effect of latitude is-1.51°C /?latitude.Comparative analysis for pairs of adjacent stations shows that at a small spatial scale the difference in altitude is the dominant factor affecting differences in mean annual near-surface air temperature,aided to some extent by differences of latitude.In contrast,the lapse rate in a small area is greater than the overall mean value for the Qinghai-Tibet Plateau (5 to 13°C /km).An increasing trend has been detected for the surface lapse rate with increases in altitude.The temperature difference has obvious seasonal variations,and the trends for the southern group of stations (south of 33? latitude) and for the more northerly group are opposite,mainly because of the differences in seasonal variation at low altitudes.For yearly changes,the temperature for high-altitude stations occurs earlier clearly.Temperature datasets at high altitude stations are well-correlated,and those in Nanjing were lagged for 1 year but less for contemporaneous correlations.The slope of linear trendline of temperature change for available years is clearly related to altitude,and the amplitude of temperature variation is enlarged by high altitude.The change effect in near-surface lapse rate at the varying altitude is approximately 1.0°C /km on the rate of warming over a hundred-year period.WANG Keli SUN Jia CHENG Guodong JIANG Hao 2011Journal of Mountain Science2011,8,6:7
3The westerly fluctuation and water vapor transport over the Qilian-Heihe valley显示文摘The westerly fluctuation and the atmospheric water vapor transport over the Qilian-Heihe valley are analyzed and the results show that, in the water vapor transport stream field from Jun to September, this valley is in the westerly stream and the water vapor comes from westerlies water transport via the Black Sea and the Caspian Sea. The net water vapor transport is less net import and different from most areas of the northwest China. The interannual changes in water vapor transport over the valley arise from the westerly fluctuation, and have a positive relationship to the interannual changes in westerly wind speed. The cold air actions from the Mongol low pressure are the primary system that controls the westerly water vapor transport. Its action chain is that, the Mongol low pressure is strengthened → the circulation meridionality will be increased → the cold air will move southwards → the westerly will be stronger → the wind convergence of direction and speed will be stronger → the water vapor convergence transport will be increased → the local water vapor content will be increased. The interannual changes in atmospheric water vapor transport over the valley rely mainly on the convergence transport, but the effect of advection transport is less. The interannual changes of strong or weak westerly affect mainly the convergence transport, and then make the atmospheric water vapor net transport increase or decrease over the Qilian-Heihe valley.WANG Keli CHENG Guodong XIAO Honglang JIANG Hao 2004Science China Earth Sciences2004,47,z1:6
4Human CD39hi regulatory T cells present stronger stability and function under inflammatory conditions显示文摘Jian Gu Xuhao Ni Xiongxiong Pan Hao Lu Yunjie Lu Jie Zhao Song Guo Zheng Keli L Hippen Xuehao Wang Ling Lu 2017Cellular & Molecular Immunology2017,14,6:6
5Effectiveness of Catch-Up Vaccinations after COVID-19 Containment--China,2020显示文摘Introduction:In the early stages of the coronavirus disease 2019(COVID-19)epidemic in China,the highest level of public health emergency response(Level 1 Response)was launched in all province-level administrative divisions(PLADs)across the country.Provision of vaccination services was selectively suspended due to the physical distancing and gathering restrictions required of Level 1 Response.The purpose of this paper is to evaluate the impact of COVID-19 on vaccination services and the effectiveness of selective vaccination service suspension and catch-up vaccinations in China.Methods:Vaccine doses administered,routine vaccination coverage levels,catch-up vaccine doses administered,and coverage levels after the catch-up campaign were determined from individual vaccination records in sampled clinics,standard routine immunization administrative coverage reports,and catch-up vaccination activity reports submitted by PLADs between October 2019 and October 2020.Results:National Immunization Program(NIP)and non-NIP vaccine doses administered in sampled clinics decreased by 80% and 90%,respectively,compared with doses administered before the COVID-19 pandemic.Coverage with the birth dose of hepatitis B vaccine(HepB1)and the Bacillus Calmette-Guérin vaccine(BCG)—two vaccinations recommended to continue throughout the epidemic due to their timecritical nature—were maintained at over 85%,while coverage of other NIP vaccines decreased to below 60%by February 2020.Catch-up vaccination coverage of the 29 PLADs,excluding Xinjiang and Xizang(Tibet),began in April 2020 and exceeded 90%;Hubei catch-up coverage was 95% by October 2020.Conclusions and Implications for Public Health Practice:The COVID-19 pandemic had a great impact on China’s vaccination services.During the epidemic and time of local transmission of the coronavirus,HepB1,BCG,rabies vaccine for postexposure prophylaxis,and tetanus antitoxin(TAT)for wound prophylaxis were maintained at high levels.Of the 69 million vaccine doses postponed during the time of local transmission of the coronavirus,94% were administered in the catch-up campaign.China’s pandemic immunization practices may provide evidence for other countries’immunization programs.Jing Wu Wenzhou Yu Lei Cao Lingsheng Cao Lance Rodewald Jiakai Ye Yifan Song Li Li Xiaoxue Liu Ning Wen Fuzhen Wang Lixin Hao Yixing Li Hui Zheng Keli Li Chao Ma Dan Wu Yanmin Liu Guomin Zhang Zhijie An Huaqing Wang Zundong Yin 2020China CDC weekly2020,2,50:6
6Construction and application of oligo-based FISH karyotype of Haynaldia villosa显示文摘Haynaldia villosa(L.)Schur(syn.Dasypyrum villosum(L.)Candargy)(2n=14,genome VV),a wild relative of wheat,is an important gene pool for improving wheat quality and disease resistance.Several genes found in H.villosa have been transferred into wheat to improve wheat resistance by the development of alien translocation lines.The seed storage protein loci on chromosomeHaojie Sun Jingjing Song Jia Lei Xinying Song Keli Dai Jin Xiao Chunxia Yuan Shengmin An Haiyan Wang Xiue Wang 2018Journal of Genetics and Genomics2018,45,8:4
7Wearable energy harvesters generating electricity from low-frequency human limb movement显示文摘A wearable energy harvester technology is developed for generating electricity from the movement of human joints.A micro-electroplated ferromagnetic nickel cantilever is integrated with a piezoelectric element and bonded on a flexible substrate.Based on the magnetic interaction between the magnetized cantilever and a magnet on the substrate,a novel vertical-vibration frequency-up-conversion(FUC)structure is formed to generate stable amounts of electric energy per cycle from the horizontal substrate stretching/rebounding.The two ends of the flexible substrate are attached on both sides of a limb joint to transform joint rotation into substrate stretching.During limb movement,the flexible substrate is horizontally stretched and rebounded,causing the cantilever to vertically release from and return to the magnet,thereby exciting the piezoelectric cantilever into resonant generation.Since the horizontal lowfrequency limb movement is perpendicular to the vertical high-frequency resonance,the stretch has little influence on the resonance of the cantilever.Thus the generated energy is always stable within a wide frequency range of limb movements.The performance of the novel harvester is experimentally verified using a stretching/rebounding movement cycle,where the cycle corresponds to the frequency range of 0.5–5.0 Hz.Within one stretching/rebounding movement cycle,the generated electric energy is stable in the approximate range of 0.56–0.69μJ for the whole frequency range.Two flexible harvesters are worn on the human elbow and knee for a body kinetic energy harvesting test.Considerable power can always be generated under typical low-frequency limb movements,such as squatting,walking,jogging,and fast running,where the peak-to-peak generated voltages are always approximately 4.0 V.Additionally,energy harvesting under two-directional area stretching is also realized by adjusting the FUC structure layout.The flexible-substrate harvester is promising for various wearable applications.Keli Li Qisheng He Jiachou Wang Zhiguo Zhou Xinxin Li 2018Microsystems & Nanoengineering2018,4,1:3
8Progress in octahedral spherical hohlraum study显示文摘In this paper,we give a review of our theoretical and experimental progress in octahedral spherical hohlraum study.From our theoretical study,the octahedral spherical hohlraums with 6 Laser Entrance Holes(LEHs)of octahedral symmetry have robust high symmetry during the capsule implosion at hohlraum-to-capsule radius ratio larger than 3.7.In addition,the octahedral spherical hohlraums also have potential superiority on low backscattering without supplementary technology.We studied the laser arrangement and constraints of the octahedral spherical hohlraums,and gave a design on the laser arrangement for ignition octahedral hohlraums.As a result,the injection angle of laser beams of 50°-60°was proposed as the optimum candidate range for the octahedral spherical hohlraums.We proposed a novel octahedral spherical hohlraum with cylindrical LEHs and LEH shields,in order to increase the laser coupling efficiency and improve the capsule symmetry and to mitigate the influence of the wall blowoff on laser transport.We studied on the sensitivity of the octahedral spherical hohlraums to random errors and compared the sensitivity among the octahedral spherical hohlraums,the rugby hohlraums and the cylindrical hohlraums,and the results show that the octahedral spherical hohlraums are robust to these random errors while the cylindrical hohlraums are the most sensitive.Up till to now,we have carried out three experiments on the spherical hohlraum with 2 LEHs on Shenguang(SG)laser facilities,including demonstration of improving laser transport by using the cylindrical LEHs in the spherical hohlraums,spherical hohlraum energetics on the SGIII prototype laser facility,and comparisons of laser plasma instabilities between the spherical hohlraums and the cylindrical hohlraums on the SGIII laser facility.Ke Lan Jie Liu Zhichao Li Xufei Xie Wenyi Huo Yaohua Chen Guoli Ren Chunyang Zheng Dong Yang Sanwei Li Zhiwen Yang Liang Guo Shu Li Mingyu Zhang Xiaoying Han Chuanlei Zhai Lifei Hou Yukun Li Keli Deng Zheng Yuan Xiayu Zhan Feng Wang Guanghui Yuan Haijun Zhang Bobin Jiang Lizhen Huang Wei Zhang Kai Du Runchang Zhao Ping Li Wei Wang Jingqin Su Xuewei Deng Dongxia Hu Wei Zhou Huaiting Jia Yongkun Ding Wanguo Zheng Xiantu He 2016Matter and Radiation at Extremes2016,1,1:2
9胃肿瘤CT灌注成像的临床研究(英文)显示文摘Objection:The purpose of this study is preliminarily to discuss stomach perfusion imaging technique with Multi-slice CT and its clinical application value in stomach neoplasm.Methods:Fifteen patients with known stomach neoplasm performed perfusion imaging with 4 or 16 slice CT.Performing perfusion imaging in central slice of neoplasm,using CT cine scan,slice thick 10 mm/2i;with high pressure syringe,injecting quickly from right elbow-front vein,dosage 45-50 mL,injec-tion rate 3.5-4.0 mL/s,scanning delay time 5 s,scanning total time 45 s.We performed perfusion CT post-processing using pancreatic mode of perfusion CT software.Blood flow(BF),blood volume(BV),mean transit time(MTT),and permeability surface(PS) of gastric wall and tumor were computed for every case.Results:BF,BV,MTT and PS of gastric tumor were 116.68 ± 90.09 mL/(min·100 g),9.57 ± 8.12 mL/100 g,10.07 ± 7.74 s,20.78 ± 19.68 mL/(min·100g),respectively.The P values for each CT perfusion parameters between gastric tumor and normal gastric wall were 0.001,0.021,0.155 and 0.031,respectively.Conclusion:Perfusion CT can provide hemodynamics of gastric tumors and play a key role in the diagnosis of gastric tumors.It's clinical application prospect will be fully broad.Zhiyong Li Ying Ge Jinghong Liu Keli Wang Jianlin Wu 2009The Chinese-German Journal of Clinical Oncology2009,8,4:2
10Doped all-inorganic cesium zirconium halide perovskites with high-efficiency and tunable emission显示文摘Doping enables manipulation of both the electrical and optical properties of halide perovskites.Herein,we incorporated Te^(4+) into Cs_(2)ZrCl_(6) single crystal,simultaneously preserving the vacancy-ordered structure,to obtain an efficient yellow-emitting perovskite with a near-unity photoluminescence quantum yield(PLQY≈97.6%).Te^(4+) doping modifies the hue and emission color of pristine Cs_(2)ZrCl_(6),generates new absorption channels,and successfully extends the excitation energy from<280 nm to 360-450 nm range.Detailed spectral characterizations,including ultrafast femtosecond transient absorption measurements,reveal that the bright yellow light is derived from triplet self-trapped excitons.Moreover,further tuning doping concentration enables Te-doped Cs_(2)ZrCl_(6) single crystals to exhibit efficient warm white light emission.This work provides a new perspective for the development and design of stable lead-free perovskites with highly efficient luminescence.Pengfei Cheng Daoyuan Zheng Lu Feng Yuefeng Liu Junxue Liu Juntao Li Yang Yang Guoxiong Wang Keli Han 2022Journal of Energy Chemistry2022,31,2:2
11Triblock copolymer-assisted construction of 20 nm-sized ytterbium-doped TiO_2 hollow nanostructures for enhanced solar energy utilization efficiency显示文摘Rare-earth doped titania single-crystalline hollow nanoparticles of 20 nm are constructed via a simple sol-gel process. Amphiphilic ABA tri-block copolymers played a key role in assisting the formation of hollow structure, for which a hollow nanostructure growth mechanism is proposed. By introducing rare earth into the synthesis process, the as-prepared nanoparticles exhibit near-infrared light absorption properties. Photo-decomposition efficiency of Orange II azo dye can be successfully evaluated when using Yb3+-doped Ti O2 hollow nanoparticles as photocatalysts; it is more than two times higher than the pure Ti O2 hollow nanoparticles. The hollow nanostructured Yb3+-doped Ti O2 samples are exploited as photoanodes in N719- sensitized solar cells and prove able to improve the photoelectric conversion efficiency by measuring the solar cell parameters of dye-sensitized solar cells(DSSCs) under simulative sunlight.Lin Cheng Xuefeng Xu Yuyan Fang Yan Li Jiaxi Wang Guojia Wan Xueying Ge Liangjie Yuan Keli Zhang Lei Liao Quan Yuan 2015Science China Chemistry2015,58,5:2
12An effective dynamic coarse model for optimization design of LTCC RF circuits with aggressive space mapping 显示文摘Wu Keli Zhao Yongjiu Wang Jie 2004IEEE Transactions on Microwave Theory and Techniques2004,52,1:1
13Corrigendum to“First demonstration of improving laser propagation inside the spherical hohlraums by using the cylindrical laser entrance hole”[Matter Radiation Extremes 1(1)(2016)2-7]显示文摘Corrigendum Text:On page 2 of this letter,there is a misprint in the unit.The unit of the geometrical dimension of the spherical hohlraums on this page should always be“mm”rather than“mm”,i.e.in the second paragraph,“…with 800 J per beam at 0.35 mm…”should be“…with 800 J per beam at 0.35 mm…”,“The slit of 400 mm width is parallel…”should be“The slit of 400 mm width is parallel…”,“The laser focal diameter is about 500 mm…”should be“The laser focal diameter is about 500 mm…”;in the third paragraph,“…we take 850 mm as the radius…”should be“…we take 850 mm as the radius…”,“The LEH radius R_(L) is 400 mm…”should be“The LEH radius R_(L) is 400 mm…”,“…the radius of the cylindrical LEH outer ring is taken as 1.5 R_(L)=600 mm”should be“…the radius of the cylindrical LEH outer ring is taken as 1.5 R_(L)=600 mm”.This mistake does not affect any of the main results of the original letter.Wenyi Huo Zhichao Li Dong Yang Ke Lan Jie Liu Guoli Ren Sanwei Li Zhiwen Yang Liang Guo Lifei Hou Xuefei Xie Yukun Li Keli Deng Zheng Yuan Xiayu Zhan Guanghui Yuan Haijun Zhang Baibin Jiang Lizhen Huang Kai Du Runchang Zhao Ping Li Wei Wang Jingqin Su Yongkun Ding Xiantu He Weiyan Zhang 2016Matter and Radiation at Extremes2016,1,2:1
14Synthesis and thermal decomposition of zinc phthalate显示文摘Jutang Sun Liangjie Yuan Keli Zhang Dongli Wang 2000Thermochimica Acta2000,343,:1
15Clinical value of multi-slice helical CT angiography in diagnosis of cerebral vascular diseases显示文摘Objective: To evaluate the clinical value of multi-slice helical CT angiography (MSCTA) in diagnosis of cerebral vascular diseases. Methods: 52 patients with cerebral vascular diseases were examined with GE Light Speed 4-slice and 16-slice helical CT. Pitch: 0.5–3, slice thickness: 0.625–1.25 mm, adult injection dosage: 90–100 mL, children injection dos- age: 2 mL/kg, injection rate: 2.5–4.0 mL/s, delay time: 15–22 s. Intelligent track scan (Smart prep Rx) were adopted in parts of these cases. Three-dimensional cerebral vascular images were processed at ADW 3.1 and ADW 4.2 workstation. Results: MSCTA could clearly display spacious anatomic details of cerebral aneurysm, including its origin, size, neck width, and trend etc. MSCTA results of 19 cases were consistent with those of operations. The diameter of the smallest cerebral aneurysm shown in our research was about 3 mm. As a non-invasive examination, MSCTA could also be applied in post-operational evaluation of cerebral aneurysm by observing the location of silver clip and the distant vessels. Besides, MSCTA could be used to diagnose arteriovenous malformation and moyamoya disease. Of all the three-dimentional imaging methods, volume rendering (VR) is the best means to display the cerebral vascular diseases. Conclusion: As a non-invasive examination, MSCTA plays an important role in detection, pre-operational and post-operational evaluation of cerebral vascular diseases.Dianxiu Ning Zhiyong Li Keli Wang Yanwei Miao Jianlin Wu Zhijin Lang 2006The Chinese-German Journal of Clinical Oncology2006,5,5:1
16Advances in research of land surface evapotranspiration at home and abroad显示文摘Land surface evapotranspiration (ET) is an important part of the hydrologic cycle and energy balances.With the development of remote sensing technology,research on monitoring and estimating of evapotranspiration has made important progress.This paper summarizes advances in measuring and estimating regional evapotranspiration at home and abroad based on traditional methods and remote sensing.This summary includes such methods as Bowen,Gradient,Penman-Monteith,Water Balance,Eddy Correlation,SPAC,Energy Balance and Remote Sensing.Also,the evapotranspiration achievements in the Heihe River Basin are also discussed.Finally,the existing problems in regional evapotranspiration research and future development prospects are also discussed at the conclusion of this paper.XinPing Luo KeLi Wang Hao Jiang Jia Sun JuanJuan Xu QingLiang Zhu ZhaoGuo Li 2010Research in Cold and Arid Regions2010,2,2:1
17The Cost of Coverage: Rural Health Insurance in China 显示文摘Lennart Bogg Dong Hengjin Wang Keli 1996Health Policy And Planning1996,,11:1
18Effects of sediment size on transport capacity of overland flow on steep slopes显示文摘Zhang Guanghui Wang Lili Tang Keli 2011Hydrological Sciences Journal2011,56,7:1
19On subtrees oftrees显示文摘Székely L A Wang Hua 2005Advances in Applied Mathematics2005,34,1:1
20The variation of summer monsoon precipitation in central China since the last deglaciation 显示文摘Cai Y J Tan L C Cheng H An Z S Edwards R L Kely M J Kong X G Wang X F 2010Earth and Planetary Science Letters2010,291,:1
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