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23篇 您的检索式:作者名="Hanming Li"
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1Broadband achromatic metalens in terahertz regime显示文摘Achromatic focusing is essential for broadband operation, which has recently been realised from visible to infrared wavelengths using a metasurface. Similarly, multi-terahertz functional devices can be encoded in a desired metasurface phase profile. However, metalenses suffer from larger chromatic aberrations because of the intrinsic dispersion of each unit element. Here, we propose an achromatic metalens with C-shaped unit elements working from 0.3 to 0.8 THz with a bandwidth of approximately 91% over the centre frequency. The designed metalens possesses a high working efficiency of more than 68% at the peak and a relatively high numerical aperture of 0.385. We further demonstrate the robustness of our Cshaped metalens, considering lateral shape deformations and deviations in the etching depth. Our metalens design opens an avenue for future applications of terahertz meta-devices in spectroscopy, time-offlight tomography and hyperspectral imaging systems.Qingqing Cheng Meilin Ma Dong Yu Zhixiong Shen Jingya Xie Juncheng Wang Nianxi Xu Hanming Guo Wei Hu Shuming Wang Tao Li Songlin Zhuang 2019Science Bulletin2019,64,20:16
2Atomistic Surface Passivation of CH_(3)NH_(3)PbI_(3) Perovskite Single Crystals for Highly Sensitive Coplanar-Structure X-Ray Detectors显示文摘Organic-inorganic halide perovskites(OIHPs)are recognized as the promising next-generation X-ray detection materials.However,the device performance is largely limited by the ion migration issue of OIHPs.Here,we reported a simple atomistic surface passivation strategy with methylammonium iodide(MAI)to remarkably increase the ion migration activation energy of CH_(3)NH_(3)PbI_(3)single crystals.The amount of MAI deposited on the crystal surface is finely regulated by a self-assemble process to effectively suppress the metallic lead defects,while not introducing extra mobile ions,which results in significantly improved dark current stability of the coplanar-structure devices under a large electric field of 100Vmm^(-1).The X-ray detectors hence exhibit a record-high sensitivity above 700,000μC Gy^(-1)_(air) cm^(-2)under continuum X-ray irradiation with energy up to 50 keV,which enables an ultralow X-ray detection limit down to 1.5 nGy_(air)s^(-1).Our findings will allow for the dramatically reduced X-ray exposure of human bodies in medical imaging applications.Yilong Song Liqi Li Weihui Bi Mingwei Hao Yifei Kang Anran Wang Zisheng Wang Hanming Li Xiaohui Li Yanjun Fang Deren Yang Qingfeng Dong 2020Research2020,,1:5
3Relationship between Carbon Isotope Discrimination and Grain Yield in Spring Wheat Cultivated under Different Water Regimes显示文摘在 C 植物,碳同位素辨别() 为谷物产量作为一个间接选择标准被建议了。报导关联在之间和不管多么的谷物产量,根据分析机关或织物高度不同,采样的舞台,和环境和水政体。在处于西北墨西哥的干燥条件在二个连续季节期间在春小麦执行的第一个实验( Ciudad Obregon , Sonora ),不同水处理被使用,相应于对世界范围的春小麦可得到的主要的水政体,并且在不同机关和谷物产量的价值之间的关系被检验。在终端下面(开花期以后) 水应力,谷物产量断然与被联系在在成熟的谷物并且在在开花期的叶,证实以前在地中海环境下面获得的结果。在下面(开花期前) 早,水应力和剩余潮湿强调,在谷物和收益之间的协会更弱并且高度取决于在播种在土壤存储的水的数量。没有关联被发现在之间,谷物在最佳的灌溉下面让步。在之间的关系和谷物产量也在 Ningxia 区域(北中国) 在 20 面包小麦栽培变种在二个连续季节期间被学习,由冬季干旱(开花期前水压力) 描绘了。小麦在另外一个在二个地点(Guyuan 和 Pengyang ) 并且在灌溉条件下面在雨美联储条件下面被种二(银川和 Huinong ) 。在 Huinong,庄稼也被暴露腌应力。高度重要的积极协会越过环境在叶和谷物和谷物收益之间被发现。在生长周期,在土壤的盐的存在,和在开花期前的灌溉的出现期间的降雨的在之间的关系和水的数量在播种在土壤存储了的在高度取决于的环境以内的产量,数量和分发。这二个实验证实了价值作为一种间接选择,为在开花期以后的水下面的产量和一个 phenotyping 工具的标准强调(包括的有限灌溉) 。Xing Xu Hanming Yuan Shuhua Li Richard Trethowan Philippe Monneveux 2007Journal of Integrative Plant Biology2007,49,10:3
4Catalytic hydrogenation of aromatic nitro compounds by functionalized ionic liquids-stabilized nickel nanoparticles in aqueous phase:The influence of anions显示文摘Two kinds of nickel nanoparticles (NPs) well-dispersed in aqueous phase have been conveniently prepared by reducing nickel(II) salt with hydrazine in the presence of amino group (-NH2) functionalized ionic liquids:1-(3-aminopropyl)-2,3-dimethylimidazolium bromide ([AMMIM][Br]) and 1-(3-aminopropyl)-2,3-dimethylimidazolium acetate ([AMMIM][AcO]).The Ni(0) particles are composed of smaller ones which assemble in a blackberry-like shape.The Ni nanoparticles stabilized with [AMMIM][AcO] are much larger than those stabilized with [AMMIM][Br],and the former unexpectedly give much higher activity in the selective hydrogenation of citral and nitrobenzene (NB) in aqueous phase.The Ni(0) nanocatalysts dispersed in aqueous phase are stable enough to be reused at least five times without significant loss of catalytic activity and selectivity during the catalytic recycles.HU Yu YU YinYin ZHAO XiuGe YANG HanMing FENG Bo LI Huan QIAO YunXiang HUA Li PAN ZhenYan HOU ZhenShan 2010Science China Chemistry2010,53,7:3
5Study of hot electrons generated from intense laser-plasma interaction employing Image Plate显示文摘Image Plate (IP) is convenient to be used and very suitable for radiation detection because of its advantages such as wide dynamic range, high detective quantum efficiency, ultrahigh sensitivity and superior linearity. The function mechanism and characteristics of IP are introduced in this paper. IP was employed in the study of hot electrons generated from intense laser-plasma interaction. The angular distri- bution and energy spectrum of hot electrons were measured with IP in the experi- ments. The results demonstrate that IP is an effective radiation detector for the study of laser-plasma interaction.LIANG WenXi LI YuTong XU MiaoHua YUAN XiaoHui ZHENG ZhiYuan ZHANG Yi LIU Feng WANG ZhaoHua LI HanMing JIN Zhan WEI ZhiYi ZHAO Wei LI YingJun ZHANG Jie 2008Science China(Physics,Mechanics & Astronomy)2008,51,10:2
6Extraction and characteristics of'seed kernel oil from white pitaya 显示文摘Rui Hanming Zhang Liyan Li Zuowei 2009Journal of Food Engineering2009,93,:1
7Ex- traction and characteristics of seed kernel oil from white pitaya显示文摘Rui Hanming Zhang Liyan Li Zuowei 2009Journal of Food Engineering2009,93,:1
8Extraction and characteristics of seed kernel oil from white pitaya显示文摘Rui Hanming Zhang Liyan Li Zuowei 2009J Food Eng2009,93,4:1
9Extraction and char-acteristics of seed kernel oil from white pitaya显示文摘Rui Hanming Zhang Liyan Li Zuowei 2009Journal of FoodEngineering2009,93,:1
10Modulate the superficial structure of La_(2)Ce_(2)O_(7) catalyst with anchoring CuO_(x) species for the selective catalytic oxidation of NH_(3)显示文摘Air contamination caused by the ammonia slip phenomenon has gradually captured the researcher’s extensive attention.An effective strategy for controlling fugitive NH_(2)is critical to improving the air quality and living environment.In the present work,CuO_(x)/La_(2)Ce_(2)O_(7)composite as a potential candidate catalyst is synthesized through the electrostatic adsorption method for the selective catalytic oxidation(SCO_(2))of NH_(2)to N.The 5%Cu Ox/La_(2)Ce_(2)O_(7)exhibits the best catalytic activity(T=243℃)and ammonia conversion efficiency.The improvement of performance is mainly attributed to the superficial connection of[Ce-O-Cu],which enhances the capturing ability of ammonia molecule and accelerates the dissociating efficiency of N–H bonding for Nevolution,simultaneously.This work provides a facile method to synthesis pyrochlore-like composite catalyst of NH_(2)-SCO_(2) for solving the problem of ammonia slip pollution in the future.Xiangchen Kong Zhenguo Li Yuankai Shao Xiaoning Ren Kaixiang Li Hanming Wu Congjie Lv Cheng Lv Shengli Zhu 2022Journal of Materials Science & Technology2022,,16:1
11Extraction and characteristics of seed kernel oil from white pitaya显示文摘Rui Hanming Zhang Liyan Li Zuowei 2009Journal of Food Engineering2009,93,:1
12Insights into performance of pattern search algorithms for high-frequency surface wave analysis显示文摘Xianhai Song Duanyou Li Hanming Gu Yonglong Liao Dachun Ren 2009Computers and Geosciences2009,,8:1
13Osteopontin stimulates vascular smooth muscle cell migration by inducing FAK phosphory lation and ILK dephosphory lation显示文摘Li JJ HanM Wen JK 0,,:1
14Application of fractal permeation model to investigate membrane fouling in membrane bioreactor显示文摘MENG Fangang ZHANG Hanming LI Yansong 2005Journal of Membrane Science2005,262,12:1
15Fast preparation of ordered crystalline mesoporous titania with high thermal stability and photo oxidation performance显示文摘Aiguo Kong Jiang Li Xin Yang Hanming Ding Yongkui Shan 2009Journal of Porous Materials2009,,1:1
16AR5629:A LOOP PROMINENCE SYSTEM AND RADIO SPIKE RADIATION 17 AUG.,1989显示文摘The FRTSS(Fast recording and Time Synchronization System)at 21 cm wave-length at Yunnan Obsewatory is an advanced observation facilities in solar physics inChina with thosecharocters:Gong Yuanfang, Shang Qiongzhen, Lu Songquan, Hu Hanming, Yang Rongbang, Li JiukangYunnan Astronomical observatory Chinese Academy of Sciences Kunming, 650011 China 1990天文研究与技术1990,,4:0
17Parameter Estimation of a Spherical Top Inductively Coupled Plasma Source with Global Model显示文摘Using spatially averaged global model,we succeed in obtaining some plasma parameters for a low pressure inductively coupled plasma source of our laboratory.As far as the global balance is concerned,the models can give reasonable results of the parameters,such as the global electron temperature and the ion impacting energy,etc.It is found that the ion flow is hardly affected by the neutral gas pressure.Finally,the magnetic effects are calculated by means of the method.The magnetic field can play an important role to increase plasma density and ion current.WU Hanming LI Ming CHEN Yunming WU Chengkang 1995Chinese Physics Letters1995,12,5:0
18The Effects of Coil Current Distribution in a Cylindrical Electron Cyclotron Resonance Reactor显示文摘Using a 2-D hybrid model,the authors have found that external currents play an important role in the plasma parameters in the reactor.The plasma density,temperature and electrostatic potential would be significantly influenced by the applied external currents.WU Hanming D.B.Graves LI Ming WANG Qin 1994Chinese Physics Letters1994,11,12:0
19A 65-nm 1-Gb NOR floating-gate flash memory with less than 50-ns access time显示文摘This paper presents a 65-nm 1-Gb NOR-type floating-gate flash memory,in which the cell device and chip circuit are developed and optimized.In order to solve the speed problem of giga-level NOR flash in the deep submicron process,the models of long bit-line and word-line are first given,by which the capacitive and resistive loads could be estimated.Based on that,the read path and key modules are optimized to enhance the chip access property and reliability.With the measurement results,the flash memory cell presents good endurance and retention properties,and the macro is operated with 1-ls/byte program speed and less than 50-ns read time under 3.3 V supply.Yu Wang Zongliang Huo Huamin Cao Ting Li Jing Liu Liyang Pan Xing Zhang Yun Yang Shenfeng Qiu Hanming Wu Ming Liu 2014Chinese Science Bulletin2014,59,29:0
20An UPLC-MS/MS method to monitor Estriol injection and comparison of pharmacokinetic characteristics after irradiation显示文摘Objective:To develop an UPLC-MS/MS method for the accurate quantification of Estriol(E3),a new radioprotective agent,and observe the variation in pharmacokinetic characteristics of E3 after irradiation.As a hormone drug,the gender differences of E3 metabolism were also concerned here.Methods:Various chromatographic and mass spectrometric conditions of E3 were optimized.The specificity,linearity,precision and accuracy of UPLC-MS/MS method were validated.Twenty SD rats,half male and half female,were administered with intramuscular(im)injection of 2.7 mg/kg E3,and then divided randomly into two groups,sham-irradiated group(Con)and irradiated group(IR).IR group was irradiated to 7 Gy ofγ-rays.Blood samples were collected at different times post-irradiation and E3 concentrations were detected.The changes of concentration-time variation and pharmacokinetic parameters for E3 after irradiation were investigated,together with metabolic differences between male and female rats.Results:The range of the calibration curve of UPLC-MS/MS for E3 was 1.00–200.0 ng/mL.Con group reached maximum concentration(Cmax)(77.57±18.71)ng/mL at(0.68±0.29)h(Tmax)after im injection.The drug concentration-time profiles and pharmacokinetic parameters of E3 were consistent before and after irradiation.The areas under time curve(AUC0-t)of E3 were(353±74)h⋅ng/mL for Con group,and(299±74)h⋅ng/mL for IR group(P>0.05).There were also no statistical differences in pharmacokinetic parameters between female and male rats.The elimination half-lifes(T1/2)of males and females were(3.02±0.68)h and(3.01±0.42)h in Con group,and(3.64±0.51)h and(3.38±0.60)h in IR group,respectively(P>0.05).Conclusion:A rapid and sensitive UPLC-MS/MS method for determination of E3 was established.The pharmacokinetic characteristics of E3 in rat were not affected by 7 Gy irradiation and gender differences.This study provided a theoretical basis for the development and application of new radiation injury treatment drug。Hanming Zhang Zhiyun Meng Tong Ye Taoyun Liu Jian Li Fei Ma Ruolan Gu Xiaoxia Zhu Zhuona Wu Guifang Dou Hui Gan 2021Radiation Medicine and Protection2021,2,2:0
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