|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The constraints of strain partitioning and geochronology in Luonan-Luanchuan tectonic belts on Qinling orogenic belt显示文摘The Luonan-Luanchuan tectonic belt lies between the North China Block and Qinling Mountains, in- cluding the Luonan-Luanchuan fault zone and the strong deformation zone to the north of the fault. The ductile shear zone, imbricate brittle fault and duplex structure in the fault zone now are the expression of the same tectonic event in different depth. Such lineation structure exists in the tectonic belts as mineral lineation, elongation lineation, crenulation lineation, sheath folds and so on, indicating NE-directed plate motion. Fold axes and thrusts in the strong deformation zone are inclined to the Luonan-Luanchuan fault zone at small angles. The structures with different natures show a regular pattern, produced during oblique convergence of plates. The convergence factors are as follows:The direction of plate convergence is 22°, 31° and the angle between the plate convergence direction and plate boundary is 73°, 82° respectively in the west and east segment. The Luonan-Luanchuan tectonic belt was deformed strongly in 372 Ma, resulted from Erlangping back-arc ocean basin subduction sin- istrally and obliquely to North China Block during the collision of North China Block and South China Block. | SONG ChuanZhong ZHANG GuoWei WANG YongSheng LI JiaHao CHEN ZeChao CAI ZhiChuan | 2009 | Science China Earth Sciences2009，52，3： | 9 |
| 2 | Facile synthesis of graphene via reduction of graphene oxide by artemisinin in ethanol显示文摘The preparation of reduced graphene oxide(RGO)by chemical reduction of graphene oxide(GO)usually involves highly toxic reducing agents which are harmful to the environment and human health.In this paper,a mediated facile and relative green approach for the preparation of RGO in ethanol using artemisinin as a reducing agent is reported for the first time.The morphology and de-oxidation efficiency of the obtained RGO were characterized by transmission electron microscope(TEM),atomic force microscope(AFM),and X-ray photoelectron spectroscopy(XPS).The results showed that artemisinin can effectively reduce GO into few-layered RGO with a high carbon to oxygen ratio(11.7).The mechanism for elimination of oxygen-containing functional groups decorated on GO nanosheets by artemisinin was proposed.The important features of relatively environmentally friendly and facile operation procedures endow this approach with great promise in the mass production of RGO and various graphene-based materials,especially for biomaterials. | Dandan Hou Qinfu Liu Xianshuai Wang Ying Quan Zhichuan Qiao Li Yu Shuli Ding | 2018 | Journal of Materiomics2018，4，3： | 6 |
| 3 | Retrospective Study of an Adenovirus Pneumonia Outbreak in Shenzhen in 2017显示文摘Dear Editor,Human adenoviruses (HAd Vs) are associated with respiratory,gastrointestinal,ophthalmological,genitourinary,and neurological infections.To date,more than 100genotypes of HAd Vs have been identified.They are classified into seven species,A to G (HAd V Working Group,http://hadvwg.gmu.edu/). | Zhiwei Lu Heping Wang Yanmin Bao Zhichuan Li Huan Zhang Haixia Zhao Yuejie Zheng | 2021 | Virologica Sinica2021，36，3： | 4 |
| 4 | Methylesterification of cell-wall pectin controls the diurnal flower-opening times in rice显示文摘Flowers are the core reproductive organ of plants, and flowering is essential for cross-pollination. Diurnal flower-opening time is thus a key trait influencing reproductive isolation, hybrid breeding, and thermostability in plants. However, the molecular mechanisms controlling this trait remain unknown. Here, we report that rice Diurnal Flower Opening Time 1 (DFOT1) modulates pectin methylesterase (PME) activity to regulate pectin methylesterification levels of the lodicule cell walls, which affect lodicule swelling to control diurnal flower-opening time. DFOT1 is specifically expressed in the lodicules, and its expression gradually increases with the approach to flowering but decreases with flowering. Importantly, a knockout of DFOT1 showed earlier diurnal flower opening. We demonstrate that DFOT1 interacts directly with multiple PMEs to promote their activity. Knockout of PME40 also resulted in early diurnal flower opening, whereas overexpression of PME42 delayed diurnal flower opening. Lower PME activity was observed to be associated with higher levels of pectin methylesterification and the softening of cell walls in lodicules, which contribute to the absorption of water by lodicules and cause them to swell, thus promoting early diurnal flower opening. Higher PME activity had the opposite effect. Collectively, our work uncovers a molecular mechanism underlying the regulation of diurnal flower-opening time in rice, which would help reduce the costs of hybrid breeding and improve the heat tolerance of flowering plants by avoiding higher temperatures at anthesis. | Mumei Wang Xiaopei Zhu Guoqing Peng Minglong Liu Shuqing Zhang Minghao Chen Shitang Liao Xiaoying Wei Peng Xu Xiyu Tan Fangping Li Zhichuan Li Li Deng Ziliang Luo Liya Zhu Shuai Zhao Dagang Jiang Jing Li Zhenlan Liu Xianrong Xie Shaokui Wang Aimin Wu Chuxiong Zhuang Hai Zhou | 2022 | Molecular Plant2022，15，6： | 2 |
| 5 | Effects of catalyst mass loading on electrocatalytic activity:An example of oxygen evolution reaction显示文摘The evaluation of the intrinsic activity of catalysts is the most basic in searching energy-and cost-efficient catalyst materials for various applications.The accurate determination of the intrinsic activity is essential for identifying efficient catalysts.While a huge number of studies of electrocatalysis for various applications have been reported,the effects of electrode loading on the apparent intrinsic activity obtained experimentally have been rarely discussed.With a high mass loading on the electrode,not all the catalyst surfaces can be electrochemically active because not all the surfaces can be wetted by the electrolyte.The loading also affects the transport of electrons over the electrode as well as the transport of ions in the electrolyte,and thus affects the kinetics.These lead to the derivations of the apparent intrinsic activity from the real intrinsic activity.Herein,for better understanding the derivations,we evaluate and discuss the effects of electrode mass loading using oxygen evolution reaction as an example. | Linghui Yu Shengnan Suna Haiyan Li Zhichuan JXu | 2021 | Fundamental Research2021，1，4： | 2 |
| 6 | Understanding the role of interface in advanced semiconductor nanostructure and its interplay with wave function overlap显示文摘As the proportion of interfaces increases rapidly in nanomaterials,properties and quality of interfaces hugely impact the performance of advanced semiconductors.Here,the effect of interfaces is explored by comparatively studying two InAs/AlSb superlattices with and without the thin InAsSb layers inserted inside each InAs layers.Through strain mapping,it indicates that the addition of interfaces leads to an increase of local strain both near interfaces and inside layers.Meantime,owing to the creation of hole potential wells within the original electron wells,the charge distribution undergoes an extra electron-hole alternating arrangement in the structure with inserted layers than the uninserted counterpart.Such a feature is verified to enhance electron-hole wave function overlap by theoretical simulations,which is a must for better optical performance.Furthermore,with an elaborate design of the inserted layers,the wave function overlap could be boosted without sacrificing other key device performances. | Chenyuan Cai Yunhao Zhao Faran Chang Xuebing Zhao Liting Yang Chongyun Liang Guowei Wang Zhichuan Niu Yi Shi Xianhu Liu Yuesheng Li Renchao Che | 2020 | Nano Research2020，13，6： | 1 |
| 7 | BET bromodomain inhibitor JQ1 regulates spermatid development by changing chromatin conformation in mouse spermatogenesis显示文摘As a BET bromodomain inhibitor, JQ1 has been proven have efficacy against a number of different cancers. In terms of male reproduction, JQ1 may be used as a new type of contraceptive, since JQ1 treatment in male mice could lead to germ cell defects and a decrease of sperm motility, moreover, this effect is reversible. However, the mechanism of JQ1 acting on gene regulation in spermatogenesis remains unclear. Here, we performed single-cell RNA sequencing (scRNA-seq) on mouse testes treated with JQ1 or vehicle control to determine the transcriptional regulatory function of JQ1 in spermatogenesis at the single cell resolution. We confirmed that JQ1 treatment could increase the numbers of somatic cells and spermatocytes and decrease the numbers of spermatid cells. Gene Ontology (GO) analysis demonstrated that differentially expressed genes which were down-regulated after JQ1 injection were mainly enriched in “DNA conformation change” biological process in early developmental germ cells and “spermatid development” biological process in spermatid cells. ATAC-seq data further confirmed that JQ1 injection could change the open state of chromatin. In addition, JQ1 could change the numbers of accessible meiotic DNA double-stranded break sites and the types of transcription factor motif that functioned in pachytene spermatocytes and round spermatids. The multi-omics analysis revealed that JQ1 had the ability to regulate gene transcription by changing chromatin conformation in mouse spermatogenesis, which would potentiate the availability of JQ1 in male contraceptive. | Xiaorong Wang Mengmeng Sang Shengnan Gong Zhichuan Chen Xi Zhao Guishuan Wang Zhiran Li Yingying Huang Shitao Chen Gangcai Xie Enkui Duan Fei Sun | 2022 | Genes & Diseases2022，9，4： | 1 |
| 8 | Numerical simulation of blade-wake interaction of vertical axis idal turbine显示文摘 | LI Zhichuan SHENG Qihu ZHANG Liang | 2012 | Advanced Materials Research2012，346，： | 1 |
| 9 | Elec tronic structure of self-assembled InAs quantum disks in an axial magnetic field and two-electron quantum- disk qubit 显示文摘 | Dong Qingrui Li Shushen Niu Zhichuan | 2004 | J Appl Plays2004，96，6： | 1 |
| 10 | The measurement of responsivity of infrared photodetectors using a cavity blackbody显示文摘For the measurement of responsivity of an infrared photodetector,the most-used radiation source is a blackbody.In such a measurement system,distance between the blackbody,the photodetector and the aperture diameter are two parameters that contribute most measurement errors.In this work,we describe the configuration of our responsivity measurement system in great detail and present a method to calibrate the distance and aperture diameter.The core of this calibration method is to transfer direct measurements of these two parameters into an extraction procedure by fitting the experiment data to the calculated results.The calibration method is proved experimentally with a commercially extended InGaAs detector at a wide range of blackbody temperature,aperture diameter and distance.Then proof procedures are further extended into a detector fabricated in our laboratory and consistent results were obtained. | Nong Li Dongwei Jiang Guowei Wang Weiqiang Chen Wenguang Zhou Junkai Jiang Faran Chang Hongyue Hao Donghai Wu Yingqiang Xu Guiying Shen Hui Xie Jingming Liu Youwen Zhao Fenghua Wang Zhichuan Niu | 2023 | Journal of Semiconductors2023，44，10： | 0 |
| 11 | Fiber coupled high count-rate single-photon generated from InAs quantum dots显示文摘In this work,we achieve high count-rate single-photon output in single-mode(SM)optical fiber.Epitaxial and dilute InAs/GaAs quantum dots(QDs)are embedded in a GaAs/AlGaAs distributed Bragg reflector(DBR)with a micro-pillar cavity,so as to improve their light emission extraction in the vertical direction,thereby enhancing the optical SM fiber’s collection capabil-ity(numerical aperture:0.13).By tuning the temperature precisely to make the quantum dot exciton emission resonant to the micro-pillar cavity mode(Q~1800),we achieve a fiber-output single-photon count rate as high as 4.73×10^(6) counts per second,with the second-order auto-correlation g2(0)remaining at 0.08. | Yao Chen Shulun Li Xiangjun Shang Xiangbin Su Huiming Hao Jiaxin Shen Yu Zhang Haiqiao Ni Ying Ding Zhichuan Niu | 2021 | Journal of Semiconductors2021，42，7： | 0 |
| 12 | Synthesis of amorphous Pd-based nanocatalysts for efficient alcoholysis of styrene oxide and electrochemical hydrogen evolution显示文摘Amorphous nanomaterials with long-range disordered structures could possess distinct properties and promising applications,especially in catalysis,as compared with their conventional crystalline counterparts.It is imperative to achieve the controlled preparation of amorphous noble metal-based nanomaterials for the exploration of their phase-dependent applications.Here,we report a facile wet-chemical reduction strategy to synthesize various amorphous multimetallic Pd-based nanomaterials,including PdRu,PdRh,and PdRuRh.The phase-dependent catalytic performances of distinct Pd-based nanomaterials towards diverse catalytic applications have been demonstrated.Specifically,the usage of PdRu nanocatalysts with amorphous and crystalline face-centered cubic(fcc)phases can efficiently switch the ring-opening route of styrene oxide to obtain different products with high selectivity through alcoholysis reaction and hydrogenation reaction,respectively.Moreover,when used as an electrocatalyst for hydrogen evolution reaction(HER),the synthesized amorphous PdRh nanocatalyst exhibits low overpotential and high turnover frequency values,outperforming its crystalline fcc counterpart and most of the reported Pd-based HER electrocatalysts. | Yiyao Ge Jingjie Ge Biao Huang Xixi Wang Guigao Liu Xiang-Huan Shan Lu Ma Bo Chen Guanghua Liu Songmo Du An Zhang Hongfei Cheng Qingbo Wa Shiyao Lu Lujiang Li Qinbai Yun Kuo Yuan Qinxin Luo Zhichuan J.Xu Yonghua Du Hua Zhang | 2023 | Nano Research2023，16，4： | 0 |
| 13 | Chemoselective electrochemical seleno-cyclization of dienes to medium-sized benzo[b]azocines显示文摘The preparation of medium-sized benzo[b]azocines has always been challenging because of inherently unfavorable enthalpy and entropy factors.This report presents a novel approach for accessing 8-membered seleno-benzo[b]azocines via electrochemically-driven seleno-cyclization.This method enables room-temperature preparation of various structurally diverse medium-sized seleno-benzo[b]azocines.The facile deselenation of the seleno-cyclization products to generate functionalized dienes is an additional benefit of this indispensable reaction.Mechanistic insights are presented based on radical inhibition experiments and cyclic voltammetry measurements,which elucidate the radical pathway.Finally,density functional theory calculations further rationalize the rate-determining step and the unique chemoselectivity observed in this transformation. | Zhichuan Wang Xin Wang Quanxin Li Shaofei Ni Dongyang Zhao Shubin Yang Ge Qiu Kai Sun | 2024 | Chinese Chemical Letters2024，35，2： | 0 |
| 14 | Terahertz phononic crystal in plasmonic nanocavity显示文摘Interaction between photons and phonons in cavity optomechanical systems provides a new toolbox for quantum information technologies.A GaAs/AlAs pillar multi-optical mode microcavity optomechanical structure can obtain phonons with ultra-high frequency(~THz).However,the optical field cannot be effectively restricted when the diameter of the GaAs/AlAs pillar microcavity decreases below the diffraction limit of light.Here,we design a system that combines Ag nanocav-ity with GaAs/AlAs phononic superlattices,where phonons with the frequency of 4.2 THz can be confined in a pillar with~4 nm diameter.The Q_(c)/V reaches 0.22 nm^(-3),which is~80 times that of the photonic crystal(PhC)nanobeam and~100 times that of the hybrid point-defect PhC bowtie plasmonic nanocavity,where Q_(c) is optical quality factor and V is mode volume.The optome-chanical single-photon coupling strength can reach 12 MHz,which is an order of magnitude larger than that of the PhC nanobeam.In addition,the mechanical zero-point fluctuation amplitude is 85 fm and the efficient mass is 0.27 zg,which is much smaller than the PhC nanobeam.The phononic superlattice-Ag nanocavity optomechanical devices hold great potential for applications in the field of integrated quantum optomechanics,quantum information,and terahertz-light transducer. | Zhenyao Li Haonan Chang Jia-Min Lai Feilong Song Qifeng Yao Hanqing Liu Haiqiao Ni Zhichuan Niu Jun Zhang | 2023 | Journal of Semiconductors2023，44，8： | 0 |
| 15 | Bright semiconductor single-photon sources pumped by heterogeneously integrated micropillar lasers with electrical injections显示文摘The emerging hybrid integrated quantum photonics combines the advantages of different functional components into a single chip to meet the stringent requirements for quantum information processing.Despite the tremendous progress in hybrid integrations of III-V quantum emitters with silicon-based photonic circuits and superconducting single-photon detectors,on-chip optical excitations of quantum emitters via miniaturized lasers towards single-photon sources(SPSs)with low power consumptions,small device footprints,and excellent coherence properties is highly desirable yet illusive.In this work,we present realizations of bright semiconductor SPSs heterogeneously integrated with on-chip electrically-injected microlasers.Different from previous one-by-one transfer printing technique implemented in hybrid quantum dot(QD)photonic devices,multiple deterministically coupled QD-circular Bragg Grating(CBG)SPSs were integrated with electrically-injected micropillar lasers at one time via a potentially scalable transfer printing process assisted by the wide-field photoluminescence(PL)imaging technique.Optically pumped by electrically-injected microlasers,pure single photons are generated with a high-brightness of a count rate of 3.8 M/s and an extraction efficiency of 25.44%.Such a high-brightness is due to the enhancement by the cavity mode of the CBG,which is confirmed by a Purcell factor of 2.5.Our work provides a powerful tool for advancing hybrid integrated quantum photonics in general and boosts the developments for realizing highly-compact,energy-efficient and coherent SPSs in particular. | Xueshi Li Shunfa Liu Yuming Wei Jiantao Ma Changkun Song Ying Yu Rongbin Su Wei Geng Haiqiao Ni Hanqing Liu Xiangbin Su Zhichuan Niu You-ling Chen Jin Liu | 2023 | Light(Science & Applications)2023，12，3： | 0 |
| 16 | Trifluoromethoxylation/trifluoromethylthiolation/trifluoromethylselenolation strategy for the construction of heterocycles显示文摘The XCF_(3)groups(X=O,S,Se)play an increasingly important role in modern organic chemistry due to their unique electronegativity,lipophilic nature,metabolic stability,and bioavailability.Heterocyclic compounds are important scaffolds in many bioactive compounds and drugs.The incorporation of XCF_(3)groups into heterocyclic compounds can change their physicochemical and biological properties,which injects new vitality into the application of heterocyclic compounds in many fields such as organic chemistry,the pharmaceutical chemistry,and life sciences.In this paper,the recent progress in the synthesis of F_(3)CX-containing heterocycles is reviewed,and the application scope and mechanism of some reactions are discussed. | Xin Wang Zhichuan Wang Zhenjian Li Kai Sun | 2023 | Chinese Chemical Letters2023，34，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员