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| 1 | Mesoproterozoic age for Xiamaling Formation in North China Plate indicated by zircon SHRIMP dating显示文摘Zircon grains of magmatic origin from tuffite layers in the Xiamaling Formation at Zhaojiashan Village, Xuanhua area, Hebei Province, were used for zircon dating with a Sensitive High-Resolution Ion Microprobe (SHRIMP II), which gives a weighted mean 207Pb/206Pb age of 1366±9 Ma. It shows a very similar age (1368±12 Ma) as the zircon dating from the Xiamaling Formation in Western Hill, Beijing. This age proposes that the Xiamaling Formation in the North China plate should be of Mesoproterozoic, instead of Neoproterozoic based on K-Ar, Ar-Ar dating. The new zircon age also indicates the devel- opment of macrofossils algae from the Mesoproterozoic age. | GAO LinZhi ZHANG ChuanHeng SHI XiaoYing SONG Biao WANG ZiQiang LIU YaoMing | 2008 | Chinese Science Bulletin2008,53,17: | 68 |
| 2 | A New SHRIMP Age of the Xiamaling Formation in the North China Plate and Its Geological Significance显示文摘建立 hypostratotype 近来前寒武纪是关于中央的研究的主要目的 -- 并且在诺思中国的 Neoproterozoic。chronostratigraphic 位置是在这研究的钥匙。然而,许多关键地平线没与高质量的同位素的年龄被校准。用有敏感高分辨率的离子 Microprobe (虾 II ) 的报导新 U-Pb 年龄,锆石 U-Pb 年龄在诺思中国板中在 Xiamaling 形成灰床被获得,产出 1368+-12 妈的加权的吝啬的 ^(206 )Pb/^(238 ) U 年龄。现在是从在北方中国板中的 Xiamaling 形成的第一虾 U-Pb 年龄,并且代表 Xiamaling 形成的中间的部分的扔的时间。锆石年龄起一个重要作用到在中央期间理解北方中国板的地质的进化 -- 并且 Neoproterozoic。 | GAO Linzhi ZHANG Chuanheng SHI Xiaoying ZHOU Hongrui WANG Ziqiang SONG-Biao | 2007 | Acta Geologica Sinica(English Edition)2007,81,6: | 35 |
| 3 | Coordinated regulation of apical hook development by gibberellins and ethylene in etiolated Arabidopsis seedlings显示文摘当在土壤发芽时,当通过土壤耸出时,黑暗成年的 Arabidopsis 幼苗开发一个顶端的钩,它保护子叶和顶端的 meristematic 纸巾。几荷尔蒙被报导清楚地调制这个过程。以前的研究证明了乙烯和赤霉素(气体) 并列地调整钩发展,尽管内在的分子的机制大部分是未知的。当 paclobutrazol 镇压了时,这里,我们显示出提高的那 GA 3 ethylene-overexpression 和 EIN3-overexpression (EIN3ox ) 导致了钩弯曲,并且 della 异种展出了夸大的钩弯曲,它要求了发信号的未经触动的乙烯小径。基因学习表明那提高 GA 的钩开发依赖于无钩 1 (HLS1 ) ,调停的一个中央管理者多重发信号小径的输入在顶端的钩开发期间。我们进一步发现那 GA 3 导致(并且 DELLA 蛋白质镇压了) 在乙烯感觉迟钝的 3/EIN3-LIKE 的 HLS1 表示 1 (EIN3/EIL1 ) 依赖举止, EIN3/EIL1 由此激活 HLS1 抄写由对它的倡导者直接有约束力。另外, DELLA 蛋白质被发现与 EIN3/EIL1 的 DNA 有约束力的领域交往并且镇压 EIN3/EIL1-regulated HLS1 表示。有 naphthylphthalamic 酸的处理,一个极的植物生长素运输禁止者,镇压 EIN3ox 线的组成地夸大的钩弯曲和 della 异种,支持那植物生长素在钩开发乙烯和 GA 小径下游地工作。一起拿,我们的结果作为联系 DELLA 的抄写因素的一个新类识别 EIN3/EIL1 并且证明 GA 由经由 EIN3/EIL1 函数的 derepression 导致 HLS1 的表达式部分与乙烯在合作支持顶端的钩形成。 | Fengying An Xing Zhang Ziqiang Zhu Yusi Ji Wenrong He Zhiqiang Jiang Mingzhe Li Hongwei Guo | 2012 | Cell Research2012,22,5: | 34 |
| 4 | Biodegradable mineralized collagen plug for the reconstruction of craniotomy burr‐holes:A report of three cases显示文摘Objectives: In this case report, we describe the design, fabrication and clinical outcomes of a novel bioresorbable, mineralized collagen burr‐hole plug for the reconstruction of craniotomy burr‐holes. Methods: Mineralized collagen burr‐hole plugs were fabricated via a biomimetic mineralization process. The biomimetic mineralized collagen has a similar chemical composition and microstructure to natural bone tissue, thereby possessing good biocompatibility and osteoconductivity. The mineralized collagen burr‐hole plugs were implanted into three patients, and clinical outcomes were evaluated at one‐year follow‐ups. Results: All bone defects healed very well using the mineralized collagen burr‐hole plugs, and there were no adverse reactions at the surgical sites. Conclusions: The clinical outcomes indicated that the mineralized collagen was effective for reconstructing burr‐holes in the skull after craniotomy. | Zhiye Qiu Yuqi Zhang Ziqiang Zhang Tianxi Song Fuzhai Cui | 2015 | Translational Neuroscience and Clinics2015,1,1: | 13 |
| 5 | An Association of Elevated Serum Prolactin with Phthalate Exposure in Adult Men显示文摘Objective To investigate the associations of hormone circulation with phthalate exposure in adult men. Methods Semen and serum samples were collected from 118 men who were suspected of infertility. Phthalate diesters including dibutyl phthalate (DBP) and diethylhexyl phthalate (DEHP) in both semen and serum samples were measured, along with serum levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), testosterone (T), estradiol (E 2 ) and prolactin (PRL). Results Serum PRL was positively associated with serum DBP and DEHP and semen DEHP in all models of Spearman correlation, linear regression and binary logistic regression. In linear regression models adjusted for potential confounders and excluding subjects with undetectable phthalates, a 10‐fold increase in semen DEHP was associated with a 23% increase in serum PRL, as well as a 26% increase in serum DBP and a 20% increase in serum DEHP. In logistic regression models all subjects demonstrated a dose‐response relationship between above reference value PRL and semen DEHP (odds ratio per tertile adjusted for potential confounders = 1.0, 1.70, 3.50; P for trend = 0.01), and serum DBP (1.0, 1.10, 2.62; P for trend = 0.04), and serum DEHP (1.0, 1.46, 4.69; P for trend < 0.01). A positive correlation between serum estradiol and semen DEHP (linear regression), and an inverse correlation between semen DBP and serum testosterone and T:E 2 ratio (Spearman correlation) were also established. Conclusions Serum PRL is suggested to be positively associated with both DBP and DEHP exposure in adult men. | LI ShuGuang DAI JiCan ZHANG LiQian ZHANG Jing ZHANG ZiQiang CHEN Bo | 2011 | Biomedical and Environmental Sciences2011,24,1: | 12 |
| 6 | Structure Design of Lower Limb Exoskeletons for Gait Training显示文摘Due to the close physical interaction between human and machine in process of gait training, lower limb exoskeletons should be safe, comfortable and able to smoothly transfer desired driving force/moments to the patients. Correlatively, in kinematics the exoskeletons are required to be compatible with human lower limbs and thereby to avoid the uncontrollable interactional loads at the human-machine interfaces. Such requirement makes the structure design of exoskeletons very difficult because the human-machine closed chains are complicated. In addition, both the axis misalignments and the kinematic character difference between the exoskeleton and human joints should be taken into account. By analyzing the DOF(degree of freedom) of the whole human-machine closed chain, the human-machine kinematic incompatibility of lower limb exoskeletons is studied. An effective method for the structure design of lower limb exoskeletons, which are kinematically compatible with human lower limb, is proposed. Applying this method, the structure synthesis of the lower limb exoskeletons containing only one-DOF revolute and prismatic joints is investigated; the feasible basic structures of exoskeletons are developed and classified into three different categories. With the consideration of quasi-anthropopathic feature, structural simplicity and wearable comfort of lower limb exoskeletons, a joint replacement and structure comparison based approach to select the ideal structures of lower limb exoskeletons is proposed, by which three optimal exoskeleton structures are obtained. This paper indicates that the human-machine closed chain formed by the exoskeleton and human lower limb should be an even-constrained kinematic system in order to avoid the uncontrollable human-machine interactional loads. The presented method for the structure design of lower limb exoskeletons is universal and simple, and hence can be applied to other kinds of wearable exoskeletons. | LI Jianfeng ZHANG Ziqiang TAO Chunjing JI Run | 2015 | Chinese Journal of Mechanical Engineering2015,28,5: | 11 |
| 7 | Solution-processed copper nanowire flexible transparent electrodes with PEDOT:PSS as binder, protector and oxide-layer scavenger for polymer solar cells显示文摘nanowire (NW ) 拍摄的 Cu 的容易的氧化和表面粗糙是为他们在透明传导性的电极(TCE ) 的用法的主要瓶颈。此处,我们开发了一条灵巧、可伸缩起来的答案线路准备 Cu 由把 Cu NW 嵌进的基于 NW 的 TCE pre 涂 poly 变光滑(3,4-ethylenedioxythiophene ): poly (styrenesulfonate )(PEDOT : PSS ) 电影在上 poly (乙烯 terephthalate )( 宠物) 底层。那么获得的 Cu NW-PEDOT : PSS/PET 电影有低表面粗糙(在高度的 70 nm ) ,向氧化的高稳定性和好灵活性。最佳的 TCE 显示出 15 猯'T? 的一个典型的表电阻 ?? | Jianyu Chen Weixin Zhou Jun Chen Yong Fan Ziqiang Zhang Zhendong Huang Xiaomiao Feng Baoxiu Mi Yaowen Ma Wei Huang | 2015 | Nano Research2015,8,3: | 10 |
| 8 | A Passive Anti-icing Strategy Based on a Superhydrophobic Mesh with Extremely Low Ice Adhesion Strength显示文摘Although superhydrophobic materials have attracted much research interest in anti-icing,some controversy still exists.In this research,we report a cost-effective method used to verify the contribution of area fraction to ice adhesion strength.We tried to partially-embed siliea nanopnarticles into microscale fabrics of a commercial polyamide mesh.Then,the area fraction could be determined by altering the mesh size.Generally,the ice adhesion strength decreases as the area fraction decreases.An ice adhesion strength of~1.9 kPa and a delayed freezing time of~1048 s can be obtained.We attribute the low ice adhesion strength to the combination of superhydro-phobicity and stress concentration.The superhydrophobicity prohibits the water from penetrating into the voids of the meshes,and the small actual contact area leads to stress concentration which promotes interfacial crack propagation.Moreover,our superhydrophobic mesh simultaneously exhibis a micro-nano hierarchical structure and a partally-cmbedded structure.Therefore,the as-prepared superhydrophobic mesh retained the ieephobicity after 20 icingldeicing cycles,and maintained its superhydrophobicity even afier 60 sandpaper-abrasion cycles and a 220'C thermal treatment. | Peng Wang Ziqiang Li Qing Xie wei Duan Xinchun Zhang Huilong Han | 2021 | Journal of Bionic Engineering2021,18,1: | 9 |
| 9 | In-situ fabricated anisotropic halide perovskite nanocrystals in polyvinylalcohol nanofibers: Shape tuning and polarized emission显示文摘We report an in-situ fabrication of halide perovskite (CH3NH3PbX3,CH3NH3 =methylammonium,MA,X =Cl,Br,I) nanocrystals in polyvinylalcohol (PVA) nanofibers (MAPbX3@PVA nanofibers) through electrospinning a perovskite precursor solution.With the content of the precursors increased,the resulting MAPbBr3 nanocrystals in PVA matrix changed the shape from ellipsoidal to pearl-like,and finely into rods-like.Optimized MAPbBr3@PVA nanofibers show strong polarized emission with the photoluminescence quantum yield of up to 72%.We reveal correlations between the shape of in-situ fabricated perovskite nanocrystals and the polarization degree of their emission by comparing experimental data from the single nanofiber measurements with theoretical calculations.Polarized emission of MAPbBr3@PVA nanofibers can be attributed to the dielectric confinement and quantum confinement effects.Moreover,nanofibers can be efficiently aligned by using parallel positioned conductor strips with an air gap as collector.A polarization ratio of 0.42 was achieved for the films of well-aligned MAPbBr3@PVA nanofibers with a macroscale size of 0.5 cm × 2 cm,which allows potential applications in displays,lasers,waveguides,etc. | Linghai Meng Changgang Yang Jingjia Meng Yongzhi Wang Yong Ge Ziqiang Shao Guofeng Zhang Andrey L.Rogach Haizheng Zhong | 2019 | Nano Research2019,12,6: | 9 |
| 10 | Design and application of a small electrode experimental installation for resistivity measurement of mineral and solid insulating material显示文摘There has not been an effective method to measure the resistivity of small-size sample of mineral and solid insulating material until now.According to the Chinese National Standard(GB/T1410-2006) and features of digital high resistance meter,a small electrode experimental installation was developed;it can work with current high resistance meter;the sample decreases to 18 mm from standard size 100 mm in diameter and reduces by 30.86 times in area.A three-electrode system is supported and precisely positioned by two insulating bases whose diameter is 60 mm and height is 20 mm,which ensures accuracy of device structure and reliability of measuring results.The key technological parameters are as follows:diameter of high voltage electrode is 18mm;diameter of measuring electrode is 14.6 mm;internal diameter and external diameter of guard electrode are 16 and 18 mm,respectively;the gap between guard electrode and measuring electrode is set at 0.6 mm.These parameters are adequate for the measurement of flat specimen of mineral and solid insulating material whose diameter is 18 mm.According to the confirmatory experiment on the volume resistivity and surface resistivity,the measuring results are almost the same,using a small electrode experimental installation and a standard electrode. | WANG Ling LUO Ke LI ZiQiang GUAN SongYun GE Wei ZHANG JunYuan | 2011 | Science China(Technological Sciences)2011,54,4: | 8 |
| 11 | Presenilin 2 deficiency facilitates Aβ-induced neuroinflammation and injury by upregulating P2X7 expression显示文摘Accumulating evidence suggests that β-amyloid (Aβ)-induced neuroinflammation plays a prominent and early role in Alzheimer’s disease (AD). In this study, we demonstrated that Presenilin 2 (PS2) deficiency facilitates Aβ-induced neuroinflammation and injury by upregulating P2X7 expression both in vitro and in vivo. PS2 knockout mice demonstrated increased cognitive impairments and cerebral injury. PS2 deficiency increased the expression of P2X7 both in neurons and microglial cells.Furthermore, extracellular ATP also increased in both Aβ-treated and untreated PS2 knockout microglial cells. Notably, Aβ-induced classical proinflammatory cytokines such as IL-1β, IL-1α and TNF-α were increased in PS2 knockout microglial cells, suggesting a potential role for PS2 in the regulation of neuroinflammation. The expression of P2X7 clearly increased in PS2 knockdown BV2 cells. Consistent with in vivo data, Aβ-induced IL-1β production was also clearly enhanced in PS2 knockdown BV2 cells. Additionally, expression of the transcription factor Sp1 was increased in PS2 knockdown cells. When we treated PS2 knockdown cells with the specific Sp1 inhibitor MIT, we observed that enhanced P2X7 expression was significantly rescued. Taken together, these data suggests that PS2 plays a protective role during Aβ-induced neuroinflammation and injury through down-regulation of P2X7 expression. | Juliang Qin Xiaoyu Zhang Ziqiang Wang Jinju Li Zhen Zhang Liangcai Gao Hua Ren Min Qian Bing Du | 2017 | Science China(Life Sciences)2017,60,2: | 7 |
| 12 | Reduning injection for fever, rash, and ulcers in children with mild hand, foot, and mouth disease: a randomized controlled clinical study显示文摘OBJECTIVE: To assess the efficacy and safety of Reduning injection for fever, rash, and ulcers in children with mild hand, foot, and mouth disease(HFMD). METHODS: A stratified-block randomized, double-blind, parallel-controlled, and multicenter clinical trial was conducted with 360 patients in five hospitals across China: Quanzhou Children's Hospital, Shijiazhuang No. 5 Hospital, Shanghai Public Health Centre, Hunan Provincial Children's Hospital, and Kaifeng Children's Hospital. Patients were randomized into three groups with 120 in each. Group A was treated with Western Medicine, group B with Reduning injection, a Chinese herbal medicine, and group C with both Reduning injection and Western Medicine. Results were compared for treatment efficacy and safety on HFMD. The clinical outcomes were observed as follows: fever and onset time of antifebrile effect(time to bring the body temperature down ≥0.5℃ after medication); cumulative time for fever recovery(body temperature recovering to normal and lasting more than 24 h without medication); cumulative time for rash disappearance(without new rashes or ulcers appearing and the original ones fading away); and cumulative time for mouth ulcer disappearance. RESULTS: For the onset time of the antifebrile effect, there was no statistical difference between groups A and B(P>0.05) and groups B and C(P> 0.05). However, there was a statistical difference between groups A and C(P<0.05), and the effect in group C was the best. For the cumulative time for rash disappearance, there was no statistical difference between groups A and B(P>0.05). There were statistical differences between groups A and C, and groups B and C(P<0.05), and the effect in group C was the best. For the cumulative time for mouth ulcers disappearance, there were no statistical differences among the three groups(P>0.05). CONCLUSION: Reduning injection with Western Medicine for symptomatic treatment is most effective for mild HFMD. No adverse reactions were observed. | Guoliang Zhang Jie Zhao Liyun He Shiyan Yan Ziqiang Zhuo Haojie Zheng Yongping Mu Shuangjie Li Xi Zhang Jihan Huang Xiuhui Li Jianping Liu Hehe Wan Chaoyu Wei Wei Xiao | 2013 | Journal of Traditional Chinese Medicine2013,33,6: | 7 |
| 13 | A new free-hand pedicle screw placement technique with reference to the supraspinal ligament显示文摘We sought to compare the safety and accuracy of a new free-hand pedicle screw placement technique to that of the conventional technique.One hundred fifty-three consecutive adult patients with simple fracture in the thoracic or/and lumbar spine were alternately assigned to either the new free-hand or the conventional group.In the new free-hand technique group,preoperative computerized tomography(CT) images were used to calculate the targeted medial-lateral angle of each pedicle trajectory and the pedicle screw was inserted perpendicular to the corresponding supraspinal ligament.In the conventional technique group,the medial-lateral and cranial-caudal angle of each pedicle trajectory was determined by intraoperatively under fluoroscopic guidance.The accuracy rate of pedicle screw placement,the time of intraoperative fluoroscopy,the operating time and the amount of blood loss during operation were respectively compared.All screws were analyzed by using intraoperative radiographs,intraoperative triggered electromyography(EMG) monitoring data,postoperative CT data and clinical outcomes.The accuracy rate of pedicle screw placement in the new free-hand technique group and the conventional technique group was 96.3% and 94.2%(P < 0.05),respectively.The intraoperative fluoroscopy time of the new technique group was less than that of the conventional technique group(5.37 seconds vs.8.79 seconds,P < 0.05).However,there was no statistical difference in the operating time and the amount of blood loss during operation(P > 0.05).Pedicle screw placement with the free-hand technique which keeps the screw perpendicular to the supraspinal ligament is an accurate,reliable and safe technique to treat simple fracture in the thoracic or lumbar spine. | Juming Li Hong Zhao Hao Xie Lipeng Yu Jifu Wei Min Zong Feng Chen Ziqiang Zhu Ning Zhang Xiaojian Cao | 2014 | The Journal of Biomedical Research2014,28,1: | 7 |
| 14 | Sequence Stratigraphy of Upper Proterozoic Glacigenous Rocks in Southeastern Margin of Yangtze Platform显示文摘The Upper Proterozoic glacigenous rocks in the southeastern margin of the Yangtze platform were accumulated in a glacially influenced marine environment with extension set- ting. Two type I depositional sequences have been identified in the glacioclastic sediments the their boundaries enhanced by both tectonism and the incision of glaciation. The lower sequence (SQ1), comprising Changan and Fulu formations (Guangxi Province), Jiangkou and Xiangmen formations(Hunan Province) and their equivalents, is bounded by erosional unconformities both at the base and on the top. The upper sequence (SQ2), composed mainly of Nantuo Formation and its equivalents, is confined by an erosional unconformity at the base and covered by an exposure surface of karstification on the top. The depositional systems tracts are difficult to be distinguished directly and mainly characterized by the variation in glacioclastic supplies. Two types of episodic parasequeuces can be identified in the glacigenous rocks and are related to the evolution of depositional systems tracts. Both the sequences and parasequences are caused by autocyclic mechanism. The present research shows that the Upper Proterozoic glacigenous deposits are of significance for the analysis of the tectonic evolution of the Late Precambrian basin in South China. | Jiang Ganqing Wang Ziqiang Zhang Linghua (Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083) | 1996 | Journal of Earth Science1996,15,1: | 6 |
| 15 | 中国人口生育意愿变迁:1980-2011(英文)显示文摘本文基于1980—2011年间开展的227项关于中国人生育意愿的调查结果,运用横断历史元分析方法,考察了生育意愿的纵向变化趋势。研究发现:1980年以来中国人理想子女数呈减少趋势。2000年之后平均理想子女数基本稳定在1.6—1.8人之间。1980年代中国人生育水平高于生育意愿。随着经济和教育发展水平的提升,二者均呈下降趋势,但是生育水平下降快于生育意愿。1990年之后生育水平低于生育意愿,即人们实际生育子女数少于理想子女数。这为认识生育意愿和生育水平在中国的变化趋势提供了实证依据。 | 侯佳伟 Huang Silin Xin Ziqiang Sun Ling Zhang Hongchuan Dou Donghui Zhao Yuanyuan | 2015 | Social Sciences in China2015,36,1: | 5 |
| 16 | Mechanism of Locust Air Posture Adjustment显示文摘 | Diansheng Chen Kewei Chen Ziqiang Zhang Benguang Zhang | 2015 | Journal of Bionic Engineering2015,12,3: | 5 |
| 17 | Analysis and comparison of three leg models for bionic locust robot based on landing buffering performance显示文摘Good landing buffering performance can reduce impact and vibration for the bionic locust jumping robot; thus, a landing buffer is important in evaluating the motion performance of the bionic locust robot. In particular, the legs of the robot are the main structures that realize the buffer; thus, its structure affects buffering performance. Three typical leg structure models are established based on the physiological analysis of the locust leg and research status, namely, bionic leg, multi-constraint leg, and arc legs. Kinematic and force analyses are conducted for these types of legs. Particularly, flexible deformation of leg link is considered in the analysis to describe the movement process accurately. In order to compare the buffering performance of these types of legs quantitatively, the performance indices with maximum buffering distance, the energy absorption capability, and the mechanical property are presented. Based on the performance indices, the structure parameters are analyzed and optimized. The buffering performance of the three leg structures is compared with the comprehensive performance of different structures in each best state. This study offers a quantitative analysis and comparison for different legs of bionic locust jumping robot based on landing buffering performance. Furthermore, a theoretical basis for future research and engineering applications is established. | ZHANG ZiQiang CHEN DianSheng CHEN KeWei | 2016 | Science China(Technological Sciences)2016,59,9: | 5 |
| 18 | Reliability and validity of dermatology life quality index: assessment of quality of life in human immunodeficiency virus/acquired immunodeficiency syndrome patients with pruritic papular eruption显示文摘OBJECTIVE: To test the reliability and validity of dermatology life quality index(DLQI) in simplified Chinese language by assessing the quality of life(QoL) in HIV(human immunodeficiency virus)/AIDS(Acquired immunodeficiency syndrome) patients with pruritic papular eruption(PPE). METHODS: A study of simplified-Chinese-versiond from10 questions with the principal component analysis and the contribution rate of the 3 common factors was 59.95%. CONCLUSION: The simplified-Chinese-version DIQL is an acceptable and valid scale for HIV/AIDS patients with PPE. It can be used to evaluate the QoL of HIV/AIDS patients with PPE in China. | Zhibin Liu Zheng Xie Li Zhang Yantao Jin Huijun Guo Ziqiang Jiang Xiumin Chen Jun Yuan | 2013 | Journal of Traditional Chinese Medicine2013,33,5: | 5 |
| 19 | Growth and Optical Applications of Centimeter-Long ZnO Nanocombs显示文摘Ultralong ZnO nanocombs have been synthesized on silicon substrates with a high growth rate of~7μm/s using a simple“thermal evaporation and condensation”method promoted by Cu catalysts.The lengths of the ZnO nanocombs range from several millimeters to more than one centimeter and the diameters of the branches are about 300 nm.The growth mechanism of the ultralong nanocombs and the catalytic behavior of the copper are discussed.The nanocombs were readily separated and their applications as optical polarizer and grating were investigated.The results show that the ultralong ZnO nanocombs can act as effective optical components in miniaturized integrated optics systems. | Ke Yu Qiuxiang Zhang Jin Wu Lijun Li Yuʼe Xu Shaohua Huang Ziqiang Zhu | 2008 | Nano Research2008,1,3: | 4 |
| 20 | Great progress in developing 500 MHz single cell superconducting cavity in China显示文摘Superconducting cavities have been adopted in many kinds of accelerator facilities such as synchrotron radiation light source, hard X-ray free electron laser linac, colliders and energy recovery linacs (ERL). The 500 MHz superconducting cavities will be a candidate to be installed in the high current accelerators and high current ERLs for their large beam aperture, low higher order modes impedance and high current threshold value. This paper presents great progress in the whole sequence of developing 500 MHz superconducting cavity in China. It describes the first in-house successful development of 500 MHz single cell superconducting cavity including the deep-drawing of niobium half cells, electron beam wielding of cavity, surface preparations and vertical testing. The highest accelerating gradient of the fabricated cavity #SCD-02 higher than 10 MV/m was obtained while the quality factor was better than 4×108 at 4.2 K, which has reached the world level of the same kind of cavities. | LIU JianFei HOU HongTao MAO DongQing FENG ZiQiang MA ZhenYu LUO Chen ZHAO ShenJie ZHAO YuBin YU HaiBo YIN Bo ZHANG ZhiGang ZHENG Xiang LI Zheng | 2011 | Science China(Physics,Mechanics & Astronomy)2011,54,S2: | 4 |