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276篇 您的检索式:作者名="Pi Wang"
    题名 作者 年代 出处 被引量
1A Chromosome-Scale Genome Assembly of Paper Mulberry(Bmussonetia papyrifera)Provides New Insights into Its Forage and Papermaking Usage显示文摘Paper mulberry(Broussonetia papyrifera)is a well-known woody tree historically used for Cai Lun papermaking,one of the four great inventions of ancient China.More recently,Paper mulberry has also been used as forage to address the shortage of feedstuff because of its digestible crude fiber and high protein contents.In this study,we obtained a chromosome-scale genome assembly for Paper mulberry using integrated approaches,including Illumina and PacBio sequencing platform as well as Hi-C,optical,and genetic maps.The assembled Paper mulberry genome consists of 386.83 Mb,which is close to the estimated size,and 99.25%(383.93 Mb)of the assembly was assigned to 13 pseudochromosomes.Comparative genomic analysis revealed the expansion and contraction in the flavonoid and lignin biosynthetic gene families,respectively,accounting for the enhanced flavonoid and decreased lignin biosynthesis in Paper mulberry.Moreover,the increased ratio of syringyl-lignin to guaiacyl-lignin in Paper mulberry underscores its suitability for use in medicine,forage,papermaking,and barkcloth making.We also identified the rootassociated microbiota of Paper mulberry and found that Pseudomonas and Rhizobia were enriched in its roots and may provide the source of nitrogen for its stems and leaves via symbiotic nitrogen fixation.Collectively,these results suggest that Paper mulberry might have undergone adaptive evolution and recruited nitrogen-fixing microbes to promote growth by enhancing flavonoid production and altering lignin monomer composition.Our study provides significant insights into genetic basis of the usefulness of Paper mulberry in papermaking and barkcloth making,and as forage.These insights will facilitate further domestication and selection as well as industrial utilization of Paper mulberry worldwide.Xianjun Peng Hui Liu Peilin Chen Feng Tang Yanmin Hu Fenfen Wang Zhi Pi Meiling Zhao Naizhi Chen Hui Chen Xiaokang Zhang Xueqing Yan Min Liu Xiaojun Fu Guofeng Zhao Pu Yao Lili Wang He Dai Xuming Li Wei Xiong Wencai Xu Hongkun Zheng Haiyan Yu Shihua Shen 2019Molecular Plant2019,12,5:18
2Emerging in-plane anisotropic two-dimensional materials显示文摘Black phosphorus(BP)is a rapidly up and coming star in two-dimensional(2D)materials.The unique characteristic of BP is its in-plane anisotropy.This characteristic of BP ignites a new type of 2D materials that have low-symmetry structures and in-plane anisotropic properties.On this basis,they offer richer and more unique low-dimensional physics compared to isotropic 2D materials,thus providing a fertile ground for novel applications including electronics,optoelectronics,molecular detection,thermoelectric,piezoelectric,and ferroelectric with respect to in-plane anisotropy.This article reviews the recent advance in characterization and applications of in-plane anisotropic 2D materials.Liang Li Wei Han Lejing Pi Ping Niu Junbo Han Chengliang Wang Bin Su Huiqiao Li Jie Xiong Yoshio Bando Tianyou Zhai 2019InfoMat2019,1,1:16
3脑卒中后认知运动干预对步态和平衡影响显示文摘当认知和运动任务同时完成时,会发生认知运动干预(CMI)。该技术已用于运动医学康复来增强疗效。本综述和荟萃分析研究了在脑卒中患者中,CMI用于改善步态和平衡的疗效。本文检索了多个数据库,筛选出了发表于1972年到2014年间的随机对照试验——包括成年脑卒中患者CMI治疗组和对照组。主要评价指标为步态和平衡评定,次要评价指标为日常生活能力以及功能独立性评定。Wang XQ Pi YL Chen BL 吴毅 2015中国康复2015,30,5:13
4Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling显示文摘Polyurea is widely employed as a protective coating in many fields because of its superior ability to improve the anti-blast and anti-impact capability of structures.In this study,the mechanical properties of polyurea XS-350 were investigated via systematic experimentation over a wide range of strain rates(0.001-7000 s^-1)by using an MTS,Instron VHS,and split-Hopkinson bars.The stress-strain behavior of polyurea was obtained for various strain rates,and the effects of strain rate on the primary mechanical properties were analyzed.Additionally,a modified rate-dependent constitutive model is proposed based on the nine-parameter Mooney-Rivlin model.The results show that the stress-strain curves can be divided into three distinct regions:the linear-elastic stage,the highly elastic stage,and an approximate linear region terminating in fracture.The mechanical properties of the polyurea material were found to be highly dependent on the strain rate.Furthermore,a comparison between model predictions and the experimental stress-strain curves demonstrated that the proposed model can characterize the mechanical properties of polyurea over a wide range of strain rates.Hao Wang Ximin Deng Haijun Wu Aiguo Pi Jinzhu Li Fenglei Huang 2019Defence Technology(防务技术)2019,15,6:13
5Electro-acupuncture at Conception and Governor vessels and transplantation of umbilical cord bloodderived mesenchymal stem cells for treating cerebral ischemia/reperfusion injury显示文摘Mesenchymal stem cell transplantation is a novel means of treating cerebral ischemia/reperfusion,and can promote angiogenesis and neurological functional recovery.Acupuncture at Conception and Governor vessels also has positive effects as a treatment for cerebral ischemia/reperfusion.Therefore,we hypothesized that electro-acupuncture at Conception and Governor vessels plus mesenchymal stem cell transplantation may have better therapeutic effects on the promotion of angiogenesis and recovery of neurological function than either treatment alone.In the present study,human umbilical cord blood-derived mesenchymal stem cells were isolated,cultured,identified and intracranially transplanted into the striatum and subcortex of rats at24 hours following cerebral ischemia/reperfusion.Subsequently,rats were electro-acupunctured at Conception and Governor vessels at 24 hours after transplantation.Modified neurological severity scores and immunohistochemistry findings revealed that the combined interventions of electro-acupuncture and mesenchymal stem cell transplantation clearly improved neurological impairment and up-regulated vascular endothelial growth factor expression around the ischemic focus.The combined intervention provided a better outcome than mesenchymal stem cell transplantation alone.These findings demonstrate that electro-acupuncture at Conception and Governor vessels and mesenchymal stem cell transplantation have synergetic effects on promoting neurological function recovery and angiogenesis in rats after cerebral ischemia/reperfusion.Haibo Yu Pengdian Chen Zhuoxin Yang Wenshu Luo Min Pi Yonggang Wu Ling Wang 2014Neural Regeneration Research2014,9,1:13
6Salt-related structural styles of Kuqa foreland fold belt,northern Tarim basin显示文摘The salt beds of Lower Tertiary developed in the mid-segment of Kuqa foreland fold belt, northern Tarim basin. They considerably controlled structural deformation of the belt. Ac- cording to the field observation, seismic profile interpretation and drilling data, three different structural styles of supra-salt, intra-salt and sub-salt occurred in the Kuqa foreland fold belt. Su- pra-salt structural styles mainly include thrust faults and fault-related sags. Intra-slat structural styles essentially are salt-pillows, intra-salt faults and folds, and salt weld structures. Sub-salt structural styles mainly consist of imbricated thrust faults, duplex structures, pop-up and fault-related folds. It is indicated that great differences exist among supra-salt, intra-salt and sub-salt structures of Kuqa foreland fold belt. The salt-related structures were formed in the same structural stress field. The dynamic mechanism of the salt-related structures is mainly associated with gravitation, compression and plastic flow of salt beds.TANG Liangjie1,2, JIA Chengzao3, PI Xuejun4, CHEN Suping1,2, WANG Zhiyu5, XIE Huiwen4 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, Beijing 102249, China 2. Basin & Reservoir Research Center, University of Petroleum, Beijing 102249, China 3. PetroChina Company Limited, Beijing 100011, China 4. Tarim Oilfield Company, PetroChina Company Ltd., Kurle 841000, China 5. Department of Geology, University of Petroleum, Beijing 102249, China 2004Science China Earth Sciences2004,47,10:12
7A nano-cocrystal strategy to improve the dissolution rate and oral bioavailability of baicalein显示文摘Baicalein(BE) is one of the main active flavonoids representing the variety of pharmacological effects including anticancer, anti-inflammatory and cardiovascular protective activities, but it's very low solubility, dissolution rate and poor oral absorption limit the therapeutic applications. In this work, a nano-cocrystal strategy was successfully applied to improve the dissolution rate and bioavailability of BE. Baicalein-nicotinamide(BE-NCT) nanococrystals were prepared by high pressure homogenization and evaluated both in vitro and in vivo. Physical characterization results including scanning electron microscopy, dynamic light scattering, powder X-ray diffraction and differential scanning calorimetry demonstrated that BE-NCT nano-cocrystals were changed into amorphous state with mean particle size of 251.53 nm. In the dissolution test, the BE-NCT nano-cocrystals performed 2.17-fold and 2.54-fold enhancement than BE coarse powder in FaSSIF-V2 and FaSSGF. Upon oral administration, the integrated AUC0-t of BE-NCT nano-cocrystals(6.02-fold) was significantly higher than BE coarse powder(1-fold), BE-NCT cocrystals(2.87-fold) and BE nanocrystals(3.32-fold). Compared with BE coarse powder, BE-NCT cocrystals and BE nanocrystals, BENCT nano-cocrystals possessed excellent performance both in vitro and in vivo evaluations.Thus, it can be seen that nano-cocrystal is an appropriate novel strategy for improving dissolution rate and bioavailability of poor soluble natural products such as BE.Jiaxin Pi Shuya Wang Wen Li Dereje Kebebe Ying Zhang Bing Zhang Dongli Qi Pan Guo Nan Li Zhidong Liu 2019Asian Journal of Pharmaceutical Sciences2019,14,2:12
8Predictive value of serum uric acid on cardiovascular disease and all-cause mortality in urban Chinese patients显示文摘背景在尿酸(SUA ) 铺平的增加的浆液和心血管的风险之间的协会被辩论十年了。几大研究规定了在心血管的疾病(CVD ) 或脑血管的疾病关于提高的 SUA 层次的临床的意义冲突结果。这研究的目的从 56 ~ 95 年在年龄的 3570 个住院病人是调查在 SUA 和 CVD 和所有原因死亡和他们的潜在的诊断 value.Methods A 之间的关系全部的(平均数(67.WU Yong-quan LI Jue XU Yuan-xi WANG Yong-liang LUO Ying-yi HU Da-yi LIU Wei-jing YANG Ming PI Lin WANG Ming-sheng WANG Ji-yun ZHAO Shu-mei LI Mei-jing 2010Chinese Medical Journal2010,,11:11
9On-orbit Geometric Calibration of Linear Push-broom Optical Satellite Based on Sparse GCPs显示文摘The paper presents a geometric calibration method based on the sparse ground control points (GCPs), aiming to the linear push-broom optical satellite. This method can achieve the optimal estimate of internal and external parameters with two overlapped image pair along the charge-coupled device (CCD), and sparse GCPs in the image region, further get rid of the dependence on the expensive calibration site data. With the calibrated parameters, the line of sight (LOS) of all CCD detectors can be recovered. This paper firstly establishes the rigorous imaging model of linear push-broom optical satellite based on its imaging mechanism. And then the calibration model is constructed by improving the internal sensor model with a viewing-angle model after an analysis on systematic errors existing in the imaging model is performed. A step-wise solution is applied aiming to the optimal estimate of external and internal parameters. At last, we conduct a set of experiments on the ZY-3 NAD camera and verify the accuracy and effectiveness of the presented method by comparison.Yingdong PI Baorong XIE Bo YANG Yiling ZHANG Xin LI Mi WANG 2020Journal of Geodesy and Geoinformation Science2020,3,1:8
10Review of computer-generated hologram algorithms for color dynamic holographic three-dimensional display显示文摘Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene without any special eyewear.In recent years,with the development of computer and optoelectronic technology,computer-generated holograms have attracted extensive attention and developed as the most promising method to realize holographic display.However,some bottlenecks still restrict the development of computer-generated holograms,such as heavy computation burden,low image quality,and the complicated system of color holographic display.To overcome these problems,numerous algorithms have been investigated with the aim of color dynamic holographic three-dimensional display.In this review,we will explain the essence of various computer-generated hologram algorithms and provide some insights for future research.Dapu Pi Juan Liu Yongtian Wang 2022Light(Science & Applications)2022,11,9:8
11Addictive evaluation of cholic acid-verticinone ester, a potential cough therapeutic agent with agonist action of opioid receptor显示文摘Jiu-liang ZHANG Hui WANG Chang CHEN Hui-fang PI Han-li RUAN Peng ZHANG Ji-zhou WU 2009Acta Pharmacologica Sinica2009,30,5:7
12The RNA-binding protein QKI5 regulates primary miR-124-1 processing via a distal RNA motif during erythropoiesis显示文摘Fang Wang Wei Song Hongmei Zhao Yanni Ma Yuxia Li Di Zhai Jingnan Pi Yanmin Si Jiayue Xu Lei Dong Rui Su Mengmeng Zhang Yong Zhu Xiaoxia Ren Fei Miao Wenjie Liu Feng Li Junwu Zhang Aibin He Ge Shan Jingyi Hui Linfang Wang Jia Yu 2017Cell Research2017,27,3:7
13The mechanism and pathway of the ozonation of 4-chlorophenol in aqueous solution显示文摘The removal efficiency of 4-chlorophenol by ozonation was studied, and the reaction mechanism and characteristic of ozonation of 4-chlorophenol were investigated. Ozone and hydroxyl radicals are two strong oxidants during the process of ozonation. The experimental results showed that when there was no scavenger to inhibit OH· radicals, an intermediate product, hydrogen peroxide was formed during the ozonation of 4-chlorophenol. Hydrogen peroxide reacted with ozone at neutral pH and produced hydroxyl radicals. Ozone at the dosage of 113 mg/L could remove 20 mg/L 4-chlorophenol and 39% TOC. With the complete inhibition of hydroxyl radicals, molecular ozone could effectively destroy 4-chlorophenol to form 4-quinone, which was subsequently oxidized to formic acid and oxalic acid. Two reaction pathways of the degradation of 4-chlorophenol by ozone and O3/OH· were proposed in this study. Ozonation is an effective method for reducing 4-chlorophenol, and has potential to practical application.PI Yunzheng WANG Jianlong 2006Science China Chemistry2006,49,4:7
14A Fluorescent Supramolecular Crosslinked Polymer Gel Formed by Crown Ether Based Host-Guest Interactions and Aggregation Induced Emission显示文摘Based on the combination of B21C7/dialkylammonium salt host-guest interactions and tetraphenylethylene(TPE)-based aggregation-induced emission(AIE) effect, a fluorescent supramolecular crosslinked polymer gel was successfully prepared. Compared with the solution of TPE-containing small molecules, this gel exhibited remarkable fluorescence enhancement due to the AIE effect of TPE units. The 'gelation induced fluorescence emission' phenomenon can be explained by the hindered intramolecular rotation of phenyl rings of TPE. Because of the reversibility and stimuli-responsiveness of the B21C7/dialkylammonium salt host-guest interactions, the transition between the fluorescent supramolecular crosslinked polymer gel and the disassembled sol with very weak fluorescence can be realized by adding p H and thermal stimuli. This novel material contributes to the development of supramolecular chemistry, polymer science and fluorescent materials and offers a new method to construct functional supramolecular materials.Xiao-fan Ji Pi Wang Hu Wang 黄飞鹤 2015Chinese Journal of Polymer Science2015,33,6:6
15Multiple constraints QoS multicast routing optimization algorithm in MANET based on GA显示文摘Usually multiple quality of service (QoS) guarantees are required in most multicast applications. This paper presents a multiple con-straints algorithm for multicast traffic engineering in mobile ad hoc networks (MANET). The proposed algorithm is a new version of multiple constraints QoS multicast routing optimization algorithm in MANET based on genetic algorithm (MQMGA). The proposed MQMGA can optimize the maximum link utilization, the cost of the multicast tree, the selection of the long-life path, the average delay and the maximum end-to-end delay. Experimental result shows that the approach is efficient, has promising performance in multicast traffic engineering and for evaluating the route stability in dynamic mobile networks.Baolin Sun Shangchao Pi Chao Gui Yue Zeng Bing Yan Wenxiang Wang Qianqing Qin 2008Progress in Natural Science:Materials International2008,18,3:6
16Aquathermolysis of conventional heavy oil with superheated steam显示文摘This paper presents a new aquathermolysis study of conventional heavy oil in superheated steam.A new high temperature autoclave was designed,where volume and pressure could be adjusted. Aquathermolysis was studied on two different conventional heavy oil samples under different reaction times and temperatures.Experimental results show that aquathermolysis does take place for conventional heavy oil.As reaction time increases,the oil viscosity reduces.However,the reaction will reach equilibrium after a certain period of time and won’t be sensitive to any further reaction time any more. Analysis shows that,while resin and asphaltenes decrease,saturated hydrocarbons and the H/C ratio increase after reaction.The main mechanism of aquathermolysis includes hydrogenization,desulfuration reaction of resin and asphaltenes,etc.Song Guangshou Zhou Tiyao Cheng Linsong Wang Yunxian Tian Guoqing Pi Jian Zhang Zheng 2009Petroleum Science2009,6,3:6
17Nerve autografts and tissue-engineered materials for the repair of peripheral nerve injuries: a 5-year bibliometric analysis显示文摘With advances in biomedical methods, tissue-engineered materials have developed rapidly as an alternative to nerve autografts for the repair of peripheral nerve injuries. However, the materials selected for use in the repair of peripheral nerve injuries, in particular multiple injuries and largegap defects, must be chosen carefully. Various methods and materials for protecting the healthy tissue and repairing peripheral nerve injuries have been described, and each method or material has advantages and disadvantages. Recently, a large amount of research has been focused on tissue-engineered materials for the repair of peripheral nerve injuries. Using the keywords 'peripheral nerve injury', 'autotransplant', 'nerve graft', and 'biomaterial', we retrieved publications using tissue-engineered materials for the repair of peripheral nerve injuries appearing in the Web of Science from 2010 to 2014. The country with the most total publications was the USA. The institutions that were the most productive in this field include Hannover Medical School(Germany), Washington University(USA), and Nantong University(China). The total number of publications using tissue-engineered materials for the repair of peripheral nerve injuries gradually increased over time, as did the number of Chinese publications, suggesting that China has made many scientific contributions to this field of research.Yuan Gao Yu-ling Wang Dan Kong Bo Qu Xiao-jing Su Huan Li Hong-ying Pi 2015Neural Regeneration Research2015,10,6:6
18A field study of advanced municipal wastewater treatment technology for artificial groundwater recharge显示文摘Field studies were conducted to investigate the advanced treatment of the municipal secondary effluent and a subsequent artificial groundwater recharge at Gaobeidian Wastewater Treatment Plant, Beijing. To improve the secondary effluent quality, the combined process of powdered activated carbon adsorption, flocculation and rapid sand filtration was applied, which could remove about 40% dissolved organic carbon (DOC) and 70% adsorbable organic halogens. The results of liquid size exclusion chromatography indicate that in the adsorption unit the removed organic fraction was mainly low molecular weight compounds. The fractions removed by the flocculation unit were polysaccharides and high molecular weight compounds. The retention of water in summer in the open recharge basins resulted in a growth of algae. Consequently, DOC increased in the polysaccharide and high molecular weight humic substances fraction. The majority of the DOC removal during soil passage took place in the unsaturated area. A limited reduction of DOC was observed in the aquifer zone.PI Yun-zheng WANG Jian-long 2006Journal of Environmental Sciences2006,18,6:6
19Combinatorial effects of conception and governor vessel electroacu-puncture and human umbilical cord blood-derived mesenchymal stem cells on pathomorphologic lesion and cellular apoptosis in rats with cerebral ischemia/reperfusion显示文摘OBJECTIVE: To investigate the combinatorial effects of conception and governor vessel electroacupuncture(EA) and human umbilical cord blood-derived mesenchymal stem cells(HUCB-MSCs) on pathomorphologic lesion and cellular apoptosis in rats with cerebral ischemia/reperfusion. METHODS: With the HUCB-MSCs isolated, cultured and identified and the models of cerebral ischemia-reperfusion established, the HUCB-MSCs of passage three were intracranially transplanted and the EA at conception and governor vessels was applied. The pathomorphologic lesion by hematoxylin-eosin staining and the cellular apoptosis by terminal deoxynucleotidyl transferase-mediated nick-end labeling method around the ischemic focus were observed. RESULTS: The cultured adherent HUCB-MSCs exhibited a spindle shape and expressed MSC-specific markers, with the cell purity and proliferation rate significantly increasing after the primary passage. HE staining showed that there were no pathological changes observed in the sham surgery group. However, in the PBS transplantation group, degeneration and necrosis of a great number of nerve cells were seen. In both the HUCB-MSCs transplantation group and the HUCB-MSCs transplantation + EA group, reparative changes of the pathomorphism of the tissue were found. Both combination treatment and simple MSCs treatment were able to improve the pathomorphorlogic lesion following cerebral ischemia and reduce the abnormal TUNEL-positive numbers, with former better than latter. CONCLUSION: HUCB-MSCs improve pathological lesions and inhibit the cellular apoptosis around the cerebral ischemic area. EA at conception and governor vessels also improve pathological lesion and inhibit the cellular apoptosis in rats treated with HUCB-MSCs transplantation, which effects were superior to that of simple HUCB-MSCs transplantation.Zhuoxin Yang Pengdian Chen Haibo Yu Wenshu Luo Min Pi Yonggang Wu Ling Wang Fuxia Yang Yanhua Gou 2013Journal of Traditional Chinese Medicine2013,33,6:5
20Evaluation of emergency tourniquets for prehospital use in China显示文摘客观巨大的出血在武装冲突期间是威胁生活的。止血带是过去常减少在损伤的严重流血的重要医药设备。这研究的目的是以经验为主地评估在中国使用的当前的止血带并且在选择适当止血带提供信息给紧急情况护士。方法五条止血带由 20 个健康参加者是自我适用的。对止血带地点远侧的血流动用脉管的 Doppler 超声被估计。应用程序时间,疼痛,麻木,和另外的参数被评估。结果膀胱止血带和吊起止血带有效地堵塞了有成功的动脉的血流动在两个比 75% 高评价上面、更低的极限。货物带最快适用,拿(7.GUO Jun-yan LIU Yu MA Yan-lan PI Hong-ying WANG Jian-rong 2011Chinese Journal of Traumatology2011,14,3:5
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