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44篇 您的检索式:作者名="Benyuan"
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1The study on the safety and efficacy of amnion graft for preventing the recurrence of moderate to severe intrauterine adhesions显示文摘Transcervical resection of adhesion(TCRA)is the standard treatment for the intrauterine adhesions,but the recurrence of adhesions is a tough problem for the gynecologist.In addition,the therapeutic strategy after TCRA about prevention of recurrence remains controversial especially for the patients with moderate to severe intrauterine adhesions(IUAs).Hence,we designed this study to explore the safety and efficacy of fresh amnion grafts for preventing the recurrence after TCRA for patients with moderate to severe IUAs.One hundred patients with moderate to severe IUAs who presented with a history of hypomenorrhea,amenorrhea and infertility were included in the study from January 2015 to December 2017.Patients were divided into amnion group(52 patients)and chitosan group(48 patients).Fresh amnion grafts or intrauterine injections of chitosan were administered after TCRA.Transvaginal ultrasonography(TVUS)and hysteroscopy were performed at the first and third month after the operation.The surgical procedures for all patients were completed successfully without relevant complications.In amnion group,8 patients exhibited relapse in the first month and 2 patients in three months after surgery;in chitosan group,23 women exhibited relapse in the first month and 18 patients in three months after surgery.Statistical analysis revealed that the recurrence rate of adhesion in amnion group was significantly lower than those of chitosan group in the first and three months after surgery(P1=0.000,P2=0.000).After TCRA,fresh amnion graft plays a significant role in preventing further adhesions than injections of chitosan.Changjiang Li Aiqi Cai Congcong Sun Benyuan Wu Xinpei Chen Yanhua Mao Yingfeng Zhang Yating Gou Jie Yu Yuhan Wang Huanhuan Yu Jia Wang 2020Genes & Diseases2020,7,2:11
2Iron-group electrocatalysts for ambient nitrogen reduction reaction in aqueous media显示文摘Electrochemical nitrogen reduction reaction(NRR)is considered as an alternative to the industrial Haber-Bosch process for NH3 production due to both low energy consumption and environment friendliness.However,the major problem of electrochemical NRR is the unsatisfied efficiency and selectivity of electrocatalyst.As one group of the cheapest and most abundant transition metals,iron-group(Fe,Co,Ni and Cu)electrocatalysts show promising potential on cost and performance advantages as ideal substitute for traditional noble-metal catalysts.In this minireview,we summarize recent advances of iron-group-based materials(including their oxides,hydroxides,nitrides,sulfides and phosphides,etc.)as non-noble metal electrocatalysts towards ambient N2-to-NH3 conversion in aqueous media.Strategies to boost NRR performances and perspectives for future developments are discussed to provide guidance for the field of NRR studies.Benyuan Ma Haitao Zhao Tingshuai Li Qian Liu Yongsong Luo Chengbo Li Siyu Lu Abdullah M.Asiri Dongwei Ma Xuping Sun 2021Nano Research2021,14,3:8
3Porous LaFeO3 nanofiber with oxygen vacancies as an efficient electrocatalyst for N2 conversion to NH3 under ambient conditions显示文摘Electrocatalytic N2 reduction to NH3 under ambient conditions is an eco-friendly and sustainable alternative to the traditional Haber-Bosch process. However, inhibited by the high activation barrier of N2, this process needs efficient electrocatalysts to adsorb and activate the N2, enabling the N2 reduction reaction(NRR). Herein, we report that porous LaFeO3 nanofiber with oxygen vacancies acts as an efficient NRR electrocatalyst with abundant active sites to enhance the adsorption and activation of N2. When tested in 0.1 M HCl, such electrocatalyst achieves a high Faradaic efficiency of 8.77% and a large NH3 yield rate of 18.59 μg h–1 mgcat–1.at-0.55 V versus reversible hydrogen electrode. This catalyst also shows high long-term electrochemical stability and excellent selectivity for NH3 formation. Density functional theory calculations reveal that, by introducing oxygen vacancy on LaFeO3, the subsurface metallic ions are exposed with newly localized electronic states near the Fermi level, which facilitates the adsorption and activation of N2 molecules as well as the subsequent hydrogenation reactions.Chengbo Li Dongwei Ma Shiyong Mou Yongsong Luo Benyuan Ma Siyu Lu Guanwei Cui Quan Li Qian Liu Xuping Sun 2020Journal of Energy Chemistry2020,29,11:6
4Microdissection and amplification of the chromosome arm 5S in a rice telo-tetrasomic显示文摘The rice aneuploids with telochromosomes are ideal genetic stocks for chromosome arm identification and microdissection. A rice telo-tetrasomic line with two extra short arms of chromosome 5 (5S) was used in the present study. The arms of 5S were microdissected from the prometaphase cells in mitosis and amplified with linker adaptor PCR (LA-PCR). The amplified fragments, ranging from 200-3000 bp, were confirmed to be from the rice chromosome arm 5S by the rice STS and microsatellite markers.Zhukuan Cheng Huihuanq Yan Benyuan Dang Zanmin Hu Minghong Gu Lihuang Zhu 1998Chinese Science Bulletin1998,43,7:4
5Introduction of pokeweed antiviral protein cDNA into Brassica napus and acquisition of transgenic plants resistant to viruses显示文摘Using cotyledonary petioles as explants, the PAP cDNA controlled by wound-in-ducible promoter has been introduced into Brassica napus by coculture with Agrobacterium tumefaciens and laser microbeam puncture respectively. Regenerated plants resistant to gen-tamycin have been selected out. PCR amplification and Southern blotting analysis indicated that PAP cDNA together with wound-inducible promoter had been integrated into Brassica genome with transformation frequencies of 2.0% and 1.7% for two transformation methods respectively. The test of virus challenge showed that these transgenic Brassica plants were resistant in different degrees to mechanically inoculated TuMV.ZHANG Haiyan , TIAN Yingchuan , ZHOU Yihua , DANG Benyuan LAN Haiyan , SONG Guiying , WANG Lanlan , LIU Guizhen , ZHANG Lihua and CHEN ZhenghuaInstitute of Genetics , Chinese Academy of Sciences , Beijing 100101, China Institute of Microbiology , Chinese Academy of Sciences , Beijing 100080, China 1999Chinese Science Bulletin1999,44,8:3
6Novel Phenomenon on Valence Unvariation of Doping Ion in Yb:YAG Transparent Ceramics Using MgO Additives显示文摘Yb:YAG nanopowders were synthesized by the alcohol-water co-precipitation method adding MgO as sintering additives. Appropriate amount of MgO adding can restrict the agglomeration and reduce the particle size of Yb:YAG powders. When the MgO content was 0.04wt%, well-dispersed Yb:YAG powders with ellipsoidal particles of less than 100 nm diameter were obtained. The experimental results showed the valence variation of doping ion Yb3+ would not appear when adding MgO as sintering additives, so ceramics showed colorless transparent instead of green due to Yb2+ color center using traditional SiO2 as additives. The transmission of the sintered Yb:YAG ceramics can reach 80.6% even without annealing. Ceramic morphology showed that the grains had uniform-distribution with the size of 10 μm or so, and no impurity and pore existed in the grain boundary and crystalline while using optimal sintering conditions.卢忠文 卢铁城 WEI Nian MA Benyuan ZHANG Wei LI Feng GUAN Yongbing 2013Journal of Wuhan University of Technology(Materials Science)2013,28,2:2
7Construction of single-chromosome DNA library from Lilium regale Wilson显示文摘A protocol of simple rapid microdissection of single-chromosome, amplification and cloning of its DNA from Lilium regale Wilson is described. Single-chromosome, microdissected by micromanipulator, was put into a 0 5 mL Eppendorf tube and digested with Sau3A, and then the Sau3A linker adaptors were ligated to the ends of DNA fragments. After 2 rounds of PCR amplification with one chain of linker adaptor as primer, the PCR products thus obtained have a length of 300-2 500 base pairs (bp) with predominant fragments at about 1 000 bp. Southern blot analysis confirmed that the PCR products originated from the genome of Lilium regale Wilson. By cloning the amplification products from the second round of PCR, single-chromosome DNA library was constructed, in which about as many as 100 000 recombinant clones were produced. A total number of 84 clones were analysed, and it was revealed that the inserts ranged in size from 300 to 1 800 bp, with an average of 780 bp. Compared with the methods described in other literature, this protocol, eliminating the need for enzymatic digestion and ligating micromanipulation of chromosomal DNA in nanoliter volumes, permits the efficient amplification of single chromosome (not tens of chromosomes as reported before) and the fragments (780 bp in average) cloned in this study are longer than those reported before (650 bp in average).Benyuan Dang Zanmin Hu Yihua Zhou Lihua Cui Lanlan Wang Liangcai Li Zhenghua Chen 1998Chinese Science Bulletin1998,43,5:2
8A recursive method for phase retrieval in Fourier transform domain显示文摘In terms of the cascading property and additivity of the order of the fractional Fourier transform, a new recursive algorithm is presented to implement phase retrieval from intensity measurements in the Fourier transform domain. This approach simplifies significantly computational manipulations compared with conventional iterative algorithms.Wenxiang Cong Nanxian Chen Benyuan Gu 1998Chinese Science Bulletin1998,43,1:2
9Phase property of the transmission through a quantum dot 显示文摘Xu H Q Gu Benyuan 2001Journal of Physics: Condensed Matter2001,13,15:1
10Microdissection of a single chromosome and construction of the microclone library from soybean显示文摘Yihua Zhou Benyuan Dang Huai Wang Zanmin Hu Lanlan Wang Zhenghua Chen 2001Euphytica2001,,2:1
11Microdissection and microcloning of rye (Secale cereale L.) chromosome 1R显示文摘Yihua Zhou Zanmin Hu Benyuan Dang Huai Wang Xiangdong Deng Lanlan Wang Zhenghua Chen 1999Chromosoma1999,,4:1
12Gerchberg-Saxton and Yang-Gu algorithms for phase retrieval in a nonunitary transform system:a comparison显示文摘Guozhen Yang Bizhen Dong Benyuan Gu 1994Applied Optics1994,33,:1
13Coordina- tion and phase separation in polyvinylpyrrolidone-neodymium chloride complex 显示文摘XIE Aifang ZHANG Zebo GU Benyuan 2002J Mater Sci Lett2002,21,4:1
14Exploiting data fusion to improve the coverage of wireless sensor networks显示文摘Tan Rui Xing Guoliang Liu Benyuan 0,,2:1
15Large absolute band gap in 2D anisotropic photonic crystals 显示文摘Li Zhiyuan Gu Benyuan Yang Guozhen 1998Phys Rev Lett1998,81,12:1
16An adaptive first-order polarization-mode dispersion compensation system aided by polarization scrambling,Theory and Demonstration 显示文摘Pua Hok Yong Peddanarappagarl Kumar Zhu Benyuan 2000Journal of Lightwave Technology2000,18,6:1
17Chromosome microdissection by laser microbeam, chromosomal fragment isolation and amplification in vitro in barley (Hordeum vulgare L.)显示文摘A method for microdissection, isolation and amplification of plant chromosomal fragments using laser microbeam and a glass microneedle was established. Firstly, 7H chromosome of barley (Hordeum vulgare L.) was dissected by Nd: YAG laserbeam with suitable parameters and the fragment comprising a satellite was isolated with a glass microneedle which was fixed on a micromanipulator. Then, the chromosomal fragment DNA was amplified by LA_PCR (linker adaptor PCR) for two rounds. The size of the DNA fragments of PCR products varied from 500-3 000 bp and the PCR products originated from the genome of barley were verified by Southern hybridization. Compared with previous reports, there are some advantages in this research. The performance is easier, the dissection is more precise and the cost is low. It also permits efficient amplification with only one single chromosome fragment. Laser microbeam_glass microneedle method may be useful in the microdissection of special chromosome regions, especially in plants with middle or small chromosomes.Huai Wang Yihua Zhou Benyuan Dang Zanmin Hu Lanlan Wang Liangcai Li Zhenghua Chen 1998Chinese Science Bulletin1998,43,10:1
18On the amplitude phase retrieval problem in an optical system involved non unitary trans formation显示文摘Yang Guozhen Gu Benyuan Dong Bizhen 1987Optik1987,75,2:1
19Dynamic coverage of mobile sensor networks显示文摘Liu Benyuan Dousse O Nain P 2013IEEE Transactions on Parallel and Distributed Systems2013,24,2:1
20Anadaptive first-order polarization- mode dispersioncompensation system aided by polarization scrambling: theoryand demonstration 显示文摘Hok Yong Pua K Peddanarappagari Zhu Benyuan 2000Journal of Lightwave Technology2000,18,6:1
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