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Acta Mechanica Sinica 2008年第1期24卷 91-99页

作者： Xuesong Long Xianghe peng Wenli pi Department of Engineering Mechanics Chongqing University Chongqing 400044 China

A pearlitic steel is composed of numerous pearlitic colonies with random orientations, and each colony consists of many parallel lamellas of ferrite and cementite. The constitutive behavior of this kind of materials may involve both inherent anisotropy and plastic deformation induced anisotropy. A description of the cyclic plasticity for this kind of dual-phase materials is proposed by use of a microstructure-based constitutive model for a pearlitic colony, and the Hill＇s self-consistent scheme incorporating anisotropic Eshelby tensor for ellipsoidal inclusions. The corresponding numerical algorithm is developed. The responses of pearlitic steel BS 11 and single-phase hard-drawn copper subjected to asymmetrically cyclic loading are analyzed. The analytical results agree very well with experimental ones. Compared with the results using isotropic Eshelby tensor, it is shown that the isotropic approximation can provide acceptable overall responses in a much simpler way.

关键词： Pearlitic steel Hill's self-consistent scheme Eshelby tensor Cyclic plasticity Microstructure-basedanalysis

Preparation and properties of calcium sulfate bone cement incorporated with silk fibroin and Sema3A-Ioaded chitosan microspheres

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Frontiers of Materials Science 2015年第1期9卷 51-65页

作者： peng WANG Bin pi Jin-Ning WANG Xue-Song ZHU Hui-Lin YANG Department of Orthopedic Surgery the First Affiliated Hospital of Soochow University Suzhou 215006 China

To search for new bioactive materials which can be used as the substitute of bone repairing and drug carriers, Sema3A-Ioaded chitosan microspheres （SLCM） and silk fibroin （SF） were mixed with calcium sulfate cement （CSC）. SEM, particle size analysis and swelling rate determination were performed to study properties of the microspheres. The drug loading, encapsulation efficiency and drug release rate were determined by ELISA. Microspheres with different SLCM weight contents （0.5%, 1% and 5%） were prepared to determine which one has the strongest mechanical properties and the appropriate setting time. It was revealed that CSC/SF/0.5SLCM has satisfactory mechanical properties, and its in vitro biocompatibility was assessed by MTS. Chitosan microspheres （5-18 μm） were globular, the surface was smooth, and the swelling rate is （77.02 ± 5.57）%. With this formula, the setting time was increased with the addition of SLCM in CSCISF, and the cumulative drug release rate is 44.62% in 28 d. XRD results demonstrate that the main component is calcium sulfate. Also it was found that CSCiSFI 0.5SLCM supports the growth of MC3T3 cells. Thus the preparation of CSCISFIO.5SLCM was reliable, and the products had good structures, physical properties and biocompatibility, appearing to be a promising bone substitute material.

关键词： Sema3A chitosan microsphere sustained release silk fibroin (SF) bone cement

A new species of the genus Scutiger （Anura： Mego- phryidae） from Medog of southeastern Tibet, China

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Zoological Research 2016年第1期37卷 21-30页

作者： Ke JIANG Kai WANG Da-Hu ZOU Fang YAN pi-peng LI Jing CHE State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming Yunnan650223 China Sam Noble Oklahoma Museum of Natural History and Department of Biology University of Oklahoma Norman OK 73072-7029 U.S.A. Tibet University Lhasa Tibet 850000 China Institute of Herpetology Shenyang Normal University Shenyang Liaoning 110034 China

A new species of Scutiger Theobald, 1868 is described from Medog, southeastern Tibet, China, based on morphological and molecular data. The new species was previously identified as Scutiger nyingchiensis, but it can be differentiated from the latter and all other congeners by the following combination of characters：（1） medium adult body size, SVL 50.5-55.6 mm in males and 53.8-57.2 mm in females; （2） maxillary teeth absent; （3） web rudimen- tary between toes; （4） prominent, conical-shaped tubercles on dorsal and lateral surfaces of body and limbs; （5） tubercles covered by black spines in both sexes in breeding condition; （6） a pair of pectoral glands and a pair of axillary glands present and covered by black spines in males in breeding condition, width of axillary gland less than 50% of pectoral gland; （7） nuptial spines present on dorsal surface of first and second fingers, and inner side of third finger in males in breeding condition; （8） spines absent on the abdominal region; （9） vocal sac absent. In addition, the distribution and conservation status of the new species are also discussed

关键词： Eastern Himalayas Tibet Scutiger ny-ingchiensis Scutigerspinosus sp. nov. DNA barcoding

Sustained release of Semaphorin 3A from a-tricalcium phosphate based cement composite contributes to osteoblastic differentiation of MC3T3-E1 cells

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Frontiers of Materials Science 2015年第3期9卷 282-292页

作者： Jin-Ning WANG Bin pi peng WANG Xue-Feng LI Hui-Lin YANG Xue-Song ZHU Department of Orthopaedic Surgery The first Affiliated Hospital of Soochow University Suzhou 215006 China

The reinforcement of calcium phosphate materials with silk fibroin （SF） has been one of the strategies to overcome the brittleness. However, the lack of osteoinductivity may still restrict their further use. This study aimed to investigate the biocompatibility and osteogenesis capacity of a novel Semaphorin 3A-loaded chitosan microspheres/SF/a-tricalcium phosphate composite （Sema3A CMs/SF/a-TCP） in vitro. Sema3A was first incorporated into CMs, and the Sema3A CMs/SF/a-TCP composite was then prepared. The morphology of the CMs was observed using SEM. The in vitro release kinetics, cytotoxicity, and cell compatibility were evaluated, and the real-time quantitative polymerase chain reaction （RT-qPCR） and activity of alkaline phosphatase （ALP） were used to evaluate the osteogenesis capacity of the composite. The in vitro release of Sema3A from the Sema3A CMs/SF/a-TCP composite showed a temporally controlled manner. The extract of the Sema3A CMs/SF/a-TCP composite presented no obvious side effect on the MC3T3-E1 cell proliferation, nor promote cell proliferation. The MC3T3-E1 cells were well-spread and presented an elongated shape on the Sema3A CMs/SF/a-TCP composite surface; the ALP activity and the osteogenic-related gene expression were higher than those seeded on the surface of the CMs/SF/a-TCP and SF/a-TCP composites. In conclusion, Sema3A CMslSF/a-TCP has excellent biocompatibility and contributes to the osteoblastic differentiation of MC3T3-E1 cells.

关键词： α-tricalcium phosphate (o-TCP) silk fibroin (SF) Semaphorin 3A osteo-blastic differentiation MC3T3-EI cell

Rapid variability in S5 0716+714

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Research in Astronomy and Astrophysics 2011年第11期11卷 1311-1316页

作者： Jun-Hui Fan Jun Tao Bo-Chen Qian Yi Liu Jiang-He Yang Fei-peng pi Wei Xu Center for Astrophysics Guangzhou University Guangzhou 510006 China Astronomy Science and Technology Research Laboratory of Department of Education ofGuangdong Province Guangzhou 510006 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Joint Institute for Galaxies and Cosmology Shanghai Astronomical Observatory and Universityof Science and Technology of China Chinese Academy of Sciences Shanghai 200030 China Department of Physics and Electronics Science Hunan University of Arts and Science Changde415000 China

S5 0716＋714 is one of the targets in our long term blazar monitoring program carried out with the 1.56-m telescope at Sheshan Station of Shanghai Astronomical Observatory, China. We report a very rapid variability of △I=0.611±0.102 mag over 3.6 min detected in our monitoring program during the period from December 2000 to March 2007. The rapid variability suggests that the mass for the central black hole is log（M/M⊙） = 7.68 - 8.38.

关键词： galaxies active-BL Lacertae objects general-galaxies jets

A new alkaloid from Lycoris aurea

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Chinese Chemical Letters 2009年第11期20卷 1319-1320页

作者： Hui Fang pi peng Zhang Han Li Ruan Yong Hui Zhang Han Dong Sun Ji Zhou Wu Faculty of Pharmaceutical Sciences Tongji Medical College of Huazhong University of Science and Technology Hubei Key Laboratory of Natural Medicinal Chemistry and Resources Evaluation Wuhan 430030 China

A new alkaloid was isolated from the bulbs of Lycoris aurea （L＇Herit.） Herb. Its structure was established as 3-o-ethyltazettinol through chemical and spectroscopic studies including 2D NMR.

关键词： Lycoris aurea 3-o-Ethyltazettinol

Relationship between infection,physical and mental health and exercise habits of some Chinese residents after recovery from COVID-19

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Sports Medicine and Health Science 2024年第3期6卷 260-265页

作者： Aiyi Zhou Yuncan Xia peng pi Zhengzhen Wang Hongmei Huang Yan Wang School of Sports Medicine and Rehabilitation Beijing Sport UniversityBeijingChina ENNOVA Institute of Life Science and Technology Enn GroupLangfangHebei ProvinceChina

This study aimed to determine the infection status,exercise habits,anxiety levels,and sleep quality in Chinese residents who recovered from infection during the period of coronavirus disease 2019(COVID-19)*** also aimed to investigate the influencing factors of recovery status and aid in improving intervention measures for COVID-19 *** study is a sub-study nested within a cross-sectional investigation of infection and physical and mental health among partially recovered residents in all 34 provincial areas of China during the COVID-19 pandemic.A total of 1013 participants(374 males and 639 females)completed the *** endurance was significantly lower after infection than before infection(p<0.001).Women(3.924.97)exhibited higher levels of anxiety than men(3.334.54,p?0.015).The sleep score was significantly higher after infection(8.277.05)than before infection(4.174.97,p<0.001).The active and regular exercise groups exhibited significantly shorter durations of fever than the sedentary and irregular groups(p?0.033;p?0.021).Additionally,the active group demonstrated significantly fewer recovery days([7.323.24]days)than the sedentary group([7.663.06]days,p?0.035).We found a correlation between age and the recovery time of symptoms after *** noted that a greater number of symptoms corresponded to poorer cardiopulmonary fitness and sleep *** who engage in sedentary lifestyles and irregular exercise regimens generally require prolonged recovery ***,incorporating moderate exercise,psychological support,sleep hygiene and other health interventions into post-COVID-19 recovery measures is imperative.

关键词： COVID-19 infection Post-recovery of COVID-19 Recovery status Cardiopulmonary endurance Anxiety Sleep quality

凹耳蛙及无尾两栖动物发声系统形态学研究进展

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四川动物 2010年第1期29卷 151-155页

作者：李丕鹏沈阳师范大学中国两栖爬行动物保护与繁育研究中心辽宁省生物进化与生物多样性重点实验室沈阳110034

两栖动物是最早应用声讯进行雌雄识别、繁殖和防御的脊椎动物,其发声器官包括喉部器官和(或)声囊。近来的研究表明我国特有两栖动物——凹耳蛙不仅具有非常复杂的鸣叫特点,而且能发出超声音频。本文总结了有关凹耳蛙的生物学特点、无尾... 详细信息

两栖动物是最早应用声讯进行雌雄识别、繁殖和防御的脊椎动物,其发声器官包括喉部器官和(或)声囊。近来的研究表明我国特有两栖动物——凹耳蛙不仅具有非常复杂的鸣叫特点,而且能发出超声音频。本文总结了有关凹耳蛙的生物学特点、无尾两栖动物发声器官的研究进展,指出凹耳蛙在无尾两栖动物发声器官的生态和进化形态学研究中的重要地位。

关键词：两栖动物凹耳蛙发声器官生态形态学进化形态学

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卡西裸趾虎一新亚种记述

动物分类学报 2007年第3期32卷 733-737页

作者：李丕鹏辽宁省生物进化与生物多样性重点实验室

裸趾虎属分布于亚洲热带地区。卡西裸趾虎分布于印度、缅甸和中国西藏的墨脱县。通过对采自西藏察隅县的标本分析和比较，认为其是卡西裸趾虎Crytodactylus khasiensis的1个新亚种，命名为卡西裸趾虎察隅亚种Crytodactylus khasiensis c... 详细信息

裸趾虎属分布于亚洲热带地区。卡西裸趾虎分布于印度、缅甸和中国西藏的墨脱县。通过对采自西藏察隅县的标本分析和比较，认为其是卡西裸趾虎Crytodactylus khasiensis的1个新亚种，命名为卡西裸趾虎察隅亚种Crytodactylus khasiensis cayuensis。新亚种具卡西裸趾虎的基本特征，但新亚种与卡西裸趾虎指名亚种***、缅甸亚种Crytodackylus ***区别明显，不同在于：1）上唇鳞9～12枚，下唇鳞8～11枚；2）体中部腹面横列鳞28～34枚；3）雄性具肛前孔6～9个。仅分布于西藏察隅县下察隅镇。

关键词：壁虎科裸趾虎属新亚种西藏

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蝌蚪唇齿式的表述

四川动物 2006年第2期25卷 414-416页

作者：李丕鹏沈阳师范大学两栖爬行动物多样性课题研究组沈阳110034

蝌蚪的唇齿式在研究蝌蚪的生物学特性和生物多样性中具有重要的作用,本文比较详细介绍了目前国内外5种蝌蚪唇齿式表达方式,并比较了它们的优缺点。

关键词：两栖动物蝌蚪唇齿式