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Activity budget of Rhinopithecus bieti at Tibet:Effects of day length,temperature and food availability

Current Zoology 2010年第6期56卷 650-659页

作者： Zuofu xiang Sheng HUO wen XIAO College of Life Science and Technology Central South University of Forestry and Technology Changsha 410004 China Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650229 Yunnan China Institute of Eastern-Himalaya Biodiversity Research Dali University Dali 671000 Yunnan China

How animals allocate their time to various activities has significant consequences for their survival because they reflect the different constraints on time-energy balances. Many ecological variables, such as day length, temperature, food availabil- ity, are supposed to effect on activity budgets allocation of temperate primates. To examine the potential influence of these three variables, the activity budgets ofRhinopithecus bieti was studied at Xiaochangdu, Tibet from June 2003 to March 2005. Pearson correlations were utilized to assess potential relationships between activity budget and day length, food availability and temperature, and stepwise multiple regressions to identify the priority of resting and other activities （activities besides feeding, moving and resting）. Time spent resting and doing ＂other activities＂ is positively related to day length, temperature and food availability. No significant correlations were found between feeding/moving time and any of these variables. This suggests that foraging time （feeding ＋ moving） takes priority over rest and other activities. Day length and foraging time （as independent variables） were related to the time spent in the other two activities besides feeding/moving （as dependent variables）. Both time spent resting and in ＂other activities＂ were highly significant positive functions of day length, with the latter a highly significant negative function of feeding time and moving time. Resting time may therefore be interpreted as taking priority over ＂other activities＂ time. These results provide further evidence of the importance of day length, temperature and food availability to seasonal activity budgets [Current Zoology 56 （6）： 650q559, 2010].

关键词： Activity budget Rhinopithecus bieti Day length Temperature Food availability Activity pattem

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Decolorization of reactive brilliant red K-2BP by white rot fungus under sterile and non-sterile conditions

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Journal of Environmental Sciences 2006年第3期18卷 428-432页

作者： GAO Da-wen wen xiang-hua QIAN Yi State Key Joint Laboratory of Environmental Simulation and Pollution Control Department of Environment Science and Engineering TsinghuaUniversity Beijing 100084 China.

Almost all the studies both domestic and international using white rot fungus for dye wastewater treatment are performed under sterile conditions. However, it is obviously unpractical that wastewater with dyes is treated under sterile conditions. A feasible study was made for using white rot fungus Phanerochaete chrysosporium to degrade reactive brilliant red K-2BP dye under non-sterile conditions. The results showed that there was no decolorizing effect under non-sterile condition if white rot fungus was incubated under non-sterile condition, and the decolorization was always near to 0% during decolorizing test for 3 d; in the meantime, a lot of yeast funguses were found in liquid medium when white rot fungus was incubated under non-sterile conditions; however, if white rot fungus was incubated under sterile condition firstly, its decolorization was above 90% under non-sterile condition, which was similar to that of sterile condition. So we point out that the treating process for wastewater with dyes should be divided into two stages. The first stage is that white rot fungus should be incubated under sterile conditions, and the second stage is that reactive brilliant red K-2BP is decolorized under non-sterile conditions. The method not only save the operation cost which decolorizing reactive brilliant red K-2BP under sterile condition, but also provide the feasibility for using white rot fungus to degrade wastewater with dyes under non-sterile conditions.

关键词： white rot fungus Phanerochaete chrysosporium reactive brilliant red K-2BP decolorization non-sterile condition

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阻碍角对6063铝合金空心型材“T字位”表面凹痕缺陷的影响

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轻合金加工技术 2021年第3期49卷 49-53页

作者：向文杰王泽群张婷蕊王孟君潘学王岗中南大学有色金属材料科学与工程教育部重点实验室湖南长沙410083 广亚铝业有限公司广东佛山528237

在空心铝型材挤压生产中,型材“T字位”表面常常出现凹痕,导致型材报废。对此,利用Q-Form对6063铝合金空心型材的挤压过程进行数值模拟,获得了型材“T字位”区域的金属流速分布,在此基础上,通过优化模具结构,在型材左右悬臂位置增设一... 详细信息

在空心铝型材挤压生产中,型材“T字位”表面常常出现凹痕,导致型材报废。对此,利用Q-Form对6063铝合金空心型材的挤压过程进行数值模拟,获得了型材“T字位”区域的金属流速分布,在此基础上,通过优化模具结构,在型材左右悬臂位置增设一微小阻碍角,使型材“T字位”局部区域金属流速平衡。试模结果表明:型材表面凹痕消失,符合生产要求。

关键词： 6063铝合金空心型材挤压模具结构数值模拟凹痕

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Osseous Rosai-Dorfman disease of tibia in children:A case report

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World Journal of Clinical Cases 2021年第6期9卷 1416-1423页

作者： Djandan Tadum Arthur Vithran Jian-Zhou Wang Feng xiang jie wen Sheng Xiao wen-Zhong Tang QianChen Department of Pediatric Orthopedic Hunan Provincial People's Hospitalthe First Affiliated Hospital of Hunan Normal UniversityChangsha 410013Hunan ProvinceChina

BACKGROUND Rosai-Dorfman disease(RDD),or sinus histiocytosis with massive lymphadenopathy,is a benign histiocytic *** involvement is common,occurring in>40%of patients,but bone involvement occurs in<10%of *** addition,primary bone RDD is extremely *** majority of patients are adolescents and young adults,and the mean age at onset is *** SUMMARY We report an 8-year-old Chinese girl who presented to our hospital with an insidious onset of swelling and pain in the middle shaft of her right tibia for 4 *** performed total surgical resection of the right tibia lesion and allograft transplantation.A good prognosis was confirmed at the 6 mo *** and swelling symptoms were totally relieved,range of motion of her right knee and ankle returned to normal,and there was no clinical evidence of lesion recurrence at last follow *** case is the second reported case of osseous RDD without lymphadenopathy in the shaft of the tibia of a *** Extranodal RDD is a rare disease and can be misdiagnosed *** resection and allograft transplantation are an option to treat extranodal RDD in children with good short term *** orthopedist should be aware of this rare disease,especially extranodal involvement.

关键词： Osseous Rosai-Dorfman disease Children tibia pain and swelling Lesion resection Allograft transplantation Good prognosis Rare benign disorder Case report

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TN测定过程中空白值偏高原因分析

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广州化工 2019年第1期47卷 90-91,94页

作者：郑静熊萍陶海波李新宇严新杰张雨晴项文杰赵芝清衢州学院化学与材料工程学院浙江衢州324000

TN测定过程中影响因素较多,易造成空白吸光度值偏高。针对TN空白值偏高问题,设置了无氨水类型、比色管包裹方式、碱性过硫酸钾存放条件及纯度等影响因素,进行了探究。实验结果表明:无氨水类型、包裹方式、碱性过硫酸钾存放条件对总氮测... 详细信息

TN测定过程中影响因素较多,易造成空白吸光度值偏高。针对TN空白值偏高问题,设置了无氨水类型、比色管包裹方式、碱性过硫酸钾存放条件及纯度等影响因素,进行了探究。实验结果表明:无氨水类型、包裹方式、碱性过硫酸钾存放条件对总氮测定精度造成的影响并不大;而当对碱性过硫酸钾分别重结晶一次、二次和三次后,空白吸光度值分别为1. 292、0. 033和0. 033,可见碱性过硫酸钾纯度是造成空白吸光度偏大的主要因素。

关键词： TN 紫外分光光度法碱性过硫酸钾纯度

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The Crystallization Behavior of L-Poly(lactic acid)/Polypropylene Blends:The Acceleration for Both L-Poly(lactic acid)and Polypropylene

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Chinese Journal of Polymer Science 2024年第6期42卷 775-786页

作者： Shuang-Cheng Li Wei-Jia Zhou wen-jie Wu Jun Shao Shui-Liang Chen Hao-Qing Hou Sheng xiang College of Chemistry&Chemical Engineering and Nanofiber Engineering Center of Jiangxi Province Jiangxi Normal UniversityNanchang330022China National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal UniversityNanchang330022China wenzhou Institute University of Chinese Academy of SciencesWenzhou325001China

For a polymer/polymer dismissible blend with two crystallizable components,the crystallization behavior of different components and the reciprocal influences between different crystals are interesting and important,but did not investigate in *** this study,the L-poly(lactic acid)/polypropylene(PLLA/PP)blends with different weight ratios were prepared by melt mixing and the crystallization behavior of the blends were *** showed that the crystalline structures of PLLA and PP were not altered by the *** the crystallization of PLLA,both the diffusion of chain segments and crystallization rate were enhanced under the existence of PP *** the crystallization of PP,its crystallization rate was depressed under the existence of amorphous PLLA molecular *** the PP crystallized from the existence of PLLA crystals,although the diffusion rate of PP was reduced by PLLA crystals,the nucleation positions were obviously enhanced,which accelerated the formation of PP *** investigation would supply more basic data for the application of PLLA/PP blend.

关键词： L-poly(lactic acid) Polypropylene Blends Crystalization behavior Crystallization acceleration

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Interfacial Chain Entanglements Induced Melt Memory Effect in Poly(ε-caprolactone)/Silica Nanocomposites

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Chinese Journal of Polymer Science 2022年第11期40卷 1451-1465页

作者： xiang Liu wen-Zhi Cui Wei Yu Advanced Rheology Institute Department of Polymer Science and EngineeringShanghai Key Laboratory of Electrical Insulation and Thermal AgeingState Key Laboratory for Metal Matrix Composite MaterialsShanghai Jiao Tong UniversityShanghai200240China

It is known that the enhanced melt memory effect is strongly correlated with the retarded chain ***,previous studies using differential scanning calorimetry(DSC)showed a weakened or even vanished melt memory in polymer nanocomposites,although adding nanoparticles in polymers often reduces chain *** this work,we added two kinds of silica nanoparticles,O15 and W22 nanoparticles(with low and high surface silanol density,respectively),to poly(ε-caprolactone)(PCL),where the degree of chain entanglements near nanoparticles increases,and chain dynamics is gradually retarded with increasing silica *** strongly aggregated W22 nanoparticles show significant heterogeneous nucleation,while well-dispersed O15 nanoparticles exhibit very weak heterogeneous *** contrast to the restrained self-nucleation effects during the rapid non-isothermal crystallization of two nanocomposites,we found evident melt memory effects during the slow isothermal crystallization in PCL/O15 nanocomposites as indicated by DSC and polarized light microscopy(PLM)*** melt memory becomes stronger with more O15 nanoparticles,but depends non-monotonically on the loadings of W22 *** lifetime of the melt memory effects matches the chain re-entanglement time of the SN melts of nanocomposites,which is consistent with our previous work on PCL miscible *** complicated influence of silica on nucleation and crystal growth is induced by the spatial inhomogeneity of chain entanglements in the silica-filled PCL *** decrease in the entanglement density of the interfacial chains in the SN melts of nanocomposites is conducive to nucleate under slow isothermal crystallization,but the chain mobility is still greatly restrained by the nanoparticles,causing the slow growth rate of spherulites and the difficulty to form nuclei under fast non-isothermal crystallization.

关键词： PCL Silica nanocomposite Self-nucleation crystallization

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Fast tool to evaluate 3D movements of the foot-ankle complex using multi-view depth sensors

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Medicine in Novel Technology and Devices 2023年第1期17卷 107-115页

作者： Donggang Jiang jie-wen Li xiang Geng Xin Ma wen-Ming Chen Academy for Engineering and Technology Fudan UniversityShanghai200433China Department of Orthopaedics Huashan Hospital Affiliated to Fudan UniversityShanghai200040China

Movement disorders of the human foot-ankle complex are a common occurrence,owing to the altered joint mechanics during foot-ground *** of such movement disorders will require quantitative tools to evaluate in-vivo foot motions,in particular to the multi-segment/joint foot kinematics(MSFK),during ***,current MSFK analysis largely rely on conventional technologies,such as skin-marker based motion capturing,video fluoroscopy and dynamic 3D scanning,being extremely time-consuming and *** this work,a novel movement tracking method,named the point-cloud foot analysis(PFA),was implemented with multi-view depth sensors,to allow fast evaluations of 3D motions of the foot-ankle complex during *** analysis obtained by the PFA methods and their accuracy relative to the conventional MSFK analysis methods were *** 3D surface reconstructions of the foot-ankle complex were achieved with a RMSE less than 2 *** was proven to be feasible to track multi-segment foot motions in both healthy and diseased subjects during walking conditions,with the processing time decreased from more than 4-6 h to less than 6 min for the entire flow of the contact phase *** PFA method can be useful for fast evaluations of the movement disorders of the foot-ankle complex in diagnostics and design of therapeutic interventions and rehabilitation programs for clinical applications.

关键词： Biomechanics Foot model Joint mechanics Movement disorders Depth sensor

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Biological Cycles of Mineral Elements in a Young Mixed Stand in Abandoned Mining Soils

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Journal of Integrative Plant Biology 2007年第9期49卷 1284-1293页

作者： Da-Lun Tian wen-Hua xiang wen-De Yan wen-Xing Kang xiang-wen Deng Zhu Fan Research Section of Ecology Central-South University of Forestry & Technology Changsha 410004 China

Phytoremediation as a sustainable and inexpensive technology based on the removal of pollutants from the environment by plants is becoming an increasingly important objective in plant research. In this study, biological cycles of five nutrient elements （N, P, K, Ca, and Mg） and eight heavy metal elements （Fe, Cu, Zn, Mn, Cd, Ni, Pb and Co） were examined in young paniculed goldraintree （Koelreuteria paniculata Laxm） and common elaeocarpus （Elaeocarpus decipens） mixed stands in an abandoned mining area. We found that after vegetation restoration in abandoned mining areas, the organic matter and concentrations of nutrient elements were significantly increased and the heavy metal elements were significantly decreased, the annual retention, uptake and return were 75.0, 115.4, and 40.3 kg/hm^2 for nutrient elements, and 1 878.0, 3 231.0 and 1 353.0 g/hm^2 for heavy metal elements, respectively, with the utilization coefficient, cycling coefficient and turnover rate of 0.92, 0.35 and 0.32 for nutrient elements, and 1.24, 0.42 and 1.92 for heavy metal elements, respectively. Our results suggested that the vegetation restoration in abandoned mining areas had significant effects in improving environmental conditions, enhancing soil available nutrients, and ensuring human health.

关键词： abandoned mining areas biological cycle common elaeocarpus (Elaeocarpus decipens) heavy metal elements mixed stand paniculed goldraintree (Koelreuteria paniculata).

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Relationship Between Microstructures and Microhardness in High-Speed Friction Stir Welding of AA6005A-T6 Aluminum Hollow Extrusions

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Acta Metallurgica Sinica(English Letters) 2020年第1期33卷 115-126页

作者： xiang-Qian Liu Hui-jie Liu Yan Yu Luoyang Ship Material Research Institute Luoyang 471023China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

AA6005 A-T6 aluminum hollow extrusions were friction stir welded at a fixed high welding speed of 2000 mm/min and various rotation *** results showed that the heat-aff ected zone(HAZ)retained the similar grain structure as the base material except some grain coarsening,and the density of dislocations andβ′precipitates were almost unchanged,indicating that the high welding speed inhibited the coarsening and dissolution ofβ″precipitates via fast cooling *** thermo-mechanically aff ected zone(TMAZ)was characterized by elongated and rotated grains,in which a low density ofβ′precipitates and the highest density of dislocations were *** highest heat input and severest plastic deformation occurring in the nugget zone(NZ)resulted in the occurrence of dynamic recrystallization and a high density of ***,all theβ″precipitates and most of theβ′precipitates dissolved into the matrix,and a fewβ′precipitates were transformed intoβ*** microhardness was controlled by the precipitation and solution strengthening in the HAZ,by the dislocation and precipitation strengthening in the TMAZ,and by the fine-grain and dislocation strengthening in the *** the increase in rotation speed,the peak and the lowest microhardness value increased monotonously.

关键词： Aluminum hollow extrusions High-speed friction stir welding Grain structure Dislocation and precipitates Microhardness distribution

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