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Dynamic Analysis and Optimization of a Solar Car Using FE Method

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上海交通大学学报 2004年第z2期38卷 166-170页

作者： Liang Xinhua Zhu Ping lin Zhongqin zhang yan School of Mechanical and Power Energy Engineering Shanghai Jiaotong UniversityShanghai200030 China School of Mechanical and Power Energy Engineering Shanghai Jiaotong UniversityShanghai200030 China School of Mechanical and Power Energy Engineering Shanghai Jiaotong UniversityShanghai200030 China School of Mechanical and Power Energy Engineering Shanghai Jiaotong UniversityShanghai200030 China

As we all know, the design of solar car focuses on lightweight in order to reduce the energy expenditure. However, the lightweight can induce large vibration, particularly in lower frequencies. The vibration not only influences the riding comfort but also cause the fatigue breakage. So the dynamic performance of the solar car must also be taken into account. In this paper, the finite element model of a solar car frame is built, and the modal analysis is also performed. Afterwards,the frequency responses of the frame are analyzed under harmonic load. Finally, some modification is performed on this frame by structure optimization procedure.

关键词： solar car FEA modal analysis dynamic response

q-Deformations of 3-Lie Algebras

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Algebra Colloquium 2017年第3期24卷 519-540页

作者： Ruipu Bai Lixin lin yan zhang Chuangchuang Kang College of Mathematics and Information Science Hebei University Baoding Hebei 071002 China

q-Deformations of 3-Lie algebras and representations of q-3-Lie algebras are discussed. A q-3-Lie algebra （A, [, ,]q, [, ,]＇q, Ja）, where q ∈ F and q ≠ 0, is a vector space A over a field F with 3-cry linear multiplications [,, ]q and [,, ]＇q from A 3 to A, and a map Jq ： A 5→ F satisfying the q-Jacobi identity Jq（x1, x2, x3, x4, x5）[x1, x2, [x3, x4, x5]q]＇q = Jq（x4, x5, x1, x2, x3）[x4, x5, [x1, x2, x3]q]＇q for all x1 ∈ A. If the multiplications satisfy that [,,]q = [,,]＇q and [,,]q is skew-symmetry, then （A, [,,]q, Jq） is called a type （I）-q-3- Lie algebra. From q-Lie algebras, group algebras and commutative associative algebras, q-3-Lie algebras and type （I）-q-3-Lie algebras are constructed. Also, the non-trivial one- dimensional central extension of q-3-Lie algebras is investigated, and new q-3-Lie algebras （DerqC[x,x-1], [, ,]q, [, ,]＇q, Jq）, and （Derδq C[x,x-1], [, ,]q, [,,]＇q, Jq） are obtained.

关键词： q-3-Lie algebra q-deformation q-Jacobi identity

Neurological outcomes of patients admitted to the intensive care unit for cardiac arrest

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Chinese Medical Journal 2014年第16期127卷 3024-3026页

作者： Liu Lijun Zhu Jianliang yang lin zhang yan Department of Emergency and Critical Care Medicine Second Affiliated Hospital of Soochow University Suzhou Jiangsu 215004China

Cardiac arrest （CA） is a major cause of death, with an estimated 300 000 cases of out-of-hospital CA reported in Europe and the United States each year. Advances in resuscitation techniques have improved survival such that approximately one-third of patients achieve return of spontaneous circulation （ROSC）. Nonetheless, only between half and one-third of patients who have achieved ROSC survive until discharge.

关键词： cardiac arrest neurological outcome risk factors multivariate analysis

The Effects of Graded Abomasal Glucose Infusion on Milk Yield and Composition in Lactating Goats

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Agricultural Sciences in China 2010年第5期9卷 745-753页

作者： lin Xue-yan zhang Na LI Fu-chang WANG Zhong-hua College of Animal Science Shandong Agricultural University Tai＇an 271018 P.R. China

Four non-pregnant multiparous lactating goats were used in a 4 × 4 latin square experiment in the present study. The four treatments were abomasal infusion of 0, 50, 100, and 150 g d^-1 glucose. The results showed that graded glucose infusion increased milk yield （P 〈 0.01）. The highest milk yield was observed when 50 g d^-1 glucose was infused. An infusion of glucose at 100 or 150 g d^-1 failed to increase milk yield further and milk yield of the 100 g d ^-1 glucose infusion treatment was even significantly lower than that of the 50 g d^-1 treatment （P 〈 0.01）. Though milk fat content was gradually decreased by graded glucose infusions and milk fat yield of the 100 and 150 g d 1 treatments were lower than that of the control （P 〈 0.01）; milk fat yield of the 50 g d i treatment was not depressed and was higher than that of the control （P 〈 0.01）. Graded glucose infusion did not change the contents of milk protein and non-fatty solids. Yields of milk protein （P 〈 0.05）, lactose （P 〈 0.01）, non-fat solids （P 〈 0.01）, and lactose content （P 〈 0.01） of the 50 g d^-1 treatment were higher than those of the control but had no difference among the other three treatments. Contents of those de novo synthesized fatty acids in milk fat remained unchanged or increased and those preformed fatty acids remained unchanged or decreased by graded glucose infusion. Glucose infusion decreased the total yields of C16 ＋ C16：1 and 〉 C16 fatty acids and had no influence on the yield of C4-C14：1 fatty acids （P 〈 0.05）. Results of the present study implied that increased glucose supply had positive effects on the production of milk, milk protein, milk fat, and lactose only when glucose was a limiting factor for milk synthesis. Excessive glucose supply had no further beneficial effects and might depress milk fat synthesis.

关键词： lactating goats glucose milk yield milk composition abomasal infusion

Distribution of Vascular Plant Species Richness Along an Elevational Gradient in the Dongling Mountains, Beijing, China

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Journal of Integrative Plant Biology 2006年第2期48卷 153-160页

作者： Hai-Bao Ren Shu-Kui Niu lin-yan zhang Ke-Ping Ma Laboratory of Quantitative Vegetation Ecology Institute of Botany the Chinese Academy of Sciences Beijing 100093 China College of Natural Resources and Environment Beijing Forestry University Beijing 100083 China International Institute of Earth System Science Nanjing University Nanjing 210093 China

Quantifying spatial patterns of species richness and determining the processes that give rise to these patterns are core problems In blodlverslty theory. The aim of the present paper was to more accurately detect patterns of vascular species richness at different scales along altitudinal gradients In order to further our understanding of blodlverslty patterns and to facilitate studies on relationships between blodlverslty and environmental factors. Species richness patterns of total vascular plants species, Including trees, shrubs, and herbs, were measured along an altitudinal gradient on one transect on a shady slope In the Dongllng Mountains, near Beljlng, China. Direct gradient analysis, regression analysis, and geostatlstlcs were applied to describe the spatial patterns of species richness. We found that total vascular species richness did not exhibit a linear pattern of change with altitude, although species groups with different ecological features showed strong elevatlonal patterns different from total species richness. In addition to total vascular plants, analysis of trees, shrubs, and herbs demonstrated remarkable hierarchical structures of species richness with altitude （I.e. patchy structures at small scales and gradients at large scales）. Species richness for trees and shrubs had similar spatial character-Istics at different scales, but differed from herbs. These results Indicated that species groups with similar ecological features exhibit similar blodlverslty patterns with altitude, and studies of blodlverslty based on species groups with similar ecological properties or life forms would advance our understanding of variations In species diversity. Furthermore, the gradients or trends appeared to be due mainly to local variations In species richness means with altitude. We also found that the range of spatial scale dependencies of species rlchnese for total vascular plants, trees, shrubs, and herbs was relatively large. Thus, to detect the relationshi

关键词： geostatistics life form patterns scale species richness.

Hierarchical flower-like NiFe2O4 with core-shell structure for excellent toluene detection

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Rare Metals 2021年第6期40卷 1578-1587页

作者： yan-lin zhang Chao-Wei Jia Ruo-Nan Tian Hong-Tao Guan Gang Chen Cheng-Jun Dong School of Materials and Energy Yunnan UniversityKunming 650091China

The extensive use of toluene stimulates the effective detection by sensitive gas sensors based on unique ***,hierarchical flower-like NiFe_(2)O_(4) with core-shell architecture was synthesized by a facile hydrothermal method in the presence of urea and NH4 *** controllable experiments indicated that the burr spheres and football-like samples were produced with individual urea or NH4 *** flower-like NiFe_(2)O_(4) sensor exhibited outstanding sensitivity of 19.95 to 100×10^(-6) toluene with low detection limit(1×10^(-6)).Furthermore,the sensor showed superior sensing selectivity and longterm stability to *** excellent sensing properties could largely arise from a combination of high surface area,numerous active sites,porous structures,and the native catalytic characteristics of NiFe2 O4 to facilitate toluene molecules adsorption,diffusion,and reaction.

关键词： Hierarchical NiFe2O4 Core-shell Gas sensor Toluene

Primary cutaneous mantle cell lymphoma:Report of a rare case

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World Journal of Clinical Cases 2020年第8期8卷 1507-1514页

作者： Xiao-Dan Zheng yan-lin zhang Jian-Lan Xie Xiao-Ge Zhou Department of Pathology Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

BACKGROUND We describe the case of a 74-year-old man diagnosed with primary cutaneous mantle cell lymphoma(MCL),an extremely rare and controversial condition that is not included in the World Health Organization-European Organization for Research and Treatment of Cancer classification for cutaneous *** SUMMARY The patient presented diffuse cutaneous erythematous plaques and nodules throughout the *** lesions were biopsied and histopathological examination showed diffuse monomorphic lymphocyte infiltration in the dermal and subcutaneous layers,sparing the *** staining revealed CD20,cyclin-D1,CD5,and SOX-11 *** in situ hybridization showed CCND1/IGH gene *** diagnosis of primary cutaneous MCL requires ensuring that no other parts are involved;these cases require close follow-up to monitor their possible progression to systemic disease and for treating relapsed cutaneous *** this case,positron emission tomography scanning and clinical staging revealed no systemic involvement,and follow-up examination at 20 mo after diagnosis showed no evidence of systemic *** prognosis of primary cutaneous MCL is relatively *** patient received six cycles of chemotherapy,and the cutaneous manifestations presented almost complete *** Primary cutaneous MCL is rare,and its prognosis is relatively ***,correct diagnosis is a prerequisite for proper treatment.

关键词： Primary Cutaneous Mantle cell lymphoma Diagnosis Treatment Prognosis Case report

Intrahepatic cholangiocarcinoma is more complex than we thought:A case report

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World Journal of Clinical Cases 2021年第6期9卷 1469-1474页

作者： Jian-Ting Zeng Jie-Feng zhang Yu Wang Zhou Qing Zhen-Hua Luo yan-lin zhang Yi zhang Xian-zhangLuo Key Laboratory for Biorheological Science and Technology of Ministry of Education Chongqing UniversityChongqing University Cancer HospitalChongqing 400030China Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment Chongqing University Cancer HospitalChongqing 400030China

BACKGROUND Brain metastasis from intrahepatic cholangiocarcinoma is *** the best of our knowledge,only a few cases have been *** biological behavior was complex,and treatment requires further *** SUMMARY A 62-year-old woman complained of left limb *** computed tomography showed a 5.0 cm×5.6 cm lesion in the left lobe of the *** markers were *** analysis indicated absence of hepatitis *** magnetic resonance imaging revealed a 1.0 cm×1.3 cm mass in the right frontal *** cholangiocarcinoma with brain metastasis was diagnosed by our liver cancer multidisciplinary *** sufficient preparation,the patient underwent partial frontal lobotomy and left *** results confirmed that both the lesions were *** cycles of gemcitabine combined with S1 were *** a 39 mo postoperative follow-up,no sign of local recurrence or distant metastasis was *** This case expands our knowledge concerning the complex and heterogeneous nature of tumor metastasis.

关键词： Intrahepatic cholangiocarcinoma Brain metastasis Multidisciplinary team Synchronous brain metastasis Case report

Adhesion strength of tetrahydrofuran hydrates is dictated by substrate stiffness

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Petroleum Science 2024年第1期21卷 667-673页

作者： yan-Wen lin Tong Li Yi zhang Wei-Wei yan Xiao-Ming Chen Zhi-Sen zhang Jian-yang Wu Department of Physics Research Institute for Biomimetics and Soft MatterJiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials ResearchXiamen UniversityXiamen361005FujianChina Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201ZhejiangChina Key Laboratory of Icing and Anti/De-icing China Aerodynamics Research and Development CenterMianyang621000SichuanChina Micro-and Nano-technology Research Center State Key Laboratory for Manufacturing Systems EngineeringXi’an Jiaotong UniversityXi’an710049ShaanxiChina Electronic Materials Research Lab Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049ShaanxiChina NTNU Nanomechanical Lab Norwegian University of Science and Technology(NTNU)Trondheim7491Norway

Understanding the hydrate adhesion is important to tackling hydrate accretion in ***,the relationship between the Tetrahydrofuran(THF)hydrate adhesion strength(AS)and surface stiffness on elastic coatings is systemically examined by experimental shear force measurements and theoretical *** mechanical factor-elastic modulus of the coatings greatly dictates the hydrate AS,which is explained by the adhesion mechanics theory,beyond the usual factors such as wettability and structural ***,the hydrate AS increases with reducing the thickness of the elastic coatings,resulted from the decrease of the apparent surface elastic *** effect of critical thickness for the elastic materials with variable elastic modulus on the hydrate AS is also *** study provides deep perspectives on the regulation of the hydrate AS by the elastic modulus of elastic materials,which is of significance to design anti-hydrate surfaces for mitigation of hydrate accretion in petro-pipelines.

关键词： Hydrate Adhesion strength Elastic modulus Coatings