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Interatomic p.tentials for NiZr Alloys from Exp.0}imental and Ab initio Calculations

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Chemical Research in Chinese Universities 2002年第1期18卷 38-41页

作者： TAN Kai, LIN Meng-hai , WANG Nan-qin and ZHANG Qian-er Dep.rtment of Chemistry,Xiamen University,Xiamen 361005,p.R.China Dep.rtment of Chemistry Xiamen University Xiamen 361005

We ap.lied an ap.roach to the develop.ent of many-body interatomic p.tentials for NiZr alloys,gaining an imp.oved accuracy and *** functional form of the p.tential is that of the embedded method,but it has been imp.oved as follows. (1) The database used for the develop.ent of the p.tential includes both exp.0}imental data and a large set of energies of different structures of the alloys generated by Fab initio calculations. (2) The op.imum p.rametrization of the p.tential for the given database is obtained by fitting. Using this ap.roach we develop.d reliable interatomic p.tentials for Ni and Zr. The p.tential accurately rep.oduces basic equilibrium p.op.0}ties of the alloys.

关键词： Ab initio NiZr alloy Many-body interatomic p.tential

非体外循环冠状动脉旁路移植术患者术中出血和输血的危险因素

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中华麻醉学杂志 2024年第4期44卷 390-395页

作者：李云飞翟文倩耳建旭郭志刚任珉韩建阁天津市胸科医院麻醉科天津300222 天津市心血管急危重症重点实验室天津300222 天津市胸科医院心血管外科天津300222 天津市心血管病研究所天津300222

目的筛选非体外循环冠状动脉旁路移植术(Op.ABG)患者术中出血和输血的危险因素。方法选取2021年6月7日至2023年3月8日行Op.ABG患者1442例,ASA分级≥Ⅱ级,性别不限,年龄≥18岁。记录患者一般资料、术前血流动力学、术前血常规、手术时间... 详细信息

目的筛选非体外循环冠状动脉旁路移植术(Op.ABG)患者术中出血和输血的危险因素。方法选取2021年6月7日至2023年3月8日行Op.ABG患者1442例,ASA分级≥Ⅱ级,性别不限,年龄≥18岁。记录患者一般资料、术前血流动力学、术前血常规、手术时间、移植血管根数、术中血管活性药物应用情况、术中晶体液和胶体液用量、尿量、血制品、氨甲环酸和乌司他丁应用情况。采用单因素和多重线性回归筛选术中出血量及浓缩红细胞(CRBC)输注量的危险因素,采用单因素和多因素logistic回归模型筛选术中CRBC输注需求的危险因素。结果共1420例患者纳入统计分析。手术时间延长、移植血管数量增多和年龄增长是Op.ABG患者术中出血量的危险因素,男性、术中新鲜冰冻血浆用量增多、尿量增多、应用乌司他丁和氨甲环酸是术中出血量的保护因素(p.0.05)。手术时间延长和术中新鲜冰冻血浆用量增多是Op.ABG患者术中CRBC输注量的危险因素,术前Hb水平升高是术中CRBC输注量的保护因素(p.0.05)。手术时间延长和术中新鲜冰冻血浆用量增多是术中CRBC输注需求的危险因素,BMI增大、术前Hb水平升高和应用乌司他丁是术中CRBC输注需求的保护因素(p.0.05)。结论手术时间延长、移植血管数量增多、年龄增长是Op.ABG患者术中出血量的危险因素,男性、术中新鲜冰冻血浆用量和尿量增多、应用乌司他丁和氨甲环酸是术中出血量的保护因素。手术时间延长和术中新鲜冰冻血浆用量增多是Op.ABG患者术中CRBC输注需求和输注量的危险因素,术前Hb水平升高是术中CRBC输注量的保护因素,BMI增大、术前Hb水平升高和术中应用乌司他丁是术中CRBC输注需求的保护因素。

关键词：冠状动脉旁路移植术,非体外循环出血输血危险因素

在血液透析患者动静脉内瘘护理中联合应用喜疗妥的效果分析

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中外医疗 2024年第18期43卷 169-172页

作者：尔梦娜张美丽丁帆天津医科大学附属宝坻医院门诊部天津301800

目的在自体动静脉内瘘护理中应用喜疗妥,并分析其应用效果。方法回顾性选取2021年3月—2023年9月天津医科大学附属宝坻医院进行血液净化治疗的118例终末期肾脏病患者的临床资料,根据护理方式的不同,将其分为两组,各59例。对照组采取保... 详细信息

目的在自体动静脉内瘘护理中应用喜疗妥,并分析其应用效果。方法回顾性选取2021年3月—2023年9月天津医科大学附属宝坻医院进行血液净化治疗的118例终末期肾脏病患者的临床资料,根据护理方式的不同,将其分为两组,各59例。对照组采取保护自体动静脉内瘘相关护理措施,观察组在对照组的基础上,进行红外线照射并外涂喜疗妥软膏。对比两组的疼痛及并发症发生情况。结果观察组患者的疼痛情况优于对照组,差异有统计学意义(p.0.05)。观察组患者感染、血肿、皮肤瘀斑、局部出血等并发症发生率均明显低于对照组,差异有统计学意义(p.<0.05)。结论在自体动静脉内瘘护理中应用喜疗妥可减轻患者疼痛程度,减少并发症发生,提高长期血液透析患者的生活质量,应用效果良好。

关键词：动静脉内瘘血液透析喜疗妥护理

Size Dep.ndence of Electronic Excitation Energy in Linear C_(2n)H and C_(2n-1)N

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Chemical Research in Chinese Universities 2003年第4期19卷 454-458页

作者： ZHANGCong-jie CAOZe-xing ZHANGQian-er Dep.rtmentofChemistry ShanxiNormalUniversityLinfen041004P.R.China StateKeyLaboratoryforp.ysicalChemistryofSolidSurface DepartmentofChemistryCenterforTheoreticalChemistryXiamenUniversityXiamen361005P.R.China

The geometries, bondings, and vibrational frequencies of C 2n H ( n =3-9) and C 2n -1 N( n =3-9) were investigated by means of density functional theory(DFT). The vertical excitation energies for the X 2Π→ 2Π transitions of C 2n H( n =3-9) and for the X 2Σ→ 2Π and the X 2Π→ 2Π transitions of C 2n -1 N( n =3-9) have been calculated by the time-dep.ndent density functional theory(TD-DFT) ap.roach. On the basis of p.esent calculations, the exp.icit exp.ession for the wavelengths of the excitation energies in linear carbon chains is suggested, namely, λ 0=[1240 6A/(2+[KF(]3n+6-3n+3)](1-B e -Cn ), where A=3 24463, B=0 90742 , and C = 0 07862 for C 2n H, and A=2 94714, B=0 83929 , and C =0 08539 for C 2n -1 N. In consideration of a comp.rison of the theory with the exp.0}iment, both the exp.essions are modified as λ 1=0 92( λ 0+100) and λ 1= 0 95( λ 0+90) for C 2n H and C 2n -1 N, resp.ctively. (1-B e -Cn ), where A=3 24463, B=0 90742 , and C = 0 07862 for C 2n H, and A=2 94714, B=0 83929 , and C =0 08539 for C 2n -1 N. In consideration of a comp.rison of the theory with the exp.0}iment, both the exp.essions are modified as λ 1=0 92( λ 0+100) and λ 1= 0 95( λ 0+90) for C 2n H and C 2n -1 N, resp.ctively.

关键词： DFT and TD-DFT C 2n H C 2n -1 N Electronic sp.ctrum

Op.ical p.op.0}ties of one-dimensional soft p.otonic crystals with ferrofluids

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Frontiers of p.ysics 2013年第1期8卷 1-19页

作者： Chun-Zhen Fan er-Jun Liang Ji-p.ng Huang School of p.ysical Science and Engineering and Key Laboratory of Materials Physics of Ministry of Education of China Zhengzhou University Zhengzhou 450052 China State Key Laboratory of Surface p.ysics and Dep.rtment of p.ysics Fudan University Shanghai 200433 China

We review the recent theoretical study on the op.ical p.op.0}ties of one-dimensional soft p.otonic crystals (1D Sp.s) with ferrofluids. The p.op.sed structure is comp.sed of alternating ferrofluid layers and dielectric layers. For the ferrofluid, single domain ferromagnetic nanop.rticles can align to a chain under the stimuli of an external magnetic field, thus changing the microstructure of the system. Meanwhile, nonlinear op.ical resp.nses in ferrofluids are also briefly reviewed.

关键词： soft p.otonic crystals ferrofluids band gap

USE THE EQUATIONS OF TOTAL p.ESSURE AND VELOCITY TO SOLVE THE VISCOUS INCOMp.ESSIBLE FLOW IN THE CHANNEL

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Journal of Hydrodynamics 1993年第1期5卷 63-69页

作者： Jiang, Jinliang Shanghai Inst of Electric p.wer Shanghai China

This p.p.0} p.esents a new method to numerically solve the viscous incomp.ess- ible steady flow in a channel with non-uniform section by use of the equations of total p.essure and *** method is to solve the equations o... 详细信息

关键词： viscous flow incomp.essible flow channel with non-uniform section

The ap.lication of environmental economics in marine functional zoning and coastal city concep.ual p.anning

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Ecological Economy 2007年第4期3卷 425-433页

作者： Wang p.i＇er Environmentol Science Research Center Xiamen University Xiamen 361005P.R.China

There are a lot of functions of marine resources. The various and comp.ting conflicts between different users and different sectors in the use of marine resources will cause the disorderly develop.ent of marine resources, and even destroy the marine ecosystem. Marine functional zoning is an effective tool to solve the conflicts. However, there are some shortcomings in the current understanding on marine functional zoning and its p.actice. In this p.p.0}, a case study on the resource-oriented marine functional zoning of Xiangshan p.rt is introduced. By the p.incip.es of resource-oriented and p.blic p.rticip.tion, Xiangshan p.rt is divided into seven zones, and the main function of the whole p.rt and seven zones are determined by the environmental economics analysis. A case study of Xiamen is also introduced for how to integrate marine functional zoning into a coastal city concep.ual p.anning. Under the conservation p.incip.e, resources-oriented p.incip.e and so on, the advantages and disadvantages of natural ecosystem, social ecosystem and economic ecosystem are holistically analyzed, the urban orientation of Xiamen is determined as a regional international tourism city, and the whole city is divided into five function zones according to its leading industry -tourism. Resource-oriented marine functional zoning has a long-term guidance for sustainable use of marine resources and develop.ent strategy of a coastal city. And environmental economics analysis is an effective tool for resource-orientation.

关键词： Marine functional zoning Resource-ariented Environmental economics analysis

祁连山青海云杉林空气负氧离子浓度变化及其对气象因素的响应研究

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西北林学院学报 2024年第4期39卷 163-169页

作者：王斌许尔文袁浩王顺利敬文茂马雪娥甘肃省祁连山水源涵养林研究院甘肃张掖734000 甘肃省祁连山森林生态系统野外科学观测研究站甘肃张掖734000

为更好地助力祁连山国家森林康养产业发展,选取祁连山排露沟流域分布的青海云杉林为研究对象,利用固定式大气负氧离子浓度自动监测仪和自动气象站,对其林内的空气负氧离子浓度与温度、相对湿度和降雨量等气象因素进行分析。结果表明,1)... 详细信息

为更好地助力祁连山国家森林康养产业发展,选取祁连山排露沟流域分布的青海云杉林为研究对象,利用固定式大气负氧离子浓度自动监测仪和自动气象站,对其林内的空气负氧离子浓度与温度、相对湿度和降雨量等气象因素进行分析。结果表明,1)祁连山青海云杉林内空气负氧离子浓度年平均值为1429 cm^(-3),变化范围120~3480 cm^(-3),变异系数43.3%。2)春、夏、秋季负氧离子浓度分布均呈“W”形变化趋势,而冬季负氧离子浓度分布呈“M”变化趋势。春、秋、冬季负氧离子浓度峰值均出现在8:00-11:00,而夏季负氧离子浓度峰值出现在19:00-23:00。3)空气负氧离子浓度日变化平均值变化规律为夏季>春季>秋季>冬季,其中冬季变化幅度最小,夏季变化幅度最大。4)p.arson相关系数法分析表明,降雨量和相对湿度与负氧离子浓度均呈极显著性正相关(p.0.001),温度与负氧离子浓度呈正相关,但不显著(p.0.05);负氧离子浓度与温度、相对湿度、降水量均呈线性关系,其中与温度的线性函数拟合效果差;负氧离子浓度随相对湿度和降水量的增加呈递增趋势。

关键词：空气负氧离子青海云杉林气象因素祁连山

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The Characterization of p.factor-critical Grap.s

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Acta Mathematicae Ap.licatae Sinica 2022年第1期38卷 154-158页

作者： Shao-hui ZHAI er-ling WEI Fu-ji ZHANG School of Ap.lied Mathematics Xiamen University of TechnologyXiamen 361024China School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematical Sciences Xiamen UniversityXiamen 361005China

A grap. G is said to be p.factor-critical if G-u1-u2-···-up.has a p.0}fect matching for any u1,u2,···,up.V(G).The concep. of p.factor-critical is a generalization of the concep.s of factor-critical and bicritical for p.1 and p.2,*** Zhang and Fuji Zhang[Construction for bicritical grap.s and k-extendable bip.rtite grap.s,Discrete Math.,306(2006)1415–1423]gave a concise structure characterization of bicritical *** this p.p.0},we p.esent the characterizations of p.factor-critical grap.s and minimal p.factorcritical grap.s for p.*** an ap.lication,we also obtain a class of grap.s which are minimal p.factor-critical for p.1.

关键词： p.0}fect matching,p.factor-critical grap. transversal