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Search Results: 1 - 10 of 6953 matches for " 臧 薇 "
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铜锤玉带草的组织培养与植株再生
 ,刘帆
北方园艺 , 2010, DOI: 10.11937/bfyy.201008062
Abstract:
微型断流催化色谱技术—乙醇催化脱水的动力学
雅茹,张一宝,,李云生
催化学报 , 1980,
Abstract: ?
无偶极矩八极分子一阶超极化率的理论计算
Theoretical Studies of First Hyperpolarizabilities of Octopolar Molecules without Dipole Moments
 [PDF]


Applied Physics (APP) , 2011, DOI: 10.12677/app.2011.12013
Abstract:

对4个无偶极矩的八极分子(1,3,5-triazine and 1,3,5-tricyano-benzene derivatives with the donor groups 4-N, N-diethylaminophenyl and 4-N, N-diethlaminophenylethynyl)的静态一阶超极化率β0 进行了理论计算。先在HF/D95V水平计算了一阶超极化率,比较好地重现了实验值的变化趋势。然后根据模型分子的计算,考察了电子相关效应和溶剂效应对分子非线性光学性质的影响。在假设电子相关效应和溶剂效应对相似体系的超极化率的影响幅度有相似性的基础上,粗略估计了这四个大的八极分子的一阶超极率,得到与实验值趋势一致的结果。
A theoretical study of static first hyperpolarizabilities \"\" of four octopolar molecules without dipole moments, 1,3,5-triazine and 1,3,5-tricyano-benzene derivatives with the donor groups 4-N, N-diethylamino- phenyl and 4-N, N-diethlaminophenylethynyl, are reported. The series of molecules have been calculated at level HF/D95V. The trend of the calculated values is the same as those obtained by experiment. The electric correlation and solvent effects are estimated from smaller model molecules calculation based on assuming that these effects are same for the model and real molecules.

方兴未艾的单晶衬底材料
Progress on Single Crystals in Substrate Materilas
 [PDF]

竞存
Material Sciences (MS) , 2011, DOI: 10.12677/ms.2011.11001
Abstract: 介绍了作为衬底材料的一系列单晶的使用状态及其在发光材料、光电子材料、磁性材料、超导材料、光学材料、铁电材料等方面的应用。
The latest research progress on single crystals in substrate materials were described. In this paper using and application of single crystal substrates in fluorescence, optico-electronics , magnium, supperconductor, optical ferro-electrical materials are introduced.
掺铬离子晶体光谱特征及在激光中的应用
Optical Characteristic of Cr-Ion-Doped Crystals and Its Application Laser
 [PDF]

竞存
Optoelectronics (OE) , 2013, DOI: 10.12677/OE.2013.31001
Abstract: 本文探讨了二价、三价、四价和五价铬离子掺杂的一些激光晶体的光谱特性,由于分属于d4、d3、d2、d1电子组态,在不同配位体和晶体场场强变化时,其特征光谱显示了不同的变化,因而在脉冲激光,可调谐激光,激光调Q和锁模技术中发挥着不同的作用。
In this paper, the optical characteristics of Cr-ion-doped crystals are introduced. The absorption and emission spectra of Cr2+(d4), Cr3+(d3), Cr4+(d2) and Cr5+(d1) ions show its properties varied with symmetry and crystal field. There application in new wavelength laser, tunable laser, high power pulse laser, Q-switched technology and mode-locked laser is presented.
锌K-Alpha X射线组态互相作用计算
Relativistic Configuration Interaction Calculations for the K-Alpha X-Ray of Zinc
 [PDF]

, 胡峰
Applied Physics (APP) , 2014, DOI: 10.12677/APP.2014.41001
Abstract:
采用结合包含Breit相互作用、量子动力学效应和有限核质量修正的相对论的组态相互作用的方法以及多组态Dirac-Fock方法的能级优化法来计算锌离子的波长、电偶极跃迁速率以及振子强度。利用活动空间扩大法,计算出的类氦和类铍的数据与实验数据符合很好。在此基础上本文给出了准确的锌离子类氦到类氖的跃迁特性。这些数据可以给锌等离子体的能级寿命、布居分布以及平均电荷提供参考。
Relativistic configuration interaction calculations with the inclusion of Breit interaction, quantum electrodynamics and finite nuclear mass corrections have been carried out in the extended optimal level scheme using multi- configuration Dirac-Fock wavefunctions on the wavelengths, electric dipole transition rates and oscillator strengths of Zinc. Through the use of the active space method, the calculated values are compared with the other available data on He-like and Be-like zinc and are found to be in very good agreement with them. In this paper, we give accurate transition properties from Zn XXI through Zn XXIX. These data provide reference value for level lifetime, charge state distribution and average charge of zinc plasmas.
外商直接投资与新型城镇化发展的互动研究—基于中国省级面板数据的分析
Research on the Interactive Relationship between New Urbanization Development and Foreign Direct Investment—An Empirical Analysis Based on Chinese Provincial Data
 [PDF]

, 李阳
Business and Globalization (BGlo) , 2016, DOI: 10.12677/BGlo.2016.42004
Abstract:
在经济全球化和国家城镇化战略的推动下,外商直接投资与地区新型城镇化发展之间的关系日益紧密。本文利用熵值法从人口、经济、社会和环境四个方面测算了我国2000年到2010年30个省(市、区)的新型城镇化水平,采用面板格兰杰因果关系检验等方法对我国省(市、区)级地区的FDI与新型城镇化发展的互动状况进行了实证研究。研究表明,总体上我国各地区的FDI与新型城镇化水平间存在显著的互动关系;东中西部两者的互动状态存在差异。
Under the globalization background, the relationship between China’s development of new urba-nization and FDI becomes more and more closely. The paper uses the entropy method to calculate new urbanization index through four dimensions including people, economic, society and envi-ronment, and further studies the relationship between FDI and regional urbanization development by Grainger Granger causality test. The research shows that there is a significant interaction between the FDI and the new urbanization level, but the interaction of the eastern, central and western is different.
“无烟儿童”:原理、效果及其应用前景
“The Smoke-Free Kids”: Principle, Effect, and Application Prospects
 [PDF]

福运, 冯永辉
Advances in Psychology (AP) , 2016, DOI: 10.12677/AP.2016.67105
Abstract:
“无烟儿童”是在欧美流行的以儿童和母亲为目标的基于家庭的吸烟干预项目。项目以社会认知理论、详尽可能性模型和计划行为理论为原理,以模块化和自我帮助的方式通过亲子间的互动来影响儿童关于吸烟的认知和行为规范的发展。通过随机对照试验验证项目在推迟儿童开始吸烟的时间和减少吸烟率方面有显著效果。由于方案具有心理学理论驱动、操作简单、可由家庭独立完成、侧重儿童、效果显著等优点,方案在与基于学校的方案结合使用、以更便捷的方式在更大的人口水平上实施、运用到其他成瘾品的干预预防等方面具有应用潜力。方案可能存在选择偏倚、天花板效应,以及缺乏跨文化研究、未考虑父亲因素等局限性,因此尚需研究来进一步完善。结合“无烟儿童”和我国现状,我国在吸烟干预研究中存在干预性研究少、实证研究少、具体化操作策略少、心理学领域研究少等不足。在未来控烟工作中,应将心理学理论运用于控烟工作,将儿童纳入禁烟目标,完善控烟立法,尤其是出台针对儿童和家庭的相关立法。
“The Smoke-Free Kids” is a home-based smoking prevention program, which is popular in Europe and America. It targeted kids and their mothers. The program is constructed based on the Social Cognitive Theory, the Elaboration Likelihood Model and the Theory of Planned Behavior. The program has an impact on the development of children’s cognitive and behavioral norms regarding smoking through interaction between parents and children in a modular and self-help format. Randomized controlled trials significantly delay the time that children start smoking, and also reduce children’s smoking frequency. The program has many advantages, such as theory-driven psychology, easy operation, focusing on children, significant effect, and so on. Moreover, it could be applied in multiple ways, such as combing school-based program, implementing on a large pop-ulation conveniently, and facilitating the intervention effect of other anti-addictive products. Nev-ertheless, the selection bias and the ceiling effect might exist in the program. The lack of cross- cultural studies and the failure to include father effects suggest that further improvements are needed in future studies. Considering “The Smoke-Free Kids” program and the domestic conditions, the smoking intervention researches in China have some limitations, such as limited number of intervention studies, empirical research, concrete action policy, and research in the field of psychology. In the future, the psychology should be applied to the prevention of smoking. The children should be targeted in ban on smoking, and legislation concerning smoking should be im-proved, especially for children and families.
农村生活固体垃圾的收集与运输方案设计
Design of Collection and Transportation for Rural Solid Waste
 [PDF]

, 连淑君
Operations Research and Fuzziology (ORF) , 2013, DOI: 10.12677/ORF.2013.34008
Abstract:
针对农村生活产生的固体垃圾的收集与运输问题进行研究,运用线性规划的知识,给出在一定条件下建立投资成本最小的垃圾中转站的选址方案,并在此基础上设计“垃圾处理场–中转站–垃圾处理场”模式的费用最低的最优运输方案。
>In this paper, the collection and transportation system for the solid waste produced in the rural area is studied. Using the knowledge on linear programming, an optimization model is developed for the location of transfer stations under certain conditions. Based on this location selection plan, the author provides the waste transportation scheme: waste landfill site—transfer stations—waste landfill site. This scheme is the op-timal one with the lowest cost.
我国西藏担子菌类数新种

微生物学报 , 1980,
Abstract: 西藏的东南隅是真菌区系极为丰富和复杂的一个地区。作者在此地区采到的910号真菌标本,经鉴定有担子菌类5个新种,即:牛肝菌科(Boletaceae)的木生小牛肝菌(Boletitzusligicolus Zang sp.nov),巨孢牛肝菌(Bolctus magasporus Zang sp. Nov.),喇叭菌科(can-tharellaceae)的疣孢鸡油菌(Cantharellus tuberculosporus Zang sp. Nov),灰包科(马勃科)(Lycoperdaceae)的纺锤形灰包(Lycoperdon fusiforme Zang sp. Nov.)和鸟巢菌科(Nidulariaceae)的盘状黑蛋巢(Cyathus dis~oideus Zang sp. Nov.)。
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