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Search Results: 1 - 10 of 5305 matches for " 臧瑶 "
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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.
天然低共熔溶剂对大米粉中重金属镉的去除效果及其机制
,园园,杨茜,陈志刚
南京农业大学学报 , 2018, DOI: 10.7685/jnau.201712026
Abstract: [目的]本文旨在利用天然低共熔溶剂(NADES)高效去除大米粉中重金属镉,并对其机制进行探索。[方法]以加热法合成的15种NADES为洗脱剂,采用洗脱的方式,深入探讨NADES去除大米粉中重金属镉的效果及其机制,并以2种革兰氏阳性菌(金黄色葡萄球菌和单增李斯特菌)和2种革兰氏阴性菌(沙门氏菌和大肠杆菌)为指示菌,研究NADES的毒性。同时,通过吸附动力学和吸附热力学的方法研究NADES去除重金属镉的机制。[结果]15种NADES对大米粉中镉表现出较好的去除效果,镉去除率达到51%~96%。NADES毒性试验表明,除3种有机酸基质NADES由于其过低pH值对细菌生长造成影响之外,其余12种NADES表现出良好的生物相容性。初步去除机制试验表明,Freundlich等温吸附模型和拟二级动力学模型能很好阐明NADES的吸附机制。[结论]NADES是一种能高效去除大米粉中重金属镉的新型绿色溶剂。本研究建立了一种绿色高效去除镉污染大米粉中重金属镉的方法,为其他农产品重金属去除提供了思路。
[Objectives]The study aims to remove cadmium(Cd)from rice flour by natural deep eutectic solvents(NADES) with high efficiency and explore its mechanism.[Methods]15 NADES which were formed by three different base materials were synthesized and used as washing agents for Cd removing from contaminated rice flour. The effect and mechanism of Cd removing by NADES was explored in depth. Besides,the toxicities of the prepared NADES were qualitatively evaluated using two Gram-positive(Staphylococcus aureus and Listeria monocytogenes) and two Gram-negative(Escherichia coli and Salmonella enterica) bacteria. Meanwhile,the mechanism of Cd removal from rice flour by NADES was verified through adsorption kinetics and adsorption thermodynamics.[Results]Fifteen NAEDS demonstrated Cd removal(51% to 96%) from rice flour. Most of the NADES did not inhibit bacterial growth except organic acid-based NADES due to its low pH in toxicity study. Preliminary removal mechanism tests showed that Freundlich isotherm model and Pseudo-second-order adsorption kinetics could well elucidate the mechanism of the adsorption of NADES.[Conclusions]NADES is a new-type green solvent to remove heavy metal Cd efficiently from rice flour. Conclusively,this study presents a green and efficient way of removing Cd from contaminated rice and provides method for the other agricultural products
同、异双核卟啉-salen型金属配合物的合成及非线性光学性质
刘欢,,赵芳,刘坤,李悦,阮文娟
物理化学学报 , 2014,
Abstract: 设计合成了两种新型卟啉-salen型配体5-(3-氨基-4-(3,5-二叔丁基水杨醛基)-氨基苯基)-10,15,20-三苯基卟啉(1)和5-(n,n’-二(3,5-二叔丁基水杨醛基)-3,4-二氨基苯基)-10,15,20-三苯基卟啉(2)及其同、异双核金属配合物和单金属核配合物.采用氢核磁共振(1hnhr)谱、电喷雾质谱(esi-ms)、傅里叶变换红外(ftir)光谱和紫外-可见(uv-vis)光谱等手段对各目标化合物进行了表征.用z扫描技术研究了配体及其金属配合物的三阶非线性光学性质.实验结果表明:配体1和配体2具有相似的光学特征,均具有反饱和吸收的特性和自散焦效应;当不同的金属离子嵌入配体形成单、双核金属配合物后,分子的极性发生改变,他们的光学特性均受到影响.
异化的连锁反应——生态危机
Chain Reaction of Alienation: The Ecological Crisis
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Advances in Philosophy (ACPP) , 2015, DOI: 10.12677/ACPP.2015.42003
Abstract:
众所周知,早期的资本主义贯彻的是与自然资源富足的时代相适应的粗放型经济,而现代的开发则依赖科学技术对自然的掠夺,不争的事实是,不管是获取容易还是开发难,资本在利益的驱动下都必然导致对资源的过度消耗,高生产必然意味着高消费,两者的相互推进与自然资源的有限性相互作用,必然引发生态危机。笔者通过分析对异化劳动、异化消费和自然的异化三者之间的作用关系来揭示资本运动中的反生态性,即论证首尾关联的异化连锁反应的最终导向:生态危机。
It is well known that the early implementation of capitalism and rich natural resources is adapt to the era of extensive economy, while the development of the modern rely on science and technology of the natural plunder, indisputable fact is that, whether it’s easier to get or develop, capital under the drive of interests are bound to lead to excessive consumption of resources, inevitably means high consumption, high production of both promote each other and interaction between the finiteness of natural resources, raising the ecological crisis. The author through the analysis of labor alienation, alienation consumption and natural alienation to reveal the role of the relationship between capital movements in the ecosystem, the endless argument associated the alienation of the final orientation of a chain reaction: the ecological crisis.
人类生态学视域下建设生态文明的智慧启示——天人合一思想
Enlightenment from the Construction of Ecological Civilization in the Perspective of Human Ecology—Unity of Man and Nature
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Modern Anthropology (MA) , 2015, DOI: 10.12677/MA.2015.32002
Abstract:
在分析现代文明所造成的生态的破坏性原因的背景下,指明生态学意义上的生存危机对人类生存发展的威胁,探求传统文明对于生态文明社会的建构的积极意义,运用天人合一思想在生态建设领域的思想导向作用,既有助于生态危机的解决,对人类生态学作出理论贡献,又是对中国传统智慧的一种弘扬。
Under the background of analysis ecological destructive reasons which are caused by the modern civilization, we need to indicate the threat to human survival and development from survival crisis of ecology and explore the positive significance of traditional culture to the construction of eco-logical civilization. We could use the thought of unity of man and nature as guidance in the field of ecological construction, which is helpful to solve the ecological crisis, make contributions to the ecological theory, and promote Chinese traditional wisdom.
NaGd(MoO4)2: Tb3+, Eu3+荧光粉的水热合成及发光性质研究
Hydrothermal Synthesis and Luminescent Properties of Spindle-Like NaGd(MoO4)2: Tb3+, Eu3+ Phosphors
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Applied Physics (APP) , 2015, DOI: 10.12677/APP.2015.512026
Abstract:
采用水热法合成了NaGd(MoO4)2: Tb3+, Eu3+荧光粉。利用X射线衍射(XRD)对样品进行了测试,所制样品的衍射峰与标准卡片PDF#25-08282一致。样品的发光性质通过激发光谱和发射光谱进行了表征。证实了从Tb3+到Eu3+有能量传递的存在。
Tb3+, Eu3+ codoped NaGd(MoO4)2 phosphors were prepared by the method of hydrothermal pro- cess. The structure of the phosphors was characterized by the X-ray diffraction (XRD), which was corresponded to JCPDS card with # 25-0828. The photoluminescence properties of the prepared products were characterized by the excitation and emission spectra. The energy transfer from Tb3+ to Eu3+ in NaGd(MoO4)2 phosphors was confirmed.
论我国文化产业形态演进及其发展模式
Review on the Evolution of the Cultural Industry and Its Development Model in China
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Advances in Social Sciences (ASS) , 2015, DOI: 10.12677/ASS.2015.44044
Abstract:
当代中国文化产业发展主要得益于现代性力量的增长、科技力量的推动和和文化体制改革释放的市场空间。科技与文化、经济的互动构成了现代中国文明演进、创意文化产业发展的动力,文化和经济日益紧密结合,促进了当代中国资源共享性的文化产业集群的形成。当下,我国文化产业发展形态依据形成要素与产业特征,大致可以分为高新技术导向型发展模式、文化艺术导向型发展模式及文化消费导向型发展模式等类别。由于不同的区位因素,东西部地区的文化产业处于不同的发展阶段,文化产业的发展模式不同。然而,产业政策对其产生的影响与作用却是相同的。鉴于文化制度对文化产业发展的重要性,加强公共文化管理创新,推动文化产业体制创新发展,是加强我国文化产业竞争力、融入世界性的文化产业发展潮流的必要步骤。
The development of contemporary Chinese culture industry is mainly due to the growth of the modern power, the promotion of scientific and technological strength, and the market space re-leased by the reform of the cultural system. The interaction of science and technology, culture and economy constitutes the impetus of the development of modern Chinese civilization and the de-velopment of creative culture industry. The culture and economy are closely integrated, which promotes the formation of the cultural industry cluster in the contemporary China. At present, based on the formation of elements and industrial characteristics, our country’s cultural industry development patterns can be divided into high and new technology oriented development model, cultural and art oriented development model and cultural consumption oriented development model and other categories. Because of the different location factors, the cultural industries in the eastern and western regions are in different stages of development; the development pattern of the cultural industry is different. However, the impact of industrial policy is the same. In view of the importance of the cultural system to the development of the culture industry, it is necessary to strengthen the public cultural management innovation and promote the development of cultural industry system innovation, which can strengthen the competitiveness of China’s cultural industry and integration of the world’s cultural industry development trend.
东疆春季一次大风沙尘天气成因分析
The Cause Analysis of a Windy Dust Weather in Spring in Eastern Xinjiang
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Climate Change Research Letters (CCRL) , 2016, DOI: 10.12677/CCRL.2016.52010
Abstract:
本文利用常规观测资料、数值预报和自动气象站资料,对东疆地区2015年春季一次大风沙尘天气进行了分析,结果表明:此次大风沙尘天气是高空低压槽、地面冷锋和冷高压移动过境所致,强的热力和动力条件是大风沙尘形成和维持的主要因素,大风沙尘发生的区域,大气处于高能不稳定状态,涡度、散度、总温度都有明显的指示意义。
Using the conventional observation data, numerical prediction and automatic weather stations data, this paper analyzed the windy dust weather in spring of 2015 in Eastern Xinjiang. The results showed that: the windy dust resulted from the upper low trough, surface cold front and moving cold high pressure, strong thermal and dynamic conditions were the main factors for the formation and maintenance of windy dust. In occurred area, the atmosphere is in a state of high energy. Vorticity, divergence and total temperature have obvious implications.
裂隙-孔隙介质等效渗透率的数值试验研究
Numerical Experimental Research of Equivalent Seepage Characteristic for Fractured Porous Media
 [PDF]

, 刘建军
Advances in Porous Flow (APF) , 2011, DOI: 10.12677/apf.2011.12003
Abstract:
等效渗透率的影响因素一直是裂隙–孔隙双重介质渗透性研究中的难点。为了更好地研究裂隙–孔隙多孔介质的渗透特性,基于流体力学、渗流力学耦合作用原理,建立了裂隙–孔隙双重介质数学模型,得到了双重介质等效渗透率的计算公式。利用Comsol Multiphysics计算方法,研究了裂隙宽度、裂隙与压力梯度作用面角度及压力梯度对双重介质水平等效渗透率的影响规律。计算结果表明:1) 裂隙中的流速是孔隙中流速的104~107倍,裂隙宽度对水平等效渗透率的影响最大,起主导作用;2) 水平等效渗透率随裂隙与压力梯度作用面角度的增大而减小,从40?至45?之间减小的最为明显;3) 水平等效渗透率随压力梯度的增大而略有减小,压力梯度的大小对水平等效渗透率的影响不大。
The influencing factors of effective permeability have been a difficult point in studying seepage characteristic of pore-fissure media. In order to investigate the seepage characteristic for pore-fissure media, considering the coupling of fluid mechanics and seepage mechanics, the numerical experimental was made and solved for Comsol Multiphysics with FEM (finite element). Based on the numerical experimental results, the paper discussed the relationship among the horizontal effective permeability of pore-fissure media, the width and angle of the fracture. The results shown: 1) The velocity in fissures was 104 - 107 times faster than in pores. The width of the fracture played a leading role in horizontal effective permeability of pore-fissure media; 2) The angle between the fracture and the pressure gradient bigger, the horizontal effective permeabil-ity smaller. The decrease was the most obvious from 40? to 45?; 3) The pressure gradient had little impact on the horizontal effective permeability.
方兴未艾的单晶衬底材料
Progress on Single Crystals in Substrate Materilas
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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.
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