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1
Difference Graphs of Block ADI Method
Dergi Makalesi

Dergi Makalesi
Kaynak :
JSTOR
Dergi:
SIAM Journal on Numerical Analysis
Yayıncı:
Society for Industrial and Applied Mathematics
Yazar(lar) :
Zhang Bao-Lin
Konu :
Science & Mathematics, Mathematics
Yıl :
2001
Zhang Bao-Lin
Yayıncı Web Sitesi
Kaydet Alıntıla
The block alternating direction implicit (ADI) method is the parallelization of the well-known ADI method, which is suitable for the distributed memory multiprocessors with a minimal cost of communications. The difference graphs of the block ADI method are introduced in this paper, and a general procedure is obtained to design a block ADI method, and at the same time a new proof of unconditional stability of the block ADI method is given.
Cilt: 38
Sayı: 3
Sayfa: pp. 742-752
Yayın Tarihi: 2001-01-01
ISSN: 0036-1429
2
A Note on the Mean Value Theorem for Integrals
Dergi Makalesi

Dergi Makalesi
Kaynak 1:
JSTOR
Kaynak 2:
Taylor and Francis
Dergi:
The American Mathematical Monthly
Yayıncı:
Mathematical Association of America
Yazar(lar) :
Zhang Bao-lin
Konu :
Science and Mathematics, Mathematics
Yıl :
1997
Zhang Bao-lin
Kaydet Alıntıla
Cilt: 104
Sayı: 6
Sayfa: pp. 561-562
Yayın Tarihi: 1997-06-01
ISSN: 0002-9890
3
A modified method of averaging for solving a class of nonlinear equations
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Applied Mathematics and Mechanics
Yazar(lar) :
Zhang Bao-shan
Konu :
Applied Mathematics, Mechanical Engineering, Mechanics of Materials
Yıl :
1994
Zhang Bao-shan
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this paper, we studied a method of averaging which decide a uniform valid solution for nonlinear equation and got the modified forms for KB method (Krylov-Bogoliubov method) and KBM method (Krylov-Bogoliubov-Mitropolski method). Through the comparison of two examples with the method of multiple scales it can be shown that the modified averaging methods here are uniformly valid and thereby the applied area of the method of averaging are extended.
DOI : 10.1007/bf02451988
Anahtar Kelimeler : KB method, KBM method, method of multiple scales, uniformly valid solution
ISSN: 0253-4827 1573-2754
Sayı: 12
Cilt: 15
Sayfa: 1177-1186
4
Specialised Environmental Courts in China: Status Quo, Challenges and Responses
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Energy & Natural Resources Law
Yayıncı:
Informa UK Limited
Yazar(lar) :
Zhang Minchun , Zhang Bao
Yıl :
2012
Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Specialised environmental courts have developed rapidly in China owing to severe environmental degradation, increasing environmental disputes and the need for more professionalised trials. As of 2011, nearly 100 such courts, consisting of four different modes, had been established in 15 provinces, and the number is still increasing. Some normative documents have been formulated to guide these pilot projects. However, environmental courts in practice still face dilemmas and challenges, among which the most important issues are legality, caseload and procedure: current legislation does not provide a legal basis for some models; low caseloads have prohibited the new establishment of such courts and have even caused the cancellation of some existing courts; and, most importantly, the lack of an independent procedure has made the necessity and legitimacy of those pilots doubtful. This article explores the reasons for and nature of these problems and makes recommendations based on comprehensive scientific, legal, social and economic considerations.
DOI : 10.1080/02646811.2012.11435303
ISSN: 0264-6811
Sayı: 4
Cilt: 30
Sayfa: 361-390
5
A class of alternating block crank-nicolson method
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
International Journal of Computer Mathematics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Chen Jing , Zhang Bao-Lin
Konu :
Computational Theory and Mathematics, Applied Mathematics, Computer Science Applications
Yıl :
1992
Zhang Bao-Lin
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The Alternating Segement Crank-Nicolson scheme for one-dimensional diffusion equation has been developed in [1], and the Alternating Block Explicit-Implicit method for two-dimensional problem in [2]. Mathematically, the methods are unconditionally stable and are good from the view point of parallel computing. In this paper, for the two-space dimensional diffusion equation, the Alternating Block Crank-Nicolson scheme is constructed by Saul'yev asymmetric schemes. The method also has the advantages of parallel computing, stability and accuracy.
DOI : 10.1080/00207169208804120
Anahtar Kelimeler : Two-dimensional diffusion equation, finite difference equation, Alternating Block Crank-Nicolson method, G.1.8
ISSN: 0020-7160
Sayı: 1-2
Cilt: 45
Sayfa: 89-112
6
Finger vein recognition based on convolutional neural network
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
MATEC Web of Conferences
Yazar(lar) :
Meng Gesi , Fang Peiyu , Zhang Bao
Yıl :
2017
Zhang Bao
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Biometric Authentication Technology has been widely used in this information age. As one of the most important technology of authentication, finger vein recognition attracts our attention because of its high security, reliable accuracy and excellent performance. However, the current finger vein recognition system is difficult to be applied widely because its complicated image pre-processing and not representative feature vectors. To solve this problem, a finger vein recognition method based on the convolution neural network (CNN) is proposed in the paper. The image samples are directly input into the CNN model to extract its feature vector so that we can make authentication by comparing the Euclidean distance between these vectors. Finally, the Deep Learning Framework Caffe is adopted to verify this method. The result shows that there are great improvements in both speed and accuracy rate compared to the previous research. And the model has nice robustness in illumination and rotation.
DOI : 10.1051/matecconf/201712804015
ISSN: 2261-236X
Cilt: 128
Sayfa: 04015
Sınıflandırma :
7
Global Empirical Model for Estimating Water Vapor Scale Height
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Acta Geodaetica et Cartographica Sinica
Yazar(lar) :
ZHANG Bao , YAO Yibin , XU Chaoqian
Yıl :
2015
ZHANG Bao
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Water vapor scale height is an important parameter that reflects the vertical distribution of water vapor and also a key parameter that is usually used to make height correction in GNSS zenith wet delay and tropospheric tomography. Based on the spectral analysis of the time series of water vapor scale height from 2006 to 2012, it is found that the water vapor scale height shows an annual and a semi-annual variation in time. So, the trigonometric functions with an annual and a semi-annual cycle are used to express the time variation of water vapor scale height.And then the European Centre for Medium-range Weather Forecasting (ECMWF) data are used to fit the coefficients of the trigonometric functions at 1°×1° grid points on a global scale. By these methods,a global water vapor scale height model GSH is firstly established, which considers both the time and geographic variations of water vapor scale height. By taking radiosonde data as reference, the GSH model has bias of -0.19 km and rootmean square error (RMSE) of 1.81 km; by taking ECMWF data as reference, the GSH model has bias of 0.04 km and RMSE of 1.52 km. The GSH model shows a relatively even accuracy on a global scale, and could serve the study of GNSS meteorology and provide reference values of water vapor scale height for related meteorological researches.
DOI : 10.11947/j.AGCS.2015.20140664
Anahtar Kelimeler : water vapor scale height, GSH model, water vapor
ISSN: 1001-1595
Cilt: 44
Sayı: 10
Sayfa: 1085 - 1091
Sınıflandırma :
8
Alternating block explicit-implicit method for the two-dimensional diffusion equation
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
International Journal of Computer Mathematics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Zhang Bao-Lin , Su Xiu-Min
Konu :
Computational Theory and Mathematics, Applied Mathematics, Computer Science Applications
Yıl :
1991
Zhang Bao-Lin
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
We have developed the Alternating Segment Explicit-Implicit (ASE-I) method for the one-space dimensional diffusion equation in Zhang Bao-lin [1]. Mathematically, the ASE-I method is unconditionally stable and is good from the view point of parallel computing. In this paper the method is extended to the case of the two-space dimensional problem, and in this case the method is called the Alternating Block Explicit-Implicit (ABE-I) method.
DOI : 10.1080/00207169108803972
Anahtar Kelimeler : Two-dimensional diffusion equation, finite difference equations, alternating block Explicit-Implicit method
ISSN: 0020-7160
Sayı: 3-4
Cilt: 38
Sayfa: 241-255
9
2T-periodic solution form order neutral type differential equations with time delays
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Applied Mathematics and Mechanics
Yazar(lar) :
Zhang Bao-sheng , Zhu Guang-hui
Konu :
Applied Mathematics, Mechanical Engineering, Mechanics of Materials
Yıl :
2002
Zhang Bao-sheng
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Periodic solution of m order linear neutral equations with constant coefficient and time delays was studied. Existence and uniqueness of 2 T-periodic solutions for the equation were discussed by using the method of Fourier series. Some new necessary and sufficient conditions of existence and uniqueness of 2T-periodic solutions for the equation are obtained. The main result is used widely. It contains results in some correlation paper for its special case, improves and extends the main results in them. Existence of periodic solution for the equation in larger number of particular case can be checked by using the result, but cannot be checked in another paper. In other words, the main result in this paper is most generalized for (1), the better result cannot be found by using the same method.
DOI : 10.1007/bf02437736
Anahtar Kelimeler : neutral type equation, 2T-periodic solution, Fourier series, O175.1
ISSN: 0253-4827 1573-2754
Sayı: 1
Cilt: 23
Sayfa: 100-106
10
Application of silicocalcium in Mg-6Al-0.5Mn alloy
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
China Foundry
Yazar(lar) :
WANG Li-guo , ZHANG Bao-feng , ZHU Shi-jie
Yıl :
2007
ZHANG Bao-feng
Tam Metin
Kaydet Alıntıla
The mechanical properties of magnesium alloys at both ambient and elevated temperatures can be improved with the existence of Mg2Si phase in the matrix. However, these properties can be deteriorated if the Mg2Si phase is of coarse Chinese script type. Effects of the silicocalcium addition on the microstructure and properties of an Mg-6Al-0.5Mn alloy (AM60) were studied. The microstructure of the alloy with the addition of silicocalcium is featured with dispersedly distributed small polygonal type Mg2Si phases. The microhardness, tensile strength, percentage elongation and toughness of as-cast AM60+1.0Si-Ca alloy are 20%, 13.3%, 28.5% and 50% higher than these of AM60 alloy respectively. Further corrosion measurements showed that the silicocalcium-modified AM60 alloy increases the corrosion potential by 0.04V and decreases the lost weight corrosion rate by 45%.
Anahtar Kelimeler : silicocalcium, magnesium alloy, microstructure, mechanical properties, corrosion
ISSN: 1672-6421
Cilt: 4
Sayı: 4
Sayfa: 284 - 287
Sınıflandırma :
11
Using CVSS to quantitatively analyze risks to software caused by vulnerabilities
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
MATEC Web of Conferences
Yazar(lar) :
Gao Jian-Bo , Zhang Bao-Wen , Chen Xiao-Hua
Yıl :
2015
Zhang Bao-Wen
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Quantitative methods for evaluating and managing software security are becoming reliable with the ever increasing vulnerability datasets. The Common Vulnerability Scoring System (CVSS) provides a way to quantitatively evaluate individual vulnerability. However it cannot be applied to evaluate software risk directly and some metrics of CVSS are hard to assess. To overcome these shortcomings, this paper presents a novel method, which combines the CVSS base score with market share and software patches, to quantitatively evaluate the software risk. It is based on CVSS and includes three indicators: Absolute Severity Value (ASV), Relative Severity Value (RSV) and Severity Value Variation Rate (SVVR). Experimental results indicate that by using these indicators, the method can quantitatively describe the risk level of software systems, and thus strengthen software security.
DOI : 10.1051/matecconf/20153116004
ISSN: 2261-236X
Cilt: 31
Sayfa: 16004
Sınıflandırma :
12
A New Method to Solving AR Model Parameters Considering Random Errors of Design Matrix
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Acta Geodaetica et Cartographica Sinica
Yazar(lar) :
YAO Yibin , XIONG Zhaohui , ZHANG Bao , ZHANG Liang , KONG Jian
Yıl :
2017
ZHANG Bao
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
The ordinary least square method could not solve the problem that the error exist both in design matrix and observation vector while compute parameter values of AR model. In this article, a new method is proposed which consider the random errors of design matrix. The source of design matrix and observation vector is same and the amount of parameters contain error can be equal by introducing virtual observation. Then, this problem could be solved under the framework of normal least square by equivalence transformation of observation equation. The result of this new method is superior to SVD method and normal least square method by simulation date and observation data which verify the feasibility and effectiveness of this method.
DOI : 10.11947/j.AGCS.2017.20170004
Anahtar Kelimeler : AR model, design matrix error, virtual observations, SVD method
ISSN: 1001-1595
Cilt: 46
Sayı: 11
Sayfa: 1795 - 1801
Sınıflandırma :
13
A Note on the Truncation Error for the GE Scheme
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
International Journal of Computer Mathematics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Zhang Bao-Lin , Wan Zheng-Su , D.J. Evans
Konu :
Computational Theory and Mathematics, Applied Mathematics, Computer Science Applications
Yıl :
2002
Zhang Bao-Lin
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This note presents a new result on the truncation error for the GE (Group Explicit) scheme for the diffusion equation, i.e. {\rm O}(\Delta t + \Delta x) .
DOI : 10.1080/00207160212118
Anahtar Kelimeler : Ge Scheme, Truncation Error, Diffusion Equation
ISSN: 0020-7160
Sayı: 9
Cilt: 79
Sayfa: 1009-1012
14
Technology of Stacking Vertical Interconnecting Micro-Assembly
Konferans Bildirileri

Konferans Bildirileri
Kaynak :
IEEE Xplore
Yazar(lar) :
Zhang Bao , Wang Zhong , Wang Xiangjun
Konu :
Components, Circuits, Devices and Systems
Yıl :
2007
Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Vertical interconnecting can effectively reduce the substantial size and increase the interconnecting ability and accessibility It is one of the most important trends of the novel assembly technology. Based on the characteristics of 3-D packaging and cubic assembly technology, this paper studies the stacking vertical interconnecting assembly technology. Vertical interconnecting of electronic packaging module with both-sides electrodes and transfer layer with circuit transferring function can make the circuit chips stack along z-axis, forming a kind of microelectronic system of stacking assembly. Experiment shows that this method can greatly shorten the interconnecting length of chips and reduce the area and cubage, and both-sides electrodes and transfer layer are the key to success.
DOI : 10.1109/hdp.2007.4283566
Anahtar Kelimeler : Stacking, Integrated circuit interconnections, Electronics packaging, Space technology, Assembly systems, Electrodes, CMOS technology, Integrated circuit packaging, Power system interconnection, Delay effects, integrated circuit interconnections, integrated circuit packaging, microassembling, stacking vertical interconnecting assembly technology, microassembly, 3-D packaging characteristics, cubic assembly technology, electronic packaging module, circuit transferring function, circuit chip stacks, microelectronic system
15
Deformation and Damage Mechanism of a 4.5% Re-containing Nickel-based Single Crystal Superalloy During Creep at 980℃
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Journal of Materials Engineering
Yazar(lar) :
SHU De-long , TIAN Su-gui1 , LIANG Shuang , ZHANG Bao-shuai
Yıl :
2017
ZHANG Bao-shuai
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
By means of creep property measurements and microstructure observations,an investigation has been made into creep behaviors,deformation and damage mechanism of a 4.5%(mass fraction,the same below) Re-containing,nickel-based single crystal superalloy at 980℃.Results show that,under the condition of 980℃/300MPa,the creep life of 4.5% Re alloy is 169h.In the initial stage of creep,the cubical γ'phase in alloy is transformed into the N-type rafted structure perpendicular to the stress axis.During the steady stage creep,the deformation mechanism of the alloy is dislocations slipping in γ matrix and climbing over the rafted γ'phase.In the last stage of creep,the deformation mechanism of alloy is dislocations slipping in γ matrix and shearing into the rafted γ'phase.On the one hand,the γ matrix channels with narrower feature increases the resistance of dislocations slipping;on the other hand,the super-dislocations shearing into the rafted γ'phase may cross-slip from{111}plane to{100}plane to form the dislocation configuration of K-W locks,which may restrain the slipping and cross-slipping of dislocations to improve the creep resistance of alloy.Moreover,the alternate activation of the primary/secondary slipping dislocations results in the twisting of the rafted γ'phase to promote the initiation of the cracks on the γ'/γ interfaces,and as the creep goes on,the cracks propagate along the direction perpendicular to the direction of stress axis,up to creep fracture,which is thought to be the fracture mechanism of the alloy during creep.
DOI : 10.11868/j.issn.1001-4381.2016.000599
Anahtar Kelimeler : nickel-based single crystal superalloy, rhenium, creep, deformation mechanism, K-W lock
ISSN: 1001-4381
Cilt: 45
Sayı: 1
Sayfa: 93 - 100
Sınıflandırma :
16
Innovation Management Mechanism Comparative Study on China-USA-Russia National Defense-Related Science and Technology Industry
Konferans Bildirileri

Konferans Bildirileri
Kaynak :
IEEE Xplore
Yazar(lar) :
Zhang Bao-Hong , Ju Xiao-Feng
Konu :
Engineering Profession
Yıl :
2017
Zhang Bao-Hong
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This current study is designed to compare the different mechanisms between China and foreign countries. Analyzing the national mechanisms of the USA and Russia can promote the development of revolution of national defense in China. Drawing upon previous studies associated with innovation management of national defense-related science and technology in China and foreign countries, this present study conducts endogenous and exogenous comparative studies and has significant effect on innovational management for China's national defense technology industry.
DOI : 10.1109/icmse.2017.8574409
Anahtar Kelimeler : Technological innovation, Innovation management, Defense industry, Weapons, Statistical analysis, Personnel, defence industry, innovation management, foreign countries, exogenous comparative studies, innovational management, national defense technology industry, innovation management mechanism comparative study, China-USA-Russia national defense-related science, national mechanisms, national defense technology industry, innovation management mechanism, military enterprises
17
Study on microstructure and mechanical properties of extruded as-cast AZ80 magnesium alloy
Konferans Bildirileri

Konferans Bildirileri
Kaynak :
IEEE Xplore
Yazar(lar) :
Zhang Bao-hong , Zhang Zhi-min
Konu :
Communication, Networking and Broadcast Technologies, Components, Circuits, Devices and Systems, Computing and Processing, Engineered Materials, Dielectrics and Plasmas, Power, Energy and Industry Applications, Signal Processing and Analysis
Yıl :
2011
Zhang Bao-hong
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In order to study the effect of plastic deformation on microstructure and mechanical properties of as-cast AZ80 magnesium alloy, the experiment of direct extrusion was done to homogenized billets. The microstructure and mechanical properties of original samples and deformed samples were investigated. Experimental results show that homogenization can increase the mechanical properties of as-cast AZ80 magnesium alloy. The grain of as-cast AZ80 magnesium alloy can be dramatically refined by direct extrusion. Comparing with the pre-extruded billet, the tensile strength and elongation of extruded sample can be respectively improved at least 100% and 33%. When the extrusion temperature rises, the elongation of extruded sample will drop and the tensile strength shows a trend of non-continuous change. The influence of extrusion ratio on the mechanical properties of extruded samples is smaller than that of extrusion temperature.
DOI : 10.1109/cecnet.2011.5768391
Anahtar Kelimeler : Magnesium, Mechanical factors, Microstructure, Temperature, Materials processing, Materials, aluminium alloys, billets, crystal microstructure, elongation, extrusion, magnesium alloys, plastic deformation, tensile strength, mechanical properties, microstructural properties, extrusion, AZ80 magnesium alloy, plastic deformation, billets, homogenization, tensile strength, elongation, as-cast AZ80 magnesium alloy, direct extrusion, homogenization, mechanical properties, microstructure
18
A novel selection signature in stearoyl-coenzyme A desaturase (SCD) gene for enhanced milk fat content in Bubalus bubalis
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Tropical Animal Health and Production
Yazar(lar) :
J. Maryam , M. E. Babar , Zhang Bao , A. Nadeem
Konu :
Animal Science and Zoology, Food Animals
Yıl :
2016
Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Modern molecular interventions are dynamic gears for breeding animals with superior genetic make-up. These scientific efforts lead us toward sustainable dairy herds with improved milk production in terms of yield and quality. Many of candidate genes have been dissected at molecular level, and suitable genetic markers have been identified in cattle, but this work has not been validated in buffaloes so far. Stearoyl-coenzyme A desaturase (SCD) has been a potential candidate gene for fat content of milk. Genomic analysis of SCD revealed a total of six variations that were identified through DNA sequencing of animals with lower and higher butter fat %age. After statistical analysis, genotype AB of p.K158I could be associated (P value <0.0001) with higher milk fat %age (10.5 ± 0.5464). This SNP was validated on larger data set by cleaved amplified polymorphic sequences (CAPS) by using DdeI. To scrutinize the functional consequences of p.K158I, 3D protein structure of SCD was predicted by homology modeling and this variation was found located in the vicinity of functional domain and a part of transmembrane helix of this membrane integrated protein. This is a first report toward genetic screening of SCD gene at molecular level in buffalo. This report illustrates the implication of SCD gene and in particular p.K158I variation, in imparting its effect on milk fat %age, which can be targeted in selection of superior dairy buffaloes.
DOI : 10.1007/s11250-016-1092-8
Anahtar Kelimeler : SCD gene, Dairy buffalo, Fat %age, Variation, CAPS, 3D protein structure
ISSN: 0049-4747 1573-7438
Sayı: 7
Cilt: 48
Sayfa: 1343-1349
Sınıflandırma :
19
A laser-cooled chromium atom beam for nanolithography
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Yayıncı:
Elsevier
Yazar(lar) :
Zhang Wen-tao , Li Tong-bao , Zhang Bao-wu
Yıl :
2007
Zhang Bao-wu
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
We have used a high collimated neutral chromium atomic beam to write periodic nanometer-scale structures by depositing an atomic beam of 52Cr through an off-resonant laser standing wave with the wavelength of 425.55 nm onto a silicon substrate. The resulting nanolines exhibit a period of 215 ± 3 nm with a height of 1 nm, which was half the wavelength of standing wave used to write the grating.
DOI : 10.1016/j.nimb.2006.12.032
Anahtar Kelimeler : 32.80.−t, 42.50.Vk, 42.50.−p, Atom lithography, Laser cooling, Atomic deposition
ISSN: 0168-583X
Sayı: 2
Cilt: 256
Sayfa: 719-722
Sınıflandırma :
20
On gauge equivalent integrable systems andr-matrices for AKNS hierarchy and a coupled MKdV hierarchy
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Applied Mathematics and Mechanics
Yazar(lar) :
Liu Xiang-lin , Chen Qing-hui , Zhang Bao-cai
Konu :
Applied Mathematics, Mechanical Engineering, Mechanics of Materials
Yıl :
2003
Zhang Bao-cai
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The new coupled MKdV hierarchy is obtained. By using gauge transformation, the constrained flow, the integrable system and Lax representation for the coupled MKdV hierarchy were first constructed from the AKNS hierarchy and then using the Lax representation, the r-matrix for the constrained flow of the coupled MKdV hierarchy was constructed. The second set of conserved integrals of this constrained flow and their involutivity were also given.
DOI : 10.1007/bf02437819
Anahtar Kelimeler : gauge equivalence, r-matrix, integrable system, O175.29, 35Q58
ISSN: 0253-4827 1573-2754
Sayı: 7
Cilt: 24
Sayfa: 863-870
21
Generation of an external guide sequence library for a reverse genetic screen in Caenorhabditis elegans
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
BMC Biotechnology
Yazar(lar) :
Yin Changxin , Zheng Wenlin , Zhao Rui , Yan Qitao , Zhang Bao , Ma Wenli
Yıl :
2009
Zhang Bao
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Abstract Background A method for inhibiting the expression of particular genes using external guide sequences (EGSs) has been developed in bacteria, mammalian cells and maize cells. Results To examine whether EGS technology can be used to down-regulate gene expression in Caenorhabditis elegans (C. elegans), we generated EGS-Ngfp-lacZ and EGS-Mtgfp that are targeted against Ngfp-lacZ and Mtgfp mRNA, respectively. These EGSs were introduced, both separately and together, into the C. elegans strain PD4251, which contains Ngfp-lacZ and Mtgfp. Consequently, the expression levels of Ngfp-lacZ and Mtgfp were affected by EGS-Ngfp-lacZ and EGS-Mtgfp, respectively. We further generated an EGS library that contains a randomized antisense domain of tRNA-derived EGS ("3/4 EGS"). Examination of the composition of the EGS library showed that there was no obvious bias in the cloning of certain EGSs. A subset of EGSs was randomly chosen for screening in the C. elegans strain N2. About 6% of these EGSs induced abnormal phenotypes such as P0 slow postembryonic growth, P0 larval arrest, P0 larval lethality and P0 sterility. Of these, EGS-35 and EGS-83 caused the greatest phenotype changes, and their target mRNAs were identified as ZK858.7 mRNA and Lin-13 mRNA, respectively. Conclusion EGS technology can be used to down-regulate gene expression in C. elegans. The EGS library is a research tool for reverse genetic screening in C. elegans. These observations are potentially of great importance to further our understanding and use of C. elegans genomics.
DOI : 10.1186/1472-6750-9-47
ISSN: 1472-6750
Cilt: 9
Sayı: 1
Sayfa: 47
Sınıflandırma :
22
Association between tumor necrosis factor-α rs1800629 polymorphism and risk of asthma: a meta-analysis.
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
PLoS ONE
Yazar(lar) :
Guangdie Yang , Junjun Chen , Fei Xu , Zhang Bao , Yake Yao , Jianying Zhou
Yıl :
2014
Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
OBJECTIVE: The purpose of this study was to explore the association between the TNF-α rs1800629 (also refers as -308G/A) polymorphism and asthma susceptibility. METHODS: We searched the Pubmed, Embase, Cochrane Central Register of Controlled Trials (CENTRAL) and Wanfang databases. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to calculate the strength of association. RESULTS: A total of 34 studies involving 5477 asthma patients and 5962 controls were included in present study. The results indicated that TNF-α rs1800629 polymorphism was significantly associated with asthma risk in a recessive genetic model (OR = 1.46, 95% CI 1.21-1.76, P<0.0001). Subgroup analyses found that the TNF-α rs1800629 polymorphism was significantly associated with asthma risk in West Asians and South Asians (OR = 2.47, 95% CI = 1.48-4.12, P = 0.0005; OR = 1.83, 95% CI = 1.42-2.36, P<0.00001), but not East Asians and Caucasians. Furthermore, significant association also was observed in allergic asthma (OR = 1.51, 95% CI = 1.24-1.83, P<0.0001), adults and children (OR = 1.43, 95 CI%  = 1.07-1.91, P = 0.02; OR = 1.57, 95% CI = 1.19-2.06, P = 0.001). CONCLUSIONS: This meta-analysis suggested that the rs1800629 polymorphism in TNF-α was a risk factor for asthma.
DOI : 10.1371/journal.pone.0099962
ISSN: 1932-6203
Cilt: 9
Sayı: 6
Sayfa: e99962
23
Photoinduced energy transfer and charge transfer on squarylium cyanine dyes
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Chinese Journal of Chemistry
Yazar(lar) :
Zhao Wei , Zhang Bao-Wen , Hou Yuan-Jun , Cao Yi
Konu :
General Chemistry
Yıl :
2010
Zhang Bao-Wen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
A series of squarylium cyanine dyes (Sqs) were synthesised to explore their applications in functional devices. Preliminary investigation on the mechanism involved in these devices was carried out. Spectroscopic behavior of Sqs with porphyrin (P), 8‐hydroxyquinolium aluminum (Alq) and ruthenium bipyridyl complex (Ru(bipy)) in solution, in film and on nanocrystalline TiO2 was investigated, respectively. A mechanism including photoinduced energy transfer and charge transfer processes was suggested in the corresponding practical devices. By means of doping, a red organic electroluminescent device (ELD) using Sq‐doped Alq as the emission layer (EML) has been developed, and the total light to electricity efficiency of nanocrystalline TiO2 electrode based on using Sq‐doped Ru(bipy) M photosensitizer has been improved greatly in the whole visible region, particularly in the red area above 600 nm.
DOI : 10.1002/cjoc.19980160603
ISSN: 1001-604X
Sayı: 6
Cilt: 16
Sayfa: 499-508
24
The Electrolytic-Coloured, Anodized Aluminium Selective Absorber Coating and its Optical Properties
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
International Journal of Solar Energy
Yayıncı:
Informa UK Limited
Yazar(lar) :
ZHAO YU-WEN , HUONG HAN-FEN , ZHANG BAO-YING
Konu :
General Energy, Fuel Technology, Renewable Energy, Sustainability and the Environment, Process Chemistry and Technology, Water Science and Technology, Fluid Flow and Transfer Processes
Yıl :
1985
ZHANG BAO-YING
Yayıncı Web Sitesi
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Kaydet Alıntıla
This paper describes the technology and optical properties of the selective absorber coating prepared on industrial pure aluminium or aluminium alloys by the anodizing and colouring method. The optical properties of the coating are solar absorptance αs = 0.94 (AM2) and normal thermal emittance ε = 0.10; the coating was stable during the ageing test. Scanning electron micrographs of surface morphology and fracture section as well as Auger depth profiling data of the coating are given. Based on this information, a coating structure model of Ni particle pigmented A12O3 film is proposed in which the Ni concentration has a graded distribution. Bruggeman effective medium theory and multilayer matrix technique are used to calculate the spectral reflectance of the coating in the wavelength range 0.3 to 20 μm. The result shows that the theoretical value is approximately in agreement with the experimental data. The effect of morphology on the optical properties of coatings is also discussed.
DOI : 10.1080/01425918508914398
ISSN: 0142-5919
Sayı: 4-5
Cilt: 3
Sayfa: 271-285
25
Equal status in Ultimatum Games promotes rational sharing
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Nature
Dergi:
Scientific Reports
Yayıncı:
Springer Science and Business Media LLC
Yazar(lar) :
Xiao Han , Shinan Cao , Jian-Zhang Bao , Wen-Xu Wang , Boyu Zhang , Zi-You Gao , Angel SánchezXiao Han , Shinan Cao , Jian-Zhang Bao , Wen-Xu Wang , Boyu Zhang , Zi-You Gao , Angel Sánchez
Yıl :
2018
Jian-Zhang Bao Jian-Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
DOI : 10.1038/s41598-018-19503-x
ISSN: 2045-2322
Sayı: 1
Cilt: 8
26
Opting out against defection leads to stable coexistence with cooperation
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Nature
Dergi:
Scientific Reports
Yayıncı:
Springer Science and Business Media LLC
Yazar(lar) :
Bo-Yu Zhang , Song-Jia Fan , Cong Li , Xiu-Deng Zheng , Jian-Zhang Bao , Ross Cressman , Yi TaoBo-Yu Zhang , Song-Jia Fan , Cong Li , Xiu-Deng Zheng , Jian-Zhang Bao , Ross Cressman , Yi Tao
Yıl :
2016
Jian-Zhang Bao Jian-Zhang Bao
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
DOI : 10.1038/srep35902
ISSN: 2045-2322
Sayı: 1
Cilt: 6
27
Flow behaviors and processing maps of as-cast and as-homogenized AZ91 alloy
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Journal of Alloys and Compounds
Yayıncı:
Elsevier
Yazar(lar) :
Meng Mu , Zhang Zhi-min , Zhang Bao-hong , Dou Jin
Yıl :
2012
Zhang Bao-hong
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Compression tests of as-cast and as-homogenized AZ91 alloy were performed at the temperature range from 473 K to 673 K and the strain rate range from 0.001 s−1 to 5 s−1, and the flow stress data obtained from the tests were used to develop the processing maps. By analysis, the main differences are as follows: the flow stress of the as-cast AZ91 alloy is higher at the lower temperatures (473 K) because of the strengthening β-phase distributing along grain boundaries. The efficiency of power dissipation of as-homogenized AZ91 alloy is greater than the as-cast state below 650 K because of a larger proportion of twining and/or DRX, and the as-homogenized state still owes the characteristics of stable flow at 473 K/0.001 s−1. The optimum deformation parameters gained by the processing maps and microstructure are the same for different states, and the temperature and strain rate, respectively, are range from 623 K to 673 K and from 0.001 s−1 to 0.03 s−1.
DOI : 10.1016/j.jallcom.2011.09.102
Anahtar Kelimeler : AZ91 alloy, Flow behavior, Processing map
ISSN: 0925-8388
Cilt: 513
Sayfa: 112-117
Sınıflandırma :
28
Creep Behavior of a 4.5%Re/3.0%Ru Containing Single Crystal Nickel-based Superalloy at Elevated Temperature
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Journal of Materials Engineering
Yazar(lar) :
SHU De-long , TIAN Su-gui , WU Jing , ZHANG Bao-shuai , LIANG Shuang
Yıl :
2017
ZHANG Bao-shuai
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
The creep behavior of a containing 4.5%Re/3.0%Ru single crystal nickel-based superalloy at elevated temperatures was investigated by means of creep properties measurement and microstructure observations to specimens in different creep stages by SEM and TEM. Results show that the alloy exhibits good creep resistance at high temperature, and the creep life of the alloy at 1040℃/160MPa reaches 725h. During creep at high temperature, the γ' phase in alloy transforms into the N-type rafted structure along the direction vertical to the stress axis, the deformation mechanism of alloy during steady state creep is dislocations slipping in γ matrix and climbing over the rafted γ' phase. In the latter period of creep, the deformation mechanism of alloy is dislocations slipping and shearing into the rafted γ' phase. The alternate slipping of dislocations results in the twist of the rafted γ' phase to promote the initiation and propagation of the cracks along the interfaces of γ/γ' phases up to creep fracture, which is thought to be the fracture mechanism of alloy during creep at high temperature.
DOI : 10.11868/j.issn.1001-4381.2015.001144
Anahtar Kelimeler : single crystal nickel-based superalloy, re/ru, high temperature creep property, fracture mechanism
ISSN: 1001-4381
Cilt: 45
Sayı: 3
Sayfa: 41 - 46
Sınıflandırma :
29
Photoluminescence quenching of quantum-confined cadmium sulfide clusters by norbornadiene derivatives
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Chinese Journal of Chemistry
Yazar(lar) :
Xie Pu-Hui , Wang Xue-Song , Zhang Bao-Wen , Cao Yi
Konu :
General Chemistry
Yıl :
2010
Zhang Bao-Wen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Influence of norbornadiene and its derivatives on the photoluminescence (PL) of quantum‐confined cadmium sulfide clusters (Q‐CdS) prepared in reverse micelles wm investigated. It was found that norbornadiene‐2,3‐dicarboxylic acid (3) and its monopotassium salt (4) quenched PL intensity by 77% and 62%, respectively, whereas its dipotassium salt (a), norbornadiene (1) and norbornadiene‐2,3‐dimethylcarboxylate (2) had no effect on PL intensity. The formation constants for adducts formed between defect sites at the surface of Q‐CdS clusters and 3 or 4 were also determined. PL quenching effect was attributed to the presence of ionizable proton which is considered to be able to trap photogenerated electrons and remove them from possible decay process. Measurements of the PL decay by single photon counting technique also supported these steady‐state observations.
DOI : 10.1002/cjoc.19980160203
ISSN: 1001-604X
Sayı: 2
Cilt: 16
Sayfa: 109-117

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