期刊文献+
共找到440篇文章
< 1 2 22 >
每页显示 20 50 100
Corresponding Prime Number Distribution Equation 被引量:1
1
作者 Dan Liu Chenglong Liu 《Journal of Applied Mathematics and Physics》 2023年第11期3354-3365,共12页
The conjecture of twin prime numbers is a mathematical problem. Proving the twin prime conjecture using traditional modern number theory is extremely profound and complex. We propose an elementary research method for ... The conjecture of twin prime numbers is a mathematical problem. Proving the twin prime conjecture using traditional modern number theory is extremely profound and complex. We propose an elementary research method for corresponding prime number, proved that the conjecture of twin prime numbers and obtain the corresponding prime distribution equation. According to the distribution rate of corresponding prime numbers, the distribution pattern of twin prime numbers was proved the distribution rate theorem. This is the distribution rate of prime numbers corresponding to composite numbers, which approaches the distribution rate of prime numbers corresponding to integers. Based on the corresponding prime distribution equation, obtain the twin prime inequality function. Then, the formula for calculating twin prime numbers was discussed. There is also the Hardy Littlewood conjecture. This provides a practical and feasible approach for studying the distribution of twin prime numbers. 展开更多
关键词 Prime Number Composite Number Twin Prime Numbers corresponding Prime Distribution Equation Twin Prime Inequality Function
下载PDF
Comprehensive precursor anomaly research based on earthquake corresponding relevancy spectrum 被引量:5
2
作者 Haitao Wang Qiong Wang Lanlan Tang 《Earthquake Science》 CSCD 2009年第6期675-681,共7页
With the aim to the quantification of anomaly identification and extraction for observed or analyzed records, we present two statistical methods of earthquake corresponding relevancy spectrum (ECRS) and sliding mean... With the aim to the quantification of anomaly identification and extraction for observed or analyzed records, we present two statistical methods of earthquake corresponding relevancy spectrum (ECRS) and sliding mean relevancy (SMR). With ECRS method, we can obtain the abnormal confidence attribute of data in different value ranges. Based on the relevancy spectrum in different studied time-intervals, we convert the original time sequence into relevancy time sequence, and can obtain the SMR time series by using the multi-point cumulative sliding mean method. Then we can identify the seismic precursor anomaly. We test this method by taking the time sequence of r/-value in the northern Tianshan region as original data. The result shows that when the studied time-interval is 18 months, the precursor anomaly can be identified bet- ter from sliding mean relevancy. The anomaly corresponding rate is 83 percent, the earthquake corresponding rate is 86 per- cent, and the anomaly is characteristic of the middle term. To try the research on multi-parameter comprehensive application, we take the Kalpin tectonic block in Xinjiang as our studied region, and analyze the spatial and temporal abnormal characters of multi-parameter sliding extreme-value relevancy (MSER) before mid-strong earthquakes in the Kalpin block. The result indicates that ECRS and SMR sequence in different time-intervals can not only be used to identify the precursor anomaly of single-item data, but also offer the data of quantitative single-item anomaly for comprehensive earthquake analysis and prediction. 展开更多
关键词 earthquake corresponding relevancy spectrum(ECRS) sliding mean relevancy (SMR) multi-parameter sliding extreme-value relevancy(MSER) comprehensive precursor anomaly
下载PDF
Estimation of Acentric Factor of Organic Compounds with Corresponding States Group Contribution Method 被引量:3
3
作者 衣守志 贾原媛 马沛生 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第5期709-712,共4页
A new estimation method was proposed by combining the corresponding state principle with the group contribution method through introducing the concept of assumed-critical properties. Combining it with the Reidel equat... A new estimation method was proposed by combining the corresponding state principle with the group contribution method through introducing the concept of assumed-critical properties. Combining it with the Reidel equation, a new acentric factor correlation equation (CSGC-Reidel) was developed. Contribution values of 70 groups were obtained by correlating acentric factor data of 228 organic compounds of 14 type substances including saturated hydrocarbons, unsaturated hydrocarbons, cyclanes, aromatics, oxygen compounds, nitrogen compounds,halohydrocarbons, etc. The average error of acentric factor is 3.52% between the literature data and the predicated with the new estimation method. 展开更多
关键词 acentric factor estimation of properties corresponding state group contribution (CSGC) Edmister equation Reidel equation
下载PDF
Bisarylmaleimides & the Corresponding Indolocarbazoles as Kinase Inhibitors 被引量:1
4
作者 Scott E. Conner Harold B. Brooks +8 位作者 Eileen Considine Jack A. Dempsey Margaret M. Faul Cathy Ogg Bharvin Patel Richard M. Schultz Charles D. Spencer Beverly Teicher Scott A. Watkins 《合成化学》 CAS CSCD 2004年第z1期11-11,共1页
关键词 Bisarylmaleimides the corresponding Indolocarbazoles as Kinase Inhibitors CDK
下载PDF
NEW SHAPE FACTOR FOR CORRESPONDING STATES PRINCIPLE
5
作者 陈新志 侯虞钧 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1997年第2期77-82,共6页
1 INTRODUCTIONThe CSP(Corresponding States Principle)has been considered to be a useful methodfor the prediction of fluid properties from a minimum amount of information.One ofits form,the shape factor methods is deve... 1 INTRODUCTIONThe CSP(Corresponding States Principle)has been considered to be a useful methodfor the prediction of fluid properties from a minimum amount of information.One ofits form,the shape factor methods is developed through relating the pVT of any interestedpure fluid"a"to that of another"0"by 展开更多
关键词 corresponding STATES PRINCIPLE EQUATION of state THERMODYNAMIC PROPERTY
下载PDF
ESTIMATION OF THEMAL PRESSURE COEFFICIENTS FOR LIQUIDS BASED ON THE LAW OF CORRESPONDING STATE
6
作者 李鸿仪 刘国杰 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1994年第1期52-59,共8页
1 INTRODUCTIONThe p-V-T relation of liquids can be represented not only by equations of state,but alsoby the following three partial differentials: α=(V/T)_p/V (1) β=-(V/p)_T/V (2) γ=(p/T)_V (3)Where p,V and T deno... 1 INTRODUCTIONThe p-V-T relation of liquids can be represented not only by equations of state,but alsoby the following three partial differentials: α=(V/T)_p/V (1) β=-(V/p)_T/V (2) γ=(p/T)_V (3)Where p,V and T denote the pressure,volume and temperature of liquids;α,βand γ are thethermal expansion,isothermal compressibility and thermal pressure coefficient,respectively. Since the densities of liquids at various temperature and constant pressure can easily bemeasured by experiments,values of α can be obtained easily.If the values of.γ can beestimated,then values of β can be acquired from the following equation: 展开更多
关键词 corresponding STATE INTERNAL PRESSURE EQUATION of STATE
下载PDF
THE CORRESPONDING ANALYSIS OF HEAVY-METAL POLLUTION OF SOIL IN ZHUZHOU CITY
7
作者 尚金城 龙爱民 +1 位作者 李斌 姜建祥 《Chinese Geographical Science》 SCIE CSCD 1996年第2期177-184,共8页
THE CORRESPONDING ANALYSIS OF HEAVY-METAL POLLUTION OF SOIL IN ZHUZHOU CITY ShangJincheng(尚金城);LongAimin(龙爱民... THE CORRESPONDING ANALYSIS OF HEAVY-METAL POLLUTION OF SOIL IN ZHUZHOU CITY ShangJincheng(尚金城);LongAimin(龙爱民)LiBin(李斌);JiangJ... 展开更多
关键词 HEAVY-METAL POLLUTION of SOIL corresponding ANALYSIS Zhuzhou CITY
下载PDF
A Perfect Shape Factor Corresponding States Principle for Pure Non-Polar and Polar Fluids
8
作者 陈新志 王连尉 侯虞钧 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2001年第4期421-426,共6页
In the two-parameter corresponding states principle(CSP), the critical compressibility factors of the fluid under study(called 'a' fluid) and the reference fluid(called 'o' fluid) must be identical. Th... In the two-parameter corresponding states principle(CSP), the critical compressibility factors of the fluid under study(called 'a' fluid) and the reference fluid(called 'o' fluid) must be identical. This is not generally observed in nature. To overcome this limitation, a perfect shape factor CSP is proposed in which the compressibility factors of 'a' and 'o' fluids are corresponded perfectly by introducing a new pressure shape factor 8. Using methane as the 'o' fluid, the shape factors of many fluids are calculated from PVT properties at saturation state and the second virial coefficients. Models are also formulated for the shape factors with the assumption of is a function of temperature and volume while 6 and 5 are temperature dependent only. The models described the shape factors satisfactorily in whole region including vapor, liquid and their co-existing phases. The perfect shape factor CSP could be applied for both polar and non-polar fluids. 展开更多
关键词 perfect shape factor corresponding states principle thermodynamic property equation of state
下载PDF
Bekenstein-Hawking Cosmological Entropy and Correction Term Corresponding Cosmological Horizon of Rotating and Charged Black String
9
作者 ZHAO Ren WU Yue-Qin +1 位作者 ZHANG Li-Chun LI Huai-Fan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第8期264-268,共5页
Utilizing the quantum statistical method and applying the new state density equation motivated by generalized uncertainty principle in quantum gravitaty, we avoid the difficulty in solving wave equation and directly c... Utilizing the quantum statistical method and applying the new state density equation motivated by generalized uncertainty principle in quantum gravitaty, we avoid the difficulty in solving wave equation and directly calculate the partition function of bosonic and fermionic field on the background of rotating and charged black string. Then near the cosmological horizon, entropies of bosonic and fermionic field are calculated on the background of black string. When constant A introduced in generalized uncertainty principle takes a proper value, we derive Bekenstein- Hawking entropy and the correction value corresponding cosmologicaJ horizon on the background of rotating and charged black string. Because we use the new state density equation, in our calculation there are not divergent term and small mass approximation in the original brick-wall method. From the view of quantum statistic mechanics, the correction value to Bekenstein-Hawking entropy of the black string is derived. It makes people deeply understand the correction value to the entropy of the black string cosmological horizon in non-spherical coordinate spacetime. 展开更多
关键词 quantum statistics nonspherical symmetry spacetime generalized uncertainty principle entropy corresponding black string cosmological horizon
下载PDF
A NEW ROUTE FROM HETEROAROMATIC BORON COMPOUNDS TO CORRESPONDING KETONES VIA DICHLOROCARBENE INSERTION UNDER PHASE TRANSFER CONDITIONS
10
作者 De Jie ZHAO Jin Kun HUANG Zi Xing SHAN 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第5期385-386,共2页
The reactions of tri-2-benzofuranylborane or aminoethyl di-2-thienylborinate and 2-thienylphenylborinate with dichlorocarbene generated in situ from chloroform under phase transfer conditions were explored as a new ro... The reactions of tri-2-benzofuranylborane or aminoethyl di-2-thienylborinate and 2-thienylphenylborinate with dichlorocarbene generated in situ from chloroform under phase transfer conditions were explored as a new route for the preparation of heteroaromatic ketones. It was found that a good yield of the ketones can be obtained by solid-liquid system. 展开更多
关键词 TEBA A NEW ROUTE FROM HETEROAROMATIC BORON COMPOUNDS TO corresponding KETONES VIA DICHLOROCARBENE INSERTION UNDER PHASE TRANSFER CONDITIONS VIA
下载PDF
DETERMINATION OF STABILITY CONSTANTS OF THE COORDINATION COMPOUNDS OF Au(Ⅲ)-2-MERCAPTOPYRIDINE-1-OXIDE AND METHYL DERIVATIVES——METHOD OF DUAL-WAVELENGTH CORRESPONDING SOLUTIONS
11
作者 Yang CAO Bao Lin SONG Department of Chemistry,Xuzhou Teacher’s College,Xuzhou 221009Cheng ZENG Coordination Chemistry Institute,Nanjing University,Nanjing 210008 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第1期59-62,共4页
In this paper,we report the deductive formula used for the method of dual-wavelength corresponding solutions under condition of having ligand interference and the stability constants of three new coordination compound... In this paper,we report the deductive formula used for the method of dual-wavelength corresponding solutions under condition of having ligand interference and the stability constants of three new coordination compounds [AuL_2]^+determined with this method.The stability of the three compounds,the necessity of controlling pH in experimental systems and the advantage of this method are discussed in detail. 展开更多
关键词 DETERMINATION OF STABILITY CONSTANTS OF THE COORDINATION COMPOUNDS OF Au MERCAPTOPYRIDINE-1-OXIDE AND METHYL DERIVATIVES METHOD OF DUAL-WAVELENGTH corresponding SOLUTIONS
下载PDF
CHARACTERIZATION OF HLDER SPACES CORRESPONDING TO DITZIAN-TOTIK MODULUS OF SMOOTHNESS
12
作者 Anna Kamont(Mathematical Institute of the Polish Academy of Sciences ul. Abrahama 1881-825 Sopot, Poland e-mail: A. Kamont@impan. gda. pl) 《Analysis in Theory and Applications》 2000年第1期73-91,共19页
For the step-weight function , we prove that the Holder spaces ∧a,p on the interval [-1,1], defined in terms of moduli of smoothness with the step-weight function ,are linearly isomorphic to some sequence spaces, an... For the step-weight function , we prove that the Holder spaces ∧a,p on the interval [-1,1], defined in terms of moduli of smoothness with the step-weight function ,are linearly isomorphic to some sequence spaces, and the isomorphism is given by the cofficients of function with respect to a system of orthonormal splines with knots uniformly distributed according to the measure with density . In case ∧a,p is contained in the space of continuous functions, we give a discrete characterization of this space, using only values of function at the appropriate knots. Application of these results to characterize the order of polynomial approximation is presented. 展开更多
关键词 MATH LDER SPACES corresponding TO DITZIAN-TOTIK MODULUS OF SMOOTHNESS CHARACTERIZATION OF H
下载PDF
Synthesis of(±)-Deoxyschisandrin and the Corresponding Trans-lsomer
13
作者 Jun Biao CHANG(Henan Institute of Chemistry,Zhengzhou,450003)Jing Xi XIE(Institute of Materia Medica,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing,100050) 《Chinese Chemical Letters》 SCIE CAS CSCD 1996年第9期801-802,共2页
Deoxyschisandrin 1 and the corresponding trans - isomer 2 were readily prepared by intramolecular oxidative coupling of 1.4 -diaryl-2.3-dimethylbutanes 7 and 6 with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in t... Deoxyschisandrin 1 and the corresponding trans - isomer 2 were readily prepared by intramolecular oxidative coupling of 1.4 -diaryl-2.3-dimethylbutanes 7 and 6 with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in trifluoroacetic acid(TFA). 展开更多
关键词 Synthesis of Deoxyschisandrin and the corresponding Trans-lsomer
下载PDF
Current Sino-Latin American Relations and the Corresponding Policies
14
作者 Latin America Research Group, CICIR 《Contemporary International Relations》 2004年第4期12-21,共10页
关键词 WWW HTTP World 2003 Current Sino-Latin American Relations and the corresponding Policies
下载PDF
Cultural difference in English and Chinese corresponding lexis
15
作者 LIN Yi-xin 《Sino-US English Teaching》 2009年第3期60-63,共4页
The associated meaning of language might be different under different cultural circumstances. This paper mainly concerns about the influence of culture on English and Chinese corresponding lexis and its pedagogical si... The associated meaning of language might be different under different cultural circumstances. This paper mainly concerns about the influence of culture on English and Chinese corresponding lexis and its pedagogical significance, analyzing the issue from three aspects: the analysis and contrast of corresponding lexis, the relationship between corresponding lexis and culture and its implication in teaching practice. 展开更多
关键词 LANGUAGE CULTURE associated meaning corresponding lexis pedagogical implication
下载PDF
Research on the Novel Empty Core Needle Transdermal Drug Delivery Mode and the Corresponding Advantages
16
作者 Ding Tang Xu Gao 《International Journal of Technology Management》 2016年第8期83-85,共3页
In this paper, we conduct research on novel empty core needle transdermal drug delivery mode and the corresponding advantages.Compared with the traditional mode of drug delivery, transdermal drug delivery system advan... In this paper, we conduct research on novel empty core needle transdermal drug delivery mode and the corresponding advantages.Compared with the traditional mode of drug delivery, transdermal drug delivery system advantages obvious drug absorbed from the digestivetract, intestinal factors such as interference, “the first effect” can avoid liver can maintain the stability of the human body blood drugconcentration to increase effectiveness. This paper analyzes the issues from the two aspects. (1) Transdermal Therapeutie System Analysis; (2)Microneedles in Transdermal Drug Delivery. By considering the experimental analysis, we conduct the numerical simulation on the mentionedissues. The experiment result verifi es and refl ects the general properties of the designed methodology that will enhance the overall researchperformance of the related topics. 展开更多
关键词 Drug Delivery Empty Core Needle TRANSDERMAL corresponding Advantages Mode.
下载PDF
Research on the O2O Mode and Corresponding Influences on the Online and Offline Internet Marketing
17
作者 Yajuan Sun 《International Journal of Technology Management》 2016年第1期16-18,共3页
In this paper, we conduct research on the O2O mode and corresponding influence on the online and offline Internet marketing. Precision marketing is on the basis of fully understanding of consumer information, accordin... In this paper, we conduct research on the O2O mode and corresponding influence on the online and offline Internet marketing. Precision marketing is on the basis of fully understanding of consumer information, according to its characteristics and primary preferences targeted to carry out the one-to-one marketing. Mobile Internet users are mostly fixed which can be the new network technology in-depth insight into consumer interest and demand, and to establish for each specific customer database. Based on the analysis of customer data, then according to the characteristics of the different customers and the preference information such as the precision marketing, at the same time which can also according to customer' s feedback information targeted adjustment of products and the marketing, in order to better meet the needs of customers. Our research combines the O2O concepts and the technique to propose the novel marketing paradigm which is of great importance. 展开更多
关键词 O2O Mode Online and Offline Intemet Marketing corresponding Influences.
下载PDF
The Risk Identification and Corresponding Strategy of Transnational Financial Accounting Outsourcing
18
作者 Meng WU Lei YANG 《International Journal of Technology Management》 2015年第6期36-38,共3页
Financial Accounting outsourcing in recent years has been the development of new outsourcing model with more and more enterprises management and CFOs of all ages. With the development of financial accounting outsourci... Financial Accounting outsourcing in recent years has been the development of new outsourcing model with more and more enterprises management and CFOs of all ages. With the development of financial accounting outsourcing services, it will lead to economic, social and development prospects that are also widely recognized. Not only small and medium companies are keen to own non-core financial accounting processes outsourced to agencies, large group has the entire basis of accounting processes tend to be outsourced to a qualified and experienced outsourcing service. Group companies or large multinationals are gradually re-integration of the financial sector, the basic financial accounting processes separate from the daily work out for outsourcing to focus resources on the development of core competencies. 展开更多
关键词 International Financial Accounting Risk Identification corresponding Strategy
下载PDF
Statics of FGM circular plate with magneto-electro-elastic coupling:axisymmetric solutions and their relations with those for corresponding rectangular beam
19
作者 Yanzheng WANG Weiqiu CHEN Xiangyu LI 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2015年第5期581-598,共18页
This paper investigates the static behavior of a functionally graded circular plate made of magneto-electro-elastic(MEE) materials under tension and bending.The analysis is directly based on the three-dimensional go... This paper investigates the static behavior of a functionally graded circular plate made of magneto-electro-elastic(MEE) materials under tension and bending.The analysis is directly based on the three-dimensional governing equations for magnetoelectro-elasticity, with the boundary conditions on the upper and lower surfaces satisfied exactly and those on the cylindrical surface satisfied approximately(in the Saint Venant sense). The analytical solutions, derived with a direct displacement method, are valid for any functionally graded material(FGM) with its properties varying independently in a continuous manner along the thickness direction. For homogeneous materials, these solutions are degenerated to the ones available in the literature. Interesting relations are also found between the solutions for a functionally graded magneto-electro-elastic(FGMEE) circular plate and those for an FGMEE rectangular beam, and even those for a functionally graded elastic beam when only the elastic displacements are considered. The beam solutions are also derived using a direct displacement method. Numerical examples are presented to verify the present analytical solutions, show the effects of material heterogeneity and multi-field coupling, and indicate the correspondence between the plate solutions and beam solutions. 展开更多
关键词 functionally graded circular rectangular magneto correspondence elasticity heterogeneity exactly piezoelectric
下载PDF
Special Relativity’s “Newtonization” in Complex “Para-Space”: The Two Theories Equivalence Question
20
作者 Jerzy K. Filus 《Journal of Applied Mathematics and Physics》 2024年第7期2421-2451,共31页
Complex model, say C3, of “para-space” as alternative to the real M4 Minkowski space-time for both relativistic and classical mechanics was shortly introduced as reference to our previous works on that subject. The ... Complex model, say C3, of “para-space” as alternative to the real M4 Minkowski space-time for both relativistic and classical mechanics was shortly introduced as reference to our previous works on that subject. The actual aim, however, is an additional analysis of the physical and para-physical phenomena’ behavior as we formally transport observable mechanical phenomena [motion] to non-real interior of the complex domain. As it turns out, such procedure, when properly set, corresponds to transition from relativistic to more classic (or, possibly, just classic) kind of the motion. This procedure, we call the “Newtonization of relativistic physical quantities and phenomena”, first of all, includes the mechanical motion’s characteristics in the C3. The algebraic structure of vector spaces was imposed and analyzed on both: the set of all relativistic velocities and on the set of the corresponding to them “Galilean” velocities. The key point of the analysis is realization that, as a matter of fact, the relativistic theory and the classical are equivalent at least as for the kinematics. This conclusion follows the fact that the two defined structures of topological vector spaces i.e., the structure imposed on sets of all relativistic velocities and the structure on set of all “Galilean” velocities, are both diffeomorphic in their topological parts and are isomorphic as the vector spaces. As for the relativistic theory, the two approaches: the hyperbolic (“classical” SR) with its four-vector formalism and Euclidean, where SR is modeled by the complex para-space C3, were analyzed and compared. 展开更多
关键词 Special Relativity’s Hyperbolic Versus Circular Versions Galilean Kinematics Partial Equivalence of SR and Newton’s Theories Algebra of Relativistic and the corresponding Galilean Velocities
下载PDF
上一页 1 2 22 下一页 到第
使用帮助 返回顶部