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s-fuzzy Version of stone's Theorem for Distributive Lattices

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模糊系统与数学 2011年第4期25卷 47-54页

作者： Y.s.Pawar s.s.Khopade Department of Mathematics Shivaji University

In this paper,we initiate a study of s-fuzzy ideal(filter) of a lattice where s stands for a meet semilattice.A s-fuzzy prime ideal(filter) of a lattice is defined and it is proved that a s-fuzzy ideal(filter) of a lattice is s-fuzzy prime ideal(filter) if and only if any non-empty α-cut of it is a prime ideal(filter).stone's theorem for a distributive lattice is extended by considering s-fuzzy ideals(filters).

关键词： Distributive Lattice semilattice Fuzzy Ideal Fuzzy Filter Prime Fuzzy Ideal Prime Fuzzy Filter

Heterologous expression of bacteriocin E-760 in Chlamydomonas reinhardtii and functional analysis

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Phyton-International Journal of Experimental Botany 2019年第1期88卷 25-35页

作者： Quezada-Rivera JJ re soria-Guerra Fs Pérez-Juárez L Martínez-González sE Valdés-Rodríguez NL Vasco-Méndez JF Morales-Domínguez Departamento de Química Universidad Autónoma de AguascalientesUniversidad No.940Ciudad UniversitariaC.P.20131AguascalientesAgs.México Facultad de Ciencias Químicas Universidad Autónoma de San Luis PotosíZona Universitaria PonienteC.P.78290San Luis PotosíS.L.P.México Departamento de Biotecnología y Bioquímica Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalCinvestav-Unidad Irapuato.Km.9.6 Libramiento Norte Carr.Irapuato-León 36824 IrapuatoGto.México

The use of antimicrobial peptides(AMPs)synthesized by bacteria(bacteriocins)is an alternative for combating multidrug resistant bacterial strains and their production by recombinant route is a viable option for their mass *** bacteriocin E-760 isolated from the genus Enterococcus *** been shown to possess inhibitory activity against Gram-negative and Gram-positive *** this study,the expression of a chimeric protein coding for E-760 in the nucleus of *** was evaluated,as well as,its antibacterial *** synthetic gene E-760s was inserted into the genome of *** using Agrobacterium tumefaciens.A transgenic line was identified in TAP medium with hygromycin and also by *** increment in the culture medium temperature of the transgenic strain at 35°C for 10 minutes,increased the production level of the recombinant protein from 0.14(Noninduced culture,NIC)to 0.36%(Induced culture,IC)of total soluble proteins(TsP);this was quantified by an ELIsA *** E-760 possesses activity against staphylococcus aureus in 0.34 U log,streptococcus agalactiae in 0.48 U log,Enterococcus faecium in 0.36 U log,Pseudomonas aeruginosa in 2 U log and for Klebsiella pneumoniae,the activity was 0.07 U *** results demonstrate that the nucleus transformation of *** can function as a stable expression platform for the production of the synthetic gene E-760 and it can potentially be used as an antibacterial agent.

关键词： Heterologous expression Antibacterial activity Bacteriocin E-760 Chlamydomonas reinhardtii Log inactivation Nuclear transformation

Factors associated with negative evaluation on China's health care services among international floating migrants to China

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Factors associated with negative evaluation on China's healt...

Dirac Equation and some Quasi-Exact solvable Potentials in the Turbiner's Classification

2017年中国卫生统计学学术年会

作者： re Mi-na HE Qiang-sheng GU Jing school of Public Health Sun Yat-sen University

Background:Guangzhou attracts a large number of international floating *** population encounter many barriers in accessing to medical services in China and there may be differences in people in different socioeconomic *** this study,we aimed to identify the evaluation of foreigners’personal health and health service availability and to provide evidence to future health policy for those migrants in China.

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Communications in Theoretical Physics 2013年第9期60卷 296-302页

作者： s.Aghaei A.Chenaghlou Department of Physics Faculty of SciencesSahand University of Technology

In this paper quasi-exact solvability （QEs） of Dirac equation with some scalar potentials based on s/（2） Lie algebra is studied. According to the quasi-exact solvability theory, we construct the configuration of the classes II, IV, V, and X potentials in the Turbiner＇s classification such that solved and the Bethe ansatz equations are derived in order to the Dirac equation with scalar potential is quasi-exactly obtain the energy eigenvalues and eigenfunctions.

关键词： Dirac equation quasi-exact solvability supersymmetric quantum mechanics

Hitchhiker＇s guide to genetic diversity in socially structured populations

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Current Zoology 2012年第2期58卷 287-297页

作者： L. s. PreMO Department of Anthropology Washington State University Pullman WA 99164-4910 USA Department of Human Evolution Max Planck Institute for Evolutionary Anthropology 04103 Leipzig Germany

When selection increases the frequency of a beneficial gene substitution it can also increase the frequencies of linked neutral alleles through a process called genetic hitchhiking. A model built to investigate reduced genetic diversity in Pleistocene hominins shows that genetic hitchhiking can have a strong effect on neutral diversity in the presence of culturally mediated mi- gration. Under conditions in which genetic and cultural variants are transmitted symmetrically, neutral genes may also hitchhike to higher frequencies on the coattails of adaptive cultural traits through a process called cultural hitchhiking. Cultural hitchhiking has been proposed to explain why some species of matrilineal whales display relatively low levels of mitochondrial DNA diver- sity, and it may be applicable to humans as well. This paper provides a critical review of recent models of both types of hitch- hiking in socially structured populations. The models＇ assumptions and predictions are compared and discussed in the hope that studies of reduced genetic diversity in humans might improve our understanding of reduced genetic diversity in other species, and vice versa

关键词： Cultural group selection Cultural hitchhiking Culturally mediated migration Diversity Evolution Genetic hitch- hiking

Generalised tanh-shaped hyperbolic potential: Klein–Gordon equation's bound state solution

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Communications in Theoretical Physics 2023年第7期75卷 22-32页

作者： V H Badalov s V Badalov Institute for Physical Problems Baku State University1148 BakuAzerbaijan Theoretical Materials Physics Paderborn UniversityD-33098 PaderbornGermany Theoretical PhysicsⅦ University of BayreuthD-95440 BayreuthGermany

The development of potential theory heightens the understanding of fundamental interactions in quantum *** this paper,the bound state solution of the modified radial Klein–Gordon equation is presented for generalised tanh-shaped hyperbolic potential from the Nikiforov–Uvarov *** resulting energy eigenvalues and corresponding radial wave functions are expressed in terms of the Jacobi polynomials for arbitrary l *** is also demonstrated that energy eigenvalues strongly correlate with potential parameters for quantum *** particular cases,the generalised tanh-shaped hyperbolic potential and its derived energy eigenvalues exhibit good agreement with the reported ***,the rovibrational energies are calculated for three representative diatomic molecules,namely H2,HCl and *** lowest excitation energies are in perfect agreement with experimental ***,the potential model is displayed to be a viable candidate for concurrently prescribing numerous quantum systems.

关键词： Klein-Gordon equation hyperbolic potential Nikiforov-Uvarov method diatomic molecules

Parrondo's paradox for chaos control and anticontrol of fractional-order systems

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Chinese Physics B 2016年第1期25卷 507-513页

作者： Marius-F Danca Wallace K s Tang Department of Mathematics and Computer science Avram Iancu University Romanian Institute for science and Technology Department of Electronic Engineering City University of Hong Kong

We present the generalized forms of Parrondo＇s paradox existing in fractional-order nonlinear systems. The gener- alization is implemented by applying a parameter switching （Ps） algorithm to the corresponding initial value problems associated with the fractional-order nonlinear systems. The Ps algorithm switches a system parameter within a specific set of N 〉 2 values when solving the system with some numerical integration method. It is proven that any attractor of the concerned system can be approximated numerically. By replacing the words ＂winning＂ and ＂loosing＂ in the classical Parrondo＇s paradox with ＂order＂ and ＂chaos＂, respectively, the Ps algorithm leads to the generalized Parrondo＇s paradox： chaos1 ＋ chaos2 ＋..- ＋ chaosN = order and order1 ＋ order2 ＋.-. ＋ orderN = chaos. Finally, the concept is well demon- strated with the results based on the fractional-order Chen system.

关键词： Parrondo's paradox chaos control parameter switching algorithm fractional-order Chen system

Numerical modeling of cracking pattern's influence on the dynamic response of thickened tailings disposals: a periodic approach

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Earthquake Engineering and Engineering Vibration 2018年第1期17卷 179-190页

作者： Gabriel Ferrer Esteban sáez Christian Ledezma school of Engineering Pontificia Universidad Católica de Chile National research Center for Integrated Natural Disaster Management

Copper production is an essential component of the Chilean economy. During the extraction process of copper, large quantities of waste materials（tailings） are produced, which are typically stored in large tailing ponds. Thickened Tailings Disposal（TTD） is an alternative to conventional tailings ponds. In TTD, a considerable amount of water is extracted from the tailings before their deposition. Once a thickened tailings layer is deposited, it loses water and it shrinks, forming a relatively regular structure of tailings blocks with vertical cracks in between, which are then filled up with ＂fresh＂ tailings once the new upper layer is deposited. The dynamic response of a representative column of this complex structure made out of tailings blocks with softer material in between was analyzed using a periodic half-space finite element model. The tailings＇ behavior was modeled using an elasto-plastic multi-yielding constitutive model, and Chilean earthquake records were used for the seismic analyses. special attention was given to the liquefaction potential evaluation of TTD.

关键词： Thickened tailings Liquefaction Periodic modeling

Validation and application of Vierordt’’s spectrophotometric method for simultaneous estimation of tamoxifen/coenzyme Q10 in their binary mixture and pharmaceutical dosage forms

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Asian Journal of Pharmaceutical sciences 2016年第2期11卷 318-325页

作者： Eman s. El-Leithy Rania s. Abdel-Rashid Department of Pharmaceutics Faculty of Pharmacy Helwan University

For the sake of improving patient compliance and sustainability of chemotherapy healthcare system, both TC and CoQ10 were formulated as solid lipid nanoparticles (sLNs). The study was focused on establishing and validating a simple and reproducible spectrophotometric method for simultaneous determination of TC and CoQ10 in their binary mixture or pharmaceutical dosage forms. A new method based on simultaneous estimation of drug mixture without prior separation was developed. Validation parameters were checked with International Conference on Harmonization (ICH) guidelines. The accuracy and reproducibility of proposed method was statistically compared to HPLC. The TC and CoQ10 were quantified at absorptivity wavelengths of 236 nm and 275 nm, respectively. Calibration curves obeyed Beer’s law in range of 2–14 μg/ml with a correlation coefficient (R^2) of 0.999 in both methanol and simplified simulated intestinal fluid (ssIF). The %means recovery of TC and Co Q10 in pure state or binary mixture at various concentration levels were all around 100%.The low values of sD and %RsD (recision and accuracy of the proposed method. Formulated sLNs showed different %means recovery in range 81–92% for TC and 32–59% for CoQ10. The data obtained by applying simultaneous Vierordt’s equations showed no statistical significance in comparison to HPLC. Vierordt’s method was successfully applied as a simple, accurate, precise, and economical analysis method for estimating TC and CoQ10 concentrations in pure state, binary mixture and pharmaceutical dosage forms.

关键词： Tamoxifen citrate Coenzyme Q10 Binary mixture solid lipid nanoparticles Validation