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Exact Solutions of Klein-Gordon Equation with Scalar and Vector Rosen-Morse-Type Potentials

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Chinese Physics Letters 2008年第8期25卷 2754-2757页

作者： A. Soylu o. Bayrak i. Boztosun Department of Physics Nigde University 51350 Nigde Turkey Department of Physics Bozok University 66200 Yozgat Turkey Department of Physics Erciyes University 38039 Kayseri Turkey

We obtain an exact analytical solution of the Klein Gordon equation for the equal vector and scalar Rosen Morse and Eckart potentials as well as the parity-time （PT） symmetric version of the these potentials by using the asymptotic iteration method. Although these PT symmetric potentials are non-Hermitian, the corresponding eigenvalues are real as a result of the PT symmetry.

关键词： ASYMPToTiC iTERATioN METHoD NoN-HERMiTiAN HAMiLToNiANS PT-SYMMETRiC PoTENTiALS BoUND-STATES EiGENVALUE PRoBLEMS DiRAC-EQUATioN SCHRoDiNGER-EQUATioN SiMiLARiTY TRANSFoRMATioN REAL PARTiCLES

Antibacterial potency of methanol extracts of lower plants

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第3期8卷 189-191页

作者： oJo o.o. AJAYi A.o. ANiBiJUWoN i.i. Department of Microbiology Faculty of Science University of Ado-Ekiti Ado-Ekiti Ekiti State 234030 Nigeria

Antibacterial potency of methanol extracts of three green lower plants, Pneumatopteris afra, Platycerium bifurcatum and Nephrolepsis bisserata was determined using agar dilution method on clinical strains of Escherichia coli, Staphylococcus aureus, Klebsiella spp. and Salmomelia typhi. Antibacterial activities were observed at concentrations of 12.5, 25.0, 50.0 and 100.0 μg/ml. Their minimum inhibitory concentrations ranged from 12.5~100 μg/ml. Extracts of P. afra and P. bifurcatum were most active. Antibacterial activities observed with N. bisserata were less pronounced with no detectable activity at extract con-centrations of 12.5 and 25.0 μg/ml. E. coli, together with S. aureus appeared to be the most susceptible of the test bacteria while Klebsiella spp. was least sensitive. The significance of our findings is discussed.

关键词： Lower plants Extracts Antibacterial activity MiC (minimum inhibitory concentration)

Bianchi type i in f(T) gravitational theories

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Chinese Physics B 2016年第5期25卷 58-64页

作者： M i Wanas G G L Nashed o A ibrahim Astronomy Department Faculty of Science Cairo University Cairo Egypt Centre for Theoretical Physics The British University in Egypt El-Sherouk City Egypt Mathematics Department Faculty of Science Ain Shams University Cairo Egypt Egyptian Relativity Group (ERG) Giza Egypt

A tetrad field that is homogeneous and anisotropic which contains two unknown functions A（t） and B（t） of cosmic time is applied to the field equations of f（T）, where T is the torsion scalar, T = T~μ_（νρ）S_μ^（νρ）. We calculate the equation of continuity and rewrite it as a product of two brackets, the first is a function of f（T） and the second is a function of the two unknowns A（t） and B（t）. We use two different relations between the two unknown functions A（t） and B（t） in the second bracket to solve it. Both of these relations give constant scalar torsion and solutions coincide with the de Sitter one. So,another assumption related to the contents of the matter fields is postulated. This assumption enables us to drive a solution with a non-constant value of the scalar torsion and a form of f（T） which represents ΛCDM.

关键词： f(T) gravitational theory Bianchi type i special solutions

Studies on the anti-asthmatic and antitussive properties of aqueous leaf extract of Bryophyllum pinnatum in rodent species

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Asian Pacific Journal of Tropical Medicine 2013年第6期6卷 421-425页

作者： Edward o Salami Raymond i ozolua Stephen o okpo Gerald i Eze Dickson o Uwaya Department of Pharmacology and Toxicology Faculty of Pharmacy University of Benin Department of Anatomy School of Basic Medical SciencesUniversity of Benin Department of Pharmacology and Toxicology Faculty of PharmacyUniversity of Benin

objective:To evaluate the antiasthmatic and antitussive properties of the aqueous leaf extract of Bryophyilum pinnatum {***)(BP) ***:ovalbiunin-sensilized guinea pigs which were treated with BP for 21 consecutive days were exposed to 0.2%histamine aerosol in a glass *** viscosity,white blood cell and lymphocyte counts and tracheal wall morphometry were *** of cough were counted pre and post acute exposure of extract-treated(X7 d) guinea pigs to 7.5%citric acid aerosol in a *** red expectoration was estimated in mice after 7 d of daily administration of ***:Doses of 200 and 400 mg/kg/day(×21 d) BP significantly increased the time for guinea pigs to experience preconvulsive *** and salbutamol(0.5 mg/kg/day×21 d) reduced mucus viscosity in the sensitized group to values comparable with *** blood cell,lymphocyte counts and tracheal morphometry were not significantly *** doses of BP also significantly reduced the bouts of cough but only 400 mg/kg/day significantly inhibited the amount of phenol red ***:BP has demonstrated antiasthmatic and antitussive properties in these rodent *** properties may underscore its use in Nigerian ethnomedicine.

关键词： Bryophyllum pinnatum Antiasthmatic Antitussive Airway histology

Prognostic impact of inflammatory and nutritional biomarkers in pancreatic cancer

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World Journal of Clinical oncology 2025年第1期16卷 5-9页

作者： Macarena Teja María i Garrido Abrahams ocanto Felipe Counago Department of Radiation oncology GenesisCare-San Francisco de Asís University HospitalMadrid 28002Spain Department of Radiation oncology GenesisCare-Vithas La Milagrosa University HospitalMadrid 28010Spain National Director GenesisCare SpainMadrid 28043Spain Department of Medicine School of MedicineHealth and SportEuropean University of MadridMadrid 28670Spain

Pancreatic cancer is usually associated with a poor *** is the main curative treatment but pancreatic operations are aggressive and new tools that help clinicians to predict surgical and prognostic outcomes are *** et al recently published a retrospective,single centre cohort study evaluating the impact of seven nutritional and inflammatory markers in pancreatic cancer surgical patients:The albumin-to-globulin ratio,prognostic nutritional index(PNi),systemic immune-inflammation index(Sii),neutrophil-to-lymphocyte ratio(NLR),platelet-to-lymphocyte ratio(PLR),nutritional risk index,and the geriatric nutritional risk index.A significant correlation was found between the PNi,Sii,NLR,and PLR and a hospital discharge of less than 15 *** a univariable analysis,PNi,Sii,NLR and PLR were significantly related to recurrence-free survival and,in a multivariable analysis PNi was associated with overall *** meta-analyses corroborate the results in terms of prognosis but individual studies are discordant on their ***,the cut-off values for these markers vary significantly between studies and there are no clinical trials comparing them to identify the most relevant *** are limitations when implementing nutritional and inflammatory biomarkers into clinical practice and further studies are needed in order to answer these questions.

关键词： inflammatory biomarkers Nutritional biomarkers Pancreatic cancer Prognosis Surgical complications

Electrolytic deposition of super-smart composite coating of Zn-V2o5-Nbo2 on low carbon steel for defence application

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Defence Technology（防务技术） 2018年第5期14卷 446-450页

作者： o.S.i.Fayomi L.R.Kanyane A.P.i.Popoola S.o.oyedepo Department of Chemical Metallurgical and Materials EngineeringTshwane University of TechnologyP.M.B.X680PretoriaSouth Africa Department of Mechanical Engineering Covenant UniversityP.M.B 1023OtaNigeria

Despite the massive usages of low carbon steel in automobile for engineering components, its corrosion and high friction coefficient in aggressive environment make it limited in service. This paper is aimed at modifying low carbon steel structural component with thin film composite for enhanced mechanical and corrosion properties. The steel structure was electrodeposited with Zn-V_2 o_5 and embedded with varied Nbo_2 weight concentration of 6-12 wt % based electrolyte. Scanning electron microscope(SEM) and high optical microscope was used to study the microstructural evolution of the fabricated coatings. The thermal stability of the fabricated coatings was studied in an isothermal furnace at 300 ℃ and 600 ℃ and further characterized using a high tech optical microscope. Potentiodynamic polarization technique was used to investigate the corrosion behavior of the composites in 3.65% NaCl. From the result, the effect of Nbo_2 on Zn-V_2 o_5-Nbo_2 was massive with improved crystal grain within the coatings lattices. The coating possesses strong metallurgical bonding and good corrosion resistance properties of about 0.315 mm/yr corrosion rate compare to 4.1 mm/yr of as-received sample. No doubt the impact of thermal shock on the resilient characteristics of the composite coating was moderate owing to the stable adherent properties of the deposited coatings.

关键词： Electrodeposition Low carbon steel Micro-hardness Thermal stability corrosion behavior Rare earth metal(REM)

Recent advances in magnetic electrospun nanofibers for cancer theranostics application

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Progress in Natural Science:Materials international 2021年第6期31卷 835-844页

作者： Paula i.P.Soares Jo?o Paulo Borges CENiMAT/i3N Departamento de Ciência dos Materiais Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa

Cancer theranostics is a recent concept that aims to combine in the same device diagnostic and therapeutic features. Magnetic nanoparticles(m NPs) are commonly used as a critical part of these systems due to their ability to respond to an external magnetic field. Consequently, m NPs can generate heat when an alternating magnetic field is applied and enhance image contrast in magnetic resonance. However, direct administration of m NPs intravenously or directly in the tumor can lead to undesired side effects because of m NP elimination by macrophages or leakage to healthy tissues. Therefore, m NPs can be retained in a polymeric nanofibrous mesh, thus preventing misplacing or loss of m NPs. Furthermore, these magnetic nanofibers can be directly implanted in the tumor site, thus ensuring high m NPs loading and higher magnetic response. in addition, polymeric nanofibers produced by electrospinning are frequently used to maintain a sustained drug release in the tumor site. Therefore,a magnetic polymeric nanofiber produced by electrospinning is an ideal nanosystem for cancer theranostics application. This review summarizes the most recent developments of magnetic nanofibers produced by electrospinning for cancer theranostics applications.

关键词： Electrospinning Nanofibers iron oxide nanoparticles Magnetic fluid hyperthermia Cancer theranostics

Novel Approach to Minimize the Memory Requirements of Frequent Subgraph Mining Techniques

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Chinese Journal of Electronics 2021年第2期30卷 258-267页

作者： B?LG?N Turgay Tugay o?UZ Murat Department of Computer Engineering Bursa Technical University Microsoft Corporation Turkey Branch

Frequent subgraph mining(FSM) is a subset of the graph mining domain that is extensively used for graph classification and clustering. over the past decade, many efficient FSM algorithms have been developed with improvements generally focused on reducing the time complexity by changing the algorithm structure or using parallel programming techniques. FSM algorithms also require high memory consumption, which is another problem that should be solved. in this paper, we propose a new approach called Predictive dynamic sized structure packing(PDSSP) to minimize the memory needs of FSM algorithms. our approach redesigns the internal data structures of FSM algorithms without making algorithmic modifications. PDSSP offers two contributions. The first is the Dynamic Sized integer Type, a newly designed unsigned integer data type, and the second is a data structure packing technique to change the behavior of the compiler. We examined the effectiveness and efficiency of the PDSSP approach by experimentally embedding it into two state-of-the-art algorithms, g Span and *** compared our implementations to the performance of the originals. Nearly all results show that our proposed implementation consumes less memory at each support level, suggesting that PDSSP extensions could save memory, with peak memory usage decreasing up to 38% depending on the dataset.

关键词： data structures algorithmic modifications high memory consumption graph mining domain Dynamic Sized integer Type Predictive dynamic sized structure packing internal data structures graph classification parallel programming peak memory usage memory requirements PDSSP extensions finite state machines graph theory PDSSP approach algorithm structure newly designed unsigned integer data type data mining data structure packing technique efficient FSM algorithms clustering frequent subgraph mining techniques

Correction of dispersion distortion of femtosecond pulses by using the non-planar surface of diffractive optical elements

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Chinese optics Letters 2004年第8期2卷 435-437页

作者： i.V.Minin o.V.Minin Novosibirsk State Technical University Novosibirsk RussiaNovosibirsk State Technical University Novosibirsk Russia

Peculiarities of propagation of femtosecond pulses through a focusing diffractive optical element (DoE) are considered. it is shown that the time delay between the pulse and phase wavefronts can be decreased by fabric... 详细信息

关键词： Correction of dispersion distortion of femtosecond pulses by using the non-planar surface of diffractive optical elements DoE