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Radiative^(9)Be(n,γ0+1+2+3+4+5)^(10)Be reaction rate in the potential cluster model

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Chinese Physics C 2023年第8期47卷 81-94页

作者： s.B.Dubovichenko B.M.Yeleusheva n.A.Burkova A.s.Tkachenko Fesenkov Astrophysical Institute 050020 AlmatyKazakhstan Al-Farabi Kazakh national University 050040 AlmatyKazakhstan

Within the framework of the modified potential cluster model with forbidden states,the total cross-sections of radiative n^(9)Be capture to the ground and five low-lying excited states are calculated at energies from 10^(-2)eV up to 5 *** thermal cross-section σ_(th)=8.35mb is in good agreement with experimental *** considered five resonances at the excitation energies E_(x)from 7.371 MeV up to 10.570 MeV corresponding to the following states with J^(π)(E_(x),MeV):3^(-)(7.371),2^(+)(7.542),3^(+)(9.4),2^(+)(9.56),and 3^(-)(10.570).The partial and total ^(9)Be(n,γ0+1+2+3+4+5)^(10)Be reaction rates are calculated at temperatures from 0.001 to 10 T_(9).Contrary to the available data,we propose that the rise in the reaction rate near factor five at T_(9)>1 is mainly due to the first 3^(-)(E_(R)=0.559 MeV)*** foresee this contrast as arising from different model approaches.

关键词： n^(9)Be system total cross-sections thermonuclear capture rate cluster model nuclear astrophysics thermal and astrophysical energies.

Application of nanotechnology to dentistry:Impact of graphene nanocomposites on clinical air quality

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World Journal of Clinical Cases 2025年第8期13卷 1-7页

作者： Ruth Rodríguez Montaño Mario A Alarcón-sánchez Melissa Martínez nieto Juan J Varela Hernández sarah M LomelíMartínez Department of Health and Illness as an Individual and Collective Process University Center of TlajomulcoUniversity of GuadalajaraTlajomulco de Zuñiga 45641JaliscoMexico Institute of Research in Dentistry Department of Integral Dental ClinicsUniversity Center of Health SciencesUniversity of GuadalajaraGuadalajara 44340JaliscoMexico Department of Biomedical science Faculty of Chemical-Biological SciencesAutonomous University of GuerreroGuerrero 39090Mexico Instituto Odontológico del Pacífico sur Chilpancingo de los Bravo 39022Mexico Independent Researcher Tijuana 22116Baja CaliforniaMexico Department of Medical and Life sciences Centro Universitario de la CiénegaUniversidad de GuadalajaraOcotlan 47810JaliscoMexico Master of Public Health Department of Well-being and Sustainable DevelopmentCentro Universitario del NorteUniversidad de GuadalajaraOcotlan 46200JaliscoMexico

Concerns about air quality in dental clinics where aerosol generation during procedures poses significant health risks,have prompted investigations on advanced disinfection *** editorial describes the strengths and limitations of ventilation and aerosol control measures in dental offices,especially with respect to the use of graphene *** potential of graphene nanocomposites as an innovative solution to aerosol-associated health risks is examined in this review due to the unique properties of graphene(e.g.,high con-ductivity,mechanical strength,and antimicrobial activity).These properties have produced promising results in various fields,but the application of graphene in dentistry remains *** recent study by Ju et al which was published in World Journal of Clinical Cases evaluated the effectiveness of graphene-based air disinfection systems in dental *** study demonstrated that graphene-based disinfection techniques produced significant reductions in suspended particulate matter and bacterial colony counts,when co-mpared with traditional *** these positive results,challenges such as material saturation,frequency of filter replacement,and associated costs must be addressed before widespread adoption of graphene-based disinfection techniques in clinical ***,there is need for further research on material structure optimization,long-term safety evaluations,and broader clinical applications,in order to maximize their positive impact on public health.

关键词： Graphene nanocomposites Antibacterial activity Biomedical applications Air disinfection

Isomeric ratio of the ^(181)Ta(γ,3n)^(178m,g)Ta reaction products at energy Eγmax up to 95 MeV

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Chinese Physics C 2022年第1期46卷 102-109页

作者： O.s.Deiev I.s.Timchenko s.n.Olejnik V.A.Kushnir V.V.Mytrochenko s.A.Perezhogin national science Center"Kharkiv Institute of Physics and Technology" 1 Akademicheskaya St.61108 KharkivUkraine

The photoneutron reaction^(18)Ta(y,3m)(178m,g)Ta was investigated with the beam from the nsC KIPT electron linear accelerator *** measurements were performed using the residual y-activity *** bremsstrahlung flux-averaged cross sections((E_(γmax))>.(r(E_(γmax))>m.nd the isomerie ratio of the re-action products d(E_(γmax))were *** theoretical values of the averaged cross-sections and isomeric ratio were calculated using the partial cross-sections from the TALYs1.95 code for different level density models LD 1-6..The obtained experimental d(E_(γmax))agree with the data in the lterature,but differ from the theoretical values in ab-solute magnitude and the behavior of the energy dependence.A comparison of the determined averaged cross-sec-tions with the calculated cross sections showed the best agreement for the case of the LD 5 model.

关键词： bremsstrahlung flux-averaged cross-section isomeric ratio bremsstrahlung end-point energy of 35-95 MeV activation and off-line 7-ray spectrometric technique TALYs1.95 GEAnT4.9.2

Complementary roles of glial cells in generating region-specific neuroinflammatory responses and phagocytosis in Parkinson’s disease

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neural Regeneration Research 2025年第10期20卷 2917-2918页

作者： Leyre Ayerra Maria s.Aymerich Universidad de navarra Facultad de CienciasDepartamento de Bioquímica y GenéticaPamplonaSpain CIMA-Universidad de navarra PamplonaSpain IdisnA Instituto de Investigación Sanitaria de NavarraPamplonaSpain

neuroinflammation is associated with Parkinson’s disease:Reactive gliosis and neuroinflammation are hallmarks of Parkinson’s disease(PD),a multisystem neurodegenerative disorder characterized by a progressive loss of dopaminergic *** has long been considered a mere consequence of neuronal loss,but whether it promotes PD or is a key player in disease progression remains to be *** leukocyte antigen.

关键词： inflammation leukocyte generating

APPROXIMATIOn OF FUnCTIOns BY(n,p)OPERATOR

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Analysis in Theory and Applications 1994年第2期10卷 67-73页

作者： s.n.Dubey A.Kumar sanjay Gandhi sarvodaya science college India R. D. University India Principal Sanjay Gandhi Sarvodaya Science College Ranital Jabalpur 482002 (M. P.) India R. D. University Jabalpur

The present paper deals with finding of constant occurring in the order of approximation of the function of Lipα(O <α<1) class by using (n, p) operator. Obviously the factor 1/ (1 - α) becomes large when α is clos... 详细信息

The present paper deals with finding of constant occurring in the order of approximation of the function of Lipα(O ss by using (n, p) operator. Obviously the factor 1/ (1 - α) becomes large when α is close to 1. We have shown the role of this factor in the constant of approximation.

关键词：四声健宝气压

Astrophysical s-factor and reaction rate for 15n(p,γ)16O within the modified potential cluster model

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Chinese Physics C 2024年第4期48卷 130-145页

作者： s.B.Dubovichenko A.s.Tkachenko R.Ya.Kezerashvili n.A.Burkova B.M.Yeleusheva Fesenkov Astrophysical Institute 050020 AlmatyKazakhstan new York City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Graduate school and University Center City University of New York10016 New YorkUSA al-Farabi Kazakh national University 050040 AlmatyKazakhstan

We study radiative p^(15)n capture on the ground state of ^(16)O at stellar energies within the framework of a modified potential cluster model(MPCM)with forbidden states,including low-lying *** investigation of the ^(15)n(p,γ0)^(16)O reaction includes the consideration of ^(3)s_(1) resonances due to E1 transitions and the contribution of the ^(3)P_(1) scattering wave in the p+^(15)n channel due to the ^(3)P_(1)→^(3)P_(0)M1 *** calculated the astrophysical low-energy s-factor,and the extrapolated s(0)turned out to be within 34.7−40.4 keV·*** important role of the asymptotic constant(AC)for the ^(15)n(p,γ0)16O process with interfering ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances is elucidated.A comparison of our calculation for the s-factor with existing experimental and theoretical data is addressed,and a reasonable agreement is *** reaction rate is calculated and compared with the existing *** has negligible dependence on the variation of AC but shows a strong impact of the interference of ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances in reference to the CnO Gamow windows,especially at low *** estimate the contribution of cascade transitions to the reaction rate based on the exclusive experimental data from ***.C.85,065810(2012).The reaction rate enhancement due to the cascade transitions is observed from T_(9)>0.3 and reaches the maximum factor~1.3 at T_(9)=*** present the Gamow energy window and a comparison of rates for radiative proton capture reactions ^(12)n(p,γ)^(13)O,^(13)n(p,γ)^(14)O,^(14)n(p,γ)^(15)O,and ^(15)n(p,γ)^(16)O obtained in the framework of the MPCM and provide the temperature windows,prevalence,and significance of each process.

关键词： low and astrophysical energies p^(15)n system thermonuclear reaction rate potential cluster model CnO-cycle

The influence of Landau quantization on the propagation of solitary structures in collisional plasmas

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Communications in Theoretical Physics 2020年第8期72卷 148-153页

作者： s Hussain n Akhtar Theoretical Physics Division(TPD) PINSTECHPO NiloreIslamabad 44000Pakistan

In this work, we study damped ion acoustic solitary wave structures in magnetized dense plasmas. The collisional effects of ions with electrons and neutrals are considered. The trapping effects of electrons and Landau quantization are included in the plasma model under consideration. We assume that magnetic field is quantized such that the condition■ is satisfied. We have derived the damped Korteweg–de Vries(dKdV) equation by using small amplitude reductive perturbation technique. The time-dependent analytical and numerical solutions of the dKdV equation are presented. For numerical solutions we apply a two level finite difference scheme with the help of the Runge Kutta method. The effects of variations of different plasma parameters on the propagation characteristics of damped solitary structures in the presence of collisions are discussed.

关键词： soliton collisional plasmas finite difference method reductive perturbation method

nonlinear parametric interactions in ion-implanted semiconductor plasmas having strain-dependent dielectric constants

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Chinese Physics B 2017年第1期26卷 304-309页

作者： n Yadav s Ghosh P s Malviya school of studies in Physics Vikram University Ujjain 465010 India Department of Physics Govt. J.N.S. Post Graduate College Shujalpur 465333 India

We report nonlinear parametric interactions using a hydrodynamic model of ion-implanted semiconductor plasmas having strain-dependent dielectric constants（sDDC）. High-dielectric-constant materials are technologically important because of their nonlinear properties. We find that the third-order susceptibility varies in the range 10^-14--10^-12m^2·V^-2 for ion-implanted semiconductor plasmas, which is in good agreement with previous results. It is found that the presence of sDDC in ion-implanted semiconductor plasma modifies the characteristic properties of the material.

关键词： nonlinear parametric interactions ion-implanted semiconductor plasmas strain-dependent dielectric constant

n-doped mesoporous alumina for adsorption of carbon dioxide

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Journal of Environmental sciences 2012年第11期24卷 1979-1984页

作者： Jayshri A.Thote Ravikrishna V.Chatti Kartik s.Iyer Vivek Kumar Arti n.Valechha nitin K.Labhsetwar Rajesh B.Biniwale M.K.n.Yenkie sadhana s.Rayalu Environmental Materials Division National Environmental Engineering Research Institute (NEERI-CSIR)Nagpur 440020India. Lakshminarayan Institute of Technology Nagpur 440001India

n-doped mesoporous alumina has been synthesized using chitosan as the biopolymer template. The adsorbent has been thoroughly investigated for the adsorption of CO2 from a simulated flue gas stream （15% CO2 balanced with n2） and compared with commercially available mesoporous alumina procured from sAsOL, Germany. CO2 adsorption was studied under different conditions of pre- treatment and adsorption temperature, inlet CO2 concentration and in the presence of oxygen and moisture. The adsorption capacity was determined to be 29.4 nag CO2/g of adsorbent at 55℃. This value was observed to be 4 times higher in comparison to that of commercial mesoporous alumina at a temperature of 55℃. Basicity of alumina surface coupled with the presence of nitrogen in template in synthesized sample is responsible for this enhanced CO2 adsorption. Adsorption capacity for CO2 was retained in the presence of oxygen; however moisture had a deteriorating effect on the adsorption capacity reducing it to nearly half the value.

关键词： mesoporous alumina chitosan carbon dioxide adsorption flue gas