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Enhancement of coercivity,permeability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for memory and high frequency devices

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Journal of rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.Sardar M.D.Hossain M.S.Sikder M.n.I.Khan M.r.rahman Physics Discipline Khulna UniversityKhulna9208Bangladesh Department of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Department ofComputer Science and Engineer.ng Northern University of Business&Technology KhulnaKhulna9100Bangladesh Material Science Division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic ferrites have huge applications in me mory and high frequency *** the improvement of these modern devices,the magnetic coercivity,permeability,and dielectric properties of a ferrite are the important *** article focuses on improving the magnetic coercivity,magnetic permeability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites,where x=0.00,0.06,and *** X-ray diffraction(XrD),Fourier tr.nsform infrared spectroscopy(FTIr),field emission scanning electr.n microscopy(FESEM),energy dispersive X-ray(EDX),vibrating sample magnetometer(VSM),and an impedance analyzer were used to characterize the structural,magnetic,and dielectric properties of the *** XrD patterns indicate the formation of spinel cubic structure of the samples with a secondary peak(EuFeO_(3))for Eu doped *** densities and porosities of the samples follow an inverse tr.nd,where the doped samples’lattice parameters are increased with the increment of rare earth Eu *** FTIr analysis also proves the spinel cubic phase of the *** average grain size of the ferrites is obtained via FESEM images,and it is increased from 121 to 198 *** analysis confirms that doping of the Eu content also changes other hysteresis loop properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped samples is greater than that of the mother alloy(x=0.00).The EDX study shows that there is no impurity contamination in the *** permeability and dielectric measurements show an improved quality factor of the Eu-doped samples with low magnetic and dielectric *** dependent resistivity and impedance analysis also show the improved *** the observed properties of the samples,all the investigated ferrites might be str.ng candidates for potential applications in memory devices,magnetic sensors,and high frequency applications.

关键词： Ferrites raree arths Coercivity Permeability EDX resistivity

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Cr-induced fusion reactions to synthesize superheavy elements

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nuclear Science and Techniques 2024年第5期35卷 122-130页

作者： S.Madhu H.C.Manjunatha n.Sowmya B.M.rajesh L.Seenappa r.S.Susheela Department of Physics R V College of EngineeringBangalore 560074India Visvesvaraya Technological University BelagaviKarnataka 590018India Department of Physics Government First Grade CollegeSrinivasapurKarnataka 563135India Department of Physics Government First Grade CollegeDevanahallyKarnataka 562110India Department of Physics Government First Grade CollegeMulbagalKarnataka 563131India Department of Physics Government First Grade collegeNanjangudOoty RoadMysore 571301India

We investigated ^(50,52-54)Cr-induced fusion reactions for the synthesis of the superheavy element in the 104≤Z≤122 *** cross sections produced in this investigation using ^(54)Cr projectiles were compared with those obtained in prior *** estimated cross sections from this analysis are consistent with the findings of prior *** the curr.nt study,the predicted cross section was found to be 42fb at 236 MeV for ^(53)Cr+^(243)Am,23.2 fb at 236 MeV for ^(54)Cr+^(247)Cm,95.6 fb at 240 MeV for ^(53)Cr+248Bk,and 1.33 fb at 242 MeV for ^(53)Cr+***,these projected cross sections with excitation energy and beam energy will be useful in future Cr-induced fusion reaction investigations.

关键词： Fusion cross sections Compound nucleus formation probability Survival probability Evaporation residue cross sections

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rare esophageal carcinoma-primary adenoid cystic carcinoma of the esophagus: A case report

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World Journal of Clinical Cases 2024年第3期12卷 630-636页

作者： Li-Dan Geng Jie Li Li Yuan Xiao-Bo du Department of Oncology Mianyang Central HospitalMianyang 621000Sichuan ProvinceChina

BACKGrOUnD Esophageal adenoid cystic carcinoma(EACC)is an exceedingly rare malignant tumor of the esophagus,posing significant challenges in the *** SUMMArY This report detailed the case of a 72-year-old male whose diagnosis of EACC was confirmed through postoperative histopathological *** patient underwent thoracoscopy-assisted radical resection of the esophageal tumor,coupled with lymph node *** findings revealed an adenoid cystic carcinoma infiltrating the entire layer of the muscularis propria,locally extending into the outer membr.ne of the esophageal fiber,involving the cardia and exhibiting no lymph node *** patient’s condition was classified as primary EACC,T3n0M0,per the American Joint Committee on Cancer(2017;8th edition).One month after surgery,the patient received postoperative adjuvant radiation *** In addressing the rarity and high potential for biopsy misdiagnosis of EACC,this study delved into its diagnostic methods and treatment.

关键词： Esophageal adenoid cystic carcinoma Malignant tumor Lymph node dissection Adjuvant radiation therapy Misdiagnosis Case report

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Habitat-specific changes of plant and soil microbial community composition in response to fairy r.ng fungus Agaricus xanthodermus on the Qinghai-Tibet Plateau

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Soil Ecology Letters 2024年第3期6卷 189-197页

作者： Juan du Cong He Fuxin Wang ning Ling Shengjing Jiang State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China College of Ecology Lanzhou UniversityLanzhou 730000China

Fairy r.ngs are common in diverse global biomes and often appear as lush vegetation in one to three concentric zones caused by the spread of mycelia in grassland ***,the underlying mechanisms and envir.nmental adaptation of fairy r.ngs remain largely *** this study,two fairy r.ngs(A and B)caused by Agaricus xanthodermus were sampled on the Qinghai-Tibet Plateau dur.ng a time when fairy r.ngs are most *** conducting a vegetation survey and high-throughput sequencing,the changes of plants and soil microorganisms to fairy r.ng fungi were *** above-ground biomass at both fairy r.ngs was greatly increased by fairy r.ng fungi,but the response of dominant plant species is differ.nt at two fairy r.ng *** addition,bacterial and fungal communities significantly varied within distinct sampling zones across the fairy r.ngs,and showed variable genus-specific responses at two fairy r.ng *** fairy r.ng A,soil available n:P ratio was essential in shaping the structure of plant and microbial community,while soil available n concentration was the most important predictor at fairy r.ng *** together,our results indicated Agaricus xanthodermus fairy r.ngs have variable effects on alpine meadow plants and soil microbes at differ.nt *** propose that the impacts of fairy r.ng fungi on plants and microbes are determined by the level of soil available n concentration and available n:P *** results contribute to a better understanding of the mechanisms through which fairy r.ngs affect the vegetation of alpine meadows.

关键词： Fairy r.ngs alpine meadow soil microbes plant-soil relationships

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First-pr.nciples calculations to investigate structural,electr.nic,magnetic,optical and thermodynamic properties of rE_(2)rh_(3)Ge(rE=Pr,Sm)

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Journal of rare Earths 2024年第7期42卷 1385-1393,I0007页

作者： A.Ezaier r.Masrour M.Hamedoun J.Kharbach A.rezzouk A.Hourmatallah n.Benzakour K.Bouslykhane Laboratory of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this paper,we analyzed the physical characteristics of the ternary alloys rE_(2)rh_(3)Ge(rE=Pr and Sm)using the first pr.nciples calculation based on functional density theory integrated in the Wien2k *** calculated formation energies of Pr_(2)rh_(3)Ge and Sm_(2)rh_(3)Ge are−5.3827 and−5.2782 eV/atom,respectively,showing that these alloys may exist *** results of the band structure and density of states indicate that all of the compounds tested are magnetic metals,and their magnetism is mostly related to the contribution of Pr and Sm *** total magnetic moments of Pr_(2)rh_(3)Ge and Sm_(2)rh_(3)Ge are 4.07245 and 11.16161μB/f.u,*** parameters such as heat capacity at constant pressure,entropy,Debye temperature,lattice volume,compressibility coefficients,and Gr.neisen parameter alloys were calculated using the Gibbs algorithm and studied in depth over a large temperature r.nge of 0-900 *** Debye temperature increases with increasing pressure and decreases with decreasing ***,the Debye temperatures calculated at p=0 GPa and T=300 K are equal to be 342 and 322 K for Pr_(2)rh_(3)Ge and Sm_(2)rh_(3)Ge,*** optical characteristics such as the real and imaginary portions of the dielectric function,the absorption coefficient,the energy-loss function,and the refractive index were investigated and discussed in more depth.

关键词： Magnetic metals Functional density theory Density of states Magnetic moment Optical and thermodynamic properties rare earths

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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 tr.nsitions and the contribution of the ^(3)P_(1) scatter.ng 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 interfer.ng ^(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 str.ng impact of the interfer.nce of ^(3)S_(1)(312)and ^(3)S_(1)(962)resonances in refer.nce to the CnO Gamow windows,especially at low *** estimate the contribution of cascade tr.nsitions to the reaction rate based on the exclusive experimental data from ***.C.85,065810(2012).The reaction rate enhancement due to the cascade tr.nsitions 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

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Advanced oxidation via the synergy of C-defective/C-O band modified ultrathin porous g-C_(3)n_(4)and PMS for efficient photothermal degradation of bisphenol pollutants and lignin derivatives

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Green Energy & Envir.nment 2024年第7期9卷 1159-1170页

作者： Liquan Jing Meng Xie Yuanguo Xu Chun Tong Xia du Heng Zhao na Zhong Huaming Li Jinguang Hu School of Chemistry and Chemical Engineer.ng Jiangsu UniversityZhenjiang212013China Department of Chemical and Petroleum Engineer.ng University of Calgary2500 University DriveNWCalgaryAlbertaT2N1N4Canada School of Pharmacy Jiangsu UniversityZhenjiang212013China School of Material Science&Chemical Engineer.ng Harbin University of Science and TechnologyHarbin150080China Institute for Energy research Jiangsu UniversityZhenjiang212013China

This work uses thermal polymerization of urea nitrate,oxyacetic acid and urea as the raw material to prepare ultra-thin porous carbon nitride with carbon defects and C-O band(OA-Un-Cn).Density functional theory(DFT)calculations showed OA-Un-Cn had narrower band gap,faster electr.n tr.nsport and a new internal construction electric ***,the prepared OA-Un-Cn significantly enhanced photocatalytic activation of peroxymonosulfate(PMS)due to enhanced light absorption performance and faster electr.n *** the result,the OA-Un-Cn/PMS could entirely degrade bisphenol A(BPA)within 30 min,where the photodegradation rate was 81.8 and 7.9 times higher than that of g-C_(3)n_(4)and OA-Un-Cn,***,the OA-Un-Cn/PMS could likewise degrade other bisphenol pollutants and sodium lignosulfonate *** suggested possible photocatalytic degradation pathways accordingly and explored the toxicity of its degradation *** work provides a new idea on the development of advanced photocatalytic oxidation processes for the treatment of bisphenol pollutants and lignin derivatives,via a metal-free photothermal-catalyst.

关键词： Photothermal-catalytic G-C_(3)n_(4) Peroxymonosulfate Bisphenol Sodium lignosulfonate

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Insights into effects of thermotoler.nt nitrifying and sulfur-oxidizing inoculants on nitrogen-sulfur co-metabolism in sewage sludge composting

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Journal of Envir.nmental Sciences 2024年第10期144卷 76-86页

作者： Tingting Hou Yujie Zhou r.ngchun du Jiali Liu Weiguang Li Shumei Zhang Muzi Li Junhong Chu Liqiang Meng Institute of Microbiology Heilongjiang Academy of SciencesHarbin 150010China Hebei University of Envir.nmental Engineer.ng Hebei Key Laboratory of Agroecological SafetyQinhuangdao 066102China School of Envir.nment Harbin Institute of TechnologyHarbin 150090China

In this study,high temperature thermotoler.nt nitrifying bacteria(TnB)and high temperature thermotoler.nt sulfide oxidizing bacteria(TSOB)were obtained from compost samples and inoculated into sewage sludge(SS)*** effects of inoculation on physical and chemical parameters,ammonia and hydrogen sulfide release,nitrogen form and sulfur compound content change and physical-chemical properties dur.ng nitrogen and sulfur conversion were *** results showed that inoculation of TnB and TSOB increased the temperature,pH,OM degradation,C/n ratio and germination index(GI)of *** with the control treatment(CK),the addition of inoculants reduced the release of nH3 and H2S,and tr.nsformed them into nitrogen and sulfur compounds,the hydrolysis of polymeric ferrous sulfate was promoted,resulting in relatively high content of sulfite and *** the same time,the physical and chemical properties of SS have a str.ng correlation with nitrogen and sulfur compounds.

关键词： Sewage sludge Composting Inoculation Thermotoler.nt nitrifying bacteria Thermotoler.nt sulfurized oxidizing bacteria

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nano-frictional mechano-reinforcing porous nanowires scaffolds

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Friction 2024年第5期12卷 968-980页

作者： Licheng HUA Conghu HU Jingkang ZHAnG Jin LI Chenjie GU Bin HUAnG Guangyong LI Jianke du Wanlin GUO Smart Materials and Advanced Structures Laboratory School of Mechanical Engineering&MechanicsNingbo UniversityNingbo315211China Key Laboratory for Intelligent nano Materials and Devices of Ministry of Education Nanjing University of Aeronautics and AstronauticsNanjing210016China Key Laboratory of Impact and Safety Engineer.ng Ministry of EducationSchool of mechanical Engineering and MechanicsNingbo UniversityNingbo315211China Department of Microelectr.nics and Engineer.ng Ningbo UniversityNingbo315211China

Artificial biomaterials with dynamic mechano-responsive behaviors similar to those of biological tissues have been drawing great *** this study,we report a TiO_(2)-based nanowire(TiO_(2)nWs)scaffolds,which exhibit dynamic mechano-responsive behaviors varying with the number and amplitude of nano-deformation *** is found that the elastic and adhesive forces in the TiO_(2)nWs scaffolds can increase significantly after multiple cycles of *** nanofriction experiments show the triboelectric effect of increasing elastic and adhesive forces dur.ng the nano-deformation cycles of TiO_(2)nWs *** properties allow the TiO_(2)nW scaffolds to be designed and applied as intelligent artificial biomaterials to simulate biological tissues in the future.

关键词： TiO_(2)nWs scaffolds nano-deformation mechano-reinforcing triboelectric effect intelligent artificial biomaterials

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Highly efficient nitrogen fixation over S-scheme heterojunction photocatalysts with enhanced active hydrogen supply

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national Science review 2024年第5期11卷 315-325页

作者： Tong Bao Yamin Xi Chaoqi Zhang Peiyang du Yitong Xiang Jiaxin Li Ling Yuan Chengzhong Yu Chao Liu School of Chemistry and Molecular Engineer.ng East China Normal University Australian Institute for Bioengineer.ng and nanotechnology The University of Queensland

Photocatalytic n2fixation is a promising strategy for ammonia（nH3） synthesis;however,it suffers from relatively low ammonia yield due to the difficulty in the design of photocatalysts with both high charge tr.nsfer efficiency and desirable n2adsorption/activation ***,an S-scheme CoSx/ZnS heterojunction with dual active sites is designed as an efficient n2fixation *** CoSx/ZnS heterojunction exhibits a unique pocket-like nanostructure with small ZnS nanocrystals adhered on a single-hole CoSxhollow *** the heterojunction,the ele ctr.nic interaction between ZnS and CoSxcreates electr.n-deficient Zn sites with enhanced n2chemisorption and electr.n-sufficient Co sites with active hydrogen supply for.n2hydrogenation,cooperatively reducing the energy barrier for *** combination with the promoted photogenerated electr.n-hole separation of the S-scheme heterojunction and facilitated mass tr.nsfer by the pocket-like nanostructure,an excellent n2fixation performance with a high nH3yield of 1175.37 μmol g-1h-1is *** study provides new insights into the design of hetero junction photocatalysts for.n2fixation.

关键词： photocatalysis nitrogen fixation S-scheme heterojunction active hydrogen ammonia

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