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Hot Nuclear Matter Equation of State and Finite Temperature Kaon Condensation

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Chinese Physics Letters 2008年第12期25卷 4233-4236页

作者：李昂左维 Schulze H. j. Lombardo u. Department of Physics and Institute of Theoretical Physics and Astrophysics Xiamen University Xiamen 361005 Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 INFN-LNS Via Santa Sofia 44 I-95123 Catania and Department of Physics and Astrophysics Catania University. Via Santa Sotia 64 I-95123 Italy

We perform a systematic calculation of the equation of state of asymmetric nuclear matter at finite temperature within the framework of the Brueckner-Hartree-Fock approach with a microscopic three-body force. When applying it to the study of hot kaon condensed matter, we find that the thermal effect is more profound in comparison with normal matter, in particular around the threshold density. Also, the increase of temperature makes the equation of state slightly stiffer through suppression of kaon condensation.

关键词： field emission molybdenum dioxide enhancement factor

Evaluation of the diagnostic performance of a commercial molecular assay for the screening of suspected monkeypox cases in Sri Lanka

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Infectious Medicine

Infectious Medicine 2023年第2期2卷 136-142页

作者： H.B.C.Harshani g.A.Liyanage D.V.R.g.Ruwan u.K.I.u.Samaraweera j.I.Abeynayake Medical Research Institute Colombo 08Sri Lanka

Background:The main objective of the present study was to compare the diagnostic performance of the commercial LightMix Modular Monkeypox Virus(MPXV)qPCR(TIB Molbiol,germany)assay with the in-house non-variola orthopox/monkeypox generic real-time PCR assay(ICMR-NIV,Pune)for the screening of(MPXV)cases at Medical Research Institute(MRI)in Sri ***,clinical and sociodemographic data of suspected/confirmed cases received at MRI for the MPXV screening were also ***:The diagnostic performance of the commercial LightMix Modular MPXV qPCR assay with the in-house nonvariola orthopox/monkeypox generic real-time PCR assay for the screening of suspected MXPV cases was evaluated using standard methods with minor ***-demographic and clinical profiles of suspected and confirmed MPXV cases were also ***:The commercial LightMix Modular MPXV assay was able to detect MPXV with 100%sensitivity and specificity with non-variola orthopox/monkeypox generic rtPCR *** the period of study,from the total of 25 samples tested,only 2 were MPXV-positive(males).The most common symptoms of suspected MPXV cases were lesions or rashes(92%).Conclusions:With the continually increasing number of cases,access to MPXV testing should be made more widely *** commercial LightMix Modular MPXV(TIB Molbiol)qPCR assay offers comparable performance to the non-variola orthopox/monkeypox generic real time PCR assay for MPXV detection during the present outbreak.

关键词： Orthopoxvirus Monkeypox virus Real-time PCR assays Patient screening

Machine learning of superconducting critical temperature from Eliashberg theory

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npj Computational Materials 2022年第1期8卷 113-120页

作者： S.R.Xie Y.Quan A.C.Hire B.Deng j.M.DeStefano I.Salinas u.S.Shah L.Fanfarillo j.Lim j.Kim g.R.Stewart j.j.Hamlin P.j.Hirschfeld R.g.Hennig Department of Materials Science and Engineering University of FloridaGainesvilleFL32611USA Quantum Theory Project University of FloridaGainesvilleFL32611USA Department of Physics University of FloridaGainesvilleFL32611USA Scuola Internazionale Superiore di Studi Avanzati(SISSA) Via Bonomea 26534136TriesteItaly

The Eliashberg theory of superconductivity accounts for the fundamental physics of conventional superconductors,including the retardation of the interaction and the Coulomb pseudopotential,to predict the critical temperature T_(c).McMillan,Allen,and Dynes derived approximate closed-form expressions for the critical temperature within this theory,which depends on the electron–phonon spectral functionα^(2)F(ω).Here we show that modern machine-learning techniques can substantially improve these formulae,accounting for more general shapes of theα^(2)F *** symbolic regression and the SISSO framework,together with a database of artificially generatedα^(2)F functions and numerical solutions of the Eliashberg equations,we derive a formula for T_(c)that performs as well as Allen–Dynes for low-T_(c)superconductors and substantially better for higher-T_(c)*** corrects the systematic underestimation of Tc while reproducing the physical constraints originally outlined by Allen and *** equation should replace the Allen–Dynes formula for the prediction of higher-temperature superconductors.

关键词： function. critical theory

A review of methane leakage from abandoned oil and gas wells:A case study in Lubbock,Texas,within the Permian Basin

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Energy geoscience 2024年第3期5卷 1-12页

作者： Stanley u.Opara Chinedu j.Okere Bob L.Herd Department of Petroleum Engineering Texas Tech UniversityTXUSA

In the pursuit of global net zero carbon emissions and climate change mitigation,ongoing research into sustainable energy sources and emission control is *** review examines methane leakage from abandoned oil and gas(AOg)wells,focusing particularly on Lubbock,a geographic area situated within the larger region known as the Permian Basin in West Texas,united *** objective is to assess the extent and environmental implications of methane leakage from these *** analysis integrates pertinent literature,governmental and industry data,and prior Lubbock *** affecting methane leakage,including well integrity,geological characteristics,and human activities,are *** research estimates 1781 drilled wells in Lubbock,forming a foundation for targeted assessments and monitoring due to historical drilling *** hierarchy of well statuses in Lubbock highlights the prevalence of“active oil wells,”trailed by“plugged and abandoned oil wells”and“inactive oil wells.”Methane leakage potential aligns with these well types,underscoring the importance of strategic monitoring and *** analysis notes a zenith in“drilled and completed”wells during *** our study's case analysis and literature review reiterate the critical significance of assessing and mitigating methane emissions from AOg wells,it's important to clarify that the research does not directly provide methane leakage ***,it contextualizes the issue's magnitude and emphasizes the well type and status analysis's role in targeted mitigation *** summary,our research deepens our understanding of methane leakage,aiding informed decision-making and policy formulation for environmental *** clarifying well type implications and historical drilling patterns,we aim to contribute to effective strategies in mitigating methane emissions from AOg wells.

关键词： Net zero carbon emissions Climate change mitigation Methane emission control Abandoned oil and gas(AOg)well Permian Basin

Thermo-mechanical and micro-structural properties of xylanase containing whole wheat bread

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Food Science and Human Wellness 2016年第4期5卷 219-229页

作者： g.ghoshal u.S.Shivhare u.C.Banerjee Dr.S.S.Bhatnagar university Institute of Chemical Engineering and Technology Panjab UniversityChandigarh 160014India Department of Pharmaceutical Technology National Institute of Pharmaceutical Education and ResearchSAS Nagar 160062PunjabIndia

Xylanase is a hemicellulase that can hydrolyses the complex *** are main components of cell walls of cereal ***,hemicelluloses are considered as potential sources of mono-and *** this study,influence of xylanase on the physicochemical properties and sensory qualities of the whole wheat bread during storage was *** of whole wheat bread on microstructure,texture,thermotics,Scanning Electron Microscopic(SEM),X-Ray Diffraction(XRD)were conducted at ambient temperature of 25 and 4◦C *** storage at different temperatures,bread containing xylanase exhibited less firmness but larger volume with whiter crumb color and longer shelf life as compared to control *** of firmness,enthalpy,Fourier Transformation Infra Red(FTIR)and X-Ray Diffraction(XRD)studies suggested a lower staling rate of bread containing xylanase as compared to control *** containing xylanase showed a smoother surface and more uniform pore size than the *** differences in microstructure of control and bread containing xylanase were observed which might be attributed due to the change in water starch gluten *** differences were also found to be interrelated to the textural properties of *** sensory features were achieved in bread containing xylanase.

关键词： Bread Firmness Enzyme Texture Microstructure

The opportunity cost of androgen suppression in locally advanced prostate cancer

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Asian journal of Andrology 2013年第3期15卷 356-357页

作者： Phillip j.gray jason A Efstathiou William u Shipley Harvard Radiation Oncology Program Boston MA 02114 USA Department of Radiation Oncology Massachusetts General Hospital Boston MA 02114 USA

The use of androgen suppression ther- apy （AST） and radiotherapy for locallyadvanced prostate cancer has become the standard of care worldwide. At the same time, it has become clear that AST carries significant risk for side effects. Recently, Denham and colleagues have reported ini- tial quality of life （QoL） results from the TROg 03.04 RADAR trial. The authors identify clinically meaningful decrements in patient-reported QoL for those treated with 18 months of AST vs. 6 months but only marginal differences at 36 months. Once survival data becomes available, these data will help to frame any benefits seen for longer courses of AST.

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Nanoparticle type effects on flexural, interfacial and vibration properties of gFRE composites

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Chinese journal of Aeronautics 2016年第2期29卷 520-533页

作者： u.A.Khashaba Mechanical Engineering Department Faculty of Engineering King Abdulaziz University

Damping improvement in composite structures via introducing nanofillers generally has remarkable negative effects on the other mechanical properties. Therefore, in the present work, SiC and A1203 nanoparticles＇ infusion effects on the flexural, interracial and vibration properties of epoxy matrix and glass fiber reinforced epoxy （gFR/E） laminates were investigated. unidirectional （uD-gFR/E） and quasi-isotropic （QI-gFR/E） laminates with [0/± 45/90]s and [90/±45/0]s stack- ing sequences were hybridized by the optimum nanoparticles percentages. Results from off-axis flexural strengths of uD-gFR/E demonstrate good fiber/nanophased-matrix interracial bonding. The interlaminar shear stress between the adjacent layers with different orientations/strains of duc- tile QI-gFR/SiC/E laminates results in decreasing the flexural strengths respectively by 24.3% and 9.1% for [0/±45/90]s and [90/± 45/0]s stacking sequences and increasing the dissipated interfacial friction energy and thus the damping by 105.7% and 26.1%. The damping of QI-gFR/E, QI-gFR/SiC/E and QI-gFR/AI203/E laminates with [90/± 45/0]s stacking sequence was increased by 111.4%, 29.7% and 32.9% respectively compared to [0/± 45/90]s stacking sequence.

关键词： Flexural properties gFRE composites Interracial bonding Nanoparticles Non-destructive vibrationtechnique

Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation

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journal of Rock Mechanics and geotechnical Engineering 2020年第5期12卷 1056-1069页

作者： E.u.Eyo S.Ng’ambi S.j.Abbey School of Energy Construction and EnvironmentFaculty of EngineeringEnvironment and ComputingCoventry UniversityCoventryUK Faculty of Environment and Technology Department of Geography and Environmental ManagementCivil Engineering ClusterUniversity of the West of EnglandBristolUK

The mechanical performances and water retention characteristics of clays,stabilised by partial substitution of cement with by-products and inclusion of a nanotechnology-based additive called RoadCem(RC),are studied in this *** unconfined compression tests and one-dimensional oedometer swelling were performed after 7 d of curing to understand the influence of addition of 1%of RC material in the stabilised soils with the cement partially replaced by 49%,59%and 69%of ground granulated blast furnace slag(gBBS)or pulverised fuel ash(PFA).The moisture retention capacity of the stabilised clays was also explored using the soil-water retention curve(SWRC)from the measured *** confirmed an obvious effect of the use of RC with the obtained strength and swell properties of the stabilised clays suitable for road application at 50%replacement of *** outcome is associated with the in-depth and penetrating hydration of the cementitious materials by the RC and water which results in the production of needle-like matrix with interlocking filaments e a phenomenon referred to as the‘wrapping’*** the other hand,the SWRC used to describe the water holding capacity and corresponding swell mechanism of clays stabilised by a proportion of RC showed a satisfactory *** moisture retention of the RC-modified clays was initially higher but reduced subsequently as the saturation level increased with decreasing *** phenomenon confirmed that clays stabilised by including the RC are water-proof in nature,thus ensuring reduced porosity and suction even at reduced water ***,the stabilised clays with the combination of cement,ggBS and RC showed a better performance compared to those with the PFA included.

关键词： Cement ground granulated blast furnace slag(gBBS) Fly ash RoadCem(RC) Swell Stabilisation unconfined compressive strength Soil-water retention curve(SWRC)

Microstructural Evolution and Mechanical Behaviour of Metastable Cu-Zr-Co Alloys

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journal of Materials Science & Technology 2014年第6期30卷 584-589页

作者： S.Pauly K.Kosiba P.gargarella B.Escher K.K.Song g.Wang u.Kühn j.Eckert IFW Dresden Institut für Komplexe Materialien HelmholtzstraBe 20D-01069 Dresden Germany Laboratory for Microstructures Shanghai University Tu Dresden Institut für WerkstoffwissenschaftD-01062 Dresden Germany

Three different Cu-Zr-Co alloys, namely Cu40Zr37.5Co22.5, Cu42.5Zr45Co12.5 and Cu49Zr49Co2, were obtained by rapid cooling. The microstructure and phase formation of as-cast rods with diameters of 2 mm are compared with those of the respective ingots. An increasing Co content stabilises the B2 CuZr phase and leads to the precipitation of a ternary Cu-Zr-Co phase. The variation of the cooling rate affects the size of the B2 dendrites as well as the volume fraction and the morphology of the interdendritic phases. The mechanical properties were determined in compression and all alloys show a certain plastic deformability despite the presence of several binary and ternary intermetallic phases. The deformation mechanisms are discussed on the basis of the microstructures and the constituent phases.

关键词： Bulk metallic glasses Microstructural evolution Mechanical behaviour