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The Structure of Cool Flame Fronts of Pentane, Iso-Pentane and Their Mixture

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Journal of Thermal Science 2000年第4期9卷 365-370页

作者： z.A.Mansurov ch.K.Westbrook 等 Al－FarabiKaz.khStateNationalUniversity KarasaiBatryStr.95Akmaty480012kazakhstan UniversityofCaliforniaLawrenceLivermoreNationalLaboratory

An experimental study of the combustion of two isomers of n-pentane and iso-pentane in laminar cool flames has been carried out. Three flames were studied, one with n-pentane, the second with iso-pentane, and the third with an equimolar mixture of the two isomers. Particular attention has been given to the low temperature region ahead of the hot region of the flame and the cool flame ch.mistry occurring there. A unique experimental facility has been used to provide access to this cool flame region. Comparisons are made of the structures of the three flames, with particular attention on the different intermediate species produced and the correlations between the fuel molecule structure and the specific intermediates produced.

关键词： hydrocarbon cool names concentration profile.

A statistical model to predict total column oz.ne in Peninsular Malaysia

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Frontiers of Earth Science 2016年第1期10卷 63-73页

作者： K. C. TAN H. S. LIM M. z. MAT JAFRI Sch.ol of Physics Universiti Sains Malaysia Penang 11800 Malaysia

This study aims to predict monthly columnar oz.ne in Peninsular Malaysia based on concentrations of several atmospheric gases. Data pertaining to five atmo- spheric gases （CO2, 03, ch., NO2, and H2O vapor） were retrieved by satellite scanning imaging absorption spectro- metry for atmospheric ch.rtography from 2003 to 2008 and used to develop a model to predict columnar oz.ne in Peninsular Malaysia. Analyses of the northeast monsoon （NEM） and the southwest monsoon （SWM） seasons were conducted separately. Based on the Pearson correlation matrices, columnar oz.ne was negatively correlated with Hz. vapor but positively correlated with COz.and NO2 during both the NEM and SWM seasons from 2003 to 2008. This result was expected because NO/is a precursor of oz.ne. Therefore, an increase in columnar oz.ne concentration is associated with an increase in NO2 but a decrease in H/O vapor. In the NEM season, columnar oz.ne was negatively correlated with H20 （-0.847）, NO2 （0.754）, and CO2 （0.477）; columnar oz.ne was also negatively but weakly correlated with ch. （-0.035）. In the SWM season, columnar oz.ne was highly positively correlated with NO2 （0.855）, CO2 （0.572）, and ch.（0.321） and also highly negatively correlated with H2O（-0.832）. Both multiple regression and principal component analyses were used to predict the columnar oz.ne value in Peninsular Malaysia. We obtained the best-fitting regression equations for the columnar oz.ne data using four independent variables. Our results show approxi- mately the same R value （≈0.83） for both the NEM and SWM seasons.

关键词： oz.ne SCIAMAch. principal componentanalysis Peninsular Malaysia

In vivo and in vitro study of resorbable magnesium wires for medical implants:Mg purity,surface quality,z. alloying and polymer coating

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Journal of Magnesium and Alloys 2024年第6期12卷 2472-2488页

作者： K.Tesar J.Luňácková M.Jex M.Žaloudková R.Vrbová M.Bartoš P.Klein L.Vištejnová J.Dušková E.Filová z.Such.rda M.Steinerová S.Habr K.Balík A.Singh Department of Materials Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueTrojanova 13Prague 12000Czech Republic Institute of Physics Czech Academy of SciencesNa Slovance 2Prague 18221Czech Republic Institute of Dental Medicine First Faculty of MedicineCharles University and General University Hospital in PragueKaterinská32Prague 12801Czech Republic Department of Physics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueBrehová7Prague 11519Czech Republic Department of Composites and Carbon Materials Institute of Rock Structure and MechanicsCzech Academy of SciencesV Holešovickách 41Prague 18209Czech Republic Institute of Anatomy First Faculty of MedicineCharles UniversityU Nemocnice 3Prague 12800Czech Republic Biomedical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 76Pilsen 32300Czech Republic Department of Pathological Physiology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Department of Histology and Embryology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Institute of Pathology First Faculty of MedicineCharles University and General University Hospital in PragueStudnickova 2Prague 12800Czech Republic Department of Biomaterials and Tissue Engineering Institute of PhysiologyCzech Academy of SciencesVidenska 1083Prague 14200Czech Republic Research.Center for Structural Materials National Institute for Materials Science1-2-1 SengenTsukuba 305-0047Japan

Magnesium is an excellent material in terms of biocompatibility and its corrosion products can serve as an active source for new bone ***,localiz.d corrosion and H_(2)generation limit the potential of Mg-based *** low-alloyed Mg-z. wires can strongly reduce problems with large H_(2)bubbles and improve the mech.nical properties considerably while maintaining excellent long-term *** pickling and a polymer coating can be effectively used to lower the rate of in vivo *** this work,microstructural,mech.nical,and in vitro ch.racteriz.tion of 250μm and 300μm extruded wires made from ultra-pure Mg,commercially pure Mg,Mg-0.15z.,Mg-0.4z. and Mg-1z. was ***,Mg-0.4z. wires together with a variant coated with a copolymer of L-lactide andε-caprolactone were tested in vivo on artificially damaged Wistar rat *** on the observed Mg-induced osteogenesis,polymer-coated Mg wires with a small addition of z. are a perspective material for bone-support applications,such.as cerclage and fixation wires.

关键词： Magnesium Resorbable Mg wire Mg-z. implant degradation Biocompatibility study z. grain boundary segregation

Leach.ng of blended copper slag in microwave oven

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Transactions of Nonferrous Metals Society of ch.na 2017年第6期27卷 1404-1410页

作者： M.Deniz.TURAN z.Abidin SARI Jan D.MILLER Department of Metallurgical and Materials Engineering University of Firat Department of Metallurgical Engineering University of Utah

Leach.ng of blended slag(BS)was investigated in a microwave oven using hydrogen peroxide and acetic *** BSwas a mixture of converter and flash furnace slag containing51%Fe2O3,3.8%CuO,and3.2%*** important variables thatinfluence the metal extraction yield were leach.ng time,liquid-solid ratio,H2O2and ch.COOH *** preferredleach.ng conditions were as follows:ch.COOH concentration4mol/L;H2O2concentration4mol/L;microwave power900W;leach.ng time30min;liquid-solid ratio25mL/g BS;leach.ng temperature100°*** these conditions,the metal extractions of95%Cu,1.6%Fe,and30%z. were *** results were compared with the traditional leach.ng *** is evident thatmicrowave heating causes a reduction in the leach.ng ***,the extraction yield results indicate that selective leach.ng of BS canbe ach.eved under the preferred *** dissolution kinetic of BS in hydrogen peroxide with acetic acid is controlled by ashrinking unreacted core model *** apparent activation energy and reaction order were found to be16.64kJ/mol and1.09,respectively.

关键词： slag copper microwave selective leach.ng

Prevalence of Diabetes and Hypertension on World Diabetes Day 2022 in Guinea

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Open Journal of Endocrine and Metabolic Diseases 2024年第1期14卷 1-6页

作者： Mamadou Dian Mamoudou Diallo Mamadou Mansour Diallo Mamadou ch.rif Diallo Mamadou Alpha Diallo Alpha Mamadou Diallo Mody Abdoulaye Barry Kadija Dieng Abdoul Maz.d Diallo El’Hadj z.inoul Bah Kadidiatou Bah Amatoulaye Diallo Amadou Kaké Naby Moussa Baldé Oumou Baldé Unité de Diabétologie H&#244pital régional de Labé Labe Guinea Université de Conakry Conakry Guinea Service de Diabétologie CHU Donka Conakry Guinea Fondation de Lutte Contre le diabète et MNT Conakry Guinea

Introduction: Diabetes mellitus and hypertension are ch.onic diseases that are on the rise and pose a major public health problem among the priorities of healthcare systems. Objectives: Determine the prevalence of diabetes and hypertension and describe the sociodemographic ch.racteristics of those screened. Materials and Methods: This was a cross-sectional study organiz.d during a diabetes and hypertension screening campaign that took place in Conakry and five (05) inland regions on November 14, 2022. Results: 2050 people were screened, of whom 33.12% were housewives, the average age was 44.78 ± 16.23 years, and 55.27% were women. The screening sites were the city of Conakry 741 (36.15%), the Labé region 424 (20.68%), the N’z.rékoré region 298 (14.54%), the Faranah region 241 (11.75%), the Mamou region 210 (10.24%) and the Boké region 136 (6.63%). The prevalence of diabetes and hypertension were respectively 12.5% and 43.38% for the Boké region;6.19% and 16.19% for the Mamou region;3.02% and 21.81% for the N’z.rékoré region;31.95% and 13.69% for the Faranah region;9.67% and 20.28% for the Labé region;2.83% and 20.28% for the city of Conakry. Conclusion: Despite the limitations of the study duration, our series highlighted the high prevalence of diabetes and hypertension among people screened on World Diabetes Day 2022. Raising public awareness of a healthy lifestyle is essential for the prevention and control of diabetes and hypertension.

关键词： Prevalence Diabetes Hypertension

Study of the Adsorption Efficiency of an Eco-Friendly Carbohydrate Polymer for Contaminated Aqueous Solution by Organophosphorus Pesticide

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Open Journal of Organic Polymer Materials 2014年第1期4卷 16-28页

作者： z. Abdeen Somaia G. Mohammad Pesticide Residues and Environmental Pollution Department Central Agricultural Pesticides Laboratory Agriculture Research Center Dokki Giza Egypt Petroch.mical Department Egyptian Petroleum Research Institute Nasr City Cairo Egypt

The removal of pesticide (ethoprophos) from aqueous solution using a natural biosorbent such.as ch.tosan (ch. prepared from a biopolymer waste obtained from marine industry was studied. The Fourier Transform Infrared Spectroscopy (FTIR), Scanning electron microscopy (SEM), and X-ray diffraction spectroscopy (XRD) were used to study the structure of the adsorbent. The biosorption studies were carried out under various parameters, such.as biosorbent dose, initial pesticide concentration and contact time. The experimental results show that the removal percentage of ethoprophos increased from 85.693% to 89.234%, as adsorbent dose (ch. increased from 0.02 to 0.1 g/100ml. The equilibrium uptake was increased with an increase in the initial pesticide concentration in solution. Biosorption kinetic data were fitted well with the pseudo-second order kinetic model. The experimental isotherms data were analyz.d using Freundlich. Langmuir, Temkin and Dubinin-Radushkevich.(D-R) isotherm equations. The best fit was obtained by Freundlich.isotherm with high correlation coefficients. That the value of energy calculated from the D-R isotherm was 5.56 KJ/mol suggests the adsorption of ethoprophos on ch.tosan is physical. All the results indicating ch.was ch.sen as low-cost biosorbent could be applied for the removal of organophosphorous pesticide from aqueous solutions.

关键词： ch.tosan Adsorption Organophosphorous Pesticide Contaminated

Numerical performance assessment of double-shell targets for z.pinch.dynamic hohlraum

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Matter and Radiation at Extremes 2022年第3期7卷 10-19页

作者： Y.Y.ch. z.Wang J.M.Qi z.P.Xu z.H.Li Institute of Nuclear Physics and ch.mistry China Academy of Engineering PhysicsMianyang 621900China

A z.pinch.dynamic hohlraum can create the high-temperature radiation field required by indirect-drive inertial confinement fusion.A dynamic hohlraum with peak radiation temperature over 300 eV can be obtained with a>50 MA z.pinch.driver according to the scaling law of dynamic hohlraum radiation temperature vs drive *** on a uniform 300 eV radiation temperature profile with a width of 10 ns,three double-shell capsules with radii of 2,2.5,and 3 mm are proposed,and the corresponding fusion yields from a one-dimensional calculation are 28.8,56.1,and 101.6 *** implosion dynamics of the 2.5 mm-radius capsule is investigated in *** ignition,the areal density of the fuel is about 0.53 g/cm^(2),the fuel pressure is about 80 Gbar,and the central ion temperature is about 4.5 keV,according to the one-dimensional simulation.A two-dimensional simulation indicates that the double-shell capsule can implode nearly spherically when driven by the radiation field of a z.pinch.dynamic *** sensitivities of the fusion performance to the radiation temperature profiles and to deviations in the capsule parameter are investigated through one-dimensional simulation,and it is found that the capsule fusion yields are rather stable in a quite large parameter space.A one-dimensional simulation of a capsule embedded in 50 mg/cm^(3)ch.foam indicates that the capsule performance does not ch.nge greatly in the mimicked environment of a z.pinch.dynamic *** double-shell capsules designed here are also applicable to laser indirect-drive inertial fusion,if a laser facility can produce a uniform 300 eV radiation field and sustain it for about 10 ns.

关键词： dynamic double performance

Bio-Oil Extracted of Wet Biomass of the Microalga <i>Monoraphidium</i>sp. for Production of Renewable Hydrocarbons

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Journal of Power and Energy Engineering 2019年第1期7卷 80-90页

作者： Yordanka R. Cruz.Gisel ch. Díaz.Viviane de S. Borges Andreina z. F. Leonett René G. Carliz.Vinicius Rossa Vitor M. E. S. Silva Carolina Vieira Viegas Donato A. G. Aranda Luciano B. Oliveira GREETEC Laboratory Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Brazil GCAT Laboratory Federal University of Uberladia (UFU) Rio de Janeiro Brazil Research.Company Energetic (EPE) Rio de Janeiro Brazil

Renewable hydrocarbons refer to fuels consisting of hydrocarbons of 10 to 20 carbon atoms, produced from biomass, and free of oxygen. Hydrocracking, hydrodeoxygenation and hydrotreatment processes for the production of renewable hydrocarbons are described in the literature. Microalgae have been targeted in recent years to synthesiz. biomass that can be used in the production of biofuels, such.as renewable hydrocarbons, biodiesel or ethanol second generation. In this context the lineage Monoraphidium sp. was selected from previous ecophysiological studies and its potential to produce lipids to develop this research.related with the extraction of the bio-oil of the wet biomass of Monoraphidium sp. through heat treatment. Consecutively the bio-oil was used as raw material for the production of hydrocarbons through hydrocracking and hydrodeoxygenation processes (HDO) as: decarbonylation, decarboxylation, dehydratation, with in situ production of hydrogen from liquid-phase reforming of glycerol. The reactions were carried out under two different temperature conditions, 350°C and 300°C, respectively, for 1 h and using ruthenium alumina catalyst (Ru/Al2O3). The results showed the bio-oil processing route at a temperature of 350°C promising for the production of hydrocarbons ach.eving a conversion of 81.54%.

关键词： Renewable Hydrocarbons Hydrotreatment Bio-Oil Monoraphidium sp.

Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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ch.nese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Ach.sov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batoz.kaya K.Begz.uren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianch. E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.ch.ng W.L.ch.ng G.R.ch. G.ch.lkov C.ch.n C.H.ch.n ch.o ch.n G.ch.n H.S.ch.n M.L.ch.n S.J.ch.n S.L.ch.n S.M.ch.n T.ch.n X.R.ch.n X.T.ch.n Y.B.ch.n Y.Q.ch.n z.J.ch.n z.Y.ch.n S.K.ch.i X.ch. G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich.C.Q.Deng z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng K.Fisch.r M.Fritsch.C.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garz.a P.T.Ge z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetz.n L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez.K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz.Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.R.Hou z.L.Hou B.Y.Hu H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.H\"olz.en N.H\"usken N.in der Wiesch. M.Irshad J.Jackson S.Janch.v J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khach.tryan A.Khoukaz.R.Kiuch. O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavez.i T.T.Lei z.H.Lei H.Leithoff M.Lellmann T.Lenz.C.Li C.Li C.H.Li ch.ng Li D.M.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Boch.m Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central ch.na Normal University Wuhan 430079China Central South University Changsha 410083China ch.na Center of Advanced Science and Tech.ology Beijing 100190China ch.na University of Geosciences Wuhan 430074China ch.ng-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtz.entre for Heavy Ion Research.GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangz.ou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz.Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and Tech.ology Luoyang 471003China Henan University of Tech.ology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Tech.ology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Naz.onali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Naz.onali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Naz.onali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sez.one di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sez.one di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Tech.ology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branch.ng fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction