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Chinese Journal of Chemical Engineering 2018年第4期26卷 812-821页

作者： Hugo I.Velázquez-sánchez Ricardo Aguilar-López Center of Research and Advances studies of the National Polytechnic Institute (CINVEsTAV) Biotechnology and Bioengineering DepartmentAv. National Polytechnic Institute 2508 Col. San Pedro Zacatenco

Acetone–butanol–ethanol(ABE)fermentation process can be exploited for the generation of butanol as biofuel,however it does need to overcome its low volumetric solvent productivity before it can commercially compete with fossil fuel *** this regard,mathematical modelling and simulation analysis are tools that can serve as the base for process engineering development of biological *** this work,a novel phenomenological kinetic model of Clostridium acetobutylicum ATCC 824 was considered as a benchmark system to evaluate the behaviour of an ABE fermentation under different process configurations using both free and immobilized cells:single stage batch operation,fed-batch,single stage Continuous stirred Tank Reactor(CsTR)and multistage CsTRs with and without biomass *** proposed model achieved a linear correlation index r^2=0.9952 and r^2=0.9710 over experimental data for free and immobilized cells *** predicted maximum butanol concentration and productivity obtained were 13.08 g·L^(-1)and 1.9620 g·L^(-1)·h^(-1)respectively,which represents an increase of 1.01%and 990%versus the currently developed industrial scale process reported currently into the *** results provide a reliable platform for the design and optimization of the ABE fermentation system and showcase the adequate predictive nature of the proposed model.

关键词： Biofuels Butanol Clostridium acetobutylicum Mathematical modelling Process configurations

Predicting phosphorus sorption isotherm parameters in soil using data of routine laboratory tests

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Pedosphere 2021年第5期31卷 694-704页

作者： Kathleen s.DUNNE Nicholas M.HOLDEN Karen DALY Teagasc Johnstown CastleEnvironmental Research CentreCo.Wexford Y35TC97(Ireland) UCD school of Biosystems and Food Engineering University College DublinBelfieldDublin 4 D04VIW8(Ireland)

Knowledge of phosphorus(P)sorption dynamics across different soil types could direct agronomic and environmental management of *** objective of this study was to predict P isotherm parameters for a national soil population using data of routine laboratory *** and Freundlich sorption parameters were calculated from two different ranges(0-25 and 0-50 mg P L^(-1))using an archive of representative agricultural soil types from *** linear regression(MLR)identified labile forms of aluminium(Al)and iron(Fe),organic matter(OM),cation exchange capacity(CEC),and clay as significant *** and Freundlich sorption capacities,Freundlich affinity constant,and Langmuir buffer capacity were predicted reliably,with R^(2) of independent validation>*** isotherm parameters were predicted from P sorbed at a single concentration of 50 mg P L^(-1)(s_(50)).An MLR prediction of P sorption maximum in the 0-50 mg P L-1 range was achieved,to an accurate standard,using s_(50),OM,and Mehlich-3 Fe(R^(2) of independent calibration and validation being 0.91 and 0.95,respectively).Using Giles’four shapes of isotherms(C,L,H,and s),L non-strict-and C-shaped isotherm curves accounted for 64% and 27% of the soils,*** clustering identified a separation of isotherm curves influenced by two ranges of Mehlich-3 *** with a low range of Mehlich-3 Al(2.5-698 mg kg^(-1))had no incidence of rapid sorption(C shape).single point indices,Al,or available soil data make the regression approach a feasible way of predicting Langmuir parameters that could be included with standard agronomic soil P testing.

关键词： available phosphorus binding fertilizer soil test sorption maximum

Ground state parameters,electronic properties and elastic constants of CaMg3:DFT study

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Journal of Magnesium and Alloys 2020年第4期8卷 1166-1175页

作者： H.Rekab-Djabri Manal M.Abdus salam s.Daoud M.Drief Y.Guermit s.Louhibi-Fasla Laboratory of Micro and Nanophysics(LaMiN) National Polytechnic School OranENPO-MABP 1523El M'Naouer31000 OranAlgeria Faculty of Nature and Life sciences and Earth sciences Akli Mohand-Oulhadj University10000 BouiraAlgeria Department of Applied Physics Tafila Technical UniversityTafila 66110Jordan Laboratory of Materials and Electronic systems Mohamed El Bachir El Ibrahimi University of Bordj Bou ArreridjBordj BouArreridj 34000Algeria Laboratoire des Materiaux Magnetiques Departement de PhysiqueFaculte des SciencesUniversite Djilali LIABES de Sidi-Bel-AhbesSidi Bel Abbes 22000Algeria

The present study aims to investigate the equation of state(EOs)parameters of CaMg3 in aReCh(D09),AIFR(DO3),CU3A11(LI2)and CuTi3(L60)structures,using full potential linear muffin-tin orbitals(FP-LMTO)approach based on the density functional theory(DFT).The local density approximation(LDA)and the generalized gradient approximation(GGA)were both applied for the exchange-correlation potential *** calculated equation of slate parameters at equilibrium,in general,agreed well with the available data of the *** calculations showed that under compression CaMg3 transforms from DO3 to DO9 at about 29.96GPa,and 25.1 GPa using LDA and GGA,*** elastic constants C,y,aggregate moduli,Vickers hardness,sound velocity,and Debye temperature of CaMg3 in D03 structure were also reported,discussed and *** LDA(GGA),the calculated values of Hv andθD were found at around 5.80GPa(5.93GPa)and 393.44 K(389.91 K),*** band structure,total density of states(TDOs)as well as the partial density of states(PDOs)have been also *** electronic band structure confirms the metallic behavior of CaMg3 in DO3 phase,the valence bands are dominated by the maximum contribution of‘d’like states of Ca in the energy ranging from 2 to 3 eV for GGA,and from 4.5 to 5 eV for LDA,respectively.

关键词： CaMg3 compound Electronic properties Phase transition Elastic constants FP-LMTO

Prion protein in myelin maintenance: what does the goat say?

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Neural Regeneration Research 2021年第6期16卷 1216-1217页

作者： Fredrik s.skedsmo Arild Espenes Michael A.Tranulis Department of Preclinical sciences and Pathology Norwegian University of Life SciencesOsloNorway

The cellular prion protein PrPC has been extensively studied because it can adopt a pathogenic three-dimensional conformation that causes rare,but invariably fatal,neurodegenerative prion diseases in humans and other *** disease-causing conformer of the protein is called PrPsc,of which oligomeric aggregates constitute prion agents that can bind to,and convert further,PrPC molecules into PrPsc(Prusiner,1998).Thus,in the poorly understood process of prion propagation,there is transfer of biological information encoded solely by protein *** can spread within a tissue secondary to a spontaneous conversion of PrPC to PrPsc or upon transmission of prion agents between individuals.

关键词： Prion convert invar

Effectiveness of Darcy-Forchheimer and nonlinear mixed convection aspects in stratified Maxwell nanomaterial flow induced by convectively heated surface

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Applied Mathematics and Mechanics(English Edition) 2018年第10期39卷 1373-1384页

作者： T.HAYAT s.NAZ M.WAQAs A.ALsAEDI Department of Mathematics Quaid-i-Azam University Nonlinear Analysis and Applied Mathematics (NAAM) Research Group Department of Mathematics Faculty of Science King Abdulaziz University

The effect of nonlinear mixed convection in stretched flows of rate-type nonNewtonian materials is described. The formulation is based upon the Maxwell liquid which elaborates thermal relation time characteristics. Nanofluid properties are studied considering thermophoresis and Brownian movement. Thermal radiation, double stratification, convective conditions, and heat generation are incorporated in energy and nanoparticle concentration expressions. A boundary-layer concept is implemented for the simplification of mathematical expressions. The modeled nonlinear problems are computed with an optimal homotopy scheme. Moreover, the Nusselt and sherwood numbers as well as the velocity, nanoparticle concentration, and temperature are emphasized. The results show opposite impacts of the Deborah number and the porosity factor on the velocity distribution.

关键词： Maxwell nanomaterial nonlinear mixed convection thermal radiation double stratification convective condition

Materials databases for the computational materials scientist

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International Journal of Minerals,Metallurgy and Materials 2011年第3期18卷 303-308页

作者： Marcel H.F. sluiter Darko simonovic Emre s. Tasci Materials science and Engineering 3ME Delft University of Technology Materials innovation institute M2i Física de la Materia Condensada Universidad del Pais Vasco

Until recently, many computational materials scientists have shown little interest in materials databases. This is now changing be-cause the amount of computational data is rapidly increasing and the potential for data mining provides unique opportunities for discovery and optimization. Here, a few examples of such opportunities are discussed relating to structural analysis and classification, discovery of correlations between materials properties, and discovery of unsuspected compounds.

关键词： database systems materials data mining ab initio prediction structural analysis

A New Process for Titanium Aluminides Production from TiO_2

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Journal of Materials science & Technology 2007年第3期23卷 367-372页

作者： A.R.Kamali H.Razavizadeh s.M.M.Hadavi Department of Materials and Metallurgy Engineering IUsT University Department of Chemical and Materials Engineering Maleke Ashtar University

This paper describes a new process for producing titanium aluminides, in particular TiAl, from TiO2 raw material. On the basis of obtained results, the non-completed reaction of TiO2 with Al and Ca in a special reaction vessel results in the production of granulates of titanium aluminides especially Ti3Al and other Ti- Al phases as the metallic product and Ca12Al14O33 as the non-metallic product. By adding KClO4 in the mixture, a nearly completed reaction can be carried out. The products of this reaction are titanium aluminide particularly TiAl as the metallic part and CaAl4O7 （grossite） as the non-metallic slag part. Both product and slag are produced in a separated form. This process, called KRH-method is described in this article. The scanning electron microscopic microstructure of metallic part of the product shows different phases： the matrix phase is TiAI, where the needle form precipitation is TiAl2 and the plate form precipitation includes TiAI and Ti3Al phases. The microstructure of the remelted metallic part indicates dendritic phase with a lamellar structure comprising of TiAl and Ti3Al phases. The interdendritic phase of TiAI is also seen.

关键词： Titanium aluminide Titanium dioxide Grossite KRH process

Crosslinked hyaluronic acid with liposomes and crocin for management symptoms of dry eye disease caused by moderate meibomian gland dysfunction

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International Journal of Ophthalmology(English edition) 2020年第9期13卷 1368-1373页

作者： José-María sánchez-González Concepción De-Hita-Cantalejo María Carmen sánchez-González Department of Physics of Condensed Matter Optics AreaUniversity of SevilleSeville 41012Spain

AIM:To study the effect of uncrosslinked and crosslinked hyaluronic acid combined with other artificial tear components in patients with dry eye caused by moderate meibomian gland ***:Prospective,single-blind,contralateral eye *** eyes(25 patients)were *** selection for each tear type was random,and the eye drop formulations,0.4%uncrosslinked hyaluronic acid and 0.2%galactoxyloglucan(tear A)and 0.15%crosslinked hyaluronic acid,crocin,and liposomes(tear B)were *** determined dosing schedule was three times a day for six weeks,and the study participants underwent a clinical examination before and 45 d after lubricant *** schirmer test,tear breakup time(TBUT)test,and Ocular surface Disease Index(OsDI)questionnaire were applied before and after instillation period with both types of artificial ***:On the schirmer test,a significant improvement was obtained with both tear A(Pst,a significant improvement was obtained with tear A(PsDI score significantly decreased after instillation period with both artificial tear types(PsION:Uncrosslinked hyaluronic acid combined with other components,such as tamarind seed polysaccharide,and crosslinked hyaluronic acid combined with liposomes and crocin are effective for management symptoms of dry eye disease.

关键词： liposome crosslinked hyaluronic acid meibomian gland dysfunction contact lens dry eye disease

Operational guidance for aeration and flow augmentation for the Chicago Area Waterway system—A case study

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Water science and Engineering 2023年第4期16卷 345-358页

作者： Charles s.Melching Jennifer Wasik Ed staudacher Thomas Minarik Melching Water solutions LLC GreenfieldWI 53221USA Metropolitan Water Reclamation District of Greater Chicago ChicagoIL 60611USA Metropolitan Water Reclamation District of Greater Chicago CiceroIL 60804USA

The Chicago Area Waterway system(CAWs)is a 133.9 km branching network of navigable waterways controlled by hydraulic structures,in which the majority of the flow is treated wastewater effluent and there are periods of substantial combined sewer *** CAWs comprises a network of effluent dominated *** stringent dissolved oxygen(DO)standards and a reduced flow augmentation allowance have been recently applied to the ***,a carefully calibrated and verified one-dimensional flow and water quality model was applied to the CAWs to determine emission-based real-time control guidelines for the operation of flow augmentation and aeration *** goal of these guidelines was to attain DO standards at least 95%of the ***“optimal”guidelines were tested for representative normal,dry,and wet *** finally proposed guidelines were found in the simulations to attain the 95%target for nearly all locations in the CAWs for the three test *** developed operational guidelines have been applied since 2018 and have shown improved attainment of the DO standards throughout the CAWs while at the same time achieving similar energy use at the aeration stations on the Calumet River system,greatly lowered energy use on the Chicago River system,and greatly lowered discretionary diversion from Lake Michigan,meeting the recently enacted lower amount of allowed annual discretionary *** case study indicates that emission-based real-time control developed from a well calibrated model holds potential to help many receiving water bodies achieve high attainment of water quality standards.

关键词： Water quality modeling Water quality management Real-time control stream aeration Flow augmentation Dissolved oxygen

A magneto -thermo-elastic problem for a half-space without energy dissipation subjected to rotation and gravity field

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Journal of Ocean Engineering and science 2019年第1期4卷 55-63页

作者： A.M.Abd-Alla s.M.Abo-Dahab s.M.Ahmed M.M.Rashid Faculty of science Mathematics DepartmentSohag UniversityEgypt Faculty of science Mathematics DepartmentSouth Valley UniversityQena 83523Egypt Faculty of science Mathematics DepartmentTaif University888Saudi Arabia Faculty of science Mathematics DepartmentAl-Arish UniversityEgypt

The prime objective of the present paper is to analyze the effects of the rotation,magnetic field and gravity in a thermo-elastic half-space containing heat source on the boundary of the *** medium assumed under consideration is traction free,homogeneous,isotropic,as well as without energy *** normal mode analysis and eigenvalue approach technique are used to solve the resulting non-dimensional coupled *** comparisons for the physical quantities are established numerically and represented graphically in different cases with respect to the used effects.A comparative and remarkable study has been carried out through various graphs to deliberate the consequences of different parameter on the displacement components,stress components and temperature.

关键词： Green-Naghdi theory Thermo-elasticity Energy dissipation Rotation Magnetic field Gravity field.