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Dynamic response of honeycomb-FgS shells subjected to the dynamic loading using non-polynomial higher-order IgA

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Defence Technology（防务技术） 2024年第7期37卷 149-161页

作者： Pham Binh le Trung-Thanh Tran Faculty of Mechanical Engineering Le Quy Don Technical UniversityHanoiViet Nam

The main goal of this study is to use higher-order isogeometr.c analysis(IgA)to study the dynamic response of sandwich shells with an auxetic honeycomb core and two different functionally graded materials(FgM)skin layers(namely honeycomb-FgS shells)subjected to dynamic ***'s non-polynomial higher-order shear deformation theory(HSDT)is used due to its simplicity and *** governing equation is derived from Hamilton's *** verifying the present approach,the effect of input parameters on the dynamic response of honeycomb-FgS shells is carried out in detail.

关键词： IgA Elastic foundation Dynamic response FgM Auxetic honeycomb Shell

Biomass gasification,catalytic technologies and energy integration for production of circular methanol:new horizons for industry decarbonisation

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Journal of Environmental Sciences 2024年第6期140卷 306-318页

作者： Luis F.Bobadilla Lola Azancot Miriam g.nzález-castañ Estela ruíz-López Laura Pastor-Pérez Francisco J.Durán-olivencia runping Ye Katie chong Paula HBlanco-Sánchez Zenthao Wu Tomás r.reina JoséA.odriozola Departamento de Química Inorgánica e Instituto de ciencia de Materiales de Sevilla Centro Mixto CSIC-Universidad de SevillaAvda.Américo Vespucio 49Sevilla 41092Spain Departamento de Ingeniería Universidad Loyola AndalucíaAvda.de Las Universidades s/nSevilla 41704Spain Key Laboratory of Jiangxi Province for Environment and Energy catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Energy and Bioproducts research Institute(EBrI) Aston UniversityBirminghamB47ETUnited Kingdom Department of chemical and Pr.cess Engineering University of SurreyGuildfordGU27XHUnited Kingdom

The Intergovernmental Panel on climate change(IPcc)r.cognises the pivotal role of renewable energies in the future energy system and the achievement of the zero-emission *** implementation of renewables should provide major opportunities and enable a more secure and decentralised energy supply *** fuels provide long-term solutions for the transport sector,particularly for applications where fuels with high energy density are *** addition,it helps reducing the carbon footprint of these sectors in the *** on biomass char.cteristics feedstock is essential for scaling-up gasification from the laboratory to *** review deals with the transformation biogenic residues into a valuable bioenergy carrier like biomethanol as the liquid sunshine based on the combination of modified mature technologies such as gasification with other innovative solutions such as membranes and micr.channel *** abatement is a critical pr.cess in product gas upgrading since tars compromise downstream pr.cesses and equipment,for this,membrane technology for upgrading syngas quality is discussed in this *** reactor technology with the design of state-of-the-art multifunctional catalysts provides a path to develop decentralised biomethanol synthesis from biogenic ***,the development of a pr.cess chain for the production of(i)methanol as an intermediate energy carrier,(ii)electr.city and(iii)heat for decentralised applications based on biomass feedstock flexible gasification,gas upgrading and methanol synthesis is analysed.

关键词： Biogenic residues gasification Biomethanol circular Economy Microreactors

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 current 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

optimal Design of Hybrid Microgrid in Isolated communities of Ecuador

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Journal of Modern Power Systems and clean Energy 2024年第2期12卷 488-499页

作者： Luis A.Pesantes ruben Hidalgo-león Johnny rengifo Miguel Torres Jorge Aragundi Josécordova-garcia Luis F.Ugarte Facultad de Ingeniería en Electr.cidad y computación of Escuela Superior Politécnica del Litoral(ESPoL)University GuayaquilEcuador Department of Electr.cal Engineering at Universidad Técnica Feder.co Santa María SantiagoChile IEEE

In rural territories, the communities use energy sources based on fossil fuels to supply themselves with electr.city, which may address two main problems: greenhouse gas emissions and high fuel pr.ces. Hence, there is an opportunity to include renewable resources in the energy mix. This paper develops an optimization model to determine the optimal sizing, the total annual investment cost in renewable generation, and other operating costs of the components of a hybrid microgrid. By running a k-means clustering algorithm on a meteorological dataset of the community under study, the hourly representative values become input parameters in the proposed optimization model. The method for the optimal design of hybrid microgrid is analyzed in six operating scenarios considering:(1) 24-hour.continuous power supply;(2) load shedding percentage;(3) diesel power generator(genset) curtailment;(4) the worst meteorological conditions;(5) the use of renewable energy sources including battery energy storage systems(BESSs);and(6) the use of genset. A mathematical programming language(AMPL) tool is used to find solutions of the proposed optimization model. results show that the total costs of microgrid in the scenarios that cover 100% of the load demand(without considering the scenario with 100% renewables) increase by over 16% compared with the scenario with genset operation limitation. For the designs with power supply restr.ctions, the total cost of microgrid in the scenario with load shedding is reduced by over 27% compared with that without load shedding.

关键词： Battery energy storage system(BESS) isolated community microgrid renewable energy optimization

A facile strategy for tuning the density of surface-grafted biomolecules for melt extrusion-based additive manufacturing applications

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Bio-Design and Manufacturing 2024年第3期7卷 277-291页

作者： I.A.o.Beeren g.Dos Santos P.J.Dijkstra c.Mota J.Bauer H.Ferreira rui L.reis n.neves S.camarero-Espinosa M.B.Baker L.Moroni Department of complex Tissue regeneration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s research group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal IcVS/3B’s-PT government Associate Laboratory 4806-909 Braga/GuimarãesPortugal PoLYMAT University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKErBASQUE Basque Foundation for Science48009 BilbaoSpain

Melt extrusion-based additive manufacturing(ME-AM)is a promising technique to fabr.cate porous scaffolds for tissue engi-neering ***,most synthetic semicrystalline polymers do not possess the intrinsic biological activity required to control cell *** of biomolecules on polymer.c surfaces of AM scaffolds enhances the bioactivity of a constr.ct;however,there are limited strategies available to control the surface ***,we report a strategy to tune the surface density of bioactive groups by blending a low molecular weight poly(ε-caprolactone)5k(PcL5k)containing orthogonally reactive azide groups with an unfunctionalized high molecular weight PcL75k at different *** porous three-dimensional(3D)scaf-folds were then fabr.cated using a high weight percentage(75 wt.%)of the low molecular weight PcL *** a proof-of-concept test,we prepared films of three different mass ratios of low and high molecular weight polymers with a thermopress and reacted with an alkynated fluorescent model compound on the surface,yielding a density of 201-561 pmol/cm^(2).Subsequently,a bone morphogenetic protein 2(BMP-2)-derived peptide was grafted onto the films comprising different blend compositions,and the effect of peptide surface density on the osteogenic differentiation of human mesenchymal stromal cells(hMScs)was *** two weeks of culturing in a basic medium,cells expressed higher levels of BMP r.ceptor II(BMPrII)on films with the conjugated *** addition,we found that alkaline phosphatase activity was only significantly enhanced on films contain-ing the highest peptide density(i.e.,561 pmol/cm^(2)),indicating the importance of the surface *** together,these results emphasize that the density of surface peptides on cell differentiation must be considered at the cell-material ***,we have presented a viable strategy for ME-AM community that desires to tune the bulk and surface functionality via blending of(m

关键词： Additive manufacturing Blending Surface functionalization Surface density click chemistry Human

Postbiotics from Saccharomyces cerevisiae fermentation stabilize microbiota in rumen liquid digesta during grain-based subacute ruminal acidosis(SArA) in lactating dairy cows

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Journal of Animal Science and Biotechnology 2024年第5期15卷 2059-2080页

作者： Junfei guo Zhengxiao Zhang le Luo guan Ilkyu Yoon Jan c.Plaizier Ehsan Khafipour Department of Animal Science University of ManitobaWinnipegMB R3T 2N2Canada Present Address:college of Food and Biological Engineering Jimei UniversityXiamenFujian 361021China Department of Agr.culture Food and Nutrition DepartmentUniversity of AlbertaEdmontonAB T6G 2R3Canada Faculty of Land and Food Systems University of British ColumbiaVancouverBC V6T 1Z4Canada Diamond V Cedar RapidsIA 52404United States Present Address:cargill Animal nutrition 15407 McGinty Road WestWayzataMN 55391USA

Background Subacute ruminal acidosis(SArA)is a common metabolic disorder of high yielding dairy cows,and it is associated with dysbiosis of the rumen and gut microbiome and host *** study evaluated the impact of two postbiotics from Saccharomyces cerevisiae fermentation products(ScFP)on rumen liquid associated microbiota of lactating dairy cows subjected to repeated grain-based SArA challenges.A total of 32 rumen cannulated cows were randomly assigned to 4 treatments from 4 weeks before until 12 weeks after *** groups included a control diet or diets supplemented with postbiotics(ScFPa,14 g/d original XPc;ScFPb-1X,19 g/d nutri Tek;ScFPb-2X,38 g/d nutri Tek,Diamond V,cedar rapids,IA,USA).grain-based SArA challenges were conducted during week 5(SArA1)and week 8(SArA2)after parturition by replacing 20%DM of the base total mixed ration(TMr)with pellets containing 50%ground barley and 50%ground *** DnA from rumen liquid samples was subjected to V3–V416S r rnA gene amplicon *** of rumen microbiota were compared among treatments and SArA *** Both SArA challenges reduced the diversity and r.chness of rumen liquid microbiota,altered the overall composition(β-diversity),and its predicted functionality including carbohydrates and amino acids metabolic *** SArA challenges also reduced the number of significant associations among different taxa,number of hub taxa and their.composition in the microbial co-occurrence *** with ScFP postbiotics,in particular ScFPb-2X,enhanced the robustness of the rumen *** ScFP supplemented cows had less fluctuation in relative abundances of community members when exposed to SArA *** ScFP supplementation promoted the populations of lactate utilizing and fibrolytic bacteria,including members of ruminococcaceae and Lachnospir.ceae,and also increased the numbers of hub taxa during non-SArA and SArA *** with S

关键词： Postbiotics rumen microbiota Saccharomyces cerevisiae fermentation products SArA

Early Phases of Star Formation: Testing chemical Tools

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research in Astronomy and Astrophysics 2024年第1期24卷 96-118页

作者： n.c.Martinez S.Paron conIcET-Universidad de Buenos Aires.Instituto de Astronomía y Física del Espacio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

Star-forming pr.cesses strongly influence the ISM ***,many high-quality databases are available at millimeter *** them,it is possible to carry out studies that review and deepen previous *** these studies involve large samples of sources,it is preferred to use dir.ct tools to study the molecular *** the aim of testing these tools such as the use of the Hcn/Hnc ratio as a thermometer,and the use of H^(13)co^(+),Hc_(3)n,n_(2)H^(+) and c_(2)H as "chemical clocks," we present a molecular line study toward 55 sources representing massive young stellar objects at different evolutionary stages:infrared dark clouds(Ir.cs),highmass protostellar objects(HMPos),hot molecular.cores(HMcs) and ultr.compact H II *** found that the use of the Hcn/Hnc ratio as a universal thermometer in the ISM should be taken with care because the Hcn optical depth is a big issue that can affect the ***,this tool should be utilized only after a careful analysis of the Hcn spectrum,checking that no line,neither the main nor the hyperfine ones,presents absorption *** point out that the analysis of the emission of H^(13)co^(+),Hc_(3)n,n_(2)H^(+) and c_(2)H could be useful to tr.ce and distinguish regions among Ir.cs,HMPos and *** molecular line widths of these four species increase from the Ir.c to the HMc stage,which can be a consequence of the gas dynamics related to the starforming pr.cesses taking place in the molecular *** results not only contribute with more statistics,acting as a probe of such chemical tools,useful to obtain information in large samples of sources,but also complement previous works through the analysis of other types of sources.

关键词： stars:formation ISM:molecules ISM:clouds

control system design for a pressure-tube-type supercritical water.cooled nuclear reactor via a higher order sliding mode method

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nuclear Science and Techniques 2024年第1期35卷 145-154页

作者： M.Hajipour g.r.Ansarifar Department of nuclear Engineering Faculty of PhysicsUniversity of IsfahanIsfahan 81746-73441Iran

nuclear power plants exhibit non-linear and time-variable ***,designing a control system that sets the reactor power and forces it to follow the desired load is complicated.A supercritical water reactor(ScWr)is a fourth-generation conceptual *** an ScWr,the non-linear dynamics of the reactor require a controller.capable of control-ling the *** this study,a pressure-tube-type ScWr was controlled during reactor power maneuvering with a higher order sliding mode,and the reactor outgoing steam temperature and pressure were controlled *** an ScWr,the temperature,pressure,and power must be maintained at a setpoint(desired value)during power *** point kinetics equations with three groups of delayed neutrons were used in the ***-order and classic sliding mode controllers were separately manufactured to control the plant and were compared with the PI controllers speci-fied in previous *** controlled parameters were reactor power,steam temperature,and ***,for these parameters,the PI controller had certain instabilities in the presence of *** classic sliding mode controller had a higher accur.cy and stability;however its main drawback was the chattering *** was highly accurate and stable and had a small computational *** reality,it followed the desired values without oscillations and chattering.

关键词： Supercritical water nuclear reactor Higher order sliding mode controller Steam temperature Steam pressure Point kinetics model

Imprints of a gravitational wave through the weak field deflection of photons

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chinese Physics c 2024年第8期48卷 240-245页

作者： reggie c.Pantig Ali Övgün Physics Department Mapúa University658 Muralla St.IntramurosManila 1002Philippines Physics Department Eastern Mediterranean UniversityFamagusta99628 North Cyprusvia Mersin 10Turkiye

In this study,we investigate the novel phenomenon of gravitational lensing experienced by gravitational waves traveling past a Schwarzschild black hole perturbed by a specific,first-order,polar gravitational *** apply the gauss-Bonnet theorem,finding a topological contribution to the deflection of light rays passing near the black *** demonstrate that the deflection angle can be determined by analyzing a region entirely outside the path of the light ray,leading to a calculation based solely on the parameters of the perturbing wave(legendre polynomial order,l;frequency,σ).This approach offers a unique perspective on gravitational lensing and expands our understanding of black hole inter.ctions with gravitational waves.

关键词： supermassive black holes gravitational waves chaos weak deflection angle gauss-Bonnet theorem