检索结果-南通市图书馆

A concise review on surface and structural modification of porous zeolite scaffold for enhanced hydrogen storage

Chinese Journal of Chemical Engineering 2024年第6期70卷 33-53页

作者： B.A.Abdulkadir R.S.R.Mohd Zaki A.T.Abd Wahab S.n.Miskan Anh-Tam nguyen Dai-viet n.Vo H.D.Setiabudi Centre for Research in Advanced Fluid&Processes Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Chemical&Process Engineering Technology Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Center of Excellence for Green Energy and Environmental nanomaterials(CE@GrEEn) Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

Investigating zeolites as hydrogen storage scaffolds is imperative due to their porous nature and favorable physicochemical ***,the storage capacity of the unmodified zeolites has been rather unsatisfactory(0.224%-1.082%(mass))compared to its modified ***,the contemporary focus on enhancing hydrogen storage capacities has led to significant attention towards the utilization of modified zeolites,with studies exploring surface modifications through physical and chemical treatments,as well as the integration of various active *** enhanced hydrogen storage properties of zeolites are attributed to the presence of aluminosilicates from alkaline and alkaline-earth metals,resulting in increased storage capacity through interactions with the charge density of these ***,there is a great demand to critically review their role such as well-defined topology,pore structure,good thermal stability,and tunable hydrophilicity in enhanced hydrogen *** article aimed to critically review the recent research findings based on modified zeolite performance for enhanced hydrogen *** of the factors affecting the hydrogen storage capacities of zeolites that can affect the rate of reaction and the stability of the adsorbent,like pressure,structure,and morphology were studied,and ***,future perspectives,recommendations,and directions for modified zeolites were discussed.

关键词： Zeolites Hydrogen storage Surface modification Adsorption Active metal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The evaluation of next-generation probiotics on broiler growth performance,gut morphology,gut microbiome,nutrient digestibility,in addition to enzyme production of Bacillus *** vitro

引用

Animal nutrition 2024年第3期18卷 133-144页

作者： Jacoba I.Bromfield Shahram niknafs Xiaojing Chen Juhani von Hellens Darwin Horyanto Baode Sun Lei Yu viet Hai Tran Marta navarro Eugeni Roura Bioproton Pty Ltd Acacia RidgeBrisbaneQueenslandAustralia Centre for nutrition and Food Sciences Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandBrisbaneQueenslandAustralia Centre for Animal Science Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandBrisbaneQueenslandAustralia

Considerable research has been conducted into the efficacy of individual probiotics in broiler production,however information on the most effective combinations of synergistic Bacillus probiotic is *** study investigated the impact of different Bacillus strain combinations in broiler chickens,as well as in vitro enzyme *** experiment one,a total of 576 Ross 308 broilers at 1 d old were grown for 21 d across 6 treatments of maize-soybean diets(n=12 pens per treatment)to compare three different strain combinations(formulation 1[F1]:3 strains Bacillus amyloliquefaciens;F2:Bacillus coagulans and 2 strains ***;F3:***,Bacillus licheniformis and 2 strains ***;F5:Bacillus subtilis,*** and 2 strains ***),positive control(PC),and a negative control antibiotic treatment group(nC).In Exp.2,a total of 360 one-day-old ROSS308 broilers were used to test five treatments(n=9)including PC,nC,F1 and F5(selected from Exp.1),and F4(Bacillus pumilis and 2 strains ***)in a maize-soybean *** F1 demonstrated a significant improvement in feed conversion ratio(FCR)compared to F2 at d 14(1.49 vs 2.10;P=0.038)and the body weight(BW)at d 21(847.0 g vs 787.4 g)compared to other combinations(P=0.027).The FCR at d 21 tended to be lower in birds fed F1(1.46 vs 1.66)compared to the control(P=0.068).Probiotic treatments had significantly improved nutrient digestibility compared to the PC and ***,probiotic treatments supported the growth of Streptococcus,a common commensal genus and reduced the abundance of genera that correlated with low weight gain such as *** two revealed that F4 improved FCR(Pnd BW at 28 d(P=0.014).In vitro testing showed a high production of protease and amylase by ***,the addition of Bacillus probiotics,particularly containing *** strains and Bacillus pumilus,into the diet of broiler chickens improves

关键词： Broiler Probiotic Bacillus Gut health Microbial profile

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chebyshev polynomial-based Ritz method for thermal buckling and free vibration behaviors of metal foam beams

引用

Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 891-910页

作者： n.D.nguyEn T.n.nguyEn Faculty of Civil Engineering Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Faculty of Engineering and Technology Kien Giang UniversityChau Thanh 92000Viet Nam

This study presents the Chebyshev polynomials-based Ritz method to examine the thermal buckling and free vibration characteristics of metal foam *** analyses include three models for porosity distribution and two scenarios for thermal *** material properties are assessed under two conditions,i.e.,temperature dependence and temperature *** theoretical framework for the beams is based on the higher-order shear deformation theory,which incorporates shear deformations with higher-order *** governing equations are established from the Lagrange equations,and the beam displacement fields are approximated by the Chebyshev *** simulations are performed to evaluate the effects of thermal load,slenderness,boundary condition(BC),and porosity distribution on the buckling and vibration behaviors of metal foam *** findings highlight the significant influence of temperature-dependent(TD)material properties on metal foam beams'buckling and vibration responses.

关键词： Ritz method Chebyshev function buckling vibration metal foam beam higher-order beam theory(HOBT)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Free vibration characteristics of sectioned unidirectional/bidirectional functionally graded material cantilever beams based on finite element analysis

引用

Applied Mathematics and Mechanics(English Edition) 2020年第12期41卷 1787-1804页

作者： n.V.viet W.ZAKI Quan WAnG Department of Mechanical Engineering Khalifa University of Science and TechnologyAbu Dhabi 127788United Arab Emirates Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhen 518055Guangdong ProvinceChina Department of Civil and Environmental Engineering Shantou UniversityShantou 515063Guangdong ProvinceChina

Advancements in manufacturing technology,including the rapid development of additive manufacturing(AM),allow the fabrication of complex functionally graded material(FGM)sectioned *** of these beams may be made from different materials with possibly different gradients of material *** present work proposes models to investigate the free vibration of FGM sectioned beams based on onedimensional(1D)finite element *** this purpose,a sample beam is divided into discrete elements,and the total energy stored in each element during vibration is computed by considering either the Timoshenko or Euler-Bernoulli beam ***,Hamilton’s principle is used to derive the equations of motion for the *** effects of material properties and dimensions of FGM sections on the beam’s natural frequencies and their corresponding mode shapes are then investigated based on a dynamic Timoshenko model(TM).The presented model is validated by comparison with three-dimensional(3D)finite element simulations of the first three mode shapes of the beam.

关键词： finite element model(FEM) dynamics functionally graded material(FGM) Timoshenko beam theory

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Element Analysis of Instrumented Sharp Indentations into Pressure-sensitive Materials

引用

Journal of Materials Science & Technology 2007年第2期23卷 277-282页

作者： Minh-quy LE Seock-Sam KIM Department of Mechanics of Materials & Structures Faculty of Mechanical EngineeringHanoi University of TechnologyDai Co Viet RoadHanoi Vietnam School of Mechanical Engineering Kyungpook National UniversityDaegu 702-701South Korea

Finite element analysis was carried out to investigate the conical indentation response of elastic-plastic solids within the framework of the hydrostatic pressure dependence and the power law strain hardening. A large number of 40 difierent combinations of elasto-plastic properties with n ranging from 0 to 0.5 and σy/E ranging from 0.0014 to 0.03 were used in the computations. The loading curvature C and the average contact pressure Pave were considered within the concept of representative strains and the dimensional *** functions associated with these two parameters were formulated for each studied value of the pressure sensitivity. The results for pressure sensitive materials lie between those for Von Mises materials and the elastic model.

关键词： Finite element analysis Indentation Mechanical Properties Pressure-sensitive materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A nOTE On SInGULAR InTEGRALS WITH DOMInATInG MIXED SMOOTHnESS In TRIEBEL-LIZORKIn SPACES

引用

Acta Mathematica Scientia 2014年第4期34卷 1331-1344页

作者： Hung viet LE Faculty of Science and Technology Hoa Sen UniversityQuang Trung Software ParkSection 10Ward Tan Chanh HiepDistrict 12Ho Chi Minh CityViet Nam

Let h, be a measurable function defined on R^＋ ×R^＋. Let Ω ∈ L（log L^＋）^υq （S^n1-1 × S^n2-1）（1≤ υq ≤ 2） be homogeneous of degree zero and satisfy certain cancellation conditions. We show that the singular integral Tf（x1,x2）=p.v.∫∫R^n1＋n2 Ω（y′1,y′2）h（｜y1｜,｜y2｜）/｜y1｜^n1｜y2｜^n2 f（x1-y1,x2-y2）dy1dy2maps from Sp,q^α1,α2F（R^n1×R^n2）boundedly to itself for 1 〈 p, q 〈 ∞, α1, α2 ∈R.

关键词： singular integrals Marcinkiewicz integrals mixed smoothness Triebel-Lizorkin spaces

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The effect of electric vehicle energy storage on the transition to renewable energy

引用

Green Energy and Intelligent Transportation 2023年第1期2卷 16-25页

作者： Efstathios E.Michaelides viet n.D.nguyen Dimitrios n.Michaelides Department of Engineering TCUFort WorthTX76132USA University Wisconsin-Madison MadisonWIUSA

The most viable path to alleviate the Global Climate Change is the substitution of fossil fuel power plants for electricity generation with renewable energy *** substitution requires the development of very large energy storage capacity,with the inherent thermodynamic irreversibility of the storage-recovery ***,the world experiences a significant growth in the numbers of electric vehicles with large batteries.A fleet of electric vehicles is equivalent to an efficient storage capacity system to supplement the energy storage system of the electricity *** based on the hourly demand-supply data of ERCOT,a very large electricity grid,show that a fleet of electric vehicles cannot provide all the needed capacity and the remaining capacity must be met by *** though the storage capacity of the batteries is close to 1–2%of the needed storage capacity of the grid,the superior round-trip storage efficiency of batteries reduces the energy dissipation associated with the storage and recovery processes by up to 38%and the total hydrogen storage capacity by up to 50%.The study also shows that anticipated improvements in the round-trip efficiencies of batteries are almost three times more effective than improvements in hydrogen storage systems.

关键词： Fossil fuel substitution Decarbonization Electric vehicles Energy storage Vehicle to grid Batteries

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A combination of damage locating vector method （DLV） and differential evolution algorithm （DE） for structural damage assessment

引用

Frontiers of Structural and Civil Engineering 2018年第1期12卷 92-108页

作者： T. nguyEn-THOI A. TRAn-viet n. nguyEn-MInH T. VO-DUY V. HO-HUU Division of Computational Mathematics and Engineering Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Division of Construction Computation Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Faculty of Civil Engineering Ton Duc Thang University Hochiminh City Vietnam

In this study, a two-stage method is presented for identifying multiple damage scenarios. In the first stage, the damage locating vector （DLV） method using normalized cumulative energy （nce） is employed for damage localization in structures. In the second stage, the differential evolution algorithm （DE） is used for damage severity of the structures. In addition, in the second stage, a modification of an available objective function is made for handing the issue of symmetric structures. To verify the effectiveness of the present technique, numerical examples of a 72-bar space truss and a one-span steel portal frame are considered. In addition, the effect of noise on the performance of the identification results is also investigated. The numerical results show that the proposed combination gives good assessment of damage location and extent for multiple structural damage cases.

关键词： damage assessment damage locating vector method (DLV) differential evolution (DE) multiple damagelocation assurance criterion (MDLAC) mode shape error function

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization, equilibrium, adsorption behavior and role of surface functional groups on graphene oxide-based nanocomposite towards diclofenac drug

引用

Journal of Environmental Sciences 2020年第7期32卷 137-150页

作者： Thuan Van Tran Duyen Thi Cam nguyen Hanh TnLe Dai-viet nVo Sonil nanda Trinh Duy nguyen nguyen Tat Thanh Hi-Tech Institute Nguyen Tat Thanh UniversityHo Chi Minh City 755414Viet Nam Center of Excellence for Green Energy and Environmental nanomaterials(CE@GrEEn) Nguyen Tat Thanh UniversityHo Chi Minh City 755414Viet Nam Institute of Hygiene and Public Health Ho Chi Minh City 700000Viet Nam Department of Chemical and Biochemical Engineering University of Western OntarioLondonOntarioCanada

Aquatic contamination of diclofenac(DCF),an emergent non-steroidal anti-inflammatory drug(nSAIDs),can result in adverse effects to many ecosystems through ***,introducing effective remediation techniques to sequester the pharmaceutical wastes is highly fundamental to prevent their accumulation in the ***,adsorption has been presented as a green and efficient ***,we report the characterization and application of the novel magnetic nanocomposite(GO@CoFe2O4)derived from cobalt-based ferrite(CoFe2O4)and graphene oxide(GO)for DCF *** the optimization procedure,the response surface methodology(RSM)was adopted to investigate the impacts of DCF concentration(1.6-18.4 mg/L),DCF dosage(0.08-0.92 g/L),and solution pH(2.6-9.4)to find the optimum conditions for DCF removal,at 10.5 mg/L,0.74 g/L,and pH 4,*** the adsorption experiments,the kinetic,isotherm,thermodynamic,and intraparticle diffusion models were systematically ***,we have elucidated the role of functional groups on the surface of GO@CoFe2O4 in enhancing the adsorption of DCF *** good removal efficiency(up to 86.1%),high maximum adsorption capacity(32.4 mg/g),GO@CoFe2O4 can be a potential candidate to eliminate DCF drug from water.

关键词： Diclofenac sodium Graphene oxide Magnetic nanocomposite Response surface methodology Pharmaceuticals adsorption

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mobile power generation system based on biomass gasifcation

引用

International Journal of Coal Science & Technology 2022年第3期9卷 171-184页

作者： Lu Ding Mingming Yang Kai Dong Dai‑viet n.Vo Douglas Hungwe Jiahan Ye Alexander Ryzhkov Kunio Yoshikawa Institute of Clean Coal Technology East China University of Science and TechnologyShanghai 200237China Department of Environmental Science and Technology Tokyo Institute of Technology4259 Nagatsuta-choMidori-kuYokohama 226-8503Japan College of Chemistry Chemical Engineering and Material ScienceZaozhuang UniversityZaozhuang 277160China Institute of Environmental Technology and Sustainable Development Nguyen Tat Thanh UniversityHo Chi Minh City 755414Vietnam ZHE JIAnG ECO EnVIROnMEnTAL TECHnOLOGY CO. LTD.1188The Headquarters of the Free Port H Building 20FWuxing DistrictHuzhou CityZhejiang ProvinceChina Ural Federal University EkaterinburgRussia

Disaster-hit and/or un-electrifed remote areas usually have electricity accessibility issues and an abundance of plant-derived debris and wood from destroyed wooden structures;this can be potentially addressed by employing a decentralized ultrasmall biomass-fed gasifcation power generating *** paper presents an assessment of the technical viability of an ultra-small gasifcation system that utilizes densifed carbonized wood pellets/*** setup was run continuously for 100 h.A variety of biomass was densifed and carbonized by harnessing fugitive heat sources before charging into the *** briquettes and furnished blends exhibited inferior gasifcation performance compared to the carbonized *** the absence of tar blockage problems,steady-state conditions were achieved when pre-treated feedstock was *** steady-state conditions for carbonized pellets gasifcation operated at an equivalence ratio of 0.32,cold gas efciency and carbon conversion achieved 49.2%and 70.5%,*** efciency and maximum power output of 20.3%and 21 kW were realised,*** was found that the system could keep stable while the low heating valve of syngas was over 4 MJ/m^(3)on condition that avoiding tar blocking *** results indicate that the proposed compact ultra-small power generation system is a technically feasible approach to remedy power shortage *** addition,process simulation considering carbonized wood gasifcation combined power generation was formulated to produce syngas and *** pellets with the fow rate of 20 kg/h could generate a 15.18 kW power at the air fow rate of 40 nm^(3)/h,which is in a good agreement with 15 kW in the 100 h *** is indicated that the gasifcation combined power generation cycle simulated by Aspen simulator could achieve reliable data to assist the complicated experiment operation.

关键词： Small-scale power generation Densifcation Carbonized pellet Carbonized briquette Gasifcation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：