检索结果-南通市图书馆

Piezoelectric atomizer in aeroponic systems:A study of some fluid properties and optimization of operational parameters

引用

Information Processing in Agriculture 2023年第4期10卷 564-580页

作者： Amir Hossein Mirzabe Ali Hajiahmad Ali Fadavi shahin rafiee Department of Mechanics of Biosystem Engineering Faculty of Engineering&TechnologyCollege of Agriculture&Natural ResourcesUniversity of TehranKaraj ***Iran Department of Food Technology College of AburaihanUniversity of TehranTehran ***Iran

The piezoelectric method to atomize fluids in aeroponic systems is known as a new *** the current study,the effects of four independent variables on the misting rate were *** variables were Dosage of Chemical Fertilizer(DCF),the Height of Solution above Piezoelectric Ceramic(HSPC),Piezoelectric Location at the Bottom of the Container(PLBC),and the Container Geometry(CG).Physical properties such as fluid density,viscosity,surface tension,Total Dissolved Solids(TDS),and Electrical Conductivity(EC)of the solutions were ***,optimization was performed to determine suitable ranges of independent variables to get the optimum value of the misting *** showed that the HSPC,PLBC,and CG significantly affect the total misting rate(P<1%).Besides,the DCF,HSPC,and CG have significant effects on surface evaporation at a probability level of 1%.At the temperature of 25℃and for different concentrations of fertilizer,the density,viscosity,surface tension,TDS,and EC varied between 1002-1006.5 kg/m^(3),1.009-1.395 mPas,0.07182-0.07298 N/m,253-3397 mg/L,502-6795 mS/cm,*** misting rate ranged between 0.499 and 5.720 g/*** the outlet of the mist generation container,mass flow rate was in the range of 59.895 to 65.116 g/***,theoretically calculated mist average droplet size was in the range of 2.90 to 2.92 mm for different fertilizer *** present study is the first research on the factors affecting the ultrasonic mist production rate in an aeroponic *** future developments,effect of voltage,frequency,and using horn should be ***,similar research should be done in the field of gas-phase bioreactors(mist bioreactors).

关键词： Chemical fertilizer Ultrasonic Misting rate Viscosity Surface tension Surface evaporation

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

Development of an intelligent system based on ANFIS for predicting wheat grain yield on the basis of energy inputs

引用

Information Processing in Agriculture 2014年第1期1卷 14-22页

作者： Benyamin Khoshnevisan shahin rafiee Mahmoud Omid Hossein Mousazadeh Department of Agricultural Machinery Engineering Faculty of Agricultural Engineering and TechnologyUniversity of TehranKarajIran

Energy is regarded as one of the most important elements in agricultural *** the last decades energy consumption in agriculture has increased,so finding the relationship between energy consumption and crop yields in agricultural production can help to achieve sustainable *** this study several adaptive neuro-fuzzy inference system(ANFIS)models were evaluated to predict wheat grain yield on the basis of energy ***,artificial neural networks(ANNs)were developed and the obtained results were compared with ANFIS *** the best ANFIS structure gained in this study,R,RMSE and MAPE were calculated as 0.976,0.046 and 0.4,*** developed ANN was a multilayer perceptron(MLP)with eleven neurons in the input layer,two hidden layers with 32 and 10 neurons and one neuron(wheat grain yield)in the output *** the best ANN model,R,RMSE and MAPE were computed as 0.92,0.9 and 0.1,*** results illustrated that ANFIS model can predict the yield more precisely than ANN.

关键词： Wheat yield Energy consumption Prediction ANFIS ANN

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

Energy use pattern and optimization of energy required for broiler production using data envelopment analysis

引用

Information Processing in Agriculture 2016年第2期3卷 83-91页

作者： Sama Amid Tarahom Mesri Gundoshmian Gholamhossein Shahgoli shahin rafiee Department of Agricultural Machinery Engineering Faculty of Agriculture Technology And Natural ResourcesUniversity of Mohaghegh ArdabiliArdabilIran Department of Agricultural Machinery Engineering Faculty of Agriculture Engineering TechnologyUniversity of TehranKarajIran

A literature review shows that energy consumption in agricultural production in Iran is not efficient and a high degree of inefficiency in broiler production exists in *** consumption of broiler production in Ardabil province of Iran was studied and the nonparametric method of data envelopment analysis(DEA)was used to analyze energy efficiency,separate efficient from inefficient broiler producers,and calculate wasteful use of energy to optimize *** was collected using face-to-face questionnaires from 70 broiler farmers in the study *** returns to scale(CCR)and variable returns to scale(BCC)models of DEA were applied to assess the technical efficiency of broiler *** results indicated that total energy use was 154,283 MJ(1000 bird)^-1 and the share of fuel at 61.4%was the highest of all *** indices of energy efficiency,energy productivity,specific energy,and net energy were found to be 0.18,0.02 kg MJ^-1,59.56 MJ kg^-1,and^-126,836 MJ(1000 bird)^-1,*** DEA results revealed that 40%and 22.86%of total units were efficient based on the CCR and BCC models,*** average technical,pure technical,and scale efficiency of broiler farmers was 0.88,0.93,and 0.95,*** results showed that 14.53%of total energy use could be saved by converting the present units to optimal *** contribution of fuel input to total energy savings was 72%and was the largest share,followed by feed and electricity energy *** results of this study indicate that there is good potential for increasing energy efficiency of broiler production in Iran by following the recommendations for efficient energy use.

关键词： Broiler Data envelopment analysis Energy Technical efficiency

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

Effect of needle number on drying rate of kiwi fruit in EHD drying process

引用

Agricultural Sciences 2013年第1期4卷 1-5页

作者： Mohammad Jafar Dalvand Seyed Saeid Mohtasebi shahin rafiee Department of Agricultural Machinery Faculty of Agricultural Engineering and Technology University of Tehran Karaj Iran

Electrohydrodynamic (EHD) drying is a novel method of non-thermal processing. In this drying method, drying can be carried out using either AC or DC high voltages. The thermodynamic considerations regarding the lowering of temperature under EHD drying include rapid rates of evaporation and exothermic interaction of the electric field with a dielectric material. Multi-point and plate electrode systems are efficient in accelerating drying of agricultural materials. The electrode produces corona wind, which resembles a round jet, impinges and removes moisture from the surface. The enhancement of drying rate by corona discharge from needle electrodes has been experimentally evaluated in this study. Effects of three different categories, one needle, nine needles and seventeen needles on drying rate of kiwi fruit were studied, moreover in each category, Experiments were carried out using DC voltage levels of 6, 10.5 and 15 kV and field intensities 4.5 kV/cm. Results showed that the effect of needle number on drying rate was significant and drying rate of kiwi fruit reduced with increasing in needle numbers.

关键词： Drying Rate Electrode Field Strength High Voltage Needle Number

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

ROSIC: Enhancing secure and accessible robot control through open‐source instant messaging platforms

引用

IET Cyber-Systems and Robotics 2024年第2期6卷 35-51页

作者： Rasoul Sadeghian Shahrooz shahin Sina Sareh RCA Robotics Laboratory Royal College of ArtLondonUK

Ensuring secure communication and seamless accessibility remains a primary challenge in controlling robots *** authors propose a novel approach that leverages open-source instant messaging platforms to overcome the complexities and reduce costs associated with implementing a secure and user-centred communication system for remote robot control named Robot Control System using Instant Communication(ROSIC).By leveraging features,such as real-time messaging,group chats,end-to-end encryption and cross-platform support inherent in the majority of instant messenger platforms,we have developed middleware that establishes a secure and efficient communication system over the *** using instant messaging as the communi-cation interface between users and robots,ROSIC caters to non-technical users,making it easier for them to control *** architecture of ROSIC enables various scenarios for robot control,including one user controlling multiple robots,multiple users con-trolling one robot,multiple robots controlled by multiple users,and one user controlling one ***,ROSIC facilitates the interaction of multiple robots,enabling them to interoperate and function collaboratively as a swarm system by providing a unified communication platform that allows for seamless exchange of data and *** was specifically chosen as the instant messaging platform by the authors due to its open-source nature,robust encryption,compatibility across multiple platforms and interactive communication capabilities through channels and ***,the ROSIC is designed to communicate effectively with robot operating system(ROS)-based robots to enhance our ability to control them remotely.

关键词： encryption interactive communication remote robot control secure communication

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

Pore-scale study of the effects of DTPA chelating agent flooding on oil recovery utilizing a clay-coated micromodel

引用

Petroleum Research 2024年第2期9卷 228-237页

作者： Hojjat Mohammadzadeh Jamshid Moghadasi Khalil Shahbazi shahin Kord Department of Petroleum Engineering Ahwaz Faculty of Petroleum EngineeringPetroleum University of TechnologyAhwazIran

The use of diethylenetriaminepentaacetic acid(DTPA)chelating agent has shown promising results for enhanced oil recovery(EOR)in prior *** mechanisms,mainly resulting from rock-fluid interaction,have been proposed for chelating agent flooding;however,little attention has been paid to fluid-fluid interaction thus *** assessment of these mechanisms has primarily relied on macroscopic techniques such as core *** paper aims to investigate the injection of DTPA brine and its dominant mechanisms at the pore scale using a clay-coated *** micromodel tests were performed under oil-wet and water-wet *** a more precise examination of fluid/fluid interactions,the dynamic interfacial tension(IFT)and Zeta potential were *** was observed that the injection of DTPA brine in water-wet state changed the saturation distribution and increased oil *** on visual inspections,this change in saturation distribution could potentially be linked to the formation of micro-dispersions and viscoelastic interfacial ***-dispersions facilitate flow to unswept areas,and viscoelastic interface formation reshapes the interface between oil and brine,causing disconnected oil droplets to coalesce and thus increase *** the oil-wet state,the micro-dispersion formation and wettability alteration can be the dominant mechanisms,and the amount of recovered oil was higher than that observed in the water-wet ***,Zeta potential measurements at the interface between brine and oil showed a more negative value for DTPA brine,which is effective in wettability alteration and micro-dispersions *** results indicate that IFT reduction was not significant enough to be considered the dominant mechanism,although it assists in DTPA brine penetration into the crude oil and subsequent micro-dispersion formation.

关键词： Enhanced oil recovery technique Chelating agent Micromodel Fluid/fluid interaction Micro-dispersions Viscoelastic interface

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 neural branch-and-price for truck scheduling in cross-docks

引用

Science China Mathematics 2024年第6期67卷 1341-1358页

作者： Rahimeh Neamatian Monemi shahin Gelareh Nelson Maculan Wei-Kun Chen Sharkey Predictim Globe Villeneuve d’Ascq59650France Département R&T IUT de BéthuneUniversitéd’ArtoisBéthuneF-62000France Federal University of Rio de Janeiro COPPE-PESCRio de JaneiroRJ 21941-972Brazil School of Mathematics and Statistics Beijing Institute of TechnologyBeijing100081China

In this paper,we address the complex problem of dock-door assignment and truck scheduling within cross-docking *** is a problem that requires frequent resolution throughout the operational day,as disruptions often invalidate the optimal *** the problem's highly combinatorial nature,finding an optimal solution demands significant computational time and ***,the distribution of data across problem instances over a lengthy planning horizon remains consistently stable,with minimal concern regarding distribution *** factors collectively establish the problem as an ideal candidate for a learn-to-optimize solution *** propose a Dantzig-Wolfe reformulation,solving it via both a conventional branch-and-price approach and a neural branch-and-price approach,the latter of which employs imitation ***,we introduce some classes of valid inequalities to enhance and refine the pricing problem through a branch-and-cut *** computational experiments demonstrate that this methodology is not only feasible but also presents a viable alternative to the traditional branch-and-price algorithms typically utilized for such challenges.

关键词： cross-docking MILP modeling Dantzig-Wolfe decomposition graph convolutional network

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

Short circuit analysis of a fault-tolerant current-limiting high temperature superconducting transformer in a power system in presence of distributed generations

引用

Superconductivity 2024年第1期9卷 74-86页

作者： Alireza Sadeghi shahin Alipour Bonab Wenjuan Song Mohammad Yazdani-Asrami Propulsion Electrification&Superconductivity GroupAutonomous Systems&Connectivity DivisionJames Watt School of EngineeringUniversity of GlasgowGlasgow G128QQUnited Kingdom

Power transformers are key elements for the safe and reliable delivery of electrical energy generated by renewable energy resources to consumers via transmission ***‐tolerant current‐limiting High Temperature Superconducting(FTCL HTS)transformers are type of superconducting transformers that tolerate fault for seconds and limit the fault current without the threat of burnout or delamination of tapes and deformation of *** this paper,the fault performance of a FTCL HTS transformer in a standard IEEE power system is *** studied transformer is a 50 MVA 132 kV/13.8 kV transformer where both windings are made up of HTS *** understudied power system consists of two microgrids with distributed *** of the power in microgrids is supplied by the upstream grid which is connected to the microgrids through the HTS *** fault scenarios have been considered in this power system,in each one of these scenarios,a fault happens in one of the *** considered fault scenarios have an approximate fault current of 18x to 23x of the rated current in the secondary *** showed that insulated windings in FTCL HTS transformers could substantially reduce the peak temperature of the HTS windings,compared to bare ***,post‐fault loading is imposed on the HTS windings,to observe their performance against the current increase after fault *** this case,for the first scenario of the faults,the FTCL HTS transformer could tolerate 192%of post‐fault overloading,while this number for the second fault scenario is 170%.Finally,the impact of post‐fault loading on the full recovery time was discussed.

关键词： Fault Energy Heat dissipation Heat transfer Insulation Recovery Time Temperature rise

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

The potent osteo-inductive capacity of bioinspired brown seaweed-derived carbohydrate nanofibrous three-dimensional scaffolds

引用

Marine Life Science & Technology 2024年第3期6卷 515-534页

作者： Zahra Dadashi Ouranj Saadi Hosseini Atefeh Alipour shahin Homaeigohar Shahram Azari Leila Ghazizadeh Mohammadali Shokrgozar Sabu Thomas Saeed Irian Hosein Shahsavarani Department of Cell and Molecular Biology Faculty of Biological SciencesKharazmi UniversityTehran 15719-14911Iran Laboratory of Regenerative Medicine and Biomedical Innovations National Cell Bank of IranPasteur Institute of IranTehran 13169-43551Iran Department of Nanobiotechnology Pasteur Institute of IranTehran 13169-43551Iran School of Science and Engineering University of DundeeDundee DD14HNUK School of Chemical Sciences Mahatma Gandhi UniversityKottayamKeralaIndia Department of Cell and Molecular Biology Faculty of Life Sciences and BiotechnologyShahid Beheshti UniversityTehran 19839-69411Iran Iranian Biological Resource Center Academic Center for EducationCulture and Research(ACECR)Tehran ***Iran

This study aimed to investigate the osteo-inductive capacity of a fucoidan polysaccharide network derived from brown algae on human adipose-derived stem cells(HA-MSCs)for bone *** physiochemical properties of the scaffold including surface morphology,surface chemistry,hydrophilicity,mechanical stiffness,and porosity were thoroughly *** in vitro and in vivo measurements implied a superior cell viability,proliferation,adhesion,and osteo-inductive performance of obtained scaffolds compared to using specific osteogenic induction medium with increased irregular growth of calcium crystallites,which mimic the structure of natural *** scaffold was highly biocompatible and suitable for cell *** examinations,such as quantification of mineralization,alkaline phosphatase,gene expression,and immunocytochemical staining of pre-osteocyte and bone markers confirmed that HAD-MSCs differentiate into osteoblasts,even without an osteogenic induction *** study provides evidence for the positive relationship and synergistic effects between the physical properties of the decellularized seaweed scaffold and the chemical composition of fucoidan in promoting the osteogenic differentiation of ***,the natural matrices derived from brown seaweed offers a sustainable,cost-effective,non-toxic bioinspired scaffold and holds promise for future clinical applications in orthopedics.

关键词： Bone tissue engineering Seaweed-derived scaffold Fucoidans HA-MSCs differentiation Osteoblasts

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

Evaluation of the nutritional value of Artemia nauplii for European seabass(Dicentrarchus labrax L.)larvae

引用

Aquaculture and Fisheries 2024年第1期9卷 78-84页

作者： Alaa A.El-Dahhar Rashwan S.Rashwan Samy Y.EL-Zaeem Shaimaa A.shahin Mona M.Mourad Mohammed F.El Basuini Animal and Fish Production Department Faculty of Agriculture-Saba BashaAlexandria UniversityAlexandria21526Egypt National Institute of Oceanography and Fisheries(NIOF) Cairo11562Egypt Department of Animal Production Faculty of AgricultureTanta UniversityTanta31527Egypt Faculty of Desert Agriculture King Salman International UniversitySouth Sinai46618Egypt

Adapted European seabass(Dicentrarchus labrax L.)larvae at 25 days post-hatching(dph)with a primary weight and length of 23 mg and 9.92 mm,start the weaning up to 46 dph using the weaning micro-diet(54%crude protein from fish meal,powder milk,and poultry egg)concurrently with Artemia enriched with fortification emulsions(0.6 g/L)of DHA selco®as a control group(DHAS)or Fish oil+20%Vitamin C(FOVC),or Fish oil+20%Vitamin E(FOVE),or Fish oil+10%Vit.C+10%Vit.E(FOCE),or Fish oil only(FO).At 46 dph,groups of larvae fed enriched Artemia with DHAS and FOVE exhibited the highest final body weight,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the lowest feed conversion ***,larvae in FOVC displayed the lowest final body weight,total length,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the highest feed conversion *** histological assessment exhibited no pathological alteration as well as an improvement in the structure with DHAS,FOVE,FOVC,and FOCE co-additives compared to *** peroxidase enzyme(GPx)recorded the highest rates(P<0.05)in groups fed Artemia supplemented with DHAS and FOVE followed by FOCE and *** the lowest record for GPx activity was noted in the FO *** conclusion,Using augmented Artemia nauplii with fish oil+vitamin E in single or in companion with vitamin C as cheap antioxidants support *** larval growth,survival,and antioxidant efficacy during the critical weaning period.

关键词： European seabass Gastrointestinal histology Antioxidants Vitamin C Vitamin E DHA

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：