检索结果-南通市图书馆

Feasibility and reliability of agricultural crop height measurement using the laser sensor array

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

Information Processing in Agriculture 2024年第2期11卷 228-236页

作者： Pejman Alighaleh Tarahom Mesri Gundoshmian Saeed Alighaleh Abbas rohani Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadMashhadIran Department of Biosystems Engineering University of Mohaghegh ArdabiliArdabilIran Auckland Bioengineering Institute University of AucklandNew Zealand

Crop height measurement is widely used to analyze and estimate the overall crop condition and the amount of biomass *** only is manual measurement on a large scale time-consuming but also it is not ***,advanced equipment is available but they require technical skills and are not reasonable for *** article investigates the feasibility of a simple and low-cost measurement system that can monitor crops height of paddy rice and wheat using laser *** designing and fabricating,this system was tested and evaluated in both laboratory and farm *** the laboratory,paddy rice height was measured,and in the field section,the height detection system measured wheat *** results showed that the coefficient of determination(R3)between manual measurement and height detection system measurement for paddy rice was 0.96 and for wheat was ***,there was no significant difference between the two datasets at the level of 5%.Hence,this system can be a useful and accurate tool to monitor crops height in different growing steps.

关键词： Plant height Laser Rice Wheat Crop monitoring

3D打印和电沉积多层超轻夹层板的力学性能和能量吸收性能

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2024年第1期34卷 255-264页

作者： Mehrnoosh HOSSEINPOUR Salar rohani NEJAD Seyed Mohammad Hossein MIRBAGHERI Department of Materials and Metallurgical Engineering Amirkabir University of TechnologyHafez St.Tehran15875-4413Iran

研究由开孔聚合物和金属/聚合物泡沫芯制成的轻质夹层板的力学性能和能量吸收性能。通过结合聚合物树脂的增材制造和三层金属(Ni/Ni-Cu/Ni)的电沉积制备多层夹层板,每英寸孔数(PPI)为4、5和6。测试样品在单轴压缩变形过程中的屈服强度,... 详细信息

研究由开孔聚合物和金属/聚合物泡沫芯制成的轻质夹层板的力学性能和能量吸收性能。通过结合聚合物树脂的增材制造和三层金属(Ni/Ni-Cu/Ni)的电沉积制备多层夹层板,每英寸孔数(PPI)为4、5和6。测试样品在单轴压缩变形过程中的屈服强度,计算其能量吸收密度、互补能和比吸收能(SEA)。结果表明,与相同厚度的纯Ni和Cu夹层板相比,复合夹层板的性能有明显改善。增加PPI和金属层可提高力学性能和能量吸收性能,当PPI为6时,屈服强度(能量吸收密度)由聚合物夹层板的0.12 MPa(0.12MJ/m^(3))提高到三层金属夹层板的1.83MPa(0.67 MJ/m^(3))。对夹层板结构归一化能量的研究表明,夹层板具有可预测的塑性变形行为,多金属层改善了新型夹层板的力学性能。其能量吸收性能的显著增强可保证材料在不同行业的独特应用。

关键词：夹层板能量吸收金属泡沫 Voronoi结构增材制造金属电层级

MXene: From synthesis to environment remediation

维普期刊数据库

同方期刊数据库

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

Vitamin D therapy in pediatric patients with inflammatory bowel disease:a systematic review and meta-analysis

Chinese Journal of Chemical Engineering 2023年第9期

作者： Ali Nikkhah Hasan Nikkhah Hadis langari Alireza Nouri Abdul Wahab Mohammad Ang Wei Lun Ng law Yong rosiah rohani Ebrahim Mahmoudi

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2023年第1期19卷 48-57页

作者： Mohammad Hassan Sohouli Fatemeh Farahmand Hosein Alimadadi Parisa Rahmani Farzaneh Motamed Elma Izze da Silva Magalhaes Pejman rohani Pediatric Gastroenterology and Hepatology Research Center Pediatrics Centre of ExcellenceChildren's Medical CenterTehran University of Medical SciencesTehranIran Department of Clinical Nutrition and Dietetics Faculty of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran Postgraduate Programme in Collective Health Federal University of MaranhaoRua Barao de Itapary155CentroSao LuísMABrazil Pediatrics Gastroenterology Department of PediatricsSchool of MedicineChildren's Medical CenterTehran University of Medical SciencesTehranIran

Background There is some evidence for the role of vitamin D deficiency in the pathogenesis of inflammatory bowel disease(IBD)in the pediatric ***,the results are ***,we have conducted a systematic review and meta-analysis to evaluated the effect of vitamin D on pediatric patients with *** We carried out a systematic search in databases from inception until 20 January *** included all relevant articles that evaluate the efficacy and safety of vitamin D on disease activity,inflammatory factors,and vitamin D and calcium levels in pediatric patients with *** effects models were used to combine the *** main outcomes were then analyzed using weight mean difference(WMD)and respective 95%confidence interval(CI).Results Fifteen treatment arms met the eligibility criteria and were *** estimates indicated that intervention with vitamin D has a significantly beneficial effect on 25-hydroxy vitamin D3[25(OH)D3](pooled WMD of 17.662 ng/mL;CI 9.77-25.46;P<0.001),calcium(pooled WMD of 0.17 mg/dL;CI 0.04-0.30;P=0.009),and inflammatory factors including C-reactive protein(CRP)(pooled WMD of-6.57 mg/L;CI-11.47 to-1.67;P=0.009)and erythrocyte sedimentation rate(ESR)(pooled WMD of-7.94 mm/h;CI-12.65 to-3.22;P=0.001)*** addition,this effect was greater for vitamin D levels at doses greater than 2000 IU,and when follow-up duration was more than 12 *** This study showed that vitamin D therapy can have a significant and beneficial effect on 25(OH)D3,calcium,and inflammatory factors in children and adolescents with IBD.

关键词： Disease activity index Inflammation Meta-analysis IBD Pediatric Vitamin D

Zero-Index Metamaterial Superstrates UWB Antenna for Microwave Imaging Detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

计算机、材料和连续体（英文） 2023年第4期75卷 277-292页

作者： Mohd Aminudin Jamlos Nur Amirah Othman Wan Azani Mustafa Mohd Faizal Jamlos Mohamad Nur Khairul Hafizi rohani Faculty of Electronic Engineering Technology Universiti Malaysia PerlisPauh Putra Campus02600ArauMalaysia Faculty of Electrical Engineering Technology Universiti Malaysia PerlisPauh Putra Campus02600ArauMalaysia Faculty of Mechanical and Manufacturing Engineering Universiti Malaysia Pahang26600PekanMalaysia

Metamaterials(MTM)can enhance the properties of microwaves and also exceed some limitations of devices used in technical *** that the antenna is the element for realizing a microwave imaging(MWI)system since it is where signal transmission and absorption ***-Wideband(UWB)antenna superstrates with MTM elements to ensure the signal transmitted from the antenna reaches the tumor and is absorbed by the same *** lack of conventional head imaging techniques,for instance,Magnetic Resonance Imaging(MRI)and Computerized Tomography(CT)-scan,has been demonstrated in the paper focusing on the point of failure of these techniques for prompt diagnosis and portable ***,the importance ofMWIhas been addressed elaborately to portray its effectiveness and aptness for a primary tumor *** than that,MTM element designs have been discussed thoroughly based on their performances towards the contributions to the better image resolution of MWI with detailed *** paper proposes the novel design of a Zeroindex Split RingResonator(SRR)MTMelement superstrate with a UWB antenna implemented in MWI systems for detecting *** novel design of the MTM enables the realization of a high gain of a superstrate UWB antenna with the highest gain of 5.70 *** that,the MTM imitates the conduct of the zeroreflection phase on the resonance frequency,which does not *** antenna with an MTM unit is of a 7×4 and 10×5 Zero-index SRR MTM element that acts as a superstrate plane to the *** from that,Rogers(RT5880)substrate material is employed to fabricate the designed MTM unit cell,with the following characteristics:0.51mm thickness,the loss tangent of 0.02,as well as the relative permittivity of 2.2,with Computer Simulation Technology(CST)performing the simulation and *** MTM unit cells of 7×4 and 10×5 attained 0°with respect to the reflection phase at the 2.70 GHz frequency *** first design,MTM Antenna Design 1,c

关键词： Zero-index metamaterial(ZIM) ultra-wideband(UWB) microwave imaging(MWI)detection

Treatment of landfill waste, leachate and landfill gas： A review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2015年第1期9卷 15-32页

作者： Hecham OMAR Sohrab rohani The University of Western Ontario Department of Chemical and Biochemical Engineering London Ontario N6A 5B9 Canada

This review aims at the treatment of the entire landfill, including the waste mass and the harmful emissions： leachate and landfill gas. Different landfill treatments （aerobic, anaerobic and semi-aerobic bioreactor landfills, dry-tomb landfills）, leachate treatments （anaero- bic and aerobic treatments, anammox, adsorption, chemi- cal oxidation, coagulation/flocculation and membrane processes） and landfill gas treatments （flaring, adsorption, absorption, permeation and cryogenic treatments） are reviewed. Available information and the gaps present in current knowledge is summarized. The most significant areas to expand are landfill waste treatments, which in recent years has begun to grow but there is an opportunity for much more. Another area to explore is the treatment of landfill gas, a very large field to which not much effort has been put forth. This review is to compare different treatment methods and give direction to future research.

关键词： landfill aerobic anaerobic leachate landfillgases municipal solid waste

Applications of the crystallization process in the pharmaceutical industry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2010年第1期4卷 2-9页

作者： Sohrab rohani Department of Chemical and Biochemical Engineering University of Western OntarioLondonOntario N6A 5B9Canada

The applications of the crystallization technique in the pharmaceutical industry as a purification and separation process for the isolation and synthesis of pure active pharmaceutical ingredients(API),co-crystals,controlled release pulmonary drug delivery,and separation of chiral isomers are briefly discussed using a few case *** effect of process variables and solvent on the polymorphism and morphology of stavudine is *** implementation of external control in the form of feedback and real-time optimal control using cooling and antisolvent crystallization of paracetamol in water-isopropyl alcohol is *** methods to prepare micronsized drug particles,namely,micro-crystallization and polymer-coated API-loaded magnetic nanoparticles for pulmonary drug delivery,are *** significance of co-crystals in drug administration is highlighted using the theophylline-nicotinamide co-crystal *** of chloromandelic acid derivatives,a racemic compound,is achieved using direct crystallization and diastereomeric salts *** crystal structures of diastereomeric salts of chloromandelic acid and phenylethylamine are *** structure comparison between the less soluble and more soluble salts shows that weak interactions such as CH/πinteractions and van der Waals forces contribute to chiral recognition when the hydrogen bonding patterns are similar.

关键词： crystallization control of crystal properties polymorphism co-crystals pulmonary drug delivery resolution of chiral isomers

The practicality of Malaysia dengue outbreak forecasting model as an early warning system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2022年第3期7卷 510-525页

作者： Suzilah Ismail Robert Fildes rohani Ahmad Wan Najdah Wan Mohamad Ali Topek Omar School of Quantitative Sciences Universiti Utara Malaysia UUM SintokKedahMalaysia Centre for Marketing Analytics and Forecasting Lancaster UniversityUnited Kingdom Medical Entomology Unit Institute for Medical ResearchNational Institute of HealthMinistry of Health MalaysiaMalaysia Vector Borne Disease Sector Disease Control DivisionMinistry of Health MalaysiaMalaysia

Dengue is a harmful tropical disease that causes death to many ***,the dengue vaccine development is still at an early stage,and only intervention methods exist after dengue cases ***,previously,two scientific experimental field studies were conducted in producing a dengue outbreak forecasting model as an early warning ***,an Autoregressive Distributed Lag(ADL)Model was developed using three factors:the epidemiological,entomological,and environmental with an accuracy of 85%;but a higher percentage is required in minimizing the error for the model to be ***,this study aimed to develop a practical and cost-effective dengue outbreak forecasting model with at least 90%accuracy to be embedded in an early warning computer system using the Internet of Things(IoT)***-one weeks of time series data of the three factors were used in six forecasting models,which were Autoregressive Distributed Lag(ADL),Hierarchical Forecasting(Bottom-up and Optimal combination)and three Machine Learning methods:(Artificial Neural Network(ANN),Support Vector Machine(SVM)and Random Forest).Five error measures were used to evaluate the consistency performance of the models in order to ensure model *** findings indicated Random Forest outperformed the other models with an accuracy of 95%when including all three *** practically,collecting mosquito related data(the entomological factor)was very costly and time ***,it was removed from the model,and the accuracy dropped to 92%but still high enough to be of practical use,i.e.,beyond 90%.However,the practical ground operationalization of the early warning system also requires several rain gauges to be located at the dengue hot spots due to localized ***,further analysis was conducted in determining the location of the rain *** has led to the recommendation that the rain gauges should be located about 3e4 km apart at the dengue hot spots to ensure

关键词： dengue rainfall Machine learning Early warning system IoT

Additive manufacturing of metallic and polymeric load-bearing biomaterials using laser powder bed fusion:A review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第35期94卷 196-215页

作者： Alireza Nouri Anahita rohani Shirvan Yuncang Li Cuie Wen School of Engineering RMIT UniversityMelbourneVictoria 3001Australia Biomedical Engineering Department Amirkabir University of TechnologyTehranIran Textile Engineering Department Amirkabir University of TechnologyTehranIran

Surgical prostheses and implants used in hard-tissue engineering should satisfy all the clinical,mechanical,manufacturing,and economic requirements in order to be used for load-bearing ***,and to a lesser extent,polymers are promising materials that have long been used as load-bearing *** the rapid development of additive manufacturing(AM)technology,metallic and polymeric implants with complex structures that were once impractical to manufacture using traditional processing methods can now easily be made by *** technology has emerged over the past four decades as a rapid and cost-effective fabrication method for geometrically complex implants with high levels of accuracy and *** ability to design and fabricate patient-specific,customized structural biomaterials has made AM a subject of great interest in both research and clinical *** different AM methods,laser powder bed fusion(L-PBF)is emerging as the most popular and reliable AM method for producing load-bearing *** layer-by-layer process uses a high-energy laser beam to sinter or melt powders into a part patterned by a computer-aided design(CAD)*** most important load-bearing applications of L-PBF-manufactured biomaterials include orthopedic,traumatological,craniofacial,maxillofacial,and dental *** unequalled design freedom of AM technology,and L-PBF in particular,also allows fabrication of complex and customized metallic and polymeric scaffolds by altering the topology and controlling the macro-porosity of the *** article gives an overview of the L-PBF method for the fabrication of load-bearing metallic and polymeric biomaterials.

关键词： Additive manufacturing Load-bearing biomaterials Powder bed fusion(PBF) Selective laser melting(SLM) Selective laser sintering(SLS)