检索结果-南通市图书馆

Wind tunnel test and numerical simulation of wind pressure on a high-rise building

在线全文

学校读者我要写书评

暂无评论

Journal of Chongqing University 2010年第1期9卷 47-53页

作者： al zoubi feras Department of Civil Engineering Chongqing University

We carried out a wind tunnel test to measure cladding loads for a high-rise building of 295 m in height, which would be located in the business center of Chongqing Municipality, P. R. China. The rigid model was used to determine fluctuating local pressures on the exterior surfaces of the building. The wind tunnel test results show the cr/tical zone of wind pressures on building surfaces in both standalone and interference conditions. The computational fluid dynamics （CFD） was conducted by using the FLUENT Code to compare with the wind tunnel test results, and the steady three-dimensional turbulent flow with Realizable k-ε as a turbulence model was used. The CFD results are agree with the wind tunnel test results in regards to distributions of wind pressures over a high-rise building＇s surfaces.

关键词： comoutational fluid dynamics: wind oressure: high-rise building: wind tunnel test

A Participatory GIS Approach to Identify Critical Land Degradation Areas and Prioritize Soil Conservation for Mountainous Olive Groves(Case Study)

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2014年第3期11卷 782-791页

作者： Ahmed al-WADAEY feras ZIADAT Soil and Water Department Faculty of Agriculture Sana’a University Sana’a 00967 the Republic of Yemen International Center for Agricultural Research in the Dry Areas (ICARDA) P.O. Box 950764 – Amman 11195 Jordan

Climate change scenarios predict an increase in the frequency of heavy rainfall events in some areas. This will increase runoff and soil erosion, and reduce agricultural productivity, particularly on vulnerable mountainous agricultural lands that is already exhibiting high rates of soil erosion. Haphazard implementation of soil and water conservation （SWC） interventions on scattered fields is inefficient in reducing soil erosion. The objective of this study was to identify areas at high risk of erosion to aid the design and implementation of sustainable SWC using GIS analysis and farmers＇ participation approach. A 25 m digital elevation model （DEM） was used to derive layers of flow accumulation, slope steepness and land curvature, which were used to derive an erosion-risk （priority） map for the whole watershed. Boundaries of farmers＇ fields were mapped and verified by the community and each field was classified into high, moderate or low erosion risk. Fields with low flow accumulation （top of hill） and/or steep slope and/or convex slope were assigned high erosion risk and therefore high implementation priority. The study showed that more than 54% of the fields were classified into high erosion risk areas. Accordingly, a community-watershed plan was established, revised and approved by the *** loans to implement SWC measures were distributed to 100 farmers based on the priorities of their fields. Judged by local farmers and using 16 randomly selected fields, 90% of the targeted areas were correctly identified using the erosion risk map. After two years, the conservation measures had led to marked improvement of soil conservation. The approach is simple and easy to comprehend by the community and provides scientific basis to prioritize the implementation of SWC and to target the most degraded areas, which amplify the impact of these in reducing the vulnerability to land degradation.

关键词： Flow accumulation Soil erosion Community-conservation plan Olive Priority map

Surgical strategies in the therapy of non-small cell lung cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Oncology 2014年第4期5卷 595-603页

作者： feras al-Shahrabani Daniel Vallbhmer Sebastian Angenendt Wolfram T Knoefel Department of Surgery A Section of Thoracic Surgery Heinrich Heine University and University Hospital40225 Düsseldorf NRW Germany

Lung cancer represents the leading cause of cancer mortality worldwide. Despite improvements in preoperative staging, surgical techniques, neoadjuvant/adjuvant options and postoperative care, there are still major difficulties in significantly improving survival, especially in locally advanced non-small cell lung cancer(NSCLC). To date, surgical resection is the primary mode of treatment for stage?Ⅰ?and Ⅱ NSCLC and has become an important component of the multimodality therapy of even more advanced disease with a curative intention. In fact, in NSCLC patients with solitary distant metastases, surgical interventions have been discussed in the last years. Accordingly, this review displays the recent surgical strategies implemented in the therapy of NSCLC patients.

关键词： Non-small cell lung cancer Multimodality therapy Surgical techniques Neoadjuvant/adjuvant therapy Solitary distant metastases

Variability in Quantity and Salinity of Produced Water from an Oil Production in South Kuwait

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering（科研） 2024年第1期16卷 8-23页

作者： feras al Salem Thies Thiemann Department of Biology College of Science United Arab Emirates University Al Ain United Arab Emirates Department of Chemistry College of Science United Arab Emirates University Al Ain United Arab Emirates

Produced water (PW) is the largest waste stream in the oil and gas industry. Water remains trapped for millions of years in the reservoir with oil and gas. When a hydrocarbon reservoir is infiltrated by a production well, the produced fluids commonly contain water. The understanding of this water’s constituents and volumes is vital for the sustainable continuity of production operations, as PW has a number of negative impacts on the infrastructure integrity of the operation. On the other hand, PW can be an alternative source of irrigation water as well as of industrial salt. Interestingly, both the quantity as well as the quality of PW do not remain constant but can vary, both progressively and erratically, even over short periods of time. This paper discusses such a situation of variable PW in an oil and gas operation in the State of Kuwait.

关键词： Produced Water Oil Wells Water-Cut Salinity Fluctuation Total Dissolved Solids

Day-ahead industrial load forecasting for electric RTG cranes

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 Modern Power Systems and Clean Energy 2018年第2期6卷 223-234页

作者： feras alASalI Stephen HABEN Victor BECERRA William HOLDERBAUM School of Systems Engineering University of Reading Mathematical Institute University of Oxford School of Engineering University of Portsmouth School of Engineering Metropolitan Manchester University

Given the increase in international trading and the significant energy and environmental challenges in ports around the world, there is a need for a greater understanding of the energy demand behaviour at *** move towards electrified rubber-tyred gantry(RTG)cranes is expected to reduce gas emissions and increase energy savings compared to diesel RTG cranes but it will increase electrical energy demand. Electrical load forecasting is a key tool for understanding the energy demand which is usually applied to data with strong regularities and seasonal patterns. However, the highly volatile and stochastic behaviour of the RTG crane demand creates a substantial prediction challenge. This paper is one of the first extensive investigations into short term load forecastsfor electrified RTG crane demand. Options for model inputs are investigated depending on extensive data and correlation analysis. The effect of estimation accuracy of exogenous variables on the forecast accuracy is investigated as well. The models are tested on two different RTG crane data sets that were collected from the Port of Felixstowe in the UK. The results reveal the effectiveness of the forecast models when the estimation of the number of crane moves and container gross weight are accurate.

关键词： Rubber-tyred gantry(RTG) cranes Correlation analysis Exogenous variables estimation Artificial neural networks Time series forecast modelling

Numerical Examination of Free Convection Flow of Casson Ternary Hybrid Nanofluid across Magnetized Stretching Sheet Impacted by Newtonian Heating

在线全文

学校读者我要写书评

暂无评论

Frontiers in Heat and Mass Transfer 2023年第1期21卷 505-522页

作者： Mohammed Z.Swalmeh Firas A.alwawi A.A.altawallbeh Wejdan Mesa’adeen feras M.al Faqih Ahmad M.Awajan Faculty of Arts and Sciences Aqaba University of TechnologyAqaba77110Jordan Department of Mathematics College of Sciences and Humanities in Al-KharjPrince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Mathematics School of Basic and Marine SciencesThe University of JordanAqaba77110Jordan Department of Mathematics Al-Hussein Bin Talal UniversityMa’an71111Jordan

In current study,the influence of magnetic field(MHD)on heat transfer of natural convection boundary layer flow in Casson ternary hybrid nanofluid past a stretching sheet is studied using numerical *** Newtonian heating boundary conditions that depend on the temperature and velocity terms are taken into this *** particular dimensional governing equations,for the studied problem,are converted to the system of partial differential equations utilizing adequate similarity ***,the system of equations is numerically solved using well-known Kellar box numerical *** obtained numerical results are in excellent approval with previous literature *** existence of types for composite ternary nanoparticles,which as alumina al2O3,copper oxide CuO,and silver Ag or copper Cu,as well as water H2O which is considered an essential fluid,are *** physical features,such as temperature,velocity,local skin friction coefficient,and local Nusselt number are explored with the variation of MHD Casson ternary hybrid nanofluids parameters and displayed graphically and tabularly in the present *** numerical outcomes exhibit that when the conjugate parameter values rise,the temperature and local Nusselt number increase,however they decrease as the Casson parameter is reduced.

关键词： Casson ternary hybrid nanofluid fluid magnetic field stretching sheet newtonian heating

Vibration induced flow in hoppers:DEM 2D polygon model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2008年第6期6卷 455-466页

作者： feras Y. Fraige Paul A. Langston Andrew J. Matchett John Dodds Faculty of Mining and Environmental Engineering Al-Hussein Bin Talal University Jordan Chemical and Environmental Engineering Nottingham University University Park Chemical Engineering University of Teesside Centre RAPSODEE Ecole Des Mines

A two-dimensional discrete element model （DEM） simulation of cohesive polygonal particles has been developed to assess the benefit of point source vibration to induce flow in wedge-shaped hoppers. The particle-particle interaction model used is based on a multi-contact principle. The first part of the study investigated particle discharge under gravity without vibration to determine the critical orifice size （Bc） to just sustain flow as a function of particle shape. It is shown that polygonal-shaped particles need a larger orifice than circular particles. It is also shown that Bc decreases as the number of particle vertices increases. Addition of circular particles promotes flow of polygons in a linear manner. The second part of the study showed that vibration could enhance flow, effectively reducing Bc. The model demonstrated the importance of vibrator location （height）, consistent with previous continuum model results, and vibration amplitude in enhancing flow.

关键词： Bulk solids Vibration DEM Hoppers Materials handling Polygon

HDAC-dependent decrease in histone crotonylation during DNA damage

在线全文

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2019年第9期11卷 804-806页

作者： Enas R.A bu-Zhayia feras E.Machour Nabieh Ayoub Department of Biology Technion-lsrael Institute of TechnologyHaifa 3200003Israel

Dear Editor,The DNA damage response(DDR)ensures repair of DNA lesions caused by endogenous and exogenous mutagens that constantly threaten genomic *** DDR results in accumulation of DNA lesions that could potentially lead to genomic instability and *** modifications(PTMs)including phosphorylation,methylation,acetylation,ubiquitination,and sumoylation play a central role in sensing,signaling,and repairing damaged DNA.

关键词： DDR damage constantly

Automated Handwriting Recognition and Speech Synthesizer for Indigenous Language Processing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第8期72卷 3913-3927页

作者： Bassam A.Y.alqaralleh Fahad aldhaban feras Mohammed A-Matarneh Esam A.alQaralleh MIS Department College of Business AdministrationUniversity of Business and TechnologyJeddah21448Saudi Arabia Department of Computer Science University College of DubaUniversity of Tabuk71491Saudi Arabia School of Engineering Princess Sumaya University for TechnologyAmman11941Jordan

In recent years,researchers in handwriting recognition analysis relating to indigenous languages have gained significant internet among research *** recent developments of artificial intelligence(AI),natural language processing(NLP),and computational linguistics(CL)find useful in the analysis of regional low resource *** lexical task participation might be elaborated to various applications in the *** is apparent from the availability of effective machine recognition models and open access handwritten *** language is a commonly spoken Semitic language,and it is written with the cursive Arabic alphabet from right to *** handwritten Character Recognition(HCR)is a crucial process in optical character *** this view,this paper presents effective Computational linguistics with Deep Learning based Handwriting Recognition and Speech Synthesizer(CLDL-THRSS)for Indigenous *** presented CLDL-THRSS model involves two stages of operations namely automated handwriting recognition and speech ***,the automated handwriting recognition procedure involves preprocessing,segmentation,feature extraction,and ***,the Capsule Network(CapsNet)based feature extractor is employed for the recognition of handwritten Arabic *** optimal hyperparameter tuning,the cuckoo search(CS)optimization technique was included to tune the parameters of the CapsNet ***,deep neural network with hidden Markov model(DNN-HMM)model is employed for the automatic speech *** validate the effective performance of the proposed CLDL-THRSS model,a detailed experimental validation process takes place and investigates the outcomes interms of different *** experimental outcomes denoted that the CLDL-THRSS technique has demonstrated the compared methods.

关键词： Computational linguistics handwriting character recognition natural language processing indigenous language