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北亚热带红壤丘陵区3种土地利用方式下CH_4通量及其影响因素

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生态环境学报 2015年第9期24卷 1434-1440页

作者：田亚男聂文婷张水清 muhammad shaaban 吕昭琪殷欣林杉华中农业大学资源与环境学院//农业部长江中下游耕地保育重点实验室湖北武汉430070 长江科学院水土保持研究所湖北武汉430010 河南省农业科学院植物营养与资源环境研究所河南郑州450002

以北亚热带红壤丘陵区林地、茶园、菜地为对象,采用静态箱-气相色谱法,对3种土地利用方式下CH4通量进行了研究,同时测定了土壤温度、含水量和无机氮含量。旨在探索不同土地利用方式下CH4"源"和"汇"的功能,对评估不同土地利用方式对全球... 详细信息

以北亚热带红壤丘陵区林地、茶园、菜地为对象,采用静态箱-气相色谱法,对3种土地利用方式下CH4通量进行了研究,同时测定了土壤温度、含水量和无机氮含量。旨在探索不同土地利用方式下CH4"源"和"汇"的功能,对评估不同土地利用方式对全球气候变化的贡献具有重要意义。结果表明,不同土地利用方式下土壤甲烷平均通量有显著差异,分别为:林地-15.44μg·m-2·h-1,茶园-1.49μg·m-2·h-1,菜地7.11μg·m-2·h-1;菜地土壤甲烷平均通量最高,茶园其次,林地最低,CH4年累积通量分别为0.52、-0.31和-1.46 kg·hm-2,菜地土壤以排放CH4为主,而茶园和林地土壤是CH4的汇。茶园和菜地土壤CH4通量呈一定的季节性变化,春、秋季CH4通量较高。林地CH4吸收通量与土壤湿度呈显著的负相关关系(P<0.05),且当土壤湿度(WFPS)高于70%时,林地土壤才以排放CH4为主;而茶园和菜地土壤CH4吸收通量与土壤含水量无显著相关关系。土壤CH4通量与土壤温度之间未呈显著的相关关系。不同土地利用方式下土壤CH4排放通量与铵态氮含量呈显著的负相关关系(P<0.05),而与硝态氮含量未呈显著的相关性。

关键词：甲烷通量菜地茶园红壤丘陵区

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生物质炭调控药用植物连作障碍的研究进展

福建农业学报 2024年第1期39卷 105-114页

作者：高华涂昊泽赵钰湲孔雯夏文建王飞儿 muhammad shaaban 林杉华中农业大学资源与环境学院/农业农村部长江中下游耕地保育重点实验室湖北武汉430070 中国电建集团昆明勘测设计研究院有限公司云南昆明650051 江西省农业科学院土壤肥料与资源环境研究所江西南昌330200 河南科技大学农学院河南洛阳471000

我国是中药材种植大国,但不合理的栽培方式和管理措施导致中药材连作障碍在种植区普遍存在,造成药材减产变质、道地产区转移、资源保护与利用不协调等,严重影响药用植物生长发育。因此对中药材连作土壤进行修复是解决中药材连作障碍的... 详细信息

我国是中药材种植大国,但不合理的栽培方式和管理措施导致中药材连作障碍在种植区普遍存在,造成药材减产变质、道地产区转移、资源保护与利用不协调等,严重影响药用植物生长发育。因此对中药材连作土壤进行修复是解决中药材连作障碍的一个关键措施。生物质炭一般呈碱性,是一种良好的土壤改良剂,能够增加土壤养分、改良酸化土壤、提升植物品质,近年来得到广泛关注与应用,因此利用生物质炭作为调理剂来缓解中药材连作障碍具有一定潜力。本文针对我国中药材连作障碍的可能成因及潜在危害,分析生物质炭在解决药用植物连作造成的土壤理化性质改变、土壤微生物区系改变、化感自毒危害等问题上的作用,并对生物质炭在药用植物生产上的应用潜力进行展望。

关键词：连作障碍药用植物生物质炭土壤理化性质化感自毒作用

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秸秆还田对土壤微生物影响的研究进展

中国农学通报 2014年第29期30卷 175-183页

作者：伍玉鹏彭其安 muhammad shaaban 郝蓉胡荣桂华中农业大学资源与环境学院武汉430070

秸秆还田是有效利用秸秆资源的重要途径。土壤微生物在秸秆腐解和营养元素释放过程中具有举足轻重的作用,而另一方面秸秆本身也会对土壤微生物产生较大的影响。秸秆还田概况入手,从不同的秸秆还田方式、外源添加物、不同的秸秆还田量、... 详细信息

秸秆还田是有效利用秸秆资源的重要途径。土壤微生物在秸秆腐解和营养元素释放过程中具有举足轻重的作用,而另一方面秸秆本身也会对土壤微生物产生较大的影响。秸秆还田概况入手,从不同的秸秆还田方式、外源添加物、不同的秸秆还田量、耕作制度和转基因秸秆几个方面综述了目前国内外秸秆还田对土壤微生物影响的研究报告。目前已有文献的研究大多集中在土壤微生物量方面,但并没有形成一致的观点,且缺乏对土壤微生物长期动态和功能群的研究。据此认为应在今后的研究中加强以下几个方面:以更为先进的方法结合多种研究手段揭示秸秆还田过程中土壤微生物的实际情况;开展关于秸秆分解整个过程中土壤微生物的动态变化研究;以微生物功能群为单位研究秸秆还田对微生物的影响;采用多种不同的方法和长期的观察以研究转基因作物秸秆还田后对土壤微生物生态的影响。

关键词：秸秆还田土壤微生物影响综述

Parking detection method using quadtree decomposition analysis

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第4期9卷 645-653页

作者： Khaled shaaban Houweida Tounsi Department of Engineering Utah Valley UniversityOremUT 84058USA Blizzard Entertainment San DiegoCA 90405USA

Searching for available parking spaces can be a painful experience for drivers due to driving around until finding a vacant *** study proposes a new method to automatically detect available parking *** proposed system identifies empty parking spaces using grayscale images obtained from any type of video *** method was found to successfully identify parking availability under different conditions and *** method was tested using real-life data and achieved a detection rate of 99.7%.This method can be applied in real-time to monitor parking availability and guide drivers to empty *** method has several advantages,including simple algorithms,the use of low-quality black and white images,and simple ***,the system can provide enormous cost savings for locations with existing black and white surveillance cameras instead of replacing existing cameras with new high-quality cameras.

关键词： Traffic engineering Parking detection Smart cities Outdoor parking Image processing Image detection

Optimal FOPID Controllers for LFC Including Renewables by Bald Eagle Optimizer

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Computers, Materials & Continua 2022年第12期73卷 5525-5541页

作者： Ahmed M.Agwa Mohamed Abdeen shaaban M.shaaban Department of Electrical Engineering College of EngineeringNorthern Border UniversityArar1321Saudi Arabia Electrical Engineering Department Faculty of EngineeringAl-Azhar UniversityCairo11651Egypt Department of Engineering Basic Science Faculty of EngineeringMenoufia UniversityShebin El-Kom32511Egypt

In this study,a bald eagle optimizer(BEO)is used to get optimal parameters of the fractional-order proportional-integral-derivative(FOPID)controller for load frequency control(LFC).SinceBEOtakes only a very short time in finding the optimal solution,it is selected for designing the FOPID controller that improves the system stability and maintains the frequency within a satisfactory range at different *** and demonstrations are carried out using *** performance of the BEOFOPID controller is evaluated using a two-zone interlinked power system at different loads and under uncertainty of wind and solar *** robustness of the BEO-FOPID controller is examined by testing its performance under varying system time *** results obtained by the BEOFOPID controller are compared with those obtained by BEO-PID and PID controllers based on recent metaheuristics optimization algorithms,namely the sine-cosine approach,Jaya approach,grey wolf optimizer,genetic algorithm,bacteria foraging optimizer,and equilibrium optimization *** results confirm that the BEO-FOPID controller obtains the finest result,with the lowest frequency *** results also confirm that the BEOFOPID controller is stable and robust at different loads,under varying system time constants,and under uncertainty of wind and solar energies.

关键词： Fractional order PID control load frequency control renewable energy bald eagle optimizer

Spatial hotspot detection using polygon propagation

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International Journal of Digital Earth 2019年第7期12卷 825-842页

作者： Satya Katragadda Jian Chen shaaban Abbady Center for Visual and Decision Informatics(CVDI) University of Louisiana at LafayetteLafayetteLAUSA Informatics Research Institute(IRI) University of Louisiana at LafayetteLafayetteLAUSA Department of Geography University of North AlabamaFlorenceALUSA Center for Advanced Computer Studies(CACS) University of Louisiana at LafayetteLafayetteLafayetteLAUSA

Spatial scan statistics is one of the most important models in order to detect high activity or hotspots in real world applications such as epidemiology,public health,astronomy and criminology applications on geographic *** scan statistic uses regular shapes like circles to detect areas of high activity;the same model was extended to eclipses to improve the *** recent works identify irregular shaped hotspots for data with geographical boundaries,where information about population within the geographical boundaries is *** the introduction of better mapping technology,mapping individual cases to latitude and longitude became easier compared to aggregated data for which the previous models were *** propose an approach of spatial hotspot detection for point data set with no geographical boundary *** algorithm detects hotspots as a polygon made up of a set of triangles that are computed by a Polygon Propagation *** time complexity of the algorithm is non-linear to the number of observations,which does not scale well for larger *** improve the model,we also introduce a MapReduce version of our algorithm to identify hotspots for larger datasets.

关键词： Spatial clustering MapReduce hotspot detection polygon propagation

Prediction and Prevention of Post-hepatectomy Liver Failure:Where Do We Stand?

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Journal of Clinical and Translational Hepatology 2021年第3期9卷 281-282页

作者： Amr shaaban Hanafy Internal Medicine-Gastroenterology and Hepatology Department Zagazig UniversityAsh Sharqia GovernorateEgypt

No standardized description or definition of post-hepatectomy liver failure has been *** based on the degree of rise in serum total bilirubin or prolongation of prothrombin time postoperatively were predictive of shortterm *** to lack of universal definition,however,its prevalence is variable but may reach up to 12%posthepatectomy,according to the definition by International Study Group of Liver Surgery,and or 34%,as in some reports.

关键词： hepatectomy Liver Surgery

Effect of vehicle safety recalls on the perception towards other vehicles from the same country of origin

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第5期6卷 493-503页

作者： Khaled shaaban Amro Maher Anusorn Singhapakdi Department of Civil and Architectural Engineering Qatar University Doha Qatar Beacom School of Business University of South Dakota Vermillion SD 57069 USA Department of Marketing Old Dominion University Norfolk VA 23529 USA

A vehicle safety recall significantly impacts the demand for these specific manufacturer *** effect of this recall on the other manufacturers from the same country of origin(COO) that are not involved in the recall is poorly *** purpose of this study is to examine the impact of a vehicle safety recall on other vehicle brands originating from the same *** study uses a case study related to Toyota recalls and the impact of the crises on the attitudes toward three other Japanese brands-namely,Honda,Nissan,and Mazda.A questionnaire was conducted with 375 participants who are familiar with the *** findings from the questionnaire indicated that product-harm crises have an indirect negative effect on brands from the same ***,brands from the transgressor’s COO should not make the transgressor’s betrayal salient,which might hurt their *** example,if Honda makes the betrayal of Toyota salient through comparative advertising,Honda’s efforts might hurt the company directly through consumers’ image of Japanese *** research should examine the extent to which comparative advertising impacts non-transgressing brands that originate from the same country as the transgressing *** current results suggest that the non-transgressing companies might even assist the transgressing company to recover from such crises if consumers perceive a strong association between the non-transgressing brands and transgressing brands.

关键词： Automotive recalls Vehicle safety Car accidents Vehicle defects Safety ratings

Role of pancreatic juice cytology in diagnosis of high-grade pancreatic intraepithelial neoplasia

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World Journal of Clinical Cases 2025年第10期13卷 59-61页

作者： Hussein Hassan Okasha Mohammed Tag-Adeen Hossam Eldin shaaban Division of Gastroenterology and Hepatology Department of Internal MedicineKasr Al-Aini School of MedicineCairo UniversityCairo 11562Egypt Division of Gastroenterology and Hepatology Department of Internal MedicineQena Faculty of MedicineSouth Valley UniversityQena 83523Egypt Department of Internal Medicine and Gastroenterology National Hepatology and Tropical Medicine Research InstituteCairo 11796Egypt

High-grade pancreatic intraepithelial neoplasia is a challenging diagnosis and itdoes not exhibit mass lesions. It is suspected based on changes in the mainpancreatic duct in magnetic resonance cholangiopancreatography. Sometimesonly an unclear duct shows in magnetic resonance cholangiopancreatographywith no focal strictures and upstream dilatation of the main pancreatic duct. Serialpancreatic juice cytology is valuable in diagnosis of those patients.

关键词： High-grade pancreatic intraepithelial neoplasia Pancreatic cancer Magnetic resonance cholangiopancreatography Endoscopic retrograde pancreatography Pancreatic juice cytology Pancreatic ductal adenocarcinoma