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| 1 | 基于离散元法的旋耕过程土壤运动行为分析显示文摘土壤与耕作部件间的相互作用规律是设计和选用土壤耕作部件的基础。研究土壤和耕作部件间的相互作用规律就是要研究耕作部件对土壤产生的作用和它们之间的作用力,首先必须探讨耕作部件工作时土壤运动规律和施加于土壤的作用力。为此本文建立基于离散元方法的旋耕工作模型;对比分析实验与仿真的土壤位移:在土槽实验中采用示踪块方法测量土壤位移,仿真中通过追踪表层土壤颗粒的运动获得仿真位移;利用实验和仿真数据对土壤位移和运动机理进行分析。结果表明:土壤水平和侧向位移都随着转速增加呈现增加的趋势;土壤的水平运动位移总是大于同转速下的侧向位移。浅层土壤颗粒的运动位移最大,中层土壤次之,深层土壤最小。较深位置的土壤,距离旋转中心越近的土壤颗粒水平位移和侧向位移越大。在旋耕刀切土范围内的土壤,有向相反方向运动趋势的浅、中、深层颗粒比例分别为26.2%、72.1%、48.4%。在水平力作用下,大部分土壤颗粒随着旋耕刀切土有向后运动的行为;土壤在开始时刻的侧向受力和侧向运动方向,由颗粒的侧向位置是否偏离侧切刃轴线决定,位于侧切刃轴线左侧的颗粒,则其侧向力向左,反之亦然;土壤在垂直方向先随着刀具入土向下运动,然后滑出刀刃边界被抛起。本文建立的仿真模型得到的土壤水平位移和侧向位移与相应实验值的误差为24.9%和15.3%。本文运用离散元法进行旋耕过程中土壤宏观和细观运动行为的分析,有助于理解旋耕刀与土壤的相互作用机理,为旋耕机械的设计与优化提供理论依据。 | 方会敏 姬长英 Farman Ali Chandio 郭俊 张庆怡 Chaudhry Arslan | 2016 | 农业机械学报2016，47，3： | 110 |
| 2 | 秸秆分拨引导式玉米免耕防堵机构设计与试验显示文摘为解决免耕播种机麦茬地作业的拥堵问题,在拨抛式防堵装置的基础上提出秸秆分拨引导的防堵设计思路,设计了阿基米德螺线型防堵机构。该装置可引导秸秆攀升,实现层叠堆积,缓解秸秆平行拨离苗带时造成的秸秆局部集中,从而实现有效防堵。运用离散元分析软件EDEM 2.7,建立了秸秆土壤防堵机构相互作用的仿真模型,分别对单个目标秸秆和秸秆群体进行运动追踪,验证了分拨引导和层叠堆积理念。对试验样机进行了田间性能试验和作业参数优选试验,结果表明:在播种过程中,阿基米德螺线型防堵机构作业顺畅,未发生中、重度堵塞及晾籽;防堵机构最佳工作参数为前进速度7 km/h、转速600 r/min,此时秸秆清除率最高,为92.6%。本文设计的防堵机构性能优于前期课题组设计的防堵机构和某商品化防堵机构。 | 牛萌萌 方会敏 CHANDIO F A 史嵩 薛艳芳 刘虎 | 2019 | 农业机械学报2019，50，8： | 13 |
| 3 | 小麦茎秆力学性能的国内外研究显示文摘小麦是我国主要粮食经济作物。本文对其茎秆的拉伸、剪切、弯曲、压缩等力学性能的研究进展进行了简要回顾,对现有研究存在的不足进行了简要分析。国内外的相关研究均忽略了小麦茎秆上鞘的存在对小麦茎秆力学性能的影响,鲜有文献分析小麦茎秆的力学性质与机具的相互作用。将小麦茎秆力学性能与现有的仿真分析技术结合,将有利于小麦茎秆力学性能的发挥及农业机械的设计与优化。 | 方会敏 姬长英 张庆怡 Farman Ali Chandio | 2014 | 中国农机化学报2014，35，6： | 6 |
| 4 | Mechanical strength of wheat grain varieties influenced by moisture content and loading rate显示文摘Mechanical shear resistance of wheat grain is a significant concern for the designers and researchers related to the design of threshing,handling and processing machinery of the field crops.The grain mechanical properties directly affect the machine geometry and its operational parameters.The present study was carried out to determine the shear resistance of five wheat varieties(Locally names;TD-02,Sindhu-1105,Benazir,China and SKD-118)influenced by moisture content(16.7%,18.7%and 19.5%)and loading rate(3 mm/s,6 mm/s and 9 mm/s).However,some physio-dimensional properties(length,width,thickness,slenderness ratio,surface area and sphericity)were obtained at different moisture contents.The results showed that the shear resistance reduced by increasing the moisture content and loading rate.The average shear resistance decreased from 10.45 N to 3.74 N for 3-9 mm/s loading rate at moisture content of 16.7%to 19.5%.Thus,the maximum correlation(r=0.905)of shear resistance obtained at 16.7%,whereas minimum correlation(r=0.692)obtained at 19.5%.The shear resistance of wheat grain was highly significant(p<0.05)at 9 mm/s for 19.5%.Shear resistance decreased with an increase in the moisture content in the grain whereas deformation is increasing with the increase of moisture content.However,the maximum bulk density of wheat grain obtained at 19.5%for SKD-118,while the minimum obtained at 16.7%for TD-02.It is recommended that the design and modification of wheat grain processing equipment should be executed on the physio-mechanical properties of grain varieties. | Yaoming Li Farman Ali Chandio Zheng Ma Imran Ali Lakhiar Abdul Razaque Sahito Fiaz Ahmad Irshad Ali Mari Umer Farooq Muhammad Suleman | 2018 | International Journal of Agricultural and Biological Engineering2018，11，4： | 4 |
| 5 | Livestock production and population census in Pakistan:Determining their relationship with agricultural GDP using econometric analysis显示文摘Livestock is a subsector of Pakistan agriculture which contributes approximately 56%of value addition in agriculture and nearly 11%to the gross domestic product(GDP).Livestock production makes a major contribution to agriculture value added services.In order to highlight the actual performance of livestock production and livestock and poultry products,the study explored the relationship between agricultural GDP and livestock product output,including milk,beef,mutton,poultry meat,eggs,wool,hair,skins,hides and bones,in Pakistan over the 35 year period from 1980 to 2015.Time series data were collected from the National Food Security and Research,the Economic Survey of Pakistan and the Pakistan Bureau of Statistics(various publications).Livestock data were analysed using the ordinary least squares(OLS)method and the Augmented Dickey-Fuller(ADF)test,and the results were interpreted using the Johansen co-integration test.Our study found that the output of milk,fat,eggs,bones and mutton has a positive,significant relationship to the agricultural GDP of Pakistan,while the output of beef,poultry meat,wool,hair,skins and hides has a negative,insignificant relationship to the agricultural GDP of Pakistan.Therefore,the study suggests that the government of Pakistan initiates new funding schemes for the development of the livestock sector. | Abdul Rehman Luan Jingdong Abbas Ali Chandio Imran Hussain | 2017 | Information Processing in Agriculture2017，4，2： | 3 |
| 6 | Big-Data Processing Techniques and Their Challenges in Transport Domain显示文摘This paper describes the fundamentals of cloud computing and current big-data key technologies. We categorize big-data processing as batch- based, stream- based, graph- based,DAG-based, interactive-based, or visual-based according to the processing technique. We highlight the strengths and weaknesses of various big-data cloud processing techniques in order to help the big-data community select the appropriate processing technique. We also provide big data research challenges and future directions in aspect to transportation management systems. | Aftab Ahmed Chandio Nikos Tziritas Cheng-Zhong Xu | 2015 | ZTE Communications2015，13，1： | 3 |
| 7 | Towards adaptable and tunable cloud-based map-matching strategy for GPS trajectories显示文摘智慧城市为智能交通管理和交通网络智能应用的发展提供了巨大推动力。近来,智能交通系统(Intelligent transportation systems,ITSs)和移动位置服务(Location-based services,LBSs)也成为了研究领域的热点。交通领域数据量在快速不断增长,云计算在巨量数据的存储、接入、管理和处理方面有着巨大作用。交通领域相当比例的数据为GPS数据,此类数据具有非频繁、含噪声等特性,这使得维护基于GPS的实时交通软件的服务质量较为困难。在诸多智能交通系统应用中,地图匹配处理起着将GPS观测点准确排列于路网中的关键作用。考虑到准确性时,地图匹配策略的性能由两个连续的GPS观测点间的最短路径决定;另一方面,处理最短路径查询(Processing shortest path queries,SPQs)耗费着较高计算量。现有的地图匹配技术采用固定参数(固定的候选点数量,固定的误差圆半径)的办法,这可能导致确认线路分段时产生不确定性,也可导致低精度结果(或需进行大量SPQ处理以保证精度)。此外,由于采样错误的存在,较高采样时间(大于10 s)内的GPS数据常含有冗余数据,这也导致需要额外的SPQ处理。由于SPQ处理导致的高运算量问题,现有的地图匹配策略并不能实现实时应用。在本文中,我们提出一种实时地图匹配方法(Real-time map-matching,RT-MM)。该方法以云计算为基础,是一种全自适应地图匹配策略,能够应对实时GPS轨迹地图匹配中SPQ处理的关键问题。本研究还通过基于虚拟数据和实际数据的仿真,对所述方法与现有方法的性能进行了比较。 | Aftab Ahmed CHANDIO Nikos TZIRITAS Fan ZHANG Ling YIN Cheng-Zhong XU | 2016 | Frontiers of Information Technology & Electronic Engineering2016，17，12： | 2 |
| 8 | Determinants of Adoption of Improved Rice Varieties in Northern Sindh, Pakistan显示文摘Adoption of certified and improved high-yielding crop varieties is important avenue for increasing agricultural productivity and improving the living standard of the farmers in developing countries. The main objective of the current study was to examine factors affecting adoption of improved rice varieties by smallholder farmers in Northern Sindh, Pakistan. The random sampling technique was used to collect data from 220 smallholder rice farmers through the face to face interview. Data were analyzed using descriptive statistics and probit regression model. The empirical results showed that year of education(P ≤ 0.093), farming experience(P ≤ 0.043), soil quality(P ≤ 0.077), farm machinery ownership(P ≤ 0.000), access to market information(P ≤ 0.055) and contact with extension agents(P ≤ 0.006) had significantly positive influence on adoption of improved rice variety, while age(P ≤ 0.053) had significantly negative effect. | Abbas Ali CHANDIO JIANG Yuansheng | 2018 | Rice science2018，25，2： | 2 |
| 9 | Effects of different irrigation frequencies and incorporation of rice straw on yield and water productivity of wheat crop显示文摘The current rapid increase in irrigation water consumption is considered unsustainable and threatens the world food production.Therefore,it is mandatory to promote modern techniques and to manage existing conventional irrigation methods.The present study was attempted to determine the effects of different irrigation frequencies and rice straw incorporation rates on yield and water productivity of the wheat crop.The experiment was arranged with randomize complete block design involving nine treatments(RS 0 I 7,RS 0 I 15,RS 0 I 22,RS 1 I 7,RS 1 I 15,RS 1 I 22,RS 2 I 7,RS 2 I 15 and RS 2 I 22)under three replications.Results exposed that the incorporation of rice straw with different irrigation frequencies significantly improved physico-chemical properties of soil.Moreover,soil bulk density,infiltration rate,pH,electrical conductivity significantly decreased and soil porosity significantly increased under all treatments.Furthermore,maximum crop yield and crop water productivity of 7706.4 kg/hm 2 and 1.92 kg/m 3 respectively were found under RS 1 I 15 treatment.Based on experimental results it can be concluded that irrigation frequency and incorporation of rice straw had significant effects on the physico-chemical properties of soil,total grain yield and water productivity of the wheat crop.However,this study suggested that the wheat crop yield and water productivity could be increased by incorporating 1 t/hm 2 rice straw with 15 d of irrigation frequency. | Mazhar Hussain Tunio Jianmin Gao Mashooque Ali Talpur Imran Ali Lakhiar Farman Ali Chandio Sher Ali Shaikh Kashif Ali Solangi | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 2 |
| 10 | 植保无人飞机作业参数对田外除草靶标区内外雾滴沉积规律的影响显示文摘雾滴大小、气象条件和施药装备的作业参数对雾滴的覆盖范围、靶标的吸附性能有影响。无人飞机(UAV)是目前有助于高效喷雾的现代施药技术装备。然而作业参数对靶标区和脱靶区的影响依然尚待确定。开展了田间试验并运用沉积扫描软件测定了在田外除草中不同飞行高度(2 m和3 m)和飞行速度(2 m/s和3 m/s)下雾滴的沉积量、覆盖密度、覆盖率和雾滴直径。结果表明,当无人飞机在处理T_(1)中以2 m/s速度、2 m高度飞行时,靶标区域平均沉积量最高,为2.29μL/cm^(2),飞行航线中央0点位置的覆盖率达到36.19%。处理T_(1)、T_(2)、T_(3)和T_(4)在飞行航线中央的雾滴谱相对宽度分别为0.70、1.01、1.03、1.05。处理T_(1)体积中值直径(VMD,也即D_(v0.5))最大,为448.75μm;而处理T_(4)的D_(v0.5)最小,为238.95μm。单旋翼无人飞机在脱靶区的沉积量几乎可以忽略不计。本研究为无人飞机运营商、农民和生产企业提供了参考,从而优化航空植保技术在除草上的应用。 | Fiaz Ahmad 邱白晶 董晓娅 马靖 黄鑫 Shibbir Ahmed Farman Ali Chandio 蔡晨(译) | 2021 | 中国农机化学报2021，42，8： | 2 |
| 11 | Simulation of ground water pollution 显示文摘 | Chandio B A Mughal A Q Chandio S M | 1984 | Mehran University Research Journal of Engineering and Technology1984，3，2： | 1 |
| 12 | Computer Application in Routing of Road UsingLeast-cost Path Analysis in Hillside Development显示文摘 | Chandio I A | 2012 | ResearchJournal of Environmental and Earth Sciences2012，4，10： | 1 |
| 13 | Factors influencing the successful completion of laparoscopie cholecystectomy显示文摘 | Chandio A Timmons S Majeed A | 2009 | JSLS2009，13，4： | 1 |
| 14 | Effects of droplet size and spray interval on root-to-shoot ratio,photosynthesis efficiency,and nutritional quality of aeroponically grown butter head lettuce显示文摘The proper selection of the atomizer(droplet size)and nutrient solution spray interval is one of the most important factors to be investigated in aeroponics system for sustainable agriculture.The aim of this study was to research the effects of four aeroponics atomizing nozzles(one air-assisted;A_(1),two air-less;A_(2) and A_(3),and one ultrasonic fogger;A_(4))with droplet sizes of 11.24μm,26.35μm,17.38μm,and 4.89μm,respectively,four spray intervals(15 min(I_(1)),30 min(I_(2)),45 min(I_(3))and 60 min(I_(4)))at a 5 min of constant spray time by atomizing the Hoagland’s nutrient solution on growth,root-to-shoot ratio,photosynthesis characteristics,pigments,and nutritional quality of the aeroponically grown lettuce.The experimental results demonstrated that in A_(1) atomizer and I_(2) interval,the growth,photosynthesis efficiency,chlorophyll,carotenoids,and nutritional values of the lettuce were significantly higher compared to that grown in A_(2) and A_(3) atomizers at all spray intervals.The shoot developments were more constrained than root,prominent to the alteration of root-to-shoot ratio(fresh and dry)in the influence of different droplet sizes and spray intervals.Moreover,the plants did not grow well in A_(4) atomizer associated with proposed spray intervals.The results disclosed that there was an obvious interaction between droplet sizes(atomizers)and spray intervals for growth,the ratio of root to shoot,photosynthesis efficiency,pigments,and nutritional quality of the aeroponically grown lettuce.This research study increases the awareness of the proper droplet size(atomizer)and the regulation of nutrient solution spray interval for leafy vegetables grown in an aeroponics system. | Mazhar Hussain Tunio Jianmin Gao Waqar Ahmed Qureshi Sher Ali Sheikh Jiedong Chen Farman Ali Chandio Imran Ali Lakhiar Kashif Ali Solangi | 2022 | International Journal of Agricultural and Biological Engineering2022，15，1： | 1 |
| 15 | Factors influencing the successful completion of laparoscopic cholecystectomy显示文摘 | Chandio A Timmons S Majeed A | 2009 | JSLS2009，13，4： | 1 |
| 16 | Synthesis, Crystal Structure and Antimicrobial Activity of {[Bis(pyridine-κN)bis(3,5-dinitrosalicylato κ-O,O')Zn(Ⅱ)][bis(pyridine-κN)Zn(Ⅱ)]}显示文摘A novel {[bis(pyridine-κN)bis(3,5-dinitrosalicylato κ-O,O')Zn(Ⅱ)][bis(pyridine-κN)Zn(Ⅱ)]}(C_(34)H_(24)N_8O_(14)Zn_2) was synthesized by a self-assemble method at room temperature. The molecular structure was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system, space group P2_1/n with a = 12.2156, b = 13.5696, c = 22.5602 ?, β = 90.061o, Z = 4 and V = 3739.6(3) ?~3. The new 1D binuclear coordination polymer {[bis(py-κN)bis(3,5-dinitrosal κ-O,O′) Zn(Ⅱ)][bis(py-κN)Zn(Ⅱ)]} resulted from two different types of moieties. The polymer [bis(py-κN)bis(3,5-dinitrosal κ-O,O′)Zn(Ⅱ)] unit is connected with [bis(py-κN) Zn(Ⅱ)] by zigzag topology. One zinc(Ⅱ) cation has a six-fold coordination environment, in which the metal atom is connected with four oxygen atoms of two 3,5-dinitrosalicylic acids to form equatorial bonds and two nitrogen atoms of pyridine to generate the axial bonds. Other four-fold nucleus contain two Zn–O bonds from different 3,5-dinitrosalicylic acids and two bonds with the Natom of pyridine. Antimicrobial assay results indicated that the compound showed moderate activities against different bacterial and fungal strains. | CHANG Fouzia MEMON Najma AHMED Muhammad Naeem TAHIR Muhammad Nawaz MEMON Shahabuddin CHANG Abdul Sattar BHANGER Muhammad Iqbal CHANDIO Anwer | 2016 | Chinese Journal of Structural Chemistry2016，35，5： | 1 |
| 17 | Overview of the aeroponic agriculture-An emerging technology for global food security显示文摘Traditionally,crops are cultivated in soil-based open field systems.Seasonality,environmental degradation,urbanization,and food security issues have replaced open-field systems with modern plant production systems.Soilless culture is one of the modern plant production systems,which involves much higher use of available resources.The presented study provides information about currently accessible soilless systems and discussed the aeroponic system.Compared to other soilless systems,aeroponic reduce water usage through continuous water circulation.However,the aeroponic is not entirely implemented among local farmers,and very few farmers have adopted the system due to the lack of research and technical information available in the literature.Therefore,this study was planned to provide information about the development and maintenance tasks required for practicing the aeroponic system.This study could provide knowledge to the researchers,farmers,and those people interested in practicing the aeroponic system. | Imran Ali Lakhiar Jianmin Gao Tabinda Naz Syed Farman Ali Chandio Mazhar Hussain Tunio Fiaz Ahmad Kashif Ali Solangi | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 1 |
| 18 | Simulation of ground water pollution显示文摘 | Chandio B A Mughal A Q Chandio S M | | 0，，02： | 1 |
| 19 | Effect of straw length and rotavator kinematic parameter on soil and straw movement by a rotary blade 显示文摘 | FANG Huimin ZHANG Qingyi CHANDIO F A | 2016 | Engineering in Agriculture Environment and Food2016，9，3： | 1 |
| 20 | 液氨预处理工艺对五节芒酶解糖化效果的影响显示文摘为提高五节芒可发酵单糖的产量,采用液氨对其进行预处理。选用预处理温度T、五节芒含水率M、驻留时间t和液氨用量比k为变量因素,在试验范围内T(70~170℃)、M(20%~200%)、t(5~30 min)、k(0.5~5.0)通过对各因素的不同取值,分析上述因素对五节芒酶解效果的影响。结果表明:在T=130℃、M=80%、t=10 min、k=2.0的条件下预处理,五节芒72 h的葡聚糖和木聚糖酶解率分别为72.1%和82.5%,即100 g干基原材料可获得可发酵单糖55.8 g,是未经预处理样品酶解率的3.65倍。因此,液氨预处理能够有效促进五节芒的酶解单糖转化率。 | 彭何欢 邵千钧 Farman Ali Chandio 赵超 李彬 马中青 | 2016 | 农业机械学报2016，47，7： | 1 |
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