نتایج جستجو برای: machinery possession and utilization

تعداد نتایج: 16848000  

2017
Claudio A. Casal Rubén Maneiro Toni Ardá Francisco J. Marí José L. Losada

Possession time in football has been widely discussed in research but few studies have analyzed the importance of the field area in which possession occurs. The objective of this study was to identify the existence of significant differences in the field zone of ball possession between successful and unsuccessful teams and to acknowledge if the match status modulates the possession model. To th...

Land leveling is one of the most important steps in soil preparation and cultivation. Although land leveling with machines requires considerable amount of energy, it delivers a suitable surface slope with minimal soil deterioration as well as damage to plants and other organisms in the soil. Notwithstanding, in recent years researchers have tried to reduce fossil fuel consumption and its delete...

2001
Linlin Ge Chris Rizos Shaowei Han Howard Zebker

Compared to opencut mining, underground coal mining is more common in Australia due to its lesser impact on the environment. Although there are several underground mining methods, such as the longwall, pillar, bord, and miniwall, longwall mining is the most commonly used method due to its high efficiency. However, longwall mining does lead to significant ground subsidence. Mining subsidence is ...

مرتضی الماسی, , نعیم لویمی, ,

This study aims to evaluate mechanization quality and quantity for improvement purposes. Northern Ahwaz including five districts with a total area of 286,800 hectares was selected for evaluation. The current potentials for scientific mechanization and suitable production methods in the study area were identified within the framework of a field study. In addition to a holistic study of the area ...

2011
Franz Holzleitner Karl Stampfer Rien Visser

Nacrtak Operating forest machines is not only expensive but accurate monitoring of economic variables can be very difficult. Detailed machine data capture of economic variables within a forest enterprise can be used to support accurate decision making processes, especially costing for new investments. The objectives of this study were to analyze economic variables of forest machinery based on l...

Journal: :ماشین های کشاورزی 0
عباس روحانی حسین غفاری رضا فعله گری خسرو محمدی قرمز گلی حسن مسعودی

farm machinery managers often need to make complex economic decisions on machinery replacement. repair and maintenance costs can have significant impacts on this economic decision. the farm manager must be able to predict farm machinery repair and maintenance costs. this study aimed to identify a regression model that can adequately represent the repair and maintenance costs in terms of machine...

Journal: :iranian journal of psychiatry 0
fahimeh mianji division of social & transcultural psychiatry, mcgill university, montreal, canada yousef semnani department of psychiatry, imamhossein hospital, shahid beheshti university of medical sciences, tehran, iran

zār is the term used to describe a form of spirit possession common in northern african, eastern african, and some middle-eastern societies. although these regions share some cultural similarities arising from their history of slavery, in these places, zār varies in prevalence, clinical characteristics, and social context. based on a selective review of the literature, this paper looks at the p...

Journal: :Journal of Religious and Political Practice 2016

Journal: :journal of rangeland science 2010
a. a. ameri a. a. sanadgol

this study was conducted to compare the methods of seed bedpreparation in rangelands of khash region in sistan and baluchestan province iniran. a split plot design was conducted based on randomized complete blockdesign with three replications in 1999. five seed bed preparation methods wereused as main plot as: 1) seed sown by passing livestock. 2) seed sown machinery.3) seeds sown as drilled in...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید