نتایج جستجو برای: soil bin

تعداد نتایج: 188435  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی ساری - دانشکده علوم کشاورزی 1391

مهمترین مسأله در علوم کشاورزی و بخصوص ماشین های کشاورزی، افزایش نیروی کششی تراکتورها و فشردگی بهینه خاک هنگام انجام عملیات کشاورزی و حرکت ماشین های کشاورزی روی خاک می باشد. با توجه به اینکه بررسی و تحلیل بیشتر پارامترهای فیزیکی خاک داخل مزرعه کار طاقت فرسایی بوده و مستلزم وجود شرایط اقلیمی مناسب و سایر پارامترهای محدود کننده می باشد، وجود مخزن خاک آزمایشگاهی برای انجام اکثر آزمایشات دینامیکی و ...

Journal: :journal of agricultural science and technology 2010
m. loghavi m. r. khadem

development of sensors to detect the location and depth of hard pans in real time is a major restriction on the application of site specific crop management (sscm). in this study, a soil compaction profile sensor equipped with four horizontal operating penetro-meters for on-the-go sensing and mapping of the location and intensity of hard pans arti-ficially formed in a soil bin was developed and...

Journal: :تحقیقات مهندسی کشاورزی 0
محمد لغوی دانشیار دانشکده کشاورزی دانشگاه شیراز بهرام بحری دانشجوی سابق کارشناسی ارشد دانشکده کشاورزی دانشگاه شیراز

the single wheel tester is an experimental device used to measure wheel forces when studying the relation of soil and wheel in a soil bin or in the field. in the model under development, a special frame holding the test wheel is connected to a loading carriage by two pairs of vertical rails and four rollers to provide a floating connection. by applying a driving torque to the test wheel shaft, ...

Journal: :مهندسی بیوسیستم ایران 0
غلامحسین شاهقلی دانشگاه محقق اردبیلی سیروان حاجی مامندی سایر

for designing tillage implements it would be better to estimate soil forces exerted to the implements. many researches showed that numerical method of discrete element method (dem) is the cheapest and fastest technique for modeling granular material such as soil and especially sandy soil. in this study, paraplow and bentleg tines performance was compared with conventional tine using experimenta...

2012
DAWEI JIN JIANXIN ZHU CHUNHUA ZHANG

In order to study passing ability of lunar rover in lunar soil, the mechanical parameters between lunar wheel and lunar soil should be analyzed. The mechanical parameters can reflect the mechanical relationship between lunar rover wheel and regolith. These parameters include sinkage, drawbar pull, driving torque, motion resistance and slip. In this paper, these parameters are measured by soil b...

2013
R. Nithya A. Velumani S. R. R. Senthil Kumar

The Municipal Solid Waste (MSW) management is a complex service that should be provided with suitable and feasible technologies in developing countries like India. The collection element plays a vital role in the MSW management. Hence, the planning and design of community bins make a greater impact on the environment. In this regard, an application model called Design of Community Storage Syste...

Journal: :International Journal of Current Microbiology and Applied Sciences 2019

Journal: :Environmental pollution 2003
Kristin Van Gestel Joris Mergaert Jean Swings Jozef Coosemans Jaak Ryckeboer

Soil spiked with diesel oil was mixed with biowaste (vegetable, fruit and garden waste) at a 1:10 ratio (fresh weight) and composted in a monitored composting bin system for 12 weeks. Pure biowaste was composted in parallel. In order to discern the temperature effect from the additional biowaste effect on diesel degradation, one recipient with contaminated soil was hold at room temperature, whi...

Journal: :Appl. Soft Comput. 2014
Hamid Taghavifar Aref Mardani

Various methodologies of artificial intelligence have been recently used for estimating performance parameters of soil working machines and off-road vehicles. Due to nonlinear and stochastic features of soil–wheel interactions, application of knowledge-based Mamdani max–min fuzzy expert system for estimation of contact area and contact pressure is described in this paper. Fuzzy logic model was ...

Journal: :International Journal of Current Microbiology and Applied Sciences 2017

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