Results 91 to 100 of about 185,875 (301)

Pressure of the Wheels of Grain Transfer Bins on the Soil

open access: yesMachinery and Equipment for Rural Area
The size and mass characteristics of 22-50 m3 grain transfer bins were analyzed. The parameters of the tires used, the values of the vertical impacts on the tractor coupling device and the bunker support wheels on the soil are given. The maximum pressures of wheel vehicles on the soil are compared with the regulated permissible values.
V.I. Skorlyakov   +2 more
openaire   +1 more source

A Learning Algorithm based on High School Teaching Wisdom [PDF]

open access: yes, 2010
A learning algorithm based on primary school teaching and learning is presented. The methodology is to continuously evaluate a student and to give them training on the examples for which they repeatedly fail, until, they can correctly answer all types of
Philip, Ninan Sajeeth
core  

Parallel Electrical Integration of Photo Bio Electrochemical Systems (photo‐BESs): Performance Gains and Load Dependency

open access: yesAdvanced Materials Technologies, EarlyView.
Parallel wiring of bioelectrochemical devices with conventional generators unexpectedly boosts output. A biophotovoltaic paired with a solar cell delivers up to 50% more power at low loads than their separate contributions; a plant microbial fuel cell shows similar current gains.
Valeria Marsaglia   +4 more
wiley   +1 more source

Draft forces prediction model for standard single tines by using principles of soil mechanics and soil profile evaluation

open access: yesLandtechnik, 2017
This paper explains a model to predict the draft force acting on varying standard single tines by using principles of soil mechanics and soil profile evaluation.
Amer Khalid Ahmed Al-Neama   +1 more
doaj   +1 more source

Slow carbon and nutrient accumulation in trees established following fire exclusion in the southwestern United States. [PDF]

open access: yes, 2016
Increasing tree density that followed fire exclusion after the 1880s in the southwestern United States may have also altered nutrient cycles and led to a carbon (C) sink that constitutes a significant component of the U.S. C budget.
Covington, W Wallace   +4 more
core   +2 more sources

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

3D Printed Omniphobic Slippery Liquid Infused Porous Surfaces for Low Surface Tension Repellency

open access: yesAdvanced Materials Technologies, EarlyView.
A 3D printing strategy fabricates omniphobic slippery liquid‐infused porous structures with lubricant reservoirs and interconnected microchannels. A post‐printing surface treatment modifies the porous surface to ensure compatibility with the infused fluorinated lubricant.
Noa Trink, Shlomo Magdassi
wiley   +1 more source

Modern methods of disease control in florist and nursery crops

open access: yesCalifornia Agriculture, 1967
A commercial soil sterilization unit for either bin or potting bench, with centrifugal blower for diluting the steam. The mixture is injected into the plenum chamber, under the soil being treated.
K Baker, S Smith
doaj  

Net traction of a driven wheel as affected by slippage, velocity and wheel load

open access: yesJournal of the Saudi Society of Agricultural Sciences, 2015
The objective was to assess the effect of velocity at three levels (i.e. 0.8, 1 and 1.2 m/s), slippage at three levels (i.e. 10, 12 and 15%) and three levels of wheel load (i.e.
Hamid Taghavifar, Aref Mardani
doaj   +1 more source

Organic Agriculture in Saudi Arabia - Sector Study 2012 [PDF]

open access: yes, 2012
This publication compiles the facts and figures of the organic sector in Saudi Arabia. It is a valuable resource for local stakeholders and interested trading companies. The publication is resulting from a collaboration between GIZ (Deutsche Gesellschaft
Al Ghamdi, Ayman   +4 more
core  

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