Results 91 to 100 of about 149,009 (297)

Think before you till [PDF]

open access: yes, 2002
Making a tillage management decision for 2003 starts now. The first decision is what tillage, if any, needs to be done after harvest. Because crop residue from harvest is still on top of the soil (and spread evenly from the combine), fall is the best ...
Al-Kaisi, Mahdi   +3 more
core   +2 more sources

Infrared Colloidal Quantum Dot Edge Emitting Lasers Integrated on Silicon

open access: yesAdvanced Optical Materials, EarlyView.
In this work, the first monolithic integration of Pb‐chalcogenide CQDs in an edge‐emitting DFB laser cavity onto a Si/SiO2 substrate has been demonstrated. The optimizations of SiO2 layer thickness, engineering of the grating duty cycle, and implementing λ/4 phase shift resulted in the achievement of spectrally pure, single‐mode lasing at 1650 nm with ...
Hamed Dehghanpour Baruj   +5 more
wiley   +1 more source

Short-Term Effects of Differentiated Tillage on Dry Matter Production and Grain Yield of Autumn and Spring Sown Grain Legumes Grown Monocropped and Intercropped with Cereal Grains in Organic Farming

open access: yesPlant Production Science, 2015
Conservation tillage techniques offer considerably reduced soil erosion and improved soil structure but they are rarely used in organic farming systems due to the potentially increased weed pressure.
Lars Rühlemann   +2 more
doaj   +1 more source

Effects of No-Tillage Production Practices on Crop Yields as Influenced by Crop and Growing Environment Factors [PDF]

open access: yes
This paper evaluated differences between yields of no-tillage compared to conventional or reduced tillage and their associated downside risk. Six crops were evaluated along with how those yields and risks differed by various environmental factors such ...
English, Burton C.   +5 more
core   +1 more source

Resistencia a penetraçao de um latossolo vermelho amarelo do cerrado sob diferentes sistemas de manejo [PDF]

open access: yes, 2008
The intensification of agricultural production systems has caused soil compaction even when soil conservation technologies are adopted. Soil compaction is one of the main problems for farmers, both in no-tillage and in conventional-tillage systems, as ...
Balbino, L.C.   +6 more
core  

Reducing Personalization Time and Energy Cost While Walking Outdoors with a Portable Exosuit

open access: yesAdvanced Robotics Research, EarlyView.
Rapid Real‐World Optimization! An AF‐based human‐in‐the‐loop optimization strategy rapidly personalizes a portable hip extension exosuit for incline walking. Real‐time Bayesian optimization of assistive force significantly reduces metabolic energy—up to 16.2%—while converging in just 3 min 24 s.
Kimoon Nam   +7 more
wiley   +1 more source

"No-Till" Farming Is a Growing Practice [PDF]

open access: yes
Most U.S. farmers prepare their soil for seeding and weed and pest control through tillage—plowing operations that disturb the soil. Tillage practices affect soil carbon, water pollution, and farmers’ energy and pesticide use, and therefore data on ...
Ebel, Robert M.   +2 more
core   +1 more source

No-Tillage in Europe - State of the Art: Constraints and Perspectives [PDF]

open access: yes, 2008
No-tillage in Europe contains a review of developments over the last three decades beginning in the late 1960s. Reasons for attempts to introduce this soil conserving production method are outlined and obstacles affecting the uptake of no-tillage ...
Basch, G.   +3 more
core  

No-till banana planting on crop residue mulch: Effect on soil quality and crop functioning [PDF]

open access: yes, 2010
Introduction. In the French West Indies, farmers generally consider that periodical soil tillage is necessary to increase soil porosity and maintain high yield.
Bouamer, Salah   +4 more
core   +1 more source

Multimodal Actuation and Environment Adaptive Strategies of Bio‐Inspired Micro/Nanorobots in Precision Medicine

open access: yesAdvanced Robotics Research, EarlyView.
An introduction for multidrive and environment‐adaptive micro/nanorobotics: design and fabrication strategies, intelligent actuation, and their applications. Various intelligent actuation approaches—magnetic, acoustic, optical, chemical, and biological—can be synergistically designed to enhance flexibility and adaptive behavior for precision medicine ...
Aiqing Ma   +10 more
wiley   +1 more source

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