Results 41 to 50 of about 142,522 (303)
Аграрная наука Евро-Северо-ВостокаIn modern agriculture, optimization of threshing of leguminous crop seeds is becoming an increasingly important topic. The question is how to improve the threshing process to increase yields and improve seed quality.
Z. A. Godzhaev, A. V. Kolesnikov
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Test and Optimization of Oilseed Rape (Brassica napus L.) Threshing Device Based on DEM
Agriculture, 2022 Gridded concave plate sieves are usually used for threshing operations of grain and oilseed crops. In response to the problems of high threshing loss rate and grain breakage rate when threshing oilseed rape, this research modified the threshing concave ...
Jun Wu +4 more
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Mining reasonable distance of horizontal concave slope based on variable scale chaotic algorithms
Open Physics, 2020 Horizontal concave slope structure is a common mining structure. It is the basis of mining safety to grasp the reasonable mining distance of horizontal concave slope. Therefore, based on variable scale chaotic algorithm, the reasonable mining distance of
Chen Shuzhao, Shang Tao, Han Liu
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SSRN Electronic Journal, 2013 Drilling expenses has increased sharply in recent years. Average meters drilled per day significantly influences exploration costs. Hence it is important to understand the factors that determine meter per day. In this study we analyse the effect of drilling depth on meter per day.
Osmundsen, Petter, Roll, Kristin Helen
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Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
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Cutting mechanism of a special 3D concave-shaped PDC cutter applicable to the Weiyuan shale
Journal of Petroleum Exploration and Production Technology, 2023 The Weiyuan shale gas field faces problems of long drilling cycles and high development costs. Improving the drilling efficiency of polycrystalline diamond compact bits in shale formations will significantly reduce the overall well cost and duration ...
Xiaohua Ke +5 more
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Concavity and perturbed concavity for p-Laplace equations
Journal of Differential EquationsIn this paper we study convexity properties for quasilinear Lane-Emden-Fowler equations of the type $$\begin{cases} -Δ_p u = a(x) u^q & \quad \hbox{ in $Ω$},\\ u >0 & \quad \hbox{ in $Ω$}, \\ u =0 & \quad \hbox{ on $\partial Ω$}, \end{cases}$$ when $Ω\subset \mathbb{R}^N$ is a convex domain.
Gallo M., Squassina M.
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Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures
Advanced Engineering Materials, EarlyView.We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann +2 more
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Personality Neuroscience, 2021 The hollow-mask illusion is an optical illusion where a concave face is perceived as convex. It has been demonstrated that individuals with schizophrenia and anxiety are less susceptible to the illusion than controls. Previous research has shown that the
Vasileios Ioakeimidis +6 more
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Ferroelectricity in Antiferromagnetic Wurtzite Nitrides
Advanced Functional Materials, EarlyView.We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa +3 more
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