Results 31 to 40 of about 77,572 (263)
The effect of heat losses and heat transfer coefficient on the efficiency of the solar air heater collector [PDF]
E3S Web of Conferences, 2023 In this Article developed the heat balance equations for a solar air heater with a concave air pipe absorber, calculating the heat wastes lost from the barrier structures of the device.
Abdukarimov Bekzod +4 more
doaj +1 more source
Concavity of Utility, Concavity of Welfare, and Redistribution of Income [PDF]
SSRN Electronic Journal, 2003 The marginal social value of income redistribution is understood to depend on both the concavity of individuals’ utility functions and the concavity of the social welfare function. In the pertinent literatures, notably on optimal income taxation and on normative inequality measurement, it seems to be accepted that the role of these two sources of ...
openaire +3 more sources
Bioengineering, 2022 (1) Background: Scoliosis has the mechanical characteristic of asymmetric stress distribution, which is one of the reasons for the aggravation of scoliosis. Bracing therapy is the best treatment for AIS, but it is difficult and costly to operate.
Linjie Zhang +6 more
doaj +1 more source
The mathematical model of the precessional gear and the process of generation of inclined teeth [PDF]
Journal of Engineering Science (Chişinău), 2020 The paper deals with the development of precessional gears with toothed gearing with concave-concave contact of inclined teeth. In order to increase the bearing capacity and the mechanical efficiency of the precessional gear, the contact of the teeth is ...
BOSTAN, Viorel +3 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
Advanced Functional Materials, EarlyView.We report a unique color‐sensing phenomenon of a TiO2/SbSI:Sb2S3 device utilizing X‐ray absorption. Based on the revealed penetration and adsorption of water onto TiO2, we successfully improved the color response speed and sensitivity by incorporating a hydrophilic polymer interlayer, thereby opening up opportunities for photodetection applications ...
Tai Kobayashi +9 more
wiley +1 more source
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
doaj +1 more source