Results 31 to 40 of about 142,522 (303)

Multi-Pass Stamping Forming a Concave Ring

open access: yesApplied Sciences, 2020
To improve the production quality and efficiency of the concave ring, a multi-pass stamping technology is used to replace the spinning technology to form the concave ring.
Song Zhang   +3 more
doaj   +1 more source

Thermo-Responsive Shape-Memory Effect and Surface Features in Polycarbonate (PC)

open access: yesApplied Sciences, 2017
The influence of programming strain and temperature on the shape memory effect and surface morphology in programmed polycarbonate (PC) samples via uni-axial stretching is investigated.
Xuelian Wu   +3 more
doaj   +1 more source

Shape Optimization of Concave Crossbars to Increase Threshing Performance of Moist Corn Ears

open access: yesAgriculture, 2023
Harvesting of high-moisture corn ears poses a challenge due to the high level of grain damage. In the present study, a series of concaves adapted to moist corn ears threshing was developed and evaluated.
Dainius Steponavičius   +5 more
doaj   +1 more source

The suprapubic deepithelialized inferiorly based random flap designed to fill the tissue deficiency at supraumbilical area to prevent the concave deformity in abdominoplasty

open access: yesTurkish Journal of Plastic Surgery, 2019
Introduction: The most critical tissue in abdominoplasty is the midsagittal part of the supraumbilical region with the highest risk of hemodynamic disturbance. Here, the skin is also thinner compared to the neighboring lateral tissues. This may result in
Aret Cerci Ozkan, Burcak Tumerdem Ulug
doaj   +1 more source

Splitting ore from X-ray image based on improved robust concave-point algorithm [PDF]

open access: yesPeerJ Computer Science, 2023
Image segmentation is a key part of ore separation process based on X-ray images, and its segmentation result directly affects the accuracy of ore classification.
Lanhao Wang   +3 more
doaj   +2 more sources

The effect of heat losses and heat transfer coefficient on the efficiency of the solar air heater collector [PDF]

open access: yesE3S 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

Bi-log-concave distribution functions [PDF]

open access: yes, 2017
Nonparametric statistics for distribution functions F or densities f=F' under qualitative shape constraints provides an interesting alternative to classical parametric or entirely nonparametric approaches.
Wilke, Ralf A.   +5 more
core   +1 more source

The Effect of Concave-Side Intertransverse Ligament Laxity on the Stress of AIS Lumbar Spine Based on Finite Element Method

open access: yesBioengineering, 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

An enhanced concave program relaxation for choice network revenue management [PDF]

open access: yes, 2013
The network choice revenue management problem models customers as choosing from an offer set, and the firm decides the best subset to offer at any given moment to maximize expected revenue.
Meissner, Joern   +5 more
core   +1 more source

The mathematical model of the precessional gear and the process of generation of inclined teeth [PDF]

open access: yesJournal 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

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