Results 1 to 10 of about 138,876 (301)

A new species of <i>Allostoma</i> (Platyhelminthes, Prolecithophora) from the coast of Japan. [PDF]

open access: yesBiodivers Data J
The genus Allostoma von Beneden, 1861 (Pseudostomidae Graff, 1904) consists of generally small, often conspicuously colored species. These organisms are typically found on hard bottoms, in gravel, or among algae in marine and brackish-water environments.
Omi N.
europepmc   +4 more sources

Performance Improvement of a Low-Power Wind Turbine Using Conical Sections

open access: yesEnergies, 2021
This paper examines the performance of conical sections (concentrator and diffuser) to improve the energy-recovery prospects of small-scale wind turbines.
Janesh N. Mohanan   +2 more
doaj   +1 more source

Throat length effect on the flow patterns in off-design conical nozzles [PDF]

open access: yesFME Transactions, 2022
In the present work, a flow field study was performed for off-design conical nozzles with non-circular cylindrical throat sections such as those found in experimental sounding rocket motor applications. The flow field was simulated with the RANS model in
Tolentilo San Luis, Mirez Jorge
doaj   +1 more source

Computer Modelling of Yarn Winding on Conical Bobbins

open access: yesTekstilec, 2023
The article presents the results of the computer modelling of yarn winding on conical bobbins based on the analytical method of constructing tubular-shaped surfaces as a partial case of channel surfaces using the vector algebra apparatus.
Volodymyr Dvorzhak   +3 more
doaj   +1 more source

Mathematical Description of the Aerodynamic Characteristics of Stationary Flows in a Vertical Conical Diffuser When Air Is Supplied through Various Tube Configurations

open access: yesAxioms, 2023
Conical diffusers of various configurations are used in many kinds of technical equipment and manufacturing processes. Therefore, it is a relevant objective to obtain reliable experimental and mathematical data on the aerodynamic characteristics of ...
Leonid Plotnikov
doaj   +1 more source

Computational fluid dynamics simulation of the flow patterns and performance of conventional and dual-cone gas-particle cyclones [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2018
One of the main concerns of researchers is the separation of suspended particles in a fluid. Accordingly, the current study numerically investigated the effects of a conical section on the flow pattern of a Stairmand cyclone by simulating single-cone and
Seyed Masoud Vahedi   +3 more
doaj   +1 more source

Effects of toroidal transition on strength and stability of submarine's cone-cone connection structure

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] The cone-toroid-cone structure is a new type of structure to solve the problem of stress concentration at the joint of two conical shells with different angles in a pressure hull of submarine.
JING Teng   +3 more
doaj   +1 more source

The fate of the homoctenids (Tentaculitoidea) during the Frasnian-Famennian mass extinction (Late Devonian) [PDF]

open access: yes, 2006
The homoctenids (Tentaculitoidea) are small, conical-shelled marine animals which are amongst the most abundant and widespread of all Late Devonian fossils.
Alberti GKB   +48 more
core   +1 more source

Advantages of Friction Welding of Fittings with Small Diameter Conical Contact Form

open access: yesAdvanced Engineering Research, 2023
Introduction. As numerous production tests show, the use of manual arc welding (MAW) of thick-walled fittings of small diameter (up to 80 mm) does not provide a high-quality weld joint that meets the requirements of regulatory and technical documents of ...
Yu. V. Poletaev, V. V. Shchepkin
doaj   +1 more source

An Algorithm for Producing Fuzzy Negations via Conical Sections

open access: yesAlgorithms, 2019
In this paper we introduced a new class of strong negations, which were generated via conical sections. This paper focuses on the fact that simple mathematical and computational processes generate new strong fuzzy negations, through purely geometrical ...
Georgios Souliotis, Basil Papadopoulos
doaj   +1 more source

Home - About - Disclaimer - Privacy