Results 121 to 130 of about 89,179 (297)

Numerical Investigations on Vortical Structures in the Near Tongue Region of a Centrifugal Pump during Transient Operation [PDF]

open access: yes
Centrifugal pumps are considered to be an integral part of process industries around the world. The flow structure within centrifugal pumps is very complex due to the interaction between the rotating impeller and the geometric features around it, such as
Asim, Taimoor, Mishra, Rakesh
core  

Pulmonary development in Squamata: Insights from embryonic studies using micro‐CT

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Pulmonary development in tetrapods is a complex process, especially within squamates, where single‐chambered, transitional, and multi‐chambered lungs can be found in adult animals. While the embryological development of the respiratory system of lizards and snakes was studied in a number of species between the 1830s and 1940s, the ...
Barbara G. Champini   +3 more
wiley   +1 more source

A survey of instabilities within centrifugal pumps and concepts for improving the flow range of pumps in rocket engines [PDF]

open access: yes
Design features and concepts that have primary influence on the stable operating flow range of propellant-feed centrifugal turbopumps in a rocket engine are discussed.
Veres, Joseph P.
core   +1 more source

Optimal Design of a Liquid Hydrogen Centrifugal Pump Impeller

open access: yesEnergies
Global energy consumption has continued to increase in recent years with economic development. Fossil energy sources are now being replaced with renewable energy, and hydrogen is one of such alternatives.
Catur Harsito   +3 more
doaj   +1 more source

Optimization of Energy Efficiency in Photovoltaic Water Pumping Systems Using Neural Networks

open access: yesEnergy Science &Engineering, EarlyView.
This study investigates an optimal control strategy for a photovoltaic (PV) water pumping system aimed at improving efficiency and autonomy in off‐grid applications. The system uses an induction motor with direct torque control and compares three maximum power point tracking (MPPT) techniques: neural network–based MPPT, Incremental Conductance (IC ...
Sihem Ghoudelbourk   +3 more
wiley   +1 more source

Design, Production and Testing of a Single Stage Centrifugal Pump [PDF]

open access: yes, 2017
The design, construction and testing of a single stage centrifugal pump is presented in this project work, electric motor drives the centrifugal pump, which draws fluid (water) from a water storage wall and delivers same through a flow control valve to a ...
Ismail, Abdurrahman O   +3 more
core  

Protocol for the Preparation of Polyphenols‐Polysaccharide Nanoparticles

open access: yesFood Chemistry International, EarlyView.
ABSTRACT Polyphenols, natural compounds abundantly distributed in plants, possess potent antioxidant and anti‐inflammatory activities and hold promising potential in cardiovascular protection and the management of metabolic disorders. Nevertheless, their intrinsic instability and low bioavailability severely constrain their practical and large‐scale ...
Chenxu Bao   +6 more
wiley   +1 more source

Impeller-Induced Rotor-Dynamic Forces [PDF]

open access: yes, 1989
The flow through and around the rotor of a turbomachine exerts a force on the rotor and, hence, rotor shaft and bearing system. In some circumstances this force may lead to excitation of shaft whirl in the direction of impeller rotation.
Acosta, Allan J.   +2 more
core  

Strategic construction of fluorinated surroundings in NIR‐II‐emissive organic semiconducting agents for amplifying cancer phototheranostics

open access: yesFlexMat, EarlyView.
The development of conventional phototheranostic nanomedicines suffers from an intrinsic trade‐off between NIR‐II fluorescence emission and phototherapeutic effects, leading to poor overall efficacy. Herein, we propose an innovative fluorination strategy by constructing fluorinated surroundings in NIR‐II‐emissive organic semiconducting agents to ...
Xiaoming Hu   +7 more
wiley   +1 more source

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