Results 61 to 70 of about 270,343 (348)

Enthalpy and stagnation temperature determination of a high temperature laminar flow gas stream Patent [PDF]

open access: yes, 1965
Measuring conductive heat flow and thermal conductivity of laminar gas stream in cylindrical plug to simulate atmospheric ...
Glawe, G. E.   +2 more
core   +1 more source

Exciton Diffusion in Two‐dimentional Chiral Perovskites

open access: yesAdvanced Optical Materials, EarlyView.
Transport of light‐emitting excitons is demonstrated in 2D chiral perovskites via transient optical microscopy. The excitons are found to diffuse rapidly after the excitation followed by localization at longer time‐scales. Temperature‐dependent exciton propagation combined with photothermal deflection spectroscopy measurements reveal the role of ...
Sophia Terres   +12 more
wiley   +1 more source

Long-lead forecasts of wintertime air stagnation index in southern China using oceanic memory effects [PDF]

open access: yesarXiv, 2023
Stagnant weather condition is one of the major contributors to air pollution as it is favorable for the formation and accumulation of pollutants. To measure the atmosphere's ability to dilute air pollutants, Air Stagnation Index (ASI) has been introduced as an important meteorological index.
arxiv  

A Beating‐Heart Procedure with Soft Robotic Guidance

open access: yesAdvanced Robotics Research, EarlyView.
Robot‐assisted pacemaker lead placement through the coronary sinus enabled cardiac pacing in multiple in vivo studies. When compared with conventional clinical tools, the robot reduced procedural time, duration of harmful radiation exposure, and the possibility of tissue damage.
Jacob Rogatinsky   +9 more
wiley   +1 more source

Bifunctional Mesoporous MO x (M = Cr, Fe, Co, Ni, Ce) Oxygen Electrocatalysts for Platinum Group Metal‐Free Oxygen Pumps

open access: yesEnergy Technology, Volume 10, Issue 12, December 2022., 2022
The family of high‐quality crystalline mesoporous MOx synthesized via soft‐templated hydrothermal synthesis is investigated in oxygen reduction reaction and oxygen evolution reaction electrocatalysis. Using developed NiO, the symmetrical platinum group metal‐free oxygen pump is elaborated for the first time.
Zhixing Wu   +6 more
wiley   +1 more source

The thermochemical non-equilibrium scale effects of the high enthalpy nozzle

open access: yesAdvances in Aerodynamics, 2020
The high enthalpy nozzle converts the high enthalpy stagnation gas into the hypervelocity free flow. The flow region of the high enthalpy nozzle consists of three parts: an equilibrium region upstream of the throat, a non-equilibrium region near the ...
Junmou Shen   +4 more
doaj   +1 more source

Hot Gas Flows on Parsec Scale in the Low-Luminosity Active Galactic Nucleus NGC 3115 [PDF]

open access: yes, 2019
NGC 3115 is known as the low-luminosity active galactic nucleus which hosts the nearest ($z\sim0.002$) billion solar mass supermassive black hole ($\sim1.5\times10^9~M_\odot$). Its Bondi radius $r_\mathrm{B}$ ($\sim3\farcs6$) can be readily resolved with Chandra, which offers us an excellent opportunity to investigate the accretion flow onto a ...
arxiv   +1 more source

A new Look at the Electron Diffusion Region in Asymmetric Magnetic Reconnection [PDF]

open access: yes, 2020
A new look at the structure of the electron diffusion region in collisionless magnetic reconnection is presented. The research is based on a particle-in-cell simulation of asymmetric magnetic reconnection, which include a temperature gradient across the current layer in addition to density and magnetic field gradient. We find that none of X-point, flow
arxiv   +1 more source

Upcycling Canola: Closed‐Loop Water Retting System for Sustainable Fiber Production from Waste Canola Stalks

open access: yesAdvanced Sustainable Systems, EarlyView.
The closed‐loop gravitational retting system accelerates fiber extraction, making it the fastest known water retting technique. It efficiently produces high‐quality canola fiber while preserving its structure. Additionally, it minimizes carbon emissions, supporting sustainability.
Md Shadhin   +7 more
wiley   +1 more source

Modeling Temperature Fluctuations during Intermittent Water Usage within Water Systems: Water Quality Impact

open access: yesEngineering Proceedings
Temperature is a crucial factor that can influence chemical and microbiological activities within building water systems. Due to factors like widespread water conservation programs or shutdowns resulting from events like the COVID-19 pandemic, water ...
Fatemeh Hatam   +3 more
doaj   +1 more source

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