Results 61 to 70 of about 9,717,661 (350)

Highly Luminous Scintillating Nanocomposites Enable Ultrafast Time Coincidence Resolution for γ‐rays Detection with Heterostructured Multilayer Scintillators

Advanced Functional Materials, EarlyView.
A scintillating polymeric composites loaded with hafnia nanoparticles is engineered to obtain a highly luminous material, thus achieving a 400% improvement of the scintillation yield under soft X‐rays. The nanocomposite is employed to realize a multilayer heterostructured prototype scintillator than enable for ultrafast time coincidence resolution in ...
Matteo Sala, Matteo Orfano, Valeria Secchi, Ilaria Mattei, Nicolò Pianta, Vojtech Zabloudil, Carsten Lowis, Romana Kučerková, Martin Nikl, Francesco Meinardi, Etiennette Auffray, Irene Villa, Angelo Monguzzi   +12 more
wiley   +1 more source

Design and CFD Simulation of Supersonic Nozzle by Komega turbulence model for Supersonic Wind Tunnel [PDF]

E3S Web of Conferences
This paper presents an impressive design of a convergent divergent (C-D) nozzle using the method of characteristics for a Mach number 2 test section. The nozzle’s geometry was meticulously crafted in SolidWorks, and its performance was evaluated through ...
Raman Ravi Shankar, Vinod Kumar S., Reddy Uma, Dodke Amit, Kumar Ashwani, Jayronia Sonali, Adnan Myasar Mundher   +6 more
doaj   +1 more source

High Mach-number Bondi--Hoyle--Lyttleton flow around a small accretor [PDF]

, 2005
In this paper, we discuss a two-dimensional numerical study of isothermal high Mach number Bondi--Hoyle--Lyttleton flow around a small accretor. The flow is found to be unstable at high Mach numbers, with the instability appearing even for a larger accretor.
arxiv   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Research on analysis method of propulsive efficiency of prop-fan engine

Hangkong gongcheng jinzhan
It is of great significant for prop-fan engine under medium to high Mach number to evaluate the propulsive efficiency of turbofan, turboprop and prop-fan engines.
HUANG Xing, LI Wei, YANG Yufei, ZHENG Hualei   +3 more
doaj   +1 more source

Optoelectronic Devices for In‐Sensor Computing

Advanced Materials, EarlyView.
The raw data obtained directly from sensors in the noisy analogue domain is often unstructured, which lacks a predefined format or organization and does not conform to a specific data model. Optoelectronic devices for in‐sensor visual processing can integrate perception, memory, and processing functions in the same physical units, which can compress ...
Qinqi Ren, Chaoyi Zhu, Sijie Ma, Zhaoqing Wang, Jianmin Yan, Tianqing Wan, Weicheng Yan, Yang Chai   +7 more
wiley   +1 more source

Biological Synthesis of Reusable Silver Nanoparticle‐Protein Antimicrobial Films

Advanced Materials Interfaces, EarlyView.
Aiming to reduce the toxicity of silver nanoparticles (AgNPs), curli fibers are used as a protein scaffold to retain them. Curli‐AgNP films are resilient to broad pH conditions, and several solvents and are mechanically strong. They also show the ability to release AgNPs in alkaline pH but retain them in acidic pH.
Mario Alfonso Arenas García, Slah Hidouri, Xinxin Hao, Julia Maria de Medeiros Dantas, Noémie‐Manuelle Dorval Courchesne   +4 more
wiley   +1 more source

Computational Study of Shocked V-Shaped N₂/SF₆ Interface across Varying Mach Numbers

Axioms
The Mach number effect on the Richtmyer–Meshkov instability (RMI) evolution of the shocked V-shaped N2/SF6 interface is numerically studied in this research. Four distinct Mach numbers are taken into consideration for this purpose: Ms=1.12,1.22,1.42, and
Salman Saud Alsaeed, Satyvir Singh
doaj   +1 more source

The Influence of External Flow Field on the Flow Separation of Overexpanded Single-Expansion Ramp Nozzle

Aerospace, 2023
Flow separation and transitions of separation patterns are common phenomena of nozzles working with a wide Mach range. The maximum thrust method is applied to design the single-expansion ramp nozzle (SERN) for specific operating conditions. The nozzle is
Yang Yu, Yuepeng Mao, Tao Yu, Yalin Yang, Shulin Xu, Sijia Liang   +5 more
doaj   +1 more source

Low Mach Number Modeling of Convection in Helium Shells on Sub-Chandrasekhar White Dwarfs. I. Methodology [PDF]

, 2012
We assess the robustness of a low Mach number hydrodynamics algorithm for modeling helium shell convection on the surface of a white dwarf in the context of the sub-Chandrasekhar model for Type Ia supernovae. We use the low Mach number stellar hydrodynamics code, MAESTRO, to perform three-dimensional, spatially-adaptive simulations of convection ...
arxiv   +1 more source