Results 31 to 40 of about 38,780 (255)

Hydrogen as a Nuclear Thermal Rocket Propellant

Brazilian Journal of Radiation Sciences, 2022
Nuclear Thermal Propulsion (NTP) is a successfully developed technology, though it hasn’t been officially used in the propulsion system of an astronautical mission. It is the technology most likely to make long distance journeys in space possible.
Antonella Lombardi Costa, Pedro Augusto Rezende, João Gabriel Oliveira, Claubia Pereira, José Eduardo Mautone   +4 more
doaj   +1 more source

Breeding home range selection of Eastern Population sandhill cranes across the boreal forest

The Journal of Wildlife Management, EarlyView.
We evaluated breeding home range habitat selection of sandhill cranes (Antigone canadensis) in the boreal forest of eastern Canada. Overall, we found that sandhill cranes selected breeding home ranges with greater proportions of wetlands, cropland, and recently disturbed forest.
Kiaunna J. Lee, Kelly E. McLean, Christopher M. Sharp, Christine Lepage, Bradley C. Fedy   +4 more
wiley   +1 more source

Experimental studies on the influence of chlorides on the combustion and agglomeration characteristics of solid propellants

Fuel Processing Technology
The main approach to improving the performance of aluminum-containing propellants is to promote the rupture of the oxide film on the surface of aluminum.
Lu Liu, Geng Xu, Zhan Wen, Guoqiang He, Peijin Liu, Wen Ao   +5 more
doaj   +1 more source

Mass Spectrometry Structural Proteomics Enabled by Limited Proteolysis and Cross‐Linking

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The exploration of protein structure and function stands at the forefront of life science and represents an ever‐expanding focus in the development of proteomics. As mass spectrometry (MS) offers readout of protein conformational changes at both the protein and peptide levels, MS‐based structural proteomics is making significant strides in the
Haiyan Lu, Zexin Zhu, Lauren Fields, Hua Zhang, Lingjun Li   +4 more
wiley   +1 more source

Preliminary Studies of a Propellant System for the Counterprojectile of an Active Protection System [PDF]

Problemy Mechatroniki, 2017
This paper presents a selection of the deliverables for a research project intended to develop a technology demonstrator for a smart counterprojectile forming part of an active protection system.
Zbigniew SURMA, Mirosław ZAHOR, Przemysław KUPIDURA, Zbigniew Leciejewski   +3 more
doaj   +1 more source

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

Research on Solving the Structural Instability of Composite Propellants by Using Non-Ablative Cladding Layers

Aerospace
In a high-temperature test of the gas generator with a free-loading composite propellant, an abnormal jitter appeared in the latter part of the internal ballistic curve, whereas no such abnormality was observed in the low-temperature and normal ...
Gang Zhang, Mingming Zhan, Wen Feng, Youwen Tan, Yang Liu, Weihua Hui   +5 more
doaj   +1 more source

High‐Performance Oxidation and Nanomolar Detection of Phenylhydrazine Using a 6‐Hydroxyflavone‐Based Molecular Electrocatalyst Functionalized Multiwalled Carbon Nanotube in Batch Injection Analysis

ChemistryOpen, EarlyView.
This study presents a novel, rapid method for in situ functionalization of carbon electrodes using redox‐active form of the 6‐hydroxyflavone. The resulting multiwalled carbon nanotubes with redox‐active HFLA (MWCNT@HFLA‐Redox) electrode enables sensitive, selective detection of toxic phenylhydrazine, with excellent performance (limit of detection: 7 nM)
Valisireddy Lavanya, Kannappan Santhakumar, Annamalai Senthil Kumar   +2 more
wiley   +1 more source

A Bambusuril Receptor Binds Charge Diffuse Anions in Water at Picomolar Concentrations

Angewandte Chemie, Volume 137, Issue 37, September 8, 2025.
Synthesis of a bambusuril macrocycle with unprecedented binding affinity for several charge diffuse anions, including iodide, perchlorate, nitrate, and perrhenate, in neutral phosphate buffer is reported. The macrocycle exhibits selectivity for charge diffuse over charge dense anions exceeding seven orders of magnitude.
Surbhi Grewal, Petr Slávik, Vladimír Šindelář   +2 more
wiley   +2 more sources

A Structural Integrity Perspective for the Assessment of Ageing in Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Composite solid propellants (CSPs) are critical materials in the defence and aerospace industries, known for their complex mechanical behaviour and susceptibility to ageing. This study explores the application of Principal Component Analysis (PCA) to discriminate the ageing degradation of CSPs based on structural integrity parameters.
Mario Martínez, Raúl López, Jesús Rodríguez, Alicia Salazar   +3 more
wiley   +1 more source