Results 21 to 30 of about 5,733,113 (297)

Eggs in the freezer: energetic consequences of nest site and nest design in Arctic breeding shorebirds [PDF]

, 2012
Birds construct nests for several reasons. For species that breed in the Arctic, the insulative properties of nests are very important. Incubation is costly there and due to an increasing surface to volume ratio, more so in smaller species. Small species
Hans Schekkerman, Tulp Ingrid, Leeuw, J.J., de, Ingrid Tulp, de Leeuw, J.J., Joep de Leeuw, Tulp, I., Schekkerman, H., Tulp, I.Y.M., de Leeuw Joep, Schekkerman Hans, Tulp, Ingrid, Sveriges lantbruksuniversitet., De Leeuw, Joep, De Leeuw, Joep,, Hans, Schekkerman   +15 more
core   +3 more sources

Analysis of Gap Formation in the Casting of Energetic Materials [PDF]

, 2007
The problem of undesirable separation of the cast material from the mold in the casting of energetic materials is investigated. Comprehensive models are developed to simulate the heat and mass transfer processes during melt casting of energetic materials,
Singh, S. K., Sun, D., Annapragada, S. R., Garimella, S V   +3 more
core   +1 more source

Additive Manufacturing of a Special-Shaped Energetic Grain and Its Performance

Micromachines, 2021
In order to solve the problems of the complicated forming process, poor adaptability, low safety, and high cost of special-shaped energetic grains, light-curing 3D printing technology was applied to the forming field of energetic grains, and the ...
Yongjin Chen, Shuhong Ba, Hui Ren
doaj   +1 more source

Densification of Two Forms of Nanostructured TATB under Uniaxial Die Pressures: A USAXS–SAXS Study

Nanomaterials, 2023
Sequential ultra-small-angle and small-angle and X-ray scattering (USAXS and SAXS) measurements of hierarchical microstructure of a common energetic material, the high explosive 2,4,6-Triamino-1,3,5-trinitrobenzene (TATB), were performed to follow the ...
Yan Zhou, Jing Shi, Mark Julian Henderson, Xiuhong Li, Feng Tian, Xiaohui Duan, Qiang Tian, László Almásy   +7 more
doaj   +1 more source

Thermal Analysis and Stability of Boron/Potassium Nitrate Pyrotechnic Composition at 180 °C

Applied Sciences, 2019
Aerospace missions require that pyrotechnic compositions are able to withstand 180 °C. Therefore, this paper studies the thermal stability and output performance of boron/potassium nitrate (abbreviated BPN) used in pyrotechnic devices.
Chaozhen Li, Nan Yan, Yaokun Ye, Zhixing Lv, Xiang He, Jinhong Huang, Nan Zhang   +6 more
doaj   +1 more source

Some Nitrogen Rich Energetic Material Synthesis by Nucleophilic Substitution Reaction from Polynitro Aromatic Compounds

Acta Chimica Slovenica, 2021
Three new nitrogen-rich energetic compounds, N-(5-chloro-2,4-dinitrophenyl)hydrazine (1), N-(5-chloro-2,4-dinitrophenyl)guanidine (2) and N-(5-chloro-2,4-dinitrophenyl)-4-aminopyrazole (3) prepared by the nucleophilic substitution reaction of 1,3 ...
Kübra Gürpınar, Yaprak Gürsoy Tuncer, Ş. Betül Sopacı, M. Abdulkadir Akay, Hasan Nazır, Ingrid Svoboda, Orhan Atakol, Emine Kübra İnal   +7 more
doaj   +1 more source

Advancements in mechanical Raman spectroscopy for applications in energetic materials

Energetic Materials Frontiers, 2021
This paper aims to provide a detailed review of the fundamentals and applications of mechanical Raman spectroscopy in the field of energetic materials. Firstly, the principle behind mechanical Raman spectroscopy (MRS) is introduced to measure stress and ...
Abhijeet Dhiman, Nolan S. Lewis, Tyler Dillard, Meghana Sudarshan, Vikas Tomar   +4 more
doaj   +1 more source

Multi-physic system simplification method applied to a helicopter flight axis active control [PDF]

, 2012
A helicopter flight axis control, which is a complex multi-physic system, is modelled using an energetic based graphical tool: the Energetic Macroscopic Representation.
GOMAND, Julien, Francois Malburet, Pierre-Jean Barre, BARRE, Pierre-Jean, MARTIN, Mikael, Mikael Martin, Julien Gomand, MALBURET, François   +7 more
core   +1 more source

Operational Analysis of a Pilot-Scale Plant for Hydrogen Production via an Electrolyser Powered by a Photovoltaic System

Energies
This study presents preliminary findings from an experimental campaign conducted on a pilot-scale green hydrogen production plant powered by a photovoltaic (PV) system. The integrated setup, implemented at the University “Mediterranea” of Reggio Calabria,
Lucio Bonaccorsi, Rosario Carbone, Fabio La Foresta, Concettina Marino, Antonino Nucara, Matilde Pietrafesa, Mario Versaci   +6 more
doaj   +1 more source

Organic and Inorganic Biocidal Energetic Materials for Agent Defeat Weapons: An Overview and Research Perspectives

Energies, 2023
A critical survey concerning biocidal energetics is proposed according to a classification depending on their chemical structure. The need of optimizing the performances of such compounds is an important target for the inertization of biological weapons,
Andrea Pietro Reverberi, Valery Pavlovic Meshalkin, Oleg B. Butusov, Tamara B. Chistyakova, Maurizio Ferretti, Anna Maria Cardinale, Bruno Fabiano   +6 more
doaj   +1 more source