Results 71 to 80 of about 8,007 (113)

Nuclear archaeology to assess fissile-material inventories for nuclear safety and security, transparency, and disarmament

The Nonproliferation Review, 2023
Uncertainties about the size of fissile-material stockpiles are large; states routinely observe differences between measured physical inventories and “book inventories.” Nuclear archaeology can reduce these uncertainties. A new, integrated approach would
Malte Göttsche
semanticscholar   +1 more source

Effect of collagen denaturation degree on mechanical properties and biological activity of nanofibrous scaffolds.

Journal of Biomedical Materials Research. Part A, 2023
Further progress in regenerative medicine and bioengineering highly depends on the development of 3D polymeric scaffolds with active biological properties. The most attention is paid to natural extracellular matrix components, primarily collagen. Herein,
T. Tenchurin, Elena V Sytina, E. V. Solovieva, A. Shepelev, V. Mamagulashvili, S. Krasheninnikov, Evgeniy V Yastremskiy, Elizaveta V Nesterenko, Aleksandr I. Buzin, E. Istranova, Leonid P Istranov, T. K. Fatkhudinov, Andrey A. Panteleyev, S. N. Chvalun   +13 more
semanticscholar   +1 more source

Mechanistic Understanding of DNA Denaturation in Nanoscale Thermal Gradients Created by Femtosecond Excitation of Gold Nanoparticles.

ACS Applied Materials and Interfaces, 2022
There is significant interest in developing photothermal systems that can precisely control the structure and function of biomolecules through local temperature modulation.
D. Hastman, Parth Chaturvedi, E. Oh, J. Melinger, Igor L. Medintz, L. Vuković, S. A. Díaz   +6 more
semanticscholar   +1 more source

Attractiveness of Fissile Material in Nuclear Wastes from Different Fuel Cycles

Nuclear Technology, 2023
Nuclear fuel cycle advancements will result in new types of fissile material, including nuclear wastes, that require security and safeguards. Nuclear wastes may be more vulnerable for diversion by non-state actors, and chemical processing to recover ...
M. Atz, M. Fratoni
semanticscholar   +1 more source

Preliminary Core Calculation on Reactivity Compensation for SiC Matrix Fuel Compact HTTR With Erbium Burnable Poison and Plutonium Fissile Material

Volume 15: Student Paper Competition, 2022
Proposed higher power density HTGR by removing the graphite sleeve and implementing the SiC matrix fuel compact has neutronics problem on criticality. Present study selected Er burnable poison and Pu fissile material as possible candidate to compensate
Y. Nishimura, M. Allaf, Shoichiro Okita, M. Goto, K. Okamoto   +4 more
semanticscholar   +1 more source

Design of Nanosensors for Fissile Materials in Nuclear Waste Water

, 2013
Uranium and plutonium ions and their complexes play an important role in nuclear fuel reprocessing, and their trace characterization is important in nuclear forensics.
Narendra Kumar, J. Seminario
semanticscholar   +1 more source

All biomass bovine serum albumin/alginate hydrogels: robust mechanical strength and excellent shape memory performance regardless of protein denaturation

Academia Materials Science
Shape memory materials made from biomacromolecules are eco-friendly but often display low mechanical strength and inferior shape memory performance.
Shaorong Zong, Xiao-Yi Chu, Jia Kang, Cungang Gao, Pengxin Jia, Yue Sun, Rui Nian, Wenfa Yu, Kaiming Wang   +8 more
semanticscholar   +1 more source

Assessing Pakistan’s Fissile Material Production

Science & Global Security
Reports suggest that Pakistan’s indigenous, military nuclear program faces a natural uranium shortage, limiting fissile material production. However, Pakistan has recently built three new plutonium-producing reactors and significantly expanded its ...
Max Schalz, E. Branger, Malte Göttsche, S. Grape, Cecilia Gustavsson   +4 more
semanticscholar   +1 more source

System of combined active and passive control of fissile materials and their nuclide composition in nuclear wastes

, 2011
New methods of non-destructive control must be developed and existing ones must be improved in order to solve the problem of control of fissile materials (FMs) in vessels with nuclear wastes, and to provide safe operation of nuclear power plants.
Y. Barmakov, E. Bogolyubov, O. Bochkarev, Yu. G. Polkanov, V. Romodanov, D. Chernikova   +5 more
semanticscholar   +1 more source

Improvement of the VVER-1200 Fuel Cycle by Introducing Thorium with Different Fissile Material in Blanket-Seed Assembly

Nuclear science and engineering, 2019
This work presents a comparison between the homogeneous and heterogeneous [seed-blanket (SB)] fuel assembly used in the VVER-1200 core. The MCNPX 2.7 code with the ENDF/B-VII.0 data library was used to investigate the possible advantages that can be ...
A. Galahom
semanticscholar   +1 more source