Results 61 to 70 of about 11,144 (287)

Prebiotic Reaction Networks in Water

Life, 2020
A prevailing strategy in origins of life studies is to explore how chemistry constrained by hypothetical prebiotic conditions could have led to molecules and system level processes proposed to be important for life’s beginnings. This strategy has yielded
Quoc Phuong Tran, Zachary R. Adam, Albert C. Fahrenbach   +2 more
doaj   +1 more source

On RAF Sets and Autocatalytic Cycles in Random Reaction Networks

, 2014
The emergence of autocatalytic sets of molecules seems to have played an important role in the origin of life context. Although the possibility to reproduce this emergence in laboratory has received considerable attention, this is still far from being ...
A Filisetti, A Filisetti, A Filisetti, A-L Barabási, Alessandro Filisetti, B Alberts, D Segre, E Mossel, F Dyson, J Farmer, JW Szostak, L Schmidt, M Eigen, M Eigen, P Luisi, PF Stadler, R Diester, R Serra, Roberto Serra, RV Solé, S Jain, S Jain, S Rasmussen, SA Kauffman, SA Kauffman, SS Mansy, T Carletti, T Rocheleau, Tibor Gánti, W Hordijk, W Hordijk, Wim Hordijk   +31 more
core   +1 more source

On a Hypercycle System with Nonlinear Rate [PDF]

, 2001
We study an (N+1)-hypercyclical reaction-diffusion system with nonlinear reaction rate n. It is shown that there exists a critical threshold N_0 such that for N\leq N_0 the system is stable while for N> N_0 it becomes unstable.
Wei, J, Winter, M
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Non-Equilibrium Thermodynamics View on Kinetics of Autocatalytic Reactions—Two Illustrative Examples

Molecules, 2021
Autocatalytic reactions are in certain contrast with the linear algebra of reaction stoichiometry, on which rate equations respecting the permanence of atoms are constructed. These mathematical models of chemical reactions are called conservative.
Miloslav Pekař
doaj   +1 more source

Chiral Crystal Growth under Grinding

, 2008
To study the establishment of homochirality observed in the crystal growth experiment of chiral molecules from a solution under grinding, we extend the lattice gas model of crystal growth as follows. A lattice site can be occupied by a chiral molecule in
Becker R., Brandenburg A., Frank F. C., Japp F. R., Kipping F. S., Kondepudi D. K., Mauksch M., Noorduin W. L., Noorduin W. L., Ostwald W., Pasteur L., Plasson R., Saito Y., Saito Y., Saito Y., Saito Y., Sato I., Shibata R., Soai K., Uwaha M., Uwaha M., Viedma C.   +21 more
core   +1 more source

Copper‐Based Crystalline‐Metallic Glass Composite Thin Films: A Novel Material with Enhanced Strength and Thermally Stable Nanotwins

Advanced Functional Materials, EarlyView.
A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian, Amit Sharma, Krzysztof Wieczerzak, Alexander Groetsch, Manish Jain, Nicolò Maria della Ventura, Remo Widmer, Fedor F. Klimashin, Johann Michler, Jakob Schwiedrzik, Xavier Maeder   +10 more
wiley   +1 more source

Cubic autocatalysis implementation in blood for non-Newtonian tetra hybrid nanofluid model through bounded artery

Applied Rheology
Tetra hybrid nanofluids are significant due to their unique properties like thermal and electrical conductivity enhancement, increased heat transfer, and improved fluid flow characteristics. This attempt proposes a tetra hybrid cross nanofluid model with
Al-Kouz Wael, Owhaib Wahib, Souayeh Basma, Hader Montasir, Homod Raad Z.   +4 more
doaj   +1 more source

HOO^• as the Chain Carrier for the Autocatalytic Photooxidation of Benzylic Alcohols

Molecules
The oxidation of benzylic alcohols is an important transformation in modern organic synthesis. A plethora of photoredox protocols have been developed to achieve the aerobic oxidation of alcohols into carbonyls.
Xiao-Yu Wang, Huan-E Lao, Hao-Yue Zhang, Yi Wang, Qing Zhang, Jie-Qing Wu, Yu-Feng Li, Hong-Jun Zhu, Jian-You Mao, Yi Pan   +9 more
doaj   +1 more source

Dimensions Missing from Ecology

Philosophies, 2018
Ecology, with its emphasis on coupled processes and massive heterogeneity, is not amenable to complete mechanical reduction, which is frustrated for reasons of history, dimensionality, logic, insufficiency, and contingency. Physical laws are not violated,
Robert E. Ulanowicz
doaj   +1 more source