Results 41 to 50 of about 563,300 (295)

Carbon K-shell photoelectron angular distribution from fixed-in-space CO2 molecules [PDF]

open access: yes, 2003
Measurements of photoelectron angular distributions for carbon K-shell ionization of fixed-in-space CO2 molecules with the molecular axis oriented along, perpendicular and at 45 degrees to the electric vector of the light are reported. The major features
Cassimi, A.   +15 more
core   +2 more sources

Hydrodynamic simulations of shell convection in stellar cores

open access: yes, 2011
Shell convection driven by nuclear burning in a stellar core is a common hydrodynamic event in the evolution of many types of stars. We encounter and simulate this convection (i) in the helium core of a low-mass red giant during core helium flash leading
A Chieffi   +15 more
core   +1 more source

Preparation of MOF Derived Zn-Co-C Composite as Anode for Lithium-ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2020
This paper focuses on the preparation of hollow mixed metal oxide materials by means of mixed metal atom doping. In this paper, the hollow core-shell structure Zn-Co-MOFs material was prepared by hydrothermal method, calcined into Zn-Co-C material, and ...
Mingyuan Ren   +3 more
doaj   +1 more source

Visualizing Morphogenesis through Instability Formation in 4-D Printing. [PDF]

open access: yes, 2019
Heterogeneous growth in a myriad of biological systems can lead to the formation of distinct morphologies during the maturation processes of different species.
Frenkel, Imri   +7 more
core  

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

Ni/Ni3C Core-Shell Nanochains and Its Magnetic Properties: One-Step Synthesis at low temperature

open access: yes, 2008
One-dimensional Ni/Ni3C core-shell nanoball chains with an average diameter by around 30 nm were synthesized by means of a mild chemical solution method using a soft template of trioctylphosphineoxide (TOPO).
Chen, Chinping   +7 more
core   +1 more source

Magnetic core nanoparticles coated by titania and alumina for water and wastewater remediation from metal contaminants [PDF]

open access: yes, 2017
Nanomaterials have been widely used for remediation of contaminated streams. However, using nanomaterials within water and wastewater might be dangerous since fate and health impact of nanoparticles is still unknown.
Boni, Maria Rosaria   +3 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

A SERS Study of Charge Transfer Process in Au Nanorod–MBA@Cu2O Assemblies: Effect of Length to Diameter Ratio of Au Nanorods

open access: yesNanomaterials, 2021
Surface-enhanced Raman scattering (SERS) is a powerful tool in charge transfer (CT) process research. By analyzing the relative intensity of the characteristic bands in the bridging molecules, one can obtain detailed information about the CT between two ...
Lin Guo   +6 more
doaj   +1 more source

A k-shell decomposition method for weighted networks

open access: yes, 2012
We present a generalized method for calculating the k-shell structure of weighted networks. The method takes into account both the weight and the degree of a network, in such a way that in the absence of weights we resume the shell structure obtained by ...
Anderson R M   +13 more
core   +1 more source

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