Results 31 to 40 of about 656,257 (375)

Silver-modified polyniobotungstate for the visible light-induced simultaneous cleavage of C–C and C–N bonds

open access: yesPolyoxometalates, 2023
Silver-modified polyniobotungstate based on Nb/W mixed-addendum polyoxometalate with formula Ag9[P2W15Nb3O62]·21H2O (Ag-Nb/W) was synthesized and then characterized by various analytical and spectral techniques.
Shujun Li   +7 more
doaj   +1 more source

Capture cross sections of the acceptor level of iron-boron pairs in p-type silicon by injection-level dependent lifetime measurements [PDF]

open access: yes, 2001
Injection-level dependent recombination lifetime measurements of iron-diffused, boron-doped silicon wafers of different resistivities are used to determine the electron and hole capture crosssections of the acceptor level of iron-boron pairs in silicon.
Cuevas, Andres   +2 more
core   +1 more source

Development of accuracy enhancement system for boron meters using multisensitive detector for reactor safety [PDF]

open access: yes, 2020
Boric acid is used as a coolant for pressurized-water reactors, and the degree of burnup is controlled by the concentration of boric acid. Therefore, accurate measurement of the concentration of boric acid is an important factor in reactor safety.
Kim, Hee Reyoung, Sung, Si Hyeong
core   +1 more source

Use of Underground Mining Activities in Earthquake Search and Rescue Works

open access: yesInternational Journal of Economic and Environment Geology, 2023
Although the mining sector has the task of providing raw materials directly or indirectly to industrial establishments, it unfortunately contains great dangers and risks for its employees in terms of occupational health and safety ...
Süleyman Sırrı Sargın   +1 more
doaj   +1 more source

Boron Toxicity and Deficiency in Agricultural Plants

open access: yesInternational Journal of Molecular Sciences, 2020
Boron is an essential plant micronutrient taken up via the roots mostly in the form of boric acid. Its important role in plant metabolism involves the stabilization of molecules with cis-diol groups.
M. Brdar-Jokanović
semanticscholar   +1 more source

Stability of boron-doped graphene/copper interface: DFT, XPS and OSEE studies [PDF]

open access: yes, 2018
Two different types of boron-doped graphene/copper interfaces synthesized using two different flow rates of Ar through the bubbler containing the boron source were studied.
Boukhvalov, D. W.   +6 more
core   +1 more source

Boron Fullerenes: A First-Principles Study [PDF]

open access: yes, 2007
A family of unusually stable boron cages was identified and examined using first-principles local density functional method. The structure of the fullerenes is similar to that of the B12 icosahedron and consists of six crossing double-rings.
A N. Alexandrovaa   +15 more
core   +4 more sources

The crystal structure of poly[(μ 3-imidazolato-κ 3 N:N:N′)(tetrahydrofuran- κ 1 O)lithium(I)], C7H11LiN2O

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2021
C7H11LiN2O, monoclinic, P21/c (no. 14), a = 8.9067(1) Å, b = 8.6975(1) Å, c = 10.2398(1) Å, β = 101.900(3)°, V = 770.491(15) Å3, Z = 4, R gt(F) = 0.0338, wR ref(F 2) = 0.0925, T = 100 K.
Zapf Ludwig, Finze Maik
doaj   +1 more source

Synthesis and Strong Solvatochromism of Push-Pull Thienylthiazole Boron Complexes

open access: yesMolecules, 2022
The solvatochromic behavior of two donor-π bridge-acceptor (D-π-A) compounds based on the 2-(3-boryl-2-thienyl)thiazole π-linker and indandione acceptor moiety are investigated.
Martijn J. Wildervanck   +2 more
doaj   +1 more source

Single-Boron Catalysts for Nitrogen Reduction Reaction.

open access: yesJournal of the American Chemical Society, 2019
Boron has been explored as p-block catalysts for nitrogen reduction reaction (NRR) by density functional theory. Unlike transition metals, on which the active centers need empty d orbitals to accept the lone-pair electrons of the nitrogen molecule, the ...
Chuangwei Liu   +6 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy