Results 21 to 30 of about 386,764 (302)

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

Shouldering in B diffusion profiles in Si: Role of di-boron diffusion [PDF]

open access: yes, 2003
The role of di-boron diffusion in evolution of B diffusion profiles has been investigated. We find that boron pair (B-s-B-i) diffusion can become as important as boron-interstitial pair (B-s-Si-i) diffusion when both boron concentration and annealing ...
Goddard, William A., III   +1 more
core   +1 more source

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

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

Defect-induced B4C electrodes for high energy density supercapacitor devices

open access: yesScientific Reports, 2021
Boron carbide powders were synthesized by mechanically activated annealing process using anhydrous boron oxide (B2O3) and varying carbon (C) sources such as graphite and activated carbon: The precursors were mechanically activated for different times in ...
Özge Balcı   +5 more
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

Boron concentration profiling by high angle annular dark field-scanning transmission electron microscopy in homoepitaxial delta-doped diamond layers [PDF]

open access: yes, 2013
To develop further diamond related devices, the concentration and spatial location of dopants should be controlled down to the nanometer scale. Scanning transmission electron microscopy using the high angle annular dark field mode is shown to be ...
Alegre Salguero, María de la Paz   +5 more
core   +4 more sources

Boron isotope ratio determination in carbonates /via/ LA-MC-ICP-MS using soda-lime glass standards as reference material [PDF]

open access: yes, 2010
A new in situ method using LA-MC-ICP-MS (193 nm excimer laser) for the determination of stable boron isotope ratios (δ11B) in carbonates was developed.
Aggarwal   +39 more
core   +1 more source

Hard boron rich boron nitride nanoglasses

open access: yesJournal of the American Ceramic Society, 2017
Abstract Boron‐rich amorphous boron nitride (B x N 1− x , 0.55 ≤  x  ≤ 0.95) alloys ...
Ayşegül Ö. Çetin, Murat Durandurdu
openaire   +2 more sources

In situ detection of boron by ChemCam on Mars [PDF]

open access: yes, 2017
We report the first in situ detection of boron on Mars. Boron has been detected in Gale crater at levels Curiosity rover ChemCam instrument in calcium-sulfate-filled fractures, which formed in a late-stage groundwater circulating mainly in phyllosilicate-
Anderson   +86 more
core   +6 more sources

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