Results 1 to 10 of about 16,306,003 (350)

Phase Separation Drives Heterochromatin Domain Formation [PDF]

Biophysical Journal, 2017
Constitutive heterochromatin is an important component of eukaryotic genomes that has essential roles in nuclear architecture, DNA repair and genome stability, and silencing of transposon and gene expression. Heterochromatin is highly enriched for repetitive sequences, and is defined epigenetically by methylation of histone H3 at lysine 9 and ...
Strom, Amy R, Emelyanov, Alexander V, Mir, Mustafa, Fyodorov, Dmitry V, Darzacq, Xavier, Karpen, Gary H   +5 more
semanticscholar   +8 more sources

Phase formation capability and compositional design of β-phase multiple rare-earth principal component disilicates

Nature Communications, 2023
A key strategy to design environmental barrier coatings focuses on doping multiple rare-earth principal components into β-type rare-earth disilicates (RE_2Si_2O_7) to achieve versatile property optimization.
Yixiu Luo, Luchao Sun, Jiemin Wang, Tiefeng Du, Cui Zhou, J Zhang, Jingyang Wang   +6 more
semanticscholar   +1 more source

A Study on the Effects of Liquid Phase Formation Temperature and the Content of Sintering Aids on the Sintering of Silicon Nitride Ceramics

Crystals, 2023
Due to its high bonding energy and low self-diffusion coefficient, silicon nitride (Si3N4) ceramics cannot form a dense structure with prolonged high-temperature insulation or by raising the sintering temperature.
Li He, Niansheng Huang, Donglin Lu, P.‐F. Sheng, Wenjing Zou   +4 more
semanticscholar   +1 more source

The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source

Nature Chemistry, 2022
Iodine is a reactive trace element in atmospheric chemistry that destroys ozone and nucleates particles. Iodine emissions have tripled since 1950 and are projected to keep increasing with rising O_3 surface concentrations.
Henning Finkenzeller, Siddharth Iyer, Xucheng He, M. Simon, T. Koenig, Christopher F. Lee, R. Valiev, V. Hofbauer, A. Amorim, Rima Baalbaki, A. Baccarini, L. Beck, D. Bell, L. Caudillo, Dexian Chen, R. Chiu, Biwu Chu, L. Dada, J. Duplissy, M. Heinritzi, D. Kemppainen, Changhyuk Kim, J. Krechmer, A. Kürten, A. Kvashnin, Houssni Lamkaddam, C. P. Lee, K. Lehtipalo, Zijun Li, V. Makhmutov, H. Manninen, Guillaume Marie, R. Marten, R. Mauldin, B. Mentler, Tatjana Müller, T. Petäjä, M. Philippov, Ananth Ranjithkumar, B. Rörup, Jiali Shen, D. Stolzenburg, C. Tauber, Y. J. Tham, A. Tomé, Miguel Vazquez-Pufleau, A. Wagner, Dongyu S. Wang, Mingyi Wang, Yonghong Wang, Stefan K. Weber, W. Nie, Yusheng Wu, M. Xiao, Q. Ye, Marcel Zauner-Wieczorek, A. Hansel, U. Baltensperger, J. Brioude, J. Curtius, N. Donahue, I. E. Haddad, R. Flagan, M. Kulmala, J. Kirkby, M. Sipilä, D. Worsnop, T. Kurtén, M. Rissanen, R. Volkamer   +69 more
semanticscholar   +1 more source

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

Buildings, 2021
In this research, a phase formation in CaO–SiO2–Al2O3–H2O binding system under hydrothermal conditions was studied. The novelty of this article lies in the quantitative full-profile X-ray diffraction (XRD) analysis used to determine kinetics of mineral ...
Viktoriya Nelubova, Valeria Strokova, Roman Fediuk, Mugahed Amran, Nikolai Vatin, Yuriy Vasilev   +5 more
doaj   +1 more source

Two-phase galaxy formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
We propose and test a scenario for the assembly and evolution of luminous matter in galaxies which substantially differs from that adopted by other semianalytic models. As for the dark matter (DM), we follow the detailed evolution of halos within the canonical LCDM cosmology using standard Montecarlo methods.
Cook, M, . Lapi, A., Granato, G. L.
openaire   +4 more sources

Review and Stress Analysis on the Lithiation Onset of Amorphous Silicon Films

Batteries, 2023
This work aims to review and understand the behavior of the electrochemical lithiation onset of amorphous silicon (a-Si) films as electrochemically active material for new generation lithium-ion batteries.
Kai Zhang, Erwin Hüger, Yong Li, Harald Schmidt, Fuqian Yang   +4 more
doaj   +1 more source

Phase formation in MgO-C refractories with different antioxidants

, 2021
The application of Al or Si as antioxidants in MgO-C refractories leads to the in situ formation of new phases. Due to uncertainties regarding phase formation in some references four different test series were heat treated from 800 to 1600 °C under ...
C. Atzenhofer, H. Harmuth
semanticscholar   +1 more source

Morphology, phase and chemical composition of the nanostructures formed in the systems containing lanthanum, cerium, and silver

Хімія, фізика та технологія поверхні, 2021
  X-ray phase and thermogravimetric analysis, scanning electron microscopy and energy-dispersion spectroscopy were used to study the products of phase formation during the precipitation of lanthanum and cerium salts in the presence of silver nitrate ...
O, M. Lavrynenko, O. Yu. Pavlenko, M. N. Zahornyi, S. F. Korichev   +3 more
doaj   +1 more source

THE TWO PHASES OF GALAXY FORMATION [PDF]

The Astrophysical Journal, 2010
13 pages, 13 figures, accepted for publication in ...
Oser, L., Ostriker, J., Naab, T., Johansson, P., Burkert, A.   +4 more
openaire   +3 more sources