Results 61 to 70 of about 116,969 (285)

Phase-field approach to polycrystalline solidification including heterogeneous and homogeneous nucleation [PDF]

, 2008
Advanced phase-field techniques have been applied to address various aspects of polycrystalline solidification including different modes of crystal nucleation.
Abramoff M D, Bouissou Ph, Cahn R V, Christian J W, Geil P H, Gránásy L, Gránásy L, Gunton J D, Gurvinder Bansel, Gyula I Tóth, György Tegze, Howe J M, Jin L-W, Khan S R, Kobayashi R, Korn G A, Lewis D, Li S W, László Gránásy, László Környei, Napolitano R E, Oxtoby D W, Provatas N, Pusztai T, Pusztai T, Pusztai T Környei L Bansel G Gránásy L, Shelf C A, Shepilov M P, Tamás Pusztai, Tanaka H, Tegze G Bansel G Toth G I Pusztai T Fan Z Gránásy L, Tegze G Gránásy L Gandin C A Bellet M, Tupper P F, van der Veen J F, Warren J A, Woodhead-Galloway J, Zhungyun Fan   +36 more
core   +2 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Reconstruction of 2D Al Ti on TiB in an aluminium melt [PDF]

, 2012
It has been widely considered that Al Ti is involved in the aluminium nucleation on TiB , although the mechanism has not been fully understood. In this paper molecular dynamics has been conducted to investigate this phenomenon at an atomistic scale.
Allen M P, Cibula A, Frenkel D, Jin Z H, Johnsson M, Kittel C, Long Y, Pettifor D G, Quested T E, Schumacher P, T Qin, Yanfeng H, Z Fan   +12 more
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Enhanced thermal insulation and mechanical properties of Y-α-SiAlON porous ceramics with Sr doping

Journal of Materials Research and Technology, 2023
α-SiAlON is a potential wave-transmittance material for radome materials, yet the comprehensive properties need to be improved. In this study, a series of SrxY0.5-xSi12-(m + n) Alm +nOnN16-n (x = 0.02, 0.04, 0.06, and 0.08) porous ceramics with ...
Fengying Fan, Jie Xu, Runwu Yang, Lang Lin, Hengchang Wang, Yueqi Shao, Ping Zhang, Feng Gao   +7 more
doaj   +1 more source

Universality of Tip Singularity Formation in Freezing Water Drops [PDF]

, 2014
A drop of water deposited on a cold plate freezes into an ice drop with a pointy tip. While this phenomenon clearly finds its origin in the expansion of water upon freezing, a quantitative description of the tip singularity has remained elusive.
Brunet, Philipe, Colinet, Pierre, Enriquez, Oscar R., Marin, Alvaro G., Snoeijer, Jacco H.   +4 more
core   +2 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Homogenous solidification of undercooled Cu-37.4 wt%Pb monotectic melt

AIP Advances, 2018
The solidification behavior and solidification structure evolution of Cu-37.4wt%Pb undercooled melt under different undercoolings were studied by the combination of molten glass purification and cyclic superheating. With the increase in the undercooling,
Xiaosi Sun, Weixin Hao, Teng Ma, Guihong Geng   +3 more
doaj   +1 more source

Generation of defects and disorder from deeply quenching a liquid to form a solid

, 2015
We show how deeply quenching a liquid to temperatures where it is linearly unstable and the crystal is the equilibrium phase often produces crystalline structures with defects and disorder.
A. Couairon, A. Hari, A. Jusufi, A. Nikoubashman, A.A. Louis, A.A. Louis, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Archer, A.J. Moreno, B.M. Mladek, B.M. Mladek, B.M. Mladek, B.M. Mladek, C.N. Likos, C.N. Likos, C.N. Likos, C.N. Likos, C.N. Likos, C.N. Likos, D. Pini, D.A. Lenz, D.W. Oxtoby, D.W. Oxtoby, E. Ben-Jacob, F. Liu, F. Trudu, G. Dee, H. Emmerich, I.O. Götze, I.O. Götze, J. Dautenhahn, J.F. Lutsko, J.P. Hansen, L.Y. Chen, M. Berg de, M. Camargo, M. Carta, M.J. Robbins, P.G. Bolhuis, P.G. Debenedetti, P.K. Galenko, R. Evans, R. Evans, R.P. Sear, S. Prestipino, S. Teeffelen van, S. Teeffelen van, S.D. Overduin, S.D. Overduin, U.M.B. Marconi, U.M.B. Marconi, W. Klein, W. Saarloos van   +59 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source