Results 51 to 60 of about 26,318 (151)

Mechanism of the Photodecomposition of Stable Triarylmethyl Radicals

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Photolysis of luminescent chlorinated trityl radicals was studied with density functional theory and the decomposition products were isolated and characterized. It proceeds by a 5‐electron electrocyclization then a 1,8‐sigmatropic chloride shift, forming non‐emissive, less stable fluorenyl radicals.
Hannah E. Hackney, Claude Y. Legault, Hatem M. Titi, Dmytro F. Perepichka   +3 more
wiley   +2 more sources

On convergence of solutions of fractal Burgers equation toward rarefaction waves

, 2007
In the paper, the large time behavior of solutions of the Cauchy problem for the one dimensional fractal Burgers equation $u_t+(-\partial^2_x)^{\alpha/2} u+uu_x=0$ with $\alpha\in (1,2)$ is studied.
Biler P., Changxing Miao, Grzegorz Karch, Il'in A. M., Xiaojing Xu   +4 more
core   +2 more sources

Elimination of FRDL1, a xylem‐located citrate transporter, confers tolerance to excess unchelated ferrous iron through an exclusion mechanism in rice (Oryza sativa L.)

Plant Biology, EarlyView.
Knock‐down of a xylem‐localized citrate transporter, FRDL1, reduces foliar iron concentrations and leaf symptoms under excess ferrous iron stress in rice. Abstract Iron (Fe) toxicity is a common agricultural problem that limits rice yield in various regions of Southeast Asia and Africa.
Y. Ueda
wiley   +1 more source

Analysis of Dynamic Response and Ultimate Strength for Box Girder under Bending Moment

Journal of Marine Science and Engineering, 2023
The box girder can be seen as a kind of simplified ship structure that can withstand a vertical bending moment. Dynamic loads play an important role in structural safety analysis, such as ship bow slamming during harsh sea conditions.
Gui-Jie Shi, De-Yu Wang, Fu-Hua Wang, Shi-Jian Cai   +3 more
doaj   +1 more source

Spallative ablation of dielectrics by X-ray laser

, 2009
Short laser pulse in wide range of wavelengths, from infrared to X-ray, disturbs electron-ion equilibrium and rises pressure in a heated layer. The case where pulse duration $\tau_L$ is shorter than acoustic relaxation time $t_s$ is considered in the ...
A. Miotello, A. Ritucci, A. Ustione, A. Y. Faenov, A.K. Upadhyay, A.Y. Vorobyev, A.Ya. Faenov, A.Ya. Faenov, B. Rethfeld, B.C. Stuart, D. Linde von der, D. Puerto, F. Quere, G. Baldacchini, G. Baldacchini, G. Tomassetti, I. Y. Skobelev, J. Bonse, J. Chalupsky, J. Krzywinski, K. Sokolowski-Tinten, K. Sokolowski-Tinten, L.D. Landau, L.V. Zhigilei, M. Ishino, M. Kishimoto, M. Nishikino, M. Nishikino, M. Tanaka, M.B. Agranat, N. A. Inogamov, N. Stojanovic, N.A. Inogamov, N.A. Inogamov, N.A. Inogamov, N.A. Inogamov, P. Lorazo, S. Eliezer, S. I. Anisimov, S. V. Bulanov, T. A. Pikuz, T. Kawachi, V. A. Khokhlov, V. E. Fortov, V. V. Shepelev, V. V. Zhakhovsky, V.E. Fortov, V.V. Zhakhovskii, V.V. Zhakhovskii, V.V. Zhakhovskii, W.-L. Chan, W.H. Duff, Y. Fukuda, Y. Kato, Y. V. Petrov   +54 more
core   +1 more source

Phase Relations and Melting of SiO2 Under Mantle Conditions Determined From Machine Learning Potentials

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract SiO2 is a fundamental component of planetary interiors, yet its high‐pressure melting and phase relations remain uncertain. We develop a machine learning potential with first‐principles accuracy and perform large‐scale two‐phase coexistence simulations to determine the melting curves of stishovite, post‐stishovite, and seifertite up to 160 GPa
Xin Deng, Jie Deng, Michael J. Walter, Yingwei Fei, Jing Yang, R. E. Cohen   +5 more
wiley   +1 more source

(Poly)Borylated Species as Modern Reactive Groups toward Unusual Synthetic Applications

Angewandte Chemie, Volume 138, Issue 10, 2 March 2026.
In this review, we spotlight recent breakthroughs in α‐polyboron‐substituted carbon‐centered intermediates (carbanion, carbocation, radical, and carbene) and polyborylated alkenes. By bridging fundamental reactivity with the application potential of these extraordinary species, we hope this review will serve as a roadmap for harnessing these unique ...
Nadim Eghbarieh, Nicole Hanania, Pinaki Nad, Tipu Alam, Tamir Kish, Ahmad Masarwa   +5 more
wiley   +2 more sources

MicroRNA‐Mediated Regulation of Brain Aging Hallmarks: Implications for Neurodegeneration and Neural Recovery

Brain and Behavior, Volume 16, Issue 5, May 2026.
Hallmarks of brain aging regulated by microRNAs (miRNAs). This graphical abstract illustrates the central role of miRNAs in coordinating key biological processes associated with brain aging. miRNAs regulate multiple interconnected hallmarks, including genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis and impaired ...
Mustafa T. Ardah, Pareshkumar N. Patel, Omayma Salim Waleed, Jamuna K. V., Vandana Tripathi, L. Lakshmi, Rajashree Panigrahi, Manoj Kumar Mishra   +7 more
wiley   +1 more source

Creep constitutive model considering nonlinear creep degradation of fractured rock

International Journal of Mining Science and Technology
Stability analysis of underground constructions requires a model study of rock masses’ long-term performance. Creep tests under different stress conditions was conducted on intact granite and granite samples fractured at 30° and 45° angles.
Wang Chunping, Liu Jianfeng, Chen Liang, Liu Jian, Wang Lu, Liao Yilin   +5 more
doaj   +1 more source

Determination of the parameters of rock viscoelastic creep model and analysis of parameter degradation

Scientific Reports, 2023
Different stress creep tests are conducted on the sandstone in this study to better describe the creep properties of rocks under different stress states. A model that describes the rock creep process is established.
Zhiming Zheng, Yu Yang, Cheng Pan
doaj   +1 more source