Results 211 to 220 of about 4,153 (287)

Mechanism by Which Heat Treatment Influences the Acoustic Vibration Characteristics of Bamboo. [PDF]

Materials (Basel)
Song R, Li Y, Han S, Chen L, Yang S, Tian G, Liu X, Chen F, Jiang Z.   +8 more
europepmc   +1 more source

The Role of Conformational Preorganization in the Reactivity of cis‐1,2‐Dimesylate‐bis(benzyloxy)cyclooctane: An Activation Strain Perspective

ChemistryOpen, Volume 15, Issue 7, July 2026.
Selective monosubstitution in cyclooctane dimesylates is investigated by DFT calculations. Despite favorable SN2 conditions, the second substitution is suppressed due to increased activation strain and unfavorable conformational reorganization. The results reveal that intrinsic structural constraints, rather than external factors, govern reactivity ...
Selçuk Eşsiz, Emine Salamci
wiley   +1 more source

An Intelligent Model Predictive Control Framework for Low-Frequency Seismic Vibration Suppression in Active Isolation Systems. [PDF]

Sensors (Basel)
Fan Q, Wang R, Yan Z, Zhang Q, Xu C, Li M.   +5 more
europepmc   +1 more source

A Hydrogen‐Bonded Organic Biradical in the Gas Phase

Journal of Physical Organic Chemistry, Volume 39, Issue 7, July 2026.
Hydrogen‐bonded dimers of the TEMPOL radical are investigated by vibrational spectroscopy in the gas phase and shown to occur in at least two conformations, a stretched one with a strong hydrogen bond to the radical centre and a bent one with more pronounced London dispersion interactions. ABSTRACT Persistent organic radicals from the TEMPO family such
Dana Donnerstag, Elisabeth Sennert, Martin A. Suhm   +2 more
wiley   +1 more source

Nonlinear dynamics of curve-face gear transmission systems in two-parameter plane. [PDF]

PLoS One
Liu J, Zhang Y, Zhong W, Liu F, Yao Y.
europepmc   +1 more source

APPROACH TO SOLVE TORSIONAL VIBRATION DYNAMIC CHARACTERISTICS OF COMPLICATED SHAFT

Chinese Journal of Mechanical Engineering, 2005
openaire   +1 more source

Synthesis, Solubilization, and Photophysical Properties of Polyfluorinated Pentacene Dimers

Journal of Physical Organic Chemistry, Volume 39, Issue 7, July 2026.
The synthesis and photophysical analysis of polyfunctionalized pentacene dimers is described. Polyfluorination is employed to modulate the polarizability and to investigate the effects on the mechanism of singlet fission (SF). ABSTRACT A polyfluorinated pentacene dimer, linked with a 1,3‐diethynylphenylene spacer, was synthesized to investigate the ...
Zachary W. Schroeder, Phillip M. Greißel, Anna‐Sophie Wollny, Alexander J. Cross, Lan Chen, Günter F. P. Plny, Valentin Muller, Alexanne L. Hall, J. Terence Blaskovits, Dirk M. Guldi, Rik R. Tykwinski   +10 more
wiley   +1 more source

Predicting and Rationalizing Piezoelectricity in Racemic Bioorganic Molecular Crystals

Angewandte Chemie, Volume 138, Issue 26, 22 June 2026.
Racemic molecular crystals, composed of equal mixtures of chiral enantiomeric components, are predicted to exhibit significant piezoelectric responses and favourable mechanical flexibility. This study identifies organic and bioorganic racemates as promising candidates for sustainable, lead‐free materials, enabling next‐generation applications in energy
Shubham Vishnoi, Sarah Guerin
wiley   +2 more sources

Design and Fabrication of a Dual-Axis MEMS Electrostatic Micromirror Based on a Planar Comb Drive. [PDF]

Micromachines (Basel)
Li M, Jiao W, Huang K, Wang B, Dai Z, Gao Y, Cao H, Xie H.   +7 more
europepmc   +1 more source

Morphological Control of Aurophilic Chains of Gold(I) Dithiolate Dimers With Alkali and Alkali Earth Cations

Chemistry – A European Journal, Volume 32, Issue 24, 23 June 2026.
Luminescent coordination polymers of Group 1 (Li, K, Cs) and 2 (Mg─Ba) cations with gold(I) iso‐maleonitriledithiolate ({Au2[S2C = C(CN)2]}2−) units were prepared; 1‐D aurophilic chains are present in all cases. The structures strongly depend on cation charge and size, with N‐cyano coordination observed in the Gp 1 and larger Gp 2 cations. Increasingly
Jefferson A. Pells, William W. L. Ho, Daniel B. Leznoff   +2 more
wiley   +1 more source