Results 111 to 120 of about 37,802 (311)

Alkyl Bismuth Cations: Synthesis, Characterization, and Application as Z‐Type Ligands

Chemistry – A European Journal, EarlyView.
Rare examples of alkyl bismuth cations [BiR2(SbF6)] are presented, including cyclopropyl ligands and a bismacyclic structure. The bismuth‐centered Lewis acids act as Z‐type ligands toward the electron‐rich platinum atom in [Pt(PCy3)2], generating a set of metal‐only Lewis pairs. The structural and spectroscopic properties of these rare types of bismuth
Johannes Schwarzmann, Joel Nitzsche, Cissie Slopianka, Liva Hartmann, William Augustinov, Alexandre Gagnon, Carsten von Hänisch, Crispin Lichtenberg   +7 more
wiley   +1 more source

Variable Temperature Studies of Two Calcium Uranates α‐Ca3UO6 and Ca2UO5

Chemistry – A European Journal, EarlyView.
The structures and thermal responses of the calcium uranates α‐Ca3UO6 and Ca2UO5 were investigated using in situ synchrotron x‐ray diffraction and neutron powder diffraction. Despite the very similar chemical compositions, the structural response of the two calcium uranates is shown to be complex and varied.
Maria K. Nicholas, Timothy A. Ablott, Caleb J. Bennett, Bryce G. Mullens, Helen E. Maynard‐Casely, Wen Liang Tan, Jeremy L. Wykes, Yingjie Zhang, Brendan J. Kennedy   +8 more
wiley   +1 more source

Monte Carlo-Based Spatial Optimization of Simulation Plots for Forest Growth Modeling

ISPRS International Journal of Geo-Information
Accurate placement and geometry of simulation plots are essential for spatially explicit modeling of forest ecosystems. This study introduces a Monte Carlo-based approach for optimizing the spatial alignment of simulation plots with their source polygons,
Milan Koreň, Peter Márton, Mosab Khalil Algidail Arbain, Peter Valent, Roman Sitko, Marek Fabrika   +5 more
doaj   +1 more source

Per-Field Irrigated Crop Classification in Arid Central Asia Using SPOT and ASTER Data

Remote Sensing, 2010
The overarching goal of this research was to explore accurate methods of mapping irrigated crops, where digital cadastre information is unavailable: (a) Boundary separation by object-oriented image segmentation using very high spatial resolution (2.5–5 m)
Christopher Conrad, Sebastian Fritsch, Julian Zeidler, Gerd Rücker, Stefan Dech   +4 more
doaj   +1 more source

Durene conversion in a methanol‐to‐jet process: Exploring conversion at 150–350°C over different acid catalysts

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Acid catalyzed conversion of durene by isomerization, disproportionation, and transalkylation is of interest to the development of a methanol‐to‐jet process to reduce the amount of durene in the kerosene. It was of interest to determine whether durene conversion could be performed at a temperature lower than 350°C.
Aida G. Velasco Ortiz, Risha Raju, Arno de Klerk   +2 more
wiley   +1 more source

Resource‐Efficient Electrodes with Metallized Woven‐Glass‐Grid Current Collectors for Lithium‐Ion Batteries

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The use of metallized glass‐based woven‐grids instead of metal foils as current collectors for LIBs leads to a significant reduction in metal usage by over 90 % and weight savings of more than 80 %, resulting in an 11 % increase in specific energy at the cell level. Abstract A novel class of resource‐efficient, woven‐glass‐grid current collectors (CCs)
Yen‐Ming Li, Mohammadjafar Momeni, Huy Nguyen Dang Duc, Suvi von Bahder, Friedrich Roth, Wolfram Münchgesang, Manfred Danziger, Winfried Voitus, Dominik Nuss, Cornelia Sennewald, Tilmann Leisegang   +10 more
wiley   +1 more source

Three dimensional topological field theories and Nahm sum formulas

SciPost Physics
It is known that a large class of characters of 2d conformal field theories (CFTs) can be written in the form of a Nahm sum. In [D. Zagier, in Frontiers in number theory, physics, and geometry II, Springer, Berlin (2007)], D.
Dongmin Gang, Heeyeon Kim, Byoungyoon Park, Spencer Stubbs
doaj   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source

High‐Entropy Metal Phosphide for Efficient Hydrogen Conversion Reactions

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this study, high‐entropy metal phosphide nanoparticles were synthesized via a cation‐binding phosphate–resin heating treatment strategy. Mn incorporation in Co0.62Fe0.20Ni0.14Cu0.23Mn0.38P effectively optimized the electronic structure, accelerated electron transfer among metal sites, lowered the free energy of hydrogen adsorption/desorption, and ...
Jinliang Zhu, Junfeng Ruan, Wangzhi Wu, Yujin Huang, Xijun Liu, Zhijie Chen, Bing‐Jie Ni   +6 more
wiley   +1 more source

Gold(I) Phosphine/Phosphido‐Borohydride Complexes

European Journal of Inorganic Chemistry, EarlyView.
Synthesis, structure, and electrochemical characteristics of a homologous series of gold(I) complexes featuring phosphine and phosphido–borohydride ligands. A homologous series of linear, mononuclear gold(I) phosphine/phosphido‐borohydride complexes, encompassing [Au(PR3)2]+ 1, [Au(PR3)(PR2BH3)] 2 and [Au(PR2BH3)2]– 3 (R = tBu, Ad), has been prepared ...
Matthew J. G. Sinclair, Marc‐Etienne Moret, Luke A. Wilkinson, Adrian B. Chaplin   +3 more
wiley   +1 more source