Results 51 to 60 of about 11,878 (168)

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, EarlyView.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source

Elemental Analysis of Catalysts in a Fixed‐Bed Reactor by Laser‐Induced Breakdown Spectroscopy

ChemCatChem, EarlyView.
The “Elemental Composition” provides information about promoters and poisons found in heterogeneous catalysts. Access to this piece of information under reaction conditions remains yet an unsolved challenge. This work explores the potential and limitations of laser‐induced breakdown spectroscopy (LIBS) as an in situ reactor diagnostic technique ...
Diego Espinoza, Hemanth Appala, Oliver Korup, Raimund Horn   +3 more
wiley   +1 more source

Recent Progress in the Preparation of Graphdiyne‐Based Materials

ChemistryEurope, EarlyView.
Graphdiyne (GDY) has emerged as a versatile carbon allotrope for cutting‐edge applications. To fully unlock the distinguished characteristics of GDY‐based materials, precise preparation is vital for structure control, which largely shapes the materials’ properties.
Ruiqiao Wu, Xinlong Fu, Changshui Huang, Jingchi Gao, Jingxiang Yang, Yuliang Li   +5 more
wiley   +1 more source

Corn cob pyrolysis: A systematic literature review of methods and applications

The Canadian Journal of Chemical Engineering, EarlyView.
Mapping the research landscape of corn cob pyrolysis. Abstractas The agricultural sector is experiencing a surge in waste generation due to population growth, creating an urgent need to convert byproducts into value‐added products. Maize (Zea mays L.), a leading global crop, produces significant byproducts, such as corn cob, which are often undervalued.
Vilmar Steffen, Maiquiel Schmidt de Oliveira, Lais da Silva Pego Hericks, Schaline Winck Alberti, Marlon Henrique da Silva, Edson Antonio da Silva   +5 more
wiley   +1 more source

Introducing a mathematical workflow for scaling‐up the cyclic solvent injection process: Experimental studies and dimensional analysis utilizing Buckingham pi theorem

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Cyclic solvent injection (CSI) is an effective enhanced oil recovery (EOR) technique with several economic and environmental benefits. However, the successful implementation of CSI at commercial scales requires reliable scaling criteria. In this study, CSI has been formulated comprehensively by integrating material balance, mass transfer, and ...
Ali Cheperli, Farshid Torabi, Morteza Sabeti, Yousef Shafiei   +3 more
wiley   +1 more source

Donor–Acceptor Interactions of C60F18 with Polycyclic Aromatic Hydrocarbons: Size Effects in Bulk Crystallization and Surface Constraints

ChemPlusChem, EarlyView.
Donor–acceptor (D/A) interactions between spheroidal C60F18 and three planar polycyclic aromatic hydrocarbons (PAHs)—coronene (CORO), perylene , and pyrene—show a strong dependence on PAH size. X‐Ray diffraction reveals increasing layered stacking (either D/A/D/A or D/A/A/D/A/A).
Nicholas J. DeWeerd, Sebastian Balser, Long K. San, Rogger Palacios‐Rivera, Steven H. Strauss, Esther Barrena, Yu‐Sheng Chen, Carmen Ocal, Daniel Martin‐Jimenez, Olga V. Boltalina   +9 more
wiley   +1 more source

Formosulfathiazole: A Structural Revision

ChemPlusChem, EarlyView.
Formosulfathiazole (FSTz), a synthetic drug developed in 1948, is used to treat bacterial and protozoal infections in animals by slowly releasing sulfathiazole and formaldehyde. Structural analysis revealed that, contrary to earlier beliefs, FSTz features a well‐defined cyclophane cyclodimeric structure rather than an undefined polymer ...
Claudio Maestri, Toni Grell, Fabio Travagin, Christian R. Göb, Michele Castaldi, Ivana Miletto, Geo Paul, Silvia Zampini, Marco Vandone, Valentina Colombo, Giovanni B. Giovenzana   +10 more
wiley   +1 more source

Optimization of Parallel Artificial Liquid Membrane Extraction for the Determination of Over 50 Psychoactive Substances in Oral Fluid Through UHPLC–MS/MS

Drug Testing and Analysis, EarlyView.
This study is related to the development of a microextraction method for the determination of 56 psychoactive substances in oral fluid. Sample clean‐up is obtained by parallel artificial liquid membrane extraction and analyzed by liquid chromatography–tandem mass spectrometry.
Martina Croce, Camilla Montesano, Ilenia Bracaglia, Francesco Bartolini, Marcello Mascini, Dario Compagnone, Manuel Sergi   +6 more
wiley   +1 more source

Multiphysics modeling of coupling compressed‐air energy storage‐thermal storage in salt caverns: An approach to insoluble sediment as heat reservoir feasibility analysis

Deep Underground Science and Engineering, EarlyView.
This study investigates the feasibility of utilizing insoluble sediments in salt caverns for short‐ and long‐term thermal energy storage applications. The analysis revealed three key thermal characteristics of these sediments: (1) thermal shock resistance, (2) temperature differential compensation capability during air injection, and (3) high ...
Tsunming Wong, Yingjie Wei, Yuxin Jie, Xiangyang Zhao, Jiamin Zhang   +4 more
wiley   +1 more source

Identification of neural crest and melanoma cancer cell invasion and migration genes using high‐throughput screening and deep attention networks

Developmental Dynamics, EarlyView.
Abstract Background Cell migration and invasion are well‐coordinated in development and disease but remain poorly understood. We previously showed that the neural crest (NC) cell migratory wavefront shares a 45‐gene panel with other cell invasion phenomena.
J. C. Kasemeier‐Kulesa, S. Martina Perez, R. E. Baker, P. M. Kulesa   +3 more
wiley   +1 more source