Results 191 to 200 of about 113,078 (269)

Valorization of Humins by Cyclic Levulinic Acid Production Using Polyoxometalates and Formic Acid

ChemSusChem, EarlyView.
In this work, a new catalytic route for the effective utilization of humin byproducts, enabling a cyclic synthesis of levulinic acid (LA) using formic acid (FA) as organocatalyst is proposed. Selective catalytic oxidation (SCO) of humins using the H5PV2Mo10O40 (HPA‐2) polyoxometalatecatalyst produces FA that can be isolated from the aqueous reaction ...
André Wassenberg, Tobias Esser, Maximilian J. Poller, Dorothea Voß, Jakob Albert   +4 more
wiley   +1 more source

A highly magnetized long-period radio transient exhibiting unusual emission features. [PDF]

Sci Adv
Men Y, McSweeney S, Hurley-Walker N, Barr E, Stappers B.   +4 more
europepmc   +1 more source

Can Isotopologues Be Used as Biosignature Gases in Exoplanet Atmospheres? [PDF]

Life (Basel), 2023
Glidden A, Seager S, Petkowski JJ, Ono S.   +3 more
europepmc   +1 more source

Short Wavelength Limit of the Dynamic Matsubara Local Field Correction

Contributions to Plasma Physics, EarlyView.
ABSTRACT We investigate the short wavelength limit of the dynamic Matsubara local field correction G˜q,zl$$ \tilde{G}\left(\mathbf{q},{z}_l\right) $$ of the uniform electron gas based on direct ab initio path integral Monte Carlo (PIMC) results over an unprecedented range of wavenumbers, q≲20qF$$ q\lesssim 20{q}_{\mathrm{F}} $$, where qF$$ {q}_{\mathrm{
Tobias Dornheim, Panagiotis Tolias, Zhandos A. Moldabekov, Jan Vorberger   +3 more
wiley   +1 more source

Common bile duct stone‐related parameters and their potential prognostic values for stone extraction requiring endoscopic papillary large balloon dilation

JGH Open, Volume 7, Issue 1, Page 16-23, January 2023., 2023
Endoscopic CBD stone removal is more difficult with stones larger than 2 mm than with distal CBD diameter or round or square‐shaped stones. Therefore, endoscopic large papillary balloon dilatation (ELPBD) is probably more required for stones larger than 2 mm than for distal CBD; likewise, round or square‐shaped stones are likely more required for ELPBD
Chote Wongkanong, Jayanton Patumanond, Thawee Ratanachu‐ek, Sunhawit Junrungsee, Apichat Tantraworasin   +4 more
wiley   +1 more source

Using geotagged facial expressions to visualize and characterize different demographic groups' emotion in theme parks. [PDF]

Sci Rep
Song X, Wu H, Jiang W, Zhi J, Xia X, Long Y, Su Q.   +6 more
europepmc   +1 more source

TheYBand at 1.035 Microns: Photometric Calibration and the Dwarf Stellar/Substellar Color Sequence [PDF]

, 2002
Lynne A. Hillenbrand, Jonathan B. Foster, S. E. Persson, K. Matthews   +3 more
openalex   +1 more source

Modelling Thomson Scattering in a Hydrogen Plasma at Stellar Interior Conditions Using the Hypernetted‐Chain Approach

Contributions to Plasma Physics, EarlyView.
ABSTRACT Under the extreme conditions found in small stars, where electron degeneracy and Coulomb coupling are significant, accurate modeling of Thomson scattering is crucial for determining opacity, a primary quantity for stellar energy transport.
Samuel Schumacher, Julian Lütgert, Dirk O. Gericke, Mandy Bethkenhagen, Tilo Döppner, Otto L. Landen, Nathaniel R. Shaffer, Charles E. Starrett, Dominik Kraus   +8 more
wiley   +1 more source

Economic transformation in Africa: What is the role of Chinese firms?

Journal of International Development, Volume 35, Issue 1, Page 43-64, January 2023., 2023
Abstract African countries face an economic transformation gap. Given the large and growing Chinese presence on the African continent, a fundamental question is whether Chinese firms contribute to, or hinder, economic transformation in Africa. This article conducts a scoping review of over one hundred sources, examining the pathways through which ...
Linda Calabrese, Xiaoyang Tang
wiley   +1 more source

Discovery of a high-velocity cloud of the Milky Way as a potential dark galaxy. [PDF]

Sci Adv
Liu XL, Xu JL, Jiang P, Zhu M, Zhang CP, Yu N, Xu Y, Guan X, Wang JJ.   +8 more
europepmc   +1 more source