Results 51 to 60 of about 129,637 (227)

Gr\"obner Bases over Algebraic Number Fields

, 2015
Although Buchberger's algorithm, in theory, allows us to compute Gr\"obner bases over any field, in practice, however, the computational efficiency depends on the arithmetic of the ground field.
Boku, Dereje Kifle, Decker, Wolfram, Fieker, Claus, Steenpass, Andreas   +3 more
core   +1 more source

Interfacial and Ligand Dual Engineering Toward Energy‐Saving Hydrogen Production Coupled with Sulfion Degradation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Using a coordinated regulation strategy of interface and ligand, we developed a nickel cobalt sulfide/carboxylate ligand‐modified nickel cobalt hydroxide composite (NiCo‐S/NiCo‐OH‐CL) with abundant heterointerfaces. Owing to the porous network, sulfur‐repellent hydrophilic surface, and dual electronic structure regulation, the coupled electrolysis ...
Jinghui Guo, Min Zhou, Yang Shen, Guo Yu, Qijun Wang, Heyan Yu, Leyuan Wang, Feng Wang, Wei Yang, Hairen Wang, Yu Ding, Yan Zhao, Zhaoyang Wang   +12 more
wiley   +1 more source

Use of Recycle for H₂S Removal by MDEA Scrubbing in IGCC Systems

Chemical Engineering Transactions, 2017
This work focuses on the analysis of the H2S removal section of an Acid Gas Removal (AGR) station in an Integrated Gasification Combined Cycle (IGCC) plant. The AGR station is composed of one absorption section for H2S and one absorption section for CO2.
S. Moioli, L. Pellegrini, A. Giuffrida
doaj   +1 more source

The quantization of gravity in globally hyperbolic spacetimes

, 2013
We apply the ADM approach to obtain a Hamiltonian description of the Einstein-Hilbert action. In doing so we add four new ingredients: (i) We eliminate the diffeomorphism constraints.
Gerhardt, Claus
core   +1 more source

The impact of time‐to‐recurrence on post‐recurrence mortality in stage I–III colorectal cancer: A nationwide Danish cohort study

International Journal of Cancer, EarlyView.
What's New? Colorectal cancer (CRC) recurrence is a significant threat to survival despite surgery with curative intent. The characteristics of CRC recurrence, however, remain poorly understood, challenging postoperative surveillance. This study investigated post‐recurrence mortality and associations between time‐to‐recurrence and mortality among stage
Jesper Nors, Kåre Andersson Gotschalck, Rune Erichsen, Claus Lindbjerg Andersen   +3 more
wiley   +1 more source

The impact of physical activity on psychological distress in young people: An analysis of longitudinal data from the Millennium Cohort Study using causal machine learning

JCPP Advances, EarlyView.
Using causal machine learning, we estimated the causal effect of meeting government guidelines on physical activity on psychological distress in young people. Whilst observing no overall impact, we did identify some groups who benefit relatively more from meeting the physical activity guidelines, including males.
Lewis W. Paton, Noemi Kreif, Lauren M. E. Aylott, Philip Kerrigan, Clau Nader, Lina Gega, Paul A. Tiffin   +6 more
wiley   +1 more source

A comparison between Claus and THIOPAQ sulfur recovery techniques in natural gas plants

Journal of Engineering and Applied Science
A sulfur recovery process is one of the most important processes in the oil and gas industry to get rid of hydrogen sulfide (H2S) which is produced from the acid gas removal process of sour natural gas to convert it into sweet natural gas.
Mahmoud Farag Abdel Hamid, Tarek M. Aboul-Fotouh, Masoud A. El-Shafie   +2 more
doaj   +1 more source

Tunneling spectroscopy of superconducting MoN and NbTiN grown by atomic layer deposition

, 2013
A tunneling spectroscopy study is presented of superconducting MoN and Nb$_{0.8}$Ti$_{0.2}$N thin films grown by atomic layer deposition (ALD). The films exhibited a superconducting gap of 2meV and 2.4meV respectively with a corresponding critical ...
Altin, Serdar, Becker, Nicholas G., Cao, Chaoyue, Claus, Helmut, Groll, Nickolas, Klug, Jeffrey A., Pellin, Michael J., Proslier, Thomas, Zasadzinski, John F.   +8 more
core   +1 more source

Sequelae of child maltreatment: Umbrella synthesis of 148 meta‐analyses on the mental health correlates

JCPP Advances, EarlyView.
Our umbrella synthesis found strong, often equivalent, associations between child maltreatment and all examined mental health difficulties. Different types of maltreatment appear to have comparably negative effects on mental health. If replicated, these findings may cause us to reconsider conventional wisdom that suggests some forms of CM are less ...
Barry Coughlan, Robbie Duschinsky, Marian J. Bakermans‐Kranenburg, Lianne Bakkum, Guy C. M. Skinner, Alfred Markham, Helen Beckwith, Marinus H. van Ijzendoorn   +7 more
wiley   +1 more source

Claus waste-derived TiO2 coupled with UiO-66 for an S-scheme heterojunction with enhanced photocatalytic activity

Scientific Reports
This research investigates the decoration of UiO-66 with TiO2 derived from recycling units of the gas refinery Claus process, using a solvothermal technique.
Maedeh Kouhfallah, Bita Ayati, Habibollah Younesi, Hossein Shekari   +3 more
doaj   +1 more source