Results 31 to 40 of about 1,148 (167)

Snapshots of Motion: A Novel Structural Intermediate Reveals Conserved Dynamics in Archaeal DNA Ligases

open access: yesProteins: Structure, Function, and Bioinformatics, Volume 94, Issue 6, Page 1245-1258, June 2026.
ABSTRACT We present the first x‐ray crystallographic structural evidence of an archaeal DNA ligase showing the AMP covalent adduct together with further cofactor hydrolysis, capturing a transient intermediary in the first step of the ligation reaction, triggered by the pyrophosphate hydrolysis.
A. X. Quintana‐Armas   +3 more
wiley   +1 more source

Forecasting Carbon Prices: A Literature Review

open access: yesJournal of Forecasting, Volume 45, Issue 2, Page 496-529, March 2026.
ABSTRACT Carbon emissions trading is utilized by a growing number of states as a significant tool for addressing greenhouse gas emissions (GHG), global warming problem and the climate crisis. Accurate forecasting of carbon prices is essential for effective policy design and investment strategies in climate change mitigation.
Konstantinos Bisiotis   +2 more
wiley   +1 more source

Mapping Quantum Computing Techniques for NP‐Hard Problems in Operations Management and Operations Research

open access: yesEngineering Reports, Volume 8, Issue 2, February 2026.
Quantum computing techniques such as Quantum Annealing and Quadratic Unconstrained Binary Optimization are effectively solving NP‐hard problems in operations management and research, particularly in logistics, manufacturing, and finance. This study maps these applications to present a framework for future adoption across industries. ABSTRACT This study
Daniel Bouzon Nagem Assad   +3 more
wiley   +1 more source

El liderazgo de la diplomacia latinoamericana y el Caribe en el desarme nuclear desde la perspectiva del Tratado sobre la Prohibición de las Armas Nucleares [PDF]

open access: yes, 2022
Objetivo general: Conocer y analizar las iniciativas de la diplomacia latinoamericana y caribeña en materia de desarme nuclear, que han contribuido para evitar las consecuencias de las armas nucleares. Objetivos específicos:
Rodríguez Pérez, Christine Jailene
core   +1 more source

Hiroshima-Nagasaki, Teherán: la amenaza nuclear

open access: yesRealidad, 2018
El quincuagésimo aniversario de la detonación de las bombas atómicas en las ciudades japonesas de Hiroshima y Nagasaki coincide con un momento en el cual la posesión de tecnología nuclear por parte de Irán es vista por los EE.UU.
Francisco Javier Ibisate
doaj   +1 more source

Common misconceptions in crystallography and crystal optics

open access: yesJournal of Applied Crystallography, Volume 59, Issue 1, Page 239-247, February 2026.
Six recurrent misconceptions in crystallography, some involving mineral and crystal optics, are analyzed and discussed. The explanation of these and similar misconceptions could serve as educational resources for teachers.Did you know that an X‐ray diffraction pattern is not a spectrum?
Lluís Casas
wiley   +1 more source

Forecasting SEP Atmospheric and Space Radiation by Coupling UMASEP and NAIRAS Models

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts the radiation environment from the Earth's surface to free‐space. The model output provides dosimetric and particle flux quantities required to assess the hazardous radiation impacts to human health and adverse effects on vehicle electronic systems.
Christopher J. Mertens   +4 more
wiley   +1 more source

Régimen jurídico internacional de las armas nucleares: análisis de su legalidad desde el Derecho Internacional Humanitario.

open access: yes, 2020
Este trabajo ofrece un análisis del régimen jurídico internacional actual de las armas nucleares, centrándose en su compatibilidad con los principios del Derecho Internacional Humanitario. Son precisamente estas consideraciones humanitarias en las que se
Carro Andollo, Raquel
core   +2 more sources

Valorization of Purple Prickly Pear Peel By‐Products: Antiproliferative and Pro‐Apoptotic Effects on Human Colorectal Cancer Cells HCT116

open access: yesJournal of Food Biochemistry, Volume 2026, Issue 1, 2026.
Opuntia ficus-indica peel is known to possess antioxidant, anti‐inflammatory, and anticancer activities and currently is discarded or used for animal feeding. Within this context, the aim of this work was to evaluate the antiproliferative and pro‐apoptotic effect of purple prickly pear peel extract (PPE) on the human colon adenocarcinoma cancer cell ...
Yasmany Armas Diaz   +11 more
wiley   +1 more source

¿Qué tratados internacionales sirven para la regulación de armas nucleares?

open access: yes, 2021
Las Armas Nucleares ocasionan catástrofes, que a nivel internacional son verdaderamente preocupantes. Es por ello por lo que se han efectuado tratados y organizaciones que jurídicamente procrean, regulan y fortalecen la disminución de estas armas.
González Enríquez, Liliana Monserrat   +2 more
core  

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