Results 71 to 80 of about 2,350 (164)

Constraining the loop quantum gravity parameter space from phenomenology

Physics Letters B, 2018
Development of quantum gravity theories rarely takes inputs from experimental physics. In this letter, we take a small step towards correcting this by establishing a paradigm for incorporating putative quantum corrections, arising from canonical quantum ...
Suddhasattwa Brahma, Michele Ronco
doaj   +1 more source

Structural Elucidation and Engineering of the (S)‐scoulerine 2‐O‐Methyltransferase Enabling Regioselective Epiberberine Biosynthesis in Coptis chinensis

Plant Biotechnology Journal, EarlyView.
ABSTRACT Protoberberine alkaloids are a characteristic group of natural products in Coptis plants known for their notable pharmacological activities. However, the structural similarity and the substrate promiscuity of their biosynthetic enzymes have left the precise synthetic pathways remain unclarified, posing challenges to regulate product formation.
Jun Song, Di Liu, Shi Chen, Yufeng Tan, Siyu Wang, Shihan Li, Yutong Qin, Guofeng Li, Xufang Tian, Lan Yang, Chong Yuan, Junbo Gou, Wei Huang, Shilin Chen, Yifei Liu   +14 more
wiley   +1 more source

Quantization of Midisuperspace Models

Living Reviews in Relativity, 2010
We give a comprehensive review of the quantization of midisuperspace models. Though the main focus of the paper is on quantum aspects, we also provide an introduction to several classical points related to the definition of these models.
J. Fernando Barbero G., Eduardo J. S. Villaseñor   +1 more
doaj  

Tudor England and Stewart Scotland Through Spanish Eyes: A Complete Transcription and Translation of Pedro de Ayala's Letter of 1498 to King Ferdinand of Castile and Queen Isabella of Aragon

Renaissance Studies, EarlyView.
Abstract Pedro de Ayala served as a diplomat for King Ferdinand II of Aragon and Queen Isabella I of Castile at the courts of Henry VII, King of England, and James IV, King of Scots. In July 1498, he wrote a letter, partly in cipher, to report to his king and queen on such matters as Spain's interests in international diplomacy; the characters and ...
Adrian William Jaime, Valeria Tapia Cruz, Mairi Cowan   +2 more
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Alignment of the Starlings: Learning With Generative AI

Future Humanities, Volume 4, Issue 1, May 2026.
ABSTRACT I will argue that answers to normative questions concerning the place of generative AI in learning rest on answers to ontological questions regarding (1) precisely what is happening when a human ‘interacts’ with generative AI and (2) What is distinctive about organic learning as opposed to currently existing ‘machine learning’ (3) What is the ...
Sean Watson
wiley   +1 more source

Mitochondrial Ca2+ overload is a pivotal risk factor for lethal ventricular arrhythmias due to the oxidation of mitochondrial respirasome and energetic failure

British Journal of Pharmacology, Volume 183, Issue 7, Page 1404-1426, April 2026.
The data that support the findings of this study are available from the corresponding author upon reasonable request. Some data may not be made available because of privacy or ethical restrictions. Background and Purpose Ventricular arrhythmias are a leading cause of death among patients with cardiovascular diseases and are associated with elevated ...
Felipe de Jesús Salazar‐Ramírez, Luis Alberto Luévano‐Martínez, Abraham Méndez‐Fernández, Judith Bernal‐Ramírez, Carolina A. Morales‐Ochoa, Christian Silva‐Platas, Alfredo Cabrera‐Orefice, Ana C. Murrieta, José Luis Velasco‐Bolom, Gricelda Mendiola‐Garza, Flavio Contreras‐Torres, Guillermo Torre‐Amione, Ernesto A. Aiello, Gerardo García‐Rivas   +13 more
wiley   +1 more source

Loop Quantum Gravity Vacuum with Nondegenerate Geometry

Symmetry, Integrability and Geometry: Methods and Applications, 2012
In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry.
Hanno Sahlmann, Tim Koslowski
doaj   +1 more source

Quantifying upright positioning accuracy with optical surface tracking in radiotherapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 3, March 2026.
Abstract Purpose This study quantified inter‐ and intra‐fractional setup accuracies in the upright posture and compared them among setups with different immobilization methods. Methods Two and four setups were examined for abdominal and head and neck (HN) cancer treatments, respectively.
Yusuke Nomura, Sodai Tanaka, Hideyuki Takei, Kinji Maeda, Takuro Takekoshi, Hideki Iwakami, Hirotoshi Takiyama, Minoru Tajiri, Shunsuke Yonai, Hideyuki Mizuno, Yoshiyuki Iwata, Taku Inaniwa, Hitoshi Ishikawa   +12 more
wiley   +1 more source

Burn‐Safe Biodegradable Magnetocaloric Composites for Temperature‐Controlled Biomedical Applications

Advanced Science, Volume 13, Issue 15, 13 March 2026.
This work investigates a magnetocaloric (Mn,Fe)2(P,Si) compound tailored for precise, self‐regulating heating in biomedical use. With a Curie temperature tuned at 43 °C, it enables therapeutic activation without overheating. Encapsulation in a composite ensures controlled temperature rise under an alternating magnetic field (AMF), with high ...
Pornpawee Uliss, Vasiliki Gkouzioti, Wuliji Hanggai, Friso Kahler, Elena Aprea, Qi Jia, Jean‐Philippe Frimat, Ekkes Brück, Clementine M. Boutry   +8 more
wiley   +1 more source