Results 21 to 30 of about 5,248 (152)

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt, Adriana Arigò, Giorgio Famiglini, Pierangela Palma, Achille Cappiello   +4 more
wiley   +1 more source

Active Electromagnetic Interference Suppression for MRI and Proton Resonance Frequency Shift Thermometry During MRI‐Guided Microwave Ablation

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a software‐based active electromagnetic interference (EMI) suppression (AES) framework on whole‐body multi‐channel MRI systems for reliable MRI and MR thermometry during MRI‐guided microwave ablation (MWA). Methods In addition to primary imaging coils, an unloaded standard body array coil was positioned outside the imaging ...
Qing Dai, Jason Chiang, Shu‐Fu Shih, Wenqi Zhou, David S. K. Lu, Holden H. Wu   +5 more
wiley   +1 more source

Improving forest age estimation to understand subtropical forest regrowth dynamics using deep learning image segmentation of time‐series historical aerial photographs

Remote Sensing in Ecology and Conservation, EarlyView.
Accurately estimating forest age is key to understanding how forests recover and evaluating restoration success. We developed a two‐step deep learning approach using historical greyscale aerial photographs to map forest age at fine spatial scales. By combining a pre‐trained model with localized fine‐tuning, our U‐Net + ResNet50 architecture achieved ...
Ying Ki Law, Yi‐Fei Gu, Shuwen Liu, Guangqin Song, Aland H. Y. Chan, Cham Man Tse, Zhonghua Liu, Martha J. Ledger, Billy C. H. Hau, Sawaid Abbas, Jin Wu   +10 more
wiley   +1 more source

The cosemanticness of Kaiser hulls of fixed classes of models

Қарағанды университетінің хабаршысы. Математика сериясы
In this article, within the framework of the study of Jonsson theories, the model-theoretic properties of cosemanticness classes belonging to the factor set of the Jonsson spectrum of an existentially closed models’ subclass of some Jonsson theory in a ...
A.R. Yeshkeyev, I.O. Tungushbayeva, A.K. Koshekova   +2 more
doaj   +1 more source

Artificial Intelligence Patents and the Sustainable Development Goals: A Comparative Analysis of the United States and China

Sustainable Development, EarlyView.
ABSTRACT Artificial intelligence (AI) is a general‐purpose technology with wide‐ranging implications for sustainable development; yet, little is known about how its innovation trajectories have aligned with the United Nations (UN) Sustainable Development Goals (SDGs).
Ern Chern Khor, Moon Choi
wiley   +1 more source

Temporal, species‐specific variation in activity patterns of bats (Chiroptera) along a boreal river basin in Västerbotten, Sweden

Wildlife Biology, EarlyView.
Seasonal variation in photoperiods, energetic demands, and reproductive constraints are expected to strongly influence bat activity at high latitudes, yet empirical evidence from boreal systems is limited. We used passive acoustic monitoring to examine spatial, temporal, and feeding activity patterns of bats along a boreal river basin in Sweden (64°N ...
Morgan Hughes, Monika Laux
wiley   +1 more source

Mutation screening of melatonin-related genes in patients with autism spectrum disorders

, 2010
Background One consistent finding in autism spectrum disorders (ASD) is a decreased level of the pineal gland hormone melatonin and it has recently been demonstrated that this decrease to a large extent is due to low activity of the acetylserotonin O ...
Ljunggren, E, Elin Ljunggren, Mikael Landén, Pedersen, C, Giacobini MaiBritt, Jonsson, L, Anna Bremer, Landen, M, Christin Pedersen, Jonsson, Lina, Giacobini, M,, Melke, J, Jonas Melke, Thuresson, K, Jonsson Lina, MaiBritt Giacobini, Pedersen Christin, Bremer Anna, Landén Mikael, Kent Thuresson, Thuresson Kent, Melke Jonas, Bremer, A,, Ljunggren Elin, Lina Jonsson   +24 more
core   +1 more source

Contrasting properties of predation and scavenging networks governed by megaherbivores in an African savannah

Journal of Animal Ecology, EarlyView.
For the first time, predation and scavenging networks are directly compared within a single ecosystem. Using an 8‐year dataset of African mammals, including megaherbivores, this study reveals distinct structural rules and body mass constraints, providing a scalable framework for studying consumer–resource dynamics and ecosystem function.
Solange Alexandra Batista‐Nunes, Esther Sebastián‐González, Femke Broekhuis, Frank van Langevelde, Niels Mogensen, Marcos Moleón   +5 more
wiley   +1 more source

Impact of episiotomy on anal incontinence following second‐ to fourth‐degree perineal tears—A cohort study

Acta Obstetricia et Gynecologica Scandinavica, EarlyView.
In over 12 000 Swedish primiparous women, anal incontinence was more common after severe perineal tears. Episiotomy did not raise the overall risk except for a slight increase in gas incontinence after second‐degree tears. Encouragingly, symptoms improved across all types of tears during the first‐year postpartum.
Mette L. Josefsson, Eva Uustal, Sara Sohlberg, Cecilia Ekéus, Erik Lampa, Maria Jonsson   +5 more
wiley   +1 more source

The spectrum of asymptotic Cayley trees

We characterize the spectrum of the transition matrix for simple random walk on graphs consisting of a finite graph with a finite number of infinite Cayley trees attached.
Jonsson, Thordur, Wheater, John, Durhuus, Bergfinnur   +2 more
core   +3 more sources