Results 61 to 70 of about 388 (206)

The X‐Ray Crystal Structure of BorF, the Flavin Reductase Subunit of a Two‐Component Flavin‐Dependent Tryptophan Halogenase

Proteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT BorF is a short‐chain flavin reductase from a desert soil bacterium that uses NADH to reduce FAD to FADH2, which is used by the tryptophan‐6‐halogenase BorH to chlorinate tryptophan in the biosynthetic pathway of borregomycin A. The X‐ray crystal structure of BorF bound to FAD was solved to 2.37 Å by molecular replacement.
Zheng Ma, Emily W. Rady, Aravinda J. de Silva, John J. Bellizzi III   +3 more
wiley   +1 more source

The Impact of Quadratic Nonlinear Relations between Soil Moisture Products on Uncertainty Estimates from Triple Collocation Analysis and Two Quadratic Extensions

Journal of Hydrometeorology, 2016
Abstract The error characterization of soil moisture products, for example, obtained from microwave remote sensing data, is a key requirement for using these products in applications like numerical weather prediction. The error variance and root-mean-square error are among the most popular metrics: they can be estimated consistently for ...
Simon Zwieback, Chun-Hsu Su, Alexander Gruber, Wouter A. Dorigo, Wolfgang Wagner   +4 more
openaire   +1 more source

Engineered Gravel Trench Hyporheic Exchange to Create Cold‐Water Thermal Refuges

River Research and Applications, EarlyView.
ABSTRACT Warming rivers are driving a loss or fragmentation of cold‐water habitat and providing the impetus to develop proactive thermal management approaches to maintain suitable habitat in rivers. One innovative approach is through the creation of cold‐water thermal refuges during periods of thermal stress for aquatic species.
Kathryn A. Smith, Edmund A. Halfyard, Christa Kelleher, Barret L. Kurylyk   +3 more
wiley   +1 more source

Collocation-analyzed multi-source ensembled wind speed data in lake district: a case study in Dongting Lake of China

Frontiers in Environmental Science
The lack of reliable near-surface wind data products in lake district regions significantly limits the efficiency of meteorological models, forecasts, services, and wind resource development.
Shi-Qi Tan, Shi-Qi Tan, Hai-Feng Guo, Hai-Feng Guo, Chun-Hua Liao, Chun-Hua Liao, Jing-Hao Ma, Jing-Hao Ma, Wen-Zhi Tan, Wei-Ying Peng, Wei-Ying Peng, Jia-Zhi Fan, Jia-Zhi Fan, Jia-Zhi Fan   +13 more
doaj   +1 more source

Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin, Laurent Castanet, Laurent Féral, Xavier Boulanger   +3 more
wiley   +1 more source

Performance Evaluation and Spatiotemporal Dynamics of Nine Reanalysis and Remote Sensing Evapotranspiration Products in China

Remote Sensing
Evapotranspiration (ET) is a critical component of the hydrological cycle. The eddy covariance data at 40 flux stations in different climatic regions in China were used to evaluate the accuracy of five reanalysis actual ET datasets (ERA5, ERA5-LAND ...
Yujie Liu, Wen Wang, Tianqing Zhao, Zhiyuan Huo   +3 more
doaj   +1 more source

Aspirations and Apprehensions: Reconciling Youths' Desires and Concerns for a Sustainable Future

Sustainable Development, EarlyView.
ABSTRACT Although youth are widely acknowledged as change agents, their full participation is often limited by immediate concerns. This study examines how young people's aspirations shape their engagement with sustainability amid economic, environmental, and social uncertainties. Drawing on a large‐scale international survey (n: 15,076) and multinomial
Stephen Thomas Homer, Weng Marc Lim, Marc Arul Weissmann   +2 more
wiley   +1 more source

What Program for Love in the 21st Century? Thinking With and Beyond Luhmann

Systems Research and Behavioral Science, EarlyView.
ABSTRACT From a sociological perspective, the paper examines how normative frameworks for intimate relationships have changed since the publication of Luhmann's Love as Passion (1982). Building on Luhmann's notion of a program for love, we discuss his claim that late 20th century love semantics were organized around a program of understanding. We argue
Chiara Piazzesi, Martin Blais
wiley   +1 more source

Uncertainty in Sea State Observations from Satellite Altimeters and Buoys during the Jason-3/Sentinel-6 MF Tandem Experiment

Remote Sensing
The Copernicus Sentinel-6 Michael Freilich (S6-MF) and Jason-3 (J3) Tandem Experiment (S6-JTEX) provided over 12 months of closely collocated altimeter sea state measurements, acquired in “low-resolution” (LR) and synthetic aperture radar “high ...
Ben W. Timmermans, Christine P. Gommenginger, Craig J. Donlon   +2 more
doaj   +1 more source

Systematic Learning and Pedagogy Through a Modular, Progressive‐Based Simulation Modeling Framework for Complex Systems

Systems Engineering, EarlyView.
ABSTRACT Smart Transportation Systems (SmTS) will exceed complex systems with their classification as complex, sociotechnical, and AI‐based systems. Possessing a toolkit that helps systemically understand, analyze, and assess these systems will be advantageous in the early stages of the systems engineering (SE) lifecycle, and Agent Based Models (ABMs ...
Ifezue V. Obiako, Sean B. Walker, Kari J. Lippert, Robert J. Cloutier   +3 more
wiley   +1 more source