Results 71 to 80 of about 1,031,036 (328)

Improved Estimation of O-B Bias and Standard Deviation by an RFI Restoration Method for AMSR-2 C-Band Observations over North America

Remote Sensing, 2022
Spaceborne microwave radiometer observations play vital roles in surface parameter retrievals and data assimilation, but widespread radio-frequency interference (RFI) signals in the C-band channel result in a lack of valuable data over large areas ...
Wangbin Shen, Zhaohui Lin, Zhengkun Qin, Xuesong Bai   +3 more
doaj   +1 more source

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

FEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze, Stéphane Canaan, Alexandre Gouzy, Pierre Santucci   +3 more
wiley   +1 more source

Effect of Radio Frequency Interference-Contaminated AMSR2 Signal Restoration on Soil Moisture Retrieval

Remote Sensing, 2022
Soil moisture is a key variable of the climate system. Microwave remote sensing has become an essential means of obtaining soil moisture because of the unique advantages of its all-day and all-weather observation capability.
Xuesong Bai, Zhengkun Qin, Zhaohui Lin, Wangbin Shen   +3 more
doaj   +1 more source

Physically-based data assimilation [PDF]

Geoscientific Model Development, 2010
Abstract. Ideally, a validation and assimilation scheme should maintain the physical principles embodied in the model and be able to evaluate and assimilate lower dimensional features (e.g., discontinuities) contained within a bulk simulation, even when these features are not directly observed or represented by model variables. We present such a scheme
Deborah Sulsky, Max D. Coon, Giang D. Nguyen, Giang D. Nguyen, Gad Levy   +4 more
openaire   +5 more sources

Influence of CO₂ observations on the optimized CO₂ flux in an ensemble Kalman filter [PDF]

Atmospheric Chemistry and Physics, 2014
In this study, the effect of CO2 observations on an analysis of surface CO2 flux was calculated using an influence matrix in the CarbonTracker, which is an inverse modeling system for estimating surface CO2 flux based on an ensemble Kalman filter.
J. Kim, H. M. Kim, C.-H. Cho
doaj   +1 more source

The implications of the American Board of Radiology's decision to relinquish its specialty board designation on prospective authorized medical physicists (AMPs) and radiation safety officers (RSOs)

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract In order to independently supervise the medical use of byproduct material, physicists in the United States (US) must legally meet the qualifications defined by the Nuclear Regulatory Commission (NRC) in the 35th part of the tenth title of the Code of Federal Regulations (§ 10 CFR Part 35). The American Board of Radiology (ABR) relinquished its
Christopher J. Tien, Samantha J. Simiele, Joann I. Prisciandaro, Jacqueline E. Zoberi, Y. Jessica Huang, William A. Hinchcliffe, Hania A. Al‐Hallaq   +6 more
wiley   +1 more source

Development and Evaluation of a New Method for AMSU-A Cloud Detection over Land

Remote Sensing, 2021
Satellite data are the main source of information for operational data assimilation systems, and Advanced Microwave Sounding Unit-A (AMSU-A) data are one of the types of satellite data that contribute most to the reduction of numerical forecast errors ...
Zhiwen Wu, Juan Li, Zhengkun Qin
doaj   +1 more source

On the Rigidity and Mechanical Behavior of Triply Periodic Minimal Surfaces‐Based Lattices: Insights from Extensive Experiments and Simulations

Advanced Engineering Materials, EarlyView.
This study examines the mechanical properties of triply periodic minimal surfaces (TPMS)‐based lattices, analyzing 36 architectures in elastic and plastic regimes. It evaluates the applicability of beam‐based scaling laws to TPMS lattices. Rigidity arises from the alignment of members with the load direction and solid regions preventing rotation.
Lucía Doyle, Humberto Terrones, Carlos González   +2 more
wiley   +1 more source

Cholesterol Functionalized Nanoparticles Are Effective against Helicobacter pylori, the Gastric Bug: A Proof‐of‐Concept Study

Advanced Healthcare Materials, EarlyView.
Helicobacter pylori gastric infection is widespread and recurrency is common, fuelled by bacterial resistance to antibiotics. Therefore, specific and noninducing resistance alternative treatments are an urgent need. Taking advantage of this gastric pathogen auxotrophy for cholesterol, a “trojan horse” strategy for H.
Ana Sofia Pinho, Renato Pereira, Mariana Pereira, Akhilesh Rai, Lino Ferreira, Maria Cristina Lopes Martins, Paula Parreira   +6 more
wiley   +1 more source

How Asian slum emissions impact local microclimates in polluted air masses

Atmospheric Science Letters, Volume 23, Issue 12, December 2022., 2022
Cook stove emissions over urban sprawl in South India and expected microphysical implications. Combustion‐mediated soot and black carbon from biomass burning in shantytowns modulate the local cloud cover. Abstract Urban sprawl comprising densely populated slums over South Asian cities yields copious amounts of soot and black carbon from archaic cooking
Satyajit Ghosh, C. R. Sathish Kumar, Siddharth Gumber, Steven Dobbie, Huiyi Yang   +4 more
wiley   +1 more source