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Assessing global Sentinel-2 coverage dynamics and data availability for operational Earth observation(EO)applications using the EO-Compass

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International Journal of Digital Earth 2020年第7期13卷 768-784页

作者： Martin Sudmanns Dirk Tiede hannah Augustin Stefan Lang Department of Geoinformatics University of SalzburgSalzburgAustria

Sentinel-2 scenes are increasingly being used in operational Earth observation(EO)applications at regional,continental and global scales,in near-real time applications,and with multi-temporal *** a broader scale,they are therefore one of the most important facilitators of the Digital ***,the data quality and availability are not spatially and temporally homogeneous due to effects related to cloudiness,the position on the Earth or the acquisition *** spatiotemporal inhomogeneity of the underlying data may therefore affect any big remote sensing analysis and is important to *** study presents an assessment of the metadata for all accessible Sentinel-2 Level-1C scenes acquired in 2017,enabling the spatio-temporal coverage and availability to be quantified,including scene availability and *** exploratory analysis of the global,multi-temporal metadata also reveals that higher acquisition frequencies do not necessarily yield more cloud-free scenes and exposes metadata quality issues,*** incorrect cloud cover estimation in high,nonvegetated *** continuously updated datasets and analysis results are accessible as a Web application called *** contributes to a better understanding and selection of Sentinel-2 scenes,and improves the planning and interpretation of remote sensing analyses.

关键词： Sentinel-2 metadata cloud cover scene coverage global analysis big Earth data digital earth

Direct Measurement of CO_2 Retention in Arable Soils with pH Above 6.5 During Barometric Process Separation Incubation

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Pedosphere 2018年第5期28卷 726-738页

作者： hannah CONRADS Joachim INGWERSEN JU Xiaotang Thilo STRECK Institute of Soil Science and Land Evaluation Biogeophysics SectionUniversity of Hohenheim College of Agricultural Resources and Environmental Sciences China Agricultural University

The barometric process separation(BaPS)technique is a well-established incubation method to simultaneously measure gross nitrification and respiration rates in *** application,however,is still critical in soils with pH above ***,a substantial part of microbial CO_2 production is retained in soil solution(CO_2,aq)due to shifts in the carbonate *** may lead to substantial errors in gas balance ***,utilization of the BaPS technique is only reliable if the critical term is adequately *** present an easy,inexpensive,and direct method,the sterilization-CO_2-injection(SCI)method,to measure CO_2 retention during soil *** soil was incubated in the BaPS system,and defined volumes of CO_2 were injected to stepwise increase CO_2partial pressure(p CO_2)inside the chamber and to analyse the physicochemical equilibration *** exemplary agricultural soils from Northeast China and Southwest Germany were used for method establishment,presenting pH values between 4.4 and 7.6 and carbonate contents between 0% and 3.9%.We observed that in soils with pH>6.5,70%–90% of the injected CO_2 was taken up by the soil until the equilibrium inside the chamber was *** expected,in soils with low pH(<6.5),measured CO_2 retention was ***_2 retention patterns were sensitive to incubation temperature with tri-fold dissolution capacity at 5~?C compared to 25?C,but insensitive to variations in soil water *** resulting soil-specific relationship between p CO_2 and CO_2,aq concentration allowed the quantification of CO_2,aq concentration as a function of headspace p CO_2.

关键词： carbonate equilibrium CO2 dissolution capacity CO_2 partial pressure microbial CO2 production soil pH sterilization-CO2-injection method volume of headspace air volume of soil solution

Engineering porous organic polymers for carbon dioxide capture

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Science China Chemistry 2017年第8期60卷 1007-1014页

作者： Ning Huang Gregory Day Xinyu Yang hannah Drake Hong-Cai Zhou Department of Chemistry Texas A＆M University College Station TX 77843 US

As atmospheric CO_2 levels rise, the development of physical or chemical adsorbents for CO_2 capture and separation is of great importance on the way towards a sustainable low-carbon future. Porous organic polymers are promising candidates for CO_2 capture materials owing to their structural flexibility, high surface area, and high stability. In this review, we highlight high-performance porous organic polymers for CO_2 capture and summarize the strategies to enhance CO_2 uptake and selectivity, such as increasing surface area, increasing interaction between porous organic polymers and CO_2, and pore surface functionalization.

关键词： porous organic polymers C02 capture nanomaterials post-synthesis polymer

Regulation of enolase activation to promote neural protection and regeneration in spinal cord injury

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Neural Regeneration Research 2023年第7期18卷 1457-1462页

作者： hannah MMcCoy Rachel Polcyn Naren LBanik Azizul Haque Department of Microbiology and Immunology Medical University of South CarolinaCharlestonSCUSA Department of Neurosurgery Medical University of South CarolinaCharlestonSCUSA Ralph H.Johnson Veterans Administration Medical Center CharlestonSCUSA

Spinal cord injury(SCI)is a debilitating condition characterized by damage to the spinal cord resulting in loss of function,mobility,and sensation with no *** and Drug Administration-approved ***,a multifunctional glycolytic enzyme upregulated after SCI,promotes pro-and anti-inflammatory events and regulates functional recovery in *** is normally expressed in the cytosol,but the expression is upregulated at the cell surface following cellular injury,promoting glial cell activation and signal transduction pathway ***-induced microglia activation triggers pro-inflammatory mediators at the injury site,activating other immune cells and metabolic events,i.e.,Rho-associated kinase,contributing to the neuroinflammation found in *** surface expression also activates cathepsin X,resulting in cleavage of the C-terminal end of neuron-specific enolase(NSE)and non-neuronal enolase(NNE).Fully functional enolase is necessary as NSE/NNE C-terminal proteins activate many neurotrophic processes,i.e.,the plasminogen activation system,phosphatidylinositol-4,5-bisphosphate 3-kinase/protein kinase B,and mitogen-activated protein kinase/extracellular signal-regulated *** here suggest an enolase inhibitor,ENOblock,attenuates the activation of Rho-associated kinase,which may decrease glial cell activation and promote functional recovery following ***,ENOblock inhibits cathepsin X,which may help prevent the cleavage of the neurotrophic C-terminal protein allowing full plasminogen activation and phosphatidylinositol-4,5-bisphosphate 3-kinase/mitogen-activated protein kinase *** combined NSE/cathepsin X inhibition may serve as a potential therapeutic strategy for preventing neuroinflammation/degeneration and promoting neural cell regeneration and recovery following *** role of cell membrane-expressed enolase and associated metabolic events should be investigated to determine if the same strategies can be applied to other neu

关键词： cathepsin X ENOblock enolase glia mitogen-activated protein kinase/extracellular signal-regulated kinase neurodegeneration neuroinflammation phosphatidylinositol-4,5-bisphosphate 3-kinase/protein kinase B Rho-associated protein kinase spinal cord injury

Hyperresolution information and hyperresolution ignorance in modelling the hydrology of the land surface

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Science China Earth Sciences 2015年第1期58卷 25-35页

作者： Keith BEVEN hannah CLOKE Florian PAPPENBERGER Rob LAMB Neil HUNTER Lancaster Environment Centre Lancaster UniversityLancaster LA1 4YQUK and Department of Earth SciencesUppsala UniversityUppsalaSweden Department of Geography and Environmental Science Department of MeteorologyUniversity of ReadingReadingUK European Centre for Medium-range Weather Forecasts ReadingUK School of Geographical Sciences University of BristolBristolUK College of Hydrology and Water Resources Hehai University JBA Trust South BarnBroughton HallSkipton BD23 3AEUK JBA Consulting South BarnBroughton HallSkipton BD23 3AEUK

There is a strong drive towards hyperresolution earth system models in order to resolve finer scales of motion in the *** problem of obtaining more realistic representation of terrestrial fluxes of heat and water,however,is not just a problem of moving to hyperresolution grid *** is much more a question of a lack of knowledge about the parameterisation of processes at whatever grid scale is being used for a wider modelling *** grid scales cannot alone solve the problem of this hyperresolution *** paper discusses these issues in more detail with specific reference to land surface parameterisations and flood inundation *** importance of making local hyperresolution model predictions available for evaluation by local stakeholders is *** is expected that this will be a major driving force for improving model performance in the future.

关键词： hyperresolution models epistemic uncertainties models of everywhere communicating uncertainty flood risk

Update on the management of the gastrointestinal effects of radiation

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World Journal of Gastrointestinal Oncology 2021年第5期13卷 400-408页

作者： hannah McCaughan Stephen Boyle John J McGoran Department of Gastroenterology Altnagelvin Area HospitalLondonderry BT476SBUnited Kingdom

Radiation therapy is a long-established and essential modality in the treatment of many *** is well known that tissue within a field of radiation can suffer indiscriminate effects,leading to acute and chronic *** gastrointestinal tract may be adversely affected by *** the mouth to the rectum,patients can experience troublesome symptoms that require the concerted input of specialist *** range from nursing care,dietetic optimization,pharmacological management,and mechanical procedures through endoscopy and *** evidence exists mainly for radiation induced effects in four distinct areas of the gastrointestinal tract:oral mucosa,esophagus,small bowel,and *** review explores the experiences of oncology and gastrointestinal teams in managing the most common conditions and some of the different practices for radiation associated morbidity.

关键词： Radiation Stricture Endoscopy

Machine Learning and Medical Devices:The Next Step for Tissue Engineering

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Engineering 2021年第12期7卷 1704-1706页

作者： hannah A.Pearce Antonios G.Mikos Department of Bioengineering Rice UniversityHoustonTX 77030USA

The pathway for creating and seeing a medical device to market is time-intensive,costly,and demanding[1,2].This is particularly true of devices developed with tissue engineering components within the device[1,3].Machine learning and artificial intelligence have expedited optimization and engineering design in many other engineering disciplines[4,5].

关键词： demanding artificial creating

Recent advances in room temperature phosphorescence of crystalline boron containing organic compounds

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Aggregate 2022年第4期3卷 15-22页

作者： hannah E.Hackney Dmitrii F.Perepichka Department of Chemistry McGill UniversityMontrealQCCanada

In organic compounds,room temperature phosphorescence(RTP)is a rare,yet highly desirable,property that is important for a wide variety of applications,including tissue imaging,anticounterfeiting technologies,photodynamic therapy,and organic light-emitting *** most organic RTP molecules rely on heavy atoms or carbonyl functional groups to accelerate singlet-to-triplet intersystem crossing,in the past few years there have been several reports of RTP induced by boroncontaining functional *** minireview covers the recent literature on RTP of crystalline boroorganic compounds and analyzes the connections between molecular structure,intermolecular interactions,and the resulting phosphorescence.

关键词： luminescence organic crystals organoboron chemistry room temperature phosphorescence

Mitochondria as a target for neuroprotection: role of methylene blue and photobiomodulation

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Translational Neurodegeneration 2020年第2期9卷 248-269页

作者： Luodan Yang hannah Youngblood Chongyun Wu Quanguang Zhang Department of Neuroscience and Regenerative Medicine Medical College of GeorgiaAugusta University112015th StreetAugustaGA30912USA Department of Cellular Biology and Anatomy Medical College of GeorgiaAugusta University112015th StreetAugustaGA30912USA

Mitochondrial dysfunction plays a central role in the formation of neuroinflammation and oxidative stress,which are important factors contributing to the development of brain *** evidence suggests mitochondria are a promising target for ***,methods targeting mitochondria have been considered as potential approaches for treatment of brain disease through the inhibition of inflammation and oxidative *** review will discuss two widely studied approaches for the improvement of brain mitochondrial respiration,methylene blue(MB)and photobiomodulation(PBM).MB is a widely studied drug with potential beneficial effects in animal models of brain disease,as well as limited human ***,PBM is a non-invasive treatment that promotes energy production and reduces both oxidative stress and inflammation,and has garnered increasing attention in recent *** and PBM have similar beneficial effects on mitochondrial function,oxidative damage,inflammation,and subsequent behavioral ***,the mechanisms underlying the energy enhancing,antioxidant,and anti-inflammatory effects of MB and PBM *** review will focus on mitochondrial dysfunction in several different brain diseases and the pathological improvements following MB and PBM treatment.

关键词： Mitochondrial dysfunction Neuroprotection Methylene blue Photobiomodulation