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Mapping wetlands in Indonesia using Landsat and PALSAR data-sets and derived topographical indices

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Geo-Spatial Information Science 2014年第1期17卷 60-71页

作者： Belinda A.MARGONO Jean-Robert B.BWANGOY Peter V.POTAPOV Matthew c.hansen Department of Geographical Sciences University of Maryland4321 Hartwick Bld.College ParkMD 20742USA GIS center of Excellence South Dakota State University1021 Medary Ave.Wecota HallBrookingsSD 57007USA The Ministry of Forestry(MoF)of Indonesia Manggala Wanabhkati Bld.Jakarta 10270Indonesia

Wetlands play an important role in the provision of ecosystem services,ranging from the regulation of hydrological systems to carbon sequestration and biodiversity *** paper reports the mapping of Indonesia’s wetland cover as a single thematic class,including peatlands,freshwater wetlands,and ***-interpreted training data were used to identify wetland formations including areas of likely past wetland extent that have been converted to other land *** indices(Shuttle Radar Topography Mission-derived)and optical(Landsat)and radar(PALSAR)image inputs were used to build a bagged classification tree model based on training data in order to generate a national-scale map of wetland extent at a 60 m spatial *** resulting wetland map covers 21.0%(39.6 Mha)of Indonesia’s land,including 25.2% of Sumatra(11.9 Mha),22.9% of Kalimantan(12.2 Mha),and 28.9% of Papua(11.8 Mha).Results agree with existing image-interpreted products from Indonesia’s Ministries of Forestry and Agriculture and Wetlands International(89% overall agreement),and with the Ministry of Forestry forest inventory data for Sumatra and Kalimantan(91% overall agreement).An internally consistent algorithm-derived national wetland extent map can be used to quantify changing rates of land conversion inside and outside of ***,wetlands extent can be used to efficiently allocate field resources in national assessments of wetland sub-types such as peatlands,which are a current focus of policies aiming to reduce carbon emissions from land use change.

关键词： wetlands Indonesia remote sensing Landsat digital elevation model(DEM) PALSAR Shuttle Radar Topography Mission(SRTM)

Matrix from urine stem cells boosts tissue-specific stem cell mediated functional cartilage reconstruction

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Bioactive Materials 2023年第5期23卷 353-367页

作者： Ming Pei Yixuan Amy Pei Sheng Zhou Elmira Mikaeiliagah christopher Erickson Benjamin Giertych Halima Akhter Lei Wang Amanda Stewart Joshua Parenti Bin Wang Sijin Wen Sotcheadt Sim Eric Quenneville Kirk c.hansen Steven Frisch Gangqing Hu Stem cell and Tissue Engineering Laboratory Department of OrthopaedicsWest Virginia UniversityMorgantownWVUSA WVU cancer Institute Robert C.Byrd Health Sciences CenterWest Virginia UniversityMorgantownWVUSA Perelman School of Medicine University of PennsylvaniaPhiladelphiaPAUSA Department of Biology Ardabil BranchIslamic Azad UniversityArdabilIran Department of Biochemistry&Molecular Genetics University of Colorado DenverAuroraCOUSA Department of Microbiology Immunologyand Cell BiologyWest Virginia UniversityMorgantownWVUSA Department of Foot and Hand Surgery Clinical Medical College of Yangzhou UniversitySubei People’s Hospital of Jiangsu ProvinceYangzhouJiangsuChina Department of Biostatistics School of Public HealthWest Virginia UniversityMorgantownWVUSA Biomomentum Inc. LavalQuebecCanada Department of Biochemistry West Virginia UniversityMorgantownWVUSA Bioinformatics core West Virginia UniversityMorgantownWVUSA

Articular cartilage has a limited capacity to self-heal once ***-specific stem cells are a solution for cartilage regeneration;however,ex vivo expansion resulting in cell senescence remains a challenge as a large quantity of high-quality tissue-specific stem cells are needed for cartilage *** previous report demonstrated that decellularized extracellular matrix(dEcM)deposited by human synovium-derived stem cells(SDScs),adipose-derived stem cells(ADScs),urine-derived stem cells(UDScs),or dermal fibroblasts(DFs)provided an ex vivo solution to rejuvenate human SDScs in proliferation and chondrogenic potential,particularly for dEcM deposited by *** make the cell-derived dEcM(c-dEcM)approach applicable clinically,in this study,we evaluated ex vivo rejuvenation of rabbit infrapatellar fat pad-derived stem cells(IPFScs),an easily accessible alternative for SDScs,by the abovementioned c-dEcMs,in vivo application for functional cartilage repair in a rabbit osteochondral defect model,and potential cellular and molecular mechanisms underlying this *** found that c-dEcM rejuvenation promoted rabbit IPFScs’cartilage engineering and functional regeneration in both ex vivo and in vivo models,particularly for the dEcM deposited by UDScs,which was further confirmed by proteomics ***-Seq analysis indicated that both mesenchymal-epithelial transition(MET)and inflammation-mediated macrophage activation and polarization are potentially involved in the c-dEcM-mediated promotion of IPFScs’chondrogenic capacity,which needs further investigation.

关键词： Decellularized extracellular matrix Tissue-specific stem cell Urine-derived stem cell Rejuvenation Functional cartilage repair

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相控阵天线和自适应天线的最近进展

系统工程与电子技术 1980年第1期 29-41页

作者： Robert c.hansen ,尚达 ,王勤

引言阵列天线正在两个并行但互有联系的方面发展着,这两方面是电扫(相控)阵列天线和自适应(归零)阵列天线。本文评述了最近几年这两方面的重要进展并略为论述一些发展的前景。象这样的一篇评述不可能详尽和深入,但因所引用的参考文献... 详细信息

引言阵列天线正在两个并行但互有联系的方面发展着,这两方面是电扫(相控)阵列天线和自适应(归零)阵列天线。本文评述了最近几年这两方面的重要进展并略为论述一些发展的前景。象这样的一篇评述不可能详尽和深入,但因所引用的参考文献是在可采用的文献中最有价值的,如作详细研究,这

关键词：单元的扫描角矩阵数学分析自适应阵列天线反馈回路联立方程方程组裂缝天线隙缝天线反射系数接地板偶极子多极栅瓣相控阵天线

computational investigation of the effect of biodiesel fuel properties on diesel engine NOx emissions

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International Journal of Agricultural and Biological Engineering 2009年第2期2卷 41-48页

作者： Wenqiao Yuan A.c.hansen Department of Biological and Agricultural Engineering Kansas State UniversityManhattanKS 66506USA Department of Agricultural and Biological Engineering University of IllinoisChampaignIL 61801USA

A detailed numerical spray atomization,ignition,combustion and nitrogen oxides(NOx)formation model was developed for direct injection diesel engines by using KIVA3V *** modified or recalibrated sub-models including a Kelvin-Helmholtz Rayleigh-Taylor(KH-RT)spray breakup model,a Shell ignition model,a single-step kinetic combustion model and a Zel’dovich NOx formation model were incorporated into *** modified model was validated by experimental data obtained from a John Deere 4045T direct injection diesel engine that was fueled with a natural soybean methyl ester,a yellow grease methyl ester,a genetically modified soybean methyl ester and No.2 diesel *** between predictions of the brake-specific NOx and measured values were less than 1%at full *** biodiesel fuels,either the Zel’dovich mechanism overpredicted NOx emissions,the ratio of NO to NOx should be less than diesel fuel,or *** observed from the modeling results,the higher latent heat of vaporization and higher surface tension of biodiesel relative to diesel fuel did not result in increased NOx *** higher viscosity of biodiesel could be one of the reasons for increased NOx,but its effect was relatively small compared with the effect of decreased spray cone angle and advanced start of injection timing on *** spray cone angle and advanced start of injection were the main reasons for increased NOx emissions of biodiesel.

关键词： biodiesel diesel engine modeling NOx emissions

Global characterization and monitoring of forest cover using Landsat data: opportunities and challenges

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International Journal of Digital Earth 2012年第5期5卷 373-397页

作者： John R.Townshend Jeffrey G.Masek chengquan Huang Eric.F.Vermote Feng Gao Saurabh channan Joseph O.Sexton Min Feng Raghuram Narasimhan Dohyung Kim Kuan Song Danxia Song Xiao-Peng Song Praveen Noojipady Bin Tan Matthew c.hansen Mengxue Li Robert E.Wolfe Global Land cover Facility Department of Geographical SciencesUniversity of MarylandCollege ParkMDUSA Goddard Space Flight center National Aeronautics and Space AdministrationGreenbeltMDUSA Department of Geographical Sciences University of MarylandCollege ParkMDUSA USDA-ARS Hydrology and Remote Sensing Laboratory BeltsvilleMDUSA

The compilation of global Landsat data-sets and the ever-lowering costs of computing now make it feasible to monitor the Earth’s land cover at Landsat resolutions of 30 *** this article,we describe the methods to create global products of forest cover and cover change at Landsat ***,there are many challenges in ensuring the creation of high-quality *** we propose various ways in which the challenges can be *** the challenges are the need for atmospheric correction,incorrect calibration coefficients in some of the data-sets,the different phenologies between compila-tions,the need for terrain correction,the lack of consistent reference data for training and accuracy assessment,and the need for highly automated character-ization and change *** propose and evaluate the creation and use of surface reflectance products,improved selection of scenes to reduce phenological differences,terrain illumination correction,automated training selection,and the use of information extraction procedures robust to errors in training data along with several other *** several stages we use Moderate Resolution Spectro-radiometer data and products to assist our analysis.A global working prototype product of forest cover and forest cover change is included.

关键词： Landsat land cover forest cover change global mapping global monitoring

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应用理想蛋白质技术配合日粮的实用方法

国外畜牧学（猪与禽） 1993年第5期13卷 20-23页

作者：王耀光 Blaine c.hansen 美国中央大豆公司

近年来,“理想蛋白质”已从一种概念发展成了一项实用技术,因此现在已经有可能更精确地配合日粮。本文是作者为美国“卡罗来那猪营养会议”准备的文章,可作为理想蛋白质日粮配合的入门。

关键词：饲料蛋白配方

Endotoxin receptor cD14 gene variants and histological features in chronic HcV infection

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World Journal of Gastroenterology 2009年第31期15卷 3884-3890页

作者： Eva Askar Giuliano Ramadori sabine Mihm Department of Gastroenterology and Endocrinology University Medical CenterGeorg-August-University

AIM:To analyze the correlation between cD14 rs2569190/c-159T single nucleotide polymorphism (SNP) and disease progression in chronic hepatitis ***: Liver biopsy specimens from a total of 137 and 349 patients with chronic hepatitis c were separately evaluated with respect to necroinflammatory activity (grading) and architectural changes (staging). In one group, further histological lesions characteristic for hepatitis c, hepatitis c virus subtypes, and biochemical parameters of liver disease were also investigated. Samples of genomic DNA were genotyped for the respective SNP by 5'-nuclease assays using fluorescent dye-labeled allele-specif ic ***: Genotype distribution did not deviate from the Hardy-Weinberg equilibrium. In the first group, patients homozygous for the variant allele T were found to be younger than c allele carriers (39.6±12.5 vs 45.7±11.5, P=0.008). Among the histological lesions studied, portal lymphoid aggregates were more frequently observed among TT homozygotes than among c carriers (21/37 vs 32/100, P=0.008). The presence of portal lymphoid aggregates was closely correlated with hepatic inflammation (P=0.003) and with bile duct damage (Pcontrast, was not found to be related to the cD14 gene c-159T ***: The data suggest a possible relationship between cD14 c-159T polymorphism and the formation of portal lymphoid aggregates, but not liver fibrosis progression in chronic hepatitis c.

关键词： cD14 Endotoxins Hepatitis c virus Inflammation Lipopolysaccharides Liver fibrosis Portal system Single nucleotide polymorphism

An unhappy triad:Hemochromatosis, porphyria cutanea tarda and hepatocellular carcinoma-A case report

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World Journal of Gastroenterology 2007年第13期13卷 1998-2001页

作者： Martina T Mogl Andreas Pascher sabine J Presser Michael Schwabe Peter Neuhaus Natascha c Nuessler Department of Surgery Charité Campus Virchow-Klinikum Augustenburger Platz 1 Berlin 13353 Germany

Liver fibrosis and cirrhosis are predisposing factors for the development of hepatocellular carcinoma （Hcc）. Hemosiderosis has also been described to trigger carcinogenesis. A significant iron overload, as found in hereditary hemochromatosis （HHc）, is a risk factor for Hcc and may also promote the symptoms of porphyria cutanea tarda （PcT）. A 68-year old male patient presented to our clinic with a suspected Hcc, elevated alpha-fetoprotein but normal liver function tests. He reported a 25 year-old history of vitiligo upon exposure to sunlight. The patient underwent an extended left hemihepatectomy, and the recovery was uneventful, with the exception of a persistent hyperbilirubinemia. Perfusion problems and extrahepatic cholestasis were ruled out by cT-scan with angiography and MR-cholangiopancreatography. However, MR1 showed an iron overload. Histology confirmed the Hcc （pT3, pN0, G3, R0） and revealed a portal fibrosis and hemosiderosis. Based on the skin lesions we suspected a PcT that was confirmed by laboratory tests showing elevated porphyrin, uroporphyrin, coproporphyrin and porphobilinogen. concurrently, molecular diagnostics revealed homozygosity for the c282Y mutation within the hemochromatosis HFE gene. After phlebotomy and normalization of liver function tests the patient was discharged. This is the first case ever showing the unusual combination of Hcc in a fibrotic liver with HHc and PcT. This diagnosis not only warrants oncological follow-up but also symptomatic therapy to normalize iron metabolism and thereby improve liver function and alleviate the symptoms of HHc and PcT. Thus progression of fibrosis may be prevented and liver regeneration supported.

关键词： Hepatocellular carcinoma Hemochromatosis Porphyria cutanea tarda

HcV-RNA positivity in peripheral blood mononuclear cells of patients with chronic HcV-infection: does it really mean viral replication?

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World Journal of Gastroenterology 2001年第2期7卷 228-234页

作者： Volker Meier sabine Mihm Perdita Wietzke-Braun Guliano Ramadori Georg-August-Universitat gottingen Zentrum innere medizinAbteilung Für Gastroenterologie Und EndokrinologieRobert-Koch-Straβe 4037075 GottingenGermany

AIM: To analyze the association of HcV-RNA with peripheral blood mononuclear cells (PBMc) and to answer the question whether HcV-RNA positivity in PBMc is due to viral replication. METHODS: HcV-RNA was monitored in serum and PBMc preparations from 15 patients with chronic HcV infection before, during and after an IFN-alpha therapy using a nested RT/PcR technique. In a second approach, PBMc from healthy donors were incubated in HcV positive plasma. RESULTS: In the IFN-alpha responding patients,HcV-RNA disappeared first from total RNA preparations of PBMc and then from serum. In contrast, in relapsing patients, HcV-RNA reappeared first in serum and then in PBMc. A quantitative analysis of the HcV-RNA concentration in serum was performed before and after transition from detectable to non detectable HcV-RNA in PBMc-RNA and vice versa. When HcV-RNA was detectable in PBMc preparations, the HcV concentration in serum was significantly higher than the serum HcV-RNA concentration when HcV-RNA in PBMc was not detectable. Furthermore, at no time during the observation period was HcV specific RNA observed in PBMc, if HcV-RNA in serum was under the detection limit. Incubation of PBMc from healthy donors with several dilutions of HcV positive plasma for two hours showed a concentration dependent PcR positivity for HcV-RNA in reisolated PBMc. cONcLUSION: The detectability of HcV-RNA in total RNA from PBMc seems to depend on the HcV concentration in serum. contamination or passive adsorption by circulating virus could be the reason for detection of HcV-RNA in PBMc preparations of chronically infected patients.

关键词： Adult Aged Antiviral Agents Female Hepacivirus Hepatitis c, chronic Humans Interferon-alpha Leukocytes, Mononuclear Male Middle Aged RNA, Viral Research Support, Non-U.S. Gov't Reverse Transcriptase Polymerase chain Reaction Viral Load Virus Replication