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Amniotic membrane as a potent source of stem cells and a matrix for engineering heart tissue

Journal of Biomedical Science and Engineering 2013年第12期6卷 1178-1185页

作者： Julio Cesar Francisco Ricardo Correa Cunha Rossana Baggio Simeoni Luiz Cesar Guarita-Souza Reginaldo Justino Ferreira ana carolina irioda carolina Maria C.Oliveira Souza Garikipati Venkata Naga Srikanth Soniya Nityanand Juan Carlos Chachques Katherine Athayde Teixeira de Carvalho Bioprocess Engineering and Biotechnology Department Federal University of ParanáCuritibaBrazil Cell Therapy and Biotechnology in Regenerative Medicine Research Group Pele Pequeno Príncipe InstituteCuritibaBrazil Experimental Laboratory of Institute of Biological and Health Sciences Pontificial Catholic University of Paraná(PUCPR)Rua Imaculada ConceicaoCuritibaBrazil Federal University of Technology CuritibaBrazil Department of Hematology Stem Cell Research FacultySanjay Gandhi Post-Graduate Institute of Medical SciencesLucknowIndia Laboratory of Biosurgical Research Pompidou HospitalUniversity of Paris DescartesParisFrance

Existing therapies for the treatment of chronic heart failure still have some limitations and there is a pressing need for the development of new therapeutic modalities. The amniotic membrane has been used for the treatment of various diseases, such as conjunctive defects;however, the mechanisms behind its repair functions are still unclear. Regenerative medicine is seeking newer alternatives and among them, biomaterials have emerged in recent years for developing and manipulating molecules, cells, tissues or organs grown in laboratories in order to replace human body parts. Many such materials have been used for this purpose, either synthetically or biologically, in order to provide new medical devices. This review provides a wider view of the regeneration potential of the use of amniotic membrane as a potential biomaterial to facilitate the implementation of new research in surgical procedures. Amniotic membrane appears to be an alternative source of stem cells as well as an excellent biomaterial for cell-based therapeutic applications in engineering heart tissue.

关键词： Amniotic Membrane Heart Tissue Engineering Stem Cells

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Resilience to structural and molecular changes in excitatory synapses in the hippocampus contributes to cognitive function recovery in Tg2576 mice

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Neural Regeneration Research 2024年第9期19卷 2068-2074页

作者： carolina Aguado Sara Badesso JoséMartínez-Hernández Alejandro Martín-Belmonte Rocío Alfaro-Ruiz Miriam Fernández ana Esther Moreno-Martínez Mar Cuadrado-Tejedor ana García-Osta Rafael Luján Synaptic Structure Laboratory Instituto de Investigación en Discapacidades Neurológicas(IDINE)Department of Medical SciencesFacultad de MedicinaUniversidad de Castilla-La ManchaCampus BiosanitarioAlbaceteSpain Gene Therapy for Neurological Disease Program Center for Applied Medical Research(CIMA)University of NavarraInstituto de Investigación Sanitaria de Navarra(IdiSNA)PamplonaSpain Pharmacology Unit Department of Pathology and Experimental TherapeuticsFaculty of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaBarcelonaSpain Neuropharmacology and Pain Group Neuroscience ProgramInstitut d’InvestigacióBiomèdica de BellvitgeIDIBELLL’Hospitalet de LlobregatSpain Department of Pathology Anatomy and PhysiologySchool of MedicineUniversity of NavarraPamplonaSpain UniversitéGrenoble Alpes Grenoble Institut des NeurosciencesGrenobleFrance

Plaques of amyloid-β(Aβ)and neurofibrillary tangles are the main pathological characteristics of Alzheimer’s disease(AD).However,some older adult people with AD pathological hallmarks can retain cognitive *** the factors that lead to this cognitive resilience to AD offers promising prospects for identifying new therapeutic *** hypothesis focuses on the contribution of resilience to changes in excitatory synapses at the structural and molecular levels,which may underlie healthy cognitive performance in aged AD *** the Morris Water Maze test,we selected resilient(asymptomatic)and cognitively impaired aged Tg2576 *** the enzyme-linked immunosorbent assay showed similar levels of Aβ42 in both experimental groups,western blot analysis revealed differences in tau pathology in the pre-synaptic supernatant *** further investigate the density of synapses in the hippocampus of 16-18 month-old Tg2576 mice,we employed stereological and electron microscopic *** findings indicated a decrease in the density of excitatory synapses in the stratum radiatum of the hippocampal CA1 in cognitively impaired Tg2576 mice compared with age-matched resilient Tg2576 and non-transgenic ***,through quantitative immunoelectron microscopy in the hippocampus of impaired and resilient Tg2576 transgenic AD mice,we uncovered differences in the subcellular localization of glutamate ***,the density of GluA1,GluA2/3,and mGlu5 in spines and dendritic shafts of CA1 pyramidal cells in impaired Tg2576 mice was significantly reduced compared with age-matched resilient Tg2576 and non-transgenic ***,the density of GluA2/3 in resilient Tg2576 mice was significantly increased in spines but not in dendritic shafts compared with impaired Tg2576 and non-transgenic *** subcellular findings strongly support the hypothesis that dendritic spine plasticity and synaptic machinery in the hippocampus play cr

关键词： aging Alzheimer´s disease cognitive hippocampus immunoelectron microscopy resilience synapse

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Preclinical stem cell therapy in Chagas Disease: Perspectives for future research

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World Journal of Transplantation 2013年第4期3卷 119-126页

作者： Katherine Athayde Teixeira de Carvalho Eltyeb Abdelwahid Reginaldo Justino Ferreira ana carolina irioda Luiz Cesar Guarita-Souza Cell Therapy and Biotechnology in Regenerative Medicine Research Group Pequeno Príncipe FacultyPelé Pequeno Príncipe InstituteCuritiba 80250-200ParanáBrazil Bioprocess Engineering and Biotechnology Department Federal University of ParanáCuritiba 81531-970ParanáBrazil CBRC Massachusetts General Hospital/Harvard Medical SchoolCharlestownMa 02129United States Federal University of Technology Curitiba 80230-901ParanáBrazil Experimental Laboratory of Institute of Biological and Health Sciences of Pontifical Catholic University of Parana Curitiba 80215-901ParanáBrazil

Chagas cardiomyopathy still remains a challenging problem that is responsible for high morbidity and mortality in Central and Latin America. Chagas disease disrupts blood microcirculation via various autoimmune mechanisms, causing loss of cardiomyocytes and severe impairment of heart function. Different cell types and delivery approaches in Chagas Disease have been studied in both preclinical models and clinical trials. The main objective of this article is to clarify the reasons why the benefits that have been seen with cell therapy in preclinical models fail to translate to the clinical setting. This can be explained by crucial differences between the cellular types and pathophysiological mechanisms of the disease, as well as the differences between human patients and animal models. We discuss examples that demonstrate how the results from preclinical trials might have overestimated the efficacy of myocardial regeneration therapies. Future research should focus, not only on studying the best cell type to use but, very importantly, understanding the levels of safety and cellular interaction that can elicit efficient therapeutic effects in human tissue. Addressing the challenges associated with future research may ensure the success of stem cell therapy in improving preclinical models and the treatment of Chagas disease.

关键词： Chagas Disease preclinical stem cell therapy co-cultured translation pathophysiologie myoblasts

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Effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet

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World Journal of Gastroenterology 2024年第11期30卷 1545-1555页

作者： Juan Pablo Stefanolo Verónica Segura Martina Grizzuti Abel Heredia Isabel Comino ana Florencia Costa Roberto Puebla María Paz Temprano Sonia Isabel Niveloni Gabriel de Diego María E Oregui Edgardo Gustavo Smecuol Mauricio C de Marzi Elena F Verdú carolina Sousa Julio César Bai Small Bowel Section Department of MedicineGastroenterology Hospital of Buenos Aires“Dr.C.Bonorino Udaondo”Buenos Aires 1264Argentina Department of Microbiology and Parasitology Faculty of PharmacyUniversity of SevilleSeville 41080Spain Department of Medicine Dr.C.Bonorino Udaondo Gastroenterology HospitalBuenos Aires 1264Argentina Basic and Applied Research Group in Immunology and Bioactives(GIBAIB) Institute of Ecology and Sustainable Development(INEDES)National University of LujanLuján 6700Buenos AiresArgentina Department of Medicine Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamilton L8S 4L8OntarioCanada Facultad de Medicina Universidad del SalvadorBuenos Aires C1051ABBArgentina

BACKGROUND The gluten-free diet(GFD)has limitations,and there is intense research in the development of adjuvant *** To examine the effects of orally administered Aspergillus niger prolyl endopeptidase protease(AN-PEP)on inadvertent gluten exposure and symptom prevention in adult celiac disease(CeD)patients following their usual *** This was an exploratory,double-blind,randomized,placebo-controlled trial that enrolled CeD patients on a long-term *** a 4-wk run-in period,patients were randomized to 4 wk of two AN-PEP capsules(GliadinX;AVI Research,LLC,United States)at each of three meals per day or *** endpoints were:(1)Average weekly stool gluten immunogenic peptides(GIP)between the run-in and end of treatments and between AN-PEP and placebo;(2)celiac symptom index(CSI);(3)CeD-specific serology;and(4)quality of *** samples were collected for GIP testing by ELISA every Tuesday and Friday during run-ins and *** Forty patients were randomized for the intention-to-treat analysis,and three were excluded from the per-protocol ***,628/640(98.1%)stool samples were *** was undetectable(0.32μg/g)to potentially cause mucosal *** GIP concentration in the AN-PEP arm was 44.7%lower than in the run-in ***-third of patients exhibiting GIP>0.08μg/g during run-in had lower or undetectable GIP after AN-PEP *** with the run-in period,the proportion of symptomatic patients(CSI>38)in the AN-PEP arm was significantly lower(P<0.03).AN-PEP did not result in changes in specific *** This exploratory study conducted in a real-life setting revealed high adherence to the *** AN-PEP treatment did not significantly reduce the overall GIP stool ***,given the observation of a significantly lower prevale

关键词： Celiac disease Aspergillus niger prolyl endoprotease Gluten immunogenic peptides Trial Symptoms Real-life trial

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围术期神经肌肉阻滞的管理:欧洲麻醉和重症监护学会临床指南

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中华麻醉学杂志 2024年第6期44卷 641-656页

作者： Thomas Fuchs-Buder carolina S.Romero Heidrun Lewald Massimo Lamperti Arash Afshari ana-Marjia Hristovska Denis Schmartz Jochen Hinkelbein Dan Longrois Maria Popp Hans Dde Boer Massimiliano Sorbello Radmilo Jankovic Peter Kranke 法国南锡大学医学院附属医院麻醉学、重症监护与围术期医学科法国南锡54000 巴伦西亚大学综合医院麻醉与重症监护科西班牙巴伦西亚46014 慕尼黑工业大学麻醉学与重症监护科德国慕尼黑80333 克利夫兰阿布扎比诊所麻醉学研究所阿联酋阿布扎比31250 哥本哈根大学医院小儿和产科麻醉科丹麦哥本哈根2100 哥本哈根大学医院麻醉学与重症监护科丹麦赫维德2650 布鲁塞尔自由大学Erasme医院麻醉科比利时布鲁塞尔1070 科隆大学医院麻醉学与重症监护科德国科隆50937 巴黎大学附属比查特克劳德伯纳德医院麻醉学与重症监护医学科法国巴黎75018 维尔茨堡大学医院麻醉学、危重病医学、急诊医学和疼痛医学科德国维尔茨堡97080 格罗宁根大学医院麻醉学、疼痛医学与程序性镇静与镇痛科荷兰格罗宁根9713 GZ 卡坦尼亚大学医院麻醉与重症监护科意大利卡坦尼亚95123 尼什大学医学院尼什临床中心麻醉学与重症治疗科塞尔维亚尼什18000

近来的研究表明,由于围术期神经肌肉阻滞管理不当,肌肉松弛药(肌松药)残留阻滞及其术后并发症的发生率居高不下。需要重视神经肌肉功能监测仪、肌松药及其拮抗剂的合理应用,以利于改善神经肌肉阻滞管理。欧洲麻醉和重症监护学会(Europea... 详细信息

近来的研究表明,由于围术期神经肌肉阻滞管理不当,肌肉松弛药(肌松药)残留阻滞及其术后并发症的发生率居高不下。需要重视神经肌肉功能监测仪、肌松药及其拮抗剂的合理应用,以利于改善神经肌肉阻滞管理。欧洲麻醉和重症监护学会(European Society of anaesthesiology and Intensive Care,ESAIC)首次发布围术期神经肌肉阻滞管理临床指南,旨在为临床医生提供最佳医疗管理的循证建议,以提高围术期患者安全。本指南主要聚焦在3个临床问题:肌松药是否有助于成人气管插管?神经肌肉阻滞深度是否影响腹部手术患者的预后?肌松药残留阻滞的诊断和治疗策略有哪些?根据PICO原则(患者、干预、对照、结局;patient,intervention,comparator,outcome;PICO)构建临床问题并进行文献检索。初始纳入的临床研究为24 000篇,采用逐步筛选策略,最终临床研究88篇纳入指南分析。应用GRADE方法学(Grading of Recommendations,Assessment,Development and Evaluation,GRADE)对结局指标证据、质量等级进行评价。运用两轮德尔菲法收集专家组建议并形成统一推荐:R1推荐应用肌松药辅助气管插管(1A)。R2推荐应用肌松药以减少气管插管导致的咽部和(或)喉部损伤(1C)。R3推荐在快速顺序诱导插管(rapid sequence induction intubation,RSII)时使用短效肌松药,例如琥珀胆碱1 mg/kg或罗库溴铵0.9~1.2 mg/kg(1B)。R4推荐在需要改善外科手术条件时,加深神经肌肉阻滞深度(1B)。R5尚无足够的证据推荐深度神经肌肉阻滞可减轻术后疼痛或降低围术期并发症的发生率(2C)。R6推荐在拇内收肌处刺激尺神经,定量监测神经肌肉阻滞深度以排除肌松药残留阻滞(1B)。R7推荐应用舒更葡糖钠逆转甾体类肌松药(罗库溴铵、维库溴铵)诱导的深、中及浅度神经肌肉阻滞(1A)。R8推荐在使用新斯的明前,TOFr自行恢复至>0.2,并继续定量监测神经肌肉功能,直至TOFr超过0.9(1C)。

关键词：神经肌肉阻滞神经肌肉功能肌松药临床指南罗库溴铵琥珀胆碱外科手术定量监测

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Chemical and spectroscopic characterization of humic substances from sediment and riparian soil of a highly polluted urban river(Suquía River,Córdoba,Argentina)

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International Journal of Sediment Research 2020年第3期35卷 287-294页

作者： carolina Merlo carolina Vázquez ana Graciela Iriarte Carlos Matías Romero Instituto Multidisciplinario de Biologia Vegetal (CONICET) Facultad de Ciencias Agropecuarias Universidad Nacional de Cordoba INFIQC Departament of FisicoquimicaFacultad de Ciencias QuimicasUniversidad Nacional de Cordoba Agriculture and Agri-Food Canada Lethbridge Research and Development Centre Department of Biological Sciences University of Lethbridge

The Suquia River,the largest urban river in Cordoba(Argentina),has been severely polluted for *** must be taken to restore its environmental quality by managing riparian zones for increased water-self *** current study aimed to characterize organic matter(OM) dynamics and humic substances(HS) spectrochemical properties along the lower-middle basin of the Suquia *** soil(0-20 cm) and sediment(0-10 cm) samples were collected from a reference location(S1)and four polluted sites(S2-S5) during a low-flow *** contents of soil and sedimentary OM and HS fractions were analyzed by wet oxidation,as well as HS Fourier transform infrared(FT-IR) and ultraviolet-visible(UV-Vis) spectrochemical *** OM and HS fractions from riparian soil were high upstream of Cordoba City(S1 and S2,50.2-50.4 g/kg OM) and within a 50 km downstream location(S5,30.9 g/kg OM) owing to a surplus of fresh plant biomass-carbon(C) *** heterogeneous sediment samples did not show any significant differences among sites(P> 0.05).The lowest values of the ratio of absorbances at 465 and 665 nm(E4/E6)(1.78) and the Δ log K(0.15) coefficient(a measure of HS maturity degree) were obtained downstream of Cordoba City,for both riparian soil and sediment,indicating that HS were enriched by more condensed aromatic structures within highly degraded portions of the *** samples exhibited similar IR spectra,implying overlapping recalcitrant-C structures at the functional group level,but with different absorbance *** from the current study constitute a baseline for understanding the chemical nature of HS from sediment and riparian soil along the Suquia River and can be used as a reference for future studies tracking OM compositional changes over time.

关键词： Lotic ecosystems Organic matter Humic acids FT-IR spectroscopy UV-Vis spectroscopy

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Tropical dendrochronology applied to invasive tree species in the Brazilian Atlantic Forest

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Journal of Forestry Research 2021年第1期32卷 91-101页

作者： carolina Nogueira Xavier Daniela Granato-Souza ana carolina M.C.Barbosa JoséReinaldo Moreira da Silva Forest Sciences Department Federal University of Lavras(UFLA)C.P.3037Lavras 37200-000Brazil Department of Geosciences University of ArkansasFayettevilleAR 72701USA

The Atlantic Forest is one of the largest and most biodiverse rainforests of South America but anthropogenic activities are drastically changing these *** invasion of alien or exotic species is one of the greatest threats to *** are few studies of invasive species in tropical Brazilian *** research examines growth and ecological aspects of Syzygium cumini and Clitoria fairchildiana,two invasive tree species in the Pedra Branca State Park,an Atlantic Forest remnant in southeastern *** species were successfully dated,indicating an average age of 58 and 31 years,respectively.A positive relationship between growth and precipitation of the previous growing season suggests an ecological adaptive strategy,which could be facilitating their invasion into the *** growth diameter curves indicate slow and fast growth rates for *** and ***,*** release episodes detected in the tree rings indicate increased anthropogenic disturbances over the last 50 years.

关键词： Atlantic Forest biome Invasive species Protected areas Tree rings

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Early detection of tomato bacterial canker by reflectance indices

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Information Processing in Agriculture 2022年第2期9卷 184-194页

作者： Gabriela Cordon carolina Andrade Lucia Barbara ana Maria Romero Universidad de Buenos Aires Consejo Nacional de Investigaciones Cientı´ficas y Te´cnicasInstituto de Investigaciones Fisiolo´gicas y Ecolo´gicas Vinculadas a la Agricultura(IFEVA)Facultad de Agronomı´aBuenos AiresArgentina Universidad de Buenos Aires Facultad de Agronomı´aA´rea de Educacio´n AgropecuariaBuenos AiresArgentina Universidad de Buenos Aires Facultad de Agronomı´aCa´tedra de Fitopatologı´aBuenos AiresArgentina

Early detection of infected asymptomatic plants could prevent the dissemination of tomatobacterial canker throughout the crop and, thus, reduce associated economic losses. Reflectance spectroscopy has been proposed for the detection of diseases in plants, mainlycaused by foliar fungal pathogens. In contrast, bacterial canker is a vascular disease thatdoes not produce visible foliar symptoms until it is too late to avoid contagion to otherplants. The effects of the disease on the conductivity of the xylem have an impact onthe water content of the leaves;initially, a subtle effect that cannot be assessed with thenaked eye but can be evaluated by reflectance spectroscopy. The objective of this workwas to identify indices, based on the reflectance spectral signature of the plants, for thedetection of tomato plants affected by bacterial canker prior to the appearance of symptoms. To verify that the proposed methodology is applicable to a broad range of tomatogenotypes, two experiments were carried out with different tomato cultivars grown in potsand another on the ground in a greenhouse. Plants were inoculated with the pathogenicbacteria and the reflectance spectrum of the apical leaflet of two leaves per plant wereobtained before symptoms expression;several spectral indices were calculated from thereflectance spectra. Three indices, of the shortwave-infrared zone, allowed the detectionof bacterial canker inoculated plants in a fast and non-destructive way, up to one weekbefore symptoms were visible: Normalized Difference Water Index (NDWI), Simple Ratioof Water Index (SRWI) and Water Index 1 180 (WI1180). Our research demonstrates, forthe first time, the usefulness of spectral indices sensitive to water content for the identifi-cation of diseased plants. These indices arise as a promising tool for the early detection ofvascular plant diseases, that could be integrated into sustainable management plans.

关键词： Clavibacter michiganensis subsp. michiganensis Bacterial wilt Reflectance indices Solanum lycopersicum L

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Proactive reconciliation as a tool for integrating mining and milling operations

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International Journal of Mining Science and Technology 2019年第2期29卷 239-244页

作者： ana carolina Chieregati Luiz Eduardo Campos Pignatari Francis Fernand Pitard Homero Delboni Jr Department of Mining and Petroleum Engineering University of Sao Paulo EDEM Engenharia Mineral Francis Pitard Sampling Consultants

Historically, reconciliation has been viewed as a quality test of model estimates as well as a powerful tool for detecting and correcting problems in all stages of mine operations from resource estimation to metal production. If used correctly, reconciliation helps to better predict the life of mine(LOM), improves the adherence of production plans to the respective budget, and allows for effective control of the mining and milling processes. However, the accuracy of reconciliation results requires that all input data must be generated in accordance with the principles of sampling correctness. Furthermore, complete reconciliation systems can become extremely complex and must be carefully analyzed in order to provide realistic and helpful conclusions. Based on these concepts, this paper presents a successful proactive reconciliation system applied to a copper and gold mine in Brazil for monitoring and integrating mining and milling operations.

关键词： Reconciliation Prognostication Sampling Gold Copper

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A long-term record of land use change impacts on sediments in Oualidia lagoon,Morocco

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International Journal of Sediment Research 2014年第1期29卷 1-10页

作者： Mehdi MAanaN ana carolina RUIZ-FERNNDEZ Mohamed MAanaN Paul FATTAL Bendahhou ZOURARAH Mohamed SAHABI Géolittomer UMR 6554 LETG Université de Nantes Marine Geosciences Laboratory URAC 45Earth Sciences departmentFaculty of Sciences Universidad Nacional Autónoma de México.Instituto de Ciencias del Mary Limnología

An integrated approach,involving land use patterns and heavy metal contents of the surficial and cored sediment,was proposed to detect the characteristic spatial and temporal scale of point and non-point source human disturbances on the Oualidia lagoon in *** and description of the temporal and spatial distributions of the main contamination sources of heavy metals are analyzed using statistics and GIS *** results show that surficial sediments are highly enriched in heavy metals compared to their preindustrial background ***-use types affected lagoon sediment pollution in different ways:1) agricultural areas had the highest potential for sediment contamination by heavy metals,particularly Pb,Cu and Hg,2) Ni and Cr are the main pollutants originating from urban sewage and 3) oyster farming and traditional land uses such as salt flats,pastures showed low levels of others *** enrichment factors(normalized by Al) obtained from the sediment cores indicated that the lagoon is(strongly/moderately) polluted by all metals which were attributed to agricultural activities and wastewater discharges from urbanized areas.

关键词： Land use change(LUC) Geographical information systems(GIS) Sediment pollution Risk assessment

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