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| 1 | Challenges in the diagnosis and treatment of gestational trophoblastic neoplasia worldwide显示文摘Gestational trophoblastic neoplasia(GTN) is a rare tumor that originates from pregnancy that includes invasive mole, choriocarcinoma(CCA), placental site trophoblastic tumor and epithelioid trophoblastic tumor(PSTT/ETT). GTN presents different degrees of proliferation, invasion and dissemination, but, if treated in reference centers, has high cure rates, even in multi-metastatic cases.The diagnosis of GTN following a hydatidiform molar pregnancy is made according to the International Federation of Gynecology and Obstetrics(FIGO)2000 criteria: four or more plateaued human chorionic gonadotropin(hCG)concentrations over three weeks; rise in hCG for three consecutive weekly measurements over at least a period of 2 weeks or more; and an elevated but falling hCG concentrations six or more months after molar evacuation. However,the latter reason for treatment is no longer used by many centers. In addition,GTN is diagnosed with a pathological diagnosis of CCA or PSTT/ETT. For staging after a molar pregnancy, FIGO recommends pelvic-transvaginal Doppler ultrasound and chest X-ray. In cases of pulmonary metastases with more than 1cm, the screening should be complemented with chest computed tomography and brain magnetic resonance image. Single agent chemotherapy, usually Methotrexate(MTX) or Actinomycin-D(Act-D), can cure about 70% of patients with FIGO/World Health Organization(WHO) prognosis risk score ≤ 6(low risk), reserving multiple agent chemotherapy, such as EMA/CO(Etoposide,MTX, Act-D, Cyclophosphamide and Oncovin) for cases with FIGO/WHO prognosis risk score ≥ 7(high risk) that is often metastatic. Best overall cure rates for low and high risk disease is close to 100% and > 95%, respectively. The management of PSTT/ETT differs and cure rates tend to be a bit lower. The early diagnosis of this disease and the appropriate treatment avoid maternal death,allow the healing and maintenance of the reproductive potential of these women. | Antonio Braga Paulo Mora Andréia Cristina de Melo Angélica Nogueira-Rodrigues Joffre Amim-Junior Jorge Rezende-Filho Michael J Seckl | 2019 | World Journal of Clinical Oncology2019，10，2： | 15 |
| 2 | Acute cholestatic hepatitis caused by amoxicillin/ clavulanate显示文摘Amoxicillin/clavulanate is a synthetic penicillin that is currently commonly used,especially for the treatment of respiratory and cutaneous infections.In general,it is a well-tolerated oral antibiotic.However,amoxicillin/clavulanate can cause adverse effects,mainly cutaneous,gastrointestinal,hepatic and hematologic,in some cases.Presented here is a case report of a 63-yearold male patient who developed cholestatic hepatitis after recent use of amoxicillin/clavulanate.After 6 wk of prolonged use of the drug,he began to show signs of cholestatic icterus and developed severe hyperbilirubinemia(total bilirubin>300 mg/L).Diagnostic investigation was conducted by ultrasonography of the upper abdomen,serum tests for infection history,laboratory screening of autoimmune diseases,nuclear magnetic resonance(NMR)of the abdomen with bile duct-NMR and transcutaneous liver biopsy guided by ultrasound.The duration of disease was approximately 4 mo,with complete resolution of symptoms and laboratory changes at the end of that time period.Specific treatment was not instituted,only a combination of anti-emetic(metoclopramide)and cholestyramine for pruritus. | Daniel Oliveira Beraldo Joanderson Fernandes Melo Alexandre Vidal Bonfim Andrei Alkmim Teixeira Ricardo Alkmim Teixeira André Loyola Duarte | 2013 | World Journal of Gastroenterology2013，19，46： | 2 |
| 3 | Modelling the metabolic action of human and rat CYP1A2 and its relationship with the carcinogenicity of heterocyclic amines显示文摘 | Rute Da Fonseca Maria Cristina Menziani Andre Melo | 2003 | Molecular Physics2003，，17： | 1 |
| 4 | The Resin from Protium heptaphyllum Prevents High-Fat Diet-Induced Obesity in Mice: Scientific Evidence and Potential Mechanisms显示文摘 | Karine Maria Martins Bezerra Carvalho José Delano Barreto Marinho Filho Tiago Sousa de Melo Ana Jérsia Araújo Josiane da Silva Quetz Maria do Perpétuo Socorro Saldanha da Cunha Karina Moura de Melo Armenio Andre de Carvalho Almeida da Silva Adriana Rocha | 2015 | Evidence-Based Complementary and Alternative Medicine2015，，： | 1 |
| 5 | First-line cisplatin,docetaxel,and cetuximab for patients with recurrent or metastatic head and neck cancer:A multicenter cohort study显示文摘BACKGROUND The targeted therapy cetuximab[directed at the epidermal growth factor receptor(EGFR)]in combination with 5-fluorouracil and platinum-based chemotherapy(the EXTREME regimen)has shown substantial efficacy for patients with recurrent or metastatic squamous cell carcinoma of the head and neck(R/M SCCHN).Thus,this scheme has been established as the preferred first-line option for these patients.However,more recently,a new strategy combining platinum,taxanes,and cetuximab(the TPEx regimen)has demonstrated similar efficacy with a more favorable toxicity profile in clinical trials.AIM To evaluate the safety and efficacy of the TPEx scheme as first-line therapy in advanced SCCHN in a multicenter cohort study.METHODS This retrospective multicenter cohort study included patients with histologically confirmed recurrent or metastatic SCCHN treated with first-line TPEx at five medical centers in Argentina between January 1,2017 and April 31,2020.Chemotherapy consisted of four cycles of docetaxel,cisplatin,and cetuximab followed by cetuximab maintenance therapy.Clinical outcomes and toxicity profiles were collected from medical charts.Treatment response was assessed by the investigator in accordance with Response Evaluation Criteria in Solid Tumors(version 1.1).Adverse events were graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events(version 4.0).RESULTS Twenty-four patients were included.The median age at diagnosis was 58 years(range:36-77 years).The majority of patients(83.3%)received at least four chemotherapy cycles in the initial phase.In the included group,the overall response rate was 62.5%,and 3 patients achieved a complete response(12.5%).The median time to response was 2.4 mo[95% confidence interval(CI):1.3-3.5].With a median follow-up of 12.7 mo(95%CI:8.8-16.6),the median progression-free survival(PFS)was 6.9 mo(95%CI:6.5-7.3),and the overall survival rate at 12 mo was 82.4%.Patients with documented tumor response showed a better PFS than those with disease stabilization or progression[8.5 mo(95%CI:5.5-11.5)and 4.5 mo(95%CI:2.5-6.6),respectively;P=0.042].Regarding the safety analysis,two-thirds of patients reported at least one treatment-related adverse event,and 25% presented grade 3 toxicities.Of note,no patient experienced grade 4 adverse events.CONCLUSION TPEx was an adequately tolerated regimen in our population,with low incidence of grade 3-4 adverse events.The median PFS were consistent with those in recent reports of clinical trials evaluating this treatment combination.This regimen may be considered an attractive therapeutic strategy due to its simplified administration,decreased total number of chemotherapy cycles,and treatment tolerability. | Agustin Falco Mariano Leiva Albano Blanco Guido Cefarelli Andres Rodriguez Juan Melo Federico Cayol Manglio Miguel Rizzo Alejandro Sola Hernan Rodriguez Montani Matias Chacon Diego Enrico Federico Waisberg | 2022 | World Journal of Clinical Oncology2022，13，2： | 1 |
| 6 | A theoretical interpretation of the color of two classes of pyranoanthocyanins显示文摘 | Alexandre R.F. Carvalho Joana Oliveira Victor de Freitas Nuno Mateus André Melo | 2010 | Journal of Molecular Structure: THEOCHEM2010，，1： | 1 |
| 7 | A computational study of vinylpyranoanthocyanin-phenolic pigments (portisins)显示文摘 | Alexandre R.F. Carvalho Joana Oliveira Victor de Freitas Artur Silva Nuno Mateus André Melo | 2009 | Journal of Molecular Structure: THEOCHEM2009，，1： | 1 |
| 8 | First-Line Paclitaxel and Carboplatin in Persistent/Recurrent or Advanced Cervical Cancer: A Retrospective Analysis of Patients Treated at Brazilian National Cancer Institute显示文摘 | álvaro Henrique Ingles Garces Paulo Alexandre Ribeiro Mora Flávia Vieira Guerra Alves Claudio Calazan do Carmo Rachele Grazziotin Anna Cristina Ferr?o Mangia Fernandes Angélica Nogueira-Rodrigues Andréia Cristina de Melo | 2013 | International Journal of Gynecological Cancer2013，，4： | 1 |
| 9 | Structural modeling based on sequential restoration of gravitational salt deformation in the Santos Basin (Brazil)显示文摘 | Sávio Francis de Melo Garcia Jean Letouzey Jean-Luc Rudkiewicz André Danderfer Filho Dominique Frizon de Lamotte | 2012 | Marine and Petroleum Geology2012，，1： | 1 |
| 10 | Physiological responses to salt stress in young umbu plants显示文摘 | Elizamar Ciríaco da Silva Rejane Jurema Mansur Custódio Nogueira Francisco Pinheiro de Araújo Natoniel Franklin de Melo André Dias de Azevedo Neto | 2007 | Environmental and Experimental Botany2007，，1： | 1 |
| 11 | Enterobacteria and Vibrio from Macrobrachium amazonicum prawn farming in Fortaleza,Ceará,Brazil显示文摘Objective:To investigate the isolation of enterobacteria associated with Macrobrachium amazonicum(M.amazonicum) farming and evaluate the in vitro antimicrobial susceptibility of Vibrio strains.Methods:Strains were isolated from female M.amazonicum prawns and environmental and hatchery water.Biochemical assays were used to identify bacterial genera and those belonging to the genus Vibrio were submitted to further analyses for species identification,through Vitek 2 automated system and scrotyping.Susceptibility test was performed according to Clinical Laboratory Standards Institute.Results:The following genera of enlerobacteria were recovered:Enterobacter(n=11),Citrobacter(n=10),Proteus(n=2),Serratia(n=2),Kluyvera(n=2),Providencia(n=2),Cedecea(n=1),Escherichia(n=1).Edwardsiella(n=1) and BulliauxeUa(n=1).As for Vibrio,three species were identified:Vibrio cholerae non-O1/non-O139(n=4).Vibrio vulnificus(V.vulnificus)(n=1) and Vibrio mimicus(n=1).Vibrio spp.showed minimum inhibitory concentrations values within the susceptibility range established by Clinical Laboratory Standards Institute for almost all antibiotics,except for V.vulnificus,which presented intermediate profile to ampicillin.Conclusions:Enterobacteria do not seem to be the most important pathogens associated with M.amazonicum farming,whereas the recovery of Vibrio spp.from larviculture,with emphasis on Vibrio cholerae and V.vulnificus,deserves special attention due to their role as potentially zoonotic aquaculture-associated pathogens.Furthermore,the intermediate susceptibility of V.vulnificus to ampicillin reflects the importance of monitoring drug use in prawn farming. | Débora de Souza Collares Maia Castelo-Branco Jamille Alencar Sales Raimunda Samia Nogueira Brilhante Glaucia Morgana de Melo Guedes Yago Brito de Ponte Celia Maria de Souza Sampaio Tereza de Jesus Pinheiro Gomes Bandeira José Luciano Bezerra Moreira Lucas Pereira de Alencar Manoel de Araújo Neto Paiva Rossana de Aguiar Cordeiro André Jalles Monteiro Waldemiro de Aquino Pereira-Neto José Júlio Costa Sidrim Marcos Fábio Gadelha Rocha | 2016 | Asian Pacific Journal of Tropical Medicine2016，9，1： | 0 |
| 12 | Influence of fire on woody vegetation of savanna and forest formations in the Cerrado biome显示文摘Wildfires have environmental,economic,and social impacts,and can shape the landscape and benefit ecosystems such as the Cerrado.This study evaluated the diversity,similarity,and floristic and structural differences of woody savanna and forest formations of the Cerrado,when affected and not affected by fire.Twenty-eight 25-400m2 plots were randomly allocated and divided into Burnt Cerrado and Unburnt Cerrado,Burnt Forest,and Unburnt Forest,and divided into three levels of inclusion according to diameter class(smaller than 2 cm,2-5 cm and larger than5 cm).Species were identified,DBH and height measured,and phyto sociological parameters such as volume,diversity,and floristic similarity evaluated.Burnt Cerrado had lower diversity,density,and dominance at all inclusion levels compared to the Unburnt Cerrado,and showed similarities between treatments at the inclusion levels.Burnt Forest had smaller differences in diversity,density,and dominance than Unburnt Forest.Forest formation was similar at level 1 of inclusion and in the total area.However,it was dissimilar at lower levels.The lower density and diversity of species at the lowest levels of inclusion was associated with mortality from fire. | Aline das Gracas Costa Fillipe Tamiozzo Pereira Torres Gumercindo Souza Lima Fabiano Rodrigues de Melo Carlos Moreira Miquelino Eleto Torres Bruno Leao Said Schettini Vicente Paulo Santana Neto AndréLuiz Lopes de Faria | 2023 | Journal of Forestry Research2023，34，5： | 0 |
| 13 | Effectiveness of different biochars in remediating a salt-affected Luvisol in Northeast Brazil显示文摘Biochar has been proposed as a soil amendment to reclaim salt-affected soils.However,the evaluation of the different biochar types in these soils is essential due to the significant variation among biochar feedstocks.In this study,biochars from sugarcane bagasse(SB),orange bagasse(OB),and corncob(CB)were applied alone and in the presence of gypsum(G)to test their potential to remediate a highly degraded saline-sodic soil in Brazil´s Northeast region.For that,we conducted a laboratory column-leaching experiment and a greenhouse study.After the column-leaching test,we analyzed the sodium adsorption ratio(SAR),the electrical conductivity of the saturation extract(ECe),the concentrations of major ions,and the exchangeable sodium percentage(ESP).Maize plants were grown in the leached soil in a greenhouse.Sugarcane-and corncob-derived biochars were more efficient than gypsum in reducing the soil salinity,bringing the indicators below threshold values,and optimizing soil reclamation time.Soil ECe,SAR,and ESP were reduced to 3.42 dS m−1,1.64(mmolc dm−3)0.5 and 4.86%,respectively,in the SB treatment;and to 3.19 dS m−1,0.88(mmolc dm−3)0.5 and 2.53%,respectively,in the CB treatment.Orange bagasse biochar did not effectively reduce the salinity indicators.All biochar treatments improved seed germination and plant growth.The SB,CB,SBG,and CBG treatments increased plant height(478–558%),shoot mass(783–983%),and root mass(386–500%),respectively.Therefore,the application of SB and CB is an effective alternative to remediate saline-sodic soils and to reduce the impact of soil salinity in the environment. | Wallace Melo dos Santos Maria Isidoria Silva Gonzaga JoséAiron da Silva AndréQuintão de Almeida JoséCarlos de Jesus Santos Thomas Antonio Silva Gonzaga Idamar da Silva Lima EloáMoura Araújo | 2021 | Biochar2021，3，2： | 0 |
| 14 | CXCL9 and CXCL10 display an agedependent profile in Chagas patients:a cohort study of aging in Bambui,Brazil显示文摘Background:Chagas disease is endemic in Latin America and still represents an important public health problem in the region.Chronic cardiomyopathy is the most significant chronic form due to its association with morbidity and mortality.The last decade has seen increasing evidence that inflammatory cytokines and chemokines are responsible for the generation of inflammatory infiltrate and tissue damage,with chronic chagasic cardiomyopathy patients presenting a pro-inflammatory immune response.Although studies have evaluated the role of chemokines in experimental T.cruzi infection,few have addressed their systemic profile,especially for human infection and in aging populations.The present work aimed to use the data from a large population based study of older adults,conducted in an endemic area for Chagas disease,to examine the association between serum levels of cytokines and chemokines,T.cruzi infection and electrocardiogram(ECG)abnormality.Methods:The present work evaluated serum levels of CCL2,CXCL9,CXCL10,CCL5,CXCL8,IL-1β,IL-6,TNF,IL-12 and IL-10 by Flow Cytometric Bead Array assay(CBA)and the results expressed in pg/ml.The baseline survey started in January 1st 1997,with 1284 participants of an aged population-based cohort.Participants signed an informed consent at baseline and at each subsequent visit and authorized death certificate and medical records verification.Results:Our results demonstrated that Chagas disease patients had higher serum levels of CXCL9,CXCL10 and IL-1βand lower serum levels of CCL5 than non-infected subjects.Moreover,our data demonstrated that CXCL9 and CXCL10 increased in an age-dependent profile in Chagas disease patients.Conclusion:Together,this study provided evidences that serum biomarkers increase along the age continuum and may have potential implications for establishing clinical management protocols and therapeutic intervention in Chagas disease patients. | Fernanda Fortes de Araújo Karen Cecília Lima Torres Sérgio Viana Peixoto Antonio Luiz Pinho Ribeiro Juliana Vaz Melo Mambrini Vitor Bortolo Rezende Maria Luiza Lima Silva Antônio Ignácio Loyola Filho Andréa Teixeira-Carvalho Maria Fernanda Lima-Costa Olindo Assis Martins-Filho | 2020 | Infectious Diseases of Poverty2020，9，3： | 0 |
| 15 | Investigations on the Thermodynamic Stability and Availability of Nutrients for Plants by Humic Substances Extracted from Peat Samples显示文摘 | Camila De Almeida Melo Lilian Karla De Oliveira Bruno Barboza Cunha Leonardo Femandes Fraceto Andre Henrique Rosa | 2015 | Journal of Environmental Science and Engineering(A)2015，4，7： | 0 |
| 16 | Epidemiological and clinical characteristics of COVID-19 in a Brazilian public hospital显示文摘BACKGROUND The coronavirus disease 2019(COVID-19)pandemic has become a major health concern worldwide.In that context,the understanding of epidemiological and clinical features associated with the disease and its severity is crucial for the establishment of strategies aimed at disease control and remedy.AIM To describe epidemiological features,signs,symptoms,and laboratory findings among severely ill COVID-19 patients from an inten-sive care unit in northeastern Brazil as well as to evaluate predictor factors for disease outcomes.METHODS This is a prospective single-center study that evaluated 115 patients admitted to the intensive care unit in a northeastern Brazilian hospital.RESULTS The patients had a median age of 65.60±15.78 years.Dyspnea was the most frequent symptom,affecting 73.9%of the patients,followed by cough(54.7%).Fever was reported in approximately one-third of patients and myalgia in 20.8%of the patients.At least two comorbidities were found in 41.7%of the patients,and hypertension was the most prevalent(57.3%).In addition,having two or more comorbidities was a predictor of mortality,and lower platelet count was positively associated with death.Nausea and vomiting were two symptoms that were predictors of death,and the presence of a cough was a protective factor.CONCLUSION This is the first report of a negative correlation between cough and death in severely ill severe acute respiratory syndrome coronavirus 2-infected individuals.The associations between comorbidities,advanced age,and low platelet count and the outcomes of the infection were similar to the results of previous studies,highlighting the relevance of these features. | Fillipe Dantas Pinheiro Luana Weber Lopes Rafael Santos Dantas Miranda Dórea Glauber Rocha Lima Araújo Filipe Antônio França da Silva Breno Bittencourt de Brito Maria Luísa Cordeiro Santos Geovani Moreno Santos Júnior Maria Teresa Araújo de Lorenzo Barcia Renata de Amorim Marques AndréBezerra Botelho Anna Carolina Saúde Dantas Davi Tanajura Costa Adriano Fernandes Teixeira Cláudio Lima Souza Lucas Miranda Marques Guilherme Barretos Campos Márcio Vasconcelos Oliveira Dulciene Maria de Magalhães Queiroz Fabrício Freire de Melo | 2023 | World Journal of Clinical Cases2023，11，8： | 0 |
| 17 | Fungal diversity notes 1277-1386:taxonomic and phylogenetic contributions to fungal taxa显示文摘This is the twelfth contribution to the Fungal Diversity Notes series on fungal taxonomy,based on materials collected from many countries which were examined and described using the methods of morphology,anatomy,and strain culture,combined with DNA sequence analyses.110 taxa are described and illustrated,including five new genera,92 new species,eight new combinations and other taxonomic contributions(one new sequenced species,one new host and three new records)which are accommodated in 40 families and 1 incertae sedis in Dothideomycetes.The new genera are Amyloceraceomyces,Catenuliconidia,Hansenopezia,Ionopezia and Magnopulchromyces.The new species are Amyloceraceomyces angustisporus,Amylocorticium ellipsosporum,Arthrinium sorghi,Catenuliconidia uniseptata,Clavulina sphaeropedunculata,Colletotrichum parthenocissicola,Coniothyrium triseptatum,Cortinarius indorusseus,C.paurigarhwalensis,C.sinensis,C.subsanguineus,C.xiaojinensis,Diaporthe pimpinel-lae,Dictyosporella guizhouensis,Diplodia torilicola,Fuscoporia marquesiana,F.semiarida,Hansenopezia decora,Helicoarcta-tus thailandicus,Hirsutella hongheensis,Humidicutis brunneovinacea,Lentaria gossypina,L.variabilis,Lycoperdon lahorense,L.pseudocurtisii,Magnopulchromyces scorpiophorus,Moelleriella gracilispora,Neodevriesia manglicola,Neodidymelliopsis salvia,N.urticae,Neoroussoella magnoliae,Neottiella gigaspora,Ophiosphaerella chiangraiensis,Phaeotremella yunnanensis,Podosphaera yulii,Rigidoporus juniperinus,Rhodofomitopsis pseudofeei,Russula benghalensis,Scleroramularia vermispora,Scytinopogon minisporus,Sporormurispora paulsenii,Thaxteriellopsis obliqus,Tomentella asiae-orientalis,T.atrobadia,T.atrocastanea,T.aureomarginata,T.brevis,T.brunneoflava,T.brunneogrisea,T.capitatocystidiata,T.changbaiensis,T.citri-nocystidiata,T.coffeae,T.conclusa,T.cystidiata,T.dimidiata,T.duplexa,T.efibulata,T.efibulis,T.farinosa,T.flavidobadia,T.fuscocrustosa,T.fuscofarinosa,T.fuscogranulosa,T.fuscopelliculosa,T.globospora,T.gloeocystidiata,T.griseocastanea,T.griseofusca,T.griseomarginata,T.inconspicua,T.incrustata,T.interrupta,T.liaoningensis,T.longiaculeifera,T.longiechinuli,T.megaspora,T.olivacea,T.olivaceobrunnea,T.pallidobrunnea,T.pallidomarginata,T.parvispora,T.pertenuis,T.qingyuanensis,T.segregata,T.separata,T.stipitata,T.storea,Trichoderma ceratophylletum,Tyromyces minutulus,Umbelopsis heterosporus and Xylolentia reniformis.The new combinations are Antrodiella descendena,Chloridium macrocladum,Hansenopezia retrocurvata,Rhodofomitopsis monomitica,Rh.oleracea,Fuscoporia licnoides,F.scruposa and Ionopezia gerardii.A new sequenced species(Graphis supracola),one new host(Aplosporella prunicola)and three new geographical records(Golovinomyces monardae,Paradictyoarthrinium diffractum and Prosthemium betulinum),are reported. | Hai-Sheng Yuan Xu Lu Yu-Cheng Dai Kevin D.Hyde Yu-He Kan Ivana Kušan Shuang-Hui He Ning-Guo Liu V.Venkateswara Sarma Chang-Lin Zhao Bao-Kai Cui Nousheen Yousaf Guangyu Sun Shu-Yan Liu Fang Wu Chuan-Gen Lin Monika C.Dayarathne Tatiana Baptista Gibertoni Lucas B.Conceição Roberto Garibay-Orijel Margarita Villegas-Ríos Rodolfo Salas-Lizana Tie-Zheng Wei Jun-Zhi Qiu Ze-Fen Yu Rungtiwa Phookamsak Ming Zeng Soumitra Paloi Dan-Feng Bao Pranami DAbeywickrama De-Ping Wei Jing Yang Ishara S.Manawasinghe Dulanjalee Harishchandra Rashika S.Brahmanage Nimali Ide Silva Danushka S.Tennakoon Anuruddha Karunarathna Yusufjon Gafforov Dhandevi Pem Sheng-Nan Zhang AndréL.C.Mde Azevedo Santiago Jadson Diogo Pereira Bezerra Bálint Dima Krishnendu Acharya Julieta Alvarez-Manjarrez Ali H.Bahkali Vinod K.Bhatt Tor Erik Brandrud Timur S.Bulgakov E.Camporesi Ting Cao Yu-Xi Chen Yuan-Yuan Chen Bandarupalli Devadatha Abdallah M.Elgorban Long-Fei Fan Xing Du Liu Gao Camila Melo Gonçalves Luis F.P.Gusmão Naruemon Huanraluek Margita Jadan Ruvishika S.Jayawardena Abdul Nasir Khalid Ewald Langer Diogo X.Lima Nelson Correia de Lima-Júnior Carla Rejane Sousa de Lira Jian-Kui(Jack)Liu Shun Liu Saisamorn Lumyong Zong-Long Luo Neven Matočec M.Niranjan JoséRibamar Costa Oliveira-Filho Viktor Papp Eduardo Pérez-Pazos Alan J.L.Phillips Peng-Lei Qiu Yihua Ren Rafael F.Castañeda Ruiz Kamal C.Semwal Karl Soop Carlos A.Fde Souza Cristina Maria Souza-Motta Li-Hua Sun Meng-Le Xie Yi-Jian Yao Qi Zhao Li-Wei Zhou | 2020 | Fungal Diversity2020，，5： | 0 |
| 18 | Carbonates and organic matter in soils characterized by reflected energy from 350-25000 nm wavelength显示文摘The soil carbon pool which is the sum of soil organic carbon(SOC)and soil inorganic carbon(SIC)is the second largest active store of carbon after the oceans and it is an important component of the global carbon cycle.Hence,accurate estimation of SOC and SIC as important carbon reservoirs in terrestrial ecosystems using fast,inexpensive and non-destructive methods is crucial for planning different climate change policies.The aim of the current research was to examine the effectiveness of Vis-NIR(visible and near-infrared spectroscopy:350-2500 nm)and MIR(mid-infrared spectroscopy:4000-400 cm-1)to characterize and estimate soil organic matter(SOM)and carbonates as main components of soil carbon stocks in Juneqan,Charmahal va Bakhtiari,Iran.To do so,a total of 548 soil samples from this area were collected(October 2015)and analyzed in laboratory(August 2017).In order to develop models capable of predicting SOM and carbonates content,seven spectral preprocessing methods comprising Absorbance(Abs),De-trending(Det),Continuum removal(CR),Savitzky-Golay derivatives(SGD),standard normal variate transformation(SNV),multiplicative scatter correction(MSC)and Normalization by range(NBR)were conducted along with five multivariate methods including Random Forest(RF),Partial Least-Squares Regression(PLSR),Artificial Neural Network(ANN),Support Vector Machine(SVM)and Gaussian Process Regression(GPR).The content of carbonates caused spectral reflectance intensity to augment on several ranges of spectrum and strong absorption feature at 2338 nm in the Vis-NIR and 714,850,870,1796,2150 and 2510 cm-1 in the MIR spectra range.SOM absorbed energy in several ranges,but also showed specific peaks in MIR.Both facts are associated with the structure of carbonates and SOM and its interaction with energy.The best combination of preprocessing and calibration models for carbonates quantification in Vis-NIR spectra was Det/PLSR(R2=0.74,RPD=2.19,RMSE=6.45).For SOM,it was Det/PLSR(R2=0.82,RPD=2.41,RMSE=0.75).The Det/RF(R2=0.87,RPD=2.44,RMSE=0.66)for the quantification of SOM and MSC/RF(R2=0.84,RPD=2.84,RMSE=5.50)for carbonates in MIR spectra range showed the greatest results.The stronger occurrence of spectral bands in MIR as well as the specificity of the absorption features indicated that this range produced better predictions.The obtained results highlighted the significant role of soil spectroscopy technique in predicting SOC and soil carbonates as key components of soil carbon stocks in the study area.Therefore,this technique can be used as a more cost-effective,time saving and nondestructive alternative to traditional methods of soil analysis. | Najmeh ASGARI Shamsollah AYOUBI Jose Alexandre Melo DEMATTê AndréCarnieletto DOTTO | 2020 | Journal of Mountain Science2020，17，7： | 0 |
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