检索结果-南通市图书馆

An Emergy-Based Approach to Assess and Valuate Ecosystem Services of Tropical Wetland Pastures in Brazil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Ecology 2020年第5期10卷 303-319页

作者： Sandra Aparecida Santos Fabio Takahashi Evaldo luis Cardoso Claudio Flores Luiz Orcirio Fialho de Oliveira Geraldo da Silva e Souza Eliane Goncalves Gomes enrique Ortega Embrapa Pantanal CorumbaMSBrasil Universidade de Vicosa FlorestalMGBrasil Embrapa Gado de Corte Campo GrandeMSBrasil Embrapa Sede BrasiliaDFBrasil Universidade de Campinas Barao GeraldoSPBrasil

Wetland grasslands are important ecosystems for raising beef cattle, because they are highly productive and present forages with high quality. Most of these ecosystems are threatened by overgrazing or by being replaced by exotic pastures. Emergy synthesis approach was used to assess and value the services provided by native pastures wetland under three conservation status and also to compare them to exotic pastures on wetlands. The ecosystem service that was assessed included forage provision for calves production estimated from grazing capacity of cow with calf at the foot. Habitat maintenance to plant diversity and wild herbivores were also evaluated. The results showed that natural wetland pastures with better conservation status provided valuable ecosystem services and are highly renewable. Data envelopment analysis (DEA) showed that regardless of the conservation state of the natural pastures, wet native grasslands were more efficient than wet exotic grasslands. Replacing native pastures by exotic ones may reduce plant diversity and the renewability of the system. The proposed method has a holistic approach to pasture ecosystems and is able to help decision-makers to define sustainable management practices and to subsidise public policies when it comes to payments regarding ecosystem services.

关键词： Data Envelopment Analysis Forage Resources Natural Pasture Plant Diversity Sustainability

Serum levels of chemokines in adolescents with major depression treated with fluoxetine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2020年第8期10卷 175-186页

作者： Francisco Rafael de la Peña Carlos Cruz-Fuentes Lino Palacios Manuel Iván Girón-Pérez Emilio Medina-Rivero Maria Dolores Ponce-Regalado Samantha Alvarez-Herrera Gilberto Pérez-Sánchez enrique Becerril-Villanueva Joséluis Maldonado-García María C Jiménez-Martínez Lenin Pavón Adolescent Clinic Clinical ServicesNational Institute of Psychiatry“Ramón de la Fuente”Mexico City 14370Mexico Department of Psychiatric Genetics Clinical Research BranchNational Institute of Psychiatry“Ramón de la Fuente”Mexico City 14370Mexico Universidad Autónoma de Nayarit Laboratorio de InmunotoxicologíaBoulevard Tepic-Xalisco s/nCd de la Cultura Amado NervoTepic 63000Mexico Centro Nayarita de Innovación y Transferencia de Tecnología A.C.Laboratorio Nacional para la Investigación en Inocuidad Alimentaria-Unidad Nayarit Calle Tres s/n.Cd IndustrialTepic 63000NayaritMexico Unidad de Desarrollo e Investigación en Bioprocesos Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalUnidad Profesional Lázaro CárdenasMexico City 11340Mexico Departamento de Ciencias de Salud Centro Universitario de los AltosUniversidad de Guadalajara Av Rafael Casillas Aceves No.1200Tepatitlán de MorelosJalisco47610Mexico Laboratory of Psychoimmunology National Institute of Psychiatry“Ramón de la Fuente”Mexico City 14370Mexico Department of Immunology and Research Unit Institute of Ophthalmology“Conde de Valenciana Foundation”Mexico City 06800Mexico Department of Biochemistry Faculty of MedicineNational Autonomous University of MexicoMexico City 04510Mexico

BACKGROUND Major depressive disorder(MDD)is a global health issue that affects 350 million people of all *** between 2%and 5.6%of affected individuals are adolescents,research on young patients is *** inflammatory response contributes to the onset of depression,and in adult MDD patients,symptom severity has been linked to chemokine *** To determine the differences in circulatory levels of chemokines in healthy volunteers(HVs)and adolescents with MDD,and assess the changes induced by fluoxetine *** The 22 adolescents with MDD were monitored during the first 8 wk of clinical follow-up and clinical psychiatric evaluation was done using the Hamilton depresión rating scale(HDRS).The serum levels of monocyte chemoattractant protein-1(MCP-1),macrophage inflammatory protein(MIP)-1α,MIP-1β,interleukin(IL)-8,interferon gamma-induced protein(IP)-10,and eotaxin were measured in patients and *** In all cases,significant differences were detected in circulating chemokine levels between patients before treatment and HVs(P<0.0001).All chemokines decreased at 4 wk,but only MCP-1 and IL-8 significantly differed(P<0.05)between 0 wk and 4 *** the patients,all chemokines rose to their initial concentrations by 8 wk vs 0 wk,but only IP-10 did so significantly(P<0.05).All patients experienced a significant decrease in HDRS scores at 4 wk(P<0.0001)and 8 wk(P<0.0001)compared with 0 *** Despite the consumption of fluoxetine,patients had significantly higher chemokine levels,even after considering the improvement in HDRS *** high levels of eotaxin,IP-10,and IL-8 partially explain certain aspects that are affected in MDD such as cognition,memory,and learning.

关键词： Adolescents Major depression Chemokine Fluoxetine Interferon gammainduced protein-10

Sub-Epithelial Connective Tissue Graft to Increase the Volume of Residual Alveolar Bone in the Upper Anterior Sector and Fixed Rehabilitation with Zirconia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Stomatology 2018年第6期8卷 189-195页

作者： Minor enrique Zuniga Araya Rita Elizabeth Martínez Martínez Jose Honorio Olvera Delgado Jaime Alejandro Nieto Ramirez Elena A.Popoca Hernandez Jose luis Ayala Herrera San luis Potosi University San Luis PotosiMexico Universidad Autónoma de San luis Potosí San Luis PotosíMéxico

Background: The collapse of the alveolar ridge in an edentulous area in patients who will undergo oral rehabilitation impedes the harmonic relationship between pontic and ridge. To correct this type of defect there are several surgical techniques that aim to achieve soft tissue augmentation, allowing the conformation of an ideal profile with the use of a pontic. The aim was to demonstrate how the technique of tissue modification in an area with a class b defect of Allen allows the correction of aesthetics in the anterior dental sector. Case presentation: A 41-year-old Mexican woman. Extra and intraoral examination was performed, the dental treatment included connective tissue graft and rehabilitation with Zirconia. Conclusion: Surgery of residual alveolar ridge augmentation with connective tissue graft gives the patient favorable aesthetic results in the anterior area when it will be rehabilitated.

关键词： Esthetic Zone Zirconia Class B Defect of Allen

Diagnosis and management of brain metastases:an updated review from a radiation oncology perspective

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Cancer Metastasis and Treatment 2019年第7期4卷 12-27页

作者： Gutiérrez-Valencia enrique Sánchez-Rodríguez Irving Balderrama-Ibarra Ricardo Fuentes-LaraJesús Rios-Martínez Alan Vázquez Aldana Arroyo Iñigo Bayardo-López luis Hernández ChávezAllan Puebla-Mora Ana Graciela Nader-Roa Liliana Espíritu-Rodríguez Roque Instituto Mexicano del Seguro Social(IMSS) Departamento de Radio-OncologíaCentro Médico Nacional de OccidenteUniversidad de GuadalajaraGuadalajara 44340México Instituto Mexicano del Seguro Social(IMSS) Departamento de Anatomía PatológicaCentro Médico Nacional de OccidenteUniversidad de GuadalajaraGuadalajara 44340México Instituto Mexicano del Seguro Social(IMSS) Departamento de Física MédicaCentro Médico Nacional de OccidenteGuadalajara 44340México

Brain metastasis are the most common intracranial malignancy in the adult population. Their incidence has increased dramatically over the last 20 years, as a result of the increasing number of cases stemming from lung and breast cancer together with the higher cancer survival rates due to diagnostic and therapeutic advances. More than 40%of cancer patients develop brain metastases during the course of their disease: specifically, they appear in 50%of patients with lung cancer, more than 25% of patients with breast cancer, and 20% of patients with melanoma. Diagnosis is made using different imaging approaches, such as computed tomography and magnetic resonance imaging, accompanied by clinical manifestations and a history of malignancy supporting the diagnosis of a brain metastasis. Current treatment options should be oriented to the patient's current performance, the number of intracranial and extracranial lesions, and related factors. Although surgical resection and whole-brain radiotherapy have been standard treatments for many years, numerous treatment modalities have become more easily available and accepted worldwide, producing more favorable and reliable results. Among these is stereotactic radiosurgery, and the latest clinical trials support this treatment.

关键词： Brain metastases whole-brain radiation therapy stereotactic radiosurgery graded prognostic assessment

Stripe of normal mechanisms for crustal earthquakes with M ≤ 3.5 flanking the western side of the thrust front zone in the Andes backarc

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2013年第8期5卷 18-26页

作者： Silvina Nacif enrique Triep Renzo Furlani Silvana Spagnotto Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Nacional de San Luis San Luis Argentina Fondo Argentino Sectorial Agencia de Promoción Científica y Tecnológica Godoy Cruz Argentina nstituto Geofísico Sismológico F. Volponi (IGSV) Facultad de Ciencias Exactas Físicas y Naturales Universidad Nacional de San Juan San Juan Argentina

Earthquakes with magnitudes M ≤ 3.5 were registered in the Andes backarc between ~32.5°S 33.75°S within a temporary experiment from November 2002 to March 2003. Data were collected from 15 seismological broad band stations, deployed above flat subduction section and also above the transitional to normal section of the Nazca plate. Seismic events were located mostly in part of the Southern Precordillera and Cerrilladas Pedemontanas of Mendoza Province. Focal mechanism solutions were obtained, for selected data between15 kmand35 kmdepths, from P wave first motion using FOCMEC software. A band trending NW-NNW of normal focal mechanism earthquakes is located just by the thrust front towards West, and covers the Southern tip of the Southern Precordillera and the Western side of the Cerrilladas Pedemontanas, Mendoza Province, Argentina. Thrust focal mechanism solutions obtained in the present work for events with magnitude less than or equal to 3.5 also show that the thrust front South of ~33.1°S is located in the same place as Mw ≥ 3.6 earthquakes. The most significant findings in this work are these signals of extensional regimen which appear in a compressional subduction tectonic regimen. Nevertheless the short temporal experiment precludes firm interpretations about this particular phenomenon. Probably it is related to a temporary stress relaxation. The normal earthquakes are likely associated to normal faults, and/or to their subsidiaries, that were inverted by contraction and now re-inverted at least transitorily as normal. These faults, which are near and to the East of the suture between Chilenia and Cuyania Paleozoic terranes, were originally involved in the Cuyo Triassic basin formation.

关键词： Small Magnitudes Seismicity Normal Focal Mechanism Solutions Normal Fault Activation Regional Compressional Regime

Surfactant-free synthesis of metallic bismuth spheres by microwave-assisted solvothermal approach as a function of the power level

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Materials Science 2016年第4期10卷 394-404页

作者： Miriam ESTRADA FLORES Patricia SANTIAGO JACINTO Carmen M. REZA SAN GERMAN luis RENDON VAZQUEZ Raul BORJA URBY Nicolas CAYETANO CASTRO Instituto de Investigaciones en Materiales Circuito Exterior S/N Zona de Institutos Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Instituto de Fisica Circuito de la Investigaci6n Cientffica Edificio Marcos MoshinskyLaboratorio de Materiales Nanoestructurados Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Escuela Superior de Ingenierfa Qufmica e Industrias Extractivas Unidad Profesional Adolfo L6pez Mateos Edif. Z-5 2do. Piso Instituto Politecnico Nacional C.P. 07738 Mexico D.F. Mexico Centro de Nanociencias y Micro y Nanotecnologfas. Instituto Politecnico Nacional Av. Luis Enrique Erro S/NUnidad Profesional Adolfo Lopez Mateos Zacatenco Delegaci6n Gustavo A. Madero C.P. 07738 Mexico D.F. Mexico

In the present work, the synthesis of micro- and nano-sized spheres of metallic bismuth by microwave-assisted solvothermal method is reported. The synthesis method was carried out at different power levels and at a unique frequency of microwave irradiation. The sphere sizes were controlled by the microwave power level and the concentration of dissolved precursor. Structural and morphological characterization was performed by SEM, HRTEM, EELS and XRD. The results demonstrated that rhombohedral zero valent Bi spheres were synthesized after microwave radiation at 600 and 1200 W. However, if the power level is decreased to 120 W, a monoclinic phase of Bi203 is obtained with a flake-like morphology. In comparison with a conventional hydrothermal process, the microwave-assisted solvothermal approach provides many advantages such as shorter reaction time, optimum manipulation of morphologies and provides a specific chemical phase and avoids the mixture of structural phases and morphologies which is essential for further applications such as drug delivery or functionalization with organic materials, thanks to its biocompatibility.

关键词： microwave oven power level metallic bismuth spherical structures mechanism of formation electron energy loss spectroscopy (EELS)

Detection of Glucomacropeptide in Raw Milk Adulterated with Cheese Whey in Ecuador

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Food and Nutrition Sciences 2017年第6期8卷 579-590页

作者： Byron Humberto Puga-Torres Samantha Michele Morales-Arciniega luis Fabián Núnez Naranjo David Isaías De la Torre-Duque Rolando Martin Campos-Vallejo Silvana Hipatia Santander-Parra enrique César Vayas-Machado School of Veterinary Medicine and Animal Science Central University of EcuadorQuitoEcuador School of Engineering of Livestock Industries Chimborazo Polytechnic SchoolRiobambaEcuador Department of Experimental and Comparative Pathology School of Veterinary Medicine and Animal ScienceUniversity of Sao PauloSao PauloBrazil Career of Integral Agricultural Development Faculty of Agricultural Industries and Environmental SciencesCarchi Polytechnic UniversityTulcanEcuador

Milk is one of the products that can be adulterated in many ways affecting the quality of this and its derivatives. Glucomacropeptide (GMP) is a protein that is found only in the whey from the production of fresh cheese, enzymatically obtained from the coagulation of casein and which is commonly used to adulterate fresh or powdered milk. The aim of this study was to determine the adulteration of milk with cheese whey thought a molecular approach, where the glucomacropeptide was collected by sequential precipitation with trichloroacetic acid (ATC) and detected by polyacrylamidododecylsulfate gel electrophoresis (PAGE-SDS), using samples of fresh milk, intentionally adulterated with serum in the proportion of 0%, 1%, 5%, 10% and 15%. The results obtained showed that the detection of glucomacropeptide by electrophoresis was positive in all samples of adulterated milk, evidencing a band of 20.9 kDa in the reading, corresponding to the molecular weight of the GMP, showing that the technique used determines the adulteration in the milk, in a specific and sensitive way, also shows that in the evaluation of physical-chemical and microbiological parameters of milk, there are no significant differences between treatments, except for the pH that tends to decrease as the percentage of serum in the milk increases.

关键词： Glucomacropeptide Raw Milk Whey Cheese Milk Adulteration

Speckle tracking echocardiography to assess regional ventricular function in patients with apical hypertrophic cardiomyopathy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2017年第4期9卷 363-370页

作者： María Cristina Saccheri Tomás Francisco Cianciulli luis Alberto Morita Ricardo JoséMéndez Martín Alejandro Beck Juan enrique Guerra Alberto Cozzarin Luciana Jimena Puente Lorena Romina Balletti Jorge Alberto Lax Division of Cardiology Echocardiography LaboratoryHospital“Dr.Cosme Argerich” Researcher of the Ministry of Health Government of the City of Buenos AiresArgentina

AIM To explore regional systolic strain of midwall and endocardial segments using speckle tracking echocardiography in patients with apical hypertrophic cardiomyopathy(HCM).METHODS We prospectively assessed 20 patients(mean age 53 ± 16 years,range:18-81 years,10 were male),with apical HCM. We measured global longitudinal peak systolic strain(GLPSS) in the midwall and endocardium of the left ventricle. RESULTS The diastolic thickness of the 4 apical segments was 16.25 ± 2.75 mm. All patients had a normal global systolicfunction with a fractional shortening of 50% ± 8%. In spite of supernormal left ventricular(LV) systolic function,midwall GLPSS was decreased in all patients,more in the apical(-7.3% ±-8.8%) than in basal segments(-15.5% ±-6.93%),while endocardial GLPPS was significantly greater and reached normal values(apical:-22.8% ±-7.8%,basal:-17.9% ±-7.5%). CONCLUSION This study shows that two-dimensional strain was decreased mainly confined to the mesocardium,while endocardium myocardial deformation was preserved in HCM and allowed to identify subclinical LV dysfunction. This transmural heterogeneity in systolic strain had not been previously described in HCM and could be explained by the distribution of myofibrillar disarray in deep myocardial areas. The clinical application of this novel finding may help further understanding of the pathophysiology of HCM.

关键词：顶端的 hypertrophic 心肌症二维的紧张追踪的点缀心内膜 Midwall 地区性的心肌的收缩功能

Risk perception and knowledge of COVID-19 in patients with celiac disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2021年第12期27卷 1213-1225页

作者： Jamie Zhen Juan Pablo Stefanolo María de la Paz Temprano Caroline L Seiler Alberto Caminero enrique de-Madaria Miguel Montoro Huguet Vivas Santiago Sonia Isabel Niveloni Edgardo Gustavo Smecuol luis Uzcanga Dominguez Elena Trucco Virginia Lopez Carolina Olano Pasquale Mansueto Antonio Carroccio Peter H Green Donald Duerksen Andrew S Day Jason A Tye-Din Julio César Bai Carolina Ciacci Elena F Verdú Benjamin Lebwohl M Ines Pinto-Sanchez Department of Medicine Farncombe Family Digestive Health Research InstituteMcMaster University Medical CenterHamilton Health SciencesHamilton L8S4K1ONCanada Department of Medicine Dr.C.Bonorino Udaondo Gastroenterology HospitalBuenos Aires 1264Argentina Department of Pancreatic Unit Hospital General Universitario de AlicanteAlicante 03010Spain Department of Medicine Instituto Aragonés de Ciencias de la Salud(IACS)Zaragoza 50009Spain Department of Medicine Hospital Universitario San Jorge.HuescaZaragoza 50004Spain Department of Gastroenterology Univ Hosp LeonGastroenterol UnitAltos de Nava S-NLeon 24071Spain Department of Medicine Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico DF 14080Mexico Department of Medicine Universidad de la RepublicMontevideo 11800Uruguay Department of Internal Medicine PROMISE DepartmentUniversity of PalermoPalermo 90127Italy Department of Internal Medicine V.Cervello HospitalPROMISE DepartmentUniversity of PalermoPalermo 90127Italy Celiac Disease Center Columbia University Medical CenterColumbia UnivCeliac Dis CtrDiv Digest and Liver DisNew YorkNY 10032United States Department of Medicine St Boniface Gen HospUniversity of ManitobaWinnipeg R2H 2A6Canada Department of Paediatrics University of Otago ChristchurchChristchurch 8041New Zealand Department of Gastroenterology Royal Melbourne HospitalImmunology DivisionWalter and Eliza Hall InstituteMelbourne 3052Australia Department of Medicine Surgery and DentryScuola Medica SalernitanaUniversity of SalernoCeliac Center at the University Hospital San Giovanni di Dio e Ruggi di AragonaSalerno 84131Italy Department of Medicine Farncombe Family Digestive Research InstituteMcMaster UniversityHamilton L8S4K1ONCanada The Celiac Disease Center Columbia UniversityNew YorkNY 10032United States

BACKGROUND We recently demonstrated that the odds of contracting coronavirus disease 2019(COVID-19)in patients with celiac disease(CeD)is similar to that of the general ***,how patients with CeD perceive their COVID-19 risk may differ from their actual *** To investigate risk perceptions of contracting COVID-19 in patients with CeD and determine the factors that may influence their *** We distributed a survey throughout 10 countries between March and June 2020 and collected data on demographics,diet,COVID-19 testing,and risk perceptions of COVID-19 in patients with *** were recruited through various celiac associations,clinic visits,and social *** perception was assessed by asking individuals whether they believe patients with CeD are at an increased risk of contracting COVID-19 when compared to the general *** regression was used to determine the influencing factors associated with COVID-19 risk perception,such as age,sex,adherence to a gluten-free diet(GFD),and comorbidities such as cardiac conditions,respiratory conditions,and *** was presented as adjusted odds ratios(aORs)RESULTS A total of 10737 participants with CeD completed the *** them,6019(56.1%)patients with CeD perceived they were at a higher risk or were unsure if they were at a higher risk of contracting COVID-19 compared to the non-CeD population.A greater proportion of patients with CeD perceived an increased risk of contracting COVID-19 when compared to infections in general due to their CeD(56.1%vs 26.7%,P<0.0001).Consequently,34.8%reported taking extra COVID-19 precautions as a result of their *** of celiac associations were less likely to perceive an increased risk of COVID-19 when compared to non-members(49.5%vs 57.4%,P<0.0001).Older age(aOR:0.99;95%CI:0.99 to 0.99,P<0.001),male sex(aOR:0.84;95%CI:0.76 to 0.93,P=0.001),and strict adherence to a GFD(aOR:0.89;95%CI:0.82 to 0.96,P=0.007)were associated

关键词： Celiac disease Gluten Risk Infection Knowledge Perception Coronavirus COVID-19