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Tropical tree community composition and diversity variation along a volcanic elevation gradient

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Journal of Mountain Science 2022年第12期19卷 3475-3486页

作者： Ruben MARTINEZ-camilo Manuel MARTINEZ-MELENDEZ Nayely MARTINEZ-MIELENDEZ Derio Antonio JIMENEZ-LOPEZ Mauricio JOSE-RIOS Unidad Villa Corzo Facultad de IngenieríaUniversidad de Ciencias y Artes de Chiapas30520 Villa CorzoChiapasMexico Instituto de Ciencias Biológicas Universidad de Ciencias y Artes de Chiapas29039 Tuxtla GutiérrezChiapasMexico Eizia A.C. 29045 Tuxtla GutiérrezChiapasMexico Departamento de Conservación de la Biodiversidad El Colegio de la Frontera Sur29290 San Cristóbal de las CasasChiapasMexico Orquidiario y Jardín Botánico de Comitán Secretaría de Medio Ambiente e Historia Natural30106 Comitán de DomínguezChiapasMexico Instituto de Investigación en Gestión de Riesgos y Cambio Climático Universidad de Ciencias y Artes de Chiapas29039 Tuxtla GutiérrezChiapasMexico

Unraveling the factors that determine variation of diversity in tropical mountain systems is a topic for debate in plant *** is especially true in areas where topography is complex due to volcano elevational gradients and where forests are vulnerable to human *** this study we used a set of climatic(temperature,rainfall,and radiation solar),topographic(elevation,slope aspect,and slope orientation)and human disturbance variables to determine their effect on diversity and composition patterns of a tree community,considering three slope aspects of a tropical volcano in southeastern *** sampled trees in seventy 0.1-ha plots distributed on three slope aspects of the Tacanávolcano along an elevational gradient of 1500 to 2500 *** determined diversity patterns(general tree richness,exponential of Shannon index,and pioneer species richness)with linear regression models,and for beta diversity,we used a dissimilarity index(within and between elevational bands 100 m wide).The effect of a set of environmental and human disturbance variables on tree diversity and community composition was analyzed with general linear models and multivariate analyses,*** registered 2,949 individual trees belonging to 176 species and *** average species richness and alpha diversity per plot were 13(standard deviation±6)and 9(±5),*** tree richness and alpha diversity increased in the middle part(unimodal patterns)of the elevational gradient,but pioneer species richness decreased linearly with *** variance explained by general linear models was greater in richness(32%)than in alpha diversity(25.3%).The most important predictor variables were temperature(elevational gradient),which explained the unimodal pattern(richness and alpha diversity increase at intermediate levels of temperature),and slope orientation,which explained the increase in richness and alpha diversity toward the geographic *** temperature had a signific

关键词： Composition Environmental gradient Tree diversity patterns Tropical humid cloud forest Tropical volcanoes

A geomorphological model of susceptibility to the effect of human interventions for environmental licensing determination(SHIELD)

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Geoscience Frontiers 2022年第2期13卷 284-294页

作者： Cristina I.Pereira Celene B.Milanes Ivan Correa Enzo Pranzini Benjamin Cuker camilo M.Botero EAFIT University Earth Sciences DepartmentMedellínColombia Coastal Systems Research Group Playas Corporation Ltda.BogotáColombia Civil and Environmental Department Universidad De La CostaBarranquillaColombia Department of Earth Sciences University of FlorenceFirenzeItaly Department of Marine and Environmental Science Hampton UniversityHamptonUnited States University Sergio Arboleda School of LawSanta

Almost every country requires some form of environmental licensing prior to the inception of development projects that may affect the integrity of the environment and its social *** developed a new conceptual and methodological model to instruct the assessment of the potential impacts posed by proposed *** to Human Interventions for Environmental Licensing Determination(SHIELD)includes a novel geomorphological interpretation of the Environmental Impact Assessment(EIA).It considers the impact of human interventions on geomorphological processes and landscape functioning in the context of the entire ecosystem,going further than the classical concept of *** susceptibility of the site informs the screening stage,allowing local conditions to help define the criteria used in the ***,the level of detail of the environmental baseline is scoped by considering the degree of disturbance of natural processes posed by human *** this geomorphological susceptibility model on different kinds of environments would allow shifting the environmental licensing practices from the prevailing anthropocentric and static conception of the environment towards an Ecosystem *** addresses the need to improve the screening and scoping stages that form the basis of the rest of any *** introduces several innovations to EIA including the incorporation of fuzzy logic,a preassembled database of contributions form experts,and a shifting of emphasis from the type of proposed intervention to the type of environment and its relative susceptibility.

关键词： Processes and landforms Expert knowledge Ecosystem approach Screening Scoping

Kinetics and mechanisms of the catalytic thermal cracking of asphaltenes adsorbed on supported nanoparticles

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Petroleum Science 2016年第3期13卷 561-571页

作者： Tatiana Montoya Blanca L.Argel Nashaat N.Nassar camilo A.Franco Farid B.Cortés Department of Chemical and Petroleum Engineering University of Calgary 2500 University Drive NW CalgaryAB Canada Grupo de Investigacion Fenomenos de Superficie-Michael Polanyi Facultad de Minas Universidad Nacional de Colombia Sede Medellin Medellin Colombia Grupo de Investigacion en Yacimientos de Hidrocarburos Facultad de Minas Universidad Nacional de Colombia Sede Medellfn Kra 80 No. 65-223 Medellfn Colombia

The production of heavy and extra-heavy oil is challenging because of the rheological properties that crude oil presents due to its high asphaltene *** upgrading and recovery processes of these unconventional oils are typically water and energy intensive,which makes such processes costly and environmentally *** catalysts could be used to enhance the upgrading and recovery of heavy oil under both in situ and ex situ *** this study,the effect of the Ni-Pd nanocatalysts supported on fumed silica nanoparticles on post-adsorption catalytic thermal cracking of n-C_7 asphaltenes was investigated using a thermogravimetric analyzer coupled with *** performance of catalytic thermal cracking of n-C_7asphaltenes in the presence of NiO and PdO supported on fumed silica nanoparticles was better than on the fumed silica support *** a fixed amount of adsorbed n-C_7asphaltenes（0.2 mg/m～2）,bimetallic nanoparticles showed better catalytic behavior than monometallic nanoparticles,confirming their synergistic *** corrected OzawaFlynn-Wall equation（OFW） was used to estimate the effective activation energies of the catalytic *** mechanism function,kinetic parameters,and transition state thermodynamic functions for the thermal cracking process of n-C_7 asphaltenes in the presence and absence of nanoparticles are investigated.

关键词： Catalytic thermal cracking Adsorption Nanoparticles SHS n-C7 asphaltene

Relationship between the Vitória-Ecoporanga Dyke Swarm and the Vitória Structural High,Brazil

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Acta Geologica Sinica(English Edition) 2016年第S1期90卷 145-150页

作者： camilo I.Ordónez ARISTIZABAL Andre Luiz FERRARI NACAD/COPPE/UFRJ Centro de Tecnologia-Bloco H(anexo)Av.Athos da Silveira Ramos 149 Cidade UniversitáriaRio de Janeiro Universidade Federal Fluminense/LAGEMAR Departamento de Geologia Universidade Federal Fluminense Av.Gen.Milton Tavares de Souza s.n.

In Espírito Santo State,Brazil,between the municipalities of Vitória,Colatina and Ecoporanga,there is a mountainous region characterized by a shear zone which trends NNW-SSE and is filled by a diabase

关键词： ria-Ecoporanga Dyke Swarm and the Vit Brazil ria Structural High

Aristotle＇s Definition of Physis in Physics B 1

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Journal of Philosophy Study 2013年第12期3卷 1088-1093页

作者： camilo Vega Gonzalez University of Antioquia

In Physics B 1, Aristotle establishes a detailed definition ofphysis. For that purpose, Aristotle distinguishes physis from rechne and his domain. He did this to offer a satisfactory account of the physical being. In this process, phf;sis is defined as an immanent principle of movement and as matter and as form. As matter physis could be understood as ＂the primary underlying matter in each case, of things which have in themselves a source of their movements and changes＂. To consider physis as form Aristotle appeals to four arguments where priority of form over matter appears to be evident and where the identifying of eidos/morphe with to telos/to hou heneka will be crucial, especially for later developments. The reconstruction of Aristotle＇s reasoning on his definition ofphysis in Physics B 1 emphasizing the problems that such effort of definition implies is the purpose of this paper.

关键词： physis techne hyle eidos/morphe to telos/to hou heneka

小麦内生细菌在不同器官和生长阶段的多样性及作为生物肥料潜力的研究

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小麦内生细菌在不同器官和生长阶段的多样性及作为生物肥料潜力的...

Cultural differences defne diagnosis and genomic medicine practice: implications for undiagnosed diseases program in China

中国植物病理学会2019年学术年会

作者：庞发虎 camilo ayra-pard. 王坦余自伟黄思良南阳师范学院农业工程学院

内生细菌在提高寄主植物的环境适应能力、抗逆性和产量方面发挥着不可或缺的作用。虽然从小麦或其他植物的特定部位分离内生细菌并用于生物防治有所研究,但目前关于内生细菌在不同植物器官和生长阶段中作为生物肥料的潜在分布和生物多... 详细信息

内生细菌在提高寄主植物的环境适应能力、抗逆性和产量方面发挥着不可或缺的作用。虽然从小麦或其他植物的特定部位分离内生细菌并用于生物防治有所研究,但目前关于内生细菌在不同植物器官和生长阶段中作为生物肥料的潜在分布和生物多样性还鲜有报道。本研究于2012—2013年,在小麦的不同生长阶段,从小麦植株的不同器官（根、茎、叶和种子）中共分离出127株内生细菌。通过对菌株的形态、生化特征和16S rDNA序列分析,将其鉴定为10个属,14个特定种和8个未确定种。香农多样性指数和辛普森多样性指数表明,根是内生细菌群落最为丰富的器官,其次是茎、叶和种子。随着小麦的生长发育,从分蘖期到种子灌浆期分离出的内生细菌属的数量不断增加,但有些属具有器官特异性,只能在小麦的特定生长阶段被分离出来。从分离频率来看,蜡样芽孢杆菌（Bacillus cereus）和枯草芽孢杆菌（***）是优势种群。嗜麦芽窄食单胞菌（Stenotrophomonas maltophilia）和葡萄球菌（Staphylococcus sp.）被鉴定为小麦新的内生细菌。在促生方面,分别有45%、29%和37%的菌株产吲哚-3-乙酸和溶无机磷和有机磷。用内生细菌接种生长在贫瘠土壤中的小麦植株,与未接种的对照组相比,内生细菌可使小麦根系干重、地上部分干重和株高分别增加到1.9%～61.3%（平均27.7%）、1.6%～54.2%（平均28.5%）和0.3%～54.9%（平均22.3%）。研究结果揭示了内生细菌类群在小麦各器官和生长阶段中的分布的多样性,其中根系是主要的分布器官,是筛选内生细菌促进小麦生长的首选组织。

关键词：分离频率种群多样性促生内生细菌

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Frontiers of Medicine 2013年第3期7卷 389-394页

作者： Xiaohong Duan Thomas Markello David Adams camilo Toro Cynthia Tifft William A. Gahl Cornelius F. Boerkoel Department of Oral Biology Clinic of Oral Rare Diseases and Genetic Diseases School of Stomatology the Fourth Military Medical University NIH Undiagnosed Diseases Program NIH Offce of Rare Diseases Research and NHGRI

Despite the current acceleration and increasing leadership of Chinese genetics research,genetics and its clinical application have largely been imported to China from the *** genetics nor the scientifc reductionism underpinning its clinical application is integral to the traditional Chinese *** that disease concepts and their incumbent diagnoses are historically derived and culturally meaningful,we hypothesize that the cultural expectations of genetic diagnoses and medical genetics practice differ between the Occident and ***,we suggest that an undiagnosed diseases program in China will differ from the recently established Undiagnosed Diseases Program at the United States National Institutes of Health;a culturally sensitive concept will integrate traditional Chinese understanding of disease with the scientifc reductionism of Occidental medicine.

关键词： genetics cultural differences undiagnosed diseases program

Mid-term results of patterned laser trabeculoplasty for uncontrolled ocular hypertension and primary open angle glaucoma

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International Journal of Ophthalmology(English edition) 2021年第8期14卷 1199-1204页

作者： Gustavo Espinoza Yuly Andrea Castellanos-Castellanos Angelica Pedraza-Concha Ignacio Rodriguez-Una Maria Fernanda Acuna Juan camilo Parra Centro Oftalmologico Virgilio Galvis BucaramangaSantander 681004Colombia Fundacion Oftalmologica de Santander BucaramangaSantander 681004Colombia Universidad Industrial de Santander BucaramangaSantander 680002Colombia Instituto Oftalmologico Fernandez-Vega Universidad de OviedoOviedo 33012Spain

AIM:To describe the safety and efficacy of patterned laser trabeculoplasty(PLT)as an adjunctive treatment in primary open angle glaucoma(POAG)and ocular hypertension(OHT)after 18-month follow-up in Hispanic ***:A single-center,retrospective study was *** patients with OHT or POAG undergoing PLT from June 2016 to August 2016 were included in the *** parameters were intraocular pressure(IOP),the number of IOP-lowering medications,best corrected visual acuity(BCVA),laser parameters and postoperative adverse *** efficacy outcome measures were the proportion of eyes achieving an IOP reduction≥20%at 18 mo versus baseline medicated IOP or a reduction in the number of medications while maintaining IOP ***:From 40 PLT-treated eyes(mean baseline IOP 20.3±1.7 mm Hg),24 patients were analyzed(age 63.4±7.3 y).The mean IOP reductions from baseline across visits(months 1,3,6,9,12,and 18)ranged from 14.1%to 20.8%.Success rate after 18-month follow-up was 61.7%with a mean IOP of 16±3.2 mm Hg(P<0.001).The number of glaucoma IOP-lowering medications per eye(preoperative 2.1±1.1 and postoperative 2.3±1.1,P=0.86)and the mean BCVA(preoperative 0.10±0.22 and postoperative 0.11±0.22 logMAR,P=0.42)remained *** events comprised transitory IOP spikes in 4 eyes(10%)and peripheral anterior synechiae in 7 eyes(17.5%).CONCLUSION:Mid-term results of PLT show that this procedure may be an efficacious and safe technique to approach medically uncontrolled OHT or POAG patients.

关键词： glaucoma intraocular pressure ocular hypertension patterned laser trabeculoplasty

Flow behavior and fracture of Al−Mg−Si alloy at cryogenic temperatures

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Transactions of Nonferrous Metals Society of China 2021年第3期31卷 595-608页

作者： Danielle Cristina camilo MAGALHAES Andrea Madeira KLIAUGA Vitor Luiz SORDI Department of Materials Engineering Federal University of Sao Carlos−UFSCarRod.Washington Luizkm 23513565-905Sao Carlos–SPBrazil

The tensile and fracture behaviors of AA6061 alloy were investigated in order to provide quantitative data about this alloy at cryogenic *** of AA6061 alloy were solution heat treated before tensile tests at 298,173 and 77 K and tested at strain rates in the range from 0.1 to 0.0001 s^(−1).The results indicate the suppression of the Portevin−Le Chatelier(PLC)effect and dynamic strain aging(DSA)at 77 *** contrast,at 298 K,a remarkable serrated flow,characteristic of the PLC effect,is ***,the tensile behavior at 77 K,compared with that observed at 173 and 298 K,shows a simultaneous increase in strength,uniform elongation,modulus of toughness,strain-hardening exponent and strain rate sensitivity,which is related to a decrease in the dynamic recovery rate at low *** responses are reflected on the fracture morphology,since the dimple size decreases at 77 K,while the area covered by dimples *** of the Johnson−Cook model show that a good agreement can be obtained for tests at 173 and 77 K,in which DSA is suppressed.

关键词： cryogenic temperature aluminum alloy flow behavior strain rate sensitivity work-hardening behavior Johnson−Cook model fracture