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DISCUSSION ON “NUMERICAL SIMULATION OF SEDIMENT RELEASE FROM RESERVOIRS” (No. 1,2006) BY KHOSROWNEJAD A. AND NEISHABORI A.

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International Journal of Sediment Research 2007年第1期22卷 80-86页

作者： Horacio TONIOLO Alfredo TRENTO Civil and Environmental Engineering Department University of Alaska Fairbanks facultad de Ingenieria y ciencias Hidricas Universidad Nacional del Litoral

Sedimentation processes in reservoirs can be studied by performing theoretical analysis, laboratory experimentation, numerical simulation, or a combination of these three methods. Available literature focused on reservoirs is abundant. For instance, the works conducted by Hotchkiss and Parker (1991), Morris and Fan (1997), and De Cesare et al.

关键词： AND NEISHABORI A BY KHOSROWNEJAD A DISCUSSION ON NUMERICAL SIMULATION OF SEDIMENT RELEASE FROM RESERVOIRS No

Palaeogeographic reconstruction of Minchin palaeolake system,South America: The influence of astronomical forcing

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Geoscience Frontiers 2014年第2期5卷 249-259页

作者： Andrea Sánchez-Saldías Richard A.Faria Universidad de la República Facultad de Ciencias Departamento de Astronomía Universidad de la República Facultad de Ciencias Laboratorio de Paleobiología

Current palaeoclimatic reconstructions for the R＆#237;o de la Plata region during the latest Pleistocene （30,000 e10,000 yr BP） propose dry conditions, with rainfall at the Last Glacial Maximum amounting to one-third of today＇s precipitation. Despite the consequential low primary productivity inferred, an impressive megafauna existed in the area at that time. Here we explore the influence of the flooding from a huge extinct system of water bodies in the Andean Altiplano as a likely source for wet regimes that might have increased the primary productivity and, hence, the vast number of megaherbivores. The system was reconstructed using specifically combined software resources, including Insola, Global Mapper v13, Surfer and Matlab. Changes in water volume and area covered were related to climatic change, assessed through a model of astronomical forcing that describes the changes in insolation at the top of the at-mosphere in the last 50,000 yr BP. The model was validated by comparing its results with several proxies （CH4, CO2, D, 18O） from dated cores taken from the ice covering Antarctic lakes Vostok and EPICA Dome C. It is concluded that the Altiplano Lake system drained towards the southeast in the rainy seasons and that it must have been a major source of water for the Paran＆#225;-Plata Basin, consequently enhancing primary productivity within it.

关键词： Planetary science Climate science Quaternary Palaeoecology Megafauna Parana Basin

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Algorithms for Computing Some Invariants for Discrete Knots

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Applied Mathematics 2013年第11期4卷 1526-1530页

作者： Gabriela Hinojosa David Torres Rogelio Valdez facultad de ciencias Universidad Autónoma del Estado de Morelos Cuernavaca México

Given a cubic knot K, there exists a projection? of the Euclidean space R3?onto a suitable plane ?such that p(K) is a knot diagram and it can be described in a discrete way as a cycle permutation. Using this fact, we develop an algorithm for computing some invariants for K: its fundamental group, the genus of its Seifert surface and its Jones polynomial.

关键词： Cubic Knots Discrete Knots Algorithms

Performance of Phragmites Australis and Cyperus Papyrus in the treatment of municipal wastewater by vertical flow subsurface constructed wetlands

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International Soil and Water Conservation Research 2019年第3期7卷 286-296页

作者： Fernando García-(A)vila Jhanina Pati(n)o-Chávez Fanny Zhinín-Chimbo Silvana Donoso-Moscoso Lisveth Flores del Pino Alex Avilés-A(n)azco facultad de ciencias Químicas Universidad de CuencaCuenca010107Ecuador facultad de ciencias Universidad Nacional Agraria La MolinaLima12175Peru

The use of constructed wetlands to treat municipal wastewater reduces energy consumption and therefore economic costs,as well as reduces environmental *** purpose of this study was to compare the purification capacity of domestic wastewater using two species of plants sown in subsurface constructed wetlands with vertical flow built on a small scale that received municipal wastewater with primary *** species used were Phragmites Australis and Cyperus *** this purpose,a constant flow of 0.6 m3 day-1 was fed from the primary lagoon to each of the two wetlands built on a pilot scale with continuous *** unit was filled with granite gravel in the lower part and with silicic sand in the upper part of different granulometry,the porosity of the medium was 0.34,with a retention time of 1.12 days and a hydraulic load rate of 0.2 m *** analyze the purification capacity of wastewater,physical,chemical and biological parameters were monitored during three *** were taken at the entrance and exit in each experimental *** results obtained in the experimental tests for the two species of plants,indicated that the Cyperus Papyrus presented a greater capacity of pollutants removal as biochemical oxygen demand (80.69%),chemical oxygen demand (69.87%),ammoniacal nitrogen (69.69%),total phosphorus (50%),total coliforms (98.08%) and fecal coliforms (95.61%).In the case of Phragmites Australis retains more *** species with greater efficiency in the treatment of municipal wastewater for this study was Cyperus Papyrus.

关键词： Constructed wetland Fitorremediacion Macrophytes Nutrients Wastewater treatment

Morphological responses of three persistent native anuran species after forest conversion into monoculture pine plantations:tolerance or prosperity?

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Integrative Zoology 2020年第5期15卷 428-440页

作者： Elena GANGENOVA Mariano IGIOMBINI Gustavo AZURITA Federico MARANGONI Instituto de Biología Subtropical Universidad Nacional de Misiones–CONICETPuerto IguazúMisionesArgentina facultad de ciencias Forestales Universidad Nacional de MisionesEldoradoMisionesArgentina Departamento de Biología Facultad de Ciencias ExactasNaturales y AgrimensuraUniversidad Nacional del Nordeste(UNNE)CorrientesArgentina

Species loss by habitat replacement operating as an ecological filter is a well-known consequence of modern human activities. In contrast, the ecological and evolutionary response of species overcoming those filters in convertedhabitats has not been thoroughly explored. Species that persist are subject to novel and potentially stressful conditions that may induce certain morphological changes. We evaluated changes in the functional morphology of threeanuran species persisting after the conversion of areas of the Atlantic Forest into pine plantations. We specificallyevaluated differences in body size and body condition indices, head width, and hind legs’ length between adultindividuals from both habitats and sexes. Habitat conversion and sexual dimorphism affected the morphology ofthe three anurans, with varying effects upon species and traits. Regarding the effect of habitat conversion, Elachistocleis bicolor increased body condition in plantations with no changes in the other traits, Physalaemus cuvierishowed only a marginal increment in residual body mass in plantations, and Odontophrynus americanus exhibiteda substantial increment in body size while maintaining its body condition in plantations. Remarkably, none of theresults suggested these persistent anurans were stressed by forest conversion. This study shows that habitat conversion may induce intraspecific morphological changes in ecologically relevant traits of persistent species, andthat disturbed areas do not necessarily imply stressful, low quality habitats affecting all persistent native speciesnegatively.

关键词： amphibian Atlantic forest body condition functional morphology habitat replacement phenotypic plasticity

Breaking paradigms: Long non-coding RNAs forming gene fusions with potential implications in cancer

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Genes & Diseases 2024年第3期11卷 311-323页

作者： David Sanchez-Marin Macrina Beatriz Silva-Cazares Fany Iris Porras-Reyes Rebeca Garcia-Roman Alma D.Campos-Parra Posgrado en ciencias Biologicas Facultad de MedicinaUniversidad Nacional Autonoma de MexicoCiudad de MexicoC.P.04360Mexico Unidad Academica Multidisciplinaria Region Altiplano Universidad Autonoma de San Luis Potost(UASLP)Carretera a Cedral Km 5+600Ejido San Jose de la TrojesMatehualaSan Luis PotosiC.P.78760Mexico Servicio de Anatomia Patologica Instituto Nacional de Cancerologia(INCan)Nino JesuisTlalpanCiudaddeMexicoC.P.14080Mexico Instituto de Salud Publica Universidad Veracruzana(UV)Av.Dr LuisDr.Castelazo Ayala s/nCol.Industrial AnimasXalapaVeracruzC.P.91190Mexico

Long non-coding RNAs(lncRNAs)are non-coding RNAs longer than 200 nucleotides with dynamic regulatory *** interact with a wide range of molecules such as DNA,RNA,and proteins to modulate diverse cellular functions through several mechanisms and,if deregulated,they can lead to cancer development and ***,it has been described that IncRNAs are susceptible to form gene fusions with mRNAs or other IncRNAs,breaking the paradigm of gene fusions consisting mainly of protein-coding ***,their biological significance in the tumor phenotype is still ***,their recent identification opens a new line of research to study their biological role in tumor-igenesis,and their potential as biomarkers with clinical relevance or as therapeutic *** present study aimed to review the IncRNA fusions identified so far and to know which of them have been associated with a potential *** address the current challenges to deepen their study as well as the reasons why they represent a future therapeutic window incancer.

关键词： Cancer Genefusions IncRNAs ncRNAs Therapy

Drought and Spatiotemporal Variability of Forest Fires Across Mexico

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Chinese Geographical Science 2018年第1期28卷 25-37页

作者： Pompa-García MARíN Camarero J.JULIO Rodríguez-Trejo DANTE ARTURO Vega-Nieva DANIEL JOSE facultad de ciencias Forestales Universidad Juarez del Estado de Durango Durango 34120 MExico Instituto Pirenaico de Ecologia IPE-CSIC 50059 Spain Divisian de ciencias Forestales Universidad Autonoma Chapingo Chapingo 56230 MExico

Understanding the spatiotemporal links between drought and forest fire occurrence is crucial for improving decision-making in fire management under current and future climatic conditions. We quantified forest fire activity in Mexico using georeferenced fire records for the period of 2005–2015 and examined its spatial and temporal relationships with a multiscalar drought index, the Standardized Precipitation-Evapotranspiration Index(SPEI). A total of 47975 fire counts were recorded in the 11-year long study period, with the peak in fire frequency occurring in 2011. We identified four fire clusters, i.e., regions where there is a high density of fire records in Mexico using the Getis-Ord G spatial statistic. Then, we examined fire frequency data in the clustered regions and assessed how fire activity related to the SPEI for the entire study period and also for the year 2011. Associations between the SPEI and fire frequency varied across Mexico and fire-SPEI relationships also varied across the months of major fire occurrence and related SPEI temporal scales. In particular, in the two fire clusters located in northern Mexico(Chihuahua, northern Baja California), drier conditions over the previous 5 months triggered fire occurrence. In contrast, we did not observe a significant relationship between drought severity and fire frequency in the central Mexico cluster, which exhibited the highest fire frequency. We also found moderate fire-drought associations in the cluster situated in the tropical southern Chiapas where agriculture activities are the main causes of forest fire occurrence. These results are useful for improving our understanding of the spatiotemporal patterns of fire occurrence as related to drought severity in megadiverse countries hosting many forest types as Mexico.

关键词： cluster drought forest fires geostatistics spatial clusters Standardised Precipitation-Evapotranspiration Index (SPEI)

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增材制造Ti6Al4V合金的闪速等离子体电解氧化与在生理介质中的电化学行为

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Transactions of Nonferrous Metals Society of China 2024年第4期34卷 1150-1166页

作者： H.MORA-SANCHEZ C.RAMOS M.MOHEDANO B.TORRES R.ARRABAL E.MATYKINA Departamento de Ingeniería Química y de Materiales Facultad de Ciencias QuímicasUniversidad Complutense de Madrid28040 MadridSpain CIDETEC Basque Research and Technology Alliance(BRTA)Po.Miramón 19620014 Donostia-San SebastiánSpain Departamento Matemática Aplicada Ciencia e Ingeniería de Materiales y Tecnología ElectrónicaUniversidad Rey Juan CarlosC/Tulipán s/nMóstoles 28933MadridSpain

研究激光粉末床熔融增材制造(AM)(又称直接金属激光烧结)技术制备的Ti6Al4V合金等离子体电解氧化(PEO)处理及其电化学行为。通过短时间(<120 s)PEO处理(也称闪速PEO),在AM合金和传统合金表面制备了3~10μm厚、含Ca和P的涂层。然后在改... 详细信息

研究激光粉末床熔融增材制造(AM)(又称直接金属激光烧结)技术制备的Ti6Al4V合金等离子体电解氧化(PEO)处理及其电化学行为。通过短时间(<120 s)PEO处理(也称闪速PEO),在AM合金和传统合金表面制备了3~10μm厚、含Ca和P的涂层。然后在改良的α-MEM溶液中,通过动电位极化曲线和电化学阻抗谱(EIS)评估了合金的电化学行为。与传统合金相比,AM合金中形成了细小的层片状α显微组织和层间小尺寸的β相颗粒,这促使了火花的产生,从而促进了PEO涂层的生长。闪速PEO涂层提高了传统合金和AM合金的耐腐蚀性,最薄的涂层(<3μm)提供了高达3倍的保护。AM Ti6Al4V由于其高的晶界密度,易受局部缝隙腐蚀的影响。而即使短至35 s的闪速PEO处理也足以成功避免这种情况。

关键词：增材制造激光粉末床熔融等离子体电解氧化闪速PEO 钛缝隙腐蚀 α-MEM

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Beyond habitat structure: Landscape heterogeneity explains the monito del monte (Dromiciops gliroides) occurrence and behavior at habitats dominated by exotic trees

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Integrative Zoology 2016年第5期11卷 413-421页

作者： Daniela A.SALAZAR Francisco E.FONTÚRBEL Departamento de ciencias Ecológicas Facultad de CienciasUniversidad de ChileSantiagoChile Instituto de Biología Facultad de CienciasPontificia Universidad Católica de ValparaísoValparaísoChile

Habitat structure determines species occurrence and ***,human activities are altering natural habitat structure,potentially hampering native species due to the loss of nesting cavities,shelter or movement *** South American temperate rainforest is experiencing an accelerated loss and degradation,compromising the persistence of many native species,and particularly of the monito del monte(Dromiciops gliroides Thomas,1894),an arboreal marsupial that plays a key role as seed *** to compare 2 contrasting habitats(a native forest and a transformed habitat composed of abandoned Eucalyptus plantations and native understory vegetation),we assessed ***’occurrence using camera traps and measured several structural features(*** and bamboo cover,deadwood presence,moss abundance)at 100 camera ***plementarily,we used radio telemetry to assess its spatial ecology,aiming to depict a more complete *** abundance was the only significant variable explaining *** occurrence between habitats,and no structural variable explained its occurrence at the transformed *** were no differences in home range,core area or inter-individual *** the transformed habitats,tracked individuals used native and Eucalyptus-associated vegetation types according to their *** locations(and,hence,nesting sites)were located exclusively in native *** landscape heterogeneity resulting from the vicinity of native and Eucalyptus-associated vegetation likely explains *** occurrence better than the habitat structure itself,as it may be use Eucalyptus-associated vegetation for feeding purposes but depend on native vegetation for nesting.

关键词： behavior fleshy fruits southern Chile spatial ecology temperate rainforest