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| 1 | Land cover change and carbon stores in a tropical montane cloud forest in the Sierra Madre Oriental,Mexico显示文摘Tropical montane cloud forest is one of the ecosystems with the highest biomass worldwide, representing an important carbon store. Globally its deforestation index is –1.1%, but in Mexico it is higher than –3%. Carbon estimates are scarce globally, particularly in Mexico. The objective of this study was to simulate future land-cover scenarios for the Sierra Madre Oriental in Mexico, by analyzing past forest cover changes. Another objective was to estimate stored carbon in the two study areas. These objectives involve the generation of information that could be useful inputs to anti-deforestation public policy such as the REDD+ strategy. Remote sensing was used to measure land cover change and estimate carbon stocks. Satellite images from 2015, 2000 and 1986 were used, and Dinamica EGO freeware generatedmodels of future projections. Between 1986 and 2015, 5171 ha of forest were converted to pasture. The annual deforestation rates were –1.5% for Tlanchinol and –1.3% for the San Bartolo Tutotepec sites. Distance to roads and marginalization were highly correlated with deforestation. By 2030, an estimated 3608 ha of forest in these sites will have been converted to pasture. Stored carbon was estimated at 16.35 Mg C ha-1 for the Tlanchinol site and 12.7 Mg C ha-1 for the San Bartolo site. In the Sierra Madre Oriental deforestation due to land cover change(–1.4%) is higher than levels reported worldwide. Besides having high values of stored carbon(14.5 Mg C ha-1), these forests have high biodiversity. The models' outputs show that the deforestation process will continue if action is not taken to avoid the expansion of livestock pasturing. This can be done by paying incentives for forest conservation to the owners of the land. The results suggest that REDD+ is currently the most viable strategy for reducing deforestation rates in tropical montane cloud forests in Sierra Madre Oriental. | Edgar G.LEIJA-LOREDO Numa P.PAVóN Arturo SáNCHEZ-GONZáLEZ Rodrigo RODRIGUEZ-LAGUNA GregorioáNGELES-PéREZ | 2018 | Journal of Mountain Science2018，15，10： | 2 |
| 2 | Relationship between vegetation structure and microenvironment in Fagus grandifolia subsp.mexicana forest relicts in Mexico显示文摘Aims Changes in the structure and composition of forests,whether caused by natural or anthropic events,alter the microenviron-ment,sometimes irreversibly.Since the local environment has a direct impact on basic ecological processes,this has become a key component of research.Mexican beech forests(Fagus grandi-folia subsp.mexicana)in the Sierra Madre Oriental are restricted to sites with specific climate,soils and topography,making them an ideal natural system for ecological research.The objectives of this study were to identify the relationship between the microen-vironment and the tree and shrub structure and composition of Mexican beech forests in the state of Hidalgo,and to compare the floristic similarity of these forests on the country scale using data from seven localities.Methods Specimens were collected for a period of one year at all locali-ties in the state of Hidalgo where beech forests are located.At each locality,five 400 m2 plots were established,and structural attributes(basal area,coverage,density and species richness)and six environmental variables were measured in the plots.The relationship between structure and microenvironment was estimated by simple correlation and canonic correspondence analysis(CCA).in addition,floristic similarity between different beech forest localities in the Sierra Madre Oriental was esti-mated by correspondence analysis(CA).Important Findings Twenty tree species and eight shrub species were identified;at all localities studied F.grandifolia subsp.mexicana dominated the can-opy.The multivariate analysis indicated that(i)in the four localities in the state of Hidalgo,all microenvironmental variables except pH are related to the variation observed in species composition and structure;(ii)the El Gosco locality had both tree and shrub species and microenvironmental factors different from those observed in the Fagus forests at the other localities in the study and(iii)the localities studied in order to draw country-scale comparisons could be divided into three groups by floristic similarity.The first group consisted of the Hidalgo localities,the second of the Veracruz localities,and the third,more different from the others,of the Tamaulipas locality.The results of this study provide the first reference for the relationship between the range of microenvironments and species structure in Mexican beech forests.Microenvironmental conditions in the larger beech forests could be used as a model for designing management and con-servation programs for this plant association.Because of its particular ecological and historical characteristics,this association could serve as an example of biodiversity conservation in Mexico. | Ernesto ChRodríguez-Ramírez Arturo Sánchez-González GregorioÁngeles-Pérez | 2018 | Journal of Plant Ecology2018，11，2： | 2 |
| 3 | Technical, economics and environmental analysis of semi-intensive shrimp ( Litopenaeus vannamei ) farming in Sonora, Sinaloa and Nayarit states, at the east coast of the Gulf of California, México显示文摘 | Jesús T. Ponce-Palafox Arturo Ruiz-Luna Sergio Castillo-Vargasmachuca Manuel García-Ulloa José Luis Arredondo-Figueroa | 2011 | Ocean and Coastal Management2011，，7： | 1 |
| 4 | HP0953-hypothetical virulence factor overexpresion and localization during Helicobacter pylori infection of gastric epithelium显示文摘BACKGROUND The high prevalence and persistence of Helicobacter pylori(H. pylori) infection, as well as the diversity of pathologies related to it, suggest that the virulence factors used by this microorganism are varied. Moreover, as its proteome contains 340hypothetical proteins, it is important to investigate them to completely understand the mechanisms of its virulence and survival. We have previously reported that the hypothetical protein HP0953 is overexpressed during the first hours of adhesion to inert surfaces, under stress conditions, suggesting its role in the environmental survival of this bacterium and perhaps as a virulence factor.AIM To investigate the expression and localization of HP0953 during adhesion to an inert surface and against gastric(AGS) cells.METHODS Expression analysis was performed for HP0953 during H. pylori adhesion. HP0953 expression at 0,3, 12, 24, and 48 h was evaluated and compared using the Kruskal-Wallis equality-of-populations rank test. Recombinant protein was produced and used to obtain polyclonal antibodies for immunolocalization. Immunogold technique was performed on bacterial sections during adherence to inert surfaces and AGS cells, which was analyzed by transmission electron microscopy. HP0953 protein sequence was analyzed to predict the presence of a signal peptide and transmembrane helices, both provided by the ExPASy platform, and using the GLYCOPP platform for glycosylation sites. Different programs, via, I-TASSER, RaptorX, and HHalign-Kbest, were used to perform three-dimensional modeling.RESULTS HP0953 exhibited its maximum expression at 12 h of infection in gastric epithelium cells.Immunogold technique revealed HP0953 localization in the cytoplasm and accumulation in some peripheral areas of the bacterial body, with greater expression when it is close to AGS cells.Bioinformatics analysis revealed the presence of a signal peptide that interacts with the transmembrane region and then allows the release of the protein to the external environment. The programs also showed a similarity with the Tip-alpha protein of H. pylori. Tip-alpha is an exotoxin that penetrates cells and induces tumor necrosis factor alpha production, and HP0953 could have a similar function as posttranslational modification sites were found;modifications in turn require enzymes located in eukaryotic cells. Thus, to be functional, HP0953 may necessarily need to be translocated inside the cell where it can trigger different mechanisms producing cellular damage.CONCLUSION The location of HP0953 around infected cells, the probable posttranslational modifications, and its similarity to an exotoxin suggest that this protein is a virulence factor. | Nancy K Arteaga-Resendiz Gerardo E Rodea Rosa María Ribas-Aparicio Alma L Olivares-Cervantes Juan Arturo Castelán-Vega Joséde Jesús Olivares-Trejo Sandra Mendoza-Elizalde Edgar O López-Villegas Christian Colín Pamela Aguilar-Rodea Alfonso Reyes-López Marcela Salazar García Norma Velázquez-Guadarrama | 2022 | World Journal of Gastroenterology2022，28，29： | 1 |
| 5 | Non-simultaneous quenching in a system of heat equations coupled at the boundary显示文摘 | Raúl Ferreira Arturo de Pablo Fernando Quirós Julio D. Rossi | 2006 | Zeitschrift für angewandte Mathematik und Physik2006，，4： | 1 |
| 6 | Soil remediation by Fenton-like process: Phenol removal and soil organic matter modification显示文摘 | Arturo Romero Aurora Santos Tomás Cordero José Rodríguez-Mirasol Juana María Rosas Fernando Vicente | 2011 | Chemical Engineering Journal2011，，1： | 1 |
| 7 | Innate immunity and the pathogenesis of type 1 diabetes显示文摘 | Arturo GF Francesco V Isabella S | | 0，，01： | 1 |
| 8 | The Ethics Statement of the Vancouver Forum on the Live Lung, Liver, Pancreas, and Intestine Donor显示文摘 | Timothy L. Pruett Annika Tibell Abdulmajeed Alabdulkareem Mahendra Bhandari David C. Cronin Mary Amanda Dew Arturo Dib-Kuri Thomas Gutmann Arthur Matas Lisa McMurdo Axel Rahmel S Adibul Hasan Rizvi Linda Wright Francis L. Delmonico | 2006 | Transplantation2006，，10： | 1 |
| 9 | Performance of Drought Indices for Ecological, Agricultural, and Hydrological Applications显示文摘 | Vicente-Serrano Sergio M Beguería Santiago Lorenzo-Lacruz Jorge Camarero Jesús Julio López-Moreno Juan I Azorin-Molina Cesar Revuelto Jesús Morán-Tejeda Enrique Sanchez-Lorenzo Arturo | 2012 | EN2012，，10： | 1 |
| 10 | Evidence of increasing drought severity caused by temperature rise in southern Europe显示文摘 | Sergio M Vicente-Serrano Juan-I Lopez-Moreno Santiago Beguería Jorge Lorenzo-Lacruz Arturo Sanchez-Lorenzo José M García-Ruiz Cesar Azorin-Molina Enrique Morán-Tejeda Jesús Revuelto Ricardo Trigo Fatima Coelho Francisco Espejo | 2014 | Environmental Research Letters2014，，4： | 1 |
| 11 | Desulfurization of transportation fuels by n-eomplexation sorbents: Cu(Ⅰ)-, Ni(Ⅱ)-, and Zn(Ⅱ)-zeolites显示文摘 | ARTURO J H M YANG F H QI G S | 2005 | Applied Catalysis B: Environmental2005，56，12： | 1 |
| 12 | Oxidation kinetics and effect of pH on the degradation of MTBE with Fenton reagent显示文摘 | Arturo A B Dionysios D D Makram T S | 2005 | Water Res2005，39，： | 1 |
| 13 | Experimental Analysis and Modeling of the Separation of Triacylglycerol and Free Fatty Acid Mixtures Using Molecular Distillation显示文摘 | Guillermo A M Arturo J G Hugo S G | 2011 | Industrial & Engineering Chemistry Research2011，50，11： | 1 |
| 14 | Incidence, organ dysfunction and mortality in severe sepsis: a Spanish multicentre study 显示文摘 | Jesus B Arturo MB Victor S | 2008 | Crit Care2008，12，： | 1 |
| 15 | Does Financial Lib- eralization Improve the Allocation of Investment? Micro Evidence from Developing Countries显示文摘 | Arturo G Fabio S Andrew W | 2007 | Jour hal of Davelopment Economics2007，83，2： | 1 |
| 16 | Anatomical variation of five plant species along an elevation gradient in Mexico City basin within the Trans-Mexican Volcanic Belt, Mexico显示文摘Change in environmental conditions with altitudinal gradients induces morpho-anatomical variations in plants that have been poorly documented in intertropical regions. Five species with three life forms, cryptophyte(Alchemilla procumbens, Geranium seemannii), hemicryptophyte(Acaena elongata, Lupinus montanus), and phanerophyte(Symphoricarpos microphyllus), distributed along an altitudinal gradient in the Sierra Nevada of central Mexico, were studied. The aims were to identify and evaluate their morpho-anatomical modifications under the hypothesis that the sizes of individuals and of their wood and leaf cell types decrease as elevation increases. Three individuals per species per site were collected at seven locations along the altitudinal gradient(2949-3952 m). Their morpho-anatomical characters were analyzed through multiple regression analyses. Elevation was the variable that best explained anatomical changes in the leaf and wood ofthe five species. Canopy density and potassium content in the soil also contributed to explain the variation in anatomical variables along the gradient. As elevation increased a bimodal pattern was observed in various anatomical characters as in the leaf width of A. elongata, A. procumbens and G. seemannii and in the vessel diameter of A. procumbens, G. seemannii, and L. montanus. Other features as the vessel diameter of A. elongata, the fiber length of S. microphyllus, and the ray width of A. elongata increased as the elevation increased. Anatomical traits have a tendency to decrease in size but just toward the end of the gradient, which is probably related to changes in canopy density. The plant response to the altitudinal gradient is more focused on anatomical adaptations than morphological variation; it is also species dependent. | P Mayte S.JIMéNEZ-NORIEGA Teresa TERRAZAS Lauro LóPEZ-MATA Arturo SáNCHEZ-GONZáLEZ Heike VIBRANS | 2017 | Journal of Mountain Science2017，14，11： | 1 |
| 17 | Characterization of Volatile Constituents of Mango ′Qalmi'(Mangifera indica L)显示文摘 | S H Ansari Mohammed All Arturo Velasco-Neguemela Maria Jose Perez-Alonso | 2004 | Journal of Essential Oil Research: JEOR Sep/Oct2004，16，5： | 1 |
| 18 | The Allevia- tion of the Aerodynamic Drag and Wave E{fects of High- speed Trains in Very Long Tunnels显示文摘 | ARTURO B MICHELE M STEFANO S | 2001 | Journal ofWind Engineering and Industrial Aerodynamics2001，89，5： | 1 |
| 19 | Monte Carlo evaluation of the Hausdorff distance for shape matching 显示文摘 | Arturo P Victor A R Raul Enrique S Y | 2006 | LNCS2006，4225，： | 1 |
| 20 | Helper strains for shortening the dormancy in Phycomyces blakesleeanus 显示文摘 | Margarita O Teresa S Arturo PE | 1985 | Current Genetics1985，9，5： | 1 |
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