e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.225
T. G. Domínguez-Gómez, Sarely Vicente-Juan, Edgar Giovanni Velásquez-Ortíz, Edgar Samuel Córdova-Delgado, Israel Cantú Silva, M. I. Yáñez-Díaz, F. Hernández, J. G. Colín
{"title":"Intercepción de la precipitación en Pinus engelmannii Carr. y Quercus rugosa Née en el Ejido Adolfo Ruiz Cortines, Pueblo Nuevo, Durango","authors":"T. G. Domínguez-Gómez, Sarely Vicente-Juan, Edgar Giovanni Velásquez-Ortíz, Edgar Samuel Córdova-Delgado, Israel Cantú Silva, M. I. Yáñez-Díaz, F. Hernández, J. G. Colín","doi":"10.32870/ecucba.vi17.225","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.225","url":null,"abstract":"Whith the purpose to determine the percentage of the incident precipitation, direct precipitation, stem runoff, interceptation lossesand physiochemical properties of rainfall in Pinus engelmannii Carr. and Quercus rugosa Née, 30 rain events were analyzed withinfragment of the Adolfo Ruiz Cortines Ejido, in the municipality of Pueblo Nuevo, Durango. Where a plot of 2500 mwasestablished to measure the hydrological properties during the period from May 05, 2018 to December 07, 2018. The results showedan incident precipitation of 856.24 mm. The direct precipitation in P. engelmannii Carr. and Q. rugosa Née represented the 72.11 %and 79.40 %, respectively. With an average of 75.76 % of the total precipitation. The stem runoff represented the 0.46 % and 0.11 %while the canopy interception showed 27.42 % and 20.27 % in P. engelmannii and Q. rugosa, respectively. The analysis ofthroughfall indicated that the maximum value of pH in the incident precipitation was 6.78 in direct precipitation in P. engelmannii,5.78 and in Q. rugosa 6.78. The stem runoff in P. engelmannii showed a pH of 6.08 and in Q. rugosa of 7.51. The electricconductivity of the stem runoff was 84.63 μS cmin P. engelmannii and of 170 μS cmin Q. rugosa; higher values compared toincident precipitation and to the direct precipitation in both species. The structure of the vegetation cover, the conformation of thetrees and the type of precipitation influence the amount of precipitation that reaches the soil ground.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131326828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.208
Luis Daniel Ruíz Carranza, Eduardo Alanís Rodríguez, Víctor Manuel Molina Guerra, Javier Jiménez Pérez, O. A. Aguirre calderón, Luis Gerardo Cuéllar Rodríguez
{"title":"Efecto de diferentes condiciones de cobertura de copa en la regeneración de especies leñosas del matorral espinoso tamaulipeco","authors":"Luis Daniel Ruíz Carranza, Eduardo Alanís Rodríguez, Víctor Manuel Molina Guerra, Javier Jiménez Pérez, O. A. Aguirre calderón, Luis Gerardo Cuéllar Rodríguez","doi":"10.32870/ecucba.vi17.208","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.208","url":null,"abstract":"The Tamaulipas thorn scrub has been strongly affected by the change in land use to carry out different activities, so it currently hassecondary vegetation areas with different structure and canopy cover. In the present study, the density, specific richness, Shannon'strue diversity index and Importance Value Index (IVI) of natural regeneration were evaluated, according to three conditions ofcrown cover of the upper stratum (mature scrub). The three canopy coverage conditions were classified according to the percentageof canopy area covered within each site. 12 sites of 100 mwere established for each condition, where the crown area of trees andshrubs was measured. To evaluate natural regeneration, 5 sites of 1 mwere established within each site of the mature scrub. Todetermine significant differences between the parameters, a one-factor analysis of variance was performed, as well as the similarityusing the Bray-Curtis model. 22 species were recorded, Fabaceae being the best represented family. 5 species were located withpreference for some crown cover condition. Croton incanus, is the species with the highest IVI. The values of density, specificrichness and Shannon index did not show significant differences according to the 3 established coverage conditions.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128263381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.226
R. Basilio-González, K. Hernández-Guzmán, M. L. Fajardo-Franco, M. Aguilar-Tlatelpa, P. Molina-Mendoza
{"title":"Estructura de la diversidad en aves y reptiles en la localidad de Lipuntahuaca, Huehuetla, Puebla","authors":"R. Basilio-González, K. Hernández-Guzmán, M. L. Fajardo-Franco, M. Aguilar-Tlatelpa, P. Molina-Mendoza","doi":"10.32870/ecucba.vi17.226","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.226","url":null,"abstract":"The Sierra Norte de Puebla is an important region due to its high levels of wealth and biodiversity. The objective of the presentstudy was to identify the diversity structure of birds and reptiles, in areas of corn cultivation, coffee plantation and forest, throughdirect observations, image capture by means of a photographic camera, for its later identification in guides field. Four transects wereestablished, the first in forest, the second in coffee, the third in corn cultivation and the fourth in a mixture of the three vegetation’s.A total of 48 species of birds belonging to 13 orders, 20 families and 39 genera were identified. In the case of reptiles, 6 speciesbelonging to 1 order, 4 families and 4 genera. The coffee area presented the greatest diversity and richness of species, followed bythe forest area. In addition, 2 species that are subject to special protection and one threatened according to NOM-059 werevisualized, these species are: Aulacorhynchus prasinus, Psarocolius montezuma and Pionus senilis. For the group of reptiles aspecies was found which is: Aspidoscelis lineattissimus (subject to special protection). It is concluded that the coffee areas have thebest indices of richness, abundance and diversity of species, this may be due to the fact that they present greater benefits for theirdevelopment of birds and reptiles.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133380280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.218
José Jair Arredondo-López, Ulises Espinosa-Rojas
{"title":"Pruebas de germinación y viabilidad de tres coníferas a través del tiempo de almacén en el Banco de Germoplasma de la Comisión Forestal del Estado de Michoacán","authors":"José Jair Arredondo-López, Ulises Espinosa-Rojas","doi":"10.32870/ecucba.vi17.218","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.218","url":null,"abstract":"The diversity of forests in Mexico is affected by rapid population growth, which has causes forest resources to be used in anaccelerated way, thus increasing deforestation rates. For this, there are governmental institutions such as the Germplasm Bank of theState Forestry Commission, which is in charge of the collection, processing, storage and analysis of seeds (forest germplasm), forlater production in the nursery. In the present study, the percentage of viability (PV) and the percentage of germination (PG) of theseed lots of three species of the genus Pinus stored in cold storage (Pinusmichoacana,P.montezumae y P.pseudostrobus) wereevaluated, considering the storage time (16 years), as a variation agent, with the aim of proposing its registration. The GeneralizedLiner Model and linear regression showed differences in the averages of both percentages when comparing them between species,being those of P.michoacana greater ( 74.34%) and lower those of P.montezumae (64.66%), by species P.michoacana (190batches) only in PG there was a difference with a positive trend when increasing the storage time, in P.montezumae (216 batches)there was also a difference when comparing the storage time, a decrease in these percentages was observed with increasing storagetime, and for P.pseudostrobus (130 batches) there was no difference, in terms of the representative lot of each species (222131-A02,323152-A03, 322147-A02= batch number), there was no difference in relation to time storage. As a conclusion, both by species andby each lot, it is not possible to propose that they are still suitable to be kept in storage, since they do not present sufficient evidenceof a possible downward trend in their percentages of viability and germination in relation to storage time.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124242258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.229
María Fernanda Murillo Alfaro, J. A. B. Ordóñez Díaz, Cecilia Nieto de Pascual-Pola, Luis Enrique Ortega Treviño, Anabell Munguia Barcenas, Adolfo Galicia Naranjo, Erik Eliezer Velarde Meza
{"title":"Contenido y captura de carbono en plantación de Pinus patula Schiede ex Schltdl.&Cham., en el ejido Rancho Nuevo Nanacamila, Zacatlán de las Manzanas, Puebla, México","authors":"María Fernanda Murillo Alfaro, J. A. B. Ordóñez Díaz, Cecilia Nieto de Pascual-Pola, Luis Enrique Ortega Treviño, Anabell Munguia Barcenas, Adolfo Galicia Naranjo, Erik Eliezer Velarde Meza","doi":"10.32870/ecucba.vi17.229","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.229","url":null,"abstract":"Forest plantations represent one of the main mitigation alternatives to climate change due to carbon stores in biomass and soil. Inpresent work the estimation of biomass and carbon stores was carried out in a plantation of Pinus patula Schiede ex Schltdl. &Cham. Location of the site was the Rancho Nuevo Nanacamila ejido in the Zacatlán de las Manzanas municipality, Puebla. Fiveplots of 33 x 33 m were established in order to verify distances between trees in the field. Allometric equations were used to knowthe volume gained during its growth in 2017 and 2018, and the aerial biomass was estimated to calculate the present carbon content.As a result, a total of 1,580 trees were measured whose diameters ranged from 0.5 to 27.9 cm. The average biomass calculation was3,841 t ha. Because the growth of trees is relatively slow, the most effective way to fix COis through proper forest management,harvesting at the best time and turning wood into durable products that allow to store carbon for a long period of time.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114164988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.209
Marian Teresa Jiménez Zárate, Gisela Virginia Campos Angeles, Gerardo Rodríguez Ortiz, J. R. Enríquez del Valle, Vicente Arturo Velasco Velasco
{"title":"Caracterización física ex-situ de Chamaedorea metallica como recurso forestal no maderable","authors":"Marian Teresa Jiménez Zárate, Gisela Virginia Campos Angeles, Gerardo Rodríguez Ortiz, J. R. Enríquez del Valle, Vicente Arturo Velasco Velasco","doi":"10.32870/ecucba.vi17.209","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.209","url":null,"abstract":"Seed quality analysis determines factors that can affect a seed lot or samples. The aim of the studio was determine physical qualityof a lot of seeds of the Chamaedorea metallica collected in two fruiting periods; March to September 2018 and February to April2019; They were collected from mother plants of Chamaedorea metallica in the Ye`tsil garden at the Technological Institute of theValley of Oaxaca. The fruits presented purple-purple coloration in the exocarp; they were cleaning process to obtain the seeds,which consisted of soaking the fruits in water for 48 hours, they washed with running water until the mesocarp was completelydetached. The seeds dried under shade for five days on bond paper. The analysis carried out according to the minimum parametersmentioned by the International Seed Testing Association (ISTA). Data of percentage of purity, weight, number of seeds per kgandmoisture content obtained. The data from the physical analysis differed in both years, obtaining the best results in moisture contentand weight in the seeds collected in 2019. We concluded that the seeds of the mother plants of Chamaedorea metallica are of goodquality; that the collection period and the time of the fruit on the plant influence their quality.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126437193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.227
Samuel Alberto García-García, E. Alanís-Rodríguez, Ó. Aguirre-Calderón, E. Treviño-Garza, L. G. Cuéllar-Rodríguez, Alejandro Collantes Chávez-Costa
{"title":"Caracterización de comunidades forestales en México: Revisión documental","authors":"Samuel Alberto García-García, E. Alanís-Rodríguez, Ó. Aguirre-Calderón, E. Treviño-Garza, L. G. Cuéllar-Rodríguez, Alejandro Collantes Chávez-Costa","doi":"10.32870/ecucba.vi17.227","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.227","url":null,"abstract":"The characterization of forest communities consists of knowing the spatial arrangement both vertically and horizontally that thetrees present in a place, at a certain time and that determines the integrity and stability of the forest. The objective of this work wasto compile and analyze scientific articles, technical reports and bulletins characterized by the structure of communities, as well astheir richness and biological diversity. The following databases were used: CONRICYT, SciELO, SCOPUS, JSTOR andLATINDEX, as well as the REDIB and academic Google search engines. The keywords used in the search were \"Horizontalstructure\", \"Vertical structure\", \"Characterization\", \"Spatial distribution patterns\" and \"Diametric structure\". 109 investigationspublished between 1980 and 2020 were compiled; 71% were carried out in temperate coniferous and broadleaf forests. The treestratum was the most studied (72.22%); Most of the studies are descriptive (64.22%) and are mainly related to conservation andforest management. The most used dasometric and environmental variables are: diameter (cm) and height (m), as well as altitudeand slope. The most widely used ecological indices were Shannon and Wiener (H ') and the importance value (IVI). It wasconcluded that the most studied forest communities are the temperate coniferous and broadleaf forests, where the arboreal stratum isstudied. The characterization of forest communities has been evolving, integrating new evaluation methods, however, there are somethat have been used over time.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127239536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.216
C. M. Guzmán Paredes, Agustín Gallegos Rodríguez, Efrén Hernández-Álvarez, Héctor Jesús Contreras Quiñones
{"title":"Investigación de operaciones para desarrollar procesos de optimización en manejo forestal: determinación en campo de modelos multivariados","authors":"C. M. Guzmán Paredes, Agustín Gallegos Rodríguez, Efrén Hernández-Álvarez, Héctor Jesús Contreras Quiñones","doi":"10.32870/ecucba.vi17.216","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.216","url":null,"abstract":"The most widely used technique in operations research is linear programming, and one of the most widely used algorithms in thisfield is simplex method. The management of forest ecosystems is an ideal field to implement optimization models, since clear goalsmust normally be met, and the available resources are usually limited. The aspects involved are complex, several routes of actioncan be taken, and it is important in order to make the best decision. The simplex method, once objective function and restrictions areestablished, allows to consider all the possibilities, and make the decision that provides the greatest advantages. Undoubtedly, awrong decision can cause damage to forest ecosystem and economic losses, so a tool that helps in this work will always be a greatally. Once the problem has been formulated in mathematical terms, software or programming languages specialized are usuallyrequired, which can be a problem if access to computer equipment and internet connectivity is not the most appropriate. Mobiledevices such as cell phones, tablets, and programmable calculators have become small computers at an affordable price, withincreasingly powerful processors and a good amount of memory. This, coupled with availability of applications of simplex method,or even the ability to program it directly on these devices, makes it possible to have in the palm of hand tools that previouslyrequired very sophisticated computers. This work reviews the options currently available to run simplex method, both analyticallyand graphically, on portable devices. This topic is of interest to both professional and student of forestry sector.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126792016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
e-CUCBAPub Date : 2021-12-29DOI: 10.32870/ecucba.vi17.207
Jorge Reyes-Reyes, Juana Rodríguez-Morales, Dorian de Jesús Pimienta de la Torre, Mario Alonso Fuentes Pérez, Juan Francisco Aguirre Medina, Agustín Merino García
{"title":"Diagnóstico de la calidad de planta en el vivero forestal El Campanario, Tuxtla Chico, Chiapas","authors":"Jorge Reyes-Reyes, Juana Rodríguez-Morales, Dorian de Jesús Pimienta de la Torre, Mario Alonso Fuentes Pérez, Juan Francisco Aguirre Medina, Agustín Merino García","doi":"10.32870/ecucba.vi17.207","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.207","url":null,"abstract":"Quality plant production in forest nurseries guarantees success in the establishment of commercial forest plantations andreforestation programs. Seedling quality refers to the appropriate morphological and physiological characteristics of plants tosurvive and grow satisfactorily under the environmental and ecological conditions of the place where they will be planted. Theobjective of this work was to know and describe the main cultural practices and evaluate the quality parameters of plants ofPrimavera (Tabebuia donnell-smithii Rose), Roble (Tabebuia rosea (Bertol.) DC.) and Cedro (Cedrela odorata L.) that are producedfor marketing purposes in the El Campanario forest nursery located in the First Section of Izapa, municipality of Tuxtla Chico,Chiapas. The variables evaluated were total height, stem diameter, total biomass, as well as the shoot- root ratio, the sturdinessquotient, lignification index and Dickson quality index. The results were analyzed using descriptive statistics and compared with the results of other studies carried out in Mexico. From the results obtained, it is established that the cultural practices that are appliedin the nursery are adequate, which allows obtaining plants of good quality forest species. In terms of height and diameter, the threeforest species are within the established range to be planted in the field. Budget constraints make it difficult to increaseproductivity, but without a doubt, having the economic resources on time and sufficient for the sales of the plants on time, willallow better planning of the different activities and avoid delays in production.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130760223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biorremediación de metales pesados en México: técnicas y tendencias de uso para aplicación en actividades mineras","authors":"Karen Alejandra Cavada-Prado, Carla Sofía González-Sánchez, E. Alanís-Rodríguez, Alejandro Collantes Chávez-Costa","doi":"10.32870/ecucba.vi17.205","DOIUrl":"https://doi.org/10.32870/ecucba.vi17.205","url":null,"abstract":"Bioremediation applied as a recover technique for soils contaminated by heavy metals is a tool with potential under development torecuperate soils damaged by mining activities in Mexico. The aim of this study was to compile information related to the differentmethods of bioremediation of heavy metals in soils in Mexico, which can later be applied to degraded soils contaminated by miningactivities. To achieve this, a documental search was carried out for mexican scientific papers published between 2000 and 2020 inseveral databases, using keywords in Spanish and English. A total of 52 experimental papers were registered in 15 of the states,among which bioremediation techniques that involve the individual or conjugated use of plants, bacteria and fungi were the moststudied. Within these, the use of plants, also called phytoremediation, was the method of interest among authors.","PeriodicalId":447849,"journal":{"name":"e-CUCBA","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115132019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}