Open Access Journal of Science最新文献_第7页

Access to electricity and water in Nigeria: a panacea to slow the spread of Covid-19 尼日利亚获得电力和水:减缓Covid-19传播的灵丹妙药

Open Access Journal of Science Pub Date : 2020-04-21 DOI: 10.15406/oajs.2020.04.00148

Raimi Aziba- anyam Gift, Raimi Morufu Olalekan

引用次数: 23

World is on alarm for “Coronavirus” 世界对“冠状病毒”保持警惕

Open Access Journal of Science Pub Date : 2020-03-17 DOI: 10.15406/oajs.2020.04.00147

Ferhan Soyuer

引用次数: 0

Assessment of new conditions for oil extraction from shark liver pool 鲨鱼肝池油提取新条件的评价

Open Access Journal of Science Pub Date : 2020-02-27 DOI: 10.15406/oajs.2020.04.00145

P. C. Quero-Jiménez, Lester Alejandro Arias Felipe, Darlene Lugo Ramirez, Julio García, M. E. Rodriguez, J. D. L. Torre, O. Montenegro, Dulce Maria Gonzalez, L. Jimenez, Reinaldo Molina Ruiz

引用次数: 1

High-temperature grain drying: an economic analysis applied to Brazilian conditions 高温谷物干燥:适用于巴西条件的经济分析

Open Access Journal of Science Pub Date : 2020-02-27 DOI: 10.15406/oajs.2020.04.00146

A. J. Steidle Neto, Pricila Araujo Santana, D. C. Carvalho Lopes

引用次数: 3

Chronicle of Rovigo♣ A city that deserves rehabilitation 罗维戈编年史:一个值得重建的城市

Open Access Journal of Science Pub Date : 2020-02-03 DOI: 10.15406/oajs.2020.04.00143

João Vicente Ganzarolli de Oliveira

引用次数: 0

Removal of sunset YellowAzo dye using activated carbon entrapped in alginate from aqueous solutions 用海藻酸盐包裹活性炭去除日落黄偶氮染料

Open Access Journal of Science Pub Date : 2020-01-24 DOI: 10.15406/oajs.2020.04.00142

H. Abdel-Aziz, Soha A Abdel- Gawad

引用次数: 7

Methodology for bilingual recommendation, Spanish-English, of literary texts in a high school language resource center 高中语文资源中心文学文本双语推荐的方法论

Open Access Journal of Science Pub Date : 2019-06-13 DOI: 10.15406/oajs.2019.03.00139

Ernesto Hernández Rodríguez

引用次数: 0

Detergents and surfactants: a brief review 洗涤剂和表面活性剂:综述

Open Access Journal of Science Pub Date : 2019-06-04 DOI: 10.15406/oajs.2019.03.00138

H. Ranji, Babak Babajanzadeh, Saied Sherizadeh

{"title":"Detergents and surfactants: a brief review","authors":"H. Ranji, Babak Babajanzadeh, Saied Sherizadeh","doi":"10.15406/oajs.2019.03.00138","DOIUrl":"https://doi.org/10.15406/oajs.2019.03.00138","url":null,"abstract":"The use of laundry detergents based on synthetic ingredients is not an old innovation. Since ancient times until World War I, people for washing their clothes used soaps that were produced by saponifying fats and oils into fatty acid salts. In 1931, for the first time, Dreft powder introduced to the world as a synthetic detergent in the US. In 1946, Tide came to be known as a new detergent by P&G, armed with the phosphate. In 1988, the same company produced for the first time in history of detergents, liquid detergent with color-safe bleach. For decades, powdered and liquid laundry detergents containing linear alkyl benzene sulfonates (LABS), sodium lauryl ether sulfate (SLES), sodium dodecyl sulfate (SDS), ether sulfates, and alcohol ethoxylates as surfactants, along with builders, enzymes, polymers, and possibly bleaches as additional active ingredients have been used to meet the household laundry needs. These formulations were designed to deal with different types of dirt and stains depended on water conditions at various countries and cities.1 Recently, significant efforts have been done to develop surfactants to be used in detergent industry. In commercial applications some of the surfactants such as α-sulfomethyl esters and alkyl polyglucosides (APGs) are known as newer materials. Some of the other materials, such as ethoxylated amines, alkanolamides, betaines, alkyldiphenyl, and oxide disulfonates, have been used for many years routinely in other industries. One of the mostly used surfactants which have been used in powdered detergent industry is believed to be linear alkylbenzene sulfonate known as LAS. This surfactant is an inexpensive and accessible ingredient that is effective on dirt but less so on greasy or oily stains. Hence, still, searching for raw materials with low cost, higher yields and most importantly searching for green methodologies in detergent industry is of prime importance.","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84029831","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}

引用次数: 14

Productive diversification in livestock farms linking wildlife 畜牧场的生产多样化与野生动物联系在一起

Open Access Journal of Science Pub Date : 2019-05-24 DOI: 10.15406/oajs.2019.03.00137

R. M. Pérez

{"title":"Productive diversification in livestock farms linking wildlife","authors":"R. M. Pérez","doi":"10.15406/oajs.2019.03.00137","DOIUrl":"https://doi.org/10.15406/oajs.2019.03.00137","url":null,"abstract":"The objective of this document is to analyze the importance of wildlife populations in the farms where livestock is carried out, with the purpose of linking the use of wild populations with the sustainability of livestock farms. Agricultural activities present stronger variations than the other sectors of the Mexican economy; therefore, livestock production is subject to several shocks that generate strong fluctuations in the stability of the sector. This instability increases the risk in agricultural production. Environmental risks generate uncertainty with potential losses of profits associated with the presence of uncertainty about the possible results, leading to the economic agents to take advantage of this situation or to cover themselves in case of eventual losses. The existence of risks explain the defensive behavior of some farmers, such as the reluctance to modify the harvested methods or the use of new or innovative diversified systems, which do not seem optimal from the point of view of profitability.1 Changes in economics growth in the agriculture and livestock subsectors between the years 2012 to 20172,3 are shown in Figure 1. However, it is important to focus attention to alternative activities to diversify livestock production, whose aim would be: To reduce the vulnerability of the farm when the environment and the economy are unstable; to optimize the use of natural resources of wild fauna and flora present in livestock farms, through the generation of alternative products or services; to take advantage of opportunities for the use of wildlife, according to public policies that are governed by the binary principle of Conservation and Use.4","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81464189","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}

引用次数: 0

Morphostructural characterization of the Creole goat (Capra hircus) of the municipality of Cuajinicuilapa, on the Costa Chica of Guerrero, Mexico 墨西哥格雷罗州中国海岸夸吉尼奎拉帕市克里奥尔山羊(Capra hircus)的形态结构特征

Open Access Journal of Science Pub Date : 2019-05-15 DOI: 10.15406/oajs.2019.03.00136

J. Ponce, E. Franco, E. G. González, E. Guillermo, BC Pineda -Burgos, PE Hernández -Ruiz, PI Romero -Rodríguez, JC Rodríguez Castillo

{"title":"Morphostructural characterization of the Creole goat (Capra hircus) of the municipality of Cuajinicuilapa, on the Costa Chica of Guerrero, Mexico","authors":"J. Ponce, E. Franco, E. G. González, E. Guillermo, BC Pineda -Burgos, PE Hernández -Ruiz, PI Romero -Rodríguez, JC Rodríguez Castillo","doi":"10.15406/oajs.2019.03.00136","DOIUrl":"https://doi.org/10.15406/oajs.2019.03.00136","url":null,"abstract":"Goats were introduced to Mexico by the Spaniards during the conquest in the sixteenth century. The main breeds that arrived the country and gave rise to the Mexican Creole goat were the White Celtiberica, the Murciana and the Granadina.1 The “Creole” of this cattle was probably due to the isolation, the main force of several geographically different local goat populations. A well-marked situation in the country, while further south the frequency of pure Creole flocks increases.1,2 The morpho-structural characteristics of the mexican Creole goats are differentiated by two types of animals: small (25-32 kg and 60 cm of height at the cross in adult goats) in the center and southwest of the country, and medium (30-40 kg in adults goats) in arid and semi-arid regions of the country.3,4 On the other hand, the characteristics of Creole goats from Central America (smaller size, 28kg, 71 cm thoracic circumference and 64 cm height at the cross)5 are smaller than those of Mexico and the Caribbean (18.2-34.4 kg and height at the cross 50 cm).6 However, due to the lack of information of their origin, reproductive management, genotypic and phenotypic characterization; isn’t possible to differentiate the genetic composition of the goats flocks.7 In developing countries like Mexico it’s necessary to design reproductive and genetic improvement programs more efficient where genetic differences are involved between populations of production systems, this will allow to decide which genotypes introduce to the flocks to make them more efficient.2,8","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"164 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86449962","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}

引用次数: 3