Open Access Journal of Science最新文献_第2页

Study of the detection capacity of a GPR system using wavelet waves in a dry clay soil 干黏土中探地雷达系统小波探测能力的研究

Open Access Journal of Science Pub Date : 2023-08-14 DOI: 10.15406/oajs.2023.06.00198

Javier Andres Ledezma Rios

引用次数: 0

Antifungal activity of African medicinal plants: a review 非洲药用植物抗真菌活性研究进展

Open Access Journal of Science Pub Date : 2023-07-31 DOI: 10.15406/oajs.2023.06.00197

A. A, Poli S, Montant Mes, Hoinsou Y, Gbati L, Gbekley Eh, Djeri B

{"title":"Antifungal activity of African medicinal plants: a review","authors":"A. A, Poli S, Montant Mes, Hoinsou Y, Gbati L, Gbekley Eh, Djeri B","doi":"10.15406/oajs.2023.06.00197","DOIUrl":"https://doi.org/10.15406/oajs.2023.06.00197","url":null,"abstract":"In Africa many plants are used as antifungals. However, journals analysing the work of antifungal activities of plants in West Africa in recent years are rare. This study is a synthesis of publications from 2006 to 2021 on plants traditionally used in the fight against antifungal diseases. A systematic search was carried out in the Pub Med and Google Scholar database using the following keywords: vaginitis; West Africa; antifungal activity; medicinal plants; plant extracts; for articles published from 2006 to 2021. These selected articles focus on ethnobotanical studies, in vitro antifungal tests and molecules isolated from these plants. A total of 46 papers were selected from 7 West African countries with 56 plants studied. Nigeria and Ivory coast did more work with 22 and 14 papers respectively and studied more plants with 23 and 17 respectively. 43% of plants show good activity in vitro on strains of Candida albicans in the laboratory with a minimum fungicide concentration and a percentage of inhibition above 50%. The most active extracts are found in Ivory coast with respectively the hexane extracts of Terminalia mantaly with a minimum fungicide concentration= 0.024 mg / mL and the hydroethanolic extract of Terminalia ivorensis with a minimum fungicide concentration of 0.097 mg / mL. It is clear that the traditional West African pharmacopoeia can make an important contribution for the management of vaginitis.","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77263552","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

Biopesticidal activities of three botanicals (Ageratum conyzoides L., Petiveria alliacea L. and Hyptis suaveolens L. Poit,) against Sitophilus oryzae L 三种植物对米象虫的生物杀虫活性研究(英文

Open Access Journal of Science Pub Date : 2023-07-13 DOI: 10.15406/oajs.2023.06.00194

Oguntola Emmanuel Ayodeji

{"title":"Biopesticidal activities of three botanicals (Ageratum conyzoides L., Petiveria alliacea L. and Hyptis suaveolens L. Poit,) against Sitophilus oryzae L","authors":"Oguntola Emmanuel Ayodeji","doi":"10.15406/oajs.2023.06.00194","DOIUrl":"https://doi.org/10.15406/oajs.2023.06.00194","url":null,"abstract":"This study was carried out to evaluate the effectiveness of oil extracts from Ageratum conyzoides L., Petiveria alliacea L., and Hyptis suaveolens L. as biopesticides against Sitophilus oryzae in the Entomology Laboratory of Federal University of Technology Akure, Ondo State. The experiments were conducted at a temperature of 28±2°C and a relative humidity of 75±5%. Methanol was used as a solvent to extract the oil from the plants, and different concentrations (0.5%, 1.0%, 1.5%, 2.0%, and 2.5%) of each plant extract were prepared. The results demonstrated that the oil extracts from all three plants had a significant impact on the mortality of Sitophilus oryzae. Among them, the oil extract from Hyptis suaveolens proved to be the most effective, causing 100% mortality of Sitophilus oryzae at 2.0% and 2.5% concentrations within 96 hours of introduction. The LD50 (concentration required to cause 50% mortality) for Hyptis suaveolens was 0.53 (at 96 hours) and 0.36 (at 120 hours), while the LD90 (concentration required to cause 90% mortality) was 4.27 (at 96 hours) and 1.86 (at 120 hours) for Sitophilus oryzae. Furthermore, the oil extracts of all three plants significantly reduced adult emergence of the insects and prevented weight loss in the seeds. These effects were particularly prominent at concentrations of 2.0% and 2.5%. Statistical analysis indicated significant differences (p < 0.05) between the treatments and control groups for all the parameters assessed. In conclusion, the results of this study demonstrated that the leaf extract of Hyptis suaveolens was more effective than the extracts from the other plants in reducing Sitophilus oryzae populations, inhibiting adult emergence, and preventing weight loss in stored grains. Therefore, Hyptis suaveolens can be considered as a valuable addition to the range of botanicals used for Sitophilus oryzae control in food storage.","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"9 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77598868","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

Utopia and education through the thought of Thomas More 托马斯·莫尔的乌托邦与教育思想

Open Access Journal of Science Pub Date : 2023-07-12 DOI: 10.15406/oajs.2023.06.00193

Miguel Correia

引用次数: 0

Relationship between indoor air quality and space design for human health 室内空气质量与人体健康空间设计的关系

Open Access Journal of Science Pub Date : 2023-07-05 DOI: 10.15406/oajs.2023.06.00192

Sanyern Y Rico-García

引用次数: 0

Digital and inclusive pedagogical competences of educators 教育工作者的数字化和包容性教学能力

Open Access Journal of Science Pub Date : 2023-06-22 DOI: 10.15406/oajs.2023.06.00191

Francisco J García Tartera

引用次数: 0

West African medicinal plants: a review of their antimalarial activity 西非药用植物:抗疟活性综述

Open Access Journal of Science Pub Date : 2023-05-10 DOI: 10.15406/oajs.2023.06.00190

Poli S, Agbodeka K, Ataba E, A. A, Montant Mes, Hoinsou Y, Gbati L, Gbekley Eh, Karou Ds

{"title":"West African medicinal plants: a review of their antimalarial activity","authors":"Poli S, Agbodeka K, Ataba E, A. A, Montant Mes, Hoinsou Y, Gbati L, Gbekley Eh, Karou Ds","doi":"10.15406/oajs.2023.06.00190","DOIUrl":"https://doi.org/10.15406/oajs.2023.06.00190","url":null,"abstract":"Nowadays, the use of medicinal plants in the fight against malaria must be based on scientific results of safety and quality. However, reviews of the antiplasmodial activities of plants in West Africa in recent years are rare. This study analyzes scientific publications from 2010 to 2021 on plants traditionally used in antimalarial treatments in West Africa. A systematic search was carried out in the PubMed and google scholar databases using the following keywords: Malaria, Antiplasmodial activity, extract, medicinal plant, West Africa; for articles published from 2010 to 2021. These articles concern ethnobotanical studies, antiplasmodial tests, isolated molecules and toxicity tests. A total of 8 West African countries were explored and 54 papers from 2010 to 2021 were selected with 78 plants studied. Nigeria and Burkina Faso recorded more work with 28 and 7 papers respectively and studied more plants with 31, and 16 respectively. The most active extracts for in vitro tests are found in Nigeria with ethanolic extracts of Phyllanthus amarus and Ipomoea purpurea with respectively an Inhibitory Concentratin of 0.05 μg /mL and 0.06 μg / mL. The most active extract in vivo is found in Nigeria with the methanolic fraction of Parkia biglobosa with a 100% suppression rate at a dose of 100 mg/kg/Day. It is clear that the traditional West African pharmacopoeia is a potential source of effective phytomedicines for the management of malaria.","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87089180","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

Scientific research methods and methodologies of research applied in the professional training of the public administrator 科学研究方法和研究方法在公共行政人员专业培训中的应用

Open Access Journal of Science Pub Date : 2023-04-21 DOI: 10.15406/oajs.2023.06.00189

Jefferson Carmona Maldonado

引用次数: 0

Implementation of I2C and SPI communication protocol for temperature and acceleration measurement at FPGA 在FPGA上实现用于温度和加速度测量的I2C和SPI通信协议

Open Access Journal of Science Pub Date : 2023-03-27 DOI: 10.15406/oajs.2023.06.00188

Juan Carlos Maya Gonzalez

引用次数: 0

The nature of science dimension in the teaching discourse. a case study 教学话语中科学维度的本质。案例研究

Open Access Journal of Science Pub Date : 2023-03-20 DOI: 10.15406/oajs.2023.06.00187

Guillermo Cutrera

{"title":"The nature of science dimension in the teaching discourse. a case study","authors":"Guillermo Cutrera","doi":"10.15406/oajs.2023.06.00187","DOIUrl":"https://doi.org/10.15406/oajs.2023.06.00187","url":null,"abstract":"Spoken language is the vehicle through which a great deal of teaching takes place, as well as the way in which students show the teacher a great deal of what they have learned. In this context, teaching is mostly a means of providing access to those specific ways of speaking. In particular, metadiscourse is a discursive resource used in discursive exchanges in science classrooms. Despite its importance, metadiscourse has been poorly studied in the science classrooms. One of the metadiscourse methods studied in classrooms is the one corresponding to epistemic markers. The purpose of this study is to analyze how a future Chemistry teacher uses metadiscourse to build scientific knowledge along with the students. A qualitative study of the future teacher’s speech was undertaken from discursive exchanges in a physical chemistry classroom. All classes were video and audio recorded for analysis purposes. From total of four classes, a number of extracts were selected from the third class. Based upon a content analysis, representative categories of epistemic markers in the teacher's verbal discourse were inferred. Discourse markers referred to the scientific law recognition as well as its structure and physicochemical properties thay either vary or remain constant during the phenomenon occurence were found. These markers show the importance of considering an explicit work with the epistemic dimension of the content in order to promote the construction of scientific explanations understanding in the science classroom. Additionally, this importance implies the relevance of engaging the future teachers in reflective practices that demonstrate the work with the nature of science from the discursive use of epistemological markers.","PeriodicalId":19581,"journal":{"name":"Open Access Journal of Science","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87946916","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