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101 articles for “Chemical Type”
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Research ArticleOpen accessIn the abstractEffect of Pachyrrizus erosus Extract on the Thrips Attack Phenomenon (Thripidae) in Capsicum annuum L. LeaveTasmin Tangngareng, Asni Johari, Ratna Sari Dewi et al.Thrips are one of the main pests of chili plants. Until now, the method of controlling pests and diseases that are considered highly effective is the chemical method. Chemical controls have a major impact on environmental damage. One alternative that can be done is to control biologically using yam seed extract (Pachyrrizus erosus Urban). This study aims to analyze the … …OnLine Journal of Biological Sciences, Vol. 19, Issue 1 · 24 Jan 2019 · 7,426 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Cement Chemistry on the Performance of Cement Stabilized Tropical Lateritic SoilOdumade Adegboyega Oduniyi, Ezeah Chukwunonye, Charles Nnamdi Ezugwu, Ekeoma EmmanuelChemical composition affects overall performance of cement on other materials such as when used in concrete or for stabilization of lateritic soil. This research studied the influence of chemical composition of three Portland cement types represented as samples A, B and C on engineering performance when mixed with laterite under tropical environmental conditions.The Lateritic soil sample classified according to AASHTO … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 21 May 2018 · 8,804 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Treated Wastewater in Terms of Environmental StandardsSona Pazdar, Saeid Eslamian, Hossein Gholami, Kaveh Ostad-Ali-AskariThe desired use of refined wastewater has not yet found its proper place in many countries, therefore, achieving a relative equilibrium in the field of urban wastewater evacuation and re-utilizing it is a fundamental principle. And this great matter is not possible except by developing a comprehensive refinery waste management system. The set of measures that have been taken so … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 4 · 27 Sep 2019 · 7,908 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Method for Transmitting Spacecrafts in Space with Velocity of at Least 0.01 of the Light Speed Using Materials with Very High Kinetic Energy in High Electric FieldsMario Nady AiadMany space new missions are on calendar this decade for Moon, Mars and other planets. Some of these missions are depending on simple reliable chemical thrusters and others on the nonchemical advanced propulsion techniques. In most of nonchemical techniques a nuclear source of energy is necessary as in nuclear electric rockets where the maximum velocity produced is around 20 km/s. … …American Journal of Engineering and Applied Sciences, Vol. 16, Issue 4 · 22 Dec 2023 · 5,365 accessesView PDFCite
Research ArticleOpen accessIn the abstractModern Propulsions for the Aerospace IndustryRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuThis paper aims to contribute to the study of propulsion systems for modern aerospace vehicles with the obvious aim of improving them and to give them the ability to move much faster and easier in any direction, for a very long time, going through huge distances without the need of fuel refueling, as is the case with conventional, chemical propulsion. … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 12 May 2018 · 7,995 accessesView PDFCite
Review ArticleOpen accessIn the abstractReview on Main Active Substances and Functions in Jasminum Sambac (L.) AitonJiaqi Jian, Keying Han, Qiwei Guo et al.This article reviewed the relevant literature on the main active substances and functions of jasmine (Jasminum sambac (L.) Aiton). The results showed that: 1. The main active substances in jasmine are volatile oil, polysaccharides, and flavonoids. Volatile oil is a mixture of large molecules; Polysaccharide is a type of heteropolysaccharide or sugar complex; Flavonoids mostly exist in the form of … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 18 Sep 2023 · 7,152 accessesView PDFCite
Research ArticleOpen accessIn the abstractPreparation of Rose Vinegar Rich in Gamma-Linolenic Acid and Analysis of its Nutritional Composition and Antioxidant ActivityYao Zhang, Qing Liu et al.Despite the rapid development of various types of fruit vinegar or nutrient-fortified vinegar, the weakened functions or high cost is still the main limiting factor for healthy vinegar. In the present study, a new type of rose vinegar was obtained from raw grain supplemented with natural extract of roses through the cooperative fermentation of multiple microorganisms by adding Mucor circinelloides … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 8 Aug 2023 · 6,388 accessesView PDFCite
Research ArticleOpen accessIn the abstractBacterial Diversity and Community Structure Characteristics in Rhizosphere Soil of Coconut (Cocos nucifera L.) under Intercropping PineappleLilan Lu, Hui Zhu, Yingying Liu et al.To explore the bacterial diversity and community structure characteristics of the rhizosphere soil of fruit type coconuts of different varieties under the intercropping pineapple model, the Illumina high throughput sequencing technology was used to detect the composition and diversity of soil microorganisms. Furthermore, the correlation between the physical and chemical properties of soil and the characteristics of the rhizosphere soil … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 1 · 16 Feb 2023 · 5,745 accessesView PDFCite
Research ArticleOpen accessIn the abstractContributions to the Stirling Engine StudyFlorian Ion Tiberiu PetrescuIn the process of transforming thermal energy into mechanical work, among the known thermal machines, the Stirling engine is the one that can achieve the highest yield (theoretically up to the maximum yield of the Carnot cycle), although in practice it is reduced by the properties of gas and materials used such as friction coefficient, thermal conductivity, melting point, breaking … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 4 · 22 Nov 2018 · 10,172 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Occurrence of Entomopathogenic Fungi on Mineral and Peat Soils in Peninsular MalaysiaPong Kuan Kin, Wahizatul Afzan Azmi, Norman Kamarudin et al.The aims of this study are to isolate and identify Entomopathogenic Fungi (EPF) from mineral and peat soils in relation with the soil physico-chemical parameters. The mineral soil was sampled from the MPOB Research Station Hulu Paka in Terengganu, whereas peat soil was sampled from the MPOB Research Station Teluk Intan in Perak. Isolation of these fungi was carried out … …American Journal of Agricultural and Biological Sciences, Vol. 12, Issue 1 · 12 Jan 2017 · 8,203 accessesView PDFCite