 Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | | The end of the list has been reached or no journals were found for your choice. |
|
|
- RELAXING MULTICURVES ON THE TWICE PUNCTURED MÖBIUS BAND
Authors: Abdullah BAYKAL; Ferihe ATALAN, Saadet Öykü YURTTAŞ
Abstract: Let N1,n (n ≥ 1) be a non-orientable surface of genus 1 with n punctures and one boundary component. Generalized Dynnikov coordinates provide a bijection between the set of multicurves in N1,n and Z2n−1 \ {0}. In this paper we restrict to the case where n = 2 and describe an algorithm to relax a multicurve in N1,2 making use of its generalized Dynnikov coordinates
PubDate: Mon, 26 Jun 2023 00:00:00 +030
- A NEW IOT-BASED SMART IRRIGATION MANAGEMENT SYSTEM
Authors: Waseem HAMDOON; Ahmet ZENGİN
Abstract: Most fresh water is used in agriculture. There has been a constant interest in presenting systems and solutions that rationalize water resources in agriculture without reducing productivity. In contrast the solutions must improve production while utilizing less water. On the other hand, The Internet of Things is a prominent recent technology that provides various solutions in many disciplines, including agriculture and irrigation.This paper proposes an Internet-of-Things-based architecture for smart irrigation by developing a prototype with a controller unit, water pumps, and sensors. These systems monitor the soil's irrigation needs and determine the right amount based on sensor data. As these values are delivered through cloud computing to a user's mobile app, irrigation may be monitored and controlled from multiple angles. This comprises manual irrigation mode, automatic irrigation mode, and determine the right amount of irrigation based on sensor relationships.
PubDate: Mon, 26 Jun 2023 00:00:00 +030
- AN EXTENSIVE STUDY ON MACRO-HETEROCERA (LEPIDOPTERA) FAUNA OF BOTAN VALLEY
NATIONAL PARK, TURKEY
Authors: Erdem SEVEN
Abstract: This paper presents a faunal list of Macro-Heterocera species from the Botan Valley National Park, which is Turkey’s 45th national park, consists of approximately 120 thousand acres and 29 kilometers in south-eastern Turkey, comprising the superfamilies Bombycoidea, Drepanoidea, Geometroidea, Lasiocampoidea, Noctuoidea. The area has scarcely been investigated before. This study contains the first comprehensive faunal list of macro-moths of Botan Valley National Park. Totally 135 Lepidoptera species were determined. Among them, 99 moth species are newly reported from the Botan Valley National Park, and 6 of them are new discovered from Siirt province. Examined samples and the location of each species are presented. Sites information and collection dates are mentioned.
PubDate: Mon, 26 Jun 2023 00:00:00 +030
- ENHANCED TOTAL PHENOLIC CONTENT EXTRACTION FROM CUCUMIS MELO L. (KULTIK)
KERNEL BY DEEP EUTECTIC SOLVENT (DES)
Authors: Çağlar Mert AYDIN
Abstract: Kernel of Cucumis melo L is a by-product produced from the water-melon production process. The phenolic compounds could be considered as a potential bioactive source for industrial applications. Therefore, the extraction of these compounds as much as possible will decrease valuable waste and could lead to produce value-added products. In the first part of this study, comparation of the effect of DESs and conventional solvent on total phenolic content (TPC) was performed. Some DESs had significantly better extraction yield than conventional solvent. Therefore, optimization of extraction conditions was performed by single factor experiment. Optimized parameters are molar ratio, type of HBA (hydrogen bond acceptor), addition of water content, extraction time and extraction temperature. From the results obtained, all these parameters were found to have an impact on TPC extraction yield. Also, it is noteworthy that the extraction yield using some selected parameters was on decrease after a certain extent. The best extraction parameter for Cucumis melo L. was found to be choline chloride as HBA, 1:4 molar ratio, %30 water addition, 500 extraction temperature and 30 min extraction time. This result confirms that kernel of Cucumis melo L. is a valuable ingredient due to its bioactive content, DESs could be a good alternative to conventional solvents and the industrial applications of DESs could be possible.
PubDate: Mon, 26 Jun 2023 00:00:00 +030
- CLOSED BKS-TYPE UNIVERSES AND DIRAC SPIN EFFECT IN THE RAINBOW GRAVITY
Authors: Sibel KORUNUR
Abstract: The result related to astrophysical datasets suggest that our universe has recently entered a phase of accelerated expansion. This accelerated expansion is not a situation predicted by the general theory of relativity. Therefore, the emergence of alternative approaches to general relativity has become inevitable. Modifying general relativity and absolute parallelism theory are just two of these theories. In addition, with the discovery of gravitational waves, the need for a view that includes gravitational quantum contributions arose. In this context, rainbow gravity has an approach that also offers quantum contributions to the theory of general relativity and absolute parallelism. In this study, axial vector torsion is calculated for BKS-type universe models using the rainbow gravity formalism. With the calculations made, the vector part and axial vector part components of the torsion tensor are obtained. The spin process, which contributes to the Dirac particles, is also investigated using the rainbow gravitational theory. However, since the obtained axial vector fragment is in time-like form, it is concluded that the spin vector of the Dirac particle is constant. The axial part of the torsion tensor for general BKS-type universe models is calculated and presented in a table for some well-known rainbow functions.
PubDate: Mon, 26 Jun 2023 00:00:00 +030
|
Open Access journal
