Adama University

About: Adama University is a education organization based out in Nazrēt, Ethiopia. It is known for research contribution in the topics: Population & Adsorption. The organization has 840 authors who have published 1010 publications receiving 5547 citations. The organization is also known as: Adama Science and Technology University & ቴክኖሎጂ ዩኒቨርሲቲ, አዳማ ሳይንስና ቴክኖሎጂ ዩኒቨርሲቲ.

Some fixed point results of generalized [Formula: see text]-contractive mappings in ordered b-metric spaces.

Abstract: The aim of this paper is to establish some fixed point, coincidence point and, coupled coincidence and coupled common fixed point results for generalized $$(\phi , \psi )$$ -contractive mappings in partially ordered b-metric spaces. Our results generalize, extend and unify most of the fundamental metrical fixed point theorems in the existing literature. Few examples are illustrated to justify our results. The existence and uniqueness theorems for a fixed point and coincidence point, coupled coincidence point and coupled common fixed points for two mappings satisfying generalized $$(\phi , \psi )$$ -contractive conditions in complete partially ordered b-metric spaces are proved. These results generalize several comparable results in the existing literature.

Production floor layout using systematic layout planning in Can manufacturing company

Abstract: This paper presents an analysis on a production shop floor layout of a Can manufacturing company and the application of a systematic layout planning (SLP) procedure as an approach to solve the production shop floor layout problem. The relationship between machines, operation activities and material flow are used to determine the optimal location of each machine. SLP technique has been employed to design the two alternative production shop floor layouts and compare the performance between new layout and present layout in terms of material flow distance, traveling time, and traveling cost. The existing production process was inefficient, showing bottlenecks. The alternative layouts were developed based on minimum distance traveled between each pair of machine. It improved the company existing layout by reduced total movement traveled in production for material handling. The measurements covered the actual sizes of the layout and machines, activities between machines, distance between machines, and material flow between machines in the company. The proposed procedure is illustrated to be a viable approach for solving production shop floor layout design problem through a real-world case study. From the proposed two alternative layouts which are more economical, distance of the production flow can be shortened from 389.7m to 311.2m or 360.6m. The traveling time can be reduced from 901sec. to 750sec. and traveling cost can be reduced from 3.17 Birr to 2.98 or 2.19 Birr per each travel resulting increase in productivity.

Phytochemistry, Pharmacology, and Nutraceutical Profile of Carissa Species: An Updated Review.

Abstract: Carissa, a genus of the Apocynaceae family, consists of evergreen species, such as shrubs as well as small trees that are native to Asia, Africa, and Oceania's subtropical and tropical regions. Most of the Carissa species are traditionally used to treat various diseases, such as chest pain, headaches, gonorrhoea, rheumatism, syphilis, oedema, rabies, stomach pain, hepatitis, cardiac diseases, and asthma. The pharmacological studies on Carissa species revealed its antioxidant, antimicrobial, anticancer, cardioprotective, antipyretic, analgesic, wound healing, anticonvulsant, antiarthritic, adaptogenic, anti-inflammatory, and antidiabetic activities, thus validating its use in indigenous medicine systems. The review article summarised the comprehensive literature available, including morphology, indigenous uses, bioactive composition, nutraceutical, and pharmacological activities of Carissa species. A total of 155 research papers were cited in this review article. The Carissa fruits are rich in dietary fibre, lipids, proteins, carbohydrates, vitamin C, and macro- and micro-elements. A total of 121 compounds (35 polyphenols (flavonoids and phenolic acids), 30 lignans, 41 terpenoids, 7 steroids, 2 coumarins, and 6 cardiac glycosides) have been extracted from C. spinarum, C. carandas, and C. macrocarpa. Among all chemical constituents, lupeol, carissol, naringin, carisssone, scopoletin, carissaeduloside A, D, J, carandinol, sarhamnoloside, carissanol, olivil, carinol, 3β-hydroxyolean-11-en-28,13β-oilde, ursolic acid, and carissone are the key bioactive constituents responsible for pharmacological activities of genus Carissa. The gathered ethnopharmacological information in the review will help to understand the therapeutic relevance of Carissa as well as paving a way for further exploration in the discovery of novel plant-based drugs.

Groundwater Potential Mapping Using SWAT and GIS-Based Multi-Criteria Decision Analysis

Abstract: In several parts of the world, groundwater potential information gap limits the development and management of the resource GIS-based multi-criteria decision analysis (MCDA) plays an important role in this regard This work presents the groundwater potential mapping in a data-scarce region of Main Ethiopian Rift (MER) using Soil and Water Assessment Tool (SWAT) and GIS-based MCDA SWAT was used to model the spatiotemporal variation of groundwater recharge The calibration and validation results show the applicability of the model in the study area The estimated monthly average recharge varies from 278–164 mm The recharge, geomorphology, lithology, soil, land use/land-cover, and DEM derived topographic characteristics were analyzed using GIS-based MCDA to evaluate the groundwater potential The result is classified into low, moderate, and high zones and validated using the wells and springs information available in the region More than 61% of the area has moderate groundwater potential and less than 22% of the area has high groundwater potential