Investigation Of The Parameters Affecting Crankshaft And Rotor Interference Fit

In recent years small sized compressors have been introduced to the market, by reducing the height, length and width of the compressor. This improvement allows refrigerator’s compressor housing area become smaller; hence cabinet volume of the refrigerator increases. One of the parameters affecting the height of the compressor is the length of interference fit between crankshaft and rotor which is also critical to prevent split off the rotor from crankshaft during operational life. In this study theoretical model is suggested for crankshaft-rotor interference fit phenomenon and it is verified by experimental study. In addition, finite element solution is used for simulation of press fit forces. Using this model, parametric study is carried out to determine the minimum possible interference fit length for a given compressor model

Determination of the inhibitory effects of microdiets used in routine commercial feeding protocols on protease activities of Argyrosomus regius (Asso, 1801) larva

The aim of this study was to determine the inhibitory effects of feed ingredients on protease activities of Argyrosomus regius larvae using in vitro techniques. A. regius larvae fed on a commercial feeding procedure were sampled thirteen times, during the sampling period (from 3 to 32 days after hatching (DAH)). The differences observed in protease activities of meagre larvae during the sampling period were statistically significant (p<0.05). The lowest and highest protease activities of meagre larvae were 5.95±0.6 U/mg protein (15 DAH) and 211.21±12.56 U/mg protein (7 DAH), respectively. The fluctuations observed in protease activities of A. regius larvae were between 10 DAH and 32 DAH. Commercial diets such as Orange Start-S (100-200µ), Orange Start-L (200-300µ), Orange Nurse-XS (300-500µ), Orange Grow-S (300-500µ) and Orange Grow-L (500-800µ) caused the inhibitions on protease activities in meagre larvae to range from 16 to 32 DAH. The results point to the inadequacy of commercial diets such as Orange Grow-S, Orange Grow-L and suitability of Orange Start-S, Orange Start-L, Orange Nurse-XS for feeding meagre larvae during the weaning stage. For the mass production of quality juveniles, future studies should take into account the inhibitory effects of commercial diets and feed ingredients before the manufacturing process. A similar approach may be used to determine the most suitable commercial diets for use during the weaning stages of marine fish larvae to obtain the best growth performance and survival

Existence of Wormholes in f(G)f(\mathcal{G}) Gravity using Symmetries

The current study examines the geometry of static wormholes with anisotropic matter distribution in context of modified $f(\mathcal{G})$ gravity. We consider the well known Noether and conformal symmetries, which help in investigating wormholes in $f(\mathcal{G})$ gravity. For this purpose, we develop symmetry generators associated with conserved quantities by taking into consideration the $f(\mathcal{G})$ gravity model. Moreover, we use the conservation relationship gained from the classical Noether method and conformal Killing symmetries to develop the metric potential. These symmetries provide a strong mathematical background to investigate wormhole solutions by incorporating some suitable initial conditions. The obtained conserved quantity performs a significant role in defining the essential physical characteristics of the shape-function and energy conditions. Further, we also describe the stability of obtained wormholes solutions by employing the equilibrium condition in modified $f(\mathcal{G})$ gravity. It is observed from graphical representation of obtained wormhole solutions that Noether and conformal Killing symmetries provide the results with physically accepted patterns.Comment: 10 pages, 7 figure

A comparative study of efficacy, safety and compliance of oral iron versus intravenous iron sucrose in treatment of iron deficiency anaemia of pregnancy

Background: Iron deficiency anemia is the most common form of anemia and nutritional disorder worldwide. Oral iron therapy and blood transfusion has many drawbacks like noncompliance and risk of transmittable infections and transfusion reaction. The modern alternative therapy is treatment with intravenous iron. Present study compares the efficacy, safety and tolerability between intravenous iron sucrose and oral iron in iron deficiency anemia during 20-36 weeks of pregnancy.Methods: It was a randomized controlled study between December 2017 to September 2019. 200 patients attending antenatal OPD in Al Ameen Medical College, with haemoglobin levels between 7-9.9 gm/dl and serum ferritin of <15 ng/ml were enrolled. In intravenous group, 200 mg iron sucrose in 100ml normal saline was infused alternate day till the required dose was met. The oral group received 200 mg of oral iron ascorbate along with folic acid 1.5 mg per day for 6 weeks.  Treatment efficacy was assessed by Hb and serum ferritin after 3 and 6 weeks.Results: Out of 200 patients, an increase in Hb was observed in both groups, rising from 9.7 g/dl to 10.3 g/dl and 10.9 g/dl after 3 weeks and 6 weeks respectively in oral group and from 8.6 g/dl to 9.8 g/dl and 10.8 g/dl after 3 weeks and 6 weeks respectively in intravenous group. Similar results were seen in ferritin levels. Rise in Hb and ferritin levels were greater in intravenous group than in oral group.Conclusions: Intravenous iron sucrose appears to be a better treatment option in comparison with oral iron, without serious side effects, better compliance and improved efficacy in correction of anaemia of pregnancy

Maneuvering humidity to augment response of phosphine against adult and egg stages of Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelidae)

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Developing an ESP-Based Language Learning Environment to Help Students Improve Critical Thinking Skills in Written Output

In recent years, as a result of both research discoveries in the fields of foreign language acquisition and learning, the concept of teaching and learning has undergone a significant transformation. English for Specific Purposes (ESP) is a learner-centered approach to teaching English as a foreign language that emphasizes developing communicative proficiency in niche industries such agronomy, commerce, academia, accountancy, education, engineering, and information technology. This concept of English-for-Teaching as a restricted form of ESP for the classroom builds on the knowledge that instructors already have about teaching while also introducing and validating specific classroom terminology. When students interact and cooperate with one another, ESP practice emerges naturally in a language learning setting. Two major aspects that ESP highlights are the growth of dialogical interaction and the establishment of ecologically complete learning environments. In this essay, we create an ESP to aid students in the development of their critical thinking (CT) abilities in written output. We combine the Synergy model, Brain-based learning, and the Flipped Classroom models to create an ESP environment. Students CT abilities and academic success served as the studys criteria. The Course Satisfaction Questionnaire and placement exams were used to obtain the statistical data. Using the Cronbach Alpha coefficient (CAC) and Spearman correlation coefficient, the test on CT data was interpreted, and the combined data was examined using SPSS (V 26.0). By immersing students in problem-solving- based learning (PBL), this paradigm helps students develop their CT skills. It also helps students achieve academically by elevating their sense of accountability for learning outcomes and promoting the use of a variety of learning strategies