Abstract:In this study, were investigated histological investigation of gonadal development of the red mullet (Mullus barbatus L., 1758) in the Gulf of Antalya. The specimens (n=890) were captured monthly from their natural sites. The gonads of them were dissected as soon as and fixed in 10 % neutral buffered formaldehyde. They were embedded in paraffin blocks after several histo-chemical processes. Sectioned tissue samples at 5µm were stained by Haematoxylin-eosin and Masson Trichrome techniques. Histologically female individuals were found to be in immature female, chromatin-nucleolus, perinucleolus, cortical alveoli, vitellogenesis, maturity and post-ovulation stages. Male individuals were found in spermatogenesis, spermiogenesis, spermiation, sperm release and resting stages. Evaluated from the data was determined, these fishes reproductive from may to semptember, egg diameters between 31,00±15 and 428,00±40 µm.
Abstract:Modern theories of economic growth view human capital as one of its key factors, since it is human capital that can provide economic growth not only by increasing labor productivity, but also through the generation and implementation of new ideas and innovations, in addition, it facilitates their perception and dissemination.\nThe methodological basis of the research is basically a dialectical and systematic approach to the analysis of the facts in question. The research is based on a wide use of methods of analysis and synthesis, factor analysis and statistical analysis.\nThe result is the calculation of the consolidated index of human capital management in the regions of the Russian Federation and the development of a program for the development of the intellectual and innovative potential of human capital.\nThe obtained results allow complementing existing studies of human capital in terms of interaction with the intellectual and innovative potential. The practical importance of the study is to formulate recommendations for improving the management of human capital in the region and the development in it of the prerequisites and factors necessary for innovative and scientific activities.\nFor most regions of Russia, it is necessary to develop and modernize existing programs for the development of human capital, in order to improve the economic potential in innovative areas, taking into account the specifics of each region. For Tatarstan, emphasis should be laid on the preparation of innovative programs for territorial clusters, the territory of advanced development and special economic zones, the creation and development of which is laid down in the Tatarstan strategic development program until 2030, with the use of the main factor – human capital.
Abstract:The role of pumpkin seed oil (PSO) against the nicotine (Nc) induced micronucleated polychromatic erythrocytes (Mn-PCEs), oxidative stress in hepatic and renal tissues of mice are the aims of the present work. The albino mice (40 male) were classified into four groups; were continuously and carefully observed for15 consecutive days. These four grouped mice were treated as the control group; given only distilled water, the group received orally 4 ml/Kg of PSO daily and groups received 16 mg/Kg Nc for ten consecutive days. The fourth group treated like group two and begin treated with 16 mg/Kg Nc at 6th day along with PSO. The consequence of the treatment results as Nc significantly increased the incidence of Mn-PCEs and decreased the ratio of polychromatic erythrocytes to normochromatic erythrocytes (PCEs/NCEs). Also, Nc treatment significantly elevated hepatic and renal lipid peroxidation and decreased intracellular glutathione in both tissues accompanied with down regulated in the expression of antioxidant genes. While pre-treatment with PSO, and along with Nc, rendered protection against Nc induced oxidative stress and cytotoxicity as demonstrated by inhibiting the frequency of Mn-PCEs induction and lipid peroxidation concentration as well as significantly improved intracellular glutathione and modulated the expression of antioxidant genes. It can be concluded that PSO exhibited a protective role against hepatic, renal and bone marrow genotoxicity induced by nicotine in male mice.
Abstract:The centralized traditional power grid leads to national power blackout resulting increase in research for alternate solutions. The solar photovoltaic is connected with module integrated converter (MIC) is the efficient way of increasing the performance in nowa-days. The modelling and analysis of such a microconverter with various Maximum Power Point Tracking (MPPT) techniques is simulated with dynamic simulation software in this work. The MPPT algorithm is applied on the SEPIC converter to extract the maximum and optimal power from the panel. The objective of the proposed research is to convert the raw solar energy from the PV cell and supplied to the load with high efficiency and high power quality. The converter includes low voltage stress on the semiconductor devices and simplicity of design. The switching losses are also reduced by replacing with single MOSFET in SEPIC converter. Hence the triggering components and commutation components are reduced while using a MOSFET and therefore the conduction losses are reduced. The converter is analysed with different modern MPPT techniques and this paper concludes optimal MPPT for the converter to extract the maximum power. Finally, the converter is designed for the rating of 80W and optimal MPPT is experimentally verified on the converter.
Abstract:The aim of this research is to determine and analyze the factors affecting firm value on the companies listed on Indonesia Stock Exchange. Firm value was used as the dependent variable and was represented by Tobin’s Q. On the other hand, the independent variables consisted of profitability (ROA), capital structure (DER), firm size, growth opportunity, tangibility, and liquidity (current ratio). The population used was all 45 companies listed on LQ-45 during February 2016. There were 37 companies included as the sample which was obtained using purposive sampling. The research period was from the year of 2012 to 2015. The data analysis technique used was linear regression. The research result showed that significant relationship with firm value only exist on two research variables which are profitability and capital structure. It appears that firm size, growth opportunity, tangibility, and liquidity do not have significant result.
Abstract:Waste recycling and material recovery is a green approach for dealing with the emergent issue of solid waste in urban areas. Just like other developing countries, waste pickers (informal) are essential part of solid waste management system and are acting parallel to formal waste management entities in Pakistan. However, their role always remained independent and hidden and never been appreciated. This study was designed to provide evidence based situation analysis of current role of waste pickers in waste management system in the Gujranwala city of Pakistan. The findings would facilitate the authorities to own the informal sector and integrate their role into an existing formal solid waste management system as a win-win situation for achieving the objective of improved society, economy and environmental health. For this study, a Waste Picker Survey was carried out to understand the existing process of recycling mechanism in the city. The results revealed that total recovery amount by 20 waste pickers (informal entities) within Gujranwala City is 1,640 kg/day, which is greater than that of 20 waste pickers at the Gondlanwala disposal site, i.e., 1,100 kg/day. The average recovery amount per waste picker within the city is 82 kg/day; whereas, at the Gondlanwala disposal site the recovery amount per waste picker is 55 kg/day that means 60% recyclable material is picked within the city and only 40% reach the disposal site. This high amount of recyclable materials being picked within the city reveals the important role of waste pickers in waste management system of the city.
Abstract:Concrete pavements are preferred over bituminous pavement due to its low life cycle cost, high durability and low maintenance. There are many literatures like PCA (1984), IRC 58 (2015), AASHTO (1993), ACI 395, IRC SP 62 (2014) available for the design of jointed plain concrete pavement (JPCP). However, critical edge stress calculation vary depending on assumptions of the specific guideline. Performance of concrete pavement depends on parameters like subgrade stiffness, size of slab, thickness of slab, traffic and environmental loads, configuration and location of traffic load, repetition of load, properties of concrete, load transfer mechanism at joints, etc. It is necessary to understand the effect of different parameters on critical edge stress while designing JPCP. In this paper a study is carried out by preparing realistic finite element models for concrete pavement slab subjected to traffic as well as temperature differential load. Practically possible variations in different parameters are considered which affects the design, and few recommendations for better design are suggested.
Abstract:In general, various methods and tools had been developed in order to melt and pour the reactive metals like titanium under vacuum. The apparatus and system which are used are very costlier and uneconomical. As for this paper, the main objective is to present preliminary design of the setup which shall be used in melting and pouring the molten metal under the inert atmosphere and vacuum system. Currently the most suitable method of titanium is to use induction skull melting(ISM) in which the alloy is melted in water cooled segmented copper crucible. Although this enhances up the metallurgical properties satisfactory, it has a poor efficiency and is therefore costly to use. In this paper, it is proposed to melt the titanium alloy with argon shielding. Prior to that the experimental setup required for the argon gas shielding is fabricated in house and the heating medium used is induction melting with the help of existing induction furnace. The complete set up is redesigned and modified with new conceptual design for titanium melting with bottom pouring crucible mechanism. A promising new technique for direct melting and pouring cobalt chromium/titanium alloy for medical implants emerged from this project. Our research demonstrated the feasibility of direct melting and casting of cobalt chromium /Titanium alloy (Ti6AlV4) vacuum technology.
Abstract:Fruits of Leuchtenbergia principis were collected from the botanical garden of the Facultad de Ciencias Biológicas de la UJED, with the objective of evaluating the effect of temperature and storage time on the viability of seeds of the \"Cactus agave\". The first batch of seeds was collected in September 2013, and the second batch of seeds in September 2014. The objective was to evaluate the viability of seeds of the \"Cactus agave\", affected by the storage time and to evaluate the effect of the temperature over its longevity. The seeds were placed in Petri dishes, using sand as a substrate. The five boxes (considered as five repetitions), were placed in a germinating chamber with a photoperiod of 12 light hours / 12 dark hours, under a constant temperature of 25 ° C. The daily germination record of the seeds was taken for 30 days, determining the percentage of germination at the end of the period, as well as the germination speed (t50) calculated as the number of days elapsed until obtaining half of the seeds that germinated in 30 days. No significant differences were found in the percentage of germination according to the storage time, with 91% germination of the seeds collected in September 2013 and 89% germination of the seeds collected in September 2014. It is important to extend the experiment with more years of storage of the seeds to determine the time and conditions in which stored seeds lose viability.
Abstract:Silver nanoparticles (SNP) are used in a variety of consumer and biomedical products because of its antibacterial activity. These applications result in an increment human exposition for systemic toxicity of SNP. The present study evaluated clinical, hematology and histopathological alterations in rats exposed to different sizes and concentrations of intraperitoneally administrated SNP. Different groups of Wistar rats were intraperitoneally injected using two sizes (7.1 and 17.5 nm) and three different concentrations of SNP (133.75, 535 and 1070 µg/mL) for 0, 15 and 30 days. General clinical conditions, clinical chemistry, hematology and histopathology tests were evaluated. All SNP samples were well tolerated for all rats. Clinical chemistry and hematology values were associated with liver and renal abnormalities (p˂0.05). Histopathology analysis revealed the presence of chronic inflammatory infiltrate, lymphoid follicles (not reported previously) and nodular inflammatory infiltrate in stomach, lungs, liver and kidneys. Concentrations and the size of SNP were associated to clinical chemistry, hematology and histopathology findings (p<0.05). These results provide in vivo evidence of toxic effect of SNP in rats. The administration of intraperitoneal injected SNP might remarkably induce toxic effects in the structure and function of specific organs.