VeeraKrishna M*, Subba Reddy G and Ali J Chamkha

DOI : 10.32474/MAOPS.2019.03.000158

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In this paper, a probe on the impact of Hall effects on the flow of an oscillatory convective MHD viscous, incompressible, radiating and electrically conducting second-grade fluid in a vertical porous rotating channel in a slip flow regime is carried out. The fluid is assumed to be gray, absorbing and emitting radiation in a non-scattering medium. It is presupposed that MHD flow is laminar and fully developed. In order to use the regular perturbation technique, the solutions of velocity and temperature distributions for the governing flow are obtained. The profiles of velocity and temperature are presented graphically. On the other hand, the skin friction coefficient and the Nusselt number are evaluated numerically and presented in the form of tables, examined and discussed for various values of the flow parameters that govern it...... ReadMore

Guagliardo S*, Schwerdt C, Tanzola D

DOI : 10.32474/MAOPS.2019.03.000155

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The estuary of Bahía Blanca (39° 03′44 ″ S 62° 04′00 ″ W) occupies a large coastal area south of the province of Buenos Aires, Argentina. This area includes urban centers, several industrial parks and deep-water ports. The parasites sensitivity to pollutant and environmental disturbances makes many taxa useful indicators of environmental health and anthropogenic impact. In the present study, the variation in helminth communities of Sympterygia bonapartii was analyzed retrospectively after a period of 18 years. Infra-communities harbored an average of four times more parasites and became less equitable. A gradual increase in organic matter added to the parameters synergy caused by untreated sewage discharges, seems to have been the most important impact on helminth communities, altering the abundance, dominance and eveness. The ..... ReadMore

Wienke BR* and Leary TRO

DOI : 10.32474/MAOPS.2019.03.000154

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The question of deep and shallow decompression stops is interesting and fraught with controversy in diving circles and operations, training, exploration and scientific endeavors. Plus, fraught with some misunderstanding which is understandable as the issues are complex. We accordingly detail a short history of deep and shallow stops, physical aspects, staging differences, diving tests, models, data correlations, data banks, diver statistics and DCS outcomes for diving amplification. Pros and cons of deep stop and shallow stop staging are presented. Misinformation is corrected. Training Agency Standards regarding deep and shallow stops are included. A tabulation of well-known and popular dive computers and software algorithms is given. From diving data, tests, DCS outcomes, data banks and field usage, we conclude that both deep stops and s..... ReadMore

Krasikov E*

DOI : 10.32474/ANOAJ.2019.02.000132

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It is known that in traditional power engineering hydrogen may be one of the first primary source of equipment damage [1]. This problem has high actuality for both nuclear and thermonuclear power engineering [2]. Particularly reactor pressure vessels (RPV) of the WWER-440/230 project was manufactured without stainless cladding that were in contact with primary circuit water and accessible for hydrogen as a product of RPV wall corrosion. Analysis of the combined radiation-hydrogenation embrittlement of the 48TS type vessel steel was performed in [3] where at the mention of the American [4] and own data question concerning unknown source of hydrogen in metal that was irradiated in nuclear reactor in hermetic ampoules (was named as “irradiation-produced hydrogen” (IPH) was raised...... ReadMore

Satheeswaran Thangaraj*

DOI : 10.32474/MAOPS.2019.03.000153

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Despite ocean playing a significant role in global climate, its associated heat energy with atmosphere interaction are not well examined. Here we discuss the overview of energy interaction among sun, ocean and atmosphere and its associated global climate variation...... ReadMore

Oleg Halidullin*

DOI : 10.32474/MAOPS.2019.03.000152

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The earth and atmosphere for millions of years created the animal and plant worlds. Together with them, water quality also developed. In constant motion, water formed a continuous chain of transformation in the bodies of living things and leaves of plants. The harmonious interaction of water, atmosphere and biota has led to the existing balance - the circulation of water through the atmosphere, where the properties of water acquire their initial starting quality for new transformations. Man, in the process of industrialization, turned water into a working tool. He made the water perform unnatural functions for her. Pressure, transportation, spraying, storage, boiling, burning, poisoning of ever increasing volumes of water have led to a change in the quality of water in the atmosphere. Changes in the quality, volume and rate of evaporati..... ReadMore

Patricia Pinheiro Beck Eichler*, Camilla Gomes, Rogério Costa1, Audrey Amorim, Moab Praxedes Gomes and Helenice Vital

DOI : 10.32474/MAOPS.2019.03.000151

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Investigation of foraminifera assemblage through thirtyt-wo surface samples along the transect in Itapitangui river mangrove was done in july / 89. Foraminiferal fauna composed mainly of Ammotium salsum, Arenoparrella Mexicana, Haplophragmoides wilberti, Miliammina fusca and Trochammina inflata occur on mangrove area of Cananeia-Iguape estuary-lagoon system at bottom salinity range from 6 to 30, bottom temperature range from18 -9°C and organic carbon percentage values range from 0.47 to 5.7. The low diversity pattern of foraminiferal population inhabiting the mangrove area of Itapitangui River and the lack of foraminiferal zonation is similar to that encountered in mangroves from all over the world. In July 1989, a survey of foraminifera zoning was carried out by means of thirty-two surface samples along ..... ReadMore

Rajib Biswas*

DOI : 10.32474/MAOPS.2019.02.000150

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Mohammad Amin Makarem, Mohammad Farsi* and Mohammad Reza Rahimpour*

DOI : 10.32474/MAOPS.2019.02.000149

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Ali Jebelli* and Balbir S Dhillon

DOI : 10.32474/MAOPS.2019.02.000148

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Salman M Al Asimi*

DOI : 10.32474/MAOPS.2019.02.000147

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This paper proposes a masterpiece research for honourable researchers, to find out the resultant force caused by sea-waves impact on Earth-beaches. It guides researches to dig out for hidden relations that affect overall performance of Earth environmental systems. It presents some expectations for researchers to confirm, using data and tools of concerned scientific community...... ReadMore

Arpita Saha*, Arpan Mitra, Nabonita Pal, Sufia Zaman and Abhijit Mitra

DOI : 10.32474/MAOPS.2019.02.000146

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A study was conducted on soil texture in 24 stations distributed in the western, eastern and central Indian Sundarbans during 2017. The region is dominated by mangroves although the western sector is more prone to anthropogenic disturbances. It is observed that in all the stations sand exhibited maximum percentage (32% - 55%), followed by silt (25%-32%) and clay (11%-25%)...... ReadMore

Maged Marghany*

DOI : 10.32474/MAOPS.2019.02.000144

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This investigation is the novel study, which is contacted along the Malaysian coastal water to implement the potential of TanDEM-X satellite data for retrieving sea surface current. In this view, the main objective of this investigation is to exam the multichannel MAP height estimator for retrieving sea surface current pattern as a function of the tidal elevation. In-deed, TanDEM-X satellite data have an inordinate prospective for modeling the sea surface parameters, for instance, sea surface current flows and the physical parameters of ocean wave spectra i.e. wavelength and significant wave height. Consequently, TanDEM-X satellite data are the expression of the satellite operation flying with the two satellites in an exactingly measured substance with a consistent baseline between 250 and 500m. In ..... ReadMore

L Bruce Railsback*

DOI : 10.32474/MAOPS.2019.02.000143

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Sidedness of divergence helps resolve a present discordance in our understanding of upwelling in the Southern Ocean, and thus it contributes to the evolving recognition of the oceans� overturning circulation. Divergence can be two-sided (one water mass rises and moves apart in two flows, as is commonly envisioned) or one-sided (one water mass rises and moves away from another that does not move in the opposite direction). Upwelling in the Southern Ocean can be envisioned as a one-sided divergence north of a two-sided divergence. In the more northern one-sided divergence, deep to intermediate waters above or from North Atlantic Deep Water (NADW) upwell into the Antarctica Circumpolar Current (ACC) and move north. In the more southern and two-sided divergence, North Atlantic Deep Water (NADW) upwells and diverges southward into the Antarcti..... ReadMore

Oleh Pundyak*

DOI : 10.32474/MAOPS.2019.02.000142

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A model for overcoming the gravity by moss sperm cells is proposed here. It is based on the assuming that the tip of constantly coiled sperm cell slips on surface of moss tissue, to which the cell is pressed by tensile strength of water. This tip and the cell mass center don’t coincide. Therefore, there appears a torque expressing gravitaxis of physical nature. In puddles the cells can successfully overcome the gravity detecting thermal fluctuations of their velocities, which expresses gravikinesis of physical nature.It can considerably improve fertilization of mosses...... ReadMore

George Kimbowa and Khaldoon A Mourad*

DOI : 10.32474/MAOPS.2019.02.000141

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The development of great dams and hydropower plants increases power supply and access. However, the process is considered a threat to livelihoods, ecosystem and biodiversity because in most cases it brings about human displacement and natural resources degradation. This paper seeks to assess the development of the Bujagali Hydropower Plant in Uganda (BHP) and its compliance with IWRM principles based on water knowledges, societal values, and inter-disciplinary approach. The paper develops a set of strategic interventions for the dam and the BHP based on SWOT analysis, XLRM framework, Multi-sectoral and interdisciplinary development approach, and sustainable management. These measures are deemed socially and ecologically acceptable by all stakeholders including the cultur..... ReadMore

Abdoreza Sabet Ahd, Hesameddin Mehrfar* and Mina Mohammadi Pasand

DOI : 10.32474/MAOPS.2019.02.000140

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Always oceanographers pay attention to layer structure in the sea environment. Creation of layer structures is because of some phenomenons like double diffusion, internal waves, turbulence modular mixing. In this paper with examination of vertical structure of temperature, salinity and density between Persian Gulf and Oman Sea in different seasons, layer structures appear clearly. Also, countors of the same physical parameters show the existence of regular structure which prove internal waves resulting from the Persian Gulf and flow into the Oman Sea. The exchange flow through the Stait of Hormus results from horizontal density gradient between the Persian Gulf and Oman Sea. In winter the density ratio ()Rρ in this nearshore region is about 0.7 and in offshore region is 0.2. this shows that in this area, double diffusion forms layer stru..... ReadMore

Pundyak Oleh*

DOI : 10.32474/MAOPS.2019.02.000139

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A model for overcoming the gravity by cells of wide range of motile sea-plankton microorganisms without gravity perception or antipredator behavior is proposed here. It is based on the assuming that the cells are able to detect thermal fluctuations of their velocities. In our model the cell locomotion force linearly depends on the cell velocity fluctuations causing especial type of gravikinesis. According to equations of the cell movement, sedimentation of the organisms may be considerably overcome...... ReadMore

BT Marinyuk*

DOI : 10.32474/MAOPS.2018.02.000138

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Cryogenics is an applying science which deals with low temperatures. Ed this branch of engineering is of a great importance in the field of sea preservation from different substances, which are not friendly with sea environment...... ReadMore

Vladimir Vigdergauz*

DOI : 10.32474/MAOPS.2018.02.000137

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Hydrolytic disproportionation of carbon (HDC) was proposed as an essential reaction in connection with coal mine methane formation in catastrophic events [1,2]. The calculated Gibbs free energy change of HDC or direct reduction of hydrogen from its oxide by coal in the form of carbon is 29.20 kJ/mol of methane or 14.60kJ/mol of carbon...... ReadMore