علوم زیستی دریا
Davar Rezaeimanesh; Parisa Amiri Farsani
Abstract
Hemostatic balance is a dynamic balance between the process of blood clotting and the mechanism of blood clot dissolution. The purpose of this endeavor was to investigate the effect of an 8-week selected aquatic aerobic training period on fibrinolytic indexes in retired athletes. 20 healthy male volunteers ...
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Hemostatic balance is a dynamic balance between the process of blood clotting and the mechanism of blood clot dissolution. The purpose of this endeavor was to investigate the effect of an 8-week selected aquatic aerobic training period on fibrinolytic indexes in retired athletes. 20 healthy male volunteers were randomly divided into experimental (n=10) and control groups (n=10).Both groups were similar regarding their age and body mass indexes. The training program for the experimental group included three weekly sessions of aquatic aerobic exercise for a period of eight weeks with an intensity of 55-70% of maximal heart rate. The control group had no participation in any regular training program. The blood samples were analyzed for t-PA and PAI-1 antigens, t-PA/PAI-1 complex and D-dimer. Independent and dependent t-tests were implemented to compare parameter averages at α=0.05.The results showed that in the experimental group, t-PA (P=0.001) and t-PA/PAI-1(P=0.003) levels increased significantly while there was a significant decrease in PAI-1(P=0.001) and D-dimer (P=0.001) levels. The comparison of the differences between the two groups showed that the changes in t-PA (P=0.022) and PAI-1(P=0.038) levels was significant. The results of this study showed that aquatic aerobic training can prevent thrombosis and sudden heart disease in retired athletes.
علوم انسانی دریا
Peyman Derakhshan Nik; Rashid Zolfaghari Zafarani; Alireza Afsharnejad
Abstract
Marine Transport terms in competition of presenting safer services to its stake holders. The cargo and ship owners are considering the issue as their main concerns. Implementing the ISM Code is a way of achieving and improving mentioned safety goals. Implementation of these goals, would be in hands ...
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Marine Transport terms in competition of presenting safer services to its stake holders. The cargo and ship owners are considering the issue as their main concerns. Implementing the ISM Code is a way of achieving and improving mentioned safety goals. Implementation of these goals, would be in hands of correct operation of the ship’s masters and their crews. Management and responsibility of implementation of the ISM Code would be on shoulder of the ship masters and how they transfer the concept and importance of the Code to their crews. The role of a master is to intermediate between the shipping company and the seafarer and the ship as an individual. Appropriate management of inter relation plays a sensitive role on implementing the ISM Code. In line with the above, there are five categories for implementation of the code which, the following should be taken into consideration; human resource management on board of vessel, training of seafarers, the role of safety management in shipping companies and safety and security matters. These data collection has been carried out from a group of Iranian Ship masters as expertise’s, and the answers were obtained for the analysis. The role of motivation in improving the implementing of the code has been considered as a challenging point. In the second part of the research, notably the reliability of each part and motivation theory, has been taken into the consideration. To analyze the collected data, the SPSS 16 and AMOS software’s were utilized. The collected statistics showed that implementing of ISM Code by the Iranian seafarers is realized and the calculated amount of chi-square and the degree of freedom (df) indicates the virtually of the research. Therefore, implementation of the ISM Code along with motivation would have a positive effect in the safety on board of the ships and would result in the safety of navigation for Iranian seafarers.
علوم انسانی دریا
Mahnaz Rashidi; Ali Mashhadi
Abstract
Mnemiopsis leidyi in Caspian Sea is an example of invasive alien species that was moved to Caspian Sea by ballast water of ships through Volga- Don canal in the 1990th decade. This Plankton-eating species put many of creatures of Caspian Sea such as Common Kilkas, Sturgeons and Caspian seals at risk ...
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Mnemiopsis leidyi in Caspian Sea is an example of invasive alien species that was moved to Caspian Sea by ballast water of ships through Volga- Don canal in the 1990th decade. This Plankton-eating species put many of creatures of Caspian Sea such as Common Kilkas, Sturgeons and Caspian seals at risk of distinction by disrupting the food chain. Due to the hard environmental and economic impacts of invasive alien species, the main question of this research is what obligations does international law impose on the Caspian coastal states to manage such species? In response, by using descriptive- analytical method and library resources, it was concluded that the Islamic Republic of Iran and other countries along Caspian Sea have become members of some global and regional environmental agreements which explicitly or implicitly, assigns them obligations on prevention, control and elimination of alien invasive species. International customary rules and general legal principles also impose obligations on these states to take preventive, precautionary and control measures. Violations any of primary obligations by countries or causing damage, can lead to the international responsibility of offending state or causing damage state. Therefore, international law is not challenged about existence of binding rules regarding the management of invasive alien species in Caspian Sea, but effective implementation of these rules requires further cooperation between member states.
علوم انسانی دریا
Hamed shafiabadi; Homayoun yousefi Yousefi; Mohammadamin Kuhbor
Abstract
The purpose of this study was to investigate and rank the factors affecting the development of maritime travel and tourism in the Persian Gulf terminus of Khorramshahr port. In previous studies, despite investigating other types of tourism, there has been no study on maritime tourism and in particular ...
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The purpose of this study was to investigate and rank the factors affecting the development of maritime travel and tourism in the Persian Gulf terminus of Khorramshahr port. In previous studies, despite investigating other types of tourism, there has been no study on maritime tourism and in particular on maritime travel and tourism at the Persian Gulf terminus of Khorramshahr port. Despite the realization of the research goal, while increasing the revenue of the Khuzestan ports and maritime organization, it will boost job opportunities in the region, otherwise the potential loss of the region will result in the loss of capital in the maritime sector. The method of this research is based on the nature of exploratory blend (qualitative-quantitative approach), which focuses on qualitative research. The quantitative part of this research is related to the analytical method based on Analytic hierarchy process (AHP). In addition, SPSS22 and Expert choice11 software were used for this purpose. Based on the results, the infrastructure dimension with the final weight of 0.528 first rank and the service, economic and cultural services with the final weight of 0.243, 0.142 and 0.086 respectively ranked second, third and fourth. Among the components, the construction of residential and recreational facilities, the provision of patrols and sea tours, banking facilities for the private sector and media advertising, respectively, with the final weight of 0.431, 0.432, 0.488 and 0.559, were among the components of each dimension as the first rank.
علوم زیستی دریا
Khatereh Mehrabani; Mohammad Khosravizadeh; Vahid Yavari; Seyed Mehdi Hosseini; Omid Beyraghdar Kashkooli
Abstract
The aim of this study was to estimate the amount and species composition of discards in bottom trawl fisheries in the Bosif fishing ground in the coastal waters of Khuzestan. Furthermore, the biological parameters of discarded species were assessed. Specimens were collected from commercial catch data ...
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The aim of this study was to estimate the amount and species composition of discards in bottom trawl fisheries in the Bosif fishing ground in the coastal waters of Khuzestan. Furthermore, the biological parameters of discarded species were assessed. Specimens were collected from commercial catch data of trawl vessels in three seasons, autumn and winter 2017 and summer 2018. The results showed that discarded samples included 33 species from 28 families. Orangefin Pony fish and striped piggy species were the most frequent species in this study. The results also showed that the mean length of most of the discards species was below 30 centimeters. The amount of discards per unit of catching effort was 57.33±9.87, 27.50±16.64 and 32.33±7.50 in the autumn, winter and summer seasons, respectively. The catch per surface area in autumn, winter and summer were 2.77 ± 0.064, 0. 73 ±0.39 and 1.73 ± 0.44 kg/nm2, respectively. The results showed that CPUE and CPUA in winter were significantly higher than those in autumn and summer (p<0.05). In general, the results of this study represent high fishing pressure on ecologically important species in Bosif fishing ground especially in their critical life cycle which may affect local ecosystem structure and function in future.
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