54 research outputs found

    Challenges facing Iranian social security in the path of sustainable development, causes and providing some solutions

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    Following economic, social, political and cultural changes and the spread of social phenomena such as poverty, unemployment, increasing population of the elderly and disabled, governments have taken on new responsibilities towards their citizens and their scope of operation has expanded. (Ghaffari, 2017). In this direction, due to the mentioned changes, several challenges have been faced on social security in relation to the efficient establishment of the social security system. Therefore, the present study, in response to the question of what are the most important challenges of social security in the implementation of sustainable development programs, intends to provide appropriate solutions in this area by analyzing and analyzing the causes of challenges facing the Social Security Organization. This research is a descriptive-comparative type and in addition to interviews with experts, professors and individuals who have researched in the field of social security, as well as a number of managers and experts in the field of social security, using the library method. The statistical population includes existing documents in the field of social security at the domestic and international levels, which have been dictated by reference organizations such as the International Social Security Association (ISSA), International Labour Organization (ILO) and the World Bank in this field. Content analysis method has been used for data analysis. The challenges have been enumerated by adapting the current state of social security to its desired state based on global guidelines, models, and systems. Then, the obtained information was tested using the questionnaire with a reliability coefficient of 0.7 to examine and comment on the experts Delphi test and was analyzed using SPSS software. Findings indicate that social security in Iran is far from global standards and models and is struggling with micro and macro challenges. Evidence and research results showed that the most important reasons for the existing challenges should be pursued in policies, regulations and also in the field of implementation. It also seems that explaining the role of the government in the field of social security is a missing link that ignoring it will jeopardize any orientation in the field of social security and it is necessary to pay attention to macro-planning in this area. &nbsp

    Prevention of acute ammonia toxicity in beluga, Huso huso, using natural zeolite

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    This study was accomplished to examine the efficiency of natural zeolite in preventing acute toxicity of total ammonia to Huso huso. The study was performed using Water Static Method in 96 hours. Fish averaged 46 ± 5 g in weight and 22 ± 4 cm in total length were exposed to four different concentrations (15, 30, 50, 75 mgL-1) of ammonia and a group was considered as control. Under stable condition, the lethal concentration of ionized ammonia was 75 mgL-1 in 96 hours. In the lethal concentration of total ammonia, different amounts of 5, 10, 15 g.L-1 granulated clinoptilolite zeolite were used. Results indicated significant differences between treatments and control (p<0.05). By increasing Clinoptilolite zeolite in each treatment, the survival rate of fish also increased significantly (p<0.05). In lethal concentration of ammonia, the use of 15 g.L-1 zeolite could prevent the mortality rate. Histopathological findings showed that major lesions in gill filaments included hemorrhage, hyperemia, hyperplasia, epithelial cells necrosis. There were hemorrhage, hyperemia, degenerated tubules of kidney, expansion of Bowman's capsule in kidney and hepatocytes necrosis in liver

    Effect of copper sulphate on behavioral and histopathological changes in roach, Rutilus rutilus caspicus

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    The research was accomplished in order to study behavioral and histopathological effects of Copper on Rutilus rutilus caspicus under experimental condition. The study was performed using Water Static Method during 96 hours. 15 fish with averaged weight 2±0.5 g in weight were encountered to different concentrations (0, 0.1, 0.2, 0.3, 0.4 mg/l) of Copper. A group of fish was considered as control. Under stable condition and aeration, the lethal concentration was 0.4 mg/l. Results indicated that there was significant differences between treatments when copper concentration increased (p<0.05). It was found that in the high concentration of Copper nominal signs of toxicity such as convulsion, air gulping and flared operculum were observed. Histopathological sings were hyperplasia, edema, hyperemia, hemorrhage, expansion of Bowman’s capsule and hepatocytes necrosis. In control group no lesion was observed

    Use of Bacillus probiotics for immune responses and intestinal microflora of white leg shrimp Litopenaeus vannamei (Boone, 1931) post larvae

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    The effect of dietary containing of Bacillus subtilis and Bacillus licheniformis in three groups including commercial, commercial-indigenous and indigenous was investigated on the immune parameters (glucose, albumin, total protein, lysozyme, cortisol, immunoglobulin M (IgM)) and the intestinal flora of white leg shrimp (Litopenaeus vannamei) post larvae. The shrimp were fed for 60 days with four different diets: control (without probiotics), diet T1 supplemented with 1.5×106 CFU g-1 commercial probiotic, diet T2 with 1.5×106 CFU g-1 commercial-indigenous probiotic, diet T3 with 1.5×106 CFU g-1 indigenous probiotic. At the end of experimental period, the levels of biochemical parameters (glucose, total protein, lysozyme, cortisol, IgM) of shrimp fed probiotic diets were significantly higher than in those shrimps fed the control diet for 60 days. However, albumin concentrations showed no significant difference between the experimental treatments and the control, but increased by 1.19, 1.15 and 1.14 after 60 days of feeding with diets T1, T2 and T3, respectively. Likewise, population density of Bacillus bacteria counted in digestive tract of shrimps treated with probiotic were significantly higher than the control group. Results of this study indicated that the addition of probiotic bacilli can improve immune parameters and modulates intestinal microbiota of shrimp (L. vannamei) post larvae

    Social security insurance model in Iran with a sustainable development approach: A comparative study of selected countries, Iran, Turkey and Denmark

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    The social security system in any country is a mirror of the development and the level of welfare of that society, and sustainable development in any country has a direct relationship with the quantity and quality of social security services. Given the initial establishment of the social security system in almost all countries, as well as Iran, the main challenge in this area can be considered the development of quality, quantity and services in a way that is able to meet the needs of society. (Khaleghparast, Rasekh, Naimi, 2017). Therefore, this study intends to identify the gaps between the current situation and the desired situation, by presenting applications in the form of a proposed model, to design the desired social security system according to the characteristics and conditions prevailing in society and its final destination to determine the development process of the country. This study is a descriptive-comparative study and has been done in several stages. The findings indicate that there is a significant gap between the management, governance and establishment of the social security system in Iran and the sample countries, especially Denmark. In countries that have succeeded in establishing the social security system, they have paid special attention to the three indicators of development and empowerment (risk management and realization of prevention levels), macro-planning and how to provide services, and by recreating the position of government in the security system, as well as following the recommendations and patterns of communication by international organizations and institutions, which are always considered as policy theories, the reference of policy makers in this field, have achieved good success in creating social welfare and public satisfaction. In this regard, according to the information obtained, it seems that the Social Security Organization, in following the patterns, models and global systems in the field of social security, should undertake serious reforms in the field of macro planning, development and improvement of employees, as well as improving and developing service delivery, take effective steps towards achieving sustainable development of the countr

    Anesthetic effect of tricaine methanesulfonate, clove oil and electroanesthesia on lysozyme activity of Oncorhynchus mykiss

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    There is a few available information about the effect of anesthetics, specially electroanesthesia on immune parameters in fish. In the present work, two anesthetics, MS222 (50 ppm), clove oil (25 ppm), and electroanesthesia were tested in rainbow trout (Oncorhynchus mykiss) in narcosis stage. The results showed, clove oil and electroanesthesia increase the lysozyme activity 24 h after anesthesia(p0.05). It seems use of MS222 during aquacultural practices may induce lesser effect in rainbow trout

    A study on the status of shrimp diseases in Iran and whole the world and to present the best practice management in shrimp farms

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    Shrimp culture in Chabahar in the Sistan and Belochestan province is one of the most important potential for development. From 1386 the white spot syndrome virus (WSSV) observed and collapsed all activity in this area. This virus hugged mortality in the world and in Iran from 1381 in Abadan area this disease induced high mortality in shrimp culture. Different methods applied for prevention WSSV in the world and the main methods consist of used specific pathogen free post larvae, immune stimulant, biosecurity and vaccine. Biosecurity is the best method for prevention the WSSV disease and include different part such as used crab fence, low stocking density, used best quality PL, aeration in the pond and sanitation all equipment and farm. Temperatures play an important role in outbreak of disease. Because in Chabahar area the culture time is in the monsoon season and changing the temperature in this season is trigger factor for WSSV outbreak. In this research study we recommended the season’s culture changing from August to March for prevention the temperature variation in this area and applied biosecurity for control the WSSV outbreak

    A study on methanol herbal plant extract of Echinacea (Echinacea purpurea) on immunity level of Mugil cephalus

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    Medicinal plants have been used in oriental medicine for centuries. Echinacea purpurea (Asteraceae), also known as the purple coneflower, is an herbal medicine with positive effects on various immune parameters that has been used customarily as a treatment for the common cold, coughs, bronchitis, upper respiratory infections, and some inflammatory conditions. The aim of this study was to investigate the effect of Echinacea purpurea (EP) extract on a non-specific immunity of Mugil cephalus. Three hundred and sixty Gray mullet larvae with average weight of 0.75 ± 0.02 g and an average length of 4.40 ±0.81cm collected from Ramin port where is located at 5 km far from the Chabahar and finally transferred to lab of trial in Offshore Research Center. This research was designed based on 4 treatment, Each with 3 replicates. The major factors examined containing growth factors mainly consists of average weight, average daily gain, protein efficiency rate, protein productive rate, hematological and biochemical factors including globin, albumin, total protein, lysozyme, ultimately, immunological factors, and respiratory burst and phagocytosis percent. In general, the results of this study showed that the addition of 100 and 200 mg of EP extract per kg of diet led to a significant increase in growth parameters (final weight, food intake, daily growth rate and efficiency of protein), hematology (RBC, WBC, Hb, Hct) and biochemical factors (total protein, albumin, globulin) in gray mullet were compared to control. The highest lysozyme activity, immunoglobulin, phagocytosis and respiratory burst was observed in treatment containing 200 mg EP extract per kg food. Treatment containing 200 mg EP extract per kg food showed a minimal mortality after challenge with bacteria photobacterium damselae compared to the control treatment. Finally, the present results suggest that diet containing 200 200 mg EP extract per kg food could improve growth, hematology, immunity and resistance against photobacteriosis of grey mullet

    Effect of Changing Solvents on Poly(-Caprolactone) Nanofibrous Webs Morphology

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    Polycaprolactone nanofibers were prepared using five different solvents (glacial acetic acid, 90% acetic acid, methylene chloride/DMF 4/1, glacial formic acid, and formic acid/acetone 4/1) by electrospinning process. The effect of solution concentrations (5%, 10%, 15% and 20%) and applied voltages during spinning (10 KV to 20 KV) on the nanofibers formation, morphology, and structure were investigated. SEM micrographs showed successful production of PCL nanofibers with different solvents. With increasing the polymer concentration, the average diameter of nanofibers increases. In glacial acetic acid solvent, above 15% concentration bimodal web without beads was obtained. In MC/DMF beads was observed only at 5% solution concentration. However, in glacial formic acid a uniform web without beads were obtained above 10% and the nanofibers were brittle. In formic acid/acetone solution the PCL web formed showed lots of beads along with fine fibers. Increasing applied voltage resulted in fibers with larger diameter
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