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- جایگاه : پژوهشی
- مجله: Geopersia
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Middle Jurassic,Kopet-Dagh basin,Clay Minerals,burial diagenesis
- چکیده: گلسنگهای رودخانه ای-دلتایی سازند کشف رود، ژوراسیک میانی، منشأ مهم مواد هیدروکربوری در حوضه کپه داغ شمال شرق ایران محسوب می گردند. تجمع کانیهای رسی در تفسیر منشأ و سیمانی شدن ماسه سنگها طی دیاژنز دفنی اهمیت دارند. کانیهای رسی موجود در گلسنگها در دو منطقه صالح آباد و سنجدک توسط آزمایش تفرق اشع ایکس مورد مطالعه قرار گرفته اند. 28 نمونه بصورت توده ای (از هر برش 14 نمونه)، و 11 نمونه با اندازه کمتر از دو میکرون، بطور مجزا آزمایش شده اند. کانیهای شناسایی شده بطور عمده شامل کائولن، ایلیت، موسکویت، کلریت، لایه های مخلوط شده ایلیت-کلریت، و بطور نادر اسمکتیت است. بخشی از کانیهای رسی حمل شده و بخشی در طی دیاژنز دفنی حاصل شده اند. موسکویت حمل شده در بخشهای بالاتر برش ها فراوانی بیشتری دارند، اما اسمکتیت حمل شده نادر است. نبود لایه های مخلوط ایلیت-اسمکتیت نیز دلالت بر این دارد که اسمکتیت حاصل ایلیت شدن نمی باشد. همچنین انعکاس درخشندگی نیز حاکی از عمق 2-3 کیلومتر است، اما وجود کلریت و لایه های مخلوط ایلیت-کلریت حاصل از دیاژنز دلالت بر عمق تدفین بیشتری دارد. بالاآمدگی سریع سنگ کف گرانیت و سنگهای با دگرگونی درجه پایین منشأ کانیهای موسکویت و کلریت محسوب می گردند.
- چکیده انگلیسی: Middle Jurassic fluvio-deltaic and turbiditic mudstones of the Kashafrud Formation, are important hydrocarbon sources in the gas-rich Kopet-Dagh Basin, northeast Iran. Clay mineral assemblages are important for interpretation of sediment provenance and for understanding burial diagenetic cementation in sandstones. The clay mineral assemblages in mudrocks in two areas, Saleh-Abad and Senjedak, were investigated by X-ray diffraction analysis. A total of 28 bulk samples (14 each section) were analysed and from 11 of these samples the
- انتشار مقاله: 15-03-1394
- نویسندگان: Mehdi Reza Poursoltani,Georgia Pe-Piper
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Veterinary Medicine
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده: نوساناتشوریمحیطموجببروزاسترسدرماهی ها در معرض شده و هم چنین ساختار آنها را نیز دچار تغییر میکند.تغییرات در پارامترهای خونی و بیوشیمیایی می تواند به عنوان یک رابط اولیه بین تغییرات محیط و پاسخ های فیزیولوژیک عمل نماید. هفتاد و پنج ماهی کپور معمولی بالغ به طور تصادفی به 5 گروه تقسیم شدند و در شوری های 1(گروه شاهد)، 3، 6، 9، 12 و 15 گرم در لیتر نگهداری شدند. شوری هر گروه تا رسیدن به شوری مورد نظر به صورت تدریجی، روزانه 3 گرم در لیتر افزایش یافت. ماهی ها پس از رسیدن به شوری نهایی در هر گروه 14 روز نگهداری شده و پس از آن سطح پلاسمایی گلوکز، لاکتات، پروتئین و پارامترهای خون شناسی مورد بررسی قرار گرفتند.بیشترین میزان هماتوکریت، هموگلوبین، تعداد گلبول های قرمز،گلوکز و لاکتات در بالاترین شوری مشاهده گردید. تعداد گلبول های سفید خون تا شوری 9 گرم در لیتر یک افزایش اولیه را نشان داد، ولی پس از آن یک روند کاهشی رانشان داد.سطح پروتئین خون در گروه های مختلف اختلاف معنی داری نشان نداد. نتایج این مطالعه نشان داد که پارامترهای خونی می توانند به عنوان شاخص در ارزیابی آثار شوری بر فیزیولوژی کپور معمولی مورد استفاده قرار گیرد
- چکیده انگلیسی: Fluctuations in salinity impose stress on the physiology of the exposed fish population and can modify their structure. It has been noted that changes in blood characteristics and plasma levels serve as the primary link between environmental change and physiological response (McCormick, 2001). Ninety healthy adult Cyprinuscarpio (C. carpio) were randomly divided into five groups and kept in salinities of 1 (control group), 3, 6, 9, 12 and 15 g/L The salinity was gradually increased by 3 g/L daily to final their concentrations. Fish were kept for 14 days after transference to the final salinity. Subsequently, plasma glucose, lactate, and protein content, as well as hematological parameters, were evaluated. The highest hematocrit (Hct), hemogloblin level (Hb), red blood cell count (RBC), lactate, and glucose values were found fish kept in the highest salinity. The values of the white blood cell count (WBC) showed an initial increase in fish from the control group until a salinity of 9 g/L, but subsequently decreased at higher salinities. The plasma protein levels among the fish in different groups did not show a significant change. The results demonstrate that changes in blood parameters can be used as indices to monitor the effects of salinity on the physiology of C. carpio.
- انتشار مقاله: 11-10-1348
- نویسندگان: Amir Salati,Ali Baghbanzade,Mehdi Soltani,Rahim Peyghan,Gholamhossein Riyazi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Earth Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Porosity,carbonate,diagenesis,Mozduran Formation
- چکیده:
- چکیده انگلیسی: The Upper Jurassic carbonates of the eastern part of the Kopet-Dagh Basin, with thickness of 470 m, are the major gas-bearing reservoir in NE Iran. The objectives of this study are recognition of diagenetic history and estimation of porosity related to dolomitization. Based on field and laboratory study, four carbonate facies associations have been identified at the Mazdavand outcrop. Most of the carbonate rocks were deposited in an open marine, tidal channel and barrier, lagoon and tidal flat setting. Using petrographic and CL analyses, the main diagenetic processes that affected these rocks are micritization, cementation, compaction, fracturing, dissolution, neomorphism, silicification, and dolomitization. Dissolution of grains and calcite cement generated secondary porosity, whereas compaction and cementation are the primary cause of porosity reduction. The average porosity of core plugs is 15.78% and match well with two-dimensional estimates from thin sections. The more porous samples are either highly fractured or contain interparticle and intercrystalline porosity, within the lower strata that contain more dolostone.
- انتشار مقاله: 27-06-1397
- نویسندگان: Mehdi Reza Poursoltani,Mahin Hrati Sabzvar
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Earth Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,sequence stratigraphy,Kashafrud Formation,Kopet Dagh Basin
- چکیده:
- چکیده انگلیسی: The Upper Bajocian- Lower Bathonian succession in the Kopet-Dagh Basin of NE Iran represents fluvio-deltaic to turbidite deposits. The Kashafrud Formation provides an excellent opportunity to study the interplay between deep-water sedimentation and syndepositional tectonic subsidence (or uplift) in the region. The effects of these processes caused sea-level changes, variation in depositional sequences, and formation of different types of sequence boundaries. The Kashafrud Formation is recognized as a super-sequence and is overlain and underlain by type 1 sequence boundaries. Based on sedimentological analysis, twelve lithofacies and three facies associations have been identified in the Kashafrud Formation. The succession is represented by parasequences formed as part of a second order super-sequence, and a fourth order regression. The thickness variations indicate a strong influence of basin-floor topography on the location of depositional successions. High rates of sea-level fall led to the development of a limited number of major incised channels; in contrast the major thick-bedded mudstone indicates high rates of sea-level rise for prolonged periods. The interpreted sea-level curve during deposition of the Kashafrud Formation can be correlated with the world sea-level curve for the Middle Jurassic, with differences mainly related to local structural events in the basin. Tectonism, compaction and rate of deposition were the main factors that controlled the vertical facies transitions in these parasequences.
- انتشار مقاله: 30-03-1396
- نویسندگان: Mehdi Reza Poursoltani,Mehdi Reza Poursoltani,Mehdi Reza Poursoltani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: waste water,density,Huso huso,Fatty acid,Nereis diversicolor,Integrated aquaculture
- چکیده:
- چکیده انگلیسی: The growth and survival of the polychaete Nereis diversicolor fed on waste water Huso huso were studied under different densities for creating the equivalence for rearing of N. diversicolor and fish stocking rate in the integrated farming system. This study was conducted to test the effect of feeding the polychaete worm Nereis diversicolor with wastewater derived different densities Huso huso. The worms with an initial mean weight of 0.05 g were fed for 55 days with wastewater of varied densities 2-3, 3-4 and 4-5 kg m-2 fish with 0.2-0.3 kg m-2 worm. Nereis fed with fish feed was as a control. The results of the present study showed that the worms were able to grow using the fish waste water. The resulting biomass and average weight of harvested worms was significantly higher in the density 3-4 kg m-2 fish treatment than in the other two treatments (p<0.05) which was lower than control. The worms from the trial NFF (Nereis fed with fish feed) showed a higher survival rate and biomass production than those from the trials in which they were fed with waste water of different densities. The findings suggest that a suspension of H. huso waste water can be used in the rearing of juvenile N. diversicolor in an integrated farming system. Certain fatty acids were abundant in worms from treatments, specifically 14:0, 16:0, C18:1n9c, 20:1, 22:1n-9, 18:3n-3, 20:2, 20:5n-3 (EPA) and 22:6n-3 (DHA), were equal between Nereis fed with waste water of different densities but significantly lower than in Nereis fed with fish feed. The results demonstrate that production of N. diversicolor using fish wastes is highly efficient. The process would consequently offer a sustainable solution to the existing problem of organic pollution. The use of worm biomass as a waste treatment method and an alternative source of FA and protein for Huso huso production systems could achieve multiple aims, including the retention of valuable lipids from the Huso huso wastes.
- انتشار مقاله: 16-11-1395
- نویسندگان: Zabih Ollah Pajand,Mehdi Soltani,Abolghasem Kamali,Mahmoud Bahmani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Breaded Kilka,Batter,Tempura,Product quality
- چکیده:
- چکیده انگلیسی: With considering the abundant sources of Kilka fish in Caspian Sea, the aim of this study was to produce a new product from Kilka in industrial scale with two different types of batters (simple and tempura batter) in order to increase human consumption and evaluation of chemical, microbial and sensory properties.The Kilka fish were battered in the simple and tempura batter, then the fish were breaded with conventional breading crumbs and then pre-fried at 170°C for 30 sec in sunflower oil .The fried samples were immediately frozen through continuous method at -40°C in a spiral freezer and they were packaged. The samples were kept at -18°C. Chemical, microbial and sensory properties were performed on the fried breaded Kilka fish a day after freezing. There were no significant difference found in protein, fat and ash contents of raw breaded Kilka prepared from tempura and simple batters (P≥0.05) But there was significant difference in moisture content of raw breaded Kilka prepared from two batters (P<0.05). There was a significant difference in moisture and fat contents between raw and fried breaded Kilka by both tempura and simple batters (P<0.05) with lower moisture content and higher fat content in fried breaded Kilka. For determination of microbiological quality of breaded kilka, Total Bacteria Count (TBC) and Total Colifirms (TC) and E. coli were determined. The produced breaded Kilka with two types of batters were proper from the hygienic view point. Comparing TC and TBC of breaded Kilka products with different batters showed that the breaded Kilka with tempura batter is in a better status. There were significant differences in some sensory properties of breaded Kilka with simple and tempura batters like odor, cohesiveness of batter and general acceptability (P<0.05). Among all determined characteristics, the breaded Kilka with tempura batter had higher scores than the one with simple batter.
- انتشار مقاله: 27-01-1391
- نویسندگان: Sarah Jorjani,Ali Asghar Khanipour,Mehdi Soltani,Abbasali Matalebi,Abolghasem Kamali,Afshin Ghelichi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: vaccine,Growth,Haematology,Probiotic,Trout
- چکیده:
- چکیده انگلیسی: The present study evaluated the effect of Lactobacillus plantarum as a probiotic on the growth performance and haematological parameters of juvenile rainbow trout (O. mykiss) weighing 29.6±1.8 g immunized with streptococcus/lactococcus vaccine. Fish were randomly allocated into 4 equal groups consisting of fish fed with the probiotic supplemented in diet (group P), fish immunized with streptococcosis / lactococcosis vaccine and fed with a normal diet (group V), fish immunized with streptococcosis / lactococcosis vaccine and fed with probiotic supplemented in diet (group P+V) and unimmunized fish fed (group C). The probiotic (108cells/g) was used at 1 g ∕ kg feed. Results showed that weight gain, final weight, condition factor and thermal-unit growth coefficient were improved in P+V group compared to the control one (P < 0.05).Also, feed conversion ratio in P+V group was lower than other trails (P < 0.05). In addition, white blood cell population (WBC) in groups V and P+V were significantly higher than both P and C groups (P < 0.05). Also PCV was significantly increased (P <0.05) in both P and P+V groups compared to V trail and control group. In addition, RBC and Hb levels were significantly higher (P < 0.05) in group P+V than control one. No significant difference (P > 0.05) was found in MCH, MCHC and MCV levels among the different experimental groups. Hence, application of probiotic can be considered as a beneficial dietary probiotic for improvement of growth performance and some haematological parameters in trout vaccinated against streptococcosis / lactococcosis.
- انتشار مقاله: 11-01-1396
- نویسندگان: Mehdi Soltani,Mehdi Soltani,Mehdi Soltani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Growth,Carotenoids,Pigmentation,Arthrospir platensis,koi
- چکیده:
- چکیده انگلیسی: This study evaluated the effects of diets containing 0, 2.5, 5, 7.5 and 10% Arthrospira platensis on skin pigmentation, growth performance, and digestive enzymes of (Koi, Cyprinus carpio). A completely randomized experimental design was developed with five treatments and three replicates. One hundred and fifty koi fish with average initial weight of 30±1g were assigned to fifteen experimental tanks. The experiment lasted for eight weeks. Koi fish fed with 5% A. platensis showed a significant lower growth performance than those fed with 7.5 and 10% A. platensis (p<0.05). However, carotenoid (astaxanthin) concentrations of skin significantly increased with increased levels alga (p<0.05). Inclusion of 10% A. platensis as a natural pigment source resulted in the highest astaxanthin deposition in skin. The highest values of a* (redness) and b* (yellowness) were observed in fish skin fed with 10%A. platensis. The results demonstrate that A. platensis can be introduced as a natural carotenoid source in koi fish diets. The activities of protease, amylase and lipase in dietary supplementation of A. platensis were significantly higher than those of the control group. Liver enzymeze also decreased significantly by dietary supplementation (p<0.05). However, inclusion of 5-10% A. platensis in diets did appear to have a significant positive effect on growth rates, pigmentation, and improvement of digestive and liver enzymes activities.
- انتشار مقاله: 01-08-1395
- نویسندگان: Fatemeh Ansarifard,Houman Rajabi Islami,Mehdi Shamsaie Mehrjan,Mehdi Soltani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Lipid Peroxidation,Body Composition,Carp,Date seed extract,TVN
- چکیده:
- چکیده انگلیسی: Date palm seed (Phoenix dactylifera) (DPS) extract has been used worldwide in pharmaceutical agent due to its constituents. This study aimed to assess the effects of DPS extract as a dietary supplementation at on the body composition, lipid peroxidation and tissue quality of common carp (Cyprinus carpio) based on the total volatile nitrogen (TVN) test. Common carp juveniles weighing ca 32 g were cultured in 26°C freshwater for 60 days and fed with diets supplemented with 0.5%, 1%, 2% and 4% of DPS extract. At the end of the trail, the crude protein (p>0.05) and crude lipid (p
- انتشار مقاله: 19-02-1395
- نویسندگان: Maryam Mohammadi,Mehdi Soltani,A Siahpoosh,M Shamsaie
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Fisheries Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Nigella sativa,Satureja bachtiarica,Adjuvant,streptococcosis,lactococcosis
- چکیده:
- چکیده انگلیسی: Lactococcosis has been defined as acute septicaemia, which causes economic losses in farmed fish, especially in rainbow trout. This study was done to evaluate the effects of Satureja bachtiarica and Nigella sativa essential oils on the efficacy of lactococcosis vaccine in rainbow trout. A total number of 270 fishes with a mean average of 120 g were obtained; they were randomly divided into nine groups, each with three replicates, after two weeks of adaptation. The groups were: no injection, vaccine only, DMSO injection, vaccine with 50, 100, and 200 microgram ip injection. Two, four, and six weeks after vaccination, serological and haematological parameters were evaluated. At the sixth week, 1.7×107 cfu as LD50 96 hrs of Lactococcus garvieae were i.p injected and the relative survival percentage was calculated. The results indicated that N. sativa essence is effective on the leukocyte population as the highest number of leukocytes were found in fish receiving high concentration of N. sativa. The relative survival rate of the studied fish decreased with decreasing of the N. sativa essential oil concentration, with a significant difference with control groups (P<0.05). However, using S. bachtiarica was not significantly effective on the relative survival rate of fish. The results of this study indicated that N. sativa essential oil can be used as adjuvant for L. garvieae vaccine, since it resulted in increasing leukocytes and the relative survival rate, although S. bachtiarica was not effective on immune parameters of the studied fish.
- انتشار مقاله: 07-11-1395
- نویسندگان: Mehdi Raissy,Saeed Hashemi,Milad Roushan,Mohsen Jaafarian,Hassan Momtaz,Mehdi Soltani,Esmaeil Pirali Kheirabadi
- مشاهده