Subjects -> MATHEMATICS (Total: 1013 journals)
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    - MATHEMATICS (714 journals)
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    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)            First | 1 2 3 4 | Last

Showing 201 - 400 of 538 Journals sorted alphabetically
Educação Matemática Debate     Open Access  
Edumatica : Jurnal Pendidikan Matematika     Open Access  
EduMatSains     Open Access  
Electronic Journal of Differential Equations     Open Access  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 3)
Em Teia : Revista de Educação Matemática e Tecnológica Iberoamericana     Open Access  
Emergent Scientist     Open Access  
Energy for Sustainable Development     Hybrid Journal   (Followers: 13)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Open Access   (Followers: 2)
Euclid     Open Access  
European Journal of Applied Mathematics     Hybrid Journal  
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 1)
Examples and Counterexamples     Open Access  
Experimental Mathematics     Hybrid Journal   (Followers: 5)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Extracta Mathematicae     Open Access  
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 5)
Fixed Point Theory and Applications     Open Access  
Formalized Mathematics     Open Access  
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Foundations and Trends® in Econometrics     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Networking     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Stochastic Systems     Full-text available via subscription   (Followers: 1)
Foundations and Trends® in Theoretical Computer Science     Full-text available via subscription   (Followers: 1)
Foundations of Computational Mathematics     Hybrid Journal  
Fractal and Fractional     Open Access  
Fractals     Hybrid Journal   (Followers: 1)
Frontiers of Mathematics in China     Hybrid Journal  
Fuel Cells Bulletin     Full-text available via subscription   (Followers: 9)
Functional Analysis and Other Mathematics     Hybrid Journal   (Followers: 4)
Fundamental Journal of Mathematics and Applications     Open Access  
Funktsional'nyi Analiz i ego Prilozheniya     Full-text available via subscription  
Fuzzy Optimization and Decision Making     Hybrid Journal   (Followers: 8)
Game Theory     Open Access   (Followers: 2)
Games     Open Access   (Followers: 4)
Games and Economic Behavior     Hybrid Journal   (Followers: 25)
Gamm - Mitteilungen     Hybrid Journal  
GANIT : Journal of Bangladesh Mathematical Society     Open Access  
GEM - International Journal on Geomathematics     Hybrid Journal   (Followers: 1)
General Mathematics     Open Access  
Glasgow Mathematical Journal     Full-text available via subscription  
Global Journal of Mathematical Sciences     Full-text available via subscription  
Graphs and Combinatorics     Hybrid Journal   (Followers: 4)
Grey Systems : Theory and Application     Hybrid Journal  
Groups, Complexity, Cryptology     Open Access   (Followers: 2)
GSTF Journal of Mathematics, Statistics and Operations Research     Open Access   (Followers: 1)
Historia Mathematica     Full-text available via subscription  
Historical Methods: A Journal of Quantitative and Interdisciplinary History     Hybrid Journal   (Followers: 28)
IMA Journal of Applied Mathematics     Hybrid Journal  
IMA Journal of Numerical Analysis - advance access     Hybrid Journal  
ImmunoInformatics     Open Access   (Followers: 1)
Indagationes Mathematicae     Open Access  
Indian Journal of Pure and Applied Mathematics     Hybrid Journal   (Followers: 4)
Indonesian Journal of Combinatorics     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 1)
Infinite Dimensional Analysis, Quantum Probability and Related Topics     Hybrid Journal   (Followers: 1)
Infinity Jurnal Matematika dan Aplikasinya     Open Access   (Followers: 3)
Information and Inference     Free  
InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan     Open Access  
InfraMatics     Open Access  
Insight - Non-Destructive Testing and Condition Monitoring     Full-text available via subscription   (Followers: 111)
International Electronic Journal of Algebra     Open Access  
International Journal for Numerical Methods in Engineering     Hybrid Journal   (Followers: 35)
International Journal for Numerical Methods in Fluids     Hybrid Journal   (Followers: 19)
International Journal of Advanced Mathematical Sciences     Open Access  
International Journal of Advanced Mechatronic Systems     Hybrid Journal   (Followers: 2)
International Journal of Advanced Research in Mathematics     Open Access  
International Journal of Advances in Engineering Sciences and Applied Mathematics     Hybrid Journal   (Followers: 10)
International Journal of Algebra and Computation     Hybrid Journal   (Followers: 1)
International Journal of Algebra and Statistics     Open Access   (Followers: 3)
International Journal of Applied and Computational Mathematics     Hybrid Journal  
International Journal of Applied Mathematical Research     Open Access   (Followers: 1)
International Journal of Applied Mathematics and Computer Science     Open Access   (Followers: 7)
International Journal of Applied Mechanics     Hybrid Journal   (Followers: 8)
International Journal of Applied Nonlinear Science     Hybrid Journal  
International Journal of Autonomic Computing     Hybrid Journal   (Followers: 1)
International Journal of Bifurcation and Chaos     Hybrid Journal   (Followers: 4)
International Journal of Biomathematics     Hybrid Journal   (Followers: 2)
International Journal of Computational Complexity and Intelligent Algorithms     Hybrid Journal  
International Journal of Computational Economics and Econometrics     Hybrid Journal   (Followers: 6)
International Journal of Computational Geometry and Applications     Hybrid Journal   (Followers: 2)
International Journal of Computational Intelligence and Applications     Hybrid Journal   (Followers: 2)
International Journal of Computational Methods     Hybrid Journal   (Followers: 4)
International Journal of Computer Processing Of Languages     Hybrid Journal   (Followers: 1)
International Journal of Control, Automation and Systems     Hybrid Journal   (Followers: 15)
International Journal of Dynamical Systems and Differential Equations     Hybrid Journal   (Followers: 1)
International Journal of Economics and Accounting     Hybrid Journal   (Followers: 1)
International Journal of Foundations of Computer Science     Hybrid Journal   (Followers: 3)
International Journal of Fuzzy Computation and Modelling     Hybrid Journal   (Followers: 2)
International Journal of Image and Graphics     Hybrid Journal   (Followers: 5)
International Journal of Industrial Electronics and Drives     Hybrid Journal   (Followers: 3)
International Journal of Low-Carbon Technologies     Open Access   (Followers: 1)
International Journal of Mathematical Education in Science and Technology     Hybrid Journal   (Followers: 9)
International Journal of Mathematical Modelling & Computations     Open Access   (Followers: 3)
International Journal of Mathematical Modelling and Numerical Optimisation     Hybrid Journal   (Followers: 5)
International Journal of Mathematical Sciences and Computing     Open Access  
International Journal of Mathematics     Hybrid Journal   (Followers: 4)
International Journal of Mathematics & Computation     Full-text available via subscription  
International Journal of Mathematics and Mathematical Sciences     Open Access   (Followers: 4)
International Journal of Mathematics in Operational Research     Hybrid Journal   (Followers: 2)
International Journal of Metaheuristics     Hybrid Journal   (Followers: 1)
International Journal of Modelling in Operations Management     Hybrid Journal   (Followers: 2)
International Journal of Modern Nonlinear Theory and Application     Open Access   (Followers: 1)
International Journal of Number Theory     Hybrid Journal   (Followers: 1)
International Journal of Partial Differential Equations     Open Access   (Followers: 2)
International Journal of Polymer Science     Open Access   (Followers: 25)
International Journal of Pure Mathematical Sciences     Open Access  
International Journal of Reliability, Quality and Safety Engineering     Hybrid Journal   (Followers: 14)
International Journal of Research in Undergraduate Mathematics Education     Hybrid Journal   (Followers: 4)
International Journal of Sediment Research     Full-text available via subscription   (Followers: 2)
International Journal of Shape Modeling     Hybrid Journal   (Followers: 1)
International Journal of Theoretical and Mathematical Physics     Open Access   (Followers: 13)
International Journal of Trends in Mathematics Education Research     Open Access   (Followers: 4)
International Journal of Ultra Wideband Communications and Systems     Hybrid Journal  
International Journal of Wavelets, Multiresolution and Information Processing     Hybrid Journal  
International Journal on Artificial Intelligence Tools     Hybrid Journal   (Followers: 9)
International Mathematics Research Notices     Hybrid Journal   (Followers: 1)
Internet Mathematics     Hybrid Journal   (Followers: 1)
Inventiones mathematicae     Hybrid Journal   (Followers: 2)
Inverse Problems in Science and Engineering     Hybrid Journal   (Followers: 3)
Investigations in Mathematics Learning     Hybrid Journal  
Iranian Journal of Optimization     Open Access   (Followers: 2)
Israel Journal of Mathematics     Hybrid Journal  
Ithaca : Viaggio nella Scienza     Open Access  
ITM Web of Conferences     Open Access  
Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya     Full-text available via subscription  
Jahresbericht der Deutschen Mathematiker-Vereinigung     Hybrid Journal  
Japan Journal of Industrial and Applied Mathematics     Hybrid Journal  
Japanese Journal of Mathematics     Hybrid Journal  
JIPM (Jurnal Ilmiah Pendidikan Matematika)     Open Access  
JMPM : Jurnal Matematika dan Pendidikan Matematika     Open Access  
JOHME : Journal of Holistic Mathematics Education     Open Access   (Followers: 3)
Johnson Matthey Technology Review     Open Access  
Jornal Internacional de Estudos em Educação Matemática     Open Access  
Journal d'Analyse Mathématique     Hybrid Journal   (Followers: 2)
Journal de Mathématiques Pures et Appliquées     Full-text available via subscription   (Followers: 3)
Journal for Research in Mathematics Education     Full-text available via subscription   (Followers: 29)
Journal für Mathematik-Didaktik     Hybrid Journal  
Journal of Advanced Mathematics and Applications     Full-text available via subscription   (Followers: 1)
Journal of Algebra     Full-text available via subscription   (Followers: 3)
Journal of Algebra and Its Applications     Hybrid Journal   (Followers: 3)
Journal of Algebraic Combinatorics     Hybrid Journal   (Followers: 3)
Journal of Algorithms & Computational Technology     Open Access  
Journal of Applied Mathematics     Open Access   (Followers: 3)
Journal of Applied Mathematics and Computing     Hybrid Journal  
Journal of Applied Mathematics, Statistics and Informatics     Open Access   (Followers: 1)
Journal of Artificial Intelligence and Data Mining     Open Access   (Followers: 10)
Journal of Classification     Hybrid Journal   (Followers: 5)
Journal of Combinatorial Designs     Hybrid Journal   (Followers: 4)
Journal of Combinatorial Optimization     Hybrid Journal   (Followers: 7)
Journal of Combinatorial Theory, Series A     Full-text available via subscription   (Followers: 5)
Journal of Combinatorial Theory, Series B     Full-text available via subscription   (Followers: 3)
Journal of Complex Analysis     Open Access   (Followers: 2)
Journal of Complex Networks     Hybrid Journal   (Followers: 1)
Journal of Complexity     Hybrid Journal   (Followers: 6)
Journal of Computational and Applied Mathematics     Hybrid Journal   (Followers: 6)
Journal of Computational Biology     Hybrid Journal   (Followers: 9)
Journal of Computational Mathematics and Data Science     Open Access  
Journal of Computational Multiphase Flows     Open Access   (Followers: 1)
Journal of Computational Physics     Hybrid Journal   (Followers: 59)
Journal of Computational Physics : X     Open Access   (Followers: 1)
Journal of Computer Engineering, System and Science (CESS)     Open Access  
Journal of Contemporary Mathematical Analysis     Hybrid Journal  
Journal of Cryptology     Hybrid Journal   (Followers: 5)
Journal of Difference Equations and Applications     Hybrid Journal  
Journal of Differential Equations     Full-text available via subscription   (Followers: 1)
Journal of Discrete Mathematics     Open Access   (Followers: 1)
Journal of Dynamics and Differential Equations     Hybrid Journal  
Journal of Engineering Mathematics     Hybrid Journal   (Followers: 2)
Journal of Evolution Equations     Hybrid Journal  
Journal of Experimental Algorithmics     Full-text available via subscription  
Journal of Flood Risk Management     Hybrid Journal   (Followers: 14)
Journal of Function Spaces     Open Access  
Journal of Functional Analysis     Full-text available via subscription   (Followers: 3)
Journal of Geochemical Exploration     Hybrid Journal   (Followers: 4)
Journal of Geological Research     Open Access   (Followers: 1)
Journal of Geovisualization and Spatial Analysis     Hybrid Journal  
Journal of Global Optimization     Hybrid Journal   (Followers: 6)
Journal of Global Research in Mathematical Archives     Open Access  
Journal of Homotopy and Related Structures     Hybrid Journal  
Journal of Honai Math     Open Access  
Journal of Humanistic Mathematics     Open Access   (Followers: 1)
Journal of Hyperbolic Differential Equations     Hybrid Journal  
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Industrial Mathematics     Open Access   (Followers: 2)
Journal of Inequalities and Applications     Open Access  
Journal of Infrared, Millimeter and Terahertz Waves     Hybrid Journal   (Followers: 3)
Journal of Integrable Systems     Open Access  
Journal of Knot Theory and Its Ramifications     Hybrid Journal   (Followers: 2)
Journal of Liquid Chromatography & Related Technologies     Hybrid Journal   (Followers: 7)
Journal of Logical and Algebraic Methods in Programming     Hybrid Journal   (Followers: 1)
Journal of Manufacturing Systems     Full-text available via subscription   (Followers: 3)
Journal of Mathematical Analysis and Applications     Full-text available via subscription   (Followers: 3)
Journal of mathematical and computational science     Open Access   (Followers: 2)

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Internet Mathematics
Journal Prestige (SJR): 0.584
Citation Impact (citeScore): 1
Number of Followers: 1  
 
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ISSN (Print) 1542-7951 - ISSN (Online) 1944-9488
Published by Taylor and Francis Homepage  [2648 journals]
  • Assessing Water Resource Issues Among States in the US South East Region

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      Abstract: Publication year: 2020Source: Marine Science, Volume 8, Number 1E. C. Merem, Y. A. Twumasi, J. Wesley, D. Olagbegi, M. Crisler, C. Romorno, M. Alsarari, P. Isokpehi, A. Hines, G. S. Ochai, E. Nwagboso, S. Fageir, S. LeggettThe US Southeast region is endowed with vast deposits of water resource assets located in numerous states. Considering the growing water use to serve rapidly expanding land uses from agriculture, residential areas, thermoelectric to industrial facilities. Over the years, the demand for water to meet the needs of various sectors in the zone has precipitated increased withdrawals, declining levels in aquifers and sectorial imbalance in the distribution. Accordingly, sectorial imbalance and stress attributed to socio-economic, physical and ecological parameters is now being felt in the areas many considered fully endowed with hydrological assets and less vulnerable to depletion. Beset by the management implications of the trends, various agencies in the zone have stepped up mitigation measures. Notwithstanding the gravity of the challenges and the fact that most studies are still festooned with projected depletion patterns in the US arid West, very little work exists in the literature on the changing patterns in water resource use in the Southeast region using a mix scale model. For that, this research will fill that void by assessing the variabilities in water resource use among some states in the Southeast. With emphasis on the issues, trends, factors, and impacts, the study uses secondary info from major data agencies analyzed by mix scale techniques of descriptive statistics and Geographic Information Systems (GIS) to assess the tendencies. The results point to changes in usage among the sectors in the form of gains and declines, the emergence of hydroelectricity and irrigation as the largest users, the dominance of Florida, regional dependence on surface water sources, evidence of depletion and spatial dispersion of these trends across the states. With these changes attributed to various elements, the paper offered suggestions ranging from water conservation measures, the adoption of efficient polices to the design of a regional hydrological information system.
       
  • The Process of Fatigue Analysis on Fixed Metal Offshore Platforms

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      Abstract: Publication year: 2017Source: Marine Science, Volume 7, Number 1Sajed Nemati Havigh, Mehdi Behdarvandi AskarOne of the important reasons of fracture in jacket pelatforms that makes the sadenly failure and structual resistanc reduce at long time, is Fatigu phenomena. Because of existence of peridice loads derived by waves, sea current, wind, etc. hence, fatigue analysis is important item in offshore structual design. The known methodes of fatigue analys is published at design codes suche as, API and DNV and ABS and other relavant codes, that are in acceptable relationship whit toghether. This paper will reviwe the fatigue analysis methodes and will tries to present a simple and accurate methode that be according to Persian Gulf candition. Whereas, the most of jacket pelatformes in Persian Gulf, has natural ferequence about less than 3s, that’s wisely to using Deterministic methhode for fatigue analysis. However, the mentioned offshore design codes, offer the Spectural methode for all of environmental condition, although the Spectural methode has more accuracy in comparition whit other methodes, but it’s take larg time to analys and needs to high knowledge of mathmaticul transformation functions, frecuncy-domain analysis and dynamic of structures. And in the end, the paper offers that Persian Gulf’s pelatformes, consider whit Erthquake analys, because, most of pelatformes are in the end part of those useful life time.
       
  • Coastline Mobility of Goree Island (Senegal), from 1942 to 2011

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      Abstract: Publication year: 2017Source: Marine Science, Volume 7, Number 1Bakhoum P. W., Ndour A., Niang I., Sambou B., Traore V. B., Diaw A. T., Sambou H., Ndiaye M. L.This current study aims to quantify Goree island littoral evolution from 1942 to 2011 in the context of sea level rise. Digital Shoreline Analysis System (DSAS), in ArcGIS software was used to extract shoreline positions based on satellites and aerials photography (1942, 1966 and 2011) and estimate historic rate of change. Rates of change statistics were calculated using End Point Rate (EPR) and Net Shoreline Movement (NMS). In this study, EPR was calculated by dividing NMS by elapsed time between earliest and latest measurements for each transect. Results obtained show that shoreline between 1942 and 1966 retreated (-4m) at an average rate of -0.16m /year, compared an average of -0.06m / year between 1966 and 2011. This dynamic can be interpreted as result of project to preserve and restore Goree island (1979-1981). Slave house, mosque of island, Mariama BA School, and historical museum are the most sector affected by erosion. Analysis of results showed that causes are more natural than anthropic. These results provide coastal erosion specialists with valuable information for warning, prevention and adaptation measures against natural disasters such as flooding.
       
  • Investigation of the Effect of the Circular Stands Diameters of Marine
           Structures and the Distances between Them on Wave Run-up and Force

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      Abstract: Publication year: 2016Source: Marine Science, Volume 6, Number 1Mohammad Ghatarband, Mehdi Behdarvandi AskarDesigning see platform stands has always appealed to a large number of engineers active in the field, because see platforms are one of the most important types of offshore structures for utilization of oil and gas resources. Engineers need to know as much as possible about the forces applied to these stands in order to design them in the best way. The purpose of the research is to be able to study and investigate as far as possible the applied forces and wave run-up at circular stands located in offshore regions. Flow-3D software was used for this purpose and for modeling. It was observed after modeling with different geometries that the highest run-up value occurs at 0.3 meter stand diameter and at stand number 1. Furthermore, the greatest applied force occurs in the state where stand diameter is the largest, and the distance between the stands is the shortest.
       
  • Size at First Maturity of Cuttlefish, Sepia latimanus, from North Sulawesi
           Waters, Indonesia

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      Abstract: Publication year: 2015Source: Marine Science, Volume 5, Number 1Silvester B. Pratasik, Marsoedi, D. Arfiati, D. SetyohadiBiological overfishing could occur from either excessive and immature individual exploitation or habitat destruction. This study was aimed to estimate size at first maturity of cuttlefish, Sepialatimanus, collected from North Sulawesi waters. All samples were measured and observed their maturity level. Based on these data, the dorsal mantle length (DML) at first maturity was assessed for minimum legal size determination. Results showed that the cuttlefish samples had maturity level range from immature to post-spawning conditions, while the size at first maturity was estimated as 16 cm DML. Maximum DML was estimated as 55.53 cm and growth coefficient as 0.248. The deviation of mean DML from maximum dorsal length was also considered to see the population condition.
       
  • Local Wisdom Mane’e and Its Impact on Fish Resources and Environment in
           Nanusa Islands, North Sulawesi, Indonesia

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      Abstract: Publication year: 2015Source: Marine Science, Volume 5, Number 1Emil ReppieMane’e is one of the local wisdoms in coral reef fisheries management that is still being conducted in Nanusa Islands, North Sulawesi, Indonesia. Mane’e means a statement of agreement of local community to perform an activity together and rituals to prepare fishing equipment and carry out fishing operations together on the basis of cooperation, solidarity and unity. But mane'e itself is actually a serial end of a customary law process called Eha, which means as a warning not to do or a ban for all public to take natural resources during certain time. Fishing gear is very traditional, made of forest rope (creeping plant), then joined in a row to around 3-4 km long and wrapped with young coconut leaves. The gear is set circle to a reef flat as location of mane’e in the morning at high tides. Both ends of the rope are pulled toward the coast so the fish could be trapped in the middle of the lagoon at the lowest tide. Mane'e ceremony is conducted at nine sites and each has its own name. Rannesite on Intata Island has been established by the regency government as a tourism icon mane'e festival and open to the public. Mane'e through Eha system' actually has a positive impact on compliance with local communities. But the intervention of outsiders has give negative impact in the form of changes in beliefs and social structure, fishery resources damage and the environment deteriorations.
       
  • On the Kolmogorov Spectra in the Field of Nonlinear Wind Waves

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      Abstract: Publication year: 2014Source: Marine Science, Volume 4, Number 3Vlad Polnikov, G. UmaThe nature of Kolmogorov spectra formation in the field of nonlinear wind waves are discussed. The currently dominating assertion is that such spectra for wind waves are formed as stationary solutions of the kinetic equation, which describes the conservative nonlinear four-waves resonant interactions. However, this statement here is is refuted by direct numerical calculations of the kinetic integral. Using two independent methods of calculating the kinetic integral for nonlinear surface waves in deep water, it is shown that the theoretical spectra of Kolmogorov type, found by Zakharov and co-authors [4, 7], are not stationary on a limited frequency band. Conditions for the existence of Kolmogorov spectra in real wind waves and possible mechanisms of their formation are discussed.
       
  • Paleoecology of Upper Cretaceous Sediments in Central Iran, Kerman
           (Bondar-e Bido Section) Based on Ostracods

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      Abstract: Publication year: 2014Source: Marine Science, Volume 4, Number 2Bita Ghasem Shirazi, Lida Bakhshandeh, Abdollah YazdiIn order to assess the biological potential of ostracods in response to environmental processes, in this study, the Upper Cretaceous sediments of Bondare Bido Section, has been studied. The study Section is located at 45 km away in South-West direction of the Kerman (Iran). The area between northern latitude 57˚17' 48" and " western longitude 29˚49'44. Due to high sensitivity to environmental changes, the Ostracods are reliable indicators to determine water depth in Upper Cretaceous. On the bases of identified microfossils, the Upper Cretaceous sediments of the study area are Turonian-Maastrichtian in age. These deposits have been biostratigraphically and paleoecologicall point of view evaluated and boundary between stages are determined. Here we report 13 genuses of well preserved ostracods belong to two family Podocopida and Platycopida. The assemblage of ostracods and foraminifera are good indicator of ecological environment during deposition of Cretaceous sediments. The abundance of genus and species of planktonic foraminifera and the presence of some benthic foraminifera and ostracods, may indicate relatively deep and open marine (hemiplegic) environment for these deposits.
       
  • Effect of a Ballast Water Treatment System on Survivorship of Natural
           Populations of Marine Plankton in Persian Gulf, Iran

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      Abstract: Publication year: 2014Source: Marine Science, Volume 4, Number 2Maryam Shapoori, Mansoure GholamiWe investigated the viability of phytoplankton from ballast water of commercial and petroleum ships berthed at the ports of Kharg Island, Iran. Ballast water was carried in regional seas in order to assess the efficiency of this type of ballast water management at reducing the abundance and diversity of phytoplankton. Although there was an overall reduction in the average abundance and number of taxa after exchange this was not consistent between tanks and voyages. On some occasions there were changes in species composition after exchange. Mentioned research was a part of Regional and National plan and protection for environmental impact assessment and also control and prevention of navigation activities. The result showed that species were dominant in the samples of Ceratium sp., Rhizosolenia sp., Coscinodiscusjonesianus, Eucampia sp., ChaetocerusdiversicurvatusThalassionemanitzschoides. Factors such as the depth of the water during the exchange process, the season and the method of exchange influenced the efficacy of the exchange process. The variability in the results after exchange mean that this is unlikely to be a ballast water management method that would give consistent results and careful consideration would have to be given to the suitability of using this method in regional seas as a means of reducing the risk of introducing non-native species.
       
  • Variation of Heavy Metal Concentration (Cu, Pb and Cd) in
           Nemipterusjaponicus (Bloch, 1793) and Scolopsistaeniatus (Cuvier, 1830) in
           Hot and Cold Season in the Coastal Waters of Bushehr Province (Persian
           Gulf-Iran)

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      Abstract: Publication year: 2014Source: Marine Science, Volume 4, Number 2Nejatkhah Manavi P., Zardoost S., Vosoughi A.Concentrations of heavy metals ( Cu, Pb and Cd) in muscle and liver of two fish species Nemipterusjaponicus and Scolopsistaeniatus(Nemipteridae) been studied in Bushehr waters (ports: Dayer and Assaluyeh) in winter 2011 and summer 2012. Fish samples collected from local trawler men, three replicate of each samples were analyzed using wet method (ASTM, 1999) in which 0.5 gr from each sample (liver and muscle tissues) were digested and analyzed by atomic absorption spectroscopy (AAS- graphite furnace). Concentration of copper (7225.5±1244 ppb) in liver was highest in winter time comparing to plumb (213.5±127.65 ppb) and cadmium (925.5±106.85 ppb). Concentrations difference of heavy metals in fish tissues was statistically significant between the two seasons (P≤0.05). Highest concentrations of Pb (213.5±127.65 ppb), Cd (925.5±106.85 ppb) and Cu (7225.5±1244 ppb) were measured in liver tissues while lowest concentrations of Pb (49±0 ppb), Cd (34.16±3.77 ppb) and Cu (445.85±70.7 ppb) been seen in muscle tissues. Using one way analysis, concentrations of all three heavy metals in muscles, mostly shows significant differences between the two seasons (P
       
 
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