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194151
電子期刊
H. Barral, and C. Genthon, and A. Trouvilliez, and C. Brun, and C. Amory
A total of 3 years of blowing-snow observations and associated meteorology along a 7 m mast at site D17 in coastal Adélie Land are presented. The observations are used to address three atmospheric-moisture issues related to the occurrence of blowing snow, a feature which largely affects many regions of Antarctica: (1) blowing-snow sublimation raises the moisture content of the surface atmosphere close to saturation, and atmospheric models and meteorological analyses that do not carry blowing-sno...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1994-0416
來源: DOAJ
System ID: 415266
194152
電子期刊
Mariano García Rodríguez
The red shrimp (Aristeus antennatus) is a target species of a deep trawl fishery in the Gulf of Alicante. This paper describes the fishery by following the activity of this trawl fleet between 1992 and 1999. Principal Components Analysis (PCA) of specific catch compositions identified five main components that explained 92% of the variability, and the catches were grouped into three main species: red shrimp, hake and blue whiting. Hierarchical Clustering Grouping of the percentage species catch ...
關鍵字: fishery
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 415265
194153
電子期刊
Yousri M.A. Welaya, and M. Mosleh, and Nader R. Ammar
Strong restrictions on emissions from marine power plants (particularly SOx, NOx) will probably be adopted in the near future. In this paper, a combined solid oxide fuel cell (SOFC) and gas turbine fuelled by natural gas is proposed as an attractive option to limit the environmental impact of the marine sector. It includes a study of a heat-recovery system for 18 MW SOFC fuelled by natural gas, to provide the electric power demand onboard commercial vessels. Feasible heat-recovery systems are in...
關鍵字: marine
出版: Elsevier
ISSN: 2092-6782
來源: DOAJ
System ID: 415264
194154
電子期刊
Olivier Laroche, and Susanna A. Wood, and Louis A. Tremblay, and Gavin Lear, and Joanne I. Ellis, and Xavier Pochon
Sequencing environmental DNA (eDNA) is increasingly being used as an alternative to traditional morphological-based identification to characterize biological assemblages and monitor anthropogenic impacts in marine environments. Most studies only assess eDNA which, compared to eRNA, can persist longer in the environment after cell death. Therefore, eRNA may provide a more immediate census of the environment due to its relatively weaker stability, leading some researchers to advocate for the use o...
關鍵字: offshore
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 415263
194155
電子期刊
T. Jilbert, and T. Jilbert, and E. Asmala, and E. Asmala, and E. Asmala, and C. Schröder, and R. Tiihonen, and R. Tiihonen, and J.-P. Myllykangas, and J.-P. Myllykangas, and J. J. Virtasalo, and A. Kotilainen, and P. Peltola, and P. Ekholm, and S. Hietanen, and S. Hietanen
Iron (Fe) plays a key role in sedimentary diagenetic processes in coastal systems, participating in various redox reactions and influencing the burial of organic carbon. Large amounts of Fe enter the marine environment from boreal river catchments associated with dissolved organic matter (DOM) and as colloidal Fe oxyhydroxides, principally ferrihydrite. However, the fate of this Fe pool in estuarine sediments has not been extensively studied. Here we show that flocculation processes along ...
關鍵字: estuarine
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 415262
194156
電子期刊
J. EVANS, and J. BARBARA, and P. J. SCHEMBRI
An updated review of marine alien species and other ‘newcomers’ recorded from the Maltese Islands is presented on account of new records and amendments to a previous review in 2007. Species were classified according to their establishment status (‘Questionable’, ‘Casual’, ‘Established’, ‘Invasive’) and origin (‘Alien’, ‘Range expansion’, ‘Cryptogenic’). A total of 31 species were added to the inventory, while 6 species have been removed, bringing the total number of species to 73. Of these, 66 a...
關鍵字: marine
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 415261
194157
電子期刊
S. Comeau, and R. C. Carpenter, and C. A. Lantz, and P. J. Edmunds
Ocean acidification (OA) poses a severe threat to tropical coral reefs, yet much of what is know about these effects comes from individual corals and algae incubated in isolation under high <i>p</i>CO<sub>2</sub>. Studies of similar effects on coral reef communities are scarce. To investigate the response of coral reef communities to OA, we used large outdoor flumes in which communities composed of calcified algae, corals, and sediment were combined to match the percentage cover of benthic commu...
關鍵字: coral
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 415260
194158
電子期刊
Alexander Mark Brown, and Alexander Mark Brown, and Lars eBejder, and Lars eBejder, and Kenneth Hugh Pollock, and Kenneth Hugh Pollock, and Simon James Allen, and Simon James Allen
Assessing the abundance of wildlife populations is essential to their effective conservation and management. Concerns have been raised over the vulnerability of tropical inshore dolphins in waters off northern Australia to anthropogenic impacts on local populations, yet a lack of abundance data precludes assessment of their conservation status and the management of threats. Using small vessels as cost-effective research platforms, photo-identification surveys and capture-recapture models were ap...
關鍵字: dolphin
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 415259
194159
電子期刊
J. Burkart, and M. D. Willis, and H. Bozem, and J. L. Thomas, and K. Law, and P. Hoor, and A. A. Aliabadi, and F. Köllner, and J. Schneider, and A. Herber, and J. P. D. Abbatt, and W. R. Leaitch
Motivated by increasing levels of open ocean in the Arctic summer and the lack of prior altitude-resolved studies, extensive aerosol measurements were made during 11 flights of the NETCARE July 2014 airborne campaign from Resolute Bay, Nunavut. Flights included vertical profiles (60 to 3000 m above ground level) over open ocean, fast ice, and boundary layer clouds and fogs. A general conclusion, from observations of particle numbers between 5 and 20 nm in diameter (<i>N</i><sub>5 − 20</sub>), is...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 415258
194160
電子期刊
Taru Olsson, and Matti Kämäräinen, and Darwin Santos, and Teija Seitola, and Heikki Tuomenvirta, and Riina Haavisto, and Waldo Lavado-Casimiro
Study region: The Chancay-Huaral (CH) coastal river basin in the Lima Region, Peru, between the Pacific Ocean and the Andean Cordillera. Study focus: Climate change impacts on annual and monthly discharges in the CH Basin are assessed for the future period 2051–2080. Hydrological modeling is sensitive to biases in input variables. Therefore, bias-corrected time series of temperature and precipitation from 31 General Circulation Models (GCMs) with the emission scenarios RCP4.5 and RCP8.5 (Represe...
關鍵字: coastal
出版: Elsevier
ISSN: 2214-5818
來源: DOAJ
System ID: 415257
194161
電子期刊
Naresh Nebhinani, and Surajit Ghatak, and Kuldeep Singh, and Sanjeev Misra, and Om Lata Bhagat, and Ritu Garg
<p>Background: Personal development is an ongoing but complex process and it is crucial for the medical educator to recognize the trait and design the training for optimal development of students. Though importance of human personality is widely recognized for functional efficiency of an individual and organization, but its recognition is grossly missing from medical curriculum. <br />Aim: To organize and evaluate the 'Personality Development Program' for medical and nursing students.<br />Metho...
關鍵字: pilot
出版: National Academy of Medical Sciences
ISSN: 0379-038X
來源: DOAJ
System ID: 415256
194162
電子期刊
M. R. van den Broeke, and E. M. Enderlin, and I. M. Howat, and P. Kuipers Munneke, and B. P. Y. Noël, and W. J. van de Berg, and E. van Meijgaard, and B. Wouters
We assess the recent contribution of the Greenland ice sheet (GrIS) to sea level change. We use the mass budget method, which quantifies ice sheet mass balance (MB) as the difference between surface mass balance (SMB) and solid ice discharge across the grounding line (<i>D</i>). A comparison with independent gravity change observations from GRACE shows good agreement for the overlapping period 2002–2015, giving confidence in the partitioning of recent GrIS mass changes. The estimated 1995 ...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1994-0416
來源: DOAJ
System ID: 415255
194163
電子期刊
Ping-Chen Wu, and Jiahn-Horng Chen
A numerical strategy is proposed for a viscous uniform flow past a 2-D partially cavitating hydrofoil placed at a finite depth from the free surface. The flow was modeled by the Reynolds-averaged Navier–Stokes (RANS) equations. A finite-volume method with the SIMPLE scheme and k-ε turbulence model were employed for computations. The “full cavitation model,” which included the effects of vaporization, noncondensible gases and compressibility, was incorporated in the computation of cavitating flow...
關鍵字: hydrofoil
出版: Elsevier
ISSN: 2468-0133
來源: DOAJ
System ID: 415254
194164
電子期刊
Susanne Eva Tanner, and Patrick Reis-Santos
Connectivity is a critical property of marine fish populations as it drives population replenishment, determines colonization patterns and the resilience of populations to harvest. Understanding connectivity patterns is particularly important in species that present ontogenetic migrations and segregated habitat use during their life history, such as marine species with estuarine nursery areas. Albeit challenging, fish movement can be estimated and quantified using different methodologies dependi...
關鍵字: fish
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 415253
194165
電子期刊
Alberto Serrano, and Francisco Sánchez, and Antonio Punzón, and Francisco Velasco, and Ignacio Olaso
Four deep sea fish and invertebrate assemblages from the northern Spanish slope were identified and related to geographic and bathymetric factors. The Peñas Cape comprises a boundary area splitting the more productive, wider and sandy western shelf from the less productive, narrow and muddy eastern part. The four faunal assemblages described were a shelf-slope transition assemblage (SST, 400-500 m); two upper slope assemblages (500-650 m), one corresponding to the western area of Cape Peñas and ...
關鍵字: sea
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 415252
194166
電子期刊
Alexander Krek, and Viktor Krechik, and Aleksandr Danchenkov, and Elena Krek
The detailed environmental survey of the coastal zone of the Kaliningrad Region northern coast was carried out. The pollutants distribution in the silty clay fraction and calculation of ecological indexes allowed the evaluation of distribution of potentially harmful elements (PHEs). The sources of pollution in the most intensively used areas were identified, and transit and accumulation zones were allocated. A large area of anomalous content of PHEs was revealed on the underwater coastal slope o...
關鍵字: coastal
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 415251
194167
電子期刊
Hshuan-Chen Liu, and Chun-Ju Chang, and Tsung-Han Yang, and Meng-Tsan Chiang
This study was designed to investigate the effect of Gelidium amansii (GA) on carbohydrate and lipid metabolism in rats with high fructose (HF) diet (57.1% w/w). Five-week-old male Sprague-Dawley rats were fed a HF diet to induce glucose intolerance and hyperlipidemia. The experiment was divided into three groups: (1) control diet group (Con); (2) HF diet group (HF); and (3) HF with GA diet group (HF + 5% GA). The rats were fed the experimental diets and drinking water ad libitum for 23 weeks. T...
關鍵字: algae
出版: Elsevier
ISSN: 1021-9498
來源: DOAJ
System ID: 415250
194168
電子期刊
Mark A. Linnell, and Katie Moriarty, and David S. Green, and Taal Levi
Pacific martens (Martes caurina humboldtensis) in coastal forests of Oregon and northern California in the United States are rare and geographically isolated, prompting a petition for listing under the Endangered Species Act. If listed, regulations have the potential to influence land-use decisions on public and private lands, but no estimates of population size, density, or viability of remnant marten populations are available for evaluating their conservation status. We used GPS and VHF teleme...
關鍵字: coastal
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 415249
194169
電子期刊
Safaa A. Abdel Ghani
The concentrations of trace metals (V, Al, Sn, As, and Se) were measured in seawater, sediments, and muscles of fish species collected from beaches of Marsa Matrouh, North West coast of Egypt. The decreasing trend of metals was observed in water as Al > Sn > As > V > Se and in sediment as Al > Sn > V > As > Se. The levels of dissolved V, Se and As were lower than the typical natural trace element concentration of seawater while, Al surpassed. Dissolved Sn concentration was higher than the backgr...
關鍵字: fish
出版: Elsevier
ISSN: 1687-4285
來源: DOAJ
System ID: 415248
194170
電子期刊
Joel Willitts
This article defines, explains and argues for the necessity of a post-supersessionistic hermeneutical posture towards the New Testament. The post-supersessionistic reading of the New Testament takes the Jewish nature of the apostolic documents seriously, and has as its goal the correction of the sin of supersessionism. While supersessionism theologically is repudiated in most corners of the contemporary church through official church documents, the practise of reading the New Testament continues...
關鍵字: fish
出版: AOSIS
ISSN: 0259-9422
來源: DOAJ
System ID: 415247
194171
電子期刊
A. Diedhiou, and J.-F. Mahfouf
The aim of this work is to compare the relative impact of land and sea surface anomalies on Sahel rainfall and to describe the associated anomalies in the atmospheric general circulation. This sensitivity study was done with the Météo-France climate model: ARPEGE. The sensitivity to land surface conditions consists of changes in the management of water and heat exchanges by vegetation cover and bare soil. The sensitivity to ocean surfaces consists in forcing the lower boundary of the model...
關鍵字: sea
出版: Copernicus Publications
ISSN: 0992-7689
來源: DOAJ
System ID: 415246
194172
電子期刊
Anja Bråthen Kristoffersen, and Lars Qviller, and Kari Olli Helgesen, and Knut Wiik Vollset, and Hildegunn Viljugrein, and Peder Andreas Jansen
The Norwegian government recently implemented a new management system to regulate salmon farming in Norway, aiming to promote environmentally sustainable growth in the aquaculture industry. The Norwegian coast has been divided into 13 production zones and the volume of salmonid production in the zones will be regulated based on salmon lice effects on wild salmonids. Here we present a model for assessing salmon louse-induced mortality of seaward-migrating post-smolts of Atlantic salmon. The model...
關鍵字: salmon
出版: Elsevier
ISSN: 1755-4365
來源: DOAJ
System ID: 415245
194173
電子期刊
Peter Francis Cowman
關鍵字: reef
出版: Frontiers Media S.A.
ISSN: 1664-8021
來源: DOAJ
System ID: 415244
194174
電子期刊
Rafael Vilhena Reis Neto, and Rilke Tadeu Fonseca de Freitas, and Moacyr Antonio Serafini, and Adriano Carvalho Costa, and Thiago Archangelo Freato, and Priscila Vieira Rosa, and Ivan Bezerra Allaman
The objective of this study was to verify which morphometric measures and ratios are more directly associated with the weight and body yields of rounded fish. A total of 225 specimens of rounded fish (59 pacus, 61 tambaquis, 52 tambacus and 53 paquis) with average weight of 972.43 g (±115.52 g) were sampled, stunned, slaughtered, weighed, measured, and processed for morphometric and processing yield analysis. The morphometric measures taken were: standard length (CP); head length (CC); head heig...
關鍵字: fish
出版: Sociedade Brasileira de Zootecnia
ISSN: 1516-3598
來源: DOAJ
System ID: 415243
194175
電子期刊
Luana S. F. Lins, and Tarso Costa
The population of Catapaguroides microps A. Milne-Edwards and Bouvier, 1892 in the Campos Basin was studied with an emphasis on its composition in the Northern and Southern parts of the Basin, the different gender sizes, sex ratio, and size class distribution. Specimens were collected under the "Program for the Environmental Characterization of the deep waters of the Campos Basin" ("Programa de Caracterização Ambiental das Águas Profundas da Bacia de Campos") in February and August 2003. A total...
關鍵字: sea
出版: Universidade de São Paulo
ISSN: 1679-8759
來源: DOAJ
System ID: 415242
194176
電子期刊
Lorena Carvalho Martiniano, and Cicero Welligton Brito Bezerra, and Edmar Pereira Marques, and Antonio Gouveia de Sousa, and Ridvan Nunes Fernandes, and Aldaléa Lopes Brandes Marques
Um novo método espectrofotométrico simples, sensível e com boa seletividade é apresentado para a determinação rápida de mercúrio (II) em nível de traços com 2-mercapto-5-metilbenzilimidazol (MMBI) como um novo reagente espectrofotométrico (lambda max = 320 nm), em um meio aquoso ligeiramente alcalino (tampão Britton-Robinson (BR) 0,04 M, pH 8,0). A reação é instantânea e a absorbância permanece estável por mais de 24 horas. O coeficiente de absorção molar encontrado foi de 2,71 x 10(4) L mol-1 c...
關鍵字: fish
出版: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
ISSN: 0101-2061
來源: DOAJ
System ID: 415241
194177
電子期刊
Dariane Beatriz Schoffen Enke, and Paulo Soares Lopes, and Henrique Augusto Kich, and Aline Paff Britto, and Marcela Soquetta, and Juvêncio Luís Osório Fernandes Pouey
Neste trabalho, foram avaliados o desempenho e o rendimento de carcaça em juvenis de jundiá Rhamdia quelen, alimentados com farinha de silagem química de rejeitos de pescado em substituição à levedura de cana, em dietas à base de ingredientes vegetais (dieta controle). Os 135 animais (peso médio inicial de 48,11&plusmn;5,54g) foram distribuídos em cinco tratamentos com três repetições ao acaso. Cada unidade de observação foi composta por um tanque circular (1000 litros) abastecido com 200 litros...
關鍵字: fish
出版: Universidade Federal de Santa Maria
ISSN: 0103-8478
來源: DOAJ
System ID: 415240
194178
電子期刊
Edna A. Cunha, and Roberto A. A. Carvalho, and Cassiano Monteiro-Neto, and Luiz Eduardo S. Moraes, and Maria Elisabeth Araújo
This study compared tidepool fish assemblages within and among habitats at Iparana and Pecém beaches, State of Ceará, Northeast Brazil, using visual census techniques. A total of 8,914 fishes, representing 25 families and 43 species were recorded. The most abundant taxon was Sparisoma spp, followed by Haemulon parra (Desmarest, 1823), Acanthurus chirurgus (Bloch, 1787) and Abudefduf saxatilis (Linnaeus, 1758). Haemulidae was the most abundant family in number of individuals, followed by Scaridae...
關鍵字: coastal
出版: Fundação Zoobotânica do Rio Grande do Sul
ISSN: 0073-4721
來源: DOAJ
System ID: 415239
194179
電子期刊
Jin Xiaoning, and Siegel David, and Weiss Brian A., and Gamel Ellen, and Wang Wei, and Lee Jay, and Ni Jun
A research study was conducted (1) to examine the practices employed by US manufacturers to achieve productivity goals and (2) to understand what level of intelligent maintenance technologies and strategies are being incorporated into these practices. This study found that the effectiveness and choice of maintenance strategy were strongly correlated to the size of the manufacturing enterprise; there were large differences in adoption of advanced maintenance practices and diagnostics and prognost...
關鍵字: pilot
出版: EDP Sciences
ISSN: 2265-4224
來源: DOAJ
System ID: 415238
194180
電子期刊
Cabrera C, and Casanova C, and Martín Y, and Mirabal V, and Sánchez MC, and Álvarez F, and Juliá G, and Cabrera-Navarro P, and García-Bello MA, and Marín JM, and de-Torres JP, and Divo M, and Celli B
Carlos Cabrera,1 Ciro Casanova,2 Yolanda Mart&iacute;n,3 Virginia Mirabal,3 Mar&iacute;a del Carmen S&aacute;nchez,4 Felisa &Aacute;lvarez,5 Gabriel Juli&aacute;,1 Pedro Cabrera-Navarro,1 Miguel &Aacute;ngel Garc&iacute;a-Bello,6 Jos&eacute; Mar&iacute;a Mar&iacute;n,7 Juan Pablo de-Torres,8 Miguel Divo,9 Bartolom&eacute; Celli9 1University Hospital of Gran Canaria Dr Negr&iacute;n, Respiratory Service, Las Palmas de Gran Canaria, Spain; 2University Hospital Nuestra Se&ntilde;ora de la Candelar...
關鍵字: pilot
出版: Dove Medical Press
ISSN: 1176-9106
來源: DOAJ
System ID: 415237
194181
電子期刊
Leonardo Baldaçara, and Thaynne Almeida Diniz, and Bruna Leal Parreira, and Jaqueline Jerônimo Milhomem, and Lincoln Jose Cueto de Almeida, and Camila Campitelli Fernandes
關鍵字: pilot
出版: Associação Brasileira de Psiquiatria (ABP)
ISSN: 1516-4446
來源: DOAJ
System ID: 415236
194182
電子期刊
I Nyoman Giri Putra, and Yuliana Fitri Syamsuni, and Beginer Subhan, and Made Pharmawati, and Hawis Madduppa
The Indo-Malay Archipelago is regarded as a barrier that separates organisms of the Indian and Pacific Oceans. Previous studies of marine biota from this region have found a variety of biogeographic barriers, seemingly dependent on taxon and methodology. Several hypotheses, such as emergence of the Sunda Shelf and recent physical oceanography, have been proposed to account for the genetic structuring of marine organisms in this region. Here, we used six microsatellite loci to infer genetic diver...
關鍵字: seagrass
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 415235
194183
電子期刊
E. LEFKADITOU, and M. CORSINI-FOKA, and G. KONDILATOS
Loliginid squids of the Sepioteuthis lessoniana complex are widely spread in the Indo-Pacific Ocean, where they constitute a commercially important resource for neritic fisheries. Sepioteuthis lessoniana is the only Lessepsian squid migrant till now, recorded for the first time in the Mediterranean in 2002 along the Turkish Levantine coasts. Two maturing males, with mantle lengths 193 mm and 244 mm, have been recently caught near the coasts of Rhodes Island (SE Aegean), extending the species dis...
關鍵字: squid
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 415234
194184
電子期刊
Akihiko Tsuji, and Nami Nishiyama, and Miki Ohshima, and Saori Maniwa, and Shuji Kuwamura, and Masataka Shiraishi, and Keizo Yuasa
Sea lettuce (Ulva pertusa) is a nuisance species of green algae that is found all over the world. East-Asian species of the marine gastropod, the sea hare Aplysia kurodai, shows a clear feeding preference for sea lettuce. Compared with cellulose, sea lettuce contains a higher amount of starch as a storage polysaccharide. However, the entire amylolytic system in the digestive fluid of A. kurodai has not been studied in detail. We purified α-amylases and α-glucosidases from the digestive fluid of ...
關鍵字: sea
出版: Wiley
ISSN: 2211-5463
來源: DOAJ
System ID: 415233
194185
電子期刊
Miquel Alcaraz
關鍵字: marine
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 415232
194186
電子期刊
Thomas E. Sather, and Conrad L. Woolsey, and Ronald D. Williams, Jr, and Marion W. Evans, Jr, and Fred Cromartie
Background: Energy drinks are popular beverages that can have adverse long-term health effects when consumed by children and adolescents. This study sought to determine if the age of first energy drink use in a U.S. military population is predictive of the maximum number of energy drinks consumed during a single day and/or single occasion (operationally defined as a couple of hours; e.g., a night out, during studying or sport session). Method: Student U.S. naval aviator and naval flight officers...
關鍵字: naval
出版: Elsevier
ISSN: 2352-8532
來源: DOAJ
System ID: 415231
194187
電子期刊
Samira Mohamadian, and Sohrab Rezvani Gilkolaei, and Mohamad Kazemian, and Abolghasem Kamali, and Mohamad Javad Taghavi, and Shaghayegh Rouholahi, and Faramarz Laloei
Genetic diversity of Vimba vimba persa was investigated using microsatellite markers from two regions of the Iranian coastline of southern Caspian sea (Havigh River in Guilan province, GorganRoud River in Golestan province). The purpose of this research was the study of Vimba vimba persa’s possible populations related to genetic diversity and population structure in the Caspian sea and introducing the useful genetic markers. To investigate the genetic structure of Vimba vimba persa populations, ...
關鍵字: sea
出版: University of Isfahan
ISSN: 2008-8906
來源: DOAJ
System ID: 415230
194188
電子期刊
C. Heinze, and S. Meyer, and N. Goris, and L. Anderson, and R. Steinfeldt, and N. Chang, and C. Le Quéré, and D. C. E. Bakker
Carbon dioxide (CO<sub>2</sub>) is, next to water vapour, considered to be the most important natural greenhouse gas on Earth. Rapidly rising atmospheric CO<sub>2</sub> concentrations caused by human actions such as fossil fuel burning, land-use change or cement production over the past 250 years have given cause for concern that changes in Earth's climate system may progress at a much faster pace and larger extent than during the past 20 000 years. Investigating global carbon cycle pathways and...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 2190-4979
來源: DOAJ
System ID: 415229
194189
電子期刊
O. Reñones, and B. Morales-Nin, and S. Deudero
The pilotfish (Naucrates ductor) is mainly caught as a by-catch of the dolphinfish fishery using FADs deployed around Mallorca (western-Mediterranean) from the end of August to December. The age and growth parameters of this species were estimated by length frequency analysis and daily growth increments observed in the otoliths. To validate the daily formation of the ring observed in the sagittae otoliths, a marking otoliths experiment with SrCl2 was carried out with juvenile specimens kept in l...
關鍵字: fishery
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 415228
194190
電子期刊
Kwang Hee Ko
In this study, geometric modeling techniques and their application to ship modeling and design are presented. Traditionally the hull shape is defined by using curves called the lines and various necessary computations are performed based on the discrete points obtained from the lines. However, some applications find difficulty in using the lines such as seakeeping analysis, which requires the computation of wetted part that is changing dynamically over time. To overcome such a problem and increa...
關鍵字: ship
出版: Elsevier
ISSN: 2092-6782
來源: DOAJ
System ID: 415227
194191
電子期刊
Sansa J., and Prados J.
關鍵字: navigation
出版: Universidad de Valencia. Departamento de Metodología de las Ciencias del Comportamiento
ISSN: 0211-2159
來源: DOAJ
System ID: 415226
194192
電子期刊
Elvira A. González Oliveira, and Darlo Luis Patronelli, and Mauricio O. Zamponi
It was made the characterization of marginal sphincter to the species Phymactis clematis (Drayton in Dana, 1849) and Aulactinia marplatensis (Zamponi, 1977), from intertidal ecosystem through their morphogical and functional study. The species P. clematis has a circumscript sphincter of palmate type. This muscle is constituted by a mesogloeal axis and several mesogloeal subaxes. Axis as well as subaxes give a support to the endoderm which border is smooth. Aulactinia marplatensis has a circunscr...
關鍵字: sea
出版: Fundação Zoobotânica do Rio Grande do Sul
ISSN: 0073-4721
來源: DOAJ
System ID: 415225
194193
電子期刊
Antônio Sérgio Farias Castro, and Marcelo Freire Moro, and Marcelo Oliveira Teles de Menezes
O Litoral Setentrional do Nordeste (LSN) por sua localização geográfica apresenta clima mais quente e seco do que na costa leste do Brasil. Por sua proximidade com a caatinga e o cerrado, o LSN permite a co-existência de espécies destes Domínios conjuntamente com espécies de restinga, em diferentes formações, constituindo um Complexo Vegetacional. Apesar da grande importância ecológica e botânica deste ecótono, existem poucos estudos sobre a flora regional. O objetivo deste trabalho foi aprofund...
關鍵字: coastal
出版: Sociedade Botânica do Brasil
ISSN: 0102-3306
來源: DOAJ
System ID: 415224
194194
電子期刊
Luz-Marina Rojas, and Claunis Mata, and Aridays Oliveros, and Raquel Salazar-Lugo
Colossoma macropomum es uno de los peces tropicales de agua dulce con mayor éxito en el cultivo en aguas continentales tropicales. Se realizó una evaluación histológica de branquias, hígado y riñón de este pez expuesto a tres temperaturas (T18, T29 y T35ºC). Se utilizaron 18 ejemplares juveniles con índices biométricos de 17.87±7.88cm y 87.69±34.23g. Los análisis histológicos fueron hechos de acuerdo a técnicas previamente descritas. Se encontró que las branquias, el hígado y el riñón de los pec...
關鍵字: fish
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 415223
194195
電子期刊
Fatih Alkan, and Arzu Kotan , and Nurullah Ozdemir
In this study we have devoloped and validated a confirmatory analysis method for nitrofuran metabolites, which is in accordance with European Commission Decision 2002/657/EC requirements. Nitrofuran metabolites in honey, milk, poultry meat and fish samples were acidic hydrolised followed by derivatisation with nitrobenzaldehyde and liquid-liquid extracted with ethylacetate. The quantitative and confirmative determination of nitrofuran metbolites was performed by liquid chromatography/electrospra...
關鍵字: fish
出版: Ss.Cyril and Methodius University, Skopje
ISSN: 1409-7621
來源: DOAJ
System ID: 415222
194196
電子期刊
Tadeusz Penczak, and Angelo A. Agostinho, and Norma S. Hahn
The frequency of nine food types in the guts of 58 fish species from the Paraná River and its floodplain was compared using similarity definition. A synthetic table ordered on the basis of this definition, with fish species on axis y, and food types on axis x, enabled easy reading numerous kinds of information on feeding ecology of fish in the catchment. For example: 1) which fish species were generalists, specialists or opportunists, 2) those classified as herbivorous species consumed small amo...
關鍵字: fish
出版: Instituto de Tecnologia do Paraná (Tecpar)
ISSN: 1516-8913
來源: DOAJ
System ID: 415221
194197
電子期刊
Marcelo Ricardo Vicari, and Mara Cristina de Almeida, and Luiz Antonio Carlos Bertollo, and Orlando Moreira-Filho, and Roberto Ferreira Artoni
We used differential staining techniques (BSG, GTG, AgNO3, DAPI and CMA3 banding) and fluorescent in situ hybridization (FISH) with 5S and 18S probes to investigated the karyotypic and cytogenetic chracteristics of Prochilodus lineatus specimens from a population in Vila Velha state park (Parque Estadual de Vila Velha, Ponta Grossa, Paraná state, southern Brazil). The specimens studied showed the same karyotype as that found in other P. lineatus populations, i.e. 2n = 54 biarmed chromosomes (40m...
關鍵字: fish
出版: Sociedade Brasileira de Genética
ISSN: 1415-4757
來源: DOAJ
System ID: 415220
194198
電子期刊
Sergio Bogan, and Federico L. Agnolin
Se describe un conjunto de dientes fósiles que proceden de sedimentos marinos de la Formación Jagüel (Maastrichtiano), de la localidad de Bajo Trapalcó, provincia de Río Negro, Patagonia, Argentina. La ictiofauna aquí descripta es la primera para la Formación y se compone de unos seis taxones diferentes de Chondrichthyes (Serratolamna serrata, Squalicorax pristodontus, Cretalamna appendiculata, Carcharias sp., Odontaspis sp. y cf. Pseudohypolophus mcnultyi) y dos Teleostei del género Enchodus (a...
關鍵字: marine
出版: Universidade de São Paulo
ISSN: 0031-1049
來源: DOAJ
System ID: 415219
194199
電子期刊
Marko Vrabec, and Galena Jordanova
We analyse systematic fractures occurring in sandstone beds in Eocene flsch of the Slovenian coastal area. Two nearly perpendicular fracture sets were identifid: fractures F1 are generally NW-SE oriented, wellexpressed and predominately planar, whereas fractures F2 are NE-SW-striking, shorter, more irregular in shape, and terminate against the F1 set. The average orientation of both sets does not change signifiantly in a coastal transect crossing all principal structural domains of the area. ...
關鍵字: coastal
出版: Geological Survey of Slovenia
ISSN: 0016-7789
來源: DOAJ
System ID: 415218
194200
電子期刊
A. Devasthale, and J. Sedlar, and T. Koenigk, and E. J. Fetzer
The record sea ice minimum (SIM) extents observed during the summers of 2007 and 2012 in the Arctic are stark evidence of accelerated sea ice loss during the last decade. Improving our understanding of the Arctic atmosphere and accurate quantification of its characteristics becomes ever more crucial, not least to improve predictions of such extreme events in the future. In this context, the Atmospheric Infrared Sounder (AIRS) instrument onboard NASA's Aqua satellite provides crucial insights due...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 415217