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203351
電子期刊
. Widanarni, and Sugiyo Hadi Pranoto, and . Sukenda
<p>The aim of this study was to obtain nitrification and denitrification bacteria and tested its activity in reducing the ammonia, nitrite and nitrate compounds in culture medium of Pacific white shrimp Litopenaeusvannamei. The research was conducted through several steps: 1) Isolation of nitrification and denitrification bacteria from ponds and mangrove areas, 2) Selection of nitrification and denitrification bacteria  in vitro, and 3) test of the nitrication and denitrification bacteria activi...
關鍵字: shrimp
出版: Asosiasi Sains Akuakultur Indonesia
ISSN: 1412-5269
來源: DOAJ
System ID: 424487
203352
電子期刊
Andrée D. Gendron, and David J. Marcogliese
As they integrate into recipient food webs, invasive exotic species may influence the population dynamics of native parasites. Here we assess the potential impact of the Eurasian round goby (Neogobius melanostomus) on the abundance of eyeflukes of the genus Diplostomum, which are common parasites in fishes of the St. Lawrence River (Canada). Analyses of data collected over nearly two decades revealed that the infection levels in three native fish [spottail shiner (Notropis hudsonius), golden shi...
關鍵字: fish
出版: Elsevier
ISSN: 2213-2244
來源: DOAJ
System ID: 424486
203353
電子期刊
Maria Vittoria Spissu
I retabli sardi tra Quattro e Cinquecento documentano la stratificazione di influenze che giungono da Valencia, Barcellona, Maiorca e Napoli. Tra le sollecitazioni importate vi sono stilemi flandro-iberici e forme gotico-catalane, alle quali subentrano timidamente singolari italianismi e aggiornamenti alla maniera moderna. Caso eccezionale è il Maestro di Ozieri, in quanto sfugge apparentemente alla dimensione delle rotte mediterranee che partono dai consolidati centri-guida. L'isola, definita s...
關鍵字: navigation
出版: eum edizioni università di macerata
ISSN: 2039-2362
來源: DOAJ
System ID: 424485
203354
電子期刊
John Joseph Cawley, and Giuseppe Marramà, and Giorgio Carnevale, and Jürgen Kriwet
Background The pycnodontiform fish Pycnodus is one of the representatives of the highly diverse actinopterygian fish fauna from the early Eocene Bolca Lagerstätte, representing one of the youngest and thus last occurrences of this extinct neopterygian clade. This genus has historically been used as a wastebasket taxon in regards to poorly known pycnodontiform fossils. Authors have argued over the specific status of the Bolca Lagerstätte Pycnodus in terms of how many species are contained within ...
關鍵字: fish
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 424484
203355
電子期刊
C. Lauritano, and M. Ruocco, and E. Dattolo, and M. C. Buia, and J. Silva, and R. Santos, and I. Olivé, and M. M. Costa, and G. Procaccini
Submarine volcanic vents are being used as natural laboratories to assess the effects of increased ocean acidity and carbon dioxide (CO<sub>2</sub>) concentration on marine organisms and communities. However, in the vicinity of volcanic vents other factors in addition to CO<sub>2</sub>, which is the main gaseous component of the emissions, may directly or indirectly confound the biota responses to high CO<sub>2</sub>. Here we used for the first time the expression of antioxidant and stress-relat...
關鍵字: submarine
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 424483
203356
電子期刊
Piero Addis, and Marco Secci, and Angelo Cau
From April to June Atlantic bluefin tuna, Thunnus thynnus, migrate along the western Sardinian coastline in a southward direction, where they are intercepted by the trap fishery. Fishermen claim that Mistral episodes facilitate the entry of tuna schools towards the traps, thus increasing capture rates. To test the fishermen’s hypothesis we conducted underwater visual counts of tuna in the trap chambers and analysed these data under the effect of wind. The results indicate a “stair-step” pattern ...
關鍵字: fishery
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 424482
203357
電子期刊
K. Becker, and V. Wulfmeyer, and T. Berger, and J. Gebel, and W. Münch
We present a comprehensive, interdisciplinary project which demonstrates that large-scale plantations of <i>Jatropha curcas</i> – if established in hot, dry coastal areas around the world – could capture 17–25 t of carbon dioxide per hectare per year from the atmosphere (over a 20 yr period). Based on recent farming results it is confirmed that the <i>Jatropha curcas</i> plant is well adapted to harsh environments and is capable of growing alone or in combination with other tree and shrub speci...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 2190-4979
來源: DOAJ
System ID: 424481
203358
電子期刊
Francisco Mattioli
The goal of this study was to provide the first scientific data of the intertidal ichthyofauna community of Peniche. In order to have an accurate assessment, anesthetics were used, since this method is more effective than visual census. Therefore, the ideal concentration of clove oil to be used as anesthetics for local rock pool fish was tested. Through laboratory experiments with some of the most common species in the area, the concentration 30 mg.L-1was considered ideal. <br/>A total of 4 rock...
關鍵字: fish
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 424480
203359
電子期刊
Azam Moghimi, and Mohammad Afsharnasab, and Aghil Dashtiannsab, and Mehrzad Mesbah, and Vahid Yeganeh
Abstract Background: Rapid development of shrimp aquaculture has resulted in widespread use of antibiotics for preventing and curing diseases. In aquaculture, particularly shrimp hatcheries antibiotics are routinely used at therapeutic levels to treat disease and at sub-therapeutic levels as prophylactic agents to increase feed efficiency. Antibiotic residues in the environment are likely to lead to the development and maintenance of antibiotic resistance in microbial populations. The aim of thi...
關鍵字: shrimp
出版: Bushehr University of Medical Sciences
ISSN: 1735-4374
來源: DOAJ
System ID: 424479
203360
電子期刊
Erich Roeckner, and Thorsten Mauritsen, and Renate Brokopf
The impact of melt ponds on Arctic sea ice is estimated from model simulations of the historical and future climate. The simulations were performed with and without the effect of melt ponds on sea ice melt, respectively. In the last thirty years of the historical simulations, melt ponds develop predominantly in the continental shelf regions and in the Canadian archipelago. Accordingly, the ice albedo in these regions is systematically smaller than in the no-pond simulations, the sea ice melt is ...
關鍵字: sea
出版: American Geophysical Union (AGU)
ISSN: 1942-2466
來源: DOAJ
System ID: 424478
203361
電子期刊
Marcia Foster Mesko, and Isis Gonçalves Toralles, and Marcelo Guerreiro Crizel, and Vanize Caldeira Costa, and Natanael Rodrigo Xavier Pires, and Claudio Martin Pereira de Pereira, and Rochele Sogari Picoloto, and Paola Azevedo Mello
A method based on microwave-induced combustion (MIC) was applied for the decomposition of different types of edible seaweed (Nori, Hijiki and Wakame) for subsequent determination of bromine and iodine by inductively coupled plasma mass spectrometry (ICP-MS). Decomposition of 500 mg of each sample was achieved in less than 30 min. A single and diluted solution (150 mmol L-1 (NH4)2CO3) was used for the absorption of both analytes and a reflux step of 5 min was applied to improve analyte recoveries...
關鍵字: alga
出版: Sociedade Brasileira de Química
ISSN: 0100-4042
來源: DOAJ
System ID: 424477
203362
電子期刊
Augusto Cocuzza das Eiras, and Gilberto Cezar Pavanelli, and Ângela Teresa Silva e Souza, and Ricardo Massato Takemoto, and Maria José Tavares Ranzani de Paiva
Em fevereiro de 1994 e março de 1995, foram analisados 144 exemplares pertencentes a 20 espécies mais representativas da bacia do rio Paraná, Estado do Paraná e Mato Grosso do Sul, Brasil. Retirou-se sangue para as determinações de: número de eritrócitos; hematócrito; taxa de hemoglobina; contagem diferencial dos leucócitos e cálculo dos índices hematimétricos absolutos: volume corpuscular médio, hemoglobina corpuscular média e concentração de hemoglobina corpuscular média. Para <em>P. lineatus<...
關鍵字: fish
出版: Eduem - Editora da Universidade Estadual de Maringá
ISSN: 1679-9283
來源: DOAJ
System ID: 424476
203363
電子期刊
Joanna Silva Santos, and Gisanara Dors, and Débora de Oliveira, and Soeli Francisca Mazzini Monte Blanco, and José Vladimir de Oliveira, and Agenor Furigo Júnior, and Jorge Luiz Ninow, and Maria Manuela Camino Feltes
<abstract language="eng">Omega-3 enriched partial acylglycerols are beneficial for human health. The aim of this study was to obtain monoacylglycerols (MAG) and diacylglycerols (DAG) by means of glycerolysis of fish oil catalyzed by a lipase from Rhizomucor miehei in the presence of food grade surfactants (Tween 65, 80 or 85). Glycerolysis was successful in the reaction media for all the tested surfactants, showing their potential for use as additives in such a system. The best results, however,...
關鍵字: fish
出版: Sociedade Brasileira de Química
ISSN: 0100-4042
來源: DOAJ
System ID: 424475
203364
電子期刊
Ali S. Basaham
Interaction between continental and marine end-members gives rise to thenatural biogeochemical processes in Sharm Al-Kharrar, a lagoon in the arid RedSea region. Twenty-nine surface sediment samples were collected from the areaand their mud fraction analysed for grain size, OC, CaCO$_3$, mineralogy andelemental composition. The mud fraction consisted of a mixture ofsiliciclastic/calcareous materials, dominated by silt size materials andcharacterised by low OC (average 0.71% $pm$0.13); CaCO$_3$ ...
關鍵字: coastal
出版: Elsevier
ISSN: 0078-3234
來源: DOAJ
System ID: 424474
203365
電子期刊
Annica Charlotte Sandström, and Carl Vilhelm Rova
The challenge of establishing adaptive management systems is a widely discussed topic in the literature on natural resource management. Adaptive management essentially focuses on achieving a governance process that is both sensitive to and has the capacity to continuously react to changes within the ecosystem being managed. The adoption of a network approach that perceives governance structures as social networks, searching for the kind of network features promoting this important feature, has b...
關鍵字: fish
出版: Utrecht University Library Open Access Journals (Publishing Services)
ISSN: 1875-0281
來源: DOAJ
System ID: 424473
203366
電子期刊
Gloria L. Gallardo Fernández, and Wolfgang Stotz, and Jaime Aburto, and Carolin Mondaca, and Karoll Vera
Territorial User Rights in Fisheries (TURFs) have spread in Chile, since the late 1990s, in the form of commons institutions. TURFs are presented by some scholars as a social-ecological success; by others as showing economic and compliance problems. Studies looking at the material conditions in which fishers produce and reproduce their livelihoods, and in which TURFs emerge, are scarcer. Ostrom’s theory on the commons claims that certain collective action conditions have to be met to become thri...
關鍵字: coastal
出版: Utrecht University Library Open Access Journals (Publishing Services)
ISSN: 1875-0281
來源: DOAJ
System ID: 424472
203367
電子期刊
James Barclay Frey, and Fikret Berkes
The marine aquarium trade has played an important role in shaping the ecological state of coral reefs in Indonesia and much of the Asia-Pacific. The use of cyanide by ornamental fishers in Buleleng District, Bali, in the 1980s and 1990s has resulted in a precipitous decline in the ecological health of reefs. Cyanide-free harvesting techniques were introduced after 2000, along with reef restoration measures. This paper examines social and ecological processes in the fishing village of Les, Bali, ...
關鍵字: coral
出版: Utrecht University Library Open Access Journals (Publishing Services)
ISSN: 1875-0281
來源: DOAJ
System ID: 424471
203368
電子期刊
Yamin Bayazid, and Takayuki Miyanishi, and Chieko Umetsu, and Hironori Hamasaki
A collective floodplain aquaculture (FPA) management approach, developed in the Daudkandi sub-district of Bangladesh, has become popular among local landowners of floodplains for managing aquacultural operation in their lands. Taking inspiration from a small-scale FPA formed by landowners, an NGO modernized the approach when it collaborated with the community in applying the management approach in a larger floodplain in 1996. Since then, the success of the early FPA resulted in proliferation of ...
關鍵字: aquaculture
出版: Utrecht University Library Open Access Journals (Publishing Services)
ISSN: 1875-0281
來源: DOAJ
System ID: 424470
203369
電子期刊
Axel Wolf, and Laura Liesinger, and Stefan Spoerk, and Matthias Schittmayer, and Doris Lang-Loidolt, and Ruth Birner-Gruenberger, and Peter V. Tomazic
Abstract Technical advances including liquid chromatography–tandem mass spectrometry and its data analysis enable detailed proteomic analysis of the nasal mucus. Alterations of the nasal mucus proteome may provoke substantial changes of the nasal physiology and have already been associated with rhinologic diseases such as allergic rhinitis. This study was conducted as a pilot study to map the olfactory cleft proteome using current techniques for proteomic analysis. Furthermore, we aimed to inves...
關鍵字: pilot
出版: Nature Publishing Group
ISSN: 2045-2322
來源: DOAJ
System ID: 424469
203370
電子期刊
Katrin Besser, and Graham P. Malyon, and William S. Eborall, and Giovanni Paro da Cunha, and Jefferson G. Filgueiras, and Adam Dowle, and Lourdes Cruz Garcia, and Samuel J. Page, and Ray Dupree, and Marcelo Kern, and Leonardo D. Gomez, and Yi Li, and Luisa Elias, and Federico Sabbadin, and Shaza E. Mohamad, and Giovanna Pesante, and Clare Steele-King, and Eduardo Ribeiro de Azevedo, and Igor Polikarpov, and Paul Dupree, and Simon M. Cragg, and Neil C. Bruce, and Simon J. McQueen-Mason
Marine woodborers can digest woody biomass without the help of gut microbiota but the mechanism has remained unclear. Here, the authors provide evidence that the woodborer’s respiratory protein hemocyanin plays a central role in wood digestion and may offer a route toward biorefining of woody plant biomass.
關鍵字: marine
出版: Nature Publishing Group
ISSN: 2041-1723
來源: DOAJ
System ID: 424468
203371
電子期刊
van West Pieter, and Waugh Mark E, and Gajendran Kamal, and Tian Miaoying, and Torto-Alalibo Trudy, and Kamoun Sophien
<p>Abstract</p> <p>Background</p> <p>The oomycete <it>Saprolegnia parasitica </it>is one of the most economically important fish pathogens. There is a dramatic recrudescence of <it>Saprolegnia </it>infections in aquaculture since the use of the toxic organic dye malachite green was banned in 2002. Little is known about the molecular mechanisms underlying pathogenicity in <it>S. parasitica </it>and other animal pathogenic oomycetes. In this study we used a genomics approach to gain a first insigh...
關鍵字: fish
出版: BMC
ISSN: 1471-2180
來源: DOAJ
System ID: 424467
203372
電子期刊
Osborne Nicholas J, and Shaw Glen R
<p>Abstract</p> <p>Background</p> <p>Anecdotal evidence reported an outbreak of symptoms on Fraser Island during the late 1990s similar to those expected from exposure to dermotoxins found in the cyanobacterium <it>L. majuscula</it>. This coincided with the presence of a bloom of <it>L. majuscula</it>.</p> <p>Methods</p> <p>Records from the Fraser Island National Parks First aid station were examined. Information on cyanobacterial blooms at Fraser Island were obtained from Queensland National Pa...
關鍵字: marine
出版: BMC
ISSN: 1471-5945
來源: DOAJ
System ID: 424466
203373
電子期刊
CARLOS E. RIQUELME, and RUBÉN E. AVENDAÑO-HERRERA
El presente estudio tiene como objetivo revisar el conocimiento generado sobre el rol que juegan las interacciones bacteria-microalga en ambientes marinos y dulceacuícolas, definiendo las posibles aplicaciones que puede tener el conocimiento de estas interacciones en el manejo de las aguas costeras y sistemas acuícolas. Los antecedentes proporcionados en este análisis permiten sugerir que bacterias y/o microalgas, constituyen una alternativa para el control de proliferaciones de bacterias y fito...
關鍵字: aquatic
出版: BMC
ISSN: 0716-078X
來源: DOAJ
System ID: 424465
203374
電子期刊
Young-Sang Kim, and Sun Joo Park
Abstract Gliotoxin has been recognized as an immunosuppressive agent for a long time. Recently, it was reported to have antitumor properties. However, the mechanisms by which it inhibits tumors remain unclear. Here, we showed that gliotoxin isolated from the marine fungus Aspergillus fumigatus inhibited proliferation and induced apoptosis in HT1080 human fibrosarcoma cells. Gliotoxin repressed phosphorylation-dependent degradation of IκB-α, an antagonist of nuclear factor kappa B (NF-κB), which ...
關鍵字: marine
出版: BMC
ISSN: 2234-1757
來源: DOAJ
System ID: 424464
203375
電子期刊
Gladstone Sagada, and Jianming Chen, and Binqian Shen, and Aixia Huang, and Lihui Sun, and Jianhu Jiang, and Chunhua Jin
A 3 × 3 factorial feeding trial was conducted to evaluate the production response of juvenile northern snakehead fish (Channa argus). Nine diets containing 3 protein levels (45%, 48% and 51%) and 3 lipid levels (9%, 12% and 15%) were formulated and fed to triplicate groups of juvenile northern snakehead (15.78 ± 0.09 g/fish) for 8 weeks. The formulated diets were named as P45L9, P45L12, P45L15, P48L9, P48L12, P48L15, P51L9, P51L12 and P51L15 (P-Protein, L-Lipid), respectively. Fish fed diets wit...
關鍵字: fish
出版: KeAi
ISSN: 2405-6545
來源: DOAJ
System ID: 424463
203376
電子期刊
Lee Mee Ho, and Shu Li Chui, and Siew Chen Hum, and Johnny Qi Ming Foo, and Stephanie Man Chung Fook-Chong, and Shaw Fong Chong, and Man Geng, and Kim Gek Loh, and Kin Yee Loh, and Shaw Ni Lee, and Su Ling Yu, and Tze Tein Yong
Objective: To evaluate the effect of acupuncture treatment on semen parameters and the proportion of mature and functional sperm as measured by using sperm-hyaluronan binding assay (HBA) in subfertile Singapore men. Methods: Singaporean male subjects undergoing subfertility investigation were enrolled prospectively in this pilot study. Each subject received acupuncture treatment at fixed acupoints and two acupuncture sessions per week for 10 weeks. A total of five semen samples were obtained fro...
關鍵字: pilot
出版: Wolters Kluwer Medknow Publications
ISSN: 2305-0500
來源: DOAJ
System ID: 424462
203377
電子期刊
Dina C. Janse van Rensburg, and Catharina C. Grant, and Audrey Jansen van Rensburg, and Roelf P.G. Botha, and Paola S. Wood, and Kim Nolte, and Lizelle Fletcher, and Peet J. du Toit, and Michael S. Pepper, and Pieter E. Kruger
Background: The FitTrack Index is a web-based programme developed in South Africa and widely used by athletes to indicate their fitness. A need exists for a self-managed, noninvasive tool to evaluate and categorise health-related fitness in different population groups. The aim of this study was to compare the FitTrack Index with a reliable measure of cardio-respiratory fitness as indicated by maximal oxygen uptake (direct VO2max). Methods & results: During a 12-week cross-sectional, descriptive ...
關鍵字: pilot
出版: AOSIS
ISSN: 1025-9848
來源: DOAJ
System ID: 424461
203378
電子期刊
Santiago Cueto Rúa, and Nicolás Herrera, and Emmanuel Kahan, and Andrea Raina, and Mariana Vila, and Margarita Merbilhaá
“El conocimiento antropológico en el marco que la justa memoria sea tanto un factor de justicia como un factor que nos libere para que no quedemos presos del pasado”, entrevista a Henry Rousso realizada por Santiago Cueto Rúa, Nicolás Herrera, Emmanuel Kahan, Andrea Raina y Mariana Vila. Traducción de: Margarita Merbilhaá.
關鍵字: sea
出版: Universidad Nacional de La Plata
ISSN: 1852-1606
來源: DOAJ
System ID: 424460
203379
電子期刊
Boo Won Kim, and Min Kyoung Song, and Sochung Chung, and Kyo Sun Kim
PurposeSomatic growth is an important indicator of health in children. Adequate organ growth is essential in growth and directly related to body growth. We consider renal length as a surrogate of organ growth in growing children. Measurement of weight, height, and many anthropometric indices, such as body surface area (BSA), body mass index (BMI), and Rohrer and Kaup indices, are used to evaluate growth status. The aim of this study was to evaluate the association between renal length and somati...
關鍵字: pilot
出版: Korean Pediatric Society
ISSN: 1738-1061
來源: DOAJ
System ID: 424459
203380
電子期刊
M. David, and R.M. Kartheek
Aquatic ecosystems in areas with intense mining activity are often subject to cyanide contamination; the present study was aimed to evaluate the harmful effects of sodium cyanide on histoarchitechtural aspect of spleen of freshwater fish Cyprinus carpio using an in vivo approach. The fishes were exposed to a sublethal concentration of 0.2 mg/L of sodium cyanide for duration of 10 and 20 days and were further allowed to undergo recovery for 14 days in a toxicant free medium. From the present inve...
關鍵字: fish
出版: Tripoli University
ISSN: 2218-6050
來源: DOAJ
System ID: 424458
203381
電子期刊
M.T. de Mello, and A.M. Esteves, and M.L.N. Pires, and D.C. Santos, and L.R.A. Bittencourt, and R.S. Silva, and S. Tufik
Flight safety is one of the most important and frequently discussed issues in aviation. Recent accident inquiries have raised questions as to how the work of flight crews is organized and the extent to which these conditions may have been contributing factors to accidents. Fatigue is based on physiologic limitations, which are reflected in performance deficits. The purpose of the present study was to provide an analysis of the periods of the day in which pilots working for a commercial airline p...
關鍵字: pilot
出版: Associação Brasileira de Divulgação Científica
ISSN: 0100-879X
來源: DOAJ
System ID: 424457
203382
電子期刊
S.R. Marchi, and R.A. Pitelli
O objetivo deste trabalho foi obter equações que, através de parâmetros lineares dimensionais do limbo e do pecíolo, permitam estimar a área foliar do limbo e a área externa do pulvino de Eichhornia crassipes. Para isso, estudaram-se correlações entre a área foliar real e os parâmetros dimensionais do limbo foliar, como o comprimento ao longo da nervura principal (C) e a largura máxima (L) perpendicular ao eixo principal, assim como correlações entre a área externa real e o comprimento máximo (C...
關鍵字: aquatic
出版: Sociedade Brasileira da Ciência das Plantas Daninhas
ISSN: 0100-8358
來源: DOAJ
System ID: 424456
203383
電子期刊
José N Álvarez-Cadena, and Uriel Ordóñez-López, and Alma Rosa Almaral-Mendivil, and Amira Uicab-Sabido
Zooplankton sampling was carried out monthly from January to December 1990 at station A near the coastline, and station B near the reef barrier, in a tropical coral reef lagoon in the Mexican Caribbean Sea. Samplings were made at midnight, near surface, with a conical net (mouth 0.40 m, mesh 330 µm) for 10 min. Salinity varied from 35.1 to 36.3 psu and temperature from 26.3 to 30.2 ºC. The Bray-Curtis test applied to these results has defined two seasons: the dry season from November to May, and...
關鍵字: coral
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 424455
203384
電子期刊
Rodrigo Yumi Fujimoto, and Sérgio Henrique Canello Schalch, and Faro Conceição Paiva, and Andresa de Mello, and Maurício Laterça Martins, and Neidson Carneiro Colombano
O presente trabalho foi desenvolvido na Estação de Piscicultura da Companhia Energética de Minas Gerais, no reservatório de Volta Grande, Estado de Minas Gerais, Brasil. Foram capturados bimestralmente, com auxílio de rede e anzol, 70 corvinas de água doce, <em>Plagioscion squamosissimus</em>, e 66 tucunarés, <em>Cichla ocellaris</em>, entre abril de 2000 e abril de 2001. Os maiores valores de prevalência do helminto identificado como <em>Diplostomum</em> (A.) <em>compactum</em>, no globo ocular...
關鍵字: fish
出版: Eduem - Editora da Universidade Estadual de Maringá
ISSN: 1679-9283
來源: DOAJ
System ID: 424454
203385
電子期刊
F.T. Carvalho, and E.D. Velini, and A.L. Cavenaghi, and E. Negrisoli, and R.M. Castro
As plantas aquáticas são estudadas como um efeito do desequilíbrio causado pela poluição e/ou alagamento dos rios. A quantidade excessiva de plantas, conseqüente desse desequilíbrio, dificulta a navegação e a produção de energia elétrica. O objetivo deste trabalho foi identificar as principais plantas aquáticas do rio Tietê e relacioná-las com a turbidez da água dos diferentes reservatórios. Foram avaliados todos os focos de vegetação aquática emersa, flutuante e submersa, presentes em cada rese...
關鍵字: aquatic
出版: Sociedade Brasileira da Ciência das Plantas Daninhas
ISSN: 0100-8358
來源: DOAJ
System ID: 424453
203386
電子期刊
FATURRAHMAN, and ANJA MERYANDINI, and MUHAMMAD ZAIRIN JUNIOR, and IMAN RUSMANA
Faturrahman, Meryandini A, Junior MZ, Rusmana I (2011) Isolation and identification of an agar-liquefying marine bacterium and some properties of its extracellular agarases. Biodiversitas 12: 192-197. A new agar-liquefying bacterium, designated Alg3.1, was isolated from Gracilaria samples collected from the Kuta Coast at Central Lombok in West Nusa Tenggara and was identified as Aeromonas sp. on the basis of morphology, biochemical-physiological character and 16S rDNA gene sequencing. The bacter...
關鍵字: marine
出版: MBI & UNS Solo
ISSN: 1412-033X
來源: DOAJ
System ID: 424452
203387
電子期刊
Nestel D, and Gray K, and Simmons M, and Pritchard SA, and Islam R, and Eng WQ, and Ng A, and Dornan T
Debra Nestel,1 Katherine Gray,1 Margaret Simmons,1 Shane A Pritchard,1 Rumana Islam,1 Wan Q Eng,1 Adrian Ng,1 Tim Dornan2 1Gippsland Medical School/School of Rural Health, Monash University, Clayton, Australia; 2School of Health Professions Education, Maastricht University, Maastricht, the Netherlands Background: This paper explores local community perceptions of a relatively new rural medical school. For the purposes of this paper, community engagement is conceptualized as involvement in plan...
關鍵字: pilot
出版: Dove Medical Press
ISSN: 1179-7258
來源: DOAJ
System ID: 424451
203388
電子期刊
Iracema David Gomes, and Francisco Gerson Araújo, and Marcia Cristina Costa de Azevêdo, and André Luiz Machado Pessanha
<abstract language="eng">The reproductive cycle of the marine catfishes Genidens genidens Valenciennes, 1833 and Cathorops spixii Agassiz, 1839 in the Sepetiba Bay, was assessed by an annual period of sampling from October 1993 to September 1994. The fishes were caught by standardized otter trawl and environmental parameters of temperature, salinity and transparency of water were recorded at each sampling. Five gonadal phases were described, based in macroscopic observations. Changes in the gona...
關鍵字: marine
出版: Sociedade Brasileira de Zoologia
ISSN: 0101-8175
來源: DOAJ
System ID: 424450
203389
電子期刊
Karina Rodríguez-Sáenz, and José A. Vargas-Zamora, and Lourdes Segura-Puertas
Las hidromedusas tienen un papel importante en redes tróficas marinas debido a sus hábitos alimenticios depredadores. Este es el primer estudio de este grupo del zooplancton gelatinoso en un area de afloramiento costero en América Central. Durante seis meses de 1999, se estudió la abundancia de hidromedusas en cuatro estaciones en Bahía Culebra, Golfo de Papagayo, costa Pacífica de Costa Rica (10º 37&#8217;N-85º40&#8217;W). Se identificó un total de 53 especies de las que 26 son registros nuevos...
關鍵字: coastal
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 424449
203390
電子期刊
Ana Claudia Werner Pacheco, and Gianini Regina Luz, and Paulo Eduardo Polon, and Luiz Mário de Matos Jorge, and Paulo Roberto Paraíso
The aim of this work was to study the drying curves and equilibrium isotherms of extruded fish feed. The drying curves were determined at air temperatures of 50, 60, 70 and 80°C and airflow velocities of 1.5, 2.5 and 3.5 m/s). The equilibrium isotherms of relative humidity of air were obtained between 10 and 80% at 30, 40, 50, and 70°C. The experimental data were fitted for non-linear regression by using Statistica® to the models reported in the literature. The results showed that the drying cur...
關鍵字: fish
出版: Instituto de Tecnologia do Paraná (Tecpar)
ISSN: 1516-8913
來源: DOAJ
System ID: 424448
203391
電子期刊
K. Chen, and R. He
A regional-scale ocean model was used to hindcast the coastal circulation over the Middle Atlantic Bight (MAB) and Gulf of Maine (GOM) from 2004 to 2013. The model was nested inside a data assimilative global ocean model that provided initial and open boundary conditions. Realistic atmospheric forcing, tides and observed river runoff were also used to drive the model. Hindcast solutions were compared against observations, which included coastal sea levels, satellite altimetry sea surface height,...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1812-0784
來源: DOAJ
System ID: 424447
203392
電子期刊
Ed eHall, and Charles ePepe-Ranney
The influence of resource availability on planktonic and biofilm microbial community membership is poorly understood. Heterotrophic bacteria derive some to all of their organic carbon (C) from photoautotrophs while simultaneously competing with photoautotrophs for inorganic nutrients such as phosphorus (P) or nitrogen (N). Therefore, C inputs have the potential to shift the competitive balance of aquatic microbial communities by increasing the resource space available to heterotrophs (more C) wh...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 424446
203393
電子期刊
Le Thi Thanh Xuan, and Pham Van Hau, and Do Thi Thu, and Do Thi Thanh Toan
Background: Dengue fever (DF) is a vector-borne disease that is sensitive to weather and climate variability. To date, however, this relationship in coastal northern Vietnam has not been well documented. Objectives: This paper aims to examine the associations between meteorological variables and dengue incidence in Haiphong, Vietnam, over the period 2008–2012. Methods: Monthly data on dengue incidence from all commune health stations and hospitals of Haiphong (with a total population of ~1.8 mil...
關鍵字: coastal
出版: Taylor & Francis Group
ISSN: 1654-9880
來源: DOAJ
System ID: 424445
203394
電子期刊
Kristine N. White, and Taku Ohara, and Takuma Fujii, and Iori Kawamura, and Masaru Mizuyama, and Javier Montenegro, and Haruka Shikiba, and Tohru Naruse, and TY McClelland, and Vianney Denis, and James D. Reimer
Little is known about effects of large storm systems on mesophotic reefs. This study reports on how Typhoon 17 (Jelawat) affected Ryugu Reef on Okinawa-jima, Japan in September 2012. Benthic communities were surveyed before and after the typhoon using line intercept transect method. Comparison of the benthic assemblages showed highly significant differences in coral coverage at depths of 25–32 m before and after Typhoon 17. A large deep stand of Pachyseris foliosa was apparently less resistant t...
關鍵字: reef
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 424444
203395
電子期刊
C. Sanz-Lázaro, and T. Valdemarsen, and M. Holmer
Increasing ocean temperature due to climate change is an important anthropogenic driver of ecological change in coastal systems. In these systems sediments play a major role in nutrient cycling. Our ability to predict ecological consequences of climate change is enhanced by simulating real scenarios. Based on predicted climate change scenarios, we tested the effect of temperature and organic pollution on nutrient release from coastal sediments to the water column in a mesocosm experiment. PO<sub...
關鍵字: marine
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 424443
203396
電子期刊
Andrzej Batko
關鍵字: aquatic
出版: Polish Botanical Society
ISSN: 0001-625X
來源: DOAJ
System ID: 424442
203397
電子期刊
S. Muckenhuber, and S. Sandven
An open-source sea ice drift algorithm for Sentinel-1 SAR imagery is introduced based on the combination of feature tracking and pattern matching. Feature tracking produces an initial drift estimate and limits the search area for the consecutive pattern matching, which provides small- to medium-scale drift adjustments and normalised cross-correlation values. The algorithm is designed to combine the two approaches in order to benefit from the respective advantages. The considered feature-tra...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1994-0416
來源: DOAJ
System ID: 424441
203398
電子期刊
Berenice M. M. Fernandes, and Anderson D. N. Arci, and Simone C. Cohen
Fifty four specimens of marine fish belonging to seven species collected from the coast of the State of Rio de Janeiro, Brazil were examined for helminths, and results relating to Monogenea and Digenea are presented. The monogeneans Metamicrocotyla macracantha, Microcotyle pomatomi and Gotocotyla acanthura are reported in new hosts. The digeneans Parahemiurus merus, Lecithochirium microstomum, Gonocercella pacifica, Aponurus laguncula, Gonocerca trematomi and Lampritrema miescheri are reported i...
關鍵字: marine
出版: Colégio Brasileiro de Parasitologia Veterinaria
ISSN: 0103-846X
來源: DOAJ
System ID: 424440
203399
電子期刊
Judith C Lang, and Robert N Ginsburg
The Atlantic and Gulf Rapid Reef Assessment (AGRRA) Program, consisting of non-fixed, transect- based visual surveys, provides "snapshot" characterizations of a number of structurally or functionally important benthic and fish indicators on tropical northwestern Atlantic (TNWA) coral reefs and Brazil. To ameliorate the confounding factors inherent in multiyear temporal variation, a region-wide collaborative program for conducting rapid reef assessments at regular (five-year) intervals in sites t...
關鍵字: coral
出版: Vicerractoría Investigación
ISSN: 0034-7744
來源: DOAJ
System ID: 424439
203400
電子期刊
Marko D. Andrejić, and Vlada S. Sokolović, and Marjan A. Milenkov
Da bi logističke službe, kao deo sistema odbrane, bile efikasne i efektivne moraju biti kvalitetno organizaciono-tehnološki isprojektovane i kvalitetno vođene. Moraju da imaju dugoročni koncept razvoja sa ugrađenim organizacionim aspektom, jasno izražena težišta i prioritete u funkcionisanju, a takođe i kvalitetno definisane pokazatelje uspešnosti. Neophodno je da prate promene u bližem i daljem okruženju. Takođe, svaki proces koji je u nadležnosti logističkih službi mora biti dobro isprojektova...
關鍵字: logistic
出版: University of Defence in Belgrade
ISSN: 0042-8469
來源: DOAJ
System ID: 424438