過濾條件已變更

目前顯示的是舊的搜尋結果,重新按下搜尋按鈕以套用新的過濾條件

202951
電子期刊
Bruna Cavati, and Valéria de Oliveira Fernandes
A pesquisa objetivou avaliar a variação espacial e temporal da comunidade de algas perifíticas em dois ambientes do baixo rio Doce: lagoa Juparanã e rio Pequeno. Foram realizadas coletas trimestrais (agosto/04 a maio/05) em duas estações amostrais, uma na lagoa e outra no rio. Foram coletados pecíolos de <em>Eichhornia azurea</em> (Sw.) Kunth. Os atributos da comunidade analisados foram: riqueza de táxons, freqüência de ocorrência, densidade, abundância e dominância. Na lagoa Juparanã, foram reg...
關鍵字: algae
出版: Eduem - Editora da Universidade Estadual de Maringá
ISSN: 1679-9283
來源: DOAJ
System ID: 424087
202952
電子期刊
Silverman Henry J, and Khalil Susan S, and Wazaify Mayyada
<p>Abstract</p> <p>Background</p> <p>Studies have shown that research participants fail to appreciate the difference between research and medical care, labeling such phenomenon as a "therapeutic misconception" (TM). Since research activity involving human participants is increasing in the Middle East, qualitative research investigating aspects of TM is warranted. Our objective was to assess for the existence of therapeutic misconception amongst Egyptians.</p> <p>Methods</p> <p><it>Study Tool: </...
關鍵字: pilot
出版: BMC
ISSN: 1472-6939
來源: DOAJ
System ID: 424086
202953
電子期刊
Høyheim Bjørn, and Lunner Sigbjørn, and Andreassen Rune
<p>Abstract</p> <p>Background</p> <p>Single nucleotide polymorphisms (SNPs) represent the most widespread type of DNA variation in vertebrates and may be used as genetic markers for a range of applications. This has led to an increased interest in identification of SNP markers in non-model species and farmed animals. The <it>in silico </it>SNP mining method used for discovery of most known SNPs in Atlantic salmon (<it>Salmo salar</it>) has applied a global (genome-wide) approach. In this study w...
關鍵字: salmon
出版: BMC
ISSN: 1471-2164
來源: DOAJ
System ID: 424085
202954
電子期刊
Carrier Patrick, and Nguyen Mai, and Fessler Boris, and Cagnon Caroline, and Cuiné Stéphan, and Siaut Magali, and Beyly Audrey, and Beisson Fred, and Triantaphylidès Christian, and Li-Beisson Yonghua, and Peltier Gilles
<p>Abstract</p> <p>Background</p> <p>When cultivated under stress conditions, many microalgae species accumulate both starch and oil (triacylglycerols). The model green microalga <it>Chlamydomonas reinhardtii </it>has recently emerged as a model to test genetic engineering or cultivation strategies aiming at increasing lipid yields for biodiesel production. Blocking starch synthesis has been suggested as a way to boost oil accumulation. Here, we characterize the triacylglycerol (TAG) accumulatio...
關鍵字: alga
出版: BMC
ISSN: 1472-6750
來源: DOAJ
System ID: 424084
202955
電子期刊
Chen Ling-Yun, and Chen Jin-Ming, and Gituru Robert, and Wang Qing-Feng
<p>Abstract</p> <p>Background</p> <p>Hydrocharitaceae is a fully aquatic monocot family, consists of 18 genera with approximately 120 species. The family includes both fresh and marine aquatics and exhibits great diversity in form and habit including annual and perennial life histories; submersed, partially submersed and floating leaf habits and linear to orbicular leaf shapes. The family has a cosmopolitan distribution and is well represented in the Tertiary fossil record in Europe. At present,...
關鍵字: aquatic
出版: BMC
ISSN: 1471-2148
來源: DOAJ
System ID: 424083
202956
電子期刊
Eakin Elizabeth G, and Obermair Andreas, and Webb Penelope M, and Janda Monika, and Hayes Sandi C, and Newton Melissa J, and Wyld David, and Gordon Louisa G, and Beesley Vanessa L
<p>Abstract</p> <p>Background</p> <p>Exercise interventions during adjuvant cancer therapy have been shown to increase functional capacity, relieve fatigue and distress and may assist rates of chemotherapy completion. These studies have been limited to breast, gastric and mixed cancer groups and it is not yet known if a similar intervention is even feasible among women with ovarian cancer. We aimed to assess safety, feasibility and potential effect of a walking intervention in women undergoing c...
關鍵字: pilot
出版: BMC
ISSN: 1471-2407
來源: DOAJ
System ID: 424082
202957
電子期刊
Zhang Xiaowen, and Ye Naihao, and Liang Chengwei, and Mou Shanli, and Fan Xiao, and Xu Jianfang, and Xu Dong, and Zhuang Zhimeng
<p>Abstract</p> <p>Background</p> <p>The green algal genus Ulva Linnaeus (Ulvaceae, Ulvales, Chlorophyta) is well known for its wide distribution in marine, freshwater, and brackish environments throughout the world. The <it>Ulva</it> species are also highly tolerant of variations in salinity, temperature, and irradiance and are the main cause of green tides, which can have deleterious ecological effects. However, limited genomic information is currently available in this non-model and ecologica...
關鍵字: coastal
出版: BMC
ISSN: 1471-2164
來源: DOAJ
System ID: 424081
202958
電子期刊
Ottová Eva, and Jurajda Pavel, and Ondračková Markéta, and Lafond Thomas, and Šimková Andrea, and Morand Serge
<p>Abstract</p> <p>Background</p> <p>The main prediction of life-history theory is that optimal energy allocated among the traits is related to the growth, maintenance and survival. It is hypothesized that the optimal resource allocated to immune function, which generates resistance towards parasites and reduce the fitness losses caused by parasitism, is depending on other requirements for energetic resource and the benefits associated with them. The aims of this study are to investigate in a co...
關鍵字: fish
出版: BMC
ISSN: 1471-2148
來源: DOAJ
System ID: 424080
202959
電子期刊
Federico Suárez
El objeto de esta ponencia es analizar los aspectos socioeconómicos y jurídicos que sustentan la reforma de la Constitución por vía de referendo, que pretende prescribir el derecho fundamental al agua, e indicar que las disposiciones propuestas a la ciudadanía son acertadas para resolver sus necesidades más sentidas en esta materia. La tesis central del texto es que el orden constitucional colombiano requiere una reforma de esta naturaleza porque debe honrar los compromisos adquiridos internacio...
關鍵字: sea
出版: Universidad Externado de Colombia
ISSN: 0122-9893
來源: DOAJ
System ID: 424079
202960
電子期刊
G. Borghetti, and R.K. Yamazaki, and I. Coelho, and D.C.T. Pequito, and D.L. Schiessel, and M. Kryczyk, and R. Mamus, and K. Naliwaiko, and L.C. Fernandes
We investigated the effect of fish oil (FO) supplementation on tumor growth, cyclooxygenase 2 (COX-2), peroxisome proliferator-activated receptor gamma (PPARγ), and RelA gene and protein expression in Walker 256 tumor-bearing rats. Male Wistar rats (70 days old) were fed with regular chow (group W) or chow supplemented with 1 g/kg body weight FO daily (group WFO) until they reached 100 days of age. Both groups were then inoculated with a suspension of Walker 256 ascitic tumor cells (3×107 cells/...
關鍵字: fish
出版: Associação Brasileira de Divulgação Científica
ISSN: 0100-879X
來源: DOAJ
System ID: 424078
202961
電子期刊
IP Theocharis
IP TheocharisOphthalmology Department, Iaso General Hospital, Athens, GreecePurpose: To examine the correlation, if any, between fibrinogen plasma levels (FPL) and the clinical features of rhegmatogenous retinal detachment (RRD).Methods: FPL were measured preoperatively in 33 patients with primary RRD. Patient characteristics and detachment features such as the numbers of breaks and the extent of the detachment were recorded;Results: No statistically significant correlation was found between FPL...
關鍵字: pilot
出版: Dove Medical Press
ISSN: 1177-5467
來源: DOAJ
System ID: 424077
202962
電子期刊
Bright Jebaraj, and Rashmi Ramachandran, and Vimi Rewari, and Anjan Trikha, and Chandralekha, and Rajeev Kumar, and Prem Nath Dogra
Background and Aims: Opioid-free anesthesia decreases postoperative nausea and vomiting, emergence agitation, prolonged sedation, ileus, and urinary retention. The feasibility of the use of dexmedetomidine as sole analgesic agent has been shown in patients undergoing bariatric and gynecological laparoscopic surgery. We explored its use for robotic urological surgery. Material and Methods: Thirty patients were randomized to receive either dexmedetomidine (Group D) or fentanyl (Group F) along with...
關鍵字: pilot
出版: Wolters Kluwer Medknow Publications
ISSN: 0970-9185
來源: DOAJ
System ID: 424076
202963
電子期刊
M. A. Brunke, and S. P. de Szoeke, and P. Zuidema, and X. Zeng
Here, liquid water path (LWP), cloud fraction, cloud top height, and cloud base height retrieved by a suite of A-train satellite instruments (the CPR aboard CloudSat, CALIOP aboard CALIPSO, and MODIS aboard Aqua) are compared to ship observations from research cruises made in 2001 and 2003–2007 into the stratus/stratocumulus deck over the southeast Pacific Ocean. It is found that CloudSat radar-only LWP is generally too high over this region and the CloudSat/CALIPSO cloud bases are too low. This...
關鍵字: ship
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 424075
202964
電子期刊
Marion H. Stagars, and S. Emil Ruff, and Rudolf eAmann, and Katrin eKnittel
Alkanes comprise a substantial fraction of crude oil and are prevalent at marine seeps. These environments are typically anoxic and host diverse microbial communities that grow on alkanes. The most widely distributed mechanism of anaerobic alkane activation is the addition of alkanes to fumarate by (1-methylalkyl)succinate synthase (Mas). Here we studied the diversity of MasD, the catalytic subunit of the enzyme, in 12 marine sediments sampled at seven seeps. We aimed to identify cosmopolitan sp...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 424074
202965
電子期刊
Clisten Fátima Staffen, and Mari Dalva Staffen, and Mariana Londero Becker, and Sara Emelie Löfgren, and Yara Costa Netto Muniz, and Renato Hajenius Aché de Freitas, and Andrea Rita Marrero
The consumption of raw fish has increased considerably in the West, since it is said to be potentially healthier than processed fish (for containing omega 3 and 6, essential amino acids and vitamins). However this potential benefit, as well as the taste, value and even the risk of extinction are not the same for all species of fish, constituting grounds for fraud. Using the principles of the DNA barcode we revealed mislabelling of fish in Japanese restaurants and fishmarkets in Florianópolis, a ...
關鍵字: fish
出版: PeerJ Inc.
ISSN: 2167-8359
來源: DOAJ
System ID: 424073
202966
電子期刊
T. Tyrrell, and E. P. Achterberg
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 424072
202967
電子期刊
Cecilia eAlonso, and Claudia ePiccini, and Fernando eUnrein, and Florencia eBertoglio, and Daniel eConde, and Jakob ePernthaler
Laguna de Rocha belongs to a series of shallow coastal lagoons located along South America. It is periodically connected to the sea through a sand bar, exhibiting a hydrological cycle where physicochemical and biological gradients are rapidly established and destroyed. Its most frequent state is the separation of a Northern zone with low salinity, high turbidity and nutrient load, and extensive macrophyte growth, and a Southern zone with higher salinity and light penetration, and low nutrient co...
關鍵字: coastal
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 424071
202968
電子期刊
I. Kriest, and V. Sauerland, and S. Khatiwala, and A. Srivastav, and A. Oschlies
Global biogeochemical ocean models contain a variety of different biogeochemical components and often much simplified representations of complex dynamical interactions, which are described by many ( ≈ 10 to  ≈ 100) parameters. The values of many of these parameters are empirically difficult to constrain, due to the fact that in the models they represent processes for a range of different groups of organisms at the same time, while even for single species parameter values are often difficult to d...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1991-959X
來源: DOAJ
System ID: 424070
202969
電子期刊
T. Krumpen, and R. Gerdes, and C. Haas, and S. Hendricks, and A. Herber, and V. Selyuzhenok, and L. Smedsrud, and G. Spreen
Fram Strait is the main gateway for sea ice export out of the Arctic Ocean, and therefore observations there give insight into the composition and properties of Arctic sea ice in general and how it varies over time. A data set of ground-based and airborne electromagnetic ice thickness measurements collected during summer between 2001 and 2012 is presented here, including long transects well into the southern part of the Transpolar Drift obtained using fixed-wing aircrafts. The primary source of ...
關鍵字: sea
出版: Copernicus Publications
ISSN: 1994-0416
來源: DOAJ
System ID: 424069
202970
電子期刊
Maribeth S. Murray, and C. Peter McRoy, and Lawrence K Duffy, and Amy C. Hirons, and Jeanne M. Schaaf, and Robert P. Trocine, and John eTrefry
Deglaciation at the end of the Pleistocene initiated major changes in ocean circulation and distribution. Within a brief geological time, large areas of land were inundated by sea-level rise and today global sea level is 120 m above its minimum stand during the last glacial maximum. This was the era of modern sea shelf formation; climate change caused coastal plain flooding and created broad continental shelves with innumerable consequences to marine and terrestrial ecosystems and human populat...
關鍵字: sea
出版: Frontiers Media S.A.
ISSN: 2296-665X
來源: DOAJ
System ID: 424068
202971
電子期刊
A. M. Tarquis, and A. Platonov, and A. Matulka, and J. Grau, and E. Sekula, and M. Diez, and J. M. Redondo
The use of synthetic aperture radar (SAR) to investigate the ocean surface provides a wealth of useful information that is very seldom used to its full potential. Here we will discuss the application of multifractal techniques to detect oil spills and the dynamic state of the sea regarding turbulent diffusion. We present different techniques in order to relate the shape of the multifractal spectral functions and the maximum fractal dimension to the behaviour of the ocean surface. We compare eddy...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1023-5809
來源: DOAJ
System ID: 424067
202972
電子期刊
L. Courtney Smith
The California purple sea urchin, Strongylocentrotus purpuratus, is a long-lived echinoderm with a complex and sophisticated innate immune system. Several large gene families that function in immunity in this species includes the Sp185/333 gene family with ~50 (&#177;10) members. The family shows intriguing sequence diversity and encodes a broad array of diverse yet similar proteins. The genes have two exons of which the second encodes the mature protein and has repeats and blocks of sequence ca...
關鍵字: sea
出版: Frontiers Media S.A.
ISSN: 1664-3224
來源: DOAJ
System ID: 424066
202973
電子期刊
Catarina Guedes Costa, and Beatriz Prior Pinto Oliveira
Marine biodiversity represents an exceptional source of natural resources. Their use in a sustainable way may ensure alternative food sources for human consumption, which scarcity is anticipated. Macroalgae, also known as seaweed, are an outstanding example of this biodiversity and are considered an excellent source of a wide number of chemical compounds with beneficial health effects [1]. According to their pigmentation, they can be distinguished in green (Chlorophytaea), brown (Phaeophytaea) a...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 424065
202974
電子期刊
Sun-Wha Jung
OBJECTIVES Water-borne diseases caused by Vibrio parahemolyticus are often known to cause gastritis when raw or undercooked seafood is eaten. It is very rare that Vibrio gastritis caused by ingesting non-seafood products occurs on a large scale. On September 19, 2017, a large-scale Vibrio gastritis occurred after the city residents consumed food at a bazaar held in a welfare center in Jungnang-gu, Seoul. METHODS The total number of visitors was approximately 299, and 237 (79.3%) of them showed s...
關鍵字: squid
出版: Korean Society of Epidemiology
ISSN: 2092-7193
來源: DOAJ
System ID: 424064
202975
電子期刊
P V Divya, and C S Kaliprasad, and V Prakash
Southern coastal parts of Kerala are well-reported high background radiation areas. Hence, the radiological protection of the population in this region may have some concern. In the present work, samples were collected during three different seasons, namely premonsoon, monsoon, and postmonsoon. The radionuclide activities obtained for various seasons have been compared in order to understand the enrichment of radionuclides during various seasons. The activities of natural radionuclides, namely 4...
關鍵字: coastal
出版: Wolters Kluwer Medknow Publications
ISSN: 0972-0464
來源: DOAJ
System ID: 424063
202976
電子期刊
Matheus Hernandes LEIRA, and Ariane Flávia do NASCIMENTO, and Felipe Ribeiro ALVES, and Laura ORFAO, and Yasmim Gonçalves LACERDA, and Hortência Aparecida BOTELHO, and Lucas REGHIM, and Aline de Assis LAGO
Abstract The majority of tilapia farming is used for the production of fillets, resulting in the generation of waste that can be used to increase food stocks by producing minced fish. The aim of this study was to characterize and evaluate the viability of boiling and mechanical techniques for obtaining minced fish in relation to performance, physical-chemical and microbiological parameters and to reduce the waste generated in the process of filleting Nile tilapia. Based on performance outcomes,...
關鍵字: fish
出版: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
ISSN: 0101-2061
來源: DOAJ
System ID: 424062
202977
電子期刊
Pere Abelló, and José Manuel Arcos, and Luis Gil Sola
The attendance of seabirds to a research trawler along the Mediterranean coast of the Iberian Peninsula was monitored during six demersal surveys (MEDITS project). Cruises were performed in late spring during the period 1994-1999. Twenty seabird species were recorded, including both breeders and migrants. The four most common species behind the boat were local breeders, namely the Balearic shearwater Puffinus mauretanicus, Cory´s shearwater Calonectris diomedea, Audouin´s gull Larus audouinii an...
關鍵字: trawler
出版: Consejo Superior de Investigaciones Científicas
ISSN: 0214-8358
來源: DOAJ
System ID: 424061
202978
電子期刊
C.G. Carter, and R.C. Hauler, and L.R. Adams
關鍵字: aquaculture
出版: Elsevier
ISSN: 2352-3859
來源: DOAJ
System ID: 424060
202979
電子期刊
Kim Marie Handley, and Kim Marie Handley, and Jonathan R Lloyd
The Marinobacter genus comprises widespread marine bacteria, found in localities as diverse as the deep ocean, coastal seawater and sediment, hydrothermal settings, oceanic basalt, sea-ice, sand, solar salterns, and oil fields. Terrestrial sources include saline soil and wine-barrel-decalcification wastewater. The genus was designated in 1992 for the Gram-negative, hydrocarbon-degrading bacterium Marinobacter hydrocarbonoclasticus. Since then, a further 31 type strains have been designated. None...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 1664-302X
來源: DOAJ
System ID: 424059
202980
電子期刊
Dauro Douglas Oliveira, and Antônio Carlos de Oliveira Ruellas, and Maria Eugênia de Lima Drummond, and Mariele Cristina Garcia Pantuzo, and Ângela Maria Quintão Lanna
OBJETIVO: os rápidos e contínuos avanços nas Ciências da Computação resultaram no aumento significativo do emprego de novas tecnologias em todos os níveis da sociedade. Na Ortodontia, radiografias e fotografias digitais já são usadas de forma rotineira. A utilização de modelos de estudo digitais vem sendo anunciada como o novo componente da documentação ortodôntica computadorizada. Como acontece quando uma nova tecnologia se torna disponível, o uso de modelos ortodônticos digitais tem gerado con...
關鍵字: pilot
出版: Dental Press Editora
ISSN: 1415-5419
來源: DOAJ
System ID: 424058
202981
電子期刊
Fabio Cop Ferreira, and Ursulla Pereira Souza, and Miguel Petrere Junior2
Abstract The riparian vegetation in lakes and reservoirs is source of course wood structures such as trunks and branches and is used as sheltering, spawning and foraging habitats for fishes. The reduction of these submerged structures can thus, affect the composition and structure of fish assemblages in reservoirs. Aim To evaluate the influence of riparian vegetation on the biotic condition of fish assemblage by adapting the Reservoir Fish Assemblage Index (RFAI) to two reservoirs in the Upper ...
關鍵字: fish
出版: Associação Brasileira de Limnologia
ISSN: 2179-975X
來源: DOAJ
System ID: 424057
202982
電子期刊
Т. Н. Митусова, and Н. К. Кондрашева, and М. М. Лобашова, and М. А. Ершов, and В. А. Рудко
The article offers a definition of the stability of marine high-viscosity fuel from the point of view of the colloid-chemical concept of oil dispersed systems. The necessity and importance of the inclusion in the current regulatory requirements of this quality parameter of high-viscosity marine fuel is indicated. The objects of the research are high-viscosity marine fuels, the basic components of which are heavy oil residues: fuel oil that is the atmospheric residue of oil refining and viscosity...
關鍵字: marine
出版: Saint-Petersburg Mining University
ISSN: 2411-3336
來源: DOAJ
System ID: 424056
202983
電子期刊
Eduardo Tusa, and Alan Reynolds, and Neil Robertson, and David Lane, and Hyxia Villegas, and Antonio Bosnjak
<p><span>(Received: 2014/07/31 - Accepted: 2014/09/23)</span></p><p>This work focuses on developing a fast coral reef detector, which is used for an autonomous underwater vehicle, AUV. A fast detection secures the AUV stabilization respect to an area of reef as fast as possible, and prevents devastating collisions. We use the algorithm of Purser et al. (2009) because of its precision. This detector has two parts: feature extraction that uses Gabor Wavelet filters, and feature classification that...
關鍵字: coral
出版: Universidad Tecnológica Equinoccial
ISSN: 1390-6542
來源: DOAJ
System ID: 424055
202984
電子期刊
G. E. Hofmann, and T. G. Evans, and M. W. Kelly, and J. L. Padilla-Gamiño, and C. A. Blanchette, and L. Washburn, and F. Chan, and M. A. McManus, and B. A. Menge, and B. Gaylord, and T. M. Hill, and E. Sanford, and M. LaVigne, and J. M. Rose, and L. Kapsenberg, and J. M. Dutton
The California Current Large Marine Ecosystem (CCLME), a temperate marine region dominated by episodic upwelling, is predicted to experience rapid environmental change in the future due to ocean acidification. The aragonite saturation state within the California Current System is predicted to decrease in the future with near-permanent undersaturation conditions expected by the year 2050. Thus, the CCLME is a critical region to study due to the rapid rate of environmental change that resident org...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 424054
202985
電子期刊
Maria João Lança, and Maria Machado, and Rui Manuel Alves Ferreira, and Ana Filipa Ferreira, and Bernardo Quintella, and Pedro R. Almeida
In the last decades, several authors have pointed out a reduction in the sea lamprey population abundance in Portuguese rivers. In spite of this, studies concerning downstream migration and the conditions experienced by sea lamprey juveniles during this process are yet to be understood. Considering that changes in lipid composition of the gill cells´ basolateral membrane (BLM) may disrupt the major transporter Na+K+-ATPase (NKA), this study goals were to detect changes at this level either durin...
關鍵字: sea
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 424053
202986
電子期刊
M.A. Silvers, and J. Savva, and C. Huggins, and A. Kwok, and T. Haines, and H. Truby
關鍵字: pilot
出版: Elsevier
ISSN: 2352-3859
來源: DOAJ
System ID: 424052
202987
電子期刊
Sara M Maxwell, and Melinda Grace Conners, and Nicholas Sisson, and Tiffany M Dawson
Marine protected areas are considered important tools for protecting marine biodiversity, and animal tracking is a key way to determine if boundaries are effectively placed for protection of key marine species, including seabirds. We tracked chick-rearing brown noddies (Anous stolidus) from the Dry Tortugas National Park in Florida USA in 2016 using 1.8 g Nanofix GPS tags (n = 10), making this the first time this species has ever been tracked. We determined movement parameters, such as flight s...
關鍵字: marine
出版: Frontiers Media S.A.
ISSN: 2296-7745
來源: DOAJ
System ID: 424051
202988
電子期刊
M. A. Geller, and V. A. Yudin, and B. V. Khattatov, and M. E. Hagan
This paper uses dissipation values derived from UARS/HRDI observations in a recently published diurnal-tide model. These model structures compare quite well with the UARS/HRDI observations with respect to the annual variation of the diurnal tidal amplitudes and the size of the amplitudes themselves. It is suggested that the annual variation of atmospheric dissipation in the mesosphere-lower thermosphere is a major controlling factor in determining the annual variation of the diurnal tide.
關鍵字: tide
出版: Copernicus Publications
ISSN: 0992-7689
來源: DOAJ
System ID: 424050
202989
電子期刊
A. SANTELLI, and E. PUNZO, and G. SCARCELLA, and P. STRAFELLA, and A. SPAGNOLO, and G. FABI
The aim of this study is to increase the knowledge on the distribution of decapod crustaceans associated with an artificial reef positioned on sandy-mud bottoms in the central Adriatic Sea. The reef is constituted of concrete modules assembled in pyramids and concrete poles. Hard and soft bottom samples were collected from 2001, just after reef construction, to 2005 (4 surveys per year). Regarding the soft seabed, three sites close to a pyramid, three inside the reef area at a distance of 10-15 ...
關鍵字: reef
出版: Hellenic Centre for Marine Research
ISSN: 1108-393X
來源: DOAJ
System ID: 424049
202990
電子期刊
X. Lin, and X. Lin, and R. Huang, and R. Huang, and Y. Li, and F. Li, and Y. Wu, and Y. Wu, and D. A. Hutchins, and M. Dai, and K. Gao
There is increasing concern about the effects of ocean acidification on marine biogeochemical and ecological processes and the organisms that drive them, including marine bacteria. Here, we examine the effects of elevated CO<sub>2</sub> on the bacterioplankton community during a mesocosm experiment using an artificial phytoplankton community in subtropical, eutrophic coastal waters of Xiamen, southern China. Through sequencing the bacterial 16S rRNA gene V3-V4 region, we found that the bac...
關鍵字: coastal
出版: Copernicus Publications
ISSN: 1726-4170
來源: DOAJ
System ID: 424048
202991
電子期刊
Hua SONG, and Meiling WANG, and Jing YANG, and Dantong SUN, and Longtao KONG, and Chunling WEI
The navigation problem of the lifting reentry vehicles has attracted much research interest in the past decade. This paper researches the navigation in the blackout zone during the reentry phase of the aircraft, when the communication signals are attenuated and even interrupted by the blackout zone. However, when calculating altitude, a pure classic inertial navigation algorithm appears imprecise and divergent. In order to obtain a more precise aircraft altitude, this paper applies an integrated...
關鍵字: navigation
出版: Elsevier
ISSN: 1000-9361
來源: DOAJ
System ID: 424047
202992
電子期刊
Zhenfang Zhou, and Xin Wang, and Hui Zhang, and Jingya Sun, and Linghui Zheng, and Hongchun Liu, and Jidong Wang, and Aijun Shen, and Meiyu Geng, and Yuewei Guo
A bicyclic depsipeptide, chromopeptide A (1), was isolated from a deep-sea-derived bacterium Chromobacterium sp. HS-13-94. Its structure was determined by extensive spectroscopic analysis and by comparison with a related known compound. The absolute configuration of chromopeptide A was established by X-ray diffraction analysis employing graphite monochromated Mo Kα radiation (λ=0.71073 Å) with small Flack parameter 0.03. Chromopeptide A suppressed the proliferation of HL-60, K-562, and Ramos cel...
關鍵字: marine
出版: Elsevier
ISSN: 2211-3835
來源: DOAJ
System ID: 424046
202993
電子期刊
J. F. Conte, and J. L. Chau, and F. I. Laskar, and G. Stober, and H. Schmidt, and P. Brown
<p>We present a study of the semidiurnal solar tide (S2) during the fall and spring transition times in the Northern Hemisphere. The tides have been obtained from wind measurements provided by three meteor radars located at Andenes (69°&thinsp;N, 16°&thinsp;E), Juliusruh (54°&thinsp;N, 13°&thinsp;E) and Tavistock (42°&thinsp;N, 81°&thinsp;W). During the fall, S2 is characterized by a sudden and pronounced decrease occurring every year and at all height levels. The spring transition also sh...
關鍵字: tide
出版: Copernicus Publications
ISSN: 0992-7689
來源: DOAJ
System ID: 424045
202994
電子期刊
A. S. Mahajan, and J. C. Gómez Martín, and T. D. Hay, and S.-J. Royer, and S. Yvon-Lewis, and Y. Liu, and L. Hu, and C. Prados-Roman, and C. Ordóñez, and J. M. C. Plane, and A. Saiz-Lopez
Ship-based Multi-Axis Differential Optical Absorption Spectroscopy measurements of iodine monoxide (IO) and atmospheric and seawater Gas Chromatography-Mass Spectrometer observations of methyl iodide (CH<sub>3</sub>I) were made in the Eastern Pacific marine boundary layer during April 2010 as a part of the HaloCarbon Air Sea Transect-Pacific (HaloCAST-P) scientific cruise. The presence of IO in the open ocean environment was confirmed, with a maximum differential slant column density of 5 × 10<s...
關鍵字: ocean
出版: Copernicus Publications
ISSN: 1680-7316
來源: DOAJ
System ID: 424044
202995
電子期刊
Vicente Francisco Coelho, and Joaquim Olinto Branco, and Marco Antonio Harms Dias
This study used environmental accounting tools to collect and organize information related to the market and work organization of the artisan fishing community of Penha, SC. This research was based on two sources of data and references to standardize information. We calculated productivity indicators and evaluated the possibility of using them for environmental management of this resource. We calculated the consumed inputs, costs, produced and marketed quantities, destinations and sales values, ...
關鍵字: shrimp
出版: Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)
ISSN: 1980-993X
來源: DOAJ
System ID: 424043
202996
電子期刊
Daniel Eugenio Valdivia, and Jaime Pizarro-Araya, and Raúl Briones, and Andrés A. Ojanguren-Affilastro, and Jorge Cepeda-Pizarro
Using pitfall traps, the species composition and abundance of solpugids were studied in several ecotopes of Chile's transitional coastal desert. The study was conducted in the area around Punta de Choros (29°15'S, 71°26'W) and in Los Choros Archipelago (29°32'S, 67°61'W), in 2005 and 2006. Five species were recorded: Procleobis sp.; Sedna pirata Muma, 1971 (Ammotrechidae); Mummucia sp.; Mummucia variegata (Gervais, 1849) (Mummuciidae); and Ammotrechelis goetschi Roewer, 1934 (Daesiidae). Solpugi...
關鍵字: coastal
出版: Universidad Nacional Autónoma de México
ISSN: 1870-3453
來源: DOAJ
System ID: 424042
202997
電子期刊
Ricardo de Figueiredo Guilherme, and José Marcelino Oliveira Cavalheiro, and Petrônio Augusto Simão de Souza
O desenvolvimento crescente da Piscicultura vem necessitando estudos sobre a melhor forma de utilização das rações, visto que estas podem elevar o custo de produção de 50 a 80%. Devido à escassez e o elevado preço de tais fontes protéicas (farinhas de osso e carne com a farinha de peixe) e visando a farinha de silagem de cabeça de camarão como uma alternativa em potencial, com esta pesquisa objetivou-se estudar elaboração, caracterização química e o perfil dos aminoácidos da farinha de silagem d...
關鍵字: shrimp
出版: Universidade Federal de Lavras
ISSN: 1413-7054
來源: DOAJ
System ID: 424041
202998
電子期刊
AGUNG BUDIHARJO, and NOOR SOESANTI HANDAJANI, and INTAN ESTETIKA ALAMANDA
This research aims to find out the health condition of catfish (Clarias gariepinus) based on hematology and to find out the blood endoparasite type of catfish (Clarias gariepinus) bred in Mangkubumen Boyolali. The sample collection of catfish in this research was conducted in Mangkubumen, Boyolali. The catfish becoming the sample had following criteria: 3 month old, 100-150 gr weight, and 20-25 cm long. The sample of catfish was taked from 5 pools, it was taken 10 fishes from each pool. The hem...
關鍵字: fishery
出版: MBI & UNS Solo
ISSN: 1412-033X
來源: DOAJ
System ID: 424040
202999
電子期刊
A.J. Lopes, and W. Costa, and T. Thomaz Mafort, and A. de Sá Ferreira, and S.L. Silveira de Menezes, and F. Silva Guimarães
Objectives: To compare imaging findings, lung function variables and cardiopulmonary exercise testing (CPET) results between Brazilian sandblasters of shipyard and stone carvers with silicosis. Methods: Of the 41 patients, 25 subjects were sandblasters and 16 were stone carvers, with median ages of 52 and 46.4 years, respectively. All of the patients underwent pulmonary function tests (PFTs) and CPET. Chest radiographs were classified according to the International Labour Organization recommenda...
關鍵字: shipyard
出版: Elsevier
ISSN: 2173-5115
來源: DOAJ
System ID: 424039
203000
電子期刊
Eriko Hoshino, and Ingrid van Putten, and Wardis Girsang, and Budy P. Resosudarmo, and Satoshi Yamazaki
Understanding the specific relationships between ecological and socioeconomic conditions and marine tenure is likely to contribute to successful functioning of self-governance institutions for common-pool resources. Complex interrelationships of factors influencing fishing activities of coastal communities and implementation of customary marine tenure over their waters can be represented in a Bayesian belief network model. We developed a Bayesian belief network model that includes the links betw...
關鍵字: coastal
出版: Resilience Alliance
ISSN: 1708-3087
來源: DOAJ
System ID: 424038