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| Registros recuperados: 52 | |
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| Noone, K.J.; Öström, E.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Johnson, D.W.; Taylor, J.P.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; O'Dowd, C.D.; Smith, M.H.; Durkee, P.A.; Nielsen, K.; Hudson, J.G.; Pockalny, R.A.; De Bock, L.; Van Grieken, R.E.; Gasparovic, R.F.; Brooks, I.. |
| The effects of anthropogenic particulate emissions from ships on the radiative, microphysical, and chemical properties of m(oderately polluted marine stratiform clouds are examined. A case study of two ships in the same air mass is presented where one of the vessels caused a discernible ship track while the other did not. <i>In situ</i> measurements of cloud droplet size distributions, liquid water content, and cloud radiative properties, as well as aerosol size distributions (outside cloud, interstitial, and cloud droplet residual particles) and aerosol chemistry, are presented. These are related to measurements of cloud radiative properties. The differences between the aerosol in the two ship plumes are discussed; these indicate that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerosols; Air pollution; Albedo; Anthropogenic factors; Atmospheric boundary layer; Atmospheric particulates; Chemical plumes; Cloud physics; Clouds; Droplets; Fuels; Ocean-atmosphere system; Pollution effects; Radiative transfer; Ships; Size distribution. |
| Ano: 2000 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8840 |
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| Rangaraju, Visvanathan. |
| The size distribution of cocoa pods was measured and the average length and breadth were 147.5 and 74.2 mm, respectively. Based on length, the pods were categorized as less than 120 mm, 120 to 140 mm and above 140 mm, which were 28, 37 and 35% of the whole lot. The breadth varied from 60 mm to 110 mm and the major contribution was 18, 28, 36, 12, 4 and 2% for the ranges, below 70 mm, 70-80 mm, 80-85 mm, 85-90 mm, 90-100 mm and 100-110 mm, respectively. A direct proportion between the length and breadth was noted. The sphericity and aspect ratio ranged 0.54 to 0.68 and 0.4 to 0.57. The coefficient of static friction increased in the range 0.503 to 0.738 with moisture content range of 50.3 to 76.4% (d.b.) against various surfaces, also the rolling angle... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cocoa pods; Size distribution; Divergent type grader; Capacity; Effectiveness.. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7049 |
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| Carozza, C.R.; Cotrina, C.P.. |
| The study aims to discriminate juvenile and adult concentration areas of white croacker Micropogonias furnieri and striped weakfish Cynoscion striatus in two different areas: Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina). The length structure and the relative abundance of these two species were analyzed with data from a research cruise carried out by R/V Dr.E.L.Holmberg during November 1994. Data of relative abundance in t/nm2 were considered to define distribution and concentration areas. 49 samples of white croaker and 41 striped weakfish from AUCFZ a, inside the area of Río de la Plata and in front of Montevideo coast, at depths lesser than 8 meters, while the adults were located in the northern coast of... |
| Tipo: Journal Contribution |
Palavras-chave: Abundance; Fishery surveys; Size distribution; Coastal fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_1696. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2472 |
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| Flament, P; Lepretre, A; Noel, S; Auger, Y. |
| Dix-huit prélèvements d'aérosols ont été effectués en Manche Nord, soit en bordure de mer, soit à quelques milles au large, à l'aide d'un impacteur à cascade (5 étages). L'ensemble des données (concentrations de 8 éléments répartis en 6 classes granulométriques successives) est exploité par analyse factorielle des correspondances. Celle-ci permet de mettre en évidence de larges déformations dans les spectres granulométriques pour les éléments traceurs marin et terrestre (Na et Al). En opposition, les métaux résultant d'activité anthropique (Fe, Pb, Zn, Mn), ont des comportements beaucoup plus typés. Parmi ceux-ci, la présence du manganèse sur le site paraît être indépendante de celle des autres métaux et imputable à une seule source. Pb, Fe, Zn et cuivre... |
| Tipo: Text |
Palavras-chave: Aérosols; Éléments-traces; Analyse par correspondance; Distribution granulométrique; Littoral; Aerosols; Trace elements; Correspondence analysis; Size distribution; Coastal. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00110/22082/19723.pdf |
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| The principal biometric relations of juvenile Trachypenaeus similis similis and T. constrictus in Guadeloupe were calculated from 1976 to 1978. The examination of these relations yields few differences between the two species. A growth curve was established according to the sequences of modal values; these were determined according to weekly size frequency distributions over three different periods of time. In the zone studied, the growth of young Trachypenaeus is more rapid than that of the young Penaeus. |
| Tipo: Text |
Palavras-chave: Trachypenaeus; Juveniles; Size distribution; Growth curves; Biometrics. |
| Ano: 1980 |
URL: http://archimer.ifremer.fr/doc/1980/publication-1932.pdf |
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| Le Guen, J.c; Morizur, Yvon. |
| Length measurements on Pseudotolithus elongatus ' samples from the Congo were recorded in the 60s. Subsamples were collected in order to be "aged" by otoliths' reading. The size frequency distributions were splitted into successive unimodal distributions by different methods. Their results were compared. The results obtained from the "successive maximums' method" were similar to those from the "otoliths' reading." The programs NORMSEP and MIX gave results far more difficult to interpret biologically speaking in spite of their mathematical quality. Because many length frequency distributions of a cohort are symmetrical in nature, we suggest applying the "successive maximums' method"if there is no evidence of normality |
| Tipo: Text |
Palavras-chave: Frequency analysis; Size distribution; Pseudotolithus elongatus; Sciaenidae; Pisces. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/1989/rapport-2336.pdf |
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| Hansen, J.E.; Garciarena, A.D.. |
| As part of the research programs performed yearly at the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP, Mar del Plata, Argentina) some important basic data about the commercial fisheries usually included in internal reports are registered. This formal paper is a review and summary of size and age composition estimates of commercial catches (discards included) of Northern Argentine anchovy (34ºS-41ºS) obtained between 1990-2011. The basic data resulting from the examination of 521 samples from fishing vessels included 62,466 fish length measurements and 26,667 valid age readings from which the corresponding 22 annual age-length keys were built. The annual estimates of the individual total length-total weight relation parameters and of... |
| Tipo: Journal Contribution |
Palavras-chave: Pelagic fisheries; Stock assessment; Commercial fishing; Catch composition; Age composition; Size distribution; Clupeoid fisheries. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5502 |
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| Quiroz, J.C.; Montenegro, C.; Báez, P.; Espíndola, F.. |
| Se reportan las actividades y resultados del proyecto FIP 2005-41 “Dinámica y estructura poblacional del langostino colorado III y IV Regiones”. Para abordar el estudio de la dinámica y estructura poblacional de P. monodon, se plantearon dos hipótesis. Una postula que la especie posee una estructura poblacional a lo largo de la plataforma continental, en un gradiente latitudinal, en tanto que la otra plantea que la especie tiene una estructura poblacional a través de la plataforma continental, en un gradiente longitudinal. Para someter a pruebas estas hipótesis se realizaron varios análisis estadísticos de variables fundamentales del stock, como la densidad, los tamaños corporales, las edades y componentes del stock en función de su madurez. Los... |
| Tipo: Report |
Palavras-chave: Population dynamics; Population structure; Size distribution; Spawning populations; Statistical models; Marine crustaceans; Population structure; Population dynamics; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6111. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1505 |
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| De la Garza González, J.L.; Ravalli, C.; López Greco, L.. |
| The objective of this work is to increase knowledge on the distribution and punctual density of both morphotypes of Munida gregaria in the San Jorge Gulf, Argentina. The data derived from the research cruise carried out on board of the FV Álvarez Entrena I in February 2011. Specimens of gregaria and subrugosa were caught in 37 and 73 of the 91 trawls performed, respectively. Out of the total of positive trawls, 17 were performed at depths lower than 55 m and the remaining 60 at deeper waters. The relative average abundance of both morphotypes increased significantly with regard to the two previous years (2009, 2010). M. gregaria subrugosa represented 66.4% and gregaria the remaining percentage. In the south sector of the gulf, where the highest punctual... |
| Tipo: Journal Contribution |
Palavras-chave: Biogeography; Abundance; Size distribution; Fishery surveys. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5487 |
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| Villarino, M.F.. |
| The main purpose of this paper is to describe the seasonal distribution and length structure of the Pink cuskeel Genypterus blacodes. Data from surveys carried out between 1973-1989 were used. Basic data included Pink cuskeel densities per haul, catch length structure, depth and haul position. Pink cuskeel distribution was obtained by using the same density ranges for all seasons. A cluster analysis was applied to group the individual length structure of each survey catch. All year long the principal concentrations were within 40° and 48°S. Throughout the year the adults and juveniles were present in San Jorge Gulf, Patagonia, Argentina, so bimodal distribution were obtained. In winter juveniles were located within the sector 37° and 41°S. During autumn,... |
| Tipo: Journal Contribution |
Palavras-chave: Size distribution; Geographical distribution; Fishery surveys. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/5787 |
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| Registros recuperados: 52 | |
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