نتایج جستجو برای: sagitta

تعداد نتایج: 177  

2011
Mark D. Ohman Greg H. Rau Pincelli M. Hull

We analyzed variations in naturally occurring N in four species of zooplankton as an index of climate influences on pelagic food web structure in a major eastern boundary current ecosystem. Our analyses focused on two species of particle-grazing copepods (Calanus pacificus and Eucalanus californicus) and two species of carnivorous chaetognaths (Sagitta bierii and S. euneritica), drawing on the ...

Journal: :Optometry and vision science : official publication of the American Academy of Optometry 2014
Miguel Faria-Ribeiro Norberto López-Gil Rafael Navarro Daniela Lopes-Ferreira Jorge Jorge Jose Manuel González-Méijome

PURPOSE To describe a new methodology that derives horizontal posterior retinal contours from partial coherence interferometry (PCI) and ray tracing using the corneal topography. METHODS Corneal topography and PCI for seven horizontal visual field eccentricities correspondent to the central 60 degrees of the posterior pole were obtained in 55 myopic eyes. A semicustomized eye model based on t...

E. Kamaly, J. Seifabadi, M. Afshari, T. Valinassab,

Age determination and feeding habits of the Japanese threadfin bream, Nemipterus japonicus, was carried out in the northern Oman Sea (Chabahar area), based on 212 specimens collected between September 2009 and May 2010. The minimum and maximum fork length and body weight were measured as 145, 258 mm and 55.31, 288.12 g. The relationship between Body Weight (BW) and Fork Length (FL) for all indi...

F. Parafkandeh Haghighi , M. Aliasghari,

The aim of the present study was to investigate the reproduction of three species of kilka, including common, anchovy and bigeye kilka in the southeastern waters of Caspian Sea. This study was conducted during 2010 and 6476 specimens were fortnightly collected from fishing landing site. Body weight and fork length were measured. The samples were dissected and female gonads were weighed. Sexual ...

The Caspian kutum, Rutilus kutum Kamenskii, 1901 from Cyprinidae family is native in the Caspian Sea, with the highest distribution in the southern part and rarely seen in the northern and is an economically important species along the Caspian Sea. Despite this, knowledge about stock structure is scarce and there is no formal management strategy to ensure the long-term sustainability of this va...

Journal: :شیلات 0
مهرداد علی¬اصغری 1 دانشگاه آزاد اسلامی، واحد قائمشهر، باشگاه پژوهشگران جوان، عبدالصمد کرامت گروه شیلات، دانشگاه علوم کشاورزی و منابع طبیعی ساری، فرخ پرافکنده حقیقی موسسه تحقیقات شیلات ایران،

the present research aimed to study the growth and reproductive parameters of common kilka clupeonella caspia in southern caspian sea in 2010. after measuring the length and weight of 3774 samples, they were dissected, sex determined and female gonads were weighed. sexual maturity classification was carried out based on six stages. age was determined using sagitta otoliths. length-weight relati...

2000
M. Syphers L. Michelotti

An alternative being considered for the Next Linear Col-lider (NLC) is not to tunnel in a straight line but to bend the Main Linac into an arc so as to follow an equipotential. We begin here an examination of the effects that this would have on vertical dispersion, with its attendant consequences on synchrotron radiation and emittance growth by looking at two scenarios: a gentle continuous bend...

The study was performed on the shape and morphology of otolith Grammoplites suppositus (Troschel, 1840) in Bushehr and Hormozgan waters of the Persian Gulf. 157 specimens (86 from Hormozgan and 72 from Bushehr) were collected as trawl bycatch. All the specimens are killed and fixed in 70% alcohol. After obtaining otolith, its shape indices include: form factor, roundness, circularity, rectangul...

2000
M. Syphers

An alternative being considered for the Next Linear Collider (NLC) is not to tunnel in a straight line but to bend the Main Linac into an arc so as to follow an equipotential. We begin here an examination of the effects that this would have on vertical dispersion, with its attendant consequences on synchrotron radiation and emittance growth by looking at two scenarios: a gentle continuous bendi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید