نتایج جستجو برای: dragonfly

تعداد نتایج: 933  

Journal: :Freshwater Science 2021

Connectivity and patch size are important landscape characteristics that drive patterns of abundance diversity across scales. However, responses to connectivity dependent on species traits. Riverine landscapes highly dynamic both spatially temporally, with hydrologic being a major driver diversity. Here we modeled the densities 2 taxa differ in life history dispersal ability, Virginia River Sna...

Journal: :Journal of General Physiology 1965

Journal: :Computer Languages, Systems & Structures 2018

Prediction of heart disease is very important because it is one of the causes of death around the world. Moreover, heart disease prediction in the early stage plays a main role in the treatment and recovery disease and reduces costs of diagnosis disease and side effects it. Machine learning algorithms are able to identify an effective pattern for diagnosis and treatment of the disease and ident...

1999
SCOTT D. PEACOR EARL E. WERNER

This investigation examines the role of trait-mediated indirect interactions in a simple aquatic food web. We conducted the experiments in cattle watering tanks in order to establish whether competitive and predator–prey interactions between two species are affected by other species in the system; i.e., are pairwise interaction strengths affected by the background species assemblage? We examine...

Journal: :Far Eastern entomologist 2021

Dragonfly Anax nigrofasciatus Oguma, 1915 (Odonata: Aeshnidae) was collected on a small pond in the vicinity of Vityaz settelment, Gamov Peninsula, Primorsky Krai 2021. It is first record this East Asian species from Russia. A. clearly differs parthenope julius Brauer, 1865, more common south Russian Far East, by body coloration and details morphology.

2003
PHILIP RUCK

The ERG of the dragonfly ocellus has been analyzed into four components, two of which originate in the photoreceptor cells, two in the ocellar nerve fibers (Ruck, 1961 a). Component 1 is a sensory generator potential, component 2 a response of the receptor axons. Component 3 is an inhibitory postsynaptic potential, component 4, a discharge of afferent nerve impulses in ocellar nerve fibers. Res...

2009
Joshua P. Van Kleef Gert Stange Michael R. Ibbotson

28 29 Motion processing in visual neurons is often understood in terms of how they integrate light stimuli 30 in space and time. These integrative properties, known as the spatiotemporal receptive fields 31 (STRFs), are sometimes obtained using white noise techniques where a continuous random contrast 32 sequence is delivered to each spatial location within the cell’s field of view. In contrast...

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