نتایج جستجو برای: clumped

تعداد نتایج: 1053  

Journal: :Geological Society of America Bulletin 2021

Abstract Carbonate clumped isotope thermometry has been applied to fossil mollusk shells from Tibet reconstruct the paleoclimate and paleoelevation of region. However, inferred climatic conditions this proxy are inconsistent with paleontological evidence. Here, we report new data both modern (5–4 Ma) freshwater results X-ray diffraction (XRD) analyses Himalayan-Tibetan Plateau. Although all ana...

Journal: :Journal of tropical biodiversity and biotechnology 2022

The red list of the International Union for Conservation Nature and Natural Resources (IUCN) reported Castanopsis argentea as an endangered species. Studies about autecology on its natural habitat become important to perform species conservation. This study aimed analyze population structure, distribution pattern, environmental factors that influence presence C. in Telaga Warna Reserve. Data wa...

Journal: :Ecosphere 2022

Turtles are killed on roads, yet there is little evidence of negative road effects their abundances. We hypothesized that this could be due to reduced predation turtle nests laid along roadsides, which compensate for the higher adult mortality populations near roads. To test this, we quantified relative differences in artificial painted (Chrysemys picta) and far from a field experiment controll...

Journal: :Tectonics 2021

During its late-stage evolution, the European Alpine orogen witnessed a northwest-directed propagation of deformation front along an evaporitic basal décollement into foreland. This resulted in decoupling northern Molasse Basin from basement and formation Jura fold-and-thrust belt. Here, we present first absolute age temperature constraints on this using carbonate U-Pb LA-ICP-MS dating clumped ...

2007
Nathan Smith

I discuss observational evidence – independent of the direct spectral diagnostics of stellar winds themselves – suggesting that mass-loss rates for O stars need to be revised downward by roughly a factor of three or more, in line with recent observed mass-loss rates for clumped winds. These independent constraints include the large observed mass-loss rates in LBV eruptions, the large masses of ...

Journal: :Journal of invertebrate pathology 2006
Andrea M Maniscalco Jeffrey D Shields

In 1999, American lobsters, Homarus americanus, from western Long Island Sound (WLIS) experienced a significant mortality. In 2001 and 2004, the eyes and eyestalks of lobsters from WLIS and central LIS were examined for histopathological changes. Idiopathic lesions were identified in the ommatidia and optic nerve fibers proximal to the ommatidia in 29 (56%) of the lobsters from LIS. Lesions wer...

1999
Pawan Kumar

NGC 1068 is one of the best studied Seyfert II galaxies, for which the blackhole mass has been determined from the Doppler velocities of water maser. We show that the standard α-disk model of NGC 1068 gives disk mass between the radii of 0.65 pc and 1.1 pc (the region from which water maser emission is detected) to be about 7x10 M⊙ (for α = 0.1), more than four times the blackhole mass, and a T...

Journal: :The Journal of animal ecology 2009
Jonathan A Coddington Ingi Agnarsson Jeremy A Miller Matjaz Kuntner Gustavo Hormiga

1. Frequency of singletons - species represented by single individuals - is anomalously high in most large tropical arthropod surveys (average, 32%). 2. We sampled 5965 adult spiders of 352 species (29% singletons) from 1 ha of lowland tropical moist forest in Guyana. 3. Four common hypotheses (small body size, male-biased sex ratio, cryptic habits, clumped distributions) failed to explain sing...

Journal: :Medical and veterinary entomology 1990
J A Mann R E Stinner R C Axtell

Parasitoid-induced mortality of house fly, Musca domestica L., pupae and parasitoid progeny emergence by four species of pteromalid parasitoids, Muscidifurax raptor Girault & Sanders, M.zaraptor Kogan & Legner, Spalangia cameroni Perkins and S.endius Walker, were determined for a 24 h exposure period using parasitoid: host ratios ranging from 1:2 to 1:50. When the number of parasitoids was held...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2016
J Ragusa-Netto

In this study, I tested the effect of Syagrus loefgrenii nut number on the removal intensity by rodents across seasons. Also, I assessed both S. loefgrenii fruit production, and dispersion pattern to analyze the relationship between these parameters and nut removal. Trials were performed (autumn, winter, spring, and summer), in which endocarps were placed inside trays (5, 15, and 40 endocarps) ...

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