نتایج جستجو برای: k caucasica

تعداد نتایج: 377916  

2010
Charles I. Abramson Tugrul Giray T. Andrew Mixson Sondra L. Nolf Harrington Wells Aykut Kence Meral Kence

Three experiments are described investigating whether olfactory repellents DEET and butyric acid can support the classical conditioning of proboscis extension in the honeybee, Apis mellifera caucasica (Hymenoptera: Apidae). In the first experiment DEET and butyric acid readily led to standard acquisition and extinction effects, which are comparable to the use of cinnamon as a conditioned stimul...

2005
Guy Bar-Oz Daniel S. Adler

We present the results of a detailed taphonomic and zooarchaeological study of the faunal remains from the late Middle Palaeolithic (LMP) and early Upper Palaeolithic (EUP) bone assemblage of Ortvale Klde, Georgian Republic. A series of taphonomic tests and analyses are employed to reconstruct the depositional history of the bone assemblage and investigate LMP (Neanderthal) and EUP (Modern huma...

Journal: :The Journal of experimental biology 2014
Manuel A Giannoni-Guzmán Arian Avalos Jaime Marrero Perez Eduardo J Otero Loperena Mehmet Kayım Jose Alejandro Medina Steve E Massey Meral Kence Aykut Kence Tugrul Giray José L Agosto-Rivera

Circadian rhythms in social insects are highly plastic and are modulated by multiple factors. In addition, complex behaviors such as sun-compass orientation and time learning are clearly regulated by the circadian system in these organisms. Despite these unique features of social insect clocks, the mechanisms as well as the functional and evolutionary relevance of these traits remain largely un...

2017
Julieta L Mateos Vicky Tilmes Pedro Madrigal Edouard Severing René Richter Colin W M Rijkenberg Paweł Krajewski George Coupland

Genome-wide landscapes of transcription factor (TF) binding sites (BSs) diverge during evolution, conferring species-specific transcriptional patterns. The rate of divergence varies in different metazoan lineages but has not been widely studied in plants. We identified the BSs and assessed the effects on transcription of FLOWERING LOCUS C (FLC) and PERPETUAL FLOWERING 1 (PEP1), two orthologous ...

2011
Lucio BONATO Alessandro MINELLI

Diagnosis, circumscription, species-level taxonomy and geographical occurrence of the genus Clinopodes C. L. Koch, 1847 (Chilopoda, Geophilomorpha, Geophilidae) are revised by integrating published information with new evidence on its morphological diversity. Clinopodes is clearly distinguishable from all other geophilid lineages by a combination of features mainly in the forcipular segment, th...

2014
PAUL N. PEARSON HELEN K. COXALL

Hantkenina is a distinctive planktonic foraminiferal genus characterized by the presence of tubulospines (robust hollow projections) on each adult chamber, from Middle and Upper Eocene marine sediments worldwide. Here we illustrate its evolutionary origin using c. 150 specimens from 30 stratigraphic intervals in two sediment cores from Tanzania. The specimens, which span an estimated time inter...

Journal: :The Journal of parasitology 2012
Sadie J Ryan Justin S Brashares Chesley Walsh Katherine Milbers Cailean Kilroy Colin A Chapman

Fecal samples from 55 free-ranging olive baboons (Papio anubis) in Mole National Park, Ghana, were collected 22 June-7 July 2008 and analyzed for gastrointestinal parasites. This is the first survey of baboon gastrointestinal parasites in Ghana and provides baseline data for this area. Ninety-three percent of samples were infected, leaving 7% with no parasites observed. Of those infected, there...

B Mohammadi, H Mehraban,

We analyze three-body decays of and . Under the factorization approach, there are tree level diagrams for these decay modes and the transition matrix element of decay is factorized into a form factor multiplied by decay constant and form factor multiplied into weak vertices form factor. The transition matrix element of decay is also factorized into a form factor multiplied into weak vertic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1380

خیلی از اجزاء مورد استفاده در مهندسی دارای ناپیوستگی هندسی همچون پله ای شکل ها، جاخارها و سوراخهای روغن - شیارها و رزوه ها هستند که عموما" به صورت ناچ معرفی می شوند. ناچها باعث افزایش تنش - کرنش در ریشه هایشان می شوند. ترکهای خستگی که عموما" باعث شکست قطعات ناچدار می شوند از ناچ شروع شده و گسترش پیدا می کنند به این دلیل در اینجا رفتار خستگی قطعات ناچدار بررسی شده است . در این پروژه خستگی دو نوع...

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