نتایج جستجو برای: headed drums

تعداد نتایج: 6143  

Journal: :Agriculture 2022

Aiming at the problems of high missed-pickup rate and crushed caused by different types peanut harvester pickup drums, tracking a field comparative experiment from 2020 to 2021, rate, quality distribution, distribution rule pods with degrees crushing observed in two varieties drums were studied. Three kinds pod-pickup set up: axial flow (T1), tangential (T2) tangential–axial (T3), they installe...

Journal: :Proceedings. Biological sciences 2009
Graham R Scott Stuart Egginton Jeffrey G Richards William K Milsom

Bar-headed geese migrate over the Himalayas at up to 9000 m elevation, but it is unclear how they sustain the high metabolic rates needed for flight in the severe hypoxia at these altitudes. To better understand the basis for this physiological feat, we compared the flight muscle phenotype of bar-headed geese with that of low altitude birds (barnacle geese, pink-footed geese, greylag geese and ...

Journal: :The Journal of Cell Biology 1998
William O. Hancock Jonathon Howard

A single kinesin molecule can move for hundreds of steps along a microtubule without dissociating. One hypothesis to account for this processive movement is that the binding of kinesin's two heads is coordinated so that at least one head is always bound to the microtubule. To test this hypothesis, the motility of a full-length single-headed kinesin heterodimer was examined in the in vitro micro...

Journal: :African health sciences 2004
Beatrice Amuge Fred Wabwire-Mangen Chilunga Puta G W Pariyo Nathan Bakyaita Sarah Staedke Moses Kamya Olico-Okui

BACKGROUND The number of orphans in Rakai district, Uganda is estimated to be 34,902 (OCBO, 2000) which translates into 28% of children under the age of 18 years. Young people who have been orphaned and as a result became heads of households must look after themselves and their siblings. These children are likely to be faced with several health problems and have to take crucial life decisions w...

Background: Employed and unemployed women have their own problems. This could be more important for female headed households. Hardiness and resiliency are among the characteristics that are very important for fighting against the problems of life. The aim of this study is to Compare the psychological hardiness and resiliency of employed and unemployed female headed households.   Materials and ...

2005
Sven Gnutzmann Uzy Smilansky Niels Sondergaard

Several types of systems have been put forward during the past few decades to show that there exist isospectral systems which are metrically different. One important class consists of Laplace–Beltrami operators for pairs of flat tori in R with n 4. We propose that the spectral ambiguity can be resolved by comparing the nodal sequences (the numbers of nodal domains of eigenfunctions, arranged by...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Thomas J Purcell Carl Morris James A Spudich H Lee Sweeney

Myosin V is a two-headed molecular motor that binds six light chains per heavy chain, which creates unusually long lever arms. This motor moves processively along its actin track in discrete 36-nm steps. Our model is that one head of the two-headed myosin V tightly binds to actin and swings its long lever arm through a large angle, providing a stroke. We created single-headed constructs with di...

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