نتایج جستجو برای: apical zipping

تعداد نتایج: 30345  

Journal: :Proteins: Structure, Function, and Bioinformatics 2006

Journal: :Nano letters 2009
Niladri Patra Boyang Wang Petr Král

We demonstrate by molecular dynamics simulations that water nanodroplets can activate and guide the folding of planar graphene nanostructures. Once the nanodroplets are deposited at selected spots on the planar nanostructure, they can act as catalytic elements that initiate conformational changes and help to overcome deformation barriers associated with them. Nanodroplets can induce rapid bendi...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

Atsufumi Manabe Flavio Palazzi, Hamid Jafarzadeh, Jun-Ichiro Kinoshita Mikihiro Kobayashi Sousan Shalavi Zahed Mohammadi

The amounts of apical enlargement have been a controversial issue for a long time. The enlargement of the apical part of the canal may severely impact the endodontic prognosis. Enlargement of the apical portion to a larger size may negatively affect the ability to control the filling material during root canal obturation. In addition, an open-apex increases the risk for overfilling which has be...

2014
Steve Pressé Jack Peterson Julian Lee Phillip Elms Justin L. MacCallum Susan Marqusee Carlos Bustamante Ken Dill

Extracting kinetic models from single molecule data is an important route to mechanistic insight in biophysics, chemistry, and biology. Data collected from force spectroscopy can probe discrete hops of a single molecule between different conformational states. Model extraction from such data is a challenging inverse problem because single molecule data are noisy and rich in structure. Standard ...

2014
Adrienne R. Wells Roger S. Zou U. Serdar Tulu Adam C. Sokolow Janice M. Crawford Glenn S. Edwards Daniel P. Kiehart

Drosophila's dorsal closure provides an excellent model system with which to analyze biomechanical processes during morphogenesis. During native closure, the amnioserosa, flanked by two lateral epidermal sheets, forms an eye-shaped opening with canthi at each corner. The dynamics of amnioserosa cells and actomyosin purse strings in the leading edges of epidermal cells promote closure, whereas t...

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