نتایج جستجو برای: chirality

تعداد نتایج: 12872  

2002
G. Gilat

Chirality is considered by many scientists to be mainly a geometric concept. There exists also a physical aspect of chirality which is largely being overlooked at. Two examples of mechanical devices are introduced here that represent " Physical Chirality ". These are a rotating water sprinkler and a variant of Crookes' radiometer. When interacting with appropriate media, they both choose only o...

2010
Elena V. Pikuta Richard B. Hoover

Our previous study of chirality led to interesting findings for some anaerobic extremophiles: the ability to metabolize substrates with alternate chirality enantiomers of amino acids and sugars. We have subsequently found that not just separate microbial species or strains but entire microbial communities have this ability. The functional division within a microbial community on proteoand sugar...

Journal: :Nature nanotechnology 2013
Kaihui Liu Xiaoping Hong Qin Zhou Chenhao Jin Jinghua Li Weiwei Zhou Jie Liu Enge Wang Alex Zettl Feng Wang

Single-walled carbon nanotubes are uniquely identified by a pair of chirality indices (n,m), which dictate the physical structures and electronic properties of each species. Carbon nanotube research is currently facing two outstanding challenges: achieving chirality-controlled growth and understanding chirality-dependent device physics. Addressing these challenges requires, respectively, high-t...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2016
Leo Q Wan Amanda S Chin Kathryn E Worley Poulomi Ray

Increasing evidence suggests that intrinsic cell chirality significantly contributes to the left-right (LR) asymmetry in embryonic development, which is a well-conserved characteristic of living organisms. With animal embryos, several theories have been established, but there are still controversies regarding mechanisms associated with embryonic LR symmetry breaking and the formation of asymmet...

Journal: :Physical chemistry chemical physics : PCCP 2015
Aude Bouchet Johanna Klyne Giovanni Piani Otto Dopfer Anne Zehnacker

Chirality effects on the intramolecular interactions strongly depend on the charge and protonation states. Here, the influence of chirality on the structure of the neutral, protonated, and radical cation forms of (1R,2S)-cis- and (1R,2R)-trans-1-amino-2-indanol diastereomers, prototypical molecules with two chiral centers, is investigated in a molecular beam by laser spectroscopy coupled with q...

2008
S. Ciechanowicz

In this paper, we indicate the theoretical possibility of using the decay of polarized muons at rest as a source of the transversely polarized electron antineutrino beam. Such a beam can be used to probe new effects beyond standard model. We mean here new tests concerning CP violation, Lorentz structure and chirality structure of the charged current weak interactions. The main goal is to show h...

Journal: :Nature Materials 2018

Journal: :Bone Marrow Transplantation 2018

Journal: :Recueil des Travaux Chimiques des Pays-Bas 2010

Journal: :Journal of Synthetic Organic Chemistry, Japan 1994

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