نتایج جستجو برای: crowding

تعداد نتایج: 6807  

2014
Shigeyoshi Tsutsui

This paper proposes a novel crowding method, which we call “Crowding with Asymmetric Crossover (CAX)” that can be applied to traditional 2-parent crossover operators. The Asymmetric Crossover operator begins with two parents. Then two offspring individuals are created, each offspring taking more characteristics from one of the two parents. This is an easy method to perform replacement between p...

Journal: :Chemical communications 2010
Arivazhagan Rajendran Shu-ichi Nakano Naoki Sugimoto

We now present the first example in which triplet repeat DNAs adopt the i-motif structure at neutral pH by molecular crowding. Crowding stabilized the i-motif and the pK(a) of N3 of cytosine was raised in such a microenvironment. Molecular crowding is known to accelerate the formation of the multi-stranded i-motif while the triplet repeats adopt the single-strand structure.

2014
Helena W. Qi Priyanka Nakka Connie Chen Mala L. Radhakrishnan

Macromolecular crowding within the cell can impact both protein folding and binding. Earlier models of cellular crowding focused on the excluded volume, entropic effect of crowding agents, which generally favors compact protein states. Recently, other effects of crowding have been explored, including enthalpically-related crowder-protein interactions and changes in solvation properties. In this...

Journal: :Emergency medicine journal : EMJ 2015
Adrian Boyle James Coleman Yasmin Sultan Vijayasankar Dhakshinamoorthy Jacqueline O'Keeffe Pramin Raut Kathleen Beniuk

INTRODUCTION Emergency department (ED) crowding is recognised as a major public health problem. While there is agreement that ED crowding harms patients, there is less agreement about the best way to measure ED crowding. We have previously derived an eight-point measure of ED crowding by a formal consensus process, the International Crowding Measure in Emergency Departments (ICMED). We aimed to...

2012
Ann D Colosia Anthony Masaquel Caroline Breese Hall Amy M Barrett Parthiv J Mahadevia Ram Yogev

BACKGROUND The objective of this literature review was to determine whether crowding in the home is associated with an increased risk of severe respiratory syncytial virus (RSV) disease in children younger than 5 years. METHODS A computerized literature search of PubMed and EMBASE was conducted on residential crowding as a risk factor for laboratory-confirmed RSV illness in children younger t...

2014
Wesley Chaney Jason Fischer David Whitney

Because the environment is cluttered, objects rarely appear in isolation. The visual system must therefore attentionally select behaviorally relevant objects from among many irrelevant ones. A limit on our ability to select individual objects is revealed by the phenomenon of visual crowding: an object seen in the periphery, easily recognized in isolation, can become impossible to identify when ...

Journal: :Vision Research 2002
Dennis M Levi Srividhya Hariharan Stanley A Klein

Amblyopic vision is characterized by reduced spatial resolution, and inhibitory spatial interactions ("crowding") that extend over long distances. The present paper had three goals: (1) To ask whether the extensive crowding in amblyopic vision is a consequence of a shift in the spatial scale of analysis. To test this we measured the extent of crowding for targets that were limited in their spat...

Journal: :The journal of physical chemistry. B 2015
Bryanne Macdonald Shannon McCarley Sundus Noeen Alan E van Giessen

The dense, heterogeneous cellular environment is known to affect protein stability through interactions with other biomacromolecules. The effect of excluded volume due to these biomolecules, also known as crowding agents, on a protein of interest, or test protein, has long been known to increase the stability of a test protein. Recently, it has been recognized that attractive protein-crowder in...

2017
Yahya B Nakhjavani Farid B Nakhjavani Ahmad Jafari

Aim Stripping is a technique of creating space for correction of crowding by interproximal enamel reduction. This study sought to assess the efficacy of mesial stripping of mandibu-lar deciduous canines for correction of rotated and lingually erupted lateral incisors. Materials and methods This clinical trial was performed on 42 patients with <3 mm mandibular anterior crowding. The required s...

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