نتایج جستجو برای: concentrated force

تعداد نتایج: 229291  

Journal: :Biotechnology and bioengineering 2016
Mo Chen Michael E Himmel David B Wilson John W Brady

Molecular dynamics (MD) simulations were used to study substrate recognition by the family 48 exocellulase CelF from Clostridium cellulolyticum. It was hypothesized that residues around the entrance of the active site tunnel of this enzyme might serve to recognize and bind the substrate through an affinity for the cellulose monomer repeat unit, β-d-glucopyranose. Simulations were conducted of t...

2013
Hua Yan

Title of Thesis: DOES SENSE OF COMMUNITY MEDIATE THE EFFECTS OF NEIGHBORHOOD DISADVANTAGE ON ADOLESCENT DRUG USE? Hua Yan, Master of Arts, 2013 Directed By: Professor Terence Thornberry, Department of Criminology and Criminal Justice This thesis examines the relationship between neighborhood disadvantage, sense of community, and adolescent drug use. Prior research has found that sense of commun...

Journal: :Frontiers in Earth Science 2023

The elastic foundation beam theory has been widely used in civil engineering, including railway, tunnel, and building foundations. With the development of fabricated structures, more beams need to be prestressed. In order explore frame with anchor-cable slope reinforcement project, this article, prestress is applied both ends beam. Then, according calculation method internal force deformation u...

Journal: :Stavební obzor 2021


 Coupling beam damper can be easily repaired in the post-earthquake, which dissipate seismic energy of structure earthquake action. In this paper, mitigation efficiency coupling shear wall is analysed by using fast nonlinear analysis method. Meanwhile, effect layout location and number dampers on are studied. Finally, performance parameter also analysed. The results indicate that: story f...

2002
Thomas J. Holmes

What is the force of attraction of cities? Leading explanations include the advantages of a concentrated market and knowledge spillovers. This paper develops a model of firm location decisions in which it is possible to distinguish the importance of the concentrated-market motive from other motives, including knowledge spillovers. A key aspect of the model is that it allows for the firm to choo...

2012
Shalini A. Tendulkar Karestan C. Koenen Erin C. Dunn Stephen Buka S. V. Subramanian

BACKGROUND Social support is frequently linked to positive parenting behavior. Similarly, studies increasingly show a link between neighborhood residential environment and positive parenting behavior. However, less is known about how the residential environment influences parental social support. To address this gap, we examine the relationship between neighborhood concentrated disadvantage and...

Journal: :Development and psychopathology 2014
Man-Kit Lei Ronald L Simons Mary Bond Edmond Leslie Gordon Simons Carolyn E Cutrona

Social disorganization theory posits that individuals who live in disadvantaged neighborhoods are more likely to engage in antisocial behavior than are those who live in advantaged neighborhoods and that neighborhood disadvantage asserts this effect through its disruptive impact on social ties. Past research on this framework has been limited in two respects. First, most studies have concentrat...

Journal: :Science 2014
Letian Dou Yonghao Zheng Xiaoqin Shen Guang Wu Kirk Fields Wan-Ching Hsu Huanping Zhou Yang Yang Fred Wudl

One of the challenges in polymer science has been to prepare large-polymer single crystals. We demonstrate a visible light-triggered quantitative topochemical polymerization reaction based on a conjugated dye molecule. Macroscopic-size, high-quality polymer single crystals are obtained. Polymerization is not limited to single crystals, but can also be achieved in highly concentrated solution or...

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