Results 91 to 100 of about 51,375 (298)

Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview

Chemistry – A European Journal, EarlyView.
The graphical abstract summarizes the review “Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview”, highlighting representative Pd(II)‐catalyzed methods for the β‐arylation of α‐amino acids. Key mechanistic features, substrate diversity, and synthetic relevance of these transformations are showcased. Abstract Metal‐catalyzed C─
Davide Illuminati, Claudio Trapella, Vinicio Zanirato, Virginia Cristofori, Anna Fantinati   +4 more
wiley   +1 more source

Bicycle Urbanism, Blog 7 [PDF]

, 2015
Student blog posts from the Great VCU Bike Race ...
Sankoh, Mariam
core   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

An Epidemiological Study of the Risk Factors of Bicycle-Related Falls Among Japanese Older Adults

Journal of Epidemiology, 2019
Background: Considering the rate of growth of the older population in several countries, accidental falls in older cyclists are expected to increase. However, the prevalence and correlates of bicycle-related falls (BR-falls) are unknown.
Ryota Sakurai, Hisashi Kawai, Hiroyuki Suzuki, Susumu Ogawa, Hunkyung Kim, Yutaka Watanabe, Hirohiko Hirano, Kazushige Ihara, Shuichi Obuchi, Yoshinori Fujiwara   +9 more
doaj   +1 more source

The Power of Trails for Promoting Physical Activity in Communities [PDF]

, 2011
Highlights findings about trail characteristics and social conditions that attract regular users, how they influence levels of physical activity among different populations, and what it takes to build new trails.

core  

Dynamic Reactivity: Reversible Reaction of a Phosphinine–Borane Adduct With Water and Double Hydrophosphination

Chemistry – A European Journal, EarlyView.
A phosphinine–borane Lewis pair shows a dynamic mode of water addition, revealing reversible and regioselective transformations that expand the reactivity of aromatic phosphorus heterocycles and open pathways to stimuli‐responsive systems for catalysis, small‐molecule activation, and functional materials.
Samantha Frank, Ádám Horváth, Júlia Boglárka Horváth, Chiara Interdonato, Moritz J. Ernst, Priya Kumar, Zoltán Benkő, Christian Müller   +7 more
wiley   +1 more source

Benzo[cd]azulenyl: A Structural Isomer of Phenalenyl—Synthesis and Properties of Its Tri‐tert‐butyl‐substituted Derivative and Formation of a Thermal‐ and Photoresponsive σ‐Dimer

Chemistry – A European Journal, EarlyView.
Benzo[cd]azulenyl, a nonalternant isomer of phenalenyl, is identified as a new member of the nonalternant hydrocarbon radical family. The tri‐tert‐butyl substituted derivative forms a stable σ‐dimer in the solid state. Upon exposure to external stimuli such as light and heat, the σ‐bond of the dimer dissociates, producing the monomeric radical.
Kaho Takeuchi, Akihito Konishi, Makoto Yasuda   +2 more
wiley   +1 more source

A policy and institutional analysis of urban transport system: the case of Pakistan’s Lahore in the context of COVID-19

Cogent Social Sciences
The bicycle is recognized as a sustainable mode of transport, yet in the developing world, its use is hindered by several factors. The COVID-19 pandemic, with its emphasis on isolation, created a changed travel pattern and thus an experimental ...
Quratulain Ayaz, Mohammed Abubakari, Jawad Hussain   +2 more
doaj   +1 more source

Promoting Healthy Communities and Preventing Childhood Obesity: Trends in Recent Legislation [PDF]

, 2010
Summarizes state legislation enacted in 2009 in the areas of healthy eating and physical activity, such as school nutrition and BMI measurements, and healthy community design and access to healthy food, such as safe routes to school and farmers ...
Amy Winterfeld, Douglas Shinkle, Larry Morandi   +2 more
core  

Tire tracks and integrable curve evolution

, 2018
We study a simple model of bicycle motion: a segment of fixed length in multi-dimensional Euclidean space, moving so that the velocity of the rear end is always aligned with the segment.
Bor, Gil, Levi, Mark, Perline, Ron, Tabachnikov, Sergei   +3 more
core   +1 more source