Evaluating e-bike safety at unsignalized roundabouts using a Bayesian mixed logit model.

Roundabouts are a unique intersection design for calming traffic and improving vehicle safety without traffic signal control. While a few past studies have examined the impact of the roundabout on bicyclist and pedestrian injury crashes, little is known about its effect on the safety of electric bike (e-bike) riders. This study uses a Bayesian mixed logit model to quantify the impact of roundabout geometry, traffic flow and conflict characteristics on the severity of e-bike-vehicle conflicts.

N-acetyltransferase 10 promotes the progression of oral squamous cell carcinoma through N4-acetylcytidine RNA acetylation of MMP1 mRNA.

The pathogenesis of oral squamous cell carcinoma (OSCC) remains unclear. Therefore, clarifying its pathogenesis and molecular-level development mechanism has become the focus of OSCC research. N-acetyltransferase 10 (NAT10) is a crucial enzyme involved in mRNA acetylation, regulating target gene expression and biological functions of various diseases through mediating N4-acetylcytidine (ac4C) acetylation.

Evaluation of pedestrian crossing behavior and safety at uncontrolled mid-block crosswalks with different numbers of lanes in China.

This study aims to investigate pedestrian crossing behavior and safety at uncontrolled mid-block crosswalks with different numbers of vehicle lanes. For this purpose, twelve uncontrolled mid-block crosswalks in Wuhan, China were selected to collect data via field investigation. Descriptive statistics were used to analyze pedestrian crossing behavior, and the distribution of pedestrian-vehicle conflicts on different vehicle lanes was given.

Pedestrian crossing behaviors at uncontrolled multi-lane mid-block crosswalks in developing world.

Introduction: The gap acceptance theory was primarily used to study pedestrian crossing behaviors, in accordance to static gaps that are calculated in the light of the cross section of crosswalk. However, pedestrians will face a series of dynamic gaps (especially at any uncontrolled multi-lane crosswalk) when they decide to cross the street, thus, pedestrians' decisions are made based on the dynamic gaps of each lane.

Method: Pedestrians' crossing behaviors at uncontrolled multi-lane mid-block crosswalk were investigated in this study.

Quantitative analysis of pedestrian safety at uncontrolled multi-lane mid-block crosswalks in China.

A lot of pedestrian-vehicle crashes at mid-block crosswalks severely threaten pedestrian's safety around the world. The situations are even worse in China due to low yielding rate of vehicles at crosswalks. In order to quantitatively analyze pedestrian's safety at multi-lane mid-block crosswalks, the number of pedestrian-vehicle conflicts was utilized to evaluate pedestrian's accident risk.

Nitrogen-Enriched Porous Carbon Coating for Manganese Oxide Nanostructures toward High-Performance Lithium-Ion Batteries.

Manganese oxides are promising high-capacity anode materials for lithium-ion batteries (LIBs) yet suffer from short cycle life and poor rate capability. Herein, we demonstrate a facile in situ interfacial synthesis of core-shell heterostructures comprising nitrogen-enriched porous carbon (pN-C) nanocoating and manganese oxide (MnOx) nanotubes. When MnOx/pN-C serves as an anode material for LIBs, the pN-C coating plays multiple roles in substantially improving the lithium storage performance.

[Cytokeratin expression in cervical lymph nodes of patients with mandibular gingival squamous cell carcinoma].

Objective: To examine the cytokeratin expression in cervical lymph nodes of patients with mandibular gingival squamous cell carcinoma and its clinical significance.

Methods: The data of 42 cases with mandibular gingival squamous cell carcinoma after operation from July 2009 to December 2012 were included. Forty-two patients (male = 27, formale = 15) were included, with a mean age of 54.