Results 101 to 110 of about 2,807 (301)

Isoetes ×atruensis (Isoetaceae – Lycopodiopsida), a new interspecific sterile hybrid from Rajasthan of Western India

open access: yesNordic Journal of Botany, EarlyView.
Isoetes ×atruensis hyb. nov. is shown to be a triploid (2n = 3× = 33 + 1) sterile interspecific hybrid between diploid (2n = 2× = 22 + 1) I. coromandelina and tetraploid (2n = 4× = 44 + 1) I. rajasthanensis. It has been found in two locations in Rajasthan, India.
Sarvesh Kumar Singh   +4 more
wiley   +1 more source

Model of Queuing in the Railway Level Crossings (Case Study: Railway Level Crossings in Jemursari Surabaya) [PDF]

open access: yesProceedings of the 11th Asia Pacific Transportation and the Environment Conference (APTE 2018), 2019
Mahardika Putra   +2 more
openaire   +1 more source

Urban wild meat and pangolin consumption across southern forested Cameroon: The limited influence of COVID‐19

open access: yesPeople and Nature, EarlyView.
Abstract Overexploitation of wildlife is pervasive in many tropical regions, and in addition to being a significant conservation and sustainability concern, it has received global attention given discussions over the origins of zoonotic disease outbreaks.
Franklin T. Simo   +8 more
wiley   +1 more source

Impact of Electric Motor Selection on the Efficiency and Reliability of Level Crossing Gate Drives in Polish Railway Infrastructure

open access: yesEnergies
Railway barrier drives are key components of railway infrastructure and have a direct impact on traffic safety. Many of the commonly used drives are mechanical EEG-type barrier drives.
Zbigniew Goryca   +4 more
doaj   +1 more source

Evaluation of cost-effective systems for railway level-crossing protection [PDF]

open access: yes, 2000
Railway safety is a crucial aspect of rail operation. The study focuses on the railway level crossing problems in the region and effective protection systems.
UN.ESCAP
core  

Integrating habitat suitability, socioeconomics, and infrastructure to assess global biological invasion risk under climate change: A case study of the rice stem borer, Chilo suppressalis

open access: yesPest Management Science, EarlyView.
We developed an invasion risk index framework that integrates socioeconomic and environmental data using an entropy‐weighting method. The case study highlights the need for region‐specific biosecurity measures for Chilo suppressalis. Abstract BACKGROUND Biological invasion risk is a multifaceted concept that, according to the Food and Agriculture ...
Jinsol Hong   +11 more
wiley   +1 more source

Survey-based Impact of Influencing Parameters on Level Crossings Safety

open access: yesPromet (Zagreb), 2016
Level crossing (LC) accidents are a significant safety challenge worldwide and for that reason they have been subject of numerous research activities. Joint conclusion is that human behaviour is the main cause of accidents. This study examines how and to
Martin Starčević   +2 more
doaj   +1 more source

Mobile warning system for railway level crossing

open access: yes, 2007
The aim of the work was to implement and test an in-vehicle warning system for railway level crossings. A prototype was built and tested on HankoKarjaa railway line in southern Finland. The prototype was based on GPS, GPRS and laptop computers. The operation of the invehicle warning system was compared to fi xed warning system installed on level ...
Öörni Risto, Virtanen Ari
openaire   +2 more sources

Extraction of Critical Scenarios in a Railway Level Crossing Control System

open access: yesInternational Journal of Computers Communications & Control, 2007
This paper deals with the safety of the level crossing control system. We propose one way of the safety evaluation witch consist on the extraction of feared scenarios in the Petri net model of the system. We use ESA_PetriNet tool (Extraction Scenarios & Analyzer by Petri Net model) that was developed in the aim of extraction of feared scenarios
Malika Medjoudj, Pascal Yim
openaire   +2 more sources

Making the case for low cost railway level crossings [poster abstract] [PDF]

open access: yes, 2011
This paper discusses the challenges of making a case for the adoption of low cost railway level crossings in Australia. Several issues are discussed in this paper including legal issues associated with the treatment of low-exposure passive crossings with
Gildersleeve, Matthew   +1 more
core  

Home - About - Disclaimer - Privacy