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A highway runs through it: Mountain lions in Southern California face genetic decay（图）
genetic decay Southern California
2014/12/1
Cut off by freeways and human development, mountain lions in Southern California are facing a severe loss of genetic diversity, according to a new study led by the University of California, Davis, in ...
New Study Results the Secondary Settlement for Vertical Total Stress on Highway Construction built on Soft Ground in the Mekong Delta
Soft soil creep soil improvement secondary settlement soft clay pore water pressure preconsolidation pressure
2012/4/20
Today, to calculate secondary settlement for vertical total stress by the analytic formula, we often use the formula of Raymond and Wahls (1976) This formula does not reflect that the secondary settle...
Stability Analysis of Highway Tunnel Portal Slope in Shiyan Area
Highway Tunnel Landslide Mechanism Shiyan Area Stability Analysis
2011/12/20
Under the control of the tow-Yun fracture, the geological conditions are complicated and the rock strata is broken in Shiyan area ,in the northwest of Hubei province, and the rock mass is weathered in...
The Analysis and Solvement of some Geotechnical Topics in Post-Disaster Reconstruction Highway
Filling Gabion Retaining Wall Geotechnical Problems Landslide Reconstruction
2011/12/20
The highway in earthquake region suffered serious damage during Wenchuan’s Earthquake in 2008. In all projects of post-disaster reconstruction, the reconstruction of highway and making highway work on...
Study on Key Technology in the Control Surveying of Jinan-Qingdao Highway’s South Line
Division of Points’ Coordinates Elevation Values’ Steps GPS Control Network Super Highway Systemic Conformance
2011/12/21
The south line of Jinan Qingdao highway (which is short of Ji-Qing south line) spans 281km, whose geomorphy is mainly composed by mountain lands and hills. Approximately, it runs from east to west and...
Research on the Relief Degree of Land Surface (RDLS) Calibration Coefficient of Highway in Plateau Mountainous Area
Least Square Method (LSM) RDLS RDLS Calibration Coefficient Regression Model Traffic Engineering
2011/12/20
Different reasons leaded to highway circuitous between plateau mountainous area and plain lightly undulate area were analyzed. The main reason which leaded to highway circuitous is the RDLS was conclu...
Research on Mountain Highway Traffic Volume Transferred by Ports
Mountain Highway Port Transportation Traffic Volume
2011/12/16
With the expansion of port handling capacity and economic benefit, large mountains highway traffic volume are aggregated to and transported by ports, and large increment of traffic volume of mountains...
Activity Degree Evaluation of Glacial Debris Flow along International Karakorum Highway (KKH) Based on Fuzzy Theory
Activity Degree Evaluation Fuzzy Evaluation Method Glacial Debris Flow International Karakorum Highway (KKH)
2011/12/20
The area of international Karakorum Highway(KKH), is an area with dense and frequent glacial debris flow disasters due to unique geology, geomorphology and landform conditions,which connects northern ...
Spring-block model for a single-lane highway traffic
highway traffic disorder induced phase transition spring-block models
2010/12/28
A simple one-dimensional spring-block chain with asymmetric interactions is considered to model an idealized single-lane highway traffic.
The Need to Regularise Activities of Illegal Small-Scale Mining in Ghana: A Focus on the Tarkwa-Dunkwa Highway*
Law Small-Scale Mining Regularise Ghana
2013/3/6
Southwest Ghana is a major gold producing region. The current high gold price has attracted hundreds of unemployed youth to undertake small-scale mining (SSM). Most of these miners operate illegally e...
Short-term variation in near-highway air pollutant gradients on a winter morning
Short-term variation near-highway air pollutant a winter morning
2010/9/21
Quantification of exposure to traffic-related air pollutants near highways is hampered by incomplete knowledge of the scales of temporal variation of pollutant gradients. The goal of this study was to...
Application of a Three-Stage Sequential Extraction Procedure for the Determination of Extractable Metal Contents in Highway Soils
Sequential extraction heavy metals highway soils enrichment flame atomic absorption spectrometry
2010/4/21
A sequential extraction procedure, a three-step protocol proposed by the Standards, Measurements and Testing programme (SM & T--formerly BCR) of the European Union, was applied to soil samples for the...
Influences of Traffic Emissions and Meteorological Conditions on Ambient PM10 and PM2.5 Levels at a Highway Toll Station
PM10 PM2.5 Traffic emission Meteorological condition Highway toll station
2016/3/29
The PM10 and PM2.5 levels at a highway toll station were monitored from October to December 2008. Experimental results
show that hourly average PM10 and PM2.5 levels at the highway toll station were ...
Particle number, particle mass and NOx emission factors at a highway and an urban street in Copenhagen
Particle number particle mass NOx emission factors an urban street Copenhagen
2010/8/12
This paper presents measurements of traffic-generated gas and particle pollution at two sites, one near a major highway and one near a busy urban street in Copenhagen, Denmark. Both sites were equippe...
Optimal design of storm water inlets for highway drainage
Optimal design storm water inlets highway drainage
2009/12/4
A new methodology and computational model are developed for direct evaluation of an optimal storm water inlet design. The optimal design is defined as the least-cost combination of inlet types, sizes ...