scholarly journals Riyadh Transportation History and Developing Vision

2016 ◽  
Vol 216 ◽  
pp. 163-171 ◽  
Author(s):  
Majid Aldalbahi ◽  
Guy Walker
Keyword(s):  
Transportation History

scholarly journals Assessment and Analysis of Precambrian Basement Soil Deposits Using Grain Size Distribution

2020 ◽  
Vol 66 (4) ◽  
pp. 235-243
Author(s):  
Gideon Layade ◽  
Charles Ogunkoya ◽  
Victor Makinde ◽  
Kehinde Ajayi
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Textural Properties ◽  
Soil Samples ◽  
Sieve Analysis ◽  
Precambrian Basement ◽  
Statistical Parameters ◽  
Fine Grained ◽  
Transportation History

AbstractThe article presents the grain size distribution of soil samples from the Precambrian basement within the purview of the textural properties, deduced transportation history and the numerical assessments using statistical parameters. The fourteen soil samples collected from the study area were subjected to sieve analysis in the laboratory for the determination of their grain size distribution. The statistical parameters’ study includes the graphic mean, skewness, sorting and kurtosis. The result of the analysis of the soil samples ranged from coarse to fine-grained samples, moderately and poorly sorted, positively and negatively skewed and the kurtosis also shows leptokurtic as the most dominant which suggests the samples poorly distributed and moderately sorted at the centre of the grain size distribution. These results also suggest the geological environment of the soil samples could be responsible for the poorly and moderately sorted exhibited by the samples deposited in the location.

The Sino-Laos Railway and the Connectivity Potential for a Small State

2021 ◽  
pp. 2150006
Author(s):  
Tai Wei Lim
Keyword(s):  
Asian Country ◽  
Southeast Asian ◽  
Tourism Industry ◽  
Railway Network ◽  
Stable Regime ◽  
Chinese Perspective ◽  
Railway System ◽  
Belt And Road ◽  
Transportation History ◽  
The Moment

The Laos National Railway network is a milestone in the country’s transportation history. From the Chinese perspective, the China–Laos Economic Corridor (CLEC) is a vital sub-component of China’s Belt and Road Initiative (BRI). From the Laotian perspective, the Southeast Asian country intends to transform from a land-locked country (the only country within ASEAN or the Association of Southeast Asian Nations) into a land-linked country with Chinese equipment and infrastructure inputs. Through the railway system, Laos will be connected to maritime ports in China, Cambodia, Thailand and Vietnam, potentially benefiting its tourism industry, workforce mobility, land sales, services/retail outlets and intra- as well as extra-ASEAN trade and investments. Laos has proven to be the most politically stable, regime-reliable, perhaps complementary entity that has a stake in the success of the pan-Asian railway for the sake of its own economic development at the moment. At least, it does not require complicated diplomatic efforts, unlike the cases of Vietnam and Myanmar at this point of time. Thus, it may turn out to be a win–win situation for both the Laotians and the Chinese.

Helmet efficacy against concussion and traumatic brain injury: a review

2017 ◽  
Vol 126 (3) ◽  
pp. 768-781 ◽  
Author(s):  
Je Yeong Sone ◽  
Douglas Kondziolka ◽  
Jason H. Huang ◽  
Uzma Samadani
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Literature Review ◽  
Scientific Data ◽  
Effective Prevention ◽  
Mortality And Morbidity ◽  
The Us ◽  
Ancient Times ◽  
Prevention Method ◽  
Transportation History

Helmets are one of the earliest and most enduring methods of personal protection in human civilization. Although primarily developed for combat purposes in ancient times, modern helmets have become highly diversified to sports, recreation, and transportation. History and the scientific literature exhibit that helmets continue to be the primary and most effective prevention method against traumatic brain injury (TBI), which presents high mortality and morbidity rates in the US. The neurosurgical and neurotrauma literature on helmets and TBI indicate that helmets provide effectual protection against moderate to severe head trauma resulting in severe disability or death. However, there is a dearth of scientific data on helmet efficacy against concussion in both civilian and military aspects. The objective of this literature review was to explore the historical evolution of helmets, consider the effectiveness of helmets in protecting against severe intracranial injuries, and examine recent evidence on helmet efficacy against concussion. It was also the goal of this report to emphasize the need for more research on helmet efficacy with improved experimental design and quantitative standardization of assessments for concussion and TBI, and to promote expanded involvement of neurosurgery in studying the quantitative diagnostics of concussion and TBI. Recent evidence summarized by this literature review suggests that helmeted patients do not have better relative clinical outcome and protection against concussion than unhelmeted patients.

Getting Around: Exploring Transportation History

2004 ◽  
Vol 26 (2) ◽  
pp. 106-107
Author(s):  
Jon Axline
Keyword(s):  
Transportation History
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