VNU Journal of Science: Earth and Environmental Sciences
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Application of Geography Information Systems (GIS) in Building Soil Degradation Map in Da River Basin Segments through Lai Chau, Dien Bien and Son La Provinces
VNU Journal of Science: Earth and Environmental Sciences - Tập 33 Số 1S - 2019
Da River basin segments through Lai Chau, Dien Bien, and Son La Provinces is the
area with high slope, rugged and divided terrain. Hilly land occupies 90% of the
natural area, in which more than 60% is the slope of above 15o. Applying GIS
technology with terrain, soil, climate and land use data to build soil
degradation map of the study area shows that most of the study area is degraded,
with 55% ...
Antifungal Activities of Messmate and Lemongrass Essential Oils Against Aspergillus flavus and Aspergillus niger
VNU Journal of Science: Earth and Environmental Sciences - Tập 33 Số 1S - 2019
Molds damage food and some produce toxins that affect human health. The use of
chemical fungicides is harmful to human health and should be limited. Essential
oils having strong anti-microbial properties are applied in the food industry as
an alternative to chemical preservatives and meet the human needs of using
natural products. This study aimed to determine the inhibition capacity of
messmate (...
Đánh giá ô nhiễm không khí khu vực khai thác vật liệu xây dựng cho 3 loại mỏ điển hình (đá vôi, đá bazan và đất sét) tại huyện Lương Sơn, tỉnh Hòa Bình
VNU Journal of Science: Earth and Environmental Sciences - Tập 32 Số 1S - 2016
Tóm tắt: Bài báo trình bày việc áp dụng chỉ số tổng hợp sử dụng chỉ số ô nhiễm
không khí tương đối RAPIh để đánh giá mức độ ô nhiễm ngày khu vực khai thác vật
liệu xây dựng cho 3 loại mỏ điển hình dựa trên số liệu quan trắc không khí định
kỳ tháng 4 năm 2016. Kết quả thu được cho thấy, tại khu vực khai trường và sản
xuất nguyên liệu, không khí đạt tiêu chuẩn 3733/2002/QĐ-BYT, trong khi không khí
...
ÁP DỤNG BỘ LỌC KALMANCHO VỊ TRÍ ĐIỂM GPS
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 2 - 2018
The article discusses the Kalman filter application for temporal random motion
of the GPS receiver location. The motion of the GPS receiver is a space state
model with time-varying. The spatial state model is usually represented by
linear differential equations with white noise. When the state of space
fluctuates over time, it is represented by Riccati equations, ie nonlinear
differential equation...
Research Establishes the Method of Calculation and Evaluationwater Security Index for TraVinh City, TraVinh Province
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 1S - 2018
Abstract: A multivariate analysis is used to calculate the water security index
(WSI) for quantification of water security level for Tra Vinh city, Tra Vinh.
Wethen propose solutions to improve the effectiveness of management,
exploitation and use of sustainable water resources for TraVinh city.This study
has developed a set of criteria and parameters that serve as a basis for
calculating the WSI ...
Grass Vetiveria zizanioides (L.) Nash for Immobilization of Copper in the Orange-growing Soil Contaminated by the Overuse of Fungicides: A Casestudy at Cao Phong, Hoa Binh
VNU Journal of Science: Earth and Environmental Sciences - Tập 32 Số 2S - 2023
The overuse of copper (Cu) fungicides has resulted in an accumulation of Cu in
the orange-growing soil in Cao Phong district, Hoa Binh province. In this study,
we analyzed the fractionation and accumulation of Cu in soils treated with two
types of fungicides: Norshield 86.2WG and Epolists 85WP. Using vetiver grass
has been known as a approach to immobilize heavy metals in soil, herein, its
effect...
The Relationship Between Cloud Cover and Outgoing Longwave Radiation in the Southern of Vietnam
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 1S - 2018
Abstract: Using 1,00×1,00 resolution data of the Outgoing Longwave Radiation
(OLR) and the cloud cover from NCEP/NCAR during the 1981 – 2012 period, the
relationship between the cloud cover and the OLR in the Southern of Vietnam was
investigated by analyzing and comparing the spatial distribution, temporal
evolution and their correlation. The results show that the characteristics of
the spatial d...
An experiment for assimilating different type of data observations in forecasting heavy rainfall over Central Highlands region due to the impact of hurricane Damrey
VNU Journal of Science: Earth and Environmental Sciences - Tập 35 Số 4 - 2019
This study investigates and assesses the impact of assimilating data types
(observed data surface, sounding, and satellite-derived atmospheric motion
vectors – AMVs) for the Weather Research and Forecasting (WRF) in forecasting
heavy rainfall over Central Highlands region, due to the impact of hurricane
Damrey. The WRF model combined with the Gridpoint Statistical Interpolation
(GSI) system, was s...
Resolving Land Disputes Related to Administrative Boundaries between Hanoi City and Hoa Binh Province
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 2 - 2018
Implementing Directive 364-CT on resolving land disputes related to
administrative boundaries of provinces, districts and communes has been
resolved. Based on that the records and maps of administrative boundaries were
established with the full nature, legal, accurate and uniform stipulated.
However, due to many reasons, the administrative boundary lines are still not
clearly identified in the fie...
Spatial Planning for Development with Rational Using Resources and Environment Protection in the Area of Dung Quat - Quang Ngai City - Ly Son Island District, Quang Ngai Province
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 1 - 2018
Abstract: Spatial planning for economic development with the rational using
resources, and environmental protection in the area of Dung Quat - Quang Ngai
City - Ly Son Island District is a specified form of the master planning towards
sustainable development, cohesive onshore spatial planning and marine spatial
onshore, near-shore islands. The planning is done in a way that links the
approach of t...
Tổng số: 670
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