scholarly journals Determination of the affected area of vacuum consolidation method for roadbed ground improvement to adjacent works

2020 ◽  
Vol 61 (HTCS6) ◽  
pp. 33-39
Author(s):  
Dat Chi Nguyen ◽  
Ngan Minh Vu ◽  
Hung Van Pham ◽  
Keyword(s):  
High Efficiency ◽  
Ground Improvement ◽  
Ho Chi Minh City ◽  
Viet Nam ◽  
Vacuum Consolidation ◽  
Technical Factor ◽  
Affected Area ◽  
Construction Works

Vacuum Consolidation Method (VCM) is one of the effective ground improvement treatments applied in construction works in Viet Nam recently. However, its affected area impacts to the adjacent works has not been studied in detail and standarised, leading to unexpected incidents. This paper proposes a method to determine the affected area of vacuum consolidation method then propose solutions to protect works. The result was demonstrated at approach road of Vam Sat 2 bridge project, located in Can Gio district, Ho Chi Minh city and shows high efficiency, ensuring economic-technical factor.

scholarly journals Application of livelihood vulnerability index in evaluating household’s livelihood vulnerability to climate change in Can Gio district, Ho Chi Minh city, Vietnam

2021 ◽  
Vol 63 (3) ◽  
pp. 78-84
Author(s):  
Nguyen Phuong Tan Le ◽  
◽  
Nguyen Khoi Dao ◽  
Keyword(s):  
Climate Change ◽  
Vulnerability Index ◽  
Coastal Areas ◽  
Livelihood Strategies ◽  
Ho Chi Minh City ◽  
Viet Nam ◽  
Climate Conditions ◽  
Demographic Profile ◽  
Vulnerability To Climate Change

Climate change has directly and indirectly affected the livelihood of households that rely on climate conditions for their livelihood in the coastal areas of Vietnam. This study applied the livelihood vulnerability index (LVI) to assess the vulnerability of a household’s livelihood under the effect of climate change in one of the most highly vulnerable areas of Viet Nam - the Can Gio coastal district of Ho Chi Minh city. Based on a survey of 107 households within six communes and one town located in the Can Gio district, the LVI was calculated at both district and commune scales. The results reveal that the district of Can Gio is at a moderate vulnerability level (LVI=0.303), while the Ly Nhon commune (LVI=0.334) is the most vulnerable of the seven surveyed areas. Additionally, the aspects of livelihood strategies (0.516), socio-demographic profile (0.391), and food (0.385) are critical to the determination of the livelihood vulnerability of the seven surveyed communes.

scholarly journals Uncovering prevalence of pangolin consumption using a technique for investigating sensitive behaviour

Oryx ◽  
2021 ◽  
pp. 1-9
Author(s):  
Alegria Olmedo ◽  
Diogo Veríssimo ◽  
E.J. Milner-Gulland ◽  
Amy Hinsley ◽  
Huong Thi Thu Dao ◽  
...  
Keyword(s):  
Representative Sample ◽  
Ho Chi Minh City ◽  
Viet Nam ◽  
Rice Wine ◽  
Population Declines ◽  
Demographic Groups ◽  
Prevalence Estimates ◽  
The 1960S ◽  
Local Use ◽  
Estimate Prevalence

Abstract Pangolins have been exploited throughout history but evidence points to population declines across parts of their ranges since the 1960s, especially in Asia. This is the result of overexploitation for local use and international trade and trafficking of their derivatives. The prevalence of the consumption of pangolin products has been estimated for different localities in Viet Nam but, considering that national legislation prohibits the purchase of pangolin products, previous research has not accounted for the potential for biased responses. In this study, we treat pangolin consumption as a sensitive behaviour and estimate consumption prevalence of pangolin meat, scales and wine (a whole pangolin or pangolin parts or fluids soaked or mixed in rice wine) in Ho Chi Minh City using a specialized questioning method, the unmatched count technique. We also characterize the demographics of consumers. Our results suggest there is active consumption of all three pangolin products, with a best-estimate prevalence of 7% of a representative sample of Ho Chi Minh City residents for pangolin meat, 10% for scales and 6% for wine. Our prevalence estimates exceed estimates from direct questions, providing evidence for the sensitivity of pangolin consumption. We compared our analysis of consumer characteristics with existing profiles of pangolin consumers and found substantial differences, suggesting that consumption occurs among broader demographic groups than previously described. Our findings suggest that efforts to reduce demand for pangolin consumption in Viet Nam should focus on a broader range of consumers than previously identified.

scholarly journals Correction: Facile synthesis of ultrathin Ni-MOF nanobelts for high-efficiency determination of glucose in human serum

2020 ◽  
Vol 8 (25) ◽  
pp. 5547-5548
Author(s):  
Xiao Xiao ◽  
Shasha Zheng ◽  
Xinran Li ◽  
Guangxun Zhang ◽  
Xiaotian Guo ◽  
...  
Keyword(s):  
Human Serum ◽  
High Efficiency ◽  
Facile Synthesis ◽  
Efficiency Determination

Correction for ‘Facile synthesis of ultrathin Ni-MOF nanobelts for high-efficiency determination of glucose in human serum’ by Xiao Xiao et al., J. Mater. Chem. B, 2017, 5, 5234–5239, DOI: 10.1039/C7TB00180K.

scholarly journals Isolation and characterization of pathogenic Escherichia coli bacteriophages from chicken and beef offal

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Celosia Lukman ◽  
Christopher Yonathan ◽  
Stella Magdalena ◽  
Diana Elizabeth Waturangi
Keyword(s):  
Escherichia Coli ◽  
Foodborne Pathogens ◽  
High Efficiency ◽  
Multiplicity Of Infection ◽  
Isolation And Characterization ◽  
Transmission Electron ◽  
Pathogenic Escherichia Coli ◽  
Family Based

Abstract Objective This study was conducted to isolate and characterize lytic bacteriophages for pathogenic Escherichia coli from chicken and beef offal, and analyze their capability as biocontrol for several foodborne pathogens. Methods done in this research are bacteriophage isolation, purification, titer determination, application, determination of host range and minimum multiplicity of infection (miMOI), and bacteriophage morphology. Results Six bacteriophages successfully isolated from chicken and beef offal using EPEC and EHEC as host strain. Bacteriophage titers observed between 109 and 1010 PFU mL−1. CS EPEC and BL EHEC bacteriophage showed high efficiency in reduction of EPEC or EHEC contamination in meat about 99.20% and 99.04%. The lowest miMOI was 0.01 showed by CS EPEC bacteriophage. CI EPEC and BL EPEC bacteriophage suspected as Myoviridae family based on its micrograph from Transmission Electron Microscopy (TEM). Refers to their activity, bacteriophages isolated in this study have a great potential to be used as biocontrol against several foodborne pathogens.

Research and Application of High-Efficiency Multi-Cyclone Dust Removal

2011 ◽  
Vol 109 ◽  
pp. 400-404
Author(s):  
Yan Hong Yang ◽  
Da Fu Ni
Keyword(s):  
Structural Design ◽  
High Efficiency ◽  
Dust Removal ◽  
Working Principle ◽  
Selection Of

Performance and working principle of high-efficiency multi-cyclone were analyzed, and the structural design shortage of original high-efficiency multi-cyclone was pointed out. Its structure was researched and designed, including determination of setting chamber and pipe number, selection of material and the design of cyclones.

scholarly journals Implementation of GINA guidelines in Ho Chi Minh City: a model for Viet Nam

2012 ◽  
Vol 2 (4) ◽  
pp. 181-185
Author(s):  
N. V. Tho ◽  
H. T. H. Loan ◽  
N. T. P. Thao ◽  
N. T. T. Dung ◽  
L. T. T. Lan
Keyword(s):  
Ho Chi Minh City ◽  
Viet Nam ◽  
Gina Guidelines

A Hybrid Highly Parallelizable Algorithm for the Dynamics of Rigid Body Chain Systems

1999 ◽  
Author(s):  
Shanzhong Duan ◽  
Kurt S. Anderson
Keyword(s):  
Rigid Body ◽  
Degrees Of Freedom ◽  
High Efficiency ◽  
Equations Of Motion ◽  
Constraint Forces ◽  
Dynamics Of Rigid Body ◽  
A Chain ◽  
Explicit Determination ◽  
Order Algorithm

Abstract The paper presents a new hybrid parallelizable low order algorithm for modeling the dynamic behavior of multi-rigid-body chain systems. The method is based on cutting certain system interbody joints so that largely independent multibody subchain systems are formed. These subchains interact with one another through associated unknown constraint forces f¯c at the cut joints. The increased parallelism is obtainable through cutting the joints and the explicit determination of associated constraint loads combined with a sequential O(n) procedure. In other words, sequential O(n) procedures are performed to form and solve equations of motion within subchains and parallel strategies are used to form and solve constraint equations between subchains in parallel. The algorithm can easily accommodate the available number of processors while maintaining high efficiency. An O[(n+m)Np+m(1+γ)Np+mγlog2Np](0<γ<1) performance will be achieved with Np processors for a chain system with n degrees of freedom and m constraints due to cutting of interbody joints.

Assessment of efficiency of distribution centre at different variants of freight traffic consolidation

2021 ◽  
pp. 22-27
Author(s):  
Elena Dmitrievna Pserovskaya ◽  
◽  
Anna Pavlovna Grefenshteyn ◽  
Keyword(s):  
Potential Benefit ◽  
High Efficiency ◽  
Positive Influence ◽  
Correct Selection ◽  
Freight Traffic ◽  
Distribution Centre ◽  
Selection Of

For the determination of a potential benefit from creation of a distribution centre the paper proposes a method and presents results of calculation of a decrease of total number of rides and total run of automobiles at various variants of goods consolidation. The authors have established a positive influence of the centre on intracity transportation. At the same time, high efficiency of the considered technology can be reached by involvement of a bigger number of consignees and by consolidation of a relatively small number of goods batches in one automobile at efficient routing and correct selection of location of a distribution centre.

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