236 research outputs found
FIELD TEST ON CLEANING OF OIL POLLUTION ON NHATRANG BEACH OF VIETNAM
Joint Research on Environmental Science and Technology for the Eart
The Propagation of the Electromagnetic Wave in Multilayers Structures Composed from Cholesteric Liquid Crystals under the Influence of the External Electric Field
The tensor solution for the electromagnetic wave being in quadrature with the surface of the cholesteric liquid crystal under the influence of the external electric field along axis of swing of crystal, has been found. Description of the reflection, transmission of the electromagnetic wave in multilayer structures composed from cholesteric liquid crystals have been shown. Futher the dependence of the reflection spectrum on the polarization of the incident beam and magnitude of the external electric field are determined
Self-injurious Behavior of Children with Autism in Vietnam: Across Sectional Study
This study explored self-injurious behaviour (SIB) of autistic children in Vietnam through a crosssectional
design. 60 informants, including 57 parents and 3 caregivers completed the questionnaire on
problem behaviour consisting of aggression, self-injury, stereotyping, property destruction, other
problem behaviours and their functions. Results revealed that children experienced all mentioned
problem behaviours, especially self-injurious behaviour. The topographies of self-injurious behaviour
of the children included head-hitting, head-scratching, head-banging, hair-pulling, face-hitting, facepuncturing
with a pen, ear-scratching, lip-picking, hand-biting, hand-scratching, hand-pinching, and
belly-scratching. The most common area of self-injurious behaviour is the head. The functions of these
problem behaviours were expressed in four types (social positive reinforcement, social negative
reinforcement, automatic positive reinforcement and automatic negative reinforcement). Social
positive reinforcement appeared as a prominent function. Out of these 57 children, 21 of them who
were autistic with self-injurious behaviour went through a functional behaviour assessment (FBA) in
which the four conditions known as attention, tangible items, escape from task/activities, automatic
stimulation were tested. The results of functional behaviour assessment (FBA) further indicated the
correspondence between the FAST-R and FBA outcome on function of problem behaviour, especially
self-injurious behaviour. The research concluded that the prominent function of these self-injurious
behaviours was social function. It means self-injurious behaviours usually occur within a condition of
social interaction, especially, in this present study, in the tangible condition. The antecedent of selfinjurious
behaviour is the removal of tangibles (e.g. food, preferred items). This paper contributes to
our knowledge of self-injurious behaviour of children with autism in Vietnam where empirical
research of this field was still very rare
Microbial diversity in trace water of jet fuel in Vietnam
Joint Research on Environmental Science and Technology for the Eart
The proliferation and differentiation of pre-osteoblastic MC3T3-E1 cells from Vietnamese drug formulations
A public heath problem, osteoporosis, is recognized as the prevalent disease, and mainly causes for impairment and loss mass of bone. It closely related the balance between bone formation by osteoblasts and resorption by osteoclasts during the remodeling cycle of bone. Hence, pharmaceutical therapies are looking for the potential agents to stimulate osteoblastic bone formation, as well as inhibit osteoclastic processes
Density estimates for the exponential functionals of fractional Brownian motion
In this note, we investigate the density of the exponential functional of the fractional Brownian motion. Based on the techniques of Malliavin’s calculus, we provide a log-normal upper bound for the density
Density estimates for the exponential functionals of fractional Brownian motion
In this note, we investigate the density of the exponential functional of the fractional Brownian motion. Based on the techniques of Malliavin’s calculus, we provide a log-normal upper bound for the density
Soybean yield, seed quality and thresh efficiency by mechanisation at different harvesting stages and postharvest ripening
This study determined the most appropriate and earliest soybean harvesting stage and the number of days of postharvest ripening with minimal effects on seed losses and quality when mechanical harvest and threshing were applied. Harvesting stages at four physiological maturities (60, 70, 80, and 90%) and various days of postharvest ripening treatment (1, 2, and 3 days) were applied for two soybean varieties DT12 and DT26. Harvesting at physiological maturity of 90% recorded the highest seed-shattering loss but the least seed damage (<5%) and highest seed quality, followed by a physiological maturity of 80%. There were no significant differences in seed yields between harvesting stages of 80 and 90% maturity. Harvesting soybeans at a physiological maturity of 60 and 70% resulted in no seed losses but a significant reduction in seed quality. To avoid adverse weather, an early harvest stage at a physiological maturity of 80% is suggested. Although postharvest ripening of soybeans for early harvest caused seed shattering losses (2-5%), it was necessary to ensure seed quality. These results indicate effective and practical methods for farmers at small households to use in early mechanical harvesting of soybeans
DISTRIBUTION OF USEFUL AND HARMFUL MICROORGANISMS IN SHRIMP AQUACULTURE WATER IN TIEN HAI COASTAL OF THAI BINH PROVINCE
Joint Research on Environmental Science and Technology for the Eart
IDENTIFICATION OF SOME PREDOMINANT BACTERIA ISOLATED FROM JETA1 FUEL IN VIETNAM BY SEQUENCE ANALYSIS OF 16S RRNA GENE
Joint Research on Environmental Science and Technology for the Eart
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