Huong Ngo Thi Thuy - Academia.edu (original) (raw)

Papers by Huong Ngo Thi Thuy

Water Science and Technology, 2020

This mini review describes the current status and challenges regarding institutionalisation of wa... more This mini review describes the current status and challenges regarding institutionalisation of wastewater surveillance systems against COVID-19. Monitoring SARS-CoV-2 in wastewater has been proposed to be a potential tool to understand the actual prevalence of COVID-19 in the community, and it could be an effective approach to monitor the trend during the COVID-19 pandemic. However, challenges to institutionalise wastewater surveillance systems are still abundant and unfolding at a rapid rate given that the international understanding regarding the scientific knowledge and socio-political impacts of COVID-19 are in the developing stages. To better understand the existing challenges and bottlenecks, a comparative study between Japan, Viet Nam, and Indonesia was carried out in the present study. Through gaining a better understanding of common issues as well as issues specific to each country, we hope to contribute to building a robust multistakeholder system to monitor SARS-CoV-2 in ...

Toxics, Sep 8, 2022

Toxic metal pollution influences the lives of diverse aquatic organisms and humans who consume co... more Toxic metal pollution influences the lives of diverse aquatic organisms and humans who consume contaminated aquatic products. However, its potential impacts on aquatic organism health and, thus, ecological health, have been neglected in many regions. This research was carried out to contribute to filling that knowledge gap. Three freshwater fish species in the Nhue-Day River basin, Vietnam, have been chosen to study the bioaccumulation of metals (Zn, Cu, Pb, and Cd) in the tissues (livers, kidneys, gills) and their effects on fish physiological health (changes in the oxidative-GST activity, and physiological biomarkers-energy reserves, respectively) from 2013 to 2017. The extensive results revealed significant spatial and temporal variations in metal concentrations in tissues of common carp (Cyprinus carpio), silver carp (Hypothalmic molitrix), and tilapia (Oreochromis niloticus), and well correlated to their concentration in the water (p < 0.05). Fish bioaccumulated metals in the following order: Zn > Cu > Pb > Cd, with more in the kidneys and livers (spring and summer) than in other tissues. Metal accumulation in O. niloticus and C. carpio was higher than in H. molitrix. Biomarker responses (except for glycogen variation) were also higher during warm seasons. Changes in metal levels in water and fish tissues caused variations in biomarkers in the respective fish tissues, particularly in the livers, as demonstrated by significant correlations of metal concentrations in water and fish tissues to biochemical and physiological responses (p < 0.05). The findings suggest that metal pollution in the river basin adversely impacts the physiological health of both wild and cultured fish. Seasonal shifts in the levels of metal accumulation and biomarkers could be connected to species-specific differences in physiology and the levels of metals in environments. This biomarker set is simple but effective in assessing the impact of metal pollution on fish health and, hence, the aquatic ecosystem. This is one of the first biomonitoring studies to assist in designing better water management strategies for the Nhue-Day River basin.

Environmental Geochemistry and Health

This study assessed the potential health risks of ve elements (Ni, Cr, As, Cd, and Pb) in rice co... more This study assessed the potential health risks of ve elements (Ni, Cr, As, Cd, and Pb) in rice collected from three provinces in North-Central Vietnam, Thanh Hoa, Nghe An, and Ha Tinh. These provinces comprise areas with and/or without mining and industrial activities, focusing on two local population groups (adults and children under ve years old). Trace elements were determined by an inductively coupled plasma mass spectrometry (ICP-MS). The potential health risks were evaluated for different age groups using the estimated daily intakes (EDI), target hazard quotients (THQ), non-carcinogenic hazard quotients (HI), and target carcinogenic risks (TR). The highest element levels (mg kg −1 dry weight) were observed in Thanh Hoa for Cr (0.30 ± 0.106), As (0.13 ± 0.034) and for Pb (0.05 ± 0.015), and in Ha Tinh for Cd (0.06 ± 0.022). The highest estimated daily intakes (EDIs) of Cr (4.1 μg d −1), Ni (3.3 μg d −1), As (2.3 μg d −1), Cd (1.2 μg d −1), and Pb (0.32 μg d −1) were observed in several sites. The THQ of rice in three provinces showed a risk trend in the following order: Thanh Hoa > Ha Tinh > Nghe An. The HIs of trace elements revealed that As is a key component, with Cr and Cd as secondary risk factors in adults and children, with HIs being 1.5 times higher in girls under ve than in other groups. The TR of Ni was much greater than that of Pb, and it was higher in children than adults, with the maximum risk levels of Ni and Pb were 3.0 x 10-3 and 2.7 x 10-6 for baby girls under the age of ve in Ha Tinh and Thanh Hoa, respectively. The risk assessment of trace element dietary intake suggests that rice consumption poses signi cant health risks to the local population, both in non-carcinogenic and carcinogenic effects.

Parasite

With a long coastline stretching from tropical to subtropical climate zones, and an immense exclu... more With a long coastline stretching from tropical to subtropical climate zones, and an immense exclusive economic zone with over 4000 islands, the Vietnamese marine waters support a rich and biodiverse parasite fauna. Although the first parasitological record was in 1898, systematic studies of the parasite fauna have increased during the last 50 years. This comprehensive review covers the current state of knowledge of marine fish parasites in Vietnam and lists 498 species found in 225 fish species, and their geographical distribution. In addition, 251 marine parasite species have newly been added to the already known fauna of 247 species since 2006 (more than two-fold increase). The most speciose group was the Digenea, which accounted for 43% of the total parasite species biodiversity, followed by Monogenea (23.5%), Crustacea (11.6%), Nematoda, and Acanthocephala (8.0% each). The shallow and muddy Gulf of Tonkin showed a rich parasite fauna, accounting for 66.3% of the whole marine par...

International Journal of Environmental Research and Public Health

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Journal of Applied Ichthyology, 2017

The parasite fauna of Epinephelus coioides can be used as an indicator to assess different aquacu... more The parasite fauna of Epinephelus coioides can be used as an indicator to assess different aquaculture systems. A total of 133 E. coioides were collected from fishermen (wild fish) and marine fish farms (net cages, pond farms) in the Gulf of Tonkin (Ha Long, Cat Ba and Nghia Hung), Vietnam in 2013 and 2014, and examined for the presence of protozoan and metazoan parasites. Different patterns of parasite infections were found. The monogenean Pseudorhabdosynochus spp. was predominant in the net cage system; and the protozoans Trichodina spp. and Cryptocaryon irritans were found exclusively in pond and net cage cultivation sites in Nghia Hung and Cat Ba. These three species were assessed in addition to seven further indicator species and two dominance indices, to visualize the potential of assessing different aquaculture systems in Vietnam. This suggests the use of former shrimp ponds for grouper cultivation, reducing the pressure to further extend net cage cultivation in already highly influenced mariculture regions in Vietnam.

The National Public Accountant, Jun 1, 1997

Journal of Nanomaterials, 2021

This study proposed a sequential redox process to partially degrade tetrabromobisphenol A (TBBPA)... more This study proposed a sequential redox process to partially degrade tetrabromobisphenol A (TBBPA) within a reactor to a great extent. After 72 hours in an anoxic environment, 20 ppm of TBBPA could be effectively degraded by sulfurized zerovalent iron nanoparticles (S-nZVI) at concentrations of 2 g L-1 and 4 g L-1. Biphenol A (BPA) together with tri-, di-, and monobromobisphenol A was detected by high-performance liquid chromatography (HPLC) suggesting that TBBPA was debrominated by S-nZVI in a stepwise manner. Following the S-nZVI treatment, a persulfate-advanced oxidation process (PS-AOP) system with persulfate concentrations varied from 5 to 20 mM was incorporated to degrade the final debrominated byproduct, BPA, for 2 hours. The two-stage anoxic/oxic reactions at the same reactor with initial conditions (0.037 mM TBBPA, 4 g L-1 of S-nZVI, pH 6 in anoxic stage, 20 mM of PS in the latter oxic stage) were investigated. The sulfurized layer played an important role in such a system a...

Prosorhynchus tonkinensis n. sp. (Fig. 1 a) Type host. <... more Prosorhynchus tonkinensis n. sp. (Fig. 1 a) Type host. Epinephelus coioides (Hamilton, 1822). Site. Pyloric ceca, intestine. Type-locality. Nghia Hung, Nam Dinh, Vietnam (19°59'18.5"N, 106°10'44.7"E, September 2013). Etymology. The species name refers to the location in the Gulf of Tonkin. Description. Measurements and ratios based on 13 specimens are given in Table 1. Body pyriform, widest at two thirds of body, broadly rounded posteriorly, indented posterior extremity. Tegument spinous; spines squamous, tiny, reach to posterior extremity. Rhynchus large, muscular, conical, longer than wide. Mouth located at level of posterior testis or somewhat posterior to posterior testis, always inside posterior half of body. Pharynx spherical, in posterior half of body. Cecum tubular or oval sac like, extends anteriorly from pharynx. Testes 2, subspherical, close together, normally contiguous or slightly separated, slightly diagonal, dextral in about midbody. Cirrus-sac elongate, muscular, not thick-walled, more or less parallel sided, reaching or overlapping posterior testis. Seminal vesicle elongate-oval, dextral in proximal portion of cirrus-sac. Pars prostatica long, in two distinct parts; proximal part narrow, curved proximally to form convoluted seminal duct, joins seminal vesicle at postero-dorsal aspect; distal part wider, straighter, surrounded by dense layer of gland-cells, lining of filaments in chevron arrangement. Ejaculatory duct narrow, complex genital lobe inside genital atrium. Genital atrium large. Genital pore distinctly separated from posterior end. Ovary oval, anterior and/or overlapping anterior part of anterior testis. Uterus reaches anteriorly into vitelline region, extends posteriorly to genital pore. Eggs tanned, numerous. Vitellarium consists of two lateral fields of 12– 16 follicles, usually symmetrical, long vitelline field is dextral, anterior extremity closer to posterior margin of rhynchus than cecum, ovary or uterus; posterior extremity at abo [...]

Prosorhynchus luzonicus Velasquez, 1959 (Fig. 1.e) Site. Py... more Prosorhynchus luzonicus Velasquez, 1959 (Fig. 1.e) Site. Pyloric ceca, intestine. Locality. Ha Long (20°57'14"N, 107°18'23"E, July and August, 2013), Cat Ba (20°46'30"N, 107°04'38"E, August, 2013, July, 2014), Nghia Hung (19°59'18.5"N, 106°10'44.7"E, October, 2013, August, 2014), and Tinh Gia (19°24'31"N, 105°45'55"E, September, 2013). Description. Measurement data based on 20 specimens (Table 5). Body fusiform or elongate, widest at about mid of body, blunt at anterior end, tapering to rounded or pointed posterior end. Tegument spinous; spines squamous, tiny, reach to posterior extremity. Rhynchus large, muscular, conical, longer than wide. Mouth at level of ovary and/or anterior testis, always inside anterior half of body. Pharynx spherical, muscular, in anterior half of body. Cecum tubular or oval sac like, extends to anteriorly from pharynx. Testes 2, subspherical, tandem, sometimes contiguous, slightly overlapping, dextral in about midbody. Cirrussac elongate, muscular, not thick-walled, more or less parallel-sided, normally reaching posterior testis, may reach to ceca or not reach to posterior testis. Seminal vesicle elongate-oval, dextral in proximal portion of cirrus-sac. Pars-prostatica long, in two distinct parts; proximal part narrow, curved proximally to form convoluted seminal duct, joins posterior-dorsal aspect of seminal vesicle; distal part wider, straighter, surrounded by dense layer of gland-cells, lining of filaments in chevron arrangement. Ejaculatory duct narrow, complex genital lobe inside genital atrium. Genital atrium large. Genital pore distinctly separated from posterior end. Ovary oval, anterior to or overlapping anterior part of anterior testis. Uterus reaches anteriorly beyond ovarian region, almost to anterior extent of cecum (reaches in 1 of 45 specimens), and extends posteriorly to genital pore. Eggs tanned, numerous. Vitellarium with 25–28 follicles (13–15 follicles on long field and 11–13 on short field), consists of two lateral fields, usually symmetr [...]

Prosorhynchus sp. B (VN) (Fig. 1.d) Site. Intestine. <b&... more Prosorhynchus sp. B (VN) (Fig. 1.d) Site. Intestine. Locality. Cat Ba, Hai Phong, Vietnam (20°46'30"N, 107°04'38"E, August 2014). Description. Based on one specimen (Table 1). Body elongate, widest at vitelline region. Tegument spinous; spines squamous, tiny, reach to posterior extremity. Rhynchus conical, muscular, longer than wide, blunt at posterior end. Mouth near mid body, just anterior to posterior testis, inside anterior half of body. Pharynx globular, anterior-dextral to posterior testis. Cecum oval, sac-like, extends anteriorly from pharynx. Testes 2, sub-spherical, oblique, anterior testis sinistral to ovary. Cirrus–sac elongate, not thick walled, not reaching to posterior testis, located in posterior half of body. Seminal vesicle tubular, extending about half-length of cirrus-sac. Pars-prostatica relatively narrow, with dorsal-ventral loop near middle of cirrus-sac. Ejaculatory duct narrow, complex genital lobe inside genital atrium. Genital atrium large. Genital pore distinctly separated from posterior end. Ovary oval, dextral to anterior testis. Uterus reaches anteriorly as far as anterior testis, extending posteriorly to posterior margin of cirrus-sac. Eggs tanned, numerous. Vitellarium forming an arch of 24 follicles, beginning at posterior testis level and covering cecum and gonads. Excretory pore terminal. Excretory vesicle not seen. Remarks. As only a single specimen with clear features could be observed, which differs from all other known species, we herewith record it as Prosorhynchus sp. B (VN) due to the lack of further material. The comparison diagram visual key of Prosorhynchus sp. B (VN) (Fig. 4) demonstrates that Prosorhynchus sp. B (VN) does not differ from P. lafii, P. maternus and P. pacificus in the visual key. However, it still can be distinguished by its arched vitellarium. In P. lafii from the Brown-marbled Grouper Epinephelus fuscoguttatus (Forsskål) off Queensla [...]

Prohlašuji, ţe jsem celou bakalářskou práci včetně příloh vypracoval samostatně pod vedením vedou... more Prohlašuji, ţe jsem celou bakalářskou práci včetně příloh vypracoval samostatně pod vedením vedoucího bakalářské práce a uvedl jsem všechny pouţité podklady a literaturu.

ChemSusChem, 2020

It has not been through the copyediting, typesetting, pagination and proofreading process, which ... more It has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record.

Chemical Engineering Communications, 2018

The performance of catalytic tri-reforming under industrially relevant situations (e.g., pellet c... more The performance of catalytic tri-reforming under industrially relevant situations (e.g., pellet catalysts, pressurized reactor) was investigated using surrogate biogas as the feedstock. Tri-reforming using Ni/Mg/Ce 0.6 Zr 0.4 O 2 /Al 2 O 3 pellet catalysts was studied in a bench scale fixed-bed reactor. The feed molar ratio for CH 4 :CO 2 :air was fixed as 1.0:0.70:0.95. The effects of temperature (800-860°C), pressure (1-6 bar), and H 2 O/CH 4 molar feed ratio (0.23-0.65) were examined. Pressure has substantial impact on the reaction and transport rates and equilibrium conversions, making it a key variable. At 860°C, CO 2 conversion increased from 4 to 61% and H 2 /CO molar ratio decreased from 2.0 to 1.1 as the pressure changed from 1 to 6 bar. CO 2 conversion and H 2 /CO molar ratio were also influenced by the temperature and H 2 O/CH 4 molar ratio. At 3 bar, CO 2 conversion varied between 4 and 43% and the H 2 /CO molar ratio varied between 1.2 and 1.9 as the temperature changed from 800 to 860°C. At 3 bar and 860°C, CO 2 conversion decreased from 35 to 8% and H 2 /CO molar ratio increased from 1.7 to 2.4 when the H 2 O/CH 4 molar ratio was increased from 0.23 to 0.65. This work demonstrates that the tri-reforming technology is feasible for converting biogas under scaled-up conditions in a fixed-bed reactor. KEYWORDS Biofuels; biogas; catalyst pellet; packed beds; synthetic fuel; tri-reforming Additionally, CH 4 partial oxidation is exothermic, which lowers the required heat duty of the syngas production (García-Vargas et al., 2013). While there are many advantages of tri-reforming (Song and Pan, 2004), the authors are not aware of any commercial process based on tri-reforming even none defined

Molecular Genetics & Genomic Medicine, 2019

This is an open access article under the terms of the Creative Commons Attribution License, which... more This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, providedthe original work is properly cited.

Zootaxa, Jan 22, 2016

A total of 169 specimens of the orange-spotted grouper Epinephelus coioides (Hamilton) were colle... more A total of 169 specimens of the orange-spotted grouper Epinephelus coioides (Hamilton) were collected from fishermen and marine fish farms in the Gulf of Tonkin, Vietnam. Five different species of Prosorhynchus Odhner, 1905 were recorded, including P. tonkinensis n. sp. The new species differs from all other Prosorhynchus species in the presence of an indented posterior extremity. It can be distinguished from the most closely related P. atlanticus Manter, 1940 and P. crucibulum Rudolphi, 1819 by the extension of the uterus always to the level of the ovary, the width and premouth distance in the former, and the arched vitellarium and smaller egg size in the latter, and a different host and geographical region. Prosorhynchus sp. A (not fully identified in this study) has been earlier reported from E. coioides from New Caledonia (see Prosorhynchus sp. B of Bray and Justine, 2013), P. luzonicus Velasquez, 1959 is reported throughout South-East Asia, and Prosorhynchus sp. B (no further i...

Scientific reports, Aug 23, 2016

The life cycle of hepatitis C virus (HCV) is tightly coupled to the lipid metabolism of host cell... more The life cycle of hepatitis C virus (HCV) is tightly coupled to the lipid metabolism of host cells. In order to identify host factors involved in HCV propagation, we have previously screened a small interfering RNA (siRNA) library targeting host genes that control lipid metabolism and lipid droplet (LD) formation using cell culture-grown HCV (HCVcc)-infected cells. In this study, we selected and characterized the gene encoding ADP-ribosylation factor-related protein 1 (ARFRP1). ARFRP1 is essential for LD growth and is involved in the regulation of lipolysis. siRNA-mediated knockdown of ARFRP1 significantly inhibited HCV replication in both subgenomic replicon cells and HCVcc-infected cells. ARFRP1 interacted with NS5A and NS5A partially colocalized with LD. Silencing of ARFRP1 abrogated HCV-induced LD growth and viral protein expressions. Moreover, ARFRP1 recruited synaptosomal-associated protein 23 (SNAP23) to sites in close proximity to LDs in HCV-infected cells. Silencing of ARFR...

Since Fujishima and Honda first demonstrated photocatalytic water splitting in 1972[1], numerous ... more Since Fujishima and Honda first demonstrated photocatalytic water splitting in 1972[1], numerous investigators have extended the idea into many other semiconductors and photoreactions. Utilizing solar energy to facilitate photocatalytic conversion of carbon dioxide (CO2) with water (H2O) to fuels and chemicals such as CO, CH4, CH3OH holds great potential as a sustainable alternative energy source and as a promising method to reduce pollution and global warming. In spite of the large number of studies and materials investigated for photocatalytic CO2 conversion, efficiencies achieved to date have been very small and much work remains to be done to overcome the limitations. Metal-organic frame works (MOFs) are perhaps uniquely suited to address CO2 capture and photocatalytic conversion because of their exceptional porosities, tunable pore sizes and chemical structure. The principle of reducing CO2 in a MOF using UV radiation has recently been demonstrated by doping a photocatalyst moi...