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Van Thuan Le,Hoang Sinh Le,Vy Anh Tran,이상화,Van-Dat Doan,주상우,Yasser Vasseghian 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
The present study offers a novel recyclable Fe3O4/MnO2/ZIF-8 heterojunction photocatalyst for the degradationof reactive blue 19 (RB19) under visible light irradiation. The catalyst was facilely synthesized bydepositing Fe3O4/MnO2 nanocomposite onto the surface of ZIF-8 and characterized by field-emissionscanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy,X-ray diffraction, nitrogen adsorption–desorption isotherms and UV–vis spectroscopy. Morphology and structure characterization of the prepared photocatalyst indicated that polyhedralZIF-8 (ca. 500 nm) was coated by MnO2/Fe3O4 nanorods. The synergy effect of Fe3O4/MnO2/ZIF-8 compositeexhibited an excellent photocatalytic activity toward RB19 degradation of 99.5 % after 60 min of irradiationdue to high surface area and heterojunction formation. According to scavenger tests, thephotodegradation of RB19 dye over Fe3O4/MnO2/ZIF-8 was mainly contributed by OH and O2reactiveradicals. The kinetic study showed that the catalytic degradation of RB19 on Fe3O4/MnO2/ZIF-8 was betterdescribed by the first-order kinetic model. The new catalyst was easily recovered using an external magneticfield because of its magnetic properties. Besides, Fe3O4/MnO2/ZIF-8 showed high recyclability andstability, maintaining a high removal efficiency of 91.3 % even after ten repeated cycles. The overallresults indicated that the fabricated composite can be used as an efficient photocatalyst for treatingorganic dyes in wastewater.
Vo Minh Hoang Do,Long Giang Bach,Diem-Huong Nguyen Tran,Van Du Cao,Thi Nhu Quynh Nguyen,Duc Thuan Hoang,Van Cuong Ngo,Dai Hai Nguyen,Thai Thanh Hoang Thi 한국생물공학회 2020 Biotechnology and Bioprocess Engineering Vol.25 No.2
Polyamidoamine (PAMAM) dendrimer is emerging as an effective nanocarrier for delivering anticancer drugs. Still, unmodified PAMAM dendrimer is hardly used in vivo because of unsatisfied drug release, high tendency of interfering with cellular membranes, and rapid clearance by reticuloendothelial system. In this study, low generation polyamidoamine (PAMAM) dendrimer G3.0 is developed and surface modified with methoxypolyethylene glycol (PAMAM G3.0-mPEG) to overcome its limitations. Specifically, PAMAM G3.0 conjugated with mPEG at different ratios are investigated to effectively eliminate its charge-associated toxicity, in which PAMAM G3.0-mPEG- 8 is chosen for oxaliplatin (OX) loading. Results reveal that OX-loaded PAMAM G3.0-mPEG-8 has desirable size, good entrapment efficiency, and sustained release with minimum drug leakage. In addition, Resazurin assay indicates that the toxicity of loaded OX is reduced as compared to free drug but still maintain substantially anticancer activity on HeLa cells, suggesting the potential application of PAMAM G3.0-mPEG-8 for OX delivery in cancer therapy.
Hoang Thi Le,나민균,Do Thi Ha,Chau Thi Anh Minh,Tae Hoon Kim,Phan Van Kiem,Nguyen Duy Thuan 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.1
Phytochemical investigation of the stem barks of Canarium bengalense (Burseraceace) resulted in the isolation of a new flavone glycoside (5) together with six known compounds (1-4, 6, and 7). The chemical structure of the new compound was elucidated as 3'-hydroxy-7,4'-dimethoxyflavone-5-O-α-L-arabinofuranosyl-(1→6)-β-D-glucopyranoside by means of 1D and 2D NMR (1H-1H COSY, HMQC, and HMBC) and MS analyses. To evaluate the in vitro cytoprotective effect, the isolates (1-7) were tested against hydrogen peroxide (H2O2)-induced damage in primary cultured hepatocytes. The viability of hepatocytes was increased by treatment with each compound, except compound 1. Compounds 3, 4, and 7 exerted cytoprotective effects comparable to curcumin, the positive control. Our results suggest that the cytoprotective constituents of C. bengalense may contribute to its traditional use in the treatment of tumor and liver damage.
An Analysis of the Meaning Enshrined in the Architecture of the Tay Ninh Holy See of Cao Dai
NGUYEN, Phuoc Tai,DINH, Van Thuy,NGUYEN, Thuan Quy,TRAN THI, Kim Hoang DAOS(The Daesoon Academy of Sciences) 2022 Journal of Daesoon Thought and the Religions of Ea Vol.2 No.1
In the 1920s, a new religion emerged in Tay Ninh Province, Southern Vietnam, under the name Caodaism; also known as the Third Universal Salvation of the Great Dao. It is the result of the typical combination of three main religions (Buddhism, Daoism, and Confucianism). Different ethnic groups populated Tay Ninh, such as Chinese, Khmer, Cham, and Kinh. Additionally, the core principle of Caodaism is known as The Three Religions Returned to the Origin, and it is also expanded as The Five Branches Reunited. The Five Branches are humankind's five ways of self-cultivation: the Way of Humans, the Way of Deities, the Way of Saints, the Way of Immortals, and the Way of Buddhas. Although Caodaism was only founded in 1920, this religion is well known domestically and internationally. This is because Caodaism has a distinctive identity; it is a new religion that advocates a syncretistic combination of essential religious teachings that follow the harmonization and reconciliation between the East and West as well as between the past and present. Moreover, the Tay Ninh Holy See is the most important, first, and largest Cao Dai temple in Vietnam. The temple is located in Tay Ninh Province in southwestern Vietnam. This article aims to introduce the Tay Ninh Holy See as the birthplace of Caodaism and as the largest Cao Dai religious palace, not only in Vietnam but also in other countries that practice Caodaism. A brief overview of Tay Ninh Holy See's origin, history, and planning will be provided. Most importantly, the style of the architecture at the Tay Ninh Holy See will be comprehensively analyzed to shed more light on the meaning of each section and the details of this temple structure.
Thuong Nhan Phu Nguyen,Chi Khang Van,Thu Trang Thi Nguyen,Thuan Van Tran,Quang Binh Hoang,Long Giang Bach 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.13
This study aimed to evaluate the encapsulation of pomelo (Citrus grandis (L.) Osbeck) essential oils using the spray drying technique. The parameters of the process include concentration of maltodextrin (20–35% by wt%/wt%), concentration of essential oil (1–2.5% by wt%/wt%), inlet temperature of spray drying (120–180 °C), and feed flow rates (120–240 mL/h) were soundly examined. The utilization of suitable parameters as the concentration of maltodextrin at 30% (by wt%/wt%), the concentration of essential oil at 1.5% (by wt%/wt%), the inlet temperature of 140 °C, and feed flow rate of 120 mL/h showed the highest drying yields (90.05%), microencapsulation yield (75.59%), and microencapsulation efficiency (89.44%). TGA and DSC results verified higher stability of Citrus grandis essential oil after encapsulation. The encapsulation of pomelo essential oils maintained most of the major components in comparison with the non-encapsulated essential oils without any significant changing in powder-obtained quality.
Tran Thi Kieu Ngan,Le Van Thuan,Nguyen Tien Hoang,Doan Van Dat,Vasseghian Yasser,Le Hoang Sinh 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.7
The present study provides an eco-friendly and economical way to recycle discarded cigarette butts (CBs). The raw CBs were treated with NaOH (CB-B) and integrated with chitosan (Cs), and further applied as an adsorbent for the removal of synthetic dyes. Two common cationic dyes of methylene blue (MB) and crystal violet (CV) and one anionic dye of reactive blue 19 (RB 19) were selected as model adsorbates. The study results revealed that CB-B showed a high adsorption ability toward cationic dyes, while the CB-B/Cs composite exhibited a stronger affinity for the anionic RB 19. The adsorption of all selected dyes onto CB-B and CB-B/Cs was a spontaneous exothermic process, conforming to the pseudo-first-order kinetic and Langmuir isotherm models. The maximum adsorption capacities for MB, CV and RB 19 at pH of 7, an adsorbent dosage of 4, and a temperature of 25 °C were 89.85, 82.41, and 304.49 mg/g, respectively. The primary adsorption mechanism was physical adsorption with the participation of electrostatic attraction. The CB-based adsorbents displayed high reusability, maintaining more than 75% after four consecutive cycles of reuse. This study demonstrates the promising application potential of CB-based adsorbents for treating synthetic dyes in wastewater. The conversion of CBs into a useful high-value material has special significance for environmental engineering.
Truong Xuan NGUYEN,Khai Quang LUU,Thien Thuan Hoang NGUYEN,An Van HA,Han Bao Huynh NGUYEN,Anh Nhu Thi BUI 한국유통과학회 2018 KODISA ICBE (International Conference on Business Vol.2018 No.-
This study to explore and examines the factors affecting 4.0 industrial adoption in enterprises in Ho Chi Minh City. The research model based on the two main research theories is the Technology Adaptation Model (Davis, 1989) and the Theory of Planned Behavior (Ajzen, 1991), and previous literature on technology 4.0 to build conceptual models which appropriate to the research content. Both qualitative and quantitative research methods are applied in the study. Qualitative research is conducted first in the form of in-depth interviews to adjust the conceptual model. Quantitative research was then used to verify the conceptual model. Samples taken by the non-probability method and convenience sampling technical through the official questionnaire for 380 small and medium enterprises have been applying elements of industry 4.0. The results show that in addition to the effect of Intent to Use on Use decision, in the group of independent variables affecting Perceived Usefulness of the business, turning Perceived Saving Cost has the strongest impact, and in the group of independent variables which influence Intent to Use, the Business Resource variable has the strongest impact.
Triterpenoids from aerial parts of Glochidion eriocarpum.
Thu, Vu Kim,Kiem, Phan Van,Yen, Pham Hai,Nhiem, Nguyen Xuan,Tung, Nguyen Huu,Cuong, Nguyen Xuan,Minh, Chau Van,Huong, Hoang Thanh,Lau, Trinh Van,Thuan, Ngo Thi,Kim, Young Ho Natural Product Communications 2010 Natural product communications Vol.5 No.3
<P>From the aerial parts of Glochidion eriocarpum, a new triterpene, glochieriol (1), three new triterpenoid saponins, glochieriosides C - E (2 - 4), together with four known triterpenes (glochidonol, glochidiol, lupeol, and 3-epi-lupeol) were isolated by using combined chromatographic separations. The structures of the new compounds were elucidated on the basis of spectroscopic data, including FTICR-MS, 1D and 2D NMR.</P>
Subacute thyroiditis after receiving the vaccine for COVID-19: a case report and literature review
Thanh Binh Vu,Dinh Toi Chu,Dinh Tuan Le,Thi Thuy Dieu Hoang,Philippe Gautret,Van Thuan Hoang 대한백신학회 2022 Clinical and Experimental Vaccine Research Vol.11 No.2
A 38-year-old female patient, with healthy history, was vaccinated with ChAdOx1 nCoV-19 (Astra Zeneca Cambridge, UK). Five days after the second injection, the patient presented headache, vertigo, then fatigue, nervousness, palpitations, shortness of breath, small amplitude tremors, and sweating episodes. Laboratory investigation revealed a suppressed thyroid-stimulating hormone (TSH), with elevated free thyroxine. However, the TSH receptor antibody and anti-thyroid peroxidase antibody were normal and thyroid-stimulating immunoglobulin negative. The patient was maintained on Metoprolol, and no specific treatment was added. After 3 months of following, the patient now feels comfortable. Our literature review found that 21 cases of subacute thyroiditis (SAT) following coronavirus disease 2019 (COVID-19) vaccines were reported. Most patients were young women who presented neck pain and systemic symptoms, with or without fever. These symptoms can appear as early (3 to 5 days), or later (1 month) after vaccination, regardless of vaccine type and mechanism of action. Laboratory tests showed decreased levels of TSH and elevated thyroid hormone. The mechanism of this event remains unknown. Further study is recommended to investigate the possible predisposing factors to developing SAT after receiving the COVID-19 vaccine.