Facile synthesis of ZnBi2O4-graphite composites as highly active visible-light photocatalyst for the mineralization of rhodamine B

Nguyen Thi Mai Tho,Bui The Huy,Dang Nguyen Nha Khanh,Ho Nguyen Nhat Ha,Vu Quang Huy,Ngo Thi Tuong Vy,Do Manh Huy,Duong Phuoc Dat,Nguyen Thi Kim Phuong 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.12

Novel highly active visible-light photocatalysts in the form of zinc bismuth oxide (ZnBi2O4) and graphite hybrid composites were prepared by coupling via a co-precipitation method followed by calcination at 450 oC. The asprepared ZnBi2O4-graphite hybrid composites were tested for the degradation of rhodamine B (RhB) solutions under visible-light irradiation. The existence of strong electronic coupling between the two components within the ZnBi2O4- graphite heterostructure suppressed the photogenerated recombination of electrons and holes to a remarkable extent. The prepared composite exhibited excellent photocatalytic activity, leading to more than 93% of RhB degradation at an initial concentration of 50mg·L1 with 1.0 g catalyst per liter in 150min. The excellent visible-light photocatalytic mineralization of ZnBi2O4-1.0graphite in comparison with pristine ZnBi2O4 could be attributed to synergetic effects, charge transfer between ZnBi2O4 and graphite, and the separation efficiency of the photogenerated electrons and holes. The photo-induced h+ and the superoxide anion were the major active species responsible for the photodegradation process. The results demonstrate the feasibility of ZnBi2O4-1.0graphite as a potential heterogeneous photocatalyst for environmental remediation.

A Novel Transcriptomic Biosignature for Tuberculosis Diagnosis, Treatment Monitoring and Outcome Prediction

( Nguyen Phuoc Long ),( Nguyen Ky Phat ),( Nguyen Thi Hai Yen ),( Seongoh Park ),( Yumi Park ),( Yong-soon Cho ),( Jae-gook Shin ) 대한결핵 및 호흡기학회 2021 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.129 No.-

Background Transcriptomic biomarkers have been demonstrated as a promising tool for accurate diagnosis and differential diagnosis of tuberculosis (TB). However, little is known about their potential in TB treatment monitoring and outcome prediction. Methods We carried out a comprehensive search for available transcriptomics data. The data was used for the discovery of genes that show significant responses during the treatment of TB. Genes with consistent downtrend alterations were determined. Potential candidates were then subjected to external validation. The potential of the biomarker candidates in TB diagnosis and active TB progression risk evaluation was also evaluated. Results The transcriptome of the TB patients was significantly changed during the treatment. There were 371 significantly expressed genes with the monotonic downtrend alteration in the time series comparison. Among these genes, 10 genes were found to be associated with the TB treatment outcome. The 10-gene signature reflected well the downtrend kinetics of TB patients during the course of treatment. It had potential in predicting cured TB patients, when employed as covariates in a logistic regression model. In addition, biomarker candidates clearly differentiated TB patients from non-TB patients and people with latent infection. Conclusions The 10-gene biosignature had potential in TB diagnosis, treatment monitoring, and outcome prediction.

Giant Parallel and Perpendicular Exchange Biases in MnPd/Co Bilayers

Nguyen Thanh Nam,Nguyen Phu Thuy,Nguyen Anh Tuan,Nguyen Nguyen Phuoc,Takao Suzuki 한국자기학회 2007 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

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.

긴꼬리 분포의 광간섭 단층촬영 데이터세트에 대한 다중 레이블 이미지 분류

( Phuoc-nguyen Bui ),정경희 ( Kyunghee Jung ),( Duc-tai Le ),추현승 ( Hyunseung Choo ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.2

In recent years, retinal disorders have become a serious health concern. Retinal disorders develop slowly and without obvious signs. To avoid vision deterioration, early detection and treatment are critical. Optical coherence tomography (OCT) is a non-invasive and non-contact medical imaging technique used to acquire informative and high-resolution image of retinal area and underlying layers. Disease signs are difficult to detect because OCT images have many areas which are not related to any disease. In this paper, we present a deep learning-based method to perform multi-label classification on a long-tailed OCT dataset. Our method first extracts the region of interest and then performs the classification task. We achieve 98% accuracy, 92% sensitivity, and 99% specificity on our private OCT dataset. Using the heatmap generated from trained convolutional neural network, our method is more robust and explainable than previous approaches because it focuses on areas that contain disease signs.

Global ginseng research

Nguyen, Phuoc Long,Nguyen, Hoang Anh,Park, Jeong Hill The Korean Society of Ginseng 2020 인삼문화 Vol.2 No.-

지금까지 Web of Science의 core collection에 나타난 인삼 관련 연구논문의 수를 분석하였다. 인삼논문이 처음 나타난 1905년부터 2019년까지 전세계에서 총 8,090편의 SCI(E) 논문이 출판된 것으로 나타났다. 그중 최근 24년, 즉, 1996년부터 2019년까지의 논문이 7,385편이었다. 1980년 18편에 불과했던 인삼 논문이 1990년에는 53편, 2000년에는 97편, 2010년에는 369편, 2019년에는 678편으로 비약적으로 증가하였다. Web of Science의 core collection에 수재된 전체 학술논문에서 인삼 논문이 차지하는 비중도 1970년 0.0008%, 1980년 0.0044%, 1990년 0.101%, 2000년 0.0141%에서 2019년에는 0.0422%로 비약적으로 증가하였다. 지난 24년간 출판된 인삼 연구논문 중 원보(노트 포함)는 7,099편, 리뷰는 286편이었다. 총 78개국 3,286개 기관에서 연구가 이루어졌으며, 1,274개 학술잡지에 논문이 수재되었다. 전체 논문 중 중국에서 연구된 논문이 40.3%로 가장 높았고, 대한민국에서 연구된 논문이 34.7%로 한국과 중국의 연구가 전체의 75%를 차지하였다. 그 다음은 미국(6.0%), 일본(4.1%), 캐나다(2.9%) 순이었다. 2013년까지는 한국에서 연구된 논문이 가장 많았으나 2014년부터 중국에서 연구된 논문의 수가 더 많아졌다. 지난 24년간 인삼은 전세계에서 가장 많이 연구된 약용식물로 인삼 다음으로는 차(6,499편), 마늘(3,641편), 은행(2,590편), 생강(1,945편) 순이었다. We conducted a comprehensive analysis of research papers on ginseng to provide an overview of global ginseng research. The qualitative and quantitative interpretation was carried out using collected data of Panax species and six other herbal plants from the Web of Science^TM Core Collection. We summarized and classified them by country/territory and institutions based on the corresponding author's institution. The first ginseng paper appeared in 1905 and since then, 8,090 papers have been published until 2019. Among them 7,385 papers were published in recent 24 years from 1996 to 2019. It was 18 papers in 1980, 53 in 1990, 97 in 2000, 369 in 2010, and increased to 678 in 2019. Proportion of ginseng papers in total number of scientific papers were also greatly increased, namely, 0.0008% in 1970, 0.0044% in 1980, 0.101% in 1990, 0.0141% in 2000, and 0.0422% in 2019. 7,099 original research papers including notes and 286 review papers were published during last 24 years. Total 3,286 institutions in 78 countries and 1,274 journals contributed to the publication of ginseng papers. Korea was the leading country in ginseng papers up to 2013, however, China took over the top from 2014. Chinese institutions contributed 40.3% of total papers followed by Korea (34.7%), USA (6.0%), Japan (4.1%), and Canada (2.9%). Ginseng was the most studied medicinal plant during last 24 years followed by tea, garlic, ginkgo, and ginger whose number of papers were 6,499, 3,641, 2,590, and 1,945, respectively.

A Study of Oil Absorbing Capacity of Cellulose-implemented Polyurethane for the Recovery of Oil Spills

Phuoc Quy Phong Nguyen,A.T. Hoang,Abdel Rahman M. S Al-Tawaha 국제이네비해양경제학회 2018 International Journal of e-Navigation and Maritime Vol.9 No.1

Recently, Oil spill incidents from maritime activities and port operation have been causing the serious ocean environment pollution, these problems are said to be the negative effects on the natural environment, social economy, marine species, and human health. Due to the high costs of treating oil spills and oil slick in comparison with a low-income country like Vietnam, many incidents related to the oil spill and oil slick have not been thoroughly processed. Cellulose components from Vietnamese agricultural residues used to produce the absorbent materials are one of the most urgent issues and this is the research object of this work. In this study, two types of structural lengths of cellulose added into PU matrix foam are used to measure how much crude oil, fuel oil, diesel oil and kerosene can be absorbed. The absorbent materials are designed after adding cellulose with 5%, 15%, 25% of mass, respectively. The achieved results show that the oil absorption capacity of PU-cellulose implemented 5% cellulose with 500μm of cellulose structure length and 25% cellulose with 3000μm of cellulose structure length are highest for crude oil. These study results from this work provide a reasonable price for the protection of the marine environment in the strategies of recovery and treatment of oil spill and oil slick on the seawater surface.

浅谈汉语, 汉字在越南的传播--- 历史回顾

Nguyen Phuoc Loc 단국대학교 한문교육연구소 2019 International Han-character Education Research Vol.1 No.1

漢문화는 베트남의 다방면에 다층적으로 영향을 미쳤다. 언어와 문자를 막론하고 정치제도, 사상관념, 풍속예절의식 등 어느 하나 漢문화의 그림자를 숨길 수 있는 영역이 없고, 漢문화의 중요한 매개체인 한자는 漢문화의 전파에 있어서 필연적으로 매우 중요한 지위를 차지한다. 그렇다면 왜 이러한 현상이 존재하는가라는 질문에 대해 우리는 양국의 교류 역사 안에서 그 답을 얻을 필요가 있다. 본 연구는 주로 베트남에 수동적으로 전파된 한어·한자와 주동적으로 전파된 한어·한자 및 베트남에서 소멸된 한어·한자 등 이라는 세 방면으로 진술을 전개하였다. The influence of Chinese culture on Vietnam is multi-faceted and multi-layered. Whether it is language, character or political system, ideas, customs and ceremonies, it hides the shadow of Chinese culture, and Chinese characters, as an important carrier of Chinese culture occupy a very important position in the propagation of Chinese culture. So why is this happening? This requires us to find the answer from the history of communication between Vietnam and China. We will mainly express the three aspects inclunding the passive propaga tion of Chinese characters in Vietnam, the active propagation of Chinese characters in Vietna m, and the disappearance of Chinese characters in Vietnam.

Multi-platform metabolomics and a genetic approach support the authentication of agarwood produced by <i>Aquilaria crassna</i> and <i>Aquilaria malaccensis</i>

Nguyen, Huy Truong,Min, Jung-Eun,Long, Nguyen Phuoc,Thanh, Ma Chi,Le, Thi Hong Van,Lee, Jeongmi,Park, Jeong Hill,Kwon, Sung Won Elsevier 2017 Journal of pharmaceutical and biomedical analysis Vol.142 No.-

<P><B>Abstract</B></P> <P>Agarwood, the resinous heartwood produced by some <I>Aquilaria</I> species such as <I>Aquilaria crassna</I>, <I>Aquilaria malaccensis</I> and <I>Aquilaria sinensis</I>, has been traditionally and widely used in medicine, incenses and especially perfumes. However, up to now, the authentication of agarwood has been largely based on morphological characteristics, a method which is prone to errors and lacks reproducibility. Hence, in this study, we applied metabolomics and a genetic approach to the authentication of two common agarwood chips, those produced by <I>Aquilaria crassna</I> and <I>Aquilaria malaccensis</I>. Primary metabolites, secondary metabolites and DNA markers of agarwood were authenticated by <SUP>1</SUP>H NMR metabolomics, GC–MS metabolomics and DNA-based techniques, respectively. The results indicated that agarwood chips could be classified accurately by all the methods illustrated in this study. Additionally, the pros and cons of each method are also discussed. To the best of our knowledge, our research is the first study detailing all the differences in the primary and secondary metabolites, as well as the DNA markers between the agarwood produced by these two species.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Current examination of agarwood is mostly based on visual examination and thus prone to error. </LI> <LI> Multi-platforms metabolomics well distinguished two popular agarwood types. </LI> <LI> DNA markers also showed clear differences in genetic variation between two agarwood species. </LI> <LI> Metabolomics and genetic approach both well supported the authentication of agarwood. </LI> </UL> </P>

Robust and adaptive control of Euler-Lagrange systems with an attractor independent of uncertainties

Nguyen Trung Quan,Nguyen Doan Phuoc 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10

Tracking control for Euler ? Lagrange (EL) systems is a very important problem. Current control methods have achieved a lot of success in solving the problem with the accurate and stable kinetic model as well as no disturbance. Facts have shown that there were many EL systems working in unstable environment, or carrying different masses, which is conducive to significant modeling errors, disturbances or uncertain constants. Therefore, it is necessary to design adaptive controller, robust controller, and disturbance attenuating controller or even associate all of them to meet actual requirements. This paper presents a method to solve these both three problems with ability of maintaining tracking error in an arbitrary sufficiently small neighborhood of the origin, which is independent on the value of uncertain constants.