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Nguyen, Hau Van,Nguyen, Van Dan,Lee, Eun Yeol,Seo, Tae Seok Elsevier 2019 Biosensors & bioelectronics Vol.136 No.-
<P><B>Abstract</B></P> <P>We present a fully integrated portable centrifugal microsystem for multiplex detection of food poisoning bacteria with a large volume of sample up to 1 mL. The microsystem consists of a portable genetic analyzer and a fully integrated centrifugal microdevice. The centrifugal microdevice is designed with two units: a 3D printed solution-loading cartridge and a centrifugal microfluidic disc. All the essential solutions for loop-mediated isothermal amplification (LAMP) reaction are stored inside the cartridge, and orderly released into centrifugal microdevice by a rotation program. Each unit of the device is designed with 20 reaction chambers for simultaneous detection of food-borne bacteria in one test. To increase the amount of a sample to 1 mL, we incorporated the super absorbent polymer (SAP) in the waste chamber to absorb the sample and the washing solution during the device operation. The whole process was automatically conducted including designated solution release, bead-based DNA extraction, isothermal gene amplification by Eriochrome Black (EBT)-mediated LAMP reaction, and colorimetric and UV–visible detection of amplicons. The ratio between Abs<SUB>640nm</SUB> and Abs<SUB>570nm</SUB> was used as a criterion to confirm the positive result, and the result was positive upon the condition of Abs<SUB>640</SUB>/Abs<SUB>570</SUB> ≥ 1.0. To demonstrate the pathogenic bacteria detection on our proposed microsystem, we targeted three kinds of bacteria (<I>Escherichia coli</I> O157:H7, <I>Salmonella typhimurium</I>, and <I>Vibrio parahaemolyticus</I>) for monoplex and multiplex detection. The whole process from sample to result was completed within 1 h with a low limit of detection (LOD) of 10<SUP>2</SUP> cells/mL.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A fully integrated centrifugal microfluidic device for POC DNA diagnostics is presented. </LI> <LI> Super absorption polymer (SAP) integration enables to handle 1 mL volume of a sample. </LI> <LI> A 3D-printed sample loading cartridge is combined for full automation of solution injection. </LI> <LI> A portable genetic analyzer is proposed for POCT. </LI> <LI> Sample-to-answer diagnostics of food-borne pathogens are demonstrated with low LOD. </LI> </UL> </P>
Chemical constituents and antioxidant activity of Ficus callosa.
Van Kiem, Phan,Cuong, Nguyen Xuan,Nhiem, Nguyen Xuan,Hang, Dan Thi Thuy,Nam, Nguyen Hoai,Ban, Ninh Khac,Minh, Chau Van,Bing, Zhou,Jang, Hae Dong,Kim, Young Ho Natural Product Communications 2011 Natural product communications Vol.6 No.2
<P>One new megastigmane glycoside, ficalloside (1), and eleven known compounds, were isolated from methanol extract of Ficus callosa leaves by repeated column chromatography. Their structures were established on the basis of spectral and chemical evidence. The antioxidant activities of these compounds were measured using the oxygen radical absorbance capacity (ORAC) assay. Compound 8 exhibited potent antioxidant activity of 10.6 microM trolox equivalents at the concentration of 2 microM. At this concentration, compounds 4-7 and 9-12 showed significant antioxidant activity with ranging of 2.1-6.1 microM trolox equivalents.</P>
The Multidimensional Masculinity in Nguyễn Huy Thiệp’s Short Stories
( Van Thuan Nguyen ),( Anh Dan Nguyen ),( Van Luan Nguyen ) 부산외국어대학교 아세안연구원 2024 Suvannabhumi Vol.16 No.1
Nguyễn Huy Thiệp is a pillar in Vietnamese cultural life after the Second Indochina War, and the fates of men and women at the beginning of Đổi mới (Renovation) is one of the prominent themes in his short stories. To show off sexual power, seek glory, and maintain his dominant position, Thiệp’s heroes engage in a game of oppressing the weak, hunting animals, and harassing women. However, due to the complex changes in social life, moral values, and gender inequality, men in the postwar period quickly experienced the feeling of humiliation, impotence, and failure. In turn, the sophisticated aspects of masculinity demonstrate the cultural and ethical concerns of contemporary Vietnamese society. By exploring the multidimensional nature of masculinity expressed in Thiệp’s stories, this study aims to resolve misconceptions about gender and the relationship between men and women in his work.
Ngoc Dan Thanh NGUYEN(Ngoc Dan Thanh NGUYEN ),Trong Phuc NGO(Trong Phuc NGO ),Ngoc Van MAI(Ngoc Van MAI ),Kim Ngan TRA(Kim Ngan TRA ),Tran Huy Hoang LE(Tran Huy Hoang LE ) 한국유통과학회 2023 유통과학연구 Vol.21 No.4
Purpose: This study aims to analyze the impact of Brand Anthropomorphism and Intimacy on Brand Engagement, and at the same time analyze the regulatory effect of Brand Reputation on the relationship between Brand Anthropomorphism and Intimacy and the relationship between Intimacy and Brand Engagement in terms of distribution brand. Results: The findings show that Brand Anthropomorphism, Intimacy, and Brand Reputation are important value factors in customers’ minds toward their behavior, and from there, they will contribute to creating positive emotions and interactions between consumers and brands. Research design, data, and methodology: This article used the quantitative technique utilizing PLS-SEM software to test the hypothesis with 1,060 samples. Collected data shows that consumers in Ho Chi Minh City have positive emotions and interactive and social behaviors toward smartphone brands. Conclusion: The study has demonstrated the conclusions and proposed solutions to help smartphone brands build Brand Anthropomorphism while enhancing Brand Reputation thereby achieving Intimacy, which leads to consumer Brand Engagement. In addition, this study complements the concept of Brand Anthropomorphism which is lacking in theoretical background and is the first study in Vietnam to explore the prefixes and suffixes of the concept of Brand Anthropomorphism and the regulatory role of Brand Reputation.
Chemical constituents of the Annona glabra fruit and their cytotoxic activity.
Hien, Nguyen Thi Thu,Nhiem, Nguyen Xuan,Yen, Duong Thi Hai,Hang, Dan Thi Thuy,Tai, Bui Huu,Quang, Tran Hong,Tuan Anh, Hoang Le,Kiem, Phan Van,Minh, Chau Van,Kim, Eun-Ji,Kim, Seung Hyun,Kang, Hee Kyoun Swets Zeitlinger 2015 PHARMACEUTICAL BIOLOGY Vol.53 No.11
<P>Traditional Chinese medicines have attracted increasing interest as potential sources of novel drugs with a wide range of biological and pharmacological activities. Annona glabra Linn (Annonaceae) is used in traditional medicine as an anticancer drug. Phytochemical investigation of this plant led to the isolation of acetogenins, ent-kauranes, peptides, and alkaloids. In addition, compounds exhibited anticancer, anti-HIV-reserve, and antimalaria.</P>
Minh Mang Thang, the Mysterious Vietnamese Prescription Containing Korean Ginseng
Thi Hong Van Le,Van Dan Nguyen,Manh Hung Tran 고려인삼학회 2024 인삼문화 Vol.6 No.1
Emperor Minh Mang (明命), the second ruler of the Nguyen Dynasty in Vietnam, reigned from 1820 to 1841. He is widely regarded by contemporary historians as the most distinguished monarch of his dynasty, despite some controversial policies. One aspect of his extraordinary legacy is the remarkable 142 offspring he sired - 78 princes and 64 princesses - earning him the unprecedented distinction of having the most progeny among kings in world history. Vietnamese people suppose Minh Mang's prolific reproductive success to the consumption of a specially prescribed medicine known as Minh Mang Thang (明命湯, MMT). This medicine, often associated with sexual potency and fertility, is characterized by intriguing names such as "One night Five sexes ," "One night Six sexes born Five babies ," or "Six sexes Three pregnancies ." Vietnamese folklore vividly recounts Minh Mang's exceptional sexual prowess, attributing it to the use of MMT. MMT formulations, which include various herbs, notably Korean ginseng, may incorporate additional botanical ingredients depending on their intended purpose. This paper aims to explore the origins, history, ingredients, and applications of MMT, unraveling the mystery behind this mystical prescription that has inspired several oriental medicinal researchers. Through this investigation, we seek to shed light on the cultural and historical contexts surrounding Minh Mang's use of MMT and its enduring impact on traditional Vietnamese medicine and folklore. Vietnam boasts a legendary herbal medicine recipe associated with Emperor Minh Mang, bearing the intriguing names "One night Five sexes ",1) "One night Six sexes born Five babies ",2) and "Six sexes Three pregnancies ".3) This unique medicinal concoction, simply known as Minh Mang Thang (MMT),4) has been the subject of numerous handed-down prescriptions. This paper aims to delve into the history, origin, prescription, and uses of MMT.