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224 results on '"Luong N"'

1. Linking endogenous decay and sludge bulking in the microbial community to membrane fouling at sub-critical flux

Author

Anh Q. Nguyen, Luong N. Nguyen, Md Abu Hasan Johir, Huu Hao Ngo, and Long D. Nghiem

Subjects
Membrane fouling, Microbial community, Membrane bioreactors, Biofouling layer, Sludge bulking, Chemistry, QD1-999
Abstract

This study examined membrane fouling and associated microbial taxa in a membrane bioreactor operating at a sub-critical flux condition using next-generation amplicon sequencing. The membrane was operated at a sub-critical flux, thus, fouling was not observed until endogenous decay. The observed fouling could be attributed to endogenous decay which was driven by nutrient deficiency at high sludge age and low food-to-microorganisms ratio (decreasing from 0.15 to 0.09 gBOD/gMLVSS.d). Endogenous decay resulted in a sharp decrease of the number of species and evenness between different species (49.7 and 58.9% compared to the inoculum, respectively). The release of dissolved organic matters and cell debris from endogenous decay as well as the excessive growth of filamentous bacteria, e.g. Thiotrichales were the main contributors to membrane fouling. The relative abundance of Thiotrichales significantly correlated with TMP (Pearson R = 0.996, p-value

Published
2022
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2. Intention to Quit and Predictive Factors Among Current Smokers in Vietnam: Findings From Adult Tobacco Survey 2020

Author

Le T Hoang, Tran T Tuyet Hanh, Luong N Khue, Phan T Hai, Phan V Can, Khuong Q Long, Nguyen T Linh, Duong T Anh, and Hoang Van Minh

Subjects
Public aspects of medicine, RA1-1270
Abstract

BACKGROUND Smoking leads to many smoking-attributable diseases. The promotion of quitting tobacco smoking is urgent as it has significant and immediate health benefits and improves the impacts of other tobacco control strategies. Intention to quit smoking is considered the first step before quitting smoking. METHODOLOGY This paper used data from Vietnam provincial GATS 2020 on 80,166 participants who were 15-year-old or older. Data were collected from 34 provinces and cities throughout Vietnam and managed using REDCap. RESULTS Among those who were current smokers, 50.3% (95% CI: 49.1%–51.4%) had the intention to quit smoking. Some predictive factors found to be positively associated with the intention to quit smoking were age (from 45-64), education level, received information about harmful effects or encouragement to quit smoking from media channels (from 6 channels), hearing about the Tobacco Control Law and noticing health warnings on the cigarette package. There was no significant difference in intention to quit smoking between current smokers from urban and rural areas or among different age groups to start smoking. CONCLUSIONS Interventions or health promotion programs on smoking cessation should be focused on current smokers who have low education levels as they have a higher smoking rate and are less motivated to stop smoking. Received information about harmful effects or encouragement to quit smoking from media channels is also associated with stopping smoking in the future. The importance of health warning pictures on tobacco packages should be maintained and promoted as it has a specific effect on one’s intention to stop smoking.

Published
2022
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3. How microalgal biotechnology can assist with the UN Sustainable Development Goals for natural resource management

Author

Donna L. Sutherland, Janice McCauley, Leen Labeeuw, Parijat Ray, Unnikrishnan Kuzhiumparambil, Christopher Hall, Martina Doblin, Luong N. Nguyen, and Peter J. Ralph

Subjects
Sustainable transformation, Bioremediation, Bioplastics, Nutraceuticals, UN SDG, Environmental sciences, GE1-350, Environmental protection, TD169-171.8
Abstract

A key interlinking factor of many global issues is the accumulated negative effects of pollution and poor resource/land management of our remaining natural resources. Emerging applications of microalgal biotechnology demonstrate the potential for microalgae to solve some of these challenges by reducing aquatic pollutants, as well as providing a source of sustainably produced feedstock for product development. This review describes how microalgal biotechnology can assist in the achievement of a number of the United Nation’s Sustainable Development Goals, including Zero Hunger, Clean Water and Sanitation, Affordable and Clean Energy, Responsible Consumption and Production, Life Below Water and Life on Land.

Published
2021
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4. Combating antimicrobial resistance: quality standards for prescribing for respiratory infections in Vietnam

Author

Ryan Li, H Rogier van Doorn, Heiman F L Wertheim, Luong N Khue, Ngo T B Ha, Vu Q Dat, Chu T Hanh, Do T T Nga, Nghiem N M Trang, Behzad Nadjm, Francoise Cluzeau, Nguyen V Kinh, Nguyen V Trung, Nguyen T L Huong, Ngo Q Chau, La Q Huong, Le T Thao, Le T A Hong, Tran T M Oanh, Jasmin Islam, C Michael Roberts, and Kalipso Chalkidou

Subjects
Public aspects of medicine, RA1-1270
Published
2016
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