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Toan Van Pham,Vinh Mai Phuoc,Dung Van Nguyen,Jiro Koyama 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
Pesticide containing wastewater is concerned due to their toxicity to human health and the environment, and therefore, is attracted much attention by public communities and scientists. This type of wastewater can be treated by conventional treatment methods including physical, chemical, biological methods and so on. Unfortunately, the efficiency of these methods are mostly undesired as expectation because they cannot completely remove toxic organic pollutants from wastewater. In this study, an experiment on laboratory scale model of cold plasma technology, a well-known water treatment method in recent decades, was performed to assess its efficiency on removing pesticide fenobucarb from the wastewater. Furthermore, another experiment on laboratory scale model of the cold plasma combined with coagulation/flocculation and ion exchange process was implemented to assess the efficiency of these combination and each process as well on treatment of pesticide containing wastewater. Experimental results demonstrated that the model of technologies combined was high effective in removing organic pollutants from wastewater. However, the specific efficiency of cold plasma technology in treating wastewater was low. Treatment time, energy supply and wastewater characteristics are the factors which are necessary to be further studied for cold plasma technology application.
Toan Van Pham,Vinh Mai Phuoc,Dung Van Nguyen,Jiro Koyama 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
Pesticide containing wastewater is concerned due to their toxicity to human health and the environment, and therefore, is attracted much attention by public communities and scientists. This type of wastewater can be treated by conventional treatment methods including physical, chemical, biological methods and so on. Unfortunately, the efficiency of these methods are mostly undesired as expectation because they cannot completely remove toxic organic pollutants from wastewater. In this study, an experiment on laboratory scale model of cold plasma technology, a well-known water treatment method in recent decades, was performed to assess its efficiency on removing pesticide fenobucarb from the wastewater. Furthermore, another experiment on laboratory scale model of the cold plasma combined with coagulation/flocculation and ion exchange process was implemented to assess the efficiency of these combination and each process as well on treatment of pesticide containing wastewater. Experimental results demonstrated that the model of technologies combined was high effective in removing organic pollutants from wastewater. However, the specific efficiency of cold plasma technology in treating wastewater was low. Treatment time, energy supply and wastewater characteristics are the factors which are necessary to be further studied for cold plasma technology application.
Salmonella enteritis: A Rare Cause of Adult Intussusception
Toan Pham,Domenic La Paglia,Meron Pitcher 대한대장항문학회 2017 Annals of Coloproctolgy Vol.33 No.5
Intussusception is a relatively rare condition in the adult population and is commonly secondary to a malignant process. Eight to twenty percent of cases of adult intussusception are thought to be idiopathic. In children, infection has been proven to precipitate intussusception in the absence of any other cause. We present a rare case of intussusception in a healthy adult patient secondary to salmonella infection and discuss infection as a potential explanation for a proportion of the cases of adult intussusception that are thought to be idiopathic. We recommend testing for infective causes of intussusception in adults when more common causes, such as malignancy, have been excluded.
Toan Khanh Pham TRAN,Truc Trung TRUONG 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.4
Servant leadership has been noticeable in the last decade in the leadership literature on account its focus on serving others first. The target of servant leadership is not the organization, but rather the followers and their development and also the ability to motivate others to become servant leaders. Serving leadership has been recognized as a leadership philosophy that addresses ethical concerns, which is linked to ethical leadership. This study aims to investigate the relationship between dimensions of servant leadership and public service motivation of civil servants. Data were collected from civil servants working in public organizations at district level in Ho Chi Minh City of Vietnam through survey forms. The research hypotheses are tested by factor analysis and regression. The results report that 7 dimensions of servant leadership positively affect public service motivation in the following ascending order: Empowerment, standing back, forgiveness, humility, integrity, accountability, and courage. On the other hand stewardship has an insignificant impact on the role of leading and supervising. Our study contributes to the existing literature on servant leadership as well as public service motivation by throwing light onto a so-far neglected transitional country like Vietnam. Thereby, this study proposes a number of implications for the leaders to improve leadership style to enhance public service motivation of civil servants.