Ho Chi Minh City University of Technology (HCMUT); Vietnam National University Ho Chi Minh City (VNU-HCM)

Abstract

Objectives. The study aimed to analyze the current antiseptics and disinfectants, explore the possibility of synthesizing various antiseptics including oligohexamethylene guanidine hydrochloride (OHMG-HC) using microfluidic technology, and investigate the main synthesis parameters affecting the properties of the resulting product.Methods. This article presented a review of literature sources associated with investigations of antimicrobial resistance, the uses of agents based on polyhexamethylene guanidine hydrochloride, oligohexamethylene guanidine hydrochloride, and other salts, obained using modern synthesis technologies with microreactors.Results. The relevance of developing production technologies for the “OHMG-HC branched” substance was determined. The microfluidic method for the synthesis of polymers, and its application prospects for obtaining the target substance were compared with the existing methods. Advantages of the microfluidic method were indicated.Conclusions. Microreactor technologies allow for more accurate control of the conditions of the polycondensation reaction of the starting monomers and increase the yield and selectivity of the oligomers obtained, leading to an increase in the product purity and process efficiency, in contrast with other known methods. The use of microreactor technologies for the synthesis of branched oligohexamethylene guanidine hydrochloride products is a promising strategy.

Magnitude, Patterns, and Associated Predictors of Cardiovascular Events in Tetanus: A 2-Year, Single-Center, Ambidirectional Cohort Study Involving 572 Patients

“…In Vietnam, although our study clinic is the leading center for tetanus [ 3 ], TCM was not documented previously because of the lack of bedside echocardiography in the intensive care unit (ICU). This is demonstrated by a study conducted at our study clinic in 2018 showing that among 14 of 164 (8.5% [95% CI, 5.2%–13.8%]) patients with tetanus with CEs, only MI (12/164) and arrhythmia (2/164) were documented [ 20 ]. The high MI frequency documented in this study probably included those with TCM but were misdiagnosed.…”

An evaluation on community participation in ecotourism activities post Covid-19 pandemic at Tan Loc islet, Thot Not district, Can Tho city

“…At the seminar on: "Building a strategy for developing ecotourism in Vietnam" (09/1999) of the tourism development research institute under the Vietnam National Administration of Tourism in collaboration with many international organizations such as Economic and Social Commission for Asia and the Pacific (ESCAP), World Wide Fund For Nature (WWF), International Union for Conservation of Nature (IUCN) with the participation of international and Vietnamese experts and scientists gave a definition of ecotourism: "Ecotourism is a type of tourism based on nature and indigenous culture, associated with environmental education, contributing to conservation and sustainable development efforts, with the active participation of local communities". This definition is considered a favorable prelude to ecotourism research and development activities in Vietnam (Ba, 2009).…”