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Continuous Behavior of Using Food Delivery Mobile Applications in Vietnam after Covid-19 Pandemic
Ha Thu LUONG(Ha Thu LUONG ),Nhi Lan DAO(Nhi Lan DAO ),Trang Thu NGUYEN(Trang Thu NGUYEN ),Uyen Thu Thi LA(Uyen Thu Thi LA ),Na Thi Le TRAN(Na Thi Le TRAN ),Hoa Thi DUONG(Hoa Thi DUONG ) 한국유통과학회 2023 유통과학연구 Vol.21 No.3
Purpose: During and after Covid-19 pandemic, technology has emerged as a key factor in supporting the recovery of the economy and the rise of living standards. This study examines seven factors affecting the intention of food delivery apps usage, which include Performance Expectancy, Effort Expectancy, Social Influence, Hedonic Motivation, Price Value, and Habit, and how much influence they have on the customers' behavioral continuance of food delivery apps after Covid-19 Pandemic. Research methodology: This research is a quantitative descriptive research with 473 qualified respondents from 550 respondents collected. Besides using the UTAUT2 model (Venkatesh et al., 2012), Information Quality was added to give a better explanation for the consumers’ intention towards continuance behavior using food delivery apps. The collected data is then processed using SPSS 22.0. Results: Habit factors and Information Quality factors have significant positive effects on promoting food delivery apps usage intention, which in turn influences continuance behavior. In addition, Habit factors and Information Quality factors together have an effect of 48.57% on Behavioral Intention. Conclusion: The result proves that positive habits and food information quality can increase the usage intention towards the behavioral continuance of consumers. Higher usage frequency can be improved by increasing these two factors.
Determinants Influencing Housing-Option Decision of Gen Y: The Case of Vietnam
Ha Thu LUONG(Ha Thu LUONG ),Dung Manh TRAN(Dung Manh TRAN ),Dan Linh Ngoc NGUYEN(Dan Linh Ngoc NGUYEN ),Van Bao NGUYEN(Van Bao NGUYEN ),Anh Thuc LE(Anh Thuc LE ),Hieu Van PHAM(Hieu Van PHAM ) 한국유통과학회 2023 유통과학연구 Vol.21 No.7
Helix Nucleation via Hydrocarbon Cross-link Mimicking N-capping Box
Luong Thuy Nguyen,Huy Xuan Luong,김영우 대한화학회 2016 Bulletin of the Korean Chemical Society Vol.37 No.4
The N-capping box is a well-known helix-stabilizing motif with a distinct reciprocal backbone–side chain hydrogen-bonding arrangement at the N-terminus of helices. This unique N-terminal flanking motif consists of a hydrogen-bonded cycle of four amino acid residues in which the backbone amide of the N3 residue forms a hydrogen bond with the side chain of the Ncap residue, and reciprocally, the side chain of the N3 accepts a hydrogen from the Ncap amide. In this study, as a new helix-stabilizing strategy, we examined a metathesis-based cross-linking system that mimics the hydrogen bond between the Ncap amide and the side chain of the N3 at the N-terminus. Using this new system, we prepared two alanine/lysine-based model peptides and analyzed its impact on helix stabilization. We found that a 16-membered macrocycle incorporated by ring-closing metathesis effectively induces and stabilizes helical conformations of the given model sequence.
Two new species of Camellia (Theaceae) from Vietnam
Lieu Thi Nguyen,Ninh Tran,Uematsu CHIYOMI,Katayama HIRONORI,Dung Van Luong,Son Thanh Hoang,Ky Danh NGUYEN,Hung Viet NGUYEN,Toan Canh THAI 한국식물분류학회 2018 식물 분류학회지 Vol.48 No.2
Two new species of Camellia (Theaceae) are described from Vietnam: Camellia vuquangensis Luong, Tran & L. T. Nguyen and Camellia hatinhensis Luong, Tran & L. T. Nguyen. The new taxa were col- lected from Vu Quang National Park in the center of Vietnam. The new finds are morphologically dissimilar to all known Camellia species. Recent Camellia discoveries have increased the number of species recorded in Viet- nam from 50 to 75, making Vietnam a center of diversity and a crucial area for more research into the diversity and distributions of Camellia.
Luong Quang-Phap,Nam Jong-Ho 한국CDE학회 2021 Journal of computational design and engineering Vol.8 No.4
The ship hull form is directly related to each design phase of a ship. This form is thus frequently designed based on a variation of a well-made parent ship to avoid new design risks. However, in hull form variation, satisfactory geometric preservation and good performance continuity of the parent ship are considered competing requirements. To effectively facilitate the variation, an appropriate compromise between these requirements should be achieved. Instead of altering hull form parameters, we propose a flexible and intuitive approach to interactively vary the hull surfaces with arbitrary curve constraints and to focus on preserving the properties of the original hull surface. The advantage of the superposition of the curve or surface is leveraged to modify the hull shape. An intermediate surface that satisfies an intermediate curve constraint and has a smooth shape is constructed and superimposed on the top of the original surface to yield the desired surface. A shape control mechanism using a shape function simplifies the control of the surface modification with a curve constraint. The developed method was applied to modify the characteristic curves and section curves situated on the stern part of a container vessel. The changes in the geometric shape and hydrodynamic performance due to the curve-constraint variation were assessed to demonstrate the practicality and efficiency of the proposed method. The results show that the proposed method produces a smooth shape and almost unchanging hydrodynamic patterns. The proposed variation provides an effective tool for varying the hull in a linear fashion.
Oxidative stress and calcium dysregulation by palmitate in type 2 diabetes
Luong Dai Ly,Shanhua Xu,최성경,하채명,THOUDAMTHEMIS,차승규,Andreas Wiederkehr,Claes B. Wollheim,이인규,박규상 생화학분자생물학회 2017 Experimental and molecular medicine Vol.49 No.-
Free fatty acids (FFAs) are important substrates for mitochondrial oxidative metabolism and ATP synthesis but also cause serious stress to various tissues, contributing to the development of metabolic diseases. CD36 is a major mediator of cellular FFA uptake. Inside the cell, saturated FFAs are able to induce the production of cytosolic and mitochondrial reactive oxygen species (ROS), which can be prevented by co-exposure to unsaturated FFAs. There are close connections between oxidative stress and organellar Ca2+ homeostasis. Highly oxidative conditions induced by palmitate trigger aberrant endoplasmic reticulum (ER) Ca2+ release and thereby deplete ER Ca2+ stores. The resulting ER Ca2+ deficiency impairs chaperones of the protein folding machinery, leading to the accumulation of misfolded proteins. This ER stress may further aggravate oxidative stress by augmenting ER ROS production. Secondary to ER Ca2+ release, cytosolic and mitochondrial matrix Ca2+ concentrations can also be altered. In addition, plasmalemmal ion channels operated by ER Ca2+ depletion mediate persistent Ca2+ influx, further impairing cytosolic and mitochondrial Ca2+ homeostasis. Mitochondrial Ca2+ overload causes superoxide production and functional impairment, culminating in apoptosis. This vicious cycle of lipotoxicity occurs in multiple tissues, resulting in β-cell failure and insulin resistance in target tissues, and further aggravates diabetic complications.
Luong Thi Oanh,Duong Thanh Tai,Truong Thi Hong Loan,James CL Chow 한국원자력학회 2021 Nuclear Engineering and Technology Vol.53 No.12
The aim of this study is to calculate the JO-IMRT dose distributions based on the AAPM TG-119 usingMonte Carlo (MC) simulation and Prowess Panther treatment planning system (TPS) (Panther, ProwessInc., Chico, CA). JO-IMRT dose distributions of AAPM TG-119 were calculated by the TPS and wererecalculated by MC simulation. The DVHs and 3D gamma index using global methods implemented inthe PTW-VeriSoft with 3%/3 mm were used for evaluation. JO-IMRT dose distributions calculated by TPSand MC were matched the TG-119 goals. The gamma index passing rates with 3%/3 mm were 98.7% formulti-target, 96.0% for mock prostate, 95.4% for mock head-and-neck, and 96.6% for C-shape. The dose inthe planning target volumes (PTV) for TPS was larger than that for the MC. The relative dose differencesin D99 between TPS and MC for multi-target are 1.52%, 0.17% and 1.40%, for the center, superior andinferior, respectively. The differences in D95 are 0.16% for C-shape; and 0.06% for mock prostate. Mockhead-and-neck difference is 0.40% in D99. In contrast, the organ curve for TPS tended to be smaller thanMC values. JO-IMRT dose distributions for the AAPM TG-119 calculated by the TPS agreed well with theMC.