Research on the Effect of Health food on Consumer Purchase Intention

Ying-Mei Lee,Zhang Xiangqian,Wen-Tsann Lin,Meng-Hua Li,Hung-Lung Chang 대한산업공학회 2015 대한산업공학회 추계학술대회논문집 Vol.2015 No.11

This study used the structural equation modeling (SEM) of SPSS and AMOS to verify the hypotheses on the correlation between various dimensions, which were all supported. The correlations were significantly positive. The results showed that the effect of consumer health concept on algae product knowledge is significantly positive, where path coefficient is 0.9, indicating that consumers with health concept are more willing to accept new algae product knowledge, thereby affecting their purchase intention on algae product.

Rapid Microfluidic Mixing-chip System for Sorbic Acid Detection in Foods

( Chun-ying Chen ),( Lung-ming Fu ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

An integrated microfluidic experimental platform is presented for sorbic acid (C₆H₈O₂) concentration detection purposes. The integrated microfluidic platform comprises a mixer and heater zone for species mixing / reaction and a micro-spectrometer system detection zone for C₆H₈O₂concentration detection. The microfluidic reaction chip is patterned on low-cost PMMA substrates using a commercial CO₂lasersystem and is packaged using a hot-press bonding technique. In the proposed platform, the C₆H₈O₂ sample and Iron(III) reagent are mixed under the effects of a high-pressure gas driving force. A colorimetric reaction (oxidation reaction) of the mixed species is then induced by means of an integrated micro heating / cooling system. The microfluidic reaction chip is then transferred to a micro-spectrometer system for detection purposes. Absorbance was measured at 529 nm using a micro-spectrometer wherein a line regression is obtained to determine the C₆H₈O₂concentration. The experimental results show that correlation coefficients of R²=0.9910 is obtained with known concentrations ranging from 10~100 ppm. The real-world applicability of the proposed experimental platform is demonstrated by measuring the C₆H₈O₂ concentration in two commercial food samples. It is shown that the concentration measurements obtained using the proposed system deviate by no more than 5% from those obtained using standard macroscale methods.

Detrital zircon evidence for the antiquity of Taiwan

Ching-Ying Lan,Tadashi Usuki,Kuo-Lung Wang,Tzen-Fu Yui,Kazuaki Okamoto,Yuan-Hsi Lee,Takafumi Hirata,Yoshitaka Kon,Yuji Orihashi,Juhn G. Liou,Chun-Sun Lee 한국지질과학협의회 2009 Geosciences Journal Vol.13 No.3

In-situ U–Pb geochronology and Hf isotopic studies of zircons from the Pre-Tertiary basement complex and Eocene rocks of the Central Range of Taiwan were carried out to elucidate the history of detrital zircons older than 2.3 Ga. Zircons from the eastern Backbone Range and Eastern Central Range show Paleoproterozoic to late Neoarchean ages (2.3 –³2.5 Ga), whereas those from the Hsuehshan Range yield Neoarchean to Mesoarchean ages (2.6–3.2 Ga). The εHf(T) for the Paleoproterozoic to late Neoarchean zircons varies from –7.4 to +5.1, implying both juvenile crustal growth and reworking of old crusts. This dual origin could extend back to Mesoarchean–Paleoarchean (3.0–3.4 Ga) based on Hf isotopic model ages. Consistent but narrower εHf(T) values and Hf crustal model ages for zircons from Taiwan compared to Cathaysia suggest a possible common origin for these zircons, although Taiwan has a generally younger crustal evolution history than SE China.

Correspondence on Letter regarding “Toward hepatitis C virus elimination using artificial intelligence”

Ming-Ying Lu,Ming-Lung Yu 대한간학회 2024 Clinical and Molecular Hepatology(대한간학회지) Vol.30 No.2

Mahonia oiwakensis Extract and Its Bioactive Compounds Exert Anti-Inflammatory Activities and VEGF Production Through M2-Macrophagic Polarization and STAT6 Activation

Yea-Chen Liu,Yu-Ying Hsiao,Kuo-Lung Ku,Hui-Fen Liao,Wei-Chun Chao 한국식품영양과학회 2018 Journal of medicinal food Vol.21 No.7

Macrophages play an indispensable role in the host immune defense. Macrophages can undergo polarization into classically (M1) and alternatively (M2) activated macrophages. M1 macrophages activate immune and inflammatory response, while M2 macrophages are involved in tissue remodeling. Mahonia oiwakensis (Mo) is a herbal medicine in Asia used for its anti-inflammatory and analgesic properties; however, the mechanism is unclear. This study analyzed the effect of Mo extracts and its effects on the polarization of both macrophage RAW264.7 cells and mouse splenic macrophages. Water (Mo-W) and EtOH extracts (Mo-E) did not change the viability of RAW264.7 cells, whereas Mo-E inhibited nitric oxide (NO) production. The major compounds, berberine and palmatine, decreased the viability and NO levels of cells. The secretion of inflammatory cytokines CXCL16, IL-6, L-selectin, MCP1, RANTES, and sTNF-R1 was downregulated, whereas the production of vascular endothelial growth factor (VEGF) was upregulated by Mo-E, berberine, and palmatine treatments. Mo-E, berberine, and palmatine stimulated the expression of macrophage CD68 and M2-type CD204 markers, decreased M1-mediated p-STAT1 and NF-κB, and increased M2-mediated p-STAT6 expression. Similar effects on M2 polarization were also observed in splenic macrophages from mice. In conclusion, Mo-E, berberine, and palmatine modulated macrophages through the suppression of M1-mediated inflammation and the recruitment of M2-mediated VEGF secretion and STAT6 expression.

Species-specific primers in multiplex PCR for Bactrocera minax identification using an internal transcribed spacer

Regmi Prakriti,Tsai Cheng-Lung,Lin Ming-Ying,Chuang Yi-Yuan,Yeh Wen-Bin 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.4

Bactrocera minax (Enderlein), commonly known as the Chinese citrus fly, is a citrus pest native to China and nearby countries. B. minax can cause substantial losses in citrus orchards. B. minax can be spread to countries free from it by the global trade of citrus and by travelers carrying citrus. Timely, convenient, and accurate identi fication of B. minax is essential in preventing its spread. In the present study, the nuclear ribosomal internal transcribed spacer 2 (ITS2) amplicon was used to design species-specific primer pairs that enable B. minax to be distinguished from 11 other fruit fly species. Four forward and four reverse species-specific primers were designed, and out of all possible sets of species-specific primer pairs obtained after intermixing them, seven sets of species-specific primer pairs were able to accurately identify B. minax. For B. minax identification, specific fragments ranging from 83 to 431 base pairs in length were amplified. The validity of the specific band only in B. minax was determined by visually inspecting the gel profile of the PCR product. B. minax was correctly identified using the designed species-specific primer pairs, with no cross-amplification with the 11 other fruit fly species included in the experiments. In addition to saving DNA sequencing costs, the application of these speciesspecific primer pairs facilitates rapid identification of B. minax, with identification in border scenarios being completable within 2–3 h.

Enhanced UV/blue fluorescent sensing using metal-dielectric-metal aperture nanoantenna arrays

Quang Minh Ngo,Ying-Lung D. Ho,Jon R. Pugh,Andrei Sarua,Martin J. Cryan 한국물리학회 2018 Current Applied Physics Vol.18 No.7

Subwavelength aperture antenna arrays are designed and fabricated for potential applications in fluorescence sensing in the near UV/blue range. They are designed using finite-difference time-domain (FDTD) simulation, fabricated using focused ion beam etching and characterised using angular Fourier spectroscopy. The aperture arrays are formed in the top layer of an aluminum-silica-aluminum trilayer and produce a maximum simulated field intensity enhancement of 5.8 times at 406 nm and highly directive emission with a beamwidth of 8.3 deg. The normal incidence reflection response has been measured and shows reasonable agreement with modelled results. In addition, to investigate higher field intensity enhancements, bowtie aperture arrays are simulated and the influence of parameters such as dielectric gap, position of dipole source, and aperture shape and size are discussed and show enhancements up to 67 times are possible.

Use of Information Technologies to Explore Correlations between Climatic Factors and Spontaneous Intracerebral Hemorrhage in Different Age Groups

Hsien-Wei Ting,Chien-Lung Chan,Ren-Hao Pan,Robert K. Lai,Ting-Ying Chien 한국정보과학회 2017 Journal of Computing Science and Engineering Vol.11 No.4

Spontaneous intracerebral hemorrhage (sICH) has a high mortality rate. Research has demonstrated that sICH occurrence is related to weather conditions; therefore, this study used the decision tree method to explore the impact of climatic risk factors on sICH at different ages. The Taiwan National Health Insurance Research Database (NHIRD) and other open-access data were used in this study. The inclusion criterion was a first-attack sICH. The decision tree algorithm and random forest were implemented in R programming language. We defined a high risk of sICH as more than the average number of cases daily, and the younger, middle-aged and older groups were calculated as having 0.77, 2.26 and 2.60 cases per day, respectively. In total, 22,684 sICH cases were included in this study; 3,102 patients were younger (<44 years, younger group), 9,089 were middle-aged (45–64 years, middle group), and 10,457 were older (>65 years, older group). The risk of sICH in the younger group was not correlated with temperature, wind speed or humidity. The middle group had two decision nodes: a higher risk if the maximum temperature was >19°C (probability = 63.7%), and if the maximum temperature was <19°C in addition to a wind speed <2.788 (m/s) (probability = 60.9%). The older group had a higher risk if the average temperature was >23.933°C (probability = 60.7%). This study demonstrated that the sICH incidence in the younger patients was not significantly correlated with weather factors; that in the middle-aged sICH patients was highly-correlated with the apparent temperature; and that in the older sICH patients was highly-correlated with the mean ambient temperature. “Warm” cold ambient temperatures resulted in a higher risk of sICH, especially in the older patients.

Use of Information Technologies to Explore Correlations between Climatic Factors and Spontaneous Intracerebral Hemorrhage in Different Age Groups

Ting, Hsien-Wei,Chan, Chien-Lung,Pan, Ren-Hao,Lai, Robert K.,Chien, Ting-Ying Korean Institute of Information Scientists and Eng 2017 Journal of Computing Science and Engineering Vol.11 No.4

Spontaneous intracerebral hemorrhage (sICH) has a high mortality rate. Research has demonstrated that sICH occurrence is related to weather conditions; therefore, this study used the decision tree method to explore the impact of climatic risk factors on sICH at different ages. The Taiwan National Health Insurance Research Database (NHIRD) and other open-access data were used in this study. The inclusion criterion was a first-attack sICH. The decision tree algorithm and random forest were implemented in R programming language. We defined a high risk of sICH as more than the average number of cases daily, and the younger, middle-aged and older groups were calculated as having 0.77, 2.26 and 2.60 cases per day, respectively. In total, 22,684 sICH cases were included in this study; 3,102 patients were younger (<44 years, younger group), 9,089 were middle-aged (45-64 years, middle group), and 10,457 were older (>65 years, older group). The risk of sICH in the younger group was not correlated with temperature, wind speed or humidity. The middle group had two decision nodes: a higher risk if the maximum temperature was >$19^{\circ}C$ (probability = 63.7%), and if the maximum temperature was <$19^{\circ}C$ in addition to a wind speed <2.788 (m/s) (probability = 60.9%). The older group had a higher risk if the average temperature was >$23.933^{\circ}C$ (probability = 60.7%). This study demonstrated that the sICH incidence in the younger patients was not significantly correlated with weather factors; that in the middle-aged sICH patients was highly-correlated with the apparent temperature; and that in the older sICH patients was highly-correlated with the mean ambient temperature. "Warm" cold ambient temperatures resulted in a higher risk of sICH, especially in the older patients.

The Presence of Borrelia valaisiana-Related Genospecies in Ticks and a Rodent in Taiwan

Chun-Man Huang,Hsi-Chieh Wang,Ying-Chun Lin,Shih-Hui Chiu,Ying-Shun Kao,Pei-Lung Lee,Hsiu-I Wang,Ruei-Chen Hung,Huang-I Chan,Ho-Sheng Wu,Chuen-Sheue Chiang,Jung-Jung Mu 한국미생물학회 2010 The journal of microbiology Vol.48 No.6

A field survey was conducted to investigate the presence of Borrelia burgdorferi sensu lato (s.l.) in six counties of Taiwan. Spirochetes were successfully isolated from one rodent ear sample out of 485 rodent ears and 53live, fed tick (Ixodes granulatus) samples. The spirochetes were confirmed to be B. burgdorferi s.l. by real-time PCR. In addition, 23 of 113 tick samples were tested positive for Borrelia DNA according to real-time PCR. The Borrelia isolate from the rodent and the 23 Borrelia DNA samples from the ticks were identified as B. valaisiana-related genospecies by phylogenetic analysis based on flagellin gene sequences. These findings suggest that the Borrelia valaisiana-related strains are maintained in a zoonotic cycle between tick vectors and reservoir hosts in Taiwan.