Publications by authors named "Kuo-Wei Lin"

The demand for extra-thin, large-area, and high-luminance flat-panel displays continues to grow, especially for portable displays such as gaming laptops and automotive displays. In this paper, we propose a design that includes a light guide layer with a microstructure above the mini-light-emitting diode light board. The light control microstructure of concave parabel-surface microlens arrays on a light-emitting surface increases the likelihood of total internal reflection occurring and improved the uniformity merit function.

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  • The synthesis utilizes inexpensive (+)-pulegone as a chiral building block to create complex diquinane structures like (+)-paniculatine, (-)-magellanine, and (+)-magellaninone.
  • Key techniques in this synthesis include tandem acylation-alkylation, along with palladium-catalyzed reactions for building the tetracyclic framework.
  • This method is notably efficient, requiring only 12-14 steps, making it the shortest synthesis route reported so far.
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Unlabelled: The physicochemical and sensory characteristics of pork frankfurters containing different levels (10% to 30%) of bacterial cellulose (nata) were evaluated. Emulsion stability of the raw meat batter decreased with the addition of nata. For nata-added treatments, increasing levels of nata in frankfurters resulted in decreased textural hardness and shear values.

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  • The study examined the antiallergic effects of dioscorins from different Dioscorea species using a mouse model induced with OVA allergies.
  • Dioscorins were found to reduce allergic reactions by lowering serum IgE and histamine levels, while boosting IFN-γ and IgG2a levels.
  • The findings suggest that dioscorins might help suppress allergic responses by balancing the Th1/Th2 immune response, as indicated by decreased IL-5 levels in treated mice.
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Background: Dioscorins are the major storage proteins of yam tubers. However, the molecular nature of their heterogeneity in tubers has not been fully elucidated. In this study the authors isolated the dioscorin gene families of Dioscorea japonica and Dioscorea pseudojaponica, performed matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) and elucidated which dioscorin isoforms are the major constituents in tubers.

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  • Dioscorins, the main storage proteins in yam tubers, show biochemical and immunomodulatory functions, making them interesting for biomedical research.
  • Two dioscorin genes (Dj-dioA3 and Dp-dioA2) were successfully expressed in E. coli, yielding significant amounts of recombinant proteins (15-30 mg/L for rDj-dioscorinA3 and 4-8 mg/L for rDp-dioscorinA2).
  • Analyses revealed that these recombinant proteins resemble native dioscorins in structure and function, exhibiting similar antigenic properties, radical scavenging abilities, and the capacity to enhance macrophage activity against pathogens, indicating their potential for future biomedical applications.
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Physicochemical properties, sensory traits, and protein surface hydrophobicity of Chinese-style meatball (20% fat) processed from various combinations of xylooligosaccharides (XOS) and sucrose were investigated. No significant differences in pH and water-holding capacity were noted for treatments following cooking and frozen storage. Sensory springiness, hardness, chewiness, and overall acceptability of all treatments were found not significantly different.

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Background And Purpose: In addition to being an allergen, the trypsin activity of dust mite extract also destroys the tight junctions of bronchial epithelium. Such damage can lead to airway leakage, which increases airway exposure to allergens, irritants, and other pathogens. Dioscorin, the storage protein of yam, demonstrates anti-trypsin activity, as well as other potential anti-inflammatory effects.

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  • The paper presents a single-camera system designed to automatically detect wheelchairs and their movement direction, aimed at improving patient monitoring in healthcare settings.
  • The proposed method uses a cascaded decision tree (CDT) integrated with boosted-cascade classifiers to efficiently distinguish wheelchairs from non-wheelchair objects and identify their direction quickly.
  • Experiments demonstrated that this system achieves over 92% detection accuracy even in crowded environments, enhancing both detection speed and reliability.
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The aim of this study was to elucidate the effect of the major storage protein dioscorin isolated from two different yam species, Tainong No. 1 (TN1-dioscorins) and Japanese yam (Dj-dioscorins), on the immune activities of mice. Dj-dioscorins, like TN1-dioscorins, could induce expression of the pro-inflammatory cytokines and stimulate phagocytosis of RAW 264.

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Physical and textural properties of varying molecular-weight konjac gels made by ultrasonic degradation were compared and gels were processed into low-fat Chinese-style sausages for the evaluation of textural and sensory characteristics. Results showed that as molecular weights decreased, storage modulus and loss modulus of konjac gels of varying molecular weights declined, indicating more elastic and viscous konjac gels. Shear values and textural springiness and cohesiveness of Chinese sausage were similar among all treatments.

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This TiCl 4-Mg promoted multicomponent coupling of various amides with CH(2)Cl(2) and methyl acrylate represents an extremely simple and practical synthesis of 1,5-keto esters. The efficiency of this chemistry is illustrated by the very simple preparation of unusual 4,4-dideuterio-1,5-keto esters.

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The direct coupling of a variety of amides with CH2 Cl2 or CD2 Cl2 promoted by TiCl 4/Mg/THF provides an extremely simple, practical, selective, and efficient approach for the construction of methyl ketones. The efficiency and practicability of this chemistry is illustrated by the very simple synthesis of deuterated methyl ketones.

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  • The titanium-methylene complexes from the TiCl(4)-Mg-CH(2)Cl(2) system act as new ambiphilic carbenoid equivalents.
  • They can effectively carry out cyclopropanations on different types of amides.
  • These complexes show a high level of chemoselectivity in their reactions.
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[reaction: see text] Dichloromethane serves as a novel electrophilic carbene equivalent which adds to an enamine double bond. The presence of other alkene moieties in the enamine partner is well tolerated. Even enamines derived from sterically hindered ketones react readily with dichloromethane promoted by TiCl(4)-Mg.

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[reaction: see text] The successful application of CH2Cl2-Mg-TiCl4-system mediated methylenation of various esters such as tert-butyl ester and 2,5-cyclohexadiene-1-carboxylate highlights the extraordinary reactivity, selectivity, and the nonbasic nature of this new methylene-carbenoid, which serves as a practical reagent applicable to large-scale synthesis.

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  • Mixed gels of konjac and gellan gum were tested in reduced-fat frankfurters (18%) and compared to high-fat (28%) and other reduced-fat controls.
  • C28 (high-fat) showed the best lightness and juiciness but had poor texture compared to those with added gums, which maintained sensory acceptability.
  • After 12 weeks, the reduced-fat frankfurters with added gums had significant bacterial counts, suggesting they maintain decent shelf life while still being enjoyable.
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The efficacy of using additives to improve the shelf life of low-fat (approximately 18%) Chinese-style sausages was demonstrated. Sausages containing 3% sodium lactate (SL), 0.2% trisodium phosphate (TSP) or 0.

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