230 research outputs found

    Additional file 3 of Chinese residents’ knowledge about and behavior towards dairy products: a cross-sectional study

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    Additional file 3: Table S3. Diary purchasing behavior of Chinese residents

    Additional file 2 of Chinese residents’ knowledge about and behavior towards dairy products: a cross-sectional study

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    Additional file 2: Table S2. Analysis of dairy intake behavior of Respondents

    Novel Highly Efficient Macrophotoinitiator Comprising Benzophenone, Coinitiator Amine, and Thio Moieties for Photopolymerization

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    To investigate the photoefficiency differences between the macrophotoinitiator and the polymerizable photoinitiator, a novel thio-containing macrophotoinitiator P(MTPBP-co-DMAEMA) bearing side-chain benzophenone and coinitiator amine was synthesized through free radical copolymerization of a polymerizable photoinitiator 4-[(4-maleimido)thiophenyl]benzophenone (MTPBP) and an unsaturated coinitiator amine N,N-dimethylaminoethyl methacrylate (DMAEMA). To determine the influences of coinitiator amine on photopolymerization, a macroamine P(DMAEMA) was also synthesized through homopolymerization of DMAEMA for comparison. FT-IR, 1H NMR, and gel permeation chromatography (GPC) analyses confirmed the structures of the two polymers. The UVāˆ’vis spectra of macrophotoinitiator P(MTPBP-co-DMAEMA) and polymerizable photoinitiator MTPBP are similar, and both exhibit high red-shifted maximum of absorption compared with benzophenone. Photopolymerization of 1,6-hexanediol diacrylate (HDDA) and trimethylolpropane triacrylate (TMPTA), initiated by benzophenone/DMAEMA, MTPBP/DMAEMA, MTPBP/P(DMAEMA), and P(MTPBP-co-DMAEMA) systems, was studied by differential scanning photocalorimetry (photo-DSC). The results indicate that P(MTPBP-co-DMAEMA) is most efficient for the polymerization of both HDDA and TMPTA. As for the photopolymerization of HDDA, the final conversion runs up to 98%. However, the photoefficiency of the MTPBP/P(DMAEMA) system, with macroamine as coinitiator, is unsatisfactory

    Management strategies for museum night opening in China: a SWOT-TOWS analysis of Shanghai museums

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    In China, the concept of Museum Night Opening, which involves keeping museums open to the public beyond regular daytime hours, has gained popularity since its inception in 2019. However, its implementation has posed both social benefits and operational challenges. This study aims to develop management strategies for Museum Night Opening in China, using a regional perspective centered on Shanghai. A systematic review of Shanghai cases spanning from 2007 to August 2023 was conducted for the development status. A SWOT-TWOS analysis was further employed for the development environment and management strategies. The internal management strategies (WO & WT) emphasize aspects such as human resources, finance, and materials to ensure smooth night operations. Meanwhile, the external management strategies (SO & ST) focus on the audience orientation and crossover collaboration to enhance nighttime experiences. Through management strategy planning, Chinese museums can establish Museum Night Opening as a high-quality initiative in a sustainable manner.</p

    Noncontact Manipulation of Intracellular Structure Based on Focused Surface Acoustic Waves

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    Cell orientation is essential in many applications in biology, medicine, and chemistry, such as cellular injection, intracellular biopsy, and genetic screening. However, the manual cell orientation technique is a trial-and-error approach, which suffers from low efficiency and low accuracy. Although several techniques have improved these issues to a certain extent, they still face problems deforming or disrupting cell membranes, physical damage to the intracellular structure, and limited particle size. This study proposes a noncontact and noninvasive cell orientation method that rotates a cell using surface acoustic waves (SAWs). To realize the acoustic cell orientation process, we have fabricated a microdevice consisting of two pairs of focused interdigital transducers (FIDTs). Instead of rotating the entire cell, the proposed method rotates the intracellular structure, the cytoplasm, directly through the cell membrane by acoustic force. We have tested the rotational manipulation process on 30 zebrafish embryos. The system was able to orientate a cell to a target orientation with a one-time success rate of 93%. Furthermore, the postoperation survival rate was 100%. Our acoustic rotational manipulation technique is noninvasive and easy to use, which provides a starting point for cell-manipulation-essential tasks, such as single-cell analysis, organism studies, and drug discovery

    Noncontact Manipulation of Intracellular Structure Based on Focused Surface Acoustic Waves

    No full text
    Cell orientation is essential in many applications in biology, medicine, and chemistry, such as cellular injection, intracellular biopsy, and genetic screening. However, the manual cell orientation technique is a trial-and-error approach, which suffers from low efficiency and low accuracy. Although several techniques have improved these issues to a certain extent, they still face problems deforming or disrupting cell membranes, physical damage to the intracellular structure, and limited particle size. This study proposes a noncontact and noninvasive cell orientation method that rotates a cell using surface acoustic waves (SAWs). To realize the acoustic cell orientation process, we have fabricated a microdevice consisting of two pairs of focused interdigital transducers (FIDTs). Instead of rotating the entire cell, the proposed method rotates the intracellular structure, the cytoplasm, directly through the cell membrane by acoustic force. We have tested the rotational manipulation process on 30 zebrafish embryos. The system was able to orientate a cell to a target orientation with a one-time success rate of 93%. Furthermore, the postoperation survival rate was 100%. Our acoustic rotational manipulation technique is noninvasive and easy to use, which provides a starting point for cell-manipulation-essential tasks, such as single-cell analysis, organism studies, and drug discovery

    Noncontact Manipulation of Intracellular Structure Based on Focused Surface Acoustic Waves

    No full text
    Cell orientation is essential in many applications in biology, medicine, and chemistry, such as cellular injection, intracellular biopsy, and genetic screening. However, the manual cell orientation technique is a trial-and-error approach, which suffers from low efficiency and low accuracy. Although several techniques have improved these issues to a certain extent, they still face problems deforming or disrupting cell membranes, physical damage to the intracellular structure, and limited particle size. This study proposes a noncontact and noninvasive cell orientation method that rotates a cell using surface acoustic waves (SAWs). To realize the acoustic cell orientation process, we have fabricated a microdevice consisting of two pairs of focused interdigital transducers (FIDTs). Instead of rotating the entire cell, the proposed method rotates the intracellular structure, the cytoplasm, directly through the cell membrane by acoustic force. We have tested the rotational manipulation process on 30 zebrafish embryos. The system was able to orientate a cell to a target orientation with a one-time success rate of 93%. Furthermore, the postoperation survival rate was 100%. Our acoustic rotational manipulation technique is noninvasive and easy to use, which provides a starting point for cell-manipulation-essential tasks, such as single-cell analysis, organism studies, and drug discovery

    Noncontact Manipulation of Intracellular Structure Based on Focused Surface Acoustic Waves

    No full text
    Cell orientation is essential in many applications in biology, medicine, and chemistry, such as cellular injection, intracellular biopsy, and genetic screening. However, the manual cell orientation technique is a trial-and-error approach, which suffers from low efficiency and low accuracy. Although several techniques have improved these issues to a certain extent, they still face problems deforming or disrupting cell membranes, physical damage to the intracellular structure, and limited particle size. This study proposes a noncontact and noninvasive cell orientation method that rotates a cell using surface acoustic waves (SAWs). To realize the acoustic cell orientation process, we have fabricated a microdevice consisting of two pairs of focused interdigital transducers (FIDTs). Instead of rotating the entire cell, the proposed method rotates the intracellular structure, the cytoplasm, directly through the cell membrane by acoustic force. We have tested the rotational manipulation process on 30 zebrafish embryos. The system was able to orientate a cell to a target orientation with a one-time success rate of 93%. Furthermore, the postoperation survival rate was 100%. Our acoustic rotational manipulation technique is noninvasive and easy to use, which provides a starting point for cell-manipulation-essential tasks, such as single-cell analysis, organism studies, and drug discovery
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