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Rungarune Saymung,Anyarat Watthanaphanit,Nagahiro Saito,Nisanart Traiphol,Rakchart Traiphol 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
A new route for synthesizing polydiacetylene (PDA) is introduced. Plasma is generated in a liquid matrixthrough a pair of electrodes, producing the excited atomic or molecular species, radicals, and UV radiation. The products of solution plasma process (SPP) act as initiators to induce polymerization of diacetylenemonomers. Our results demonstrate that irreversible thermochromic PDA and reversiblethermochromic PDA/Zn2+/ZnO nanocomposite can be effectively synthesized. The addition of ethanol significantlyincreases the polymerization rate. These PDA materials can be fabricated into paper-based colorimetricsensors for detecting volatile organic solvents, acids, bases, and surfactants. This syntheticpathway could be applied for industrial-scale applications.
Supakorn Seetha,Rungarune Saymung,Rakchart Traiphol,Nisanart Traiphol 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.72 No.-
Polydiacetylene/zinc(II) ion/zinc oxide (PDA/Zn2+/ZnO) nanocomposite exhibits reversible thermochromismand dual colorimetric response to acid/base. This contribution presents our ongoingdevelopment of the PDA/Zn2+/ZnO nanocomposite for sensing applications by controlling ZnO surfacecharge and dissociation of PDA headgroup via pH adjustment. At pH >10, negative ZnO surface charge andPDA carboxylate headgroup significantly enhance molecular organization during the self-assemblingprocess. An increase of the nanocomposite amount after photopolymerization is observed. Oppositely,pH <6 results in irreversible-thermochromic nanocomposites. Additionally, the nanocompositesprepared at different pH change color at different concentrations of chemical stimuli. Molecularpacking, local interactions and PDA conformation are investigated.
Tidarat Puranachaikere,Somboon Hataiyusuk,Rungarun Anupansupsai,Supinya In-iw,Nattha Saisavoey,Tanawat Techapanuwat,Fasinee Arunrodpanya,Chanchai Charonpongsuntorn,Pakawat Wiwattanaworaset,Areerat Sir 한국의학교육학회 2021 Korean journal of medical education Vol.33 No.3
Purpose: The coronavirus disease 2019 (COVID-19) pandemic is a global health crisis that has impacted daily life due to the policies created to contain the outbreak. Recent studies showed that medical students, a high-stress population, experienced deteriorated mental well-being during the pandemic. The aim of the present study was to assess stress and the need for support among Thai medical students during the COVID-19 pandemic, as a multicenter study.Methods: The present study was a cross-sectional questionnaire-based study which collected data from second through sixth year medical students. Data was collected during the pandemic from multiple medical schools spanning all six regions of Thailand. Questionnaires included: demographic data; the Thai version of the Perceived Stress Scale-10 (T-PSS-10) assessing stress level and the sources of stress; and the received supports from medical schools, the satisfaction with the supports, and the further necessary needs.Results: There were 1,395 medical students who responded to the questionnaires. Mean T-PSS-10 score was 17.8. Most of the sources of stress were related to the changing of teaching and evaluation system. Students residing in larger medical schools were significantly more satisfied with received support and tended to gain greater support than those in medium and small sized schools. Stress-relieving activities arrangement was considered the most sought after additional support by students.Conclusion: Medical student stress levels were higher during the pandemic compared to pre-pandemic levels. Stress relieving activities, availability and access to mental health resources, and other strategies to reduce stress among medical students are urgently needed.
Cosmetic Outcomes and Quality of Life in Thai Women Post Breast Conserving Therapy for Breast Cancer
Thanarpan, Peerawong,Somrit, Mahattanobon,Rungarun, Jiratrachu,Paytai, Rordlamool,Duangjai, Sangtawan,Chanon, Kongkamol,Puttisak, Puttawibul Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.11
Purpose: To evaluate the correlation between cosmetic outcome (CO), body image, and quality of life in post breast-conserving therapy (BCT) women. Materials and Methods: This cross-sectional study concerned one-year post-completed BCT Thai women. The data included subjective and objective CO with a questionnaire covering demographic and clinical data, anti-hormonal treatment status, Eastern Cooperative Oncology Group (ECOG) performance status, Self-Reported Cosmetic Outcomes (SRCO), Self-Reported Breast Symmetry (SRBS), Body Image Scale (BIS), and the Functional Assessment of Cancer Therapy with Breast Cancer subscale (FACT-B). Participants had breast photographs taken for the evaluation of objective cosmetic outcome (OCO) after breast cancer conservation treatment. The relationship between CO and FACT-B was tested using Spearman's rank correlation Results: A total 127 participants volunteered for the study. The participant characteristics were age 52(${\pm}9$), Buddhist 87%, married 65%, body mass index 25.0(${\pm}4.6$), breast cup size A-C 91%, college educated 60%, employed 66%, ECOG 0-1 95%, tumor size less than or equal to 2 cm 55%, no lymph node metastasis 98%, and taking tamoxifen 57%. Two percent of the participants regretted their decision to undergo BCT. The SRCO was excellent in 2%, good in 68%, fair in 30%, and poor in 0%. For SRBS, rates were 17%, 58%, 24% and 1% for excellent, good, fair and poor cosmetic outcomes, respectively. The BCCT scores were excellent 24%, good 39%, fair 32%, and poor 6%. The median total QOL score of the participants was 130 (93-144). There was no significant correlation between CO and FACT-B scores. Conclusions: The significance of CO for FACT-B in Thai women with breast cancer could not be assessed in detail because of a very low level of correlation. The results may be due to the effects of cultural background.