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Early development,life history and ecological habits of Grateloupia constricata Li et Ding 被引量:1
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作者 Yuanyuan Ding yao bian +3 位作者 Huina Wang Jing Liu Jingrui Li Hongwei Wang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2020年第10期155-161,共7页
As the largest genus of Halymeniaceae,Grateloupia has been widely reported.Here,we observed the life history and early development of Grateloupia constricata Li et Ding and investigated the effects of temperature,irra... As the largest genus of Halymeniaceae,Grateloupia has been widely reported.Here,we observed the life history and early development of Grateloupia constricata Li et Ding and investigated the effects of temperature,irradiance,and photoperiod on the discoid crust and sporeling development of G.constricata under laboratory conditions.We observed that the type of carpospore development was“mediate discal type”.The life history included homotypic gametophyte(haploid),carposporophyte(diploid),and tetrasporophyte(diploid),with typical isomorphic alternation of generations.The results of double factorial analysis showed that both single factorial effects and interaction among temperature,photoperiod,and irradiance were obviously significant on the discoid crust and sporeling development.Furthermore,we found that the optimum combination of condition for the early growth and development of G.constricata was temperature 20°C,irradiance 80μmol photons/(m^2·s)and photoperiod 16L:8D.This study provides the theoretical basis and technical support for the conservation of the Grateloupia germplasm,artificial breeding,large-scale cultivation and sustainable development. 展开更多
关键词 carpospore life history alternation of generations TEMPERATURE IRRADIANCE PHOTOPERIOD
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Psychological experience of infected individuals during the pandemic: A qualitative meta-synthesis
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作者 yao bian Haobin YUAN Wipada KUNAVIKTIKUL 《Journal of Integrative Nursing》 2022年第2期83-90,共8页
The purpose of this review is to integrate the psychological experience of infected individuals during the pandemic.The spread of the pandemic has led to psychological and emotional impacts on patients.A qualitative s... The purpose of this review is to integrate the psychological experience of infected individuals during the pandemic.The spread of the pandemic has led to psychological and emotional impacts on patients.A qualitative synthesis is needed to identify,appraise,and integrate the available qualitative findings to provide an evidence for the development of interventions.A meta-aggregation approach was used to analyze studies published in English from January 2020 to August 2021.The JBI Qualitative Assessment and Review Instrument was used to assess the methodological quality of included studies.The ConQual system was used to establish the dependability and credibility in the synthesized findings.Six phenomenological studies and one narrative inquiry with an overall quality score of 70%-100% were included.The research findings from 87 participants in eligible studies were aggregated into three categories based on similarity of meaning.Two synthesized findings were generated and rated as moderate based on the ConQual score.The synthesized findings suggested that participants had psychological distress such as fear,anxiety,loneliness,and uncertainty,but they accepted the fact of being infected and tried to adjust themselves using some self-coping strategies,such as diverting attention from disease,seeking help from professional counselors,relying on religious beliefs,and participating in religious activities.They would like to learn more about infections and diseases and needed more informational support from health-care professionals.They were looking forward to recovery from the disease. 展开更多
关键词 COVID-19 META-SYNTHESIS PANDEMIC psychological experience qualitative study
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MnFe_(2)O_(4)-还原氧化石墨烯活化过硫酸氢钾降解罗丹明B
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作者 王欣 姚变 +2 位作者 程浩 乔旭 吴丹 《沈阳化工大学学报》 CAS 2022年第6期513-518,共6页
通过制备MnFe_(2)O_(4)-还原氧化石墨烯(RGO)复合活性剂,活化过硫酸氢钾降解罗丹明B(RhB).考察了pH、温度、过硫酸氢钾浓度、MnFe_(2)O_(4)-RGO投加量等要素对降解效率的影响规律.结果表明:RGO掺杂质量分数为7%的MnFe_(2)O_(4)-RGO催化... 通过制备MnFe_(2)O_(4)-还原氧化石墨烯(RGO)复合活性剂,活化过硫酸氢钾降解罗丹明B(RhB).考察了pH、温度、过硫酸氢钾浓度、MnFe_(2)O_(4)-RGO投加量等要素对降解效率的影响规律.结果表明:RGO掺杂质量分数为7%的MnFe_(2)O_(4)-RGO催化剂在25℃、pH=7、n(RhB)∶n(KHSO_(5))=1∶15、MnFe_(2)O_(4)-RGO的投加量为0.25 g/L的条件下对RhB的降解率达95%,降解反应活化能为30.39 kJ/mol.MnFe_(2)O_(4)-RGO降解效果远高于单独MnFe_(2)O_(4),这是由于RGO促进了MnFe_(2)O_(4)的分散,并为降解RhB提供了更多的反应活性位点.MnFe_(2)O_(4)-RGO重复使用5次后对RhB的降解率仍能保持在90%以上. 展开更多
关键词 MnFe_(2)O_(4)-RGO 过硫酸氢钾 硫酸根自由基 罗丹明B
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