Rorippa indica is a wild oilseed crop of Brassicaceae with good environmental adaptability and strong stress resistance.This plant has become an important wild relative species for rapeseed(Brassica napus L.)and is us...Rorippa indica is a wild oilseed crop of Brassicaceae with good environmental adaptability and strong stress resistance.This plant has become an important wild relative species for rapeseed(Brassica napus L.)and is used to improve its agronomic traits,with important development and utilization value.However,the research of R.indica genetics is still lacking.And no mitochondrial genome(mitogenome)in the genus Rorippa has been expounded.To analyze the structural characteristics of the R.indica mitogenome,second-generation and third-generation sequencing techniques were made to assemble its mitogenome.The results showed that its mitogenome is composed of a single master circle DNA molecule,with 59 genes(33 protein-coding,23 tRNA,and 3 ribosomal RNA genes)annotated.The length of the circular genome is 219,775 bp,with aGCcontent of 45.24%.Themitochondrial genome contains 55 SSRs,17 tandem repeats,and 252 scattered repeat sequences,with scattered repeat sequences accounting for 77.78%.The top two codons with the highest expression levels are TTT and AUU.Moreover,377 RNA editing sites were forecasted in the R.indica mitogenome.And 22 collinear gene fragments were discriminated in the R.indica chloroplast andmitogenomes,with a total 13,153 bp length,accounting for 4.08%of the mitogenome sequence.The longest gene migration fragment is 2186 bp,and the shortest fragment is 42 bp.Furthermore,12 genes undergo complete migration between the two genomes,and 10 genes undergo partial migration.Systematic evolutionary analysis shows that R.indica and Brassica napus are grouped,indicating a close genetic relationship between the two.Herein,the R.indica mitogenome was sequenced and annotated,and it was compared with other Brassicaceae mitogenomes.A genomic data foundation was supplied for elucidating the R.indica origin and evolution.展开更多
Derris fordii and Derris elliptica belong to the Derris genus of the Fabaceae family, distinguished by their high isoflavonoid content, particularly rotenoids, which hold significance in pharmaceuticals and agricultur...Derris fordii and Derris elliptica belong to the Derris genus of the Fabaceae family, distinguished by their high isoflavonoid content, particularly rotenoids, which hold significance in pharmaceuticals and agriculture. Rotenone, as a prominent rotenoid, has a longstanding history of use in pesticides, veterinary applications, medicine, and medical research. The accumulation of rotenoids within Derris plants adheres to species-specific and tissue-specific patterns and is also influenced by environmental factors. Current research predominantly addresses extraction techniques, pharmacological applications, and pesticide formulations, whereas investigations into the biosynthesis pathway and regulatory mechanism of rotenoids remain relatively scarce. In this study, we observed notable differences in rotenone content across the roots, stems, and leaves of D. fordii, as well as within the roots of D. elliptica. Utilizing RNA sequencing (RNA-seq), we analyzed the transcriptomes and expression profiles of unigenes from these four tissues, identifying a total of 121,576 unigenes. Differentially expressed genes (DEGs) across four comparison groups demonstrated significant enrichment in the phenylpropanoid and flavonoid biosynthesis pathways. Key unigenes implicated in the rotenoid biosynthesis pathway were identified, with PAL, C4H, CHS, CHI, IFS, and HI4OMT playing critical roles in D. fordii, while IFS and HI4OMT were determined to be essential for rotenoid biosynthesis in D. elliptica. These findings enhance our understanding of the biosynthesis mechanism of rotenoids in Derris species. The unigenes identified in this study represent promising candidates for future investigations aimed at validating their roles in rotenoid biosynthesis.展开更多
The rapid development and application of emerging information technologies,such as big data and artificial intelligence,facilitates the development of intelligent urban rail vehicles.Architecture is an important compo...The rapid development and application of emerging information technologies,such as big data and artificial intelligence,facilitates the development of intelligent urban rail vehicles.Architecture is an important component of intelligent urban rail vehicles and a key factor in ensuring their reliable and safe operation on various routes.In this context,it is very important to select appropriate architecture design standards.The paper reviews the relevant design standards for architecture at home and abroad,comprehensively analyzes the standards that need to be compared and analyzed,and conducts comprehensive comparative analysis in the aspects of the scope of application,load conditions,vertical static load,lateral load,and evaluation methods of the standards.Finally,it draws a conclusion that the standard JIS E 4207:2019,Rolling stock—Bogie—General rules for design of bogie frame strength,can meet the requirements of strength design of welded bogie frame in intelligent urban rail vehicles.It proposes the suggestions on better validating this design method in future bench and line tests of products,in order to improve the design concept of bogie frame strength and provide reference and inspiration for promoting the development of intelligent urban rail vehicles in China.展开更多
This paper conducts clustering,potential semantic indexing,comparison,and inductive analysis of research papers on marketing between China and the UK from January 2020 to September 2024.The study found that the Chines...This paper conducts clustering,potential semantic indexing,comparison,and inductive analysis of research papers on marketing between China and the UK from January 2020 to September 2024.The study found that the Chinese marketing research focuses on digital transformation,policy impact,value co-creation,and emerging e-commerce models.In contrast,the UK marketing research focuses more on sustainability,technology integration,real-time research,and personalized marketing strategies.The study also found that there were few marketing articles published in Chinese and CSSCI journals in China,while the SSCI journals published in English were 62 times more than in Chinese.According to the research,digital marketing and data-driven decision-making,diversified marketing channels,sustainability and circular economy,technological innovation and cutting-edge technology application,meta-universe and blockchain technology,AI+marketing development,brand building,and international market expansion will become the research hotspots in the field of marketing in the future.The research suggests that China should strengthen the construction of an academic marketing platform,and China and the UK should strengthen cooperation in marketing research,learn from each other's strengths,and jointly give full play to their advantages in technology application,market and economy,strategy and innovation,and social media,to contribute to global economic development and marketing research.展开更多
Teacher professional identity is a comprehensive reflection of teachers’role perception,emotional experiences,and behavioral tendencies towards their profession.It serves as an intrinsic driving force for teachers’p...Teacher professional identity is a comprehensive reflection of teachers’role perception,emotional experiences,and behavioral tendencies towards their profession.It serves as an intrinsic driving force for teachers’professional development and is also a crucial issue in teacher education research.From a global perspective,this study systematically reviews and examines relevant research on the professional identity of international Chinese language teachers(ICLTs).A comparative analysis is conducted between Chinese and foreign scholars’research in terms of theoretical foundations,research subjects,research content,and research methodologies.This comprehensive overview of the current research landscape in this field,along with a summary of existing achievements and identified problems,facilitates the transformation of fragmented research findings on ICLTs’professional identity into a systematic understanding and reveals research gaps.Building upon this foundation,the study proposes future research prospects for the professional identity of ICLTs from aspects such as the construction of a cross-cultural perspective-based teacher professional identity system,the transformation of teacher professional identity in the context of digital transformation,and case studies on ICLTs’professional identity.The aim is to promote high-quality development in both theory and practice of international Chinese language education.展开更多
This paper conducted a more comprehensive review and comparative analysis of the two heavy to blizzard processes that occurred in the Beijing area during December 13-15,2023,and February 20-21,2024,in terms of compreh...This paper conducted a more comprehensive review and comparative analysis of the two heavy to blizzard processes that occurred in the Beijing area during December 13-15,2023,and February 20-21,2024,in terms of comprehensive weather situation diagnosis,forecasting,and decision-making services,and summarized the meteorological service support experience of such heavy snow weather processes.It was found that both blizzard processes were jointly influenced by the 700 hPa southwesterly warm and humid jet stream and the near-surface easterly backflow;the numerical forecast was relatively accurate in the overall description of the snowfall process,and the forecast bias of the position of the 700 hPa southwesterly warm and humid jet stream determined the bias of the snowfall magnitude forecast at a certain point;when a deviation was found between the actual snowfall and the forecast,the cause should be analyzed in a timely manner,and the warning and forecast conclusions should be updated.With the full cooperation of relevant departments,it can greatly make up for the deviation of the early forecast snowfall amount,and ensure the safety and efficiency of people's travel.展开更多
The high intraspecies heterogeneity of Baciillus coagulans leads to significant phenotypic differences among different strains.Thus,6 B.coagulans strains were tested in the present study using an irritable bowel syndr...The high intraspecies heterogeneity of Baciillus coagulans leads to significant phenotypic differences among different strains.Thus,6 B.coagulans strains were tested in the present study using an irritable bowel syndrome(IBS)animal model to determine whether the IBS-alleviating effects of B.coagulans strains are strain-specific.The results of this study showed that the ingestion of B.coagulans GBI-30,6086,and B.coagulans CCFM1041 significantly alleviated IBS symptoms in mice.In contrast,other B.coagulans strains showed no or limited alleviating effects on IBS symptoms.According to our experimental results,the two main common features of these strains were as follows:1)The resistance of vegetative cells to bile salts,and 2)ability to synthesize specific lipids and secondary metabolites.Screening strains based on these two indicators may greatly reduce costs and provide a basis for mining new functional B.coagulans strains.Our results also suggest that administration of B.coagulans could significantly regulate microbiota dysbiosis in animal models.Moreover,the close relationships between the gut microbiota,gut microbiota metabolites,and IBS were further confirmed in this study.展开更多
This research paper compares Excel and R language for data analysis and concludes that R language is more suitable for complex data analysis tasks.R language’s open-source nature makes it accessible to everyone,and i...This research paper compares Excel and R language for data analysis and concludes that R language is more suitable for complex data analysis tasks.R language’s open-source nature makes it accessible to everyone,and its powerful data management and analysis tools make it suitable for handling complex data analysis tasks.It is also highly customizable,allowing users to create custom functions and packages to meet their specific needs.Additionally,R language provides high reproducibility,making it easy to replicate and verify research results,and it has excellent collaboration capabilities,enabling multiple users to work on the same project simultaneously.These advantages make R language a more suitable choice for complex data analysis tasks,particularly in scientific research and business applications.The findings of this study will help people understand that R is not just a language that can handle more data than Excel and demonstrate that r is essential to the field of data analysis.At the same time,it will also help users and organizations make informed decisions regarding their data analysis needs and software preferences.展开更多
This paper examines the challenges of achieving high IELTS Speaking scores,particularly due to preparation constraints and subjectivity in assessment.It contrasts speaking features of high and low scorers across four ...This paper examines the challenges of achieving high IELTS Speaking scores,particularly due to preparation constraints and subjectivity in assessment.It contrasts speaking features of high and low scorers across four key areas:fluency and coherence,lexical resource,grammatical range and accuracy,and pronunciation.The study offers strategies for improvement,focusing on topic development,vocabulary,and grammar,aiming to enhance candidates’performance.展开更多
基金supported by the Jiangxi Province Higher Education Teaching Research Project(JXJG-22-23-3,NSJG-21-25)Jiangxi Province Key Laboratory of Oil Crops Biology(YLKFKT202203).
文摘Rorippa indica is a wild oilseed crop of Brassicaceae with good environmental adaptability and strong stress resistance.This plant has become an important wild relative species for rapeseed(Brassica napus L.)and is used to improve its agronomic traits,with important development and utilization value.However,the research of R.indica genetics is still lacking.And no mitochondrial genome(mitogenome)in the genus Rorippa has been expounded.To analyze the structural characteristics of the R.indica mitogenome,second-generation and third-generation sequencing techniques were made to assemble its mitogenome.The results showed that its mitogenome is composed of a single master circle DNA molecule,with 59 genes(33 protein-coding,23 tRNA,and 3 ribosomal RNA genes)annotated.The length of the circular genome is 219,775 bp,with aGCcontent of 45.24%.Themitochondrial genome contains 55 SSRs,17 tandem repeats,and 252 scattered repeat sequences,with scattered repeat sequences accounting for 77.78%.The top two codons with the highest expression levels are TTT and AUU.Moreover,377 RNA editing sites were forecasted in the R.indica mitogenome.And 22 collinear gene fragments were discriminated in the R.indica chloroplast andmitogenomes,with a total 13,153 bp length,accounting for 4.08%of the mitogenome sequence.The longest gene migration fragment is 2186 bp,and the shortest fragment is 42 bp.Furthermore,12 genes undergo complete migration between the two genomes,and 10 genes undergo partial migration.Systematic evolutionary analysis shows that R.indica and Brassica napus are grouped,indicating a close genetic relationship between the two.Herein,the R.indica mitogenome was sequenced and annotated,and it was compared with other Brassicaceae mitogenomes.A genomic data foundation was supplied for elucidating the R.indica origin and evolution.
基金Guangxi Science and Technology Base and Talent Special Fund,Project No.AD21220130Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain,Project No.20-065-7Guangxi Institute of Botany Fund,Project No.21014.
文摘Derris fordii and Derris elliptica belong to the Derris genus of the Fabaceae family, distinguished by their high isoflavonoid content, particularly rotenoids, which hold significance in pharmaceuticals and agriculture. Rotenone, as a prominent rotenoid, has a longstanding history of use in pesticides, veterinary applications, medicine, and medical research. The accumulation of rotenoids within Derris plants adheres to species-specific and tissue-specific patterns and is also influenced by environmental factors. Current research predominantly addresses extraction techniques, pharmacological applications, and pesticide formulations, whereas investigations into the biosynthesis pathway and regulatory mechanism of rotenoids remain relatively scarce. In this study, we observed notable differences in rotenone content across the roots, stems, and leaves of D. fordii, as well as within the roots of D. elliptica. Utilizing RNA sequencing (RNA-seq), we analyzed the transcriptomes and expression profiles of unigenes from these four tissues, identifying a total of 121,576 unigenes. Differentially expressed genes (DEGs) across four comparison groups demonstrated significant enrichment in the phenylpropanoid and flavonoid biosynthesis pathways. Key unigenes implicated in the rotenoid biosynthesis pathway were identified, with PAL, C4H, CHS, CHI, IFS, and HI4OMT playing critical roles in D. fordii, while IFS and HI4OMT were determined to be essential for rotenoid biosynthesis in D. elliptica. These findings enhance our understanding of the biosynthesis mechanism of rotenoids in Derris species. The unigenes identified in this study represent promising candidates for future investigations aimed at validating their roles in rotenoid biosynthesis.
文摘The rapid development and application of emerging information technologies,such as big data and artificial intelligence,facilitates the development of intelligent urban rail vehicles.Architecture is an important component of intelligent urban rail vehicles and a key factor in ensuring their reliable and safe operation on various routes.In this context,it is very important to select appropriate architecture design standards.The paper reviews the relevant design standards for architecture at home and abroad,comprehensively analyzes the standards that need to be compared and analyzed,and conducts comprehensive comparative analysis in the aspects of the scope of application,load conditions,vertical static load,lateral load,and evaluation methods of the standards.Finally,it draws a conclusion that the standard JIS E 4207:2019,Rolling stock—Bogie—General rules for design of bogie frame strength,can meet the requirements of strength design of welded bogie frame in intelligent urban rail vehicles.It proposes the suggestions on better validating this design method in future bench and line tests of products,in order to improve the design concept of bogie frame strength and provide reference and inspiration for promoting the development of intelligent urban rail vehicles in China.
文摘This paper conducts clustering,potential semantic indexing,comparison,and inductive analysis of research papers on marketing between China and the UK from January 2020 to September 2024.The study found that the Chinese marketing research focuses on digital transformation,policy impact,value co-creation,and emerging e-commerce models.In contrast,the UK marketing research focuses more on sustainability,technology integration,real-time research,and personalized marketing strategies.The study also found that there were few marketing articles published in Chinese and CSSCI journals in China,while the SSCI journals published in English were 62 times more than in Chinese.According to the research,digital marketing and data-driven decision-making,diversified marketing channels,sustainability and circular economy,technological innovation and cutting-edge technology application,meta-universe and blockchain technology,AI+marketing development,brand building,and international market expansion will become the research hotspots in the field of marketing in the future.The research suggests that China should strengthen the construction of an academic marketing platform,and China and the UK should strengthen cooperation in marketing research,learn from each other's strengths,and jointly give full play to their advantages in technology application,market and economy,strategy and innovation,and social media,to contribute to global economic development and marketing research.
文摘Teacher professional identity is a comprehensive reflection of teachers’role perception,emotional experiences,and behavioral tendencies towards their profession.It serves as an intrinsic driving force for teachers’professional development and is also a crucial issue in teacher education research.From a global perspective,this study systematically reviews and examines relevant research on the professional identity of international Chinese language teachers(ICLTs).A comparative analysis is conducted between Chinese and foreign scholars’research in terms of theoretical foundations,research subjects,research content,and research methodologies.This comprehensive overview of the current research landscape in this field,along with a summary of existing achievements and identified problems,facilitates the transformation of fragmented research findings on ICLTs’professional identity into a systematic understanding and reveals research gaps.Building upon this foundation,the study proposes future research prospects for the professional identity of ICLTs from aspects such as the construction of a cross-cultural perspective-based teacher professional identity system,the transformation of teacher professional identity in the context of digital transformation,and case studies on ICLTs’professional identity.The aim is to promote high-quality development in both theory and practice of international Chinese language education.
文摘This paper conducted a more comprehensive review and comparative analysis of the two heavy to blizzard processes that occurred in the Beijing area during December 13-15,2023,and February 20-21,2024,in terms of comprehensive weather situation diagnosis,forecasting,and decision-making services,and summarized the meteorological service support experience of such heavy snow weather processes.It was found that both blizzard processes were jointly influenced by the 700 hPa southwesterly warm and humid jet stream and the near-surface easterly backflow;the numerical forecast was relatively accurate in the overall description of the snowfall process,and the forecast bias of the position of the 700 hPa southwesterly warm and humid jet stream determined the bias of the snowfall magnitude forecast at a certain point;when a deviation was found between the actual snowfall and the forecast,the cause should be analyzed in a timely manner,and the warning and forecast conclusions should be updated.With the full cooperation of relevant departments,it can greatly make up for the deviation of the early forecast snowfall amount,and ensure the safety and efficiency of people's travel.
基金supported by the Natural Science Foundation of Jiangsu Province(BK20200084)the National Natural Science Foundation of China(31871773 and 31820103010)+1 种基金the Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province and Key Talents Project of“Strengthening Health through Science and Education”of Wuxi Health and Family Planning Commission(ZDRC039)Top Talents Project of“Six-one Project”for High-level Health Talents in Jiangsu Province(LGY2018016)。
文摘The high intraspecies heterogeneity of Baciillus coagulans leads to significant phenotypic differences among different strains.Thus,6 B.coagulans strains were tested in the present study using an irritable bowel syndrome(IBS)animal model to determine whether the IBS-alleviating effects of B.coagulans strains are strain-specific.The results of this study showed that the ingestion of B.coagulans GBI-30,6086,and B.coagulans CCFM1041 significantly alleviated IBS symptoms in mice.In contrast,other B.coagulans strains showed no or limited alleviating effects on IBS symptoms.According to our experimental results,the two main common features of these strains were as follows:1)The resistance of vegetative cells to bile salts,and 2)ability to synthesize specific lipids and secondary metabolites.Screening strains based on these two indicators may greatly reduce costs and provide a basis for mining new functional B.coagulans strains.Our results also suggest that administration of B.coagulans could significantly regulate microbiota dysbiosis in animal models.Moreover,the close relationships between the gut microbiota,gut microbiota metabolites,and IBS were further confirmed in this study.
文摘This research paper compares Excel and R language for data analysis and concludes that R language is more suitable for complex data analysis tasks.R language’s open-source nature makes it accessible to everyone,and its powerful data management and analysis tools make it suitable for handling complex data analysis tasks.It is also highly customizable,allowing users to create custom functions and packages to meet their specific needs.Additionally,R language provides high reproducibility,making it easy to replicate and verify research results,and it has excellent collaboration capabilities,enabling multiple users to work on the same project simultaneously.These advantages make R language a more suitable choice for complex data analysis tasks,particularly in scientific research and business applications.The findings of this study will help people understand that R is not just a language that can handle more data than Excel and demonstrate that r is essential to the field of data analysis.At the same time,it will also help users and organizations make informed decisions regarding their data analysis needs and software preferences.
文摘This paper examines the challenges of achieving high IELTS Speaking scores,particularly due to preparation constraints and subjectivity in assessment.It contrasts speaking features of high and low scorers across four key areas:fluency and coherence,lexical resource,grammatical range and accuracy,and pronunciation.The study offers strategies for improvement,focusing on topic development,vocabulary,and grammar,aiming to enhance candidates’performance.
