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Impacts of information about COVID-19 on pig farmers'production willingness and behavior:Evidence from China
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作者 Huan Chen Lei Mao yuehua zhang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第4期1429-1441,共13页
This paper examines the impacts of information about COVID-19 on pig farmers'production willingness by using endorsement experiments and follow-up surveys conducted in 2020 and 2021 in China.Our results show that,... This paper examines the impacts of information about COVID-19 on pig farmers'production willingness by using endorsement experiments and follow-up surveys conducted in 2020 and 2021 in China.Our results show that,first,farmers were less willing to scale up production when they received information about COVID-19.The information in 2020 that the second wave of COVID-19 might occur without a vaccine reduced farmers'willingness to scale up by 13.4%,while the information in 2021 that COVID-19 might continue to spread despite the introduction of vaccine reduced farmers'willingness by 4.4%.Second,farmers whose production was affected by COVID-19 were considerably less willing to scale up,given the access to COVID-19 information.Third,farmers'production willingness can predict their actual production behavior. 展开更多
关键词 COVID-19 randomized experiment information treatment production willingness
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“翻转课堂+混合式”教学模式在物理化学实验课程中的探索与实施 被引量:4
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作者 贾雪平 丁津津 +4 位作者 朱玥 缪建文 葛存旺 张跃华 葛明 《大学化学》 CAS 2023年第1期56-64,共9页
在前期混合式教学改革的基础上,将翻转课堂应用于物理化学实验教学中。教学过程包括:课前在线学习、线下课堂展示、讨论与实验操作,以及课后巩固与提高。采用定量研究和问卷调查验证了这种教学模式的有效性。研究结果表明,这种教学模式... 在前期混合式教学改革的基础上,将翻转课堂应用于物理化学实验教学中。教学过程包括:课前在线学习、线下课堂展示、讨论与实验操作,以及课后巩固与提高。采用定量研究和问卷调查验证了这种教学模式的有效性。研究结果表明,这种教学模式有助于提高学生的学习成绩,培养学习自主性,激发学习热情,提高课堂参与度。 展开更多
关键词 物理化学实验 翻转课堂 混合式教学
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基于SPOC和慕课堂的物理化学实验混合式教学改革实践 被引量:14
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作者 贾雪平 葛明 +2 位作者 张跃华 缪建文 葛存旺 《大学化学》 CAS 2021年第7期200-208,共9页
为了提高物理化学实验的教学效果,拍摄制作了物理化学实验原理和操作视频,并基于爱课程(中国大学MOOC)平台的SPOC和慕课堂,开展了线上线下混合式教学。实践证明,混合式教学提高了学生的积极性,提升了学习效果,增加了师生之间的互动,可... 为了提高物理化学实验的教学效果,拍摄制作了物理化学实验原理和操作视频,并基于爱课程(中国大学MOOC)平台的SPOC和慕课堂,开展了线上线下混合式教学。实践证明,混合式教学提高了学生的积极性,提升了学习效果,增加了师生之间的互动,可以进一步培养学生的综合能力,激发学生的创新思维。 展开更多
关键词 物理化学实验 SPOC 慕课堂 混合式教学
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Long noncoding RNA LINC01124 activates hepatocellular carcinoma cell proliferation, migration, and invasion by absorbing microRNA-1247-5p and overexpressing FOXO3
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作者 LEI SUN YUE zhang +3 位作者 YUQIN YAO HONGLIN DU yuehua zhang AIPING FANG 《Oncology Research》 SCIE 2021年第3期175-187,共13页
Long intergenic non-protein coding RNA 1124(LINC01124)has been identified as an important regulator of non-small-cell lung cancer.However,the expression and detailed role of LINC01124 in hepatocellular carcinoma(HCC)r... Long intergenic non-protein coding RNA 1124(LINC01124)has been identified as an important regulator of non-small-cell lung cancer.However,the expression and detailed role of LINC01124 in hepatocellular carcinoma(HCC)remain unestablished to date.Therefore,this study aimed to elucidate the role of LINC01124 in the aggressiveness of HCC cells and identify the underlying regulatory mechanism.Quantitative reverse transcriptase-polymerase chain reaction was performed to measure the expression of LINC01124 in HCC.Cell Counting Kit-8 assay,Transwell cell migration and invasion assays,and a xenograft tumor model were used to investigate the function of LINC01124 in HCC cells,and bioinformatics analysis,RNA immunoprecipitation,luciferase reporter assay,and rescue experiments were used to elucidate the underlying mechanisms.Herein,LINC01124 overexpression was confirmed in HCC tissues as well as cell lines.Further,the downregulation of LINC01124 decreased HCC cell proliferation,migration,and invasion in vitro,whereas the upregulation of LINC01124 triggered the opposite results.Additionally,LINC01124 ablation impaired tumor growth in vivo.Mechanistic analyses revealed that LINC01124 functions as a competing endogenous RNA to sponge microRNA-1247-5p(miR-1247-5p)in HCC cells.Moreover,forkhead box O3(FOXO3)was identified as a direct target of miR-1247-5p.FOXO3 was positively regulated by LINC01124 in HCC cells through the sequestration of miR-1247-5p.Finally,rescue assays revealed that the inhibition of miR-1247-5p or overexpression of FOXO3 reversed the effects of LINC01124 silencing on the HCC cell malignant phenotype.In summary,LINC01124 plays a tumor-promoting role in HCC by regulating the miR-1247-5p-FOXO3 axis.The LINC01124-miR-1247-5p-FOXO3 pathway may provide a foundation for the identification of alternative therapies for HCC. 展开更多
关键词 HCC Competing endogenous RNA theory Anticancer treatments
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Research on the Construction of Safety Guarantee System for Police Technical and Tactical Training in Public Security Colleg
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作者 yuehua zhang Ping Wang 《Journal of Educational Theory and Management》 2019年第1期17-21,共5页
The security system for police technical and tactical training in public security colleges in China is mainly composed of seven security guarantee systems: management organization, safety education, laws and regulatio... The security system for police technical and tactical training in public security colleges in China is mainly composed of seven security guarantee systems: management organization, safety education, laws and regulations, training control, site equipment, safety supervision and emergency plan, scienti??cally and rationally constructing a security system in relevant public security colleges. This paper has carried out a comprehensive research on Hebei Vocational College of Public Security Police, and provided corresponding safety theory and guarantee for the security protection of the college during the police training period. 展开更多
关键词 PUBLIC SECURITY COLLEGES POLICE TECHNICAL and tactical TRAINING SECURITY system
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苯并噻唑酮类热活化延迟荧光材料的合成及其光电性能研究
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作者 张越华 聂飞 +5 位作者 周路 王晓烽 刘源 霍延平 陈文铖 赵祖金 《有机化学》 SCIE CAS CSCD 北大核心 2023年第11期3876-3887,共12页
以苯并噻唑-2-基(苯基)甲酮作为受体,具有强给电子能力的吩噁嗪和吩噻嗪作为给体构筑给体-受体(D-A)型分子,设计合成了两种具有聚集诱导发光(AIE)特性的热活化延迟荧光(TADF)红光材料3和4,并对它们的热稳定性、电化学性质、单晶结构、... 以苯并噻唑-2-基(苯基)甲酮作为受体,具有强给电子能力的吩噁嗪和吩噻嗪作为给体构筑给体-受体(D-A)型分子,设计合成了两种具有聚集诱导发光(AIE)特性的热活化延迟荧光(TADF)红光材料3和4,并对它们的热稳定性、电化学性质、单晶结构、光物理性质和电致发光性能进行了系统研究.两种化合物具有较小的单三线态能级差(ΔEST,0.04和0.16 eV)以及微秒级延迟寿命(0.63和1.30μs),表现出明显的TADF特性.通过对比化合物在粉末状态下研磨前后的发射光谱,发现化合物4具有明显的力致变色发光现象.在纯薄膜下,两种化合物的发射峰分别为683和654 nm,光致发光量子产率(PLQY)分别为0.8%和3.6%.基于化合物3和4的非掺杂有机发光二极管(OLED)器件,均获得了纯红光发射(662和652 nm),器件的最大外量子效率(EQE)分别为0.15%和0.34%.虽然基于这两种化合物的器件发光效率有待提升,但它们的合成过程简便,能为开发苯并噻唑酮类TADF红光材料提供一定的启发. 展开更多
关键词 聚集诱导发光(AIE)特性 热活化延迟荧光(TADF)红光材料 力致变色发光 苯并噻唑酮类
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All-in-one functional supramolecular nanoparticles based on pillar[5]arene for controlled generation,storage and release of singlet oxygen
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作者 Bing Lu Zhecheng zhang +6 位作者 Meiyu Qi yuehua zhang Hualing Yang Jin Wang Yue Ding Yang Wang Yong Yao 《Frontiers of Chemical Science and Engineering》 SCIE EI CSCD 2023年第3期307-313,共7页
The storage and controlled release of singlet oxygen(^(1)O_(2))have attracted increasing attention due to the wide application and microsecond lifetime of^(1)O_(2)in water.Herein we provide an integrated nanoplatform ... The storage and controlled release of singlet oxygen(^(1)O_(2))have attracted increasing attention due to the wide application and microsecond lifetime of^(1)O_(2)in water.Herein we provide an integrated nanoplatform consisting of a diphenylanthracene derivative,a water-soluble pillar[5]arene and a photosensitizer tetrakis(4-hydroxyphenyl)porphyrin(TPP),that may provide the controlled generation,storage and release of singlet oxygen.We design a new diphenylanthracene derivative with two trimethylammonium bromide groups on both ends that can be well recognized by the pillar[5]arene.The formed nanocarriers can be used to load TPP through their supramolecular self-assembly.The resulting nanoparticles show good water-solubility and uniform spherical morphology.After laser irradiation(660 nm),the nanoparticles exhibit excellent ability for the generation and storage of^(1)O_(2).When the irradiated nanoparticles are heated above 80°C,^(1)O_(2)can be released from the system.Therefore,in this paper we pioneer the use of noncovalent interaction to integrate the diphenylanthracene derivatives and photosensitizers into one functional system,which provides a new strategy for the controlled generation,storage and release of singlet oxygen.We believe this groundbreaking strategy will have a great potential in providing necessary amounts of^(1)O_(2)for the photodynamic therapy of tumors in dark. 展开更多
关键词 storage and controlled release of singlet oxygen supramolecular nanoparticles noncovalent interactions pillararenes diphenylanthracene PHOTOSENSITIZERS
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Effective treatment of NR2F1-related epilepsy with perampanel
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作者 Xiao Li Kai Gao +3 位作者 Yutang Li yuehua zhang Han zhang Yuwu Jiang 《Acta Epileptologica》 2023年第4期238-255,共18页
Background NR2F1 mutations are associated with Bosch-Boonstra-Schaaf optic atrophy syndrome(BBSOAS).Although~46.7%of BBSOAS patients present with epilepsy,which is always drug-resistant and associated with higher rate... Background NR2F1 mutations are associated with Bosch-Boonstra-Schaaf optic atrophy syndrome(BBSOAS).Although~46.7%of BBSOAS patients present with epilepsy,which is always drug-resistant and associated with higher rates of behavioral and cognitive problems,the treatment and outcomes of NR2F1-related epilepsy have rarely been described.Here,we present new cases of BBSOAS-related epilepsy and summarize all previously reported cases to explore the effective treatment for this type of epilepsy.Methods We identified six new Chinese cases of BBSOAS with epilepsy.Five different de novo heterozygous NR2F1 mutations were identified in these cases,including two novel mutations c.365G>T,p.Cys122Phe and c.449G>T,p.Gly150Val.By combining the six cases and 14 previously reported cases,we analyzed the characteristics and treatment outcomes of NR2F1-related epilepsy.Results Twelve of the 20 patients(60%)had infantile epileptic spasms,while the other patients had generalized tonic/tonic-clonic,focal,myoclonic,absence,or unclassified seizures.Several anti-seizure medications,steroids,and a ketogenic diet were administered in these cases.However,seizures were controlled in only 50%of previously reported cases,while all of the six new cases became seizure-free after perampanel as an add-on treatment.The average time from the addition of perampanel to seizure control was 7.33±4.59 months(range,1–12 months).The median time to seizure freedom was 14 months(1–32 months,>19 months in 3 cases).The average dosage of perampanel needed for epilepsy control was 0.22±0.17 mg/kg per day.Conclusions In this paper,we comprehensively summarized the clinical characteristics,treatments and outcomes of NR2F1-related epilepsy for the first time.Perampanel exhibits dramatic efficacy for NR2F1-related epilepsy.This will help optimize the treatment of this type of epilepsy and provide clues for its pathogenic mechanisms.The two novel mutations expand the genotype spectrum of this disease. 展开更多
关键词 NR2F1 EPILEPSY Bosch-Boonstra-Schaaf optic atrophy syndrome PERAMPANEL Infantile spasm
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儿童髓鞘少突胶质细胞糖蛋白抗体相关疾病临床随访 被引量:3
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作者 滕新岭 张捷 +6 位作者 常旭婷 李尚茹 周季 张月华 包新华 姜玉武 吴晔 《中华儿科杂志》 CAS CSCD 北大核心 2021年第12期1048-1054,共7页
目的总结髓鞘少突胶质细胞糖蛋白抗体相关疾病(MOGAD)临床特点,比较不同疾病修正治疗药物的疗效差异。方法采用双向队列研究,收集2012年1月至2021年3月在北京大学第一医院儿科诊断为MOGAD的42例患儿,进行长期随访,分析其临床表型,并比... 目的总结髓鞘少突胶质细胞糖蛋白抗体相关疾病(MOGAD)临床特点,比较不同疾病修正治疗药物的疗效差异。方法采用双向队列研究,收集2012年1月至2021年3月在北京大学第一医院儿科诊断为MOGAD的42例患儿,进行长期随访,分析其临床表型,并比较利妥昔单抗、吗替麦考酚酯及硫唑嘌呤等不同疾病修正治疗药物的疗效。采用Kruskal-Wall H检验比较不同时机启动疾病修正治疗的年复发率、末次随访时扩展残疾状态量表(EDSS)评分,Wilcoxon符号秩和检验比较加用疾病修正治疗前后年复发率差异,Log-rank(Mantel-Cox)生存曲线比较不同治疗方案治疗后复发比例。结果42例患儿中男22例、女20例,起病年龄为5.96(2.33~12.90)岁,起病至末次随访为4.46(1.25~13.00)年,共161次临床急性发作。急性播散性脑脊髓炎为首次发作和病程中所有发作的最常见表型[60%(25/42)和38%(61/161)],整体病程的临床综合征归类最常见为视神经脊髓炎谱系疾病(50%,21/42)。42例患儿中5例(12%)表现为脑炎,6例(14%)合并抗N-甲基-D-天冬氨酸受体抗体重叠综合征。头颅磁共振成像(MRI)常受累部位为皮质下白质(71%,88/124)、皮质(26%,32/124)和脑室旁白质(26%,32/124)。脊髓MRI常受累为颈髓(70%,16/23)和胸髓(61%,14/23),43%(10/23)为长节段。34例患儿应用了疾病修正治疗药物,利妥昔单抗、吗替麦考酚酯、硫唑嘌呤治疗后年复发率均较治疗前下降(均P<0.05),各组间治疗后年复发比例差异无统计学意义(P=0.307)。结论儿童MOGAD首次发作及所有急性发作最常见临床表型为急性播散性脑脊髓炎,最常见临床综合征为视神经脊髓炎谱系疾病。利妥昔单抗、吗替麦考酚酯及硫唑嘌呤可降低年复发率,但何种治疗效果更佳尚不明确。 展开更多
关键词 儿童 脱髓鞘自身免疫疾病 中枢神经 MOG-IgG相关疾病 临床表型 治疗
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RHOBTB2 gene associated epilepsy and paroxysmal movement disorder:two cases report and literature review 被引量:1
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作者 Xueyang Niu Yan Sun +4 位作者 Ying Yang Miaomiao Cheng Quanzhen Tan Jie zhang yuehua zhang 《Acta Epileptologica》 2021年第1期126-133,共8页
Background:RHOBTB2 gene is associated with developmental and epileptic encephalopathy-64(DEE-64),which is characterized by epilepsy,developmental delay,microcephaly,unspecific facial dysmorphism,and paroxysmal movemen... Background:RHOBTB2 gene is associated with developmental and epileptic encephalopathy-64(DEE-64),which is characterized by epilepsy,developmental delay,microcephaly,unspecific facial dysmorphism,and paroxysmal movement disorders.Most previous studies showed that the phenotypes of RHOBTB2 gene include developmental and epileptic encephalopathy(DEE)and DEE with paroxysmal movement disorders.Only one study showed that patient with RHOBTB2 variant had paroxysmal movement disorders with no epilepsy.Case presentations:Two cases with RHOBTB2 variants are presented here:Case one was diagnosed as DEE,he had recurrent afebrile focal status epilepticus and paroxysmal extrapyramidal symptoms in infancy.Interictal electroencephalogram(EEG)showed focal discharges.Brain magnetic resonance imaging(MRI)showed cortical dysplasia.Epilepsy of case one was refractory.Nevertheless,case two only showed paroxysmal movement disorders alone in adolescence.Video EEG showed focal discharges during an interictal dystonic episode and he brain MRI was normal.Conclusion:The phenotypes of RHOBTB2 gene include DEE,paroxysmal movement disorders,and DEE with paroxysmal movement disorders.RHOBTB2 can be one of the pathogenic genes of paroxysmal movement disorders. 展开更多
关键词 RHOBTB2 GENE EPILEPSY Paroxysmal movement disorders
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Clinical phenotype features and genetic etiologies of 38 children with progressive myoclonic epilepsy 被引量:1
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作者 Jing zhang Ying Yang +14 位作者 Xueyang Niu Jiaoyang Chen Wei Sun Changhong Ding Lifang Dai Liping zhang Qi Zeng Yi Chen Xiaojuan Tian Xiaoling Yang Taoyun Ji Zhixian Yang Yanling Yang Yuwu Jiang yuehua zhang 《Acta Epileptologica》 2020年第1期111-125,共15页
Background:Progressive myoclonic epilepsy(PME)is a group of neurodegenerative diseases with genetic heterogeneity and phenotypic similarities,and many cases remain unknown of the genetic causes.This study is aim to su... Background:Progressive myoclonic epilepsy(PME)is a group of neurodegenerative diseases with genetic heterogeneity and phenotypic similarities,and many cases remain unknown of the genetic causes.This study is aim to summarize the clinical features and study the genetic causes of PME patients.Methods:Sanger sequencing of the target gene,Next Generation Sequencing(NGS)panels of epilepsy,trio-based Whole Exome Sequencing(WES)and detection of cytosine-adenine-guanine(CAG)repeat number were used to investigate the genetic causes of PME patients.Results:Thirty-eight children with PME whose seizure onset age ranged from 3 months to 12 years were collected from February 2012 to November 2019 in three hospitals in Beijing,China.The seizure types included myoclonic seizures(n=38),focal seizures(n=19),generalized tonic-clonie seizure(GTCS)(n=13),absence seizures(n=4),atonic seizures(n=3),epileptic spasms(n=2)and tonic seizures(n=1).Twenty-seven cases were sporadic and 11 had family members affected.Established PME-related genes were identified in 30 out of 38(78.9%)patients who had either recessively inherited or de novo heterozygous mutations.Among these 30 cases,there were 12 cases(31.6%)of neuronal ceroid lipofuscinoses(the causing gene contains TPP1,PPT1,CLN5,CLN6 and MFSD8),two cases of sialidosis(the causing gene is NEU1),two cases of neuronopathic Gaucher disease(the causing gene is GBA),one case of spinal muscular atrophy-progressive myoclonic epilepsy(the causing gene is ASAH1),four cases of KCNC1 mutation-related PME,four cases of KCTD7 mutation-related PME,two cases of TBC1D24 mutation-related PME,one case of GOSR2 related PME,and two of dentatorubral-pallidoluysian atrophy(the causing gene is ATN1).In total,13 PME genes were identified in our cohort.The etiology was not clear in eight patients.Conclusion:PME is a group of clinically and genetically heterogeneous diseases.Genetic diagnosis was clear in 78.9%of PME patients.Various of genetic testing methods could increase the rate of genetic diagnosis.Neuronal ceroid lipofuscinoses(NCL)is the most common etiology of PME in children.Nearly one third PME children were diagnosed with NCL.GOSR2 related PME was in our cohort in Asia for the first time. 展开更多
关键词 Progressive myoclonic epilepsy GENOTYPE PHENOTYPE
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Discovery of spirooxindole-ferrocene hybrids as novel MDM2 inhibitors 被引量:1
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作者 Jun Mu Xin Xie +6 位作者 Shanshan Xiong yuehua zhang Yuting Wang Qian Zhao Hongping Zhu Wei Huang Gu He 《Chinese Chemical Letters》 CSCD 2021年第6期1897-1901,共5页
A series of spirooxindole-ferrocene hybrids bearing five or four contiguous chiral centers were designed and synthesized via organocatalysis.In vitro protein binding and cellular proliferation assays suggested that co... A series of spirooxindole-ferrocene hybrids bearing five or four contiguous chiral centers were designed and synthesized via organocatalysis.In vitro protein binding and cellular proliferation assays suggested that compound 5 d was the most potent mouse double minute 2 homolog(MDM2)inhibitor.In addition,mechanistic studies indicated that compound 5 d suppressed MDM2-mediated p53 degradation,induced apoptosis and promoted oxidative damage.Molecular docking studies have suggested that 5 d binds to MDM2 by mimicking the Trp23 and Leu26 residues of p53.This work can provide a basis for the development of novel multifunctional MDM2 inhibitors.The further exploration of more derivatives from this library and additional investigation of organocatalysis application in the development of new molecules may generate new potential lead compounds for cancer-targeted therapy. 展开更多
关键词 SPIROOXINDOLE FERROCENE MDM2 Apoptosis Breast cancer
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Icing on the cake: combining a dual PEG-functionalized pillararene and an A-D-A small molecule photosensitizer for multimodal phototherapy
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作者 Bing Lu Zhecheng zhang +8 位作者 Yangchaowei Ji Shide Zhou Boyu Jia yuehua zhang Jin Wang Yue Ding Yang Wang Yong Yao Xiaowei Zhan 《Science China Chemistry》 SCIE EI CSCD 2022年第6期1134-1141,共8页
The design of photosensitizers with multimodal antitumor activity and the construction of nanocarriers with specific targeting are two magic weapons to achieve highly efficient tumor phototherapy. Here we developed an... The design of photosensitizers with multimodal antitumor activity and the construction of nanocarriers with specific targeting are two magic weapons to achieve highly efficient tumor phototherapy. Here we developed an A-D-A fused-ring conjugated small molecule photosensitizer DPIC and proposed a new strategy of constructing phototherapy agents, namely using supramolecular vesicles constructed by the self-assembly of a novel dual PEG-functionalized pillararene WP5-2 PEG to load DPIC. These new nanocarriers had excellent water solubility and drug encapsulation rates. The prepared DPIC NPs had a better water solubility compared with DPIC molecules and had a uniform hollow spherical morphology, which is beneficial for cell endocytosis. Under laser irradiation(808 nm), the DPIC NPs had a photothermal conversion efficiency(PTCE) of 55% and a PTCE of 49% under980-nm laser irradiation. The DPIC NPs also displayed dual type I and type II photodynamic activity. DPIC NPs had superior biocompatibility and stability and can also inhibit tumor growth in vitro and in vivo, demonstrating their potential for highly efficient cancer phototherapy. 展开更多
关键词 A-D-A small molecule photosensitizer amphiphilic pillararene supramolecular vesicle photothermal therapy photodynamic therapy
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