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Vitamin D supplementation in pregnant women or infants for preventing allergic diseases:a systematic review and meta-analysis of randomized controlled trials

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Chinese Medical Journal 2022年第3期135卷 276-284页

作者： Chao Luo Yaning Sun Zuojing zeng Ying liu Shunlin Peng Department of Otolaryngology Hospital of Chengdu University of Traditional Chinese MedicineChengduSichuan 610075China

Background:It is still unclear if and to what extent antenatal or infant or childhood vitamin D supplementation would affect the development of allergy diseases later in *** study aimed to review the efficacy of vitamin D supplementation in pregnant women,infants,or children for the prevention of ***:MEDliNE(PubMed),EMBASE(OVID),and the Cochrane Central Register of Controlled Trials were searched up to March 1,*** included only randomized controlled trials(RCTs).We performed a systematic review and meta-analysis for vitamin D supplementation in primary allergy *** trials were assessed for risk of bias using the Cochrane Collaboration domains and the consensus was reached via discussion with the full study *** descriptively summarized and quantitatively synthesized original data to evaluate vitamin D supplementation in primary allergy prevention by using Review Manager software for ***:The search yielded 1251 *** RCTs were included in this analysis.A meta-analysis revealed that vitamin D supplementation for pregnant women or infants may not decrease the risk of developing allergic diseases,such as asthma or wheezing(supplementation for pregnant women,risk ratio[RR]:1.01,95%confidence interval[CI]:0.81-1.26,P=0.90,I^(2)=47%;supplementation for infants,RR:1.00,95%CI:0.70-1.43,P=0.99,I2=0%;supplementation for pregnant women and infants,RR:0.35,95%CI:0.10-1.25,P=0.11),eczema(supplementation for pregnant women,RR:0.95,95%CI:0.80-1.13,P=0.77,I^(2)=0%;supplementation for infants,RR:0.84,95%CI:0.64-1.11,P=0.19,I2=42%),allergic rhinitis(supplementation for pregnant women,RR:0.93,95%CI:0.78-1.11,P=0.15,I^(2)=47%),lower respiratory tract infection(LRTI)(supplementation for pregnant women,RR:0.97,95%CI:0.85-1.11,P=0.59,I^(2)=0%),or food ***:Supplementation of vitamin D in pregnant women or infants does not have an effect on the primary prevention of allergic diseases.

关键词： Vitamin D Prevention Pregnancy Infants Allergy Meta-analysis

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The association of HpDof1.7 and HpDof5.4 with soluble sugar accumulation in pitaya fruit by transcriptionally activating sugar metabolic genes

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Food Quality and Safety 2022年第4期6卷 619-628页

作者： Zhenliang Mou Runxi zeng Nanhui Chen Zongli liu Zexiang zeng Yonghua Qin Wei Shan Jianfei Kuang Wangjin Lu Jianye Chen Yating Zhao State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation Ministry of EducationCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina

Soluble sugar is one of the most important factors affecting fruit flavor and ***,we report the identification of two Dof(DNA-binding with one finger)transcription factors termed HpDof1.7 and HpDof5.4 and their roles in influencing sugar accumulation in ***1.7 and HpDof5.4 share a similar expression pattern with sugar metabolism-related genes HpSuSy1 and HpINV2,and sugar transporter genes HpTMT2 and HpSWEET14 during pitayas maturation,and their expression pattern was also consistent with the accumulation of glucose and fructose,which were the predominant sugars in ***1.7 and HpDof5.4 were both typical nucleus-localized proteins with trans-activation *** mobility shift assay revealed that HpDof1.7 and HpDof5.4 were bound to promoters of HpSuSy1,HpINV2,HpTMT2 and ***,transient expression assays in tobacco leaves showed that HpDof1.7 and HpDof5.4 increased the activities of HpSuSy1,HpINV2,HpTMT2 and HpSWEET14 promoters,thus facilitating sugar accumulation by transcriptionally enhancing sugar metabolic pathway *** findings provide a new perspective on the regulatory mechanisms of Dof transcription factors in sugar accumulation and pitaya fruit quality formation.

关键词： Pitaya sugar accumulation Dof transcription factors transcriptional activation

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高强再生混凝土干缩特性

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土木建筑与环境工程 2010年第4期32卷 125-130页

作者：曾力赵伟武汉大学水资源与水电工程科学国家重点实验室湖北武汉430072

研究了再生粗细骨料对混凝土干缩性能的影响,试验结果表明,再生骨料对混凝土的干缩影响显著,尤其是再生细骨料。重点研究了高强再生粗骨料混凝土的干缩特性,通过高强再生混凝土配合比优化设计,再生粗骨料混凝土的干缩率仅稍大于天然粗... 详细信息

研究了再生粗细骨料对混凝土干缩性能的影响,试验结果表明,再生骨料对混凝土的干缩影响显著,尤其是再生细骨料。重点研究了高强再生粗骨料混凝土的干缩特性,通过高强再生混凝土配合比优化设计,再生粗骨料混凝土的干缩率仅稍大于天然粗骨料混凝土,与其基本相当。在再生混凝土中掺膨胀剂具有很好的补偿收缩效果,达到高强再生混凝土微干缩的目的。研究表明,干燥环境养护对再生混凝土强度的影响明显大于普通混凝土,因此,再生混凝土更需注意保湿养护。还从界面结构和骨料特性分析了再生混凝土的干缩机理。

关键词：高强混凝土干缩再生骨料混凝土配合比混凝土

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Regulation of the water status in three co-occurring phreatophytes at the southern fringe of the Taklamakan Desert

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Journal of Plant Ecology 2008年第4期1卷 227-235页

作者： Frank M.Thomas Andrea Foetzki Dirk Gries Helge Bruelheide Xiangyi li Fanjiang zeng Ximing Zhang Department of Plant Ecology Albrecht von Haller Institute for Plant SciencesGeorg-August-Universitat GottingenUntere Karspule 237073 GottingenGermany Present address:Department of Geobotany University of TrierBehringstraße 2154296 TrierGermany Eidgenossisches Institut fur Agrarokologie und Landwirtschaft Forschungsanstalt AgroscopeReckenholzstrasse 1918046 ZurichSwitzerland Institute of Geobotany and Botanical Garden Martin Luther University Halle-WittenbergAm Kirchtor 106108 Halle(Saale)Germany Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences40 South Beijing Road830011 UrumqiChina

Aims We investigated the regulation of the water status in three predominant perennial C3 phreatophytes(Alhagi sparsifolia,Populus euphratica,Tamarix ramosissima)at typical sites of their occurrence at the southern fringe of the hyperarid Taklamakan Desert(north-west China).Methods In the foreland of the river oasis of Qira(Cele),we determined meteorological variables,plant biomass production,plant water potentials(WL)and the water flux through the *** calculated the hydraulic conductance on the flow path from the soil to the leaves(kSL)and tested the effects of kSL,WL and the leaf-to-air difference in the partial pressure of water vapour(Dw)on stomatal regulation using regression *** Findings Despite high values of plant water potential at the point of turgor loss,all plants sustained WL at levels that were high enough to maintain transpiration throughout the growing *** ***,stomatal resistance(rs;related to leaf area or leaf mass)was most closely correlated with kSL;whereas in ***,~70%of the variation in rs was explained by *** ***,leaf area-related rs was significantly correlated with WL and *** regulation mechanisms are in accordance with the growth patterns and the occurrence of the species in relation to their distance to the ground water.

关键词： aboveground growth extreme aridity stomatal conductance transpirational demand vapour pressure deficit

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Advances in studying of the pharmacological activities and structure–activity relationships of natural C-glycosylflavonoids

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Acta Pharmaceutica Sinica B 2013年第3期3卷 154-162页

作者： Peng zeng Yong Zhang Chen Pan Qi Jia Fujiang Guo Yiming li Weiliang Zhu Kaixian Chen School of Pharmacy Shanghai University of Traditional Chinese MedicineShanghai 201203China Drug Discovery and Design Centre Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China

C-glycosylflavonoids are characterized by a bond between the anomeric carbon of a sugar moiety and the C-6 or C-8 position of a flavonoid A *** compounds are widespread in nature and have become the subject of increasing research interest due to their high biological *** review focuses on the biological effects of various C-glycosylflavonoids and their structure–activity relationships(SAR)as elucidated over the last 5 years.

关键词： C-glycosylflavonoids Pharmacological activities Structure–activity relationship Antioxidant activity

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Experimental and numerical study on the dynamic shear banding mechanism of HfNbZrTi high entropy alloy

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Science China(Technological Sciences) 2022年第8期65卷 1808-1818页

作者： SONG Wei-li MA Quan zeng QingLei ZHU ShengXin SUI MingBin CAO TangQing QI Wei CHEN YinQiang YU XiaoQi XUE YunFei CHEN Hao-Sen Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of lightweight Multi-Functional Composite Materials and Structures Beijing 100081China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China

High-entropy alloys(HEAs) have attracted considerable attention in recent years because of their unique mechanical *** this work, the mechanism of dynamic shear banding(also called adiabatic shear bands, ASBs) in a BCC HEA HfNbZrTi was investigated combining dynamic experiments and numerical simulations. The temperature evolution during dynamic shear banding, which has been believed to play a dominant role during ASB formation in the literature, was measured using high-speed infrared thermal detectors synchronized with a split Hopkinson pressure bar system. The dynamic mechanical behavior of the BCC HEA was described using the Johnson-Cook model accompanied by damage accumulation. The process of ASB formation,considering potential contributions from thermal softening and damage softening, was numerically investigated by controlling the activation of each softening mechanism separately. Based on the results of experimental observation and numerical analysis,dynamic shear banding in this BCC HEA is proposed to be dominated by damage softening, and thermal softening only plays a secondary role, which differs from the thermal-softening-dominated ASB formation in typical FCC HEAs such as the Cantor alloy.

关键词： adiabatic shear band high entropy alloys damage softening thermal softening

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Efficient Transformation of indica Rice Mediated by Agrobacterium and Generation of NcGDH Transgenic Genic Male-Sterile Rice with High Nitrogen Use Efficiency

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Rice science 2021年第6期28卷 529-531,I0030-I0036页

作者： liu Cong TANGg Dongying ZHOU Zhengkun zeng Hui HU Xiaochun TAN Vanning QIN Peng DENG Yong WU Jicai WANG Yan YANG Yuanzhu YUAN Dingyang liu Xuanming liN Jianzhong Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation College of BiologyHunan UniversityChangsha 410082China Academy of Seed Industry of Hunan Yahua Changsha 410001China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterHunan Academy of Agricultural SciencesChangsha 410125China

Although some indica rice varieties have already been transformed by Agrobacterium,there is still great demand of developing transformation system for economically important indica ***,a fast and efficient method of Agrobacterium-mediated transformation for indica rice was developed,and an NcGDH transgenic genic male-sterile(GMS)indica rice 628S was generated using this *** regenerated transgenic plantlets can be obtained within three months,and the transformation efficiency achieved about 17%.NcGDH transgenic 628S exhibited an enhanced capacity of ammonium assimilation and more effective panicles under low nitrogen *** the hybrid rice lines generated by NcGDH transgenic 628S showed 8%-27%yield advantage than those by the non-transgenic *** together,these results provide an efficient transfbnnation method for indica rice and an opportunity to improve nitrogen use efficiency(NUE)and the heterosis of hybrid rice.

关键词： sterile Transformation transformation

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一种新的跳频信号检测模型

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电子学报 2012年第4期40卷 832-837页

作者：曾禹李鸥郑州市1001信箱825号信息工程大学信息工程学院河南郑州450002

对基于信道化处理的跳频信号检测模型进行了研究.在介绍并推导了该检测结构的基础上,分析了该模型运算复杂度过高的原因,设计了一种基于分层处理的跳频信号检测模型.该模型通过对信号进行分层处理,减少了监控无用信道的面积,较大幅度降... 详细信息

对基于信道化处理的跳频信号检测模型进行了研究.在介绍并推导了该检测结构的基础上,分析了该模型运算复杂度过高的原因,设计了一种基于分层处理的跳频信号检测模型.该模型通过对信号进行分层处理,减少了监控无用信道的面积,较大幅度降低了模型的运算量,提高了模型对资源的利用率,提升了模型的实用价值.仿真结果表明,改进后模型的运算量得到了大幅降低,验证了模型的有效性.

关键词：跳频通信信号检测信道化

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Baseline symptoms of depression and anxiety negatively impact the effectiveness of CBTi in treating acute insomnia among young adults

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General Psychiatry 2023年第3期36卷 168-174页

作者： Chenxi Zhang Shufei zeng Yan Xu Shuai liu Shixu Du Leqin Fang Zhihong Lv lili Zhang Bin Zhang Department of Psychiatry Nanfang HospitalSouthern Medical UniversityGuangzhouChina Center of Sleep Medicine Nanfang HospitalSouthern Medical UniversityGuangzhouChina

Background Cognitive-behavioural therapy for insomnia(CBTi)is the first-line treatment for those with this sleep ***,depressive and anxiety symptoms often co-occur with acute insomnia,which may affect the effectiveness of *** This study aimed to determine the impact of depressive and anxiety symptoms on the efficacy of CBTi in treating acute *** A single-arm clinical trial was conducted among individuals who have acute *** underwent self-guided CBTi for *** insomnia,depressive symptoms and anxiety symptoms were evaluated using the Insomnia Severity Index and the Hospital Anxiety and Depression Scale at baseline,post-treatment and 3-month *** measures analysis of variance was used to assess the effectiveness of CBTi in treating insomnia,depressive symptoms and anxiety symptoms.A multivariate Cox regression model was used to determine the impact of depressive and anxiety symptoms on *** The study found significant reductions in insomnia,depressive symptoms and anxiety symptoms at both post-treatment and 3-month follow-up(F=17.45,pline depressive symptoms(HR=1.83,p=0.004)and baseline anxiety symptoms(HR=1.99,p=0.001)had significant negative effects on insomnia *** The study showed that a 1-week self-guided CBTi treatment is effective in treating acute insomnia and comorbid depressive and anxiety ***,baseline depressive and anxiety symptoms negatively impact treatment ***,clinicians should assess for depressive and anxiety symptoms before treating acute insomnia with monotherapy CBTi.

关键词： impact CBT treatment

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Chemical looping partial oxidation over FeWOx/SiO2 catalysts

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Chinese Journal of Catalysis 2020年第7期41卷 1140-1151页

作者： Rui liu Chunlei Pei Xianhua Zhang Sai Chen Hongfang li liang zeng Rentao Mu Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China

This paper describes the design of a FeWOx-based oxygen carrier for the chemical partial oxidation of methane(CLPOM).Thermodynamic screening and kinetic analyses both forecast the FeWOx-based oxygen carrier as a promising candidate for the production of *** total methane conversion and syngas yield can be dramatically increased with this catalyst compared to the case with the unmodified WO3/SiO2,thereby enabling CLPOM with 62%methane conversion,93%CO gas-phase selectivity,94%H2 selectivity,and a 2.4 H2/CO *** catalyst has the advantages of high availability of lattice oxygen to oxidize carbonaceous intermediates in time,together with the formation of an Fe-W alloy to promote the surface ***,it demonstrates excellent catalytic performance with no catalyst deactivation at 900°C and 1 *** excellent structural stability plays an essential role in *** revealed via XPS and ICP,the phase segregation has not been observed due to the strong interaction between Fe and W,which resulted in the formation of the Fe-W alloy during the reduction processes and the match between the ion oxidation rates of the Fe and W ions in the oxidation *** results provide fundamental information on the reaction mechanism of FeWOx/SiO2,and present it as a promising candidate for CLPOM.

关键词： Fe-W alloy Methane activation Lattice oxygen diffusion Phase segregation Ion oxidation rate

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