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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1503-1521页

作者： Mingchuan Yang jia Zheng Wenhui yu Yanghua Li YaliWang Zilu zhang Zhenhui Kang College of Biological Engineering Sichuan University of Science&EngineeringYibin644002China Wuliangye Yibin Co. Ltd.Yibin644000China

Sorghum is not only an important bio-energy crop but also a vital raw material for *** copper affects the growth and metabolism of crops in speciﬁc *** study identiﬁed 8475 differentially expressed genes(DEGs)by high-throughput transcriptome sequencing in the sorghum cultivar‘Jinnuoliang 2’after 24 h of treatment with 10 mM *** GO analysis,476 genes were functionally annotated,which were mainly related to catabolism and biosynthetic ***,90 pathways were annotated by employing the KEGG *** them,glutathione metabolism and peroxisome were induced,while photosynthesis,photosynthesis-antenna protein,and carbon sequestration of photosynthetic organisms were *** the DEGs,399 were identiﬁed to encode transcription factors belonging to 49 *** study also identiﬁed a WRKY transcription factor-encoding gene SbWRKY24 from the transcriptome *** studying its function,the relative expression levels of SbWRKY24 in roots and leaves post-treatment with different growth hormones and exposure to a variety of abiotic stresses were detected by ***24 showed treatment-and tis-sue-speciﬁc expression patterns,indicating its unique role in stress *** study lays a theoretical basis for the functional exploration of SbWRKY24,elucidating the mechanism of copper resistance,and elaborating on the stress responses in *** also guides the exploration of the molecular mechanism of copper ions inducing intracellular signal transduction pathways.

关键词： Sorghum copper stress transcriptome transcription factor SbWRKY24

PbrARF4 contributes to calyx shedding of fruitlets in ‘Dangshan Suli’ pear by partly regulating the expression of abscission genes

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Horticultural Plant Journal 2024年第2期10卷 341-354页

作者： Guoling Guo Pengfei Wei Tao yu Haiyan zhang Wei Heng Lun Liu Liwu Zhu Bing jia School of Horticulture Anhui Agricultural UniversityHefeiAnhui 230036China Huayuan Foreign Language School Zhejiang Normal UniversityJinhuaZhejiang 322100China Agricultural Experimental Center of Guiyang Guiyang Agriculture and Rural BureauGuiyangGuizhou 550018China

Fruitlet calyx shedding in pear plants is apparently regulated via numerous pathways that involve both environmental triggers and phytohormones cues such as auxin. In this study, we found at 10 days after full bloom (DAFB) higher levels of indoleacetic acid (IAA) and tryptophan (Trp) in calyx persistence fruitlet (CPF) than calyx shedding fruitlet (CSF) ofDanshan Suli’ pear (Pyrus bretschneideri Rhed.). Consisting with this, the activity of indolealdehyde oxidase (IAAIdO), which promotes IAA synthesis, was remarkably increased, and that of peroxidase(POD), which degrades IAA, dropped markedly in CPF but not in CSF. Further, qRT-PCR results revealed that most of 31 PbrARFs (encoding auxin response factors) in Pyrus bretschneideri were highly expressed in CPF, whereas PbrARF4, PbrARF24 and PbrARF26 were significantly downregulated in CPF vis-a-vis CSF. Phylogenetic analysis revealed that 6 PbrARFs clustered in the group III, where PbrARF4 showed the closest affinity with AtARF1 that promotes organ abscission, indicating a putative role of PbrARF4 in mediating the process of calyx shedding in pear. In fact, the ectopic overexpression of PbrARF4 in Solanum lycopersicum resulted in an earlier-formed and deeper abscission layer (AL) in the transgenic plants, whose calyxes were more prone to wilt at the mature red stage (MR) compared with the control plants (wild-type). More importantly, expression levels of the abscission genes SILS and Sl Cel2 in transgenic plants overexpressing PbrARF4 were significantly upregulated in comparation with the WT, whereas those of Sl BI and Sl TAPG2 were considerably inhibited. Further, PbrJOINTLESS and PbrIDA,the two genes related to calyx shedding in pear, were up-regulated more in CSF than CPF. The findings contribute to a better understanding of PbrARFs involved in fruitlet calyx shedding of pear, which could prove beneficial to improving the quality of pear fruit.

关键词： Pear Pyrus bretschneideri Rehd Calyx shedding IAA PbrARF4 Abscission genes

Climatic impacts induced by winter wheat irrigation over North China simulated by the nonhydrostatic RegCM4.7

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Advances in Climate Change Research 2024年第2期15卷 197-210页

作者： jia WU Zhen-yu HAN Xue-Jie GAO Zheng-jia LIU National Climate Centre China Meteorological AdministrationBeijing 100081China Key Laboratory for Climate Studies China Meteorological AdministrationBeijing 100081China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China

Quantification of the impact of winter wheat irrigation on the climate and the occurrence of extreme climatic events over North China is crucial for regional adaptation *** related studies mainly focused on the impact on surface processes;however,few focused on the effects of extreme events using high-resolution nonhydrostatic regional climate ***,the 9-km-resolution nonhydrostatic RegCM4.7 was coupled with a crop irrigation scheme and an updated winter wheat irrigation dataset to better simulate irrigation *** experiments were conducted with and without winter wheat irrigation to isolate the effects of *** showed that irrigation simulation reduces the model biases in temperature,precipitation,latent heat flux,soil moisture,sensitive heat flux,and top-layer soil ***,it also reduces the bias and increases the correlation with observations obtained in irrigated areas,especially in summer,indicating better representation of irrigation *** wheat irrigation tends to cause substantial cooling of the local surface maximum,minimum,and mean air temperatures(by-1.68,-0.34,and-0.79℃,respectively)over irrigated areas of North China,with the largest changes observed in relation to maximum ***,precipitation is found to increase during spring and summer,which is strongly related to water vapor transport in the lower levels of the *** analyses indicated that the number of annual mean hot days decrease(-13.9 d),whereas the number of both comfort days(+10.2 d)and rainy days(days with total precipitation greater than 1 mm:+6.6 d)increase over irrigated areas,demonstrating beneficial feedback to human perception and ***,although the heat wave risk increases(number of annual mean heat wave days:+5.8 d),the impact is limited to small areas within irrigated ***,no notable change was found in terms of heavy rainfall events and precipitation intensity

关键词： Nonhydrostatic regional climate model Irrigation effect Extreme events North China

Microscopic ensemble bootstrap in phase space

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Communications in Theoretical Physics 2024年第6期76卷 72-76页

作者： yu zhang College of Mechanics and Engineering Science Hohai UniversityNanjing 211100China

The bootstrap method which has been studied under many quantum mechanical models turns out to be feasible in microcanonical ensembles as *** the approach of Nakayama(2022 ***.A 372250054)produces a sector when energy is negative,in this paper we report a method that has stronger constraints and results in a smaller *** also study other models to demonstrate the effectiveness of our method.

关键词： numerical bootstrap microcanonical ensemble Poisson bracket bootstrap oscillator

Improved photocatalytic performance of acetaldehyde degradation via crystal plane regulation on truncated octahedral CeO_(2)

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Rare Metals 2024年第5期43卷 2026-2038页

作者： Bin Xu Lu jia Hui Yang yue Wang Si-yu Fan Sai-Sai yuan Qi-Taozhang Ming zhang Teruhisa Ohno School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China College of Environmental Science and Engineering Yangzhou UniversityYangzhou225127China Department of Applied Chemistry Faculty of EngineeringKyushu Institute of TechnologyKitakyushu804-8550Japan School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212000China National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of TechnologyHuaian 223003China School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471000China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China

In this study,the truncated octahedral CeO_(2)(CeO_(2)-to)with special morphology was prepared by the solvothermal method with oleic acid(OA)and oleamine(OM)as the morphology-directing ***-resolution transmission electron microscopy(HRTEM)results show that CeO_(2)-to exposes composite{100}and{111}facets,while CeO_(2)cubic(CeO_(2)-c)and CeO_(2)octahedral(CeO_(2)-o)only expose single crystal facets of{100}plane and{111}plane,***,this CeO_(2)-to photocatalyst exhibits remarkable photooxidation performance of gaseous acetaldehyde(CH_(3)CHO)degradation,in which CO_(2)generation value reaches 1.78 and 7.97-times greater than that of CeO_(2)-c and CeO_(2)-o,*** addition,the active species trapping experiment signifies that superoxide(·O_(2)^(-))and holes(h^(+))are the main reactive substances during the CH_(3)CHO degradation process,and the electron paramagnetic resonance(EPR)spectra indicates that the former is the major ***,the electron transfer mechanism between CeO_(2)-to{100}and{111}facets and the surface oxygen adsorption ability are revealed via density functional theory(DFT)*** is also confirmed that{100}facets are more conducive to the absorption of acetaldehyde than{111}***,a reasonable mechanism for improved photocatalytic CH_(3)CHO degradation on CeO_(2)-to is proposed based on relevant experiments and DFT *** study demonstrates that the systematic development of surface homojunction structured photocatalysts can efficiently increase the degradation activity for volatile organic compounds(VOCs).It also offers additional direction for optimizing the photocatalytic activity of other ceriumbased photocatalysts.

关键词： Truncated octahedral CeO_(2)(CeO_(2)-to) Composite crystal faces Surface energy level Efficient electrontransfer

Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

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Plant Diversity 2024年第1期46卷 101-115页

作者： Tao Yang jia-Hao Cai Yan-Zhi Dai Hong-yu Chen Lei Han Li zhang Wei-yu Liang Xu-Jun Li Wen-jia Li Jing-yu Wu San-Ping Xie De-Fei Yan School of Earth Sciences and Key Laboratory of Mineral Resources in Western China(Gansu Province) Lanzhou UniversityLanzhou 730000China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Center for Research and Education on Biological Evolution and Environments School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China

Understanding the paleoenvironment and phytogeographical history of the Tibetan Plateau,China relies on discovering new plant *** Qaidam Basin has long been regarded as an ideal‘field laboratory’to investigate the paleoclimate and paleobiological evolution of the northern Tibetan ***,fossil angiosperms from the Qaidam Basin are rare,and our knowledge of its paleovegetation is ***,we report fossil leaves and fruits of Betulaceae found from the Oligocene Shangganchaigou Formation of northwestern Qaidam Basin(Huatugou area).Comparative morphological analysis led us to assign the fruits to the Betula subgenus Betula and the leaves to Carpinus *** findings,together with other reported fossil plants from the same locality,reveal a close floristic linkage between the Qaidam Basin and Europe during the *** northern pathway of this floristic exchange may have crossed through the Qaidam Basin during the late *** floristic linkage may have been facilitated by the continuous narrowing of the Turgai Strait and stronger westerlies,which transported moisture and provided favorable climatic ***,fossil plants collected from the Qaidam Basin suggest that during the Oligocene this region had warm and humid deciduous broad-leaf forest,which differs from the region’s modern vegetation and indicates that the Qaidam Basin may have been a suitable region for these plants to flourish and spread during the Oligocene.

关键词： Paleoenvironment Biogeography Betulaceous fossil Qaidam basin Tibetan Plateau Oligocene

Influence of pressure disturbance wave on dynamic response characteristics of liquid film seal for multiphase pump

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Petroleum Science 2024年第3期21卷 2048-2065页

作者： Qing-Ping Li Jin-Ya zhang jia-Xiang zhang Yong-Xue zhang CNOOC Research Institute Company Limited Beijing100028China State Key Laboratory of Natural Gas Hydrate Beijing100028China College of Mechanical and Transportation Engineering China University of PetroleumBeijing2249China

Slug flow or high GVF(Gas Volume Fraction)conditions can cause pressure disturbance waves and alternating loads at the boundary of mechanical seals for multiphase pumps,endangering the safety of multiphase pump *** mechanical seal model is simplified by using periodic boundary conditions and numerical calculations are carried out based on the Zwart-Gerber-Belamri cavitation ***(User Define Function)programs such as structural dynamics equations,alternating load equations,and pressure disturbance equations are embedded in numerical calculations,and the dynamic response characteristics of mechanical seal are studied using layered dynamic mesh *** results show that when the pressure disturbance occurs at the inlet,as the amplitude and period of the disturbance increase,the film thickness gradually *** the fundamental reason for the hysteresis of the film thickness change is that the pressure in the high-pressure area cannot be restored in a timely *** maximum value of leakage and the minimum value of axial velocity are independent of the disturbance period and determined by the disturbance *** mutual interference between enhanced waves does not have a significant impact on the film thickness,while the front wave in the attenuated wave has a promoting effect on the subsequent film thickness changes,and the fluctuation of the liquid film cavitation rate and axial velocity under the attenuated wave condition deviates from the initial *** with pressure disturbance conditions,alternating load conditions have a more significant impact on film thickness and *** actual operation,it is necessary to avoid alternating load conditions in multiphase pump mechanical seals.

关键词： Multiphase pump Liquid film seal Pressure disturbance wave Dynamic response characteristics

Portable fluorescence instrument for detecting membrane integrity in membrane bioreactor (MBR)

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Frontiers of Environmental Science & Engineering 2024年第2期18卷 121-131页

作者： Yang yu Changchun Xin yuxiang Liu Fei Gao Lei zhang Hui jia Jie Wang State Key Laboratory of Separation Membranes and Membrane Processes Tiangong UniversityTianjin 300387China School of Environmental Science and Engineering Tiangong UniversityTianjin 300387China School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China Shenyang Academy of Environmental Sciences Shenyang 110167China Cangzhou Institute of Tiangong University Tiangong UniversityCangzhou 061000China

This study proposed the design, fabrication, and assembly of membrane integrity detection instruments in membrane bioreactors (MBR) based on fluorescence spectroscopy. Based on the PARAFAC model, we found that the peak at 280/335 nm strengthened after membrane breakage. The peak at 340/430 nm reflected the sludge concentration in the MBR and reduced the influence of internal filtration effects on detection. Therefore, we determined that the dual-LED light source excitation detection system can detect tryptophan-like substances at 280 nm (T-peak) and humic acid at 340 nm (C-peak). T-peak was identified as the core index indicating membrane integrity. Moreover, the C-peak is the reference indicator factor for a sensitive response to changes in the sludge concentration. The portable fluorescence instrument exhibited high sensitivity and good feedback accuracy compared to particle counting and turbidity detection, where the log reduction value was greater than 3.5. This overcomes the disadvantage of false alarms in particle counters and is not affected by the position of the pump system. This portable instrument provides a flexible and highly sensitive method for the assessment of industrial membrane integrity.

关键词： Membrane integrity Fluorescence spectrum Portable instrument Membrane bioreactor

《家用电冰箱用户使用能耗及食品储存评价规范》标准解读

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中国标准化 2024年第17期 189-193页

作者：杨丽云亓新金炳奎张宇佳赵晓红中家院(北京)检测认证有限公司中国家用电器研究院广东美芝制冷设备有限公司

日常生活中家用电冰箱的电能消耗和食材储存是消费者关注度比较高的性能指标。现行的国标GB/T 8059—2016中耗电量试验是在标准的试验条件16℃和32℃进行测试,试验过程中未放置负载,与消费者实际使用状态存在差异。放置真实食材后电冰... 详细信息

日常生活中家用电冰箱的电能消耗和食材储存是消费者关注度比较高的性能指标。现行的国标GB/T 8059—2016中耗电量试验是在标准的试验条件16℃和32℃进行测试,试验过程中未放置负载,与消费者实际使用状态存在差异。放置真实食材后电冰箱能耗的高低及食材储存的效果如何目前并无相关的评价方法,T/CAS 862—2024《家用电冰箱用户使用能耗及食品储存评价规范》标准的发布和实施有效解决了这个难题。本文就该标准的背景、构架、各部分内容的制定思路以及技术指标、评价方法等进行了论述和解读,以期为企业和检测机构更透彻地理解标准提供参考。

关键词：家用电冰箱能耗评价

Gut microbiome and serum metabolome analyses identify Bacteroides fragilis as regulators of serotonin content and PRL secretion in broody geese

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Journal of Integrative Agriculture 2024年第6期23卷 2033-2051页

作者： yu zhang Ning Zhou jia Wu Lina Song Qiang Bao Kaiqi Weng Yang zhang Wanwipa Vongsangnak Guohong Chen Qi Xu College of Animal Science and Technology Yangzhou UniversityYangzhou 225009China Joint International Research Laboratory of Agriculture&Agri-Product Safety of Ministry of Education Yangzhou UniversityYangzhou 225009China Department of Zoology Faculty of ScienceKasetsart UniversityBangkok 10900Thailand

Broody behavior is regulated by hypothalamic prolactin secretion,which seriously affects egg production in poulty *** studies have provided evidence that animal behavior is governed by dynamic bidirectional communication between specific gut bacteria and their host via the brain-gut-microbiome ***,little research focused on how the gut microbiota influence broody behavior in *** this study,Zhedong white geese in laying and brooding phases were *** differentially abundant bacteria in cecum were detected between brooding and laying geese through metagenomic analyses and 16S rRNA sequencing(P<0.05),and Bacteroides fragilis was specifically identified as a key driver species in the brooding ***,the serum metabolites were quantified,and the 313 differentially abundant metabolites were found between the two groups of different physiological *** were primarily enriched in the tryptophan metabolism *** correlation analyses revealed there was a significant positive correlation between *** abundance and the context of 11 tryptophan metabolism-related metabolites(such as serotonin,etc.)in broody geese,which hinted that those tryptophan metabolites might be produced or driven by ***,the serum hormone levels were also *** found there was a positive correlation between *** abundance and content of ***,prolactin secreted by the pituitary gland was greater in brooding geese than that in laying geese,which was also highly correlated with *** *** result implied that *** could promote the secretion of prolactin by the pituitary ***,the current study findings provided the information on gut microbiota influencing broody behavior,*** produced or driven more serum serotonin,and stimulated the pituitary gland to secret more prolactin,which potentially offered a new enlightenment for the intervention of broody behavior in pou

关键词： geese broody behavior gut microbiota serotonin prolactin