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Relationship Between Hyperspectral Parameters and Physiological and Biochemical Indexes of Flue-Cured Tobacco Leaves

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Agricultural Sciences in China 2007年第6期6卷 665-672页

作者： LI Xiang-yang LIU Guo-shun YANG Yong-feng ZHAO chun-hua yu qi-wei SONG Shi-xu National Tobacco Cultivation and Physiology and Biochemistry Research Center of Henan Agricultural University Zhengzhou 450002P.R. China

The experiment was set up for examining the physiological and biological indexes quickly and exactly, for obtaining information of tobacco-field fertilizing and tobacco growing. The ASD Field spec FR 2500 was used to measure spectra reflectance of flue-cured tobacco and the relationship between hyperspectral parameters and biochemical contents （total nitrogen, chlorophyll, carotenoid）, and physiological indexes （fresh weight, dry weight, moisture content） of flue-cured tobacco leaves was studied by correlation and stepwise regression statistic methods at different nitrogen and potassium levels. The results indicated that the spectra curves of different treatments had obvious rules and great diversities. There were high correlations between different types of spectra parameters and ten physiological and biochemical indexes of flue-cured tobacco leaves. Hyperspectral characteristic variables of ten physiological and biochemical indexes were found through stepwise regression, and SDr/SDb was the characteristic variable closest to seven biochemical contents. Simultaneously, the R2 and regression coefficient of equations reached 0.05 significant level and the equations had good estimating effects through the examination of other samples. Accordingly, this study suggested that the ten physiological and biochemical indexes could be estimated quickly by the estimating models, at the same time nitrogen-potassium fertilization and growth condition of flue-cured tobacco could be inspected.

关键词： flue-cured tobacco leaves hyperspectral parameters physiological and biochemical indexes

Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第11期23卷 945-954页

作者： Gang ZHENG Jing-bo TONG Tian-qi ZHANG Zi-wu WANG Xun LI Ji-qing ZHANG chun-yu qi Hai-zuo ZHOU yu DIAO MOE Key Laboratory of Coast Civil Structure Safety Tianjin UniversityTianjin 300072China School of Science Tianjin UniversityTianjin 300072China China Railway Design Corporation Tianjin 300308China National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit Tianjin 300308China

With the utilization of underground space,backward erosion piping(BEP)has been observed in many underground structures(e.g.,shield tunnels)founded on sandy ***,due to invisibility,the geometry of the eroded pipe and its spatial evolution with time during the piping process was still not *** this study,we developed a Hele-Shaw cell to visualize the dynamic progression of *** imaging process technology,we obtained a typical process of BEP(the erosion process can be divided into a piping progression phase and a piping stabilization phase),quantitatively characterized the formation of erosion pipes,and compared the patterns of erosion(e.g.,the erosion area A and the maximum erosion radius R)that spontaneously develop under different fluxes of *** most interesting finding is that the sand grains in a thicker Hele-Shaw model are easier to dislodge,which is possibly due to the granular system in a thicker model having more degrees of freedom,reducing the stability of the sand grains.

关键词： Backward erosion piping(BEP) Dynamic progression Hele-Shaw cell Visualize Imaging processing technology

Changes of serum enzyme and magnesium of bone elements in rats after oophorectomy

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Changes of serum enzyme and magnesium of bone elements in ra...

中华医学会第三次全国骨质疏松和骨矿盐疾病学术会议

作者： Wu Guo-ting Wang chun Han yu-qi yu Yong-chun

Objective: To explore the mechanism of osteoporosis due to the decrease of estrogen by observing the changes of serum enzymes and magnesium of bone elements in rats after oophorectomy. Method: Serum alkaline phosphatase, acid phosphatase and bone-specific alkaline phosphatase of 15 sixty-operation group and six months after oophorectomy as post-operation group. Put these rats to death

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粉煤灰混凝土强度优化设计

同济大学学报（自然科学版） 2003年第4期31卷 456-459页

作者：张纯禹李启令同济大学材料科学与工程学院上海200092

综合利用主成份降维技术、人工神经网络技术和遗传算法技术 ,在粉煤灰高强混凝土的强度和 3个影响因素之间建立神经网络模型 ,然后应用遗传算法搜索最高抗压强度和相应的配方 .结果表明 :现代优化算法在分析已有实验数据、总结其中的数... 详细信息

综合利用主成份降维技术、人工神经网络技术和遗传算法技术 ,在粉煤灰高强混凝土的强度和 3个影响因素之间建立神经网络模型 ,然后应用遗传算法搜索最高抗压强度和相应的配方 .结果表明 :现代优化算法在分析已有实验数据、总结其中的数值规律、进而对材料进行优化设计等方面。

关键词：粉煤灰混凝土强度预测优化算法主成份分析神经网络遗传算法最优化设计

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现代流通企业经营模型创新设计

商业研究 2007年第12期 194-198页

作者：伍海平淳于永琦哈尔滨技师学院黑龙江哈尔滨150030 哈尔滨师范大学管理科学系黑龙江哈尔滨150080

经营是企业的基本职能。随着时代的进步和经济的发展,现代经营相对于传统经营已发生了巨大变革,其内涵不断丰富深化,外延不断明晰扩展。在市场经济和国际化竞争日趋激烈的新形势下,在对现代流通企业经营规律分析研究的基础上,必须要比... 详细信息

经营是企业的基本职能。随着时代的进步和经济的发展,现代经营相对于传统经营已发生了巨大变革,其内涵不断丰富深化,外延不断明晰扩展。在市场经济和国际化竞争日趋激烈的新形势下,在对现代流通企业经营规律分析研究的基础上,必须要比较全面系统地设计出现代流通企业经营基本模型的新框架,并分别阐明经营要素投入、经营管理活动和经营效益产出的具体内容及构成依据,才能为创新完善现代流通经营理论提出独到的建树。

关键词：现代流通企业经营模型创新

Ideal Bi-Based Hybrid Anode Material for Ultrafast Charging of Sodium-Ion Batteries at Extremely Low Temperatures

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NANO-MICRO LETTERS 2025年第1期17卷 1-16页

作者： Bai, Jie Jia, Jian Hui Wang, yu Yang, chun Cheng Jiang, qing Jilin Univ Key Lab Automobile Mat Sch Mat Sci & Engn Minist Educ Changchun 130022 Peoples R China

Metallic nanoparticles with excellent size controllability and high loading rate are obtained via ultrafast high temperature shock *** Bi/CNRs-15 electrode exhibits an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, while the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C.A novel strategy of high-rate activation is proposed to obtain high capacity and superior stability at low temperature by creating new active sites for interfacial reaction. Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at - 20 degrees C or lower. However, the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported. Herein, a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue, which is synthesized via a high temperature shock method. Such a hybrid shows an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, outperforming all reported SIB anode materials. Coupled with a Na3V2(PO4)3 cathode, the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C. Based on this work, a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries

Visible-light-responsive homologous heterostructure of oxynitrides constructed to boost charge separation and water splitting

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Science China Chemistry 2025年第01期 186-191页

作者： Hai Zou yunfeng Bao Xueshang Xin yu qi Tengfeng Xie Fuxiang Zhang State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences School of Chemistry and Chemical Engineering Liaoning Normal University College of Chemistry Jilin University

Constructing type II heterostructures represents a widely recognized strategy for enhancing charge separation and photocatalytic efficiency,but it remains challenging to fabricate homologous heterostructures based on visible-light-responsive semiconductors,especially for popularly investigated （oxy）nitrides with low thermal ***,we synthesized a homologous heterostructure （denoted as YTON＿H） based on the oxynitrides of YTaO4-xNyand YTa *** heterostructure exhibits type II band structure alignment and intimate interface achieved through a magnesium （Mg） powder-assisted nitridation *** with widely reported heterologous heterostructures,the as-obtained YTON＿H homologous heterostructure could similarly exhibit enhanced charge separation as well as photocatalytic water splitting performance with respect to its counterparts(YTaO4-xNyand YTaON2).Meanwhile,detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.

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育肥奶公犊肝脏和心脏品质及活性物分析

食品工业科技 2014年第23期35卷 347-350页

作者：张丽张玉斌韩玲余群力于春起甘肃农业大学食品科学与工程学院甘肃兰州730070 国家肉牛牦牛产业技术体系三河综合实验站河北三河065202

本实验以育肥奶公犊牛的肝脏和心脏为研究对象,以当地普通黄牛为对照,分析测定了育肥奶公犊和普通黄牛食用品质、营养特性及生物活性物的相应指标。结果表明育肥奶公犊肝脏和心脏色泽正常,p H分别为5.83、5.47,剪切力分别为0.57、2.34k... 详细信息

本实验以育肥奶公犊牛的肝脏和心脏为研究对象,以当地普通黄牛为对照,分析测定了育肥奶公犊和普通黄牛食用品质、营养特性及生物活性物的相应指标。结果表明育肥奶公犊肝脏和心脏色泽正常,p H分别为5.83、5.47,剪切力分别为0.57、2.34kgf,熟肉率分别为83.41%、78.91%,其嫩度适中且有良好的加工性能;测得水分含量为71.30、77.05g/100g,蛋白含量分别为21.80、18.06g/100g,脂肪含量为3.56、3.01g/100g,灰分含量为2.88、2.47g/100g,相比普通黄牛,其蛋白含量高,矿物质丰富;同时测得育肥奶公犊含有较高的生物活性物,其中左旋肉碱含量分别为20.74、10.87mg/kg,牛磺酸含量分别为为6.45、1.66mg/g。综上,育肥奶公犊肝脏和心脏是优质的牛副产物,具有较大的开发利用价值。

关键词：育肥奶公犊食用品质营养特性活性物质

Single-cell transcriptomic profiling reveals ZEB1-mediated regulation in microglial subtypes and the impact of exercise on neuroinflammatory responses

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Traditional Medicine Research 2025年第2期10卷 55-64页

作者： Jin-Fang Wu Yi-Sheng Chen yu-chun Xie Department of Rehabilitation Medicine Jiangsu Province Geriatric HospitalNanjing 210024China Fujian Key Laboratory of Toxicant and Drug Toxicology Medical CollegeNingde Normal UniversityNingde 352100China Central Laboratory Jiangsu Province Geriatric HospitalNanjing 210024China

Background:This study aims to identify distinct cellular subtypes within brain tissue using single-cell transcriptomic analysis,focusing on specific biomarkers that differentiate cell types and the effects of traditional and exercise ***:Four samples were analyzed:older control(OC),older exercise(OE),younger control(YC),and younger exercise(YE).Single-cell RNA sequencing was used to distinguish cellular subtypes through their biomarker *** visualization included violin and t-SNE plots to illustrate biomarker expression across cell clusters such as oligodendrocytes,microglia,and ***,BV2 cells were exposed to amyloid-beta fragments to simulate Alzheimer’s disease,assessing the impact of exercise-induced cellular ***:Distinct cellular subtypes were identified:oligodendrocytes(MBP,St18),microglia(Dock8),and astrocytes(Aqp4,Gpc5).Sample OE was predominantly oligodendrocytes,while YE had more astrocytes,inhibitory neurons,and Canal-Retzius *** showed a significant presence of Olfm3+ganglion ***1 gene knockout revealed changes in SMAD family gene expression,which regulate *** stress levels were also ***:This profiling enhances our understanding of brain cellular functions and interactions,potentially informing targeted therapies in neurological *** may influence brain cell immune responses and cell death pathways by regulating specific gene expressions,offering new insights for treating neuroinflammation and degeneration.

关键词： single-cell transcriptomics brain tissue cellular subtypes biomarker expression neuronal diversity