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Crustal thicknesses and Poisson's ratios beneath the Chuxiong-Simao Basin in the Southeast Margin of the Tibetan Plateau

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Earth and Planetary Physics 2019年第1期3卷 69-84页

作者： ziqi Zhang Yuan gao Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake Administration Institute of Earthquake Forecasting China Earthquake Administration

In the Southeast Margin of the Tibetan Plateau, low-velocity sedimentary layers that would significantly affect the accuracy of the H-κ stacking of receiver functions are widely *** this study, we use teleseismic waveform data of 475 events from 97 temporary broadband seismometers deployed by ChinArray Phase I to obtain crustal thicknesses and Poisson's ratios within the Chuxiong-Simao Basin and adjacent area, employing an improved method in which the receiver functions are processed through a resonance-removal filter, and the H-κ stacking is *** show that the crustal thickness ranges from 30 to 55 km in the study area, reaching its thickest value in the northwest and thinning toward southwest, southeast and *** apparent variation of crustal thickness around the Red River Fault supports the view of southeastern escape of the Tibetan *** thin crustal thickness in the zone between Chuxiong City and the Red River Fault indicates possible uplift of mantle in this *** positive correlation between crustal thickness and Poisson's ratio is likely to be related to lower crust *** of results obtained from different methods shows that the improved method used in our study can effectively remove the reverberation effect of sedimentary layers.

关键词： receiver functions sedimentary layer southeast margin of the Tibetan Plateau crustal thickness Poisson's ratio Chuxiong-Simao Basin

A review on single bubble gas–liquid mass transfer

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2707-2722页

作者： Yuyun Bao Jinting Jia Shuaifei Tong Zhengming gao ziqi Cai State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

It is common to empirically correlate volumetric mass transfer coefficient kLa for predicting gas–liquid mass transfer in industrial applications,and the investigation of single bubble mass transfer is crucial for a detailed understanding of mass transfer *** this work,experiments,models and simulations based on the experimental results were highlighted to elucidate the mass transfer between single bubbles and ambient *** experimental setups,measurement methods,the mass transfer of single bubbles in the Newtonian and the nonNewtonian liquid,models derived from the concept of eddy diffusion,the extension of Whitman’s,Higbie’s and Danckwerts’models,or dimensionless numbers,and simulation methods on turbulence,gas–liquid partition methods and mass transfer source term determination are introduced and commented *** people have a great knowledge on mass transfer between single bubbles and ambient liquid in single conditions,it is still insufficient when facing complex liquid conditions or some phenomena such as turbulence,contamination or non-Newtonian *** studies on single bubbles are required for experiments and models in various liquid conditions in future.

关键词： Gas-liguid mass transfer Single bubbles Mass transfer models Simulation Surfactant Non-Newtonian fluid

基于IGF-1/PI3K/Akt信号通路探讨象皮生肌膏对压力性损伤大鼠模型的影响及机制研究

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湖南中医药大学学报 2023年第9期43卷 1547-1552页

作者：郭李梦彭露高子琪刘彬廖若夷湖南中医药大学第一附属医院湖南长沙410007 湖南中医药大学湖南长沙410208

目的通过动物实验观察并基于类胰岛素一号生长因子(insulin-like growth factors-1,IGF-1)/磷脂酰肌醇3激酶(phosphoinositide3-kinase,PI3K)/蛋白激酶B(protein kinase B,Akt)信号通路探讨象皮生肌膏对压力性损伤大鼠模型的影响。方法将40只SD大鼠(SPF级,雌雄各半)复制压力性损伤大鼠模型,造模成功后随机均分为模型组(生理盐水纱布外敷)、阳性对照组(三乙醇胺乳膏外用)、象皮生肌组(象皮生肌膏外用)、联合给药组(三乙醇胺乳膏与象皮生肌膏联合外用)。另取10只健康SD大鼠作为空白组,仅同部位置入磁性装置,不予施加压力。实验过程中,每天记录各组大鼠愈合情况。实验结束时,HE染色法观察创面病理性损伤情况,ELISA法检测血清肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-1β(interleukin-1β,IL-1β)、白细胞介素-6(interleukin-6,IL-6)水平,Western blot法及RT-PCR法检测创面组织中PI3K、Akt、哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)、IGF-1蛋白及mRNA的表达情况。结果与空白组比较,模型组大鼠创面面积明显增大(P<0.05);与模型组比较,阳性对照组、象皮生肌组、联合给药组大鼠的创面面积均减小(P<0.05);与阳性对照组及象皮生肌组比较,联合给药组创面面积缩小(P<0.05)。HE染色结果显示,空白组大鼠创面病理结构较完整,组织细胞排列较规则且病理致密,未见明显组织坏死碎片、水肿及炎性浸润;模型组可见明显的肌肉纤维坏死碎片,空泡变性,纤维肿大、横断;阳性对照组、象皮生肌组、联合给药组可见不同程度的病理缓解。与空白组比较,模型组大鼠血清炎性因子TNF-α、IL-1β、IL-6水平明显升高(P<0.05),PI3K、Akt、mTOR、IGF-1蛋白及mRNA表达明显升高(P<0.05);与模型组比较,阳性对照组、象皮生肌组、联合给药组大鼠血清炎性因子TNF-α、IL-1β、IL-6水平显著降低(P<0.05),PI3K、Akt、mTOR、IGF-1蛋白及mRNA表达显著升高(P<0.05);与阳性对照组及象皮生肌组比较,联合给药组血清炎性因子TNF-α、IL-1β、IL-6水平以及PI3K、Akt、mTOR、IGF-1蛋白及mRNA表达水平明显降低(P<0.05)。结论象皮生肌膏可改善压力性损伤大鼠模型创面病理情况,可能与象皮生肌膏上调IGF-1/PI3K/Akt信号通路相关蛋白表达,抑制炎性因子表达相关。

关键词：压力性损伤象皮生肌膏 IGF-1/PI3K/Akt信号通路血清炎性因子机制研究

Gas dispersion and solid suspension in a three-phase stirred tank with triple impellers

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Chinese Journal of Chemical Engineering 2020年第5期28卷 1195-1202页

作者： Hanbin Wang Zhengming gao Bingjie Wang Yuyun Bao ziqi Cai State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

The hydrodynamics is still not fully understood in the three-phase stirred tank equipped with multi-impeller due to the intensive interaction between *** this work,the solid critical suspension speed(NJSG),relative power demand(RPD)and overall gas holdup(ε_G)were measured in an air–water–glass beads stirred tank equipped with multi-impeller,which consists of a parabolic blade disk turbine below two down-pumping *** show that either the NJSGor the specific power consumption increases when increasing the volumetric solid concentration or superficial gas *** changes less than 10%when solid volumetric concentration ranges from 0 to 15%.ε_G decreases with the increase of solid concentration,and increases with the increase of both superficial gas velocity and the total specific power *** quantitative correlations of NJSG,RPD andεGwere regressed as the function of superficial gas velocity,specific power consumption,Froude number and gas flow number,in order to provide the reference in the design of such three-phase stirred tank with similar multi-impellers.

关键词： Solid suspension Gas holdup Gas-liquid-solid system Stirred reactor

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大豆品种对其理化品质及功能性质的影响

农产品加工 2023年第3期 15-18,22页

作者：崔洋冷思琦高梓淇高媛黄雪莹白宇航绥化学院黑龙江绥化152061

对东北多个特色品种大豆的理化品质及功能性质进行研究,结果表明大豆蛋白含量平均值为42.83%,水溶性蛋白含量平均值为24.16%,粗脂肪含量平均值为18.2%,其中黑河43、垦丰16、华疆4号及疆莫豆1号为高脂高蛋白的油脂大豆品种,且水分含量均... 详细信息

对东北多个特色品种大豆的理化品质及功能性质进行研究,结果表明大豆蛋白含量平均值为42.83%,水溶性蛋白含量平均值为24.16%,粗脂肪含量平均值为18.2%,其中黑河43、垦丰16、华疆4号及疆莫豆1号为高脂高蛋白的油脂大豆品种,且水分含量均低于13%。通过对不同大豆品种的总异黄酮、多酚含量进行检测,结果表明黑河43、垦丰16及疆莫豆1号3个品种来源的大豆不仅具有高蛋白更具有较高的生物活性成分,而通过对大豆粉的功能性质的研究,进一步说明垦丰16及疆莫豆1号是具有较高功能活性及功能特性的大豆工业制品的良好来源。

关键词：大豆品种理化品质功能性质

山地旅游景区落石灾害风险评估—以浙江三门县蛇蟠岛景区为例

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灾害学 2024年第2期39卷 153-162页

作者：高丙丽周凯威蔡智云李朗杨志法郑子琦西安科技大学建筑与土木工程学院陕西西安710054 中国电建集团西北勘测设计研究院有限公司陕西西安710043 机械工业勘察设计研究院有限公司陕西西安710043 中国科学院地质与地球物理研究所北京100029 浙江蛇盘岛旅游开发有限公司浙江三门317100

以浙江省三门县蛇蟠岛景区为研究背景,通过现场勘察与数值分析等手段,全面分析了山地旅游景区落石灾害的影响因素,基于RHRS风险评分方法建立了山地旅游景区落石灾害风险评估体系。研究结果表明:古洞室群围岩的严重扰动、岩石的风化作用... 详细信息

以浙江省三门县蛇蟠岛景区为研究背景,通过现场勘察与数值分析等手段,全面分析了山地旅游景区落石灾害的影响因素,基于RHRS风险评分方法建立了山地旅游景区落石灾害风险评估体系。研究结果表明:古洞室群围岩的严重扰动、岩石的风化作用、相邻洞室公共墙体的凿去为落石的三个主要影响因素;基于RHRS风险评分方法将落石灾害风险划分为5个等级,并在此基础上建立了山地旅游景区落石灾害风险评估体系;工程实践表明,建立的山地旅游景区落石灾害风险评估体系分析结果可靠,该评价体系可为落石灾害的发生提供预警及治理提供依据。

关键词：山地旅游景区落石灾害数值分析风险评估体系 RHRS 浙江三门

脑电神经反馈:一种前景广阔的注意力训练方法

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心理学探新 2023年第6期43卷 509-515页

作者：周茂洋高子奇史康刘建军梁伟毋琳张俊鹏武圣君军事医学科学院北京100850 空军93671部队南阳474350 空军军医大学医学心理学系西安710032 空军军医大学教务处西安710032 空军第986医院门诊部西安710032

脑电神经反馈(EEG-NF)是一种注意力训练中的热门方法因其安全无创、无副作用、易于联合应用等优点,受到越来越广泛的关注,在注意缺陷障碍(ADHD)的治疗等方面表现优异。然而,目前这种方法在注意力训练中的应用还比较局限。抱着对脑电神... 详细信息

脑电神经反馈(EEG-NF)是一种注意力训练中的热门方法因其安全无创、无副作用、易于联合应用等优点,受到越来越广泛的关注,在注意缺陷障碍(ADHD)的治疗等方面表现优异。然而,目前这种方法在注意力训练中的应用还比较局限。抱着对脑电神经反馈广阔前景的预期,本文对脑电神经反馈训练中出现的重点问题进行了总结,描绘了这种方法未来的前景和改进方向,以期在未来更好的应用这种技术。

关键词：神经反馈脑电注意力训练注意缺陷障碍

Mass transfer area in a multi-stage high-speed disperser with split packing

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Chinese Journal of Chemical Engineering 2019年第4期27卷 772-780页

作者： Tao Ai Aslam M.Mudassar ziqi Cai Zhengming gao State Key Laboratory of Chemical Resource Engineering School of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

In this study, the mean droplet diameter in the cavity zone and the total mass transfer area of a multi-stage highspeed disperser(HSD) reactor with different packing combinations were measured and evaluated. The effects of rotational speed and packing radius, as well as the packing ring radius and numbers, on the mean droplet diameter and the total mass transfer area were evaluated. A model was established to calculate the mass transfer area in the cavity zone in the HSD reactor, and it was found that the packings contribute 61%–82% of the total mass transfer area. A correlation for predicting the mass transfer area in the packing zone was regressed by the dimensionless analysis method. An enhancement factor based on the mass transfer area in the packing zone was proposed to evaluate the effect of packing combination on mass transfer area. Two optimum packing combinations were proposed in consideration of the mean droplet diameter and the enhancement factor.

关键词： High-speed disperser Mean droplet diameter Mass transfer area Split packing

Droplet characteristics in the multi-staged high speed disperser with single inlet

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Chinese Journal of Chemical Engineering 2019年第8期27卷 1756-1764页

作者： Ao Nie ziqi Cai Zhengming gao Zhimiao Wang Archie Eaglesham State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Huntsman Polyurethanes B3078 EverbergBelgium

Droplet characteristics in the cavity zone of a multi-staged high speed disperser with single inlet were studied in this paper. The influences of both the operating and structural parameters on the mean droplet diameter, size distribution and liquid flux distribution were quantitatively analyzed. The result showed that the mean droplet diameter decreased with the increase of rotational speed and the number of rotors;whilst there is little influence on the inlet flow rate. In the experimental range, the minimum value of mean droplet diameter is 0.57 mm, 0.48 mm, 0.41 mm in the two-staged, three-staged and four-staged rotors, respectively. The Rosin–Rammler(R–R) distribution could describe the droplet size distribution appropriately, and it became uniform with the increase of rotational speed and the number of rotor, while the inlet flow rate had little effect on the droplet size distribution. The liquid flux distribution curves were always unimodal. With the increase of rotational speed, the location of maximum liquid flux ratio moved from zone 3 to zone 4 and this value decreased from 22.1% to 18.1%. Using Coefficient of Variation(CV) to indicate the uniformity of liquid flux distribution, it was found that the CV decreases from 47.5% to 22.7%when the number of rotor increased from 2 to 4.

关键词： Droplet High speed disperser Size distribution Liquid flux distribution