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逐步回归法优化填料改性与助剂提高烟草薄片浆料留着率的研究

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中国造纸 2024年第5期43卷 143-150,164页

作者：俞海军李刚马扩彦陈昆燕周学政唐杰杜红毅张玲玲周沫希寇明钰重庆中烟工业有限责任公司技术中心重庆400060 山东瑞博斯烟草有限责任公司山东临沂276000

采用了均匀实验设计方法和多元二次回归方程,研究了不同填料改性剂(烟叶碎片浆或针叶木浆、阳离子淀粉、硬脂酸钠、六偏磷酸钠)以及三元助留剂(壳聚糖、阳离子瓜尔胶、膨润土)对浆料留着率和碳酸钙分布均匀性的影响。结果表明,各因子贡... 详细信息

采用了均匀实验设计方法和多元二次回归方程,研究了不同填料改性剂(烟叶碎片浆或针叶木浆、阳离子淀粉、硬脂酸钠、六偏磷酸钠)以及三元助留剂(壳聚糖、阳离子瓜尔胶、膨润土)对浆料留着率和碳酸钙分布均匀性的影响。结果表明,各因子贡献率中,壳聚糖、瓜尔胶、膨润土和针叶木浆更有利于提高浆料留着率。在烟叶碎片浆和针叶木浆的双因素交互作用图中,存在5种不同的变化趋势。大生产(不改性)烟草薄片的浆料留着率为68.8%,抗张强度为0.378 kN/m。通过回归方程优化参数并经实验验证,采用烟叶碎片浆和针叶木浆改性,再结合多元助剂,所得烟草薄片的浆料留着率分别达92.9%和94.9%,抗张强度分别提高了30.2%和28.8%。碳酸钙包裹烟叶碎片浆或针叶木浆形成的复合体,均能相对均匀分散在烟草薄片中。

关键词：烟草薄片因子贡献率微观结构留着率分布均匀性抗张强度

维普期刊数据库博看期刊

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新型功能性植物盐美白功效的体外评价

精细化工 2020年第5期37卷 1002-1009页

作者：严雅丽周沫希姜春鹏赵奕竹张英浙江大学生物系统工程与食品科学学院食品科学与营养系浙江杭州310058 上海绿瑞生物科技有限公司上海201203

对松盐、梅盐与竹盐的美白功效进行了体外评价,分别研究其对体外酪氨酸酶的单酚酶和二酚酶活性的抑制作用,并以熊果苷为阳性对照,采用体外培养的B16黑素瘤细胞模型探究其对胞内酪氨酸酶活性、细胞增殖及迁移的影响。结果表明,植物盐元... 详细信息

对松盐、梅盐与竹盐的美白功效进行了体外评价,分别研究其对体外酪氨酸酶的单酚酶和二酚酶活性的抑制作用,并以熊果苷为阳性对照,采用体外培养的B16黑素瘤细胞模型探究其对胞内酪氨酸酶活性、细胞增殖及迁移的影响。结果表明,植物盐元素组成丰富,且水溶液呈碱性,松盐、竹盐、梅盐对酪氨酸酶活性表现出极显著的浓度依赖的抑制作用(p<0.01),当这3种植物盐水溶液的质量浓度为50.0 g/L时,它们对酪氨酸酶单酚酶抑制率分别为97.1%、94.8%、48.2%,对二酚酶的抑制率均高于92.0%;与原盐相比,5.0g/L的植物盐对B16细胞生长抑制作用不明显,但会抑制其横向迁移;植物盐对B16细胞胞内酪氨酸酶活性抑制作用优于熊果苷,5.0g/L的梅盐组的细胞内酪氨酸酶活性仅有8.76%,抑制效果好于松盐、竹盐。所研究的植物盐可以抑制酪氨酸酶的活性,且对B16细胞无附加毒性,显示出作为一种无机酪氨酸酶抑制剂的潜力,在人体美白方面有较好的潜在应用价值。

关键词：功能性植物盐美白作用酪氨酸酶 B16细胞抑制剂日化原料

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紫外指纹图谱在烟丝质量稳定性监测中的应用

食品工业 2022年第8期43卷 170-173页

作者：周沫希陈云璨蒋昊张玲玲唐杰重庆中烟工业有限责任公司技术中心重庆400060

建立一种计算紫外光谱相似度的方法实现对烟丝质量的控制。用紫外-可见分光光度计对2021年5—9月共50批次天子(中支)烟丝进行光谱采集,采用一阶求导与Norris相结合的预处理方式,以相似度匹配建立其指纹图谱模型库,选取其他14个品牌的样... 详细信息

建立一种计算紫外光谱相似度的方法实现对烟丝质量的控制。用紫外-可见分光光度计对2021年5—9月共50批次天子(中支)烟丝进行光谱采集,采用一阶求导与Norris相结合的预处理方式,以相似度匹配建立其指纹图谱模型库,选取其他14个品牌的样品对指纹图谱库进行验证。建立的天子(中支)紫外模型,验证显示其准确率为100%。同品牌相似度较高(>95),而其他品牌样品与模型库的相似度较低(<95),表明利用天子(中支)指纹图谱库对样品进行识别的可行性和准确性。此模型可用于判断同产品不同批次的稳定性,也可用于评价两个样品之间的相似程度。试验为建立科学合理的控制和评价烟丝产品稳定性及均质化的方法提供数据支撑。

关键词：烟丝紫外光谱相似度预测模型

Dynamic Effect of Landslides Triggered by Earthquake:A Case Study in moxi Town of Luding County,China

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Journal of Earth Science 2024年第1期35卷 221-234页

作者： Hongfu zhou Fei Ye Wenxi Fu Bin Liu Tian Fang Rui Li Chengdu Center China Geological SurveyChengdu 610081China State Key Laboratory of Hydraulics and Mountain Rivers Protection Sichuan UniversityChengdu 610065China Sichuan Geological Survey Chengdu610081China Shandong University of Science and Technology Qingdao 266590China

The dynamic effect is a very important issue widely debated by scholars when studying the genetic and disaster-causing mechanisms of earthquake-triggered ***,the dynamic effect mechanism and phenomena of earthquake-triggered landslides were summarized in this ***,the primary types of dynamic effects were further used to interpret the Mogangling landslide in moxi Town of Luding County,China.A field investigation,remote sensing,numerical calculation and theoretical analysis were carried out to illustrate the failure mechanism of slope rock masses affected by *** interaction between seismic waves and slope rock masses and the induced dynamic effect of slope rock masses were primarily accounted for in the *** slope topography,rock mass weathering and unloading characteristics,river erosion,regional seismogenic structure,and rock mass structure characteristics were also *** results showed that the formation of the Mogangling landslide was mainly related to the high amplification effect of seismic acceleration and back slope effects,interface dynamic stress effects,and double-sided slope effects of seismic waves caused by the catastrophic Ms 7.75 moxi Earthquake in *** principles for the site and route selection of large-scale infrastructure in the planning stage and the scientific prevention of seismic geological disasters were proposed on the basis of the dynamic effect of earthquake-induced landslides.

关键词： dynamic effect coupling of endogenic and exogenic processes landslides earthquakes disaster prevention

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指纹图谱在烟草行业中应用

食品工业 2023年第10期44卷 234-239页

作者：周沫希吕祥敏敬婧易虹宇张玲玲唐游重庆中烟工业有限责任公司重庆400060

指纹图谱技术利用现代化的检测手段,对物质进行成分鉴定分析,被广泛应用于中药、食品领域。该技术在烟草行业也有长足的发展,就DNA指纹图谱技术在烟草育种过程中的应用、光谱和色谱指纹图谱技术在烟草产品质量控制及烟用香精香料评价领... 详细信息

指纹图谱技术利用现代化的检测手段,对物质进行成分鉴定分析,被广泛应用于中药、食品领域。该技术在烟草行业也有长足的发展,就DNA指纹图谱技术在烟草育种过程中的应用、光谱和色谱指纹图谱技术在烟草产品质量控制及烟用香精香料评价领域的应用进行综述;介绍几种常用的指纹图谱分析方法,如化学模式识别及相似度评价等;对指纹图谱技术在烟草行业的发展进行展望,以期为烟草产品质量控制提供一定借鉴。

关键词：烟草指纹图谱质量控制产品评价

Economic Development Status of the Countries along the Belt and Road and Their Correlations with Population and Carbon Emissions

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Journal of Resources and Ecology 2020年第6期11卷 539-548页

作者： ZHONG Yang LIN Aiwen zhou Zhigao HE Lijie YUAN moxi School of Resource and Environmental Sciences Wuhan UniversityWuhan 430079China The Key Laboratory of Geographic Information System Wuhan UniversityWuhan 430079China Department of Geography and Resource Management The Chinese University of Hong KongHong Kong 999077China

The construction of the Silk Road Economic Belt and the 21st Century Maritime Silk Road are important measures for allowing China to expand its opening up to the outside world under the background of economic *** on this consideration,and from the perspective of geo-economics,this study uses a variety of mathematical statistical methods to analyze the economic development status and differences among the 30 countries along the Belt and *** addition,the correlations between GDP,population and carbon emissions in these countries are also *** results show that the current economic development levels of the countries along the Belt and Road are quite variable;the gaps between the indicators of the economic development of the countries along the Belt and Road are convergent;the GDP,population,and carbon emissions of the countries along the Belt and Road each showed an overall upward trend during the study period,and the changes in these three values showed significant *** all countries,the correlation coefficients between GDP and population(0.989),between GDP and carbon emissions(0.995),and between population and carbon emissions(0.993),all indicate that the correlations between GDP,population and carbon emissions are very *** them,GDP has the highest correlation with carbon emissions,reaching *** analysis shows that the value of R^2 reached 0.995,indicating that the regression fitting effect is very good and the calculation result is highly *** on these results,this paper proposes the following two suggestions:(1)Promoting the Belt and Road initiative should handle the relationship between developing and developed countries;and(2)Promoting the Belt and Road initiative should also be linked to China’s domestic regional development strategy.

关键词： the Belt and Road geo-economics correlation globalization China

鲜水河断裂带地震矩亏损的空间分布及2022年泸定M 6.8级地震

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地球科学 2024年第2期49卷 425-436页

作者：尹力周本刚任治坤罗纲中国地震局地质研究所地震动力学国家重点实验室北京100029 武汉大学测绘学院湖北武汉430079

2022年9月5日泸定M 6.8级地震发生在鲜水河断裂带南端的磨西断裂.该地震的发震机制以及未来该断裂段是否仍会发生强震是值得关注的科学问题.拟从地震能量积累与释放的角度来解释该地震的发震原因以及鲜水河断裂带未来的发震潜力.通过对... 详细信息

2022年9月5日泸定M 6.8级地震发生在鲜水河断裂带南端的磨西断裂.该地震的发震机制以及未来该断裂段是否仍会发生强震是值得关注的科学问题.拟从地震能量积累与释放的角度来解释该地震的发震原因以及鲜水河断裂带未来的发震潜力.通过对比地震矩积累与释放的时空分布,发现地震大都发生在地震矩亏损的段落,并有填补地震矩亏损的趋势.此外,鲜水河断裂带至今存在3个显著的地震矩亏损段,均具发生6.5级以上地震的潜力.1786年康定M 7.6级地震发生之后,经过两百多年时间的积累,足以发生M 6.5级以上地震,而泸定M 6.8级地震仅释放了磨西断裂上部分的地震矩亏损,未来该断裂段仍具有发生强震的可能.

关键词：地震矩亏损鲜水河断裂带泸定M 6.8级地震地震危险性分析

The slip rate and strong earthquake recur-rence interval on the Qianning-Kangding segment of the Xianshuihe fault zone

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Acta Seismologica Sinica(English Edition) 2001年第3期14卷 263-273页

作者： zhou Rong-jun Seismological Bureau of Sichuan Province Chengdu China

The geometry of the Qianning-Kangding segment of the Xianshuihe fault zone is quite complex, and it is composed of four secondary-faults, i.e., the Yalahe fault, Selaha-Kangding fault, Zeduotang fault and moxi fault. On this segment, three strong earthquakes with M greater than or equal 7.0 occurred in 1725, 1786 and 1955, respectively. Based on a study of fault landform and geochronology (14C and Thermoluminesense), this paper documents the average horizontal slip rates during the late-Quaternary on all the secondary-faults of the Qianning-Kangding segment as follows: Yalahe fault: (2.0±0.2) mm/a; Selaha-Kangding fault: (5.5±0.6) mm/a; Zeduotang fault: (3.6±0.3) mm/a; moxi fault: (9.9±0.6) mm/a. The results from the investigation of surface ruptures of historical earthquakes, coseismic-slip and paleo-earthquakes show that the strong-earthquake recurrence intervals are thousands of years on the Yalahe fault, and 230 to 350 years on the Selaha-Kangding and Zeduotang faults. In the next one hundred years, the recurrence of a strong-earthquake on these faults appears impossible. However, the strong-earthquake recurrence interval on the moxi fault is about 300 years. Up to now, it has been 214 years since the last earthquake (magnitude 7 3/4) occurred in 1786, therefore, this fault is now approaching the condition favorable for the next strong earthquake recurrence.

关键词： slip rate recurrence interval fault landform paleo-earthquake seismic potential P315.72 + 5

基于“火郁发之”理论治疗急性期带状疱疹的临床疗效观察

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内蒙古中医药 2024年第6期43卷 55-59页

作者：杜晋周建伟西南医科大学中西医结合学院四川泸州646099 四川省中医药科学院四川成都610041

目的:观察基于“火郁发之”理论采用不同灸量治疗急性期带状疱疹(Herpes Zoster,HZ)的临床疗效观察。方法:选取急性期带状疱疹60例患者随机分成高灸量组(n=30例)、低灸量组(n=30例)两组,分析比较两组患者临床疗效及治疗后带状疱疹后神经... 详细信息

目的:观察基于“火郁发之”理论采用不同灸量治疗急性期带状疱疹(Herpes Zoster,HZ)的临床疗效观察。方法:选取急性期带状疱疹60例患者随机分成高灸量组(n=30例)、低灸量组(n=30例)两组,分析比较两组患者临床疗效及治疗后带状疱疹后神经痛(postherpetic heuralgia,PHN)发生率、视觉模拟量表评分(visual analogue scale/Score,VAS)、匹兹堡睡眠质量指数评分(pittsburgh sleep quality index,PSQI)、心理状态评分(抑郁自评量表(self-ratingdepressionscale,SDS)),焦虑自评量表(self-rating anxiety scale,SAS)、皮损愈合指标,及治疗前后、治疗过程中进行安全性观察。结果:治疗后,高灸量组患者临床总有效率(96.7%,29例/30例)高于低灸量组(93.3%,28例/30例),两组总有效率比较差异具有统计学意义(P<0.05),且PHN发生率高灸量组低于低灸量组,两组在疼痛评分、睡眠评分、心理评分、脱痂时间均较治疗前有所下降,但高灸量组下降幅度更大,差异具有统计学意义(P<0.05)。两组患者均无明显不良反应。结论:高灸量组和低灸量组治疗急性期带状疱疹均有效果且安全有效,但高灸量组在缩短病程、缓解疼痛,改善日常生活质量优于低灸量组。

关键词：急性期带状疱疹火郁发之灸量临床疗效