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高速公路公募REITs底层资产价值评估研究

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山西财政税务专科学校学报 2024年第2期26卷 40-49页

作者：苏慧玲张迟合肥城市学院安徽巢湖238076 云南财经大学云南昆明650221

当前我国公路总里程位居世界第一位,但是仅有部分优质高速公路资产实现上市,仍有发展公募REITs的存量空间。通过分析高速公路公募REITs底层资产价值影响因素,采用弹性系数法对交通生成进行预测,根据经济社会发展速度的预测结果,测算交... 详细信息

当前我国公路总里程位居世界第一位,但是仅有部分优质高速公路资产实现上市,仍有发展公募REITs的存量空间。通过分析高速公路公募REITs底层资产价值影响因素,采用弹性系数法对交通生成进行预测,根据经济社会发展速度的预测结果,测算交通量增长率,并依据趋势交通分布预测和交通分配预测测算交通量增长率,以乐观方案和保守方案两个角度测算车流量,最后依据动态折现率构建全剩余寿命周期收益法模型确定高速公路公募REITs底层资产的价值,以期为高速公路公募REITs底层资产价值评估提供借鉴。

关键词：高速公路公募REITs 底层资产价值评估

一种新型可靠性抽样设计方法——基于经济优化视角

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统计学报 2024年第3期5卷 76-94页

作者：孙小素尚书钰山东工商学院统计学院山东烟台264005 山东工商学院经济学院山东烟台264005

混合截尾可以看作是一型截尾及二型截尾的拓展,常用于可靠性试验。然而,在规定时间上限内,当产品失效数远小于截尾数时,现有的可靠性抽样方案可能存在推断偏误。因此,结合已有研究,立足混合截尾,基于经济视角设计出混合截尾下一种新型... 详细信息

混合截尾可以看作是一型截尾及二型截尾的拓展,常用于可靠性试验。然而,在规定时间上限内,当产品失效数远小于截尾数时,现有的可靠性抽样方案可能存在推断偏误。因此,结合已有研究,立足混合截尾,基于经济视角设计出混合截尾下一种新型可靠性抽样方案。通过一系列对比分析,发现新方案可在保留原方案小样本量优点的同时增强判定的可靠性。从缩减企业检验成本的角度出发,应在试验前使检验时间上限尽可能小、截尾度尽可能大。从科学性及实用性角度综合考虑,该方案展现出较优的性质,值得推广使用。

关键词：可靠性抽样检验混合截尾经济性抽样成本

Commercial Application of the MIP-CGP Technology for Olefin Reduction in FCC Unit

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China Petroleum Processing & Petrochemical Technology 2009年第1期11卷 25-30页

作者： su Wensheng SINOPEC Beijing Yanshan Petrochemical Company Beijing 102500

The refinery of Yanshan Petrochemical Company has twice retrofitted a 2.0-Mt/a RFCC unit with the MIP-CGP technology aimed at maximization of isoparaffins/clean gasoline and increased output of propylene. By modifying the riser reactor with addition of the second reaction zone coupled with an added external catalyst cooler outside the regenerator and adoption of the CGP catalyst to control the cracking depth the refiners have realized the target of reducing olefin content in gasoline and increasing the yield of LPG. The results of retrofitting the RFCC unit have revealed that after revamp of FCC unit the yield of LPG was increased by 7.31%, the conversion rate was increased by 9.06%, and the total liquid yield was decreased by 0.3%. After revamp of the RFCC unit the olefin content in gasoline was reduced by 19.5 v%, and the RON rating of gasoline was increased by 0.7 units to meet the demand of Beijing municipality for manufacture of the Olympic clean gasoline.

关键词： fluid catalytic cracking olefins reduction technology application

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新型腐败:特征、诱因及惩治

学术探索 2024年第3期 46-56页

作者：苏江涛舒绍福中央党校(国家行政学院)政治和法律教研部北京100091

随着反腐败斗争持续深入,对新型腐败展开研究,旨在促进反腐效能的提升。新型腐败在主体、手段、危害、形式方面变异出了新特征,同时隐蔽性贯穿始终。通过归纳总结,发现腐败主体的心理扭曲、社会环境的客观变化以及反腐败制度资源不足构... 详细信息

随着反腐败斗争持续深入,对新型腐败展开研究,旨在促进反腐效能的提升。新型腐败在主体、手段、危害、形式方面变异出了新特征,同时隐蔽性贯穿始终。通过归纳总结,发现腐败主体的心理扭曲、社会环境的客观变化以及反腐败制度资源不足构成了新型腐败的诱因。数字时代新型腐败的惩治需要嵌入数字技术,探寻腐败变异规律,完善反腐败协调机制,加强教育引导。

关键词：新型腐败隐性腐败数字技术一体推进“三不腐”

地塞米松对前列腺癌PC-3细胞增殖、凋亡、迁移和侵袭的影响及机制研究

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现代肿瘤医学 2024年第9期32卷 1607-1614页

作者：苏瑞真郑思超广州医科大学附属第五医院药学部广东广州510799

目的:探讨地塞米松(DXMS)通过抑制细胞外信号调节激酶(ERK)/蛋白激酶B(AKT)信号通路对前列腺癌(PCa)PC-3细胞增殖、凋亡、迁移和侵袭的影响。方法:体外培养PCa细胞系PC-3,并分为对照组(二甲基亚砜)、DXMS低剂量组(0.01μmol/L DXMS)、D... 详细信息

目的:探讨地塞米松(DXMS)通过抑制细胞外信号调节激酶(ERK)/蛋白激酶B(AKT)信号通路对前列腺癌(PCa)PC-3细胞增殖、凋亡、迁移和侵袭的影响。方法:体外培养PCa细胞系PC-3,并分为对照组(二甲基亚砜)、DXMS低剂量组(0.01μmol/L DXMS)、DXMS中剂量组(0.1μmol/L DXMS)、DXMS高剂量组(1μmol/L DXMS)和DXMS高剂量+TPA组(1μmol/L DXMS和50μmol/L ERK/AKT信号通路激活剂TPA),采用qRT-PCR检测糖皮质激素受体(GR)表达;CCK-8检测细胞活性;流式细胞术检测细胞凋亡;Transwell检测细胞迁移和侵袭;Western blot检测GR、细胞凋亡(pro-caspase-3、cleaved-caspase-3、pro-caspase-9、cleaved-caspase-9、Bcl-2、Bax)、转移(Vimentin、N-cadherin、E-cadherin)及ERK、AKT蛋白表达。建立PC-3细胞异种移植裸鼠,当肿瘤直径达到0.5~0.6 cm时开始腹腔注射DXMS,共设置4组:对照组、DXMS低剂量组(1 mg/kg)、DXMS中剂量组(5 mg/kg)、DXMS高剂量组(25 mg/kg)。给药28 d后,测量肿瘤体积和重量,采用TUNEL染色观察组织凋亡,Western blot检测ERK、AKT蛋白表达。结果:随着DXMS剂量的增加,PC-3细胞活力、迁移率和侵袭率逐渐减小,GR mRNA和蛋白水平、凋亡率逐渐增大,cleaved caspase-3、cleaved caspase-9、Bax、E-cadherin表达逐渐升高,Bcl-2、Vimentin、N-cadherin表达逐渐降低,均呈显著的剂量依赖性(P<0.05)。TPA处理后,ERK和AKT磷酸化水平显著升高,能够明显逆转DXMS对PC-3细胞增殖、迁移和侵袭的抑制作用(P<0.05)。体内实验结果显示,DXMS可显著抑制PC-3移植瘤生长,促进其肿瘤组织细胞凋亡,抑制ERK和AKT磷酸化(P<0.05)。结论:DXMS可能通过抑制ERK/AKT信号通路加快PC-3细胞凋亡,阻碍细胞增殖、迁移和侵袭。

关键词：地塞米松 ERK/AKT信号通路前列腺癌增殖凋亡迁移侵袭

Prevention of Children Obesity: A Nutrition Education Intervention Model on Dietary Habits in Basic Schools in Chile

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Food and Nutrition Sciences 2015年第13期6卷 1221-1228页

作者： Fernando Vio Gabriela Fretes Edith Montenegro Carmen Gloria gonzález Judith Salinas Institute of Nutrition and Food Technology (INTA) University of Chile Santiago Chile

The objective of this study is to describe the process and results of a three-year project designed to create a nutrition education intervention model that promotes healthy dietary habits among teachers, students and their families. The methodology consisted in surveys, focus groups and Delphi method to assess teachers’, students’ and parents’ dietary habits, followed by an intervention for parents, and a participative nutritional education intervention with information and communication technologies applied to teachers, with the purpose to transfer nutritional knowledge and habits to school children and their families. Qualitative results were measured in all the phases of the project with positive results, and quantitative results demonstrated significant changes in food knowledge and healthy dietary habits in parents, teachers and students, compared with the control groups, without changes in students’ nutritional status during the short period of the intervention. With the results, an integral school nutrition education model in healthy eating was developed with children, parents, teachers and support for school management. This model should be applied in the educational sector to address the problem of unhealthy diet and childhood obesity that affects Chile and the world.

关键词： Nutrition Education School Health Obesity Prevention Dietary Habits Public Health Policy

Hepatoprotective effect of Geranium schiedeanum against ethanol toxicity during liver regeneration

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World Journal of Gastroenterology 2015年第25期21卷 7718-7729页

作者： Eduardo Madrigal-Santillán Mirandeli Bautista Juan A Gayosso-De-Lucio Yadira Reyes-Rosales Araceli Posadas-Mondragón ángel Morales-gonzález Marvin A Soriano-Ursúa Jazmín García-Machorro Eduardo Madrigal-Bujaidar Iselaálvarez-gonzález JoséA Morales-gonzález Laboratorio de Medicina de Conservación Escuela Superior de MedicinaInstituto Politécnico NacionalPlan de San Luis y Díaz MirónMéxico DF 11340México área Académica de Farmacia ICSaUniversidad Autónoma del Estado de HidalgoPachuca de Sotoestado de HidalgoCP 42000México Escuela superior de Cómputo Instituto Politécnico NacionalAv.Juan de Dios Bátiz s/n esquina Miguel Othón de MendizabalUnidad Profesional Adolfo López Mateos Departamento de Fisiología Escuela Superior de MedicinaInstituto Politécnico NacionalPlan de San Luis y Díaz MirónColonia Casco de Santo TomasDel.Miguel HidalgoMéxico DF 11340México Laboratorio de Genética Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalAv.Wilfrido MassieuUnidad A.López MateosZacatencoMéxico DF 07700México

AIM: To evaluate the effect of an extract of Geranium schiedeanum(Gs) as a hepatoprotective agent against ethanol(Et OH)-induced toxicity in rats. METHODS: Male Wistar rats weighing 200-230 g were subjected to a 70% partial hepatectomy(PH); they were then divided into three groups(groups 1-3). During the experiment, animals in group 1 drank only water. The other two groups(2-3) drank an aqueous solution of Et OH(40%, v/v). Additionally, rats in group 3 received a Gs extract daily at a dose of 300 mg/kg body weight intragastically. subsequently, to identify markers of liver damage in serum, alanine aminotransferase, aspartate aminotransferase, albumin and bilirubin were measured by colorimetric methods. Glucose, triglyceride and cholesterol concentrations were also determined. In addition, oxidative damage was estimated by measuring lipid peroxidation [using thiobarbituric-acid reactive substances(TBARS)] in both plasma and the liver and by measuring the total concentration of antioxidants in serum and the total antioxidant capacity in the liver. In addition, a liver mass gain assessment, total DNA analysis and a morpho-histological analysis of the liver from animals in all three groups were performed and compared. Finally, the number of deaths observed in the three groups was ***: Administration of the Geranium shiedeanum extract significantly reduced the unfavorable effect of ethanol on liver regeneration(restitution liver mass: PHEt OH group 60.68% vs PH-Gs-Et OH group 69.22%). This finding was congruent with the reduced levels of hepatic enzymes and the sustained or increased levels of albumin and decreased bilirubin in serum. The extract also modified the metabolic processes that regulate glucose and lipid levels, as observed from the serum measurements. Lower antioxidant levels and the liver damage induced by Et OH administration appeared to be mitigated by the extract, as observed from the TBARs(PH-Et OH group 200.14 mmol/mg vs PH-Gs-Et OH group 5

关键词： Geranium schiedeanum Liver regeneration Ethanol Free radicals Nuclear factor erythroid-2-relatedfactor 2

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中美科技金融发展比较与政策启示

全球科技经济瞭望 2024年第7期39卷 51-59页

作者：周代数苏牧中国科学技术发展战略研究院北京100038

立足中美博弈的特定背景,综合运用文献研究、数据对比和案例分析等方法,从金融供给侧、科技需求侧和科技金融协调机制等方面,将两国科技金融发展情况进行深入对比。得出结论,美国在科技需求侧和金融供给侧的体制机制和创新能力具有优势... 详细信息

立足中美博弈的特定背景,综合运用文献研究、数据对比和案例分析等方法,从金融供给侧、科技需求侧和科技金融协调机制等方面,将两国科技金融发展情况进行深入对比。得出结论,美国在科技需求侧和金融供给侧的体制机制和创新能力具有优势。在此基础上,提出促进中国科技金融高质量发展的政策建议,包括优化支持金融和科技发展制度环境,提高金融服务科技创新的质量和效率;加快金融工具创新,满足不同类型、不同生命周期企业的多元化、差异化融资需求;积极改善金融市场基础设施。

关键词：科技金融科技创新全生命周期多层次资本市场创业投资

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赋权改革与高校科技成果转化实践研究

龙岩学院学报 2024年第3期42卷 105-111页

作者：苏团徐志刚龙岩学院福建龙岩364000

在国家实施创新驱动发展战略背景下,职务科技成果赋权改革对于推进成果转移转化、服务区域经济具有重要作用,高校在赋权改革中承担着关键角色。但高校职务科技成果赋权改革过程中面临着可赋权的高价值和可转化的科技成果供给不足、激励... 详细信息

在国家实施创新驱动发展战略背景下,职务科技成果赋权改革对于推进成果转移转化、服务区域经济具有重要作用,高校在赋权改革中承担着关键角色。但高校职务科技成果赋权改革过程中面临着可赋权的高价值和可转化的科技成果供给不足、激励政策落地不足、决策管理机制尚待理顺、保障服务体系不够完善等共性问题。通过构建不同类别的职务科技成果赋权形式、完善政策体系、畅通赋权流程、健全转化保障服务体系等对策有利于深化高校职务科技成果赋权改革。

关键词：职务科技成果赋权改革科技成果转化