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Journal of Natural Gas Chemistry 2011年第3期20卷 261-265页

作者： Ruchao wei Chunyi Li Chaohe Yang honghong Shan State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266555 Shandong China

One type of ZSM-5 zeolite with large partical size was prepared and characterized by XRD, SEM, N2 adsorption-desorption, XRF, Py-IR and NH3-TPD techniques. Effects of ammonium exchange and SiO2/Al2O3 molar ratios on the reaction of methanol to propylene （MTP） over Na-ZSM-5 and H-ZSM-5 zeolites have been studied in a fixed-bed flow reactor under the operating conditions of T = 500 °C, P = 1 atm, and WHSV = 6 h-1. Ammonium exchange led to a rapid decrease in Na content for Na-ZSM-5 zeolite. The reaction results indicated that Na-ZSM-5 and H-ZSM-5 with different SiO2/Al2O3 molar ratios all exhibited high activity for methanol conversion. Ammonium exchange and the decreased SiO2/Al2O3 molar ratio of ZSM-5 zeolite led to an increase both in strong acid sites and weak acid sites. Na-ZSM-5 with high SiO2/Al2O3 molar ratio was favorable for the formation of propylene. The highest propylene selectivity （45.9%） was obtained over Na-ZSM-5 zeolite catalyst with SiO2/Al2O3 molar ratio of 220.

关键词： ZSM-5 MTP propylene ammonium exchange acidity

河北省麻山药种植区土壤重金属元素空间分布特征

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水土保持通报 2015年第5期35卷 227-231页

作者：未红红杨浩然刘会玲张毅功河北农业大学资源与环境科学学院河北保定071001

[目的]明确河北省麻山药种植区土壤重金属的空间分布特征以及土壤性状、社会经济因素对土壤重金属含量的影响。[方法]在研究区内通过网格法均匀分布取样获取土壤样本,室内试验得到样本的各元素含量;结合SPSS和ArcGIS 9.3软件的数据相关... 详细信息

[目的]明确河北省麻山药种植区土壤重金属的空间分布特征以及土壤性状、社会经济因素对土壤重金属含量的影响。[方法]在研究区内通过网格法均匀分布取样获取土壤样本,室内试验得到样本的各元素含量;结合SPSS和ArcGIS 9.3软件的数据相关性、地统计学、空间分析等方法进行分析研究。[结果]从相关系数来看,除Cr以外,其他4种重金属在研究区内均呈现正相关关系;土壤数据中Cr,Pb,As服从正态分布,Cd,Hg经对数转换后服从正态分布;通过元素的块金效应分析发现,元素Hg在研究区的空间相关性最弱。[结论]河北省麻山药种植区土壤重金属含量与母质、土壤质地、有机质含量以及工业化、城市化和农村集约化程度密切相关。

关键词：重金属空间变异地统计学麻山药 GIS

SPECT联合MSCT在诊断早期隐匿性肋骨骨折中的法医临床学价值

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中国司法鉴定 2022年第4期 48-53页

作者：虢洪松李长征韦红红姚媛媛王飞舟济宁医学院法医学与医学检验学院山东济宁272067 济宁市兖州区DNA检验中心山东济宁272000 泗水县公安局刑警大队山东济宁273000

目的探讨单光子发射计算机断层显像(SPECT)和多层螺旋CT(MSCT)多种重建技术在早期隐匿性肋骨骨折诊断中的法医学应用价值。方法选取51例因胸部外伤怀疑存在隐匿性肋骨骨折的患者行回顾性分析,比较SPECT、MSCT及常规CT、X线在伤后第1~3... 详细信息

目的探讨单光子发射计算机断层显像(SPECT)和多层螺旋CT(MSCT)多种重建技术在早期隐匿性肋骨骨折诊断中的法医学应用价值。方法选取51例因胸部外伤怀疑存在隐匿性肋骨骨折的患者行回顾性分析,比较SPECT、MSCT及常规CT、X线在伤后第1~3周、第4~6周内在确诊隐匿性肋骨骨折的差异是否存在统计学意义。结果在伤后第1~3周内,SPECT与MSCT之间存在统计学意义(P0.05)。MSCT在伤后第1~3周内与第4~6周之间的差异存在统计学意义(P0.05)。结论隐匿性肋骨骨折的最佳复查时间窗为伤后第4~6周,首选MSCT作为复查方式。SPECT具有高灵敏度的优点,与MSCT联合应用可以显著降低漏诊率和误诊率,起到相互补充的作用,在法医临床鉴定中具有重要的应用价值。

关键词： SPECT MSCT 隐匿性肋骨骨折法医临床学

Development of Mn-Si-MEL as a bi-functional adsorption-catalytic oxidation material for VOCs elimination

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Chinese Chemical Letters 2022年第6期33卷 3087-3090页

作者： Qingjun Yu Yongchao Feng Jinghui wei Xiaolong Tang honghong Yi School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Recycling of Typical Industrial Pollutants Beijing 100083China

Mn-Si-MEL zeolite was developed as a bi-functional adsorption-catalytic oxidation material for volatile organic compounds(VOCs)elimination due to its good hydrophobicity&good organophileproperty brought by the substitution of Mn for Al in zeolite and the superior catalytic oxidation property endowed by the existence of Mn *** Mn-Si-MEL samples were obtained by introducing Mn to MEL crystallization system via different *** was found the incorporated Mn ways have a significant effect on the behavior of Mn being involved in the crystallization of MEL and finally influenced the distribution of Mn in zeolite as well the physicochemical properties of product *** seeding method(MnS2(Seed))is favorable for the good incorporation and uniform distribution of Mn in zeolite while both recrystallization method(Mn-S2(RC))and direct synthesis method(Mn-S2(DH))are favorable for obtaining more reducible Mn species and surface adsorbed oxygen *** Mn amount incorporated into zeolite follows Mn-S2(RC)(1.96 wt%)>Mn-S2(Seed)(1.07 wt%)≈Mn-S2(DH)(0.97 wt%),the adsorption capacity of various samples follows Mn-S2(Seed)(83.3μmol/g)≈Mn-S2(RC)(82.1μmol/g)>Mn-S2(DH)(76.1μmol/g),while the catalytic oxidation ability of three samples follows Mn-S2(RC)≈Mn-S2(DH)>Mn-S2(Seed).Furthermore,Mn-S2(RC)which exhibits both superior adsorption capacity and catalytic oxidation ability shows good hydrophobicity and superior recyclability,demonstrating its great potential to be applied in the VOCs elimination by an enrichment-degradation route.

关键词： Bifunctional Adsorption Catalytic combustion VOCs MEL Mn-Si

Mesoporous molecular sieve-based materials for catalytic oxidation of VOC: A review

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Journal of Environmental Sciences 2023年第3期125卷 112-134页

作者： wei Gao Xiaolong Tang honghong Yi Shanxue Jiang Qingjun Yu Xizhou Xie Ruijie Zhuang Department of Environmental Science and Engineering School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China

As the main contributor of the formation of particulate matter as well as ozone, volatile organic compounds(VOCs) greatly affect human health and the environmental quality. Catalytic combustion/oxidation has been viewed as an efficient, economically feasible and environmentally friendly way for the elimination of VOCs. Supported metal catalyst is the preferred type of catalysts applied for VOCs catalytic combustion because of the synergy between active components and support as well as its flexibility in the composition. The presence of support not only plays the role of keeping the catalyst with good stability and mechanical strength, but also provides a large specific surface for the good dispersion of active components, which could effectively improve the performance of catalyst as well as decrease the usage of active components, especially the noble metal amount. Mesoporous molecular sieves, owing to their large surface area, unique porous structures, large pore size as well as uniform pore-size distribution, were viewed as superior support for dispersing active components. This review focuses on the recent development of mesoporous molecular sieve supported metal catalysts and their application in catalytic oxidation of VOCs. The effect of active component types, support structure, preparation method, precursors, etc. on the valence state, dispersion as well as the loading of active species were also discussed and summarized. Moreover, the corresponding conversion route of VOCs was also *** review aims to provide some enlightment for designing the supported metal catalysts with superior activity and stability for VOCs removal.

关键词： Volatile organic compound Mesoporous molecular sieves Supported catalyst Catalytic oxidation Reaction mechanism Influencing factors

无线远程监控镇痛泵在老年患者全膝关节置换术后PCIA中的应用效果

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保健医学研究与实践 2024年第7期21卷 96-101页

作者：魏红红高翠刘婷婷姜嫚王异汪晨李逸云空军军医大学第一附属医院麻醉与围术期医学科西安710032 西安市人民医院麻醉与围术期医学中心西安710100

目的探讨无线远程监控镇痛泵系统和普通电子镇痛泵系统在老年患者全膝关节置换术后静脉自控镇痛(PCIA)中的应用效果,以期为临床治疗提供参考。方法选取2022年1月—2023年12月于空军军医大学第一附属医院行全膝关节置换术并在术后行PCIA... 详细信息

目的探讨无线远程监控镇痛泵系统和普通电子镇痛泵系统在老年患者全膝关节置换术后静脉自控镇痛(PCIA)中的应用效果,以期为临床治疗提供参考。方法选取2022年1月—2023年12月于空军军医大学第一附属医院行全膝关节置换术并在术后行PCIA的老年患者92例为研究对象。采用随机数字表法将患者分别纳入无线镇痛组和普通镇痛组,每组46例。无线镇痛组患者术后静脉接无线远程监控镇痛泵,普通镇痛组患者接普通电子镇痛泵。比较2组患者术后6、12、24、48 h的静息、活动时疼痛视觉模拟量表(VAS)评分;比较2组患者术后第1、3天的舒适状况量表(GCQ)评分;比较2组患者术后48 h镇痛不足的补救次数;比较术后48 h,2组患者及医护人员满意度;比较2组患者术后48 h内不良事件发生情况。结果静息状态下,2组患者术后6、24、48 h的VAS评分比较,差异无统计学意义(P>0.05)。无线镇痛组患者术后12 h的VAS评分低于普通镇痛组,差异有统计学意义(P0.05)。无线镇痛组患者术后6、12 h的VAS评分均低于普通镇痛组,差异均有统计学意义(P0.05)。无线镇痛组患者总满意度高于普通镇痛组,差异有统计学意义(P0.05)。结论无线远程监控镇痛泵系统在老年患者全膝关节置换术后PCIA中的应用较传统镇痛泵具有优势,对提高老年患者镇痛效果、舒适度以及医患双方的满意度有良好的效果,且安全性高,有一定临床应用价值。

关键词：无线远程监控镇痛泵系统镇痛管理老年患者全膝关节置换术静脉自控镇痛

系统性红斑狼疮患者不同性别临床特征的对比研究

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中国现代医生 2020年第13期58卷 100-104页

作者：牛小娟吴海娟李艳魏红红李同敏罗晓红中国人民解放军联勤保障部队第九四〇医院风湿免疫科甘肃兰州730050 甘肃省中医院风湿骨病科甘肃兰州730050

目的对比确诊为系统性红斑狼疮(Systemic lupus erythematosus,SLE)的患者中不同性别的临床特征及其治疗效果、预后的差异。方法选取中国人民解放军联勤保障部队第九四〇医院风湿免疫科从2005年1月~2014年1月住院期间所有的SLE患者进行... 详细信息

目的对比确诊为系统性红斑狼疮(Systemic lupus erythematosus,SLE)的患者中不同性别的临床特征及其治疗效果、预后的差异。方法选取中国人民解放军联勤保障部队第九四〇医院风湿免疫科从2005年1月~2014年1月住院期间所有的SLE患者进行回顾性研究。观察患者的发病年龄、发病特点,分析系统性红斑狼疮患者不同性别的临床表现、对各脏器功能的损害程度、实验室差异、经药物治疗后的效果及生存率的差异。结果回顾性分析发现,男性SLE狼疮患者生存率低于女性患者(P<0.05),激素及免疫抑制剂的使用明显高于女性(P<0.05)。男性SLE患者脱发及盘状红斑的发生率较女性患者低(P<0.05)。但女性患者白细胞减少及自身抗体阳性率更为突出(P<0.001)。在疾病终末期需要透析的狼疮肾炎患者中,男性患者的风险明显高于女性患者(OR,3.98;95%置信区间,1.07~14.97)。男性与女性的SLICC/ACR DI(分别为1.55±0.26和1.03±0.42,P=0.028)。结论通过回顾性分析,本研究进一步证实,在系统性红斑狼疮患者中,男性狼疮性肾病的发生率比女性患者更高、损害程度比女性患者更为严重,男性一旦确诊SLE,总体预后及生存率较女性差。

关键词：系统性红斑狼疮肾炎性别预后

An insight to calculate soil conservation service

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Geography and Sustainability 2022年第3期3卷 237-245页

作者： Shaojuan Lu Xingwu Duan Shengzhao wei honghong Lin Institute of International Rivers and Eco-security Yunnan UniversityKunming 650091

Quantifying soil conservation service is critical for sustainable land management. However, the traditional algo-rithm includes a gap between barren land and real soil erosion (BSERef), and its paradox is that a mass of barrenland rarely exists in ecologically adaptable areas with fertile soils, which might overestimate soil conservationservice. This study suggests a practical algorithm to effectively evaluate soil conservation service of differentecosystems. We propose a new algorithm based on the difference between cropland without control practicesand real soil erosion (CSERef), which is compared with the BSERef algorithm. Our results show that: (1) a nearlyfive times smaller mean soil conservation amount of cropland occurred in the CSERef algorithm (3.76×106 t·yr–1)than in the BSERef algorithm (20.04×106 t·yr–1);(2) land use has higher explanatory power for the spatial dif-ferentiation of soil conservation rate in the CSERef algorithm (15.93% – 46.34%) than in the BSERef algorithm(5.95% – 44.49%). Our results demonstrate that the BSERef algorithm overestimates the soil conservation serviceof cropland in ecologically adaptable areas, whereas the CSERef algorithm can effectively assess the influence ofland use change induced by anthropogenic activities on soil conservation service. Furthermore, we develop anassessment framework in terms of land use classification system following the Chinese Academy of Sciences. Theframework considers that for water bodies, there is no soil conservation service;for non-ecologically adaptable ar-eas (unused land) with vast barren lands and vegetation cover below 5%, the BSERef algorithm is recommended;the CSERef algorithm is suggested to use in ecologically adaptable areas (including woodland, grassland, crop-land and construction land). This assessment framework can provide scientific assistance for decision-makers toformulate strategies for sustainable land management.

关键词： Soil conservation service Soil erosion Cropland Barren land Algorithm

A new class of potent liver injury protective compounds: Structural elucidation, total synthesis and bioactivity study

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Acta Pharmaceutica Sinica B 2023年第8期13卷 3414-3424页

作者： Kailong Ji wei Liu weihang Yin Xiangrong Kong honghong Xu Zeng-wei Lai Jing-Ya Li Jian-Min Yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China School of Chinese Materia Medica Nanjing University of Chinese MedicineNanjing 210023China

A new class of potent liver injury protective compounds,phychetins A-D(1-4)featuring an unique 6/6/5/6/5 pentacyclic framework,were isolated and structurally characterized from a Chinese medicinal plant Phyllanthus *** 2-4 are three pairs of enantiomers that were initially obtained in a racemic manner,and were further separated by chiral HPLC *** 1-4 were proposed to be originated biosynthetically from a coexisting lignan via an intramolecular Friedel-Crafts reaction as the key step.A bioinspired total synthesis strategy was thus designated,and allowed the effective syntheses of compounds 2-4 in high *** of compounds exhibited significant anti-inflammatory activities in vitro via suppressing the production of pro-inflammatory cytokine IL-1β.Notably,compound 4,the most active enantiomeric pair in vitro,displayed prominent potent protecting activity against liver injury at a low dose of 3 mg/kg in mice,which could serve as a promising lead for the development of acute liver injury therapeutic agent.

关键词： Phychetins Phyllanthusfranchetianus Structural elucidation Total synthesis Liver injury protection Anti-inflammation

Finite time Control Scheme for Aeroelastic Systems 36

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Finite time Control Scheme for Aeroelastic Systems