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Hybrid brominated sulfonated poly(2,6-diphenyl-1,4-phenylene oxide) and SiO2 nanocomposite membranes for CO2/N2 separation

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Progress in Natural Science:Materials International 2012年第6期22卷 661-667页

作者： Bing Yu Hailin Cong Xiusong zhao College of Chemical and Environmental Engineering Qingdao University Laboratory for New Fiber Materials and Modern Textile Growing Base for State Key Laboratory The University of Queensland School of Chemical EngineeringBrisbaneQLD 4072Australia

Brominated sulfonated poly(2,6-diphenyl-1,4-phenylene oxide)(BSPPOdp) was synthesized as a new membrane material for CO2/*** 90%brominated-10%sulfonated PPOdp(BSPPOdp9010) was selected as representative material for membrane *** formed flexible membranes with higher CO2permeability(PCO2= 58 Barrer) and selectivity (αCO2/N2=36) than poly(2,6-dimethyl-1,4-phenylene oxide)(PPOdm) ***9010 membranes containing silica nanoparticles enhanced CO2permeability while maintaining the CO2/ N2selectivity as compared with the pure BSPPOdp9010 *** CO2permeability increased as a function of the silica content in the *** separation mechanism for CO2/N2in the membranes was attributed to the gas solubility effect rather than the gas diffusivity.

关键词： Poly(2,6-diphenyl-1,4-phenylene oxide) Silica Nanocomposites Gas separation

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高肥力土壤下马铃薯磷肥利用及投入阈值研究

农业环境科学学报 2024年第8期43卷 1838-1845页

作者：张孟鸽李永梅范茂攀赵吉霞鲁泽让王婷云南农业大学资源与环境学院昆明650201

为探究农田磷肥投入阈值,保证马铃薯产量的同时减少磷养分进入流域水体的风险,通过田间试验研究了5种施磷处理(以P_(2)O_(5)计):0、90、135、180、225 kg·hm^(-2)对马铃薯产量、土壤有效磷累积、土壤磷平衡及磷肥利用率的影响。结果表... 详细信息

为探究农田磷肥投入阈值,保证马铃薯产量的同时减少磷养分进入流域水体的风险,通过田间试验研究了5种施磷处理(以P_(2)O_(5)计):0、90、135、180、225 kg·hm^(-2)对马铃薯产量、土壤有效磷累积、土壤磷平衡及磷肥利用率的影响。结果表明,施磷能显著提高马铃薯产量,增产幅度为35.3%~44.7%。马铃薯产量随施磷量的增加呈先增后减趋势,其中以施磷180 kg·hm^(-2)处理的马铃薯产量最高,为33020 kg·hm^(-2)。磷肥偏生产力和磷肥农学利用率均随施磷量的增加呈下降趋势,而磷肥表观利用率差异不显著。0~60 cm土层有效磷含量和累积量均随施磷量的增加呈增加趋势;各处理0~40 cm土层有效磷累积量占0~60 cm土层有效磷累积总量的78.6%~88.1%。将磷素盈余与施磷量、马铃薯产量、土壤有效磷含量和累积量、磷肥利用效率分别进行拟合,当磷素盈余为0时,施磷量为137.5 kg·hm^(-2),马铃薯产量为32756 kg·hm^(-2),0~20、20~40 cm和40~60 cm土层有效磷含量分别为70.5、49.4 mg·kg^(-1)和19.7 mg·kg^(-1),有效磷累积量分别为150.8、161.9 kg·hm^(-2)和64.8 kg·hm^(-2),磷肥偏生产力为242.1 kg·kg^(-1),磷肥农学利用率为72.7 kg·kg^(-1)。研究表明,在洱海流域高肥力水平农用地区域,施磷量131~144 kg·hm^(-2)可作为马铃薯高产且环境友好的磷肥投入阈值。

关键词：施磷量马铃薯产量土壤磷盈余磷阈值

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Density Functional Theory Study on （Cl2GaN3）n （n=1 4） Clusters

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Chinese Journal of Chemistry 2011年第9期29卷 1817-1823页

作者： Xia, Qiying Ma, Dengxue zhao, Wenwei Xiao, Heming School of Chemistry and Resources Environment Linyi University Linyi Shandong 276005 China School of Engineering Nanjing University of Science and Technology Nanjing Jiangsu 210094 China

The molecular geometries, vibrational properties, and thermodynamic properties of the clusters （Cl2GaN3）n （n= 1--4） have been predicted at the B3LYP/6-311 ＋G＊ level. The optimized clusters （Cl2GaN3）n （n=2--4） all possess cyclic structures containing Ga--N,--Ga linkages. The relationships between geometrical parameters and oli- gomerization degree n are discussed. The gas-phase structures of the trimers prefer to exist in boat-twisting confor- mation. As for the tetramer, the $4 symmetry structure is the most stable. The infrared spectra are obtained and as- signed by vibrational analysis. Thermodynamic properties derived from the infrared spectra on the basis of statistical thermodynamic principles are linearly correlated with the oligomerization degree n as well as the temperature. Meanwhile, thermodynamic analysis of the gas-phase reaction suggests that the oligomerization is exothermic and favorable under high temperature.

关键词： (Cl2GaN3). (n =1--4) clusters azide density functional theory (DFT) structural feature IR spectra,thermodynamics

登山锻炼对大学生体质、心理素质和心理健康水平的影响

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中国组织工程研究与临床康复 2007年第30期11卷 6006-6009页

作者：刘柏青邱远河源职业技术学院体育教研室广东省河源市517300

目的:观察登山锻炼对大学生体质、心理素质和心理健康水平的影响,分析其健康效应,带动高校对登山锻炼活动的关注。方法:实验于2003-09/2004-07随机数字表法抽取河源职业技术学院2003级的313名学生作为受试对象,男65名,女248名。①选用... 详细信息

目的:观察登山锻炼对大学生体质、心理素质和心理健康水平的影响,分析其健康效应,带动高校对登山锻炼活动的关注。方法:实验于2003-09/2004-07随机数字表法抽取河源职业技术学院2003级的313名学生作为受试对象,男65名,女248名。①选用当地全民健身登山路线,山高海拔683m。5条登山路线,各线路长约2.5km,石阶级不少于2000级。每次登山前均先陈述目标、要求,后开展10min的准备活动。为强化登山的心理效应,要求学生登顶后尽情叫喊,与大自然对话。每周组织学生登山锻炼3次,每周要求学生就登山的感受进行记录、整理。②体质测试项目包括身高、体质量、肺活量、脉搏、耐力跑等。③心理素质测试采用自行编制的心理素质测量表,包括自尊自信、兴趣态度、意志品质和情绪调控4个因子,按5级评分,分数越高情况越佳。④心理健康水平测试选用症状自评量表进行问卷调查,分为躯体化、强迫症状、人际关系敏感、抑郁、焦虑、敌对、恐怖、偏执、精神病性共9个因子,按5级评分,分数越高症状越严重。结果:313名学生均完成1年的登山实验教学,且问卷资料填写完整,全部进入结果分析。①登山锻炼前后大学生体质的变化:登山锻炼1年后,男、女大学生的脉搏、肺活量、耐力跑、体质量指数均有明显变化,与实验前比较差异有非常显著性意义(t=-7.28～3.82,P均<0.01;t=-10.60～9.92,P均<0.01)。②登山锻炼前后大学生心理素质的变化:登山锻炼1年后,大学生自尊自信、兴趣态度、意志品质和情绪调控指标均有明显改善,与实验前比较差异有非常显著性意义(t=-4.37～-2.84,P均<0.01)。③登山锻炼前后大学生心理素质的变化:登山锻炼1年后,反映大学生心理健康水平的症状自评量表各因子均有不同程度的积极变化,除强迫症状、偏执与实验前比较无明显差异外,躯体化、敌对、恐怖、精神病性、人际关系敏感、抑郁、焦虑与实验前比较差异均具有显著性意义(t=2.06～4.92,P<0.05或0.01)。结论:登山锻炼对增强大学生的体质、心理素质和心理健康均有显著的积极作用,同时对人的思想、精神和身体有充分的浆洗、唤醒和生发作用,其健康效应主要源自“快乐磨练”和“心灵回归”法则。

关键词：体育运动/生理学精神卫生学生体质

砂化白云岩隧洞围岩分类方法SHF构建及应用

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地球科学 2024年第8期49卷 2813-2825页

作者：董家兴龚欣月米健范开元杨润学赵永川沐红元周伦顺昆明理工大学电力工程学院云南昆明650500 云南省水利水电勘测设计研究院云南昆明650021 云南省滇中引水工程有限公司云南昆明650000

砂化白云岩在我国西南地区分布广泛,在该地层中修建隧洞,常出现掌子面塌方、突水涌砂等地质灾害,因此在滇中引水工程建设中面临的砂化白云岩问题备受关注.砂化等级和地下水条件是控制砂化白云岩隧洞围岩破坏模式与稳定性的关键因素,然而... 详细信息

砂化白云岩在我国西南地区分布广泛,在该地层中修建隧洞,常出现掌子面塌方、突水涌砂等地质灾害,因此在滇中引水工程建设中面临的砂化白云岩问题备受关注.砂化等级和地下水条件是控制砂化白云岩隧洞围岩破坏模式与稳定性的关键因素,然而,在传统围岩分类方法中往往没有全面考虑到这些因素,例如在Q系统中未考虑岩石强度、RMR法未考虑地应力、bq法对砂化白云岩的结构面状态、粗糙度等,同时,传统方法均未直接考虑砂化等级对于砂化白云岩工程特性的影响.为实现更为快速、客观地进行砂化白云岩隧洞围岩分类,需构建一种适合于砂化白云岩隧洞的围岩分类方法.为解决以上缺陷,以在建的滇中引水工程为依托,首先分析了Q法、RMR法、RMi法、GSI法、bq法等传统方法在砂化白云岩隧洞中的适用性.其次,结合砂化白云岩工程地质特性及赋存地质环境,构建了以砂化等级、结构面状态、地下水、主要结构面状态、地应力为评价指标的围岩分类体系SHF,并选取依托工程典型洞段对SHF分类方法进行了验证和应用.建立的砂化白云岩隧洞围岩分类方法SHF易于操作,应用该方法所得的围岩分类结果更符合工程实际,研究可为砂化白云岩隧洞支护设计和施工提供理论依据.

关键词：砂化白云岩 SHF围岩分类方法砂化等级地下水滇中引水工程

基于石墨烯复合材料的电化学传感器检测丽春红2R

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分析试验室 2024年第8期43卷 1153-1158页

作者：张国娟刘晓霞吴锁柱樊玮鑫张建刚赵晋忠山西农业大学基础部晋中030801 山西农业大学食品科学与工程学院晋中030801 山西农业大学实验教学中心晋中030801

本研究采用一步合成法制备石墨烯血红素铂纳米颗粒复合材料(PtNPs/H-GNs),该复合材料兼具石墨烯大的比表面积、导电性、催化性,血红素优异的电化学氧化还原性以及PtNPs的高效催化性。基于此构建了丽春红2R分析检测传感平台。最优条件下... 详细信息

本研究采用一步合成法制备石墨烯血红素铂纳米颗粒复合材料(PtNPs/H-GNs),该复合材料兼具石墨烯大的比表面积、导电性、催化性,血红素优异的电化学氧化还原性以及PtNPs的高效催化性。基于此构建了丽春红2R分析检测传感平台。最优条件下,丽春红2R在0.1000~312.5μg/mL浓度(c)范围内,血红素的峰电流(i)线性降低,线性方程为i=-6.193logc+32.04(R^(2)=0.9950),检出限(LOD)低至0.030μg/mL。该传感器可用于食品中丽春红2R的快速检测。

关键词：电化学传感石墨烯血红素丽春红2R

Long Non-coding RNAs Genes Polymorphisms and Their Expression Levels in Patients With Rheumatoid Arthritis

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Long Non-coding RNAs Genes Polymorphisms and Their Expressio...

Effects of trifluoromethanesulfonic acid ligand on the Zinc-based catalysts for the acetylene hydration

安徽省2019年度流行病与卫生统计学学术年会

作者：张天平 Zhu bq Tao SS Fan YG Li XM Pan HF Ye DQ 安徽医科大学公共卫生学院

Long non-coding RNAs(lncRNAs) are increasingly recognized to play important roles in multiple autoimmune *** study aimed to evaluate the association of four lncRNAs(ANRIL,lnc-DC,MALAT1,ZFAS1) genes single nucleotide polymorphisms(SNPs) with susceptibility to rheumatoid arthritis(RA) patients,as well as their expression *** SNPs of the four lncRNAs were genotyped in a cohort of 660 RA patients and 710 controls using improved multiple ligase detection reaction(iMLDR).The lncRNAs expressions in peripheral blood mononuclear cells(PBMCs) from 120 RA patients and 120 controls were detected by *** significant differences were found for the allele and genotype frequencies distribution of ANRIL SNPs(rs1412830,rs944796,rs61271866,rs2518723,rs3217992),lnc-DC SNPs(rs7217280,rs10515177),MALAT1 SNPs(rs619586,rs4102217,rs591291,rs11227209,rs35138901),ZFAS1 SNPs(rs237742,rs73116127,rs6125607,rs6125608) between RA patients and normal controls(all P > 0.05).The genotype effects of dominant and recessive models were also evaluated,but no significant association was *** addition,our results demonstrated that the rs944796 G allele,rs2518723 T allele,rs3217992 T allele frequencies were significantly associated with anti-CCP in RA patients(all P < 0.05).The haplotype CGTA frequency for ZFAS1 was significantly higher in RA patients(P = 0.036).Compared with normal controls,the expression levels of ANRIL,lnc-DC,MALAT1,ZFAS1 in PBMCs were significantly reduced in RA patients(all P <0.001).Moreover,ZFAS1 expression was negatively associated with CRP in RA patients(P =0.002).In summary,ANRIL,lnc-DC,MALAT1,and ZFAS1 genes SNPs were not associated with RA susceptibility,while altered ANRIL,lnc-DC,MALAT1,ZFAS1 levels in RA patients suggested that these lncRNAs might play a role in RA.

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Chinese Chemical Letters 2023年第6期34卷 256-261页

作者： Zhen Chen Fei zhao Houyu Zhang Qinqin Wang Bin Dai School of Chemistry and Chemical Engineering Shihezi University/State Key Laboratory Incubation Base for Green Processing of Chemical EngineeringShihezi 832000China State Key Laboratory of Supramolecular Structure and Materials Institute of Theoretical ChemistryCollege of ChemistryJilin UniversityChangchun 130012China School of Chemistry and Chemical Engineering Taishan UniversityTai’an 271000China

Developing an efficient Zn-based catalyst modified with Trifluoromethanesulfonic acid(Tf OH)ligand is extremely desirable for the acetylene hydration *** this paper,with the use of a simple impregnation method,a series of Zn-Tf OH/AC catalysts were synthesized,and the Zn-1.5Tf OH/AC catalyst demonstrated the optimal catalytic performance with 96%acetylene conversion in the hydration of *** X-ray absorption fine structure(XAFS)spectra of the fresh Zn-1.5Tf OH/AC catalysts demonstrated the establishment of the Zn-O_(4)coordination *** to the characterization results,Tf OH ligands effectively inhibited carbon accumulation and Zinc loss,improved acidic sites and the dispersion of active metal,and produced more catalytic active ***,the hydration reaction mechanism of Zn-Tf OH/AC catalyst with Zn(OTf)_(2),Tf O-Zn Cl,and Tf O-Zn OH complex configurations was explored by the Density Functional Theory(DFT)method,which showed that the activation barrier increased sequentially TfO-ZnOH

关键词： Acetylene hydration Acetaldehyde Zn-ligand catalysts XAFS DFT computation

Controllable synthesis and photocatalytic activities of rod-shaped mesoporous titanosilicate composites with varied aspect ratios

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Chinese Chemical Letters 2014年第6期25卷 962-966页

作者： Feng-Jiao Chen Chang-Wang Shao Min-Nan zhao zhao-Sheng Bu Yan Zhang Xiao-Nan Dai Guo-Wei Zhou Key Laboratory of Fine Chemicals in Universities of Shandong School of Chemistry and Pharmaceutical EngineeringQilu University of Technology School of Chemical Engineering and Environment Weifang University of Science and Technology

Rod-shaped mesoporous titanosilicate composites （RMTSs） with controllable aspect ratios （ARs） were fabricated using cetyltrimethylammonium bromide （CTAB） and ammonium hydroxide （NH4OH） at a continuous stirring rate, resulting in ARs ranging from 1 to 5. Slowing the stirring rate or increasing the concentration of CTAB mainly impacted the length growth, whereas NH4OH affected the width growth. Photocatalytic activity studies revealed that the length of RMTSs played a more significant role than the width at lower ARs in their photocatalytic activity.

关键词： Titanosilicate Aspect ratio Growth direction Photocatalytic activity