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投加气化渣对DMBR处理造纸废水污泥性能及膜污染的影响

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阜阳师范学院学报（自然科学版） 2018年第2期35卷 15-20页

作者：凌琪李尚尚伍昌年王晏平安徽建筑大学水污染控制与废水资源化安徽省重点实验室安徽合肥230601 安徽建筑大学环境与能源工程学院安徽合肥230601

通过两组对比实验,考察了投加气化渣对动态膜生物反应器(DMBR)处理造纸废水污泥性能及膜污染的影响。结果表明,投加气化渣显著提高污染物的去除率,将反应器对COD、色度、NH3-N的平均去除率分别提高到了96.74%、94.30%、90.86%;混合液EP... 详细信息

通过两组对比实验,考察了投加气化渣对动态膜生物反应器(DMBR)处理造纸废水污泥性能及膜污染的影响。结果表明,投加气化渣显著提高污染物的去除率,将反应器对COD、色度、NH3-N的平均去除率分别提高到了96.74%、94.30%、90.86%;混合液EPS含量与粘度、粒径呈正相关,相关系数分别为0.974 9和0.911 5,这说明EPS含量与粘度和颗粒具有较强的相关性。气化渣的投加降低了Zeta电位值增加的趋势,有利于减缓膜污染。

关键词：气化渣造纸废水膜污染动态生物膜反应器

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响应面法优化紫马铃薯皮花青素的提取工艺

食品研究与开发 2017年第2期38卷 37-41页

作者：王心怡方璐玲陈琪张丽文蒋玉蓉陆国权浙江农林大学农业与食品科学学院浙江临安311300

利用响应面分析方法研究紫色马铃薯皮花青素得率的最佳提取工艺。采用有机溶剂浸提法,选取提取温度、料液比、浸提时间进行单因素试验的基础上,进行三因素三水平的Central Composite中心组合研究,并运用Design Expect 8.0软件对试验数... 详细信息

利用响应面分析方法研究紫色马铃薯皮花青素得率的最佳提取工艺。采用有机溶剂浸提法,选取提取温度、料液比、浸提时间进行单因素试验的基础上,进行三因素三水平的Central Composite中心组合研究,并运用Design Expect 8.0软件对试验数据进行分析,通过响应面分析法对提取条件进行了优化。结果表明最佳工艺条件为:提取温度60℃、提取时间102 min、料液比1∶34(g/m L)。在此条件下,紫色马铃薯皮花青素得率可达1.13 mg/g。同时研究发现紫色马铃薯皮的花青素含量存在明显的品种间差异,其中品种"黑金刚"的花青素得率最高,达到1.53 mg/g。

关键词：紫马铃薯皮花青素响应面分析工艺优化品种差异

Phenols/Al(C_(6)F_(5))_(3) Initiation Systems for Cationic Polymerizations of Isobutylene

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Chinese Journal of Polymer Science 2023年第5期41卷 713-719,I0008页

作者： ling Cai qi-Yuan Wang Xin-li liu Dong-Mei Cui State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Department of Polymer Science and Engineering University of Science and Technology of ChinaHefei 230026China

We report herein the cationic polymerization of isobutylene(IB)under mild conditions is realized with a new binary initiation system generated by simply mixing a Lewis super acid Al(C_(6)F_(5))_(3) and a substituted phenol(RPhOH).Polymers with medium and/or high molecular weights(M_(W)=4.9×10^(4)-27.7×10^(4) g·mol^(-1))can be obtained in toluene and temperatures from-20℃to 0℃.NMR spectrum analysis and DFT sim ulation reveals the in situ generated acidic coordinating complex Ak(C_(6)F_(5))_(3)·RPhOH is the initiating active species,which fu rther tran sformed into the ion-pair[Al(C_(6)F_(5))_(3)ORPh]^(-)[PIB]^(+)of the active intermediates upon growing IB monomers where the counter anion[Al(C_(6)F_(5))_(3)R^(O)Ph]-coordinates to the macrocation via the phenoxy *** catalyst performances are the concert effects of the steric bulkiness and electronics of the counter anion on the coordinating strength to the macrocation,which is significant to the stability of the active species.

关键词： Cationic polymerization Phenols Lewis super acid Polyisobutylene

THE DERIVATIVE ULTRACONVERGENCE FOR QUADRATIC TRIANGULAR FINITE ELEMENTS

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Journal of Computational Mathematics 2004年第6期22卷 857-864页

作者： qi-dingZhu ling-xiongMeng CollegeofMathematicsandComputerScience HunanNormalUniversityChangsha410081China

This work concerns the ultraconvergence of quadratic finite element approximations of elliptic boundary value problems. A new, discrete least-squares patch recovery technique is proposed to post-process the solution derivatives. Such recovered derivatives are shown to possess ultraconvergence. The keys in the proof are the asymptotic expansion of the bilinear form for the interpolation error and a “localized” symmetry argument. Numerical results are presented to confirm the analysis.

关键词： Superconvergence patch recovery (SPR) Ultra-closeness Ultraconvergence

Developer Role Evolution in Open Source Software Ecosystem： An Explanatory Study on GNOME

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Journal of Computer Science & Technology 2017年第2期32卷 396-414页

作者： Can Cheng Bing li Zeng-Yang li Yu-qi Zhao Feng-ling liao International School of Software Wuhan University Wuhan 430072 China State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 China Complex Networks Research Center Wuhan University Wuhan 430072 China

An open source software （OSS） ecosystem refers to an OSS development community composed of many software projects and developers contributing to these projects. The projects and developers co-evolve in an ecosystem. To keep healthy evolution of such OSS ecosystems, there is a need of attracting and retaining developers, particularly project leaders and core developers who have major impact on the project and the whole team. Therefore, it is important to figure out the factors that influence developers＇ chance to evolve into project leaders and core developers. To identify such factors, we conducted a case study on the GNOME ecosystem. First, we collected indicators reflecting developers＇ subjective willingness to contribute to the project and the project environment that they stay in. Second, we calculated such indicators based on the GNOME dataset. Then, we fitted logistic regression models by taking as independent variables the resulting indicators after eliminating the most collinear ones, and taking as a dependent variable the future developer role （the core developer or project leader）. The results showed that part of such indicators （e.g., the total number of projects that a developer joined） of subjective willingness and project environment significantly influenced the developers＇ chance to evolve into core developers and project leaders. With different validation methods, our obtained model performs well on predicting developmental core developers, resulting in stable prediction performance （0.770, F-value）.

关键词： developer role evolution open source software ecosystem project environment subjective willingness

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用微型高压釜对大同原煤加氢液化试验

太原工学院学报 1981年第4期 31-37页

作者：马福林凌大琦李永光黃少兰

用山西省大同市同家梁原煤为煤液化原料,本试验是在自己设计的23ml微型高压釜中进行。煤液化条件为:①用葸油为溶剂,②不用催化剂,③反应温度390—450[℃],④氢气初始压力40—100[公斤/厘米~2],反应时间10—120[分]。最高煤的液化率是... 详细信息

用山西省大同市同家梁原煤为煤液化原料,本试验是在自己设计的23ml微型高压釜中进行。煤液化条件为:①用葸油为溶剂,②不用催化剂,③反应温度390—450[℃],④氢气初始压力40—100[公斤/厘米~2],反应时间10—120[分]。最高煤的液化率是比较低的,约为60％(无水无灰基)。

关键词：加氢液化转化率溶剂比反应温度高压釜高压容器原煤煤炭大同山西

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石油开采三次采油技术应用现状及发展展望

广州化工 2017年第7期45卷 1-2,13页

作者：程亚敏李艾玲马玉琪李妍琪赵梦云李小红张治军河南大学纳米材料工程研究中心河南开封475004 河南大学化学化工学院河南开封475004 中国石油化工股份有限公司石油勘探开发研究院北京100083

国内多数油藏接近水驱废弃期,平均采收率仅为28.9%,仍有大量原油在地下难以采出。随着科学技术的发展,在提高采收率技术的研究上已经取得诸多突破,为石油开采开创了广阔前景。本文详细介绍了热力采油驱、气体混相驱、化学驱、微生物驱... 详细信息

国内多数油藏接近水驱废弃期,平均采收率仅为28.9%,仍有大量原油在地下难以采出。随着科学技术的发展,在提高采收率技术的研究上已经取得诸多突破,为石油开采开创了广阔前景。本文详细介绍了热力采油驱、气体混相驱、化学驱、微生物驱、纳米材料驱等三次采油技术的作用机理和应用现状,并指出采油技术的创新仍是石油开采领域的关键,高效、环保新材料及低品位油气藏开发新技术的研究将会是今后石油开采领域研究的重点。

关键词：提高采收率作用机理研究现状发展展望

Biotic Homogenization Caused by the Invasion of Solidago canadensis in China

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Journal of Integrative Agriculture 2013年第5期12卷 835-845页

作者： CHEN Guo-qi ZHANG Chao-bin MA ling qiANG Sheng John ASilander li li qi Weed Research Laboratory Nanjing Agricultural University Department of Ecology and Evolutionary Biology University of Connecticut Northern Crop Science Laboratory USDA-ARS

Although studies argue that invasive species can cause biotic differentiation, some cases show that biological invasions actually decrease biodiversity through biotic homogenization. The concept of biotic homogenization through the invasion of a certain serious invasive plant species merit more studies. Hence, we used field surveys to quantitatively compare invasive populations of Solidago canadensis （SC） in China with the control sites （adjacent sites to SC present sites yet without the species） and SC native populations in the USA. We found that plant communities in SC invaded habitats shared similarities with those in SC native ranges. Bray-Curtis similarity clearly showed that the composition of plant communities in SC invaded habitats were similar to those in SC native ranges. Both in the native and introduced range, plant communities with SC present were characterized by SC being dominant, significantly lower species richness, or-diversity and p-diversity, as well as a decrease in the correlation coefficient between geographic distance and floristic similarities. SC favors fertile and moist loam habitat, while it dominated in various habitats in China, where more than 20 different dominants should have occurred. In conclusion, serious invasive species can quickly remodel and homogenize diverse communities by dominating them.

关键词： biodiversity control site field survey geographic distance invasive population native population similarity

NaV3O8/poly(3,4-ethylenedioxythiophene) composites as high-rate and long-lifespan cathode materials for reversible sodium storage

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Rare Metals 2020年第8期39卷 865-873页

作者： Guo-Chun Ding li-Min Zhu qi Yang ling-ling Xie Xiao-Yu Cao Yu-ling Wang Jian-Ping liu Xin-li Yang School of Chemistry and Chemical Engineering Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou CityHenan University of TechnologyZhengzhou 450001China School of Environmental Engineering Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou CityHenan University of TechnologyZhengzhou 450001China Department of Molecular Sciences Australian Research Council Centre of Excellence for Nanoscale BioPhotonicsFaculty of Science and EngineeringMacquarie UniversitySydneyNSW 2109Australia

Sodium-ion batteries have received a surge of interests for the alternatives to lithium-ion batteries due to their abundant reserves and low *** quest of reliable and high-performance cathode materials is crucial to future Na storage ***,poly(3,4-ethylenedioxythiophene)(PEDOT)was successfully introduced to NaV3O8 via in situ oxidation polymerization,which can effectively enhance electron conductivity and ionic diffusion of NaV3O8 *** a result,these NaV3O8@-PEDOT composites exhibit a significantly improved electrochemical performance including cycle stability and rate *** particular,NaV3O8@20 wt%PEDOT composite demonstrates better dispersibility and lower charge transfer resistance compared with bare NaV3O8,which delivers the first discharge capacity of 142 mAh-g-1and holds about 128.7 mAh·g-1 after 300 cycles at a current density of 120 mA·*** at a high current density of 300 mA·g-1,a high reversible capacity of 99.6 mAh·g-1 is *** these consequences suggest that NaV3O8@20 wt%PEDOT composite may be a promising candidate to serve as a high-rate and long-lifespan cathode material for sodium-ion batteries.

关键词： Sodium-ion batteries NaV3O8@PEDOT cathode composites In situ oxidation polymerization High-rate Long-lifespan