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Alcohol solvent effect on the self-assembly behaviors of lignin oligomers

Green Energy & Environment 2024年第4期9卷 597-603页

作者： ya.ma.zhicheng jiang yafei Luo Xingjie Guo Xudong Liu Yiping Luo Bi Shi College of Biomass Science and Engineering Sichuan UniversityChengdu610065China National Engineering Research Center of Clean Technology in Leather Industry Sichuan UniversityChengdu610065China College of Pharmacy(International Academy of Targeted Therapeutics and Innovation) Chongqing University of Arts and SciencesChongqing402160China State Key Laboratory of Utilization of Woody Oil Resource Hunan Academy of ForestryChangsha410004China CAS Key Laboratory of Environmental and Applied Microbiology Environmental Microbiology Key Laboratory of Sichuan ProvinceChengdu Institute of BiologyChinese Academy of SciencesChengdu610041China

The interactions between lignin oligomers and solvents determine the behaviors of lignin oligomers self-assembling into uniform lignin nanoparticles(LNPs).Herein,several alcohol solvents,which readily interact with the lignin oligomers,were adopted to study their effects during solvent shifting process for LNPs’*** lignin oligomers with widely distributed molecular weight and abundant guaiacyl units were extracted from wood waste(mainly consists of pine wood),exerting outstanding self-assembly *** and spherical LNPs were generated in H_(2)O-n-propanol cosolvent,whereas irregular LNPs were obtained in H_(2)O-methanol *** unsatisfactory self-assembly performance of the lignin oligomers in H_(2)O-methanol cosolvent could be attributed to two *** one hand,for the initial dissolution state,the distinguishing Hansen solubility parameter and polarity between methanol solvent and lignin oligomers resulted in the poor dispersion of the lignin *** the other hand,strong hydrogen bonds between methanol solvent and lignin oligomers during solvent shifting process,hindered the interactions among the lignin oligomers for self-assembly.

关键词： Lignin oligomers Alcohol solvent Self-assembly LNPs Solvent effects

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Lone-Star retractor perineal exposure method for laparoscopic abdominal perineal resection of rectal cancer

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2528-2537页

作者： Jun ma Dai-Bin Tang Yu-Quan Tang Da-Tian Wang Peng jiang ya-Ming Zhang Department of General Surgery Anqing Municipal HospitalAnqing 246000Anhui ProvinceChina Department of Anesthesiology Anqing Municipal HospitalAnqing 246000Anhui ProvinceChina

BACKGROUND The abdominal perineal resection(APR),historically referred to as Mile’s proce-dure,stands as a time-honored surgical intervention for rectal cancer *** in surgical techniques and the advent of neoadjuvant therapies have significantly improved the rate of sphincter preservation among patients afflicted with rectal cancer,including those with ultralow rectal *** these improvements,APR maintains its irreplaceable role in the clinical landscape,particularly for cases involving low rectal cancer with encroachment on the external anal sphincter or levator ani *** perineal exposure stands as a pivotal phase in APR,given that the precision of this maneuver is directly correlated with both the safety of the surgery and the patient’s subse-quent long-term *** To evaluate the value of Lone-Star retractor(LSR)perineal exposure method in the treatment for laparoscopic APR of rectal *** We reviewed the records of 38 patients with rectal cancer at Anqing Municipal Hospital from January 2020 to December 2023,including 20 patients who underwent the APR procedure with a LSR perineal exposure method(LSR group)and 18 patients who underwent the APR procedure with a conventional perineal exposure method(control group).In the LSR group,following incision of the skin and subcutaneous tissue,the LSR was placed and dynamically adjusted according to the surgical plane to fully expose the perineal operative *** A total of 38 patients underwent laparoscopic APR,none of whom were found to have distant metastasis upon intraoperative *** blood loss,the postoperative hospital stays and the wound pain scores in the LSR group were significantly lower than those in the control group.A single surgeon completed the perineal operation significantly more often in the LSR group than in the control group(P<0.05).The incidence of infection via the perineal incision in the LSR group was significantly lower

关键词： Rectal cancer Lone-Star retractor Abdominal perineal resection Perineal exposure method Technique

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Experimental Study on Ammonia Co-Firing with Coal for Carbon Reduction in the Boiler of a 300-MW Coal-Fired Power Station

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Engineering 2024年第9期40卷 247-259页

作者： Qifu Lin Wangping Sun Haiyan Li yangjiong Liu Yuwei Chen Chengzhou Liu Yiman jiang Yu Cheng Ning ma Huaqing ya Longwei Chen Shidong Fang Hansheng Feng Guang-Nan Luo jiangang Li Kaixin Xiang Jie Cong Cheng Cheng Institute of Energy Hefei Comprehensive National Science Center(Anhui Energy Laboratory)Hefei 230088China Anbang Technology Co.Ltd Tongling 244000China Institute of Plasma Physics Hefei Institute of Matter ScienceChinese Academy of SciencesHefei 230031China

To reduce CO_(2) emissions from coal-fired power plants,the development of low-carbon or carbon-free fuel combustion technologies has become *** a new zero-carbon fuel,ammonia(NH_(3))can be used to address the storage and transportation issues of hydrogen *** it is not feasible to completely replace coal with ammonia in the short term,the development of ammonia-coal co-combustion technology at the current stage is a fast and feasible approach to reduce CO_(2) emissions from coal-fired power *** study focuses on modifying the boiler and installing two layers of eight pure-ammonia burners in a 300-MW coal-fired power plant to achieve ammonia-coal co-combustion at proportions ranging from 20%to 10%(by heat ratio)at loads of 180-to 300-MW,*** results show that,during ammonia-coal co-combustion in a 300-MW coal-fired power plant,there was a more significant change in NO_(x) emissions at the furnace outlet compared with that under pure-coal combustion as the boiler oxygen levels ***,ammonia burners located in the middle part of the main combustion zone exhibited a better high-temperature reduction performance than those located in the upper part of the main combustion *** all ammonia co-combustion conditions,the NH_(3) concentration at the furnace outlet remained below 1 parts per million(ppm).Compared with that under pure-coal conditions,the thermal efficiency of the boiler slightly decreased(by 0.12%-0.38%)under different loads when ammonia co-combustion reached 15 t·h^(-1).Ammonia co-combustion in coal-fired power plants is a potentially feasible technology route for carbon reduction.

关键词： Coal-fired boiler Coal mixing with ammonia Ammonia-coal co-firing Nitrogen oxide(NO_(x)) CO_(2)reduction Boiler thermal efficiency

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Synergistic effect of oxygen species and vacancy for enhanced electrochemical CO_(2)conversion to formate on indium oxide

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eScience 2024年第3期4卷 134-141页

作者： Tengfei ma Zihao Jiao Haoran Qiu Feng Wang ya Liu Liejin Guo International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049China

Indium-based oxides are promising electrocatalysts for producing formate via CO_(2)reduction reaction,in which*OCHO is considered the key ***,we identified that the*COOH pathway could be preferential to produce formate on In_(2)O_(3)of In/In_(2)O_(3)heterojunction due to the synergistic effect of oxygen species and ***,*CO_(2)and*COOH were observed on In_(2)O_(3)and related to formate production by in situ Raman *** theoretical calculations further demonstrated that the energy barrier of the*COOH formation on In_(2)O_(3)was decreased in the presence of oxygen vacancy,similar to or lower than that of the*OCHO formation on the In *** a result,a formate selectivity of over 90%was obtained on prepared In/In_(2)O_(3)heterojunction with 343±7macm^(-2)partial current ***,when using a Si-based photovoltaic as an energy supplier,10.11%solar-to-fuel energy efficiency was achieved.

关键词： Electrocatalytic CO_(2)reduction Formate In2O3 Oxygen species Oxygen vacancy

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Charge regulation by ferromagnetic metal/LiF spin-polarized interface for high-performance Li metal anodes

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Rare Metals 2024年第3期43卷 995-1005页

作者： Ming-yang Feng Shuang Zhou Yi-Fang Zhang ya-Ping Wang Chun-yan Fu Jian-Wen Li Yuan-Lang Wan Zhi-Jia Zhang Yong jiang An-Qiang Pan State Key Laboratory of Powder Metallurgy School of Materials Science and EngineeringCentral South UniversityChangsha410083China State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Advanced Fibers and Energy StorageSchool of Material Science and EngineeringTiangong UniversityTianjin300387China School of materials Science and Engineering Hebei University of TechnologyTianjin300130China

The interfacial characteristics of the Li metal anode(Lma)play a crucial role in its overall *** various materials being applied to modify the interface,a comprehensive understanding of their specific mechanisms remains to be ***,we have prepared carbon cloth(CC)frameworks with their surfaces modified using ferromagnetic metal/LiF heterogeneous films(T^(M)-LiF-CC)as the substrate for Lma,which exhibit superior electrochemical *** ferromagnetic Co as a representative example,our study demonstrates that the enhanced performance of Co-LiF-CC,compared to bare CC,is attributed to the spinpolarized interface contributed by the Co/LiF *** and LiF play individual roles in redistributing electrons and Li^(+)to promote homogeneous Li *** nanoparticles play a crucial role in generating strong surface capacitance by storing electrons in spin-split bands,while LiF,with low surface diffusion barriers,ensures fast transportation of Li^(+).The Co-LiF-CC@Li electrodes deliver long lives of 7400 and 3600 h at 1 and 2 ma·cm^(-2)in symmetric cells,respectively;moreover,they enable full batteries with high and durable capacities,particularly when the N/P ratios are low(3.3 or even 1.7).

关键词： Lithium metal anode Interfacial charge Ferromagnetic metal Lithium fluoride Spin polarization

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广告景别呈现方式会影响广告态度吗——基于整体优先原则的实证研究

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南开管理评论 2024年第1期27卷 158-167,I0029,I0030页

作者：王娅李江马晨雅蒋玉石北京理工大学管理与经济学院河南工程学院西南交通大学经济管理学院

随着数字经济时代的到来,企业间竞争愈发激烈,广告成为了企业争夺和占有市场的重要手段。如何有效地利用有限的广告位资源,成为了企业不容忽视的关键问题。本研究基于整体优先原则,从信息加工流畅性视角出发,探究了广告景别呈现方式对... 详细信息

随着数字经济时代的到来,企业间竞争愈发激烈,广告成为了企业争夺和占有市场的重要手段。如何有效地利用有限的广告位资源,成为了企业不容忽视的关键问题。本研究基于整体优先原则,从信息加工流畅性视角出发,探究了广告景别呈现方式对广告态度的影响。研究结果表明,相较于近景系列广告,全景系列广告会使消费者的广告态度更积极,信息加工流畅性在该影响过程中起中介作用。消费者思维模式调节了广告景别呈现方式对信息加工流畅性和广告态度的影响,当消费者处于整体(局部)加工思维模式下,相较于近景(全景)系列广告,全景(近景)系列广告使消费者信息加工更加流畅,广告态度更积极。本研究丰富了视觉线索在营销领域中的应用,研究结论对于企业制定和选择广告策略具有一定的实践意义。

关键词：广告态度广告景别呈现方式消费者思维模式信息加工流畅性整体优先原则

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知识图谱强化网络分析法的系统评价方法

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控制与决策 2024年第1期39卷 236-243页

作者：刘剑慰邢健豪姜斌冒泽慧马亚杰南京航空航天大学自动化学院南京211100

针对传统系统评价方法在评价指标体系构建和权重分配过程中过于依赖专家主观意见的缺点,利用网络分析法(ANP)结构与知识图谱结构的相似性,提出一种基于知识图谱的网络分析强化方法,充分使用先验知识,增强评价的完备性和客观性.首先,收... 详细信息

针对传统系统评价方法在评价指标体系构建和权重分配过程中过于依赖专家主观意见的缺点,利用网络分析法(ANP)结构与知识图谱结构的相似性,提出一种基于知识图谱的网络分析强化方法,充分使用先验知识,增强评价的完备性和客观性.首先,收集评价任务相关的文本数据建立知识图谱,作为网络分析法的网络层指标库;然后,依据评价任务确定网络分析法的控制层,包括评价目标和评价准则.根据控制层,在网络层指标库中搜索适配的指标构建网络层;接着,以指标与准则间的相似度为客观度标准,调整指标相对重要性,并通过网络分析法计算各指标的权重,依据各指标的得分完成系统评价;最后,应用案例的结果验证该方法具有有效性、先进性以及通用性.

关键词：系统评价知识图谱网络分析法评价指标指标权重相似度

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Calculation of the energy dependence of fission fragments yields and kinetic energy distributions for neutron-induced ^(235)U fission

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Chinese Physics C 2024年第8期48卷 159-169页

作者： ya-Ning Han Zheng Wei Yi-Xuan Wang Dong-Ying Huo Peng-Qi Zhang Ming Li Jun ma Kang Wu Yong-Guang Zheng Yuan He Zhi-Yong Deng Tian-Zhi jiang Xiang-Lin Zhuo Jin Li Yun Zhang Yu Zhang Jun-Run Wang Xiao-Dong Su Ze-En yao School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Engineering Research Center for Neutron Application Technology Ministry of EducationLanzhou UniversityLanzhou 730000China MOE Frontiers Science Center for Rare Isotopes Lanzhou UniversityLanzhou 730000China School of mathematics and Statistics Lanzhou UniversityLanzhou 730000China Nuclear Power Institute of China Chengdu 610000China

Fission fragments yields and average total kinetic energy are fundamental nuclear data for nuclear energy applications and the study of nuclear *** fission products,such as ^(95)Zr,^(99)Mo,^(140)Ba,^(144)Ce,and ^(147)Nd,serve as burnup monitors,assessing the number of fissions induced by neutrons on ^(235)***,current experimental data for these fission products worldwide are inconsistent,introducing significant uncertainty into related scientific *** this study,we employed the Potential-driving Model to calculate the independent yields of ^(235)U and evaluate its advantages in such ***,we investigated the energy dependence of independent yields to select important ***,we calculated the cumulative yields of ^(95)Zr,^(99)Mo,^(140)Ba,^(144)Ce,and ^(147)Nd,and compared them with existing literature data to explore the energy dependence of fission products for ^(235)*** the lack of fission product yield data above 14.8 MeV,we extended our calculated incident neutron energy to 20 MeV,aiming to support future scientific *** Geant4 physical model does not consider the influence of incident neutron energy on the average total kinetic energy of fission fragments;thus,we introduced the excitation function of the total kinetic energy of fission fragments recommended by madland et al.,which effectively describes the experimental data of the average total kinetic energy of fragments formed in ^(235)U *** this paper,we comprehensively discuss the energy dependence of fission product yields and average total kinetic energy.

关键词： ^(235)U(n f) potential-driving model fission yields kinetic energies energy dependence

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复合生物保鲜剂对鲜湿面保鲜效果及其品质变化的影响

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粮油食品科技 2024年第3期32卷 125-131页

作者：马赫李雅吴杰李江珊刘常金天津科技大学食品科学与工程学院天津300457

鲜湿面由于含水量较高,极易滋生微生物而腐败变质,迅速失去食用价值。以常见生物保鲜剂壳聚糖、乳酸链球菌素(Nisin)和茶多酚为材料,通过正交实验进行优化组合,研究复合生物保鲜剂对鲜湿面货架期及贮藏品质中品质变化的影响。结果表明:... 详细信息

鲜湿面由于含水量较高,极易滋生微生物而腐败变质,迅速失去食用价值。以常见生物保鲜剂壳聚糖、乳酸链球菌素(Nisin)和茶多酚为材料,通过正交实验进行优化组合,研究复合生物保鲜剂对鲜湿面货架期及贮藏品质中品质变化的影响。结果表明:添加0.25%壳聚糖、0.025%Nisin和0.012%茶多酚的组方可以延长鲜湿面的货架期达到48h,在室温和相对湿度60%环境中产品符合国家标准,菌落总数小于5.0 lg(CFU/g),风味良好。对照组样品在相同条件下,12 h菌落总数超标,吸水率下降26.07%,失去食用价值。

关键词：鲜湿面复合生物保鲜剂货架期:品质

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基于多分辨率-多边形单元建模策略的多材料结构动刚度拓扑优化方法

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工程力学 2024年第2期41卷 222-235页

作者：江旭东马佳琪熊志滕晓艳王亚萍哈尔滨理工大学机械动力工程学院哈尔滨150080 哈尔滨工程大学机电工程学院哈尔滨150001

利用多边形有限单元的高精度求解优势,融合多分辨率拓扑优化方法,实现粗糙位移网格条件下的高分辨率构型设计,由此提出多材料结构动刚度问题的拓扑优化方法。将多边形单元(位移场求解单元)劈分为精细的小单元,构造设计变量与密度变量的... 详细信息

利用多边形有限单元的高精度求解优势,融合多分辨率拓扑优化方法,实现粗糙位移网格条件下的高分辨率构型设计,由此提出多材料结构动刚度问题的拓扑优化方法。将多边形单元(位移场求解单元)劈分为精细的小单元,构造设计变量与密度变量的重叠网格,形成多分辨率-多边形单元的优化建模策略;以平均动柔度最小化为目标和多材料的体积占比为约束,建立多材料结构的动力学拓扑优化模型,通过HHT-α方法求解结构动响应,采用伴随变量法推导目标函数和约束的灵敏度表达式,利用基于敏度分离技术的ZPR设计变量更新方案构建多区域体积约束问题的优化迭代格式;通过典型数值算例分析优化方法的可行性和动态载荷作用时间对优化结果的影响机制。

关键词：拓扑优化多材料多分辨率多边形单元动刚度优化

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