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Chinese Chemical Letters 2024年第4期35卷 409-413页

作者： Chaoqun Ma Yuebo wang Ning Han Rongzhen Zhang Hui Liu Xiaofeng Sun lingbao Xing School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000China Department of Materials Engineering KU LeuvenLeuven 3001Belgium

In this work, we designed and synthesized cationic carbon dots(CDs) with a size distribution of 1.6–3.7 nm, which exhibited dark blue fluorescence in the aqueous solution. Based on its excellent luminescence properties, we used it as an energy donor to construct a sequential artificial light-harvesting system(LHS) by employing the energy-matching dyes eosin Y disodium salt(EY) and sulforhodamine101(SR101), which could regulate the white light emission(Commission Internationale de l'Eclairage(CIE) coordinate:(0.30, 0.31)) with the energy transfer efficiency(ΦET) of 53.9% and 20.0%. Moreover, a single-step artificial LHS with white light emission(0.32, 0.28) can be constructed directly using CDs and dye solvent 43(SR) with ΦETand antenna effect(AE) of 48.8% and 6.5, respectively. More importantly,CDs-based artificial LHSs were firstly used in photocatalytic of α-bromoacetophenone, with a yield of90%. This work not only provides a new strategy for constructing CDs-based LHSs, but also opens up a new application for further applying the energy harvested in CDs-based LHSs to the field of the aqueous solution photocatalysis.

关键词： Carbon dots White light emission Energy transfer Antenna effect Artificial light-harvesting system Photocatalysis

Preparation of composite adsorbent with high performance of heat and mass transfer

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Chinese Science Bulletin 2013年第30期58卷 3709-3714页

作者： BU XianBiao LU ZhenNeng wang lingbao Key Laboratory of Renewable Energy and Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of Sciences

To develop a new composite adsorbent with high performance,fir sawdust and CaCl2are selected as raw materials.The mass transfer is enhanced by carbonizing and activating the sawdust and heat transfer is enhanced by adding expanded graphite into the adsorbent.The effect of the preparation temperature and the expanded graphite content on the adsorption performance is investigated.The results show that the new adsorbent exhibits a high adsorption performance due to its high porosity,uniform distribution and high content of CaCl2and high thermal conductivity.Also,the experimental results indicate that the rate of ammonia adsorption on the adsorbent depends on the expanded graphite content and the carbonization and activation temperature.The adsorbent prepared at 500°C and with the expanded graphite content of 30%has the best performance in terms of the adsorption refrigeration,which adsorbs ammonia as high as 0.37 g g 1at 10 min.

关键词：复合吸附剂传质性能制备方法传热增强膨胀石墨吸附性能活化温度石墨含量

Thermo-economic Investigation of an Enhanced Geothermal System Organic Rankine Cycle and Combined Heating and Power System

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 1958-1966页

作者： wang lingbao BU Xianbiao LI Huashan Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China CAS Key Laboratory of Renewable Energy Guangzhou 510640China

As a potentially viable renewable energy, Enhanced Geothermal Systems(EGSs) extract heat from hot dry rock(HDR) reservoirs to produce electricity and heat, which promotes the progress towards carbon peaking and carbon neutralization. The main challenge for EGSs is to reduce the investment cost. In the present study, thermo-economic investigations of EGS projects are conducted. The effects of geofluid mass flow rate, wellhead temperature and loss rate on the thermo-economic performance of the EGS organic Rankine cycle(ORC) are studied. A performance comparison between EGS-ORC and the EGS combined heating and power system(CHP) is presented. Considering the CO_(2)emission reduction benefits, the influence of carbon emission trading price on the levelized cost of energy(LCOE) is also presented. It is indicated that the geofluid mass flow rate is a critical parameter in dictating the success of a project. Under the assumed typical working conditions, the LCOE of EGS-ORC and EGS-CHP systems are 24.72 and 16.1 cents/k Wh, respectively. Compared with the EGS-ORC system, the LCOE of the EGS-CHP system is reduced by 35%. EGS-CHP systems have the potential to be economically viable in the future. With carbon emission trading prices of 12.76 USD/ton, the LCOE can be reduced by approximately 8.5%.

关键词： enhanced geothermal system organic Rankine cycle combined heating and power system thermo-economic investigation carbon emission reduction

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基于热流固耦合的单井增强地热系统数值模拟

哈尔滨工程大学学报 2024年第6期45卷 1066-1075页

作者：郭志鹏卜宪标赵源李华山王令宝中国科学技术大学工程科学学院安徽合肥230026 中国科学院广州能源研究所广东广州510640 中国电建集团华东勘测设计研究院有限公司浙江杭州311122

为提高深井换热器的取热效率,借鉴干热岩的开发思路,本文提出了一种单井增强地热系统。对单井套管底部岩体进行小范围压裂改造,将单井套管由封闭式系统改为开式系统来提高单井系统的取热性能。建立了热-流-固耦合的三维非稳态数值模型,... 详细信息

为提高深井换热器的取热效率,借鉴干热岩的开发思路,本文提出了一种单井增强地热系统。对单井套管底部岩体进行小范围压裂改造,将单井套管由封闭式系统改为开式系统来提高单井系统的取热性能。建立了热-流-固耦合的三维非稳态数值模型,研究了单井增强地热系统的系统性能表现和各关键参数的影响。结果表明:与传统深井换热器相比,单井增强地热系统的取热性能有较大提升,相同注入工况下,生产温度和取热功率分别提高了62.21℃和2 612.99 kW;从地热工程周期和优化角度出发,单井增强地热系统流量控制在10 kg/s较为适宜,过小的单井增强地热系统流量导致取热效率较低,过大使得系统运行寿命较短;增大井筒封隔间距、减小内管导热系数是提高系统取热性能的有效方法。本文研究可为单井增强地热系统的理论分析和实际应用提供参考。

关键词：地热能深井换热器增强型地热系统单井多孔介质压裂储层渗透率热流固耦合

猴痘病毒A5L蛋白的原核表达及其免疫原性评价

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中国畜牧兽医 2024年第1期51卷 365-372页

作者：熊嘉琦贾梦乐杨领弟王毅豪孙静婷王婷黎美凤孔令保彭棋江西农业大学生物科学与工程学院南昌330045 南昌市动物病毒与基因工程重点实验室南昌330045

【目的】获取高纯度猴痘病毒(Monkeypox virus, MPXV)A5L蛋白,制备小鼠抗A5L高效价抗血清,为MPXV A5L蛋白功能研究及相关诊断试剂的研发提供材料。【方法】构建重组质粒pET-28a-A5L,转化大肠杆菌BL21(DE3)感受态细胞进行诱导表达,通过... 详细信息

【目的】获取高纯度猴痘病毒(Monkeypox virus, MPXV)A5L蛋白,制备小鼠抗A5L高效价抗血清,为MPXV A5L蛋白功能研究及相关诊断试剂的研发提供材料。【方法】构建重组质粒pET-28a-A5L,转化大肠杆菌BL21(DE3)感受态细胞进行诱导表达,通过分析不同IPTG诱导浓度、诱导温度、诱导时间条件下重组蛋白A5L表达情况,筛选最佳表达条件。通过Western blotting鉴定重组蛋白A5L表达,利用SDS-PAGE分析重组蛋白可溶性。A5L蛋白经His-Bind镍柱亲和层析纯化后免疫小鼠,通过ELISA法检测抗体效价。【结果】双酶切和测序结果显示,原核表达载体pET-28a-A5L构建成功。Western blotting结果显示重组蛋白A5L在大肠杆菌BL21(DE3)感受态细胞中成功表达;A5L蛋白在诱导温度42℃、诱导剂(IPTG)浓度为1.6 mmol/L、诱导16 h后表达量最高,大小为40 ku。SDS-PAGE分析结果显示,A5L蛋白主要以包涵体形式存在,最佳咪唑洗脱浓度为50 mmol/L。ELISA结果显示,制备的鼠抗A5L蛋白抗体最高效价达1∶205 440。【结论】本研究成功构建了重组质粒pET-28a-A5L,并在原核表达系统中成功表达重组蛋白A5L,制备的A5L多克隆抗体具有较好的免疫原性,研究结果为进一步探究MPXV A5L蛋白的生物学功能奠定基础。

关键词：猴痘病毒原核表达 A5L蛋白免疫原性

Designing Oxide Catalysts for Oxygen Electrocatalysis: Insights from Mechanism to Application

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Nano-Micro Letters 2023年第10期15卷 514-546页

作者： Ning Han Wei Zhang Wei Guo Hui Pan Bo Jiang lingbao Xing Hao Tian Guoxiu wang Xuan Zhang Jan Fransaer Department of Materials Engineering KU Leuven3001 LeuvenBelgium ZJU‑Hangzhou Global Scientific and Technological Innovation Centre Zhejiang UniversityHangzhou 311200People’s Republic of China Department of Physics and Astronomy KU Leuven3001 LeuvenBelgium Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of TechnologyDalian 116023People’s Republic of China School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000People’s Republic of China Centre for Clean Energy Technology Faculty of ScienceUniversity of Technology SydneyBroadwayPO Box 123UltimoNSW 2007Australia

The electrochemical oxygen reduction reaction(ORR) and oxygen evolution reaction(OER) are fundamental processes in a range of energy conversion devices such as fuel cells and metal–air batteries. ORR and OER both have significant activation barriers, which severely limit the overall performance of energy conversion devices that utilize ORR/OER. Meanwhile, ORR is another very important electrochemical reaction involving oxygen that has been widely investigated. ORR occurs in aqueous solutions via two pathways: the direct 4-electron reduction or 2-electron reduction pathways from O_(2) to water(H_2O) or from O_(2) to hydrogen peroxide(H_2O_(2)). Noble metal electrocatalysts are often used to catalyze OER and ORR, despite the fact that noble metal electrocatalysts have certain intrinsic limitations, such as low storage. Thus, it is urgent to develop more active and stable low-cost electrocatalysts, especially for severe environments(e.g., acidic media). Theoretically, an ideal oxygen electrocatalyst should provide adequate binding to oxygen species. Transition metals not belonging to the platinum group metal-based oxides are a low-cost substance that could give a d orbital for oxygen species binding. As a result, transition metal oxides are regarded as a substitute for typical precious metal oxygen electrocatalysts. However, the development of oxide catalysts for oxygen reduction and oxygen evolution reactions still faces significant challenges, e.g., catalytic activity, stability, cost, and reaction mechanism. We discuss the fundamental principles underlying the design of oxide catalysts, including the influence of crystal structure, and electronic structure on their performance. We also discuss the challenges associated with developing oxide catalysts and the potential strategies to overcome these challenges.

关键词： Oxygen evolution Oxygen reduction Oxide catalysts Catalyst design Fuel cell Metal–air batteries

Thermo-Economic Performance of Geothermal Driven High-Temperature Flash Tank Vapor Injection Heat Pump System:A Comparison Study

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Energy Engineering 2023年第8期120卷 1817-1835页

作者： Huashan Li Xiaoshuang Zhao Sihao Huang lingbao wang Jiongcong Chen Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou510640China University of Chinese Academy of Sciences Beijing100049China

Process heating constitutes a significant share of final energy consumption in the industrial sector around the world.In this paper,a high-temperature heat pump(HTHP)using flash tank vapor injection technology(FTVI)is proposed to develop low-temperature geothermal source for industrial process heating with temperature above 100°C.With heat sink output temperatures between 120°C and 150°C,the thermo-economic performance of the FTVI HTHP system using R1234ze(Z)as refrigerant is analyzed and also compared to the single-stage vapor compression(SSVC)system by employing the developed mathematical model.The coefficient of performance(COP),exergy efficiency(ηexe),net present value(NPV)and payback period(PBP)are used as performance indicators.The results show that under the typical working conditions,the COP andηexe of FTVI HTHP system are 3.00 and 59.66%,respectively,and the corresponding NPV and PBP reach 8.13×106 CNY and 4.13 years,respectively.Under the high-temperature heating conditions,the thermo-economic performance of the FTVI HTHP system is significantly better than that of the SSVC system,and the larger the temperature lift,the greater the thermo-economic advantage of the FTVI HTHP system.Additionally,the FTVI HTHP system is more capable than the SSVC system in absorbing the financial risks associated with changes of electricity price and natural gas price.

关键词： Geothermal water high-temperature heat pump flash tank vapor injection thermo-economic performance

Artificial light-harvesting systems and their applications in photocatalysis and cell labeling

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ChemPhysMater 2022年第4期1卷 281-293页

作者： Ying wang Ning Han Xinglong Li Shengsheng Yu lingbao Xing School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000China Department of Materials Engineering KU LeuvenLeuven 3001Belgium

Photosynthesis is the basis for the survival of organisms in nature;consequently,the fabrication of artificial light-harvesting systems(LHSs)that simulate natural photosynthesis is of significant interest.Recently,a variety of artificial LHSs have been successfully constructed using fluorescence resonance energy transfer(FRET).However,it is crucial to fabricate artificial LHSs with a sequential energy transfer process when considering that the natural photosynthetic process involves a multistep sequential energy transfer process rather than a simple one-step energy transfer.Moreover,many previously reported LHSs have been used as imaging agents for cell labeling and bioimaging or as catalysts in photocatalytic reactions,showing promise for applications simulating natural photosynthesis.In this review,we have summarized recently published representative work on artificial LHSs.In addition,the application of LHSs in photocatalysis and cell labeling has been described in detail.

关键词： Light-harvesting systems Sequential energy transfer Photocatalysis Cell labeling

Tenecteplase versus alteplase in treatment of acute ST-segment elevation myocardial infarction:A randomized non-inferiority trial

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Chinese Medical Journal 2024年第3期137卷 312-319页

作者： Xingshan Zhao Yidan Zhu Zheng Zhang Guizhou Tao Haiyan Xu Guanchang Cheng Wen Gao Liping Ma Liping Qi Xiaoyan Yan Haibo wang Qingde Xia Yuwang Yang Wanke Li Juwen Rong Limei wang Yutian Ding Qiang Guo Wanjun Dang Chen Yao Qin Yang Runlin Gao Yangfeng Wu Shubin Qiao Department of Cardiology Beijing Jishuitan HospitalCapital Medical UniversityThe Fourth Clinical Medical College of Peking UniversityBeijing 100035China Peking University Clinical Research Institute Peking University First HospitalBeijing 100191China Department of Cardiology The First Hospital of Lanzhou UniversityLanzhouGansu 730013China Department of Cardiology The First Affiliated Hospital of Liaoning Medical UniversityJinzhouLiaoning 110002China Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100037China Department of Cardiology Huaihe Hospital of Henan UniversityKaifengHenan 450001China Department of Cardiology Bayannur HospitalBayannurInner Mongolia 015208China Department of Cardiology Puyang People’s HospitalPuyangHenan 457099China Department of Cardiology Xingtai Third HospitalXingtaiHebei 054099China Department of Cardiology Lintao County People’s HospitalDingxiGansu 730599China Department of Cardiology Dancheng County People’s HospitalZhoukouHenan 477150China Department of Cardiology The First People’s Hospital of LingbaoSanmenxiaHenan 472500China Department of Cardiology Shanyin County People’s HospitalShuozhouShanxi 036999China Department of Cardiology Uxin Banner People’s HospitalOrdosInner Mongolia 017399China Department of Cardiology Lingqiu County People’s HospitalDatongShanxi 034499China Department of Cardiology Huaibin County People’s HospitalXinyangHenan 464411China Department of Cardiology Tianzhu County People’s HospitalWuweiGansu 733200China Guangzhou Recomgen Biotech Co. LtdGuangzhouGuangdong 510530China

Background:A phase II trial on recombinant human tenecteplase tissue-type plasminogen activator(rhTNK-tPA)has previously shown its preliminary efficacy in ST elevation myocardial infarction(STEMI)patients.This study was designed as a pivotal postmarketing trial to compare its efficacy and safety with rrecombinant human tissue-type plasminogen activator alteplase(rt-PA)in Chinese patients with STEMI.Methods:In this multicenter,randomized,open-label,non-inferiority trial,patients with acute STEMI were randomly assigned(1:1)to receive an intravenous bolus of 16 mg rhTNK-tPA or an intravenous bolus of 8 mg rt-PA followed by an infusion of 42 mg in 90 min.The primary endpoint was recanalization defined by thrombolysis in myocardial infarction(TIMI)flow grade 2 or 3.The secondary endpoint was clinically justified recanalization.Other endpoints included 30-day major adverse cardiovascular and cerebrovascular events(MACCEs)and safety endpoints.Results:From July 2016 to September 2019,767 eligible patients were randomly assigned to receive rhTNK-tPA(n=384)or rt-PA(n=383).Among them,369 patients had coronary angiography data on TIMI flow,and 711 patients had data on clinically justified recanalization.Both used a–15%difference as the non-inferiority efficacy margin.In comparison to rt-PA,both the proportion of patients with TIMI grade 2 or 3 flow(78.3%[148/189]vs.81.7%[147/180];differences:–3.4%;95%confidence interval[CI]:–11.5%,4.8%)and clinically justified recanalization(85.4%[305/357]vs.85.9%[304/354];difference:–0.5%;95%CI:–5.6%,4.7%)in the rhTNK-tPA group were non-inferior.The occurrence of 30-day MACCEs(10.2%[39/384]vs.11.0%[42/383];hazard ratio:0.96;95%CI:0.61,1.50)did not differ significantly between groups.No safety outcomes significantly differed between groups.Conclusion:rhTNK-tPA was non-inferior to rt-PA in the effect of improving recanalization of the infarct-related artery,a validated surrogate of clinical outcomes,among Chinese patients with acute STEMI.Trial registration:www.ClinicalTrials.gov(No.NCT028355

关键词： Thrombolytic therapy rhTNK-tPA Randomized controlled trial ST elevation myocardial infarction

综合性高分子化学实验设计:硬质聚氨酯泡沫材料制备与性能表征

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大学化学 2024年第4期39卷 206-212页

作者：杨凯毕戈华张永靳德林徐子崴王倩邢令宝山东理工大学化学化工学院山东淄博255000

针对传统“高分子化学实验”课程教学中,存在综合性、研究性实验项目少,不能支撑“新工科”人才实践和创新能力培养要求等问题,开发了硬质聚氨酯泡沫材料制备与性能表征综合实验项目。采用全水发泡体系,通过调节发泡剂和阻燃剂用量,制... 详细信息

针对传统“高分子化学实验”课程教学中,存在综合性、研究性实验项目少,不能支撑“新工科”人才实践和创新能力培养要求等问题,开发了硬质聚氨酯泡沫材料制备与性能表征综合实验项目。采用全水发泡体系,通过调节发泡剂和阻燃剂用量,制备了七组聚氨酯泡沫材料,然后采用国标方法表征了材料的表观密度、压缩强度和氧指数,分析了发泡剂和阻燃剂不同配比对泡沫材料性能的影响及原因。本实验贴近高分子产业发展,突出综合性和研究性,教学过程实现了基本实验技能与科学研究方法训练的有机结合,有助于提升高分子化学实验课程“创新性、高阶性和挑战度”,支撑“新工科”人才培养。

关键词：新工科硬质聚氨酯泡沫高分子化学实验综合实验项目