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Applications of Metal–Organic Frameworks and Their Derivatives in Electrochemical CO_(2)Reduction

Nano-Micro Letters 2023年第8期15卷 72-115页

作者： Chengbo Li Yuan Ji Youpeng Wang Chunxiao Liu Zhaoyang Chen Jialin Tang yawei hong Xu Li Tingting Zheng Qiu Jiang Chuan Xia School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China Research Center for Carbon‑Neutral Environmental and Energy Technology University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China

Electrochemically reducing CO_(2)to more reduced chemical species is a promising way that not only enables the conversion of intermittent energy resources to stable fuels,but also helps to build a closed-loop anthropogenic carbon *** various electrocatalysts for electrochemical CO_(2)reduction,multifunctional metal–organic frameworks(MOFs)have been employed as highly efficient and selective heterogeneous electrocatalysts due to their ultrahigh porosity and topologically diverse *** to now,great progress has been achieved in the design and synthesis of highly active and selective MOF-related catalysts for electrochemical CO_(2)reduction reaction(CO_(2)RR),and their corresponding reaction mechanisms have been thoroughly *** this review,we summarize the recent progress of applying MOFs and their derivatives in CO_(2)RR,with a focus on the design strategies for electrocatalysts and *** first discussed the reaction mechanisms for different CO_(2)RR products and introduced the commonly applied electrolyzer configurations in the current CO_(2)RR ***,an overview of several categories of products(CO,HCOOH,CH_(4),CH_(3)OH,and multi-carbon chemicals)generated from MOFs or their derivatives via CO_(2)RR was ***,we offer some insights and perspectives for the future development of MOFs and their derivatives in electrochemical CO_(2)*** aim to provide new insights into this field and further guide future research for large-scale applications.

关键词： Metal-organic frameworks Derivatives Catalyst CO_(2)reduction reaction Electrocatalysis

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Management of esophageal mucosa with high-grade dysplasia

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The Chinese-German Journal of Clinical Oncology 2008年第3期7卷 138-139页

作者： Jiaqing Xiang,Hecheng Li,Shilei Liu,yawei Zhang,hong Hu,Longfei Ma,Longsheng Miao Department of Thoracic Surgery,Cancer Hospital of Fudan University Department of Oncology,Shanghai Medical College,Fudan University,Shanghai 200032,China Department of Thoracic Surgery Cancer Hospital of Fudan University Fudan China Department of Oncology Shanghai Medical College Fudan University Shanghai China

Objective:Early detection and treatment in patients with esophageal cancer is the most effective way to improve the prognosis. Patients with high-grade dysplasia(HGD) in esophageal mucosa might be involved with early esophageal cancer,but the management of the disease is controversial. The purpose of our study was to explore the management of esophageal mucosa with HGD. Methods:We retrospectively analyzed 10 patients with HGD in esophageal mucosa,who underwent esophagectomy in Cancer Hospital of Fudan University from 1999 to 2006. The surgical approach,postoperative morbidity,in-hospital complications and pathological results of the patients were analyzed. Basing on our data together with other studies,we aimed at looking for an appropriate management for patients with HGD. Results:Of the 10 patients who received esophagectomy,the pathological results showed that 2(20%) cases were in situ carcinoma and 8(80%) cases were invasive cancer with no regional lymph nodes involved. 30-day mortality was 0. One patient experienced cervical anastomotic leakage,but healed in 2 weeks. There was no pulmonary complication. Conclusion:Most patients with HGD actually have occult carcinoma. High percentage of patients with HGD would develop into cancer during their lifetime. Esophagectomy is now a selective approach for the treatment of the patients with HGD.

关键词： esophageal cancer esophageal mucosa with high-grade dysplasia endoscopic biopsy esophagectomy

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以废旧PET为线材的新型3D打印喷头设计研究

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南昌工程学院学报 2017年第4期36卷 86-89页

作者：洪亚威李少波刘广梅杰陶孟仑常李文武汉理工大学智能制造与控制研究所湖北武汉430063

通过对废旧PET塑料瓶进行DSC实验分析,验证了废旧PET塑料瓶进行切丝后作为3D打印材料的可行性,设计了采用正反螺纹螺杆进行挤丝的3D打印喷头,通过三维建模、实物实验分析和ANSYS仿真分析论证了其可行性。

关键词： FDM技术 PET线材正反螺纹螺杆材料改性

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Optimization of H_2O_2 dosage in microwave-H_2O_2 process for sludge pretreatment with uniform design method

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Journal of Environmental Sciences 2012年第12期24卷 2060-2067页

作者： Qingcong Xiao hong Yan Yuansong Wei yawei Wang Fangang Zeng Xiang Zheng Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China School of Environment and Natural Resources Renmin University of ChinaBeijing 100872China CSD IDEA(Beijing)Institute of Environmental Innovation Co.Ltd. Beijing 100192China

A microwave-H202 process for sludge pretreatment exhibited high efticiencies of releasing organics, nitrogen, and phosphorus, but large quantifies of H202 residues were detected. A uniform design method was thus employed in this study to further optimize H202 dosage by investigating effects of pH and H202 dosage on the amount of 1-I202 residue and releases of organics, nitrogen, and phosphorus. A regression model was established with pH and H202 dosage as the independent variables, and H202 residue and releases of organics, nitrogen, and phosphorus as the dependent variables. In the optimized microwave-H202 process, the pH value of the sludge was firstly adjusted to 11.0, then the sludge was heated to 80~C and H202 was dosed at a H202 ：mixed liquor suspended solids （MLSS） ratio of 0.2, and the sludge was finally heated to 100~C by microwave irradiation. Compared to the microwave-H202 process without optimization, the H202 dosage and the utilization rate of H202 in the optimized microwave-H202 process were reduced by 80% and greatly improved by 3.87 times, respectively, when the H202：MLSS dosage ratio was decreased from 1.0 to 0.2, resulting in nearly the same release rate of soluble chemical oxygen demand in the microwave-H202 process without optimization at H202：MLSS ratio of 0.5.

关键词： H2O2 dosage uniform design method microwave optimization sludge pretreatment

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Audio-visual keyword transformer for unconstrained sentence-level keyword spotting

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CAAI Transactions on Intelligence Technology 2024年第1期9卷 142-152页

作者： Yidi Li Jiale Ren yawei Wang Guoquan Wang Xia Li hong Liu Key Laboratory of Machine Perception Peking UniversityShenzhen Graduate SchoolShenzhenChina College of Electronics and Information Engineering Sichuan UniversityChengduChina Department of Computer Science ETH ZurichZurichSwitzerland

As one of the most effective methods to improve the accuracy and robustness of speech tasks,the audio-visual fusion approach has recently been introduced into the field of Keyword Spotting(KWS).However,existing audio-visual keyword spotting models are limited to detecting isolated words,while keyword spotting for unconstrained speech is still a challenging *** this end,an Audio-Visual Keyword Transformer(AVKT)network is proposed to spot keywords in unconstrained video *** authors present a transformer classifier with learnable CLS tokens to extract distinctive keyword features from the variable-length audio and visual *** outputs of audio and visual branches are combined in a decision fusion *** humans can easily notice whether a keyword appears in a sentence or not,our AVKT network can detect whether a video clip with a spoken sentence contains a pre-specified ***,the position of the keyword is localised in the attention map without additional position ***-imental results on the LRS2-KWS dataset and our newly collected PKU-KWS dataset show that the accuracy of AVKT exceeded 99%in clean scenes and 85%in extremely noisy *** code is available at https://***/jialeren/AVKT.

关键词： artificial intelligence multimodal approaches natural language processing neural network speech processing

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Esrrb plays important roles in maintaining self-renewal of trophoblast stem cells (TSCs) and reprogramming somatic cells to induced TSCs

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Journal of Molecular Cell Biology 2019年第6期11卷 463-473页

作者： Haibo Gao Rui Gao Linfeng Zhang Wenchao Xiu Ruge Zang hong Wang Yong Zhang Jiayu Chen yawei Gao Shaorong Gao Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital Shanghai Key Laboratory of Signaling and Disease Research School of Life Sciences and Technology Tongji University Shanghai 200092 China Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program School of Life Sciences Tsinghua University Beijing 100084 China

Trophoblast stem cells (TSCs), which can be derived from the trophoectoderm of a blastocyst, have the ability to sustain self-renewal and differentiate into various placental trophoblast cell types. Meanwhile, essential insights into the molecular mechanisms controlling the placental development can be gained by using TSCs as the cell model. Esrrb is a transcription factor that has been shown to play pivotal roles in both embryonic stem cell (ESC) and TSC, but the precise mechanism whereby Esrrb regulates TSC-specific transcriptome during differentiation and reprogramming is still largely unknown. In the present study, we elucidate the function of Esrrb in self-renewal and differentiation of TSCs, as well as during the induced TSC (iTSC) reprogramming. We demonstrate that the precise level of Esrrb is critical for stem state maintenance and further trophoblast differentiation of TSCs, as ectopically expressed Esrrb can partially block the rapid differentiation of TSCs in the absence of fibroblast growth factor 4. However, Esrrb depletion results in downregulation of certain key TSC-specific transcription factors, consequently causing a rapid differentiation of TSCs and these Esrrb-deficient TSCs lose the ability of hemorrhagic lesion formation in vivo. This function of Esrrb is exerted by directly binding and activating a core set of TSC-specific target genes including Cdx2, Eomes, Sox2, Fgfr4, and Bmp4. Furthermore, we show that Esrrb overexpression can facilitate the MEF-to-iTSC conversion. Moreover, Esrrb can substitute for Eomes to generate GEsTM-iTSCs. Thus, our findings provide a better understanding of the molecular mechanism of Esrrb in maintaining TSC self-renewal and during iTSC reprogramming.

关键词： Esrrb trophoblast stem cell self-renwwal differentiation iTSC reprogramming

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High efficiency D-A structured luminogen with aggregation-induced emission and mechanochromic characteristics

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Chinese Science Bulletin 2013年第22期58卷 2719-2722页

作者： LU yawei TAN YeQiang GONG YongYang LI hong YUAN WangZhang ZHANG YongMing TANG Ben Zhong School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Department of Polymer Science and Engineering Zhejiang University Department of Chemistry The Hong Kong University of Science & Technology

A novel luminogen, CZ2TPAN, with typical D-A architecture was obtained. It shows intramolecular charge transfer and aggregation-induced emission characteristics with high solid-state efficiency of 65.3%. Moreover, it exhibits reversible mechanochromic behavior between crystalline and amorphous states with remarkable emission color change from green (504 nm) to yellow (545nm).

关键词：发光特性诱导 DA 分子内电荷转移排放聚集结构颜色变化

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Low-frequency blue energy harvesting for sustainable and active anticorrosion

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Nano Research 2023年第9期16卷 11871-11877页

作者： Miaomiao Cui yawei Feng Hao Wu Yuankai Jin Wanbo Li Zuankai Wang Department of Mechanical Engineering City University of Hong KongHong KongChina Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong KongChina School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China Interdisciplinary Research Center for Engineering Science School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Engineering materials serving in marine surroundings are inevitably *** corrosive marine conditions can also be utilized to harvest kinetic ocean wave energy to solve this *** water–solid triboelectrification to harvest lowfrequency wave energy for active anticorrosion is *** techniques are efficient in harnessing environmental energy with frequencies higher than 3 Hz,whereas the dominated ocean waves with optimal wave spectral density fluctuate from 0.45 to 1.5 ***,we proposed a highly efficient and sustainable blue energy-powered cathodic protection(BECP)strategy by fusing water–solid triboelectric nanogenerators and cathodic protection *** the highly efficient triboelectrification between the moving water and hydrophobic fluorinated ethylene propylene tube,we developed the built-in power module,enabling the harvest of ocean wave energy lower than 1.5 *** generated volumetric current density is 28.9 mA·m^(-3),5–20 times higher than the values of the reported ***,the proposed BECP performs comparably to conventional cathodic protection in corrosion ***,the proposed approach can be easily applied to ships,buoys,and other offshore platforms to simultaneously realize blue energy harvesting and engineering material protection,providing an alternative to traditional active protection technology.

关键词： corrosion inhibition blue energy harvesting triboelectric nanogenerator cathodic protection

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Highly reliable and efficient encoding systems for hexadecimal polypeptide-based data storage

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Fundamental Research 2023年第2期3卷 298-304页

作者： Yubin Ren Yi Zhang yawei Liu Qinglin Wu hong-Gang Hu Jingjing Li Chunhai Fan Dong Chen Kai Liu hongjie Zhang Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Institute of Process Equipment College of Energy Engineering and State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang UniversityHangzhou 310027China Institute of Translational Medicine Shanghai UniversityShanghai 200444China Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineeringand Institute of Molecular MedicineRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200240China

Polypeptides consisting of amino acid(AA)sequences are suitable for high-density information ***,the lack of suitable encoding systems,which accommodate the characteristics of polypeptide synthesis,storage and sequencing,impedes the application of polypeptides for large-scale digital data *** address this,two reliable and highly efficient encoding systems,***-Arithmetic-Base64-Shuffle-RS(RABSR)and RaptorQArithmetic-Huffman-Rotary-Shuffle-RS(RAHRSR)systems,are developed for polypeptide data *** two encoding systems realized the advantages of compressing data,correcting errors of AA chain loss,correcting errors within AA chains,eliminating homopolymers,and pseudo-randomized *** coding efficiency without arithmetic compression and error correction of audios,pictures and texts by the RABSR system was 3.20,3.12 and 3.53 Bits/AA,*** that using the RAHRSR system reached 4.89,4.80 and 6.84 Bits/AA,*** implemented with redundancy for error correction and arithmetic compression to reduce redundancy,the coding efficiency of audios,pictures and texts by the RABSR system was 4.43,4.36 and 5.22 Bits/AA,*** efficiency further increased to 7.24,7.11 and 9.82 Bits/AA by the RAHRSR system,***,the developed hexadecimal polypeptide-based systems may provide a new scenario for highly reliable and highly efficient data storage.

关键词： Biomaterial Polypeptide Data storage Hexadecimal Encoding system

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大质量细长轴无心磨削的研究

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金刚石与磨料磨具工程 2005年第4期25卷 70-71页

作者：张洪陈亚维中原工学院郑州450007

无心磨削可以较好地解决细长轴的磨削问题,但在无心磨床上对大质量细长轴进行磨削的时候,由于初始和结束时进给速度的不足和在磨削过程中,拉送料速度的波动,造成约15%的材料浪费和32%左右的产品不合格率。本文通过采用积极式接送料装置... 详细信息

无心磨削可以较好地解决细长轴的磨削问题,但在无心磨床上对大质量细长轴进行磨削的时候,由于初始和结束时进给速度的不足和在磨削过程中,拉送料速度的波动,造成约15%的材料浪费和32%左右的产品不合格率。本文通过采用积极式接送料装置,使工件在加工过程中由积极式接送料装置对料坯和工件施加与磨床相匹配的回转运动和轴向运动,杜绝了原材料的浪费,配合其它质量控制方法,将产品合格率提高到98%以上,缩短了加工时间,减少了工序,有效降低了产品的加工成本。

关键词：无心磨床细长轴托架速度匹配

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