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Modulating structural oxygen/crystallinity enables ambient cascade photo-upgrading of biomass saccharides to lactic acid

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Carbon Energy 2025年第3期7卷 91-109页

作者： Jinshu Huang Yan ding Jie Li Zhao Hu Shunmugavel Saravanamurugan Junqi Wang Yaqiong Su Song Yang Hu Li State Key Laboratory of Green Pesticide Key Laboratory of Green Pesticide&Agricultural BioengineeringMinistry of EducationState-Local Joint Laboratory for Comprehensive Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyangGuizhouChina Laboratory of Bioproduct Chemistry Centre of Innovative and Applied Bioprocessing(CIAB)MohaliPunjabIndia Department of Earth and Environmental Science School of Human Settlements and Civil EngineeringXi'an Jiaotong UniversityXi'anShaanxiChina School of Chemistry Engineering Research Center of Energy Storage Materials and Devices of Ministry of EducationNational Innovation Platform(Center)for Industry-Education Integration of Energy Storage TechnologyXi'an Jiaotong UniversityXi'anChina

Photocatalytic transformation of biomass into biofuels and value-added chemicals is of great significance for carbon ***-free carbon nitride has extensive applications but with almost no absorption and utilization of near-infrared light,accounting for 50%of ***,a molten salt-assisted in-plane“stitching”and interlayer“cutting”protocol is developed for constructing a highly crystalline carbon nitride catalyst containing structural oxygen(HC-CN).HC-CN is highly efficient for the photothermal cascade transformation of biomass-derived glucose into lactic acid(LA)with an unprecedented yield(94.3%)at 25°C under full-spectrum light irradiation within 50 min,which is also applicable to quantitatively photo-upgrading various *** calculations expound that the light-induced glucose-to-catalyst charge transfer can activate the Cβ-H bond to promote the rate-determining step of intramolecular hydrogen shift in glucose-to-fructose ***,the introduced structural oxygen in HC-CN can not only facilitate the local electric field formation to achieve rapid charge transport/separation and regulate selective·O^(-)_(2)generation for oriented C3-C4 bond cleavage of fructose but also narrow the energy band gap to broaden the light absorption range of HC-CN,contributing to enhanced LA production without exogenous ***,HC-CN is highly recyclable and exhibits negligible environmental burden and low energy consumption,as disclosed by the life cycle *** construction of full-spectrum light adsorption and versatile reaction sites provides a reference for implementing multi-step biomass and organic conversion processes under mild conditions.

关键词： biomass valorization lactic acid life cycle assessment photocatalysis pyroelectric effect

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Automatic Action Space Curriculum Learning with dynamic Per-Step Masking 19

Automatic Action Space Curriculum Learning with Dynamic Per-...

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19th IEEE International Conference on Automation Science and engineering, CASE 2023

作者： Yasutomi, André Yuji Ogata, Tetsuya Hitachi Ltd Center for Technology Innovation R&d Group Robotics Research Department Japan Graduate School of Fundamental Science and Engineering Waseda University Department of Intermedia Art and Science Japan Waseda University Japan

ISBN: (纸本)9798350320695

Curriculum learning (CL) based on action space is an effective approach to deep reinforcement learning (drL) in high-dimensional action spaces with limited training data. However, it can be challenging to determine which part of the action space to focus on during training. We propose an automatic CL approach that dynamically changes the action space using masking. Our approach selects the part of the action space based on its learning progress at each step of the training process, rather than every episode, which encourages the policy to explore actions that are learning faster. At the same time, it allows the policy to learn coordination among other actions. To evaluate the proposed CL approach, we tested it on an industrial robot performing the anchor bolt insertion task, which is in high demand for automation in the construction industry. The results indicate that our approach improved the learning performance of the drL policy, resulting in better task execution. The policies trained with our approach outperformed those trained from scratch and those trained with similar action-space CL approaches. Although we only tested our approach on the anchor bolt insertion task, we believe it can be applied to other drL policies with high-dimensional discrete action spaces. Overall, our automated CL approach shows promise for improving the automation of field tasks with real robots. © 2023 IEEE.

关键词： Construction industry

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Advances in magnetic-assisted triboelectric nanogenerators:structures,materials and self-sensing systems

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International Journal of Extreme Manufacturing 2024年第5期6卷 162-188页

作者： Pengfan Wu Chenxi Zhao Endian Cui Shiwei Xu Tao Liu Fayang Wang Chengkuo Lee Xiaojing Mu Key Laboratory of Optoelectronic Technology&Systems Ministry of Education International R&D Center of Micro-Nano Systems and New Materials TechnologyChongqing UniversityChongqing 400044People’s Republic of China Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore

Triboelectric nanogenerators(TENG),renowned for their remarkable capability to harness weak mechanical energy from the environment,have gained considerable attention owing to their cost-effectiveness,high output,and *** review provides a unique perspective by conducting a comprehensive and in-depth analysis of magnetically assisted TENGs that encompass structures,materials,and self-powered sensing *** systematically summarize the diverse functions of the magnetic assistance for TENGs,including system stiffness,components of the hybrid electromagnetic-triboelectric generator,transmission,and interaction *** the material domain,we review the incorporation of magnetic nano-composites materials,along with ferrofluid-based TENG and microstructure verification,which have also been summarized based on existing ***,we delve into the research progress on physical quantity sensing and human-machine interface in magnetic-assisted *** analysis highlights that magnetic assistance extends beyond the repulsive and suction forces under a magnetic field,thereby playing multifaceted roles in improving the output performance and environmental adaptability of the ***,we present the prevailing challenges and offer insights into the future trajectory of the magnetic-assisted TENGs development.

关键词： triboelectric nanogenerator magnetic assistance tuning structure controlled material preparation self-powered system

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Structurally diverse Limonoids from Trichilia connaroides and Their Antitumor Activities

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Chinese Journal of Chemistry 2024年第24期42卷 3567-3580页

作者： Ying Yan dan Wang Fang-Jiao Zhou Yu-Han Zhao Xu-Jie Qin Yu Zhang Xiao ding Xiao-Jiang Hao State Key Laboratory of Functions and Applications of Medicinal Plants & College of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&DGuizhou Medical UniversityGuiyangGuizhou 550014China School of Medicine and Health Management Guizhou Medical UniversityGuiyangGuizhou 550025China Key Laboratory of Phytochemistry and Natural Medicines Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

Twelve new limonoids(1—12),named trichilitins A—L,were isolated from the leaves and twigs of Trichilia connaroides,together with ten known compounds(13—22).The structures were elucidated by extensive spectroscopic investigations,X-ray diffraction analyses,and ECd *** 1,which belongs to a unique class of ring B-seco limonoid,has been identified as 6/7/6/5 tetracyclic due to a key Baeyer-Villiger *** 2—7 were identified as ring intact limonoids,while compounds 8—10 were established as ring d-seco ones,and 11 and 12 were determined to be rearranged *** of the compounds were tested for cytotoxicity against three human tumor cell lines(HCT-116,NCl-H1975,and SH-SY5Y).Compounds 6,7,13,14,and 19 exhibited significant cytotoxic effects,especially 7 exhibited significant cytotoxic effects against HCT-116 with an IC_(50)value of 0.035μmol·L^(–1)and was more active than the positive control,doxorubicin with an IC_(50)value of 0.20μmol·L^(–1).Compound 7 effectively induced apoptosis of HCT-116,which was associated with S-phase cell cycle ***,the Western blot analysis showed that compound 7 could induce cell cycle arrest by promoting the expression levels of p53 and p21.

关键词： Natural products Limonoids Meliaceae Structure elucidation Trichilia connaroides Antitumor activities p53 and p21 Structure-activity relationships Cancer treatment

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Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors

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Journal of Environmental Sciences 2025年第5期151卷 410-423页

作者： Se Hun Lee Kang Hyun Lee Sang-hwa Lee Soo Kweon Lee Ok Sung Jeon Young Pyo Jeon dongpyo Hong Young Joon Yoo Sang Yoon Park Hah Young Yoo Advanced Institute of Convergence Technology(AICT) Seoul National UniversitySuwon 16229Republic of Korea Department of Biotechnology Sangmyung University20 Hongjimun 2-GilJongno-GuSeoul 03016Republic of Korea Department of Bio-Convergence Engineering Dongyang Mirae University445-8Gyeongin-roGuro-guSeoul 08221Republic of Korea Fermentation team Lotte R&D Center210 Magokjungang-RoGangseo-GuSeoul 07594Republic of Korea School of Electronic Engineering Kyonggi UniversityGyeonggi-do 16227Republic of Korea

Microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and ***,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is *** this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into *** converted biochar was proved to be nitrogen-doped biochar(NdB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a *** NdB electrode(NdB-E)in half-cell showed a maximum specific capacitance of 191 F/*** a full-cell test,the NdB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 *** conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor *** approach is the first to convert *** into active materials for supercapacitors.

关键词： Microalgae Tetraselmis suecica Carbonization N-doped biochar Supercapacitor

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Investigating formate tolerance mechanisms in Saccharomyces cerevisiae and its application

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Green Carbon 2023年第1期1卷 65-74页

作者： Kai Wang Yining Liu Zhuoheng Wu Yilu Wu Haoran Bi Yanhui Liu Meng Wang Biqiang Chen Jens Nielsen Zihe Liu Tianwei Tan National Energy R&D Center for Biorefnery Beijing Key Lab of BioprocessCollege of Life Science and TechnologyBeijing Advanced Innovation Center for Soft MatterScience and EngineeringBeijing University of Chemical TechnologyNo.15 North 3rd Ring Rd East100029 BeijingPR China Department of Biology and Biological Engineering Chalmers University of TechnologySE41296 GothenburgSweden

Current global energy and environmental crisis have spurred efforts towards developing sustainable biotechnological solutions,such as utilizing CO_(2) and its derivatives as raw *** is an attractive onecarbon source due to its high solubility and low reduction ***,the regulatory mechanism of formate metabolism in yeast remains largely *** study employed adaptive laboratory evolution(ALE)to improve formate tolerance in Saccharomyces cerevisiae and characterized the underlying molecular *** evolved strain was applied to produce free fatty acids(FFAs)under high concentration of formate with glucose *** results showed that the evolved strain achieved a FFAs titer of 250 mg/***,this study sheds light on the regulatory mechanism of formate tolerance and provides a platform for future studies under high concentrations of formate.

关键词： Formate tolerance Adaptive laboratory evolution Saccharomyces cerevisiae Free fatty acids

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Unraveling the effects of P and S doping over g-C3N4 in strengthening Lewis basicity for CO2/glycerol conversion: A theoretical and experimental study

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Carbon 2023年 201卷 129-140页

作者： Fao, Gossa dare Catherine, Hepsiba Niruba Huang, Chun-Hao Lee, Yi-Lin Jiang, Jyh-Chiang Hu, Chechia Department of Chemical Engineering National Taiwan University of Science and Technology Daan Dist. Taipei City106 Taiwan Department of Chemical Engineering Chung Yuan Christian University Chungli Dist. Taoyuan City320 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Chungli Dist. Taoyuan City320 Taiwan

Conversion of CO2 to chemicals and fuels has attracted considerable attention as CO2 is a nontoxic, non-flammable, and cheap carbon-oxygen source. However, the kinetics of CO2 conversion into other chemicals remains a challenge due to its thermodynamic stability. Herein, P and S co-doped graphitic-carbon nitride (PSCN) catalyst was synthesized through one-step thermal condensation to improve its Lewis acidity and basicity and investigate carbon dioxide/glycerol (CO2/GLY) conversion. The catalytic GLY conversion at 210 °C reached 60% and 85% using pristine g-C3N4 (CN) and PSCN, respectively, with CO2 as a carbon feedstock and CH3CN as a dehydrating agent. density-functional theory (dFT) calculations revealed that the efficient charge transfer resulting from P and S doping could increase the catalytic activity for CO2/GLY conversion by lowering the activation barrier. This is the first study to demonstrate the catalytic activity of the PSCN catalyst for the CO2/GLY conversion and the computational work for the GLY carboxylation reaction. Moreover, the interaction site and adsorption energy were investigated for the adsorption of CO2 and GLY on PSCN and CN to elucidate the reaction mechanism. Our results demonstrated that PSCN could serve as a superior catalyst and pave new light for CO2/GLY conversion. © 2022 Elsevier Ltd

关键词： Carbon dioxide

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3d Point Cloud Classification Based on Convolutional Neural Network 4th

3D Point Cloud Classification Based on Convolutional Neural ...

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4th EAI International Conference on 6G for Future Wireless Networks, 6GN 2021

作者： Lu, Jianrui Kang, Wenjing Ma, ruofei Qin, Zhiliang Department of Communication Engineering Harbin Institute of Technology Weihai Weihai China Technology R&D Center Weihai Beiyang Electric Group Co. Ltd Weihai China

ISBN: (纸本)9783031042447

With the development of science and technology, the requirements for 3d point cloud classification are increasing. Methods that can directly process point cloud has the advantages of small calculation amount and high real-time performance. Hence, we proposed a novel convolutional neural network(CNN) method to directly extract features from point cloud for 3d object classification. We firstly train a pre-training model with ModelNet40 dataset. Then, we freeze the first five layers of our CNN model and adjust the learning rate to fine tune our CNN model. Finally, we evaluate our methods by ModelNet40 and the classification accuracy of our model can achieve 87.8% which is better than other traditional approaches. We also design some experiments to research the effect of T-Net proposed by Charles r. Qi et al. on 3d object classification. In the end, we find that T-Net has little effect on classification task and it is not necessary to apply in our CNN. © 2022, ICST Institute for Computer Sciences, Social Informatics and Telecommunications engineering.

关键词： Convolutional neural networks

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development of ternary hybrid composites of transition metal and noble metal-based heterostructures: Ultrasensitive simultaneous electrochemical detection of bisphenol A and bisphenol S in food samples

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Food Chemistry 2024年 459卷 140451页

作者： Nandhini, Chinnathambi Huang, Chi-Hsien Mani, Govindasamy Arul, Ponnusamy Huang, Sheng-Tung Department of Materials Engineering Ming Chi University of Technology New Taipei City24303 Taiwan Center for Plasma and Thin Film Technologies Biochemical Technology R&D Center Ming Chi University of Technology New Taipei City243303 Taiwan College of Engineering Chang Gung University Taoyuan City33302 Taiwan International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City243301 Taiwan Institute of Biochemical and Biomedical Engineering Department of Chemical Engineering and Biotechnology National Taipei University of Technology Taipei10608 Taiwan

Bisphenols threaten human health and sensitive detection is crucial. The present study aims to develop ternary composites of copper metal-organic framework (Cu-MOF) with Au[sbnd]Ag microstructures. The composite structure was formed by a galvanic displacement reaction and confirmed using SEM. A binder-free catalyst was used to study the electrochemical redox reaction of bisphenol A (BPA) and bisphenol S (BPS);an irreversible cyclic voltammetric signal at +0.70 V and + 0.91 V (vs. Ag/AgCl), in the dynamic range of 20 nM to 2.0 mM, and 10 nM to 1.0 mM, with limits of detection of 2.9 nM, and 3.2 nM (S/N = 3) was obtained. Practical analysis was applied to frozen tomatoes, tuna fish, milk powder, PET bottles, raw milk, and urine samples with a recovery rate of 94.00–100.80% (n = 3). Voltammetric results were validated using HPLC detection with high precision. The sensor is a promising alternative platform for measuring BPA in food samples. © 2024

关键词： Phenols

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A scaffold with zinc-whitlockite nanoparticles accelerates bone reconstruction by promoting bone differentiation and angiogenesis

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Nano research 2023年第1期16卷 757-770页

作者： Mingming Wang Jiaxin Yao Shihong Shen Chunning Heng Yanyi Zhang Tao Yang Xiaoyan Zheng Shaanxi Key Laboratory of Degradable Biomedical Materials Shaanxi R&D Center of Biomaterials and Fermentation EngineeringSchool of Chemical EngineeringNorthwest UniversityXi’an 710069China Biotech.&Biomed.Research Institute Northwest UniversityXi’an 710069China Xi’an Giant Biogene Technology Co. Ltd.Xi’an 710069China Shaanxi Key Laboratory for Theoretical Physics Frontiers Institute of Modern PhysicsNorthwest UniversityXi’an 710127China

The therapy of bone defects based on advanced biological scaffolds offers the most promising therapeutic strategy for bone *** is still challenging to develop scaffolds with the mechanical,osteogenic,angiogenic,and antibacterial properties required for bone defect ***,a novel organic/inorganic composite scaffold(zinc-whitlockite(ZnWH)/G/H)was synthesized using gellan gum(GG),human-like collagen(HLC),and ZnWH *** scaffold had excellent mechanical properties,adjustable swelling ratio,and interconnected pore *** addition to its excellent biocompatibility,it could promote osteogenic differentiation by releasing ZnWH nanoparticles to stimulate human bone marrow mesenchymal stem cells(hBMSCs)to upregulate the levels of alkaline phosphatase(ALP),osteocalcin(OCN),and osteopontin(OPN).In addition,this study showed that ZnWH nanoparticles could also promote angiogenesis by upregulating the paracrine secretion of vascular endothelial growth factor(VEGF)in *** the same time,the scaffold could inhibit the proliferation of *** 12 weeks of treatment in the rabbit femoral defect model,the ZnWH/G/H scaffold significantly accelerated the process of bone ***,these results demonstrate that the prepared novel nanocomposite scaffold,ZnWH/G/H,offers a promising candidate for bone regeneration.

关键词： bone repair nanocomposite scaffold zinc-whitlockite osteogenesis angiogenesis

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