检索结果-内蒙古大学图书馆

Highly efficient fused ring electron acceptors based on a new undecacyclic core

MATERIALS CHEMISTRY FRONTIERS 2021年第4期5卷 2001-2006页

作者： Zhao, fuwen He, Dan Xin, Jingming Zhang, Huotian Zhou, Jixiang Lin, Baojun He, Yongju Li, Jiang Ma, Wei Li, Bao Gao, Feng Li, Yongfang wang, Chunru Cent South Univ State Key Lab Powder Met Changsha 410083 Peoples R China Chinese Acad Sci Inst Chem Beijing 100190 Peoples R China Linkoping Univ Dept Phys Chem & Biol IFM SE-58183 Linkoping Sweden Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Peoples R China Henan Normal Univ Sch Chem & Chem Engn Xinxiang 453007 Henan Peoples R China

Two FREAs, IUIC-O and IUIC-T, based on an undecacyclic core were developed. IUIC-T having a higher extinction coefficient affords aligned energy levels with PBDB-T, finer nanoscale morphology and more orderly molecular stacking, thus achieving more efficient exciton dissociation and charge transport. Therefore, the PBDB-T:IUIC-T based OSC gains a higher PCE of 13.05%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

基于加权最小二乘法的变保真代理模型

引用

组合机床与自动化加工技术 2023年第12期 21-24,29页

作者：韩畅阳王硕刘富文宋学官大连理工大学机械工程学院大连116024

构建代理模型所用样本点可以分为高保真(high-fidelity,HF)和低保真(low-fidelity,LF)两类,前者准确率高,后者计算成本低,为了同时发挥两者的优点,提出了一种基于加权最小二乘法的变保真代理模型(MFS-WLS),该模型利用少量HF样本和大量L... 详细信息

构建代理模型所用样本点可以分为高保真(high-fidelity,HF)和低保真(low-fidelity,LF)两类,前者准确率高,后者计算成本低,为了同时发挥两者的优点,提出了一种基于加权最小二乘法的变保真代理模型(MFS-WLS),该模型利用少量HF样本和大量LF样本,计算LF修正因子和差异函数的未知系数以表示高保真响应。将MFS-WLS与工程优化领域常用的两种变保真和一种单保真代理模型进行比较,结果表明MFS-WLS具有较高的预测精度和鲁棒性,最后通过压力机上梁轻量化设计案例进一步验证了模型的实用性。

关键词：变保真代理模型加权最小二乘法优化设计轻量化

来源：评论

学校读者我要写书评

暂无评论

Nutrition and flavor analysis of Spirulina through co-fermentation with Lactobacillus acidophilus and Kluyveromyces marxianus and its effect on attenuating metabolic associated fatty liver disease

引用

JOURNAL OF FUNCTIONAL FOODS 2024年 116卷

作者： Yu, Jinhui Liu, Chao wang, Mingjie Liu, Yuanyuan Ran, Liyuan Yu, Zichao Ma, Deyuan Chen, Gao Han, fuwen You, Shengbo Bi, Yuping Wu, Yingjie Shandong Acad Agr Sci Inst Crop Germplasm Resources Jinan 250100 Peoples R China Shandong Univ Qilu Hosp Jinan 250100 Peoples R China Shandong Normal Univ Coll Life Sci Jinan 250014 Peoples R China Inner Mongolia Med Univ Affiliated Hosp Med Univ Dept Pediat Hohhot 010050 Inner Mongolia Peoples R China Shandong Univ Shandong Prov Hosp Dept Endocrinol Jinan 250021 Peoples R China Shandong Xinchuang Biotechnol Co LTD Jinan 250102 Shandong Peoples R China Shandong First Med Univ & Shandong Acad Med Sci Shandong Lab Anim Ctr Med Sci & Technol Innovat Ctr Jinan 250117 Peoples R China

Spirulina is widely known as the "Super Nutritious Food of the Future" due to its exceptional nutritional properties. In this article, we investigated the effects of fermentation using a combination of Lactobacillus acidophilus KDB-03 and Kluyveromyces marxianus GDMCC 2.119 on Spirulina. Fermentation significantly increased the total flavonoid and phenol levels in Spirulina, and enhanced the 2,2-diphenyl-1-picrylhydrazyl free radical scavenging capacity and ferric-reducing antioxidant power. Untargeted ultra-performance liquid chromatography-electrospray tandem mass spectrometry-based metabolomics and gas chromatography-ion mobility spectrometry analysis revealed alterations in the metabolites and flavor components of fermented Spirulina (FS). Furthermore, a mice experiment demonstrated that FS could effectively alleviate metabolismassociated fatty liver disease (MAFLD) by regulating liver metabolism, intestinal flora, and facilitating communication between the liver and gut. These findings suggest that fermentation could be a innovative approach to enhance the diversity of Spirulina products, and potentially be used as a strategy for the prevention and treatment of MAFLD.

关键词： Spirulina Lactobacillus acidophilus Kluyveromyces marxianus Co -fermentation MAFLD

来源：评论

学校读者我要写书评

暂无评论

Residual bond strengths of epoxy and cement-bonded CFRP reinforcements to concrete interfaces after elevated temperature exposure

引用

FIRE SAFETY JOURNAL 2021年 124卷 103393-103393页

作者： wang, Zhuolin Dai, Jian-Guo wang, Mingqian Chen, Lingzhu Zhang, fuwen Xu, Qingfeng Shanghai Res Inst Bldg Sci Co Ltd Shanghai Key Lab Engn Struct Safety Shanghai 200032 Peoples R China Hong Kong Polytech Univ Dept Civil & Environm Engn Hong Kong Peoples R China

This paper presents the results from a comparative study on the residual bond performance of epoxy and cementbonded carbon fiber-reinforced polymer (CFRP) reinforcement to concrete interfaces that experienced different levels of elevated temperature exposure. In total twelve groups of concrete beams strengthened with CFRP sheet and grids of the same tensile stiffness, through epoxy and cement-based adhesive bonding, respectively, were carefully prepared and exposed to different test temperature levels from 20 degrees C to 600 degrees C. Both polymer cement mortar (PCM) and ductile engineered cementitious composite (ECC) were adopted as the cement binder. The strengthened beams were tested under three-point monotonic bending after different levels of elevated temperature exposure. It was found that with increasing the exposure temperature, the failure modes of the strengthened beams shifted from debonding in a thin layer of concrete substrate to debonding near the fiberadhesive interface and tearing off of CFRP grids from the ECC matrix. The peak loads of concrete beams strengthened with cement-bonded CFRP grids are at least 50% higher than their counterparts strengthened with epoxy-bonded CFRP sheets given the same temperature exposure.

关键词： CFRP reinforcement Concrete Bond behavior Elevated temperature exposure Cement bonding

来源：评论

学校读者我要写书评

暂无评论

永磁直线同步电机力角特性偏移研究

引用

河南理工大学学报(自然科学版) 2025年第3期44卷 138-146页

作者：徐耀晖朱福文高彩霞赵宝森王翰缪庆彬焦作煤业(集团)有限责任公司机电部河南焦作454000 河南理工大学电气工程与自动化学院河南焦作454000 焦作煤业(集团)赵固(新乡)能源有限责任公司河南新乡453000 焦作煤业(集团)新乡能源有限公司机电科河南新乡453000 焦作煤业(集团)有限责任公司中马村矿河南焦作454171

目的力角特性是永磁直线同步电机(permanent magnet linear synchronous motor,PMLSM)运行稳定性的重要特性,是评价电机性能和控制电机的依据。但在低频工况下,PMLSM的力角特性因电枢电阻的影响而存在偏移现象,进而导致利用现有忽略电... 详细信息

目的力角特性是永磁直线同步电机(permanent magnet linear synchronous motor,PMLSM)运行稳定性的重要特性,是评价电机性能和控制电机的依据。但在低频工况下,PMLSM的力角特性因电枢电阻的影响而存在偏移现象,进而导致利用现有忽略电枢电阻的力角特性分析计算电机低速运行特性会存在较大的偏差。为此,对PMLSM低频低速下的力角特性偏移原因及其影响规律展开深入研究,并确定力角特性偏移的临界条件。方法首先,建立考虑电枢电阻的PMLSM力角特性的解析模型,分析力角特性产生偏移的原因;其次,基于建立的解析模型,通过峰值推力及其对应的功角研究不同因素对推力特性的影响规律,并建立有限元模型对分析结果进行验证。然后,利用解析法确定PMLSM力角特性产生偏移的临界条件,即当力角偏移系数k(k=X_(t)/R_(a))≥11.43可以近似认为峰值推力对应的功角等于90°,可以忽略力角偏移现象;最后,搭建PMLSM样机测试平台,将有限元结果、实验结果与理论分析进行比较,验证推力特性曲线产生偏移的原因和临界条件。结果研究发现,与常用的忽略电枢电阻的力角特性相比,PMLSM力角特性向左偏移。力角特性偏移现象会导致两方面的影响,一是导致推力和电枢电流的关系不单调,出现小负载的电流比大负载的还要大的现象,二是低频运行时峰值推力减小,因此低频时不能保持恒推力运行。结论研究结果对PMLSM的设计和精确控制具有重要的参考价值。

关键词：永磁直线同步电机力角特性力角特性偏移临界条件

来源：评论

学校读者我要写书评

暂无评论

Browse and Concentrate: Comprehending Multimodal Content via prior-LLM Context Fusion

arXiv

引用

arXiv 2024年

作者： wang, Ziyue Chen, Chi Zhu, Yiqi Luo, fuwen Li, Peng Yan, Ming Zhang, Ji Huang, Fei Sun, Maosong Liu, Yang Dept. of Comp. Sci. & Tech. Institute for AI Tsinghua University Beijing China Tsinghua University Beijing China Institute of Intelligent Computing Alibaba Group China Shanghai Artificial Intelligence Laboratory Shanghai China Jiangsu Collaborative Innovation Center for Language Competence Jiangsu China

With the bloom of Large Language Models (LLMs), Multimodal Large Language Models (MLLMs) that incorporate LLMs with pretrained vision models have recently demonstrated impressive performance across diverse vision-language tasks. However, they fall short to comprehend context involving multiple images. A primary reason for this shortcoming is that the visual features for each images are encoded individually by frozen encoders before feeding into the LLM backbone, lacking awareness of other images and the multimodal instructions. We term this issue as prior-LLM modality isolation and propose a two phase paradigm, browse-and-concentrate1, to enable in-depth multimodal context fusion prior to feeding the features into LLMs. This paradigm initially "browses" through the inputs for essential insights, and then revisits the inputs to "concentrate" on crucial details, guided by these insights, to achieve a more comprehensive understanding of the multimodal inputs. Additionally, we develop training strategies specifically to enhance the understanding of multi-image inputs. Our method markedly boosts the performance on 7 multi-image scenarios, contributing to increments on average accuracy by 2.13% and 7.60% against strong MLLMs baselines with 3B and 11B LLMs, respectively. © 2024, CC BY.

关键词： Image enhancement

来源：评论

学校读者我要写书评

暂无评论

CODIS: Benchmarking Context-Dependent Visual Comprehension for Multimodal Large Language Models

arXiv

引用

arXiv 2024年

作者： Luo, fuwen Chen, Chi Wan, Zihao Kang, Zhaolu Yan, Qidong Li, Yingjie wang, Xiaolong wang, Siyu wang, Ziyue Mi, Xiaoyue Li, Peng Ma, Ning Sun, Maosong Liu, Yang Dept. of Comp. Sci. & Tech. Institute for AI Tsinghua University Beijing China Tsinghua University Beijing China Shanghai Artificial Intelligence Laboratory Shanghai China Jiangsu Collaborative Innovation Center for Language Competence Jiangsu China Key Laboratory of Linguistic and Cultural Computing Ministry of Education Northwest Minzu University China College of Software Jilin University China Institute of Computing Technology Chinese Academy of Sciences China

Multimodal large language models (MLLMs) have demonstrated promising results in a variety of tasks that combine vision and language. As these models become more integral to research and applications, conducting comprehensive evaluations of their capabilities has grown increasingly important. However, most existing benchmarks fail to consider that, in certain situations, images need to be interpreted within a broader context. In this work, we introduce a new benchmark, named as CODIS, designed to assess the ability of models to use context provided in free-form text to enhance visual comprehension. Our findings indicate that MLLMs consistently fall short of human performance on this benchmark. Further analysis confirms that these models struggle to effectively extract and utilize contextual information to improve their understanding of images. This underscores the pressing need to enhance the ability of MLLMs to comprehend visuals in a context-dependent manner. View our project website at https://***/CODIS. © 2024, CC BY.

关键词： Benchmarking

来源：评论

学校读者我要写书评

暂无评论

Research on the Splicing Performance of G.654.E Optical Fiber

Research on the Splicing Performance of G.654.E Optical Fibe...

引用

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Wu, Guangzhe Xia, Xiaomeng Chen, Tong Zhou, Hongyan Hu, Chao Zhang, Liyan Deng, Li wang, Ying Li, Can Ma, Chao Li, Yang Liu, Yang Bai, fuwen Jin, Wei Wu, Jun State Grid Information & Telecommunication Branch Beijing China Yangtze Optical Fibre and Cable Joint Stock Limited Company Key Laboratory of Optical Fibre and Cable Manufacture Technology Optics Valley Laboratory Wuhan China

ISBN: (纸本)9798350312614

Novel G.654.E has been large-scale deployed in optical communication network, so it has become urgent problems to reduce the splicing loss, improve the success probability of in one splicing and unsatisfactory splicing loss from different manufacturers in practical engineering applications. Based on the theory of single-mode fiber splicing loss testing, we obtained a large number of laboratory experiment data and practical network engineering data to verify the splicing performance form the same and different manufacturers of G.654.E fiber in various aspects based on different splicing machines. And also we propose a targeted splicing optimization scheme for practical engineering applications. All of the research provides a guidance for engineering application of G.654.E optical fiber in practical network engineering. © 2023 IEEE.

关键词： G.654.E large effective area splicing ultra-low loss

来源：评论

学校读者我要写书评

暂无评论

Ultra-low loss and large effective area G.654.E fiber in non-relay ultra-long haul optical transmission

Ultra-low loss and large effective area G.654.E fiber in non...

引用

2022 Applied Optics and Photonics China: Optical Information and Networks, AOPC 2022

作者： Wu, Guangzhe Li, Bozhong Liu, Jun Wei, Yong Qu, Yanwen wang, Ruichun Deng, Li wang, Ying Zhang, Xiaowei Yuan, Lijuan Liu, Ying Zhou, Xinyan Fan, Hongjun Lu, He Bai, fuwen wang, Qian Jin, Wei Ma, Chao Zhu, Jihong Zhou, Hongyan Hu, Chao Wu, Jun State Grid Information & Telecommunication Branch Beijing100761 China Information and Telecommunication Company State Grid Hebei Electric Power Company Shijiazhuang050000 China Southwest Electric Power Design Institute Co. Ltd. China Energy Engineering Group Chengdu610056 China State Key Laboratory of Optical Fibre and Cable Manufacture Technology Yangtze Optical Fibre and Cable Joint Stock Limited Company Wuhan430073 China Jiangsu Tongguang Optical Fiber Cable Limited Company Haimen226100 China

ISBN: (纸本)9781510662384

In this paper, the properties of ultra-low loss and large effective area G.654.E fiber were studied, including the optical properties and cabling performance. Based on the tests of the transmission performances of different optical fibers in non-relay ultra-long haul optical transmission system, practical suggestions for optical fiber selection of electric communication construction were proposed. G.654.E fiber was utilized in practical engineering, verifying the theoretical research and identifying optimal direction and methods. 467 km non-relay ultra-long haul optical transmission was realized, creating a new record in electric communication network. © 2023 SPIE.

关键词： Optical fibers

来源：评论

学校读者我要写书评

暂无评论

Integrative study to determine the anti-tumor role and mechanism of Chouchunpi San in colorectal cancer

引用

Pharmacological Research - Modern Chinese Medicine 2024年 13卷

作者： Shi, Nuolin Li, Mingjie Li, Xuehui Hou, Xinxin wang, Mingzhu Ni, Zhongya Lin, Shan Hu, Liang Yuan, fuwen School of Integrative Medicine Shanghai University of Traditional Chinese Medicine Cailun Rd #1200 Shanghai 201203 China Shanghai TCM-Integrated Hospital Shanghai University of Traditional Chinese Medicine Jingan Zhijiang Middle Rd #274 Shanghai 200082 China Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Shanghai University of Traditional Chinese Medicine Shanghai 200437 China Jsinnopharm Shanghai 201203 China

Introduction: The herbal formula Chouchunpi San (CCPS) is a traditional formula that has been widely used and proven effective in various clinical cancer treatments. However, the mechanism of its anticancer effect remains unclear. This study aims to determine the anti-tumor effect of CCPS on colorectal cancer (CRC) in vivo and in vitro and to explore the underlying molecular mechanisms. Methods: Cell counting kit-8 assays, colony-forming assays, and flow cytometry for cell cycle and apoptosis assays were employed to determine the anti-tumor roles of CCPS. Liquid chromatography-mass spectrometry (LC-MS), network pharmacology, molecular docking, analysis of real-world clinical datasets of CRC, and western blotting were conducted to explore the molecular mechanism of CCPS on CRC. CRC xenografted mouse model, western blotting, and public CRC data analysis were conducted to evaluate the anti-tumor efficacy and mechanisms of CCPS on CRC. Results: CCPS suppresses the growth of CRC cells and increases the number of apoptotic cells dose-dependently. CCPS targets and significantly downregulates RPA1 and enhances the phosphorylation of its downstream effectors, ATR and CHK1, which are critical for CRC progression. Additionally, CCPS shows a comparable anti-tumor effect in CRC xenografted mouse models compared to Capecitabine, a chemotherapy drug commonly used in clinics. Discussion: Our findings demonstrate the potential use of CCPS in cancer treatment by suppressing cancer cell growth and modulating the RPA1/ATR/CHK1 signaling pathway in CRC. Further investigations on the application of CCPS in cancer therapies could be extended to evaluate the potential in vivo toxicity and adverse events, as well as the synergistic effect of CCPS in combination with other chemotherapeutic agents. © 2024 The Author(s)

关键词： Ailanthone ATR/CHK1 signaling Chouchunpi San Colorectal cancer RPA1

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：