期刊文献+
共找到233,236篇文章
< 1 2 250 >
每页显示 20 50 100
结合Diffusion-Based WGANGP的变压器油纸绝缘老化状态拉曼光谱检测方法 被引量:1
1
作者 陈新岗 敖怡 +5 位作者 张知先 马志鹏 张文轩 万福 况露 罗博文 《光谱学与光谱分析》 北大核心 2025年第8期2164-2173,共10页
提出了一种结合拉曼光谱与扩散模型改进的Wasserstein生成对抗网络(WGANGP)方法,用于提高变压器油纸绝缘老化状态的检测精度。凭借拉曼光谱技术无接触、不损耗的优势,可通过其分析油浸式电力变压器内部油纸绝缘材料的老化产物来评估变... 提出了一种结合拉曼光谱与扩散模型改进的Wasserstein生成对抗网络(WGANGP)方法,用于提高变压器油纸绝缘老化状态的检测精度。凭借拉曼光谱技术无接触、不损耗的优势,可通过其分析油浸式电力变压器内部油纸绝缘材料的老化产物来评估变压器的老化程度。结合深度学习分类模型简化了拉曼光谱数据预处理过程,但此类模型对训练数据的数量和质量有较高要求,由于热加速老化实验周期长,导致可用于训练的有效拉曼光谱数据集相对稀少,限制了分类模型性能。为了解决这一难题,本研究引入了一种新的数据增强方法,即基于扩散模型的WGANGP(Diffusion-Based WGANGP),该方法通过将去噪扩散概率模型的前向加噪过程与WGANGP相结合,向WGANGP中引入实例化的噪声,去除了传统WGANGP的生成器结构中的复杂向上采样过程,简化了数据增强模型结构,有利于模型参数优化。相比于传统GAN及其变体,这种方法不仅保持了变压器油纸绝缘老化样本拉曼光谱数据集的原始特征峰特征与老化程度相关的基线漂移趋势,且与原始数据集特征保持近似的空间分布,生成的数据集信噪比(SNR)为24.84 dB,相比于原始数据集提高了32.11%;同时,也提升了生成样本的多样性,提高了基于深度学习的老化诊断模型的泛化能力、定量分析能力和鲁棒性。实验结果表明,采用Diffusion-Based WGANGP数据增强模型所生成的拉曼光谱数据集,在多个分类模型上的表现均优于其他数据增强方法,特别是在与ResNet-SVM分类模型结合时,在Accuracy(准确性,0.9974)、F1 score(F1分数,0.9969)、Recall(召回率,0.9960)和Precision(精确度,0.9980)四个评价指标上均表现出优势,这表明改进后的数据增强模型能够有效解决变压器老化绝缘油样本稀缺的问题,同时提高了分类模型对变压器老化状态的定量诊断能力。 展开更多
关键词 变压器 油纸绝缘 拉曼光谱 Diffusion-based WGANGP 故障诊断
在线阅读 下载PDF
孟德尔随机化MR-Base数据库的应用 被引量:1
2
作者 蒿花 陈新欢 +3 位作者 姜红 耿辉 马茂 米白冰 《中国循证心血管医学杂志》 2025年第3期270-273,共4页
越来越多的流行病学证据表明,生活方式、饮食习惯等环境因素与多种健康状况之间存在复杂的因果关系。然而,传统的观察性研究易受到混杂因素的影响,无法准确揭示疾病与环境间的因果关系。孟德尔随机化研究(Mendelian Randomization,MR)... 越来越多的流行病学证据表明,生活方式、饮食习惯等环境因素与多种健康状况之间存在复杂的因果关系。然而,传统的观察性研究易受到混杂因素的影响,无法准确揭示疾病与环境间的因果关系。孟德尔随机化研究(Mendelian Randomization,MR)通过遗传变异的随机分配可有效减少混杂因素偏倚,从而更可靠地估计因果效应。MR-Base数据库作为全球最大的孟德尔随机化研究平台,汇集了来自世界各地的遗传数据,为研究者提供了探索遗传变异与健康结局之间因果关系的宝贵资源。本文探讨孟德尔随机化在MR-Base数据库中的应用,旨在介绍该方法的基本原理、数据库的结构与功能,以及如何利用这些数据来探索环境因素与包括心血管疾病、代谢性疾病和精神健康研究等在内的健康结局潜在关联。同时,本文展望了孟德尔随机化方法的未来发展方向,强调了其在精准医疗和公共卫生政策中的潜在作用。 展开更多
关键词 MR-base数据库 孟德尔随机化 遗传变异 工具变量
暂未订购
含Tröger’s base结构聚(苯并噁唑-酰亚胺)热重排分离膜的制备与其气体分离特性研究
3
作者 宋映晓 唐傲 +3 位作者 张家霖 董杰 赵昕 张清华 《高分子学报》 北大核心 2025年第8期1358-1368,共11页
设计合成了一种新型含Tröger’s base(TB)结构的二胺单体—2,8-二氨基-4,10-二甲基-6,12-氢-5,11-亚甲二苯并[1,5]二氮辛(TBDA),并将其与2,2′-双(3,4-二羧酸)六氟丙烷二酐(6FDA)和2,2-双(3-氨基-4-羟基苯基)六氟丙烷(APAF)共聚反... 设计合成了一种新型含Tröger’s base(TB)结构的二胺单体—2,8-二氨基-4,10-二甲基-6,12-氢-5,11-亚甲二苯并[1,5]二氮辛(TBDA),并将其与2,2′-双(3,4-二羧酸)六氟丙烷二酐(6FDA)和2,2-双(3-氨基-4-羟基苯基)六氟丙烷(APAF)共聚反应,合成了一系列含邻羟基酰亚胺单元的聚酰亚胺(HPI).在高温下对HPI膜进行热重排处理,获得了兼具TB自聚微孔结构和热重排结构的聚(苯并噁唑-酰亚胺)气体分离膜.研究结果显示,TB自具微孔结构和热重排结构的协同作用抑制了分子链的规整堆砌,使分离膜自由体积增加,从而赋予其优异的气体分离特性.经430℃热重排反应的6FTB1-TR430膜表现出最优异的综合气体分离性能,对CO_(2)、CH_(4)、O_(2)和N_(2)的渗透系数分别为267.6、7.0、57.2和12.5 Barrer(1 Barrer=7.5×10^(−14) cm^(3)(STP)/(cm^(2)·s·Pa),STP表示标准状态,即0℃,1.01×10^(5)Pa),同时,选择性分别达到α(CO_(2)/CH_(4))=38.2及α(O_(2)/N_(2))=4.6.此外,该类分离膜的热分解温度为530~560℃,玻璃化转变温度(Tg)超过400℃,显示出优异的热稳定性.该研究为设计和开发聚酰亚胺类高效气体分离膜提供了新的思路. 展开更多
关键词 Tröger’s base结构 热重排反应 协同作用 气体分离膜
原文传递
Impact of Information and Communication Technologies Based Initiatives: An Attitudinal Change in Students and Teachers
4
作者 Surya Narayan Gupta Manohar Sah Akhilesh Chaube 《Applied Mathematics》 2025年第2期190-199,共10页
There is curiosity and awareness throughout the world regarding the role of Information and Communication technologies. This is felt in each and every section of society. Several studies have confirmed and considered ... There is curiosity and awareness throughout the world regarding the role of Information and Communication technologies. This is felt in each and every section of society. Several studies have confirmed and considered information and communication technology’s significance in the field of education. It has not only affected learners but also to the teachers. This paper explores how ICT-based projects affect teachers’ and students’ attitudes. The data was collected through self-prepared attitude scale. It was distributed among the teachers and students of various schools. Two hundred students and one hundred twenty teachers responded to the questionnaire. Analysis was done through the data collected from the teachers as well as from students. The study’s conclusions demonstrated that while there was no significant variation in the attitudes of teachers utilizing different ICT-based programs, there was a substantial difference in the students’ attitude toward learning with different ICT-based programs. 展开更多
关键词 ICT based Initiatives ICT Teacher’s Attitude Student’s Attitude
在线阅读 下载PDF
Web-Based Platform and Remote Sensing Technology for Monitoring Mangrove Ecosystem
5
作者 Evelyn Anthony Rodriguez John Edgar Sualog Anthony +2 位作者 Randy Anthony Quitain Wilma Cledera Delos Santos Ernesto Jr. Benda Rodriguez 《Open Journal of Ecology》 2025年第1期1-10,共10页
Remote sensing and web-based platforms have emerged as vital tools in the effective monitoring of mangrove ecosystems, which are crucial for coastal protection, biodiversity, and carbon sequestration. Utilizing satell... Remote sensing and web-based platforms have emerged as vital tools in the effective monitoring of mangrove ecosystems, which are crucial for coastal protection, biodiversity, and carbon sequestration. Utilizing satellite imagery and aerial data, remote sensing allows researchers to assess the health and extent of mangrove forests over large areas and time periods, providing insights into changes due to environmental stressors like climate change, urbanization, and deforestation. Coupled with web-based platforms, this technology facilitates real-time data sharing and collaborative research efforts among scientists, policymakers, and conservationists. Thus, there is a need to grow this research interest among experts working in this kind of ecosystem. The aim of this paper is to provide a comprehensive literature review on the effective role of remote sensing and web-based platform in monitoring mangrove ecosystem. The research paper utilized the thematic approach to extract specific information to use in the discussion which helped realize the efficiency of digital monitoring for the environment. Web-based platforms and remote sensing represent a powerful tool for environmental monitoring, particularly in the context of forest ecosystems. They facilitate the accessibility of vital data, promote collaboration among stakeholders, support evidence-based policymaking, and engage communities in conservation efforts. As experts confront the urgent challenges posed by climate change and environmental degradation, leveraging technology through web-based platforms is essential for fostering a sustainable future for the forests of the world. 展开更多
关键词 Mangrove Ecosystems MONITORING Remote Sensing Web-based Platform
在线阅读 下载PDF
Using Agent-Based Modeling to Study the Adaptation and Evolution of Human Emotions and Cognition
6
作者 Duan Qin Luo Siyang 《心理科学》 北大核心 2025年第6期1314-1332,共19页
This review explores the use of agent-based modeling(ABM)within the framework of study human emotion and cognition in the context of its ability to simulate complex social interactions,adaptive changes,and evolutionar... This review explores the use of agent-based modeling(ABM)within the framework of study human emotion and cognition in the context of its ability to simulate complex social interactions,adaptive changes,and evolutionary processes.By representing agents and their defined environments with probabilistic interactions,ABM allows the assessment of the effects of individual behavior at the micro level on the greater social phenomena at the macro level.The review looks into the applications of ABM in portraying some of the key components of emotions and cognition-empathy,cooperation,decision making,and emotional transmission-and analyzes the problems including scalability,empirical validation,and description of sensitive emotional states.The most important conclusion is that merging ABM with information neurobiological data and artificial intelligence(AI)techniques would allow for deepening the interactions within the system and enhancing its responsiveness to stimuli.This review highlights approaches that aim to exploit the ABM methodology more fully and integrates methods from biology,neuroscience,and engineering.This integration could contribute to our understanding of the human behavior evolution and adaptation within systems relevant to policymaking,healthcare,and education. 展开更多
关键词 agent-based modeling emotions evolution cognition evolution social interactions
原文传递
Application of Best Evidence-Based in Neonatal Medical Adhesive-Related Skin Injuries
7
作者 Zhongxia Li Jing Tan +4 位作者 Xiaoyan Yang Hui Zhou Xia Xu Dingxi Zhu Jin Luo 《Journal of Biosciences and Medicines》 2025年第2期320-329,共10页
Objective: In the Healthy Child Action Enhancement Program (2021-2025), it is proposed to ensure the safety and health of newborns and to promote high-quality development of health. Our department established risk ass... Objective: In the Healthy Child Action Enhancement Program (2021-2025), it is proposed to ensure the safety and health of newborns and to promote high-quality development of health. Our department established risk assessment criteria for medical adhesives in neonates by applying the best evidence in the management program for the reduction of medical adhesive-associated skin injuries in neonates, in terms of the use and removal of adhesives. Methods: A systematic search and quality assessment of topics related to medical adhesive-related skin injury in neonates was conducted to summarize the best evidence and to conduct a quality review in the neonatal unit. Results: After 2 rounds of review, medical and nursing staff in the neonatal unit had a 98% compliance rate for the knowledge of neonatal medical adhesive-related skin injury and a satisfactory compliance rate for the other 9 indicators;after the application of the evidence, the incidence of neonatal medical adhesive-related skin injury was significantly lower than that before the application of the evidence, and the differences were statistically significant (P Conclusion: The application of the best evidence-based management program in neonatal medical adhesive-associated skin injury can reduce the incidence of neonatal medical adhesive-associated skin injury, reduce neonatal infections, and improve the integrity of the protective skin barrier in neonates. 展开更多
关键词 EVIDENCE-baseD Nursing Management NEONATES Medical Adhesive-Related Skin Injury SATISFACTION
暂未订购
Effect of Hf and Ta on creep deformation behaviors of PM Ni-based superalloys
8
作者 Hao-peng ZHANG Jia-ming BAI +4 位作者 Xin-yu LI Xiao-kun LI Jian JIA Jian-tao LIU Yi-wen ZHANG 《Transactions of Nonferrous Metals Society of China》 2025年第3期849-862,共14页
Four powder metallurgy(PM)Ni-based superalloys with different Hf and Ta contents were creep-tested at 650℃ and 970 MPa,700℃ and 770 MPa,and 750℃ and 580 MPa,respectively.The effect of Hf and Ta on creep deformation... Four powder metallurgy(PM)Ni-based superalloys with different Hf and Ta contents were creep-tested at 650℃ and 970 MPa,700℃ and 770 MPa,and 750℃ and 580 MPa,respectively.The effect of Hf and Ta on creep deformation behaviors of the superalloys was studied from multiple scales by SEM,electron backscatter diffraction(EBSD),and aberration-corrected scanning transmission electron microscope(AC-STEM).The results showed that Hf and Ta suppressed the intergranular fracture and initiation of cracks during the acceleration creep stage,which prolonged the creep rupture time.Hf and Ta inhibited the stacking faults extending and the dislocation climbing and promoted the Suzuki segregation of W during the steady-state creep stage,which reduced the minimum creep rate and delayed the start time of the acceleration creep stage.The Suzuki segregation of Co,Cr,Mo,Ti,Nb,W,and Ta along stacking faults was observed after Hf and Ta addition,leading to the localized phase transformation in the γ′phase,and the stacking fault phase was chemically disordered.This study provided ideas for the composition design of novel PM Ni-based superalloys and theoretical foundations for the combined addition of Hf and Ta. 展开更多
关键词 PM Ni-based superalloy HF TA creep deformation behaviors Suzuki segregation
在线阅读 下载PDF
人类白细胞抗原新等位基因DQB1*06:436和DQB1*02:108的序列分析和确认
9
作者 王满妮 王小芳 +5 位作者 王天菊 尚利侠 陈乐 李昱辉 张嫄 齐珺 《中国组织工程研究》 北大核心 2026年第7期1782-1789,共8页
背景:人类白细胞抗原(human leukocyte antigen,HLA)系统具有高度遗传多态性,在抗原呈递、免疫识别中发挥重要作用,主要应用于造血干细胞移植和器官移植供受者选择、群体遗传学、输血医学等领域。目的:对新等位基因HLA-DQB1*06:436和HLA... 背景:人类白细胞抗原(human leukocyte antigen,HLA)系统具有高度遗传多态性,在抗原呈递、免疫识别中发挥重要作用,主要应用于造血干细胞移植和器官移植供受者选择、群体遗传学、输血医学等领域。目的:对新等位基因HLA-DQB1*06:436和HLA-DQB1*02:108进行确认并分析核苷酸序列。方法:应用DNA测序分型技术对2019年中国造血干细胞捐献者进行入库HLA检测,发现2个样本DQB1位点无完全匹配的等位基因,采用二代测序方法对2个样本的DQB1位点进行序列确认,分析核苷酸差异。结果与结论:样本1 DQB1位点与其同源性最高的HLA-DQB1*06:79:01相比,在第2外显子205位碱基由T替换为G,导致第37位氨基酸由酪氨酸(Tyr)变为天冬氨酸(Asp)。样本2 DQB1位点与其同源性最高的HLA-DQB1*02:01:01:01相比,第3外显子485位碱基发生了G>A突变,第130位氨基酸由精氨酸(Arg)变为谷氨酰胺(Gln)。实验验证2个等位基因均为HLA-DQB1新等位基因,分别被世界卫生组织HLA因子命名委员会命名为HLA-DQ B1*06:436和HLA-DQB1*02:108。 展开更多
关键词 人类白细胞抗原 基因分型 新等位基因 碱基突变 SBT NGS DQB1
暂未订购
Evidence-Based Practice of Nutrition Management in Chronic Heart Failure Patients Based on Knowledge-to-Action Transformation Model
10
作者 Jing Zhang Junjun Liu 《Open Journal of Applied Sciences》 2025年第2期400-410,共11页
Objective: To develop a best-evidence-based optimal nutrition management plan for patients with chronic heart failure, apply it in clinical practice, and evaluate its effectiveness. Methods: Use the KTA knowledge tran... Objective: To develop a best-evidence-based optimal nutrition management plan for patients with chronic heart failure, apply it in clinical practice, and evaluate its effectiveness. Methods: Use the KTA knowledge translation model to guide evidence-based practice in nutrition management, and compare the nutritional status, cardiac function status, quality of life, and quality review indicators of chronic heart failure patients before and after the application of evidence. Results: After the application of evidence, the nutritional status indicators (MNA-SF score, albumin, hemoglobin) of two groups of heart failure patients significantly increased compared to before the application of evidence, with statistically significant differences (p Conclusion: The KTA knowledge translation model provides methodological guidance for the implementation of evidence-based practice for heart failure patients. This evidence-based practice project is beneficial for improving the outcomes of malnutrition in chronic heart failure patients and is conducive to standardizing nursing pathways, thereby promoting the improvement of nursing quality. 展开更多
关键词 Chronic Heart Failure Knowledge Transformation Mode Nutrition Management Evidence-based Practice
在线阅读 下载PDF
基于Agent-Based模型和群智能算法的供电信息通信监控中心威胁感知方法
11
作者 陶程栋 梅峰 王强强 《计算技术与自动化》 2025年第2期60-65,共6页
针对采样结果泛化程度较差导致感知粒子覆盖率较低、监控中心威胁样本召回率较低的问题,设计了基于Agent-Based模型和群智能算法的供电信息通信监控中心威胁感知方法。首先,对供电信息通信监控中心数据进行采样和分析,并对采样结果进行... 针对采样结果泛化程度较差导致感知粒子覆盖率较低、监控中心威胁样本召回率较低的问题,设计了基于Agent-Based模型和群智能算法的供电信息通信监控中心威胁感知方法。首先,对供电信息通信监控中心数据进行采样和分析,并对采样结果进行泛化处理和归约计算;然后,基于Agent-Based模型构建供电信息通信监控中心威胁本体溯源函数,并计算Agent的感知能力;最后,采用群智能算法对构建威胁本体溯源函数的感知结果进行优化处理,实现对供电信息通信监控中心威胁的精确感知;最终完成供电信息通信监控中心威胁感知方法设计。实验结果表明,该方法在实际应用中,召回率更高,感知效果更好。 展开更多
关键词 Agent-based模型 群智能算法 供电信息 通信监控中心 感知方法 方法设计
在线阅读 下载PDF
Establishing and Sustaining Academic and Local Health Collaborations: A Case Study of Practice-Based Teaching and Workforce Development
12
作者 Marissa Varrasso Stacey Cunnington +6 位作者 Eva Nelson Alyson Codner Meredith Hurley Ami Mitchell Amanda Flanagan Donna McGrath Jacey Greece 《Health》 2025年第1期23-48,共26页
The pandemic highlighted significant gaps in the public health infrastructure impacted by shortages of public health workers, an undertrained workforce, and years of disinvestment. These gaps required innovative probl... The pandemic highlighted significant gaps in the public health infrastructure impacted by shortages of public health workers, an undertrained workforce, and years of disinvestment. These gaps required innovative problem-solving by public health agencies (PHAs), including local health departments (LHDs), to respond to rapidly changing community conditions during and after the pandemic. Many schools and programs of public health (SPPH) worked with PHAs to mobilize public health (PH) students through practice-based teaching (PBT). Current research indicates PBT benefits all stakeholders—PHAs, students, faculty, SPPH, and ultimately the community served. However, more research is needed on the utility of PBT in addressing a community’s systemic public health issues, the extent to which the academic-community collaboration enhances a PHA’s capacity, and the impact of the pedagogy on preparing the workforce for an evolving PH landscape. This paper examines the process of a semester-long PBT course, guided by the PBT STEPS framework, which includes five steps from collaboration to implementation to evaluation of a PBT course. The collaborating PHA and its student group addressed community trauma and resilience issues during the semester. Additionally, it examines the longer-term impacts after the semester for the PHA, community, and the workforce by 1) conducting a formative evaluation to understand needs and gaps in the community;2) redesigning an intervention that merged the results of the formative evaluation with the intervention developed during the semester;and 3) securing funding and resources for intervention sustainability. Through the documentation of a post-course partnership between an LHD and faculty at a large school of public health, this case study illustrates the potential for PBT to lay the foundation for ongoing research that supports more impactful interventions for PHAs while bolstering the workforce abilities of students as future practitioners. 展开更多
关键词 Academic and Community Collaborations Practice-based Teaching Public Health Training Workforce Development Curriculum Design Community Trauma COVID-19
在线阅读 下载PDF
A Dynamic Knowledge Base Updating Mechanism-Based Retrieval-Augmented Generation Framework for Intelligent Question-and-Answer Systems
13
作者 Yu Li 《Journal of Computer and Communications》 2025年第1期41-58,共18页
In the context of power generation companies, vast amounts of specialized data and expert knowledge have been accumulated. However, challenges such as data silos and fragmented knowledge hinder the effective utilizati... In the context of power generation companies, vast amounts of specialized data and expert knowledge have been accumulated. However, challenges such as data silos and fragmented knowledge hinder the effective utilization of this information. This study proposes a novel framework for intelligent Question-and-Answer (Q&A) systems based on Retrieval-Augmented Generation (RAG) to address these issues. The system efficiently acquires domain-specific knowledge by leveraging external databases, including Relational Databases (RDBs) and graph databases, without additional fine-tuning for Large Language Models (LLMs). Crucially, the framework integrates a Dynamic Knowledge Base Updating Mechanism (DKBUM) and a Weighted Context-Aware Similarity (WCAS) method to enhance retrieval accuracy and mitigate inherent limitations of LLMs, such as hallucinations and lack of specialization. Additionally, the proposed DKBUM dynamically adjusts knowledge weights within the database, ensuring that the most recent and relevant information is utilized, while WCAS refines the alignment between queries and knowledge items by enhanced context understanding. Experimental validation demonstrates that the system can generate timely, accurate, and context-sensitive responses, making it a robust solution for managing complex business logic in specialized industries. 展开更多
关键词 Retrieval-Augmented Generation Question-and-Answer Large Language Models Dynamic Knowledge base Updating Mechanism Weighted Context-Aware Similarity
在线阅读 下载PDF
硫自养反硝化技术工程应用现状及展望
14
作者 陈男 陈方鑫 +8 位作者 彭彤 李冶平 孙大鑫 原源 刘程田 梅朵朵 詹永恒 汪小童 冯传平 《地学前缘》 北大核心 2026年第1期163-178,共16页
微生物反硝化是硝酸盐去除的重要方法。然而,传统的异养反硝化技术依赖外部有机碳源的添加,存在处理成本高、污泥产量大及碳排放强度高等问题。在“双碳”背景之下,寻找经济且环境友好的生物处理技术,成为低碳处理硝酸盐废水的核心问题... 微生物反硝化是硝酸盐去除的重要方法。然而,传统的异养反硝化技术依赖外部有机碳源的添加,存在处理成本高、污泥产量大及碳排放强度高等问题。在“双碳”背景之下,寻找经济且环境友好的生物处理技术,成为低碳处理硝酸盐废水的核心问题。硫自养反硝化技术使用还原态硫代替有机碳源作为电子供体驱动生物反硝化过程。与传统异养过程相比,大幅降低碳排放强度和外源碳需求。本文基于硫自养反硝化技术原理与工程应用现状,系统比较了复合型硫基材料和高硫型材料的脱氮性能,讨论了实际应用中硫自养滤料的功能特性。并基于各类反应器在结构配置、物料特性、接触方式、微生物群落富集机制等方面差异,阐释了不同类型反应器在实际应用中的性能特征。在厘清反应体系运行特性的基础上,本文综述了自养反硝化技术在市政、工业、生态等脱氮领域工程规模的应用,探讨了硫自养反硝化技术在市政污水、高盐废水及人工湿地等多场景高效脱氮应用现状,量化了硫自养技术的运行成本及环境效益。最后,展望了未来硫自养反硝化的研究方向,通过材料开发、基因工程靶向调控推动工艺标准化以突破工程化瓶颈,最终构建低碳高效的硫自养脱氮技术体系,以期为硫自养反硝化技术的工程化应用提供重要参考。 展开更多
关键词 微生物代谢 反应器构建 硫基复合材料 低碳脱氮 工程应用
在线阅读 下载PDF
“四水四定”和谐共生的理论体系及应用途径
15
作者 左其亭 李佳敏 +1 位作者 陶洁 吴青松 《郑州大学学报(工学版)》 北大核心 2026年第1期1-10,共10页
“四水四定”和谐共生作为一种新兴的水资源管理理念,强调在水资源刚性约束下,深入贯彻“四水四定”原则和“和谐共生”理念。系统分析了“四水四定”和谐共生的提出背景,在明晰“四水四定”原则与“和谐共生”理念的基础上,界定了“四... “四水四定”和谐共生作为一种新兴的水资源管理理念,强调在水资源刚性约束下,深入贯彻“四水四定”原则和“和谐共生”理念。系统分析了“四水四定”和谐共生的提出背景,在明晰“四水四定”原则与“和谐共生”理念的基础上,界定了“四水四定”和谐共生的概念,从人文系统、水系统交互作用的视角解析了其深层内涵。以区域水平衡原理、人与自然共生共荣原理和人水关系和谐演变原理为基本原理,以系统识别、模拟分析、度量评估和优化调控为主要方法,从协调发展、动态调控、系统协同、供需平衡及适水发展5个方面介绍其主要理念,构建了“四水四定”和谐共生的理论体系框架并系统阐述其理论基础的核心内容,进一步从规划、政策、管理、战略、技术和学科等多层面探讨了“四水四定”和谐共生的应用途径与前景。该研究为水资源精细化管理与多系统协同发展提供理论依据与实践参考。 展开更多
关键词 “四水四定” 和谐共生 人水关系学 和谐论 水资源管理
在线阅读 下载PDF
Evaluating the Potential Impact of Oat-Based Skincare on Celiac Disease Patients with Compromised Skin Integrity
16
作者 Kelly Frasier Nicole Werpachowski +3 位作者 Milena Dragovic Alyssa Forsyth Alicia Podwojniak Brittani Remé 《Journal of Biosciences and Medicines》 2025年第2期129-147,共19页
Oats, frequently incorporated into skincare formulations for their anti-inflammatory, moisturizing, and barrier-repairing properties, may present an overlooked risk to individuals with celiac disease, particularly whe... Oats, frequently incorporated into skincare formulations for their anti-inflammatory, moisturizing, and barrier-repairing properties, may present an overlooked risk to individuals with celiac disease, particularly when applied to compromised skin. Although pure oats are inherently gluten-free, the widespread contamination with gluten-containing grains like wheat, barley, or rye during agricultural and processing stages introduces the potential for gluten exposure through topical application. This raises important questions about whether gluten proteins, when applied to damaged skin, might penetrate the epidermal barrier and contribute to immune responses in genetically predisposed celiac patients, given that even minute amounts of gluten can trigger systemic symptoms. Emerging evidence suggests that transdermal absorption of gluten peptides through impaired skin integrity might bypass the gastrointestinal route, yet the precise mechanisms and clinical significance of this pathway remain poorly understood. The role of compromised skin in facilitating gluten absorption and the possible activation of CD4+ T-cells, mimicking gastrointestinal pathways, warrants further investigation. Additionally, the ability of gluten peptides to reach deeper dermal layers and potentially enter the systemic circulation remains speculative, though theoretically possible in severely disrupted skin barriers. Without clinical and molecular studies to determine the risk of topical gluten exposure, particularly in celiac patients with skin injuries, there remains a potential for undetected immune activation and subsequent adverse health outcomes in this sensitive population. 展开更多
关键词 Oat-based Skincare Anti-Inflammatory Skin Barrier Celiac Disease Gluten Contamination Compromised Skin Transdermal Absorption Gluten Peptides Immune Activation Gluten-Free Formulations Topical Exposure Risks
暂未订购
基于智能APP的路径化护理模式在肺癌手术患者加速康复中的应用效果
17
作者 范光伟 田洁 +5 位作者 李娜 刘青春 张伟 李华 闫君 王蓉 《临床医学研究与实践》 2026年第1期151-154,189,共5页
目的探讨基于智能APP的路径化护理模式在肺癌手术患者加速康复中的应用效果。方法选取2022年1月至2023年6月胸外科加速康复外科(ERAS)病房行胸腔镜下肺癌根治手术的295例患者,将2022年1月至9月的145例患者纳入对照组(实施传统护理模式);... 目的探讨基于智能APP的路径化护理模式在肺癌手术患者加速康复中的应用效果。方法选取2022年1月至2023年6月胸外科加速康复外科(ERAS)病房行胸腔镜下肺癌根治手术的295例患者,将2022年1月至9月的145例患者纳入对照组(实施传统护理模式);2022年10月至2023年6月的150例患者纳入观察组(采取基于智能APP的路径化护理模式)。比较两组的康复指标、并发症发生情况、焦虑和抑郁情况、护理满意度、健康知识知晓情况。结果观察组的康复指标、并发症总发生率、护理满意度优于对照组(P<0.05)。观察组干预后的焦虑及抑郁评分均低于对照组(P<0.05)。观察组干预后的健康知识知晓评分高于对照组(P<0.001)。结论基于智能APP的路径化护理模式有利于降低肺癌手术患者的并发症发生率,改善心理状况,提升对护士工作的满意度,从而促进加速康复,值得在临床推广。 展开更多
关键词 智能APP 路径化护理 肺癌根治术 加速康复外科
暂未订购
谁更像“人”?模型类型与人格设定对大语言模型复刻传播学实验准确率的影响
18
作者 曾秀芹 陈珂璐 《新闻与传播评论》 北大核心 2026年第1期25-39,共15页
以ChatGPT-4o、DeepSeek-R1、豆包-1.5、Kimi-K1.5四种主流大语言模型为对象,采用2(有vs.无大五人格设定)×4(模型类型)实验设计,构建虚拟被试资料以复刻新闻传播学实验。结果显示,各模型拟合表现存在差异:DeepSeek-R1在模拟真人平... 以ChatGPT-4o、DeepSeek-R1、豆包-1.5、Kimi-K1.5四种主流大语言模型为对象,采用2(有vs.无大五人格设定)×4(模型类型)实验设计,构建虚拟被试资料以复刻新闻传播学实验。结果显示,各模型拟合表现存在差异:DeepSeek-R1在模拟真人平均趋势与行为变异性方面最优;ChatGPT-4o的总体方差拟合偏差较大,但主效应、间接效应复刻的准确性与稳定性较为突出。人格设定的影响方面,无大五人格组描述性统计更贴近真人,而有大五人格组因果效应复刻更稳定,唯一完整复刻两个主效应的模型即来自该组。中介效应复刻成功率偏低,但人格设定可在一定程度上缓解模型输出的方向与效应偏离趋势。此外,研究基于ChatGPT-4o进一步发现,实验对象类型(真人组vs.无大五人格组vs.有部分大五人格组vs.有全部大五人格组)对主效应与中介机制部分产生显著调节作用,其中大五人格设定可一定程度抑制模型极端响应。研究实现多模型横向比较与人格设定控制下的复刻实验,验证了大五人格设定对提升模型模拟精度的积极作用,同时指出模型复刻复杂心理机制的局限性,推动传播学实验向“人机共演”的新范式转变,也拓展“媒介即延伸”在智能传播语境下的现实外延。 展开更多
关键词 大语言模型 大五人格 复刻研究 硅基被试
在线阅读 下载PDF
基于OBE理念的《数据库概论》项目驱动教学改革与建设研究
19
作者 张志军 刘君 王学伟 《办公自动化》 2026年第1期22-24,共3页
随着新工科教育改革的深入推进,传统的以知识传授为中心的教学模式已难以满足现代工程技术人才培养的需求。文章以成果导向教育(Outcome-Based Education,OBE)理念为指导,针对《数据库概论》课程教学中存在的理论与实践脱节、教学方法... 随着新工科教育改革的深入推进,传统的以知识传授为中心的教学模式已难以满足现代工程技术人才培养的需求。文章以成果导向教育(Outcome-Based Education,OBE)理念为指导,针对《数据库概论》课程教学中存在的理论与实践脱节、教学方法单一等问题,构建基于项目驱动的多维教学模式。通过确立明确的学习成果目标,创新教学内容设计,建立形成性与终结性相结合的评价机制,有效提升学生的实践能力和创新思维。实践结果表明,该教学模式使学生满意度从68%提升至92%,平均成绩提高约15分,就业率由85%增至95%,为新工科背景下计算机专业基础课程的教学改革提供有效路径。 展开更多
关键词 成果导向教育 数据库概论 项目驱动 教学改革
在线阅读 下载PDF
电动车辆动力电池回收与梯次利用研究
20
作者 张雯雯 刘彦钊 《汽车电器》 2026年第1期74-76,共3页
随着新能源车辆的快速增长,动力电池将在未来数年内迎来规模化退役。退役电池中仍保留相当容量的可用电量,将其应用于梯次利用环节,既能延长电池生命周期,又能降低储能系统建设成本。基于此,本文重点分析全链条溯源机制建设与自动化拆... 随着新能源车辆的快速增长,动力电池将在未来数年内迎来规模化退役。退役电池中仍保留相当容量的可用电量,将其应用于梯次利用环节,既能延长电池生命周期,又能降低储能系统建设成本。基于此,本文重点分析全链条溯源机制建设与自动化拆解工艺优化的可行性,深入探索梯次电池在规模化储能等高端场景的应用方案,旨在为建立环境友好、经济可持续的动力电池全生命周期管理模式提供参考。 展开更多
关键词 动力电池回收 梯次利用 资源再生 场景化应用
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部