Theoretical and Natural Science最新文献_第6页

Study on the stability and targeting of AuNPs based on PEG and pepducin surface modification 基于 PEG 和 pepducin 表面修饰的 AuNPs 的稳定性和靶向性研究

Theoretical and Natural Science Pub Date : 2024-03-08 DOI: 10.54254/2753-8818/33/20240892

Cancan Wang

引用次数: 0

Assessment of feasibility of mRNA vaccines for cancer treatment 评估 mRNA 疫苗用于癌症治疗的可行性

Theoretical and Natural Science Pub Date : 2024-03-08 DOI: 10.54254/2753-8818/33/20240897

Xitong Wang

引用次数: 0

A preliminary exploration of the population distribution of tuberculosis in China 中国结核病人群分布初探

Theoretical and Natural Science Pub Date : 2024-03-08 DOI: 10.54254/2753-8818/33/20240924

Xindi Zhang

引用次数: 0

Evolution of engines: From steam to turbojet 发动机的演变：从蒸汽机到涡轮喷气发动机

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241149

Daopeng Zheng

{"title":"Evolution of engines: From steam to turbojet","authors":"Daopeng Zheng","doi":"10.54254/2753-8818/31/20241149","DOIUrl":"https://doi.org/10.54254/2753-8818/31/20241149","url":null,"abstract":"Engines, the mechanical workhorses powering modern societies, have a rich historical evolution, the Industrial Revolution marks a turning point, James Watts improvements, the rise of internal combustion engines, first with Nikolaus Ottos four-stroke cycle, later Rudolf Diesels compression-ignition engine. These engines fueled the automotive and aviation revolutions. In contrast, the Stirling engine, patented by Robert Stirling in 1816, offered a unique closed-cycle operation. Engines, from steam to internal combustion, continue to underpin technological advancements, shaping economies, industries, and daily life. This paper comprehensively analyzes the development and significance of four major engine types: the steam engine, the internal combustion engine, the Stirling engine, and the turbojet engine. The analysis encompasses various aspects, including their principles of operation, historical contexts, and practical applications. The paper concludes that these engines have played pivotal roles in shaping human history and technological progress. From the steam engines impact on industrialization to the internal combustion engines revolution of transportation, the Stirling engines potential for sustainable power generation, and the turbojet engines transformation of aviation and military capabilities, each engine type has made a unique and vital contribution to our worlds advancement. This narrative of engine evolution reflects human ingenuity and our ceaseless pursuit of technological innovation.","PeriodicalId":506830,"journal":{"name":"Theoretical and Natural Science","volume":"3 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predictive factors of happiness and policy countermeasure in post COVID-19 pandemic era 后 COVID-19 大流行时代的幸福预测因素和政策对策

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241150

Qihang Zheng

引用次数: 0

Convergence of polarized self-attention with consistent rank Chinese text classification 收敛极化自我关注与一致等级中文文本分类

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241133

Yetong Jin, Linfu Sun, Songlin He

引用次数: 0

The disease prevention and rescue system based on Lorentz-RR analysis technology for public welfare organizations 基于洛伦兹-RR 分析技术的公益组织疾病预防与救助系统

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241144

Maoran Sun, Qingqing Song, Shaohan Peng

{"title":"The disease prevention and rescue system based on Lorentz-RR analysis technology for public welfare organizations","authors":"Maoran Sun, Qingqing Song, Shaohan Peng","doi":"10.54254/2753-8818/31/20241144","DOIUrl":"https://doi.org/10.54254/2753-8818/31/20241144","url":null,"abstract":"Health concerns have become a significant focus in peoples daily lives. Currently, with the increasing demand for monitoring human health, some social organizations need to strengthen health detection technology, and various related technologies are emerging. The aim of this study is to develop a social organization disease prevention and assistance system that integrates the advantages and resources of social organizations, social service institutions, social workers, caregivers, service recipients, and their families. The main system is designed based on a front-end and back-end separation architecture, using core technology: the Lorenz-RR scatterplot classification algorithm to achieve the selection of classification algorithms, the development of AlexNet algorithm, and the optimization of dataset expansion algorithm, Thus, the improvement of the Lorenz-RR scatterplot classification algorithm of the AlexNet model is achieved, and the development of a social organization disease prevention and assistance system is completed. It has high accuracy and sensitivity in the analysis of relevant indicators of service objects, and its application value is significant, with widespread promotion significance.","PeriodicalId":506830,"journal":{"name":"Theoretical and Natural Science","volume":"45 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140259114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the development and application of digital twin for the full life cycle of bridge engineering 研究桥梁工程全寿命周期数字孪生系统的开发和应用

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241153

Hongkai Tao

{"title":"Research on the development and application of digital twin for the full life cycle of bridge engineering","authors":"Hongkai Tao","doi":"10.54254/2753-8818/31/20241153","DOIUrl":"https://doi.org/10.54254/2753-8818/31/20241153","url":null,"abstract":"Bridges play an important role in modern society, whereas many bridges are in poor condition and are characterized by complexity, randomness, and risk no matter what phase the bridges are in. Meanwhile, with advanced technologies such as IoT and Big Data, Digital Twin has been developed in different industries, such as aerospace. With multiple superiorities of real-time data detection, big data processing, full life-cycle management, etc., it is appropriate for bridge engineering. The paper aims to present a state-of-the-art literature review on the full life cycle of the application of Digital Twin in Bridge Engineering. The article discusses the relationship between Digital Twin and Building Information Model (BIM) and constructs a comprehensive framework for Digital Twin in Bridge Engineering. The review is classified into three main parts design and construction phase, operation and maintenance phase, and demolition phase based on different stages of the full life cycle. The results show the applications high potential and feasibility, and show that most of the current research focuses on the operation and maintenance phases. However, intensive research is still necessary to improve the accuracy, quality, efficiency, timeliness, and versatility of the Digital Twin in Bridge Engineering.","PeriodicalId":506830,"journal":{"name":"Theoretical and Natural Science","volume":"35 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of metasurface structures for biomedical sensing platforms: Principles, applications, fabrication, and future perspectives 生物医学传感平台的元表面结构综述：原理、应用、制造和未来展望

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20241152

Haochen Zhao

{"title":"Review of metasurface structures for biomedical sensing platforms: Principles, applications, fabrication, and future perspectives","authors":"Haochen Zhao","doi":"10.54254/2753-8818/31/20241152","DOIUrl":"https://doi.org/10.54254/2753-8818/31/20241152","url":null,"abstract":"Metasurfaces, renowned for their remarkable capabilities in manipulating electromagnetic fields, have been extensively investigated in the realms of optoelectronics and wireless devices. In the domain of biomedical sensing, the utilization of metasurfaces in optical biosensors has garnered escalating interest over the past three years. While conventional optical biosensors boast advantages such as label-free, real-time monitoring, high sensitivity, and rapid response, the integration of metasurfaces further enhances their wavefront manipulation, selectivity for multifunctional sensing, and the potential for device miniaturization to meet increasingly complex application requirements. Despite the promising advancements in this nascent field, there is currently a lack of a comprehensive review addressing the existing research achievements and future perspectives. This article aims to fill this gap by providing an exhaustive review and serving as a valuable reference for researchers embarking on the exploration of metasurface biomedical sensors. The review commences by elucidating the fundamental sensing principles, design processes, and key figures of merit. Subsequently, it delineates several prevalent applications, encompassing the diagnostic and monitoring of blood glucose, viruses, cancers, and drugs. The fabrication processes and techniques are also meticulously explored, offering insights into the intricate methodologies. The article concludes by outlining several promising areas for further exploration, accompanied by a critical analysis of structure fabrication methods with an eye toward future commercialization prospects.","PeriodicalId":506830,"journal":{"name":"Theoretical and Natural Science","volume":"38 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140076867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Traditional engines spark-ignition engine versus alternatives electric motor 传统发动机火花点火式发动机与替代品电机的对比

Theoretical and Natural Science Pub Date : 2024-03-07 DOI: 10.54254/2753-8818/31/20240973

Hongtao Pan

引用次数: 0