bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação das boas práticas de fabricação em linha de processamento de queijos Minas frescal e ricota
Authors: Santos Vidiany Aparecida Queiroz , Hoffmann Fernando Leite
Published: November 2023

Para a manutenção da integridade e qualidade dos alimentos e evitar contaminações de origem química, física ou biológica, é imprescindível a adoção de Boas Práticas de Fabricação (BPF). Dentre as técnicas utilizadas para a avaliação das BPF, há a análise observacional por meio da aplicação do formulário checklist. Nesse contexto, este estudo avaliou as adequações quanto às BPF em uma indústria de laticínios de pequeno porte produtora de queijos Minas frescal e ricota, localizada em São José do Rio Preto - SP, por meio da aplicação do formulário check-list. Pela avaliação realizada no laticínio, verificou-se importante melhora nos critérios de conformidade, com aumento de 43% para 78%. Os blocos relacionados aos manipuladores e à documentação existente na empresa não apresentaram melhorias, pela evidência de más condições nessas questões. Todos os demais blocos avaliados apresentaram importante melhora após a adoção de ações corretivas relativas às BPF. Diante destas observações, a adoção de ações corretivas pelo laticínio com relação ao ambiente físico, BPF e treinamentos de manipuladores são essenciais para garantir as melhorias observadas, com aumento da qualidade dos produtos e segurança dos consumidores.
Avaliação físico-química da qualidade de água de poços e minas destinada ao consumo humano
Authors: Scorsafava Maria Anita , Souza Arlete de , Stofer Monica , Nunes Claudete Azevedo , Milanez Thais Valéria
Published: November 2023

A água para o consumo humano foi avaliada segundo os parâmetros estabelecidos pela Portaria nº518 do Ministério da Saúde, que dispõe as normas de qualidade em sistemas de abastecimento público e soluções alternativas. O potencial de risco das águas provenientes de poços e minas de 100 municípios do estado de São Paulo, incluindo a capital, foi avaliado por meio de análise dos seguintes parâmetros: ferro, cor aparente, turbidez, nitrato, nitrito, amônia e flúor. No período de 2005-2008 foram coletadas 1759 amostras de águas, sendo 1356 de poços e 403 de minas. Das amostras de águas de poços analisadas, 8,5% apresentaram níveis de ferro superiores ao valor máximo permitido (VMP), 7,5% mostraram cor aparente, 5,0% turbidez, 10,8% nitrato, 0,4% amônia, 0,3% nitrito e 1,1% altos níveis de flúor. No mesmo período, em 7,0% das amostras de águas de minas analisadas, foram observadas alterações nos parâmetros ferro, 9,6% apresentaram cor, 5,2% turbidez, 14,5% com nitrato em níveis acima do VMP, 1,0% para nitrito, 0,4% amônia e 0,2% para flúor. Considerando os resultados obtidos torna-se de grande importância o monitoramento da qualidade dessas águas para o consumo humano.
Aceitação e intenção de consumo de pão de forma enriquecido com soro de leite em pó e carbonato de cálcio
Authors: Gurgel Cristiane Santos Sânzio , Maciel Janeeyre Ferreira , Farias Larissa Raphaela Gonçalves de , Costa Maria José de Carvalho , Moreira Ricardo Targino
Published: November 2023

Neste trabalho foram avaliados sensorialmente um pão de forma enriquecido com soro de leite em pó e carbonato de cálcio, em comparação com uma amostra comercial, por indivíduos de diferentes idades. Os pães enriquecidos apresentaram teores de 783 mg de cálcio/100 g. Participaram grupos pertencentes a quatro diferentes estágios de vida (G1=crianças, G2=adolescentes, G3=adultos e G4=idosos). Para G1 aplicou-se teste de aceitação global por escala hedônica facial (cinco pontos) e para G2, G3 e G4 aplicou-se questionário para caracterizar hábitos de consumo, teste de aceitação (escala hedônica nove pontos) e intenção de consumo (escala hedônica cinco pontos). Os resultados dos testes sensoriais foram analisados pelo teste t-Student em nível de significância de 5%. Para G1, o pão enriquecido foi tão bem aceito quanto à amostra comercial (p>0,05). O G2 demonstrou melhor aceitação e atitude de consumo do pão enriquecido, para todos os atributos sensoriais. Para G3, o sabor teve melhor aceitação do que o pão comercial, sem diferenças nos demais tributos e na atitude de consumo (p>0,05). O G4 não diferiu na aceitação e na atitude de consumo dos pães (p>0,05). O pão de forma enriquecido analisado neste estudo demonstra ter elevado potencial de comercialização.
Análises rápidas para prever a expansão do polvilho azedo
Authors: Marcon Maria Janete Angeloni , Kurtz Diego Jacob , Maraschin Marcelo , Reginatto Valéria , Amante Edna Regina
Published: November 2023

O polvilho azedo é um amido de mandioca em que são feitas modificações químicas e enzimáticas, sendo usado na fabricação de produtos tradicionais, como pão de queijo, em função de sua propriedade de expansão, que induz a formação de estrutura leve e alveolar, mesmo sem adição de qualquer produto químico ou fermento biológico. O presente trabalho foi realizado com o objetivo de estabelecer alguns procedimentos técnicos simples para efetuar a avaliação prévia da propriedade de expansão do polvilho azedo a ser utilizado. Foi estudada a relação entre os amidos de mandioca nativos e os do polvilho azedo produzido em laboratório. Um questionário foi aplicado entre os padeiros locais com o objetivo de averiguar o motivo para efetuar a escolha do polvilho azedo, o que conduziu a algumas marcas; essas marcas selecionadas foram também analisadas neste estudo. As características referentes a fator ácido, pH, volume específico, poder de inchamento e viscosidade intrínseca apresentaram boa correlação com a propriedade de expansão. As determinações de fator ácido, pH e perda de peso são procedimentos fáceis e acessíveis para serem efetuados em pequenas indústrias e padarias.
Aplicação de ácido fítico em produto cárneo tipo hambúrguer
Authors: Brum Fabrício Barros , Macagnan Fernanda Teixeira , Monego Magda Aita , Kaminski Tiago André , Silva Leila Picolli da
Published: November 2023

Neste trabalho foram avaliados os efeitos da adição de ácido fítico sobre a cor e os indicadores de vida de prateleira em produto cárneo do tipo hambúrguer. Os produtos preparados por três tratamentos com ácido fítico (0,08; 0,10; e 0,20%) e um padrão com adição de eritorbato de sódio (0,10%) foram armazenados a -20 ºC por 90 dias com análises periódicas a cada 15 dias. O tratamento-padrão mostrou ser mais eficiente na manutenção de cor nos períodos iniciais, enquanto que o tratamento com 0,20% de ácido fítico apresentou menor variação na coloração e maior intensidade de cor no período final de armazenamento. Os valores de pH não variaram significativamente e mantiveram-se adequados ao produto. Os valores de substâncias reativas ao ácido tiobarbitúrico apresentaram comportamento inicial anômalo, com estabilização após 30 dias na presença das diferentes concentrações de ácido fítico, e manutenção de valores significativamente inferiores ao produto-padrão. O presente estudo mostra o potencial efeito do ácido fítico em produto cárneo tipo hambúrguer.
Lived Experience: Students’ Perceptions of English Language Online Learning Post COVID-19
Authors:   Northern Border University, Saudi Arabia, Mohamed Amr , Mohd Nasim Sallem ,   Prince Sattam bin Abdulaziz University, Saudi Arabia, Aljanada Rose ,   Northern Border University, Saudi Arabia, Alfaisal Aseel ,   Northern Border University, Saudi Arabia
Published: November 2023

The purpose of this study was to assess university students' perceptions regarding online learning post-COVID-19, with a focus on international relevance. 260 students were surveyed online across six dimensions of online learning using an online survey. The findings indicate that synchronous audio and video learning can be an effective alternative to traditional learning, especially for male students. Online learning success requires taking student demographics and digital equity into consideration in a competitive higher education landscape. In addition, the study recommends further research to determine the effectiveness of online learning across disciplines and diverse student populations. The findings of this study indicate that successful online learning outcomes in international educational settings require the incorporation of digital technologies and synchronous teaching methods.
Effects of Perceived Gender Roles on Female Poverty, the Case of Bosnia and Herzegovina
Authors: Bučan Sumka , Ramić-Mesihović Lejla
Published: November 2023

This research examines the position of women in Bosnia and Herzegovina (BiH) in relation to their participation in the labor market, average income differences between men and women and causes that affect their situation in respect to social norms and perceived gender roles. Through identifying how harmful practices perpetuated by social norms contribute to increasing inequality that widens the poverty gender gap, the research discovers a high percentage of working-age women being outside the labor market, a higher unemployment rate among women, and gender disparity in occupations and positions in BiH. By surveying the perception of prevalent social norms, particularly those connected to roles the society ‘assigns’ to women and men, the study identifies linkages between the roles and the position of women in the labor market and decision-making. The special focus is on multidimensional aspects of poverty, particularly in cases of limited access to jobs, education, and public services.
Remote Sensing Target Detection Algorithm based on CBAM-YOLOv5
Authors: Bai Liang , Ding Xuewen , Chang Limei
Published: November 2023

With the continuous improvement of traditional target detection algorithms, remote sensing targets have become a research hotspot. Aiming at the problems of low recognition accuracy caused by small target size and high background complexity in remote sensing images taken from overhead view, this paper proposes a remote sensing aircraft detection algorithm based on CBAM-YOLOv5. By introducing the lightweight convolutional attention module CBAM module into the YOLOv5 network, the feature extraction capability of the algorithm is improved to solve the problem that the small-size remote sensing target has little or even lost information on the feature map after multiple downsampling operations. The mAP of the proposed algorithm reaches 93.1%, which is 1% higher than that of the original algorithm, and the recognition of small-size remote sensing targets has been significantly improved.
Application of nanomaterials in lithium-sulfur batteries and lithium-air batteries
Authors: Chen Xuanxuan , Wang Kun , Yin Junchen , Yue Kaiqin
Published: November 2023

Because of its high voltage, high specific energy, and other good qualities, lithium-ion batteries have recently become one of the most popular studies. In the context of nanomaterials, this research investigates the function of nanomaterials in the application of lithium-sulfur and lithium-air batteries. In addition to examining the classification, benefits and drawbacks, uses and advances of nanomaterials, this essay also examines the fundamentals of two batteries, as well as the uses of nanomaterials in both types of batteries. The results show that nanomaterials have a very large surface area and a sudden change in material properties because of their arrival at the nanoscale, and have very good mechanical and optical properties, which have a very good contribution to the performance of the batteries. However, it was discovered that nanomaterials in lithium-ion battery applications still have issues, such as high cost and challenging synthesis procedures, through the investigation of several nanomaterials in two batteries. In addition to offering fresh perspectives for society, this study seeks to better understand the economic and safety issues associated with two batteries used in practical production.
Research on the application of nanomaterials in new energy batteries and future development prospects
Authors: Feng Guanlin
Published: November 2023

Nowadays, new energy batteries and nanomaterials are one of the main areas of future development worldwide. This paper introduces nanomaterials and new energy batteries and talks about the application of nanomaterials in new energy batteries and their future directions. Nanomaterials can bring human technology to a new level and bring many new functions to objects. It can be objected that are lighter, stronger, and higher. Because of the smaller surface area, the product made by nanomaterials is more stable. And they have higher sensitivity, as well. However, they have disadvantages too, such as pollution, and poor nanotechnology humans controlled. But in any case, nanomaterial plays a vital role in the technological development of mankind. A new energy battery is also one of the future development goals of mankind, it is an energy-saving battery that can reduce the pollution of the environment. But poor charging speed and poor continuity are its weaknesses. However, it does not stop it from gradually replacing the original traditional battery and becoming the mainstream battery in the future. Nanomaterials play a key role in improving new energy batteries improving the stability of batteries, accelerating battery charging, and so on. It can help people to understand nanomaterials and new energy batteries and their applications. It can also help to understand their future research directions and the market development of nanomaterials and new energy batteries.
Review of innovations in low-power flip-flops based on the development of innovative logic gates
Authors: Luo Youbin
Published: November 2023

Integrated circuits have advanced quickly alongside the semiconductor industry's tremendous growth. The primary design considerations for each circuit in a VLSI data path are minimization of area and power consumption. As a very important logic unit in the integrated circuit, reducing the flip-flop's power consumption is of great significance for improving the performance of the whole circuit. There are many ways to reduce the power consumption of the flip-flop. This paper reviews several new low-power flip-flop designs using methods to improve the logic structure of flip-flops and their logic gates, including a reversible flip-flop design with reversible gates, a flip-flop design with memristors, and a sense amplifier-based flip-flop. The analysis shows that all three options for improving the logic gate can reduce the power consumption of the flip-flops and also have a positive effect on reducing the size of the device.
Conventional usages and innovation of microneedles
Authors: Wang Qingshi
Published: November 2023

Nowadays, microneedle array patches (MAPs) are playing a much more role in solving medical, chemistry and biology problems and giving more incentives to these fields. This paper made a summary of traditionally practical value of MAPs since its invention and gave some vivid and realistic examples of creativity in the field of microneedle usage in order to get a fuller picture of microneedle and related newest applications. Relevant information and details are collected from the latest papers and reports, and in this way can the author draw conclusions accurately and critically. According to what is mentioned in the paper, it is time to pay more attention to the different advantages of MAPs while regarding it as a kind of effective drug-releasing tool. At the end of the paper, the author envisioned some possible usages of microneedles and enlightened readers to find new ways to make full use of different MAPs.
Carbon emission assessment during construction phase based on building information model (BIM) and life cycle assessment (LCA)
Authors: Li Jiajun
Published: November 2023

In recent decades, the carbon emissions from building structures have posed a huge threat to the environment and to some extent contributed to global warming. Life cycle assessment (LCA) is the most commonly used carbon emission assessment technique. However, this is a challenging task as the amount of data for a single material is enormous and difficult to process. A new method utilizing the latest computer technology has been proposed. This paper uses Building Information Model (BIM) and Revit software to establish a three-dimensional model of the structure. BIM can export and imply material information based on other platforms. This makes it possible to link BIM tools with lifecycle assessment by defining environmental data for each unit in the model. The entire process is divided into six stages. This article focuses on the calculation of carbon emissions during the construction phase and introduces a method that helps with early structural decision-making. Through case studies of existing buildings, the quantity of materials used in the building was analyzed, and the relationship between pre construction carbon emission factors and material quantity was solved.
Application of nanomaterials in flexible sensors
Authors: Feng Ziyi , Liu Ziyang , Shao Tianying , Zhang Yifei
Published: November 2023

Flexible electronic sensors have widespread applications in both traditional and emerging fields, particularly for human-computer interaction (electronic skins, wearable electronic devices) and physical and environmental monitoring for people. Flexible electronic sensors can be bent and folded readily without interfering with their detecting performance. However, researchers still face many difficulties. For instance, traditional flexible materials (such as organic materials) are less sensitive to external signals, and the production progress of flexible sensors is complicated. This review recapitulates applications of nanomaterials in flexible electronic sensors. Firstly, the working principles and applications of three common types of flexible electronic sensors, the piezoresistive sensor, the capacitive sensor, and the piezoelectric sensor, are introduced. Then, the paper summarizes methods for improving sensors performance in health monitoring, disease diagnosis and biological detection by application of different nanomaterials to flexible substrates. Finally, the future development of flexible nanomaterial sensors prospects. It is found that nanocomposites of metal nanomaterials, carbon nanomaterials and other polymers with unique tuned photoelectrical properties show enhanced performance as flexible sensors and further research is needed to improve the material-substrate integration to promote the large-scale application as wearable sensors.
Application of scanning electron microscopy in two-dimensional material characterization
Authors: Li Zhuan , Yao Junyi
Published: November 2023

With the development of nanomaterials technology, scanning electron microscopy is widely used to investigate nanomaterials, providing a means to characterize materials at the nanoscale. This paper confronts the Scanning Electron Microscopy technique, which has important implications for studying two-dimensional nanomaterials. Firstly, this paper introduces the features and structure of Scanning electron microscopy, including the fast observation speed, high distinguishability, a wide range of analyses, the unique properties of two-dimensional nanomaterials, and preparation methods. Further, this paper discusses the application of scanning electron microscopy techniques in the characterization of two-dimensional materials, including imaging and analysis for the surface morphology and crystal structure, which solves the problem of the previous inability to characterize two-dimensional materials at the nanoscale. In addition, this paper highlighted the potential of scanning electron microscopy in facilitating the development of 2D materials applications in other fields and pointed out the further technique development requirements for using scanning electron microscopy as an advanced characterization method.
Wearable sensing electronic devices with health monitoring function
Authors: Song Kuoyu
Published: November 2023

Wearable mobile terminal (Wearable Devices) is a wearable mobile terminal that integrates sensors, wireless communication and multimedia technology into the human body. With the development of computer technology, wearable devices can perceive, record, analyze, adjust, intervene and even treat various diseases so as to maintain human health. Wearable electronic products refer to the intelligent exchange of information with the outside world using their own internal sensors and chips according to their physiological function or adaptability to the outside world. Wearable devices have been edging research in recent years, this paper introduces the characteristics of smart wearable devices, the materials currently applied, the different modes (types) of sensors, and discusses how the sensor network used for monitoring and transmitting recorded data can process the data network efficiently and accurately. In addition, as the sensor needs to consume more power to record and process the information obtained from the body, the battery life of smart wearable devices shortens. This paper summarizes some major concepts and methods related to the energy-saving of sensor components. Battery life significantly impacts the future personalization and universalization of health monitoring devices.
Advancements and trends in GaN HEMT
Authors: Guan Wuxiao
Published: November 2023

Gallium Nitride based High Electron Mobility Transistors (GaN HEMTs) technology has made significant advancements, revolutionizing the field of power electronics. With their unique properties such as high breakdown voltage, high frequency, and high electron mobility and high-power capabilities, GaN HEMTs offer significant advantages over traditional silicon-based devices, such as improved power density, higher operating temperature, and enhanced reliability. GaN HEMTs have shown great potential in sensing applications, such as gas and biosensors. This thesis explores the advancements and trends in GaN HEMT technology, including crystal growth technology, sensing applications, packaging technology, and performance optimization. Despite significant progress, challenges such as heat dissipation, production costs, and yield and reliability issues need to be addressed. Future research directions may focus on improving integration with other technologies, exploring potential applications in emerging fields such as 5G communication, and addressing these challenges. Overall, GaN HEMT technology has made significant advancements and is set to play a pivotal role in various industries.
Seismic vulnerability analysis on an extra-large highway-railway dual-used arch bridge
Authors: Yang Fengyu
Published: November 2023

The seismic vulnerability analysis is of great important for the design, operation and maintain. The selected extra-large highway and railway dual-used arch bridge contains high geometric nonlinearity and is one of the transportation junctions. Therefore, it is necessary to conduct seismic response analysis. The research results can provide reference for the seismic design and seismic response analysis of target bridge and similar typed bridges. Thus, it has high theoretical value for the design and promotion of similar bridges. This paper starts with a theoretical analysis, using the finite element software LS-DYNA to build a dynamic calculation model of the real bridge and carry out modal and time response analyses. The strength, vulnerable components and stability of the bridge under three-way seismic action at for different earthquake excitation waves (Wenchuan earthquake, Chichi earthquake, Kobe earthquake and El-Centro earthquake) are investigated. Through analysis and comparison of numerical calculations, the seismic performance of the target bridge was comprehensively evaluated.
Performance Improvement Based on Latitude Classification of Perovskite Light-Emitting Diodes
Authors: Li Yueqi
Published: November 2023

The Perovskite Light-emitting Diode (PeLED) can effectively convert light energy and electrical energy, and the study of Light-Emitting Diode (LED) is conducive to the efficient use of energy. Starting from the dimension classification of perovskite light-emitting diodes, this paper introduces the advantages of perovskite in different dimensions and the methods to improve the performance of perovskite light-emitting diodes. It is expected to realize the preparation of low-cost and high-performance perovskite light-emitting diodes. Light-emitting diodes or electroluminescent devices have many excellent properties such as high brightness, wide colour gamut, low power consumption, long life and environmental protection. They have been widely used in the field of display and lighting, and have become one of the most competitive products in the optoelectronic industry. With the development of the LED industry and the higher requirements for LED display in the new era, scientific researchers exploration of new electroluminescent materials has also been gradually strengthened. Among them, organic molecules and new low-dimensional halogenated perovskite have attracted much attention because of their many advantages. The performance of LED depends on the type of light-emitting material and device structure. It is also important to understand the light-emitting mechanism of such devices and their internal carrier transport mechanism. Studying the light-emitting mechanism and carrier transport mechanism of LEDs based on different light-emitting materials is not only of scientific significance, but also can provide a reliable theoretical basis for further improving their performance.
Application of Inorganic Nanomaterials for Drug Delivery in Lung Cancer
Authors: Wu Yuang
Published: November 2023

Lung cancer has been one of the most common cancers in the world for more than 100 years and has taken many people's lives. Many people suffer from lung cancer due to smoking, second-hand smoke, and serious air pollution or pollutant gathering environment. It is necessary to find a good medical solution. Compared with traditional chemotherapy and immunotherapy, targeted therapy has more advantages in the impact on patients and the efficiency of treatment. How to develop targeted therapeutic drugs has become a topic, and nanoscale targeted drugs have become the most appropriate choice. Among them, there are many inorganics suitable for nano-targeted drugs and nano-drug carriers, such as metals, metal oxides, and non-metals. By blocking the genetic material in lung cancer cells, it can avoid the division and differentiation of lung cancer cells, so as to achieve the purpose of treating lung cancer. This review will focus on the above three kinds of nano-targeted drugs, and discuss their therapeutic principles, drug delivery, activation mode, and biotoxicity.
Poly (Lactic Acid) Applications in Biomedical Engineering
Authors: Luo Bowen
Published: November 2023

Medical devices like implants are playing a pivotal role in medicine. As a polyester, Polylactic acid (PLA) and its copolymers are widely used in the medical area. They are used in several sections including cardiovascular and orthopedic devices, as well as advanced technologies of tissue engineering and drug delivery. In this paper, cardiovascular devices including applications of PLLA coating as drug delivery system and BVS material are introduced. Specifically, PLA can be used to foster scaffolds for bone tissue and cardiovascular tissue engineering. Then this paper introduces PLA applied in the form of nanoparticles and micelles in drug delivery. The special degrading process makes PLA an active drug delivery carrier. And it could also be used to produce biodegradable orthopaedic operation devices and offer the advantage of being free from taking out of the human body. Processing techniques are pivotal prerequisites of applications of medical usage, like electrospun fibers are used in cardiovascular and drug delivery applications. The paper summarizes the use of PLA material in those areas, and foresees the future for a prediction of the attractive prospect. Although the applications are faced with limitations like mechanical properties now, they still have a promising future in biomedicine.
Principle and Application of Lipid Nanoparticles in Cosmetics
Authors: Yu Linwen
Published: November 2023

Lipid nanoparticles (LNs) are colloidal particles having a biocompatible lipid matrix and nanoparticle (NP) sizes between 100 nm and 400 nm. They are called "nanosafe" carriers and show outstanding tolerability. Solid lipid nanoparticles use lipid as the skeleton material which has a high melting point. SLNs have the characteristics of high physical stability, relatively less drug leakage and good slow release, low toxicity and easy to mass production. The structure of the solid particle matrix allows solid lipid nanoparticles (SLNs) to be distinguished from nanostructured lipid carriers (NLCs). NLC is prepared by mixing liquid lipids and solid lipids. NLC improves the solubility of the active substance, improves the release ability of the substance, and also prolongs the storage life of the active substance in the carrier. Plenty of characteristics for skin application of pharmaceuticals and cosmetics are displayed by SLNs and NLC, such as drug targeting, regulated release of active ingredients, occlusion properties, and related enhancements to penetration and skin hydration. This review focuses on the characteristic of SLNs and NLCS, analyzing their advantages and disadvantages and lipid nanoparticles application in cosmetics are described in detail.
Optimization Model for Timing of Preventive Maintenance of Asphalt Pavement Based on Decision Trees
Authors: Li Huishan , Jiao Lingrui
Published: November 2023

The timing of preventive maintenance for asphalt pavement determines the effectiveness and cost-effectiveness of preventive maintenance measures. Firstly, a weighted average method combining subjective and objective factors is used to evaluate the performance index of road sections and select preventive maintenance measures. Secondly, a decision tree model for preventive maintenance of highways in Gansu Province is established using field measurement data to determine the timing of preventive maintenance for road sections. Finally, the model is validated using the example of the G22 Qingdao-Lanzhou Expressway by evaluating the pavement service performance index and the timing of preventive maintenance. The results show that compared to directly establishing decision trees based on uniform standards, the decision tree established using field measurement data reflects the differences in the importance of various decision indicators and respects the objectivity of road data. It improves the poor portability of the original decision tree model and enables more accurate determination of the timing of preventive maintenance.
A Comprehensive BIM Platform Development Based on Sustainable Construction Concept
Authors: Han Yudong
Published: November 2023

In recent times, sustainable development has been recognized as a pressing need for the construction industry. It involves balancing economic, environmental, and social factors to promote healthy and stable growth while regulating industry behavior. Building Information Modelling (BIM) has emerged as a revolutionary tool for the industry, primarily focusing on economic and environmental aspects of sustainability. However, the social aspect of sustainability, encompassing the well-being and safety of construction personnel, has not received enough attention. Strengthening attention and reform of social factors in the industry is crucial for promoting the sound development of the construction industry. This study proposes a comprehensive BIM platform based on sustainable construction that takes into account environmental, economic, and social factors. By integrating social factors into BIM, we can promote a culture of safety, improve working conditions, and enhance the quality of life for construction personnel. This will not only benefit workers but also lead to better project outcomes, increased efficiency, and long-term sustainability for the construction industry as a whole.
Research on the influence of various factors on the fluorescence function of silver nanoclusters as biomarkers
Authors: Zhang Xuanrui
Published: November 2023

This review focuses on the impact of numerous conditions on the fluorescence function of silver nanoclusters (AgNCs) as biomarkers. Factors such as particle size, structure and different ligand types are explored. First off, differential stability, sensitivity, cellular uptake, and biodistribution as well as red or blue shifts in absorption and emission wavelengths are caused by varied particle sizes. Furthermore, in the context of detecting microRNA using AgNC-based probes, the presence of a mismatched self-dimer structure is also crucial for achieving a significant red emission. In the final section, the considerable influence of ligandsdivided into primary and secondary ligandson the photoluminescence (PL) characteristics of atomically accurate AgNCs is examined with a focus on Ag29 nanoclusters.
Transformable architecture: An alternative for human communication in a post-pandemic world
Authors: Yang Junyi
Published: November 2023

Since the outbreak of the COVID-19 epidemic, people's lifestyles have been significantly changed. In a post-epidemic era, some of the existing social problems are magnified by the changes in lifestyle. Temporary isolation at home becomes commonplace and continuously makes people think more carefully and deeply about their houses' functionality, safety, and comfort. In addition, the emotional impact of the epidemic has also forced people to get more security and happiness from the outside environment. By summarizing the problems of the existing buildings during the epidemic, this paper collects and studies different types and characteristics of movable architecture to conclude how these transformable designs can help people deal with the problems exposed in functional space and mental needs arising from the epidemic era. The results of different transformable architecture techniques on spatial boundaries are summarized from transformable or movable buildings. The combination and penetration of transformable architecture with different scales of space are used as the entry point to propose that movable architecture can promote communication and exchange between people. The core value of movable architecture is to break the inherent boundary of architectural space and make more connections between the inside and outside space. Thus, it lays the foundation for having more face-to-face communication between people.
Application of BIM technology used in the urban bridge design
Authors: Li Wenxin
Published: November 2023

BIM technology is a new technology that is at the forefront of research in the field of civil engineering, and has been preliminarily applied in the design stage of infrastructure. However, BIM software design professionals are not widely used in China, and projects that use BIM to design urban bridges are still relatively rare. This paper is the analysis of existing cases of urban Bridges designed based on BIM related software. The methods and steps of using BIM related software for design are summarized. It is concluded that BIM technology can play a role in improving and enhancing the 2D design results in the design of urban Bridges, improve the efficiency of bridge design, and pave the way for the subsequent construction stage and operation and maintenance stage. Through the analysis of the application of BIM in urban Bridges, this paper provides basis and reference for the design projects of urban Bridges in the future.
Structural analysis and optimization of steel truss bridge based on finite element method
Authors: Yang Xuran , Li Xirui , Sun Puyu
Published: November 2023

In view of the defects of the current mainstream structural safety analysis method of Truss bridge, the safety analysis method at the component level should be further developed. Therefore, it is necessary to carry out the overall safety analysis and structural optimization at the structural level. Based on the concrete data of the actual steel truss beam bridge, this paper uses ABAQUS and MIDAS finite element software to model the truss structure. First of all, the static analysis is carried out, and then the structural analysis and optimization of the steel truss beam bridge is carried out with the elastic modulus reduction method. Based on the linear elastic finite element method, the bearing state of each component is solved, and the ultimate bearing capacity of the whole structure is calculated iteratively. Thus, the limitation of incremental nonlinear finite element method is overcome, and higher calculation accuracy and efficiency are realized.
Analysis on the key construction technology of steel structure in prefabricated high-rise building-A case study of Pingshan new energy vehicle industrial park in Shenzhen
Authors: Gao Bohan , Jiang Xin , Zhang Jing , Zhang Yuang
Published: November 2023

Prefabricated steel structures are more energy efficient and adaptable than ordinary structures. The characteristics of prefabricated steel structures can better meet the needs of modern buildings, such as diversification, large space, and high strength. At the same time, it has the advantages of shortening the expected construction period and improving the construction efficiency. In this paper, the plant of Pingshan new energy automobile Industrial Park in Shenzhen is taken as a case to study the key construction technology of steel structure in prefabricated high-rise building. Firstly, the plant of Pingshan new energy automobile Industrial Park in Shenzhen is compared with the ordinary plant, and the advantages and disadvantages of the first "skyscraper" workshop are analyzed. Then, section construction technology of steel structure plant members, high-rise steel structure lifting technology, green building technology are analyzed, respectively. Finally, the prospect and development of prefabricated building are expounded. It is suggested that the prefabricated high-rise building can be used in more architectural designs.
Application analysis of green building technology in rural housing
Authors: Liang Yehong
Published: November 2023

In the process of construction and use of traditional rural buildings in China, the phenomenon of environmental pollution and resource waste is very serious. The introduction and use of green buildings can make natural resources more widely and rationally utilized through scientific overall design. This paper mainly studies the application of green building in rural housing. Firstly, the characteristics of rural green building design are analysed from three aspects: water saving and water resource utilization, energy saving and renewable energy utilization, material saving and greenhouse gas emission reduction. Then, through the detailed introduction of renewable energy utilization technology and clean energy heating and cooling technology, the application of rural green building technology is specified. Finally, the paper summarizes the green design, construction and use strategy system suitable for Chinese contemporary rural buildings. It is hoped that the research of this paper will provide effective reference for the design and use of rural residential green buildings.
Research progress on the modification of organic highly conductive polymer PEDOT: PSS
Authors: Tang Hao
Published: November 2023

PEDOT: PSS (poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonic acid)) is a high-profile organic conductive polymer, which is widely used because of its excellent conductivity and stability. The application of PEDOT: PSS is of great significance in the fields of energy, electronics, medical treatment and the environment. It offers an efficient, transparent, flexible, and environmentally friendly material option that drives various innovations and advancements. However, the traditional PEDOT: PSS can no longer meet the high requirements of today's electronic devices. Therefore, changing the conductivity, ductility and other properties of PEDOT: PSS through various physical and chemical methods has become an important topic. This paper reviews the progress of effectively improving the conductivity of PEDOT: PSS by reviewing PSS doping optimization, solvent doping modification (inorganic acid, organic reagent), and nanomaterial modification (CNTs, Graphene), so as to provide researchers with directions. Overall, PEDOT: PSS, as a material with excellent performance and wide application potential, has broad prospects for its application. With the continuous demand for flexible electronics, renewable energy, smart optoelectronic devices and biomedical applications, PEDOT: PSS will play an important role in these fields and promote the further development and innovation of related technologies.
Research on the comparative analysis of thrust and specific impulse performance - different cycle types of liquid rocket engines
Authors: Mao Mingyu
Published: November 2023

As one of the most crucial parts of deep space exploration and interstellar colonisation in the global space industry, the development of rocket engines plays a vital role. The subject of this study is to investigate the effect of different cycling methods on the thrust and specific impulse of liquid rocket engines. The study will cover seven typical cycle methods and hopes to contribute to the subsequent development of more efficient and reliable liquid rocket engines, provide designers and engineers with a reference for optimising design and performance, and provide the basis for other future research in related fields that will have a profound impact on the space industry.
A comparative study of two urban planning models: The linear city model and the 15-minute city model
Authors: Wang Shuodong
Published: November 2023

People have been exploring the perfect layout of a city since the birth of the first human settlement, it is not only a matter of aesthetics, but a complex and delicate subject. In modern cities, multiple city planning models have been proposed and experimented by city-planners, since an effective model can help the government to manage the flow of people, money and resources. In recent years, the concept of a 15-minute city has gained more and more popularity, while another hot topic is the linear city, both of them are supported by scholars, hoping that they may solve some of todays urban problems like inequality and pollution. This article considers the two models from four different aspects, namely environment, health, wealth and growth potential, comparative analysis is carried out to measure each models ability, evaluation of the feasibility of each model in practice is also made. Finally, a suggestion regarding how to support the implementation of the two models is made, a direction for further supportive research is also provided.
Research on active user detection and channel estimation algorithms in massive access
Authors: Tian Zhang
Published: November 2023

Massive Access is a supporting technology for scenarios like the Internet of Things, and is also one of the typical scenarios defined by 5G. Unlike traditional multi-user communication, the data of these nodes is generally sudden, so only a small proportion of nodes are active at a certain time. If the traditional request resource allocation protocol mode is adopted, it requires authorized access to achieve dynamic resource allocation, which will result in excessive protocol overhead. Therefore, Grant-Free transmission is required. It is impossible to recover the data transmitted by active users during Grant-Free transmission because the base station is unaware of who is transmitting the data. Therefore, the system must first do active user detection and channel estimation. A channel estimation technique based on Compressed Sensing is presented in this paper. the EM-BG-AMP algorithm is reproduced and applied. By comparing the accuracy of the EM-BG-AMP algorithm in channel estimation under physical backgrounds, this essay gives the range of optimal received signal-to-noise ratio:100dB and more. Also, this essay demonstrates that the performance of the EM-BG-AMP algorithm weakens as sparsity increases.
Advances in magnetic nano-wave absorbing materials
Authors: Liu Yuan
Published: November 2023

Magnetic materials are materials with specific magnetic properties, produced mainly by chemical methods such as co-saturation and high temperature pyrolysis, and with controllable product morphology and size. Magnetic particles have a high surface activity and a tendency to agglomerate, which can not only improve their dispersion and biocompatibility, but also achieve specific functions through surface modification in the actual research process. The research and application of wave-absorbing materials will have a major impact on the development of civilian electromagnetic radiation shields. Absorbents with good wave-absorbing properties are at the core of wave absorbing materials, and to meet the requirements of their thin, light, wide and strong properties, absorber research has also advanced towards high efficiency, composites, compatibility and intelligence. By summarising and analysing existing research, this paper provides a comprehensive overview of the research achievements and applications of magnetic wave absorbing materials in the medical and military fields to further explore the application potential, current challenges and future developments of such materials in various fields.
Principle and applications of quantum dots in zinc battery
Authors: He Su
Published: November 2023

With the advent of quantum dots, it has been widely used to various fields of material science to enhance the performance. This study focuses on the potential of graphene quantum dots (GQDs) to improve the performance of zinc batteries. Due to its unique photoelectric properties, high surface area and excellent conductivity, GQDs shows significant application potential in the field of battery technology. This article mainly discusses the possibility of using GQDs to improve the charge and discharge efficiency of zinc batteries, including how to improve the conductivity of the electrode, provide more active sites, and increase the energy storage capacity of the battery. The paper also identifies key challenges and limitations in this area, including the material complexity of GQDs, scalability issues, impact on battery stability, and environmental impact. Finally, the article provides some ideas on how to address these challenges and the future of GQDs applications in zinc batteries.
The quest to mitigation of aviation emissions and pollutions
Authors: Zhang Qingchuan
Published: November 2023

With the aviation industry's continuous development and commercial air travel's growing popularity, the emissions and pollution resulting from air transportation have experienced a rapid surge. In recent years, as environmental awareness has increased and there has been a growing reflection on the pollution caused by technology, the significance of aviation emissions has been increasingly acknowledged. This article aims to summarize achievements and challenges concerning the current state of aviation emissions and the technologies employed for their reduction. It begins by outlining the present state of aviation emissions, followed by an analysis of common pollutants emitted by the aviation sector, such as NOx, CO, and HC, as well as the mechanisms underlying greenhouse gas emissions and their associated hazards. Furthermore, the article explores several prevalent emission reduction strategies, including applying biofuels, improving combustion chambers, and optimizing flight procedures. Finally, the article provides an outlook on potential future directions for aviation emission reduction technologies.