Low-carbon Life Research Articles

Experimental Study on Compressing and Insulation Performance of Recycled Fiber Concrete

In order to study and explore the related changes of crack resistance, compressive strength and thermal insulation performance of recycled fiber concrete blocks with polyester fiber as the main component. The test blocks were designed and manufactured in the laboratory, three kinds of concrete test blocks with different specifications were obtained after curing for 28 days. Through experiments, three kinds of test blocks with different specifications were tested for thermal insulation performance, crack resistance and compressive strength. With the help of the electronic universal testing machine controlled by microcomputer, relevant data are obtained. The results show that the fiber concrete with polyester fiber as the main component has good crack resistance and thermal insulation performance, which can prevent new cracks and delay the development of cracks in matrix materials to a certain extent. In addition, waste clothes are used as raw materials for research to solves the problems of cost and environmental pollution of traditional fiber concrete, and reduces the pollution of traditional waste clothes treatment. Waste fabric is also a form of waste of social resources. Therefore, rational utilization of this potential huge resource is the inevitable requirement of a conservation-oriented society and a low-carbon life, and the only way for sustainable development.

Synthesis and Physicochemical Properties of CO2-switchable Gemini Surfactants

Conventional surfactants have excellent performance but not easily recycled and sustainable. The CO2/N2 switchable Gemini surfactants can be reused while maintaining performance and can also effectively utilize greenhouse gas CO2, thereby reducing carbon emissions. In our work, three tertiary amines N, N'-dimethyl N, N'-dialkyl ethylenediamine with different hydrophobic chain lengths (CnDEs, n = 12, 14, and 16) were fabricated by a two-step process using alkyl bromide, ethylenediamine, formic acid, and formaldehyde as raw materials. Structures of intermediates and end products were characterized by FTIR and 1H NMR. The Gemini surfactants such as N,N′-dimethyl N,N′-bis (dodecane, tetradecane, and hexadecane) alkylethylenediamine bicarbonates (CnDBs, n = 12, 14, and 16) were generated by the synthetic corresponding tertiary amines after bubbling CO2. After bubbling N2, the bicarbonate surfactants were converted into tertiary amine non-surfactants again. The reversibility of the switching of three surfactants was verified by measuring the changes in surface tension, zeta potential, particle size distribution, and foaming volume before and after CO2/N2 bubbled into the tertiary amine solutions. The physicochemical properties of CnDBs were studied by thermogravimetric analysis, surface tension measurement, cation content measurement, and dissipative particle dynamics (DPD). The results demonstrated that the synthesized CO2/N2 switchable Gemini surfactants had excellent reversibility and reproducibility. The application properties indicated that the Gemini surfactants could reduce interfacial tension of oil/water to ultra-low value; possessed good cation conversion rate and decent foaming properties. Furthermore, the surfactant performances were verified through DPD simulation experiments. With the industrialization of synthetic technology, the costs of CO2/N2 switchable Gemini surfactants will effectively decrease. Storage and utilization of considerable quantities carbon dioxide promote our green low-carbon life, which are conducive to the achievement of the national strategic goal of China's carbon peak in 2035 and carbon neutralization in 2050.

Design and Implementation of Garbage Classification System under the "Double Carbon" Target

With the national goal of "carbon peaking" and "carbon neutrality", the society is increasingly advocating garbage classification, energy saving, environmental protection and low-carbon life. This paper designs and develops a garbage classification system, analyzes the business process, data process and database design of the system, and realizes the core functions of garbage classification information management, mall gift management, points management, message management, etc., which can improve the waste recycling link. , The user's initiative is not strong and so on.

RCCI combustion with renewable fuel mix – Tailoring operating parameters to minimize exhaust emissions

This article demonstrates a feasible approach towards minimizing negative impact of combustion, which comprises low net carbon emissions operation of internal combustion engines while achieving ultra-low engine-out exhaust emissions. Ultra-low emission operation was achieved by combining Reactivity Controlled Compression Ignition (RCCI) combustion concept and the use of an advanced fuel mix featuring low carbon life cycle emissions. This fuel mix consists of hydrotreated vegetable oil (HVO) as a representative of high reactivity renewable fuel and a methane rich (greater than95% by volume) natural gas (MRNG) being a model fuel representing biomethane. Comprehensive mapping and identification of optimal operating regions of a small-swept volume engine was performed using an experimental setup comprising advanced real-time acquisition and control systems, developed specifically for robust RCCI engine operation. Combustion process was tailored to comply with limits of mechanical stresses of engine components, favourable thermodynamic parameters and ultra-low engine-out emissions. Combustion and thus engine operation was optimized based on a sensitivity analysis of the rate of exhaust gas recirculation (EGR) and energy share supplied by MRNG, which are the main influencing parameters to control NOx and soot emissions in RCCI combustion concept. Experimental results demonstrate that it is possible to simultaneously achieve ultra-low engine-out emissions of NOx, PM and PN with an innovative fuel mix resulting in a significant decrease in life-cycle carbon emissions compared to conventional fuels on an account of higher CO and THC emissions, what is a known disadvantage of RCCI concept.

Preparation of nanocomposite inner coating for natural gas pipeline

Natural gas is an important energy in China's production and life. In the environment of advocating low-carbon life, natural gas is an important part of low-carbon energy. But what does not match with the demand is that the development technology of natural gas in China is relatively backward, and the most prominent one is the gas leakage phenomenon of natural gas pipeline. The aging and corrosion of natural gas pipelines often lead to more serious safety problems. At present, the main solution is to coat the natural gas pipeline with anti-corrosion materials, but the effect is not satisfactory because of the uneven quality of the materials. In order to solve this problem, the preparation method of nanocomposite inner coating and its application in natural gas pipeline are studied in this paper. Firstly, this paper focuses on the application of nano materials and nano composite materials in the field of anti-corrosion coating, and analyzes the physical benefits of materials. It is considered that the protective mechanism of the nanocomposite anticorrosive coating is mainly through the adhesion of the coating to the metal substrate, the mechanical isolation of the corrosive medium, the formation of passive protective film and electrochemical protection on the metal surface. In order to further analyze the specific effect of nanocomposite coating, the corresponding experimental model is established in this paper. Many comparative experiments including tensile property analysis, particle size analysis, hydrophobic property and DSC were carried out. It can be seen from the experimental data that the nano composite anti-corrosion coating performs well in the experimental test and has good corrosion resistance, but both the tensile property and hydrophobicity are related to the degree of hard segment. According to the comprehensive analysis, the nanocomposite inner coating is suitable for the weather pipeline, which is recommended to be popularized.

The Application of Low-carbon City Theory in Urban Planning

<p>With the development of modern society, environmental pollution has become the most important problem in today’s society, especially the large amount of greenhouse gas emissions. It not only makes a variety of natural disasters occur frequently, but also seriously affects the safety of people’s lives and property. So it is necessary to take low-carbon life as the main design concept in urban planning so as to maintain the healthy development of the whole city and society. The paper further explains the application and development prospect of low-carbon life theory in cities by studying the current situation and problems of low-carbon city and discussing the relationship between spatial layout, transportation system and industrial structure in urban planning and low-carbon city theory.</p>

Research on Application of Energy-saving Technology Based on Computer Theory in Green Building Engineering

Low-carbon life has always been a green lifestyle that our country often advocates. As a symbolic color for energy saving, green is also designed as a symbolic representative color for energy saving and emission reduction. For now, energy conservation and emission reduction have become the subject of our sustainable economic and social research. With the continuous expansion of the energy consumption of buildings in various cities in our society, our natural environment has become even worse. However, the current housing construction is the most important goal for the prosperity of urbanization proposed by our country. On this basis, scholars put forward the main topic of green building. Especially under the current situation, the combination of green building and computer-related energy-saving and emission-reduction theories may be the most in line with the energy-saving standards of the advanced era[1-2].

The Relationship between Human Well-Being and Carbon Emissions

Governments around the world are actively exploring strategies to reduce carbon emissions and mitigate and adapt to the impacts of climate change. In addition to technological progress, promoting a transformation of residents’ behaviors to a low carbon mode is also a solution. Many people are concerned about how to reduce carbon emissions while ensuring human well-being. Starting from the comparative analysis of two main theories of human well-being, this paper sorted out existing well-being measurement methods from the perspectives of “top-down” and “bottom-up” and further sorted out research on the relationship between human well-being and energy carbon emissions. While “top-down” research is conducive to the layout of macro policies, “bottom-up” research can better help to promote the transformation of society to a low carbon life by estimating the energy consumption and carbon emissions contained in human needs. Current research discusses human well-being, human needs, energy use and carbon emissions, respectively, but they are not systematically integrated. Furthermore, this paper proposes a framework combining these aspects to analyze the relationship between human well-being and carbon emissions. In addition, this paper suggests future research directions.

Research on energy saving and emission reduction of urban transportation under the concept of low-carbon life

In response to the national concept of green and low carbon, the carbon emission analysis and peak prediction of transportation in 20 cities were carried out by using the carbon emission calculation model based on residents’ travel, and the quantitative effects of various improvement measures were evaluated. The results show that the urban transport structure and residents' travel distance are positively correlated with the urban carbon emission intensity, and the urban transport carbon emission in China will reach the peak around 2023. Accelerating the application of new energy, optimizing the urban transport structure, building a green transport system, and optimizing the urban transport line network all have good emission reduction effects.

On Low-carbon and Its Realization in Tourism

Global warming, caused by rising concentration of carbon dioxide and other greenhouse gases, has made great damage to the earth ecological environment. Low carbonization has become an inevitable trend of social development. Developing low-car bon economy, promoting low-carbon life and reducing carbon emissions have become the target and responsibility of all countries in the world. Tourism is a comprehensive human activity, a comprehensive experience of material civilization and spiritual civilization. Low-carbon tourism, as a new type, is a practical need to protect ecological environment and realize sustainable development. Starting from connotation of low-carbon as well as low-carbon tourism, the paper fully analyzes and expounds the necessity of developing low-carbon tourism. On this basis, it puts forward some concrete implementation paths for developing low-carbon tourism.

Research on the Factors Influencing the Reuse of Municipal Solid Waste

By the end of 2019, the coverage rate of residential communities in 46 cities, including municipalities directly under the Central Government, provincial capitals and cities separately listed in the state plan, has reached nearly 70%. The classification effect of household garbage is obvious, and it has become a new trend leading low-carbon life. However, it is undeniable that there are still many problems. To solve the problem, effective solutions should be adopted, such as multi-means auxiliary, increasing the intensity of administrative intervention, multi-channel publicity of the harm of non-classification of garbage, etc., so as to effectively improve the recycling of domestic garbage.

Cultivation of College Students’ Low-Carbon Consumption Behaviours based on Mobile Education: A Behavioural View

With the increasing emphasis on sustainable development, low-carbon education has become an important work in colleges, emphasizing the practice of low-carbon life and letting students know that low-carbon is a good living habit. Under this guidance, the ideological and political workers in colleges need to combine education with low-carbon background, cultivate and develop their life planning, direction and values, which is of great and long-term significance to improve the living environment quality, moral quality and social responsibility of college students. We attempt to use the theory of behavioural science, starting from professor Fogg’s behaviour model, with the convenience of digital tools in the internet era, focusing on the motivation improvement, difficulty reduction and trigger factors of low-carbon consumption of college students, to explore the path of using mobile education to do a good job in low-carbon education, hoping to provide innovative education methods and useful suggestions for ideological and political education in colleges.

Opportunities and Challenges of China’s Low-Carbon Economic Development in the New Era

In the context of the increasingly severe global greenhouse effect, the “14th Five-Year Plan” proposes to “promote green development and promote harmonious coexistence between man and nature”, which provides a new platform for the faster and better development of low-carbon countries. The low-carbon economy has entered a high-quality stage of China’s economic development in the new era, which is of great significance to the overall green transformation of China’s economic and social development. In order to assess the development level of China’s low-carbon economy, this paper estimates the carbon emissions and carbon emission intensity of energy consumption from 2008 to 2017 and applies the LMDI model to decompose the influencing factors of carbon emissions, analyzes the contribution rate of driving factors, and proposes energy saving, emission reduction and low carbon. Developmental countermeasures. The results show that economic growth and energy intensity are the biggest driving factors for promoting and suppressing carbon emissions, respectively. Measures are taken to improve energy structure, increase utilization efficiency, develop low-carbon industries, and promote low-carbon life.

Application of APP Technology to Promote Urban Low-Carbon Transportation

According to the Economist Intelligence Unit’s annual ranking of cities in the liveability index, bicycle penetration is one of the top indicators of liveability in the world. As one of the transportation tools of low-carbon life, bicycle can provide convenient travel tools and leisure activities, effectively reduce the burden of man-made development on the environment, meet the spirit of relaxation, is both pollution-free, economic, convenient and other advantages of transportation. The 21st century is an era of smart technology, and the rise of APP has changed people’s life pattern and the way of obtaining information. However, it has become a current trend to take people and environment as design considerations [1]. The successful bike APP can meet the needs of cyclists of different ethnic groups when riding, improve the convenience of cyclists, so as to attract more people to use bicycles and promote low-carbon and energy-saving lifestyle. Based on a literature review and a survey of 50 existing bicycle apps, this study concluded that the “seven major functional categories, two navigation modes and two interface aesthetic” of the apps were the most important factors affecting users’ preferences and download intention.

Health Professionals & Climate Change

Far from being laggards in mitigating climate change, health professionals should be leaders. They have scientific training, which means they are better able than many to understand the science that underpins climate change. They are more trusted than any other group, particularly after the bravery they have shown in countering the pandemic, and they interact with millions of citizens every day. Then the threat to health and the positive benefits to health from a low carbon life is probably the best way for citizens to be motivated to act on climate change. In many countries, health workers outnumber and other groups of employees, and the actions they and their families take as individuals can have a sizeable impact—and they provide leadership by example. Finally, health professionals have global networks, and mitigating climate change demands global action.

The mitigation strategies for bottom environment of service-oriented public building from a micro-scale perspective: A case study in China

Abstract Ecological civilization construction has risen to be a major social concern in China so that green construction and low-carbon life have been advocated. However, the construction of urban micro-scale green space environment might not align well with the national policies, forming public space without people involved in, which caused an energy consumption rise of interior service-oriented public buildings with high-volume people. Therefore, this paper is aimed to explore suitable spatial structure and configuration in outdoor bottom environment to improve the site efficiency through field measurement and numerical simulation. The results show that, first, multi-layered greening system (MLGS) proposed might activate urban micro-scale green space with the public involved in, and the mean radiation temperature (MRT) declines 1-3 °C. Second, the integration of colonnade (semi-open space) + courtyards is suitable for exterior space of service-oriented public buildings with high-volume pedestrians under hot-humid climatic condition. Third, the ability of microclimate adjustment is sunshade > evaporation > grass ground. Finally, compared to grass, water-holding pavement has obvious cooling effect (lower 12 °C under sunlight and 8 °C under membrane structure) on underlying surface temperature.

Research on the Utilization of Waste Resources of SMEs Based on Low Carbon Background

The core content of low-carbon is low-carbon economy and low-carbon life. Circular economy is a production mode of low-carbon economy. The utilization of waste resources of SMEs’ reverse logistics is a way to promote circular economy. The use of waste resources has the problems of low recycling rate of packaging materials, non-standard recycling of waste materials, high cost of return and transportation, and serious environmental pollution. In order to achieve sustainable development, implement the concept of a low-carbon economy and develop green logistics, it is necessary to take measures to improve the recycling rate of packaging materials, improve corporate social responsibility, reduce the cost of return logistics, and prevent environmental pollution to promote the improvement of reverse logistics for SMEs Utilization of waste resources.

基于不同需求层次的中国城镇居民消费隐含碳排放时空演变机制

PDF HTML阅读 XML下载 导出引用 引用提醒 基于不同需求层次的中国城镇居民消费隐含碳排放时空演变机制 DOI: 10.5846/stxb201812242794 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然科学基金项目（41971248，41571513）；国家自然科学基金重点项目（41430635）；国家社会科学基金项目（18BRK031） Spatio-temporal evolution and driving mechanism of per capita indirect carbon emissions based on different demand levels from urban residents' consumption in China Author: Affiliation: Fund Project: National Natural Science Foundation of China,No.41971248, 41571513; Major Program of National Natural Science Foundation,No. 41430635；National Social Science Foundation of China,No. 18BRK031 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:正确认识不同需求水平下人均隐含碳排放量的变化，对实现低碳经济及低碳生活具有重要的参考价值。基于居民消费需求层次建立不同需求层次与隐含碳排放的对应关系，将人均隐含碳排放分解为生存型、发展型、奢侈型三类，并运用投入产出法进行核算，在对不同需求层次人均隐含碳排放的空间格局演变分析的基础上采用空间面板方法对其驱动机制进行甄别。结果显示，在全国层面，各需求层次人均隐含碳排放均呈现上升趋势，空间分布不均衡性主要体现在南北差异上，北部地区始终是各需求层次人均隐含碳排放的主要空间载体，其中多数省分生存型人均隐含碳排放上升势头较强，发展型和奢侈型的高值区在省份数量上分别呈现先减后增与逐渐增加的变化趋势；不同需求层次人均隐含碳排放水平相似的地区在空间上呈集聚分布，具有较强的"马太效应"；空间面板模型结果显示技术减排是降低不同需求层次人均隐含碳排放的重要举措，而人口规模在各需求层次上的负向减排作用远小于正向的人口结构效应，宏观经济因素主要表现为增排效应，而居民消费因素的作用通道存在差异。此外，部分因素在各需求层次上存在显著空间外溢效应，应重视区域间的横向联动减排效应，做好隐含碳减排的统筹协调工作。 Abstract:There is an important reference value for realization of low carbon economy and low carbon life to understand the change of per capita indirect carbon emissions based on different demand levels. Based on the demand-level of residents' consumption, this paper established the corresponding relationship between different demand levels of per capita indirect carbon emissions. We decomposed per capita indirect carbon emissions into three types including survival type, developmental type and luxurious type, and estimated them by the input output method. The temporal and spatial evolution of per capita indirect carbon emissions in different demand levels were studied and the driving mechanisms were identified by the spatial panel method. The corresponding emission reduction measures were also proposed. The results indicate that (1) at the national level, there is an upward trend in per capita indirect carbon emissions in different demand levels. The spatial imbalance is mainly reflected in the difference between the north and the south. The northern region is always the main spatial carrier of them. In most provinces, per capita indirect carbon emissions of the survival type have a strong upward momentum. The high value areas of developmental type and luxurious type have a trend of decreasing first, then increasing, and increasing gradually in the number of provinces separately. (2) The global Moran's I shows that there is a significant spatial autocorrelation of the per capita indirect carbon emissions in different demand levels in 30 provinces of China. There is a strong "Matthew effect". (3) The results of spatial panel regression show that the technological progress is a key factor to achieve indirect carbon emissions' reduction. The negative emission reduction effect of population size of each demand level is much less than that of the positive structure effect. Macroeconomic factors have increasing emission effects, and the influence of consumption factors is different. In addition, some factors have significant spatial spillover effects on each level of demand. Therefore, we should pay attention to the effect of linkage emission reduction between regions, and do a good job of coordination in indirect carbon emission reduction. 参考文献 相似文献 引证文献

Research on the Sustainable Development of Traditional Dwellings

Balustrade architecture is mainly distributed in south and southwest China and southeast Asia. Dai dwellings in Yunnan, China, are a typical balustrade dwelling. Traditional dwellings of Dai contain the concepts of architecture, physics, ecology, and sustainability in space planning, building materials, and construction methods. At a time when the global climate environment is deteriorating and energy saving, emission reduction, and low-carbon life are advocated, Dai dwellings should be studied from the perspective of sustainable development, from which we can draw lessons and inspiration. This paper investigated plane layout, space structure, and materials of Dai dwellings, and found that traditional Dai dwellings are wooden frame structures with wood and bamboo; the roof has two layers and long overhang eaves, which is good for diverting rain water, shading and shelter, and integrating the building with the natural landscape as well. Analyzing the spatial characteristics and problems of Dai dwellings at present, discussing the sustainable development ideas of Dai dwellings, constructing Dai dwellings with low energy consumption and high quality of life, combining traditional culture with ecological technology, and designing a sustainable new green living model are beneficial to the inheritance of Dai residence culture.

The Influence of Alipay Ant Forest on Environmental Protection Consciousness of College Students in Guangzhou

<p>Alipay ant forest uses Internet social media and sensor positioning technology to realize the organic combination of online scene and offline scene. Users who use Alipay for payment and settlement business can convert offline physical low-carbon consumption behavior into online forest tree-planting public welfare activities. Ant forest has promoted the low carbon concept in the form of games and aroused the public's enthusiasm to participate in environmental protection activities. Therefore, this article takes the college students in Guangzhou as investigation object, through the analysis of Alipay ants forest to enhance college students' environmental awareness and the cognition of low carbon concept among college students, to ensure that students in abiding by the rules of Alipay ants forest game process. It can promote the environmental protection low carbon life habit, and set up the idea of low carbon consumption, so as to realize harmonious coexistence between man and nature.</p>