bluuebunny/crossref_metadata_2025 huggingface dataset:
School Attachment Inventory in Indian Context for Senior Secondary School Students: Fostering Student Mental Health and Well Being
Authors: Guha Sampurna , Beri Nimisha
Published: August 2024

The presence of secure school attachment plays a pivotal role for nurturing student well-being, thereby promoting academic engagement and positive mental health outcomes, especially among adolescents. The present study aims to investigate the psychometric properties of the School Attachment Inventory (SCAI) adopted from People in My Life Scale (PIML) by Ridenour, Greenberg, and Cook (2006) through the utilization of Exploratory and Confirmatory Factor Analysis methodologies. The standardization process involved 250 students (comprising both male and female participants), selected using multistage stratified random sampling technique. These participants were enrolled in class XI across coeducational schools (both aided and unaided) in Delhi, operating in the morning session, identified using computer generated random numbers from the list of schools obtained from the Directorate of Education. Factor analysis helped to identify and confirm a three-factor structure comprising eleven-items. Satisfactory scores in terms of Average Variance Extracted and Cronbach's alpha indicates the robust internal consistency of the inventory thereby serving as a valuable tool for measuring school attachment within the Indian educational setting, facilitating interventions aimed at fortifying students' connection and bolstering their overall mental health.
Navigating the Digital Landscape: A Study on Management Students’ Reading Behaviour
Authors: Chande Ajay , Sharma Anjali , Gupta Sushant , Verma Rajesh
Published: August 2024

The digital age is reshaping student reading habits, especially in management education, focusing on accessibility, affordability, technology, and mindset. This study examines how digital learning resources affect management students' reading habits, challenging the notion that students should only read textbooks. Despite the widespread availability of online reading materials, only some studies have explored how management students' reading habits are changing. This study used a mixed research design, starting with qualitative interviews with 20 management students to identify themes, which were then used to develop and validate a questionnaire with 20 experts. The questionnaire was then administered to 200 management students from public and private universities in Punjab, India. The findings identified four key factors influencing management students' changing textbook reading habits: convenience, price, technology, and attitude. Regression analysis indicated that attitude was the most significant predictor of changed reading habits, suggesting that promoting a positive attitude towards textbook reading could help counter the impact of digitalization. The study concludes with recommendations for publishers to update content regularly, offer online resources, and consider a hybrid publishing model combining free and premium content to adapt to the digital age and promote inclusive education, aligning with Sustainable Development Goal 4.
Synthesis and SAR of morpholine and its derivatives: A review update
Authors: Jain Amrita , Kumar Sahu Sanjeev
Published: August 2024

Morpholine is a stretchy moiety, a special pharmacophore and an amazing heterocyclic compound with wide scopes of pharmacological exercises because of various pharmacological of activity. The capacity of morpholine to upgrade the power of the particle through sub-atomic collaborations with the objective protein (kinases) or to modify the pharmacokinetic properties impelled restorative scientific experts and specialists to orchestrate morpholine ring by the proficient ways and to fuse this moiety to create different lead compound with assorted therapeutic activity. Morpholine is an organic substance compound having a six-membered ring containing two heteroatom nitrogen(N) and oxygen(O), considered as the significant core in restorative and medicinal chemistry. The current study essentially centered around talking about the most encouraging synthesis leads containing compound morpholine ring alongside structure-activity relationship (SAR) to uncover the dynamic pharmacophores responsible for anticancer, mitigating, antiviral, anticonvulsant, antihyperlipidemic, cell reinforcement, antimicrobial and antileishmanial action. This audit will give the essential information base to the medicinal chemistry in rolling out vital basic improvements in structuring morpholine subsidiaries.
Phytochemical screening, physochemical and microscopical evaluation of Hygrophila difformis aerial parts
Authors: Samanta Krishanu , Sahu Sanjeev K. , Vaidya Ankur
Published: August 2024

Herbal plants are marvelous source of traditional & modern medicine, useful for primary health care system globally. Herbal plants are also massive sources of neutraceuticals prevent the different disease and maintain healthy life style. The study of diseases and their treatment are important part of our ancient time worldwide. The awareness of medicinal plants must have been accumulated in the course of many centuries. Herbal medicine prepare different part of plant are used. Hygrophila difformis Blume is well known as water wisteria. It is tropical aquarium plant used as environmental ornaments. It is found in different part of India and Indian subcontinent including Bangladesh, Bhutan and Nepal. The plant is used as coagulant by tribal people of East Medinipur, dist West Bengal, India. The aerial part of the plant showed good anti-oxidant property, anthelmintic activity. Also ethanolic extract of aerial parts of the plant also showed CNS depressant activity. The main aims of this research are Preliminary physico– phytochemical & phytocognostical evaluation of the aerial parts of Hygrophila difformis Blume. The current study deals with the characterization of morphological features, determination of physical parameter such as the total ash value, water soluble ash, acid insoluble ash value were 14%, 5.25%, 6.81% respectively. Loss of drying was 13%, foaming index < 100, swelling index were 0.3cm, the percent yield for petroleum ether 3.29%, cyclo hexane 2.57% chloroform 1.99%, ethanol 9.15%, and aqueous 5.46%. Also determine the presence or absence of phytochemicals such as glycosides, tannins, steroids, flavonoids and saponins.
Effect of coconut oil in water vapor permeation property of pigeon pea starch based packaging film
Authors: Lodhi Ruchi
Published: August 2024

In this work plain and coconut oil loaded pigeon pea starch based films were made by microwave induced gelatinization process, and water vapor permeation property of plain pigeon pea starch based film and coconut oil loaded pigeon pea starch based film was studied at 18,25,32oC. It was seen that coconut oil loaded pigeon pea starch based film showed low values of permeance, permeability and water vapor transmission rate in comparision to plain pigeon pea starch based film, Films formed can be used for packaging purpose.
Comprehensive assessment of air quality dynamics in Delhi: A tri-phased analysis spanning pre, during, and post-lockdown periods
Authors: Popli Satvik , Yadav Esha , Singh Aastha , Singh Geeta
Published: August 2024

To mitigate the spread of the global COVID-19 pandemic, various regions, including India, implemented stringent measures such as nationwide lockdowns to curb the spread of the virus. The air quality dynamics during the COVID-19 lockdown period revealed diverse trends across various pollutants all over the world. This study explores the impact of these lockdowns on air quality in Delhi, one of India’s megacities, across distinct phases: pre-lockdown, during lockdown, and post-lockdown periods. PM 10 was observed to show a substantial decline in concentration, particularly in April 2020, serving as a testament to the immediate effectiveness of implementing lockdown measures to control particulate matter concentrations. However, these levels returned to their previous peak in subsequent years post lockdown. PM 2.5 followed a similar pattern, experiencing an initial decline during the lockdown, but as industries and factories resumed their activities post June 2020, the levels shot up back to their original baseline, highlighting the transient nature of low PM concentrations. Other pollutants like Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), and Carbon Monoxide (CO) levels showed varying degrees of mild to steep decline during the lockdown, but they too returned to their original concentrations as few months after the lockdown was lifted. There was, contrary to expectations, an increase in ozone (O3) concentrations after the implementation of lockdown, challenging our assumptions. Spatial mapping was done to observe the variation of concentration in different tehsils of Delhi.
Mechanical Characterization and Predictive Analysis of Flax Fiber/PLA Honeycomb Sandwich Structures in FDM Additive Manufacturing
Authors: Easwaramoorthi M. , Giridharan A. , Nandhakumar K. , Pradeep E. , Rangith G.
Published: August 2024

The improved recyclability, renewability, and biodegradability of natural fibre composites have made them a hot commodity in recent years. Fused Deposition Modelling (FDM) is extensively employed in additive manufacturing technology that can produce simple and complex structures. Using the FDM procedure, this research created honeycomb sandwich structures out of flax and PLA and studied their mechanical behaviour. At first, samples of 3D-printed composites and flax fiber/PLA filaments were tested under tension with infill angles of 0°/60°, -30°/+30°. After the honeycomb cores were made, researchers examined their mechanical behaviour in both the top and side fields. Core and skin components were then used to create honeycomb sandwich constructions. The mechanical behaviour was characterised by conducting compressive test and Flexural test. With know side of the material cell wall characteristics, analytical analysis was also used to forecast the honeycomb sandwich structure’s mechanical properties.
Enhancing Mechanical Properties of Hybrid Natural Fiber Reinforced Epoxy Composites with Acacia Mangium Fiber and Teak Wood Powder
Authors: Surya P. , Ashok Kumar B. , Magibalan S.
Published: August 2024

This study makes use of inexpensive natural fibers like Acacia Mangium fiber and Teak wood powder. A unique hybrid composite specimen was made by combining epoxy as the matrix material (70%) and hardener as the reinforcement material (30%). The reinforcement material was NaOH chemically treated Acacia Mangium fiber and to further improve the properties, teak wood powder was added as a filler. The hand-lay method was used to make the composite material and made three specimen combinations with different ratios of reinforced material: 6%, 12%,18%, and 24%. In accordance with ASTM standards, the prepared specimen has undergone evaluation of its mechanical properties, including tensile, hardness compression, flexural and impact tests. Treated fiber samples demonstrate higher strength than untreated fiber composites, as shown by the examination of mechanical characteristics. The specimen has a hardness of 59.6Hv, an impact strength of 5.3 J/mm, a compressive strength of 103.25 MPa, a flexural strength of 79.97 MPa, and a highest tensile strength of 80.25 MPa. Specimens that have undergone chemical treatment have a greater water absorption percentage compared to untreated specimens. Vehicles, planes, buildings, athletics and even the home can all benefit from this innovative hybrid composite material.
Short Review Fuel Efficiency for The Ship Energy Management Plan
Authors: Budiyanto Muhammad Arif , Dawangi Ivan Dewanda , Riadi Achmad , Muzhoffar Dimas Angga Fakhri
Published: August 2024

This paper examines a short review of the literature regarding fuel-efficient operations that can be applied to the development of environmentally friendly shipping both on ships and in ports. The study was conducted using a literature review method, completed through an iterative cycle of defining appropriate search keywords, searching the literature, and ending the analysis. This research stage starts with selecting the topic to be reviewed, tracking and selecting relevant articles, and analyzing and synthesizing the literature. The results of the three types of methods that have been studied, namely ship operator skills training, voyage optimization, and cold ironing, have obtained factors that influence each technique as well as developments that can be carried out in the future and applied to Indonesian ports as well as possible benefits of implementation in medium to small sized ports.
Barriers for adoption of green hydrogen in Indian transportation sector: A fuzzy ISM approach
Authors: Dixit Arun C. , B C Ashok , B Harshavardhan , S A Mohan Krishna
Published: August 2024

The adoption of green hydrogen in India’s transportation sector represents a promising solution to the country’s energy challenges. However, various barriers hinder its large-scale implementation. This paper employs a fuzzy Interpretive Structural Modeling (ISM) approach to identify and analyze the barriers affecting green hydrogen adoption. The Structural Self-Interaction Matrix (SSIM) and Initial Fuzzy Reachability Matrix (IFRM) were used to assess direct relationships between barriers, while level partitioning and the final fuzzy reachability matrix provided a hierarchical structure. The fuzzy digraph visually mapped the relationships, and a cluster of barriers diagram identified clusters based on driving power and dependence. Key barriers, such as “Technological Immaturity,” “Inadequate Regulatory Frameworks,” and “Policy Inconsistencies,” were identified as foundational challenges. Resolving these barriers will yield substantial positive effects across the network, streamlining progress in adopting green hydrogen in India’s transportation sector. The analysis offers a strategic pathway for policymakers and stakeholders to prioritize interventions for this clean energy technology.
Engineering the Concrete to Achieve the Mechanical Properties by Replacing Demolished Concrete Wastes as Aggregates and adding Steel Fibers as Micro-Reinforcements
Authors: M Saravanan , R Nirmala
Published: August 2024

Even for the construction of conventional buildings, materials for construction expense is unnecessarily rising, and this is becoming a major factor impacting the global housing market. This has made research into the economy of building materials necessary. In this regard, concretes have been created that partially substitute conventional aggregates with Demolished Concrete Waste (DCW) as coarse and fine aggregates. By bridging concrete cracks, the steel fibers’ characteristic helps to increase the inherent tensile strength of the material. For the purposes of this study, three distinct combinations of DCW content replacement were created using M25 grade concrete: 50% of Aggregate obtained through recycling process (RCA) + 20% Recycled Fine Aggregate (RFA), 50% RCA + 10% RFA, and 50% RCA. Additionally, 1% steel fiber reinforcements were added to each combination. To ascertain the required mechanical properties, concrete specimens in the shape of a “cube, cylinder, & prism” were cast and tested after seven, fourteen, and twenty eight days of curing. The mechanical properties of the newly developed concrete included splitting tensile strength, flexural strength, and compressive strength. These properties were evaluated and compared to those of traditional concrete. According to test results, the newly developed concrete produced strengths that were on par with those of conventional concrete.
The use of BIM and TRIZ in the development of organizational and technological models
Authors: Ksenia Polosina
Published: August 2024

Information modeling currently plays an important role in technological processes in the design of design and working documentation and the performance of construction work at the facility at all stages of the life cycle of the facility. The aim of the study is to apply building information modeling (BIM) and the theory of inventive problem solving (TRIZ), in the form of the most rational organizational and technological solutions in construction, which can lead to increased project . The object of research is the development of organizational and technological models for the performance of construction and installation works. The subject of research is organizational and technological parameters and factors influencing the process of applying building information modeling (BIM) and the theory of inventive problem solving (TRIZ). Research methods: the theoretical, methodological and informational basis of the research is the applied developments of domestic and foreign experience in the field of project management and design automation in information modeling. The variants of application of methods of searching for new solutions and the main terms used in the theory of solving inventive tasks of TRIZ in the construction sector are considered. The tools and typical techniques of TRIZ are given: analysis, standards, an algorithm for solving inventive tasks, a diversionary approach to solving research problems.
Investigate the influence of Aspect Ratio of Copper Fiber on the improvement of pure gypsum’s compressive strength
Authors: Jaafar Esraa Kamal , Faris Hamid Abdulmahdi , Saeed Abbas Firas , AL-Ridha Ahmed S.D.
Published: August 2024

Current study describes copper fiber as a cut fiber with a length of 10 mm from construction waste, focusing on its potency in pure gypsum. The aspect ratio (L/D) for copper fiber mixtures is 12 and 20.8, with the first being for a diameter of 0.83 mm and 0.48 mm for the second diameter, with a volume ratio equal to 0.4%. Mixtures are organized into two groups, with the first group having a 0.6 water/gypsum ratio and the second group having a ratio of 0.5. Each of the ratios currently used includes three mixtures, the first of which is a reference mixture without copper fibers, and the second and third mixtures contain copper fibers of different diameters, both individually. The current study shows that the importance of compressive strength rises by reducing the W/G ratio for the three mixtures used and the importance of adding copper fibers to pure gypsum, which leads to an aspect ratio increases by reducing the copper fibers diameter which may directly effective to rise compressive strength for pure gypsum mixture containing copper fiber.
Influence of GGBS and Mono Steel Fiber on Strength Characteristics of Self-Compacting Concrete
Authors: Revanth S. , Vivek S.S. , Fernando P.A. Edwin , Karthikeyan B. , Jaishankar P. , Kanchidurai S. , Rathinakumar V. , Rajakumar U. , Aravind S.
Published: August 2024

In recent scenarios, self-compacting concrete (SCC) has played a vital role in the construction industry. In the fresh state, SCC has flow ability, passing ability, and filling ability. SCC also had better strength and durability properties. The addition of fiber content in SCC could improve the tensile properties. The present research aims to investigate the strength aspects of SCC using a combination of steel fibers with mineral admixture namely Ground Granulated Blast Furnace Slag (GGBS) in constant 30%. The fresh properties of SCC were highly influenced by GGBS since it is used as a powder content/ fines. However, the addition of steel fibers (STF) from 0% to 2% with an increment of 0.5% has decreased the flowability property in SCC. From the obtained results, the addition of 2% STF along with 30% GGBS has improved the strength when compared to the control mix of the same grade and also resisted the crack propagations.
Experimental analysis of moisture protection of buildings
Authors: Tulakov Elmurad , Inoyatov Dilovar , Kurbonov Alijon , Sirojiddinov Shavkat , Abdullayeva Sohiba , Matyokubov Bobur , Kulmirzayev Jakhongir
Published: August 2024

It is known that capillary moisture enters the wall layers through the foundation and plinth walls of buildings in operation and affects their technical condition. The appearance of capillary moisture and its penetration into the layers of walls - the quality of construction work during the construction of buildings, service life (time since construction), air temperature and humidity, ground conditions of the construction site, increase in ground soil moisture, dynamic forces and earthquake effects, caused by the aggressive effects of the environment and others. The main goal of assessing the technical condition of buildings is to establish a comfortable and optimal regime during their use. The problem of rational technical operation of buildings is mainly aimed at keeping them in a satisfactory technical condition with low operating costs. This article presents an analysis of experiments conducted to protect buildings from underground moisture.
Embracing Sustainability - A Journey with Municipal Solid Waste Ash in Brick Production
Authors: Kiruthika L. , Nathina Thamarai Selvi S. , Premalatha P.V. , Santhosh Kumar E. , Kevin Jack J.
Published: August 2024

This research investigates the potential of incorporating municipal solid waste (MSW) ash into brick production to mitigate challenges arising from urbanization and waste disposal. MSW ash was substituted for fly ash at varying proportions (5%, 10%, 15%, 20%) in this experimental study. Analytical techniques such as SEM analysis, XRD, and EDAX were employed to assess the characteristics of MSW ash. Various experimental tests, including compressive strength, water absorption, soundness, leaching, and efflorescence tests, were conducted to evaluate the suitability of MSW ash as a raw material in brick manufacturing. The compressive strength test revealed a value of 12.2 MPa after 15 days of curing, without compromising the strength of conventional bricks, while water absorption remained below 20%, indicating an acceptable level. Although leaching tests detected trace amounts of heavy metals in MSW bricks, overall, the incorporation of MSW ash in brick production presents a promising solution to MSW waste disposal challenges, offering a sustainable approach to urban waste management.
The environmental aspect as an important part of the digital transformation in metallurgy
Authors: Gromova Elizaveta A.
Published: August 2024

The fourth industrial revolution is the continuous automation of traditional production processes and production practices using modern intelligent technologies. In the context of the fourth industrial revolution development the digital transformation of the economy is a prerequisite for the possibility of competing at the global level. Digital transformation is an important step for the Russian economy. Metallurgy is traditionally considered a conservative industry, but it has a great digital potential. With industry in mind, the environmental aspect plays a significant role. Thus, the goal of the study is to analyze the experience of digital transformation of a metallurgical enterprise in the context of the environmental agenda. NLMK Group is a vertically integrated metallurgical company that implements the principles of agile manufacturing. It pays great attention to the introduction of modern digital technologies along with the environmental component. NLMK is currently ranked first in the ESG RAEX rating.
Evaluation of Mechanical Characteristics of concrete incorporating Fly Ash and Rice Husk Ash as sustainable alternatives
Authors: Mounika Ganta , Priyanka Munukuntla , Rajasri Yama , Swarnendar Reddy Tirupally , Srinanda Sangishetti , Satvik Reddy Gongalla
Published: August 2024

The incorporation of industrial and agro waste materials in concrete production has gained significant attention in recent years due to their potential to enhance sustainability and reduce environmental impact. This study presents an evaluation of the mechanical properties of M25 grade concrete combined with Fly Ash (FA) and Rice Husk Ash (RHA) as sustainable alternatives to conventional cement. The experimental investigation focuses on a fixed 2.5% substitution of FA while varying the replacement level of cement with RHA from 0% to 2.5% at a constant water/cement ratio of 0.45. The mechanical properties assessed include compressive, tensile, flexural strengths, and workability characteristics at the age of 7 and 28 days. The experimental results show a highest compressive strength of 47.55 MPa and split tensile strength of 3.04 MPa at 1.5% dosage of RHA, and a peak flexural strength of 11.08 MPa at 2.5% substitution of RHA at 28 days. UPVT results indicate that the quality of concrete is enhanced with the improved substitution of RHA.
Assessment of Mechanical Properties of Concrete with Substitution of River Sand by Robo Sand and Incorporation of Glass Powder
Authors: Mounika Ganta , Nikhil Aarlapudi , Rasagna Aleti , Sai Sumanoj Siddabathuni , Sai Manasa Ksumala , Patil Gurubai M.
Published: August 2024

The scarcity of natural resources and the environmental impact of traditional construction materials have led to the exploration of alternative materials in the construction industry. Robo Sand (RB), derived from crushed rocks, and Glass Powder (GP), a byproduct of the glass manufacturing process, are two such alternatives that have gained attention due to their potential to mitigate environmental concerns and improve material properties. This study investigates the mechanical properties of concrete by substituting river sand partially with RB and incorporating varying percentages of GP. The research focuses on a fixed 40% substitution rate of RB while varying the replacement level of river sand with glass powder from 0% to 25% at a constant water/cement ratio of 0.45. The mechanical properties assessed include compressive strength, tensile strength, flexural strength, and workability characteristics at the age of 7 and 28 days. The M25 grade of concrete mixtures are meticulously designed and tested to evaluate the impact of GP content on the performance of the concrete matrix. The experimental results show a highest compressive strength of 47.48 MPa and split tensile strength of 2.85 MPa at 15% dosage of GP, and a highest flexural strength of 11.08 MPa at 20% substitution of GP at 28 days. UPVT results indicate that the quality of concrete is enhanced with the improved substitution of GP.
Optimization of Electrocoagulation-Flocculation for Chlorella Vulgaris Biomass Recovery Using Response Surface Methodology
Authors: Duong Do Vinh , Trung Le Duc , Tran Cong-Sac , Tan Phan Thanh , Huynh Ngoc-Han T. , Hieu Nguyen Minh , Tran Thanh
Published: August 2024

The issue of how to economically harvest and recover algal biomass has always been of concern to green wastewater treatment systems utilizing microalgal technology. This study explores the efficiency of biomass recovery from Chlorella Vulgaris using an electrocoagulation-flocculation method, aiming to optimize the environmentally friendly harvesting of algal biomass. Utilizing a response surface methodology (RSM) with a central composite design (CCD), the research investigates the impact of pH, current intensity, reaction time, and salinity on recovery efficiency. Optimal conditions were identified as a pH of 6.5, current intensity of 1.5A, reaction time of 20 minutes, and a salinity of 15ppt, achieving an optimal recovery efficiency of 84.36%. The findings underscore the significant influence of pH, where deviations from the optimum value substantially reduced efficiency. This study confirms that electrocoagulation is a viable and effective method for enhancing Chlorella Vulgaris biomass recovery, offering a sustainable alternative to traditional chemical flocculation methods by reducing dependency on chemical coagulants and minimizing production costs. The results provide a solid scientific basis for future enhancements in the sustainable industrial application of algae, promoting environmental protection and economic viability.
Evaluating the Effectiveness of Titanium Dioxide Based Grouting Blended with Epoxy Coating for Retrofitting of Damaged Concrete Structures
Authors: AK Roopa , Dharwad Sadiq , Hunashyal A.M. , Ambale Dhananjay
Published: August 2024

The retrofitting of damaged concrete structures is crucial for maintaining their structural integrity and extending their service life. The present study is carried out to evaluate the effectiveness of titanium dioxide (TiO2) based grouting blended with epoxy coating for retrofitting of damaged concrete structures. TiO2 grouting is used to fill cracks and voids in the concrete, while the epoxy coating is applied over the surface to provide an additional protective layer. The effectiveness of this retrofitting approach is assessed through a series of tests, including compressive strength tests subjected to high temperature, chloride attack, and scanning electron microscopy (SEM) analysis. The results show that the TiO2 based grouting improves the strength and durability of the concrete, while the epoxy coating provides a barrier against chloride penetration and other environmental factors. Overall, the combination of TiO2 grouting and epoxy coating proves to be an effective retrofitting solution for damaged concrete structures, offering improved strength, durability, and resistance to environmental degradation. This study highlights the potential of TiO2 based materials in enhancing the performance of concrete structures and extending their service life.
Study on the influence mechanism of gangue mixing rate and top coal recovery rate under different lumpiness conditions
Authors: Liu Xueyang , Wei Weijie , Ma Shijie , Zou Chenglong , Yang Yongheng
Published: August 2024

In this paper, for the S5207 working face of the 3# coal seam of Yuwu Coal Industry, numerical calculations are used to simulate the initial coal discharge process under different top coal lumpiness conditions, and the variation law of top coal recovery rate and gangue mixing rate, the optimal mixing rate, the morphological characteristics of the top coal discharge body and the coal-rock interface are studied. The results show that the smaller the top coal lump, the higher the recovery rate of top coal, and the increase of the gangue mixing rate and the recovery rate of the top coal increase, which increases faster in the range of 3%-9% of the gangue mixing rate. The analysis determines the optimal mixing rate under different lumpiness conditions. The smaller the lumpiness, the more round the discharge body is, and the larger the volume. In the middle and late stages of coal discharge, with the increase of the mixing rate, the development degree of the discharge body level increased. There are two continuous curves of curvature at the interface of coal and rock, and the lump degree and gangue mixing rate are the main controlling factors affecting its morphology and slope. This study provides theoretical guidance for the actual intelligent fully integrated mining.
Horizontal comparison of the development of hydrogen energy industry chain in China, the United States and Japan
Authors: Xiao Bojun
Published: August 2024

With more global warming and air pollution, building a low-carbon and sustainable industry and economy urgent to be resolved. In that case, hydrogen energy has entered people’s field of vision. With decades of implementation of green hydrogen technologies, some pilot and industry-scale projects are making enormous progress, and industrialization and commercialization of hydrogen energy seem possible to achieve in near future. This article would analyse hydrogen energy developments from production, storage & delivery, and application aspects in China, the United States, and Japan, which are the world’s top three countries of hydrogen energy production and development1. Besides, comparisons of advantages and disadvantages of hydrogen energy developments are carried out within these three countries.
Analysis on standardization path of low carbon operation of the wastewater treatment plants
Authors: Zhang Xiaoxin , Zhang Sinan , Huang Jin
Published: August 2024

In the comprehensive analysis of municipal wastewater treatment plants low carbon operation, on the basis of the existing technical route, through combing summing up existing national, industry, local and community standards, parse the wastewater treatment plant with standardized approach to implement low carbon operation, support the wastewater treatment plants to speed up the low carbon transition, prompted the wastewater treatment industry to the national "dual carbon" major strategic goal to make significant contributions.
Study on the construction of auxiliary service market under largescale new energy access
Authors: Li Tiantian , Wang Jiangbo , Yin Shuo , Sun Yongjian , Lu Yao
Published: August 2024

At present, all countries are accelerating the construction of a new type of power system based on renewable energy, and the random volatility and intermittency of new energy resources, and the low resistance and weak support of new energy power generation and grid-connected equipment exist objectively. In order to maintain the safe and stable operation of the power system, the demand for auxiliary services such as frequency regulation, peak regulation, voltage regulation, standby and black start is increasing. Therefore, with the increase of new energy penetration rate, it is necessary to explore the impact of the increase of new energy penetration rate on the cost of auxiliary services. Combined with the background that the foreign power market has been running for a long time, auxiliary service varieties are more abundant, and the new energy penetration rate of some countries or TSOs has reached a higher level, the author has conducted a study on the impact of the increase in the penetration rate of new energy on the cost of auxiliary services in foreign countries, explored the impact of the increase in the penetration rate of new energy on the cost of auxiliary services, and provided reference and guidance for the classification of auxiliary service products, the design of pricing mechanism and other key issues of the construction of the auxiliary service market in China. The study explores the impact of the increase of new energy penetration on the cost of auxiliary services, and provides reference and guidance for the division of auxiliary service products, design of pricing mechanism and other key issues of auxiliary service market in China.
Decoupling Analysis between agricultural water resource utilization and grain yield
Authors: Tao Aixiang , Hang Chuanli , Chen Peiyan
Published: August 2024

China is building a resource-saving and environmentally friendly society. The conservation and utilization of water resources is an important aspect. The total amount of agricultural water consumption accounts for about 60% of the total water consumption. Realizing the conservation of agricultural water resources is of great significance for improving the overall water use efficiency in China. This article uses decoupling theory to analyze the relationship between grain yield and agricultural water use in China. The research results indicate that China's grain yield and total agricultural water use are generally in a decoupling state. The next step is to make efforts in the following areas: improving agricultural cultivation technology, developing water-saving varieties, expanding grain varieties, expanding water sources, and strengthening personnel training.
Research and analysis of green environmental impact based on new energy storage technology
Authors: Liao Shuang , Zhang Haoqin , Han Yibo , Cai Jie , Ma Li
Published: August 2024

Energy storage is a key technology of the energy revolution, an important support to achieve the goal of carbon peak carbon neutral, but also an important field to give birth to the new domestic energy industry and seize the new international strategic high ground. At present, China's energy storage industry as a whole is in the transition stage from the early stage of commercialisation to large-scale development, and is developing rapidly in terms of technology research and development, demonstration projects, business models and policy systems. In 2021, the author had reviewed the research progress of major energy storage technologies in China in that year, which received great attention from academia and industry.In 2022, with the in-depth implementation of the national dual-carbon strategy and the energy revolution, the development of China's energy storage technology and industry has gained strong momentum, with the following: first, the research on energy storage technology has continued to be active; second, the market size of the energy storage market has been growing rapidly; third, the energy storage industry chain has been becoming more mature; fourth, the policy support for energy storage has increased; and fifth, the heat of the capital market has been gradually increasing. Energy storage policy support increased; Fifth, the capital market heat gradually increased. This paper analyses and researches the development principle of green environment based on the technical analysis of new energy, and makes a certain contribution to the research of crosscutting fields.
Photon Energy and Natural Philosophy
Authors: Yuan Daocheng
Published: August 2024

Understanding photon energy is a fundamental scientific issue for obtaining clean and sustainable energy. The understanding of the properties of light and photon energy is an important issue in physics/natural philosophy, and it is also a problem of pursuing cognitive certainty of nature. Comparing the deterministic differences between consciousness and experience, summarizing and analyzing the three causes of thinking, constructing the logical relationship between natural philosophy, philosophical epistemology, and certainty, a four element cognitive model of natural philosophy was established. The model answers the source of certainty of axiomatic knowledge, deepens the understanding of Newton's natural philosophy method of "induction", and also answers the validity of physics and mathematics, as well as their roles and functions in understanding nature. The model clearly reveals the logical relationship between time and space. Based on Newton's methodology of natural philosophy, the logical connection between natural laws and causal thinking and the limitations of falsificationism are expounded, and the traceability of theory (axiom) and three traceability conditions are proposed. A new inductive cognition of "photons as electric magnetic particles" was proposed, and the micro effects and influences of photon kinetic energy are discussed by inductive method. The approach to obtaining infinite clean energy (photon kinetic energy) has been theoretically elaborated.
Differences in Ageing Rates of Different Town Gas Polyethylene Pipes under Pressure
Authors: Sun Xingze , Lin Nan , Sun Ming , Cui Wei , Shi Chuntao , Chen Shan
Published: August 2024

Due to its advantages of good toughness, corrosion resistance, low cost and constructability, etc., polyethylene (PE) pipeline is widely used in natural gas transportation. Because of the characteristics of PE pipeline, the material aging becomes a problem while using.The method for effectively and efficiently evaluating the aging performance of PE pipes in service has been highly concerned in the industry. There are differences in its aging condition due to differences in pipe diameter and material. It is found that the antioxidant capacity of PE pipes of the same PE material under the same SDR conditions increases with increasing pipe diameter as influenced by the wall thickness of the pipe. There are obvious differences in the antioxidant performance of PE pipes made from different materials; under the experimental conditions of this paper, the antioxidant performance of PE100 is significantly better than that of PE80.
Simulation of energy-saving technologies diffusion and carbon trading in the building materials industry
Authors: Zhang Yuzhuo , Wang Chengjie , Zheng Haifeng , Wu Peng
Published: August 2024

In the process of building materials production, the use of cement raw meal grinding aid technology, infrared high-radiation energy-saving coating for glass melting furnaces, and new ceramic integrated powder making technology can effectively reduce energy consumption and reduce carbon emissions. At present, China's carbon trading only includes power generation industry, but high-intensive industries such as building materials have been considered to be included in the carbon market. By the use of energy-saving technology to reduce carbon emissions, building materials enterprises participate in the carbon trading market, can realize the value of carbon assets. Based on the advanced energy saving technology in the building materials industry, this paper studies the influence of technology diffusion on the participation of building materials enterprises in carbon trading. The results show that the stock building materials mills choose the technical transformation under the loose quota allocation, and the new technology application of the incremental building materials mills under the tightened quota allocation. In the early stage of the operation of the carbon market, loose quotas should be implemented to realize the technical transformation and energy efficiency improvement of the stock building materials plants, and the quota can be gradually tightened with the maturity of the market operation
Transition Pathways to Carbon Neutrality in China's Power System under Multi-Technology Development Scenarios
Authors: Li Haoran , Li Bo , Xu Dongjie
Published: August 2024

This study uses the MESEIC model to design three scenarios of low, middle, and high electricity demand, and three development scenarios of electricity technologies to discuss the development paths of China's future power system to achieve carbon neutrality under different scenarios of electricity demand and electricity development. In the future, China's power system will shift to a new power system mainly based on renewable energy sources, but it is difficult to realize the complete phase-out of coal power under all development scenarios. Under the three scenarios, coal-fired power generation will decline to 0.72-4.11 trillion kWh in 2050, and its share will fall to 4.9%-30.3%. Coal power generation will peak in the 2025-2030 period, except for the high electricity demand, and negative emission scenario (NE-F) for fossil power generation.
Carbon emission calculation method of steel-concrete composite girder Bridge based on LCA: A case study of Yanchong Expressway (Hebei Section)
Authors: Xu Ruofei , Yin Yang , Miao Yumo , Yang Wangyiling , Sun Jiazhuo , Li Haoqi
Published: August 2024

This paper introduces the carbon emission calculation of reinforced concrete bridge based on life cycle assessment (LCA) method, taking the bridge on Yanchong Expressway in Hebei Province as an example. The emission factor method was used to calculate carbon emissions at the material production, construction, operation and maintenance, and demolition and disposal stages. Through detailed analysis, this study not only describes the carbon emissions of Bridges at various stages in the whole life cycle, but also provides a reference for reducing environmental impact and supporting the environmental protection and sustainable development of future infrastructure construction. In addition, the findings highlight the importance of LCA in developing effective emission reduction strategies, especially in the area of infrastructure construction, to help achieve lower carbon construction targets.
Carbon stock status of urban green space in Suqian City and carbon sink potential of major tree species
Authors: Ge Zhiwei , Liu Lu , Bai Yanyan , Zhang Rui , Huang Xueshan , Wang Jie , Peng Sili
Published: August 2024

【Purpose】Urban green spaces mitigate carbon emissions, boost carbon sinks, and address environmental risks. Analyzing their types, carbon stocks, and key tree species' sequestration capacity aids in improving green space management. This advances the "Carbon Peak, Carbon Neutral" strategy, guiding greening industry development and robust ecosystem construction.【Method】A systematic survey was conducted at representative urban green space sites, establishing observation plots to study species composition and woody plant populations. The carbon sequestration capacity of major tree species was evaluated considering baseline carbon stock and a latitude correction parameter.【Result】The total carbon stock in Suqian's urban green spaces stands at 136,285.47 tons, with regional green spaces contributing the most, followed by parks and protective green spaces, while subsidiaries account for the least. Analysis reveals that the arbor layer is the primary carbon pool, surpassing soil, shrub, and herb layers. Notably, different arbor species exhibit significant variations in carbon sink capacity. There is an obvious difference in the carbon sink capacity of different tree species, and among the 30 major tree species in Suqian City, there is an obvious difference in the carbon sink capacity of different tree species, and there is an obvious difference in the carbon sink capacity of different tree species，Populus adenopoda, Populus × canadensis, Cedrus deodara, Triadica sebifera, Celtis julianae, Celtis sinensis, Liquidambar formosana, Malus spectabilis, Ligustrum lucidum, Acer buergerianum, Osmanthus fragrans, Metasequoia glyptostroboides, Ginkgo bilobaet al. Carbon sink capacity is weaker, and the carbon sink capacity of species will not be insignificantly related to the length of the time interval, but will be affected by the latitudinal zonal space。【Conclusion】 For urban green space management, trees are pivotal, dominating carbon sequestration potential compared to shrubs and herbs. Thus, studying carbon sequestration and oxygen release of tree communities is crucial. Additionally, attention should be given to tree configuration and species selection, prioritizing locally adapted, high-carbon sequestration trees while considering landscape aesthetics and biodiversity conservation, for efficient urban green space management.
Adsorption behavior of asphaltene molecules on rock surface: A molecular dynamic study
Authors: Chen Sihang , Su Hang , Zhang Lu , Zhang Qian , Zhang Minghui , Sun Pengyu , Wu Yining , Ren Hao
Published: August 2024

Asphaltene deposition on rock surface seriously affects oil recovery efficiency. Molecular dynamics simulation method is used to study the difference in the adsorption behavior of asphaltene molecules on quartz surface, which will help to improve the in-depth understanding of asphaltene microstructure. This study finds that electrostatic interaction is an influential factor affecting asphaltene deposition on rock surface. We also illustrated the different adsorption behaviors of different asphaltene molecules and the influence of rock surfaces on the deposition.
Ultrasonic extraction of Centella asiatica
Authors: Yin Yuhe
Published: August 2024

Centella asiatica, as a traditional medicinal herb, has a long history in traditional Chinese medicine. It contains various active ingredients such as flavonoids, triterpenoids, and polysaccharides, with pharmacological effects including antioxidant, anti-inflammatory, and immunomodulatory properties. Ultrasonic extraction technology, as a novel extraction method, can effectively extract active ingredients from Centella asiatica, thereby improving the quality and efficacy of the drug. Research has shown that ultrasonic extraction exhibits higher efficiency, shorter extraction time, and reduced solvent and energy consumption. By optimizing ultrasonic parameters and extraction processes, extraction efficiency can be improved, energy consumption reduced, providing scientific basis for further development and application of Centella asiatica.