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Development of a Sustainable Dyeing Process for Cotton fabric Utilizing Natural Dyes from Punica granatum L. and Curcuma Longa 利用从石榴和莪术中提取的天然染料开发棉织物的可持续染色工艺
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.12
B. B. Ahire, S. Kasabe, Archana B. Mali, Vikram R. Jadhav
Pomegranate fruit grains and turmeric have naturally dyeing properties, making them nontoxic, non-allergic, and biodegradable alternatives to synthetic dyes for coloring various textiles, including cotton. This study used pomegranate and turmeric extracts to dye bleached cotton fabric using various mordants, including pre-, post-, and simultaneous mordanting techniques. The natural dyes in these extracts contains alkaloids, tannins, anthocyanins, glycosides, and curcumin, impart different colours to the fabrics. The light sensitivity of these dyes and also role of pH of the dyeing were also explored. The wide ranges of colors were obtained by varying the concentration, ratio, and pH of the extracts, as well as the choice of mordant used. Pomegranate and turmeric extracts demonstrates the potential results as sustainable dyeing and environmentally friendly dyes for cotton fabric.
石榴果粒和姜黄具有天然染色特性,使其成为无毒、无过敏和可生物降解的合成染料替代品,可用于包括棉花在内的各种纺织品的染色。这项研究利用石榴和姜黄提取物,采用各种媒染剂(包括前、后和同时媒染技术)对漂白棉织物进行染色。这些提取物中的天然染料含有生物碱、单宁、花青素、苷和姜黄素,能给织物带来不同的颜色。此外,还探讨了这些染料的光敏感性以及染色 pH 值的作用。通过改变提取物的浓度、比例和 pH 值,以及所使用媒染剂的选择,可以获得多种颜色。石榴和姜黄提取物作为棉织物的可持续染色和环保染料,显示了其潜在的效果。
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引用次数: 0
Need of a Dedicated Programme on Short-Lived Climate Pollutants (SLCP) in South Asia 南亚短期气候污染物 (SLCP) 专项计划的必要性
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.1
Umesh Chandra Kulshrestha
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引用次数: 0
Chemical Potency of Cobalt Doped Modified Graphite Electrode Prepared by Electrochemical Method and its Application in Degrading Solution of Rhodamine-B dye 电化学方法制备的掺钴改性石墨电极的化学效力及其在降解罗丹明-B 染料溶液中的应用
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.23
Hiremaralli Sathyanarayana Sindhushree, Rayapura Thimmegowda Radhika, B.M. Venkatesha
Primary goal of the present study is to progress a methodological framework for Rhodamine-B dye degradation using cobalt doped graphite modified electrode in aqueous solution by electrochemical method. This is environmentally friendly method. Rate study for Rh-B dye degradation under various parameters like concentration, applied current and temperature were studied and compared between Graphite electrode and Cobalt graphite electrode. Ultra Violet-Visible spectral data and Chemical oxygen demand values are evident for the complete degradation of Rhodamine-B in aqueous solution during anodic oxidation using the modified Co/graphite electrode. The dye degradation efficiency for Cobalt graphite modified electrode (Co/GME) increases by 77% compared to graphite electrode. The COD values decreases to ~98% than the initial COD after degradation with Co/GME. Increase in applied current, temperature increases the rate of degradation and follows first order kinetics up to 60% of the reaction. Hydroxyl (.OH) free radicals are produced by advanced oxidation processes (AOPs), which are attack the dye molecules and cause them to degrade. SEM/EDAX is used to observe the formation of cobalt layer in the rod of graphite. Under various laboratory settings ICE values were computed, it shows that Cobalt doped graphite modified electrode acts as a good anode to degrade Rh-B dye and it converted into CO2, H2O, and other basic inorganic salts. This procedure is straightforward, inexpensive, and can be used to treat wastewater that contains organics.
本研究的主要目标是通过电化学方法,利用掺钴石墨修饰电极在水溶液中降解罗丹明-B 染料的方法框架。这是一种环境友好型方法。研究了 Rh-B 染料在浓度、应用电流和温度等不同参数下的降解速率,并对石墨电极和掺钴石墨电极进行了比较。在使用改性钴/石墨电极进行阳极氧化过程中,超紫外-可见光谱数据和化学需氧量值显示了水溶液中罗丹明-B 的完全降解。与石墨电极相比,钴石墨改性电极(Co/GME)的染料降解效率提高了 77%。使用 Co/GME 降解后,COD 值比初始 COD 值下降了约 98%。施加电流和温度的增加会提高降解速率,并遵循一阶动力学,最高可达反应的 60%。高级氧化过程(AOPs)会产生羟基(.OH)自由基,攻击染料分子并导致其降解。SEM/EDAX 用于观察石墨棒中钴层的形成。在不同的实验室环境下计算出的 ICE 值表明,掺钴石墨改性电极是降解 Rh-B 染料的良好阳极,可将其转化为 CO2、H2O 和其他基本无机盐。该过程简单、成本低廉,可用于处理含有有机物的废水。
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引用次数: 0
Assessment of Zooplankton Community in the Kagina River Dam Kachur, Sedam Taluk, Kalaburagi District, Karnataka 卡纳塔克邦卡拉布拉吉县塞达姆塔鲁克卡吉纳河坝卡丘尔浮游动物群落评估
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.35
Siddaram L Poojari, Siddharam Kottalagi, Chaitra Kollur
Zooplankton plays a vital role in the aquatic food chain particularly for fishes and aquatic animals. The current study was conducted on community of Zooplankton in Kagina River Dam, Kachur, Sedam Taluk, Kalaburagi, Karnataka. Water samples were collected every month for oneyear i.e., October 2022 to September 2023. Twenty species of zooplankton are recorded and are belong to three groups such as rotifer (Eight species), Cladocera (Six species) and Copepoda (Six species). From the investigation, we can conclude that the Rotifera is the dominant group among the other groups of zooplankton recorded during the survey.
浮游动物在水生食物链中扮演着重要角色,尤其是对鱼类和水生动物而言。本研究对卡纳塔克邦卡拉布拉吉市塞达姆塔卢克区卡丘尔镇卡吉纳河大坝的浮游动物群落进行了调查。在 2022 年 10 月至 2023 年 9 月的一年时间里,每月采集水样。记录到的浮游动物有 20 种,分属三类,如轮虫(8 种)、栉水母(6 种)和桡足类(6 种)。通过调查,我们可以得出结论,在调查期间记录到的浮游动物中,轮虫类是最主要的类群。
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引用次数: 0
Impact of Surface Dew Point Temperature, Precipitable Water and the Lifted Index on the Precipitation over Hyderabad (India). 表面露点温度、可降水量和抬升指数对海德拉巴(印度)降水的影响。
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.19
Mohammad Taiyab, Rizwan ul Haq Ansari *, Md.Khaleelur Rahiman, Hakeem Aleem Basha
In this manuscript, we analyze some significant atmospheric parameters relating to precipitation over Hyderabad. For that purpose, we study the relationships between dew point temperature, precipitable water, lifted index with precipitation and the correlation between these parameters. Our analysis includes interpolation, correlation, and regression. For the ten-year average of monthly mean data, the correlation coefficient of dew point temperature with precipitable water is 0.95, the lifted index with precipitable water is (-0.82), the precipitable water with precipitation is 0.96, the lifted index with precipitation is (-0.69). For complete time series monthly mean data, the correlation of dew point temperature with precipitable water is 0.83, the lifted index with precipitable water is (-0.74), the precipitable water with precipitation is 0.78, lifted index with precipitation is (-0.51). Thus, there is positive correlation between some parameters, while negative correlation between others. We have also noticed more precipitation when the precipitable water values range from 40 mm to 60 mm and when the LI is more negative. The degree of relationship between dew point temperature and natural logarithm of Precipitable Water was excellent over Hyderabad and a regression equation relating the two parameters was computed. The probability of precipitation and severe weather occurrence could be identified along with Td, PW and LI. Thus, there is a possibility that LI, Td and PW can be potential parameters to measure the occurrence of precipitation events.
在本手稿中,我们分析了与海得拉巴降水有关的一些重要大气参数。为此,我们研究了露点温度、可降水量、抬升指数与降水之间的关系,以及这些参数之间的相关性。我们的分析包括插值、相关和回归。对于十年平均月平均数据,露点温度与可降水量的相关系数为 0.95,抬升指数与可降水量的相关系数为(-0.82),可降水量与降水量的相关系数为 0.96,抬升指数与降水量的相关系数为(-0.69)。在完整的时间序列月平均数据中,露点温度与可降水量的相关性为 0.83,抬升指数与可降水量的相关性为(-0.74),可降水量与降水量的相关性为 0.78,抬升指数与降水量的相关性为(-0.51)。因此,一些参数之间存在正相关,而另一些参数之间则存在负相关。我们还注意到,可降水量值在 40 毫米至 60 毫米之间时,降水量较多,而升沉指数为负值时,降水量也较多。在海得拉巴,露点温度与可降水量的自然对数之间的关系非常密切,并计算出了这两个参数之间的回归方程。降水和恶劣天气发生的概率可与 Td、PW 和 LI 一同确定。因此,LI、Td 和 PW 有可能成为测量降水事件发生情况的潜在参数。
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引用次数: 0
Dynamics of Per-Urban Land Alteration in and Around Siliguri City, India: A Geo-Spatial Study 印度西里古里市及其周边地区城市周边土地变化的动态:地理空间研究
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.38
Subham Roy, Ranjan Roy
Urban studies in more detailed form have emphasized zonal development and spatio-temporal transformation of cities. With the progress of time, the city expands outward, which gives birth to new urban areas. While areas within the administrative boundary of a city often goes through the process of planning, those, outside the administrative jurisdiction of the city often lack proper management and organization of land. This often results in haphazard urban growth and proliferation of semi-formal settlements within the peri-urban setting of developing nations. The present study was conducted for exploring the dynamics of peripheral urban land alterations in and around Siliguri city. For in-depth research, three buffer zones were delineated and supervised classification-based satellite images were incorporated to visualize the usage and coverage of land (LULC) based transformations of over the years. In addition, NDVI and LST were used to trace the changes in vegetation quality and surface temperature at the buffer zone level. The findings show a deterioration in vegetation health and an increase in surface temperature of the land in newly developed built-up and desolate regions. All three buffer zones showed a negative association the temperature of the land surface and the health of the vegetation. Furthermore, spatial extent of built-up land determined by remote sensing data was compared to population growth rates to calculate the Land Conversion Rate-Population Growth Rate (LCRPGR). The study emphasizes that peri-urbanization has accelerated the spread of built-up areas across the three zones, reflecting population constraints on land and yielding an overall LCRPGR value of 3.22. Importantly, the study demonstrated how the change-induced evidence of peri-urban dynamics has led to land transformation in the study area. Importantly, the study highlights how evidence of peri-urban dynamics reveals land changes in the studied area. It demonstrates how the rapid rise of people and development, along with limited available land space, drives the rapid alteration of peri-urban areas inside urban cityscape.
更详细的城市研究强调城市的区域发展和时空转换。随着时间的推移,城市不断向外扩展,从而产生了新的城市区域。城市行政边界内的区域往往经过规划,而城市行政管辖范围外的区域往往缺乏适当的土地管理和组织。这往往会导致城市无序发展和发展中国家城郊半正规住区的激增。本研究旨在探索西里古里市及其周边地区城市周边土地变化的动态。为进行深入研究,划定了三个缓冲区,并将基于监督分类的卫星图像纳入其中,以直观显示多年来基于土地利用、土地利用变化和土地覆盖(LULC)的变化情况。此外,还使用 NDVI 和 LST 追踪缓冲区植被质量和地表温度的变化。研究结果表明,在新开发的建筑密集区和荒凉区,植被健康状况恶化,地表温度升高。所有三个缓冲区的地表温度和植被健康都呈负相关。此外,将遥感数据确定的建成区土地空间范围与人口增长率进行比较,计算出土地转换率-人口增长率(LCRPGR)。研究强调,近郊城市化加速了建成区在三个区域的扩展,反映了人口对土地的限制,得出的总体 LCRPGR 值为 3.22。重要的是,该研究展示了近郊动态变化引起的证据如何导致了研究地区的土地转型。重要的是,研究强调了城郊动态的证据如何揭示了研究地区的土地变化。它展示了人口和发展的迅速增加,以及有限的可用土地空间如何推动城市景观中的城郊地区迅速改变。
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引用次数: 0
A Study on Urban Heat Island (UHI): Challenges and Opportunities for Mitigation 城市热岛(UHI)研究:缓解的挑战与机遇
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.37
Anita Yadav, Jaswant Singh
Urban Heat Island (UHI) is a significant issue in metropolitan regions in India, where cities are experiencing increasing temperatures ranging from 1 to 5 °C. Although UHI is a global phenomenon, it particularly impacts major cities in India, and there is a need for more research in this field. This review compares the latest global developments in UHI research with the current research in India, highlighting areas where India may lag. The review notes that there is a lack of research on UHI in numerical modeling in India, which is a limitation. Because of this, finding a solution to UHI and putting it into law requires more focus and effort. Urgent measures are required to lessen the effects of UHI in urban areas of India. Parameter outputs such as Land Surface Temperatures (LST), Normalized Difference Vegetation Index (NDVI), Land Use/Land Cover (LULC), and Normalized Difference Built-up Index (NDBI) were also compared with the results of prior research and modules in the review. Using correlations from three prior studies, the analysis demonstrated that the temperature deviation approximation was 0.157 °C better than last year's manuals. Consequently, additional research is needed to address urban heat islands (UHI) in Indian cities, focusing on numerical modeling. Prompt legislative and policy responses are also necessary. The review emphasizes the importance of ongoing research into UHI in India and measures to mitigate its effects.
城市热岛(UHI)是印度大都市地区的一个重要问题,这些城市的气温正在上升 1 到 5 °C。尽管城市热岛是一种全球现象,但它对印度主要城市的影响尤为严重,因此需要在这一领域开展更多研究。本综述比较了全球在 UHI 研究方面的最新进展和印度目前的研究情况,强调了印度可能落后的领域。综述指出,印度在数值建模方面缺乏对 UHI 的研究,这是一个局限。正因为如此,要找到解决特高气温的办法并将其付诸法律,需要更多的关注和努力。需要采取紧急措施来减少 UHI 对印度城市地区的影响。此外,还将地表温度 (LST)、归一化差异植被指数 (NDVI)、土地利用/土地覆被 (LULC) 和归一化差异建筑指数 (NDBI) 等参数输出与先前的研究结果和审查模块进行了比较。利用之前三项研究的相关性,分析表明温度偏差近似值比去年的手册好 0.157 ℃。因此,需要开展更多研究来解决印度城市的城市热岛问题,重点是数值建模。此外,还需要及时采取立法和政策应对措施。综述强调了对印度城市热岛及其影响的持续研究的重要性。
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引用次数: 0
Changing Tourism Trends and Vulnerability Assessment of Built Environment in Hill Stations of Indian Himalayan Region. 印度喜马拉雅地区山地旅游趋势变化和建筑环境脆弱性评估。
Pub Date : 2024-05-10 DOI: 10.12944/cwe.19.1.21
Shubhra Pande, Monalisa Bhardwaj
Tourist arrivals in the Indian Himalayan region have led to an increase of 1.6 times the population of the native residents in 2019. The trend of winter tourism among foreign tourists, along with adventure and pilgrimage tourism, has resulted in an average annual growth of 28.78% between 2002 and 2013. This study focuses on the changing tourism and climatic trends in tourist hotspots of the Indian Himalayan Region (IHR) to evaluate the vulnerability of the built environment, which arises from the increasing demand for tourist infrastructure. The approach taken in this research is based on secondary literature available and case studies of emerging tourist centers in and around Shimla region of Himachal Pradesh. According to records from 2019-20, domestic tourism has increased in Himachal Pradesh by 4.57% and in Shimla by 5.51%. However, the changing trends and the tourist demand for fast, unplanned infrastructure growth can lead to over-tourism and disaster vulnerability. Therefore, there is a need to consider the risk and change management in the fragile ecosystem of IHR through analysis of climatic and tourism trends. To achieve this, computerized tools such as Real-Time Systems, Intelligent Transport Systems, and Neural networks projects are suggested for feasibility and assessment of proposed tourism infrastructure projects. The suggested process will strengthen the project vision by benefiting the policymakers, stakeholders, and tourists while maintaining eco-friendly tourism opportunities through project performance management.
到 2019 年,印度喜马拉雅地区的游客人数已使当地居民人口增长了 1.6 倍。外国游客的冬季旅游趋势,加上探险和朝圣旅游,使得 2002 年至 2013 年期间的年均增长率达到 28.78%。本研究重点关注印度喜马拉雅地区(IHR)旅游热点地区不断变化的旅游和气候趋势,以评估因旅游基础设施需求不断增长而产生的建筑环境脆弱性。本研究采用的方法基于现有的二手文献以及对喜马偕尔邦西姆拉地区及周边新兴旅游中心的案例研究。根据 2019-20 年的记录,喜马偕尔邦的国内旅游业增长了 4.57%,西姆拉增长了 5.51%。然而,不断变化的趋势和游客对快速、无计划基础设施增长的需求会导致过度旅游和易受灾害影响。因此,有必要通过对气候和旅游趋势的分析,考虑对国际山地研究中心脆弱的生态系统进行风险和变化管理。为此,建议采用实时系统、智能交通系统和神经网络项目等计算机化工具,对拟议的旅游基础设施项目进行可行性分析和评估。建议的程序将加强项目的远景规划,使决策者、利益相关者和游客受益,同时通过项目绩效管理保持生态友好型旅游机会。
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引用次数: 0
Assessment of Plants Sensitivity to Air Pollution using Physiological and Biochemical Parameters 利用生理生化参数评估植物对空气污染的敏感性
Pub Date : 2024-01-10 DOI: 10.12944/cwe.18.3.07
G. S. Prasath, M. Alga, Celine Rebellow, A. Subramani, Psidium Guajava
Plants act as a main green belt enhancement component. Green plants create a surface that may absorb air pollutants and act as a sink for them, making greenbelts an efficient method of controlling air pollution. Thus attention is needed to promote and develop green belt zones in polluted areas. The current study is focused on evaluating the air pollution tolerance levels of Mangifera indica, Ficus religiosa, Psidium guajava, Annona squamosa already grown in polluted and unpolluted sites. By taking into account biochemical markers such as total chlorophyll level, ascorbic acid level, pH, water content, the Air pollution tolerance index (APTI) was calculated. APTI is an empirical relationship that assesses the degree to which different plant species can tolerate air pollution .Plants that possess APTI value less than or equal to 11 are known as sensitive, between 12 and 16 are moderately tolerant and greater than 17 are tolerant. The results obtained from the study showed that M. indica is more tolerant in nature. The rest of the plants used in the study are found to be intermittently tolerant. From this study, it can be concluded that planting Mangifera indica, Psidium guajava ,Annona squamosa, Ficus religosa in urban areas can reduce air pollution. This study also concludes that use of the APTI evaluation for the identification of air pollution tolerant plants is a suitable method.
植物是绿化带的主要强化成分。绿色植物形成的表面可以吸收空气中的污染物,成为污染物的吸收汇,使绿化带成为控制空气污染的有效方法。因此,需要重视在污染地区推广和发展绿化带。目前的研究重点是评估已在污染和未污染地区生长的芒果、榕树、番石榴和柿树对空气污染的耐受水平。通过考虑总叶绿素水平、抗坏血酸水平、pH 值、含水量等生化指标,计算出了空气污染耐受指数(APTI)。APTI是一种经验关系,用于评估不同植物物种对空气污染的耐受程度。APTI值小于或等于11的植物被称为敏感性植物,介于12至16之间的为中度耐受性植物,大于17的为耐受性植物。研究结果表明,籼稻的耐受性更强。研究中使用的其他植物被发现具有间歇性耐受性。从这项研究中可以得出结论,在城市地区种植芒果、番石榴、鹅掌楸和榕树可以减少空气污染。这项研究还得出结论,使用 APTI 评估来鉴定耐受空气污染的植物是一种合适的方法。
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引用次数: 0
Comparative Analysis of Artificial Neural Network (ANN) and Wavelet Integrated Artificial Neural Network (W-ANN) Approaches for Rainfall Modeling of Southern Rajasthan, India 人工神经网络(ANN)与小波综合人工神经网络(W-ANN)方法在印度拉贾斯坦邦南部降雨建模中的比较分析
Pub Date : 2024-01-10 DOI: 10.12944/cwe.18.3.17
Vinayak Paradkar, H. K. Mittal
This paper addresses the challenge of predicting erratic rainfall in Rajasthan state of India, particularly in southern regions. Reliable rainfall predictions are crucial for water resource management and agriculture planning. The research involved selecting 58 stations across seven districts of southern Rajasthan and identifying the best fit computational neural (ANN) and wavelet integrated computational neural (W-ANN) architectures based on performance metrics. Different combinations of input characters, hidden layer neurons, learning algorithms, and training cycles were tested to determine optimal models. Hybrid models, combining wavelet analysis with ANN, were explored to tackle non-stationary hydrologic signals effectively. Results showed that ANN Model C with ten input layer neurons performed best for 74% of stations, followed by Model B (21% of stations) and Model A (5% of stations). Models with increased input and hidden layer neurons performed better. Among the selected stations, 81% of stations demonstrated improved performance using W-ANN models due to effective signal decomposition and information extraction. The hybrid W-ANN models outperformed simple ANN models for rainfall prediction. Both ANN and W-ANN models accurately forecasted weekly rainfall, as observed in the comparison of actual and forecasted values.
本文探讨了预测印度拉贾斯坦邦(尤其是南部地区)不稳定降雨量所面临的挑战。可靠的降雨预测对水资源管理和农业规划至关重要。研究涉及在拉贾斯坦邦南部的七个地区选择 58 个站点,并根据性能指标确定最合适的计算神经(ANN)和小波综合计算神经(W-ANN)架构。对输入字符、隐藏层神经元、学习算法和训练周期的不同组合进行了测试,以确定最佳模型。此外,还探索了小波分析与 ANN 相结合的混合模型,以有效处理非稳态水文信号。结果表明,具有 10 个输入层神经元的方差分析模型 C 在 74% 的站点中表现最佳,其次是模型 B(21% 的站点)和模型 A(5% 的站点)。输入层和隐藏层神经元越多的模型性能越好。在选定的台站中,由于有效的信号分解和信息提取,81% 的台站使用 W-ANN 模型后性能有所提高。在降雨预测方面,W-ANN 混合模型的表现优于简单的 ANN 模型。从实际值和预测值的比较中可以看出,ANN 模型和 W-ANN 模型都能准确预测每周的降雨量。
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引用次数: 0
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Current World Environment
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