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Adaptation Practices by the Farmers for Reduction of Salinisation Problem in the Paddy Fields of South-Eastern Coast of Bangladesh 农民减少孟加拉国东南海岸稻田盐碱化问题的适应实践
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220086
P. Barua, Syed Hafizur Rahman, S. Eslamian
Climate change has become the biggest risk to the nutritional and food security of the planet worldwide. Rising temperatures, uneven rainfall, cyclones and droughts are unfavourably impacting agricultural production, which, in turn, is creating an elevated vulnerability to the livelihood of Bangladesh’s huge population. Bangladesh is an agrarian country and almost half of the population depends on agriculture activities as a profession. But the agriculture sector of the country is experiencing adverse impacts at various levels and ways because of climate change-induced natural hazards. The present study was done to explore the salinity intrusion problem, soil fertility and rice production in the study areas. Besides, the authors also discover some indigenous knowledge-based adaptation and coping practices of the farmers for reducing the impact of climate change in the study areas. The study disclosed that salinity intrusion into the surface water recorded at high values everywhere and the quality of the sediments was alarming. According to the experiences of the farmers, knowledge and resources, they looked for adaptation strategies to cope with the changing climatic situation. The study will help to demonstrate adaptation practices by the farmers for reducing the salinity level of the agriculture field which will be effective in the vulnerable areas of other parts of the country and worldwide while the area was affected by the salinisation problem.
气候变化已成为全球营养和粮食安全面临的最大风险。气温上升、降雨量不均、气旋和干旱对农业生产产生了不利影响,反过来又加剧了孟加拉国庞大人口的生计脆弱性。孟加拉国是一个农业国家,几乎一半的人口以农业活动为职业。但由于气候变化引发的自然灾害,该国农业部门正经历着各种程度和方式的不利影响。本研究旨在探讨研究区的盐度入侵问题、土壤肥力和水稻生产。此外,作者还发现了研究地区农民在减少气候变化影响方面的一些基于本土知识的适应和应对做法。该研究表明,地表水中的盐度入侵到处都很高,沉积物的质量令人担忧。根据农民的经验、知识和资源,他们寻找适应气候变化的战略。这项研究将有助于证明农民在降低农田盐度方面的适应做法,这将在该国其他地区和世界各地的脆弱地区有效,而该地区正受到盐碱化问题的影响。
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引用次数: 1
Four New Reports Set Scene for Discussions on Climate Finance at COP27 四份新报告为第27届联合国气候变化大会讨论气候资金奠定了基础
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220081
V. Subramanian
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引用次数: 0
Monitoring of Pesticide Residues in Lebanese Vegetables and Agricultural Soils and Their Impact on Soil Microbiological Properties 黎巴嫩蔬菜和农业土壤中农药残留监测及其对土壤微生物特性的影响
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220085
M. Omeiri, Rony S. Khnayzer, H. Yusef
The practice of pesticide application in agriculture done in Lebanon deviate from standard agricultural disciplines, raising awareness of their contamination of soil and vegetables as well as their repercussions on microbial communities. To this end, soil and vegetable samples from different pesticide-treated sites were quantified for chlorpyrifos (C) and methomyl (M) residues using Gas Chromatography-Mass Spectrometry. Moreover, clear soil specimens were treated with different concentrations of C, M, and CM assortment to assess their repercussion on the microbial population. High pesticide concentrations were recovered ranging between 31.13 and 53.74 mg/kg in eight agricultural fields, which abate gradually with time. After 20 days of pesticide implementation, their residues were above the maximum residual levels for lettuce, cabbage, tomato, and corn. Soil altered with pesticides showed fluctuation in its microbial community by suppressing some groups while favouring the propagation of tolerant species. Our data indicate the need for the requirement of strict laws to minimise pesticide usage and reduce their impact on soil quality, human health, and non-target organisms.
黎巴嫩在农业中施用农药的做法偏离了标准的农业纪律,提高了人们对其对土壤和蔬菜污染及其对微生物群落影响的认识。为此,使用气相色谱-质谱法对来自不同农药处理地点的土壤和蔬菜样品中的毒死蜱(C)和灭多威(M)残留量进行了定量。此外,用不同浓度的C、M和CM分类处理透明土壤样品,以评估其对微生物种群的影响。在8个农田中,发现了31.13至53.74毫克/公斤的高农药浓度,随着时间的推移,这种浓度逐渐减弱。施用农药20天后,其残留量高于生菜、卷心菜、番茄和玉米的最高残留水平。用杀虫剂改变的土壤表现出微生物群落的波动,抑制了一些群体,同时有利于耐受物种的繁殖。我们的数据表明,需要严格的法律要求,以尽量减少农药的使用,并减少其对土壤质量、人类健康和非目标生物的影响。
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引用次数: 0
Effect of Hydraulic Conductivity on Three Dimensional Contaminant Transport in Riverbank Filtration System 导电性对河岸过滤系统中三维污染物运移的影响
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220082
Shaymaa Mustafa, M. Darwish
Riverbank filtration system is a technique used for surface water treatment that is based on biological activities to attenuate the contamination in water through its movement from the river to the adjacent pumping well. Hydraulic conductivity is a critical parameter that affects the efficiency of riverbank filtration systems. In this study, an analytical model, using Green’s function approach, is developed to investigate the effect of hydraulic conductivity on contaminant transport and RBF system efficiency. The model is applied at the RBF site in Malaysia. The outcomes show that increasing the hydraulic conductivity values results in lowering the quality of the pumped water produced from the well, in which the contamination area around the well increase. Additionally, the distance from well to the river that should be considered when establishing a new RBF site is significantly affected by the hydraulic conductivity value.
河岸过滤系统是一种用于地表水处理的技术,它是基于生物活性来减少水中的污染,通过它从河流流向邻近的抽水井。导流率是影响河岸过滤系统效率的关键参数。在本研究中,采用格林函数方法建立了一个分析模型,以研究水力传导性对污染物输送和RBF系统效率的影响。该模型在马来西亚RBF现场得到了应用。结果表明:导水系数值的增大导致抽油井产出水水质的降低,井周污染面积增大;此外,在建立新的RBF站点时应考虑的井到河流的距离受水力导率值的显著影响。
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引用次数: 0
Optimal Reactive Power Dispatch by Success History Based Adaptive Differential Evolution Salp Swarm Algorithm 基于成功历史的自适应差分进化Salp群算法在无功优化调度中的应用
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220083
N. Kumar, R. Kumar
In this study, a novel hybrid algorithm success history-based adaptive differential evolution salp swarm algorithm (SHADE-SSA) is proposed to solve two different cases of IEEE 30 bus reactive power dispatch problems integrated with thermal generators, wind farms and solar photovoltaic plants. Real power loss minimization and voltage deviation minimization are considered as main objectives in the present work. The performance and robustness of the proposed hybrid SHADE-SSA algorithm are compared with the results of five different metaheuristic algorithms for the same test system and consider the same control variables and constraints. The results of the simulation of the proposed algorithm conform to the effective choice for the solution of optimal reactive power dispatch problems of power systems.
在本研究中,提出了一种新的基于混合算法成功历史的自适应差分进化salp群算法(SHADE-SSA),以解决与火电机组、风电场和太阳能光伏发电厂集成的IEEE 30总线无功功率调度问题的两种不同情况。实际功率损耗最小化和电压偏差最小化被认为是本工作的主要目标。将所提出的混合SHADE-SSA算法的性能和鲁棒性与针对同一测试系统的五种不同元启发式算法的结果进行了比较,并考虑了相同的控制变量和约束。该算法的仿真结果符合电力系统无功优化调度问题的有效选择。
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引用次数: 0
Optimisation of Defluoridation of Water by Zirconia Nanoparticles Using RSM RSM法优化氧化锆纳米颗粒对水中除氟的影响
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220091
Poornima G. Hiremath, G. Prashanth, Abdul Bais Kadli, Sheril Varghese, Vishnu V. Bhaskar
In the present work, zirconia nanoparticles were investigated for the adsorption of fluoride from water. The effect of the factor variables viz., the effect of initial fluoride concentration, adsorbent dosage, pH, and contact time and their interactions on adsorption of fluoride ion were investigated by response surface methodology (RSM) based on central composite design (CCD). The maximum fluoride removal was around 95% at 7 pH, initial fluoride concentration of 10 ppm, adsorbent dosage of 12.5 g/L, and contact time at 105 min. To understand the adsorption mechanism of fluoride on to the nanoparticles, adsorption isotherms and adsorption kinetics were studied. The Langmuir isotherm adsorption model and pseudo-second-order kinetics model fitted well for the fluoride removal using zirconia nanoparticles. The nanoparticles were characterised before and after for their adsorption using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and SEM analysis.
本文研究了氧化锆纳米颗粒对水中氟化物的吸附。采用基于中心复合设计(CCD)的响应面法(RSM)研究了初始氟浓度、吸附剂用量、pH、接触时间等因素对氟离子吸附的影响及其相互作用。在pH为7、初始氟浓度为10 ppm、吸附剂用量为12.5 g/L、接触时间为105 min的条件下,氟的去除率最高可达95%左右。为了解氟在纳米颗粒上的吸附机理,研究了吸附等温线和吸附动力学。Langmuir等温吸附模型和拟二级动力学模型对氧化锆纳米颗粒除氟具有较好的拟合性。采用x射线衍射(XRD)、傅里叶变换红外光谱(FTIR)和扫描电镜(SEM)对纳米颗粒吸附前后进行了表征。
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引用次数: 0
A Bibliographic Analysis of Adaptive Techniques for the Development of Environment-Friendly Renewable Energy Systems 环境友好型可再生能源系统发展的自适应技术参考文献分析
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220093
Shashi Gandhar, J. Ohri, Mukhtiar Singh
Renewable Energy Sources (RES) have always been seen as a sustainable and environment-friendly solution to the energy needs of the globe. It is a club of many sources that have been explored widely in the last five decades, and many ways have been designed to harness energy from these sources. But unavailability at all times and fluctuations affect the power quality and reliability of these units. Many adaptive techniques have been designed to maintain these parameters of energy systems. The development is still going on and will go on to find more efficient techniques to extract reliable and quality power. This study presents a bibliographic view of the research in this area for different adaptive techniques. This study also presented an ongoing trend and the future possibilities and past successes that have been achieved in this arena. In the paper, many papers have been reviewed on the recent development in adaptive techniques for power systems in the last five decades. IEEE, the biggest source platform for researchers and scientists, is considered for a survey and statistical analysis of recent developments. Based on a survey and detailed study, graphical analysis is designed to give a very accomplished perspective of adaptive techniques in energy systems for the researchers. The present study suggested many measures and techniques which can contribute to establishing renewable energy systems, thus, decreasing pollution and providing a clean, green and sustainable environment. This study presents a Hybrid energy system with hybrid adaptive techniques as a key solution to overcome the problem of pollution using RES as much as possible and to satisfy the energy demand also. This study can be a major reference point for researchers and power engineers for providing an environment-friendly and sustainable RES-based energy solutions.
可再生能源一直被视为满足全球能源需求的可持续和环境友好的解决方案。在过去的五十年里,它是一个由许多来源组成的俱乐部,已经被广泛探索,并设计了许多方法来利用这些来源的能量。但是,任何时候的不可用性和波动都会影响这些机组的电能质量和可靠性。已经设计了许多自适应技术来维持能量系统的这些参数。开发仍在继续,并将继续寻找更有效的技术来提取可靠和高质量的电力。本研究针对不同的适应技术提出了这一领域研究的书目观点。这项研究还介绍了目前的趋势、未来的可能性以及过去在这一领域取得的成功。本文综述了近五十年来电力系统自适应技术的最新发展。IEEE是研究人员和科学家的最大来源平台,被认为是对最新发展进行调查和统计分析的平台。在调查和详细研究的基础上,设计了图形分析,为研究人员提供了一个非常成功的能源系统自适应技术的视角。本研究提出了许多措施和技术,有助于建立可再生能源系统,从而减少污染,提供清洁、绿色和可持续的环境。本研究提出了一种具有混合自适应技术的混合能源系统,作为尽可能多地使用可再生能源解决污染问题和满足能源需求的关键解决方案。这项研究可以作为研究人员和电力工程师提供环境友好和可持续的可再生能源解决方案的主要参考点。
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引用次数: 0
Study the Effect of Some Citrus Peel Extracts Against Plant Pathogenic Fungi 柑桔皮提取物抗植物病原真菌作用的研究
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220094
A. Mshari, Alaa M. Alrudainy, Najwa M. Abu-Mejdad
The safest and most effective and preventive method that inhibits the growth of phytotoxic fungi is the biological method using metabolic materials, which are environmentally friendly. The current study focusses on extracting bioactive compounds from some citrus peels, and evaluating antimicrobial activity against some pathogenic plant fungi, also detecting the active compound using GC-MS. The five extracts of peels citrus included, Citrus aurantifolia (key lime), Citrus singensis (orange), Citrus maxima (pomelo), Citrus limon (lemon), and Citrus reticulate (mandarin orange). The extracts were evaluated against seven fungal species, including Alternaria solani, Alternaria alternate, Rhizoctonia solani, Macrophomina phaseolina, Trichothecium roseum, Fusarium solani, and Fusarium equiseti. The results showed that peels extract of pomelo (PPE) is the most effective anti-fungal, which was clear for all types of fungi used in the examination, and which recorded the highest inhibitory diameter against the fungus F. equiseti, followed by peels extract of the orange (OPE) and lemon peels extract (LPE), respectively, while lowest antifungal activities have been recorded in peels extracts of mandarin orange (MOPE) and key lime peels extract (KPE), respectively. The diameters of inhibition that represent the antifungal activity of the other extracts ranged between 0 and 25 mm, which constitute significant differences between them and (PPE). The most active extract (PPE) was analysed using GC-MS, and the result included the detection of 50 different compounds. According to the GC-MS results, furfural (4.91%), auraptenol (1.38%), 2-methoxy-4-vinylphenol (0.92%) and hexadecanoic acid-, methyl ester (0.80%) were the major components in the essential oil obtained from peels extract of pomelo (PPE), in addition of ethyl oleate (0.65%), alpha-terpineol (0.32%), osthole (0.31%), which were known as antifungal compounds.
抑制植物毒性真菌生长的最安全、最有效和最预防的方法是使用代谢材料的生物方法,这种方法对环境友好。目前的研究重点是从一些柑橘皮中提取生物活性化合物,并评价其对一些病原植物真菌的抗菌活性,同时用气相色谱-质谱法检测活性化合物。柑橘皮的五种提取物包括:酸橙、辛橙、蜜柚、柠檬和网纹柑橘。对七种真菌的提取物进行了评价,包括Alternaria solani、Alternaria alternate、Rhizoctonia solani、Macrophomina phaseolina、Trichothecium roseum、Fusarium solani和Fusarium equiseti。结果表明,柚子皮提取物(PPE)是最有效的抗真菌药物,对检测中使用的所有类型的真菌都是清楚的,对真菌木贼的抑制直径最高,其次分别是橙子皮提取物(OPE)和柠檬皮提取物(LPE),而柑橘皮提取物(MOPE)和酸橙皮提取物(KPE)的抗真菌活性最低。代表其他提取物抗真菌活性的抑制直径在0到25mm之间,这构成了它们与(PPE)之间的显著差异。使用GC-MS对最具活性的提取物(PPE)进行了分析,结果包括检测到50种不同的化合物。根据GC-MS结果,柚子皮提取物中的主要成分为糠醛(4.91%)、月桂醇(1.38%)、2-甲氧基-4-乙烯基苯酚(0.92%)和十六烷酸甲酯(0.80%),此外还有油酸乙酯(0.65%)、α-萜品醇(0.32%)、蛇床子素(0.31%)等抗真菌化合物。
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引用次数: 0
Effect of Sodium Fluoride on Glycemic Index and Liver Functions in Rats 氟化钠对大鼠血糖指数和肝功能的影响
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220092
Sadiq J Ramadhan, Muna Hassan Youssef, K. Khudair
From a health standpoint, fluoride (F) is a vital element for humans. It had harmful effects on numerous organs when consumed in high dosages. Fluoride poisoning has been linked to liver damage. The purpose of this study was to see how sodium fluoride (Naf) affected liver function and the glycemic index in adult male albino rats. Fourteen (14) adult male Wistar albino rats were randomly and evenly divided into two groups and given the following treatments for thirty (30) days: G1 Group (Control group), were given distilled water and fed a balanced diet, G2 rats were administered water that contained 100 ppm Naf. The animals were fasted for 8-12 hours before being anesthetized and blood samples were taken by heart puncture technique at zero day (zero time) and (30) day. The following parameters were measured using the serum. The glycemic index contains (glucose, insulin, and insulin resistance), as well as liver function tests such as serum activity of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma glutamyl transferase (GGT), as well as direct, indirect and total bilirubin concentration. The livers and pancreas were quickly delivered, meticulously dissected out, prepped, and viewed under a light microscope. The results demonstrated that 30 days of exposure to Naf in drinking water produced liver damage manifested by significant increases in blood ALT, AST, and GGT activity as well as significant elevation in serum bilirubin (direct, indirect and total) concentration compared to control group. A significant rise in blood glucose levels and a fall in blood insulin levels and IR were detected at the end of the experiments in Naf treated group when compared to the control. Histopathological changes in Naf treated group was observed in hepatic and pancreatic tissue manifested by generalised degeneration and necrosis of hepatocytes, in addition, to severe degeneration of acinar and pancreatic islet cells. In conclusion, the findings of this investigation revealed Naf therapy-induced liver damage and a change in the glycemic index in adult male rats.
从健康的角度来看,氟化物(F)是人类的重要元素。高剂量食用会对许多器官产生有害影响。氟化物中毒与肝脏损伤有关。本研究的目的是观察氟化钠(Naf)如何影响成年雄性白化大鼠的肝功能和血糖指数。十四(14)只成年雄性Wistar白化大鼠被随机均匀地分为两组,并给予以下治疗三十(30)天:G1组(对照组),给予蒸馏水并喂食平衡饮食,G2大鼠给予含有100ppm Naf的水。动物在麻醉前禁食8-12小时,并在第0天(第0时间)和第30天通过心脏穿刺技术采集血样。使用血清测量以下参数。血糖指数包括(葡萄糖、胰岛素和胰岛素抵抗),以及肝功能测试,如丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶和γ-谷氨酰转移酶(GGT)的血清活性,以及直接、间接和总胆红素浓度。肝脏和胰腺被迅速输送,仔细解剖,准备,并在光学显微镜下观察。结果表明,与对照组相比,暴露于饮用水中的Naf 30天会导致肝损伤,表现为血液ALT、AST和GGT活性显著升高,血清胆红素(直接、间接和总)浓度显著升高。与对照组相比,Naf治疗组在实验结束时血糖水平显著升高,血胰岛素水平和IR下降。Naf治疗组的肝和胰腺组织出现组织病理学变化,表现为肝细胞普遍变性和坏死,腺泡和胰岛细胞严重变性。总之,这项研究的结果揭示了Naf治疗诱导的成年雄性大鼠肝损伤和血糖指数的变化。
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引用次数: 0
Assessment of Temporal Variation in Hydrogeochemical Facies of River Water in the Central Himalayan Region 喜马拉雅中部地区河水水文地球化学相的时间变化评价
IF 0.5 Q4 ENVIRONMENTAL SCIENCES Pub Date : 2022-11-14 DOI: 10.3233/ajw220090
Kajal Sinha, C. A. Vishwakarma, J. Dwivedi, Prashant Singh
The water quality of a region is greatly influenced by the environment and its quality is a function of rock-water interaction and anthropogenic processes. 90% of the rural population of Uttarakhand depends on rivers and springs sources for their daily uses. Therefore, water characterisation and monitoring over time is important for human health and aquatic life. The basic understanding of hydrochemistry can be extracted by a trilinear piper diagram. The study also intends to develop hydro-chemical analysis for water quality at various locations in Uttarakhand to represent four major river catchments. The study attempted over 50 locations from 2010 to 2019 during pre and post-monsoon seasons. Four anions and four cations were used to understand hydrogeochemical facies. Result reveals that the most dominant hydrogeochemical facies were Ca-Mg-HCO3 in the entire region followed by Ca-Mg-Cl or Ca-Mg-SO4 facies due to limestone-dominant geology. Na-Cl or Na-SO4 facies enhanced due to agriculture activities while NaHCO3 facies due to the rapid weathering processes along the river course over the period. The study recommended for the area where the water type is either Na-Cl or Na-SO4 or Na-HCO3, intensive water resource planning should be implemented. These areas are highly vulnerable to human health costs.
一个地区的水质受环境的影响很大,其质量是岩石-水相互作用和人为过程的函数。北阿坎德邦90%的农村人口依靠河流和泉水作为日常用水。因此,水的特征和长期监测对人类健康和水生生物非常重要。水化学的基本知识可以通过三线性管道图提取出来。该研究还打算对北阿坎德邦不同地点的水质进行水化学分析,以代表四个主要的河流集水区。该研究在2010年至2019年的季风前后季节对50多个地点进行了研究。用4个阴离子和4个阳离子来了解水文地球化学相。结果表明,全区以灰岩为主,水文地球化学相以Ca-Mg-HCO3为主,其次为Ca-Mg-Cl或Ca-Mg-SO4。Na-Cl或Na-SO4相由于农业活动而增强,而NaHCO3相则由于河道沿线的快速风化作用而增强。研究建议,在水类型为Na-Cl或Na-SO4或Na-HCO3的地区,应实施集约化水资源规划。这些地区极易受到人类健康成本的影响。
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引用次数: 0
期刊
Asian Journal of Water, Environment and Pollution
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