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Análise da qualidade da água e detecção do agrotóxico glifosato em sedimentos da bacia hidrográfica do Ribeirão São João em Porto Nacional -TO 波尔图国家-TO ribeirao sao joao流域沉积物中水质分析和农药草甘膦检测
Pub Date : 2021-10-02 DOI: 10.6008/cbpc2318-3055.2021.002.0001
Ângelo Ricardo Balduíno, Valéria Rodrigues Macedo
A bacia hidrográfica do Ribeirão São João, situado no município de Porto Nacional- TO, é o principal manancial de captação para abastecimento urbano. Esta principal fonte vem sofrendo diversas agressões como, exploração da agricultura e pecuária, onde se localizam captações para irrigação. Neste estudo foi realizado o acompanhamento da qualidade das águas do Ribeirão São João. Por se tratar de um recurso hídrico de Classe Dois de água doce, pode ser destinada para abastecimento para consumo humano, natação, irrigação de hortaliças, parques, jardins, à aquicultura e à pesca. Para análise do cálculo de Índice de Qualidade da Água da Fundação Estadual do Meio Ambiente (IQA- FEAM), foram ponderados nove parâmetros: pH, temperatura, turbidez, sólidos dissolvidos totais, oxigênio dissolvido, demanda bioquímica de oxigênio, fósforo total, nitrogênio total e coliformes termotolerantes e, a concentração do agrotóxico glifosato nos sedimentos do reservatório. Os resultados alcançados demonstraram que a água do Ribeirão São João pode ser classificada como de qualidade mediana com valor igual a 69, segundo a FEAM, mesmo com alguns parâmetros em desacordo comparados à legislação ambiental com os padrões determinados pela Resolução 357/2005 do Conselho Nacional do Meio Ambiente (CONAMA). Quanto à concentração de glifosato, a média obtida foi de 0,03 μg/L, inferior ao valor limite de 0,65 μg/L. A presença da substância química, provavelmente, veio das chuvas ocasionadas nesse período em estudo.
sao joao河流域位于波尔图国家- TO市,是城市供水的主要集水区。这一主要来源遭受了几次攻击,如农业和畜牧业的开发,那里有灌溉的集水区。本研究对ribeirao sao joao的水质进行了监测。由于它是第二类淡水资源,可用于人类消费、游泳、蔬菜灌溉、公园、花园、水产养殖和渔业。分析水质指数计算的基础环境状态(IQA FEAM),故九参数:pH、温度、浊度、总固体溶解,溶氧,生物化学氧的需求,总磷、总氮和大肠杆菌群termotolerantes和水库的沉积物中,agrotóxico草甘膦的浓度。结果表明,根据FEAM, ribeirao sao joao的水可以被归类为中位数质量,值等于69,即使一些参数与环境立法与国家环境委员会(CONAMA)第357/2005号决议确定的标准不一致。草甘膦浓度平均值为0.03 μg/L,低于0.65 μg/L的极限值。这种化学物质的存在可能来自于研究期间造成的降雨。
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引用次数: 0
Application of an Integrated Approach to Study Flooding in Coastal Areas 综合方法在沿海地区洪水研究中的应用
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.01
J. Pan, V. Penchev, J. Zhang, J. H. Wang, D. Dragancheva, M. Xiong, F. Penchev, D. T. Wang, S. Shukrieva
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引用次数: 0
Computational Fluid Dynamics Prediction of the Resistance of Modern Container Ships 现代集装箱船阻力的计算流体力学预测
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.04
Kiril Todorov
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引用次数: 0
On the EU Green Deal and Building Branch 关于欧盟绿色协议和建筑分部
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.05
Yatchko Ivanov, A. Yanakieva, R. Kazandjiev
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引用次数: 0
Fractography Analysis of Supporting Elements Fractured Under Operating Conditions 作业条件下支撑构件断裂断口分析
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.06
V. Dyakova
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引用次数: 0
Approaches to Determining the Attenuation of Electromagnetic Waves from the Centimeter Range in Dielectric Composite Materials 介电复合材料中厘米范围电磁波衰减的测定方法
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.07
Nikolay Gueorguiev, A. Semenov, S. Ivashov
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引用次数: 0
Mechanical Loss Spectrum of the Fe-20%Ni-C Alloys in the Temperature Interval 300 K–700 K Fe-20%Ni-C合金在300 K - 700 K温度区间的力学损耗谱
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.03
S. Parshorov, I. Parshorov
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引用次数: 0
High Sensitive Quartz Temperature Sensors 高灵敏度石英温度传感器
Pub Date : 2021-08-04 DOI: 10.7546/engsci.lviii.21.03.02
L. Spassov
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引用次数: 0
Numerical and Experimental Generation of Freak Waves 反常波的数值和实验生成
Pub Date : 2021-05-10 DOI: 10.7546/ENGSCI.LVIII.21.02.06
N. Markov, G. Nikolov, R. Kishev
Control signals with simultaneous modulation of periods and amplitudes were finetuned and fed to a wave flap for a generation of freak waves. The meshless Smoothed Particle Hydrodynamics method was used to predict the location and the amplitude of the maximum wave crest. The time series output from the DualSPHysics software was validated experimentally at the BSHC seakeeping wave basin. The experimental data is in good agreement with the simulations.
同时调制周期和振幅的控制信号被微调并馈入一个波瓣产生异常波。采用无网格光滑粒子流体力学方法预测最大波峰的位置和振幅。dualspphysics软件输出的时间序列在BSHC耐波盆地进行了实验验证。实验数据与模拟结果吻合较好。
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引用次数: 1
Determining the Asymmetric Rudder Efficiency of a Twin Rudder Patrol Ship at Manoeuvring 双舵巡逻舰机动时非对称舵效率的确定
Pub Date : 2021-05-10 DOI: 10.7546/ENGSCI.LVIII.21.02.03
Dobrin Efremov
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引用次数: 0
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Contemporary engineering sciences
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