水污染是指将能源或物质不当的排放到地球资源,包括空气、水和土地中,对生态系统造成有害且往往是持久性的破坏。这种污染严重影响了生活的质量,造成负面后果,而且影响到生态系统的活生物体和非活组成部分,破坏了自然环境和其正常功能。制造业的增长引起了人们对环境污染的严重担忧,纺织、造纸和印刷等行业释放的大量有机染料尤其令人担忧。这些彩色染料会阻止阳光的射入,危害水生生物。健康问题涉及各种疾病的快速和性价比高的诊断。在这些诊断中,使用简单、经济高效的设备检测肌酸酐(生物分子)对研究人员来说意义重大。肌酸酐是哺乳动物的肌肉代谢废物,分子量为113.12。它在肌肉中产生,通过血液运输,并在尿液中通过肾脏过滤。长期以来,它一直被认为是肾脏和肌肉疾病的生物标志物,因为它在血清中的较高水平表明肾脏功能障碍,而较低水平表明肌肉问题。因此,本研究主要致力于对上述问题做出贡献,具体如下。1.具有大比表面积和多孔结构的材料有益于提高吸附和分离性能。在这项工作中,使用ZIF-67作为牺牲模板,通过一步溶剂热法制备了Co-Ni LDH中空结构,并用于去除水中的有机污染物(甲基橙染料MO)和肌酸酐(生物)传感。所制备的Co-Ni LDH样品在一般条件下90分钟内对MO分子表现出优异的去除性能(92.6%),这是由于吸附和光催化过程的协同作用。双功能行为是由于其表面带正电荷、比表面积大、孔径优化以及中空的结构,而且材料中的Co/Co和Ni/Ni离子为吸附和光催化提供了丰富的位点。此外,Co-Ni LDH中空结构在多次循环后保持了高的去除能力和结构完整性。此外,首次在便携式电化学设备中,使用丝网印刷碳电极上的循环伏安法,研究了Co-Ni LDH中空结构作为肌酸酐(生物)传感的传感器。在这些传感器中,Co-Ni LDH中空结构在500-1000 n M的线性检测范围内表现出高灵敏度(1.23μA/cm.n M)、低检测限(243.5 p M)和低定量限(812 p M)。因此,制备的样品Co-Ni LDH在处理废水污染和临床分析方面显示出巨大的潜力。2.在这项工作中,使用涂覆有聚苯乙烯泡沫(即包装材料废料)和锐钛矿相V-Ti O2微针的复合受体的一次性丝网印刷碳电极,设计了一种小型、经济高效且一次性的电化学肌酸酐传感器,采用溶胶-凝胶化学方法合成了钒参杂的Ti O微针,并用FTIR、PXRD和SEM对其进行了表征。电化学传感器能够在7.4 p H和室温下监测标准氧化还原溶液中的1–25μM肌酸酐。电化学测量是使用安卓智能手机中的便携式恒电位仪进行的。测量循环伏安法和微分脉冲伏安法所示的性能来监测肌酸酐的浓度。该传感器显示出30.95±1.73μA/cmμM的出色肌酸酐灵敏度和184 n M肌酸酐的极低阈值检测限。因此,这项工作可能会为肾功能衰竭和肌营养不良的常规监测和临床诊断提供一种负担得起的POC(检测)方案。
This study describes the adsorption behavior of three arylthiophene derivatives namely:2-(4-amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride salt(MA-1217),2-(4-amidinophenyl)-5-[4-chlorophenyll t...
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This study describes the adsorption behavior of three arylthiophene derivatives namely:2-(4-amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride salt(MA-1217),2-(4-amidinophenyl)-5-[4-chlorophenyll thiophene dihydrochloride salt(MA-1316) and 2-(4-amidino-3-fluorophenyl)-5-[4-ch lorophenyllthiophene dihydrochloride salt(MA-1312) at C-steel in 1.0 mol·L^(-1) HCl interface using experimental and theoretical *** and mass loss measurements showed that the inhibition efficiency(IE) of the arylthiophene derivatives increases with increasing concentrations and exhibited maximum efficiency 89% at 21×10^(-6) mol·L^(-1)(MA-1217) by mass loss *** investigated arylthiophene derivatives obey the Langmuir adsorption *** polarization studies the arylthiophene derivatives act as mixed-type *** analysis were carried out and *** mode of orientation and adsorption of inhibitor molecules on C-steel surface was studied using molecular dynamics(MD) *** chemical parameters as well as the radial distribution function indices and binding energies confirm the experimental results.
Nitrogen(N),the building block of plant proteins and enzymes,is an essential macronutrient for plant functions.A field experiment was conducted to investigate the impact of different N application rates(28,57,85,114,1...
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Nitrogen(N),the building block of plant proteins and enzymes,is an essential macronutrient for plant functions.A field experiment was conducted to investigate the impact of different N application rates(28,57,85,114,142,171,and 200 kg ha^(−1))on the performance of spring wheat(***-2016)during the 2017–2018 and 2018–2019 growing seasons.A control without N application was kept for *** years mean data showed optimum seed yield(5,461.3 kg ha^(−1))for N-application at 142 kg ha^(−1) whereas application of lower and higher rates of N did not result in significant and economically higher seed yield.A higher seed yield was obtained in the 2017–2018(5,595 kg ha^(−1))than in the 2018–2019(5,328 kg ha^(−1))growing seasons under an N application of 142 kg ha^(−1).It was attributed to the greater number of growing degree days in the first(1,942.35°C days)than in the second year(1,813.75°C).Higher rates of N(171 and 200 kg ha^(−1))than 142 kg ha^(−1) produced more number of tillers(i.e.,948,300 and 666,650 ha^(−1),respectively).However,this increase did not contribute in achieving higher *** of 142,171,and 200 kg ha^(−1) resulted in 14.15%,15.0%and 15.35%grain protein concentrations in comparison to 13.15%with the application of 114 kg ha^(−1).It is concluded that the application of N at 142 kg ha^(−1) could be beneficial for attaining higher grain yields and protein concentrations of wheat cultivar Ujala-2016.
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