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Rheology of Almond (Prunus amygdalus) Oil used as Biodegradable Lubricant 杏仁油作为可生物降解润滑剂的流变学研究
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390518
Ioana Stanciu*
Almond (Prunus amygdalus) oil is recommended for those for whom other treatments to remedy hair loss problems have not worked. Almond oil was studied at increasing temperatures and shear rates and we obtained the rheological parameters corresponding to the oil through regression. This paper reflects a study on the rheology of almond oil used as biodegradable lubricant using the Brookfield RVDV II I Ultra Rheometer system.
杏仁油被推荐给那些其他治疗脱发的方法都不起作用的人。对杏仁油在不同温度和剪切速率下进行了研究,通过回归得到了与之相对应的流变参数。本文采用Brookfield RVDV II II超流变仪系统对杏仁油作为可生物降解润滑剂的流变学进行了研究。
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引用次数: 0
DFT study of Lithium, Sodium and Potassium salts of Amino Acids; Global Reactivity Descriptors, Optimized parameters and Hydration Free Energy 氨基酸锂盐、钠盐和钾盐的DFT研究全局反应性描述符,优化参数和水化自由能
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390528
Mahendra Bapurao Dhande, G Krishna Chaitanya, Dipak Tukaram Tayade, Pavan Vijay Raut
A promising solvent for removing CO2 from flue gases after combustion is aqueous solutions of amino acid salts of alkali metals. Their computational work would be extremely significant in this area. Amino acid salts of alkali metals are being explored in aqueous solutions for post-combustion CO2 capture from flue gases. In this regard, their computational study would be of the utmost importance. The hydration free energies, total dipole moment, HOMO/LUMO band gap energy, C=O vibration of the –COOH group, bond lengths and bond angles for lithium, sodium and potassium cysteinate and prolinate were computed in the current work using the Gaussian 09 program. Study shows that the hydration free energy for potassium saltsisless than that of corresponding lithium and sodium salts. From result it could be stated that the change of alkali metal(Na/ K)in amino acid saltsare changing the physical structural and vibrational characteristics of amino acid salts. This study would be helpful for their evaluation as a CO2 capturing agent.
从燃烧后的烟气中去除CO2的一种很有前途的溶剂是碱金属氨基酸盐的水溶液。他们的计算工作在这个领域将是非常重要的。正在探索碱金属氨基酸盐的水溶液,用于从烟道气中捕获燃烧后的二氧化碳。在这方面,他们的计算研究将是至关重要的。本文采用高斯09程序计算了半胱氨酸锂、半胱氨酸钠、半胱氨酸钾和脯氨酸锂的水化自由能、总偶极矩、HOMO/LUMO带隙能、-COOH基团的C=O振动、键长和键角。研究表明,钾盐的水化自由能小于相应的锂盐和钠盐。结果表明,氨基酸盐中碱金属(Na/ K)的变化改变了氨基酸盐的物理结构和振动特性。本研究将有助于其作为CO2捕集剂的评价。
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引用次数: 0
Elegant Explorations of Ionic Liquids in the Expeditious Synthesis of Fe3O4 Nanoparticles 离子液体在Fe3O4纳米颗粒快速合成中的优雅探索
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390533
Sangita R. Bhirud, Chandrakant H. Sarode, Gaurav R. Gupta, Rakesh P. Chaudhari, Ganesh R. Chaudhari
Ionic liquids (ILs) are becoming an innovative and attractive synthesis medium for inorganic nano-materials, allowingmore efficient, environmentally benign and sustainable preparation of high quality nano-materials. The present study explores the potentials of imidazolium ionic liquids as a stabilized reaction medium in the synthesis of metal oxide nanoparticles. Furthermore, a detail explanation regarding the methods of modifying surfaces with ILs of varying chain length for the formation of Fe3O4 nanoparticles have been addressed.
离子液体正成为无机纳米材料的一种创新和有吸引力的合成介质,可以更高效、环保和可持续地制备高质量的纳米材料。本研究探讨了咪唑离子液体作为稳定反应介质在金属氧化物纳米颗粒合成中的潜力。此外,还详细解释了用不同链长的il修饰表面以形成Fe3O4纳米颗粒的方法。
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引用次数: 0
Eco-friendly Synthesis of Strontium Oxide Nanoparticles using Solanum nigrum Leaf Extract: Characterization and Antibacterial Potential 利用茄叶提取物环保合成氧化锶纳米颗粒:表征及其抗菌潜力
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390531
A. Kasthuri, P. Pandian
In this study, strontium oxide nanoparticles (SrO NPs) were successfully synthesized using Solanum nigrum leaf extract. The extract acted as a stabilizing agent during the synthesis process. Characterization techniques such as FTIR spectroscopy confirmed the existence of functional groups of the nanoparticles. Photon Correlation Spectroscopy analysis revealed an average particle size of 94.8 nm with a polydisperse distribution. SEM images showed the morphology of the nanoparticles, ranging from individual particles to agglomerates. XRD analysis indicated a cubic crystal structure for the SrO NPs. Importantly, the synthesized SrO NPs exhibited significant antibacterial activity against Mycobacterium TB, Candida albicans, and E. coli, highlighting their potential as antimicrobial agents. This eco-friendly approach utilizing Solanum nigrum extract opens up possibilities for the green synthesis of SrO NPs with promising biomedical applications.
本研究以茄叶提取物为原料,成功合成了氧化锶纳米颗粒。该提取物在合成过程中起到稳定剂的作用。表征技术如FTIR光谱证实了纳米颗粒官能团的存在。光子相关光谱分析显示,其平均粒径为94.8 nm,具有多分散分布。扫描电镜图像显示了纳米颗粒的形态,从单个颗粒到团块。XRD分析表明SrO NPs为立方晶体结构。重要的是,合成的SrO NPs对结核分枝杆菌、白色念珠菌和大肠杆菌具有显著的抗菌活性,突出了它们作为抗菌药物的潜力。这种利用龙葵提取物的环保方法为绿色合成具有生物医学应用前景的SrO NPs开辟了可能性。
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引用次数: 0
Synthesis of Schiff bases Derivatives of 1,3-oxazepine and Evaluation of Antioxidant Action In vitro 1,3-恶氮平席夫碱衍生物的合成及体外抗氧化作用评价
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390534
Sarvesh Kumar Singh, Neelima Mishra, Govind Nayak, Parulben Mehta
The objective of this work was to synthesize new 1,3-oxazepine derivatives and evaluate the antioxidant activity of the synthesized compounds. The synthesis of Schiff’s base of oxazepine was achieved in four steps involving condensation of aniline and benzaldehyde followed by (2+5) cycloaddition occurs between the imine and anhydride leading to the formation of 1,3-oxazepine-4,7-dione. Later the oxazepine dione undergoes condensation with thiosemicarbazide and finally nucleophilic addition of active carbonyl group to form Schiff’s bases. The synthesized compounds 8a-e were obtained in yield ranging from 69-77%. The antioxidant activity of the compounds was evaluated at various concentrations (100-500µg/mL) using DPPH radical scavenging assay and hydroxy radical scavenging assay. The compounds had IC50 in the range of 34.297 µg to 131.04 µg in the DPPH scavenging assay whereas the IC50 ranged of 49.943 µg to 153.13 µg in the hydroxy radical scavenging assay.
本工作的目的是合成新的1,3-恶氮平衍生物,并评价所合成化合物的抗氧化活性。在苯胺和苯甲醛缩合后,亚胺和酸酐之间发生(2+5)环加成,生成1,3-恶氮平-4,7-二酮,从而合成恶氮平的希夫碱。随后,恶氮平二酮与硫脲缩合,最后是活性羰基的亲核加成,形成希夫碱。合成的化合物8a-e的收率为69 ~ 77%。采用DPPH自由基清除法和羟基自由基清除法测定不同浓度(100-500µg/mL)下化合物的抗氧化活性。DPPH清除率IC50为34.297 ~ 131.04µg,羟基自由基清除率IC50为49.943 ~ 153.13µg。
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引用次数: 0
Visualizing Structure Models and Patterson Densities in four WS2 Polymorphs: Metastable (1T’, 4M) and Stable (2H, 3R) Phases 四种WS2多晶的可视化结构模型和Patterson密度:亚稳态(1T′,4M)和稳定(2H, 3R)相
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390521
Manu Kumar Bhandoria, Ravi Kumar Rana, Hari Shankar, Yashpal Sharma, Jitendra Gangwar
3-dimensional atomic and electronic structures of four crystalline WS2 phases are rendered using VESTA program. In this study, a comprehensive investigation for visualizing structure models and Patterson densities in metastable 1T’- and 4M-WS2 phases and elucidate comparison to stable 2H- and 3R-WS2 phases. Structure models are provided in Stick, Space-filling, Ball-and-stick and Polyhedral representations with size of atoms based on their atomic radii. Analysis on type of W-S coordination (WS6) polyhedra reveals that metastable WS2 phases are composed of distorted octahedra and for stable WS2 phases it is perfect trigonal prisms. Moreover, evidence of different stacking sequences in WS2 polymorphs is also visualized. Patterson densities are exploited from model-electron and -nuclear densities are demonstrated in Wireframe representation by optimizing the interatomic distances. These studies not only evidence the structural characteristics influencing the construction of four WS2 polymorphs, but also provide an ideal platform for both fundamental and application-oriented research.
利用VESTA程序绘制了四种WS2晶体相的三维原子和电子结构。在本研究中,全面研究了亚稳态1T′-和4M-WS2相的可视化结构模型和Patterson密度,并阐明了与稳定的2H-和3R-WS2相的比较。结构模型以棒状、空间填充、球棍状和多面体表示形式提供,原子的大小基于原子半径。对W-S配位(WS6)多面体类型的分析表明,WS2的亚稳相是由畸变八面体组成的,而WS2的稳定相是由完美的三角棱镜组成的。此外,还可视化了WS2多态中不同堆叠序列的证据。帕特森密度由模型得到,电子密度和核密度通过优化原子间距离在线框图中得到展示。这些研究不仅证明了影响4种WS2多晶构建的结构特征,而且为基础研究和面向应用的研究提供了理想的平台。
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引用次数: 0
Beneficiation of Coal with Biochemical Method and Effect of Treated Coal on Boiler Efficiency in Power Generatation 煤的生化选矿及处理后煤对发电锅炉效率的影响
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390506
Gangadhara Reddy Ulavapalli, Rambabu Koyilapu, G. V. Subba Reddy, T. Gouri Chran, V. Murali Krishna, Sreedhar Reddy Duvvuri
In India it has become a major challenging task in majority of thermal power stations to maintain heat rate as per design norms due to problems associated with coal quality and constraints in operation and maintenance practices. Heat rate refers to the amount of heat required to generate one unit of power which mainly depends upon coal quality. Boiler efficiency and heat rate are mainly influenced by key quality parameters of the coal that is ash, moisture, volatile matter, net calorific value of coal, ratio of fixed carbon to volatile matter and grindability of coal. In this research study an effort is being made to improve coal quality by using bio-extracts derived from leaves of citrus limon in combination with lower concentrations of Ethylene Diamine Tetra Acetic Acid (EDTA) and compare boiler efficiency/heat rate with raw and beneficiated coals. Phyto extract derived from citrus limon is effective in demineralizing Aluminium and Pyrite minerals in coal and EDTA is successful for removal of Calcium and Magnesium mineral components of coal and hence calorific value of coal is increased. Results suggesting that usage beneficiated coals improving the boiler efficiency and reducing the heat rate of the thermal unit there by crores of rupee can be saved.
在印度,由于煤炭质量问题以及运行和维护实践的限制,大多数热电站保持按照设计规范的热率已成为一项具有挑战性的主要任务。热率是指发电单位所需的热量,主要取决于煤质。煤的灰分、水分、挥发物、净发热量、固定碳与挥发物之比、煤的可磨性等关键质量参数,是影响锅炉效率和热效率的主要因素。在这项研究中,正在努力通过使用从柑橘柠檬叶中提取的生物提取物与较低浓度的乙二胺四乙酸(EDTA)相结合来改善煤质,并将锅炉效率/热率与原煤和选煤进行比较。从柑橘柠檬中提取的植物提取物对煤中的铝、黄铁矿有较好的脱矿作用,EDTA对煤中的钙、镁矿物成分有较好的脱矿作用,从而提高了煤的热值。结果表明,使用选矿煤可以提高锅炉效率,降低热机的热率,节省了千万卢比。
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引用次数: 0
Nanocellulose from Agricultural Waste – A Concise Insight into Extraction and Applications 农业废弃物中纳米纤维素的提取与应用
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390522
Amit Tiwari, J. Sanjog
Uncontrolled dumping of agricultural wastes is a cause of concern for the well-being of the environment. Nanotechnology has gained research popularity due to its beneficial applications. Nowadays the separation of nanocellulose from different agricultural wastes is explored in an increasing measure. Agricultural wastes are subjected to various treatments to extract nanocellulose. Nanocellulose extracted from agricultural wastes can be used in the preparation of biodegradable nanocellulose-based materials (for various applications) which are environment-friendly and can promote sustainable economic growth by ensuring the good usage of agricultural wastes.
不加控制地倾倒农业废料引起了人们对环境福祉的关注。纳米技术由于其有益的应用而获得了广泛的研究。目前,人们对从不同农业废弃物中分离纳米纤维素进行了越来越多的探索。对农业废弃物进行各种处理以提取纳米纤维素。从农业废弃物中提取的纳米纤维素可用于制备可生物降解的纳米纤维素基材料(用于各种用途),这些材料既环保,又能通过保证农业废弃物的良好利用来促进经济的可持续增长。
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引用次数: 0
Phytochemical Screening and In-vitro Antibacterial Activity Evaluation of Lantana Camara Linn. Leaf Extract 植物化学筛选及体外抗菌活性评价叶提取
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390527
Swetha Kappala, Ashok Gorja, Swathi Mukurala, Nameera Jabeen, Jahnavi Bandla
With both antibiotic-susceptible and -resistant bacteria, the antimicrobial activity of plant extracts and phytochemicals was assessed. The activity of leaves of Lantana camara was found by using two different solvents i.e. petroleum ether, and ethanol. Lantana camara is a traditional medicinal plant that was determined against two bacterial strains both the solvent extracted by using the Soxhlet apparatus. Its activity tested against two organisms they are Staphylococcus aureus and Escherichia coli. The activity was determined by inhibition zone by using a standard drug [Amoxicillin]. The extract used inhibited the growth of two organisms to a maximum level. An analysis of the phytochemistry reveals the presence of terpenoids, tannins, and saponins. These substances are thought to be in charge of the leaf extracts' broad-spectrum activity.
用抗生素敏感菌和耐药菌对植物提取物和植物化学物质的抗菌活性进行了评估。用石油醚和乙醇两种不同的溶剂对大灯笼叶的活性进行了研究。摘要用索氏法测定了传统药用植物大黄的两种细菌。对金黄色葡萄球菌和大肠杆菌进行了活性试验。用标准药物[阿莫西林]用抑菌带测定其活性。所使用的提取物最大程度地抑制了两种生物体的生长。植物化学分析揭示了萜类化合物、单宁和皂甙的存在。这些物质被认为是负责叶提取物的广谱活性。
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引用次数: 0
Preparation of GBSA (Guargum 1-butane sulphonic acid) Resin and Study of Their Physicochemical Characterization and Use for Removal of Toxic metal from Effluents 1-丁烷磺酸树脂的制备、理化性质及对废水中有毒金属的去除研究
Q4 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2023-10-30 DOI: 10.13005/ojc/390515
Sunita Gaur, Renu Joshi, Aresh Vikram Singh
The adsorption behavior of a functional group 1-butane sulphonic acid, is used for synthesis of the natural resin based on guar gum is GBSA resin. Many hazardous metal ions have been studied utilizing batch method and column separation experiment. The Gaur gum-based resin (GBSA) was evaluated based on its bulk density, FTIR spectra, and ion exchange capability. The hazardous metal ions have been removed from industrial effluents using GBSA resin. The resin utilized to remove iron and cobalt metal from contaminated water using GBSA resin. Iron metal ions show maximum adsorption on GBSA resin at pH 5 while cobalt metal ion show maximum adsorption at pH 6.This paper described about removal of iron and cobalt metal ion on GBSA resin.
对一个官能团1-丁烷磺酸的吸附行为,是用瓜尔胶合成的天然树脂为基础的GBSA树脂。利用间歇法和柱分离实验对多种有害金属离子进行了研究。根据其体积密度、FTIR光谱和离子交换能力对gsa进行了评价。利用GBSA树脂去除工业废水中的有害金属离子。该树脂利用GBSA树脂去除污染水中的铁和钴金属。pH值为5时,金属铁离子在GBSA树脂上的吸附量最大,而金属钴离子在pH值为6时吸附量最大。本文介绍了GBSA树脂对铁、钴金属离子的去除。
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引用次数: 0
期刊
Oriental Journal Of Chemistry
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