JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH最新文献

{"title":"Unexpected efficient reactions of nitrogen nucleophiles with α,β-unsaturated nitriles / esters","authors":"Suryasaraswathi K, Saravanan S, Muthusubramanian S","doi":"10.46947/joaasr19201768","DOIUrl":"https://doi.org/10.46947/joaasr19201768","url":null,"abstract":"α,β-Unsaturated compounds containing aldehyde, ketone, nitrile and ester functional groups are versatile precursor for the synthesis of novel organic molecules. All these compounds undergo Michael addition of carbon and other nucleophiles at b-carbon atom of the a,b-unsaturated system. Different carbo- and hetero-cyclic compounds can be synthesized by varying the conditions of cyclisation of the Michael adducts. In this context, it is planned to synthesize pyrazole derivatives and diazepine derivatives by reacting a,b-unsaturated compounds with different Nitrogen nucleophiles such as, o-phenylenediamine etc. The present investigation reports the unexpected hydrogenation of C=C in a,b-unsaturated nitriles and the unexpected synthesis of azine derivatives from a,b-unsaturated nitrileand hydrazinium sulphate.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133964858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of Machine industrial from wastewater using cylindrical flow reactor by electrochemical oxidation and optimization of treatment conditions","authors":"Kalaivanan C, Yosuva Suvaikin M","doi":"10.46947/joaasr17201758","DOIUrl":"https://doi.org/10.46947/joaasr17201758","url":null,"abstract":"This work examines the use of electrooxidation for treatment of wash water obtained from industry. Cutting oil was mainly found in the wastewater. The effluent was treated using NaCl as supporting electrolyte using a cylindrical flow reactor in continuous (single pass) mode under various current densities (2-5 A/dm2) and different flow rate (10-40 L/h).  By cyclic voltammetric (CV) analysis, the best condition for maximum redox reaction was found. Efficiency of COD reduction and power consumption were studied for each operating conditions. From the results maximum COD reduction of about 93.3 % was obtained at a flow rate of 10 L/h with applied current density of 4 A/dm2. FT-IR spectra studies showed that during electrooxidation, the intensities of characteristic functional groups such as C-H, O-H were reduced and also some new peaks comes to appear. Probable theory, reaction mechanism and modeling were proposed for the oxidation of machine industrial effluent. All the experimental results have indicated that electrooxidation treatment was very effective and was capable of elevating quality of the treated wastewater effluent to the reuse standard of the machine industry.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114691612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antioxidant potentials of successive green solvent extracts from the unexplored Ficus subincisa","authors":"Priyanka Pokhriyal, Abha Shukla, Rishi Kumar Shukla","doi":"10.46947/joaasr312021115","DOIUrl":"https://doi.org/10.46947/joaasr312021115","url":null,"abstract":"Ficus subincisa Buch-Ham.Ex Sm. is considered an endemic medicinal plant. The current researchbased on the antioxidant potential of four different green solvent extracts obtained by the successive solventextraction method from the unexplored F.subincisa leaves was evaluated. Various in vitro assays wereperformed to achieve the aim and variation in scavenging potential of the four green extracts, showed thehighest total phenolic content (TPC), Total flavonoid content (TFC), and free radical scavenging potentialagainst DPPH, ABTS, FRAP Phosphomolybdate, and nitric oxide radical scavenging assay as compared toother extracts.The extraction of Ficus subincisa with different green solvents namely: d-limonene, isopropylalcohol, ethyl lactate, and hydroalcohol.Extracts were evaluated for their antioxidant activity using differentassays namely, DPPH, ABTS, and nitric oxide scavenging. The Folin-Ciocalteau and AlCl3 colorimetricmethods were measured the content of total phenolics and total flavonoids respectively. Reducing power wasdetermined by phosphomolybdate and Ferric reducing antioxidant power (FRAP) methods.Considerableamount of phenolic and flavonoid contents were recorded in the hydroalcohol extract. Although hydroalcoholfractions exhibited good antioxidant activities, the most distinguished radical scavenging potential.Hydroalcohol sowed equivalent to standard in radical scavenging activity by DPPH. Hydroalcohol showedthe higher radical scavenging activity by DPPH (92.03%), Nitric oxide (89.21%) and by ABTS (89.45%),antioxidant activity, the highest total phenols content (78.67 ± 1.07 mg GAE/g fraction), the highest totalflavonoids content (195.58 ± 3.31 mg quercetin equivalent/g extract fraction). The hydroalcohol extractshowed a reducing power of (93.2%) and (1373.91 ± 4.35 µM/ml Ascorbic acid equivalent) using thephosphomolybdate and FRAP assays, respectively.Hydroalcohol shows the strongest antioxidant activity, andit can be attributed to its high content in phenolic and flavonoid compounds. It can be concluded that leavesof Ficus subincisa can be used as an effective natural source of antioxidant, and as a commercial basis for theevolution of nutraceuticals","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121192619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mixtures of Normal Distributions: Application to Diving Suit Fitting","authors":"Ammar Y. Alqahtani, Albraa A. Rajkhan","doi":"10.46947/joaasr262020110","DOIUrl":"https://doi.org/10.46947/joaasr262020110","url":null,"abstract":"In this paper, a mixture of normal distributions is performed to analyze the characteristics of population data in Jeddah, Saudi Arabia, to accommodate the diving suits fitting for consumers. It is not easy to collect consumers’ data since it takes time and effort as well as cost a lot. For such a business, the order quantity is financially critical because diving suits sizes are different from a location to another, which based on population data. In fact, the business cannot rely on one factor, whether the weight or height of the consumer to find the best fit size, both are needed. Thus, a random sample represents the whole population of the city of Jeddah with acceptable error is generated. Then a mixture distribution was applied for the generated data of all factors (weight & height) to solved the issues and improved the order quantity to serve the consumers better as well as minimize cost and increase the profit of the business.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128245680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of physico-chemical and biological properties of mangrove rhizosphere and saltpan sediments from palk bay region southeast coast of India","authors":"Dr. P Santhanam, Premkumar C","doi":"10.46947/joaasr110201783","DOIUrl":"https://doi.org/10.46947/joaasr110201783","url":null,"abstract":"The present study was carried out to determine the physico- chemical characteristics of sediments samples collected from mangrove ecosystem and artificial saltpan environment of Kattumavadi, Southeast coast of India. The mangrove and salt pan located at kattumavadi is an unexplored area with unique ecological niches and rich in biodiversity. The physico chemical parameters play a vital role in the mangrove ecosystems. The studies revealed that totally 8 sediments samples were collected from mangrove and saltpan and analysed for the nature of the sediments samples include texture, physico chemical properties and biological properties. The study reveal that the well structured mangrove sediments have more density of the actinomycetes.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129683457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study on adsorption of safranine and amaranth dyes from aqueous solution using activated carbon prepared from cocunut shell and palmyra fruit nut shell- a comparitive view","authors":"Dr.Vasuki M, Elamathi T, Nandhine Deve K. R","doi":"10.46947/joaasr17201755","DOIUrl":"https://doi.org/10.46947/joaasr17201755","url":null,"abstract":"Dyes are commonly used in textile, paint, paper, plastic, food and cosmetic industries for colouring purpose. Annually around 146000 tonne of dyes are discharged from textile industry itself. These waste water containing lot of dye contents are difficult to degrade. When these industrial effluents reach the environment, they cause mainly water pollution. In the present work, adsorption of Safranine and Amaranth dyes from aqueous solution over activated carbon obtained from cocunut shell(CSC) and palmyra fruit nut shell(PFSC) have been investigated at batch mode experiments. Experimental observations indicate that CSC has greater adsorption capacity of both dyes than PFSC. The kinetic data fitted well with pseudo-second order kinetics and also intra-particle diffusion model.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129784965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brain Tumors Detection on MRI Images through Extracting HOG Features","authors":"Seyed Enayatallah Alavi, Ehsan zare, Mohammad javad Rashti","doi":"10.46947/joaasr21201896","DOIUrl":"https://doi.org/10.46947/joaasr21201896","url":null,"abstract":"In this paper, a system of Computer Aided Diagnosis (CAD) is introduced for detecting brain tumors through MRI images. The proposed system consists of three main sections: segmentation, feature extraction, and categorization. In the segmentation phase, a system called Seeded Region Growing (SRG) is applied to separate brain tissue from other regions. In the feature extraction phase, the Histograms of Oriented Gradients (HOG) algorithm is used. Finally, in order to describe the images of the brain, we use Support Vector Machine (SVM) and classify the images in two tumor-free and tumor-grade groups, and then compare them with similar tasks. The results show a high efficiency of this approach compared to other methods. 850 MRI images have been applied to test and teach samples; the number of healthy brains is 300 and the number of defective brains is 550, and the system has achieved a precision rate of 93.2% in the categorization. ","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129867711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly fireworks for atom bomb (Local name of cracker bomb)","authors":"Srinivasan K","doi":"10.46947/joaasr17201757","DOIUrl":"https://doi.org/10.46947/joaasr17201757","url":null,"abstract":"Most of fireworks composition contains sulphur as a fuel, during combustion reaction with oxidizer it gives sulphur dioxide (SO­2) gas. SO2 gas produces environmental pollution; due to that, less quantity of sulphur to be used in fireworks composition otherwise should be avoided fully. In the atom bomb or crackers formulation the roll of sulphur is most important due to it speed up the reaction and at the same time heat produced by this composition (KNO3,Ba(NO3)2, Al and Sulphur) is less when compared to without sulphur. Even though the sulphur containing formulations are desired by the most of fireworks formulators due to speed of reaction. Environmental concern in this proposed work the amount of sulphur to be reduced/without sulphur for atom bomb/cracker formulations.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128680954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization of form-stable FA ternary eutectic mixture/GO nanocomposite for thermal energy storage","authors":"Mohammad Mohammadiun, Iman Joz Jalalian, Hamid Hashemi Moqadam, Hamid Mohammadiun","doi":"10.46947/joaasr112201792","DOIUrl":"https://doi.org/10.46947/joaasr112201792","url":null,"abstract":"The thermal conductivity of commonly used phase change materials (PCM) for thermal energy storage (TES), such as, fatty acids, paraffin etc., is relatively poor, which is one of the main drawbacks for limiting their utility. In the recent past, few attempts have been made to enhance the thermal conductivity of PCM by mixing different additives in the appropriate amount. Graphene nanoparticles, having higher thermal conductivity may be a potential candidate for the same, when mixed appropriately with different PCM. In present study, acetic acid , tristearin and stearic acid (CA-PA-SA) ternary eutectic mixture was impregnated into nano-graphene oxide (nano-GO) to prepare a form-stable composite PCM (CAPA-SA/nano-SiO2). The phase change temperature range of the composite PCM is 17.2 ◦C–26 ◦C, which is suitable for indoor thermal environment. The high latent heat value and thermal conductivity of the composite PCM are 169.43 kJ kg-1 and 0.68239 W (m K)-1, which is helpful to stabilize the indoor temperature for a long time and improve human comfort. Furthermore, after 500 heating/cooling cycles, the composite PCM showed good thermal and chemical stability. All the results indicated that the composite PCM is suitable for storing excess solar radiation and reducing the amount and rate of heat loss of buildings in the winter, which will help reduce building energy consumption.","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114150990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ reduction synthesis of nanocomposite fiber Nylon 6 and nano silver: focus on antibacterial properties","authors":"Mohsen Hoseinkhani, Ali akbar zolriasatein, Pedram daneshi","doi":"10.46947/joaasr112201794","DOIUrl":"https://doi.org/10.46947/joaasr112201794","url":null,"abstract":"Nanotechnology has been expanded in different industries and created new applications and properties in products. Accordingly, nanocomposites with special properties is very important. Polymeric materials and nanofibers with high special surface are suitable substrates for growing microorganism. This research represents a novel method for simultaneous synthesis of nano-silver by reducing method in caprolactam polymerization process. Hence, caprolactam and reducing agent on sulphur base was used for synthesis of nano silver in one bath by silver salt. Then, nano-composite fibers were prepared by electro-spinning method. FT-IR analysis confirmed structural changes in nylon 6 caused by different conditions of synthesis of nano silver. Moreover, UV-VIS, SEM, EDX, AA were used to study surface morphology. The nanocomposite fibers showed a significant antibacterial activity against gram positive bacteria Staphylococcus aureus. ","PeriodicalId":274343,"journal":{"name":"JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126360489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}