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The Generalized Zagreb Index of Some Carbon Structures 某些碳结构的广义萨格勒布指数
IF 0.5
Acta Chemica Iasi Pub Date : 2018-07-01 DOI: 10.2478/achi-2018-0007
Prosanta Sarkar, Nilanjan De, A. Pal
{"title":"The Generalized Zagreb Index of Some Carbon Structures","authors":"Prosanta Sarkar, Nilanjan De, A. Pal","doi":"10.2478/achi-2018-0007","DOIUrl":"https://doi.org/10.2478/achi-2018-0007","url":null,"abstract":"Abstract In chemical graph theory, chemical structures are model edthrough a graph where atoms are considered as vertices and edges are bonds between them. In chemical sciences, topological indices are used for understanding the physicochemical properties of molecules. In this work, we study the generalized Zagreb index for three types of carbon allotrope’s theoretically.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"126 1-2","pages":"104 - 91"},"PeriodicalIF":0.5,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72454039","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}
引用次数: 14
Impact of Thiocyanate on the Catecholase Activity of Cu(II) and Fe(III) Complexes of 2-((4-(2-Hydroxy-4-Methylbenzyl)Piperazin-1-YL)Methyl)-5-Methylphenol (A Mannich Base) 硫氰酸酯对2-((4-(2-羟基-4-甲基苄基)哌嗪-1- yl)甲基)-5-甲基苯酚(A Mannich碱)Cu(II)和Fe(III)配合物儿茶酚酶活性的影响
IF 0.5
Acta Chemica Iasi Pub Date : 2018-07-01 DOI: 10.2478/achi-2018-0005
A. O. Ayeni, G. M. Watkins
{"title":"Impact of Thiocyanate on the Catecholase Activity of Cu(II) and Fe(III) Complexes of 2-((4-(2-Hydroxy-4-Methylbenzyl)Piperazin-1-YL)Methyl)-5-Methylphenol (A Mannich Base)","authors":"A. O. Ayeni, G. M. Watkins","doi":"10.2478/achi-2018-0005","DOIUrl":"https://doi.org/10.2478/achi-2018-0005","url":null,"abstract":"Abstract Four metal complexes viz Cu(II) and Fe(III) with or without thiocyanate have been synthesized from a Mannich base prepared by a simple synthetic route. These complexes were characterized by elemental and spectroscopic techniques. Bonding modes of the thiocyanate group with the metal complexes as studied by infrared spectroscopy revealed the presence of bridging N- and S- bonding modes. Detailed kinetic studies of these complexes were carried in the evaluation of their catecholase activity. The Fe(III) complex demonstrated the highest catalytic activity using 3,5-di-tert-butyl catechol (3,5-DTBC) as substrate with a turnover rate (kcat) of 112.32 h−1.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"66 1","pages":"59 - 73"},"PeriodicalIF":0.5,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78975057","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}
引用次数: 1
Development and Validation of Spectrophotometric Methods for Simultaneous Estimation of Furosemide and Spironolactone by Vierordt’s Method in Bulk and Combined Tablet Dosage Form Vierordt法同时测定原料片和复方片剂中呋塞米和螺内酯含量的方法的建立与验证
IF 0.5
Acta Chemica Iasi Pub Date : 2018-07-01 DOI: 10.2478/achi-2018-0006
R. Chavan, S. Bhinge, M. Bhutkar, D. Randive
{"title":"Development and Validation of Spectrophotometric Methods for Simultaneous Estimation of Furosemide and Spironolactone by Vierordt’s Method in Bulk and Combined Tablet Dosage Form","authors":"R. Chavan, S. Bhinge, M. Bhutkar, D. Randive","doi":"10.2478/achi-2018-0006","DOIUrl":"https://doi.org/10.2478/achi-2018-0006","url":null,"abstract":"Abstract Anew simple, convenient and suitable spectrophotometric method for simultaneous determination of Furosemide and Spironolactone in combined dosage form has been developed and validated. Simultaneous equation method (Vierordt’s method) was used for determination of Furosemide and Spironolactone in combined dosage form. For spectrophotometric method development double distilled water and ethanol were used as a solvent in the ratio of (20:80). The proposed method was quantitatively evaluated in terms of linearity, precision, accuracy, lower limit of detection (LOD) and quantification (LOQ), recovery and robustness. All the parameters were found to be within the acceptance limit. λmax of Furosemide and Spironolactone was found to be 275 and 237 nm respectively. Beer’s law was obeyed over the concentration ranges of 2-10 μg mL−1 for both Furosemide and Spironolactone respectively. The % assay for commercial formulation was found to be 99.60%±0.0500 for Furosemide and 100.26%±1.17 for Spironolactone by the proposed methods. The overall recovery was observed to be 100.38±0.09% for Furosemide and 100.49±0.4197% for Spironolactone by simultaneous equation method (Vierordt’s method). LOD and LOQ were 0.76 and 2.32 μg mL−1 for Furosemide, 1.99 and 6.04 μg mL−1 for Spironolactone. A new simple, convenient, precise, rapid, accurate and economical and reliable spectrophotometric method was developed and validated for the analysis of Furosemide and Spironolactone in bulk drug and their formulations.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"30 1","pages":"74 - 90"},"PeriodicalIF":0.5,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90546867","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}
引用次数: 8
Oral Ingestion Risks of Heavy Metal Accumulation at Top Soils of Automobile Workshops in Owerri Capital City of Imo State, Nigeria 尼日利亚伊莫州首府奥韦里市汽车车间表层土壤重金属的口服摄入风险
IF 0.5
Acta Chemica Iasi Pub Date : 2018-07-01 DOI: 10.2478/achi-2018-0003
E. Agomuo, P. Amadi
{"title":"Oral Ingestion Risks of Heavy Metal Accumulation at Top Soils of Automobile Workshops in Owerri Capital City of Imo State, Nigeria","authors":"E. Agomuo, P. Amadi","doi":"10.2478/achi-2018-0003","DOIUrl":"https://doi.org/10.2478/achi-2018-0003","url":null,"abstract":"Abstract This investigation was carried out to assess the heavy metal concentrations and health risks associated with automobile workshops in Owerri Metropolis. Using an Atomic Absorption Spectrophotometer, soil samples from Orji Mechanic Village (OMV), Naze Mechanic Village (NMV), New Market Automobile Workshops (NMAV), Matrix Mechanic Yard (MMY) and Alvan Mechanic Yard (AMY) were assayed for Silver (Ag), Cobalt (Co), Nickel (Ni), Mercury (Hg), Lead (Pb), Arsenic (As), Chromium (Cr) and Cadmium (Cd) concentrations. The result showed that at majority of the sites, the Ag, Pb, As, and Cd levels exceeded their baseline values, whereas the Ni and Co levels were equivalent to those of their baselines, at some sites. Soil samples at MMY were the most acidic while that of NMAV was the most alkaline. The pollution models indicated very high Ag contamination at OMV, NMV, and NMAV while all the sites showed very high contamination of Pb and Cd, and no Co, Ni, Hg, and Cr pollution was recorded for all the sites as shown by their Igeo values. The result for the enrichment factor showed anthropogenic sources of deposition of these heavy metals at all the sites. From the risk assessment models applied, none of the contaminated sites showed an estimated daily intake, hazard quotient, and total hazard index beyond the reference values, with Pb found to possess the greatest potentials of toxicity. This study has shown the necessity to periodically monitor and apply measures that can halt the environmental decay, occurring at the automobile workshops.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"60 1","pages":"21 - 44"},"PeriodicalIF":0.5,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73926452","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}
引用次数: 2
Synthesis, Structural and Electrical Studies of Li-Ni-Cu Nano Ferrites Li-Ni-Cu纳米铁氧体的合成、结构和电学研究
IF 0.5
Acta Chemica Iasi Pub Date : 2018-07-01 DOI: 10.2478/achi-2018-0001
Shashidhar N. Adarakatti, Veeresh S. Pattar, Prashant K. Korishettar, B. V. Grampurohit, R. G. Kharabe, A. Kulkarni, S. Mathad, C. S. Hiremath, R. B. Pujar
{"title":"Synthesis, Structural and Electrical Studies of Li-Ni-Cu Nano Ferrites","authors":"Shashidhar N. Adarakatti, Veeresh S. Pattar, Prashant K. Korishettar, B. V. Grampurohit, R. G. Kharabe, A. Kulkarni, S. Mathad, C. S. Hiremath, R. B. Pujar","doi":"10.2478/achi-2018-0001","DOIUrl":"https://doi.org/10.2478/achi-2018-0001","url":null,"abstract":"Abstract Li-Ni ferrite has gained great scientific elicit owing to of its unparalleled properties and applications. The copper doped Li-Ni ferrite has been synthesized by sucrose method. The structure was characterized by X-ray diffraction, which has confirmed the formation of single-phase spinel structure. X-ray diffraction and FTIR data reveals the formation of cubic structure phase. Unit cell parameters vary with copper content; overall variation of the unit cell parameters obeys Vegard’s law. The main absorption bands of spinel ferrite have appeared through IR absorption spectra recorded in the range of 300–700 cm−1. The copper concentration dependence of lattice parameters obeys Vegard’s law. DC electrical resistivity of the prepared samples decreases with increasing in the temperature which shows the semiconducting behaviour of all nano ferrites. The most prominent influence copper doping on the electrical properties of Li-Ni ferrites has been reported.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"os-15 1","pages":"1 - 12"},"PeriodicalIF":0.5,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87195637","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}
引用次数: 3
Morphological and FTIR Studies of Barium Oxalate Single Crystals 草酸钡单晶形貌及红外光谱研究
IF 0.5
Acta Chemica Iasi Pub Date : 2017-12-01 DOI: 10.1515/achi-2017-0016
M. Shedam, R. Shedam, S. Mathad
{"title":"Morphological and FTIR Studies of Barium Oxalate Single Crystals","authors":"M. Shedam, R. Shedam, S. Mathad","doi":"10.1515/achi-2017-0016","DOIUrl":"https://doi.org/10.1515/achi-2017-0016","url":null,"abstract":"Abstract The conditions for the gel growth of barium oxalate single crystals in silica gels were studied in this paper. We describe the growth mechanism, effect concentration of feed solution, interchanging of the reactants, the effect of temperature and detailed study of microstructures of barium oxalate single crystals. At higher concentration of feed solution dense fibers were observed. With interchanged feed solution precipitate and spherulites have been obtained. The effect of temperature on growth barium oxalate crystals showed that there was a decrease in nucleation density at higher temperature. The crystals growth were observed under the electron microscope which revealed that the crystal have needle and spherulites structures. We also report the FTIR studies of barium oxalate crystals.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"12 1","pages":"195 - 207"},"PeriodicalIF":0.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84645855","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}
引用次数: 1
Levels of Metals in Soils of Ait Ammar Iron Mine, Morocco: Human Health Risks 摩洛哥Ait Ammar铁矿土壤中的金属水平:人类健康风险
IF 0.5
Acta Chemica Iasi Pub Date : 2017-12-01 DOI: 10.1515/achi-2017-0012
M. Nouri, T. E. Rasafi, A. Haddioui
{"title":"Levels of Metals in Soils of Ait Ammar Iron Mine, Morocco: Human Health Risks","authors":"M. Nouri, T. E. Rasafi, A. Haddioui","doi":"10.1515/achi-2017-0012","DOIUrl":"https://doi.org/10.1515/achi-2017-0012","url":null,"abstract":"Abstract The concentrations of metals were determined in soil samples collected in Ait Ammar (Oued Zem, Morocco). The mean Cd, Cr, Cu, Fe, Pb and Zn contents in the mining topsoil samples were: 2.12, 135, 34.9, 214, 9.13 and 90.8 mg kg−1, respectively. Human health risks developed from metal ingestion, dermal absorption and inhalation of soils were also evaluated. For non-carcinogenic risks, united hazard index (HI) values for children surpassed the safe level (HI=1) for Cr (13.1). Values for HI in adults (1.74) also surpassed the safe level for Cr. The HI values for Pb and Cd for children were 0.69 and 0.68, respectively. Cancer risk due to Cr surpassed the tolerable range (1E-06 to1E-04) for children (1.05E-03) and for adults (1.42E-04). Cancer risks due to Pb and Cd were within acceptable ranges for both children and adults. Furthermore, oral ingestion of soil particles contributed more highly to both carcinogenic and non-carcinogenic risk from Cr than either dermal absorption or inhalation in both children and adults.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"7 1","pages":"127 - 144"},"PeriodicalIF":0.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83382762","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}
引用次数: 3
Contribution to Casein Determination by UV Spectrophotometry 紫外分光光度法测定酪蛋白的贡献
IF 0.5
Acta Chemica Iasi Pub Date : 2017-12-01 DOI: 10.1515/achi-2017-0011
R. Ştefănescu, Stefania Brebu, M. Matei, I. Risca, A. Surleva, G. Drochioiu
{"title":"Contribution to Casein Determination by UV Spectrophotometry","authors":"R. Ştefănescu, Stefania Brebu, M. Matei, I. Risca, A. Surleva, G. Drochioiu","doi":"10.1515/achi-2017-0011","DOIUrl":"https://doi.org/10.1515/achi-2017-0011","url":null,"abstract":"Abstract In the present paper, the interaction between copper ions and proteins is presented, in order to elaborate a simple and rapid spectrophotometric assay of casein in milk. Under alkaline conditions, copper ions form the biuret complex with the proteins, which can be used in protein determination. Although very specific, the biuret method is less sensitive. Using insoluble copper phosphate, casein is able to extract copper ions, with which it forms the biuret complex, while either the complex or copper ions could be determined in the ultraviolet range. Indeed, an increased absorbance of biuret complex at 215 nm was found. Nevertheless, copper ions can be determined in UV as well, their concentration being proportional to that of casein. When used tetraglycine instead casein, mass spectrometric measurements at pH higher than 11 revealed the formation of complexes with many copper ions bound to each peptide bond-containing molecule. Nevertheless, on diluting the biuret solution the complex may dissociate leading to very complex UV spectra that should be further studied.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"82 1","pages":"112 - 126"},"PeriodicalIF":0.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75788350","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}
引用次数: 13
K2CO3: A Mild and Efficient Catalyst for the Synthesis of Pyran Annulated Heterocyclic Systems by Grinding Method Under Solvent-Free Conditions K2CO3:无溶剂条件下研磨法合成吡喃环杂环体系的温和高效催化剂
IF 0.5
Acta Chemica Iasi Pub Date : 2017-12-01 DOI: 10.1515/achi-2017-0014
R. Heydari, Rohollah Rahimi, M. Kangani, Afshin Yazdani-Elah-Abadi, M. Lashkari
{"title":"K2CO3: A Mild and Efficient Catalyst for the Synthesis of Pyran Annulated Heterocyclic Systems by Grinding Method Under Solvent-Free Conditions","authors":"R. Heydari, Rohollah Rahimi, M. Kangani, Afshin Yazdani-Elah-Abadi, M. Lashkari","doi":"10.1515/achi-2017-0014","DOIUrl":"https://doi.org/10.1515/achi-2017-0014","url":null,"abstract":"Abstract The potassium carbonate was applied as a green and efficient catalyst for the one-pot synthesis of pyran annulated heterocyclic systems, via the condensation between aromatic aldehydes, malononitrile and dimedone/1-naphtole by a grinding method at room temperature and solvent-free conditions. Short reaction times, environmentally friendly procedure and excellent yields are the main advantages of this procedure which makes it more economic than other environmentally synthetic methods.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"15 1","pages":"163 - 178"},"PeriodicalIF":0.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91259058","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}
引用次数: 3
Study of Dendrimers by Topological Indices 树状大分子的拓扑指数研究
IF 0.5
Acta Chemica Iasi Pub Date : 2017-12-01 DOI: 10.1515/achi-2017-0013
N. Soleimani, S. B. Bahnamiri, M. Nikmehr
{"title":"Study of Dendrimers by Topological Indices","authors":"N. Soleimani, S. B. Bahnamiri, M. Nikmehr","doi":"10.1515/achi-2017-0013","DOIUrl":"https://doi.org/10.1515/achi-2017-0013","url":null,"abstract":"Abstract In this paper, five degree based topological indices, the first Zagreb (M1), second Zagreb (M2), first multiple Zagreb (PM1), second multiple Zagreb (PM2), and the hyper Zagreb (HM) indices of two types of dendrimers are studied. In addition, two distance based topological indices, the total eccentricity (θ) and eccentric connectivity (ξc) indices of these dendrimers are computed.","PeriodicalId":6958,"journal":{"name":"Acta Chemica Iasi","volume":"65 1","pages":"145 - 162"},"PeriodicalIF":0.5,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81096549","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}
引用次数: 4
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