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Ibuprofen/β-CD complexation by controlled annealing of their mechanical mixture 布洛芬/β-CD机械混合物的控制退火络合
Bulgarian Chemical Communications Pub Date : 2019-01-01 DOI: 10.34049/bcc.51.3.4907
Stiliyana Pereva, Tsveta Sarafska, V. Petrov, M. Spassova, S. Bogdanova, T. Spassov
{"title":"Ibuprofen/β-CD complexation by controlled annealing of their mechanical mixture","authors":"Stiliyana Pereva, Tsveta Sarafska, V. Petrov, M. Spassova, S. Bogdanova, T. Spassov","doi":"10.34049/bcc.51.3.4907","DOIUrl":"https://doi.org/10.34049/bcc.51.3.4907","url":null,"abstract":"Ibuprofen/β-cyclodextrin complex was formed applying a modified melting method, consisting in melting only the drug in the mechanical mixture of ibuprofen and β-cyclodextrin. The ibuprofen inclusion into β-CD was monitored by differential scanning calorimetry after initial release of the water molecules from the CD cavity and was proved by X-ray diffraction and FTIR analyses. Keywords: β-cyclodextrin, ibuprofen, inclusion complex, melting method","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75588797","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: 0
Rapid photocatalytic degradation of methylene blue, tartrazine and brilliant green dyes by high-flux UV irradiation photolysis reactor 高通量紫外光解反应器快速光催化降解亚甲基蓝、酒黄石和艳绿染料
Bulgarian Chemical Communications Pub Date : 2019-01-01 DOI: 10.34049/bcc.51.3.4683
R. Rehman, W. uz-Zaman, A. Abbas, L. Mitu
{"title":"Rapid photocatalytic degradation of methylene blue, tartrazine and brilliant green dyes by high-flux UV irradiation photolysis reactor","authors":"R. Rehman, W. uz-Zaman, A. Abbas, L. Mitu","doi":"10.34049/bcc.51.3.4683","DOIUrl":"https://doi.org/10.34049/bcc.51.3.4683","url":null,"abstract":"The aim of this work was to investigate the removal of dyes from wastewater by photocatalytic degradation using a modified assembly of photolysis reactor. It was more efficient and dye degradation occurred very fast. UV/Visible spectrophotometry was used to monitor the reaction. The degradation of dyes with different catalysts was compared and found to follow first-order kinetics. The optimal result for Methylene Blue was t(1/2)=4 min, k = 0.4471 min-1, R2 = 0.9650, for Tartrazine - t(1/2) = 1.2 min, k = 0.9723 min-1, R2 = 0.9980 and for Brilliant Green - t(1/2) = 0.8 min, k = 0.9716 min-1, R2 = 0.9938. So, it can be efficiently employed on a larger scale. Keywords: Methylene Blue, Tartrazine, Brilliant Green, Photolysis, Degradation.","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87459683","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: 5
Air pollution monitoring with mosses in Western Rhodopes, Bulgaria 保加利亚西罗多彼岛用苔藓监测空气污染
Bulgarian Chemical Communications Pub Date : 2019-01-01 DOI: 10.34049/BCC.51.2.5043
N. Gribacheva, G. Gecheva, V. Stefanova
{"title":"Air pollution monitoring with mosses in Western Rhodopes, Bulgaria","authors":"N. Gribacheva, G. Gecheva, V. Stefanova","doi":"10.34049/BCC.51.2.5043","DOIUrl":"https://doi.org/10.34049/BCC.51.2.5043","url":null,"abstract":"For the first time a complex study of the bioaccumulation of 22 macro- and microelements, as well as of 18 rare earth and radioactive elements in mosses was applied in the territory of Western Rhodopes. The research is a part of the international program (ICP Vegetation, UNECE) that has been carried out in most of the European countries since 1987. Certain local emitters like old and open mines, serpentines, as well as cross-border transmission were identified. In addition, highest concentrations of radioactive elements were registered in the area of an old uranium mine and most elevated sites, probably due to increased wet deposition. Both heavy metals and toxic elements, as well as radioactive elements maxima were lower than measured highest levels for Bulgaria and Europe. In such studies, inductively coupled plasma spectrometry (ICP-OES, ICP-MS) could be recommended.","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84084166","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
Hofmeister anions effect on the thickness and morphology of polyelectrolyte multilayers for biofunctionalization of cardiovascular stents 霍夫迈斯特阴离子对心血管支架生物功能化聚电解质多层膜厚度和形态的影响
Bulgarian Chemical Communications Pub Date : 2016-01-01 DOI: 10.15496/PUBLIKATION-17850
R. Krastev
{"title":"Hofmeister anions effect on the thickness and morphology of polyelectrolyte multilayers for biofunctionalization of cardiovascular stents","authors":"R. Krastev","doi":"10.15496/PUBLIKATION-17850","DOIUrl":"https://doi.org/10.15496/PUBLIKATION-17850","url":null,"abstract":"23 Hofmeister anions effect on the thickness and morphology of polyelectrolyte multilayers for biofunctionalization of cardiovascular stents T. D. Andreeva*, A. K. Danailova, P. Terziyska, S. B. Krumova, S. G. Taneva, R. Krastev 1 Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 21, 1113 Sofia, Bulgaria 2 Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72, Tzarigradsko Chaussee, Blvd., 1784 Sofia, Bulgaria 3 The Natural and Medical Sciences Institute at the University of Tübingen (NMI), department “Biomaterials”, Markwiesenstraße 55, 72770 Reutlingen, Germany 4 Reutlingen University, Faculty of Applied Chemistry, Alteburgstraße 150, 72762 Reutlingen, Germany","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"2014 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86839832","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
Synthesis, crystal structure and theoretical study of two isomeric poly-substituted derivatives of 1,4-dihydropyridine 1,4-二氢吡啶两个异构体多取代衍生物的合成、晶体结构及理论研究
Bulgarian Chemical Communications Pub Date : 2013-01-01 DOI: 10.15496/publikation-1348
Stefan A. Dochev, M. Ströbele, H. Meyer
{"title":"Synthesis, crystal structure and theoretical study of two isomeric poly-substituted derivatives of 1,4-dihydropyridine","authors":"Stefan A. Dochev, M. Ströbele, H. Meyer","doi":"10.15496/publikation-1348","DOIUrl":"https://doi.org/10.15496/publikation-1348","url":null,"abstract":"2, V = 0.8584(3) A 3 . The spectral behavior of the optimized structures of these compounds was reproduced by the hybrid DFT method B3LYP and HF method both with 6-31G basis set and some semi-empirical methods for comparison. The theoretical spectra were compared with the experimental ones.","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"15 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72401818","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: 0
ELECTRON PARAMAGNETIC RESONANCE (EPR) STUDY OF REDUCTIVELY ALKYLATED BITUMINOUS COALS 还原烷基化烟煤的电子顺磁共振研究
Bulgarian Chemical Communications Pub Date : 1996-01-01 DOI: 10.1016/s0140-6701(00)95338-4
S. Marinov, M. Stefanova
{"title":"ELECTRON PARAMAGNETIC RESONANCE (EPR) STUDY OF REDUCTIVELY ALKYLATED BITUMINOUS COALS","authors":"S. Marinov, M. Stefanova","doi":"10.1016/s0140-6701(00)95338-4","DOIUrl":"https://doi.org/10.1016/s0140-6701(00)95338-4","url":null,"abstract":"","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"370 1","pages":"326-336"},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80452326","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: 0
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