Proton-ligand dissociation constants of 4-(4-acetophenyl)hydrazono-3-methyl-2-pyrazolin-5-one (AHMP) and metal-ligand stability constants of its complexes with some transition metal ions were calcu...
{"title":"Thermodynamics of Substituted Pyrazolone : VI. Potentiometric and Conductometric Studies of Complexes of Some Transition Metals with 4-(4-Acetophenyl)hydrazono-3-methyl-1-phenyl-2-pyrazolin-5-one","authors":"A. El‐Bindary, A. El-Sonbati, H. M. Kera","doi":"10.1139/V99-122","DOIUrl":"https://doi.org/10.1139/V99-122","url":null,"abstract":"Proton-ligand dissociation constants of 4-(4-acetophenyl)hydrazono-3-methyl-2-pyrazolin-5-one (AHMP) and metal-ligand stability constants of its complexes with some transition metal ions were calcu...","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"74 1","pages":"239-244"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1139/V99-122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63757209","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}
I. Skrzypek, J. Folwarczna, W. Janiec, I. Kaczmarczyk-Sedlak, A. Máslankiewicz, M. Pytlik
{"title":"1,4-DIHYDRO-1-METHYL-4-THIOXO-3-QUINOLINESULFONAMIDES","authors":"I. Skrzypek, J. Folwarczna, W. Janiec, I. Kaczmarczyk-Sedlak, A. Máslankiewicz, M. Pytlik","doi":"10.1002/CHIN.199838163","DOIUrl":"https://doi.org/10.1002/CHIN.199838163","url":null,"abstract":"","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"165 ","pages":"1127-1130"},"PeriodicalIF":0.0,"publicationDate":"1998-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/CHIN.199838163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50928265","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}
Pub Date : 1998-03-03DOI: 10.4131/JSHPREVIEW.7.263
M. Tkacz
The equilibrium pressure of hydrogen gas above solid face centered cubic (fcc) phase of chromium hydride has been determined at 150°C. As compared to the hexagonal close packed (hcp), chromium hydride plateau for the a+β phase region has been found to be lower by about 500 bars and equal to 0. 25 ± 0. 01 GPa. The search for possible pressure induced phase transition from the fcc to the hcp structure has been unsuccessful up to 37 GPa. The compressibility of the fcc hydride is similar to that of the hcp phase, showing pressure independence of the hydrogen volume in the metal lattice, and confirming the general rule observed in transition metal hydrides.
{"title":"High Pressure Studies of the FCC Chromium Hydride","authors":"M. Tkacz","doi":"10.4131/JSHPREVIEW.7.263","DOIUrl":"https://doi.org/10.4131/JSHPREVIEW.7.263","url":null,"abstract":"The equilibrium pressure of hydrogen gas above solid face centered cubic (fcc) phase of chromium hydride has been determined at 150°C. As compared to the hexagonal close packed (hcp), chromium hydride plateau for the a+β phase region has been found to be lower by about 500 bars and equal to 0. 25 ± 0. 01 GPa. The search for possible pressure induced phase transition from the fcc to the hcp structure has been unsuccessful up to 37 GPa. The compressibility of the fcc hydride is similar to that of the hcp phase, showing pressure independence of the hydrogen volume in the metal lattice, and confirming the general rule observed in transition metal hydrides.","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"71 1","pages":"1735-1741"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70250781","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}
Pub Date : 1998-01-01DOI: 10.1007/978-94-011-5288-4_83
O. Pietraszkiewicz, M. Koźbiał, M. Pietraszkiewicz
{"title":"Transport studies of inorganic and organic cations across liquid membranes containing mannich-base calix[4]resorcinarenes","authors":"O. Pietraszkiewicz, M. Koźbiał, M. Pietraszkiewicz","doi":"10.1007/978-94-011-5288-4_83","DOIUrl":"https://doi.org/10.1007/978-94-011-5288-4_83","url":null,"abstract":"","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"72 1","pages":"886-892"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51712811","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}
Pub Date : 1998-01-01DOI: 10.1007/978-94-011-5288-4_84
M. Pietraszkiewicz, P. Prus, W. Fabianowski
{"title":"Chiral recognition studies of amino acids by chiral calix[4]resorcinarenes in Langmuir films","authors":"M. Pietraszkiewicz, P. Prus, W. Fabianowski","doi":"10.1007/978-94-011-5288-4_84","DOIUrl":"https://doi.org/10.1007/978-94-011-5288-4_84","url":null,"abstract":"","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"72 1","pages":"1068-1075"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/978-94-011-5288-4_84","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51712824","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}
Pub Date : 1993-01-01DOI: 10.1007/978-94-011-1470-7_331
P. Rekowski, A. Halama, P. Mucha, G. Kupryszewski, E. Poćwiardowska, Korolkiewicz Kz
{"title":"GALANIN AND ITS ANALOGUES : SYNTHESIS AND STUDIES OF THEIR AGONIST ACTIVITY ON SMOOTH MUSCLES","authors":"P. Rekowski, A. Halama, P. Mucha, G. Kupryszewski, E. Poćwiardowska, Korolkiewicz Kz","doi":"10.1007/978-94-011-1470-7_331","DOIUrl":"https://doi.org/10.1007/978-94-011-1470-7_331","url":null,"abstract":"","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"67 1","pages":"237-244"},"PeriodicalIF":0.0,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51666474","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}
The conformational energy surface of a polypeptide or protein has many local minima, and conventional energy minimization procedures reach only a local minimum (near the starting point of the optimization algorithm) instead of the global minimum (the multiple‐minima problem). Several procedures have been developed to surmount this problem, the most promising of which are: (a) build up procedure, (b) optimization of electrostatics, (c) Monte Carlo‐plus‐energy minimization, (d) electrostatically‐driven Monte Carlo, (e) inclusion of distance restraints, (f) adaptive importance‐sampling Monte Carlo, (g) relaxation of dimensionality, (h) pattern‐recognition, and (i) diffusion equation method. These procedures have been applied to a variety of polypeptide structural problems, and the results of such computations are presented. These include the computation of the structures of open‐chain and cyclic peptides, fibrous proteins and globular proteins. Present efforts are being devoted to scaling up these procedures...
{"title":"THE MULTIPLE-MINIMA PROBLEM IN PROTEIN FOLDING","authors":"A. Harold, A. Scheraga","doi":"10.1063/1.41359","DOIUrl":"https://doi.org/10.1063/1.41359","url":null,"abstract":"The conformational energy surface of a polypeptide or protein has many local minima, and conventional energy minimization procedures reach only a local minimum (near the starting point of the optimization algorithm) instead of the global minimum (the multiple‐minima problem). Several procedures have been developed to surmount this problem, the most promising of which are: (a) build up procedure, (b) optimization of electrostatics, (c) Monte Carlo‐plus‐energy minimization, (d) electrostatically‐driven Monte Carlo, (e) inclusion of distance restraints, (f) adaptive importance‐sampling Monte Carlo, (g) relaxation of dimensionality, (h) pattern‐recognition, and (i) diffusion equation method. These procedures have been applied to a variety of polypeptide structural problems, and the results of such computations are presented. These include the computation of the structures of open‐chain and cyclic peptides, fibrous proteins and globular proteins. Present efforts are being devoted to scaling up these procedures...","PeriodicalId":20369,"journal":{"name":"Polish Journal of Chemistry","volume":"68 1","pages":"889-891"},"PeriodicalIF":0.0,"publicationDate":"1991-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1063/1.41359","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59298713","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}
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