Pub Date : 2022-11-19DOI: 10.1007/s00022-022-00662-2
Marco L. Della Vedova, S. Pagani, S. Pianta
{"title":"Power sum polynomials and the ghosts behind them","authors":"Marco L. Della Vedova, S. Pagani, S. Pianta","doi":"10.1007/s00022-022-00662-2","DOIUrl":"https://doi.org/10.1007/s00022-022-00662-2","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":"114 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42177620","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 : 2022-11-15DOI: 10.1007/s00022-023-00677-3
A. Soria
{"title":"Spacelike hypersurfaces in twisted product spacetimes with complete fiber and Calabi–Bernstein-type problems","authors":"A. Soria","doi":"10.1007/s00022-023-00677-3","DOIUrl":"https://doi.org/10.1007/s00022-023-00677-3","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46718124","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 : 2022-11-03DOI: 10.14745/ccdr.v48i1112a10
Robyn Thorington, Pamela Sawatzky, Brigitte Lefebvre, Mathew Diggle, Linda Hoang, Samir Patel, Paul Van Caessele, Jessica Minion, Richard Garceau, Myrna Matheson, David Haldane, Genevieve Gravel, Michael R Mulvey, Irene Martin
Background: The Gonococcal Antimicrobial Surveillance Programme is a passive surveillance system that has monitored antimicrobial resistance in Neisseria gonorrhoeae in Canada since the 1980s. This article summarizes the demographics, antimicrobial resistances and NG-MAST (N. gonorrhoeae multiantigen sequence typing) for cultures collected in 2020.
Methods: The National Microbiology Laboratory (NML) in Winnipeg received resistant N. gonorrhoeae cultures from provincial and territorial public health laboratories. Agar dilution was used to determine the minimum inhibitory concentrations to ten antimicrobials for all cultures received at NML, according to Clinical and Laboratory Standards Institute guidelines. The NG-MAST typing was also determined for each culture.
Results: A total of 3,130 N. gonorrhoeae cases were cultured across Canada in 2020; a 36% decrease from 2019 (n=4,859). The level of decreased susceptibility to cefixime increased significantly between 2016 and 2020 to 2.8% (p=0.0054). Decreased susceptibility to ceftriaxone declined significantly between 2016 (1.8%) and 2020 to 0.9% (p=0.001), and there was no significant change with azithromycin between 2016 (7.2%) and 2020 (6.1%). The proportion of cultures with an azithromycin minimum inhibitory concentrations of ≥1 mg/L increased significantly from 11.6% in 2016 to 15.3% in 2020 (p=0.0017). The most common NG-MAST type in Canada for 2020 was sequence type (ST)-11461, while ST-12302 was most commonly associated with azithromycin resistance and ST-16639 with cephalosporin decreased susceptibility.
Conclusion: Antimicrobial resistance in N. gonorrhoeae remains an important public health concern and continued surveillance is imperative to monitor trends to ensure the recommended therapies will be the most effective.
{"title":"Antimicrobial susceptibilities of <i>Neisseria gonorrhoeae</i> in Canada, 2020.","authors":"Robyn Thorington, Pamela Sawatzky, Brigitte Lefebvre, Mathew Diggle, Linda Hoang, Samir Patel, Paul Van Caessele, Jessica Minion, Richard Garceau, Myrna Matheson, David Haldane, Genevieve Gravel, Michael R Mulvey, Irene Martin","doi":"10.14745/ccdr.v48i1112a10","DOIUrl":"10.14745/ccdr.v48i1112a10","url":null,"abstract":"<p><strong>Background: </strong>The Gonococcal Antimicrobial Surveillance Programme is a passive surveillance system that has monitored antimicrobial resistance in <i>Neisseria gonorrhoeae</i> in Canada since the 1980s. This article summarizes the demographics, antimicrobial resistances and NG-MAST (<i>N. gonorrhoeae</i> multiantigen sequence typing) for cultures collected in 2020.</p><p><strong>Methods: </strong>The National Microbiology Laboratory (NML) in Winnipeg received resistant <i>N. gonorrhoeae</i> cultures from provincial and territorial public health laboratories. Agar dilution was used to determine the minimum inhibitory concentrations to ten antimicrobials for all cultures received at NML, according to Clinical and Laboratory Standards Institute guidelines. The NG-MAST typing was also determined for each culture.</p><p><strong>Results: </strong>A total of 3,130 <i>N. gonorrhoeae</i> cases were cultured across Canada in 2020; a 36% decrease from 2019 (n=4,859). The level of decreased susceptibility to cefixime increased significantly between 2016 and 2020 to 2.8% (<i>p</i>=0.0054). Decreased susceptibility to ceftriaxone declined significantly between 2016 (1.8%) and 2020 to 0.9% (<i>p</i>=0.001), and there was no significant change with azithromycin between 2016 (7.2%) and 2020 (6.1%). The proportion of cultures with an azithromycin minimum inhibitory concentrations of ≥1 mg/L increased significantly from 11.6% in 2016 to 15.3% in 2020 (<i>p</i>=0.0017). The most common NG-MAST type in Canada for 2020 was sequence type (ST)-11461, while ST-12302 was most commonly associated with azithromycin resistance and ST-16639 with cephalosporin decreased susceptibility.</p><p><strong>Conclusion: </strong>Antimicrobial resistance in <i>N. gonorrhoeae</i> remains an important public health concern and continued surveillance is imperative to monitor trends to ensure the recommended therapies will be the most effective.</p>","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":"67 1","pages":"571-579"},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10829890/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73172153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-23DOI: 10.1007/s00022-023-00678-2
A. Davydov, S. Marcugini, F. Pambianco
{"title":"Incidence matrices for the class O6documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$${mathcal {O}}_6$$end{document} of","authors":"A. Davydov, S. Marcugini, F. Pambianco","doi":"10.1007/s00022-023-00678-2","DOIUrl":"https://doi.org/10.1007/s00022-023-00678-2","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43822990","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 : 2022-09-19DOI: 10.1007/s00022-022-00661-3
J. M. Selig
{"title":"Points in the plane, lines in space","authors":"J. M. Selig","doi":"10.1007/s00022-022-00661-3","DOIUrl":"https://doi.org/10.1007/s00022-022-00661-3","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43737126","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 : 2022-09-12DOI: 10.1007/s00022-022-00651-5
H. Havlicek, Alexander Kreuzer, H. Kroll, K. Sörensen
{"title":"Helmut Karzel (1928–2021)","authors":"H. Havlicek, Alexander Kreuzer, H. Kroll, K. Sörensen","doi":"10.1007/s00022-022-00651-5","DOIUrl":"https://doi.org/10.1007/s00022-022-00651-5","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47078337","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 : 2022-09-10DOI: 10.1007/s00022-022-00659-x
Aykut Kayhan, N. Turgay
{"title":"Biconservative hypersurfaces in Minkowski 5-space","authors":"Aykut Kayhan, N. Turgay","doi":"10.1007/s00022-022-00659-x","DOIUrl":"https://doi.org/10.1007/s00022-022-00659-x","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42901679","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 : 2022-08-29DOI: 10.1007/s00022-022-00657-z
Kazuhiro Okumura
{"title":"Real hypersurfaces in a nonflat complex space form whose certain tensor is recurrent","authors":"Kazuhiro Okumura","doi":"10.1007/s00022-022-00657-z","DOIUrl":"https://doi.org/10.1007/s00022-022-00657-z","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49105560","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 : 2022-08-27DOI: 10.1007/s00022-022-00655-1
M. Altunbaş
{"title":"Generalized Kantowski–Sachs type spacetime metrics and their harmonicity","authors":"M. Altunbaş","doi":"10.1007/s00022-022-00655-1","DOIUrl":"https://doi.org/10.1007/s00022-022-00655-1","url":null,"abstract":"","PeriodicalId":15854,"journal":{"name":"Journal of Geometry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44233443","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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