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Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles最新文献

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Features of Particulate Matter and Microbiota in the Lowest Atmospheric Layer above Densely Populated Urban Areas 人口密集城市上空低层颗粒物和微生物群特征
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 2021-12-24 DOI: 10.7546/crabs.2021.12.03
M. Iliev, R. Ilieva, B. Angelova, D. Paneva, Z. Cherkezova-Zheleva, V. Groudeva, I. Nedkov
{"title":"Features of Particulate Matter and Microbiota in the Lowest Atmospheric Layer above Densely Populated Urban Areas","authors":"M. Iliev, R. Ilieva, B. Angelova, D. Paneva, Z. Cherkezova-Zheleva, V. Groudeva, I. Nedkov","doi":"10.7546/crabs.2021.12.03","DOIUrl":"https://doi.org/10.7546/crabs.2021.12.03","url":null,"abstract":"A comprehensive study of the air condition in a limited urban area in the Bulgarian capital Sofia during the COVID-19 quarantine measures 2020- 2021 was conducted. The work has been focused on the systematic in situ reading of the mass concentration of particulate matter (PM) with dimensions - PM2.5&10, by sampling with Air quality sensor SDS 011 and absorber with filter collector. X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy Dispersive X-Ray Analysis (EDAX) and Mössbauer Spectroscopy (MöS) have been applied to study the collected PM. Six-stage cascade impactor was used for microbial enumeration and size distribution. Physico-chemical investigation reveals that the collected PM is mostly aggregates of a solid core and liquid surface, but it is composed of small particles including nanosized ones. SEM and microbiological analysis shows that PM ≥ 2.5 is loaded with microbiota especially fungi. Studies show that while the peaks of PM pollution are predominantly related to car traffic, industry and heating, the change in the microbiota is seasonal and correlations between them were observed in one-year study period. © 2021 Academic Publishing House. All rights reserved.","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82959955","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
Two-Type Reducible Age-Dependent Branching Processes With Non-Homogeneous Poisson Immigration. 具有非均质泊松移民的两类可还原年龄相关分支过程
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 2011-01-01
Ollivier Hyrien, Nikolay M Yanev
{"title":"Two-Type Reducible Age-Dependent Branching Processes With Non-Homogeneous Poisson Immigration.","authors":"Ollivier Hyrien, Nikolay M Yanev","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two type reducible age-dependent branching stochastic processes with non-homogeneous Poisson immigration are considered as models of renewal cell population dynamics. The asymptotic behaviour of the first moments of the process with or without immigration is investigated. Several classes of asymptotic behavior are identified for the population dynamics. Our results are also useful for developing associated methods of statistical inference.</p>","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"64 4","pages":"469-478"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3286802/pdf/nihms303947.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30496669","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}
引用次数: 0
Modeling Cell Kinetics using Branching Processes with Non-Homogeneous Poisson Immigration. 利用非均质泊松移民的分支过程建立细胞动力学模型
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 2010-01-01
Ollivier Hyrien, Nikolay M Yanev
{"title":"Modeling Cell Kinetics using Branching Processes with Non-Homogeneous Poisson Immigration.","authors":"Ollivier Hyrien, Nikolay M Yanev","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Age-dependent branching processes with non-homogeneous Poisson immigration are proposed as models of cell proliferation kinetics. The asymptotic behaviour of the first and second-order moments is investigated and the obtained results are use to develop a relevant statistical inference.</p>","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"63 10","pages":"1405-1414"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3666344/pdf/nihms270679.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31476112","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}
引用次数: 0
Investigations on the phagocytic activity of peritoneal macrophages in experimental allogenic transplantation. 实验性异体移植中腹腔巨噬细胞吞噬活性的研究。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
I Droumchev, L Gitsov
{"title":"Investigations on the phagocytic activity of peritoneal macrophages in experimental allogenic transplantation.","authors":"I Droumchev,&nbsp;L Gitsov","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 1","pages":"157-9"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11536265","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
Tissue-specific antigens in human embryonic placenta. 人胚胎胎盘组织特异性抗原。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
B A Botev, I R Kehayov, S D Kyurkchiev, M I Stamenova, T K Bratanova
{"title":"Tissue-specific antigens in human embryonic placenta.","authors":"B A Botev,&nbsp;I R Kehayov,&nbsp;S D Kyurkchiev,&nbsp;M I Stamenova,&nbsp;T K Bratanova","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 5","pages":"763-6"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11292888","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
Isolation of amphibian ovarian follicles by fractional centrifugation. 分式离心分离两栖动物卵泡。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
K Manova-Todorova, G K Roussev, A Boyadjieva-Michailova, A L Hadjioloff
{"title":"Isolation of amphibian ovarian follicles by fractional centrifugation.","authors":"K Manova-Todorova,&nbsp;G K Roussev,&nbsp;A Boyadjieva-Michailova,&nbsp;A L Hadjioloff","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 2","pages":"309-12"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11764631","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
Identification of time intervals under LSD25 and mescaline. LSD25和美斯卡灵作用下时间间隔的识别。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
L Mitrani, S Shekerdjiiski, A Gurevich, S Yanev
{"title":"Identification of time intervals under LSD25 and mescaline.","authors":"L Mitrani,&nbsp;S Shekerdjiiski,&nbsp;A Gurevich,&nbsp;S Yanev","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 11","pages":"1645-7"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11810763","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
Investigation on basic and non-histonic proteins in the development of ovocytes in sea-roach (Carrassius auratus Gibelio/Bloch). 海roach (Carrassius auratus Gibelio/Bloch)卵母细胞发育中碱性和非组织蛋白的研究
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
O A Dryanovska, M Shahanova
{"title":"Investigation on basic and non-histonic proteins in the development of ovocytes in sea-roach (Carrassius auratus Gibelio/Bloch).","authors":"O A Dryanovska,&nbsp;M Shahanova","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 1","pages":"137-40"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12037081","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
Cellular and tissue changes in mouse thyroid after local x-ray irradiation. 局部x射线照射后小鼠甲状腺细胞和组织的变化。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
L A Kashtenko, M V Bakalska
{"title":"Cellular and tissue changes in mouse thyroid after local x-ray irradiation.","authors":"L A Kashtenko,&nbsp;M V Bakalska","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 1","pages":"141-4"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12037082","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
Studies on the central depressive action of methanol extract from Geranium macrorrhizum L. 大天竺葵甲醇提取物中枢抑制作用的研究。
Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles Pub Date : 1977-01-01
P Manolov, V D Petkov, S Ivancheva
{"title":"Studies on the central depressive action of methanol extract from Geranium macrorrhizum L.","authors":"P Manolov,&nbsp;V D Petkov,&nbsp;S Ivancheva","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75730,"journal":{"name":"Comptes rendus de l'Academie Bulgare des sciences : sciences mathematiques et naturelles","volume":"30 11","pages":"1657-9"},"PeriodicalIF":0.0,"publicationDate":"1977-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11769752","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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