Polish Hyperbaric Research最新文献_第2页

Diving Technology Design in a Mine Countermeasure System Part II Reliability 矿井对抗系统中的潜水技术设计第二部分可靠性

Polish Hyperbaric Research Pub Date : 2022-06-01 DOI: 10.2478/phr-2022-0007

R. Kłos

引用次数: 0

Zinc and Magnesium vs COVID - 19 锌和镁与COVID - 19

Polish Hyperbaric Research Pub Date : 2022-06-01 DOI: 10.2478/phr-2022-0009

Barbara Sokołowska, S. Nazaruk, Agnieszka Radzka-Pogoda, G. Henrykowska, A. Borzęcki

引用次数: 0

Innovations in Undergraduate Research Training Through Multisite Collaborative Programming: American Heart Association Summer Undergraduate Research Experience Syndicate. 通过多站点合作计划进行本科生研究培训的创新：美国心脏协会暑期大学生研究体验联合组织。

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Polish Hyperbaric Research Pub Date : 2022-04-19 Epub Date: 2022-04-07 DOI: 10.1161/JAHA.121.022380

Tinuola B Ajayi, Adrienne L Mueller, Ike S Okwuosa, Asha Barshilia, Joseph C Wu, Emelia J Benjamin, Joey V Barnett, Kendra H Oliver

{"title":"Innovations in Undergraduate Research Training Through Multisite Collaborative Programming: American Heart Association Summer Undergraduate Research Experience Syndicate.","authors":"Tinuola B Ajayi, Adrienne L Mueller, Ike S Okwuosa, Asha Barshilia, Joseph C Wu, Emelia J Benjamin, Joey V Barnett, Kendra H Oliver","doi":"10.1161/JAHA.121.022380","DOIUrl":"10.1161/JAHA.121.022380","url":null,"abstract":"<p><p>Background To support diversity in biomedical science, the American Heart Association launched the Supporting Undergraduate Research Experiences for undergraduate students from underrepresented backgrounds to provide mentorship and high-level exposure at 5 leading medical institutions. Here we describe the initial formation of the partnership and the alteration made in response to the program to accommodate COVID-19 safety precautions. Methods and Results We outline how programming shifted from local, in-person programming in the summer of 2019 to a collaborative, mainly virtual curriculum in 2020 using students' self-reported before and after surveys from both 2019 (n=33) and 2020 (n=42). Students from both in-person (2019) and virtual programs (2020) self-reported significant gains in scientific proficiency. A qualitative-directed content analysis of student open-response questions was performed. Students reported extensive benefits from the 2020 virtual training, including Personal Gains, Research Skills, Thinking and Working Like a Scientist, and Attitudes and Behaviors. Notedly, we observed increases in the Attitudes and Behaviors category. We outline the pros and cons of in-person and virtual programming and make recommendations moving forward in a postpandemic world with hybrid work and learning systems. Conclusions Our effort informs the development of future undergraduate research training programs, significantly maximizing a hybrid training modality. The American Heart Association Supporting Undergraduate Research Experiences serves as a model for building multi-institutional partnerships and providing research experiences that overcome institutional barriers and support students' interests, commitment, and ability to persist in science, technology, engineering, and math fields.</p>","PeriodicalId":40385,"journal":{"name":"Polish Hyperbaric Research","volume":"1 1","pages":"e022380"},"PeriodicalIF":0.1,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9238450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89410156","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

VIS camera studies of the combustion process of pyrotechnic retarders of NGP-76 underwater fifle grenades NGP-76水下榴弹烟火缓燃剂燃烧过程的VIS摄像机研究

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2022-0002

M. Miszczak, R. Warchoł, M. Gedziorowski, M. Piecuch, G. Grzeczka

{"title":"VIS camera studies of the combustion process of pyrotechnic retarders of NGP-76 underwater fifle grenades","authors":"M. Miszczak, R. Warchoł, M. Gedziorowski, M. Piecuch, G. Grzeczka","doi":"10.2478/phr-2022-0002","DOIUrl":"https://doi.org/10.2478/phr-2022-0002","url":null,"abstract":"Abstract The study presents the combustion process of the multi-segment, low-gas pyrotechnic column of the warhead retarder of the NGP-76 underwater rifle grenade, designed to combat divers with an underwater shock wave. The combustion process, i.e. process from the ignition of the first segment of the retarder to the completion of combustion of its last segment, was recorded with a VIS camera filming at 30 frames per second. The rapid, short combustion of these outermost segments containing zirconium and Pb3O4 (minium) was accompanied by a blinding plume of brightly glowing particles of zirconium dioxide and lead vapor. The combustion of the middle segments formed from the MGS-54 pyrotechnic mixture containing BaCrO4, KClO4 and Sb2S5, determining the duration of the delay, i.e. the delay produced by the retarder, was much slower and longer than that of the outermost segments. During the combustion of each MGS-54 segment, the combustion front took the form of a flat section in the initial part of the segment, i.e. in the area of higher density, while in the further part of the segment (with lower density) the shape of the front became irregular. At the MGS-54 segment boundary, the combustion front halted briefly. Behind the combustion front, a conical tail of luminous solid combustion products became clearly visible at the MGS-54 segment boundary. The gaseous combustion products of the MGS-54 segments, formed in small amounts and revealed as white plumes, were probably KCl vapor and/or sulfur dioxide. After combustion, the retarder column of the MGS-54 segments was green in color due to the presence of chromium compounds, possibly Ba(CrO2)2.","PeriodicalId":40385,"journal":{"name":"Polish Hyperbaric Research","volume":"75 1","pages":"31 - 42"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44424691","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

The Influence of Aflatoxin B1 on the Concentration of Nuclear Factor κB in Rats’ Livers 黄曲霉毒素B1对大鼠肝脏核因子κB浓度的影响

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2021-0006

Mateusz Woźniakowski, Nikola Woźniakowska, T. Zuzak, Łukasz Świerszcz, Marta Wójciak-Czuła, A. Borzęcki, B. Nieradko-Iwanicka

{"title":"The Influence of Aflatoxin B1 on the Concentration of Nuclear Factor κB in Rats’ Livers","authors":"Mateusz Woźniakowski, Nikola Woźniakowska, T. Zuzak, Łukasz Świerszcz, Marta Wójciak-Czuła, A. Borzęcki, B. Nieradko-Iwanicka","doi":"10.2478/phr-2021-0006","DOIUrl":"https://doi.org/10.2478/phr-2021-0006","url":null,"abstract":"Abstract Introduction. Aflatoxins are metabolites produced by Aspergillus flavus and Aspergillus parasiticus. Due to the high prevalence of aflatoxin-containing products they are common issue of the observational studies. Observational studies have demonstrated the hepatotoxic effects of aflatoxins in humans. However, the exact pathogenetic mechanisms of the effect of aflatoxin B1 on the above-mentioned hepatotoxicity have not yet been known. Aim of the study. The aim of the study was to assess the toxic effects of different doses of aflatoxin B1. The analyze was performed using assessment of concentration of NF-κB in liver tissue homogenates after a 7-day intoxication with this mycotoxin. Material and methods. The studies were carried out on Wistar male rats which were selected randomly, according to the principle of simultaneity for the control group and the study groups. The concentration of NK-κB was determined by immunoenzymatic ELISA in the obtained supernatants of liver taken from decapitated animals. The statistical analysis was performed with Statistica 13.3 (Statsoft, USA). Results. The statistical significance of the difference between the concentrations in the control and study group receiving 1.0 mg/kg of aflatoxin B1 and between the control and study group who received aflatoxin B1 at a dose of 2.0 mg/kg body weight (p <0,05) were demonstrated. A significant relationship was also found between the level of dose of aflatoxin B1 administered to the rats and the concentration of NF-κB. Negative correlations were obtained. The higher dose administered to rats - the lower level of measured concentration of NF-κB. Conclusions. The study of the influence of aflatoxin B1 on the level of NF-κB transcription factor may significantly contribute to understand the mechanism of its action, influence on inflammatory, apoptotic and carcinogenic processes in the liver and determine its safe level in food intended for humans and animals.","PeriodicalId":40385,"journal":{"name":"Polish Hyperbaric Research","volume":"74 1","pages":"67 - 75"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44976155","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

Diving with Diabetes - A Review of Recommendations 糖尿病患者潜水-建议综述

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2021-0003

Ewa Mańka, Bartosz Skuratowicz, S. Kwiatek, Maciej Krupowies, Karolina Sieroń

引用次数: 0

Design of Mine Warfare Diving Technology. Standardisation Requirements 水雷战潜水技术设计。标准化的要求

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2022-0001

R. Kłos

引用次数: 0

Biological Threats in Diving Locations 潜水地点的生物威胁

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2022-0006

M. Lewicka, M. Zawadzka, P. Siermontowski, W. Giermaziak, G. Henrykowska

引用次数: 0

Research on saturation diving in Poland and its implementation. Part I B. General characteristics of saturation diving research in our Poland. Pioneer times; 1967-1985 波兰饱和潜水的研究与实施。第一部分:我国波兰饱和潜水研究的一般特点。先锋;1967 - 1985

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2022-0005

S. Skrzyński

{"title":"Research on saturation diving in Poland and its implementation. Part I B. General characteristics of saturation diving research in our Poland. Pioneer times; 1967-1985","authors":"S. Skrzyński","doi":"10.2478/phr-2022-0005","DOIUrl":"https://doi.org/10.2478/phr-2022-0005","url":null,"abstract":"Abstract The article is the first in a series of articles on the research and implementation of saturation diving technology in our country which presents the specific Polish conditions and achievements against the background of economic and historical circumstances. In view of the fact that research and implementation has a history of more than half a century, selected key figures of this period are recalled, some of whom have disappeared in the fogs of history. In the specialized literature of the world, the Polish underwater habitats of Meduza are among top 6 countries that researched and implemented, this high technology of saturation diving. Regarded as the inspirer, pioneer and creator of the first saturation diving, he designed and developed the technique and decompression with the cooperation of a team of enthusiasts from clubs and professional divers, as well as engineering staff from the Tri-City enterprises. In the first part of the article the author characterizes the saturation dives in comparison with short dives with particular emphasis on decompression, which is the key to safe diving. The article also takes into account the technical conditions for the implementation of the first saturation dives. The author discusses the general methodology of validation and verification of the assumed decompression, referring to the Polish conditions. He describes how the medical, technical, and organizational problems of implementation of saturation diving were solved in the pioneering period against the background of world achievements. Furthermore, the author describes Polish habitat constructions of Meduza and Geonur types and their application to underwater work on the Polish shelf and coastal areas. Despite the great progress in the field of medicine and technology, as well as organization, the problems of saturation diving, despite the passage of time, remain relevant, as these are the most difficult dives from the point of view of organization, underwater physiology and safety technology.","PeriodicalId":40385,"journal":{"name":"Polish Hyperbaric Research","volume":"75 1","pages":"73 - 86"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46613600","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

Stability Testing Method for Underwater ROVs 水下遥控潜水器稳定性测试方法

Polish Hyperbaric Research Pub Date : 2022-03-01 DOI: 10.2478/phr-2021-0002

Patryk Zając, Marek Dawidziuk, A. Olejnik

引用次数: 0