scholarly journals A Harmonised Instrumental Earthquake Catalogue for Iceland and the Northern Mid-Atlantic Ridge

2021 ◽  
Author(s):  
Kristján Jónasson ◽  
Bjarni Bessason ◽  
Ásdís Helgadóttir ◽  
Páll Einarsson ◽  
Gunnar B. Gudmundsson ◽  
...  
Keyword(s):  
Historical Earthquakes ◽  
Plate Motion ◽  
Hazard Mapping ◽  
Scientific Publications ◽  
Teleseismic Data ◽  
Uncertainty Estimates ◽  
Completeness Magnitude ◽  
Mid Atlantic Ridge ◽  
On Line ◽  
The Moment

Abstract. A comprehensive catalogue of historical earthquakes, with accurate epicentres and homogenised magnitudes is a crucial resource for seismic hazard mapping. Here we update and combine catalogues from several sources to compile a catalogue of earthquakes in and near Iceland, in the years 1900–2019. In particular the epicentres are based on local information, whereas the magnitudes are based on teleseismic observations, primarily from international on-line catalogues. The most reliable epicentre information comes from the catalogue of the Icelandic Meteorological Office, but this is complemented with information from several technical reports, scientific publications, newspaper articles, and modified by some expert judgement. The catalogue contains 1272 MW ≥ 4 events and the estimated completeness magnitude is W 5.5 in the first years, going down to MW 4.5 for recent years. The largest magnitude is MW 7.01. Such melting of local and teleseismic data has not been done before for Icelandic earthquakes, and the result is an earthquake map with no obviously mislocated events. The catalogue also lists additional 5654 earthquakes on the Mid-Atlantic Ridge, north of 43°, with both epicentres and magnitudes determined teleseismically. When moment magnitudes are not available, proxy MW values are computed with χ2-regression, normally on MS, but exceptionally on mb. All the presented magnitudes have associated uncertainty estimates. The actual combined seismic moment released in the Icelandic earthquakes is found to be consistent with the moment estimated using a simple plate motion model. The catalogue is named ICEL-NMAR and it is available online at http://dx.doi.org/10.17632/7zh6xg22cv.1.

scholarly journals A harmonised instrumental earthquake catalogue for Iceland and the northern Mid-Atlantic Ridge

2021 ◽  
Vol 21 (7) ◽  
pp. 2197-2214
Author(s):  
Kristján Jónasson ◽  
Bjarni Bessason ◽  
Ásdís Helgadóttir ◽  
Páll Einarsson ◽  
Gunnar B. Guðmundsson ◽  
...  
Keyword(s):  
Body Wave ◽  
Historical Earthquakes ◽  
The Body ◽  
Plate Motion ◽  
Hazard Mapping ◽  
Local Data ◽  
Scientific Publications ◽  
Uncertainty Estimates ◽  
Completeness Magnitude ◽  
Mid Atlantic Ridge

Abstract. A comprehensive catalogue of historical earthquakes, with accurate epicentres and harmonised magnitudes is a crucial resource for seismic hazard mapping. Here we update and combine catalogues from several sources to compile a catalogue of earthquakes in and near Iceland, in the years 1900–2019. In particular the epicentres are based on local information, whereas the magnitudes are based on teleseismic observations, primarily from international online catalogues. The most reliable epicentre information comes from the catalogue of the Icelandic Meteorological Office, but this is complemented with information from several technical reports, scientific publications, and newspaper articles. The catalogue contains 1281 moment magnitude (Mw) ≥4 events, and the estimated completeness magnitude is Mw 5.5 in the first years, going down to Mw 4.5 for recent years. The largest magnitude is Mw 7.0. Such merging of local data and teleseismic catalogues has not been done before for Icelandic earthquakes, and the result is an earthquake map with much more accurate locations than earlier maps. The catalogue also lists 5640 additional earthquakes on the Mid-Atlantic Ridge, north of 43∘, with both epicentres and magnitudes determined teleseismically. When moment magnitudes are not available, proxy Mw values are computed using χ2 regression, normally on the surface-wave magnitude but exceptionally on the body-wave magnitude. Magnitudes of Mw≥4.5 have associated uncertainty estimates. The actual combined seismic moment released in the Icelandic earthquakes is found to be consistent with the moment estimated using a simple plate motion model, indicating that the seismic activity of the catalogue period might be typical of any 120-year time span. The catalogue is named ICEL-NMAR, and it is available online at http://data.mendeley.com (last access: 19 July 2021).

scholarly journals AN EARTHQUAKE CATALOG OF MID-ATLANTIC RIDGE

2017 ◽  
Vol 50 (3) ◽  
pp. 1258 ◽  
Author(s):  
E. Teza ◽  
E.M. Scordilis ◽  
C.B. Papazachos ◽  
G.F. Karakaisis
Keyword(s):  
Large Scale ◽  
Time Window ◽  
Magnitude Scale ◽  
Earthquake Catalog ◽  
Strong Earthquakes ◽  
Completeness Magnitude ◽  
Mid Atlantic Ridge ◽  
The Moment ◽  
Definition Of ◽  
Reference Agency

The Mid-Atlantic Ridge (M-AR), which runs along the centre of the Atlantic Ocean, is one of the best known divergent boundaries. Seismic studies have been a crucial factor in deciphering the structure of the oceanic crust. For their performance a necessary prerequisite is the compilation of a reliable earthquake catalog of the broader area. In this study, an attempt was made to create an earthquake catalog of M-AR that could become a useful “tool” for large-scale seismological studies of this region. For this reason a very large sample of data from several seismological centers, as well as from already published catalogs of strong earthquakes, was collected and examined. ISC was considered as the main reference agency, while as reference magnitude scale the moment magnitude scale, MW was adopted. The main goal was to identify and organize the best and most recent information available for earthquakes falling within the time window 1900-2014 and the space window bounded by the extended coordinates ~ 81 (N) to -51 (S) and 10 (E) to ~ -50 (W). After magnitude homogenization, check of focal depths and definition of completeness magnitude, a reliable and homogeneous earthquake catalog of M AR consisting of 14,211 events was created, available for any seismological use and further study.

Strategic determinants for introduction of innovation to the market

2019 ◽  
pp. 63-66
Author(s):  
Lyudmyla Petrenko
Keyword(s):  
Time Management ◽  
Strategic Choice ◽  
External Factors ◽  
Innovative Product ◽  
Scientific Publications ◽  
Internal Factors ◽  
Radical Innovations ◽  
Management Actions ◽  
Innovative Products ◽  
The Moment

All innovative products implemented by enterprises can be classified into two categories: radical innovation or improvements. If the first category is almost exclusively the result of breakthrough scientific research, then the second is a consequence of management actions to further improve previous innovative products. Improvements, in contrast to radical innovations, are a relatively less studied direction. In most cases, the moment the radical innovations enter the market is difficult to predict. However, the introduction of improvements to the market is determined by management. At the same time, management, making a decision on introducing an innovative product to the market, focuses on internal and external factors. Internal factors are organizational readiness to introduce an innovative product, and external factors are market necessity. The latter implies, if possible, a reaction to the actions of competitors, who also introduce innovations. The problematic question remains relevant: how do various external and internal factors determine the choice of the moment the innovation is brought to the market. What has a decisive influence on such a strategic choice? The purpose of this study was to investigate how competing and complementary technological events in the environment affect an enterprise’s launch of innovative products on the market. The study was carried out based on the analysis of scientific publications on the economics of innovation and publications on competitive rivalry. The main conclusion: strategies for improvements, as a rule, become less focused on the internal determinants of bringing innovations to the market as market concentration increases, and at the same time, they are increasingly reacting both to competitors’ innovations and innovations in additional technologies. Thus competitive pressure in the industry is an important determinant of the strategic choice to bring innovation to the market.

Automated sequencing batch bioreactor under extreme peaks of 4-chlorophenol

2003 ◽  
Vol 47 (10) ◽  
pp. 175-181 ◽  
Author(s):  
G. Buitrón ◽  
M.-E. Schoeb ◽  
J. Moreno
Keyword(s):  
Dissolved Oxygen ◽  
Metabolic Activity ◽  
Automated System ◽  
Stable Operation ◽  
High Concentration ◽  
Batch Bioreactor ◽  
On Line ◽  
The Moment ◽  
And Control ◽  
System Operating

The operation of a sequencing batch bioreactor is evaluated when high concentration peaks of a toxic compound (4-chlorophenol, 4CP) are introduced into the reactor. A control strategy based on the dissolved oxygen concentration, measured on line, is utilized. To detect the end of the reaction period, the automated system search for the moment when the dissolved oxygen has passed by a minimum, as a consequence of the metabolic activity of the microorganisms and right after to a maximum due to the saturation of the water (similar to the self-cycling fermentation, SCF, strategy). The dissolved oxygen signal was sent to a personal computer via data acquisition and control using MATLAB and the SIMULINK package. The system operating under the automated strategy presented a stable operation when the acclimated microorganisms (to an initial concentration of 350 mg 4CP/L), were exposed to a punctual concentration peaks of 600 mg 4CP/L. The 4CP concentrations peaks superior or equals to 1,050 mg/L only disturbed the system from a short to a medium term (one month). The 1,400 mg/L peak caused a shutdown in the metabolic activity of the microorganisms that led to the reactor failure. The biomass acclimated with the SCF strategy can partially support the variations of the toxic influent since, at the moment in which the influent become inhibitory, there is a failure of the system.

scholarly journals Patients' anxiety before cardiac catheterization

2010 ◽  
Vol 8 (4) ◽  
pp. 483-487 ◽  
Author(s):  
Leandro Loureiro Buzatto ◽  
Suely Sueko Viski Zanei
Keyword(s):  
Cardiac Catheterization ◽  
Patient Information ◽  
Scientific Publications ◽  
Patient Understanding ◽  
Post Procedure ◽  
Long Time ◽  
On Line ◽  
First Time ◽  
Multiprofessional Approach ◽  
Pharmacologic Therapies

ABSTRACT Objective: To identify researches related to anxiety and strategies to reduce it in patients who are in the pre-cardiac catheterization period. Methods: A bibliographic research was carried out in the on line databases of PubMed, MedLine, CINAHL, LILACS and SciELO, from 1997 to 2009 in MedLine and from 1999 to 2009 in the others databases. The boolean expressions “and” and “or” has been used with the descriptors in Portuguese and in English. The inclusion of discerning was related about the presence, level and workable of the anxiety from the period of pre-cardiac catheterization. Results: Coping most of 17 researches selected were in American scientific publications, with experimental-descriptive studies. The possibilities of intercurrence and/or complications during and post-procedure, diagnostic, possibility of bad prognostic, being alone during the waiting, the first time submission the procedure, lost information and/or orientation and long time waiting could cause anxiety in pre-cardiac catheterization. Maintenance of escort and family alongside the patient, information adapted to the patient understanding level, overcoming traumas and difficulties with a multiprofessional approach, pharmacologic and non pharmacologic therapies were strategies to reduce the anxiety. Conclusions: The nurses are responsible to provide a humanized assistance to offer a fast recuperation, minimize traumas of the hospitalization and the procedure. The knowledge of the causes and the strategies are fundamental to reduce the level of anxiety in pre-catheterization cardiac.

scholarly journals Humanizing intensive nursing care for people with COVID-19

Rev Rene ◽  
2021 ◽  
Vol 22 ◽  
pp. e62584
Author(s):  
Sergio Vital da Silva Junior ◽  
Aline Gomes Machado ◽  
Anny Michelle Rodrigues da Silva Alves ◽  
Katia Jaqueline da Silva Cordeiro ◽  
Maíra Bonfim Barbosa ◽  
...  
Keyword(s):  
Intensive Care ◽  
Music Therapy ◽  
Care Environment ◽  
Intensive Care Nurses ◽  
On Line ◽  
The Moment ◽  
The Impact ◽  
Theoretical Saturation ◽  
Hospital Sample ◽  
Do So

Objective: to understand the impact of music on the intensive care for COVID-19 as an instrument to humanize assistance from the perspective of nurses who work on assistance. Methods: qualitative study carried out with seven intensive care nurses working in the COVID-19 Intensive Care Unit of a public state hospital. Sample reached through theoretical saturation. Data were collected using interviews through the on-line application WhatsApp, guided by a semi-structured guide. Results: the following discursive categories emerged: Feelings of health professionals and humanized actions in intensive care; Music therapy to provide integral care for people with COVID-19 in the score of intensive care; Living in the moment; Music therapy as an instrument for spirituality in the intensive care environment. Conclusion: the nursing intensive care did not only carry out a biological treatment, but considered all aspects of the human being, using to do so humanization by music.

scholarly journals Scientific and practical journal "Radiation Diagnostics, Radiation Therapy" as the basis for professional interaction: 2010-2020

2020 ◽  
pp. 7-15
Author(s):  
Iryna Dykan
Keyword(s):  
Radiation Therapy ◽  
Scientific Journal ◽  
Scientific Work ◽  
High Tech ◽  
Scientific Article ◽  
Free Access ◽  
The Usa ◽  
Adults And Children ◽  
On Line ◽  
The Moment

The journal "Radiation Diagnostics, Radiation Therapy" was founded in 2010. The founder and publisher of the journal is the SI "Institute of Nuclear Medicine and Diagnostic Radiology of the National Academy of Medical Sciences of Ukraine". The purposes and objectives of the journal: informing national and foreign readers about new experimental and clinical researches in the field of radiation diagnostics, radiation therapy and surgery; providing a platform for scientific discussions and reaching consensus on controversial and actual aspects of radiation diagnostics and radiation therapy of diseases in adults and children; promoting the expansion of cooperation between domestic and foreign specialists in the field of radiation diagnostics, radiation therapy and surgery for the formation of modern effective practice. In 2019, the journal was re-registered as "Radiation Diagnostics, Radiation Therapy" (RDRT). All scientific articles are peer-reviewed. Since 2019, all scientific articles published in the journal have been assigned the DOI index as one of an essential accessory for integration into the scientific space of our planet. As of December 2020, a total of 36 RDRT issues have been published. For 10 years, a total of 373 publications, within 23 headings, from 70 institutions of Ukraine, Belarus, Russia, Germany, and the USA, have been printed on its pages. All high-tech technologies of radiation diagnostics and radiation therapy to one degree or another are reflected in the published articles. It is planned to master live publication – posting on the Internet in the free access of scientific work, which is periodically brought up to date by its author. The advantages of such a publication: comfortable perception by the reader (in the text, all inaccuracies and errors noticed from the moment of the first publication of the work on-line are carefully corrected, and also changes in this branch of science are constantly monitored); comfort for the author (mistakes and misprints are now not fatal, and do not haunt the author for the rest of his life); interest in the periodically updated publication even intensifies over time, many readers return to the actual text not only to refresh the most significant points in their memory, but also to find out how the author's views are being transformed and what’s new appeared in a particular area. Key words: science, scientific journal, scientific article, scientific communication, scientometrics, scientific ecosystem.

Prediction of Deformation to Thin Ship Panels for Different Heat Sources

2001 ◽  
Vol 17 (02) ◽  
pp. 52-61
Author(s):  
H.C. Kuo ◽  
L.J. Wu
Keyword(s):  
Plate Thickness ◽  
Prediction Method ◽  
Steel Plates ◽  
Data Series ◽  
Heat Sources ◽  
Skilled Workers ◽  
Forming Process ◽  
Shipbuilding Industry ◽  
On Line ◽  
The Moment

The increasing use of thin steel plates in manufacturing and the shipbuilding industry has given rise to several issues: massive deformation problems, the need for many skilled workers, and the expense of costs for straightening in on-line processes. This study explains the results of experiments and predicts techniques for the control of deformation in thin panels. The objective of this paper is to explain the use of the G(1,1) Grey method to predict deformation. Bending and buckling are usually the dominant modes of deformation in heat working. It follows angular deformation. De- formation due to different heat sources is discussed. In this paper, laser and torch are used in different constraints, for example, free-free beam and cantilever beam. Many important factors include tiny adjustments during the heat forming process, such as changing the moment speed, intensity of input heating, plate thickness and heating path, to improve manufacture techniques and to predict deformation by data series. For the prediction of deformation, a method to estimate input heating of laser and torch is introduced. The proposed prediction method can be used during the forming process simply and efficiently.

Development and evaluation of a glucose analyzer for a glucose controlled insulin infusion system ((Biostator).

1978 ◽  
Vol 24 (8) ◽  
pp. 1366-1372 ◽  
Author(s):  
E J Fogt ◽  
L M Dodd ◽  
E M Jenning ◽  
A H Clemens
Keyword(s):  
Blood Glucose ◽  
Whole Blood ◽  
Insulin Infusion ◽  
Full Range ◽  
Dynamic Control ◽  
On Line ◽  
The Moment ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Blood Glucose Concentrations ◽  
Infusion System

Abstract The Glucose-Controlled Insulin Infusion System (Biostator) is a modular, computerized, feedback control system for dynamic control of blood glucose concentrations in diabetics. This on-line glucose analyzer for use with whole blood utilizes a novel enzyme (glucose oxidase)-membrane configuration and an electrochemical cell to measure the H202 generated. The analyzer exhibits both short- and long-range stability, and instrument response and analyte concentration are linearly related over the full range of clinical interest. The response is fast, accurate, and precise, and permits determination of blood glucose within 2 min from the moment the blood leaves the patient. Correlation studies were completed to show the agreement between the Biostator Glucose Analyzer and the FDA's recommended hexokinase/glucose-6-phosphate dehydrogenase procedure on whole blood (e.g., average per cent recovered for 11 concentrations between 250 and 900 mg/liter was: hexokinase, 95.6%, Biostator Analyzer, 95.9%; bias and SDd, respectively, at low, normal, and high glucose values were: 12 and 41 mg/liter at the 500 mg/liter level; 4 and 52 mg/liter at the 1000 mg/liter level, and 4 and 128 mg/liter at the 4000 mg/liter level). No appreciable interference is observed with above-normal concentrations of bilirubin, uric acid, creatinine, sodium salicylate, or dextran. Platelet adhesion, which tends to decrease the useful life of the membrane, has been significantly decreased.

scholarly journals On the Issue of Creating a Russian Agent Network in Shanghai at the Beginning of the 20th Century

2021 ◽  
Vol 16 (6) ◽  
pp. 29-38
Author(s):  
Drobotushenko Evgeny V. ◽  
Keyword(s):  
20Th Century ◽  
Russian Empire ◽  
Foreign Affairs ◽  
Scientific Publications ◽  
History Of ◽  
The Subject ◽  
The Russian Federation ◽  
The Russian Empire ◽  
The Moment ◽  
The City

The history of the creation of the agent network of the Russian Empire has not found comprehensive coverage in scientific publications so far. The existing research referred to specific names or mention private facts. This predetermined the relevance of the work. The object of the study is the Russian agents in China in general and in Chinese Shanghai, in particular. The subject is the study of peculiarities of the first attempts in creating Russian agent network in the city. The aim of the work is to analyze the attempt to create a network of Russian illegal agents in Shanghai in 1906–1908. The lack of materials on the problem in scientific and popular scientific publications predetermined the use of previously unknown or little-known archival sources. This is the correspondence of the Minister of Foreign Affairs, the Russian Imperial envoy in Beijing and the Russian Consul in Shanghai stored in the funds of the State Archive of the Russian Federation (SARF). The main conclusion of the study was the remark about the lack of scientific elaboration, at the moment, the history of official, legal and illegal agents of the Russian Empire in Shanghai, China. Private findings suggest that, judging by the available data, creation of a serious network of agents in the city during the Russian Empire failed. The reasons for this, presumably, were several: the lack of qualified agents with knowledge of Chinese or, at least, English, who could work effectively; the lack of funds for the maintenance of agents, a small number of Russian citizens, the remoteness of Shanghai from the Russian-Chinese border, etc. A network of agents will be created in the city by the Soviet authorities by the middle of the third decade of the 20th century, and Soviet illegal agents began to work in the early 1920s. The History of Soviet agents in China and Shanghai, in particular, is studied quite well which cannot be said about the previous period. It is obvious that further serious work with archival sources is required to recreate as complete as possible the history of Russian legal and illegal agents in Shanghai in pre-Soviet times

Sign in / Sign up

Export Citation Format

Share Document