scholarly journals Dynamic Identification Tests of 20th Century Historic Masonry Buildings in Japan

GeoHazards ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 332-351
Author(s):  
Yohei Endo ◽  
Yuta Waki ◽  
Yasushi Niitsu ◽  
Toshikazu Hanazato
Keyword(s):  
Numerical Simulation ◽  
Cultural Values ◽  
20Th Century ◽  
Health Monitoring ◽  
High Sensitivity ◽  
Nonlinear Static Analysis ◽  
Dynamic Identification ◽  
Historic Masonry ◽  
Mems Accelerometers ◽  
One Year

This paper discussed the application of health monitoring systems to 20th-century historic buildings. Natural disasters are major threats to monuments. They are often seismically vulnerable and require interventions. However, taking into account their historic and cultural values, it is appropriate to observe long-term behaviour before making a decision on intervention schemes. To this aim, health monitoring is considered an effective approach. In recent years, MEMS (micro-electromechanical systems) accelerometers have been attracting attention for their convenience and efficacy. Nonetheless, the reliability of MEMS accelerometers still needs to be examined for the monitoring of monuments as sufficient research contributions have not been made. This paper presented two case studies that were monitored by means of MEMS accelerometers. They were masonry structures positioned in seismic-prone regions in Japan. A number of earthquakes were detected by the accelerometers during one year of monitoring. To examine the accuracy of the adopted MEMS accelerometers, dynamic identification tests were conducted using high-sensitivity strain-gauge accelerometers and servo velocity meters. Based on responses obtained from the tests, numerical simulation was performed. Nonlinear static analysis was performed. The numerical simulation permitted the comparison of reliability among sensors and test types. This paper provided suggestions for the dynamic identification tests of heritage structures.

scholarly journals Prototyping and Validation of MEMS Accelerometers for Structural Health Monitoring—The Case Study of the Pietratagliata Cable-Stayed Bridge

2018 ◽  
Vol 7 (3) ◽  
pp. 30 ◽  
Author(s):  
Chiara Bedon ◽  
Enrico Bergamo ◽  
Matteo Izzi ◽  
Salvatore Noè
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Full Scale ◽  
Shaking Table ◽  
Efficient Design ◽  
Dynamic Identification ◽  
Structural Health ◽  
Cable Stayed Bridge ◽  
Mems Accelerometers

In recent years, thanks to the simple and yet efficient design, Micro Electro-Mechanical Systems (MEMS) accelerometers have proven to offer a suitable solution for Structural Health Monitoring (SHM) in civil engineering applications. Such devices are typically characterised by high portability and durability, as well as limited cost, hence resulting in ideal tools for applications in buildings and infrastructure. In this paper, original self-made MEMS sensor prototypes are presented and validated on the basis of preliminary laboratory tests (shaking table experiments and noise level measurements). Based on the well promising preliminary outcomes, their possible application for the dynamic identification of existing, full-scale structural assemblies is then discussed, giving evidence of their potential via comparative calculations towards past literature results, inclusive of both on-site, Experimental Modal Analysis (EMA) and Finite Element Analytical estimations (FEA). The full-scale experimental validation of MEMS accelerometers, in particular, is performed using, as a case study, the cable-stayed bridge in Pietratagliata (Italy). Dynamic results summarised in the paper demonstrate the high capability of MEMS accelerometers, with evidence of rather stable and reliable predictions, and suggest their feasibility and potential for SHM purposes.

scholarly journals Development of a High-Sensitivity Wireless Accelerometer for Structural Health Monitoring

Sensors ◽  
2018 ◽  
Vol 18 (1) ◽  
pp. 262 ◽  
Author(s):  
Li Zhu ◽  
Yuguang Fu ◽  
Raymond Chow ◽  
Billie Spencer ◽  
Jong Park ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
High Sensitivity ◽  
Structural Health ◽  
Wireless Accelerometer

Area-Arrayed Graphene Nano-Ribbon-Base Strain Sensor

2018 ◽  
Author(s):  
Ryohei Nakagawa ◽  
Zhi Wang ◽  
Ken Suzuki
Keyword(s):  
Chemical Vapor Deposition ◽  
Stress Concentration ◽  
Health Monitoring ◽  
Vapor Deposition ◽  
Strain Sensor ◽  
Chemical Vapor ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Chemical Vapor Deposition Method ◽  
High Quality

Health monitoring devices using a strain sensor, which shows high sensitivity and large deformability, are strongly demanded due to further aging of society with fewer children. Conventional strain sensors, such as metallic strain gauges and semiconductive strain sensors, however, aren’t applicable to health monitoring because of their low sensitivity and deformability. In this study, fundamental design of area-arrayed graphene nano-ribbon (GNR) strain senor was proposed in order to fabricate next-generation strain sensor. The sensor was consisted of two sections, which are stress concentration section and stress detecting section. This structure can take full advantage of GNR’s properties. Moreover, high quality GNR fabrication process, which is one of the important process in the sensor, was developed by applying CVD (Chemical Vapor Deposition) method. Top-down approach was applied to fabricate the GNR. At first, in order to synthesize a high-quality graphene sheet, acetylene-based LPCVD (low pressure chemical vapor deposition) using a closed Cu foil was employed. After that, graphene was transferred silicon substrate and the quality was evaluated. The high quality graphene was transferred on the soft PDMS substrate and metallic electrodes were fabricated by applying MEMS technology. Area-arrayed fine pin structure was fabricated by using hard PDMS as a stress-concentration section. Finally, both sections were integrated to form a highly sensitive and large deformable pressure sensor. The strain sensitivity of the GNR-base sensor was also evaluated.

scholarly journals Prognostic value of biomarkers and co-morbidities in patients with acute heart failure: One-year follow-up study

2017 ◽  
Vol 145 (3-4) ◽  
pp. 118-123
Author(s):  
Dejan Petrovic ◽  
Marina Deljanin-Ilic ◽  
Sanja Stojanovic
Keyword(s):  
Heart Failure ◽  
Renal Failure ◽  
Chronic Renal Failure ◽  
Acute Heart Failure ◽  
Troponin I ◽  
Prognostic Significance ◽  
Systolic Pressure ◽  
High Sensitivity ◽  
Clinical Group ◽  
One Year

Introduction/Objective. Clinical risk stratification of patients hospitalized due to acute heart failure (AHF) applying B-type natriuretic peptide (BNP), troponin I (TnI), and high-sensitivity C-reactive protein (hsCRP) biochemical markers can contribute to early diagnosis of AHF and lower mortality rates. The aim of this study was to investigate the prognostic significance of biomarkers (BNP, TnI, and hsCRP) and co-morbidities concerning one-year mortality in patients with AHF. Methods. Clinical group comprised 124 consecutive unselected patients, age 60?80 years, treated at the Coronary Care Unit of the Niska Banja Institute, Nis. The patients were monitored for one year after the discharge. During the first 24 hours after admission, BNP, TnI, and hsCRP were measured in fasting serum. Results. Total one-year mortality was 29.8%. The levels of serum BNP were significantly higher in the group of non-survivors compared to the group of survivors (1353.8 ?} 507.8 vs. 718.4 ?} 387.6 pg/mL, p < 0.001). We identified several clinical and biochemical prognostic risk factors by univariate and multivariate analysis. Independent predictors of one-year mortality were the following: BNP, TnI, depression, hypotension, chronic renal failure, ejection fraction, and right-ventricle systolic pressure. Conclusion. The presence of BNP and TnI biomarkers and several co-morbidities such as depression or chronic renal failure have significant influence on one-year mortality in patients with AHF.

scholarly journals Conveyance of the Dramatic Work El Gran Galeoto by José Echegaray to the European Scene and His Reception in Bratislava at the End of the 19th Century

2018 ◽  
Vol 66 (4) ◽  
pp. 335-347
Author(s):  
Jana Laslavíková ◽  
Beatriz Gómez-Pablos Calvo
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Similar Theme ◽  
Theatrical Adaptation ◽  
European Theatre ◽  
One Year ◽  
The 19Th Century ◽  
Jose Echegaray

Abstract This study looks at the work of Spanish playwright José Echegaray and the circumstances of his domestication on the European theatre stages at the turn of the 20th century. One of his most important works, El gran Galeoto55, arrived in Bratislava in 1889, only one year after its premiere in Vienna and three years after the opening of the new building of the Bratislava City Theatre. The premiere of the work, translated into German and in a theatrical adaptation from Paul Lindau’s pen named Galeotto took place around the same time as the premiere of the work Ralph William from the domestic author Josef Julian, which thanks to a similar theme was perceived as «Bratislava’s Galeotto».

Abstract 26: Prevalence and Pattern of Myocardial Injury in Patients With Cardiac vs Non-Cardiac Cause of Out-Of-Hospital Cardiac Arrest: A One-Year Multicenter Clinical Experience With the High-Sensitivity Troponin T Assay

Circulation ◽  
2019 ◽  
Vol 140 (Suppl_2) ◽  
Author(s):  
David E Hamilton ◽  
Bradley J Petek ◽  
Lindsay G Panah ◽  
Sean R Mendez ◽  
Philip E Dormish ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Myocardial Injury ◽  
Troponin T ◽  
Clinical Care ◽  
High Sensitivity ◽  
Severity Of Injury ◽  
High Sensitivity Troponin T ◽  
One Year ◽  
Hospital Cardiac Arrest

Introduction: Myocardial injury is common after out-of-hospital-cardiac arrest (OHCA). However, little is known about the role of early serial hs-TnT in patients with OHCA for identifying myocardial injury, and whether the prevalence and severity of injury differs according to cardiac (CV) vs noncardiac (non-CV) cause of OHCA. Hypothesis: Early hs-TnT will demonstrate high rates of myocardial injury after OHCA regardless of etiology. However, in the first 6 hours after OHCA the extent of hs-TnT elevation and rate of rise will be higher in patients with CV vs non-CV etiology. Methods: Multicenter retrospective study including OHCA patients presenting from 4/1/2018 to 4/1/2019. Hs-TnT was drawn as part of routine clinical care. Results: Baseline hs-TnT was measured in 120 patients after OHCA due to CV (n=51) and non-CV (n=69) etiologies, with subsequent serial hs-TnT values at 1hr, 3hrs, and 6hrs. Hs-TnT was greater than the 99 th percentile in 97% (115/120) of patients and myocardial injury (hs-TnT> 52ng/L) was detected in 88% (105/120) of patients (no difference between CV vs non-CV etiology). Median hs-TnT values were compared between CV and non-CV etiologies of OHCA identifying no difference in hs-TnT at baseline (Figure: 54 [IQR 18-134] vs. 41 [IQR 19-100]; p=0.357) but significantly higher hs-TnT in patients with CV etiology at 1hr (159 [IQR 80-392] vs 93 [IQR 42-247]; p=0.049), 3hrs (400 [IQR 168-1005] vs 151 [IQR 75-401] p=0.009), and 6hrs (746 [IQR 248-1965] vs 251 [IQR 75-580]; p=0.001). Additionally, hs-TnT rise from baseline was present in both CV and non-CV etiologies but was significantly higher in patients with CV etiology (p = 0.005). Conclusions: As identified by hs-TnT, myocardial injury was prevalent in patients with both CV and non-CV cause of OHCA. Baseline hs-TnT was no different in patients with CV vs non-CV cause, however, over the first 6 hours both absolute value and rate of hs-TnT rise were significantly higher for patients with CV vs non-CV etiology of OHCA.

Anti-Semitism including the Holocaust

2018 ◽  
Author(s):  
Joshua Schuster
Keyword(s):  
Cultural Values ◽  
20Th Century ◽  
19Th Century ◽  
Minority Group ◽  
Early 20Th Century ◽  
Anti Semitism ◽  
The Holocaust ◽  
The 19Th Century

Anti-Semitism, a term coined in Europe at the end of the 19th century, is the hatred of Jews and Jewishness, the latter being perceived in widely varying and contradictory ways. By the early 20th century, Jewishness was associated negatively with capitalism as well as with Communism and an adherence to ancient, outmoded beliefs and keenness toward urban and modernist sensibilities. Purveyors of anti-Semitism drew caricatures of Jews to fit a variety of exclusionary agendas, casting blame on the minority group for upsetting Christian, nativist, and purist values in politics, nationalism, religion, or culture. Modernist artists who were prone to agree with arguments that foretold the decline of civilization drew on the figure of the Jew to embody a series of malaises, depicting Jews as unwanted, archetypal Others to Western cultural values.

scholarly journals A new role of unruly product design based on “Transformed Objects” design approach

2018 ◽  
Vol 178 ◽  
pp. 05015
Author(s):  
Athanasios Manavis ◽  
Nikoleta Kapakiari ◽  
Gheorghe Oancea
Keyword(s):  
Product Design ◽  
Cultural Values ◽  
20Th Century ◽  
Modern Society ◽  
Illustrative Case ◽  
Post Modernism ◽  
Main Effect ◽  
Basic Image ◽  
Modification Of Materials

Nowadays, the movement of Post-Modernism, which appeared in 20th century, influences the art and the design of products. It is considered that the investigation and the undermining, which construct the modern society, compel a traditional prioritization based on cultural values. Furthermore, today the main effect is the image as the users opt to purchase their products by the appearance that is more substantial than the usage. For that reason, the alteration of daily products is the cause of this paper so that the consumers feel confused by them. Namely the basic image of a product may be the same as or similar to an original object, but it may alter the use of it. The viewer should interpret the image differently such as his experience and his belief. In addition, the change of visual messages can be achieved by the complexity of geometry, the combination of objects and the modification of materials. This is defined by the movement of Unruly design that aims for offering a new aesthetic of products. Finally, the goal of this paper is to present a number of illustrative case studies, which ensure an appropriate interface relationship between the art and product design.

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