Temat: Strain Index - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Long-distance Running and its Effects on Cardiorespiratory Adaptation and Physiological Strain in Marathon Runners
Autorzy:: Przybyła, Katarzyna
Żebrowska, Aleksandra
Posmysz, Anna
Manowska, Beata
Pokora, Ilona
Żak, Agata
Powiązania:: https://bibliotekanauki.pl/articles/1054890.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:: marathon
physiological strain index
spirometry
Opis:: Popularity of long-distance running has increased as well as number of female and male marathon runners. Whilst research into physiological characteristics of endurance trained athletes has significantly increased there are only few studies on the risk factors for respiratory failure in marathon runners. Therefore, the aim of the study was to evaluate the differences in respiratory function and the physiological strain in the response to exercise stress in marathon runners. Twenty three subjects (aged 36.1 ±11.6 years) participated in a marathon running. Prior to the run and after its completion, body mass and composition, spirometry and body temperature were measured. Based on pre- and post-run temperature and changes in heart rate, the physiological strain index (PSI) was calculated. Long-distance running significantly decreased the temperature of body surfaces (p < 0.05); no significant effects were observed regarding aural canal temperature and physiological strain index (PSI). Compared to resting values, post-marathon spirometry revealed a significant decrease in post-marathon forced expiratory volume (p < 0.05), peak expiratory flow (p < 0.05) and maximal expiratory flow values (p < 0.05). In conclusion, the long-distance running results in functional changes within the respiratory system which may limit the adaptive potential and decrease exercise tolerance.
Źródło:: Central European Journal of Sport Sciences and Medicine; 2016, 13, 1; 81-87
2300-9705
2353-2807
Pojawia się w:: Central European Journal of Sport Sciences and Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Development of Prolonged Standing Strain Index to Quantify Risk Levels of Standing Jobs
Autorzy:: Halim, I.
Omar, A. R.
Powiązania:: https://bibliotekanauki.pl/articles/90704.pdf
Data publikacji:: 2012
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: prolonged standing strain index (PSSI)
standing jobs
muscle fatigue
comfort
control measures
Opis:: Many occupations in industry such as metal stamping workers, electronics parts assembly operators, automotive industry welders, and lathe operators require working in a standing posture for a long time. Prolonged standing can contribute to discomfort and muscle fatigue particularly in the back and legs. This study developed the prolonged standing strain index (PSSI) to quantify the risk levels caused by standing jobs, and proposed recommendations to minimize the risk levels. Risk factors associated with standing jobs, such as working posture, muscles activity, standing duration, holding time, whole-body vibration, and indoor air quality, were the basis for developing the PSSI. All risk factors were assigned multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2012, 18, 1; 85-96
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Job Level Risk Assessment Using Task Level Strain Index Scores: A Pilot Study
Autorzy:: Drinkaus, P.
Bloswick, D. S.
Sesek, R.
Mann, C.
Bernard, T.
Powiązania:: https://bibliotekanauki.pl/articles/90342.pdf
Data publikacji:: 2005
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: Strain Index
Distal Upper Extremity (DUE)
multi-task risk assessment
ocena ryzyka zawodowego
choroby narządów ruchu
obciążenie fizyczne
kończyna górna
siła mięśni
Opis:: This paper explores 2 methods of modifying the Strain Index (SI) to assess the ergonomic risk of multi-task jobs. Twenty-eight automotive jobs (15 cases and 13 controls) were studied. The first method is based on the maximum task SI score, and the second method is modeled on the NIOSH Composite Lifting Index (CLI) algorithm, named cumulative assessment of risk to the distal upper extremity (CARD). Significant odds ratios of 11 (CI 1.7–69) and 24 (CI 2.4–240) were obtained using the modified maximum task and CARD, respectively. This indicates that modification of the SI may be useful in determining the risk of distal upper extremity injury associated with a multi-task job.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2005, 11, 2; 141-152
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A Body Characteristic Index to Evaluate the Level of Risk of Heat Strain for a Group of Workers With a Test
Autorzy:: Lu, S.
Peng, H.
Gao, P.
Powiązania:: https://bibliotekanauki.pl/articles/89730.pdf
Data publikacji:: 2014
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: heat environment
physical fitness
anthropometric characteristic
index
heat strain
środowisko cieplne
sprawność fizyczna
antropometria
Opis:: The purpose of this study was to develop a body characteristic index (BCI) based on the distribution of maximal oxygen uptake per body mass (VO2max/mass), body surface area per body mass (BSA/mass), and percentage of body fat (Fat%) to evaluate the relative level of individual physiological responses to heat strain in a group of workers. BCI was based upon the data obtained from 10 males and 10 females exercising for 60 min on a treadmill at 2 relative exercise intensities of 25% and 45% VO2max in mild, warm wet, and hot dry climate condition, separately. BCI was developed into 2 formulas, which were proved to be better predictors for heat strain responses than each individual characteristic, and more sensitive than body type to describe the distributions of individual characteristics and distinguish the differences in physiological responses to heat.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2014, 20, 4; 647-659
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Impact of processing parameters on surface roughness and strain hardening of two-phase stainless steel
Autorzy:: Dyl, Tomasz Cyryl
Charchalis, Adam
Stradomski, Grzegorz
Rydz, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/242598.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing process
index of surface roughness reduction
degree of relative strain hardening
two-phase stainless steel
Opis:: Products used in the construction of machines and shipbuilding as well as petrochemical industry, such as shafts, bars, pipes and the like from two-phase stainless steel are currently very popular. It is required that they meet certain quality criteria. They must be characterized by suitable properties of the surface layer to meet the requirements of potential buyers. In the article impact of processing parameters on the degree of relative strain hardening and index of surface roughness reduction were presented. The burnishing process was carried out for two-phase stainless steel. Burnishing process of the shafts neck was performed using burnisher roller. The experimental research were obtained in the surface layer increase in hardness and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion. The experimental research by application of the burnishing process was made in the Laboratory of Production Engineering. After the studies it was found that the hardness of the surface layer and the roughness of the shaft necks an important influenced by technological parameters of processing (burnishing speed, feed rate and depth of burnishing). The objective of applying burnishing process may be, for example, the need to increase surface smoothness and dimensional accuracy of part.
Źródło:: Journal of KONES; 2019, 26, 2; 37-44
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Compressibility of kaolinite treated with fly ash from fluidized bed combustion
Ściśliwość mieszaniny kaolinu i popiołu lotnego z fluidalnego spalania węgla
Autorzy:: Knapik, K.
Bzówka, J.
Russo, G.
Powiązania:: https://bibliotekanauki.pl/articles/390352.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: kaolinite
fly ash
fluidized bed combustion
porosity index
volume strain
kaolin
popiół lotny
fluidalne spalanie węgla
wskaźnik porowatości
odkształcenie objętościowe
Opis:: Waste products such as fly ash can be an economically advantageous alternative for lime and cement in ground improvement techniques. Current state of knowledge indicates the possibility of using this material successfully in various engineering projects. However, the chemical composition of fly ash is related to the type of coal and combustion technology used in power plant. This fact indicates need for further studies aiming determination the effect of fly ash addition on soil properties. Rate of soil improvement considered in macro level includes designation of treated soil mechanical properties, inter alia compressibility characteristics. Presented results of laboratory tests are a part of a larger experimental work aiming to determine the suitability of fly ash from fluidized bed combustion for the purpose of soil strengthen with the use of selected ground improvement.
Odpady takie jak popioły lotne mogą stanowić korzystną pod względem ekonomicznym alternatywę dla wapna i cementu w technikach wzmacniania podłoża gruntowego. Obecny stan wiedzy wskazuje na możliwość wykorzystywania tego materiału z powodzeniem w różnych przedsięwzięciach inżynierskich. Jednakże skład chemiczny popiołów lotnych jest związany z rodzajem węgla oraz technologią spalania przyjętą w elektrowni. Ten fakt wskazuje na konieczność poszerzania bazy doświadczalnej, mającej na celu określenie wpływu dodatku popiołu lotnego na właściwości gruntu. Stopień wzmocnienia gruntu rozpatrywany w skali makro obejmuje oznaczenie mechanicznych właściwości gruntu wzmacnianego, w tym charakterystyki ściśliwości. Przedstawione wyniki badań laboratoryjnych stanowią część projektu badawczego, mającego na celu określenie przydatności popiołów lotnych pochodzących z fluidalnego spalania węgla do celów wzmacniania gruntu przy wykorzystaniu wybranych technik wzmacniania podłoża gruntowego.
Źródło:: Budownictwo i Architektura; 2014, 13, 2; 33-38
1899-0665
Pojawia się w:: Budownictwo i Architektura
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Mechanical properties of wheat grain in relation to internal cracks
Autorzy:: Wozniak, W.
Powiązania:: https://bibliotekanauki.pl/articles/26299.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: strain
spring wheat
wheat
endosperm structure
wheat grain
moisture treatment
moisture content
internal crack
elasticity
stress
mechanical property
damage index
Źródło:: International Agrophysics; 2001, 15, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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