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Wyświetlanie 1-6 z 6
Tytuł:
Kinetin affects the level of chloroplast polyamines and transglutaminase activity during senescence of barley leaves
Autorzy:
Sobieszczuk-Nowicka, Ewa
Wieczorek, Przemysław
Legocka, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1040582.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
barley leaves
senescence
transglutaminases
chloroplasts
kinetin
polyamines
Opis:
We analysed the level of polyamines (PAs) bound to thylakoids and the level and activity of thylakoid transglutaminases throughout barley leaf senescence, retarded by kinetin. The level of PAs bound to thylakoids changed in senescing barley leaves: bound putrescine (PU) and spermidine (SD) increased throughout senescence, whereas bound spermine (SM) decreased. Kinetin diminished the increase in thylakoid-bound PU and SD and almost completely abolished the decrease of the bound SM. These data suggest different roles of PU/SD and SM in thylakoid degradation. Immunodetection of transglutaminases (TGase) in thylakoid fraction revealed three bands of 33, 58 and 78 kDa. During senescence the intensity of all bands increased and it was correlated with an increase in TGase activity. Kinetin down-regulated the accumulation of the 58- and 78-kDa TGases and the TGase activity. We postulate that formation of covalent bonds between PAs and proteins by TGase is involved in chloroplast senescence. The kinetin-mediated preservation of low TGase levels and activity throughout leaf senescence may represent an important component of the mechanism of kinetin action in the retardation of leaf senescence.
Źródło:
Acta Biochimica Polonica; 2009, 56, 2; 255-260
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional features and hygienic aspects of LED lamps
Cechy użytkowe i aspekty higieniczne lamp ledowych (LED)
Autorzy:
Janosik, Elżbieta
Marzec, Stanisław
Marczak, Wojciech
Nowicka, Jolanta
Zachara, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1177514.pdf
Data publikacji:
2015
Wydawca:
Instytut Medycyny Wsi
Tematy:
"Correlated Colour Temperature"
"LED lamp"
"blue light"
"glare"
"lighting conditions"
Opis:
Aim of the study: The aim of this study was to identify characteristics of the LED lamps and their influence on perceptual abilities and feeling of a human. Materials and methods: Technical parameters of ten chosen LED sources of light were determined. The sources varied among each other, according to the shape, colour temperature, colour rendering index and also name of the manufacturer. For each of the analysed sources of light, the illuminance, lighting uniformity, lighting luminance and degree of glare were determined. Moreover, also a subjective evaluation of the lighting conditions created by those lighting sources was performed. Results and conclusions: The study results have shown that the majority of the analysed sources of light provided their users with a good visibility and comfort of vision, but on the other hand, if used in an inappropriate way, they may be the reason for the unaccepted glare. It has been stated that the appropriate use and earlier – the well-thought-out choice of the LED sources of light are crucial. One has to consider the luminous flux, the colour temperature, the shape, as well as the manufacturer, who guarantees the quality and the safety class of the LED source of light.
Cel badań: Celem badań było poznanie właściwości ledowych źródeł oświetleniowych i ich wpływu na możliwości percepcyjne człowieka oraz jego samopoczucie. Materiał i metodyka badań: Określono parametry techniczne dziesięciu, wybranych źródeł LED, różniących się między sobą kształtem, mocą, temperaturą barwową, wskaźnikiem oddawania barw, a nawet marką producenta. Dla każdego, badanego źródła wyznaczono natężenie oświetlenia, równomierność oświetlenia, luminancję świetlną oraz stopień olśnienia, a także dokonano subiektywnej oceny warunków oświetlenia, stwarzanych przez te źródła. Wyniki i wnioski: Wykazano, że większość z badanych źródeł LED zapewnia dobrą widoczność i wygodę widzenia, ale jednocześnie przy nieprawidłowym stosowaniu może być powodem nieakceptowalnego olśnienia. Stwierdzono, że bardzo istotne jest prawidłowe użytkowanie oraz wcześniej – przemyślany wybór źródła LED, biorący pod uwagę strumień świetlny, temperaturę barwową, kształt, a tak- że markę producenta, która gwarantuje jakość i klasę bezpieczeństwa źródła LED.
Źródło:
Medycyna Środowiskowa - Environmental Medicine; 2015, 18, 4; 15-22
1505-7054
2084-6312
Pojawia się w:
Medycyna Środowiskowa - Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chain of events application in workplaces in safety engineering
Autorzy:
Ignac-Nowicka, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/2064922.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
sequence of events
hazard identification
security deficits
chain events sequence
Opis:
The article presents the hazard identification process as a sequence of events that leads to accident and/or material loss at the workplace. The chain of events can be described as an orderly set of circumstances conducive to the emergence of a threat. The article presents an analysis of the application of elements of the events theory to the identification of hazards in an industrial plant on the example of a gas explosion. The circumstances supporting the emergence of a gas explosion hazard were identified by determining the direct and indirect causes of the event and the main conditions leading to the event (loss). Also indicated is the cause of gas explosion hazard, which is the initiating factor in the chain of events.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 118--125
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of static loads for manual warehouse work using computer simulation – case study
Autorzy:
Ignac-Nowicka, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/24202586.pdf
Data publikacji:
2022
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
static loads of the employee
ergonomic load assessment
load simulation methods
static loads on the spine
forced working postures
manual work
manual handling
Opis:
This article presents an analysis of the static loads on the human body during selected manual unloading tasks carried out by warehouse workers in a logistics company. The aim of the presented analyses is to minimize static loads in the work process and thus make the employees’ work more comfortable. A tool in the form of 3D SSPP software for ergonomic workload assessment was used to carry out static load analyses. For the two selected activities, the values of the developed forces of statically working muscles and the forces acting on the vertebrae of the spine were determined. For the values of static loads identified, based on the simulation of the 3D SSPP program, modifications in work posture and a change in the manner of performing the tested activities were devised. Moreover, the proposed reorganization of the tasks examined was verified by the reassessment of the static loads on the muscles using the 3D SSPP tool. The analyses carried out after the reorganization of work confirmed the reduction in static loads and the improvement in work comfort for the analyzed manual tasks.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 72 (144); 17--24
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smart City idea: use of peoples opinions on the environmental threats for intelligent management of the city
Autorzy:
Ignac-Nowicka, Jolanta
Zarebinska, Danuta
Kaniak, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2064892.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
smart city
atmospheric
air pollution
urban environment
management
air quality monitoring
Opis:
Managing the natural environment in the city is an important element of city management. Smart city authorities should take into account the opinion of residents about the comfort of living in the urban environment management strategy. A very important element of the natural environment in the city is air quality, which significantly affects the comfort of living in the city. The article presents surveys of opinions of the residents of a selected city in Silesia in Poland. The respondents' knowledge on the sources of air pollution in the city, the perceived health effects resulting from polluted atmospheric air and the expectations of residents towards the city authorities were examined using the anonymous questionnaire method. Residents' behavior in the situation of increased air pollution was also examined. On the basis of surveys, prophylactic pro-ecological activities were identified with the highest degree of acceptance of the local community as potential directions of urban environment management. The implementation of such activities, taking into account the opinions and preferences of the residents, is part of the co-management of the intelligent city.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 140--150
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visual Monitoring as a Tool in Industrial Security Engineering. Case Study
Autorzy:
Ignac-Nowicka, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/2064632.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
video monitoring
supervision of the production process
video surveillance zones
Opis:
The article presents the use of video monitoring in a production company on the example of municipal thermal power plant. After analyzing the hazards and work inconvenience occurring in the analyzed enterprise, video surveillance zones have been designated with the division into the indoor and outdoor monitoring system. Video surveillance is provided for production, auxiliary and delivery processes. Moreover, video monitoring performs a control function over the occupation health in workstations at risk of explosion or fire. In addition, observation points have been set up in the visual monitoring system, among which the internal ones are served by the dispatcher responsible for the production process, while the external are operated by security guards of the facility.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 107--119
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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