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Wyszukujesz frazę "Sen, P." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
In silico prediction and characterization of three-dimensional structure of actin-1 of Arabidopsis thaliana
Autorzy:
Sahu, M.
Dehury, B.
Sarmah, R.
Sahoo, S.
Sahu, J.
Sarma, K.
Sen, P.
Modi, M.K.
Barooah, M.
Powiązania:
https://bibliotekanauki.pl/articles/80321.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
actin-1
protein sequence
Arabidopsis thaliana
comparative modelling
three-dimensional structure
molecular dynamics simulation
Opis:
Actin-1 is a ubiquitous protein belonging to the reproductive class of Actin family in Arabidopsis thaliana . This protein is involved in the formation of filaments that are major components of the cytoskeleton. Despite the importance of this protein, very little information is available regarding its structure and function in plants. In this study, analysis of the protein sequence was done and comparative model of Actin-1 was constructed (UNIPROT ID: P0CJ46) from Arabidopsis thaliana using the crystal structure of Dictyostelium discoideum actin (PDB ID: 1NLV-A) as template employing Modeller version 9.9. The stable structure was generated by 5 nanosecond molecular dynamics simulation steps using GROMOS43A1 96 force field that characterized its structural and dynamic feature. The biochemical function of the final simulated structure was also investigated using PROFUNC. The molecular simulation study suggested that the modeled Actin-1 protein retain its stable conformation in aqueous solution. The predicted binding sites in the modeled Actin-1 protein are very informative for further protein-ligand interaction study.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomic Study on the Manual Component Insertion Lines for Occupational Health and Safety Improvements
Autorzy:
Sen, R. N.
Yeow, P. H. P.
Powiązania:
https://bibliotekanauki.pl/articles/90245.pdf
Data publikacji:
2003
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ergonomic interventions
occupational health and safety
printed circuit assembly
ergonomia
warunki pracy
bezpieczeństwo i higiena pracy
praca przy taśmie montażowej
Opis:
The study aimed at reducing the occupational health and safety problems faced by the manual component insertion operators. Subjective and objective assessments, and direct observations were made in the printed circuit assembly factory. Simple and low-cost ergonomic interventions were implemented, that is, repairing chairs, reducing high workloads, assigning operators to a maximum of 2 workstations, confining machines that emitted bad smell and much noise, and providing finger work aids. The results of the interventions were reductions in operators’ work discomforts, that is, chair discomfort (by 90%), high work stress, and discomfort due to frequent change of their workstations. Their health hazards were also eliminated, that is, inhalation of toxic fumes, exposure to too much noise, and pain due to pressing sharp components.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2003, 9, 1; 57-74
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomics Improvements of the Visual Inspection Process in a Printed Circuit Assembly Factory
Autorzy:
Yeow, P. H. P.
Sen, R. N.
Powiązania:
https://bibliotekanauki.pl/articles/90706.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
occupational health and safety
eye problems
quality
productivity
cost savings
ergonomia
kontrola jakości materiału
choroby oczu
Opis:
An ergonomics improvement study was conducted on the visual inspection process of a printed circuit assembly (PCA) factory. The process was studied through subjective assessment and direct observation. Three problems were identified: operators’ eye problems, insufficient time for inspection and ineffective visual inspection. These problems caused a huge yearly rejection cost of US $298,240, poor quality, customer dissatisfaction and poor occupational health and safety. Ergonomics interventions were made to rectify the problems: reduced usage of a magnifying glass, the use of less glaring inspection templates, inspection of only electrically non-tested components and introduction of a visual inspection sequence. The interventions produced savings in rejection cost, reduced operators’ eye strain, headaches and watery eyes, lowered the defect percentage at customers’ sites and increased the factory’s productivity and customer satisfaction.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2004, 10, 4; 369-385
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomic evaluation of physiological stress of building construction workers associated with manual material handling tasks
Autorzy:
Saha, P.
Basu, B.
Devashish Sen, D.
Powiązania:
https://bibliotekanauki.pl/articles/1918467.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Construction industry
Manual Material Handling
posture
peak heart rate
Opis:
Purpose: In India, the cost of manpower is very low; hence Manual Material Handling (MMH) is the cheapest solution. This study aimed to quantify the cardiac strain and postural stress of male building construction workers associated with MMH tasks. Materials and methods: Mean (SD) age (years) and job experience (years) of the workers were 31.0(4.65) and 8.8 (3.23), respectively (n=35). Working peak heart rate was recorded by polar heart rate monitor, posture analysis was done by the Ovako Working Posture Analysis System (OWAS) and the Rapid Entire Body Assessment (REBA) method, body part discomfort was assessed by the Nordic questionnaire, and perceived exertion was evaluated by the Borg scale. Two-tailed unpaired Student’s t test was performed between peak heart rate of workers associated with MMH tasks and upper extremity intensive tasks (n=31). Results: Results revealed that mean peak heart rate of the workers was significantly different (higher) compared with that of the upper extremity intensive workers (p<0.05). This study showed that most of the working postures were hazardous. The magnitude of risk for musculoskeletal disorders (MSD) was much higher as per REBA compared with OWAS. Most of the workers suffered from pain in the head, neck, shoulder, lower back, and arm region. As per the Borg scale, the rate of perceived exertion was ‘hard and heavy’ among most of the workers (68.57%). Conclusions: Postural stress and cardiac strain beyond the safe limit indicates the heavy nature of the job. Load limit optimization, ergonomic lifting technique, and rescheduled work-rest cycle are essential to reducing physiological and perceived work load.
Źródło:
Progress in Health Sciences; 2017, 7(1); 54-62
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Music Playlist Generation using Facial Expression Analysis and Task Extraction
Autorzy:
Sen, A.
Popat, D.
Shah, H.
Kuwor, P.
Johri, E.
Powiązania:
https://bibliotekanauki.pl/articles/908868.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
facial expression analysis
emotion recognition
feature extraction
viola jones face detection
gabor filter
adaboost
k-NN algorithm
task extraction
music classification
playlist generation
Opis:
In day to day stressful environment of IT Industry, there is a truancy for the appropriate relaxation time for all working professionals. To keep a person stress free, various technical or non-technical stress releasing methods are now being adopted. We can categorize the people working on computers as administrators, programmers, etc. each of whom require varied ways in order to ease themselves. The work pressure and the vexation of any kind for a person can be depicted by their emotions. Facial expressions are the key to analyze the current psychology of the person. In this paper, we discuss a user intuitive smart music player. This player will capture the facial expressions of a person working on the computer and identify the current emotion. Intuitively the music will be played for the user to relax them. The music player will take into account the foreground processes which the person is executing on the computer. Since various sort of music is available to boost one's enthusiasm, taking into consideration the tasks executed on the system by the user and the current emotions they carry, an ideal playlist of songs will be created and played for the person. The person can browse the playlist and modify it to make the system more flexible. This music player will thus allow the working professionals to stay relaxed in spite of their workloads.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2016, 16, 2; 1-6
1732-1360
2083-3628
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of laser diodes and photodetectors on multiple-quantum wells at the hot-metal pyrometry
Autorzy:
Sen'kov, A. G.
Firago, V. A.
Kononenko, V. K.
Christol, P.
Powiązania:
https://bibliotekanauki.pl/articles/153735.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
pyrometry
spectroreflectometry
near-infrared range
photodetector
laser diode
methodical error
pirometria
spektroreflektometria
zakres bliskiej podczerwieni
fotodetektor
dioda laserowa
pomyłka metodyczna
Opis:
In the paper, the method of relative spectroreflectometry at using the infrared photodetectors with a wide diapason of the spectral photosensitivity is suggested. Methodical errors at exponential and power dependencies of the emissivity of an object on the wavelength are analysed. Possible design of a pyrometer for measurements of temperature of hot metals is described and attractiveness of quantum-well laser diodes and superlattice photodetectors based on the GaSb compounds is discussed.
W pracy zaproponowano metodę spektrofotometrii porównawczej z wykorzystaniem fotodetektorów podczerwieni o szerokim zakresie czułości spektralnej. Określono błędy systematyczne związane z wykładniczą i kątową zależnością od długości fali i współczynnika emisyjności obiektów. Przedstawiono jedną z możliwych konstrukcji pirometru do pomiaru rozgrzanych metali. Dyskutuje się również możliwość zastosowania diod laserowych o rozmiarach kwantowych oraz fotodetektorów zbudowanych w oparciu o złącza GaSb.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 597-600
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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