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    Wyświetlanie 1-34 z 34
    Tytuł:
    Isometric Pull-Push Strengths in Workspace. 1, Strength Profiles
    Autorzy:
    Das, B.
    Wang, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/90551.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    push and pull strengths
    workspace reach levels
    vertical and horizontal angles
    workstation design
    pchanie
    siła mięśni
    praca mięśni
    pozycja przy pracy
    pozycja siedząca
    pozycja stojąca
    Opis:
    The isometric pull and push strength profiles of males and females were determined in seated and standing positions in the workspace. The strongest pull strength location was at extreme reach vertically above the shoulder for both males and females. The greatest pull strength of 400 Newtons (N) for males was recorded in the seated and standing positions. Females. pull strengths in the seated and standing positions were 222 and 244 N, respectively. The strongest push strength was always at the maximum reach at the overhead location. Males. maximum push strength was 227 N in the seated position and 251 N in the standing position. Females’ maximum push strength was 96 N in the seated position and 140 N in the standing position. On the average the strength in the standing position was 79% of the seated position. The push strength was 71% of the pull strength and females were 56% as strong as males.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 1; 43-58
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isometric Pull-Push Strengths in Workspace. 2, Analysis of Spatial Factors
    Autorzy:
    Das, B.
    Wang, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/90758.pdf
    Data publikacji:
    2004
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    push and pull strengths
    workspace reach levels
    vertical and horizontal angles
    workstation design
    pchanie
    siła mięśni
    praca mięśni
    pozycja przy pracy
    pozycja siedząca
    pozycja stojąca
    projektowanie miejsc pracy
    Opis:
    The effect of reach levels, horizontal angles and vertical angles on isometric pull and push strengths of males and females in standing and seated positions was determined. The effect of reach levels on strength varied as a consequence of force direction, working position and gender. Reach level has a significant effect on women's pull strength in the seated position and on push strength in the standing position. The strength value was significantly greater in the extreme reach than in maximum or normal reach. Vertical angle ö had a significant effect on strength consistently in all cases. Strength values increased significantly with the increase of ö angles from 0º to 45º to 90º. The horizontal angle è had a significant influence only on the pull strength of standing and seated men and standing women (not seated woman). The maximum strength was significantly greater at è = 90º.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2004, 10, 1; 59-64
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isometric Pull and Push Strengths of Paraplegics in the Workspace: 1. Strength Measurement Profiles
    Autorzy:
    Das, B.
    Black, N. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/90074.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    measurement
    pull and push strengths
    workspace
    reach envelopes
    paraplegics
    pomiary
    ciągnięcie
    pchanie
    siła mięśni
    praca mięśni
    Opis:
    The isometric strength profiles of male and female paraplegics were determined for pull and push strengths in the normal, maximum, and extreme working reach envelopes. A computerized isometric strength measurement system was designed and constructed for the purpose. The strongest pull location was at extreme reach vertically above the shoulder and the strength values for males and females were 473 and 318 newtons (N), respectively. The strongest push location was at maximum reach, at vertical ($) angle of 45° and at horizontal (6) angle of 45° for males and at 0° for women and the strength values were 235 and 172 N, respectively. The nature of the strength profiles was found to be similar for both the sexes. The pull and push strengths of the female were 77 and 68% that of the male, respectively.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 1; 47-65
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Participative Versus Assigned Production Standard Setting in a Repetitive Industrial Task: A Strategy for Improving Worker Productivity
    Autorzy:
    Das, B.
    Shikdar, A. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/89753.pdf
    Data publikacji:
    1999
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    participative standard
    assigned standard
    performance feedback
    repetitive industrial task
    worker productivity
    produktywność pracowników
    wydajność pracowników
    produkcja przemysłowa
    Opis:
    The participative standard with feedback condition was superior to the assigned difficult (140% of normal) standard with feedback condition in terms of worker productivity. The percentage increase in worker productivity with the participative standard and feedback condition was 46%, whereas the increase in the assigned difficult standard with feedback was 23%, compared to the control group (no standard, no feedback). Worker productivity also improved significantly as a result of assigning a normal (100%) production standard with feedback, compared to the control group, and the increase was 12%. The participative standard with feedback condition emerges as the optimum strategy for improving worker productivity in a repetitive industrial production task.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 1999, 5, 3; 417-430
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isometric Pull and Push Strengths of Paraplegics in the Workspace: 2. Statistical Analysis of Spatial Factors
    Autorzy:
    Das, B.
    Black, N. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/89871.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    isometric strength
    pull and push strengths
    workspace reach levels
    horizontal and vertical angles
    paraplegics
    analiza statystyczna
    siła mięśni
    praca mięśni
    Opis:
    The effect of reach levels, horizontal angles, and vertical angles on isometric pull and push strengths of male and female was determined. Highly significant increases in men’s push strength were found between extreme to maximum reaches, and from extreme to normal reaches. However, for women’s push strength, a significant increase was found only between extreme to maximum reach. Significant or highly significant increases were found in men’s and women’s pull strength between the horizontal angle (0) sagittal through the active shoulder (90°) and other angles (0, 45, and 135°). However, for men’s push strength, highly significant increases were found between the horizontal angle 45° from the frontal plane, and other angles. For women’s push strength, significant or highly significant increases were found between the horizontal angles 0° and angles of 90 and 135°. For men’s and women’s pull strength, significant or highly significant increases were found between the vertical angle (), 90°, and other angles (-20, 0, and 45°). Similar increases were found for women’s push strength between the 45° angle and other angles. In the design of a workstation for paraplegics that requires pull and push forces, consideration must be given to the spatial factors.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 1; 67-80
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Low Back Pain Risks in a Beef Skinning Operation
    Autorzy:
    Das, B.
    Sengupta, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/89837.pdf
    Data publikacji:
    2000
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    low back pain
    biomechanical analysis
    ergonomic analysis
    posture analysis
    meat processing
    ból pleców
    analiza biomechaniczna
    analiza ergonomiczna
    postawa
    Opis:
    The low back pain risks in a beef skinning operation at a high stand kill floor workstation was evaluated. The increases in compressive forces at lower back (L5/S1) between normal slump (back angle 25°, measured in the sagittal plane) and severe (45°) and between normal slump and very severe (70°) bent back postures were 387 N or 28% and 616 N or 45%, respectively. The high spine load coupled with high level of repetition can have a high probability of fatigue failure in the spine structural members. Non-neutral back posture for a large portion of the total work time can be a low back pain risk factor. The videotape analysis showed that the times involved during the task performance for the bent back (more than 25°) and severe bent back (more than 45°) were 48.4 and 33.5% of the total cycle time, respectively. The upper limit from OWAS (Ovako Working Posture Analysis System) for bent back posture is 30% of the total cycle time. The bent and twisted back posture (both more than 25°) time was 10.4% compared to OWAS limit of 5%. This indicated that actions are needed in the near future to alleviate the risk of low back pain. Ergonomics redesign of the workstation was recommended for the operation.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2000, 6, 3; 347-361
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First principles calculations of thermodynamic properties of ZrB2
    Autorzy:
    Wani, T. A.
    Das, B. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240687.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    TMB2
    thermal expansion
    Gruneisen parameter
    debye temperature
    specific heat
    ekspandowanie termiczne
    ciepło właściwe
    rozszerzalność termiczna
    Opis:
    The thermodynamic properties, which are the important bulk properties for solids, have been investigated for ZrB2 under pressure through the quasi harmonic Debye model. The dependences of thermal expansion, Gruneisen parameter, Debye temperature and specific heat on pressure P are successfully obtained. The obtained results are in a good agreement with the available experimental and other theoretical data.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 4; 113--124
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Ergonomic and Occupational Health-Related Problems Among Female Prawn Seed Collectors of Sunderbans, West Bengal, India
    Autorzy:
    Das, B.
    Ghosh, T.
    Gangopadhyay, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/91151.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    musculoskeletal disorders
    physiological stress
    prawn seed collectors
    hand grip strength
    rapid entire body assessment (REBA)
    Opis:
    Sixty female prawn seed collectors and 60 female control subjects from Sajenakhali and Sandeshkhali blocks of Sunderbans, West Bengal, India, were randomly selected to evaluate and compare musculoskeletal disorders and physiological stress. The control group was engaged in domestic work involving minimum handintensive activities. The modified Nordic musculoskeletal questionnaire and rapid entire body assessmentwere used. Most subjects suffered from discomfort in different body parts, especially in the lower back (98%), knees (88%), shoulders (75%), ankles (70%) and feet (67%). This study reveals that female prawn seed collectors suffer from significant physiological load and extreme physiological stress due to prolonged working hours in a standing posture and excessive work pressure. Consequently, all these factors affect female prawn seed collectors’ health and work performance.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 4; 531-540
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptive sliding mode formation control of multiple underwater robots
    Autorzy:
    Das, B.
    Subudhi, B.
    Pati, B. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/229471.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    AUV
    SMC
    passivity
    cooperative control
    Opis:
    This paper proposes a new adaptive sliding mode control scheme for achieving coordinated motion control of a group of autonomous underwater vehicles with variable added mass. The control law considers the communication constraints in the acoustic medium. A common reference frame for velocity is assigned to a virtual leader dynamically. The performances of the proposed adaptive SMC were compared with that of a passivity based controller. To save the time and traveling distance for reaching the FRP by the follower AUVs, a sliding mode controller is proposed in this paper that drives the state trajectory of the AUV into a switching surface in the state space. It is observed from the obtained results that the proposed SMC provides improved performance in terms of accurately tracking the desired trajectory within less time compared to the passivity based controller. A communication consensus is designed ensuring the transfer of information among the AUVs so that they move collectively as a group. The stability of the overall closed-loop systems are analysed using Lyapunov theory and simulation results confirmed the robustness and efficiency of proposed controller.
    Źródło:
    Archives of Control Sciences; 2014, 24, 4; 515-543
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature and Frequency Dependence Electrical Properties of $Zn_{1-x}Ca_{x}O$ Nanoceramic
    Autorzy:
    Das, T.
    Das, B.
    Parashar, K.
    Parashar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398349.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cP
    68.37.xy
    84.37.+q
    72.80.Lc
    77.22.Ch
    Opis:
    This work reports the temperature and frequency dependence electrical properties of Ca doped ZnO ($Zn_{1-x}Ca_{x}O$, x=0.01) nanoceramic synthesized by solid state reaction method. The X-ray spectra show that the synthesized powder has hexagonal wurtzite structure with space group P6₃mc. The average crystallite size decreases with Ca doping. The increase in oxygen positional parameter (u) indicates lattice distortion in the crystal structure. Doping with Ca caused a slight shift in the (101) plane peak towards lower diffraction angle. The formation of pores in field emission scanning electron microscopy micrograph may be due to the defect created by Ca substitution. The electrical property was investigated by impedance spectroscopy in the temperature range 300-500°C. The synthesized sample shows temperature dependence relaxation phenomena and negative temperature coefficient of resistance effects. Electrical conductivity ($σ_{ac}$) increases with increase in temperature as well as with frequency due to the drift mobility of electrons and hole by hopping conduction. Dielectric constant was found to decrease with increase in frequency and temperature. This decreases drastically in the magnitude of approximately < 10 times than the corresponding undoped one.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 6; 1358-1362
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Ergonomic Study on Posture-Related Discomfort Among Preadolescent Agricultural Workers of West Bengal, India
    Autorzy:
    Gangopadhyay, S.
    Das, B.
    Das, T.
    Ghoshal, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/90547.pdf
    Data publikacji:
    2005
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    preadolescence
    agricultural worker
    posture
    discomfort
    rolnictwo
    ergonomia
    młodociani
    pozycja przy pracy
    warunki pracy
    choroby narządów ruchu
    czynniki ryzyka
    Opis:
    In India, particularly in West Bengal, preadolescents are primarily associated with agricultural work in rural areas. Owing to poor socio-economic conditions, they are compelled to carry out a considerable number of manual, rigorous tasks in agricultural fields. The main aim of this study was to investigate postures adopted by preadolescent agricultural workers during individual agricultural activities and to analyze the causes of discomfort related to those postures. Fifty male and 50 female preadolescent agricultural workers were randomly selected and a detailed posture analysis was performed with the Ovako Working Posture Analysis System (OWAS). It was observed that those workers worked continuously in awkward postures during certain agricultural activities. Consequently they suffered from discomfort in different parts of their body. Even though they were very young, they were likely to suffer from serious musculoskeletal disorders in the future.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2005, 11, 3; 315-322
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Orientational Order Parameters of Two Tri-Component Mixtures from Optical Birefringence and X-Ray Diffraction Measurements
    Autorzy:
    Basak, S.
    Dasgupta, P.
    Das, B.
    Das, M.
    Dabrowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492775.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    61.30.-v
    42.70.Df
    Opis:
    Two tri-component mixtures as base mixtures for vertically aligned mode LCD's were prepared. The eutectic compositions were theoretically estimated and experimentally verified from differential scanning calorimetry studies. A room temperature nematic mixture with fairly broad operating range emerged from each of the tri-component mixtures. The optical birefringence of these mixtures at the eutectic composition was measured as a function of temperature. X-ray diffraction measurements were done on these mixtures to obtain the orientational order parameters as a function of temperature. The order parameter values were also determined from birefringence measurements and the results were compared with mean field theory. Structural parameters like intermolecular distance and apparent molecular length have also been determined.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6; 1037-1042
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dielectric Permittivity and Viscoelastic Measurements οf Two Tricomponent Mixtures Consisting οf Laterally Fluorinated Terphenyl Derivatives
    Autorzy:
    Basak, S.
    Dasgupta, P.
    Das, B.
    Das, M.
    Dabrowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400143.pdf
    Data publikacji:
    2013-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.30.-v
    78.20.Fm
    87.19.rd
    87.19.rf
    83.60.Bc
    Opis:
    Two tricomponent room temperature nematic eutectic mixtures ABC and ABD with laterally fluorinated constituents A and B were prepared as base mixtures for vertically aligned mode LCD's. The physical properties of these mixtures viz. birefringence, dielectric anisotropy, bend elastic constant, relaxation time and rotational viscosities were determined in order to compare with the optimum values required to achieve the target specifications of VA mode materials. The dielectric anisotropy, Δ ε, and optical birefringence, Δ n, of these mixtures were found to be in the range of (-1.3 to -1.4) and (0.13 and 0.14), respectively, at around 20°C. The figure of merit for the ABD mixture has been found to be higher than that of ABC mixture throughout the entire temperature range. The pretilt angle effect in the physical parameters has also been studied. At T=20°C, the response time decreases to 25% and 35% for mixture ABC for 2° and 5° pretilt respectively in comparison to zero pretilt. On the other hand, at the same temperature for the ABD mixture these values are reduced by 16% and 35%, respectively.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 4; 714-719
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Ergonomics Study on Posture-Related Discomfort and Occupational-Related Disorders Among Stonecutters of West Bengal, India
    Autorzy:
    Gangopadhyay, S.
    Das, B.
    Das, T.
    Ghoshal, G.
    Ghosh, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/90199.pdf
    Data publikacji:
    2010
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    stonecutters
    OWAS
    posture-related discomfort
    posture
    Opis:
    Stonecutting and setting are important tasks in a construction site. A field study was conducted to assess occupational-related disorders and to conduct ergonomics assessment among stonecutters. The study focused on (a) the duration of work per day, (b) the working environment and working activities and (c) the feeling of discomfort in different parts of the body. A detailed posture analysis was performed with the Ovako working posture analysis system (OWAS). It was observed that stonecutters worked continuously in awkward postures during stonecutting and setting. Consequently, they suffered from discomfort in different parts of their body, specifically in the lower back, knees and shoulders, which mainly prevented them from continuing their work. This study also revealed that stonecutters had to work in congested work areas with a poor level of illumination. The noise level and dust particles emitted during stonecutting activities could affect stonecutters.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2010, 16, 1; 69-79
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of organic inputs on strength and stability of soil aggregates under rice-wheat rotation
    Autorzy:
    Das, B.
    Chakraborty, D.
    Singh, V.K.
    Aggarwal, P.
    Singh, R.
    Dwivedi, B.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/25472.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    tensile strength
    stability
    soil aggregate
    rice
    wheat
    cereal crop rotation
    Opis:
    The study aims to elucidate the impact of organic inputs on strength and structural stability of aggregates in a sandy loam soil. Tensile strength, friability and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm), small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+clay size (<0.053) aggregates were evaluated in soils from a long-term experiment with rice-wheat rotation at Modipuram, India, with different sources and amounts of organic C inputs as partial substitution of N fertilizer. Addition of organic substrates significantly improved soil organic C contents, but the type and source of inputs had different impacts. Tensile strength of aggregates decreased and friability increased through organic inputs, with a maximum effect under green gram residue (rice)-farmyard manure (wheat) substitution. Higher macroaggregates in the crop residue- and farmyard manure-treated soils resulted in a higher aggregate mean weight diameter, which also had higher soil organic C contents. The bulk soil organic C had a strong relation with the mean weight diameter of aggregates, but the soil organic C content in all aggregate fractions was not necessarily effective for aggregate stability. The soil organic C content in large macroaggregates (2-8 mm) had a significant positive effect on aggregate stability, although a reverse effect was observed for aggregates <0.25 mm. Partial substitution of nitrogen by organic substrates improved aggregate properties and the soil organic C content in bulk soil and aggregate fractions, although the relative effect varied with the source and amount of the organic inputs.
    Źródło:
    International Agrophysics; 2014, 28, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance comparision of different routing protocols with fuzzy inference system in manet
    Autorzy:
    Goswami, S
    Joardar, S
    Das, C B
    Powiązania:
    https://bibliotekanauki.pl/articles/101870.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    MANET
    AODV
    DSDV
    DSR
    expert system
    control overhead
    delay
    PDR
    NS-2 software
    Opis:
    An ad hoc wireless network consists of mobile networks which create an underlying architecture for communication without the help of traditional fixed-position routers. There are different protocols for handling the routing in the mobile environment. Routing protocols used in fixed infrastructure networks cannot be efficiently used for mobile ad-hoc networks (MANET), so it requires different protocols. The node moves at different speeds in an independent random form, connected by any number of wireless links, where each node is ready to pass or forward both data and control traffic unrelated to its own use ahead (routing) to other nodes in a flexible interdependence of wireless communication in between. In contrast to infrastructure wireless networks, where the communication between network nodes is take place by a special node known as an access point. It is also, in contrast to wired networks in which the routing task is performed by special and specific devices called routers and switches. In this paper, we consider fuzzy inference system, an attempt has been made to present a model using fuzzy logic approach to evaluate and compare three routing protocols i.e. AODV, DSDV and DSR using effective factor of the number of nodes based on 3 outputs of control overhead, delay and PDR (totally fuzzy system with 4 outputs) in order to select one of these two routing protocols properly under different conditions and based on need and goal. To show efficiency and truth of fuzzy system, three protocols have been evaluated equally using NS-2 simulator and attempt has been made to prove efficiency of the designed fuzzy system by comparing results of simulation of fuzzy system and NS-2 software.
    Źródło:
    Advances in Science and Technology. Research Journal; 2015, 9, 27; 149-156
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    "Das chemisch-physikalische Laboratorium", B. Mühlethaler, "Jahresberichte", 1959 u. 1960 : [recenzja]
    Autorzy:
    Lehmann, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/536083.pdf
    Data publikacji:
    1965
    Wydawca:
    Narodowy Instytut Dziedzictwa
    Tematy:
    dr Bruno Muhlethaler
    fizyko-chemiczne laboratorium badawcze
    muzeum w Zurychu
    Źródło:
    Ochrona Zabytków; 1965, 1; 67-68
    0029-8247
    Pojawia się w:
    Ochrona Zabytków
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Das Heeresunterstützungskommando
    Autorzy:
    Vohland, B.
    Powiązania:
    Wehrtechnik 1996, nr 3, s. 31-36
    Data publikacji:
    1996
    Tematy:
    Dowództwo Wsparcia Wojsk Lądowych organizacja zadania Niemcy, Republika Federalna 1996 r.
    Wojska lądowe dowodzenie organizacja Niemcy, Republika Federalna 1996 r.
    Opis:
    Organizacja dowodzenia siłami lądowymi RFN. Rola i zadania Dowództwa Wsparcia Sił Lądowych.
    Fot., tab., rys., schem.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Nasal Mucormycosis: Our experience with 24 cases
    Autorzy:
    Bakshi, Satvinder Singh
    Das, Soumyajit
    Ramesh, Seepana
    Gopalakrishnan, Suriyanarayanan
    Powiązania:
    https://bibliotekanauki.pl/articles/1397391.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    amphotericin B
    debridement
    invasive fungal infection
    mucormycosis
    mycoses
    rhinocerebral mucormycosis
    zygomycosis
    Opis:
    Background: Mucormycosis is a rare fungal infection affecting people with impaired immunity. The aim of this study is to shed light on the epidemiology, incidence, and outcome of patients with mucormycosis hospitalized at a tertiary care center in Pondicherry. Methods: We conducted a retrospective chart review between January 2008 and January 2018. All patients with proven or probable mucormycosis were included. Results: A total of 24 patients were included. Their median age was 49 years and the majority were males. Comorbidities included mainly hematologic malignancy and diabetes mellitus. A liposomal amphotericin B formulation alone or in combination with other antifungals was used as a first line agent in all patients. Conclusion: The incidence of mucormycosis has significantly increased over the past 10 years at our institution, most likely due to increased risk factors.
    Źródło:
    Polish Journal of Otolaryngology; 2020, 74, 4; 37-40
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of Optimum Value of Y-Capacitor for Reducing Emi in Switch Mode Power Supplies
    Autorzy:
    Jha, M. M.
    Naik, K. B.
    Das, S. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/262807.pdf
    Data publikacji:
    2009
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
    Tematy:
    EMI
    CM noise
    touch current
    Y-capacitor
    Opis:
    Putting a Y-capacitor between the primary ground and secondary ground is a common practice in industry to reduce EMI; but, this capacitor increases touch current. A method is discussed to measure the touch current at circuit design level. An optimum value of Y-capacitor is predicted without exceeding touch current limit. Experimental results of touch current measurements and EMI measurements are analyzed.
    Źródło:
    Electrical Power Quality and Utilisation. Journal; 2009, 15, 2; 47-50
    1896-4672
    Pojawia się w:
    Electrical Power Quality and Utilisation. Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ksylometr Zakładu Dendrometrii WSR w Poznaniu
    Ksilometr konstrukcii razrabotannojj Otdelom Dendrometrii Vyshejj Sel’skokhozjajjstvennojj Shkoly
    Das xylometer der anstalt fur Holzmesskunde der Hochschule fur Landwirtschaft in Poznan
    Autorzy:
    Zabielski, B.
    Witkowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/818225.pdf
    Data publikacji:
    1956
    Wydawca:
    Polskie Towarzystwo Leśne
    Źródło:
    Sylwan; 1956, 100, 11
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rękopiśmienny Antyfonarz Płocki z XIV wieku (Muzeum Diecezjalne w Płocku, B.S.)
    Das handschriftliche Antiphonar von Płock aus dem 14. Jahrhundert (Diözesanmuseum in Płock, B.S.)
    Autorzy:
    Wiśniewski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/1040563.pdf
    Data publikacji:
    2005-06-30
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II
    Tematy:
    Mittelalter
    Manuscript
    Denkmal
    Liturgie
    katholische Kirche
    średniowiecze
    manuskrypt
    zabytek
    liturgia
    Kościół katolicki
    Middle Ages
    manuscript
    antiquity
    liturgy
    Catholic Church
    Opis:
    Neben den Büchern mit liturgischen Texten und notierten Gesängen, die für den Musikwissenschaftler interessant sind, gibt es die besonders im Mittelalter verbreiteten Antiphonäre in denen sich die Vielfalt der liturgischen und musikalischen Traditionen widerspiegelt. Unser Buch - Antiphonar ms. b. s. - dient der Vorbereitung der Liturgie in der Kathedrale in Plock; es befaßt sich ausführlich mit der Zelebration des Stundengebets und bringt Informationen über das Feiern von Andachten. Der Kodex befindet sich zur Zeit im Diözesanmuseum in Plock. Diese Handschrift zählt zusammen 73 Blätter im Format 560 mm x 380 mm. Der Kodex wurde in zwei zerstörte Bretter eingebunden. Aufgrund der Informationen, die innerhalb des Buches stehen, hat man festgestellt, dass der Kodex nochmals im Jahre 1509 eingebunden wurde. Diese Handschrift trägt die Spuren der Beschädigungen in Form von Löchern, Verschmutzungen usw. Der Kodex besitzt aktuell eine Miniatur. Am wahrscheinlichsten besaß er mehrere Miniaturen, weil einige Seiten die Spuren der mechanischen Beschädigungen tragen. Das könnte bedeuten, dass es schon früher Miniaturen gegeben hat. Dieser Kodex wurde durch die kaligraphische Textur geschrieben. Die Texte sind aus dem Heiligenkalender des Monats November entnommen. Der Kodex nennt 10 Heilige. Das bedeutet, dass im Plocker Dom folgende Offizien gesungen wurden: Am 11. November zu Ehren des hl. Martinus, am 13. November zu Ehren des HI. Briccius, am 19. November zu Ehren der HI. Elisabeth, am 22. November zu Ehren der HI. Cecilie, am 23. November zu Ehren des HI. Clementis, am 24. November zu Ehren des HI. Chrisogoni, am 25. November zu Ehren der HI. Katharine und am 29. November zu Ehren der HI. Saturnini, Maurii und Darie. Dieser Kodex war sehr wahrscheinlich einer von vielen Büchern, die während der Liturgie im Dom benutzt wurden. Die Plocker Büchersammlung kennt heute kein ähnliches Exemplar über die Offizien anderer Monate. Dieses Buch zeigt, dass das feierliche Stundengebet im Dom zu Plock das ganze Jahr über gesungen wurde.
    Źródło:
    Archiwa, Biblioteki i Muzea Kościelne; 2005, 83; 375-432
    0518-3766
    2545-3491
    Pojawia się w:
    Archiwa, Biblioteki i Muzea Kościelne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric studies of failure mechanisms in thermal barrier coatings during thermal cycling using FEM
    Autorzy:
    Srivathsa, B.
    Das, D. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/266255.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    thermal barrier coatings
    residual stress
    failure mechanisms
    modeling and simulation
    naprężenia szczątkowe
    mechanizm uszkodzenia
    modelowanie
    symulacja
    Opis:
    Thermal barrier coatings (TBCs) are widely used on different hot components of gas turbine engines such as blades and vanes. Although, several mechanisms for the failure of the TBCs have been suggested, it is largely accepted that the durability of these coatings is primarily determined by the residual stresses that are developed during the thermal cycling. In the present study, the residual stress build-up in an electron beam physical vapour deposition (EB-PVD) based TBCs on a coupon during thermal cycling has been studied by varying three parameters such as the cooling rate, TBC thickness and substrate thickness. A two-dimensional thermomechanical generalized plane strain finite element simulations have been performed for thousand cycles. It was observed that these variations change the stress profile significantly and the stress severity factor increases non-linearly. Overall, the predictions of the model agree with reported experimental results and help in predicting the failure mechanisms.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 899-915
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formulation of the simple Markovian model using fractional calculus approach and its application to analysis of queue behavior of severe patients
    Autorzy:
    Dhar, Soma
    Mahanta, Lipi B.
    Das, Kishore Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/1359228.pdf
    Data publikacji:
    2019-04-25
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    fractional order
    arrival rate
    patients
    fractional calculus
    Opis:
    In this paper, we introduce a fractional order of a simple Markovian model where the arrival rate of the patient is Poisson, i.e. independent of the patient size. Fraction is obtained by replacing the first order time derivative in the difference differential equations which govern the probability law of the process with the Mittag-Leffler function. We derive the probability distribution of the number N(t) of patients suffering from severe disease at an arbitrary time t. We also obtain the mean size (number) of the patients suffering from severe disease waiting for service at any given time t, in the form of E ν 0.5,0.5 (t), for different fractional values of server activity status, ν = 1,0.95,0.90 and for arrival rates α = β = 0.5. A numerical example is also evaluated and analysed by using the simple Markovian model with the help of simulation techniques.
    Źródło:
    Statistics in Transition new series; 2019, 20, 1; 117-129
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of Narcissus latent virus isolates using one-step RT-PCR assay
    Autorzy:
    Berniak, H.
    Komorowska, B.
    Sochacki, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1948.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Ogrodnictwa
    Tematy:
    narcissus latent virus
    virus identification
    reverse transcription polymerase chain reaction
    DAS-ELISA method
    RNA sequence
    cucumber mosaic virus
    polyclonal antibody
    Źródło:
    Journal of Horticultural Research; 2013, 21, 1
    2300-5009
    Pojawia się w:
    Journal of Horticultural Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Test ELISA jego modyfikacje
    Autorzy:
    Zacharzewska, B.
    Treder, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/834924.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    ziemniaki
    choroby roslin
    choroby wirusowe
    choroby bakteryjne
    diagnostyka chorob
    test ELISA
    modyfikacje
    test DAS ELISA
    test koktajl ELISA
    potato
    plant disease
    viral disease
    bacterial disease
    disease diagnosis
    ELISA test
    modification
    Źródło:
    Ziemniak Polski; 2014, 24, 1
    1425-4263
    Pojawia się w:
    Ziemniak Polski
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sprawozdanie komisji wysłanej do wsi Skrzetusz w sprawie cudów figury B.M.V.
    Ingrossatio Commissionis expeditae super miraculis imaginis B.M.V. in villa Skrzetusz de verbo ad verbum
    Report of the Commission sent to the village of Skrzetusz on the miracles of the statue of B.M.V.
    Bericht der Kommission an das Dorf Skrzetusz über die Wunder der Statue von B.M.V.
    Autorzy:
    Ceynowa, Tadeusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2138288.pdf
    Data publikacji:
    2021
    Wydawca:
    Biblioteka Wyższego Seminarium Duchownego Diecezji Koszalińsko-Kołobrzeskiej
    Tematy:
    Skrzatusz
    Pieta Skrzatuska
    komisja teologów
    cuda
    diecezja koszalińsko-kołobrzeska
    commission of theologians
    miracles
    Koszalin-Kolobrzeg (Kołobrzeg) Diocese
    Opis:
    Po utworzeniu diecezji koszalińsko-kołobrzeskiej w 1972 r. biskup Ignacy Jeż ogłosił Skrzatusz diecezjalnym sanktuarium. Wieloletnie starania biskupa i salezjańskich kustoszy doprowadziły do uroczystej koronacji figury Matki Bożej Bolesnej w 1988 r. W 25. rocznicę tego wydarzenia rozpoczęto wydawanie Rocznika Skrzatuskiego. Redakcja czasopisma postawiła sobie za cel propagowanie na szerszą skalę maryjnego sanktuarium. Pojawiają się w nim artykuły także o tematyce biblijnej i mariologicznej. Główny nurt jednak stanowią treści związane z samym sanktuarium i trwającym tam nieprzerwanie kultem Matki Bożej Bolesnej. Wydana niedawno transkrypcja manuskryptu ks. Andrzeja Józefa Delerdta umożliwiła szerokiemu gronu czytelników zapoznanie się z ciekawym źródłem z drugiej połowy XVIII w. Prezentowany, dotąd nieznany dokument, odsłania podstawę ogłoszenia Piety Skrzatuskiej jako cudownej przez biskupów poznańskich w drugiej połowie XVII w. Komisarze wysłani przez administratora diecezji, ks. Jana Braneckiego, przedstawili władzy duchownej dokument, w którym udowodnili, że to, co dzieje się w Skrzatuszu, ma podłoże działania Bożego. Autor w niniejszym artykule osadza dokument na tle sytuacji regionu w połowie XVII w. Kolejnym krokiem będzie wydanie tekstu dokumentu w języku oryginalnym z całym krytycznym aparatem.
    After the creation of the Koszalin-Kolobrzeg (Kołobrzeg) Diocese in 1972, Bishop Ignacy Jeż proclaimed Skrzatusz a diocesan sanctuary. Many years of efforts of the bishop and Salesian custodians led to the solemn coronation of the statue of Our Lady of Sorrows in 1988. On the 25th anniversary of this event, the publication of the Rocznik Skrzatuski began. The editorial board of the magazine set itself the goal of promoting the Marian sanctuary on a larger scale. There are also articles on biblical and Mariological topics. The mainstream, however, is the content related to the sanctuary itself and the uninterrupted cult of Our Lady of Sorrows there. A recently published transcript of the manuscript of Fr. Andrzej Józef Delerdt enabled a wide group of readers to get acquainted with an interesting source from the second half of the 18th century. The presented, so far unknown document reveals the basis for proclaiming Pieta Skrzatuska – as miraculous by the bishops of Poznan (Poznań) in the second half of the 17th century. Commissioners sent by the administrator of the diocese, Fr. Jan Branecki, presented the clerical authority with a document in which they proved that what was happening in Skrzatusz was based on God’s actions. In this article, the author places the document against the background of the region’s situation in the mid-17th century. The next step will be to publish the text of the document in the original language with the entire critical apparatus.
    Źródło:
    Rocznik Skrzatuski; 2021, 9; 79-92
    2300-8296
    Pojawia się w:
    Rocznik Skrzatuski
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of antiepileptic activity of methanolic leaves extract of Tragia involucrata Linn. in mice
    Autorzy:
    Varma, G.G.
    Mathai, B.K.
    Das, K.
    Gowda, G.
    Rammohan, S.
    Einstein, J.W.
    Powiązania:
    https://bibliotekanauki.pl/articles/11927.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    antiepileptic drug
    antiepileptic activity
    methanolic extract
    leaf
    plant extract
    Tragia involucrata
    Indian stinging nettle
    mice
    mouse
    anticonvulsant action
    pentylenetetrazol
    picrotoxin
    Opis:
    The present investigation was aimed to study an antiepileptic activity of methanolic extract of Tragia involucrata Linn in mice. In vivo screening models like maximal electroshock-induced convulsion (MES), pentylenetetrazole (PTZ) and picrotoxin (PTX) induced models are used to evaluate the antiepileptic effects of the extracts. The biochemical estimation was done by measuring the lipid peroxidation and reduced glutathione (GSH). In the MES induced convulsion, methanolic extract of Tragia involucrata (METI) at high dose (800 mg/kg body weight), showed high significant inhibition on tonic hind limb extension (THLE, 6.83 ±0.30***) and decrease in duration of stupor period (108.7 ±6.53***). In PTZ and PTX induced model METI (400 mg/kg and 800 mg/kg) showed significant delay on the onset of convulsions, decreased duration of convulsion and reduced mortality significantly. It also showed significant decrease in brain MDA level in lipid peroxidation profile, and increase in the brain glutathione levels in mice against PTZ induced convulsion. The results confirmed that Tragia involucrata Linn possesses dose dependent antiepileptic activity.
    Źródło:
    International Letters of Natural Sciences; 2014, 12, 2
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-34 z 34

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