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    Wyświetlanie 1-9 z 9
    Tytuł:
    The energy of sheet bending on a crank-type press
    Ehnergetika gibki listovogo metalla na krivoshipnom presse
    Autorzy:
    Abdulganiev, M.
    Ray, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/792514.pdf
    Data publikacji:
    2012
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    crank-type press
    power calculation
    working stroke
    deformation
    sheet bending
    energy
    analytical method
    Opis:
    The analytical method of power calculation of crank-type press working stroke is developed instead of graph analytical method. This analytical method allows substantially reducing working hours of calculation and promoting exactness of the results. Bending and coining are offered to execute separately. That will allow to make this processes more economically and to reduce depreciate charge.
    Разработанный аналитический метод энергетического расчета рабочего хода кривошипного пресса вместо графоаналитического позволяет существенно снизить трудоемкость расчета и повысить точность его результатов. Предложено свободную гибку и правку (чеканку) выполнять раздельно, что позволит экономичность процессов и снизить амортизационные отчисления.
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Completing a worksite health risk assessment correlates with continuing employment, lower health care costs and utilization
    Autorzy:
    Merrill, Ray M.
    Aldana, Steven G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085727.pdf
    Data publikacji:
    2022-08-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    employment
    behavior
    health care costs
    health risk assessment
    worksite wellness
    health perception
    Opis:
    ObjectivesCompanies that understand the collective health risks of their employees, as well as worker productivity as it relates to health risks can provide more effective and necessary interventions. Health Risk Assessments (HRAs) are an important source of information for understanding overall health risks of a company’s employees. However, HRA data tend to represent only a subset of employees, thereby providing employers an incomplete picture of employee health risks. The current study identifies the representativeness of those completing a worksite HRA by selected demographics, health care costs, and health risks in a large US company.Material and MethodsA retrospective analysis of employees in a large US company during 2017–2019, with statistically significant results reported, adjusted for sex, age, and year.ResultsThe percentage of employees completing the HRA increased from 23.9% in 2017 to 28.4% in 2018 to 32.3% in 2019. These employees were more likely women, middle aged, have lower health care costs, remain employed from year to year, and have better health behaviors and biometric scores. If all employees looked like employees completing the HRA, total medical costs would be 17% lower. If all employees looked like employees completing the HRA who had a health perception rating (1–10 [excellent]) of 7–8 (57.4%) or 9–10 (25.2%) vs. 1–6, total medical costs would be 21.9% and 25.6% lower, respectively.ConclusionsA minority of employees completed the worksite HRA. Basing overall employee health risks on the HRA underestimates health risks and can result in a poorly representative health intervention program.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2022, 35, 4; 449-457
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of sensitivity analysis for assessment of energy and environmental alternatives in the manufacture by using analytic hierarchy process
    Autorzy:
    Ghorbannezhad, P.
    Azizi, M.
    Ray, C.
    Yoo, C.
    Ramazani, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/207981.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    hierarchical systems
    analytic hierarchy process (AHP)
    AHP
    energy utilization
    environmental impact
    paper mill
    recycling
    water supply
    system hierarchiczny
    proces hierarchii analitycznej
    wykorzystanie energii
    wpływ na środowisko
    młyn papierniczy
    recykling
    wodociągi
    Opis:
    Multi-criteria decision making (MCDM) was used to make comparative analysis of projects or heterogeneous measures for prioritization criteria and subcriteria simultaneously in a complex situation. The aim of this paper is to determine the alternatives and the sensitivity of main factors affecting water and energy consumption as well as environmental impact in a recycled paper manufacturing by using analytic hierarchy process (AHP). The AHP enables one to consider all the elements of decision process in a model, and to compare criteria and subcriteria of the model to find the best alternative. The AHP technique is applied through specific software package with user-friendly interfaces called Expert Choice. The results indicated that reduction of water consumption is the most important alternative for sustainable development in a recycled paper mill in Iran. Also, good housekeeping is the most sensitive criterion affecting the alternatives. The paper illustrates how the AHP method can help industrial management to overcome the energy usage and environmental impact in the manufacture.
    Źródło:
    Environment Protection Engineering; 2013, 39, 3; 5-20
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of background noise in the GNSS position time series using spectral analysis – A case study of Nepal Himalaya
    Autorzy:
    Ray, Jagat Dwipendra
    Vijayan, M. Sithartha Muthu
    Godah, Walyeldeen
    Kumar, Ashok
    Powiązania:
    https://bibliotekanauki.pl/articles/145396.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    GNSS
    szereg czasowy
    analiza spektralna
    background noise
    position time series
    spectral analysis
    Opis:
    Position time series from permanent Global Navigation Satellite System (GNSS) stations are commonly used for estimating secular velocities of discrete points on the Earth’s surface. An understanding of background noise in the GNSS position time series is essential to obtain realistic estimates of velocity uncertainties. The current study focuses on the investigation of background noise in position time series obtained from thirteen permanent GNSS stations located in Nepal Himalaya using the spectral analysis method. The power spectrum of the GNSS position time series has been estimated using the Lomb–Scargle method. The iterative nonlinear Levenberg–Marquardt (LM) algorithm has been applied to estimate the spectral index of the power spectrum. The power spectrum can be described by white noise in the high frequency zone and power law noise in the lower frequency zone. The mean and the standard deviation of the estimated spectral indices are […] for north, east and vertical components, respectively. On average, the power law noise extends up to a period of ca. 21 days. For a shorter period, i.e. less than ca. 21 days, the spectra are white. The spectral index corresponding to random walk noise (ca. –2) is obtained for a site located above the base of a seismogenic zone which can be due to the combined effect of tectonic and nontectonic factors rather than a spurious monumental motion. Overall, the usefulness of investigating the background noise in the GNSS position time series is discussed.
    Źródło:
    Geodesy and Cartography; 2019, 68, 2; 375-388
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elevated strontium concentration in the blood of automobile workers in Kolkata
    Autorzy:
    Basu, R.
    Mukhopadhyay, A.
    Ray, S.S.
    Chakrabarti, P.
    Ram, S.S.
    Sudarshan, M.
    Chakrabarti, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1916666.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Strontium
    garage workers
    blood
    Energy Dispersive X-ray Fluorescence Technique
    Opis:
    Introduction: Though the trace element strontium’s (Sr) exact role in health remains unknown, at certain levels, it is toxic and, given the body’s low threshold for Sr, has been cited to cause nervous disorders. At different stages of the life cycle, organisms vary in their ability to discriminate Sr and calcium, which can cause age-related differences in gastrointestinal absorption. Though data regarding the effects of such absorption remain limited, it can reportedly impact health, the immune system, and chromosomal aberration. Purpose: To investigate and correlate levels of Sr concentration and any health problems at certain levels among automobile workers. Materials and methods: The blood of 41 automobile workers and 26 healthy controls of the Kolkata region was collected and whole blood Sr concentration estimated by the energy dispersive X-ray fluorescence (EDXRF) technique. Results: Automobile workers showed significantly (p <0.001) higher blood SR levels than controls from the same area, despite similar dietary habits and drinking-water quality. Conclusions: Automobile workers are exposed to different pollutants that can harm their health, and a trace element imbalance of Sr and its elevated concentrations in the blood may cause different health complications.
    Źródło:
    Progress in Health Sciences; 2014, 4, 2; 186-189
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of putative miRNAs from expressed sequence tags of Gnetum gnemon L. and their cross-kingdom targets
    Autorzy:
    Krishnatreya, D.B.
    Ray, D.
    Baruah, P.M.
    Dowarah, B.
    Bardoloi, K.S.
    Agarwal, H.
    Agarwala, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096394.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microRNAs
    expressed sequence tags
    cross-kingdom
    Gnetum gnemon
    Opis:
    Wild edible plants are often found to be rich sources of nutrients and medicinally beneficial compounds with pharmacological activities. Gnetum gnemon is a nutritionally important plant and a popular food source in parts of Assam and North-East India. Various microRNAs (miRNAs) have been recently identified in many plants; however, there are no records of identification of miRNAs in any species of Gnetum. The prediction of miRNA-target associations in G. gnemon is an important step to facilitate functional genomics studies in this species. In the present study, all known miRNAs from plants available in public domain were used to search for the conserved G. gnemon miRNA homologues in publicly accessible expressed sequence tags (ESTs) in NCBI database. An aggregate of 20 new potential miRNAs belonging to two diverse miRNA families (miR399 and miR5021) were identified through a homology-based search by following stringent filtering criteria. To investigate the potential cross-kingdom effects of the identified miRNAs, we further identified the putative target genes of G. gnemon miRNAs in human transcriptome and analyzed them against the NCBI non-redundant protein database. The KEGG analysis of the target genes indicated that these genes were involved in different metabolic pathways such as caffeine metabolism, drug metabolism, and nitrotoluene degradation. The target genes of G. gnemon miRNAs in humans were found to be associated with various disorders of both hereditary and non-hereditary origin. These results could help to shed new light on understanding of miRNA-mRNAs functional networks in this species and its potential use as a small RNA-based therapy against some human diseases.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 2; 179-195
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applicability of artificial intelligence in smart healthcare systems for automatic detection of Parkinson’s Disease
    Autorzy:
    Pallathadka, Harikumar
    Padminivalli V., S.J.R.K.
    Vasavi, M.
    Nancy, P.
    Naved, Mohd
    Kumar, Harish
    Ray, Samrat
    Powiązania:
    https://bibliotekanauki.pl/articles/38709253.pdf
    Data publikacji:
    2024
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    Parkinson’s disease
    detection
    machine learning
    relief algorithm
    LDA algorithm
    SVM-RBF
    accuracy
    sensitivity
    specificity
    choroba Parkinsona
    wykrywanie
    nauczanie maszynowe
    algorytm ulgi
    Algorytm LDA
    dokładność
    wrażliwość
    specyficzność
    Opis:
    Parkinson’s disease is associated with memory loss, anxiety, and depression in the brain. Problems such as poor balance and difficulty during walking can be observed in addition to symptoms of impaired posture and rigidity. The field dedicated to making computers capable of learning autonomously, without having to be explicitly programmed, is known as machine learning. An approach to the diagnosis of Parkinson’s disease, which is based on artificial intelligence, is discussed in this article. The input for this system is provided through photographic examples of Parkinson’s disease patient handwriting. Received photos are preprocessed using the relief feature option to begin the process. This is helpful in the process of selecting characteristics for the identification of Parkinson’s disease. After that, the linear discriminant analysis (LDA) algorithm is employed to reduce the dimensions, bringing down the total number of dimensions that are present in the input data. The photos are then classified via radial basis function-support vector machine (SVM-RBF), k-nearest neighbors (KNN), and naive Bayes algorithms, respectively.
    Źródło:
    Computer Assisted Methods in Engineering and Science; 2024, 31, 2; 175-185
    2299-3649
    Pojawia się w:
    Computer Assisted Methods in Engineering and Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of different drying treatments on the physicochemical, functional, and antioxidant properties of Bacopa monnieri
    Autorzy:
    Padhiari, B.M.
    Ray, A.
    Jena, S.
    Champati, B.B.
    Sahoo, A.
    Halder, T.
    Ghosh, B.
    Panda, P.C.
    Nayak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096812.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bacopa monnieri (L.) Wettst
    bacoside A
    bacopaside I
    drying treatments
    DPPH assay
    HPLC
    FT-IR
    Opis:
    Bacopa monnieri (L.) Wettst is a very high-value medicinal plant that is commonly used for improving cognitive functions. However, the availability of very limited information on the drying method of B. monnieri has prompted to optimize a suitable drying method. The present study therefore aimed to evaluate the influence of the following six drying treatments on the quality of B. monnieri sample: microwave drying at 300 W and 600 W, hot air-drying at 50EC and 70EC, solar drying, and freeze-drying (FD). The quality attributes of the dried samples were comparatively analyzed in terms of color, total color difference, moisture content, water activity (a w), antioxidant activity, and bacoside A and bacopaside I content. The results of this study showed significant differences (P < 0.05) among the different drying methods in International Commission on Illumination (CIE) parameters, namely lightness index (L*), red-green index (a*), and yellow-blue index (b*), ΔE and a w values. Among the samples dried with the six drying methods, freeze-dried B. monnieri samples had an attractive color with the lowest total color difference value (11.415%), a w value (0.15%), and maximum bacoside A (3.389%) and bacopaside I (0.620%) content. Moreover, Fourier transform infrared spectroscopy (FT-IR) analysis showed no major difference in the functional groups in B. monnieri samples processed by the different drying methods. Considering the retention of quality after drying, FD was found to be very effective for future large-scale production of good quality dried B. monnieri products.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 4; 399-409
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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