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    Wyświetlanie 1-14 z 14
    Tytuł:
    Jamun Seed: A Review on Bioactive Constituents, Nutritional Value and Health Benefits
    Autorzy:
    Tak, Yamini
    Kaur, Manpreet
    Jain, Mool C.
    Samota, Mahesh Kumar
    Meena, Nirmal Kumar
    Kaur, Gurpreet
    Kumar, Rajendra
    Sharma, Daisy
    Lorenzo, José M.
    Amarowicz, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/2159284.pdf
    Data publikacji:
    2022-09-05
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    jamun seeds
    nutrients
    bioactives
    extraction and purification
    nutraceuticals
    Opis:
    Jamun fruit, a member of the Myrtaceae family, is commercially grown in tropical and subtropical areas of the world for its fruits with sweet, sour, and astringent luscious flesh. Seeds of jamun fruits are discarded as trash during the industrial processing of fruit pulp into beverages, jellies, jam, vinegar, wine, and squash. These seeds are a potential source of bioactive compounds including hydrolysable tannins, phenolic acids, flavonoids, other phenolics, terpenoids, phloroglucinol derivatives and saponins, which have been endorsed several biological activities, such as antidiabetic, anticancer, anti-inflammatory, antioxidant, antimicrobial, antihyperlipidemic and antihypercholesterolemic, as well as cardioprotective, hepatoprotective and neuroprotective properties. High contents of carbohydrates, dietary fiber, minerals, and ascorbic acid have also been found in jamun seeds. However, potential utilization of these seeds as innovative implements for health benefits has not yet been fully understood. We aim to compile scientific research and recent advances on jamun seed nutritional profile, bioactive compounds composition, bioactive properties, and their potential as an ingredient in functional food formulation.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2022, 72, 3; 211-228
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Passerine birds supporting cross pollination in Erythrina stricta Roxb.
    Autorzy:
    Khanduri, V.P.
    Kumar, K.S.
    Sharma, C.M.
    Riyal, M.K.
    Kar, K.
    Singh, B.
    Sukumaran, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078260.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Ornithophily
    pollination
    mating system
    geitonogamy
    pollen grains
    Opis:
    Erythina stricta is an ecologically important tree species in the rainforests of India and its nectar within the flowers contributes to birds’ diet and survival. Reports on the pollination of this species have not been published so far. We therefore explore the reproductive system of this tree species which has great significance to its ecosystem. Birds have an important role in the reproduction of trees through pollination particularly in tropical areas where reproductive success mostly depends on animal pollinator interactions. Study of visitation and nectar feeding behaviour of birds alongwith breeding system assessment of Erythina stricta. Birds visiting and foraging behaviour was observed during Erythrina stricta flowering season in an indian tropical rainforest. Reproductive system was assessed through controlled pollination experiments. Thirteen bird species were recorded visiting and foraging nectar from the flowers of Erythrina stricta. The maximum numbers of visits recorded were from the Red-vented Bulbul (Pycnonotus cafer, Pycnonotidae). The nectar feeding birds were, either (i) potential pollinator with long bills (e.g. Pycnonotus spp., Chloropsis aurifrons, and Dicrurus spp.) or (ii) nectar robbers with comparatively shorter bills (e.g. Zosterops palpebrosa, Stachyris ruficeps, Macronous gularis, Heterophasia glaciris). Controlled pollination experiments revealed high degree of cross pollination (xenogamy) and self-incompatibility in E. stricta. Birds were more frequent in early mornings and their foraging activity was also observed during evening hours; the frequency however, declined with respect to nectar availability. Long corolla tubes of E. stricta could restrict access to nectar collecting bees
    Źródło:
    Dendrobiology; 2021, 85; 117-126
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comprehensive review of renewable energy production from biomass-derived bio-oil
    Autorzy:
    Sharma, M.
    Singh, J.
    Baskar, C.
    Kumar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/80718.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    renewable energy
    biomass
    bio-oil
    bioenergy
    biomass source
    fast pyrolysis
    hydrothermal liquefaction
    climate change
    energy security
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computational Analysis of Screening Unit of Paper Plant with Human Error Using Neural Network Approach
    Autorzy:
    Sharma, Neelam
    Gupta, Ritu
    Batra, C. M.
    Ekata, Ekata
    Powiązania:
    https://bibliotekanauki.pl/articles/1159859.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Neural Network
    cost factor
    neural weights
    non-reliability
    reliability
    Opis:
    Recent approach of Neural Network can be applied to solve a wide range of optimization problems. This paper deals with reliability, non-reliability and profit analysis of a paper plant. The objective of this paper is to compute profit of paper plant using neural network Algorithm and to analyze the availability of the system. The system is divided into four main subsystems. A multi-layered neural network model is used in order to optimize the maintenance of the paper plant system. The system may fail due to hardware failure with human errors and various environmental conditions. All types of failures, repairs and waiting rates are exponential. System state probabilities and other parameters are developed for the proposed model using neural network approach. Numerical examples are included to demonstrate the results.
    Źródło:
    World Scientific News; 2018, 113; 226-237
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Method to Produce Linearly Polarized Positrons and Positronium Atoms with the J-PET Detector
    Autorzy:
    Mohammed, Muhsin
    Białas, P.
    Curceanu, C.
    Czerwiński, E.
    Dulski, K.
    Gajos, A.
    Głowacz, B.
    Gorgol, M.
    Hiesmayr, B.
    Jasińska, B.
    Kisielewska, D.
    Korcyl, G.
    Kowalski, P.
    Kozik, T.
    Krawczyk, N.
    Krzemień, W.
    Kubicz, E.
    Pawlik-Niedźwiecka, M.
    Niedźwiecki, S.
    Pałka, M.
    Raczyński, L.
    Raj, J.
    Rudy, Z.
    Sharma, N.
    Sharma, S.
    Shivani, ---
    Skurzok, M.
    Silarski, M.
    Wieczorek, A.
    Wiślicki, W.
    Zgardzińska, B.
    Zieliński, M.
    Moskal, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030045.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    41.75.Fr
    41.75.Ht
    77.22.Ej
    36.10.Dr
    85.75.Mm
    87.57.uk
    Opis:
    A method for creating linearly polarized positrons and ortho-positronium (o-Ps) atoms with the J-PET detector is presented. The unique geometry and properties of the J-PET tomography enable one to design a positron source such that the quantization axis for the estimation of the linear polarization of produced o-Ps can be determined on the event by event basis in a direction of the positron motion. We intend to use ²²Na or other β⁺ decay isotopes as a source of polarized positrons. Due to the parity violation in the beta decay, the emitted positrons are longitudinally polarized. The choice of the quantization axis is based on the known position of the positron emitter and the reconstructed position of the positronium annihilation. We show that the J-PET tomography is equipped with all needed components.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1486-1489
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis Procedure of the Positronium Lifetime Spectra for the J-PET Detector
    Autorzy:
    Dulski, K.
    Zgardzińska, B.
    Białas, P.
    Curceanu, C.
    Czerwiński, E.
    Gajos, A.
    Głowacz, B.
    Gorgol, M.
    Hiesmayr, B.
    Jasińska, B.
    Kisielewska-Kamińska, D.
    Korcyl, G.
    Kowalski, P.
    Kozik, T.
    Krawczyk, N.
    Krzemień, W.
    Kubicz, E.
    Mohammed, Muhsin
    Pawlik-Niedźwiecka, M.
    Niedźwiecki, S.
    Pałka, M.
    Raczyński, L.
    Raj, J.
    Rudy, Z.
    Sharma, N.
    Sharma, S.
    Shivani, Shivani
    Shopa, R.
    Silarski, M.
    Skurzok, M.
    Wieczorek, A.
    Wiślicki, W.
    Zieliński, M.
    Moskal, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033298.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.05.Kf
    13.30.Ce
    14.60.-z
    78.47.-p
    Opis:
    Positron annihilation lifetime spectroscopy has shown to be a powerful tool to study the nanostructures of porous materials. Positron emission tomograph is a device allowing imaging of metabolic processes e.g. in human bodies. A newly developed device, the Jagiellonian PET will allow positron annihilation lifetime spectroscopy in addition to imaging, thus combining both analyses providing new methods for physics and medicine. In this contribution we present a computer program that is compatible with the Jagiellonian PET software. We compare its performance with the standard program LT 9.0 by using positron annihilation lifetime spectroscopy data from hexane measurements at different temperatures. Our program is based on an iterative procedure, and our fits prove that it performs as good as LT 9.0.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1637-1640
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Human tissue investigations using PALS technique - free radicals influence
    Autorzy:
    Jasińska, B.
    Zgardzińska, B.
    Chołubek, G.
    Pietrow, M.
    Gorgol, M.
    Wiktor, K.
    Wysogląd, K.
    Białas, P.
    Curceanu, C.
    Czerwiński, E.
    Dulski, K.
    Gajos, A.
    Głowacz, B.
    Hiesmayr, B.
    Jodłowska-Jędrych, B.
    Kamińska, D.
    Korcyl, G.
    Kowalski, P.
    Kozik, T.
    Krawczyk, N.
    Krzemień, W.
    Kubicz, E.
    Mohammed, Muhsin
    Pawlik-Niedźwiecka, M.
    Niedźwiecki, S.
    Pałka, M.
    Raczyński, L.
    Rudy, Z.
    Sharma, N.
    Sharma, S.
    Shopa, R.
    Silarski, M.
    Skurzok, M.
    Wieczorek, A.
    Wiktor, H.
    Wiślicki, W.
    Zieliński, M.
    Moskal, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1057941.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    positron annihilation
    positronium
    free radicals
    tissues
    uterine leiomyomas
    Opis:
    The positron annihilation lifetime spectroscopy was applied to the samples of the human uterine leiomyomas and the normal myometrium tissues taken from the selected place of the uterus during a surgery. The method indicated differences in values of the measured positron annihilation lifetime spectroscopy parameters (lifetimes and intensities) between healthy and diseased tissue samples. The additional measurements were performed either in darkness or in presence of visible light which influenced the free radicals present in both kind of tissues and, as a result, made changes in free annihilation and o-Ps decay lifetime and intensity values.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1556-1558
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary studies of J-PET detector spatial resolution
    Autorzy:
    Pawlik-Niedźwiecka, M.
    Niedźwiecki, S.
    Alfs, D.
    Białas, P.
    Curceanu, C.
    Czerwiński, E.
    Dulski, K.
    Gajos, A.
    Głowacz, B.
    Gorgol, M.
    Hiesmayr, B.
    Jasińska, B.
    Kisielewska, D.
    Korcyl, G.
    Kowalski, P.
    Kozik, T.
    Krawczyk, N.
    Krzemień, W.
    Kubicz, E.
    Mohammed, M.
    Pałka, M.
    Raczyński, L.
    Raj, J.
    Rudy, Z.
    Shivani, -
    Silarski, M.
    Skurzok, M.
    Sharma, N.
    Sharma, S.
    Shopa, R.
    Strzelecki, A.
    Wieczorek, A.
    Wiślicki, W.
    Zgardzińska, B.
    Zieliński, M.
    Moskal, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1057928.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    29.40.Mc
    87.57.uk
    87.10.Rt
    34.50.-s
    Opis:
    The J-PET detector, based on long plastic scintillator strips, was recently constructed at the Jagiellonian University. It consists of 192 modules axially arranged into three layers, read out from both sides by digital constant-threshold front-end electronics. This work presents preliminary results of measurements of the spatial resolution of the J-PET tomograph performed with ²²Na source placed at selected position inside the detector chamber.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1645-1648
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time Calibration of the J-PET Detector
    Autorzy:
    Skurzok, M.
    Silarski, M.
    Alfs, D.
    Białas, P.
    Shivani, S.
    Curceanu, C.
    Czerwiński, E.
    Dulski, K.
    Gajos, A.
    Głowacz, B.
    Gorgol, M.
    Hiesmayr, B.
    Jasińska, B.
    Kisielewska-Kamińska, D.
    Korcyl, G.
    Kowalski, P.
    Kozik, T.
    Krawczyk, N.
    Krzemień, W.
    Kubicz, E.
    Mohammed, Muhsin
    Pawlik-Niedźwiecka, M.
    Niedźwiecki, S.
    Pałka, M.
    Raczyński, L.
    Raj, J.
    Rudy, Z.
    Sharma, N.
    Sharma, S.
    Shopa, R.
    Wieczorek, A.
    Wiślicki, W.
    Zgardzińska, B.
    Zieliński, M.
    Moskal, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033283.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    06.20.fb
    36.10.Dr
    11.30.Er
    24.80.+y
    Opis:
    The Jagiellonian positron emission tomograph project carried out in the Institute of Physics of the Jagiellonian University is focused on construction and tests of the first prototype of PET scanner for medical diagnostic which allows for the simultaneous 3D imaging of the whole human body using organic scintillators. The J-PET prototype consists of 192 scintillator strips forming three cylindrical layers which are optimized for the detection of photons from the electron-positron annihilation with high time-and high angular resolutions. In this article we present time calibration and synchronization of the whole J-PET detection system by irradiating each single detection module with a ²²Na source and a small detector providing common reference time for synchronization of all the modules.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1641-1644
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    STM Study on the (100) Surface of the Ag-In-Yb 1/1 Cubic Approximant
    Autorzy:
    Cui, C.
    Sharma, H.
    Nugent, P.
    Shimoda, M.
    Pang Tsai, An
    Powiązania:
    https://bibliotekanauki.pl/articles/1373497.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.44.Br
    68.35.B-
    68.37.Ef
    Opis:
    Scanning tunneling microscopy studies have revealed a periodic step-terrace structure in the (100) surface of the Ag-In-Yb 1/1 cubic approximant. The step height between the large terraces is about 0.73 nm, approximately one-half of the lattice constant, which is consistent with the bcc-like crystalline structure of this crystal. Two small terraces are observed between the adjacent large terraces. High-resolution STM images of the large terrace exhibit a square lattice of protrusions with a lattice constant of about 1.55 nm, which is consistent with the bulk lattice constant. The scanning tunneling microscopy results suggest that the large terraces are associated with the planes that intersect the centers of rhombic triacontrahedral clusters (the building unit of the crystal) and show the highest atomic density along the [100] axis. It is highly likely that the small terraces are related to moderate atomic density planes and are less stable than the large terraces.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 2; 577-580
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Challenges and opportunities for the future of icampuses
    Autorzy:
    Thomas, A. M.
    Shah, H.
    Moore, P.
    Evans, C.
    Sharma, M.
    Pham, H. V.
    Osman, K.
    Wilcox, A. J.
    Rayson, P.
    Chapman, C.
    Chima, P.
    Athwal, C.
    While, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/952933.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    education
    icampus
    sensors
    context
    Web 2.0
    Opis:
    Meeting the educational needs of students currently requires moving toward collaborative electronic and mobile learning systems that parallel the vision of Web 2.0. However, factors such as data freedom, brokerage, interconnectivity and the Internet of Things add to a vision for Web 3.0 that will require consideration in the development of future campus-based, distance and vocational study. So, education can, in future, be expected to require deeper technological connections between students and learning environments, based on significant use of sensors, mobile devices, cloud computing and rich-media visualization. Therefore, we discuss challenges associated with such a futuristic campus context, including how learning materials and environments may be enriched by it. As an additional novel element the potential for much of that enrichment to be realized through development by students, within the curriculum, is also considered. We will conclude that much of the technology required to embrace the vision of Web 3.0 in education already exists, but that further research in key areas is required for the concept to achieve its full potential.
    Źródło:
    Computer Science; 2013, 14 (1); 5-25
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of Pulsed Current-Voltage Characteristics of AlGaN/GaN HEMTs from Room Temperature to~15~K
    Autorzy:
    Laurent, T.
    Sharma, R.
    Torres, J.
    Nouvel, P.
    Blin, S.
    Palermo, C.
    Varani, L.
    Cordier, Y.
    Chmielowska, M.
    Faurie,, J.
    Beaumont, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1505650.pdf
    Data publikacji:
    2011-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    72.80.Ey
    73.21.Fg
    73.40.-c
    Opis:
    We report measurements of the pulsed and dc current-voltage characteristics of AlGaN/GaN high-electron-mobility transistors as functions of geometry, temperature (from 300 down to 15 K), and operating conditions. An increase in the drain current with shortening of the pulse width from 1 μs to 400 ns is found to be significant at room temperature whilst this behavior is inverted or even removed at 77 and 15 K temperatures.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 2; 196-198
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Voltage Controlled Terahertz Transmission Enhancement through GaN Quantum Wells
    Autorzy:
    Laurent, T.
    Sharma, R.
    Torres, J.
    Nouvel, P.
    Blin, S.
    Chusseau, L.
    Palermo, C.
    Varani, L.
    Cordier, Y.
    Chmielowska, M.
    Faurie, J.
    Beaumont, B.
    Shiktorov, P.
    Starikov, E.
    Gruzinskis, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1505459.pdf
    Data publikacji:
    2011-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.-e
    78.67.De
    73.21.Fg
    Opis:
    We report transmission measurements of GaN quantum well grown on sapphire substrate in the 220-325 GHz frequency band at low temperatures. A significant enhancement of the transmitted beam intensity with the applied voltage on the devices under test is found.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 2; 107-110
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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