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    Wyświetlanie 1-33 z 33
    Tytuł:
    The Etymology of Latin nimbus (and its Iranian Cognates)
    L‘étymologie du latin nimbus (et ses cognacs iraniens)
    Autorzy:
    Cohen, Paul S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1041409.pdf
    Data publikacji:
    2020-12-18
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Latin nimbus
    Iranien *nambV-
    réduplication
    instrument
    Iranian *nambV-
    reduplication
    Opis:
    After a brief review of prior etymological attempts found in the literature, a complete, rule-governed etymology of Latin nimbus ‘rain cloud, sudden downpour, etc.’ – including a precise explanation of the medial nasal – is propounded. It is based on the Indo-European reduplication process that produces nouns, as delineated by Cohen (2014; 2015; 2017), and on Latin sound laws given and exemplified by Weiss (2009).
    Aprés une récapitulation brève des essais étymologiques antécédents, qui sont trouvés dans la littérature, une étymologie de latin nimbus ‘nuage de pluie, forte averse soudaine, etc’ complète et d’accord avec règle – en comprenant une explication précise de la nasale médiale – est proposée. Elle est basée sur le processus indo-européen de réduplication qui genère les noms, comme décrit par Cohen (2014; 2015; 2017), et sur des lois phonologiques latines donneés et exemplifiés par Weiss (2009).
    Źródło:
    Collectanea Philologica; 2020, 23; 5-8
    1733-0319
    2353-0901
    Pojawia się w:
    Collectanea Philologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indices and their applicability under high temperature in potato (Solanum tuberosum L.) cultivars
    Autorzy:
    Paul, S.
    Gogoi, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/11453.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    The increasing temperature is going to be more vulnerable for cool season crops like potato which requires an optimum productivity temperature of 18 to 20 °C. Thus, breeding for heat tolerance has become very important. Therefore, some previously used indices for abiotic stress tolerance have been used in our study for screening of high temperature stress tolerance in potato. Three high yielding (Kufri jyoti, Kufri megha and Kufri pokraj) and two local (Rangpuria and Badami) commonly grown potato cultivars were selected for our experiment. Potato cultivars were sown under normal condition and two high temperature conditions (polyhouse and early season) and indices such as HSI (heat susceptibility index), HTI (heat tolerance index), GM (geometric mean) and HII (heat intensity index) were used to evaluate the performance of the cultivars under all the three temperature conditions. The positive and significant correlation between HTI (heat tolerance index), and GM (geometric mean) as well as with tuber yield under all the conditions revealed that these indices were efficient in selecting the high temperature tolerant potato cultivars. We recorded the equal applicability of these two indices for both high yielding and local group of potato cultivars. Our study revealed that cultivar Kufri megha and Rangpuria showed higher heat tolerance between high yielding and local cultivars respectively.
    Źródło:
    International Letters of Natural Sciences; 2015, 43
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The list Distinguishing Number Equals the Distinguishing Number for Interval Graphs
    Autorzy:
    Immel, Poppy
    Wenger, Paul S.
    Powiązania:
    https://bibliotekanauki.pl/articles/31342143.pdf
    Data publikacji:
    2017-02-01
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    distinguishing
    distinguishing number
    list distinguishing
    interval graph
    Opis:
    A distinguishing coloring of a graph G is a coloring of the vertices so that every nontrivial automorphism of G maps some vertex to a vertex with a different color. The distinguishing number of G is the minimum k such that G has a distinguishing coloring where each vertex is assigned a color from {1, . . ., k}. A list assignment to G is an assignment L = {L(v)}v∈V (G) of lists of colors to the vertices of G. A distinguishing L-coloring of G is a distinguishing coloring of G where the color of each vertex v comes from L(v). The list distinguishing number of G is the minimum k such that every list assignment to G in which |L(v)| = k for all v ∈ V (G) yields a distinguishing L-coloring of G. We prove that if G is an interval graph, then its distinguishing number and list distinguishing number are equal.
    Źródło:
    Discussiones Mathematicae Graph Theory; 2017, 37, 1; 165-174
    2083-5892
    Pojawia się w:
    Discussiones Mathematicae Graph Theory
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Green Function Estimation of Correction to Vegards Law for isovalent Substitutional Defects in Alkali Halide Crystals
    Autorzy:
    Datta Roy (Paul), S.
    Das, S. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2013286.pdf
    Data publikacji:
    2000-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Bb
    61.82.Bg
    Opis:
    A Green function method is developed for estimation of lattice parameter r(χ) of an AX-BX solid solution over entire composition range (χ=0 to 1). The r(χ) obtained in the present method is different from the value r$\text{}_{V}$(χ) suggested by Vegard's law. We estimated the deviation from Vegard's law, r(χ)-r$\text{}_{V}$(χ), over entire composition range for isovalent substitutional defect in alkali halide crystals. When compared to X-ray diffraction measurements, we find that the deviation is in correct direction, variation of r(χ) with χ is consistent with experiment and the overall agreement is fairly good considering the accuracy of the experiment.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 4; 671-679
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of Lattice Relaxation in Some Substitutional Alloys Using a Green Function
    Autorzy:
    Das, S. K.
    Datta Roy (Paul), S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1995663.pdf
    Data publikacji:
    1999-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.72.Bb
    61.82.Bg
    Opis:
    In this paper we calculate nearest neighbour relaxation in some dilute substitutional alloys using a lattice static Green function and the Morse potential function. Distant neighbour relaxation is calculated by invoking a continuum approximation. The potential parameters for the unlike interactions are calculated using simple interpolation formulae. Using the above relaxation, we calculate volume changes in the above alloys. It is observed that the simple model predicts values which are in reasonably good agreement with the experimental values in all cases. The calculated values are also compared with those obtained from the Vegard law. For Au-Ag alloy, our model reproduces both the correct sign and the magnitude of the volume change, whereas the Vegard law cannot even give the sign of the volume change. This shows the inherent strength of the present model.
    Źródło:
    Acta Physica Polonica A; 1999, 95, 3; 359-366
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonlinear Ion-Acoustic Waves in Gravitating Dusty Plasma with Non-Isothermal Electrons and Fluctuating Dust Charges
    Autorzy:
    Paul, S.
    Pakira, G.
    Paul, B.
    Ghosh, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1419744.pdf
    Data publikacji:
    2012-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.27.Lw
    52.35.Fp
    04.40.-b
    Opis:
    Using the reductive perturbation method a theoretical infrastructure has been developed to study the nonlinear propagation of ion-acoustic waves in self-gravitating multicomponent dusty plasma consisting of positive ions, non-isothermal electrons and negatively charged warm dust particles with fluctuating dust charges and drifting motion. It is shown that instead of coupled nonlinear equations as obtained by earlier authors the nonlinear propagation of ion-acoustic waves in such a plasma can be described by an uncoupled third order partial differential equation which is a modified form of the Korteweg-de Vries equation. From this equation, quasi-soliton solution is obtained for the ion-acoustic wave. The effects of non-isothermal electrons, gravity, dust charge fluctuations and drifting motion on the ion-acoustic solitary waves are discussed with application in astrophysical contexts. The importance of the model considered here has also been pointed out.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 1; 116-121
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biological synthesis and characterization of titanium dioxide nanoparticle from Cynodon dactylon
    Autorzy:
    Renitta, R. E.
    Jebaseeli, T. J.
    Dhanaraj, A.
    Paul, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2201037.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    nanoparticle
    Cynodon dactylon
    FTIR
    SEM
    XRD
    titanium dioxide
    biological synthesis
    nanocząstka
    Cynodon palczasty
    spektroskopia w podczerwieni z transformacją Fouriera
    skaningowa mikroskopia elektronowa
    dyfrakcja rentgenowska
    dwutlenek tytanu
    biosynteza
    Opis:
    Purpose: There are several advantages of using a biological technique to produce nanoparticles versus a chemical method. The primary goal of this work is to characterize and biologically synthesize titanium dioxide (TiO2) nanoparticles from Cynodon dactylon. The characterization has experimented with UV-Vis Spectroscopy, EDX analysis, SEM, XRD, and FTIR. Design/methodology/approach: The suggested study uses a simple biological technique to accomplish the systematic biological synthesis of TiO2 nanoparticles utilizing Cynodon dactylon plant extract and titanium tetra isopropoxide as a precursor. UV-Vis spectroscopy, Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD) are used to confirm the fabrication of the TiO2 nanoparticles. The plant extract as well as titanium-based nanoparticles of the herb, Cynodon dactylon will be tested for its antibacterial activity against human pathogens. This eco-friendly technique for nanoparticle synthesis is straightforward and adaptable to major commercial manufacturing and technological applications. Findings: Cynodon dactylon biosynthesis of TiO2 nanoparticles is efficient, nutrition dependent, does not employ hazardous compounds, and happens at neutral pH levels. The antibacterial study results show that TiO2 nanoparticles synthesized using Cynodon dactylon have good antibacterial properties. TiO2 nanoparticle method of action against bacteria is unknown. This is an alternative process for synthesising TiO2 nanoparticles, apart from other chemical protocols, since this is quick and non-toxic. The antimicrobial property of biologically synthesized TiO2 nanoparticles against Escherichia coli, Staphylococcus aureus, and Acinetobacter baumannii was tested at four different doses of 15 μl/mg, 25 μl/mg, 50 μl/mg, and 75 μl/mg. The present results revealed the 75 μl/mg concentration got the highest zone of inhibition (15, 13, 15 mm) for Acinetobacter baumannii, Staphylococcus aureus, and Escherichia coli. Research limitations/implications: Many nanoparticles smaller than 100 nm are firmly agglomerated with each other in the study. TiO2 nanoparticles absorb in the UV region of 200 to 400 nm. XRD measurements confirmed the presence of TiO2 nanoparticles in the biologically produced sample. In our work, EDX was used to confirm the existence of Ti after its synthesis by Cynodon dactylon. Practical implications: The biosynthesized TiO2 nanoparticles utilizing Cynodon dactylon plant extracts exhibit a good potent antibacterial activity. The proposed results showed that the TiO2 nanoparticles are well suited for biomedical applications. Originality/value: The suggested research identifies several eco-friendly, biological, and cost-effective procedures for manufacturing nano-coated herbal products. The agar well diffusion technique was used to assess antibacterial activities toward test pathogens such as Acinetobacter baumannii, Staphylococcus aureus, and Escherichia coli.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2022, 113, 1; 31--41
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring of tool vibration for magnetorheological fluid controlled bar during turning of hardened AISI4340 steel
    Monitorowanie wibracji narzędzia w czasie toczenia na twardo stali AISI4340 przy użyciu tłumika ze sterowanym płynem o właściwościach magnetoreologicznych
    Autorzy:
    Paul, P. S.
    Jazeel, M.
    Varadarajan, A. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/139617.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hard turning
    tool vibration
    magnetorheological (MR) damper
    tool condition monitoring
    acoustic emission
    skewness
    kurtosis
    toczenie na twardo
    drgania narzędzia
    tłumik magnetoreologiczny (MR)
    monitorowanie stanu narzędzia
    emisja akustyczna
    skośność
    kurtoza
    Opis:
    In recent times, the concept of hard turning has gained awareness in metal cutting as it can apparently replace the traditional process cycle of turning, heat treating, and finish grinding for assembly of hard, wear-resistant steel parts. The major apprehension in hard turning is the tool vibration, which affects the surface finish of the work piece, has to be controlled and monitored. In order to control tool vibration in metal cutting, a magnetorheological fluid damper which has received great attention in suppressing tool vibration was developed and used. Also an attempt has been made in this study to monitor tool vibration using the skewness and kurtosis parameters of acoustic emission (AE) signal for the tool holder with and without magnetorheological damper. Cutting experiments were conducted to arrive at a set of operating parameters that can offer better damping characteristics to minimize tool vibration during turning of AISI4340 steel of 46 HRC using hard metal insert with sculptured rake face. From the results, it was observed that the presence of magnetorheological damper during hard turning reduces tool vibration and there exist a strong relationship between tool vibration and acoustic emission (AERMS) signals to monitor tool condition. This work provides momentous understanding on the usage of magnetorheological damper and AE sensor to control and monitor the tool condition during turning of hardened AISI4340 steel.
    W ostatnich latach, w obróbce skrawaniem wzrasta zainteresowanie koncepcją toczenia na twardo, ponieważ może ono zastąpić tradycyjny proces toczenia, utwardzania i szlifowania stosowany przy wykonywaniu twardych, odpornych na zużycie cześci metalowych. Głównym problemem przy twardym toczeniu są wibracje narzędzia, które muszą być monitorowane i kontrolowane, gdyż wpływają na wykończenie powierzchni elementu obrabianego. W celu kontrolowania wibracji narzędzia przy obróbce skrawaniem autorzy zastosowali tłumik z płynem o właściwościach reologicznych sterowanych polem magnetycznym. Podjęto także próbę monitorowania wibracji na podstawie parametrów skośności i kurtozy sygnałów akustycznych (AE) emitowanych przez uchwyt narzędzia, mierzonych w warunkach bez tłumika i z tłumikiem magnetoreologicznym. Przeprowadzono szereg eksperymentów z toczeniem stali AISI4340 o twardości 46 HRC przy użyciu narzędzia z płytką z twardej stali, o geometrycznie kształtowanym ostrzu, firmy Taegu Tec. Otrzymano zbiór parametrów roboczych, wyznaczając na ich podstawie lepsze charakterystyki tłumienia i osiagając minimalizację wibracji narzędzia. Wyniki eksperymentów wskazują, że obecność tłumika magnetoreologicznego redukuje wibracje i że istnieje silna zależność miedzy wibracjami narzędzia i wartością skuteczną sygnału emisji akustycznych (AERMS). Praca przyczynia się do znacznie lepszego zrozumienia funkcji tłumika magnetoreologicznego i czujnika emisji akustycznych przy monitorowaniu stanu narzędzia przy toczeniu utwardzonej stali AISI4340.
    Źródło:
    Archive of Mechanical Engineering; 2015, LXII, 2; 237-255
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dosimetry of 131 I for Occupational Radiation Workers by Whole Body Counting System
    Autorzy:
    Rahman, M. S.
    Haydar, M. A.
    Patwary, M. K. A.
    Shome, S. M.
    Paul, S.
    Paul, D.
    Meaze, A. K. M. M. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/411910.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Internal Dosimetry
    Whole Body Counter
    IMBA
    131I
    Opis:
    Internal radiation dosimetry of occupational radiation workers due to inhalation of 131 I during maintenance at iodine 131 I hot cell of Radioisotope Production Division (RIPD) of Bangladesh Atomic Energy Commission have been performed with Whole Body Counter (WBC) containing two large size NaI detector. The contaminated radioactivity of the radiation workers by 131 I was immediately conducted using a WBC (CANBERRA, FASTSCAN model 2250) and counting was repeated again a few days later. The performance of whole body counter was checked by CANBERRA transfer phantom (model 2257) with a mixed source (20 ml vial). The intake was calculated by Apex-Invivo counting software and then corresponding dose in thyroid were estimated by using Integrated Modules for Bioassay Analysis (IMBA) Professional Plus code modules. The body activity due to intake of 131 I and the total effective and equivalent dose in thyroid were also estimated and discussed.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 20, 1; 21-27
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The prevalence, characteristics, and impact of work-related musculoskeletal disorders among physical therapists in the Kingdom of Saudi Arabia – a cross-sectional study
    Autorzy:
    Kakaraparthi, Venkata Nagaraj
    Vishwanathan, Karthik
    Gadhavi, Bhavana
    Reddy, Ravi Shankar
    Samuel, Paul S.
    Alshahrani, Mastour Saeed
    Kakaraparthi, Lalitha
    Gannamaneni, Vamsi Krishna
    Tedla, Jaya Shanker
    Powiązania:
    https://bibliotekanauki.pl/articles/2081895.pdf
    Data publikacji:
    2021-08-31
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    physical therapy
    ergonomics
    musculoskeletal disorders
    workload
    prevalence
    Saudi Arabia
    Opis:
    BackgroundPhysical therapists are known to be susceptible to work-related musculoskeletal disorders (WMSDs), but the prevalence of WMSDs in Saudi Arabia has not been documented. This study aimed to establish the prevalence, characteristics, and risk factors of WMSDs among physical therapists in Saudi Arabia.Material and MethodsA cross-sectional study was conducted among 113 physical therapists in Saudi Arabia using a 6-component questionnaire. Descriptive statistics, incidence, percentages, and χ2 test were used for data analysis.ResultsThe response rate was 68.8%. The reported 12-month incidence of WMSDs was 83.8%. The low back (63.7%) was the most common site of these disorders, followed by the neck (59.2%), while the hip/thigh (4.4%) was the least involved body part. Incidence was related to gender: females were more affected than males (neck, shoulders, low back); age: younger therapists were more affected than older ones (shoulders, low back); working sector: government sector workers were more affected than those employed in other sectors (neck); and specialty: orthopedic specialists were the most frequently affected, followed by those specializing in neurology (thumbs, upper back, knees, ankle/foot). Most of the physical therapists had >5 periods of neck, shoulder, and low-back WMSDs. The most important risk factor for WMSDs was treating more patients in a day (47.7%). The most frequently adopted handling strategy identified to combat WMSDS was modifying the patient’s position (62.8%).ConclusionsOverall, WMSDs among physical therapists in Saudi Arabia are common, with the low back and the neck constituting the most frequently affected body regions. Professional experience and the awareness of ergonomics principles can help prevent the early development of WMSDs among physical therapists. Med Pr. 2021;72(4):363–73
    Źródło:
    Medycyna Pracy; 2021, 72, 4; 363-373
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioleaching of nickel by Aspergillus humicola SKP102 isolated from Indian lateritic overburden
    Autorzy:
    Ghosh, S.
    Paul, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/92057.pdf
    Data publikacji:
    2016
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    Fungal bioleaching
    Aspergillus humicola
    chromite mining overburden
    nickel leaching
    bioługowanie
    wymywanie niklu
    Opis:
    The lateritic deposits spread over the Eastern Ghats of Sukinda Valley, Odisha, India, produce a huge amount of overburden annually as a byproduct of chromite mining. This chromite mining overburden contains nickel, the only source of the metal in the country. During this study Aspergillus humicola SKP102, an indigenous fungus isolated from the mining overburden was employed for the leaching of nickel. About 53.89% of the nickel could be leached by the fungus when grown in batch mode using a Czapek dox medium containing 2% (w/v) of the mining overburden. The parameters affecting bioleaching were optimized in order to grow the fungus and leach the metal. Of the different options of cheap carbon sources, straw infusion and molasses emerged as viable options for the growth of the fungus and the leaching of nickel. Two-step and indirect techniques were also used for this purpose, and they resulted in 53.09% and 65.04% Ni leaching respectively. Adding diluted sulfuric acid to the leaching medium resulted in 97.05% nickel recovery from the overburden pulp. A. humicola SKP102 could be a potential tool for leaching nickel from the mining overburden.
    Źródło:
    Journal of Sustainable Mining; 2016, 15, 3; 108-114
    2300-1364
    2300-3960
    Pojawia się w:
    Journal of Sustainable Mining
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unusual clinical expression of Echinococcus multilocularis infection in a Polish population - why does the disease occur in younger patients?
    Autorzy:
    Nowak, S.
    Paul, M.
    Stefaniak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/6525.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    parasite
    parasitic disease
    human disease
    alveolar echinococcosis
    Echinococcus multilocularis
    infection
    Polish population
    young age
    patient
    Źródło:
    Annals of Parasitology; 2016, 62, Suppl.
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbial degradation of lignocellulosic biomass: discovery of novel natural lignocellulolytic bacteria
    Autorzy:
    Ahmed, S.
    Rahman, S.
    Hasan, M.
    Paul, N.
    Sajib, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/81125.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lignocellulose
    microbial degradation
    biofuel
    cellulose
    lignin
    hemicellulose
    lignocellulolytic bacteria
    Chryseobacterium gleum
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2018, 99, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exploring the potential of fungal-bacterial consortium for low-cost biodegradation and detoxification of textile effluent
    Autorzy:
    Lade, H.
    Kadam, A.
    Paul, D.
    Govindwar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/204834.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fungal-bacterial consortium
    wheat bran
    textile effluent
    decolorization
    biodegradation
    detoxification
    Opis:
    In the present study, the enrichment and isolation of textile effluent decolorizing bacteria were carried out in wheat bran (WB) medium. The isolated bacterium Providencia rettgeri strain HSL1 was then tested for decolorization of textile effluent in consortium with a dyestuff degrading fungus Aspergillus ochraceus NCIM 1146. Decolorization study suggests that A. ochraceus NCIM 1146 and P. rettgeri strain HSL1 alone re moves only 6 and 32% of textile effluent American Dye Manufacturing Institute respectively in 30 h at 30 ±0.2°C of microaerophilic incubation, while the fungal-bacterial consortium does 92% ADMI removal within the same time period. The fungal-bacterial consortium exhibited enhanced decolorization rate due to the induction in activities of catalytic enzymes laccase (196%), lignin peroxidase (77%), azoreductase (80%) and NADH-DCIP reductase (84%). The HPLC analysis confirmed the biodegradation of textile effluent into various metabolites. Detoxification studies of textile effluent before and after treatment with fungal-bacterial consortium revealed reduced toxicity of degradation metabolites. The efficient degradation and detoxification by fungal-bacterial consortium pre-grown in agricultural based medium thus suggest a promising approach in designing low-cost treatment technologies for textile effluent.
    Źródło:
    Archives of Environmental Protection; 2016, 42, 4; 12-21
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Compressive Deformation Behavior of an Ultrafine/Nano Grained AZ31 Magnesium Processed by Accumulative Back Extrusion
    Autorzy:
    Fatemi, S. M.
    Zarei-Hanzaki, A.
    Paul, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/356044.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    compressive deformation
    AZ31magneium alloy
    accumulative back extrusion
    Opis:
    An AZ31magneium alloy was processed through accumulative back extrusion (ABE) process at 280 °C up to six passes. Compressive deformation behavior of the processed materials was studied by employing uniaxial compression tests at room temperature. The results indicated that grains of 80 nm to 1 µm size were formed during accumulative back extrusion, where the mean grain size of the experimental material was reduced by applying successive ABE passes. A deformation texture characterizing with the basal plane mainly lie inclined to the deformation axis was developed. Compressive yield and maximum compressive strengths were measured to increase by applying successive extrusion passes, while the strain-to-fracture dropped. The evolution of mechanical properties was explained relying on the grain refinement effect as well as texture change. It was described that the share of different deformation mechanisms and developing of shearing regions near the grain boundaries may influence the deformation behavior of the ultrafine/nano grained AZ31 alloy.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 3; 1593-1600
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aspergillus niger, a dominant phylloplane coloniser, influences the activity of defense enzymes in Solanum lycopersicum
    Autorzy:
    Goswami, S.
    Paul, P.K.
    Sharma, P.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084798.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Aspergillus niger
    phylloplane
    peroxidase
    phenylalanine ammonia lyase
    polyphenol oxidase
    Solanum lycopersicum
    tyrosine ammonia lyase
    Opis:
    Phylloplane microbes have been studied as strategic tools in management against plant pathogens. Non-pathogenic bacteria and fungi have been applied as crop protectants against various plant diseases. The present study aimed at evaluating the potentiality of Aspergillus niger spores in altering the activity of four key enzymes related to defense in tomato. The experiment was designed such that two groups of 50 tomato plants were considered: group 1 – sprayed with autoclaved distilled water (control) and group 2 – sprayed with A. niger spores. Spraying was carried out under aseptic conditions. The experimental parameters included analysis of the activity of peroxidase (POX), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL) and tyrosine ammonia lyase (TAL) as well as expression of POX and PPO isoforms. The results demonstrated an inductive effect of A. niger on the activity of POX, PPO, PAL and TAL. Enhanced expression of POX and PPO isoforms was also observed. The results indicated that A. niger can be considered probiotic for the management of tomato against its phytopathogens.
    Źródło:
    Journal of Plant Protection Research; 2019, 59, 4; 512-518
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High pressures studies on hydrides of selected manganese alloys
    Autorzy:
    Sugiura, H.
    Filipek, S.
    Paul-Boncour, V.
    Marchuk, I.
    Liu, R.
    Pyun, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/146225.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    deuterides/hydrides
    high pressure
    ferromagnetic fcc-manganese
    Laves phases
    equation of state
    Opis:
    Specific behavior found in hydrides formed in manganese, Mn-Ni and YMn2 under high pressure is presented and discussed. The synthesis of ferromagnetic fcc-manganese was proved. Parameters of the equations of state (EOS) derived from measurements in the diamond anvil cell (DAC) are summarized for manganese hydrides and for hydrides derived from YMn2 Laves phase. It was found that the compression behavior of recently discovered YMn2H6 is different from YMn2-based hydrides with lower hydrogen content.
    Źródło:
    Nukleonika; 2006, 51,suppl.1; 73-77
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The sixth sense in mammalian forerunners: variability of the parietal foramen and the evolution of the pineal eye in South African Permo-Triassic eutheriodont therapsids
    Autorzy:
    BENOIT, JULIEN
    ABDALA, FERNANDO
    MANGER, PAUL R.
    RUBIDGE, BRUCE S.
    Powiązania:
    https://bibliotekanauki.pl/articles/945457.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    therapsida
    pineal
    parietal foramen
    third eye
    endothermy
    permian
    triassic
    south africa
    Opis:
    In some extant ectotherms, the third eye (or pineal eye) is a photosensitive organ located in the parietal foramen on the midline of the skull roof. The pineal eye sends information regarding exposure to sunlight to the pineal complex, a region of the brain devoted to the regulation of body temperature, reproductive synchrony, and biological rhythms. The parietal foramen is absent in mammals but present in most of the closest extinct relatives of mammals, the Therapsida. A broad ranging survey of the occurrence and size of the parietal foramen in different South African therapsid taxa demonstrates that through time the parietal foramen tends, in a convergent manner, to become smaller and is absent more frequently in eutherocephalians (Akidnognathiidae, Whaitsiidae, and Baurioidea) and non-mammaliaform eucynodonts. Among the latter, the Probainognathia, the lineage leading to mammaliaforms, are the only one to achieve the complete loss of the parietal foramen. These results suggest a gradual and convergent loss of the photoreceptive function of the pineal organ and degeneration of the third eye. Given the role of the pineal organ to achieve fine-tuned thermoregulation in ectotherms (i.e., “cold-blooded” vertebrates), the gradual loss of the parietal foramen through time in the Karoo stratigraphic succession may be correlated with the transition from a mesothermic metabolism to a high metabolic rate (endothermy) in mammalian ancestry. The appearance in the eye of melanopsin-containing retinal ganglion cells replacing the photoreceptive role of the pineal eye could also have accompanied its loss.
    Źródło:
    Acta Palaeontologica Polonica; 2016, 61, 4; 777-789
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating the Factors Affecting High School Student Rebellion
    Autorzy:
    Ganiron, Thomashley S.
    Fajardo, Prinnah
    Baniago, Paul Andrei
    Barcelona, Mervin
    Powiązania:
    https://bibliotekanauki.pl/articles/1179249.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Adolescence
    peer pressure
    psychological effect
    stem course
    student independence
    student rebellion
    Opis:
    Although research has uncovered important psychological effects of student rebellion in high school, the factors of student rebellion have not been fully explored. This descriptive study aimed to identify and analyze the factors that motivate students to rebel and find solutions to the student's problem. Young people turn their back on their parents, leave home and lose touch. The individual respondents were selected students of STEM (Science, Engineering, Technology, and Mathematics) courses of Sta Clara Parish School using purposive sampling. It utilized validated researcher-made questionnaire, unstructured interview, and documentary analysis as its data gathering instruments. The data gathered were treated using frequency, percentage count, and weighted mean,
    Źródło:
    World Scientific News; 2017, 80; 158-176
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    la mort
    Autorzy:
    Czechowicz, Józef
    Współwytwórcy:
    Niedziałkowska, Marta
    Paul, Magdalena
    S., M.
    Sekuła, Aleksandra
    Data publikacji:
    2008-12-29
    Wydawca:
    Fundacja Nowoczesna Polska
    Tematy:
    Dwudziestolecie międzywojenne
    Wiersz
    Liryka
    Opis:
    Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl). Reprodukcja cyfrowa wykonana przez Bibliotekę Narodową z egzemplarza pochodzącego ze zbiorów BN.
    Źródło:
    Józef Czechowicz, Dzień jak codzień, F. Hoesick, Warszawa 1930.
    Dostawca treści:
    Wolne Lektury
    Książka
    Tytuł:
    Highly efficient cladding pumped dual-wavelength thulium ytterbium co-doped fiber laser
    Autorzy:
    Latiff, A.A.
    Babar, I.
    Shamsudin, H.
    Paul, M.
    Halder, A.
    Das, S.
    Bhadra, S.
    Ahmad, H.
    Harun, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058544.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.55.Wd
    42.60.Fc
    42.70.-a
    Opis:
    This paper describes the all-fiber dual-wavelength thulium ytterbium co-doped fiber laser by using a newly developed octagonal shaped double-clad thulium-ytterbium co-doped fiber as gain medium in conjunction with spatial filtering effect. The thulium ytterbium co-doped fiber laser operates at wavelengths of 1990.64 nm and 1998.92 nm with a signal to noise ratio of more than 34 dB as the 980 nm multimode pump power is increased above a threshold value of 1.5 W. The slope efficiency of the dual-wavelength laser is measured to be around 26.16%, which is comparable with the conventional thulium laser pumped by 800 nm single mode pump.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 6; 1332-1335
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gaps in the Saturation Spectrum of Trees
    Autorzy:
    Horn, Paul
    Gould, Ronald J.
    Jacobson, Michael S.
    Thomas, Brent J.
    Powiązania:
    https://bibliotekanauki.pl/articles/31343596.pdf
    Data publikacji:
    2019-02-01
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    saturation spectrum
    tree
    saturation number
    Opis:
    A graph G is H-saturated if H is not a subgraph of G but the addition of any edge from the complement of G to G results in a copy of H. The minimum number of edges (the size) of an H-saturated graph on n vertices is denoted sat(n,H), while the maximum size is the well studied extremal number, ex(n,H). The saturation spectrum for a graph H is the set of sizes of H-saturated graphs between sat(n,H) and ex(n,H). In this paper we show that paths, trees with a vertex adjacent to many leaves, and brooms have a gap in the saturation spectrum.
    Źródło:
    Discussiones Mathematicae Graph Theory; 2019, 39, 1; 157-170
    2083-5892
    Pojawia się w:
    Discussiones Mathematicae Graph Theory
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tribological behavior, mechanical properties and microstructure of Al-12Si-ZrC composite prepared by powder metallurgy
    Autorzy:
    John, C. F.
    Paul, R. C.
    Singh, S. C. E.
    Ramkumar, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/201910.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear
    friction
    aluminium
    silicon
    zirconium carbides
    powder metallurgy
    tarcie
    krzem
    węgliki cyrkonu
    metalurgia proszków
    Opis:
    High-energy mechanical alloying method was used to prepare Al-12Si-xZrC (x = 0, 5, 10, 15 wt. %) nanocomposites. Cylindrical preforms were prepared with an initial preform density of 89% by using a suitable die and punch assembly. The preforms were sintered in a muffle furnace with an inert gas atmosphere at a temperature of 550°C, followed by cooling until room temperature has been attained. Scanning electron microscope (SEM) and X-ray diffraction (XRD) techniques were used to characterize the composites. Pin-on-disc wear testing machine was used to determine the tribological properties of the prepared composites. The results show that the wear loss reduced with increasing the reinforcement content and coefficient of friction increases gradually.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 2; 149-154
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prohibitins and Ras2 protein cooperate in the maintenance of mitochondrial function during yeast aging.
    Autorzy:
    Kirchman, Paul
    Miceli, Michael
    West, Roger
    Jiang, James
    Kim, Sangkyu
    Jazwinski, S
    Powiązania:
    https://bibliotekanauki.pl/articles/1043375.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ROS
    retrograde response
    Saccharomyces cerevisiae
    longevity
    mitochondrial biogenesis
    Opis:
    The yeast Saccharomyces cerevisiae has a finite replicative life span. Yeasts possess two prohibitins, Phb1p and Phb2p, in similarity to mammalian cells. These proteins are located in the inner mitochondrial membrane, where they are involved in the processing of newly-synthesized membrane proteins. We demonstrate that the elimination of one or both of the prohibitin genes in yeast markedly diminished the replicative life span of cells that lack fully-functional mitochondria, while having no effect on cells with functioning mitochondria. This deleterious effect was suppressed by the deletion of the RAS2 gene. The expression of PHB1 and PHB2 declined gradually up to 5-fold during the life span. Cells in which PHB1 was deleted in conjunction with the absence of a mitochondrial genome displayed remarkable changes in mitochondrial morphology, distribution, and inheritance. This loss of mitochondrial integrity was not seen in cells devoid of PHB1 but possessing an intact mitochondrial genome. In a subset of the cells, the changes in mitochondrial integrity were associated with increased production of reactive oxygen species, which co-localized with the altered mitochondria. The mitochondrial deficits described above were all suppressed by deletion of RAS2. Our data, together with published information, are interpreted to provide a unified view of the role of the prohibitins in yeast aging. This model posits that the key initiating event is a decline in mitochondrial function, which leads to progressive oxidative damage that is exacerbated in the absence of the prohibitins. This aggravation of the initial damage is ameliorated by the suppression of the production of mitochondrial proteins in the absence of Ras2p signaling of mitochondrial biogenesis.
    Źródło:
    Acta Biochimica Polonica; 2003, 50, 4; 1039-1056
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    World Health Organization MPOWER for tobacco control in India: a 6-year retrospective analysis
    Autorzy:
    Malhi, R.
    Mago, G.
    Sharma, P.
    Gambhir, R.S.
    Aggarwal, A.
    Paul, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/28763548.pdf
    Data publikacji:
    2023
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Opis:
    Background. Prevalence and practices of tobacco usage in India are diverse and incongruent and Government of India has enacted various laws to overcome this burden. To make tobacco control measures effective and powerful, WHO introduced MPOWER in 2004 and India was one of the first countries that implemented the MPOWER. Objective. This study is aimed to quantify the implementation of MPOWER tobacco control policies in India. Material and Methods. In this retrospective analysis, data was gathered from the WHO MPOWER of India from 2015 to 2021. This analysis was based on the checklist which was designed previously by Iranian and international tobacco control specialists in their study on tobacco control. Results. In the present comparative analysis, India was categorized by scores and these were acquired from each indicator for each activity and 2021 year got the highest scores as compared to the previous year scores i.e. 27 in 2015. In context to individual indicators, noticeable increase in scores has been seen in both health warning on cigarette packages and adult daily smoking prevalence, whereas no progress was observed in smoking related policies. Conclusion. Although MPOWER programmes are widely accepted by the Indian government, but still substantial improvement in fewer sections is required.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2023, 74, 4; 421-426
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of Low–power 4-bit Flash ADC Using Multiplexer Based Encoder in 90nm CMOS Process
    Autorzy:
    Shylu Sam, D. S.
    Sam Paul, P.
    Jeba Jingle, Diana
    Mano Paul, P.
    Samuel, Judith
    Reshma, J.
    Sudeepa, P. Sarah
    Evangeline, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2124770.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    flash ADC
    low power
    dynamic comparator
    encoder
    Opis:
    This work describes a 4-bit Flash ADC with low power consumption. The performance metrics of a Flash ADC depend on the kind of comparator and encoder used. Hence openloop comparator and mux-based encoder are used to obtain improved performance. Simulation results show that the simulated design consumes 0.265mW of power in 90nm CMOS technology using cadence-virtuoso software. The circuit operates with an operating frequency of 100MHz and a supply voltage of 1V.
    Źródło:
    International Journal of Electronics and Telecommunications; 2022, 68, 3; 565--570
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corrosion behavior of ZrC particles reinforcement with Al-12Si composites by weight loss method using acidic media
    Autorzy:
    John, C. F.
    Paul, R. C.
    Singh, S. C. E.
    Jacobjose, J.
    Ramkumar, T.
    Hikku, G. S.
    Sharma, R. K.
    Sengottuvel, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/200059.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Si-ZrC composites
    powder metallurgy
    weight loss method
    corrosion rate
    SEM
    kompozyty Al-Si-ZrC
    metalurgia proszków
    metoda redukcji masy
    szybkość korozji
    Opis:
    This paper aims to investigate the corrosion behavior of zirconium carbide (ZrC) reinforced Al – Si metal matrix composites (MMCs) in a mixture of acidic solution using weight loss method. The composites are prepared by powder metallurgy method. Al-12Si-xZrC composites containing 0, 5, and 10 weight percentage of ZrC particles are compacted in a die set assembly and sintered in an inert gas muffle furnace. The acidic solutions used for corrosion are 1 N HCl, 1 N H2SO4 and 1 N HNO3. The corrosion characteristics of Al-12Si-xZrC composites and the pure Al were experimentally evaluated. The corrosion test was carried out at different weight proportions of the samples in various concentrations of the acid such as 1 N HCl, 1 N H2SO4 and 1 N HNO3 for different exposure time (i.e., 24 h, 72 h, 144 h and 216 h), respectively. The results specified that corrosion rate of composites was lower than that of base metal Al under the corrosive atmosphere, regardless of exposure time and acidic solutions used as corrodents. Al-12Si-xZrC composites become more corrosion resistant as the ZrC content is increased. This is because of the development of stable oxide layer above the specimens. Scanning electron microscopy (SEM) confirms the degree of attack of acidic solution on the surface of the examined material.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 1; 9-16
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards Attosecond Pulses with High Harmonics
    Autorzy:
    Agostini, P.
    Paul, P. M.
    Breger, P.
    Toma, E. S.
    Muller, H. G.
    Mullot, G.
    Augé, F.
    Balcou, Ph.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030463.pdf
    Data publikacji:
    2002-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Re
    42.65.Ky
    32.80.Rm
    33.60.Cv
    Opis:
    The high harmonics produced by focusing an intense femtosecond laser in a gas are theoretically shown to be locked in phase. The physics of this locking is discussed and a new method based on quantum interference in two-photon, two-color ionization allowing to retrieve the relative phase of harmonic pairs is described. The main result is that the 5 harmonics of orders 11-19 produced in argon generate a train of subfemtosecond pulses with a period of 1.35 fs and a duration of 250 attoseconds.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 3; 313-324
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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