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    Wyświetlanie 1-9 z 9
    Tytuł:
    Superconductivity and Quantum Critical Behavior in Cr_{100-z}Os_z
    Autorzy:
    Prinsloo, A.
    Sheppard, C.
    Fernando, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398328.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    75.30.Fv
    74.70.Ad
    74.40.Kb
    Opis:
    The magnetic phase diagrams of Cr alloys with group-8 metals, such as Re and Ru, show interesting properties. These include quantum critical and superconducting behavior. In order to extend these investigations this paper reports on the physical properties and the magnetic phase diagram of the $Cr_{100-z}Os_{z}$ system, investigated in a concentration range of 2 ≤ z ≤ 30.6. Structural analysis indicate that samples with z<22 have a bcc structure, while those with z>22 include a cubic A15-type structure. Transport and magnetic property measurements indicate that the antiferromagnetic phase disappears at z ≈ 14 and that samples with concentrations z ≥ 12.2 show superconducting behavior. The magnetic phase diagram of $Cr_{100-z}Os_{z}$ is constructed from the Néel and superconducting transition temperatures obtained from various measurements. The commensurate spin-density-wave to paramagnetic phase line decreases sharply for z>4. Fitting parameters of a power law fit to the commensurate spin-density-wave to paramagnetic phase line indicate possible quantum critical behavior. Present results suggest that this phase line terminates in a superconducting dome near a magnetic quantum critical point, similar to that observed in certain heavy fermion systems, but not previously reported for other Cr alloys.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 1132-1134
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Weather routing system architecture using onboard data collection and route optimisation
    Autorzy:
    Szłapczyńska, Joanna
    Vettor, Roberto
    Szłapczyński, Rafał
    Łącki, Mirosław
    Życzkowski, Marcin
    Hinostroza, Miguel A.
    Santos, Fernando P.
    Tycholiz, Wojciech
    Soares, C. Guedes
    Powiązania:
    https://bibliotekanauki.pl/articles/32899953.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    system architecture
    weather routing
    onboard data monitoring
    route optimisation
    data transmission optimisation
    Opis:
    This paper describes the architecture of a weather routing system consisting of two key elements: onboard monitoring and route optimiser sub-systems. The former is responsible for collecting various onboard measurements, such as current ship position or ship motion variables. These data, when gathered and processed, are then used for fine-tuning a ship model. The model, together with weather forecasts, is utilised by a multi-objective route optimiser to estimate forecasted ship responses during the voyage. The route optimiser has been developed in a client-server architecture to reallocate all necessary high-tech resources to the server side and keep the client software as simple and light as possible. The system also includes a module responsible for optimising transmission costs, to reduce onboard transmission during the voyage. The entire solution has been deployed onboard the demonstrator ship ‘Monte da Guia’ and tested during its operations at sea.
    Źródło:
    Polish Maritime Research; 2022, 2; 87-95
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strain distributions in group IV and III-V semiconductor quantum dots
    Autorzy:
    Wijewardena Gamalath, K. A. I. L.
    Fernando, M.A.I.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/411953.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    quantum dot
    strain distribution
    hydrostatic strain
    biaxial strain
    Opis:
    A theoretical model was developed using GreenˇŚs function with an anisotropic elastic tensor to study the strain distribution in and around three dimensional semiconductor pyramidal quantum dots formed from group IV and III-V material systems namely, Ge on Si, InAs on GaAs and InP on AlP. A larger positive strain in normal direction which tends to zero beyond 6nm was observed for all three types while the strains parallel to the substrate were negative. For all the three types of quantum dots hydrostatic strain and biaxial strain along x and z directions were not linear but described a curve with a maximum positive value near the base of the quantum dot. The hydrostatic strain in x-direction is mostly confined within the quantum dot and practically goes to zero outside the edges of the quantum dot. For all the three types, the maximum hydrostatic and biaxial strains occur in x-direction around �{1nm and around 2nm in z-direction. The negative strain in x-direction although realtively weak penetrate more deeper to the substrate than hydrostatic strain.The group IV substrate gave larger hydrostatic and biaxial strains than the group III-V semiconductor combinations and InAs /GaAs was the most stable. The results indicated that the movements of atoms due to the lattice mismatch were strong for group III-V.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 2; 36-48
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On finite minimal non-p-supersoluble groups
    Autorzy:
    Tuccillo, Fernando
    Powiązania:
    https://bibliotekanauki.pl/articles/967616.pdf
    Data publikacji:
    1992
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Opis:
    If ℱ is a class of groups, then a minimal non-ℱ-group (a dual minimal non-ℱ-group resp.) is a group which is not in ℱ but any of its proper subgroups (factor groups resp.) is in ℱ. In many problems of classification of groups it is sometimes useful to know structure properties of classes of minimal non-ℱ-groups and dual minimal non-ℱ-groups. In fact, the literature on group theory contains many results directed to classify some of the most remarkable among the aforesaid classes. In particular, V. N. Semenchuk in [12] and [13] examined the structure of minimal non-ℱ-groups for ℱ a formation, proving, among other results, that if ℱ is a saturated formation, then the structure of finite soluble, minimal non-ℱ-groups can be determined provided that the structure of finite soluble, minimal non-ℱ-groups with trivial Frattini subgroup is known. In this paper we use this result with regard to the formation of p-supersoluble groups (p prime), starting from the classification of finite soluble, minimal non-p-supersoluble groups with trivial Frattini subgroup given by N. P. Kontorovich and V. P. Nagrebetskiĭ ([10]). The second part of this paper deals with non-soluble, minimal non-p-supersoluble finite groups. The problem is reduced to the case of simple groups. We classify the simple, minimal non-p-supersoluble groups, p being the smallest odd prime divisor of the group order, and provide a characterization of minimal simple groups. All the groups considered are finite.
    Źródło:
    Colloquium Mathematicum; 1992, 63, 1; 119-131
    0010-1354
    Pojawia się w:
    Colloquium Mathematicum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Emergence of eSports Nutrition: A Review
    Autorzy:
    Ribeiro, Fernando J.
    Viana, Victor M.
    Borges, Nuno P.
    Teixeira, Vitor H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339108.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    eSports
    nutrition
    eSports nutrition
    video games
    cognitive performance
    Opis:
    Peak cognitive performance is of paramount importance for the sports and competitive activities that depend on a high level of cognitive performance, such as eSports. The popularity of eSports has increased rapidly in recent years and will probably continue to rise in the forthcoming years. Above all, eSports practitioners require higher levels of cognitive abilities and motor skills for optimal performance and may benefit from adequate body composition and proper nutrition, as happens with more traditional athletes. However, there is a noticeable shortage of scientific knowledge in this area, including in nutritional-related aspects. Therefore, the objective of this non-systematic review is to summarize the nutritional strategies that may enhance health, cognitive performance, decrease reaction time and minimize fatigue. This information may be relevant for eSports competitors and set a base for further investigations, which could ultimately lead to the establishment of nutritional recommendations specific for this competitive population.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2021, 33, 1; 81-95
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
    Autorzy:
    Gómez, Fernando
    Zhang, Huan
    Roselli, Leonilde
    Lin, Senjie
    Powiązania:
    https://bibliotekanauki.pl/articles/2041940.pdf
    Data publikacji:
    2022-02-14
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Dinophyta
    harmful algae bloom
    invasive alien species
    non-indigenous species
    molecular phylogenetics
    toxic phytoplankton
    Opis:
    A dinoflagellate identified as Prorocentrum dentatum, P. shikokuense or P. donghaiense is responsible of massive harmful events. Blooms of a species identified as P. shikokuense have been recently reported in the Mediterranean Sea, and an exotic origin, tentatively introduced by ballast waters from Asia, has been hypothesized. The molecular data based on the small-, large subunit, and internal transcriber spacers ribosomal RNA gene (SSU-, LSU-, ITS rRNA) sequences confirmed P. shikokuense in the Mediterranean Sea. The Mediterranean ribotype is identical to a subtropical North Atlantic ribotype, and with slight divergence from the numerous sequences from the Pacific Ocean. To revisit the relationship between P. shikokuense (=P. donghaiense) and P. obtusidens, we provide the first micrographs of P. dentatum and P. obtusidens, the latter collected from the type locality. Our observations indicate that P. dentatum, P. obtusidens, and P. shikokuense are three different species. Their diagnostic morphological characters are: Prorocentrum dentatum is 44–60 μm long, leaf-shaped, pointed and central posterior end, conspicuous anterior shoulder; P. obtusidens is 33–41 μm long, irregular parallelepiped, almost paralel valve margins, eccentric and pointed posterior end, moderate anterior shoulder; and P. shikokuense is <25 μm long, sunflower seed-shaped, round and centric posterior end, inconspicuous anterior shoulder.
    Źródło:
    Acta Protozoologica; 2021, 60; 47-59
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the dependence of parameters in the equivalence theorem for the real method
    Autorzy:
    Cobos, Fernando
    Fernández-Cabrera, Luz María
    Karadzhov, Georgi E.
    Kühn, Thomas
    Powiązania:
    https://bibliotekanauki.pl/articles/745875.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Matematyczne
    Tematy:
    Real interpolation
    K-functional
    J-functional
    p-normed spaces.
    Opis:
    We determine the exact dependence on \(\theta,q,p\) of the constants in the equivalence theorem for the real interpolation method \((A_0,A_1)_{\theta,q}\) with pairs of \(p\)-normed spaces.
    Źródło:
    Commentationes Mathematicae; 2015, 55, 2
    0373-8299
    Pojawia się w:
    Commentationes Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Synergic Relationship Between Industry 4.0 and Lean Management: Best Practices from the Literature
    Autorzy:
    Santos, Beatrice Paiva
    Enrique, Daisy Valle
    Maciel, Vinicius B.P.
    Lima, Tânia Miranda
    Charrua-Santos, Fernando
    Walczak, Renata
    Powiązania:
    https://bibliotekanauki.pl/articles/1841433.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Industry 4.0
    lean management
    advanced technology
    manufacturing management
    best practices
    Opis:
    Industry 4.0 promises to make manufacturing processes more efficient using modern technologies like cyber-physical systems, internet of things, cloud computing and big data analytics. Lean Management (LM) is one of the most widely applied business strategies in recent decades. Thus, implementing Industry 4.0 mostly means integrating technologies in companies that already operate according to LM. However, due to the novelty of the topic, research on how LM and Industry 4.0 can be integrated is still under development. This paper explores the synergic relationship between these two domains by identifying six examples of real cases that address LM-Industry 4.0 integration in the extant literature. The goal is to make explicit the best practices that are being implemented by six distinct industrial sectors such as automotive, paper, furniture, healthcare, apparel, and machine manufacturing.
    Źródło:
    Management and Production Engineering Review; 2021, 12, 1; 94-107
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fetal biometric parameters: Reference charts for a non-selected risk population from Uberaba, Brazil
    Parametry biometryczne płodu: wykresy odniesienia dla nieselektywnej populacji ryzyka z Uberaby w Brazylii
    Autorzy:
    Borges Peixoto, Alberto
    Mara Rodrigues da Cunha Caldas, Taciana
    Dulgheroff, Fernando Felix
    Martins, Wellington P.
    Araujo Júnior, Edward
    Powiązania:
    https://bibliotekanauki.pl/articles/1033225.pdf
    Data publikacji:
    2017
    Wydawca:
    Medical Communications
    Tematy:
    abdominal circumference
    Opis:
    Objective: To establish reference charts for fetal biometric parameters in a non-selected risk population from Uberaba, Southeast of Brazil. Methods: A retrospective cross-sectional study was performed among 5656 non-selected risk singleton pregnant women between 14 and 41 weeks of gestation. The ultrasound exams were performed during routine visits of second and third trimesters. Biparietal diameter (BPD) was measured at the level of the thalami and cavum septi pellucidi. Head circumference (HC) was calculated by the following formula: HC = 1.62*(BPD + occipital frontal diameter, OFD). Abdominal circumference (AC) was measured using the following formula: AC = (anteroposterior diameter + transverse abdominal diameter) × 1.57. Femur diaphysis length (FDL) was obtained in the longest axis of femur without including the distal femoral epiphysis. The estimated fetal weight (EFW) was obtained by the Hadlock formula. Polynomial regressions were performed to obtain the best-fit model for each fetal biometric parameter as the function of gestational age (GA). Results: The mean, standard deviations (SD), minimum and maximum of BPD (cm), HC (cm), AC (cm), FDL (cm) and EFW (g) were 6.9 ± 1.9 (2.3 – 10.5), 24.51 ± 6.61 (9.1 – 36.4), 22.8 ± 7.3 (7.5 – 41.1), 4.9 ± 1.6 (1.2 – 8.1) and 1365 ± 1019 (103 – 4777), respectively. Second-degree polynomial regressions between the evaluated parameters and GA resulted in the following formulas: BPD = –4.044 + 0.540 × GA – 0.0049 × GA² (R² = 0.97); HC= –15.420 + 2.024 GA – 0.0199 × GA² (R² = 0.98); AC = –9.579 + 1.329 × GA – 0.0055 × GA² (R² = 0.97); FDL = –3.778 + 0.416 × GA – 0.0035 × GA² (R² = 0.98) and EFW = 916 – 123 × GA + 4.70 × GA² (R² = 0.96); respectively. Conclusion: Reference charts for the fetal biometric parameters in a non-selected risk population from Uberaba, Southeast of Brazil, were established.
    Rozmiar płodu oraz trajektorie jego rozwoju są waż- nymi wskaźnikami zdrowia płodu, a najważniejszym standardem jest prenatalne badanie ultrasonograficzne. Zaburzenia rozwoju płodu zazwyczaj identyfikuje się na podstawie rozbieżności pomiędzy faktycznymi a oczekiwanymi miarami biometrycznymi dla określonego wieku ciążowego(1). Rutynowe badanie USG, bez opcji dopplerowskiej, w 3. trymestrze zwiększa stopień wykrywalności zarodków ma- łych jak na wiek ciążowy (small for gestational age, SGA) z 46 do 80% oraz zarodków dużych jak na wiek ciążowy (large for gestational age, LGA) z 36 do 91%, jak udowodniono w badaniach randomizowanych(2). W późnym 3. trymestrze (34.–37. tydzień) USG znacznie zwiększa stopień wykrywalności SGA i LGA (odpowiednio do 75,2% i 63,2%)(3). Krótkoterminowe wyniki płodu SGA i LGA kojarzone są z porażeniem mózgowym, hipoglikemią, hiperbilirubinemią, nadkrwistością lub dystocją(4,5). Wyniki długoterminowe u tych płodów kojarzone są z wysokim ryzykiem ciśnienia tętniczego, cukrzycy i choroby wieńcowej(6). Artykuł w wersji polskojęzycznej jest dostępny na stronie http://jultrason.pl/wydawnictwa/volume-17-no-68
    Źródło:
    Journal of Ultrasonography; 2017, 17, 68; 23-29
    2451-070X
    Pojawia się w:
    Journal of Ultrasonography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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