40 research outputs found

    Ferromagnetic Resonance Measurement Using a Novel Short Circuited Coaxial Probe Technique

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    A versatile technique to characterize the ferromagnetic resonance (FMR) of ferrite samples using a short circuited coaxial probe is presented. The technique has sensitivity comparable to that of well-established methods besides its non-contact nature, broadband and local. Detailed theoretical approach and simulation studies (Proof of Concept) using HFSS are presented. Microwave measurements on different single crystal and polycrystalline samples (Yttrium Iron Garnet (Y3Fe5O12) YIG and Nickel Ferrite (NiFe2O4) NFO have been performed. We measured the FMR response of these samples as a function of frequency and the data showed the expected variation for both in plane and out of plane magnetic fields

    Ferromagnetic Resonance Measurement Using a Novel Short Circuited Coaxial Probe Technique

    Get PDF
    A versatile technique to characterize the ferromagnetic resonance (FMR) of ferrite samples using a short circuited coaxial probe is presented. The technique has sensitivity comparable to that of well-established methods besides its non-contact nature, broadband and local. Detailed theoretical approach and simulation studies (Proof of Concept) using HFSS are presented. Microwave measurements on different single crystal and polycrystalline samples (Yttrium Iron Garnet (Y3Fe5O12) YIG and Nickel Ferrite (NiFe2O4) NFO have been performed. We measured the FMR response of these samples as a function of frequency and the data showed the expected variation for both in plane and out of plane magnetic fields

    Genetic Analysis Method for Staphylococcus chromogenes Associated with Goat Mastitis

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    Nekada su tvrtke svoje zaposlenike o novostima u poduzeću informirale putem oglasnih ploča, no u današnje vrijeme to se čini putem e-maila ili interneta, a interno komuniciranje čini sve važniji dio odnosa sa javnošću poduzeća. Ono je prisutno u svim organizacijama, bez obzira na veličinu ili predmet poslovanja poduzeća. Međutim, ono se često zanemaruje jer se ne prepoznaje njegova važnost za poduzeće. Osnovni cilj ovoga rada je prikazati značaj interne komunikacije za poduzeća, kao i utjecaj menadžera i rukovoditelja u obavljanju poslova poduzeća. Dolazi se do zaključka da komunikacija između zaposlenika (horizontalna komunikacija) i komunikacija između podređenih i nadređenih (vertikalna komunikacija) u poduzeću utječe na zadovoljstvo i sami rad zaposlenika. Razlog tome je nedostatak informacija koji rezultira u neefikasnom radu zaposlenika, a tim i njihovim nezadovoljstvom. Najznačnije informacije koje se komuniciraju uključuju razna znanja, iskustva te razmjenu podataka značajnih za poslovanje tvrtki i rad njenih djelatnika. U samom radu pojasnit će se djelovanje internog komuniciranja u poduzećima; značaj internog komuniciranja, imidža i strategije za poslovanje poduzeća; problemi internog komuniciranja u poduzećima, a samim tim i dobre strane internog komuniciranja

    Genetic Analysis Method for Staphylococcus chromogenes Associated with Goat Mastitis

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    Mastitis in goats is mainly caused by coagulase-negative Staphylococcus (CNS). The identification methods for this group are based on evaluating the expression of phenotypic characteristics such as the ability to metabolize various substrates; however, this is disadvantageous as these methods are dependent on gene expression. In recent years, genotyping methods such as the Multiple Locus Variable-Number Tandem Repeat Analysis (MLVA) and gene identification have been useful for epidemiological study of several bacterial species. To develop a genotyping method, the genome sequence of Staphylococcus chromogenes MU970 was analysed. The analysis showed nine virulence genes described in Staphylococcus aureus. The MLVA was developed using four loci identified in the genome of S. chromogenes MU970. This genotyping method was examined in 23 strains of CNS isolated from goat mastitis. The rate of discrimination for MLVA was 0.8893, and the highest rates of discrimination per the index of Simpson and Hunter-Gaston were 0.926 and 0.968 for the locus 346_06, respectively. The virulence genes were present in all strains of S. chromogenes but not in other CNS. The genotyping method presented in this paper is a viable and easy method for typifying CNS isolates from mastitis cases in different regions and is an ideal mean of tracking this disease

    Modulated self-assembly of three flexible Cr(III) PCPs for SO2 adsorption and detection

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    Modulated self-assembly protocols are used to develop facile, HF-free syntheses of the archetypal flexible PCP, MIL-53(Cr), and novel isoreticular analogues MIL-53(Cr)-Br and MIL-53(Cr)-NO2. All three PCPs show good SO2 uptake (298 K, 1 bar) and high chemical stabilities against dry and wet SO2. Solid-state photoluminescence spectroscopy indicates all three PCPs exhibit turn-off sensing of SO2, in particular MIL-53(Cr)-Br, which shows a 2.7-fold decrease in emission on exposure to SO2 at room temperature, indicating potential sensing applications

    Six new mexican species of Bernardia (Euphorbiaceae).

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    Six new species of Bernardia from Mexico are described and illustrated. Species are distinguished by a combination of characters such as habit, leaf shape and size, indumentum, venation pattern, gland position, length of staminate inflorescence, number of bracts, number of flowers per bract, size of bracts and tepals, number of stamens, style type, fruit dehiscence, size, pubescence, trichometype, endocarptexture, seedshape, size and ornamentation, raphelength and micropyle position. Bernardia macrocarpa belongs to section Alevia; B. chinantlensis to section Polyboea, which is recorded for the first time in Mexico; B. chiangii, B. mcvaughii, B. rzedowskii and B. valdesii belong to section Tyria, which is the most diverse section in Mexico. With the recognition of these six new species, Mexico becomes the area with the highest diversity for Bernardia

    Paneles y transformación social

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    Video con el que se espera informar sobre las ventajas de la energía solar y la facilidad con la que se pueden adquirir
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