Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Ho3+" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 24
Tytuł:
Energy Transfer Mechanisms and Excited State Dynamics of Yb$\text{}^{3+}$, Tm$\text{}^{3+}$ and Ho$\text{}^{3+}$ Doped Gd$\text{}_{3}$Ga$\text{}_{5}$O$\text{}_{12}$ Single Crystals
Autorzy:
Brenier, A.
Courrol, L. C.
Pédrini, C.
Madej, C.
Boulon, G.
Powiązania:
https://bibliotekanauki.pl/articles/1929795.pdf
Data publikacji:
1993-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.55.Nw
78.55.Hx
Opis:
The transfer mechanisms occurring in ytterbium, thulium and holmium doped gadolinium gallium garnet crystals are presented. Various models are used to modelize the up- and down-conversion processes. They lead to a good description of the excited state dynamics and provide information about the efficiencies of the transfers.
Źródło:
Acta Physica Polonica A; 1993, 84, 5; 931-939
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and Transport Properties of La$\text{}_{0.75-x}$RE$\text{}_{x}$Ca$\text{}_{0.25}$MnO$\text{}_{3}$ (RE = Gd, Dy, Ho; 0≤ x≤0.75) Manganites
Autorzy:
Drozd, V.
Pękała, M.
Kovac, J.
Skorvanek, I.
Szymański, M.
Nedilko, S.
Powiązania:
https://bibliotekanauki.pl/articles/2041482.pdf
Data publikacji:
2004-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.47.Lx
71.38.-k
72.20.Ee
75.50.Dd
Opis:
Structure and transport properties have been studied for a series of La$\text{}_{0.75-x}$RE$\text{}_{x}$Ca$\text{}_{0.25}$MnO$\text{}_{3}$ manganites with heavy rare earth ions of Gd, Dy, Ho substituting La with x=0, 0.10, 0.25, 0.50, and 0.75. Polycrystalline samples were prepared by the carbonate precipitation route. The oxygen content was determined by the iodometric titration. The X-ray investigations carried out by the powder method show that the unit cell volume gradually decreases and orthorhombic distortion of the lattice increases with rising RE content. Below the room temperature the electrical resistivity is of the semiconducting type for all the samples studied. Electrical resistivity vs. temperature dependences were analyzed within different models: simple thermal activation, Mott's variable range hopping, adiabatic, nonadiabatic, and bipolaron. The Curie temperatures of Gd, Dy, and Ho substituted manganites determined from magnetization measurements show that at 280 K all the samples are in the paramagnetic phase. The increasing RE fraction reduces magnetization at 4 K as compared to La$\text{}_{0.75}$Ca$\text{}_{0.25}$MnO$\text{}_{3}$.
Źródło:
Acta Physica Polonica A; 2004, 106, 5; 751-758
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Ga$\text{}_{2}$O$\text{}_{3}$ Nanobelts Synthesized by the Thermal Annealing of GaN Powders
Autorzy:
Kim, Hyoun Woo
Kim, Nam Ho
Powiązania:
https://bibliotekanauki.pl/articles/2041772.pdf
Data publikacji:
2005-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
81.05.Hd
Opis:
We synthesized the uniform monoclinic gallium oxide (Ga$\text{}_{2}$O$\text{}_{3}$) nanobelts by a simple thermal annealing of GaN powders. The as-syn-thesized nanobelts were rectangular in cross-sectional shape with width ranging from 100 to 700 nm. The length direction of the nanobelt was along [010]. Photoluminescence measurement under excitation at 325 nm showed that the Ga$\text{}_{ }$2O$\text{}_{3}$ nanobelts had a blue emission at around 454 nm.
Źródło:
Acta Physica Polonica A; 2005, 107, 2; 346-350
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ganoderma lucidum extract stimulates glucose uptake in L6 rat skeletal muscle cells
Autorzy:
Jung, Kyung
Ha, Eunyoung
Kim, Mi-Ja
Uhm, Yoon
Kim, Hye
Hong, Seung-Jae
Chung, Joo-Ho
Yim, Sung-Vin
Powiązania:
https://bibliotekanauki.pl/articles/1041224.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Ganoderma lucidum extract
skeletal muscle
phosphatidylinositol 3-kinase
AMP-activated protein kinase
glucose uptake
Opis:
The effect of Ganoderma lucidum extract on glucose uptake was studied in L6 rat skeletal muscle cells. G. lucidum extract increased glucose uptake about 2-fold compared to control. The extract stimulated the activity of phosphatidylinositol (PI) 3-kinase which is a major regulatory molecule in the glucose uptake pathway. About 7-fold increased activity of a PI 3-kinase was observed after treatment with G. lucidum extract, whereas PI 3-kinase inhibitor, LY294002, blocked the G. lucidum extract-stimulated PI 3-kinase activity in L6 skeletal muscle cells. Protein kinase B, a downstream mediator of PI 3-kinase, was also activated by G. lucidum extract. We then assessed the activity of AMP-activated protein kinase (AMPK), another regulatory molecule in the glucose uptake pathway. G. lucidum extract increased the phosphorylation level of both AMPK α1 and α2. Activity of p38 MAPK, a downstream mediator of AMPK, was also increased by G. lucidum extract. Taken together, these results suggest that G. lucidum extract may stimulate glucose uptake, through both PI 3-kinase and AMPK in L6 skeletal muscle cells thereby contributing to glucose homeostasis.
Źródło:
Acta Biochimica Polonica; 2006, 53, 3; 597-601
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A proof of the crossing number of $K_{3,n}$ in a surface
Autorzy:
Ho, Pak
Powiązania:
https://bibliotekanauki.pl/articles/743447.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
crossing number
bipartite graph
surface
Opis:
In this note we give a simple proof of a result of Richter and Siran by basic counting method, which says that the crossing number of $K_{3,n}$ in a surface with Euler genus ε is
⎣n/(2ε+2)⎦ {n - (ε+1)(1+⎣n/(2ε+2)⎦)}.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 3; 549-551
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scattering Processes of Normal and Fluctuating Carriers in ReBa$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{7-δ}$ (Re = Y, Ho) Single Crystals with Unidirectional Twin Boundaries
Autorzy:
Vovk, R. V.
Obolenskii, M. A.
Bondarenko, A. V.
Goulatis, I. I.
Levy, M. R.
Chroneos, A.
Powiązania:
https://bibliotekanauki.pl/articles/2047234.pdf
Data publikacji:
2007-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Eh
72.10.-d
74.40.+k
74.72.-h
Opis:
The effect of twin boundaries on the normal and fluctuating conductivity of ReBaCuO (Re = Y, Ho) single crystals was investigated. The results indicate that the Lawrence-Doniach theoretical model describes adequately the temperature dependence of the excess conductivity. The twin boundaries are efficient scattering centers for normal and fluctuating carriers. The derived values of the coherence length perpendicular to the ab-planeξ$\text{}_{c}$(0) are in good agreement with those obtained from magnetic measurements for stoichiometric YBaCuO crystals.
Źródło:
Acta Physica Polonica A; 2007, 111, 1; 123-128
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complex Magnetic Behaviour of $Ho_3Cu_4X_4$ Compounds (X = Si and Sn)
Autorzy:
Gondek, Ł.
Szytuła, A.
Prokhnenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/1813174.pdf
Data publikacji:
2008-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.25.+z
75.50.Ee
75.40.Cx
Opis:
Ternary $Ho_3Cu_4X_4$ compounds exhibit very complex magnetic phase diagrams. The rare earth ions occupy two non-equivalent crystal positions. Within both magnetic sublattices, magnetic moments exhibit different magnetic ordering temperatures. Moreover, in light of our results, it seems that both sublattices are weakly coupled between each other. This may be observed as independent changes of propagation vectors etc. The major difference of ordering temperatures between both compounds is likely related to substantial change of interatomic distances. Consequently, completely different crystalline electric field effects are observed.
Źródło:
Acta Physica Polonica A; 2008, 113, 4; 1179-1184
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local Structure of Mn in $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ Studied by X-ray Absorption Fine Structure
Autorzy:
Pietnoczka, A.
Pękała, M.
Bacewicz, R.
Drozd, V.
Fagnard, J.
Vanderbemden, P.
Antonowicz, J.
Zalewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/1538864.pdf
Data publikacji:
2010-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.cj
75.47.Lx
87.64.kd
Opis:
Results of X-ray absorption fine structure measurements in manganites $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ with 0.15 < x < 0.50 are presented. When $LaMnO_{3}$ is doped with a divalent element such as $Ca^{2+}$, substituting for $La^{3+}$, holes are induced in the filled Mn d orbitals. This leads to a strong ferromagnetic coupling between Mn sites. Ca ions in $La_{1-x}Ca_{x}MnO_{3}$ introduce a distortion of the crystal lattice and mixed valence Mn ions ($Mn^{3+}$ and $Mn^{4+}$). On the other hand, in manganites $(La_{1-x}Ho_{x})_{2//3}Ca_{1//3}MnO_{3}$ the substitution of La for Ho causes a lattice distortion and induces a disorder, which reduces a magnetic interaction. The ferromagnetic transition temperature and conductivity decrease very quickly with increasing x. The magnetic and transport properties of compounds depend on the local atomic structure around Mn ions. The information on the bond lengths and Debye-Waller factor are obtained from the extended X-ray absorption fine structure (EXAFS) data analysis. The charge state of Mn is determined from the position of the absorption edge in X-ray absorption near edge structure (XANES) data. XAFS results are in good agreement with magnetic characteristics of the studied materials.
Źródło:
Acta Physica Polonica A; 2010, 117, 2; 281-285
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
2.1 žm emission of Tm3+/Ho3+ - doped antimony-silicate glasses for active optical fibre
Autorzy:
Żmojda, J.
Dorosz, D.
Dorosz, J.
Powiązania:
https://bibliotekanauki.pl/articles/200143.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antimony-silicate glasses
Tm3+/Ho3+ glasses
active optical fibre
Opis:
Tm3+/Ho3+ – doped antimony-silicate optical fibre with 2.1 ěm emission has been presented. Luminescence corresponding to 5I7 --> 5I8 transition in holmium was obtained by energy transfer between Tm3+ and Ho3+ ions. The analysis of the luminescence mechanism showed a significant influence of the glass composition (low phonon content) on the emission intensity. Optimization of the active elements content, presented in the paper, allowed to indicate that a strong emission intensity at 2 ěm in the fabricated glasses was obtained for the molar composition of 1% Tm2O3 : 0.75% Ho2O3. According to the F¨orster-Dexter theory, the efficiency of energy transfer of the 3F4 (Tm3+) --> 5I7 (Ho3+) transition was calculated. Moreover, it was found that the full width at half maximum (FWHM) of luminescence in the range of 1.6 – 2.2 ěm strongly depends on the Tm3+/Ho3+ ratio. The optimization of Tm3+/Ho3+ transfer in antimony-silicate glasses allowed to fabricate optical fibre with narrowing and red-shifting of emission at 2.1 ěm.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 381-387
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comments on “3-aminopropyltriethoxysilane functionalized nanoscale zero-valent iron for the removal of dyes from aqueous solution”
Autorzy:
Ho, Y. S.
Powiązania:
https://bibliotekanauki.pl/articles/779896.pdf
Data publikacji:
2011
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Źródło:
Polish Journal of Chemical Technology; 2011, 13, 4; 89-89
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
$Tm^{3+}//Ho^{3+}$-Doped ASE Fibre Source for Mid-Infrared Sensor Applications
Autorzy:
Dorosz, D.
Żmojda, J.
Kochanowicz, M.
Miluski, P.
Dorosz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1418068.pdf
Data publikacji:
2012-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.81.-i
42.79.Ag
33.20.Kf
Opis:
The infrared emission of $Tm^{3+}//Ho^{3+}$-doped antimony-silicate optical fiber has been presented. Luminescence at 2.1 μm corresponding to ⁵I₇ → ⁵I₈ transition in holmium was obtained by energy transfer between $Tm^{3+}$ and $Ho^{3+}$ ions. According to the Förster-Dexter theory, the efficiency of energy transfer of the $\text{}^3 F_4 (Tm^{3+}) \rightarrow \text{}^5 text{|}_7 (Ho^{3+})$ transition was calculated. The optimization of the activator content and the donor $(Tm^{3+})$/acceptor $(Ho^{3+})$ ions concentration ratio were conducted with the purpose of maximizing the efficiency of energy transfer. It made possible to select best-suited glass which was used to manufacture double-clad optical fiber. Strong and narrow bands of amplified spontaneous emission which formed as a result of energy transfer between thulium and holmium ions were observed in the fiber under exciting with radiation at 795 nm wavelength.
Źródło:
Acta Physica Polonica A; 2012, 122, 5; 927-932
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The projective plane crossing number of the circulant graph C(3k;{1,k})
Autorzy:
Ho, Pak
Powiązania:
https://bibliotekanauki.pl/articles/743680.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
crossing number
circulant graph
projective plane
Opis:
In this paper we prove that the projective plane crossing number of the circulant graph C(3k;{1,k}) is k-1 for k ≥ 4, and is 1 for k = 3.
Źródło:
Discussiones Mathematicae Graph Theory; 2012, 32, 1; 91-108
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
White Upconversion in $Yb^{3+}//Tm^{3+}//Ho^{3+}$ Co-Doped Antimony-Germanate Glasses
Autorzy:
Żmojda, J.
Dorosz, D.
Kochanowicz, M.
Miluski, P.
Dorosz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1399412.pdf
Data publikacji:
2013-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.81.-i
42.79.Ag
33.20.Kf
42.25.Bs
Opis:
In the paper the spectroscopic properties of antimony-germanate glass co-doped with $Yb^{3+}//Ho^{3+}$ has been investigated. Fabricated $Yb^{3+}//Tm^{3+}/Ho^{3+}$ co-doped glass is characterised by the emission of simultaneous multicolour upconversion luminescence. Strong blue $\text{}^{1}G_{4} \rightarrow \text{}^{3}H_{6}(Tm^{3+})$, green $\text{}^{5}F_{4} \rightarrow \text{}^{5}I_{8}(Ho^{3+})$ and red $\text{}^{5}F_{5} \rightarrow \text{}^{5}I_{8}(Ho^{3+})$ upconversion emission bands have been measured under 976 nm excitation at room temperature. Influence of molar ratio of active ions and excitation power on the colour coordinates (CIE-1931) have been investigated.
Źródło:
Acta Physica Polonica A; 2013, 124, 3; 598-601
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gomer – antyideał żony czy wzorcowa metafora relacji oblubieńczej na podstawie Hieronimowego Komentarza do Oz 1-3?
Gomer – the anti-ideal of wife or the model metaphor of bride’s relation on the basis of st. Jerome’s Comment on Ho 1-3?
Autorzy:
Jóźwiak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/612149.pdf
Data publikacji:
2016
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Św. Hieronim
Komentarz do Ozeasza
Gomer
St. Jerome
A Commentary on the Book of Hosea
Opis:
In this article we included St. Jerome’s standpoint on Gomer - the prostitute and wife of Hosea. This topic was presented in two stages. First, we analysed an issue of ideal woman according to St. Jerome. Then we presented a picture of Gomer in St. Jerome’s comment on the Book of Hosea 1–3. The main point of this article was an attempt to answer a question how St. Jerome deals with conveying the biblical meaning, according to which the prophet on God’s command marries an adulterous woman. This issue is very interesting, because the author of Vulgate had rather unfavourable attitude towards the institution of marriage and Gomer was not only married, but also a prostitute.
Źródło:
Vox Patrum; 2016, 66; 169-178
0860-9411
2719-3586
Pojawia się w:
Vox Patrum
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 24

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies