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Wyszukujesz frazę "Haranczyk, H." wg kryterium: Autor

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    Wyświetlanie 1-13 z 13
    Tytuł:
    Liquid Phase Contained in Porous Rock as Observed by Proton Magnetic Relaxation
    Autorzy:
    Harańczyk, H.
    Wójcik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014116.pdf
    Data publikacji:
    2000-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.60.Es
    81.05.Rm
    Opis:
    High power proton relaxometry was applied to investigate the liquid phase contained in porous rock. Proton free induction decays and spin-lattice relaxation times allowed us to investigate the pore distribution and the contribution of mobile and of immobilized liquid. The differences in pore distributions in oil-containing limestone and in Węglowicki sandstone were found. The fractal exponent for pore distribution in Węglowicki sandstone was fitted using both stretched exponential and modified stretched exponential models. The results of both approaches are compared.
    Źródło:
    Acta Physica Polonica A; 2000, 98, 1-2; 153-161
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bound Water Structure on the Surfaces of Usnea antarctica as Observed by NMR and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Pietrzyk, A.
    Leja, A.
    Olech, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044769.pdf
    Data publikacji:
    2006-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    87.16.Dg
    Opis:
    Hydration courses and proton free induction decays are recorded at 30 MHz for Usnea antarctica thalli hydrated from gaseous phase. NMR data combined with gravimetry allow one to distinguish two fractions of tightly bound water, and loosely bound/free water pool. No water fraction "sealed" in thallus structures is present in U. antarctica.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 3; 411-416
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Water Accessible Paramagnetic Ions on Subcellular Structures Formed in Developing Wheat Photosynthetic Membranes as Observed by NMR and by Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Leja, A.
    Strzałka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044747.pdf
    Data publikacji:
    2006-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    87.16.Dg
    Opis:
    The rehydration from the gaseous phase of the developing native or EDTA-washed from unbound and loosely bound paramagnetic ions wheat thylakoid membrane lyophilizate was investigated using hydration kinetics, sorption isotherm, and high power proton relaxometry. Hydration time courses are single exponential for all target humidities. The sorption isotherm is well fitted by the Dent model, with the mass of water saturating primary binding sites equal toΔ M/m$\text{}_{ }$0=0.024 and 0.017 for native and EDTA-washed membranes, respectively. Proton free induction decays distinguish: (i) a Gaussian component, S$\text{}_{0}$, coming from protons of solid matrix of lyophilizate; (ii) a Gaussian component, S$\text{}_{1}$, from water bound to the primary water binding sites in proximity of water accessible paramagnetic ions; (iii) an exponentially decaying contribution, $L$\text{}_{1}$$, from water tightly bound to lyophilizate surface; and (iv) exponentially decaying loosely bound water pool, L$\text{}_{2}$. Sorption isotherm fitted to NMR data shows a significant contribution of water "sealed" in membrane structures (Δ M$\text{}_{s}$/m$\text{}_{0}$=0.052 for native and 0.061 for EDTA-washed developing membranes, respectively).
    Źródło:
    Acta Physica Polonica A; 2006, 109, 3; 389-398
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deep Dehydration of Antarctic Lichen Leptogium puberulum Hue Observed by NMR and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Bacior, M.
    Jastrzębska, P.
    Olech, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808577.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    Hydration kinetics, sorption isotherm, and proton free induction decays are measured for Leptogium puberulum Hue thalli hydrated from gaseous phase. Very tightly, tightly and loosely bound water fraction are distinguished. The hydration dependence of mobile NMR signal component is non-linear and fitted well by rational function, which suggest the presence of water soluble solid (presumably carbohydrate) fraction in thallus structures of L. puberulum.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 516-520
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Maturation Process of Photosynthetic Membranes Observed by Proton Magnetic Relaxation and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Leja, A.
    Jemioła-Rzemińska, M.
    Strzałka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808579.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    Mild rehydration from the gaseous phase of the developing and mature lyophilized wheat photosynthetic membranes was investigated using hydration kinetics, adsorption isotherm and high power proton relaxometry. Hydration time courses are single exponential for all target air humidities; the hydration time $t^h$ equals to (11.9±3.6) h for the mature membranes, and (17.0±3.2) h for the developing membranes. The sorption isotherm is sigmoidal in form and well fitted using the Dent model; the mass of water saturating primary binding sites equals Δ M/$m_0$= 0.033±0.013 and 0.025±0.007 for the mature and for the developing membranes, respectively, where $m_0$ is the dry mass of the sample, and Δ M is mass of water taken up. Proton free induction decays distinguish: (i) an immobilized proton (Gaussian) component, $S_0$, originating from protons of solid matrix of lyophilizate; (ii) a Gaussian component, $S_1$, from water bound to the primary water binding sites and localized in proximity of paramagnetic ions; (iii) an exponentially decaying contribution, $L_1$, from water tightly bound to lyophilizate surface; and (iv) exponentially decaying loosely bound water pool, $L_2$. A significant contribution of water "sealed" in the structure of lyophilized membrane (from the fraction $S_1$ and $L_1$) is detected. The mass of "sealed" water fraction is Δ $M_{S}//m_0$ = 0.047±0.023 and 0.072±0.021 for the mature and for the developing membranes, respectively.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 526-532
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rehydration of Digalactosyldiacylglycerol Model Membrane Lyophilizates Observed by NMR and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Bacior, M.
    Jamróz, J.
    Jemioła-Rzemińska, M.
    Strzałka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1808578.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    The initial stages of rehydration of digalactosyldiacylglycerol model membrane lyophilizates were observed using hydration kinetics, sorption isotherm, and high power proton relaxometry (at 30 MHz). Hydration time courses are single exponential and the sorption isotherm is sigmoidal in form. The mass of water saturating primary binding sites equals Δ M/$m_0$= 0.019±0.001. Proton free induction decays distinguish (i) immobilized protons of solid matrix of lyophilizate, signal $S_0$; (ii) protons of water fraction tightly bound to the lyophilizate surface, $L_1$; and (iii) mobile protons of loosely bound water pool, $L_2$. Hydration dependence of total water signal $(L_1+L_2)//S_0$ shows the presence of water fraction "sealed" in liposome structures, which equals $Δ M_{S}//m_0$ = 0.092±0.007.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 521-525
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Initial Phases of DNA Rehydration by NMR and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Czak, J.
    Nowak, P.
    Nizioł, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1539094.pdf
    Data publikacji:
    2010-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    T*he initial stages of rehydration of salmon sperm deoxyribonucleic acid (DNA) lyophilizates were observed using hydration kinetics, sorption isotherm, and high power proton relaxometry (at 30 MHz). T*he hydration kinetics reveals (i) a very tightly bound water not removed by incubation over silica gel ($A_0^{h}$ = 0.057 ± 0.010), (ii) a tightly bound water [saturating at $A_1^{h}$ = 0.149 ± 0.007, hydration time $t_1^{h}$ = (0.27 ± 0.08) h], a tightly bound water (iii) [saturating at $A_2^{h}$ = 0.694 ± 0.039, with the hydration time $t_2^{h}$ = (9.8 ± 3.2) h], and (iv) a loosely bound water fraction for the samples hydrated at p/$p_{0}$ ≥ 76% [with the hydration time $t_3^{h}$ = (44 ± 14) h, and the contribution progressively increasing with the air humidity]. For the hydration at p/$p_{0}$ = 100%, after $t_{0}$ = (244 ± 22) h of incubation the swelling process begins. T*he amount of additional water uptake at swelling depended on the macrostructure of the sample. Sorption isotherm is sigmoidal in form and is fitted well by the Dent model with the mass of water saturating primary binding sites Δ M/$m_{0}$ = 0.114. Proton free induction decay is a superposition of the immobilized proton signal (Gaussian, with $T_{2S}^\ast$ ≈ 20 μs) and two liquid signal components coming from tightly bound ($T_{2L_1}^\ast$ ≈ 100 μs, with the mass saturating at Δ m/$m_{0}$ = 0.111 ± 0.044) and loosely bound water fraction (with the amplitude proportional to the mass of water added).
    Źródło:
    Acta Physica Polonica A; 2010, 117, 2; 397-402
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Initial Phases of Antarctic Ramalina terebrata Hook f. & Taylor Thalli Rehydration Observed by Proton Relaxometry
    Autorzy:
    Harańczyk, H.
    Pater, Ł.
    Nowak, P.
    Bacior, M.
    Olech, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490119.pdf
    Data publikacji:
    2012-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    Hydration kinetics, sorption isotherm, and proton free induction decays are measured for Ramalina terebrata thalli rehydrated from gaseous phase. Very tightly, tightly, and loosely bound water fractions are distinguished. Sorption isotherm is sigmoidal in form with the mass of water saturating primary water binding sites equal to Δ m/$m_0$ = 0.046. Proton free induction decays show the presence of immobilized water fraction ($T_{2 L_1}$* ≈ 100 μs) and mobile water pool ($T_{2 L_2}$* ≈ 330 μs). Sorption isotherm fitted to the NMR data shows the absence of water fraction "sealed" in pores of dry thallus.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 2; 480-484
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rehydration of CTMA Modified DNA Powders Observed by NMR
    Autorzy:
    Harańczyk, H.
    Kobierski, J.
    Zalitacz, D.
    Nowak, P.
    Romanowicz, A.
    Marzec, M.
    Nizioł, J.
    Hebda, E.
    Pielichowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490149.pdf
    Data publikacji:
    2012-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    The rehydration of salmon sperm deoxyribonucleic acid (DNA) and cetyltrimethylammonium chloride $(C_{19}H_{42}ClN)$ complexes was observed using hydration kinetics, sorption isotherm, and high power proton relaxometry (at 30 MHz). The hydration kinetics shows (i) a very tightly bound water not removed by incubation over silica gel ($A_0^{h}$ = 0.061 ± 0.004), (ii) a tightly bound water saturating at $A_1^{h}$ = 0.039 ± 0.011, with the hydration time $t_1^{h}$ = (1.04 ± 0.21) h, a loosely bound water fraction (iii) with the hydration time $t_2^{h}$ = (19.1 ± 3.2) h and the contribution progressively increasing with the air humidity. For the hydration at $p//p_0$ = 100%, after $t_0$ = (152.6 ± 2.5) h of incubation the swelling process begins. The swelling time was $t_3^{h}$ = (12.5 ± 5.4) h, and the swelling amplitude $A_3^{h}$ = 0.140 ± 0.016. The sorption isotherm is sigmoidal in form and is fitted by the Dent model with the mass of water saturating primary binding sites Δ M/$m_0$ = 0.102 ± 0.021. Proton free induction decay is a superposition of the immobilized proton signal (Gaussian, with $T_{2S}$* ≈ 30 μs) and two liquid signal components coming from tightly bound ($T_{2 L_1}$* ≈ 100 μs) and loosely bound water fraction with the amplitude proportional to the mass of water added ($T_{2 L_2}$* ≈ 1000 μs).
    Źródło:
    Acta Physica Polonica A; 2012, 121, 2; 485-490
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water Bound in Elytra of the Weevil Liparus glabrirostris (Küster, 1849) by NMR and Sorption Isotherm (Coleoptera: Curculionidae)
    Autorzy:
    Harańczyk, H.
    Florek, M.
    Nowak, P.
    Knutelski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490163.pdf
    Data publikacji:
    2012-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    Opis:
    Scanning electron microscopy micrograms of the elytra of Liparus glabrirostris showed a different dorsal and ventral surface and a multilayered inner structure. Hydration kinetics, sorption isotherm, and proton free induction decays are measured for hydrated elytra of the weevil species Liparus glabrirostris (Coleoptera: Curculionidae) in the atmosphere with controlled humidity. Very tightly bound water fraction with the mass Δ m/$m_0$ = 0.037 ± 0.004, and very short hydration time, tightly bound water Δ m/$m_0$ = 0.034 ± 0.009, and hydration time $t_1^{h}$ = (3.31 ± 0.93) h, and finally loosely bound water fraction with $t_2^{h}$ = (25.5 ± 7.8) h were distinguished. The sorption isotherm is sigmoidal in form, with the mass of water saturating primary water binding sites equal of Δ M/$m_0$ = 0.036. The proton free induction decays show the presence of solid signal (well fitted by a Gaussian function) from elytra ($T_{2G}$* ≈ 18 μs), the immobilized water fraction ($T_{2L_1}$* ≈ 120 μs) and mobile water pool ($T_{2 L_2}$* ≈ 300 μs). The hydration dependence of the water bound in elytra of L. glabrirostris, L/S is linear showing the absence of water-soluble solid fraction and negligible content of water pool "sealed" in pores of the structure.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 2; 491-496
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jak ochotki afrykańskie radzą sobie z niedoborem wody?
    Autorzy:
    Knutelski, S.
    Baran, E.
    Haranczyk, H.
    Strzalka, K.
    Okuda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/847325.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Przyrodników im. Kopernika
    Tematy:
    owady
    ochotkowate
    Chironomidae
    Polypedilum vanderplanki
    cykl zyciowy
    larwy
    desykacja
    anhydrobioza
    procesy fizjologiczne
    stres wodny
    akwaporyny
    bialka szoku termicznego
    bialka LEA
    trehaloza
    Źródło:
    Wszechświat; 2014, 115, 10-12
    0043-9592
    Pojawia się w:
    Wszechświat
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydratacja wybranych lipidowych kompleksów DNA
    Hydration properties of selected DNA-lipid complexes
    Autorzy:
    Nizioł, J.
    Kobierski, J.
    Harańczyk, H.
    Zalitacz, D.
    Hebda, E.
    Pielichowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/947030.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    DNA
    lipidowe kompleksy DNA
    biopolimery
    izoterma sorpcyjna
    hydratacja
    DNA-lipid complex
    biopolymers
    sorption isotherm
    hydration
    Opis:
    Zbadano dwa modelowe kompleksy lipidowe DNA z surfaktantami zawierającymi jeden (CTMA) lub dwa (DDCA) łańcuchy alifatyczne. Wyznaczono kinetykę ich hydratacji oraz izotermę sorpcyjną. Wykazano, że zastosowanie lipidowego surfaktantu z udziałem dwóch łańcuchów alifatycznych ogranicza liczbę cząsteczek wody trwale związanej z helisą DNA.
    Two model DNA-lipid complexes with the surfactants containing single (CTMA) or double (DDCA) aliphatic chains were investigated. Hydration kinetics and sorption isotherms were determined. The data were interpreted using BET and Dent sorption isotherm models. It was found that the use of lipid surfactant with double aliphatic chain reduce the number of water molecules tightly and permanently bound to DNA helix.
    Źródło:
    Polimery; 2015, 60, 1; 18-25
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Mild Rehydration on Freeze-Dried Dipalmitoylphosphatidylcholine (DPPC) Multilamellar Membranes as Observed by Proton NMR and Sorption Isotherm
    Autorzy:
    Harańczyk, H.
    Leja, A.
    Nowak, P.
    Baran, E.
    Strzałka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398809.pdf
    Data publikacji:
    2016-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.56.Na
    87.16.D-
    Opis:
    Between neighbouring bilayers of lyophilized dipalmitoylphosphatidylcholine (DPPC) multilamellar vesicles the total number of water molecules equals 9 H₂O molecules/1 DPPC molecule. One of these molecules is very tightly bound to the lipid molecule, seven are in immobilized (tightly bound) water fraction whereas the last one belongs to mobile water fraction. The rehydration from the gaseous phase of the DPPC model membranes was investigated using hydration kinetics, sorption isotherm, and high power proton relaxometry. The obtained data for DPPC were compared with these obtained for wheat photosynthetic membranes. Rehydrated photosynthetic membranes differ from DPPC model membranes in hydration kinetics. The average hydration time has a similar value: (22.0 ± 2.8) h (photosynthetic membrane) and (19.8 ± 1.6) h (DPPC), however hydration kinetics was described by one-exponential function for photosynthetic membrane, while for model membrane it shows fine double exponential form. The sigmoidal form of sorption isotherm is better fitted using Dent model than by the Brunauer-Emmett-Teller formula. The Brunauer-Emmett-Teller/Dent deviation parameter b =0.93 either for photosynthetic or for model membranes. The mass of water saturating primary water binding sites equals ΔM/m₀= 0.017 (wheat photosynthetic membranes) and 0.027 (DPPC). The detected by NMR-isotherm study mass of water "sealed" in model membrane structures was about ΔMₛ/m₀=0.182 (about 7-8 H₂O molecules/1 DPPC molecule), and ΔMₛ/m₀= 0.066 for photosynthetic membrane.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 2; 179-184
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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