| 1. |
- Bartoszak-Adamska, E, et al.
(författare)
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The influence of (O, N)-deuteration on the crystal and molecular structure, thermal stability and spectroscopic properties of 1,3-propanediammonium hydrogenphosphate monohydrate
- 2000
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Ingår i: POLISH JOURNAL OF CHEMISTRY. - 0137-5083. ; 74:3, s. 393-408
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Tidskriftsartikel (refereegranskat)abstract
- Exchange of mobile hydrogen atoms in 1,3-propanediammonium hydrogenphosphate for deuterium (OH-->OD, NH-->ND) affects the thermal stability of the salt. Additionally, (O,N)-deuteration induces some unexpected changes in the -CH2- vibrations in the IR spec
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| 2. |
- Jonsell, Svante, et al.
(författare)
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Non-adiabatic couplings between the final states of tritium beta decay
- 1998
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Ingår i: Polish Journal of Chemistry. - 0137-5083. ; 72:7, s. 1323-1333
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The non-adiabatic couplings between the ground state and the first 5 excited states in (HeT+)-He-3 have been calculated. Non-adiabatic corrections to the beta-decay spectrum of T-2 are derived in first-order perturbation theory. These corrections are esti
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| 3. |
- Kasprzykowski, F., et al.
(författare)
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Peptidyl diazomethylketones as cysteine protease inhibitors structurally based upon the inhibitory centers of cystatins
- 2001
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Ingår i: Polish Journal of Chemistry. - 0137-5083. ; 75:6, s. 831-837
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Tidskriftsartikel (refereegranskat)abstract
- Six new putative cysteine protease inhibitors based upon sequences of the N-terminal binding fragments of rat cystatin A, bovine cystatin C and human cystatins D and S were synthesized, inhibitory activities of these compounds against papain and bovine cathepsin B were tested. Additionally, agar well diffusion test of their antibacterial activity against Streptococcus pyogenes was performed.
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| 4. |
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| 5. |
- Rouhollahi, A., et al.
(författare)
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Multiwavelength spectrophotometric determination of protolytic constants of 4-(2-pyridylazo)resorcinol (PAR) in binary dioxane + water mixtures
- 2005
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Ingår i: Polish Journal of Chemistry. - 0137-5083. ; 79:8, s. 1251-1263
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Tidskriftsartikel (refereegranskat)abstract
- Acid-base properties of 4-(2-pyridylazo)resorcinol (PAR) in 1,4-dioxane (DX)-water binary mixture were investigated using a multiwavelength spectrophotometric method. The protolytic equilibrium constants, spectral profiles, concentration diagrams and also the number of components have been calculated from the fitting of the pH-absorbance data with appropriate mass balance equations by an established factor analysis model. The binary mixture of water-DX is a good system to study changing in the donating ability and permittivity of mixed solvent components in comparison to each other, considering the fact that variation in the permittivity from pure water to pure DX is 76 units. A linear relationship is observed between pKa's of the PAR molecule and the mole fraction of DX in different solvent mixtures. A glass electrode calibration procedure based on a four-parameter equation aided Gran's method was used to obtain pH readings based on the concentration scale (p cH). It has been observed that there is an inverse relationship between second and third protolytic constants and mole fraction of DX. The effect of the solvent on the protolytic constants was discussed.
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| 6. |
- Urban, S, et al.
(författare)
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Volumetric and dielectric studies on 4-n-pentyl-4 '-cyanobiphenyl (5CB) under high pressure
- 1998
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Ingår i: POLISH JOURNAL OF CHEMISTRY. - : POLISH CHEMICAL SOCIETY. - 0137-5083. ; 72:2, s. 241-250
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The results of measurements of the specific volume V-m versus temperature T and pressure p are presented together with the new results of high pressure dielectric studies of 4-n-pentyl-4'-cyanobiphenyl (5CB) in the nematic and isotropic phase. The knowled
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