Browsing by Research field "N 003 - Chemija / Chemistry"

Now showing items 1-20 of 458

    • 1- hidroksipireno peroksidazinės oksidacijos tyrimas 

      Ivanec-Goranina, Rūta; Kulys, Juozas (Bioinžinerija ir bioinformatika (2007 m. balandžio 5 d.). Fizika ir fizinė kompiuterija (2007 m. balandžio 6 d.): 10-osios Lietuvos jaunųjų mokslininkų konferencijos "Mokslas - Lietuvos ateitis" medžiaga, 2007)
      The oxidation of 1-hydroxypyrene (1-HP) catalyzed with re combinant Coprinus cinereus (rCiP) peroxidase was investigated. The high fluorescence quantum yield (Of = 0.66) for 1-HP and the high bimolecular constant of 1-HP ...

    • 1-hidroksibenzotriazolo ir N-hidroksiftalimido oksidacija katalizuojama Polyporus pinsitus lakaze 

      Mauzaitė, Laima; Vidžiūnaitė, Regina; Kulys, Juozas (Bioinžinerija ir bioinformatika (2007 m. balandžio 5 d.). Fizika ir fizinė kompiuterija (2007 m. balandžio 6 d.): 10-osios Lietuvos jaunųjų mokslininkų konferencijos "Mokslas - Lietuvos ateitis" medžiaga, 2007)
      The oxidation of 1-hydroxybenzotriazole (HBT) and N-hydroxyphthalimide (NHPI) was investigated in presence of recombinant Polyporus pinsitus laccate (rPpL). Kinetic measurements were performed by using specthotometric ...

    • 17-4 PH stainless-steel as a material for high resolution laser metal deposition 

      Steponavičiūtė, Ada; Selskienė, Aušra; Stravinskas, Karolis; Borodinas, Sergejus; Mordas, Genrik (Materials today: Proceedings: International Conference on Advances in Mechanical Engineering: Transcending Boundaries-2021, 2022)
      Additive manufacturing (AM) is a type of manufacturing technologies whereby the material is added a layer upon layer to produce a 3D object. Produced 3D parts are applied in such industry sectors as space, aviation, ...

    • 210PB savitojo aktyvumo pasiskirstymo Lietuvos dirvožemyje ypatumai 

      Daškevič, Eva; Druteikienė, Rūta (4-osios Lietuvos jaunųjų mokslininkų konferencijos "Lietuva be mokslo-Lietuva be ateities", įvykusios 2001 m. balandžio 23 d. , medžiaga : chemija ir medžiagotyra, 2001)
      The article presents a part of the material, obtained during the research of the Baltic Sea beach soil and forest mosses. The aim of the work is to analyze the distribution of the 210PB concentration in 0.5 cm soil layer ...

    • 9H-Karbazol-2-olio panaudojimas naujų organinių fotopuslaidininkių sintezei 

      Daškevičienė, Marytė; Bubnienė, Giedrė; Stanišauskaitė, Albina; Jankauskas, V.; Sidaravičius, Jonas (Organinė chemija = Organic chemistry : mokslinės konferencijos pranešimų medžiaga / Kauno technologijos universitetas, 2008)
      New compounds with carbazolyl moieties and diphenylvinyl groups were synthesized and investigated. The hole transporting materials are suitable for use in electrophotography.

    • A comparison of some thermodynamic quantities for hydrocarbons and mercaptans 

      Birmantas, Jonas; Laukaitis, Antanas; Blynas, Juozas Justinas (Chemija, 2002)
      Empirical equations were derived for determining the dependency of formation enthalpy,entropy and heat capacity on the number of carbon atoms present in the molecule for hydracarbons and mercaptans. It was shown that ...

    • A minimal model of haemoglobin oxygenation kinetics 

      Juška, Alfonsas (Biologija, 2004)
      A mathematical model based on the current understanding of cooperativity in oxygen binding to haemoglobin and relating the saturation curve of haemoglobin oxygenation to dissociation constants characterizing the affinities ...

    • A minimal model of non-hyperbolic enzyme and receptor kinetics 

      Juška, Alfonsas (Biochemical and Biophysical Research Communications, 2003)
      A simplified version of P.W. Kühl's Recovery Model [Biochem. J. 298 (1994) 171–180] has been developed in which the duration of the recovery phase of receptor or enzyme (macro)molecule was assumed to be a random value ...

    • A new experimental model for neuronal and glial differentiation using stem cells derived from human exfoliated deciduous teeth 

      Jarmalavičiūtė, Akvilė; Tunaitis, Virginijus; Strainienė, Eglė; Aldonytė, Rūta; Ramanavičius, Arūnas; Venalis, Algirdas; Magnusson, Karl-Eric; Pivoriūnas, Augustas (Journal of molecular neuroscience, 2013)
      Stem cells isolated from human adult tissues represent a promising source for neural differentiation studies in vitro. We have isolated and characterized stem cells from human exfoliated deciduous teeth (SHEDs). These ...

    • A red-emitting thiophene-modified BODIPY probe for fluorescence lifetime-based polarity imaging of lipid droplets in living cells 

      Žvirblis, Rokas; Maleckaitė, Karolina; Dodonova-Vaitkūnienė, Jelena; Jurgutis, Džiugas; Žilėnaitė, Rugilė; Karabanovas, Vitalijus; Tumkevičius, Sigitas; Vyšniauskas, Aurimas (Journal of materials chemistry B, 2023)
      Intracellular polarity in lipid droplets as well as other organelles may provide useful knowledge about various processes taking place in live cells. Therefore, small fluorophores capable of visualising polarity are ...

    • A series of new luminescent non-planar 1,8-naphthyridine derivatives giving coloured and close-to-white electroluminescence spectra 

      Urbanavičiūtė, Indrė; Višniakova, Sigita; Dirsytė, Justina; Juška, Giedrius; Lenkevičiūtė-Vasiliauskienė, Bronė; Bužavaitė, Ernesta; Žilinskas, Albinas; Arlauskas, Kęstutis (Journal of luminescence, 2017)
      We report a synthesis of 37 new 1,8-naphthyridine based compounds having a non-planar bicyclic moiety (bicyclo[3.3.1]nonane, bicyclo[3.3.0]octane and camphor). We measured energetic characteristics (EHOMO=[−5.9; −5.4] eV, ...

    • A thermodynamic investigation of pentanethiol pyrolysis reaction 

      Birmantas, Jonas; Laukaitis, Antanas; Blynas, Juozas Justinas (Chemija, 2002)
      The most reliable pentanethiol pyrolysis reaction product formation probabilities were investigated when hydrogen sulfide , lower molecular mass thiols and sulfur were evolved. It was found that up to 850 K the most reliable ...

    • Adsorption of volatile organic compounds on regenerated activated carbon 

      Blynas, Juozas Justinas; Stankus, G. (Chemija 2005 : Lietuvos 7-oji chemikų konferencija, skirta prof. K. Daukšo 100 metų sukakčiai : pranešimų tezės, Vilnius, vasario 25 d., 2005, 2005)

    • Alcohol oxidase from the yeast Pichia pastoris – a potential catalyst for organic synthesis 

      Dienys, Gervydas; Jarmalavičius, Saulius; Budrienė, Saulutė; Čitavičius, Donaldas Jonas; Sereikaitė, Jolanta (Journal of molecular catalysis B : Enzymatic, 2003)
      Alcohol oxidase (AO) from the methylotropic yeast Pichia pastoris was isolated and investigated. Wide substrate specificity is characteristic for this enzyme. Unbranched primary alcohols are effectively oxidized by AO to ...

    • Alkohoksidazė iš mielių Pichia pastoris. Gryninimas ir savybės 

      Gumbytė, Milda; Michailovienė, V; Dienys, G. (Bioinžinerija ir bioinformatika (2006 m. balandžio 6 d.). Fizika ir fizinė kompiuterija (2006 m. balandžio 7 d.): 9-osios Lietuvos jaunųjų mokslininkų konferencijos "Mokslas - Lietuvos ateitis" medžiaga, 2006)
      Šiame darbe buvo parinkta AO gryninimo schema: biomasės suardymas, centrifugavimas, pašalinių baltymų išsodinimas amonio sulfatu ir jonų - mainų chromatografija. Po chromatografinio gryninimo SDS - PAGE elektoforezėje ...

    • Alternating current susceptibility and magnetisation of nanocrystalline Co2MnSi Heusler alloy films 

      Vengalis, Bonifacas; Maneikis, Andrius; Grigaliūnaitė-Vonsevičienė, Gražina; Juškėnas, Remigijus; Selskis, Algirdas (Lithuanian journal of physics, 2020)
      The Co2MnSi (CMS) Heusler alloy films with thickness d = 90 ÷ 110 nm were grown by DC magnetron sputtering on both nonheated and heated Si(100) and MgO(100) substrates. The films grown (annealed) at T ≥ 400°C demonstrated ...

    • Alternatyvaus SAGE metodo optimizacija 

      Žilytė, Jūra (7-osios Lietuvos jaunųjų mokslininkų konferencijos "Lietuva be mokslo- Lietuva be ateities" medžiaga : bioinžinerija ir bioinformatika (2004 m. balandžio 15 d.). Fizika ir fizinė kompiuterija (2004 m. balandžio 16 d.), 2004)

    • Amperometric immunosensor for diagnosis of BLV infection 

      Kurtinaitienė, Bogumila; Vasiliauskienė, Dovilė; Laurinavičius, Valdas Stanislovas; Ramanavičienė, Almira; Ramanavičius, Arūnas (Biosensors & bioelectronics, 2008)
      A new amperometric immunosensor for detection of antibodies against bovine leukemia protein (gp51) was designed. The detection of antibody-antigen complex formation was based on application of secondary antibodies labeled ...

    • An experimental and theoretical study of Coprinus cinereus peroxidase-catalyzed biodegradation of isoelectronic to dioxin recalcitrants 

      Žiemys, Artūras; Kulys, Juozas (Journal of molecular catalysis B : Enzymatic, 2007)
      Isoelectronic to dibenzo-p-dioxin (DBD) compounds (ID) containing nitrogen and/or sulfur atom instead of oxygen atom can be oxidized in the presence of fungal peroxidase. To elucidate the structure/activity relationship ...

    • Analysis and modification of nonhyperbolic kinetic models 

      Juška, Alfonsas (International journal of chemical kinetics : John Wiley & Sons INC, 2008)
      A nonhyperbolic model of Rabin (Biochem J 1967, 102, 22C-23C) in which four conformational states are considered has been simplified to the three-state one. Only multistate models (if the concentration of enzyme or receptor ...