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1.
Recently, Balogh et al. (2018) answered in negative the question that was posed in several earlier papers whether the packing chromatic number is bounded in the class of graphs with maximum degree 3. In this note, we present an explicit infinite family of subcubic graphs with unbounded packing chromatic number. 相似文献
2.
Romana Krištof Suzana Košenina Benjamin Zorko Jasmina Kožar Logar 《Journal of Radioanalytical and Nuclear Chemistry》2017,314(2):675-679
The aim of the research was to obtain first results of tritium in the organic matter of environmental samples in the vicinity of Kr?ko NPP. The emphasis was on the layout of suitable sampling network of crops and fruits in nearby agricultural area. Method for determination of tritium in organic matter in the form of Tissue Free Water Tritium (TFWT) and Organically Bound Tritium (OBT) has been implemented. Capabilities of the methods were tested on real environmental samples and its findings were compared to modeled activities of tritium from atmospheric releases and literature based results of TFWT and OBT. 相似文献
3.
Nuhanović Mirza Smječanin Narcisa Mulahusić Neira Sulejmanović Jasmina 《Journal of Radioanalytical and Nuclear Chemistry》2021,328(2):617-626
Journal of Radioanalytical and Nuclear Chemistry - Modified pomegranate peel was utilized as a sorbent for the biosorption of uranium(VI) from the aqueous solution. The biosorbent was characterized... 相似文献
4.
Senka Djakovi Ljubica Glava‐Obrovac Jasmina Lapi Silvija Mara
i Juraj Kirchofer Marija Kneevi Marijana Juki Silvana Rai‐Mali 《应用有机金属化学》2021,35(1)
Mono‐ ( 3a – 3e and 4a – 4e ) and bis‐ferrocene ( 5a – 5e and 6a – 6e ) conjugated 5‐substituted uracil derivatives that are bridged by 1,2,3‐triazole linker were synthesized. The impact of ferrocene unit and spacer between ferrocene and triazole on radical scavenging potency was observed. Bis‐ferrocenyl uracil derivatives exhibited better antiproliferative activities than their mono‐ferrocenyl analogs. Bis‐ferrocenyl methyl‐ ( 5b ) and halogen‐substituted ( 5e , 6c , and 6d ) uracil derivatives showed pronounced and selective cytostatic activities on colon adenocarcinoma (CaCo‐2) and Burkitt lymphoma (Raji) cells, with higher potency and selectivity than the reference drug 5‐fluorouracil. Generation of reactive oxygen species (ROS) in CaCo‐2 and Raji cells when treated with compounds 5b , 5e , and 6d was observed. Bis‐ferrocenyl 5‐chlorouracil 6c induced significant disruption in mitochondrial membrane potential that is accompanied by activation of apoptosis in CaCo‐2, Raji, and acute lymphoblastic leukemia (CCRF‐CEM) cells, while 6d caused mitochondrial dysfunction and apoptosis induction in CaCo‐2 and Raji cells. Potent antiproliferative activity of 6c and 6d could be associated with mitochondrial membrane potential disruption accompanied by apoptosis induction. Our findings highlighted 6c and 6d with potent and selective antiproliferative activity on CaCo‐2, Raji, and CCRF‐CEM cells that may be associated with targeting cancer cell mitochondria, as a molecular target. 相似文献
5.
Janković Bojan Dodevski Vladimir Stojmenović Marija Krstić Sanja Popović Jasmina 《Journal of Thermal Analysis and Calorimetry》2018,133(1):465-480
Journal of Thermal Analysis and Calorimetry - Raw and pyrolyzed samples of the plane tree seeds (PTS) were tested by various advanced analytical techniques including simultaneous TG-DSC technique,... 相似文献
6.
Adamantyl ferrocene derivatives: Antioxidant abilities and effects on model lipid membranes 下载免费PDF全文
Adela Štimac Jasmina Lapić Valentino Blasina Marija Lukinac Senka Djaković Ivo Crnolatac Leo Frkanec Ruža Frkanec 《应用有机金属化学》2018,32(2)
A series of homoannularly and heteroannularly substituted adamantyl ferrocene derivatives has been synthesized and their effects on membrane fluidity were investigated using liposomes as the membrane models. The liposome formulations of adamantyl ferrocene derivatives were characterized by using dynamic light scattering, differential scanning calorimetry and fluorescence anisotropy measurements. It was demonstrated that adamantyl ferrocene derivatives incorporated into the liposome significantly affect the structure of the lipid bilayer. The results of the study have revealed that adamantyl ferrocene derivatives, compounds 9 – 12, partition into the hydrophobic/hydrophilic interface of the membrane, causing a significant decrease in membrane fluidity. The antioxidant potential of synthesized compounds was assessed with DPPH method and it was shown that the examined compounds possess certain antioxidant activity. 相似文献
7.
Goutam Mukhopadhyay Jasmina Khanam Arunabha Nanda Arindam Basu Sarkar 《Chromatographia》2010,71(7-8):699-702
A simple, sensitive and precise reverse phase liquid chromatographic method has been developed and validated for quantification of bovine serum albumin (BSA), α-lactalbumin (α-La) and β–lactoglobulin (β-Lg) that are removed from whey waste by foam fractionation method. The data is reproducible over a wide concentration range. This optimized method allowed analysis of BSA, α-La, β-Lg in a mixture within 5 min and could be applied to the analysis of a variety of commercial and laboratory whey products within a short time. 相似文献
8.
Ćilerdžić Jasmina Galić Milica Ivanović Žarko Brčeski Ilija Vukojević Jelena Stajić Mirjana 《Applied biochemistry and biotechnology》2019,187(4):1371-1383
Applied Biochemistry and Biotechnology - Biological pretreatment of the lignocellulosic residues, in which white-rot fungi have a crucial role, has many advantages compared to the chemical,... 相似文献
9.
A rapid, relatively sensitive, and low-cost method for the determination of water-soluble urea content in dermatological therapy products and cosmetics is proposed using a new spectrophotometric assay with water as the only extraction solvent. Spectrophotometric methods involve addition of a known excess of bromate to urea in an acid medium, followed by the determination of residual bromine and chlorine reacting with methyl orange and measurement of absorbance at 505 nm. The absorbance increases linearly with urea concentration (r = 0.9998). The systems obey Beer's law for 6 - 90 microg ml(-1). The calculated apparent molar absorbance values are found to be 4.537 x 10(3) dm(3) mol(-1) cm(-1) and the Sandell's sensitivity is 0.013 microg cm(-2). The variables affecting the rate of the reaction were investigated. The relative standard deviation for five-replication determination of 60 microg ml(-1) urea was 2.1% and the detection limit of the method is 0.34 ng ml(-1). 相似文献
10.
Marijana Petković Ana Vujačić Jürgen Schiller Živadin Bugarčić Jasmina Savić Vesna Vasić 《Rapid communications in mass spectrometry : RCM》2009,23(10):1467-1475
Attempts are being made to overcome the resistance of tumour cells to platinum (Pt) drugs by the synthesis of new generations of Pt complexes, and it is important to find appropriate and simple methods for the characterization of those novel complexes. The additional applicability of such a method for the analysis of the interactions of metal complexes with biomolecules would be advantageous. Matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOFMS) seems to possess the capability to become this method of choice, since it could be applied to low‐mass complexes as well as for the analysis of large biomolecules. In this work the applicability of flavonoids – quercetin and rutin – as matrices for MALDI‐TOFMS analysis of dichlorido(ethylendiamine)platinum(II) ([PtCl2(en)]), dichlorido(diaminocyclohexane)platinum(II) ([PtCl2(dach)]) and chloride (diethylenetriamine) palladium(II) chloride ([PdCl(dien)]Cl) complexes is demonstrated. Spectra of Pt(II) and Pd(II) complexes recorded in the presence of quercetin and rutin are rather simple: Pt(II) complexes generate [M+Na]+ or [M+K]+ions, whereas the investigated Pd(II) complex gives ions generated by the loss of one Cl? or HCl. Flavonoids give a relatively small number of well‐defined ions in the low‐mass region (at m/z 303.3 for quercetin and m/z 633.5 for rutin). Quercetin and rutin can be applied in much lower concentrations than other common MALDI matrices and require rather low laser intensity. We speculate that flavonoids stabilize the structures of the metal complexes and that they may be useful for the analysis of other biologically active metal complexes, thus implying their broader applicability. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献