Goran LUKIĆ - Academia.edu (original) (raw)
Papers by Goran LUKIĆ
Journal of Non-crystalline Solids, 2010
This work analyzes the possibility of using an alternating series development in deriving the rel... more This work analyzes the possibility of using an alternating series development in deriving the relations allowing the determination of the parameters of non-isothermal crystallization. When this series development is applied onto the process of non-isothermal glass crystallization it suffices to take only the first term of the series. Linear fitting yields a relation from which one can determine the Avrami parameter n, dependent on the crystallization mechanism, and the activation energy. By an analogous procedure, taking the first two terms of the developed series, one obtains the Matusita equation. Both of these relations hold also when the temperature T is only somewhat higher than the initial T o , and not only when TN N T o . Experimental measurements by differential scanning calorimetry method and the application of the relations derived, as well as of other standard methods for calculating parameters of nonisothermal crystallization, were performed for the chalcogenide glass Cu 15 (As 2 Se 3 ) 85 .
![Research paper thumbnail of Influence of substrate absorption on accuracy of determination of refractive index and thickness of uniform thin chalcogenide Cu 1[As 2(S 0.5Se 0.5) 3] 99 film](https://attachments.academia-assets.com/47581719/thumbnails/1.jpg)
](Thin Solid Films, 2010
The envelope method is a commonly used method for determination of some important optical constan... more The envelope method is a commonly used method for determination of some important optical constants, by using the envelopes of the transmittance T(λ) and/or reflectance R(λ) spectrum of the thin film deposited on transparent substrate. Two envelope methods were carried out in this paper: standard-method which assumes that substrate is absolutely transparent and modified-method which takes substrate absorption into account. The investigated sample is a uniform thin chalcogenide Cu 1 [As 2 (S 0.5 Se 0.5 ) 3 ] 99 film, deposited onto two kinds of a weakly absorbing substrates that differ in thickness. It was shown that the degree of accuracy in determination of chosen optical parameters for both investigated samples is notably improved when the absorbance of the bare substrates is considered in the expressions for the envelopes.
Acta Diabetologica, 2010
Hyperglycaemia caused by stress and inflammation is common during critical illness. We hypothesis... more Hyperglycaemia caused by stress and inflammation is common during critical illness. We hypothesised that a latent glucose metabolism disturbance contributes to development of hyperglycaemia and that those patients have increased risk for diabetes. We included patients with sepsis, acute coronary syndrome and acute heart failure with no history of impaired glucose metabolism and divided them in the hyperglycaemia group (glucose ≥ 7.8 mmol/l) and normoglycaemia group. Patients were followed for 5 years. Follow-up was completed for 115 patients in the normoglycaemia group, of which 4 (3.5%) developed type 2 diabetes. In the hyperglycaemia group 51 patients finished follow-up and 8 (15.7%) developed type 2 diabetes. Relative risk in 5-year period for patients with hyperglycaemia was 4.51 for development of type 2 diabetes. Patients with hyperglycaemia during critical illness who are not diagnosed with diabetes before or during the hospitalisation should be considered a population at increased risk for developing diabetes.
Journal of Thermal Analysis and Calorimetry
Thermal properties of glasses from the system Bi x (As2S3)100−x were studied by differential scan... more Thermal properties of glasses from the system Bi x (As2S3)100−x were studied by differential scanning calorimetry of a representative series of samples with x = 0.5, 2, 4, 6, 8, and 10 at.% Bi by determining the characteristic temperatures (T g, T onset, T c, T m) and enthalpies (H c, H m) of the processes taking place in the samples during their thermal treatment. Analysis of DSC recordings for the samples at the same heating rate allowed characterization of the phase transition temperature T g as a function of the content of doping atoms in accordance with the criteria of chemical bonds formation in amorphous materials. Samples with 4 and 6 at.% Bi were thermally treated at different heating rates with the aim of determining, among the others, the parameters of their thermal stability. The assessment was done based on three different criteria. A higher tendency toward crystallization was observed with the glasses having a higher Bi content. Also, a trend of T g shifting toward higher values, observed with increase in the heating rate, is in concordance with the Lasocka equation.
Journal of Neurosurgery, 2002
Toxicology in Vitro, 2008
The toxicity of platinum(II) ion could be significantly modified by coordination with some organi... more The toxicity of platinum(II) ion could be significantly modified by coordination with some organic compounds. In our study, the cytotoxicity and the influence of platinum(II) complexes, such as cisplatin, cis-[PtCl 2 (NH 3 ) 2 ], [PtCl 2 (SMC)] and [PtCl 2 (DMSO) 2 ] (where SMC is S-methyl-L-cysteine and DMSO is dimethyl sulphoxide) on spontaneous motility of isolated human fallopian tubes were investigated. Cisplatin showed potent pro-apoptotic effects on peripheral blood mononuclear cells (PBMC). However, peripheral blood mononuclear cells were substantially less sensitive to [PtCl 2 (SMC)] and [PtCl 2 (DMSO)], and these compounds showed no toxic effect on PBMC in all concentrations examined.
Journal of Critical Care, 2010
Hyperglycemia is frequent in sepsis, even in patients without diabetes or impaired glucose metabo... more Hyperglycemia is frequent in sepsis, even in patients without diabetes or impaired glucose metabolism. It is a consequence of inflammatory response and stress, so its occurrence is related to severity of illness. However, not all severely ill develop hyperglycemia and some do even in mild disease. We hypothesized the existence of latent disturbance of glucose metabolism that contributes to development of hyperglycemia and that those patients might have increased risk for diabetes.Patients admitted with sepsis and no history of impaired glucose metabolism were included and divided in the hyperglycemia group (glucose ≥7.8 mmol/L) and normoglycemia group. Severity of sepsis was assessed. Surviving patients without diabetes at discharge were followed-up for 5 years to investigate risk for development of diabetes.Hyperglycemia was related to severity of sepsis. Follow-up was finished for 55 patients with hyperglycemia, of which 8 (15.7%) developed diabetes, and 118 patients with normoglycemia, of which 5 (4.2%) developed diabetes (P = .002). Relative risk for developing type 2 diabetes was 4.29 (95% CI, 1.35-13.64).Patients with hyperglycemia in sepsis who are not diagnosed with diabetes before or during the hospitalization should be considered a population at increased risk for developing diabetes.
Pharmacological Research, 2009
The aim of our study was to investigate mechanism of action of endothelins 1, 2 and 3 on spontane... more The aim of our study was to investigate mechanism of action of endothelins 1, 2 and 3 on spontaneous activity, tone and intraluminal pressure of human ureter. Both longitudinal tension and intraluminal pressure were recorded from the isolated segments of proximal human ureter.
Journal of Non-crystalline Solids, 2010
This work analyzes the possibility of using an alternating series development in deriving the rel... more This work analyzes the possibility of using an alternating series development in deriving the relations allowing the determination of the parameters of non-isothermal crystallization. When this series development is applied onto the process of non-isothermal glass crystallization it suffices to take only the first term of the series. Linear fitting yields a relation from which one can determine the Avrami parameter n, dependent on the crystallization mechanism, and the activation energy. By an analogous procedure, taking the first two terms of the developed series, one obtains the Matusita equation. Both of these relations hold also when the temperature T is only somewhat higher than the initial T o , and not only when TN N T o . Experimental measurements by differential scanning calorimetry method and the application of the relations derived, as well as of other standard methods for calculating parameters of nonisothermal crystallization, were performed for the chalcogenide glass Cu 15 (As 2 Se 3 ) 85 .
Thin Solid Films, 2010
The envelope method is a commonly used method for determination of some important optical constan... more The envelope method is a commonly used method for determination of some important optical constants, by using the envelopes of the transmittance T(λ) and/or reflectance R(λ) spectrum of the thin film deposited on transparent substrate. Two envelope methods were carried out in this paper: standard-method which assumes that substrate is absolutely transparent and modified-method which takes substrate absorption into account. The investigated sample is a uniform thin chalcogenide Cu 1 [As 2 (S 0.5 Se 0.5 ) 3 ] 99 film, deposited onto two kinds of a weakly absorbing substrates that differ in thickness. It was shown that the degree of accuracy in determination of chosen optical parameters for both investigated samples is notably improved when the absorbance of the bare substrates is considered in the expressions for the envelopes.
Acta Diabetologica, 2010
Hyperglycaemia caused by stress and inflammation is common during critical illness. We hypothesis... more Hyperglycaemia caused by stress and inflammation is common during critical illness. We hypothesised that a latent glucose metabolism disturbance contributes to development of hyperglycaemia and that those patients have increased risk for diabetes. We included patients with sepsis, acute coronary syndrome and acute heart failure with no history of impaired glucose metabolism and divided them in the hyperglycaemia group (glucose ≥ 7.8 mmol/l) and normoglycaemia group. Patients were followed for 5 years. Follow-up was completed for 115 patients in the normoglycaemia group, of which 4 (3.5%) developed type 2 diabetes. In the hyperglycaemia group 51 patients finished follow-up and 8 (15.7%) developed type 2 diabetes. Relative risk in 5-year period for patients with hyperglycaemia was 4.51 for development of type 2 diabetes. Patients with hyperglycaemia during critical illness who are not diagnosed with diabetes before or during the hospitalisation should be considered a population at increased risk for developing diabetes.
Journal of Thermal Analysis and Calorimetry
Thermal properties of glasses from the system Bi x (As2S3)100−x were studied by differential scan... more Thermal properties of glasses from the system Bi x (As2S3)100−x were studied by differential scanning calorimetry of a representative series of samples with x = 0.5, 2, 4, 6, 8, and 10 at.% Bi by determining the characteristic temperatures (T g, T onset, T c, T m) and enthalpies (H c, H m) of the processes taking place in the samples during their thermal treatment. Analysis of DSC recordings for the samples at the same heating rate allowed characterization of the phase transition temperature T g as a function of the content of doping atoms in accordance with the criteria of chemical bonds formation in amorphous materials. Samples with 4 and 6 at.% Bi were thermally treated at different heating rates with the aim of determining, among the others, the parameters of their thermal stability. The assessment was done based on three different criteria. A higher tendency toward crystallization was observed with the glasses having a higher Bi content. Also, a trend of T g shifting toward higher values, observed with increase in the heating rate, is in concordance with the Lasocka equation.
Journal of Neurosurgery, 2002
Toxicology in Vitro, 2008
The toxicity of platinum(II) ion could be significantly modified by coordination with some organi... more The toxicity of platinum(II) ion could be significantly modified by coordination with some organic compounds. In our study, the cytotoxicity and the influence of platinum(II) complexes, such as cisplatin, cis-[PtCl 2 (NH 3 ) 2 ], [PtCl 2 (SMC)] and [PtCl 2 (DMSO) 2 ] (where SMC is S-methyl-L-cysteine and DMSO is dimethyl sulphoxide) on spontaneous motility of isolated human fallopian tubes were investigated. Cisplatin showed potent pro-apoptotic effects on peripheral blood mononuclear cells (PBMC). However, peripheral blood mononuclear cells were substantially less sensitive to [PtCl 2 (SMC)] and [PtCl 2 (DMSO)], and these compounds showed no toxic effect on PBMC in all concentrations examined.
Journal of Critical Care, 2010
Hyperglycemia is frequent in sepsis, even in patients without diabetes or impaired glucose metabo... more Hyperglycemia is frequent in sepsis, even in patients without diabetes or impaired glucose metabolism. It is a consequence of inflammatory response and stress, so its occurrence is related to severity of illness. However, not all severely ill develop hyperglycemia and some do even in mild disease. We hypothesized the existence of latent disturbance of glucose metabolism that contributes to development of hyperglycemia and that those patients might have increased risk for diabetes.Patients admitted with sepsis and no history of impaired glucose metabolism were included and divided in the hyperglycemia group (glucose ≥7.8 mmol/L) and normoglycemia group. Severity of sepsis was assessed. Surviving patients without diabetes at discharge were followed-up for 5 years to investigate risk for development of diabetes.Hyperglycemia was related to severity of sepsis. Follow-up was finished for 55 patients with hyperglycemia, of which 8 (15.7%) developed diabetes, and 118 patients with normoglycemia, of which 5 (4.2%) developed diabetes (P = .002). Relative risk for developing type 2 diabetes was 4.29 (95% CI, 1.35-13.64).Patients with hyperglycemia in sepsis who are not diagnosed with diabetes before or during the hospitalization should be considered a population at increased risk for developing diabetes.
Pharmacological Research, 2009
The aim of our study was to investigate mechanism of action of endothelins 1, 2 and 3 on spontane... more The aim of our study was to investigate mechanism of action of endothelins 1, 2 and 3 on spontaneous activity, tone and intraluminal pressure of human ureter. Both longitudinal tension and intraluminal pressure were recorded from the isolated segments of proximal human ureter.