Autorica u radu govori o reformama obrazovnog i školskog sustava koje su prosvijećeni habsburški vladari započeli provoditi tijekom 18. stoljeća, ostavljajući pritom neizbrisiv trag na daljnji život ...i cjelokupni razvoj Slavonske vojne krajine. Rad analizira zakonske propise o školstvu koji su donošeni tijekom 18. i 19. stoljeća, te njihov utjecaj na modernizaciju života u društvenom, kulturnom i materijalnom životu ljudi na prostoru Slavonske vojne krajine.
Renal lithiasis is a significant medical and social problem. Worldwide recurrence is anywhere from 3% to 5%. Objective of this paper is to evaluate two methods for distinguishing between stone ...formers and non-stone formers. Urine samples were titrated with calcium and seed crystals were added to facilitate precipitation. Ionic calcium levels were monitored and compared between the two groups. Stone formers showed impaired tolerance to the calcium added and increased precipitation on seed crystals. Both methods discriminated between stone formers and non-stone formers. Further evaluations are needed to establish the better of the two for wider clinical use.
Metabolic parameters were determined in fasting blood serum, fasting first morning urine, and 24-hour urine of male patients with recurrent calcium oxalate stones (N = 26, age 39.1 +/- 6.2 years) as ...well as in male healthy controls (N = 18, age 35.0 +/- 7.1 years), recruited from the eastern part of Croatia. The 24-hour urinary calcium excretion was significantly higher (p < 0.01) for patients (5.6 +/- 2.5 mmol) than for controls (3.7 +/- 1.9 mmol), but potassium excretion was higher (p < 0.01) for controls (74.5 +/- 33.8 mmol) than for patients (49.2 +/- 15.7 mmol). The mean ionic activity product of calcium and oxalate ions, IAP(CaOx), calculated from the fasting first morning urine parameters, was 25% higher for patients than for controls, but the difference was not statistically significant (p > 0.05). Very strong correlation (r = 0.97) was obtained between IAP(CaOx) values and calculated Ogawa indices that were recommended for estimating the potential risk for calcium oxalate stone formation.
Solid phases formed in the quaternary system: uric acid-calcium hydroxide -hydrochloric acid-water aged for 2 months at 310 K were studied to determine conditions for calcium hydrogenurate ...hexahydrate, Ca(C
H
N
O)
· 6H
O precipitation. The precipitates were identified by chemical and thermogravimetric analyses, x-ray powder diffraction, infrared spectroscopy, light microscopy, and scanning electron microscopy. In the precipitation diagram the concentration region in which calcium hydrogenurate hexahydrate precipitated as a single solid phase was established. The solubility of calcium hydrogenurate hexahydrate was investigated in the pH range from 6.2 to 10.1 at different temperatures. The total soluble and ionic concentration of calcium (atomic absorption spectroscopy and Ca-selective electrode), total urate concentration (spectrophotometry), and pH were determined in equilibrated solutions. The data are presented in the form of tables and chemical potential diagrams. By using these data the thermodynamic solubility products of calcium hydrogenurate hexahydrate,
=
(Ca
) ·
(C
H
N
O
), were determined: Formula: see textThe formation of calcium hydrogenurate hexahydrate crystals in urinary tract of patients with pathologically high concentrations of calcium and urates (hypercalciuria and hyperuricosiuria) is possible.
Suradnja kemičara, liječnika i urologa s Instituta Ruđer Bošković Zagreb, Instituta za medicinska istraživanja i medicinu rada Zagreb te Kliničke bolnice Osijek (danas Kliničkoga bolničkoga centra ...Osijek) započela je prije više od tridesetak godina na projektima povezanim s nastankom urolitijaze. Sama istraživanja pridonijela su novim spoznajama o različitim faktorima važnim za nastajanje kamenaca, dijagnosticiranje i liječenje urolitijaze. Više radova objavljeno je u znanstveno-stručnom časopisu Medicinski vjesnik (1984. i 1985.) te u knjizi Urolitijaza (1989.). U radu V. Babić-Ivančić i sur., objavljenom u Medicinskom vjesniku 2004. godine, danje detaljan pregled bazičnih, primijenjenih i kliničkih istraživanja do 2004. godine na zajedničkim projektima financiranim iz Hrvatske (MZOŠ) i na međunarodnim projektima (EZ, USA, TEMPUS) provedenim u trima suradnim ustanovama čiji su rezultati objavljeni u znanstvenim časopisima i/ili prezentirani na znanstvenim skupovima u zemlji i inozemstvu. U ovome radu dat će se osvrt na rezultate istraživanja, te suradnju u vremenskom razdoblju od 2004. godine do danas (2010.). Iz ranijih istraživanja te istraživanja u zadnjih šest godina dat će se viđenje o istraživanjima te problematike u budućnosti.
Proces nastajanja mokraćnih kamenaca može se pojednostavljeno promatrati kao taloženje mineralnih sastojaka mokraćnih kamenaca iz kompleksne otopine. To pojednostavljenje omogućuje rasvjetljavanje ...mehanizama nastajanja kamenaca primjenom fizikalno kemijskih principa nukleacije i rasta kristala u proučavanju otopina sintetskih analoga njihovih glavnih sastojaka. U ovom radu dan je pregled istraživanja taloženja glavnih sastojaka mokraćnih kamenaca (kalcijevih fosfata i oksalata, urata) u jednostavnim (jednokomponentnim) i složenim (dvo- i trokomponentnim) taložnim sustavima provedenih u našoj grupi u posljednjih četrdesetak godina, kao i rezultati preliminarnih istraživanja taloženja u umjetnom urinu.
Metabolic parameters were determined in fasting blood serum, fasting first morning urine, and 24-hour urine of male patients with recurrent calcium oxalate stones (N=26, age 39.1±6.2 years) as well ...as in male healthy controls (N=18, age 35.0±7.1 years), recruited from the eastern part of Croatia. The 24-hour urinary calcium excretion was significantly higher (p<0.01) for patients (5.6±2.5 mmol) than for controls (3.7±1.9 mmol), but potassium excretion was higher (p<0.01) for controls (74.5±33.8 mmol) than for patients (49.2±15.7 mmol). The mean ionic activity product of calcium and oxalate ions, IAP(CaOx), calculated from the fasting first morning urine parameters, was 25% higher for patients than for controls, but the difference was not statistically significant (p>0.05). Very strong correlation (r=0.97) was obtained between IAP(CaOx) values and calculated Ogawa indices that were recommended for estimating the potential risk for calcium oxalate stone formation.
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