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The
Division of Materials Chemistry is a center of excellence in the materials science. The scientific
team of this Division makes a significant effort to help with its
knowledge to the overall economic development of Croatia. Main research
activities are financially sponsored by the Ministry of Science,
Education, and Sports. There are also numerous activities in co-operation
with sundry industries, hospitals, state institutions and
faculties. |
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The Radiation Chemistry and Dosimetry Laboratory, founded in 1958, focused on two avenues of research: (a)
investigation into fundamental mechanisms of the interactions of ionizing
radiation and matter, and (b) investigation of the possibilities to apply
biological and chemical effects of irradiation. On the basis of own
investigations two chemical dosimeters were developed, one for low and the
other for high doses. We are measuring the natural radiation background on
numerous locations in Croatia, as well as the exposure of medical
professionals and patients to irradiation in medical uses of radiations.
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These
measurements provided a quantitative basis for the development of
radiation protection in Croatia. Further research in radiation chemistry
of polymers, such as radiation crosslinking and radiation grafting of
polymers, as well as radiation polymerization and co-polymerization in
general,
has attracted considerable international
interest. |
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The Laboratory for Synthesis of New Materials has focused its scientific activities on metal oxides, oxide
glasses and zeolites. Systematic investigation of metal oxides started in
the early 70s during a search for desirable colloidal metal (hydrous)
oxide particles as carriers of short-lived radioisotopes, which were used
in the diagnosis of malignant diseases. Current investigations involve
magnetic oxides such as spinel-, hexagonal- and garnet ferrites. We are
also studying mechanisms of the formation of various metal oxides such as
ZrO2, HfO2,
SnO2, TiO2,
WO3, Rh2O3, V2O5 and Nb2O5. Special attention is focused on
the synthesis of nanosized oxide particles with superior properties for
applications in advanced technologies. We have a strong background in the
investigations of oxide glasses, glass-ceramics and corrosion processes of
different materials. |
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Further investigations in the chemistry of zeolites started with
the synthesis of zeolite-A for application in the detergent industry. Many
properties and behaviour of zeolites, which found important applications
as ion exchanges, molecular sieves, absorbents, catalysts, food
supplements, etc., can be anticipated on the basis of knowledge of
mechanisms and kinetics of critical processes and their
interdependence. |
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The
Laboratory for Precipitation Processes was founded in
1968. Apart from precipitation systems under equilibrium conditions, the
investigation of kinetics and mechanisms of precipitation processes and
their quantitative elaboration started. Among the precipitation processes
most attention is given to nucleation, crystal growth and dissolution,
aggregation of crystals and the transformation of thermodynamically
unstable forms into stable ones. Extensive investigations of calcium
phosphates, oxalates, carbonates and sulphates have been carried
out. |

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The field of metallic
materials has always played an important role in the research activities
of the Laboratory for Solid State
Chemistry. It has a long tradition, and was started
within the Department of Structural and Inorganic Chemistry at the very
beginning of the Rugjer Bošković Institute. The first work was related to
semiconducting materials, followed by a period of intensive research into
nuclear fuel materials. Current research is mainly focused on the
reactions of intermetallic compounds with hydrogen or oxygen. These
materials can be used as catalysts for hydrogen or oxygen, e.g., for
storage of hydrogen as an ecologically acceptable source of energy, in
rechargeable Ni(MH) batteries, where metallic hydride (MH) replaces toxic
cadmium, etc. |
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| In the early 70’s intensive
investigations in chemistry and stereochemistry of the transition metal
complex compounds started in the Laboratory for Complex Compounds Chemistry.
Compounds with direct chemical bond between metal atoms were developed
parallel with other investigations. Experience gained in the studies of
the transition metal complexes has been successfully applied to the
investigation of high-temperature superconducting oxides in the systems
La-Sr-Cu-O,
Y-Ba-Cu-O, Bi-Ca-Sr-Cu-O, (Ln,Ce)-(Nb,Ta)-Sr-Cu-P and Hg-Ba-Ca-Cu-O. The
investigation of high-temperature superconducting oxides is
interdisciplinary, with the participation of a number of domestic and
foreign scientific institutions. |

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| The Group for
Ichtiopathology – Biological Materials is
focused on biochemical and molecular research of fish, shellfish and
crustacean tissues. Determination of standard values of haematological and
biochemical parameters (haematocrit, refraction index, total proteins,
albumins, globulins, cholesterol, triglycerides, glucose, urea,
NH3, bilirubin, creatinine, enzymes:
alkaline phosphatase, creatinine kinase, ALT, AST, GGT, LDH, lipase,
electrolytes: Ca, Mg, Na, K, Cl, PO4) for
healthy fish living in optimum conditions is a prerequisite for their use
as bio-indicators of aquatic organisms' diseases and the environmental
conditions. |
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The comparison of blood parameter values
in different fish species in ecologically disrupted ecosystems
(freshwater, brackish, marine) with the obtained reference values in
optimum conditions enables a differentiation of the physiological and
pathological conditions of the fish. Furthermore, the activity of the
microsomal enzymatic system of fish will be measured as an important
indicator of pollution (chemotherapeutics, antibiotics, disinfectants) of
the water ecosystem. |
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The use of antibiotics and
chemotherapeutics for measuring p450 induction of fish enzymatic system
will provide new insights into the interaction and pharmacokinetics of
these medicines. This research will provide a better scientific
understanding of the natural and anthropogenically-induced processes that
influence the structure and function of the biological system of the
living organisms in water.
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| Members of the Division are involved in undergraduate and
postgraduate studies. A number of students have accomplished their BSc,
MSc and PhD theses on sundry topics of fundamental or applied research
activities at the Division. Currently there are 27 scientists, 8
researchers, 9 PhD students, 9 technicians and 2
administrators. |
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