Abstarct: In this paper are determinate some physicals, physical-chemical and chemical parameters... more Abstarct: In this paper are determinate some physicals, physical-chemical and chemical parameters of river water Shkumbini (Pena) to determinate the rrate level of pollution. The parameters are measure in four samples-places in the period january-june 2002 and conclude about influence of pollution in the water Ecosystem such as about precaution (stimate) for his protectingly. From results we can summarize that the river water is of first class for lot of parameters, which for moment present satisfactory ecologycal situation of the river water, that may be use for economical activity, for irrigation, for recreation and for swimming.
This paper examines the precipitation of Al (III) ion in water solutions of AlCl3 (10 mM,
5 mM an... more This paper examines the precipitation of Al (III) ion in water solutions of AlCl3 (10 mM, 5 mM and 3 mM) with phtalic acid and sulphosalicilic acid (100 mM, 10 mM and 1 mM) in constant ionic strength of 0,6 M NaCl. The region of concentrations clearer solutions were found and also where the solid phase is presented is determined. Solid phase is analyzed by means of elementary chemical analysis, IR spectroscopy and x-ray diffraction. The isolated compounds are: Al(III) – phtalic acid Al8(OH)18 [C6H4(COO)2]3 ·5H2O Al(III) – sulphosalicilic acid Al5(OH)13[C6H3OH(COO)SO3] ·2H2O The product of solvability of isolated compounds can be approximately calculated in the solid phases, which is of great importance to better understand the distribution of aluminum in earth and in water.
This paper presents the comparative aspects of the efficiency of three different teaching approac... more This paper presents the comparative aspects of the efficiency of three different teaching approaches on the acquisition of students' knowledge and skills. The research was carried out with students (245 in total) in the second year of secondary schools from three different cities in Macedonia in relation to the topic pH and Indicators. In one of the groups (Control group), the traditional teaching approach was used; in the second, simulation experiments were carried out (Sim group); and in the third group, real experiments were performed (Real group). After accomplishment of the topic, a test of knowledge was implemented. The statistical analysis of the results showed that the Real and Sim groups showed better results than the Control group. Some of the questions concerning the understanding of the processes on a molecular level were better answered in Sim groups; however, in general, it was concluded that the real experiments approach was the most effective. СПОРЕДБА НА РАЗЛИЧНИ ПРИОДИ ВО НАСТАВАТА ВРЗ СТЕКНУВАЊЕТО НА ЗНАЕЊА И ВЕШТИНИ НА УЧЕНИЦИТЕ Во овој труд е презентирана споредба на ефикасноста на три различни приоди во наставата врз стекнувањето на знаења и вештини на учениците. Истражувањето беше спороведено со ученици (вкупно 245) од втора година гимназиско образование од три различни градови во Македонија, а во врска со темата pH и индикатори. Во една од групите (контролна група) беше применет традиционален приод, во втората беа изведувани симулациски експерименти (сим– група), а во третата група беа изведувани реални експерименти (реал–група). По завршувањето на активностите од темата беше спроведен тест на знаење. Статистичката анализа на добиените резултати покажа дека реал–групите и сим–групите покажаа подобри резултати од контролната група. Прашањата кои се однесуваа на разбирањето на процесите на молекуларно ниво беа подобро одговорени од сим–групите. Но, може да се заклучи дека наставата со реални експерименти беше најефикасна. Клучни зборови: стекнување знаења; наставни приоди; симулациски експерименти; реални експерименти
The purpose of this study was to investigate the effects of computer simulations and real experim... more The purpose of this study was to investigate the effects of computer simulations and real experiments on understanding the concepts of acids and bases. New teaching methods were focused on gaining conceptual knowledge. The investigation was performed on a sample consisted of two hundred and eleven students. The research was carried out with experimental groups and control group. In aim to measure the gained knowledge, a conceptual test of knowledge was performed, and the test results were statistically processed. The results indicated that the students in the experimental groups, showed significantly greater achievement in comparison with the students in the control group. This shows that the implementation of computer simulations and real experiments produced better results in understanding of this concepts and removing the misconceptions.
Antithrombotic therapy is the main therapy for acute deep vein thrombosis. The objectives of anti... more Antithrombotic therapy is the main therapy for acute deep vein thrombosis. The objectives of anticoagulant therapy in the initial treatment are to prevent thrombus extension and early and late recurrences of deep vein thrombosis and pulmonary embolism. The main objective of our study is to analyze the usage of low molecular weight heparins in women, during the period of pregnancy. Our study, represents a retrospective study, which was undertaken during 01 July – 31 December 2013, in the Department of Gynecology and Obstetrics, at Clinical Hospital in Tetova. Among of 817 pregnant women, 277 of them received anticoagulant therapy, respectively Low Molecular Weight Heparins. 119 of them were patients with risky pregnancy and 68 were with the diagnosis Hypercoagulable State.
Water is the most essential product that is consumed by humans, which must be prevented from dete... more Water is the most essential product that is consumed by humans, which must be prevented from deterioration in quality. The quality of drinking water becomes even more important as water borne diseases spread through water. For this purpose, we assess the quality of drinking water in the city of Kumanova with some physico-chemical parameters, which have a significant role in determining the potability of drinking water. The obtained results were compared with Macedonian standards as well as with those set by the WHO and the EU. In this research, parameters such as temperature, turbidity, RC, pH, EC, TRAE, TDS, COD, nitrites, nitrates, ammonia and chlorides were found to be within the permissible limits, while residual chlorine in one case were found to be below lower than the recommended limit. Finally, the Drinking Water Quality Index (DWQI) developed by Canadian Council of Ministers of the Environment for five sample points is calculated. It has been found that drinking water in the 2011 spring season was of a Excellent category (average value of DWQI = 95.21) and suitable for drinking. We recommend that the relevant municipal authorities make regular and proper amount disinfection of drinking water, as there is no compromise that can be made when it comes to the drinking water.
In this paper are shown results of the
physical-chemical and mineralogical-petrographic
examinati... more In this paper are shown results of the physical-chemical and mineralogical-petrographic examinations of trepel from Brod-Gneotino, Bitola region, Republic of Macedonia. According to the scanning electronic microscopy (SEM), the infra-red (IR) and powder X-ray (XRPD) examinations, it was determined that examined trepel is composed mainly of opal (of biogenetic origin) as well as quartz, illite – hydromicas, feldspars (plagioclases, feldspars), and chlorites of minor importance. DTА and TGA examinations show results which are in line with the determined mineralogical composition of the sample. With these examinations it is concluded presence of organic matter in the sample. As result of these examinations it can be concluded that this raw material (trepel, natural mixture of diatomite and clay minerals) can be used as raw material for production of ceramic products (based on classical and hydrothermal technology), for synthesis of zeolites, as absorbent for cleaning of raw industrial waters.
Abstarct: In this paper are determinate some physicals, physical-chemical and chemical parameters... more Abstarct: In this paper are determinate some physicals, physical-chemical and chemical parameters of river water Shkumbini (Pena) to determinate the rrate level of pollution. The parameters are measure in four samples-places in the period january-june 2002 and conclude about influence of pollution in the water Ecosystem such as about precaution (stimate) for his protectingly. From results we can summarize that the river water is of first class for lot of parameters, which for moment present satisfactory ecologycal situation of the river water, that may be use for economical activity, for irrigation, for recreation and for swimming.
This paper examines the precipitation of Al (III) ion in water solutions of AlCl3 (10 mM,
5 mM an... more This paper examines the precipitation of Al (III) ion in water solutions of AlCl3 (10 mM, 5 mM and 3 mM) with phtalic acid and sulphosalicilic acid (100 mM, 10 mM and 1 mM) in constant ionic strength of 0,6 M NaCl. The region of concentrations clearer solutions were found and also where the solid phase is presented is determined. Solid phase is analyzed by means of elementary chemical analysis, IR spectroscopy and x-ray diffraction. The isolated compounds are: Al(III) – phtalic acid Al8(OH)18 [C6H4(COO)2]3 ·5H2O Al(III) – sulphosalicilic acid Al5(OH)13[C6H3OH(COO)SO3] ·2H2O The product of solvability of isolated compounds can be approximately calculated in the solid phases, which is of great importance to better understand the distribution of aluminum in earth and in water.
This paper presents the comparative aspects of the efficiency of three different teaching approac... more This paper presents the comparative aspects of the efficiency of three different teaching approaches on the acquisition of students' knowledge and skills. The research was carried out with students (245 in total) in the second year of secondary schools from three different cities in Macedonia in relation to the topic pH and Indicators. In one of the groups (Control group), the traditional teaching approach was used; in the second, simulation experiments were carried out (Sim group); and in the third group, real experiments were performed (Real group). After accomplishment of the topic, a test of knowledge was implemented. The statistical analysis of the results showed that the Real and Sim groups showed better results than the Control group. Some of the questions concerning the understanding of the processes on a molecular level were better answered in Sim groups; however, in general, it was concluded that the real experiments approach was the most effective. СПОРЕДБА НА РАЗЛИЧНИ ПРИОДИ ВО НАСТАВАТА ВРЗ СТЕКНУВАЊЕТО НА ЗНАЕЊА И ВЕШТИНИ НА УЧЕНИЦИТЕ Во овој труд е презентирана споредба на ефикасноста на три различни приоди во наставата врз стекнувањето на знаења и вештини на учениците. Истражувањето беше спороведено со ученици (вкупно 245) од втора година гимназиско образование од три различни градови во Македонија, а во врска со темата pH и индикатори. Во една од групите (контролна група) беше применет традиционален приод, во втората беа изведувани симулациски експерименти (сим– група), а во третата група беа изведувани реални експерименти (реал–група). По завршувањето на активностите од темата беше спроведен тест на знаење. Статистичката анализа на добиените резултати покажа дека реал–групите и сим–групите покажаа подобри резултати од контролната група. Прашањата кои се однесуваа на разбирањето на процесите на молекуларно ниво беа подобро одговорени од сим–групите. Но, може да се заклучи дека наставата со реални експерименти беше најефикасна. Клучни зборови: стекнување знаења; наставни приоди; симулациски експерименти; реални експерименти
The purpose of this study was to investigate the effects of computer simulations and real experim... more The purpose of this study was to investigate the effects of computer simulations and real experiments on understanding the concepts of acids and bases. New teaching methods were focused on gaining conceptual knowledge. The investigation was performed on a sample consisted of two hundred and eleven students. The research was carried out with experimental groups and control group. In aim to measure the gained knowledge, a conceptual test of knowledge was performed, and the test results were statistically processed. The results indicated that the students in the experimental groups, showed significantly greater achievement in comparison with the students in the control group. This shows that the implementation of computer simulations and real experiments produced better results in understanding of this concepts and removing the misconceptions.
Antithrombotic therapy is the main therapy for acute deep vein thrombosis. The objectives of anti... more Antithrombotic therapy is the main therapy for acute deep vein thrombosis. The objectives of anticoagulant therapy in the initial treatment are to prevent thrombus extension and early and late recurrences of deep vein thrombosis and pulmonary embolism. The main objective of our study is to analyze the usage of low molecular weight heparins in women, during the period of pregnancy. Our study, represents a retrospective study, which was undertaken during 01 July – 31 December 2013, in the Department of Gynecology and Obstetrics, at Clinical Hospital in Tetova. Among of 817 pregnant women, 277 of them received anticoagulant therapy, respectively Low Molecular Weight Heparins. 119 of them were patients with risky pregnancy and 68 were with the diagnosis Hypercoagulable State.
Water is the most essential product that is consumed by humans, which must be prevented from dete... more Water is the most essential product that is consumed by humans, which must be prevented from deterioration in quality. The quality of drinking water becomes even more important as water borne diseases spread through water. For this purpose, we assess the quality of drinking water in the city of Kumanova with some physico-chemical parameters, which have a significant role in determining the potability of drinking water. The obtained results were compared with Macedonian standards as well as with those set by the WHO and the EU. In this research, parameters such as temperature, turbidity, RC, pH, EC, TRAE, TDS, COD, nitrites, nitrates, ammonia and chlorides were found to be within the permissible limits, while residual chlorine in one case were found to be below lower than the recommended limit. Finally, the Drinking Water Quality Index (DWQI) developed by Canadian Council of Ministers of the Environment for five sample points is calculated. It has been found that drinking water in the 2011 spring season was of a Excellent category (average value of DWQI = 95.21) and suitable for drinking. We recommend that the relevant municipal authorities make regular and proper amount disinfection of drinking water, as there is no compromise that can be made when it comes to the drinking water.
In this paper are shown results of the
physical-chemical and mineralogical-petrographic
examinati... more In this paper are shown results of the physical-chemical and mineralogical-petrographic examinations of trepel from Brod-Gneotino, Bitola region, Republic of Macedonia. According to the scanning electronic microscopy (SEM), the infra-red (IR) and powder X-ray (XRPD) examinations, it was determined that examined trepel is composed mainly of opal (of biogenetic origin) as well as quartz, illite – hydromicas, feldspars (plagioclases, feldspars), and chlorites of minor importance. DTА and TGA examinations show results which are in line with the determined mineralogical composition of the sample. With these examinations it is concluded presence of organic matter in the sample. As result of these examinations it can be concluded that this raw material (trepel, natural mixture of diatomite and clay minerals) can be used as raw material for production of ceramic products (based on classical and hydrothermal technology), for synthesis of zeolites, as absorbent for cleaning of raw industrial waters.
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Papers by Bujar H Durmishi
5 mM and 3 mM) with phtalic acid and sulphosalicilic acid (100 mM, 10 mM and 1 mM)
in constant ionic strength of 0,6 M NaCl. The region of concentrations clearer solutions
were found and also where the solid phase is presented is determined. Solid phase is analyzed
by means of elementary chemical analysis, IR spectroscopy and x-ray diffraction.
The isolated compounds are:
Al(III) – phtalic acid Al8(OH)18 [C6H4(COO)2]3 ·5H2O
Al(III) – sulphosalicilic acid Al5(OH)13[C6H3OH(COO)SO3] ·2H2O
The product of solvability of isolated compounds can be approximately calculated in
the solid phases, which is of great importance to better understand the distribution of aluminum
in earth and in water.
understanding the concepts of acids and bases. New teaching methods were focused on gaining conceptual knowledge. The investigation was performed on a sample
consisted of two hundred and eleven students. The research was carried out with experimental groups and control group. In aim to measure the gained knowledge, a
conceptual test of knowledge was performed, and the test results were statistically processed. The results indicated that the students in the experimental groups, showed
significantly greater achievement in comparison with the students in the control group. This shows that the implementation of computer simulations and real experiments
produced better results in understanding of this concepts and removing the misconceptions.
physical-chemical and mineralogical-petrographic
examinations of trepel from Brod-Gneotino, Bitola
region, Republic of Macedonia. According to the
scanning electronic microscopy (SEM), the infra-red (IR)
and powder X-ray (XRPD) examinations, it was
determined that examined trepel is composed mainly of
opal (of biogenetic origin) as well as quartz, illite –
hydromicas, feldspars (plagioclases, feldspars), and
chlorites of minor importance. DTА and TGA
examinations show results which are in line with the
determined mineralogical composition of the sample.
With these examinations it is concluded presence of
organic matter in the sample. As result of these
examinations it can be concluded that this raw material
(trepel, natural mixture of diatomite and clay minerals)
can be used as raw material for production of ceramic
products (based on classical and hydrothermal
technology), for synthesis of zeolites, as absorbent for
cleaning of raw industrial waters.
5 mM and 3 mM) with phtalic acid and sulphosalicilic acid (100 mM, 10 mM and 1 mM)
in constant ionic strength of 0,6 M NaCl. The region of concentrations clearer solutions
were found and also where the solid phase is presented is determined. Solid phase is analyzed
by means of elementary chemical analysis, IR spectroscopy and x-ray diffraction.
The isolated compounds are:
Al(III) – phtalic acid Al8(OH)18 [C6H4(COO)2]3 ·5H2O
Al(III) – sulphosalicilic acid Al5(OH)13[C6H3OH(COO)SO3] ·2H2O
The product of solvability of isolated compounds can be approximately calculated in
the solid phases, which is of great importance to better understand the distribution of aluminum
in earth and in water.
understanding the concepts of acids and bases. New teaching methods were focused on gaining conceptual knowledge. The investigation was performed on a sample
consisted of two hundred and eleven students. The research was carried out with experimental groups and control group. In aim to measure the gained knowledge, a
conceptual test of knowledge was performed, and the test results were statistically processed. The results indicated that the students in the experimental groups, showed
significantly greater achievement in comparison with the students in the control group. This shows that the implementation of computer simulations and real experiments
produced better results in understanding of this concepts and removing the misconceptions.
physical-chemical and mineralogical-petrographic
examinations of trepel from Brod-Gneotino, Bitola
region, Republic of Macedonia. According to the
scanning electronic microscopy (SEM), the infra-red (IR)
and powder X-ray (XRPD) examinations, it was
determined that examined trepel is composed mainly of
opal (of biogenetic origin) as well as quartz, illite –
hydromicas, feldspars (plagioclases, feldspars), and
chlorites of minor importance. DTА and TGA
examinations show results which are in line with the
determined mineralogical composition of the sample.
With these examinations it is concluded presence of
organic matter in the sample. As result of these
examinations it can be concluded that this raw material
(trepel, natural mixture of diatomite and clay minerals)
can be used as raw material for production of ceramic
products (based on classical and hydrothermal
technology), for synthesis of zeolites, as absorbent for
cleaning of raw industrial waters.