Studia Universitatis Moldaviae. Stiinte reale si ale naturii

4

Authors: Irina STRATULAT, Sergiu DOBROJAN, Victor ŞALARU

The blue- green alga Nostoc flagelliforme is a terrestrial specie, that meets more frequently in arid and semi-arid areas of the Earth. The importance attached of research for Nostoc flagelliforme is justified by morpho-physiological properties and rich content of biologically active substances that can be used in various fields. From the biochemical components of the alga of great importance are carbohydrates that serve as a source for production of pharmaceutical preparations which are based on high contents of polysaccharide. Due to easy digestibility of alga, Nostoc flagelliforme is widely used for human consumption both as a delicacy and as a supplement of biologically active substances. These researches highlight the Nostoc flagelliforme through the characteristic of biologically active substances, evidence of habitat and aspects of utilization the algal biomass in different areas.

5

Authors: Lidia COJOCARI, Snejana ŢÎMBALARI

The function of the respiratory system shows an increased sensitivity to the action of both factors sanogenic and pathogens. The systematic physical activity determines the improvement of physiological parameters and certifies the sanogenous impact regarding the insignificant reduction in the frequency of respiratory movements to 23,07 ± 0.23 and a truthful increase (p <0,05)of the vital capacity of the lungs with 200,13 ml. The bronchial asthma, the pathogenic factor, reduces the functional activity of the respiratory system, as evidenced by the respiratory rate increase by 24,9% during the flare.

5

Authors: Ho Anh Tuan, Dumitru BULAT, Marin USATÎI

Analysis and identification of 35 specimens of family Platycephalidae collected in the estuary Gianh in the north central part of Vietnam. We have classified three species: Rogadius serratus (Cuvier, 1829), Sorsogona tuberculata (Cuvier, 1829) and Platycephalus indicus (Linnaeus, 1758). Which has species: Rogadius serratus (Cuvier, 1829) & Sorsogona tuberculata (Cuvier, 1829) was first discovered in the study area and northern Vietnam.

5

Authors: Светлана НИКОЛАЕВА, Аркадий НИКОЛАЕВ, Виктория ШУБИНА

Data on nature of interaction Trichoderma harzianum and Trichoderma lignorum (on two isolates of each species) with pathogens of agricultural crops are submitted. Trichoderma species in the in vitro conditions have limited growth of pathogens, changed structure of their colonies, in whole or in part occupying them. Fusarium sp. isolate from the damaged root of sugar beet limited growth of all Trichoderma isolates, changed color of their colonies from green to yellow similar to action of Bacillus subtilis.

5

Authors: Petru BUNDUC, Ionel MUNTELE, Vitalie SOCHIRCĂ

Botoşani County was historically under the influence of various ethnic groups’ flows, due to the position of the intersection of important trade routes crossing the county. Romanians as indigenous ethnicity have always known a high rate of over 90%, the county's population. At the same time, ethnic minorities (especially Armenians and Hebrews) had a significant role in the county's socio-economic system.

6

Authors: Irina BACALOV

This study is to research the influence of Spirulina grown on wastewater from cattle on the system endocrine pancreas - adrenocortical in experimental diabetes. Using herbal medicine for diabetes is more effective if it takes place alongside the basic treatment and it is directed not so much to lower blood glucose, but to treat various complications that occur in diabetes.

6

Authors: Eduard COROPCEANU

The strategy of evolving synthesis of mono-, bi- and polynuclear compounds with dioxime ligands based on bridging bipyridines has been developed. Oriented synthesis of 11 copper, zinc and cadmium binuclear complexes and 9 zinc and cadmium coordination polymers has been performed. Their composition and structure were determined by modern inves¬ti¬gation methods: IR spectroscopy, X-ray analysis. It was established that zinc and cadmium, are able to form coor¬di¬nation polymers with coordination number 6 and anions nature of the initial salt has a decisive contribution on building up their molecular architecture. The type of bridging ligand influences the specificity of polymeric chain. The ability of sulfate anions to coordinate by the oxygen atoms to the cation of central atom allows the binding of the polymeric chains with each other.

7

Authors: Aurelia CRIVOI, Iurie BACALOV, Elena CHIRIŢA, Ana MĂRJINEANU, Irina BACALOV, Iulian PARA, Lidia COJOCARI, Galina CERNEI, Ion GHERMAN

Thyroid pathology in Moldova ranks second among endocrine pathologies and accounts for 32% of all endocrine patients (as of 2006). In 2000-2006 the number of patients with thyroid pathology increased twice. Clinical primary hypo¬thy¬roi¬dism deals accounted for 6.5% of the female population and 1.2% of the male population. The women suffer from hypo¬thy¬roidism 10 times more often than men. Two points maximum occurrence of this pathology are puberty and the age of 50-80 years. These people are treated by a combination therapy, custom each time, for different causes may be hypo¬thy¬roidism. The research literature we can mention that thyroid hormones have a major influence on intermediary metabolism in various pathological conditions. Most thyroid diseases are associated with defects not only of homogenizes, secretion, transport or degradation of thyroid hormones, and defects in the metabolism of lipid, protein, carbohydrate, hydro mineral.

7

Authors: Ina BIVOL, Ana BÎRSAN

In this study, the genetic diversity of Glycine max L. was evaluated using inter-simple sequence repeat (ISSR) markers. Intraspecific polymorphism of soybean landraces was 25%. The molecular marking revealed the specific fragments, which can be used as molecular markers in soybean genotyping. On the bases of ISSR analysis, the genetic distances were esti¬mated, and dendrogram reflecting genetic similarity was constructed. Genotyping of soybean germplasm is useful tool for modern breeding programs which are aimed at the development of new cultivars with desirable traits.

8

Authors: Maria GONŢA, Angela LIS, Larisa MOCANU

In most urban areas of the Republic the access of the population to public sewer service is limited and does not exceed the level of more than 50%. The number of sewage systems which serve urban and rural areas in RM currently remains quite low and varies by region. The statistical data shows that the number of sewer systems in the country is decreasing and technical condition of these systems does not improve considerably. Compared to urban areas, in rural areas the situation regarding waste water treatment is deplorable. The data indicate that water supply systems are not built in parallel with sewer systems and wastewater treatment. The lack of these combined systems has a detrimental impact on environment, especially for soil, surface water and groundwater. Untreated water contaminated with an exceeded content of chemicals is being discharged into rivers and may have a negative impact on the process of self-purification. Under the influence of pollutants the concentration of dissolved oxygen decreases. Deficiency of dissolved oxygen in water could have negative effects on biota and even may cause illness or death to fish.

14

Authors: Mihai MÂRZA, Natalia BURACINSCHI, Vladislav GRATI, Eliza MÎRZA, Iulian MAMAI

Based on retrospective analysis was found that synanthropic flora and vegetation of Moldova and partly adjacent territories can be divided into the following stages of evolution: 1. Initiation step, from the first half of the XVI century – first half of the XIX century. Lists of plant species within certain geographical or administrative areas were published. 2. Physical and geographical research step, from 60s of XIX century and 20s of the XX century. Floristic researches were completed with phytogeographical investigations. 3. Ecological-phytocenologic research step, triggered more pronounced at mid. XX century – is the current stage. It manifests through achievement in floristic, phytogeographic and ecological research methods.

3

Authors: Elena SAVCA, Ana BÎRSAN, Maria FRUNZĂ, Ludmila ROMANIUC

We studied the action of humic substances (LG) on the oil content in soybeans. We concluded that the soybean treatment before planting with LG concentration 0.5% increases the oil content with 1.88-15.21% comparing with the witness, with the exception of Colina kind. The LG concentration of 1.0% decreases the oil content at all studied kinds.

4

Authors: Irina STRATULAT, Victor ŞALARU, Sergiu DOBROJAN

Study the quantity of heterocysts allows discerning the biological nitrogen fixation process by blue-green algae. The volume and number of heterocysts depend on the quantity of fixed molecular nitrogen, the algae species and the composition of nutritive medium. At the cultivation in Drew medium the volume of heterocysts varies between 60.81 and 81.94 μ3, while in the Fogg – 58,96-86.59 μ3 but in the Gusev – 54,68-88.98 μ3. Number of heterocysts supports the oscillations during on the period of growing, being minimum at the beginning and highest toward the end. The maximum frequency of heterocysts was detected of cultivation in Drew medium (11.7%), followed by 10.97% in the Fogg and 9.80% in the Gusev.

4

Authors: Alexei MAFTULEAC, Nina ŢÎMBALIUC, Petru SPĂTARU

The changes in the same physicochemical characteristics of water samples during centrifugation were detected. It was noted that these changes depend on the centrifugal acceleration and can be caused by the degree of aeration in the uncovered samples, and possible, by the restructuring of the water clusters under centrifugal pressure in the covered (closed) samples. In article was also expressed the idea that studying the behavior of liquids (solutions) in the centrifugal field can expand our knowledge of these objects.

5

Authors: Veronica DONICA

Has been studied the action of Apiphytostimulin remedy on biochemical and hematological blood indices of goats during pregnancy. Our results demonstrate an attenuation effect of the physiological stress of pregnancy and parturition in goats as a result of using Apiphytostimulin remedy.

5

Authors: Tudor STRUTINSCHI, Maria TIMOŞCO

In experiments on laboratory animals were tested three biologically active food additives: Presan, Stim and Medulac-WM, of which “Stim” was developed by members of the IFS of ASM. It was found that the food additive “Stim” had the most pronounced sanobiotic effect, which was positive impact on the growth of animals and their intestinal micr¬olora in the period of the experiment, and in the first 10 days after the exclusion from a ration. Bioactive food supplement „Stim„ is recommended to improve the capacity sanogenic potential of rations, as assisting strengthening of health and optimal maintenance of intestinal bacteriocenosis.

5

Authors: Gheorghe FLORENŢĂ

Preliminary phases of maturation were investigated germination of downy oak acorns. It has been shown that immature acorns located on synthetic medium without phytohormones manifest ability to germinate, but its germination increases as they unfold ripening a period, peakingin early September. As a heliofile species, shade even at low levels, profoundly affects the processes of growth in height of seedlings.

5

Authors: Ştefan ROBU, Raisa JITARU, Galina DRAGALINA

The objectives of our research were to obtain macromolecular compounds with useful properties for manufacturing of things needs for hospital use. There was realized the synthesis of polymers containing the active functional groups that have chemical bonding (graft) with antibacterial preparations belonging to the Group of penicillin. Thus, as basic material, has been obtained and have been examined copolymers from styrene, butylmethacrylate and methacrylic acid.

6

Authors: Aurelia CRIVOI, Elena CHIRIŢA, Iurii BACALOV, Irina BACALOV, Ana MĂRJINEANU, Doina CASCO, Ana ROTARU

A special interest represents the study of certain preparations that may influence the evolution of diabetes or alleviate to a certain extent the metabolic disorders. Currently the phototherapy is considered a scientific procedure and concept in the justification of on the new basis of to the ancient art of treatment using medicinal plants, becoming an interdisciplinary science, which involves the collaboration between chemotherapy, organotherapy, ionotherapy, psychotherapy, food hygiene.

6

Authors: Natalia CHISELIŢA

In this paper are presented results of the study of influence of the duration of irradiation by millimeter waves with extremely high frequency (53,33 GHz­λ=5,6 mm) on the development of population and viability of S. cerevisiae CNMN-Y-20 yeast strain. It was established that the irradiation of yeast strain by millimeter waves with extremely high frequency during the 5, 10, 15, 20, 25 minutes has conducted to the significant increasing of amount of generations (with 2,5-3,3 generation) and of the viability of the strain in comparison with control during the first 6 hours of cultivation. Maximum of stimulation of viability (with 56,2 %) was revealed after 24 hours of cultivation in samples irradiated during 20 minutes.

6

Authors: Andrei SHUTOV, Angela RUDAKOVA, Natalia KLIMOVA, Natalia LAPTEVA, Ellina MAKAEVA, Karl WILSON

Limited proteolysis was found to occur during papain proteolysis of the oat 11S globulin. The initial limited proteolysis is extremely quick and consists of an N-terminal and C-terminal truncation of -chains and C-terminal truncation of -chains. Further on, the -chain remnants are cleaved into similarly sized N-terminal and C-terminal fragments. Similar pattern of the globulin limited proteolysis was observed during germination of the oat seeds. Functional role of limited proteolysis in degradation of seed 11S globulins is discussed.

7

Authors: Elena CHIRIŢA, Aurelia CRIVOI, Iurii BACALOV, Victor CIOCÎRLAN, Irina BACALOV, Iulian PARA, Ana MĂRJINEANU, Maria PRODAN

Temperament refers to the energetic and dynamic dimension of the personality and expressed by the peculiarities of intellectual activity, emotional and external behavior: language and motor skills in conduct. The work is to establish the relations between the temperament in children and how to respond to stimuli and stress.

7

Authors: Eduard COROPCEANU

New zinc and cadmium mono- and binuclear complexes containing dioxime ligands were synthesized. Due to Zn and Cd affinity for oxygen and nitrogen atoms a high diversity of complexes containing dioxime ligands with varied composition and interesting architecture can be prepared. The use of bridging ligands offers good perspectives for assembly of bi- and polynuclear compounds, study of various components impact on synthesis and opens new directions for oriented and programmed synthesis of compounds with predictable properties. In such a way the use of some chelate ligands which coordinate with metal perpendicularly to the axis connecting metal atoms make lighter the crystalline structure and create cavities which can be embedded with small molecules.

9

Authors: Светлана ГАРАЕВА, Влада ФУРДУЙ, Анна ЛЕОРДА, Галина РЕДКОЗУБОВА, Галина ПОСТОЛАТИ, Анатолий МАНТОПТИН

The study of profile modification of free amino acids in serum and urine of children 2-6 years old with diagnoses of autism and cerebral palsy found that for both pathologies characterized gipoaminoatsidemiya, a significant increase in the ratio of braking/exciting CAA reduction ratio of essential/nonessential FAA and severe hyperammonemia, reduced urea synthesis. Both diseases are accompanied by a pronounced imbalance of sulfur FAA, which allows them to be used as a nonspecific marker of the level of health.

10

Authors: Valentina BULIMAGA, Liliana ZOSIM, Maria PISOV, Valeriu RUDIC

This article provides an overview of the methods of extraction, isolation, detection of bioactive secondary metabolites produced by cyanobacteria, including microcystins, anatoxins, lipopolysaccharide, as well as recent studies con¬nected to the properties of cytotoxic, anticancer, antimicrobial, antibacterial of secondary metabolites produced by some cya¬nobacteria.