The coordinated estimations of speed convergence of centered difference schemes for system of equations of Maxwell
Utebaev D., Sadikova L.U., Asanova U.S.
Karakalpak state university, Hukus
Nukus state pedagogic institute
SUMMARY
In the present paper, we investigate the accuracy of difference schemes for first-order hyperbolic systems for the case of two-dimensional equations of Maxwell under weak smoothness assumptions on the solutions of the differential problem. A new scheme is constructed for the Maxwell's system in a rectangular spatial region with various types of boundary conditions. Developing the apparatus of stability theory of difference schemes, we obtain an a priori error bound in a norm weaker than L₂. Using this bound and the Bramble-Hilbert lemma, to estimate the approximation error, we prove O(т^m + h^m) convergence of the scheme to the solution of the differential problem from the class W₂^m(Q_T), m=1,2. Besides, we obtained the accuracy of bounds in the interpolations space.

About one way of creation of single-step methods of approximate solution of the initial value problem for ordinary differential equations of first order
Otarov A.O., Urazymbetova E.P., Tadzhibaeva N.H.
Karakalpak state university, Nukus
SUMMARY
The work produces a very general technique to build single-step approximation method of Cauchy problem solution for ordinary differential equations of the first order. Proposed technique was used to build some particular one-step methods of the first, second and third accuracy order. Set of these methods could be easily expanded. Is is shown that local error is close to h2n+1. Computational algorithms of these methods are simply coded.

Vegetation cover as an influence factor of the environmental conditions improvement in the South Aral Sea Basin
Tleumuratova B.S.
Research institute of natural sciences, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
The paper presents results of vegetation impact simulation using developed four-layer model. Effect of the vegetation cover onto the ecological-meteorological characteristics of the South Aral Sea Basin had been reviewed. Deflation-protective action of the vegetation is noted. Also plant cover decreases soil desiccation. This action lowers an intensity of soil salts capillary transport into diurnal surface. Qualitative estimation of the calculated impact validates important role of this influence.

Local scour near a pier of footbridge
Baymanov K.I., Kamalov A.Z.
Karakalpak state university, Nukus
SUMMARY
The paper considers some principal methods of local wash-out intensity calculation for dike-bounded flows. Erosion pit depth after local wash-out is determined according to a water flow characteristics. Some recommendations regarding local wash-out prediction in the vicinity of bridge bearing piers are given.

Crystal structure and conducting properties of organic compounds on the basis of Te-containing donor molecules.
Seytimbetova G.1,, Narymbetov Br.Zh., Kurbanbaev I., Narymbetov B.Zh.
1) Complex Institute of natural Sciences of Karakalpak Branch of the Uzbekistan Academy of Sciences
2) Karakalpak state university, Nukus
SUMMARY
X-Ray structure analyses of new organic compound on the basis of Te-containing donor molecules with the different anion complexes have been performed and their conducting properties on single crystal samples were studied. The studies of their electric resistivity testify that these compounds keep metallic properties down to temperatures 4 K. On the basis of structure studies it shown that the donor molecules in the crystal structure forms three dimensional network of close contacts. Also there were found the presence of positional disorder of anion complexes in the crystal structure, but they influence to the conducting properties of the samples were insignificant.

Mineral fertilizers production using raw salts in Karakalpakstan: problems and prospects
Bauatdinov S., Bauatdinov T.S., Todgiev S.M., Erkaev A.U., Allaniyazov D.O.
1.Research institute of natural sciences, Karakalpak branch of Uzbek Academy of sciences, Nukus
2.Institute of General and Inorganic Chemistry, Uzbekistan Academy of Sciences, Tashkent
3.Tashkent Chemico-technological Institute, Tashkent
SUMMARY
Mineral resources and chemical compounds of the salt deposits in Karakalpakstan had been studied. Physical and chemical parameters of the salt ores were explored to find a road to potassium fertilizers production. Optimal conditions for the potassium fertilizers out-turn from local salt minerals had been established. These results are scientific background for technology development. The findings simplify potassium fertilizers production from the local raw materials.

Estimation of auto purification intensity of artificial water objects in wetlands of arid zone
Konstantinova L.G., Atanazarov K., Lee T.P., Razakov R.M.
Research institute of natural sciences, Karakalpak branch of Uzbek Academy of sciences, Nukus
Nukus state pedagogical institute
NKC "Ekoservis", Tashkent
SUMMARY
The article presents the peculiarities of the auto purification processes in the artificial ponds of the arid zones of the Republic of Karakalpakstan. Bacterial plankton is very active, characterized by great potential, has a high level of functioning. Micro flora activity is a leading factor of auto purification processes of ponds. Complex assessment of water ambience parameters is given and auto purification and bacterial community role are presented graphically. The system used on creation artificial wetland - pond from communities of cattail and bulrush, capable to function as cleaning plateau for polluted water of Amudarya river.

Zoning of the territory of Karakalpakstan for introduction of woody plants.
Otenov T.O.
Botanical Garden of Karakalpak Branch of Academy of Sciences of Uzbekistan, Nukus
SUMMARY
The article presents data on botanical zoning to introduce new species of woody plants on the territory of Karakalpakstan. The territory of Karakalpakstan is divided into 3 arboricultural districts and 4 sub districts by the author. The characteristics of these districts are given. They coincide with the agro climatic districts and geobotanical areas. The species of introduced plants are offered for each district.

The modern seed-growing condition
Mamarahimov B.I.
Republic station of tne primary seed-farming, seed-growing of agricultural crops, Tashkent
SUMMARY
There are important changes In the seed-growing researches. Changes in progeny, are limited and characterized some differences that proves impossibility full and absolute monotony. It's necessary to develop and organise system of the duplication seeds of the new varieties, allowing bring the period of the introduction in production during 3 years since moment of the registry-in variety in State list. The result of experimental studies to equivalence elite seeds are recommended simple methods of the creation of elite — mass selection, resoling, negative selection and est. The theoretical approaches required for checking gene type of variety and realization potential of the production in practice.

Ontogenesis of Crambe oriental's L. in agricultural conditions
Baltabaev M., Kabulbaeva B., Mirzamuratova J.
Nukus state pedagogical institute
SUMMARY
The article deals with the data on ontogenesis of Crambe orientalis L. (Sea Kale) in agricultural conditions. Average sizes of seed-lobes and sprouts, as well as weight of seeds are presented. Age stages are discriminated and described distinctly. A process of the ontogenesis is illustrated with sketches. Sea Kale plant development variations for agricultural cropping as well as for natural conditions of the Turkestan ridge had been given.

The adaptive characters of reproductive organs some Climacoptera Botsch. (Chenopodiaceae Vent.) species to xerothermal condition and to saline
Khamraeva D.T., Matyunina T.E.
“Botanica” research center, Tashkent
SUMMARY
The adaptive signs of flower structure of some Climacoptera species are given. Large parenchyma water reserving cells in anther and ovary wall indicates to halofactor. Downiness of perianth, the morning type of flowering indicates adaptation of flower structure to xerofactor. The labile system of pollination promotes to prosperous formation seeds. Multilayer endothecium in the wall of anther accelerates opining its walls.

The life cycle of nematodes of Onсhocerca lienalis (Stiles, 1892) Onchocercidae: Onchocerca
Saparov K.A.
Tashkent state pedagogic university
SUMMARY
The paper are dealing with the study of the lifecycle of the Onсhocerca lienalis nematode - parasite of a cattle. There are some insects (Odagmia ornata, Friesia alajensis and Simulium flavidum) established as specific intermediate host of the parasite in Uzbekistan. Contamination of these gnats larvae with onchocerca demonstrates variable character, being associated with a phenology of these sanguivorous gnats. Insects, containing larvae of the nematodes, are infecting an animal as a cattle bitten. Preventive measures to exclude the host gnats from nematoda lifecycle are important for the prophylaxis of the invasion.

The influence of total exdisteroid containing preparation from Rhaponticum integrifolium on some immunological and hematological indices in experimental animals
Shahmurova G.A., Hushbaktova Z.A., Syrov V.N., Batyrbekov A.A.
Tashkent state pedagogic university
Institute of plant chemistry, Academy of sciences of Uzbekistan, Tashkent
Immunology institute, Academy of sciences of Uzbekistan, Tashkent
SUMMARY
The mixture of exdisteroids had been extracted from the Rhaponticum integrifolium plant. This mixture contains alpha-exdizon, 24 (28)-dihydromaxisteron, exdisteron, integristeron А, vitikosteron E. Injection of the preparation and simultaneous immunization of white mouses with ovine erythrocytes intensified a formation of antibody forming cells in spleen of a mouse. The preparation promotes cell-formation in central and peripheral organs of immunity: thymus, marrow, lymphatic nodes of the mesentery. There was stimulation of erythro- and leucopoiesis. The studied preparation exceeds Immunal(tm) as immunostimulating remedy.

Animals as an integral part of South Aral Sea region ecosystem
Kultimuratova G., Mambetullaeva S.M.
Nukus state pedagogic institute
Research institute of natural sciences, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
The paper concerns the role of animals as a part of South Aral Sea region ecosystem. Areal and biotopes of mammals are characterized. Authors demonstrates that Aral Sea desiccation brakes local ecosystem balance and causes aridisation. This phenomena promotes anthropic desertification. Biodiversity protection as an important issue of the ecosystem resilience is general agenda for the South Aral Sea region.

Rainbow trout growth in intensive culture under conditions of Tashkent region in Uzbekistan
Juldashov M.A., Kamilov B.G., Karimov B.K.
Institute of zoology, Academy of sciences of Uzbekistan, Tashkent
SUMMARY
Rainbow trout (Oncorhynchus mykiss) is promising aquaculture species, new for Uzbekistan. Trout growth in raceways in promountain areas of Tashkent region was studied. Fish were fed by balanced feed protein content in starter feed was 40%, in grower feed — 34%. Eyed eggs were received from «Troutlodge» hatchery (USA) on 6th of December 2008. Eggs and larvae were kept in hatchery supplied by underground water from artesian well with stable temperature 14°C. Fry (2-5 g) were stocked to raceways supplied by water from irrigation canal. In Spring and in Autumn water temperature in canal varies 9-14°C, in Summer — up to 18°C. A part of trout received table size (250 g) in the end of July, main part — in second half of August, fish with slow growth — in second part of September Fish productivity of raceways was 35 kg/m3. Peculiarities of fish development, growth and management activity are given in article.

Enzyme-promoted insulin degradation
Tawmuratova G.N., Junusova J., Rakhimov M.M.
National University of Uzbekistan, Tashkent
SUMMARY
The mechanism by which insulin exerts its biological effects is still unclear. Although binding to the insulin receptor is an essential step for insulin degradation, the mechanism by which the enzymes degrade insulin is unknown. Occurrence, properties and the role of enzymes catalyzing reaction of insulin degrading are reviewed with particular emphasis on glucose transport. An important role of the insulinaza in the hormone stable concentration and degradation of insulin are discussed.

Consumer protection in market economy and meaning of the category "a society"
Imamov U.
Presidential Academy of State and Public building of Uzbekistan, Tashkent
SUMMARY
The paper concerns some issues of market competition control. The goal of the control is consumer's rights protection. Legal framing of civic fundamentals on consumer protection had been analyzed. Effectual law enforcement process of the protection is described. Current situation at various sides of consumer protection in Uzbekistan had been reviewed.

Асtual issues of improvement legislation on insurance activity
Aminjonova M.A.
Нigh training courses of the Prosecutor General's Office of Republic of Uzbekistan
SUMMARY
The actual issues of improvement of legislation on insurance activity are considered in this article and the next propositions are advanced: to warrant the territorial bodies to pay off the insurance compensation for the purpose of making effective and quick pay off insurance compensation; to the article 948 of Civil code: establish an obligation of the insurer in early termination of the contract on his initiative, because this article establishes only the insurer obligation; to adopt an insurance code in the aim of gathering all norms of insurance activity in one code; adopt the law "On civil law liability of the professional participants of insurance market" that stipulates civil law liability of the professional participants of insurance market; adopt the law of the Republic of Uzbekistan “On fulfillment of compulsory insurance”.

Regional issues of social and economic development of Northwest Uzbekistan (with economic district of low course of Amudarya river as an example)
Umarov E.K.
Karakalpak state university, Nukus
SUMMARY
The paper analyzes territorial and industrial generality of the political districts in the low course of Amudarya river. Some idle branch-wise reserves are revealed and implication of these reserves into industrial up growth had been suggested on the strength of current social and economic development. The role and the place of the region in Uzbekistan economy are determined. Agriculture, industrial sector and transport infrastructure had been studied using quantitative and qualitative analysis. Relation links inside the regional interindustry system are illuminated the on the base of empiric cases. Its further development as integral industrial entity of the region is established.

To the question of motor transport and roads for it and their state in Karakalpakstan during the 30ies of the 20th century
Piskunova I.
Research institute of the humanities, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
The photos from the home archive excited interest to the history of motor transport roads of Karakalpakstan in the 30ies of the 20th century. During this period construction of such roads in Karakalpakstan began. There were many problems in the course of it: lack of specialists (engineers, drivers, technicians, ets), motor transport and building equipment. Most of the roads had no any pavement (or they had soil covering). Because of the poor supply with construction materials the saxaul plants coated with sand were used for building roads.

Development of library collections with information-library and information-resource centers
Sotvoldieva B.H.
Academy of Sciences of Uzbekistan, Tashkent
SUMMARY
Establishing of the modern information, library and resource centers conduces to improvement of scientific, intellectual and occupational potential of the population, especially youth. In this course information library centers turns to methodical headquarter for regional libraries from various departments and institutions. Also information library centers can accommodate information services for users using modern information technologies. These centers do large-scale projects on regular update and enrichment of book collections, digitization of paper books. The centers render everyday information support of readers.

Friendly and relative contacts of Kazakhs and Karakalpaks as a source of formation of Kazakh folklore and literature on the territory of Karakalpakstan
Tortkulbaeva T.
Nukus state pedagogical institute
SUMMARY
In this article the author tries to show friendly and relative contacts of Kazakhs and Karakalpaks on the base of historical events which are held in the XVI-XVIII centuries. Literary and folklore contacts between these nationalities are the interior developing laws of literature and art, and also spiritual-aesthetic phenomena of society. When we analyze this problem we see that the background of Kazakh and Karakalpak literary and folk relationships connect with ancient friendly and relative contacts of these people. A famous patriot, poet, democrat and humanist of Karakalpak people Berdakh in his work "Ancestry" connects the appearance of Kazakhs and Karakalpaks with the epoch of messengers of God and describes the relationship of these people. New life, a new mode of life and new problems of Kazakhs which were endured with Karakalpaks were the main social everyday factors in development of Kazakh folklore and literature, a new direction, a new theme, a new content and forms in Karakalpak region.

The structure of vowels in Karakalpak and Kazakz languages
Asanova J.E.
Karakalpak state university, Nukus
SUMMARY
In the present paper the sound system of Karakalpak and Kazakh languages are viewed using comparative analysis. Sound systems of both languages are very close, but in particular qualities and relational quantities they are different. Every background phonemic structure of these languages has own specific features. Analysis of speech material has been worked out in comparison mode using the set of vowels examples.

The dialogue form of speech of the characters in Karakalpak novels
Bekbergenova Z.U.
Research institute of the humanities, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
The paper presents an attempt to study poetics of pencraft in the creations of Karakalpak literature of last years. Dialogues from K. Rakhmanov's novel «The fiance in the age of the prophet» and M. Nizanov's novel «Enemy» (2010) were used as a material to analyze interlocutions of characters. Besides large using of the dialogues is an attribute of a drama, so study of a dialogue as a narrative touch in a novel is important. Author separates all dialogues into pure dialogue, mixed dialogue and polyphonic one. The problem of classification of dialogues attracts great interest in modern prose studies.

The sources of Karakalpak detective genre
Allamuratova Z.M.
Research institute of the humanities, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
The paper concerns a problem of a detective novel appearance in Karakalpak literature. Detective genre of Karakalpak fiction is studied for the first time. Impact of folklore on a detective novel development is analyzed. Author makes conclusion that folklore tradition constitutes fundamentals of a detective genre. Some thoughts of other philologists regarding connection between folklore and a mystery novel had been reviewed.

Poly-predicative constructions with infinitive in dependent predicate
Dawletov M.
Research institute of the humanities, Karakalpak branch of Uzbek Academy of sciences, Nukus
SUMMARY
Then study reckons features of poly-predicative constructions with infinitive in dependent predicate in modern Karakalpak language. Comprehensive volume of reference data on this issue in other turk languages was sifted. Peculiarities of verbal nouns usage in infinitive form had been discovered. Also frequency of this form had been determined. The research explored big corpus of actual Karakalpak language data.

A system forming discipline "Age-dependent physiology and hygiene" as a mean to arrange biological culture of a health among students
Sharipova D.D., Shahmurova G.A., Arbuzova T.L.
Tashkent state pedagogic university
SUMMARY
The paper considers teaching of the system-forming course "Age-dependent physiology and hygiene". This course is a part of fundamental biological disciplines and one should overcome some contradictions and limitations for effective teaching. There is an emphasis on the concernment of health-oriented activity during the course teaching. It is important to attract attention of the students to the increasing of significance of socio-cultural component of a health. The goal of didactic system in medical-biological education is formation of valeological and biological culture. This approach meets requirements and can surmount mismatchings in content of medical-biological disciplines.

Design optimization for axial-symmetric conoid-shaped shells
Yakubov S.H.
Karhi state university
SUMMARY
The paper considers the problem of optimization of the conoid-shaped shell. The results of the optimization of conoid-shaped shell show that under small cone corner a load is redistributed spatially uniform, i.e. one got more rational use of the mechanical structure.

Classical literature and a theater in the period of independence
Rizaev A.
Creative and production association, Ministry of Cultural and sports affairs of Uzbekistan, Tashkent
SUMMARY
The article is dealing with the centuries-old tradition of our literature and history of art. This heritage is an integral part of our cultural life. There are large-scale state-supported practical studies to convey a priceless legacy, inherited from the classics of our literature, to the people. This artistic heritage should be imparted with all its glory and in original form. These studies evoke many sacred names of the creators whose spiritual personality enroots traditional art of the nation. Now we are reconsidering the profundity of many articles and dissecting the true aim of various stage reviews from the past. We believe that this critical efforts is useful work on the pass of historical truth recovery. This activity promotes further development of a theater during Independence years.