Among rheumatic diseases reactive arthritis occupies one of the leading places in terms of prevalence and it is one of the most common chronic inflammatory joint diseases. When the process is chronic, destructive processes in the joints develop up to ankylosing. This article presents the results of studies on the features of the clinical course of reactive arthritis of post-enterocolitic and urogenital forms. The study was carried out in 120 patients with an established diagnosis of reactive arthritis.
This article the author analyzes the characteristics of methods of regulation of cross-border insolvency. The article highlights the importance, advantages and disadvantages of regulating cross-border bankruptcy.
This article is devoted to the current problem of developing innovative activities in the building materials industry. The country's building materials industry has a significant resource potential, the use of which requires innovative development of the industry. With this in mind, the article proposes innovative directions for the development of the industry under consideration in order to better meet the needs of the economy in modern building materials.
The Cold War was not only traditional in international relations next phase of the struggle for world domination, but also an ideological war aimed to impose on the opposing powers a certain value system, social structure, political regime, etc. As a result the ideological conflict of the opposing powers became an important component of the Cold War. With the end of the Cold War the problems of «end of history» and the “end of ideologies” were actualized on the West. It became about an axiom that the world politics lost its ideological dimension. In fact, however, ideological component is deeply integrated into the emerging «new» world order. Even the dominance of Western countries in the emerging system of international relations was legitimated by the postulates of neo-liberalism. The coming to power in the USA of president D. Trump and changes in American foreign policy stress a deep transformation in the modern system of international 51 relations. Unconditional dominance of the liberal paradigm in global scale is gradually coming to an end. This process is accelerated due to the completion of the «unipolar moment» in world politics and process of step by step formation of a polycentric world order. The world is entering to a turbulent era. And one of its main features will probably be decline of ideology influence and the strengthening of political realism as an intellectual dominant in making decisions in dynamic and unclear international environment.
The article presents the views of foreign and domestic scientists on the concepts of innovation and its essence. A detailed theoretical analysis of the forms of organization of innovative processes and the main stages of innovative processes is given. As a result of the analysis, the term “innovation” was defined by the author. The strategic directions of the effective organization of innovative processes in the Republic of Uzbekistan are presented.
One of the most frequent operations in surgical dentistry is the extraction of teeth, which leads to defects in the dentition that require orthopedic treatment. At the same time, the natural atrophy of the alveolar process that occurs at the site of the extracted tooth complicates the process of orthopedic treatment, especially when it is necessary to use implants or a removable denture Therefore, there is a problem of maintaining the height of the alveolar ridge after tooth extraction by preventing its atrophy
This article examines the features of the genre “travelogue” in modern Arabic short stories. “Travelogue” is one of the oldest and most varied genres. During the many thousands of years of human history, and especially after the appearance of written literature, thousands of works on the subject of travel were created in the languages of the peoples of the world. The genesis of the genre is the result of the synthesis of the traditions of folklore and written literature, where works of folklore (e.g., fairy tales) were created and in written literature (e.g., ancient travel notes), in the center of which there is a traveler-narrator. As genre compositional features of travelogue, you can point out that the focus is on the image of the traveler-narrator and the presence of the fact of travel (changing in space and time movement in a certain direction), and it is noteworthy that the traveler-narrator stands in the status of an observer and compares what he saw in a foreign land with the situation in his native country. Although these main features of the genre were preserved, a number of other manifestations of travelogue appeared in the course of the development of literature. If in Uzbek classical literature the works describing the impressions of travel are called “sayokhatnoma”, then in Arabic literature this genre is called “rihla”. Studying modern Arabic fiction, you can trace how writers create works in the genre of travelogue, combining elements of the genre with the genre of the short story. A number of modern and contemporary Arab writers, such as Muhammad al-Muwaylihi, Sunallah Ibrahim, Jamal al-Ghitani, and Abdurahman Majid al-Rubeyi, used features of the travelogue genre in their short stories and novels. Among them can be the Syrian writer Abdus-Kalam Al-Ujayli (1918-2006), whose travel collections, such as Journey to Europe and The Call to Travel, consist of short stories that reflect the peculiarities of the travelogue genre. The collections Journey to Europe, Call to Travel comprise 22 short stories about travelling. Abdus-Salam al-Ujaili depicted with high artistry the greatness of his motherland Syria, where he was born and raised, showed its beautiful nature, the way of life, occupations, religion of the population, as well as he gave a description of some cities, their history, and shared hois impressins of unspeakable Paris after a trip to Europe.
Topicality and demand of the theme of dissertation. One of the actual problems of modern physical chemistry and macromolecular chemistry is the study on the development of the fundamentals of synthesis of functional polymers with ion-exchange and complexing properties.
Anion exchange and complexing compounds based fibrous materials have a high specific surface area, which provides a high possibility of sorption and desorption processes. They arc especially effective in removing toxic substances, even at very low content of the latter from the air and water pollution. Of particular interest is the acrylic fiber "Nitron", which is produced by JSC "Navoiazot" (Uzbekistan).
In the Academy of Sciences of the Republic of Uzbekistan, Tashkent Institute of Textile and Light Industry conducted research on the development of fibrous ion exchange materials based on acrylic fiber "Nitron" but they have not been brought to its logical end. In addition, when these studies neglected the study of the physicochemical aspects of the preparation of these materials.
In developing the fundamentals of ion exchange materials obtaining a lot of attention paid to the study of physical and chemical aspects of the synthesis and properties of these high-molecular compounds. These studies due to the fact that they allow you to adjust the processes of synthesis and, therefore, necessary to obtain polymers with required composition and with complex specific properties.
As noted above, to date, no attention was paid to the study of the physicochemical foundations of anion exchangers and polycomplcxons, due to applied research conducted to date in this field of research. In this regard, the study of physical and chemical principles of bases of creation, and the properties of anion exchangers and polycomplcxons based on acrylic fiber "Nitron" arc actual both from a theoretical and practical point of view.
Demand perform of the dissertation is characterized by the fact that modern worldwide technology for extraction of non-ferrous and precious metals can not be realized without the use of ion-exchange materials. These techniques use mostly granular sorbents, while fibrous sorbents comprise just 2-3 % of the ion exchange materials used . Using technology employing ion exchange material from algae and natural brine deposits of oil and gas recovered to 90% of iodine and bromine, lodinc-containing sorbents arc used for disinfection of drinking water from microorganisms and extraction of mercury from wastewater and gas emissions. They can be used for concentrating the processing solutions and biologically active substances in the preparation of catalyst systems nanoparticles metals. It should also be noted that Uzbekistan hitherto not been established as industrial manufacture granular and fibrous sorbents, although such polymers arc widely used in industry.
The purpose of this study is to identify the physico- chemical characteristics of the formation and properties of anion exchangers polycomplcxons based on acrylic fiber " Nitron ".
Scientific novelty of disscrtational research consists in the following:
in the first time studied the kinetics of the interaction of acrylic fiber "Nitron" with nitrogen-containing bases in aqueous and organic media;
shown that due to the high surface area fibers arc modifiable , the reaction rate depends on the concentration of the nitrile groups of the polymer being in the solid surface;
proved previously identified mechanism of the catalytic action of small amounts of hydroxylaminc on the process of modifying of fiber " Nitron " with nitrogen-containing bases;
in the first lime developed a method for producing anion exchangers branched structure by sequential treatment of acrylic fiber " Nitron " with cthylcncdiaminc and dichlorocthanc;
found that the interaction of PAN - fibers with hcxamcthylcnc- and ethylene diamines formed anion exchange fibrous materials having in its composition as a weakly basic and strongly basic functional groups ;
in the first time obtained new polycomplcxons with ampholytic properties by reacting maleic anhydride with amine -modified polyacrylonitrile fiber " Nitron " or by hydrolysis of residual of the nitrile groups modified with diamines of acrylic fiber "Nitron";
established values of the thermodynamic equilibrium constants of adsorption of ions Cr (VI), Си (II), halogens, Arsenazo (III) by synthesized anion exchangers and polycomplcxons and alteration in thermodynamic functions of the process testify to high sorption capacity of these ion-exchange materials with respect to the sorption ions;
Conclusion
1. Values degree reaction of the nitrile group and a nitrogenous base, the activation energy of the process shows that the process of modifying fiber " Nitron " nitrogen-containing bases subject to the usual regularities observed in homogeneous reactions. This effect is due to a high fiber surface area to be modified, allowing the reactants to facilitate access to the nitrile groups of the polymer. (Physical chemistry, High molecular compounds).
2. Kinetic studies of the reaction of acrylic fiber " Nitron " with diamine (hexamethylene and ethylenediamine) showed that the change of physical and chemical parameters of the modification process can be controlled sorption properties, chemical resistance and the strength of the anion exchangers due to network structure of the polymer. It has been established that this modification "Nitron" produces strongly basic anion character especially in organic media. Strongly basic anion exchangers possibility of obtaining a high sorption capacity with graft polycthylcnpolyaminc chain reactions revealed in fiber modification "Nitron " ethylenediamine in the presence of dichloroethane. (High molecular compounds, Physical chemistry ).
3. IR - spectroscopic and analytical determination of the formation of intermediate amidoxime groups in the polymer chains and free hydroxylaminc after substitution reaction proved previously proposed mechanism of the catalytic action of hydroxylaminc on the process of chemical modification of acrylic fiber " Nitron " nitrogen-containing bases . ( Physical Chemistry).
4. Developed conditions of synthesis polycomplcxons reacting maleic anhydride with modified by hcxamcthylcncdiaminc acrylic fiber "Nitron" and with of hydrolysis of residual nitrile groups modified by hcxamcthylcnc- and cthylcncdiamin of acrylic fibers . (High molecular compounds, Physical Chemistry).
5. Alkalinity obtained anion exchange resins depends on the nature of their functional groups. Strongly basic anion exchangers have in their composition cyclic amidine groups and they arc formed by the reaction of polyacrylonitrile fiber with a diamine. The specific surface area obtained fibrous sorbents exceeds by two orders of known surface area granular ion exchange resins, and their crosslinking rate is up to 100 nodes per macromolecule polymer. ( Physical Chemistry )
6. Kinetics and thermodynamics of the sorption of various inorganic and organic ions obtained polycomplcxons sorbents showed that ions of Cr (VI), Arsenazo (111) can be sorbed strongly basic anion exchangers only, and the process of sorption of copper (II) with polycomplcxons occurs not only due to the ion exchange, but also due to chelation. ( Physical Chemistry ).
7. Developed the conditions obtaining bromide complexes of polymers and kinetics, thermodynamics of the sorption halogen anion in synthesized materials was studied. It is shown that the lower the stability of the ion [Bn]’ for ion [J3]'than the ability to form such molecular chlorine ions leads to the fact that almost no molecular chlorine is adsorption, and molecular bromine is absorbed to a lesser extent than the molecular iodine. (Physical Chemistry ).
8. Combined developed iodinated anion exchange materials based on acrylic fiber " Nitron " and chitosan. Insertion of the iodinc-containing chitosan materials, leads to an increase of absorbent capacity. Combined antibacterial dressings have a pronounced anti-inflammatory and antibacterial effect, arc effective for the treatment of necrotic soft tissue diseases. (High molecular compounds, Physical Chemistry).
The article is devoted to the study of the names of medicinal plants in the Uyghur language and the issue of lexico-semantic relations in them. The study of historical phytonomic-linguistic-semantic aspects and properties of the names of medicinal plants gives new information to the science of linguistics in the etymological, grammatical and lexical aspects. In the article, the author notes the scientific interest in the study of the names of
medicinal plants, while emphasizing the historicity of this process, as well as the particular importance of studying the names of medicinal plants in the current pandemic. The author
briefly outlines the essence of research carried out in this direction both at the world level
and in our republic, gives a description of the sources from which the names of medicinal
plants in the Uyghur language are taken. The article gives an interpretation of the names of
medicinal plants formed on the basis of one or more components and analyzes the lexical and
semantic features of such phrases.
Мамлакатимизда демократик ҳуқуқий давлат қуриш ва фуқаролик жамиятини шакллантириш мақсадида ижтимоий ҳаётнинг турли жабҳаларида, жумладан, олий таълим соҳасида ҳам туб ислоҳотлар амалга оширилмоқда. Маълумки, олий таълим соҳасида янги авлод дарсликлари туркуми яратилган бўлиб, улар талабаларнинг кенг кўламли билим олишларига хизмат қилмоқда. Олий юридик таълим соҳасида ҳам талабалар барча юридик фанлар бўйича янги авлод дарсликларидан фойдаланишмоқда. Бу жараён бардавом бўлиб, жамиятимизда, қонунчиликда, суд-ҳуқуқ соҳасида кечаётган чуқур ўзгаришлар ва янгиликлар асосида дасликлар янгиланиб, такомиллашиб бораверади.
The aim was to study the germination of microorganisms in mesenteric lymph nodes (MDR), liver, spleen, lungs, peripheral blood, peritoneal exudate to assess the intensity of BT. It was established that with extreme acute obstruction of the small and large intestine, the BT intensity or the germination rate of microorganisms from the extraintestinal organs of animals was more pronounced in MDR and liver than in the spleen and lungs. The intensity of BT was directly proportional to the duration of the experiment
Ҳозирда ахборот-коммуникатив жараён жадал суратларда тезлашиб, коммуникация воситалари такомиллашиб бормоқда. Ҳар бир алоқа воситасининг ахборот етказиб беришда ўз услуби ва имкониятлари мавжуд. Оммавий алоқа воситаси телевидение техника ёрдамида вербал ва визуал коммуникация унсурларидан фойдаланиб ахборотни кўп сонли аудиторияга узатади. Коммуникант (томошабин) ва коммуникатор (телевидение, яъни мазкур манба орқали маълумотларни узатиш истагида бўлган соҳа вакиллари) ўртасида коммуникатив алоқа ўрнатилади. Коммуникант ахборотни визуал ҳамда вербал коммуникация орқали қабул қилади. Г.Г.Почепцов коммуникацияга “вербал ахборотни новербалга ва аксинча новербални вербалга қайта кодлаштириш жараёни” [Почепцов, Г.Г.2001: с.14.] деб таъриф берган.
The head of state has brought up the question about personnel policy and their spiritual and political education of administrative shots since the first Days of Independence. This question has been lifted on the level of a state policy in Uzbekistan. The improvement and growth of political activity of administrative shots is connected with some objective and subjective influences in Uzbekistan. Democratization is difficult and complex process, and in this case it is required studying historical, political activity and to analyze specific regularities of young administrative shots.