Topicality and demand of the subject of dissertation. Various techniques of hybridization arc used in crop breeding, including cotton to produce a wide variability in agronomical valuable traits and develop new forms.
Regardless of its implementation hybridization process leads heredity decoding which allow the new plastic genotypes formation with an ability to change and adapt to the new conditions. Hybridization and selection arc considered as a main synthetic method of new varieties development and a success in this largely depends on the choice of crosses method and genotypes of initial forms. Therefore, there is given a special attention for studying the genetic basis and improving of hybridization methods. However, based on the most widely used of hybridization methods arc not always possible to develop varieties having high parameters of composite agronomical traits. Many developed varieties as a result of breeding methods arc genetically become homogeneous, which leads to a reduction of genetic variation and increasing of risk of cpiphytoty outbreaks and decreasing of total productivity (Boroycvich, 1981). Therefore, it is necessary to increase the genetic variability of crops’ agronomic traits by involving of original forms, as well as wild relatives of crops with genetic resistance to various stress factors, diseases and pests.
In increase cotton production through the creation of early maturing, high-yielding having good fiber yield and quality, resistant to various diseases, pests and stress factors, as well as with low level or toxic gossypol in cotton seeds still remain as critical problem in cotton production.
To overcome these problems there need to improving of genetic basis for assessment of existing donors and through the use of various hybridization methods to create new enriched genotypes, promoting positive recombination of polygene in hybrid’ organism for use in applied cotton breeding. Based on the above stated, the study of the genetic aspects of various methods of remote composite intraspecific and interspecific hybridization, based on the comparative evaluation of the effectiveness in order to isolate valuable recombinants and transgressive forms having new genetic variability of traits arc important both scientific and practical point of view.
The dissertation meets the objectives as set out in the Lows of Uzbekistan «On Seed Production» of December by 21, 2007 and «On Breeding achievements» by August 21, 2002 directed to developing and introduction of high-yielding cotton varieties, with a good yield and fiber quality, tolerance to various factors, as well as improving seed production.
Purpose of researches is comparative study of effectiveness of the various methods of intraspecific composite, convergent and inter-specific (3 to 5 species) hybridization revealing the nature of inheritance, form shaping and transgressive variation of traits, total and (+)-gossypol in creation of genetically enriched breeding material and for using in the applied cotton breeding.
Scientific novelty of the dissertation research is follows:
in the system of topcrosscs there used genetic evaluation for combining ability of main agronomic traits cotton varieties with different origins for further using in intraspecific composite and convergent hybridizations;
there established principally dominant inheritance and overdominance type of inheritance (with deviation toward the initial forms with the high agronomic traits) in F| at composite intra-and interspecific hybridization which genetically distinct accessions from the local and foreign selection and wide transgressive variability in F2-F3, facilitating to efficient selection of valuable recombinants;
first identified the inheritance nature and variability of total and (+)-gossypol in the cotton hybrids’ generative parts, developed by involving of American accessions with high (+)- gossypol and local varieties, as well as their correlation with some agronomical valuable traits;
first there held comparative study of economic traits at the different forms of amphidiploid G.thurheri x G.raimondii K-58 (hirsutum type) and K-59 (type harhadense) for free reproduction and after crossing the cultural forms of G.hirsutum L. species, it was established a wide range of variation of agronomic traits at mutant form of K-59 and composite hybrids, derived from it’s participation as compared to K-58 amphidiploid and it’s composite hybrids. It was found out those two types (type G.hirsutum K-58 and type G.harhadense K-59) of amphidiploid G.thurheri x G.raimondii at the free reproduction exhibits similarities with the both cultural tctraploid species; G.hirsutum L. and G.harhadense L., respectively. When they crossed with the cultivated G.hirsutum L. species these amphidiploid forms also behave as natural tctraploids;
it is revealed that, at the composite hybrids produced with the participation of the both forms of amphidiploid (K-58 and K-59) G.thurheri Tod. x G.raimondii Ulhr., as a result of transgressive variation, there is a disturbance of negative correlations between such traits as yield and fiber length, fineness and boll numbers conducive to positive recombinants emergence and increase donor opportunities of amphidiploids;
by comparative study of different methods of remote intra-and interspecific hybridization revealed the genetic nature of inheritance nature and variation degree of the main agronomic traits in composite hybrids, as well as their effectiveness in allocating recombinants having a new genetic variability of traits;
it is revealed that the possibility of breaking some negatively correlated traits by different methods of composite intra-and interspecific hybridization and selection of recombinants combining early maturity and high productivity, high fiber output with its quality and 1000 seed weight, etc.;
it is confirmed that the effectiveness of used methods such as a composite intraspecific and interspecific crosses, to increase positive transgressive variation and segregation genetically enriched recombinants having new combination of high levels of positive parameters of agronomic traits that were recommended and used to develop valuable initial material and new cotton varieties;
the obtained theoretical data on inheritance nature, hcritability and agronomic traits morphogenesis, levels of total and (+)-gossypol and their correlation with other agronomical valuable traits at developed hybrids could be successfully used in the field of fundamental research, and created unique hybrids, forms, progenies, lines and varieties could be used in applied cotton breeding.
Conclusion
1. There obtained and identified on comparative study base of intraspecific composed and converged hybrids with participation of six registered medium staple cotton cultivars in topcross system and high effects of GCA on the following traits:
«50%-cmcrgcncy-50 % flowering» Yulduz (-0.71); Tashkent-6 (-0.39) and in S-9070 (-0.38); “50% cmcrgcncy-50% maturing” S-9070 (-1.43), and in
Tashkent- 6 (-0.91); one boll weight S-6532 (+ 0.11); 1000 seeds weight S-9070 (+0.51); on productivity Tashkent-6 (+5,28), S-4911 (+4,04) and S-9070 (+2 24); fiber output S-6532 (+1,29); fiber length S-4911 (+0,70) and S-6532 (+0,48); fiber strength S-6532 (+1,57) and S-4911 (+0,91); micronairc S-6532 (+0,24) and Ak-Darya-6 (+0.24). These donors of high valuable traits were used by us for improving of the recurrent varieties by composite and convcrcgcnt hybridization. It was found that involvement of the varieties with a high GCA in convergent hybridization allows improving of the recurrent varieties and developing of a new initial material for cotton breeding:
inheritance nature and variability degree of agronomic traits at intraspecific composite and convergent cotton hybrids revealed the relative efficiency of the studied hybridization techniques during elaboration of new initial material with enriched genotypes of agronomic traits, and recommended to use in geneticselection process;
convergent hybrids F i dominated by early maturity, in terms of productivity and fiber output occurcd overall effect of overdominance, and F2-F3 appeared as positive transgressive forms;
significant effect of the genotype of the parental forms involved in hybridization on the inheritance nature of fiber quality (length, micronairc, strength) had convergent hybrids Fj, as well as their level of recombination in F2-F3 indicating the need for breeding of recombinants on these traits in early generations, taking into account genotype of initial forms;
the inheritance of the wilt tolcrancccs bccamcs not only depending on the pathogen load in soil fungus infections, but also depends on the used hybridization methods. Thus, most high resistance, i.c. negative superdominance on wilt tolerance observed in convergent hybrids F, and F2;
the direction and strength of correlation between the studied traits in intraspecific composite and convergent hybrids varied in depending on crosses type and from genotype of recurrent varieties. At present ease, the greatest number of recombinants with positive combination of high indicator traits which determining fiber quality, as well as its output, length, observed with with composite, particularly with convergent hybridization.
2. For the first time, on the basis of studies on determination the percentage of (+)- gossypol in seeds of genetically different cultivars of Uzbek cotton selection and analysis of variability, inheritance degree of total and (+)-gossypol in the environmentally and genetically remote hybrids and their correlations with economically valuable traits was proved:
the cultivars S-6524, S-6530 and S-6532 which were elaborated involving subspccic of G.ssp.punctatum had the highest level of (+)- gossypol and the «Turon» cultivar which was developed by composite hybridization has a low indicator of the current trait and relatively high level of total gossypol in seeds;
It was determined intermediate inheritance level of (+)- gossypol in the petals and seeds in F| hybrids and wide positive and negative transgressive variability in Ғ2-Ғ3. It was proved that the efficiency of plant selection with high (+)- gossypol in seeds since F2, that confirmed with segregation of constant progenies and lines on trait basis in F4 hybrids;
as a result of research the cross-correlation total and ( +)- gossypol and some agranomically valuable traits was found that between the ( +)- gossypol in the petals and seed exists a weak correlation. The data on correlations of studied traits showed an independent genetic control of (+)-gossypol in the generative organs and independent inheritance of them at cco- geographically and genetically remote hybridization.
3. For the first time, based on comparative study of agronomic traits of amphidiploid G.thurheri Tod. x G.raimondii Ulbr. two forms (hirsitum type -K-58 and harhadense type -K-59) and hybrids derived from G.hirsutum L. varieties revealed:
both studied forms of hirsutum type and harhadense type of amphidiploid G.thurheri Tod. x G.raimondii Ulbr., being functional diploids provided wide combinative variability in the progeny from the free reproduction and crossing with the cultivars of tetrapioid G.hirsutum L., and showed their similarity to G.hirsutum L. and G.harhadense L. tctraploid species, respectively;
as a result of the research a group of unique composite hybrids (F\G.thurherii Tod. x G.raimondii Ulbr.) x G.hirsutum L. confirmed unlimited transgressive variation as the basis of a new form revealing, new gene pool developing for use in applied cotton breeding. Herewith, at bud mutant K-59 observed emergence of phenotypes with higher variability for most agronomic traits compared to K-58;
it was found out that in composite hybrids which obtained by crossing of studied forms of G. thurberi Tod. x G. raimondii Ulbr. amphidiploids (2n=52) and with G.hirsutum L. cultivars were observed relatively rapid improvement on productivity and its components in comparison with freely propagated amphidiploids offspring. Herewith, composite hybrids involving K-58 on boll number in all generations was slower comparied to hybrids derived from K-59;
composite hybrids F, obtained involving two cultivars of cultivated forms on fiber output and length were observed deviation toward the parent with the best expression of the trait. It was revealed that the fiber output and length of the studied composite hybrids susceptible to less variability compared in terms productivity and its components. Relatively high variation was manifested on fiber output in F2, and on fiber length in F2-F3. In freely multiplying offspring of K-59 and its hybrids with varieties in F3 was observed the derivations of more long staple plants compared with hybrids, developed involving K- 58;
free propagating amphidiploids’ offsprings and composite hybrids selected by using of cultural forms showed the least wilt susceptibility compared with the control. Wilt resistance of barbadense type K-59 progenies from the free breeding was higher as compared than offspring of K-58, and higher in composite hybrids F2-F4, obtained involving K-59.
4. Under the general principle of correlation relationships among the studied hybrids were found that composite hybrids F2 amphidiploids’ G.thurberi Tod x G.raimondii Ulbr., both types (K-58 and K-59) with a G.hirsutum L. type Acala sj-5 cultivar showed mainly low positive and negative correlation coefficient values, which in most eases were none significant. In hybrid combination of K-58 x Andijan-60 fiber output and length correlated positively;
5. Based on comparative study of inheritance and variation of agronomic traits in developed 4 genomic [(G.thurberi Tod. X G.raimondii Ulbr.) X G.arhoreum L.] x G.hirsutum L., 5 - genome [(F|K-28 x S-6524 ) x G.harhadense L. hybrids and their backcross hybrids were proved:
the possibility of broad transgress variation and creation genetically enriched recombinants on unique traits;
efficiency of backcrosscs among the composite interspecific earlier generation hybrids for rapid improvement and stabilization of eultuvated forms of cotton;
wide transgress variability presence in 4 and 5 species composite hybrids and their backcross hybrids on productivity and its components starting with F|. In particular, it was confirmed the effectiveness of five species hybridization to increase the boll numbers per plant, boll weight and weight of 1000 seeds at 4 and 5 species and backcrosscs hybridization.
by obtaining recombinants having fiber output 43,1-45,0%, fiber length - 40 mm and above, micronairc of fiber 3.9-4.5 and wilt tolerance it was confirmed the effectiveness of introgressive and transgressive breeding at composite 4-5 species hybridization and their backcross hybrids.
6. As a result of studies of correlations in composite 4-5 species and backcrosscs hybridization of F2 hybrids it was revealed the effectiveness of used methods in interruption of such negatively correlated traits as «fiber output» and «fiber length» from medium positive (r=+0,39) up to high positive (r=+0,62), «fiber length» and «micronairc» -medium positive (r=+0,55), as well as «fiber length» and «fiber strength» -medium positive (r =+0,56 and r=+0.50).
7. Based on intraspecific composite and convergent, eco-geographically and genetically remote and 3-4-5 species and backcrosscs hybridizations were developed the following new breeding progenies, lines and varieties of upland cotton:
by composite and convergent hybridization way-L-7966, L-214/05; CC-896/05; CC-896/28; CC-991/05; CC-991/09; KC-1/05; КС-1/08; КС-1/18; KC-1/35; KC-1/51; KC-1/77, S-231-233/07, L-234-235/07, L-236-237/07, L-242-243/07, L-244-245/07, L-482-483/07, L-484-485/07, L-666-667/07, L-397-398/07, L-802-803/07, L-814-815/07, L-230/05;
cco- geographically and genetically distant hybridization - cultivar S-7300, S-7301, the progenies S-5344, S-5361. HPG-1;
composite 3 - specific hybridization -cultivar «Sulton», «Jarkurgan», S-7276, S-7277, as well as a number of lines;
8. Using the remote intra-and interspecific hybridization it was elaborated unique introgression hybrids, genetically enriched cotton recombinants, progenies, lines, and varieties «Sulton», «Jarkurgan», S-7276, S-7277, S-7300, S-7301 having positive combination of high agronomic traits. Cultivar «Sulton» was included in the State register from 2011 and for the period from 2008 up to 2014 it was sown on the area of over than 275,5 thousand hectares.
9. The following rcccomcndations were given for practize and future studies:
use of method convergent hybridization, allowing improving of agronomic valuable traits of recurrent parent and registered medium staple cotton cultivars and receiving a positive transgressive variability;
as an initial source in convergent crosses use cotton varieties with high General combination ability (GCA) on the following: on early maturity- Tashkent-6 and S-9070; boll weight - S-6532; weight of 1000 seeds S- 9070; on productivity -Tashkent-6, S-4911 and S-9070; fiber output -S-6532; fiber length - S-4911 and S-6532; fiber strength - S-6532 and S-4911; and for micronairc - S-6532 and Ak-Darya-6.
for use as an initial source in cotton genetics and breeding research such new cotton selection progenies as well as the lines: KS-1/05; K.S-1/08; K.S-1/18; KS-1/35; KS-1/51; and KS-1/77, L-7966, L-214/05, S-214/05, SS-896/05; SS-896/28; SS-991/05 and SS-991/09 with early maturity, productivity, wilt tolerance, fiber output and quality.
to use in cotton genetics and breeding researches both USA accessions BC3S,-47-8-l-17, BC3S|-l-3-6-15 with 95% of (+)-gossypol level in seeds and lines HPG-1 and others with 90% of (+)-gossypol level, as donors on this trait. Since 2012, developed and studied in the competitive variety testing of Institute the following lines: L-404-05 and L-6970 with high (+)- gossypol level were recommended for testing on ground control of the State Inspection Commission for Agriculture crops variety testing.
widespread use of various forms of synthetic tetrapioids G.thurheri Tod. x G.raimondii Ulbr., 4-5 species composite hybrids [(G. thurheri Tod. x G. raimondii Ulbr.) x G.arhoreum L.] x G.hirsutum L. and [(F t K- 28 x C-6524 ) x G.harhadense L., as well as their backcrosscs for achievement the broad transgress variation, elaboration genetically enriched recombinants on economically valuable traits and their use in practical cotton breeding;
to extend the areas in of early maturing commercialised cotton cultivar «Sulton» and perspective one «Jarkurgan» as well broad testing of such as new varieties S-7277, S-7300 and S-7301 in the republic.
Subject of the inquiry: rabbits, visceral-ischemic shock, metabolism, mitochondria, suktsinasol, suktsivil.
Aim of the inquiry: to study effect of new hemocorrectors such as suktsinasol and suktsivil on the basic pathogenetic mechanisms of visceral-ischemic shock.
Methods of inquiry: physiological, biochemical, biophysical, statistical.
The results achieved and their novelty: A complete evaluation of indices in hemodynamics is given in VIS including AAB and toxemia, functional changes in liver, indices of carbohydrate-phosphoric metabolism. A number of research methods have been studied which gave the opportunity to have a distinct understanding about metabolic status of the organism. Efficiency of a new polyfunctional hemocorrection - suktsinasol on hemodynamic and metabolic indices of VIS have been studied for the first time. The effect of a new polyfunctional hemocorrector Suktsivil on the hemodynamical and metabolic indices of VIS have been studied. A comparative analysis of effective blood substitutes during infusion for VIS in experiment has been carried out.
Practical value: We have determined hypothesis about disorder of energetic metabolism in liver cells in VIS. We have proved efficiency of using new complex blood substitutes sulktsinasol and suktsivil as supply of rich energetic compounds (sulktsinasol) and corrector of electronic and transport function of mitochondria in liver in emergency complicated by hypoxia and toxemia.
Degree of embed and economical efficiency: Obtained results concerning effective new substitutes suktsinasol and sukrsivil for VIS can be recommended for combined treatment of VIS in medicine new blood substitutes can restore hemodynamics, acid-alkaline balance, metabolism, reduce toxemia.
Sphere of usage: medicine.
The aim of the study is to improving the quality of treatment of ventral hernias in patients with morbid obesity by improving the tactical and technical aspects and optimizing the choice of hernioplasty method.
The object of the study were 121 patients with ventral hernias and morbid obesity who were hospitalized in the surgical department of the 1st clinic of the Samarkand State Medical University in the period from 2012 to 2021.
The scientific novelty of the study is as follows: a method was developed for preoperative preparation of patients with ventral hernia and morbid obesity using a modified pneumatic belt-bandage to adapt the cardiovascular and respiratory systems to intra-abdominal hypertension after hernioplasty; improved technical aspects of the reconstruction of the anterior abdominal wall in patients with morbid obesity; the surgical instrument "retractor" has been improved for technical optimization of the stage of suturing the anterior abdominal wall for fixing the prosthesis in patients with concomitant obesity and abdominal ptosis; clarified clinical and instrumental criteria for the specific unification of the scale for assessing the quality of life of patients after hernioplasty and abdominoplasty for ventral hernias and morbid obesity with differentiation of the value of physical, mental and social daily activity. The practical results of the study are as follows: According to the results of a scientific study to improve the diagnosis and surgical treatment of patients with ventral hernias and morbid obesity: improved "retractor". The use of the proposed tool made it possible to level the technical difficulties in fixing the prosthesis against the background of severe overweight with a reduction in the operation time; developed guidelines "Technical aspects of hernioplasty for ventral hernias in patients with morbid obesity" (certificate of the Ministry of Health 8n-r / 905 dated October 12, 2021), "Criteria for the choice of surgical treatment of patients with ventral hernias and obesity" (certificate of the Ministry of Health 8n-r /906 dated October 12, 2021). The proposed recommendations made it possible to optimize the choice of tactics for surgical treatment of patients with ventral hernias and morbid obesity; the obtained scientific results on improving the quality of diagnosis and surgical treatment of patients with ventral hernias and morbid obesity have been introduced into the practice of health care, in particular, in the departments of surgery of the 1st clinic of the Samarkand State Medical Institute, the Jizzakh Regional Multidisciplinary Medical Center and the Sh. Rashidov District Medical Association of the Jizzakh region (certificate of the Ministry of Health 8n-z / 368 dated October 22, 2021). The implementation of research results by improving the tactical and technical aspects of the surgical treatment of patients with ventral hernias and morbid obesity made it possible to reduce the overall incidence of postoperative complications from 14.8% to 8.9%, including wound complications from 11.1% to 4.5% and extra-abdominal from 7.4% to 4.5%, as well as significantly reduce the duration of surgical treatment and rehabilitation periods after various types of hernioplasty and abdominoplasty. The structure and scope of the dissertation. The dissertation consists of an introduction, five chapters, a conclusion, conclusions, practical recommendations and a list of cited literature. The volume of the text material is 107 pages.
Subjects of the inquiry: patients with acute intestinal obstruction.
The aim of the inquiry: improvement of treatment results of the patients with acute bowel obstruction by means of the perfection of the methods of intestinal decompression and enteral correction of metabolic disturbance of the organism with nutritive blend “Perative”.
Methods of inquiry: general clinical laboratory investigations, roentgenological studies, statistical technologies, clcctrocntcrography.
Novelty of inquiry: In complex treatment of the patients with acute bowel obstruction the improved intestinal tube has been used for intraoperative decompression of the gastrointestinal tract and it has been demonstrated of its effectiveness. The active intra- and postoperative decompression of the gastrointestinal tract, gut lavage, enteral [tube] feeding effectiveness in complex treatment of the patients with acute bowel obstruction has been proved. The necessity of addition of the complex treatment of the patients with acute bowel obstruction the enteral correction of metabolic disturbance of the organism has been proved and the balanced nutritive blend “Perative” efficacy has been defined.
Practical value: The application of the improved intestinal tube allowed accomplishing of the adequate evacuation of the toxic contents of the gastrointestinal tract and reducing of the enteric pressure. It has contributed to earlier recovery of the all gastrointestinal tract function and it has created the favourable conditions for enteral [tube] feeding. Carrying out of the enteral [tube] feeding with semi - substrate nutritive blend “Perative” has promoted to earlier replacement of the loss of power and plastic material needs. Clinical application of the developed patients management with acute bowel obstruction has promoted to the reduction of the complications rate (from 33,9% to 6,0%) and mortality (10,7% to 0%).
Degree of embed and economical effectivity: The main regulations of the dissertation have been applied in practical work of the urgent surgical department of the second clinic of the Second Tashkent State Medical Institute and it is used in process of 4-6 years students teaching in the Second Tashkent State Medical Institute.
Sphere of usage: urgent surgical help.
Objects of research: 1st group (control) - 8 dogs, which apply traditional intensive therapy at craniocereberal trauma without hypothermia. 2 st group - 8 dogs, which apply drug treatment with external craniocerebral hypothermia. 3 st group -8 dogs, which apply drug treatment with perfusion method of hypothermia. At 286 patients with heavy craniocerebral trauma, efficiency hyperventilation on a background of various methods CCH is investigated depending on type of infringement of a cerebral blood flow.
Purpose: to optimize results of protection and reanimation of a brain at a severe craniocereberal trauma by perfection of a method craniocerebral hypothermia and the differentiated choice of a mode of artificial ventilation easy.
Methods: the cerebral blood flow parameters estimated by transcranial Dop-plcrography datas. Also was definite saturation of arterial (SataO2) and venous (SaI. vjO2) blood oxygen, cerebral blood flow (arteriovenous difference O2), a level of lactate in peripheral blood and in liquor, parameters of intensity.
Results and novelty: by complex study was proved that perfusion method of the craniocerebral hypothermia is an effective and adequate method of protection of a brain caused by hypoxia and secondary damages at severe craniocerebral trauma. It is established, that at carrying out perfusion CCH the important factor of protection of a brain from hypoxia and secondary damages to which the death of animals at severe craniocerebral trauma, is preservation on a limit of physiological norm of functioning erythrocytes owing to adaptable decrease in processes the lipid peroxidation, preservation at high enough level of activity of enzymes antioxidant system, reactions peroxide hemolysis erythrocytes and which can serve as criteria of an estimation of the forecast of efficiency of spent treatment, an outcome of disease.
Practical value: it is developed and pathogenetic efficiency of a perfusion method of the CCH is proved at severe craniocerebral trauma. The algorithm of differential use hyperventilation at patients with severe craniocerebral trauma is developed depending on type of cerebral blood supply disturbance and a degree of development intracranial hypertension.
Inclusion of a method perfusion method of the CCH increase efficiency of protection of a brain from hypoxia and secondary damages reduces frequency of lethal outcomes at severe craniocerebral trauma.
Introduction and economic efficiency: results of research are introduced in practice of the Republican science centre of neurosurgery Health Ministry of the Republic of Uzbekistan and department of anesthesiology and resuscitation of 2-clinic of the Tashkent medical academy.
Field of application: resuscitation and neurosurgery.
Objects of research: 447 patients, from them 68 with chronic purulent middle otitis and 379 with dry meso- and cpitympanitis.
Purpose of research: to estimate efficiency and forecasting of results of various variants of tympanoplasty.
Methods of research: common clinical investigation, voice-frequency threshold and over threshold audiometry, research of hearing in low and expanded range of frequencies, speech audiometry, ultrasound research of hearing, rontgenography of mastoid, computer tomography, otomicroscopy.
Received results and their novelty: at chronic purulent middle otitis it is proved carrying out two stage tympanoplasty - as the first stage reconstructive-sanity operations - atticoantrotomy on to the “closed” type with mastoidoplasty, and as the second stage hear improving operations. The way of laying of a transplant is developed and introduced as the “romashki”, raising efficiency of engraftment and functional results. Efficiency is revealed at carrying out myringoplasty and tympanoplasty on a “dry” car. Developed forecasting criteria, based on the objective data for planned operations.
Practical value: developed the ways of reconstructive-plastic and hear improving operations, estimation of their efficiency and forecasting expected result at patients with chronic inflammatory diseases of middle car.
Degree of embed and economic effectivity: results and conclusions of research arc introduced into practice in ENT-dcpartmcnts and polyclinics, in educational process of Tashkent medical academy.
Field of application: otorhinolaryngology.
Subject of the inquiry: 97 patients with ankylosing spondylitis, 20 healthy volunteers.
Aim of the inquiry: to assess metabolic activity of erythrocytes and peculiarities of fcrrokinctics in using Fhlogcnzymc in the complex therapy of patients with AS. Methods of research: functional-metabolic process erythrocytes and ferrokinctics (scrum iron, ferritin, saturation of transferrin with iron) lipid peroxidation and antioxidant system.
The results achieved and their novelty: For the first time purposeful complex study was conducted of metabolic process parameters in erythrocytes and fcrrokinctics, lipid peroxidation and antioxidant system processes, Willebrand factor, atherogenicity in relation to the clinical course of the disease. Functional-metabolic disorders in erythrocytes in fcrrokinctics determined systemic changes in blood, with their extent associating with severity of the clinical course of AS. For the first time it was found that the use of Fhlogcnzymc in the complex treatment improved clinical course of the disease. The shortening of clinical recovery period was associated with normalization of parameters characterizing functional metabolic activity in crythrocytea and ferrokinctics. Systemic enzyme therapy was proved to increase the effect of conventional therapy by a directed improvement of functional metabolic processes in erythrocytes, energetic activity and ferrokinctics which allowed inclusion of systemic enzyme therapy preparations for hemic hypoxia in patients with AS.
Practical value: Use of Fhlogcnzymc in the complex treatment of AS increased the efficacy of therapy, decreased the rate of drug side-effects, allowed us to decrease the doses of basic preparations and non-stcroid anti-inflammatory. Changes of laboratory parameters in Fhlogcnzymc using included more significant decrease of acute phase indices, increase of hemoglobin and erythrocyte concentration in the peripheral blood.
Degree of inculcate and economic efficiency: conclusions and practical recommendations were introduced into the practice of departments of rheumatology, nephrology of the third clinic of the Tashkent Medical Academy and into teaching process of departments of faculty and hospital therapy, folk medicine, internal diseases of the stomatological faculty and clinical pharmacology of the Tashkent Medical Academy.
Sphere of usage: rheumatology, therapy.
The article discusses the issues of assessing the effectiveness of technologies used in the cultivation of sweet cherries in greenhouses, as well as the issues of export and cultivation of
sweet cherries in Uzbekistan. The effectiveness of the introduction of innovative technologies in the cultivation of sweet cherry was calculated using performance indicators. The article gives recommendations and suggestions for the protection of intensive cherry orchards grown in the information and consulting center of the Tashkent State Agrarian University.
The objective of this study was to assess the efficacy of a complex therapeutic approach, which included retrobulbar catheterisation and magnetic stimulation of the optic nerve, in patients with ChASN of diverse aetiologies. This was achieved by analysing the clinical and functional characteristics of the eye in these patients.
The methodology employed in this study is outlined below. A total of 105 patients (155 eyes) with a diagnosis of partial optic nerve atrophy of different genesis (PAN) were included in the study. These patients received conventional treatment, treatment by the method of retrobulbar catheterisation, as well as the method of retrobulbar catheterisation combined with MS for 10 days. The dynamics of OD, visual field parameters, electrophysiological studies, ophthalmoscopy and ultrasound Dopplerography were investigated.
The results demonstrated that the combined method of treatment was more effective than the conventional method alone. The analysis of the obtained data indicates that the effectiveness of the proposed methods of treatment depends on the degree of MN destruction. Therefore, the treatment is more effective in the second degree of ChASN. However, in the group of patients treated by the combined method, the efficiency is equally high in both the second and third degrees of ChASN.
The data on the dynamics of visual acuity of patients with II stage of ChASN during treatment indicates that if in the group of patients treated by the traditional method the effect was observed in only 64.3% of cases, in the group of patients treated by the method of retrobulbar catheterisation the efficiency was observed in 89.3%.
The efficacy of the combined method of retrobulbar catheterisation in combination with MS in treating patients with ChASN was also demonstrated by the observed improvement in OZ in comparison with the control group. In this group, the effectiveness of the treatment was 90.9%.
The visual field boundaries in patients with the II degree of ChASN of the II and III main groups expanded in comparison with the control group by more than 51-60° in the periphery. The number of absolute central and paracentral scotomas decreased in comparison with the control group by 4.7 and 5 conventional units.
In the group of patients with ChASN stage III, the borders of the visual field in groups II and III, in comparison with the control group, exhibited a peripheral widening of 69° and 70°. The number of scotomas decreased by 6 and 11.6 conventional units in comparison with group I.
The ocular fundus condition under the proposed methods of treatment underwent the following changes due to the short period of observation (2-3 weeks): dilation of CAC vessels, reduction of capillary tortuosity, reduction of retinal oedema, as well as appearance of foveal and macular reflexes distinctness.
The data from ultrasound Dopplerography demonstrated a significant improvement in haemodynamic parameters in the central artery of the retina (CAC) in patients with central artery syndrome of different aetiology in the early stages following treatment. An improvement in systolic pressure indices was observed. In each case of the examined patients, an improvement in haemodynamic resistance index (Ri) towards normalisation was revealed. Consequently, there was a significant increase in diastolic pressure.
This paper examines the impact of teleworking on employees’ labour productivity and the entity`s management in the condition of global pandemic Covid-19 in Uzbekistan. The epidemiological and dynamic nature of the Covid-19 crisis in which organizations have to adopt a work-from-home policy made this investigation very necessary. When the issue is explained more broadly, this empirical research investigates two significant aspects about teleworking process in organizations in the period of lockdown in Uzbekistan. First, teleworking positively affects employee’ labour productivity and the effectiveness of the entity, and the second teleworking complicates the management activities and affects negatively the socio-emotional environment in the work team. The objectives of the study are to identify whether the process of telework affects positively or negatively the organization’s current labour processes and propose multiple recommendations regarding to improve the telework mechanism for enabling prospective labour concerns in the human resources field of Uzbekistan. To achieve the objectives, a survey research design was adopted. The techniques employed in analyzing the data were quantitative methodology, descriptive statistics and Pearson's correlation coefficient. The results indicated that working from the home policy has a strong and positive relationship with employee’ labour productivity and the effectiveness of the entity if it is measured as a result-oriented rather than activity. It was also found that teleworking has a significant relationship with complicatedness of the management and it brings to the negative socio-emotional environment in the work team. Based on the findings, the researcher concluded that unexpected telecommuting in the period of Covid-19 has both negative and positive impact on employee performance and the entity`s management control.
Purpose of the study: to evaluate the results of complex therapy including retrobulbar catheterization and magnetic stimulation of the optic nerve in patients with ChASN of different genesis by studying clinical and functional features of the eye in this case.
Methods. 105 patients (155 eyes) with the diagnosis: partial optic nerve atrophy of different genesis (PAN) received conventional treatment, treatment with the method of retrobulbar catheterization, as well as with the method of retrobulbar catheterization in combination with MS for 10 days. The dynamics of OD indicators, visual field, electrophysiological studies, ophthalmoscopy and ultrasound Dopplerography were investigated.
Results. The analysis of the obtained data indicates that the effectiveness of the proposed methods of treatment depends on the degree of MN destruction, so the treatment is more effective in the 11th degree of ChASN. However, in the group of patients treated by the combined method the efficiency is equally high both at II and III degrees of ChASN.
According to the data of visual acuity dynamics in patients with II stage of Chasnosis in the course of treatment it follows that if in the group of patients treated by the traditional method the effect was observed only in 64,3% of cases, in the group of patients treated by the method of retrobulbar catheterization the efficiency was observed in 89,3%.
The dynamics of the ocular fundus state under the proposed methods of treatment due to the short period of observation (2-3 weeks) underwent the following changes: dilation of CAC vessels, reduction of capillary tortuosity, reduction of retinal edema, as well as the appearance of foveal and macular reflexes distinctness. The data of ultrasound Dopplerography indicate a significant improvement of hemodynamic parameters in the CAC in patients with ChASN of different genesis in early terms after treatment. Improvement of systolic pressure indices was noted. In each case of the examined patients the improvement of hemodynamic resistance index Ri towards normalization was revealed. Accordingly, there was a significant increase in diastolic pressure, indicating the strengthening of elastic-elastic properties of vessels under the influence of treatment.
In our opinion, the improvement of hemodynamic parameters after the course of the proposed method of treatment is associated with an increase in the volume of the microcirculatory channel in the area of direct influence on MN by retrobulbar catheterization and MS.
This article provides data on the main fungal diseases of dog rose in the conditions of the Tashkent Botanical Garden. The main diseases and their causative agents and signs of such diseases as rust, powdery mildew, gray rot and various spots have been studied.
The results of the study were used to develop measures to combat rosehip fungal diseases. To suppress the spread of rosehip spots, Previkur SL 722 c.c. preparations were used. at two consumption rates and Falcon 46% e. The biological effectiveness of the drugs used was studied. Thus, the maximum value was noted in the variant with Previkur SL 722 v.r.k. at a consumption rate of 1.5 kg / ha, which was 90.9% on day 15, and by 30 - 86.5%. For the fungicide Falcon 46% ae. (0.5 l / ha), biological efficiency was 78.2% on day 15 and 66.8% on day 30. Against powdery mildew, we used fungicides Ridomil Gold 68% w.g. at a consumption rate of 2.5 kg / ha and powder of ground sulfur (20 kg / ha). fungicide Ridomil Gold 68% w.dg, showed biological effectiveness on leaves on day 15 - 74.8%, on stems - 71.3%, however, these indicators on day 30 were 75.2% and 72.2%, respectively , on the 45th day the indicators decreased. In the case of sulfur, 20 kg / ha, the indicators were on the 15th day, on the leaves - 71.5%, on the stems 70.6%, on the 30th day - on the leaves 71.3% and on the stems 70.6%..
Subjects of the inquiry: 103 patients with rheumatoid arthritis, 20 healthy individuals.
Aim of the inquiry: To study therapeutic effect of low frequency physical factors on the cytokines and the processes of lipid peroxidation and to confirm scientifically the efficacy of their use based on the their effect on the clinical laboratory findings.
Methods of investigation: Clinical and laboratory investigations, immunological analyses of the blood scrum cytokine levels and synovial fluid, biochemical examinations of the lipid peroxidation and antioxidant system indicators, phospholipase-A2 activity, nonspecific phosphatases and free oxyprolinc in the blood serum of patients.
The results achieved and their novelty: There was studied clinical efficacy of ultraphonophoresis with benzketozon during treatment and rehabilitation of the patients with rheumatoid arthritis. It was proved that disbalance between inflammatory and anti-inflammatory cytokines as well as lipid peroxidation activation activity in the erythrocyte membranes and blood scrum destabilized cellular membrane structures, increase in phospholipase-A2 activity and, consequently, stimulating prostaglandines, inflammation mediators, synthesis. There was shown that complex therapy with inclusion of low frequency physical factors, particularly ultraphonophoresis with benzketozon, gave marked positive effect normalizing interrelation ship between inflammatory and anti-inflammatory cytokines reducing activity of phospholipase-A2, lipid peroxidation products and rising the levels of antioxidant system indicators.
Practical value: There has been shown rationality of inclusion of the physical-pharmacological method ultraphonophoresis with benzketozon into clinical practice. The differential indicators developed for application of low-frequency physical methods of therapy for rehabilitation of the patients with rheumatoid arthritis allow prolongation of the remission, improvement of the patients life quality.
Degree of embed and economic effectivity: The practical recommendation and guidelines have been applied in the clinical practice of the out-patient special course of arthrological treatment in the Republican Rhcumatological Center, Clinical Hospital N 1, Central Hospital of Zangiota district of Tashkent province. Sphere of usage: Rheumatology, physiotherapy.
Subjects of research: 815 patients with the various forms acute pancreatitis, 235 patients with primary erronous diagnosis of acute pancreatitis.
The purpose of research: improve the treatment results of the patients with acute pancreatitis by upgrading existing and developing new diagnostic methods in the treatment complex.
Methods of research: clinical, biochemical investigation.
The results achieved and their novelty. On the basis of the analysis of occurance frequency of various clinical symptoms, diagnostics system of the acute pancreatitis is offered, the criteria of the laboratory and ultrasonic diagnostics for given disease arc advanced, for a quantitative estimation of severity of a condition of the patients the ball scale is offered; the complex conservative therapy is advanced, the technique of realization of long intraarterial catheter therapy is optimized, the optimum indications to realization of retrograd and pcrcutanc endobiliar interventions in treatment of acute biliar pancreatitis arc determined, drainage and sanation of omental bag for open operative interventons is offered, the technique of treatment of the patients in postoperative period is advanced and the algorithm of medical measures is offered at acute pancreatitis.
The developed diagnostic and treatment complex has allowed to reduce frequency of diagnostic errors from 28,4% to 16,8%, to increase efficiency of conservative therapy from 89,8% up to 95,3%, long intraarterial catheter therapy -from 72,0% up to 82,8%, to reduce mortality from 7,4% to 3,4%.
The practical importance. The offered clinical system for diagnostics and the advanced criteria of laboratory diagnostics promote to increase reliability of diagnostics, the systematized ultrasonic criteria allows verify the form of acute pancreatitis. The offered scale of definition of severity of the acute pancreatitis allows quantitatively characterize a condition of the patients, dynamical changes of pathological process and efficiency of used of a complex of medical measures. The advanced complex conservative therapy, technique of realization long intraarterial catheter therapy, definition of the indications to performance retrograd and pcrcutanc endobiliar interventions, advanced draining method and sanation of omentum bag at pancrcanccrosis, combined treatment in postoperative period allow to improve results of treatment of the given category of the patients.
Degree of introduction and economic efficiency: the received results arc introduced into practical activity of surgical branches of second clinics TMA.
Area of application: emergency and abdominal surgery.
Objects of research: technologies of computer teaching, automated training-teaching systems, technological objects of complicated technological processes and productivity controlling.
Purpose of the work: principle, methods and ways of cognitive automated training teaching systems construction development with extended test control, analysis and information classification functions for training operating controlling staff of manufacturing enterprises with continuous technological processes, which help increase the efficiency of adaptation to students’ individual features and education standard requirements.
Methods of research: device of mathematic modeling processes and devices of chemical technological type, modern theory of automated controlling, principles and methods of cognitive engineering and statistic data processing.
The results obtained and their novelty: scientific novelty of the thesis results is that theoretical generalization and solution of important economic task development of scientific methodical training platform realizing typical ATLS with extended functions of test control on the subject “Automatization of manufacturing process”, and operators training technological processes and production is carried out.
Practical value: is that solution of considered task in the thesis allows develop and fulfill practical integration of ATLS meeting standard requirements for the wide types of processes in chemical, oil-processing, petrochemical spheres, mineral fertilizer production, construction materials industry and others.
Degree of embed and economic effectivity: results of the research arc used in: “Khimavtomatika”, Tashkent state technical university.
Field of application: Educational process in technical institutions and in industrial manufacture specialists training and qualification system.