A methodical approach for evaluating the variability of productivity and fruit quality in the genetic collections of strawberry (Fragaria × ananassa Duch.)

For strawberry  (Fragaria × ananassa Duch., 2n = 8x = 56), which is the leading  berry crop in the world, research  into the genotype × environment interaction is important. A complicated genomic composition, the  diversity of genetic control systems, and a strong modifying effect of growing conditions on the implementation of quantitative traits make it necessary to improve  methods for analysis of the  genotypic variability of economically  valuable  traits with the  aim of identifying genotypes that  are characterized by stability and adaptive qualities in a wide ecological  range  of growing  conditions. In 2016–2018, twenty-seven strawberry  varieties were studied in the collections of North Caucasian Federal Scientific Center of Horticulture, Viticulture and Krymsk Experiment Breeding Station, VIR Branch. Field experiments and data counts  were set and carried out according to a single scheme. The following characteristics were studied: the number of inflorescences (units per plant), the number of berries (units per plant), the average  weight  of berry and berry of the first order (g), total and marketable yield (g per plant), firmness of fruit (g), sugar content in berries on Degrees  Brix (°Bx), sugar-acid  index. The purpose of this work was the development of a methodical approach to assessing the contribution of the genotype– environment interaction to the variability of the traits of productivity and fruit quality and the determination of strawberry varieties with a stable  genotype. To this end, the mathematical models  of two- and three-factor analysis of variance and cluster  analysis using Ward’s method were employed. According to the  results  of this work, strawberry  varieties grown in different  climatic conditions show  differences  in the  structure of the  variability of the  traits of productivity and  fruit quality. For the conditions of the city of Krymsk, the influence  of the genotype of the variety was predominant, and for the  conditions of the  city of Krasnodar, in addition  to the  influence  of the  genotype of the  variety, the  environmental component in the form of the genotype–environment interaction is also significant. A statistically significant influence of the growing  zone has been  established for the traits of productivity and fruit quality, with the exception of the average weight of fruit. At the same time, differences in the mean values of the traits of varieties can be both significant and partially or completely absent. To identify varieties with promise for cultivation in the areas studied, it is recommended to use cluster analysis on the informative complex of traits with the calculation  of the Euclidean distances for varieties that were grown under  different  conditions. The magnitude of the Euclidean distance  will be the measure of the influence  of a particular environment on the  genotype of plants. The smaller the  value of the  Euclidean distance  in a variety, according to the complex of the traits studied, the more stable this variety is

Effect of <i>Meloidogyne incognita</i> infection on the accumulation of phenolic compounds in plants of the genus Mint (Mentha L.)

The purpose of the research is to compare the accumulation of phenolic compounds of different species and varieties of mint, zoned in Central Russia against the background of plant infection by Meloidogyne incognita.Materials and methods. Plants were grown from cuttings in a growing experiment in open ground. Mentha × piperita L. (varieties: Tik-Tak, Orange, Minneola, Mojito, Mitchum, Chocolate), M. spicata L. (varieties Morocco, Crispa) and M. longifolia L. (Longifolia) were taken for the study. A month later, the rooted plants were infected at the rate of 1000 sp. infective larvae of M. incognita per plant. After 8 weeks leaves were fixed in ethanol. The total content of phenolic compounds (PC), phenylpropanoids, flavonoids and catechins was studied using a spectrophotometer. The determination of the total content of PС was carried out using the Folin-Cecolte reagent with measurement at 725 nm, phenylpropanoids – by direct measurement of optical density at 330 nm, flavonoids – by reaction with aluminum chloride at 415 nm, the total content of flavans (catechins - flavan-3-ols), their oligomeric forms – proanthocyanidins, as well as leukoanthocyanidins were assessed by reaction with vanillin at 500 nm.Results and discussion. It has been shown that the accumulation of phenols is related to the species of plants. The varieties Mentha × piperita L. in most cases contained more phenols than M. spicata L. and M. longifolia L. A significant number of PC was noted in the violet-colored varieties Mitchum, Chocolate and Orange. The total content of PC almost completely correlates with the content of their precursors – phenylpropanoids. In terms of the content of flavonoids, the Mitchum variety stands out noticeably, and in terms of the content of catechins, the Orange variety stands out. Nematode infection in most varieties causes a noticeable increase in the total accumulation of soluble PC, phenylpropanoids and flavans, but leads to a decrease in the content of flavonoids

Metodologia para melhorar a qualidade na organização do processo educacional através da implementação de software

The article deals with the issues of information exchange between teachers, pupils and educational organization departments. They analyzed the advantages and the disadvantages of traditional approaches: e-mail, communication via phones, social networks. They considered the issues of information placement intended for a large number of users. They revealed the need to address the problems associated with the publication of events - major administrative announcements of educational organizations, which are visible to all users and set to a certain date. The approach to publication of events is proposed within the framework of a system separate module. They considered the mechanism of mass mailings which allows users to transmit information to two or more recipients and ensures the exchange of information available only to recipients, unlike the "wall". An approach is proposed to increase the quality of the educational process organization, which allows a rapid exchange. The issues of information placement are considered on the website of the educational organization using the example of the training schedule. The advantages and the disadvantages of the traditional approach are analyzed. The issues of schedule planning among part-timer teachers are considered. They propose the approach to increase the quality the educational process quality organization, which allows you to place and make changes to the curriculum quickly using the example of the "Electronic Schedule" system.El artículo trata sobre los temas de intercambio de información entre profesores, alumnos y departamentos de organizaciones educativas. Analizaron las ventajas y desventajas de los enfoques tradicionales: correo electrónico, comunicación a través de teléfonos, redes sociales. Consideraron los problemas de la colocación de información destinados a un gran número de usuarios. Revelaron la necesidad de abordar los problemas asociados con la publicación de eventos: los principales anuncios administrativos de las organizaciones educativas, que son visibles para todos los usuarios y se establecen en una fecha determinada. El enfoque para la publicación de eventos se propone en el marco de un módulo separado del sistema. Consideraron el mecanismo de correo masivo que permite a los usuarios transmitir información a dos o más destinatarios y garantiza el intercambio de información disponible solo para los destinatarios, a diferencia del "muro". Se propone un enfoque para aumentar la calidad de la organización del proceso educativo, lo que permite un intercambio rápido. Los problemas de colocación de información se consideran en el sitio web de la organización educativa utilizando el ejemplo del programa de capacitación. Se analizan las ventajas y desventajas del enfoque tradicional. Se consideran los problemas de planificación de horarios entre los maestros a tiempo parcial. Proponen el enfoque para aumentar la calidad de la organización de la calidad del proceso educativo, lo que le permite ubicar y realizar cambios en el plan de estudios rápidamente utilizando el ejemplo del sistema "Programación electrónica".O artigo trata das questões de troca de informações entre professores, alunos e departamentos de organização educacional. Eles analisaram as vantagens e desvantagens das abordagens tradicionais: e-mail, comunicação via telefones, redes sociais. Eles consideraram os problemas de colocação de informações destinados a um grande número de usuários. Eles revelaram a necessidade de abordar os problemas associados à publicação de eventos - grandes anúncios administrativos de organizações educacionais, que são visíveis para todos os usuários e definidos para uma determinada data. A abordagem para publicação de eventos é proposta no âmbito de um módulo separado do sistema. Eles consideraram o mecanismo de envios em massa que permite aos usuários transmitir informações a dois ou mais destinatários e garante a troca de informações disponíveis apenas para os destinatários, ao contrário do "muro". Uma abordagem é proposta para aumentar a qualidade da organização do processo educacional, o que permite uma troca rápida. As questões de colocação de informações são consideradas no site da organização educacional usando o exemplo do cronograma de treinamento. As vantagens e desvantagens da abordagem tradicional são analisadas. As questões do planejamento do cronograma entre os professores temporários são consideradas. Eles propõem a abordagem para aumentar a qualidade da organização da qualidade do processo educacional, que permite colocar e fazer mudanças no currículo rapidamente usando o exemplo do sistema "Programação Eletrônica"

Алмазная лезвийная обработка оптических структурированных поверхностей на примере круговой линзы Френеля

Components of optical systems for various purposes include optical elements with structured surfaces, i.e. linear and circular Fresnel lenses. The objective of the conducted studies is to analyse design parameters and technological development of modes and conditions to ensure manufacturing circular Fresnel lenses with specified technology requirements.The subject of the study is a circular Fresnel lens, which has a thickness of 2 mm and a diameter of 76.7 mm; its processed profile consists of 126 concentric rings with a valley pitch equal to 0.3 mm. The profile depth of the rings varies from 2.1μm to 337.4μm, with the profile angle varying from 0.406 ° to 48.361 °. The lens material is polymethyl methacrylate (PMMA) - a tough amorphous polymer, which has high transparency, weather resistance, good physical-mechanical and electrical insulating properties.The article presents the results of applied research related to diamond machining of a Fresnel circular lens. Substantiates that there is a need to use an ultra-precise machine for lens processing and gives its main technical characteristics.The design features and recommended domestic and foreign diamond mono-crystalline cutters for preliminary and finishing processing of structured surfaces, including Fresnel lenses are analysed.The technology of diamond edge cutting machining of lenses is proposed, the modes and conditions of diamond turning to exclude finning are given.The results of metrological control have confirmed the requirements for the profile accuracy and the roughness of surfaces machined. The JSC "VNIIINSTRUMENT" has implemented the developed technology on the ultra-precise specialised NC machine and recommended its use in machining the structured plexiglass surfaces of various sizes for different purposes.К элементам оптических систем различного назначения относятся оптические элементы со структурированными поверхностями – линейные и круговые линзы Френеля. Целью проведенных исследований является анализ конструктивных параметров и технологическая отработка режимов и условий, обеспечивающих изготовление круговых линз Френеля с заданными техническими требованиями.Предметом исследования является круговая линза Френеля толщиной 2 мм и диаметром 76,7 мм с обработанным профилем, состоящим из 126 концентрических колец с шагом по впадинам, равным 0,3 мм. Глубина профиля колец варьируется от 2,1 мкм до 337,4 мкм, при этом угол наклона профиля изменяется в пределах от 0,406° до 48,361о. Материалом линзы является полиметилметакрилат (ПММА) -жесткий аморфный полимер, обладающий высокой прозрачностью, атмосферостойкостью, хорошими физико-механическими и электроизоляционными свойствами.В статье приведены результаты технологических исследований по алмазной лезвийной обработке круговой линзы Френеля. Обоснована необходимость использования сверхточного станка для обработки линзы и приведены его основные технические характеристики.Проанализированы конструктивные особенности и рекомендованы алмазные монокристаллические резцы отечественного производства и зарубежной фирмы для предварительной и финишной обработки структурированных поверхностей, в том числе линзы Френеля.Предложена технология лезвийной алмазной обработки линз, приведены режимы и условия алмазного точения, исключающие образование заусенцев.Результаты метрологического контроля подтвердили предъявляемые требования по точности профиля и шероховатости обработанных поверхностей. Разработанная технология была реализована в ОАО ”ВНИИИНСТРУМЕНТ” на сверхточном станке со специализированным числовым программным управлением и рекомендована для использования при обработке структурированных поверхностей из оргстекла различных типоразмеров и назначения

МЕТАБОЛИЧЕСКИЕ ЭФФЕКТЫ СУБСТРАТНОГО АНТИГИПОКСАНТА НА ОСНОВЕ ЯНТАРНОЙ КИСЛОТЫ

The paper discusses promises for clinical use of substrate antihypoxants.Objective: to investigate the efficacy of succinate containing  substrate  antihypoxants  on  systemic  oxygen  consumption,  blood  buffer  capacity,  and  changes  in  the  mixed venous blood level of lactate when they are used in gravely sick patients and victims with marked metabolic posthypoxic disorders.Subjects and methods. The trial enrolled 30 patients and victims who had sustained an episode of severe hypoxia of mixed genesis, the severity of which was evaluated by the APACHE II scale and amounted to 23 to 30 scores with a 46 to 70.3% risk of death. The standard infusion program in this group involved the succinate-containing drug 1.5% reamberin solution  in  a  total  dose  of  800  ml.  A  comparison  group  included  15  patients  who  had  undergone  emergency  extensive surgery for abdominal diseases. 400 ml of 10% glucose solution was used as an infusion medium. Oxygen consumption (VO2ml/min) and carbon dioxide production (VCO2ml/min) were measured before infusion and monitored for 2 hours. Arterial blood gases and acid-base balance (ABB) parameters and mixed venous blood lactate levels were examined. Measurements were made before and 30 minutes after the infusion of reamberin or glucose solution.Results. Infusion of 1.5% reamberin solution was followed by a significant increase in minute oxygen consumption from 281.5±21.2 to 310.4±24.4 ml/min. CO2 production declined (on average, from 223.3±6.5 to 206.5±7.59 ml/min). During infusion of 10% glucose solution, all the patients of the comparison group showed a rise in oxygen consumption from 303.6±33.86 to 443.13±32.1 ml/min, i.e. about 1.5-fold. VCO2 changed similarly. The intravenous infusion of 800 ml of 1.5% reamberin solution raised arterial blood buffer capacity, which was reflected by changes in pH, BE, and HCO3. There was a clear trend for lactate values to drop in the mixed venous blood. The intravenous injection of 400 ml of 10% glucose solution caused no significant changes in major ABB indicators, which reinforced the statement that there is a difference in the metabolism of these substrates.Conclusion. The succinate-containing drugs are able to compensate for metabolic acidosis. Their use is followed by increased oxygen consumption  and  activated  aerobic  oxidation  processes.  The  basis  of  their  antihypoxant  properties  was  thought  to  be recovered intracellular aerobic metabolic processes due to corrected intracellular metabolic acidosis and increased blood  buffer capacity.В статье обсуждаются перспективы клинического применения субстратных антигипоксантов.Цель — изучить влияние сукцинат-содержащих субстратных антигипоксантов на системное потребление кислорода, буферную емкость крови, динамику содержания в смешанной венозной крови лактата при их применении у тяжелобольных и пострадавших с выраженными метаболическими постгипоксическими нарушениями.Материалы и методы. В исследование включили 30 больных и пострадавших, перенесших эпизод тяжелой гипоксии смешанного генеза, тяжесть состояния которых оценивали по шкале APACHE II, она составила от 23 до 30 баллов с риском летального исхода от 46 до 70,3%. В состав стандартной инфузионной программы этой группы был включен сукцинат-содержащий препарат — реамберин 1,5% в суммарной дозе 800 мл. Группа сравнения (n=15) была представлена больными, которым в экстренном порядке выполняли обширные операции по поводу заболеваний органов брюшной полости. В качестве инфузионной среды был использован 10% раствор глюкозы в количестве 400 мл. До начала инфузии, а затем в мониторном режиме на протяжении двух часов измеряли потребление O2(VO2мл/мин) и выделение CO2(VCO2мл/мин). Изучался газовый состав, параметры КОС артериальной крови, содержание лактата в смешанной венозной крови. Измерения проводили до начала инфузии раствора реамберина или глюкозы, а также через 30 минут после ее завершения.Результаты. Инфузия  1,5%  раствора  реамберина  сопровождалась  достоверным  увеличением минутного  потребления  кислорода  с 281,5±21,2 мл/мин до 310,4±24,4 мл/мин. Выделение CO2 при этом снизилось (в среднем с 223,3±6,5 до 206,5±7,59 мл/мин). У всех больных группы сравнения во время инфузии 10% раствора глюкозы наблюдали увеличение потребления кислорода с 303,6±33,86 до 443,13±32,1 мл/мин, то есть почти в 1,5 раза. Аналогичным образом изменилосьVCO2. Внутривенная инфузия 800 мл 1,5% раствора реамберина повышала буферную емкость артериальной крови, что проявлялось изменением PH, BE и HCO3. Отмечали явную тенденцию к снижению содержания лактата в смешанной венозной крови. При внутривенном введении 400 мл 10% раствора глюкозы достоверных изменений основных показателей КОС не отмечали, что подтверждает предположение о различии в метаболизме этих субстратов.Заключение.  Препараты,  содержащие  в  своем  составе  сукцинат,  способны  компенсировать  метаболический  ацидоз.  Их применение сопровождается увеличением потребления кислорода и активацией процессов аэробного окисления. Полагаем, что основу их антигипоксантных качеств составляет восстановление процессов внутриклеточного аэробного метаболизма благодаря коррекции внутриклеточного метаболического ацидоза и увеличения буферной емкости крови.

Influence of sodium desoxyribonucleate on anti-infectious protection and hematopoiesis in patients with polytrauma (randomized prospective, double-blind, placebo-controlled study)

The  aim of the study was to evaluate  the effect of sodium  deoxyribonucleate on anti-infectious resistance and hematopoiesis in patients with polytraumas. A single-center study of sodium  deoxyribonucleate effectiveness approved by the local Ethics Committee (protocol No. 4 05/18/2016), was conducted in 54 patients with polytrauma. The  main  group  included 27 people, at the mean  age of 39 (29-51)  years old; ISS severity score,  26 (22-34). The  comparison group  comprised 27 people, mean  age,  40 years old (26-53), mean  ISS severity score was 25 points (20 to 29). The patients with randomly attributed even numbers were injected with 5 ml preparation from vials of even-numbered series, the patients with odd numbers were treated with preparation from the odd-numbered series. They were injected intramuscularly daily from day 1 to day 10 after the injury. Before treatment, as well as on days 8, 15 after injury, peripheral blood was examined for leukocyte, erythrocyte counts, hemoglobin, total  protein, blood  IL-6, CRP; proportion of CD117+  and  CD34+  mononuclear cells, CD14+ monocytes, CD14+ granulocytes, HLA-DR+  mononuclear cells, defensin + granulocytes.On  the  day  +8,   patients from  the  main  group,  against  the  comparison group  showed  an  increase   in lymphocytes, monocytes, CD117+ and CD34+ cell counts. Serum IL-6 and CRP were decreased in both groups of the patients to a similar  degree. Terms  of hospitalization in the main  group were 32.8 days, against  39.6 in comparison group. The number of complications per 1 case was, respectively, 21 versus 39, thus being 1.8 times less than  in comparison group.  When developing complications, anemia (Hb  &lt; 90 g/l),  or hypoproteinaemia (&lt; 60 g/l) in the main group was, respectively, 2.5and 3.5-fold  less than  in the comparison group.Treatment with sodium  deoxyribonucleate in polytrauma may promote migration of blood precursors to the bloodstream, increase anti-infectious properties of leukocytes, reduce duration of anemia and hypoproteinemia, number of complications and decrease the terms of hospitalization

Magnetic resonance spectroscopy of hippocampal and striatal neurometabolites in experimental PTSD rat modeling

The spectrum of the metabolites in the dorsal region of the hippocampus and striatum was studied using the method of 1H magnetic resonance spectroscopy at experimental modeling of the posttraumatic stress disorder syndrome (PTSD) in rats. PTSD was reproduced by exposure of the cat cue to rats daily along 10 day by 10 minutes at once. The anxiety level of animals was estimated 12 days later after the end of the experimental series of stress. Based on the anxiety index, the rats were divided into 3 phenotypes. The animals with an anxiety index &gt; 0.8 (group 1) had lower plasma corticosterone compared with rats form the control group. In animals with an anxiety index in the range 0.7–0.8 (group 2), an elevated corticosterone level was noted. The rats with an anxiety index &lt; 0.7 (group 3) had a lower plasma corticosterone level compared with animals from the control group. Rats of group 2 were characterized by an increased level of GABA in the hippocampus compared with controls. In the remaining groups, the percentages of GABA in the hippocampus and striatum did not differ significantly from the control. The distribution of NAA differed form that of GABA. The highest level of NAA was found in the striatum for rats from group 1, whereas NAA in animals form groups 1 or 3 did not differ from the control. The NAA level in the hippocampus was similar between all groups, including the control. The results obtained indicate that multiple exposures to psychological stress associated with the sense of proximity of a natural enemy in some animals cause an anxiolytic reaction. These animals are characterized by a stable corticosterone level and a stable level of neurometabolites in the studied structures of the brain. For rats with the highest level of anxiety, a lowered level of corticosterone with a constant level of neurometabolites in the hippocampus and striatum is characteristic. And only in rats with an intermediate level of anxiety, synchronization was observed between the increase in plasma corticosterone and the increase in hippocampal GABA content. The results obtained are in good agreement with the ideas of the protective action of glucocorticoids under PTSD manifested in  restraining violations of the psycho-physiological status. The mate rials allow the neurobiological mechanisms of the protective action of glucocorticoids to be detailed