bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of the structure of web resources using the object model
Authors: Dykhanov Stanyslav , Guk Natalia
Published: November 2022

The methodology for analyzing the structure of a web resource using an object model, which is based on the description of the page in HTML and using style sheets, has been proposed. The object of research is a web resource page, the model of which is depicted as a DOM tree. Data on the structural elements of the tree are supplemented with information about the styles of the design of the pages. To determine the similarity of pages, it is proposed to apply a criterion that takes into account the structural and stylistic similarity of pages with the corresponding coefficients. To compare page models with each other, the method of aligning trees will be used. Editing distance is used as a metric, and renaming operations, deleting, and adding a tree node is used as editing operations. To determine the similarity in styles, the Jaccard metric is used. To cluster web pages, the k-means method with a cosine distance measure is applied. Intracluster analysis is carried out using a modification of the Zhang-Shasha algorithm. The proposed approach is implemented in the form of an algorithm and software using Python programming language and related libraries. The computational experiment was performed to analyze the structure of individual websites existing on the Internet, as well as to group pages from different web resources. The structure of the formed clusters was analyzed, the RMS similarity of elements in the middle of the clusters was calculated. To assess the quality of the developed approach for the tasks under consideration, expert partitioning was built, the values of accuracy and completeness metrics were calculated. The results of the analysis of the structure of the web resource can be used to improve the structure of the components of the web resource, to understand the navigation of users on the site, to reengineer the web resource
Development of a method for assessing air dustiness in the main fairing of the launch vehicle
Authors: Biliaiev Mykola , Biliaieva Viktoriya , Rusakova Tetiana , Kozachyna Vitalii , Berlov Oleksandr , Semenenko Pavlo , Kozachyna Valeriia , Brazaluk Iuliia , Klym Viktoriia , Tatarko Larysa
Published: November 2022

The object of this study is the process of thermostating the main fairing with a satellite at the stage of prelaunch preparation of the launch vehicle. When thermostating, it is necessary to predict the risk of dust contamination of the satellite surface. Currently, there are no normative methods for solving this problem. A numerical model has been proposed that makes it possible to quickly predict the dynamics of pollution of any surface of the satellite.
A numerical model has been built for analyzing the zones of dust pollution of air in the main fairing of the launch vehicle during thermostating. The novelty of the model is the use of the Laplace equation for the speed potential, based on which the problem of aerodynamics is solved, namely, the flow rate in the main fairing is determined. Based on the model built, a computational experiment was conducted for dust particles with a diameter of 6 µm that fall into the main fairing during thermostating.  The results of the research showed that the formation of areas of dust pollution near the satellite is influenced by the geometric shape of the satellite, which affects the formation of an uneven air velocity field in the main fairing and the organization of air supply to the main fairing.
Calculations are performed within a few seconds, which makes it possible during working day to conduct a set of studies into the rational choice of the organization of air exchange of the main fairing during its thermostating. The constructed numerical model can be used in design organizations to scientifically substantiate the thermostating mode of the main fairing, taking into consideration the characteristics of the satellite located in it
Identification of the patterns of influence the number of reinforcing elements and the inhomogeneity parameter of the shell material on frequencies of a reinforced inhomogeneous orthotropic spherical shell with a medium
Authors: Guliyev Etibar , Allahverdiyev Rashad , Kheyrabadi Qezale
Published: November 2022

Spherical shells are used in many areas of the national economy. Spherical domes are widely used in the construction of various structures (technoparks, testing laboratories, entertainment complexes, reservoirs, etc.). They are also used in aircraft, ship structures, radar antennas and other structures. It is known that coatings have sufficient strength and durability even with a small thickness. However, to increase the working life of coatings, to ensure their long-term operation, as well as to increase their hardness, it is necessary to strengthen them on the surface or inside with rods. Sometimes it is possible to reduce the weight of the structure and save material consumption by strengthening it with. One of the advantages of these structures is that they give the maximum useful volume, being both load-bearing and enclosing structures. Checking the shells for stability is a priority task, since it is known that the shells, even with an insignificant thickness, have great strength and therefore their insufficient stability can be a criterion determining the bearing capacity. This article is devoted to identifying the regularities of the influence of the number of reinforcing elements and the inhomogeneity parameter of the shell material on the frequencies supported by an inhomogeneous orthotropic spherical shell with a medium. To solve the problem under consideration, the Hamilton-Ostrogradsky variation principle is applied. The frequency equation is constructed and implemented numerically. Such studies have not been considered for a reinforced spherical shell with a no uniform filler in thickness
Identifying of the effect of the number of tesla fuses in a coiled collector on direct and reverse heat transfer
Authors: Majdi Hasan Shakir , Altalib Mustafa Abdul Salam , Abdullah Saieed Ali Najim , Abbas Waleed AbdulMunem , Hamid Omar Talal , Ibrahim Al-Saaidi Hussein Alawai
Published: November 2022

Work was done on the Tesla valve in this study with a coiled and three-dimensional shape, where a different number of these channels and a direct and reverse flow turbine were used to compare the changes that obtain the amount of pressure and temperatures. With the conception of the technology of transferring heat energy in various heat exchangers, it became necessary to develop our technologies that increase the transmission of this energy, and we must refer to the inventions that contributed to the development of the heat transfer system and the three energy laws. They contributed to the development of some mechanical systems, where the Tesla valve is considered one of the valves that have two directions of flow, the first is direct, in which the pressure value is low, and the other is reverse, which occurs when movement is disturbed due to the direction of the channel in which it can be used. This concept can be used to improve heat transfer.
Where the results establish that an increase in the number of channels positively affects the pressure and thus gives more outlets for the passage of water, a study has shown. In the case of four channels an exit temperature of 304.14 K was obtained, which is the highest temperature reached in cases where the direction of flow is direct. The pressure value was in the case in which the channel is a quadrilateral, and the pressure value reached 209 pa. This data are useful and important because the direct exit score has reached 305.74 K for the Tesla valves, which are designed to give enough time for the heat to transfer to the water. The main principle of the Tesla valve is the reverse direction, which works to obstruct the movement of the fluid, and thus increases the pressure and reduces the velocity of the flow
Improvement of cupcake technology with the addition of dried beet pomace
Authors: Zagorulko Aleksey , Kasabova Kateryna , Zahorulko Andrii , Serik Maksym , Bolkhovitina Olena
Published: November 2022

The object is de-sugared beet pomace, which contains a large amount of dietary fiber in its composition, as well as the technology of cupcakes with its addition. The task of enriching cupcakes with useful substances is tackled. A production technique of dried powdered beet pomace has been substantiated, which is characterized by low-temperature concentration modes in the rotary evaporator and post-drying in the roller IR dryer, which could contribute to the preservation of physiologically functional ingredients. The rheological characteristics of concentrated beet pomace in the rotary evaporator in the temperature range of 65–75 °C were determined. The established indicators revealed a tendency to reduce the effective viscosity depending on the temperature in the range of 42 to 27 Pa·s. For the speed of the rotary evaporator agitator of 200–300 min–1, the maximum level of effective viscosity of beet pomace of 3–5 Pa·s was established.
Studies of the rheological characteristics of the dough with the introduction of dried beet pomace have made it possible to establish an increase in its elastic-viscous properties with an increase in the amount of additive. The highest indicator of effective viscosity ηef (Pa∙s) of the studied dough samples for cupcakes with the addition of an additive of 10 % is 347; 15 % – 384; 20 % – 442; and control – 287, respectively. The compression of the crumb of finished cupcakes was also determined, which increases by 10.2–22.4 % with an increase in the amount of beet pomace powder. The organoleptic and physical-chemical indicators of the quality of cupcakes revealed the optimal amount of application of dried beet pomace – 15 %. The selected sample contains physiologically functional ingredients, namely dietary fiber, low molecular weight phenolic compounds, minerals. The technology can be introduced into the confectionery industry
Pharmacognostic study of cetraria islandica (L.) Ach. thalli made in Ukraine
Authors: Shpychak Alina , Khvorost Olga
Published: November 2022

The aim was to conduct a pharmacognostic study of C. islandica thalli harvested in Ukraine.

Material and methods. The study included seven series of C. islandica thalli harvested in Ukraine. Pharmacognostic research was conducted by using generally accepted methods. Quantitative determination of total polyphenols was performed by a spectrophotometric method in terms of pyrogallol and dry raw materials following the requirements of the SPhU 2.0 monograph. The component composition of flavonoid compounds and carboxylic acids was performed by HPLC.

Results. The pharmacognostic study of 7 series of the C. islandica raw materials was performed. Morphometric parameters were determined, including the fractional composition according to the size of thalli in each series. For the first time, fractions of the mineral and foreign organic matter were separated. The content of mineral foreign matter ranged from 0.22 ± 0.01 % to 2.80 ± 0.12 %; the content of organic foreign matter ranged from 0.15 ± 0.01 % to 2.14 ± 0.11 %. Due to the total foreign matter content, 6 series of the raw materials fulfilled the requirements of the SPhU 2.0 monograph. The accordance of morphological and anatomical description of the series to the requirements of the SPhU 2.0 monograph is shown. New distinctive diagnostic features of the morphological structure were found, namely: coalescence of blades with forming a membrane and branching of cilia along the edge of blades. For the first time for the series of raw materials harvested in Ukraine, the quantitative content of the sum of polyphenols in terms of pyrogallol and dry raw materials was determined, which ranged from 1.21 ± 0.05 % to 1.73 ± 0.04 %. For the first time for C. islandica thalli, the presence of flavonoid compounds: quercetin, luteolin, kaempferol and rutin, and carboxylic acids: sinapic, trans-cinnamic and quinic acids was determined.

Conclusions. The obtained results can be used as a basis for the relevant sections of the national part of the monograph "Cetraria Iceland" in SPhU 2.0
Millî Eğitim Şûra Kararlarında Okul Kütüphaneleri: Bir Doküman Analizi Çalışması
Authors: Özkan Meltem
Published: November 2022

Okul kütüphaneleri bilgiye erişimin yanı sıra eğitim ve öğretim faaliyetlerini de desteklemektedir. Buna bağlı olarak bu çalışmada Millî Eğitim Bakanlığının en yüksek danışma organı olan Millî Eğitim Şûralarında okul kütüphaneleri konusunda ele alınan kararlar analiz edilerek okul kütüphanelerinin, şûra kararlarında ne derece gündemde tutulduğunun ve şûralarda kütüphanelere ne derece önem verildiğinin ortaya konulması hedeflenmiştir. Bu kapsamda, 1939-2021 yılları arasında gerçekleştirilen tüm Millî Eğitim Şûra kararlarına ait dokümanlar kullanılmıştır. Dokümanlarda, çalışma kapsamında belirlenen “bilgi, kitap, kütüphane, kütüphaneci, okul kütüphanesi, okuma” kavramlarına ilişkin kararların olup olmadığı, karar varsa hangi bağlamda ele alındığı tespit edilmiştir. Dokümanların incelenmesi için nitel araştırma yöntemlerinden doküman analizi kullanılmıştır. Analiz için web tabanlı metin analiz ve metin düzenleme araçlarından biri olan Voyant Tools kullanılmıştır. Belirlenen kavramlar 1946 ve 1953 tarihli şûralardaki kararlarda yer almazken 1982 ve 2021 yılındaki şûra kararlarında hepsi yer almıştır. Kütüphanenin eğitimle ilişkisi göz önüne alındığında kütüphane, kütüphaneci ve okul kütüphanesi 7. şûradan (1962) itibaren gündeme gelmeye başlamıştır. Kütüphaneci ve okul kütüphanesi 11. şûradan (1982) sonra 20. şûraya (2021) kadar kararlarda yer almamıştır. Bu çalışmayla eğitim içinde önemli bir yeri olan okul kütüphanelerinin, eğitim sistemini düzenleyici nitelikte tavsiye kararlarının alındığı şûralardaki yeri ortaya konularak alan yazına katkı sağlamak hedeflenmektedir. Geçmişten günümüze gerçekleştirilen yirmi Millî Eğitim Şûrasının tüm kararlarını okul kütüphaneleri özelinde analiz eden bir çalışma bulunmamaktadır. Bu açıdan çalışmanın, alan yazına katkı sağlayacağı düşünülmektedir.
Psychological resources for overcoming stress at different stages of a sports career
Authors:   Federal state budgetary educational institution of higher education ", Sovmiz Z. R. ,   Kuban state university of physical culture, sports and tourism",   , Krasnodar, Russia
Published: November 2022

The article presents the problem of overcoming stress by athletes at different stages of their sports career. The study involved 76 athletes aged 18-23 years, competing in various sports teams. According to the results of the identification of personal and group coping resources in athletes, a cluster analysis was carried out. The purpose of clustering is to identify possible options for regulating individual and team coping strategies. A comparison of groups that united younger and older athletes showed that the success of overcoming stress at different stages of a sports career differs in determinants and the degree of their inclusion in the process of maintaining psychological stability. At the initial stage of their career, athletes randomly involve coping resources in the fight against stress, using mainly individual coping strategies. At the peak of a sports career, the relevance of the use of individual copings decreases and the importance of team copings increases, resources are used in a balanced and reasonable manner.
Application of fitness technologiesin the training process qualified skaters
Authors:   Ural State University of Physical Culture, Melikhova T. M.
Published: November 2022

The article presents the features of the use of fitness technology, namely, complexes of myofascial release (MFR) and Pilates in the training of qualified speed skaters in the transition period, aimed at improving the psycho-emotional state of athletes in terms of reactive and personal anxiety. As a recovery, a comprehensive application of fitness technology tools was used - exercises from myofiscial release and pilates, which were included in the training process during the transition period of the annual macrocycle of qualified skaters. The results of the pedagogical experiment obtained during the research and testing of athletes using the Spielberger-Khanin method are presented.
Implementation of preparedness for competitions in athletes with different expression of metapprocesses
Authors:   Saint-Petersburg State University, Saint Petersburg, Russia, Lovyagina A. E.
Published: November 2022

The article presents the results of a study of the relationship between metaprocesses and the implementation of preparedness for competitions among athletes. The aim of the study is a comparative analysis of the implementation of preparedness for competitions among athletes with different severity of metaprocesses. Methods: psychological testing, questioning, mathematical and statistical data processing. Methods: questionnaire "Style of self-regulation of behavior", a questionnaire for diagnosing metaprocesses. Sample: male and female athletes aged 18-34 involved in various sports. Results: it has been established that the use of metacognitive, metaemotional and metavolitional processes has a positive effect on the implementation of the preparedness of athletes for competitions. Improving the formation of regulatory processes of control and evaluation is interconnected with an increase in the frequency of updating metacognitive and metavolitional processes, as well as with an improvement in the implementation of preparedness for competitions.
Testes rápidos de HIV, sífilis e hepatites crônicas na população carcerária em um complexo penitenciário de Salvador (BA), Brasil
Authors: Leite Alice Gramosa da Silva , Damasceno Luanna Mota , Conceição Suzana Coelho , Motta Pedro Flávio Costa
Published: November 2022

Resumo O objetivo do estudo foi analisar quantitativamente resultados de testes rápidos de vírus da imunodeficiência humana (HIV), sífilis e hepatites crônicas na população carcerária em complexo penitenciário de Salvador (BA). Trata-se de um estudo transversal. A amostra foi composta por homens privados de liberdade no período de agosto de 2018 a agosto de 2020, com testes rápidos sendo realizados. Para análise dos dados foi utilizada estatística descritiva e razão de prevalência com os respectivos intervalos de confiança de 95%. Foram estudados 6.160 homens, com maioria (93,1%) de pretos e pardos, residentes de Salvador (65,8%), com escolaridade predominante de ensino fundamental (65,3%). Das pessoas privadas de liberdade, 581 (9,4%) obtiveram resultado reagente para uma ou mais IST, sendo sífilis a mais prevalente (80%). As variáveis idade maior de 25 anos [RP = 1,37 IC95% (1,17-1,61)] e nível de escolaridade sem presença de ensino superior [RP = 2,16 IC95% (1,04-4,49)] se mostraram associadas à maior taxa de positividade nos testes, enquanto o não compartilhamento de drogas em algum momento da vida mostrou ser fator protetor à positividade nos testes [RP = 1,28 IC95% (1,07-1,53)]. Conclui-se que existiu uma baixa prevalência das IST na amostra estudada, sendo sífilis a mais prevalente.
Ciência popular, divulgação científica e Educação em Ciências: elementos da circulação e textualização de conhecimentos científicos
Authors: Fioresi Claudia Almeida , Silva Henrique César da
Published: November 2022

Resumo: Neste artigo apresentamos um modelo teórico que toma a Divulgação Científica como parte de um processo amplo de produção, circulação e textualização do conhecimento científico. Assim, realizamos uma articulação entre Ludwick Fleck, um autor do campo da epistemologia, e Authier-Revuz, uma autora do campo da linguagem. Com Fleck buscamos compreender as características textuais e papéis epistemológicos de diferentes textos na produção dos fatos científicos, aprofundando sua noção de ciência popular. Com Authier-Revuz, destacamos aspectos sobre um ponto de vista discursivo para a Divulgação Científica. Nossa perspectiva critica visões unidirecionais sobre a Divulgação da Ciência e destaca o papel constitutivo desse tipo de textualização na produção e manutenção dos conhecimentos científicos, em movimentos bidirecionais entre ciência e público. Essa articulação teórica se mostrou profícua para refletir sobre aspectos da Divulgação Científica, o lugar que ocupa, social e epistemologicamente, na produção da ciência, e para derivar implicações para a Educação Científica.
FLEXIBILITY TRAINING IMPROVES ELEGANCE IN ICE BALLET
Authors: Zhou Yu
Published: November 2022

ABSTRACT Introduction Ice ballet is performed through various movements with high artistic attributes such as skating, foot movement, rotation, and jumping on ice. The development of ice ballet flexibility can make the movements more graceful and coordinated and improve muscle strength. The athlete’s flexibility can prevent accidents and reduce injuries. Objective This study aimed to analyze the effect of body flexibility on improving movement skills in ice ballet. Methods This paper selects ten ice ballet athletes as the object of research. The physiological and biochemical indicators of the athletes are examined by employing literature, experience, and data statistics. An investigation of the effect of physical flexibility on the performance of ice sports is carried out. Results The athletes exhibited high flexibility, and their muscles, tendons, and ligaments evidenced improved elasticity and extensibility. There is a correlation between body fat and flexibility in the athletes. The athletes exhibited no metric difference in body composition after the competition. Conclusion Flexibility training is significant in improving the movement abilities of athletes. Focusing on flexibility training in athletes’ daily training allows them to improve the flexibility and extensibility of their muscles, tendons, and ligaments. There is a correlation between body fat and flexibility in athletes. The athletes had approximately the same body composition metrics after the competition. Focusing on flexibility training during athletes’ daily training allows for improved flexibility in sports movements. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
EFFECTS OF VIBRATION TRAINING ON BALANCE STABILITY IN LONG JUMPERS
Authors: Jiang Danni
Published: November 2022

ABSTRACT Introduction Vibration training refers to the introduction of vibration methods into the daily training of athletes for body stimulation. In this way, coaches improve athletes’ strength, flexibility, and balance. Athletes can use vibration to stimulate neuromuscular activation. This allows more active units to be concentrated in the muscular contraction. In this way, the athlete’s muscular strength can be increased. Objective This study aimed to analyze the relationship between vibration training and the balance ability of long jumpers. Methods This paper selects several long jumpers as research subjects. The effects of vibration exercises at different frequencies on athletes’ stability are discussed, employing experimental comparison. In this context, statistical calculations are performed on the experimental results. Results There was no difference in balance ability between the vibration and general training groups before training (P>0.05). The athletes in the vibration training group showed more significant improvement in balance after a training period than the general training group. There were significant differences in the data between the two groups (P<0.01). Conclusion Vibration strength training can effectively improve the balance ability of jumpers. Athletes should increase the frequency of vibration training in their daily training. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
INFLUENCE OF UPPER BODY STRETCHING EXERCISES ON SHOT PUT
Authors: Teng Yusong , Chen Anyu , Xie Zhaoyu , Zhang Jiahe , Liu Wei
Published: November 2022

ABSTRACT Introduction The technique in the shot put and the ability in the throwing stage are two important factors that determine the ability of athletes. Qualified experts and coaches attach great importance to training and research on the ability of the throwing stage and the ability to throw. Objective Compare gravity load training and single incremental load training through practical means, analyzing the impacts on throwing ability in athletes. Methods The self-assessment method was used to conduct the comparative experiment on different forms of strength training in 20 college students. The experimental scheme adopts the single incremental load strength training, and the control scheme adopts the traditional barbell training. Results : After the experiment, the hand angle of group I was significantly higher than that of group II (P < 0.05); after the experiment, the shoulder angle of group I was significantly higher than that of group II (P < 0.05); after the experiment, the performance of the seated shot placed in group I was significantly higher than that of group II (P < 0.05), and there was no significant difference in the standing performance (P > 0.05). Conclusion Single incremental load training can significantly improve the throwing ability of shot put athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
EFFECTS OF VIBRATION TRAINING ON THE PHYSICAL FITNESS OF SHORT-DISTANCE SWIMMERS
Authors: Jiang Liqi , Li Tengda
Published: November 2022

ABSTRACT Introduction Vibration training is a widespread exercise. Existing experimental results show that using vibration strength exercises under the same loading conditions can improve the muscular strength of swimmers’ lower limbs. Objective This paper especially studies the effect of vibration exercise on the physical quality of swimmers under various conditions. Methods The athletes were randomly divided into two groups: the experimental group and the control group. The experimental group used a vibrometer to exercise the lower limb muscles. The control group engaged only in routine training. After eight weeks of practice, the runners tested in the 100m, 150m, 200m, and 400m. The present article also explores the relationship between swimmers of different ages. Results Compared to the control group, there was a significant difference in maximum hip extensor volume between the experimental and control groups. There was also a significant difference between the two groups (P<0.05). The most significant increase in maximal exercise capacity between the two groups was in the ankle. The change in maximum load between the two groups was also significant (P<0.01). Conclusion The vibration training method can improve the swimmer’s knee flexor group. Swimmers can improve their body coordination by performing vibration exercises. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
IMPROVING EXPLOSIVE BODY CAPACITY IN FEMALE SHORT TRACK SPEED SKATERS
Authors: Li Jianjun , Ge Xinchao , Liu Yang
Published: November 2022

ABSTRACT Introduction The peculiar characteristics of short track speed skating should be integrated into the psychology of competitions; it is considered that elite athletes engaged in this particular sport should have a healthy psychic condition. Objective Investigate the explosive power of female speed skaters in short track speed skating. Methods 10 key athletes from the national short track speed skating team were selected, and explosive power was tested by T-test, hexagonal test, and pro sensitivity test. Data analysis was performed using an independent sample t-test, differences in the results of related test indicators between groups were analyzed, and repeated measures analysis of variance was used. Results During the explosive kick phase, knee extension speed increased linearly from 210°/S to 600°/S, and hip extension speed increased linearly from 200°/S to 400°/S. Conclusion The development of muscle group strength and explosive power during training often shows differences in the degree of contraction, which is related to the arrangement of training methods. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
INFLUENCE OF CORE STRENGTH TRAINING ON PELVIC GIRDLE STRENGTH IN TABLE TENNIS PLAYERS
Authors: Dai Lei
Published: November 2022

ABSTRACT Introduction Core strength training has attracted much attention in modern competitive sports. Objective Study the effect of core strength training on pelvic girdle strength in table tennis players. Methods 50 students aged 12-14 from the table tennis club of an elementary school affiliated with a normal university were divided into a control group and an experimental group. They performed a one-week training of core strength exercises. Through a series of technical index tests, the data before and after using these strength training methods were obtained for comparative analysis. Results After the core strength training, there was no significant difference between the other four indices in the experimental group and the control group, except for the fact that there was a significant difference in the performance of running around the platform (P < 0.05). Conclusion After the experiment, the four indexes reflecting the strength of the core muscle group in the experimental group were significantly optimized, while the four indexes in the control group were not significant, showing that core strength training has a more significant effect on improving the strength of the core muscle group. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
EFFECTS OF STRETCHING TRAINING ON LOWER LIMB EXPLOSIVE STRENGTH IN FIGURE SKATING ATHLETES
Authors: Mochida Miho , Jin Boyang , Zhang Yudong
Published: November 2022

ABSTRACT Introduction Figure skating is characterized by a high degree of flexibility, balance, and technical precision. It belongs to the sports group that combines high speed and endurance. Therefore, it is very important for athletes to correctly master these techniques and physical strength and execute precise movements in their performances. Objective Explore the effect of stretching training on the lower limb explosive strength of figure skating athletes. Methods 20 outstanding male figure skaters from the Chinese team were selected as volunteers. The experimental method was used using the OPTOJUMP test system, among other instruments, for comparison of pre and post-intervention results. Results Through scientific observation, it was found that skaters have less requirement for upper limb strength training, minimizing its importance because upper limb strength training can assist in motor coordination of athletes’ lower limbs and help them stabilize to perform dynamic movements. Therefore upper limb strength training is also emphasized in the proposed training. Conclusion The stretching training on the lower limb strength of figure skating athletes proved to be useful for the improvement of performance and execution of the intrinsic movements of the sport. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
EFFECTS OF STRENGTH TRAINING ON THE FEMALE ATHLETE’S LOWER EXTREMITY
Authors: Wu Xian
Published: November 2022

ABSTRACT Introduction The innovation and development of complex movements in aerobic gymnastics present higher demands for the athletes’ overall qualifications. Objective Analyze the effect of special lower limb strength training on the performance of female gymnasts. Methods Four female gymnasts from sports colleges were selected as research targets. The method is discussed using literature materials, expert interviews, experimental methods, and mathematical statistics. Results There was a significant difference in the athletes’ body composition index before and after training (P<0.05). The exceptional quality of female aerobic gymnastics athletes after the special lower limb strength training was significantly elevated compared with that before the training. Conclusion The strength training method used in this paper significantly improves the individual strength of the lower limbs of female gymnasts. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
IMPROVEMENT OF MOTOR COORDINATION SKILLS IN GYMNASTICS ATHLETES
Authors: Wu Xian , Huang Chao
Published: November 2022

ABSTRACT Introduction The great difficulty and the high risk are inherent marks of artistic gymnastics. It demands motor coordination of large muscle groups. Objective Improve the training of body coordination control in gymnasts. Methods We randomly selected 16 gymnasts as research volunteers, randomly divided into two groups of the same age distribution. After the training period, a new training protocol was implemented, and motor coordination control was analyzed after this intervention. Results There was no significant difference in a one-sided comparative index (P>0.05). There were statistically significant differences in the balance index and the speed index in the fast touch point direction in the athletes (P<0.01). Compared with the control group, there was a significant difference in the overall test index between the experimental groups (P<0.01). The motor coordination of the experimental group had a significant improvement. Conclusion The techniques of cross-striking, fast pedaling, balance, jump rope, two-handed grip, two-handed dribbling, kicking, and seven other techniques evaluated showed a great relationship with the motor coordination of gymnastics athletes. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.
IMPROVEMENTS IN THE PHYSICAL COORDINATION SKILLS OF GYMNASTS
Authors: Gao Guojun
Published: November 2022

ABSTRACT Introduction In the specific sports of gymnastics, athletes’ physical quality and professional ability are actively improved, and a special training plan is also actively designed. Objective Improve the physical coordination ability of gymnastic athletes. Methods 50 professional gymnasts were selected, 25 in the experimental group and 25 in the control group. The intervention took 2 hours of daily training in gymnastics class; the period was in a non-competitive season cycle. Results After the experiment, the average performance of the athletes in the experimental group was higher than those before the experiment in the four indicators of push-ups, extensions, supine, and high leg kicks; however, in the three indicators of push-ups, pull-ups, and high leg kicks, the standard deviation after the experiment presented higher than that before (the results after the experiment were not shown to be as stable as those before the experiment). Conclusion During exercise, especially in complex movements, abdominal core strength balances the distribution of physical force for athletes, reducing overall energy expenditure. Thus, athletes can coordinate lower limbs to move with greater speed and precision. Level of Evidence II; Therapeutic studies - investigation of treatment outcomes.
Hydrogen peroxide is involved in drought stress long-distance signaling controlling early stomatal closure in tomato plants
Authors: Reis A. D. P. , Carvalho R. F. , Costa I. B. , Girio R. J. S. , Gualberto R. , Spers R. C. , Gaion L. A.
Published: November 2022

Abstract It has long been hypothesized that hydrogen peroxide (H2O2) may play an essential role in root-to-shoot long-distance signaling during drought conditions. Thus, to better understand the involvement of H2O2 in drought signaling, two experiments were carried out using tomato plants. In the first experiment, a split-root scheme was used, while in the second experiment, the tomato plants were grown in a single pot and subjected to drought stress. In both experiments, H2O2 and catalase were applied together with irrigation. Control plants continued to be irrigated according to the water loss. In the split-root experiment, it was verified that the application of H2O2 to roots induced a clear reduction in plant transpiration compared to untreated or catalase-treated plants. In the second experiment, we observed that H2O2-treated plants exhibited similar transpiration when compared to untreated and catalase-treated plants under drought stress. Similarly, no difference in water use efficiency was observed. Thus, we conclude that the increase in H2O2 in the root system can act as a long-distance signal leading to reduced transpiration even when there is no water limitation in the shoot. But it has little effect when there is a reduction in the shoot water potential.
Modification of Mediterranean Diet Pyramid from an Island’s perspective
Authors: DAYI Taygun , OZTURK Mujgan , OZGOREN Murat , ONIZ Adile
Published: November 2022

ABSTRACT Objective The present study aimed to determine traditional and local food consumption and adherence to the Mediterranean diet in Cyprus. And also, aimed to improve their adherence to the Mediterranean diet and traditional and local food consumption. From this point, this current study aimed to revise the Cyprus Mediterranean Diet Pyramid, based on the Current Mediterranean Diet Pyramid. Methods The sample size was calculated as a minimum of 386 according to a 95.0% confidence interval, and a 5.0% error. This study was conducted online between November 2020-April 2021 in Cyprus. All volunteers were invited to this study on the national public internet platforms. Participant´s adherence to the Mediterranean diet was determined by the Mediterranean Diet Adherence Screener. Traditional and local food consumption frequencies were determined by a Food Frequency Questionnaire. A novel Cyprus Mediterranean Diet Pyramid was developed with traditional and local food items for Cyprus. The modification was also aimed to safeguard planet health, to increase traditional food consumption and adherence to the Mediterranean diet. Results 1,007 adults (78.0% native islanders/Cypriots) participated voluntarily in the current study. The mean Mediterranean Diet Adherence Screener score was 7.55±2.30 points and only 34.4% had high adherence to the Mediterranean diet. According to their responses, there was a need to increase use of olive oil, vegetables, fruits, fish, and red wine consumption and to decrease red meat and dessert consumption. According to responses to the Mediterranean Diet Adherence Screener and their traditional/local food consumption frequencies an up-to-date Cyprus Mediterranean Diet Pyramid was done hence a national food pyramid for Cyprus. Commonly consumed traditional and local foods were added to the pyramid to facilitate increased adaptation of the Mediterranean diet in the general population. Adequately consumed foods were added to make it more region-specific and rarely consumed foods were added to help to increase consumption. Conclusion This modification is believed to be instrumental to increase Mediterranean diet adaptation, traditional/local food consumption and decrease the impact of nutrition on the planet´s health. And also, this modification can shed light on the development of the other traditional food pyramids.
School feeding in Federal Institutes: characterization and analysis of food acquisitions from family farming
Authors: ARAGI Juliana Cesário , BANDONI Daniel Henrique
Published: November 2022

ABSTRACT Objective The Federal Institutes of Education, Science, and Technology provide Basic Education and, thus, must execute the National School Feeding Program. The study aimed to characterize school feeding in these institutes, focusing on the purchase of food from family farming. Methods Cross-sectional study with Brazilian Federal Institutes that offer Basic Education courses. The characteristics of purchases from family farming in 2019 were analyzed, as well as the type of management of the school food service, the presence of a nutritionist in the unit acting as technical manager, and the presence of a canteen. Pearson’s chi-square test was used to analyze the association between the variables, adopting a statistical significance level of 5%. Results A total of 171 campuses, distributed in the five Brazilian regions, participated in the study. Among the participants in the survey, 35.1% did not offer any type of food to their students. The percentage of Federal Institutes that carried out acquisitions from family farming was 48%. The presence of a nutritionist was verified in 33.9% of the campuses and associated with food purchases from family farming. The type of food service management was shown to be related to the diversity of the purchases and the main categories of purchased foods. Conclusion The results demonstrate the importance of monitoring the school feeding policy at the federal level, being possible to characterize the school feeding in the Federal Institutes, also showing that more than half of the sample did not make purchases from family farming.
CANONICAL CORRELATIONS BETWEEN MORPHOLOGICAL AND PRODUCTION TRAITS IN SPECIAL TYPES OF RICE
Authors: XAVIER MARIANA CAROLINE GUIMARÃES , ARAÚJO JULIANA CORRÊA , MENEZES BRUNA RAFAELA DA SILVA , DAMASCENO JÚNIOR PEDRO CORRÊA
Published: November 2022

ABSTRACT The rich genetic diversity and wide adaptation of rice (Oryza sativa L.) to different environments provide fundamental resources for its conservation and improvement. The analysis of canonical correlations can be used to increase the efficiency of selecting superior genotypes, as several traits are evaluated simultaneously. Thus, this study aimed to compare morphoagronomic traits and estimate the magnitude of the association and interdependence between two groups of traits in genotypes of special types of rice. The experiment was carried out between November 2020 and April 2021 at the Department of Plant Science of the Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica - RJ. The experimental design consisted of randomized blocks, with four replications. Seventeen genotypes were evaluated, five of them consisting of white rice and eleven special types of rice. Two groups of variables were used to determine the canonical correlations, with group I composed of four morphological traits and group II composed of four yield components. Significant differences (P<0.01) were observed between genotypes for the eight evaluated traits. The first, second, and third pairs showed significant canonical correlations at a 5% probability, demonstrating that these groups are not independent. The selection of superior genotypes for production can be based on choosing plants with higher flag leaf thickness, higher height, and lower flag leaf angle.
GENETIC VARIABILITY OF Parkia platycephala POPULATIONS: SUPPORT FOR DEFINING SEED COLLECTION AREAS
Authors: SILVA DANDÁRA YASMIM BONFIM DE OLIVEIRA , FARIAS SÉFORA GIL GOMES DE , ARAUJO POLIANA COQUEIRO DIAS , SOUSA MOEMA BARBOSA DE , SILVA ROMÁRIO BEZERRA E , OLIVEIRA CAIO VARONILL DE ALMADA
Published: November 2022

ABSTRACT Loss of genetic variability in natural populations affects negatively the adaptive and evolutive process of plant species. In this context, the objective of this work was to evaluate the existing genetic variability between and within natural populations of P. platycephala, using biometric characters of fruits and seeds and physiological characters of seeds and seedlings, and, thus, assess the potential for selection of mother trees, indicate areas for seed collection and use, and generate support for conservation and pre-breeding of plant species. A completely randomized experimental design was used, with 45 treatments (progenies) and four replications of 25 seeds. The progenies were evaluated in laboratory, using seeds collected from 45 mother trees sampled in three natural populations. The following characters were evaluated: seed germination percentage, germination speed index, and mean germination time; shoot and main root lengths; and seedling shoot and root dry weights. The data were subjected to RELM/BLUP analysis for estimating genetic parameters and correlations and to analyses of genetic divergence (UPGMA). The populations present genetic differences to each other and a significant variation between progenies for all characters evaluated, and the variation was greater within the populations. The characters evaluated present high genetic control; therefore, they can be used in analysis of genetic variability of populations and progenies of P. platycephala, thus assisting in the identification of areas for seed collection, conservation programs, and pre-breeding of the species.
FORAGE CACTUS COMBINED WITH DIFFERENT SILAGES AS DIETS FOR LACTATING RED SINDHI COWS
Authors: SOBRAL ACIR JOSÉ DA SILVA , MUNIZ EVANDRO NEVES , SANTOS RAFAEL DANTAS DOS , RANGEL JOSÉ HENRIQUE ALBUQUERQUE
Published: November 2022

ABSTRACT Forage cactus (Opuntia ficus-indica Mill) is an important forage resource in the Northeast region of Brazil due to its adaptation to the edaphoclimatic conditions of the region, mainly to the drought periods. The objective of this work was to assess the effects of diets with forage cactus combined with different sources of fibers on dry matter and water intakes, digestibility, microbial protein production, balance of nitrogen compounds, and performance of Red Sindhi cows in the Semiarid region of Brazil. The silages used were prepared from plants of Atriplex nummularia Lindi., Sorghum bicolor (L.) Moench, Gliricidia sepium (Jacq.) Walp., and Manihot pseudoglaziovii Pax & K. Hoffm. They were included in forage cactus-based diets at a roughage to concentrate ratio of 58:42. The cows were distributed in a 4×4 double Latin square design with 12 days for each period. Water intake presented differences (p<0.05) when using the diet with A. nummularia silage (19.42 L d-1). The diet with S. bicolor silage resulted in lower (p<0.05) coefficient of digestibility of dry matter (48.71%) than the diet with A. nummularia silage (68.46%). The diet with A. nummularia silage resulted in higher (p<0.05) microbial synthesis than that with G. sepium silage, 115.01 and 80.07 g CPmic kg-1 TDN, respectively. The silages evaluated, combined with forage cactus, can be used as diets for lactating Red Sindhi cows without affecting the daily dry matter intake, milk production, fat content, microbial protein synthesis, and balance of nitrogen compounds.
METHODS FOR ESTIMATING THE OPTIMAL PLOT SIZE FOR BLACK OAT, COMMON VETCH AND FORAGE TURNIP INTERCROPPING
Authors: CARGNELUTTI FILHO ALBERTO , NEU ISMAEL MARIO MÁRCIO , BUBANS VALÉRIA ESCAIO , SOMAVILLA FELIPE MANFIO , OSMARI BRUNO FILLIPIN
Published: November 2022

ABSTRACT The objective of this work was to compare three methods of estimating the optimal plot size to evaluate the fresh matter in black oat (Avena strigosa Schreb), common vetch (Vicia sativa L.) and forage turnip (Raphanus sativus L.) intercropping. Six uniformity trials with black oat, common vetch and forage turnip intercropping were carried out. Three trials were evaluated at 84 days after sowing and the other three trials at 119 days after sowing. The fresh matter was evaluated in 216 basic experimental units (36 per trial) of 1 m × 1 m. The optimal plot size was determined using the methods of modified maximum curvature, linear response and plateau model and quadratic response and plateau model. The optimal plot size differs between the methods and decreases in the following order: quadratic response and plateau model (15.13 m2), linear response and plateau model (8.24 m2) and modified maximum curvature (5.62 m2). The optimal plot size for assessing the fresh matter of black oat, common vetch and forage turnip, grown in intercropping, is 15.13 m2. This size can be used as a reference for future experiments.