Trakia Journal of Sciences最新文献_第4页

STUDY OF TEACHERS' OPINION ON THE STATE OF THE SUBJECT PHYSICAL EDUCATION AND SPORTS IN THE BULGARIAN SCHOOL 保加利亚学校教师对体育学科现状的看法研究

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547//tjs.2022.03.007

G. Ignatov

引用次数: 0

HOW DO YOU FIND OUT IF THE PRICE YOU HAVE SET IS CORRECT? 你怎么知道你设定的价格是否正确?

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547//tjs.2022.03.010

Iv. Kostova

引用次数: 0

DAILY ACTIVITY OF THE HORSE FLIES (DIPTERA: TABANIDAE) IN THE CENTRAL BALKAN MOUNTAINS, BULGARIA 保加利亚巴尔干中部山区马蝇(双翅目:虻科)的日常活动

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.01.001

D. Ganeva

引用次数: 2

ESTABLISHING OF THE EFFECT OF DIFFERENT LEVELS OF TRITICALE IN COMPOUND FEED FOR GROWING PIGS 不同水平小黑麦对生长猪配合饲料的影响

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.02.002

K. Eneva, G. Yordanova, A. Apostolov, R. Nedeva

引用次数: 0

PLANNING THE JOINT TRAJECTORY OF REDUNDANT KINEMATICS CHAIN 规划冗余运动链的关节轨迹

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.03.011

K. Yankov

{"title":"PLANNING THE JOINT TRAJECTORY OF REDUNDANT KINEMATICS CHAIN","authors":"K. Yankov","doi":"10.15547/tjs.2022.03.011","DOIUrl":"https://doi.org/10.15547/tjs.2022.03.011","url":null,"abstract":"In a number of technological operations, the end-effector of an open kinematic chain must follow a spatial trajectory, and a necessary condition for the realization of the movement is the smooth change of the generalized coordinates. An analogous problem exists in the development of drugs when a molecular configuration requiring minimal energy for its realization must be provided. A task of this nature must be solved in order to find the missing segments of a partially known protein structure. These problems lead to the more general task of ensuring a smooth change of the joint coordinates of the kinematic chain while performing a continuous spatial movement of the end-effector of the chain. An algorithm for planning a smooth reconfiguration of a redundant kinematics chain is proposed in the present work. The chain is decomposed into a countable number of substructures, each of which provides a unique solution of inverse kinematics for a target point. This makes it possible to select substructures during the spatial movement of the kinematic chain, ensuring a smooth change of the joint coordinates. The redundant generalized coordinates are force controlled, given the necessary values to ensure a smooth reconfiguration. The inverse kinematics problem is solved for the other joints.","PeriodicalId":30048,"journal":{"name":"Trakia Journal of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67463950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DIAGNOSTIC PROCEDURE FOR DETECTION OF HPAI H5N8-BULGARIAN EXPERIENCE DURING THE EPIZOOTIC WAVE IN 2016/2017 2016/2017年动物流行病期间保加利亚hpai h5n8检测诊断程序的经验

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.02.007

G. Goujgoulova, G. Stoimenov

{"title":"DIAGNOSTIC PROCEDURE FOR DETECTION OF HPAI H5N8-BULGARIAN EXPERIENCE DURING THE EPIZOOTIC WAVE IN 2016/2017","authors":"G. Goujgoulova, G. Stoimenov","doi":"10.15547/tjs.2022.02.007","DOIUrl":"https://doi.org/10.15547/tjs.2022.02.007","url":null,"abstract":"In the 4 months spanning the 2016/2017 winter (October – January), HPAI H5N8 was the predominant serotype throughout European countries. Bulgaria, an important geographical location for migratory birds crossing Europe through the two major migratory flyways for Africa, was heavily affected with HPAI H5N8 outbreaks. The first detection of HPAI virus serotype H5N8 in Bulgaria was on the 19th of December 2016 in the Vidin region. Subsequently many outbreaks in wild birds and domestic poultry were reported in 15 different administrative regions. By the end of January 2017, the HPAI H5N8 strain was detected in domestic poultry, game birds, wild waterfowl, and zoo birds. The observed and reported symptoms were discoordination, laboured breathing, ataxia, opisthotonos, watery diarrhoea, sudden death, high mortality, weakness, and recumbency. In wild birds data for high mortality was only available for some species, with well-defined hyperaemia of the meninges and brain congestion with a singular haemorrhage being mainly observed, particularly in Dalmatian pelicans. These observations showcase the importance of rapid and accurate detection and subtyping of these HPAI viruses by research laboratories. To tackle this issue, the National Reference laboratory for Influenza A and Newcastle disease in Sofia adapted a modified real-time RT-PCR assay for detection of the N8 subtype in domestic and wild birds. The aim of this study is to present a Bulgarian experience in diagnosis of HPAI H5N8 subtype during 2016/2017 epizootic wave.","PeriodicalId":30048,"journal":{"name":"Trakia Journal of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67463093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PREVALENCE AND CONTROL OF MYOPIA AMONG CHILDREN IN PLEVEN, BULGARIA 保加利亚普列文儿童近视的流行和控制

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.02.011

K. Valcheva, V. Ivancheva

{"title":"PREVALENCE AND CONTROL OF MYOPIA AMONG CHILDREN IN PLEVEN, BULGARIA","authors":"K. Valcheva, V. Ivancheva","doi":"10.15547/tjs.2022.02.011","DOIUrl":"https://doi.org/10.15547/tjs.2022.02.011","url":null,"abstract":"Purpose: To observe the factors affecting the prevalence and control of myopia among children in Pleven, Bulgaria. Methods: A retrospective study was done. From March 2019 to March 2021, 404 consecutive patients from 3 to 18 years old with the main diagnosis myopia after cycloplegia passed through the private ophthalmology practice. The following signs were analyzed: age, sex, location, type and degree of myopia, review result and accompanying diseases. Results: The demographic profile of the evaluated children was: 43.8% males and 56.2% females (р< 0.05); most of them are living in the city (89.2%). The most significant number of children with myopia were between 9 and 12 years old. Children with new onset myopia were 27.7% and 72.3% were with existing one. Patients between 8 and 18 years of age with existing myopia are more than those with new onset one (p <0.05). There were 76.7% children with a low degree of myopia, 17.6% with a medium degree and 2.0% with a high degree. Without accompanying diseases were 65.6% of our patients. Conclusion: The control and treatment of myopia seem promising. However, it is necessary to develop a state policy for the prevention of children's eye health in Bulgaria.","PeriodicalId":30048,"journal":{"name":"Trakia Journal of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67463568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CORRELATION OF THE BALL SPEED AND RELATIVE STRENGTH POTENTIAL AND EXPLOSIVE POWER OF THE LOWER LIMBS OF IN-STEP KICK OF ELITE FOOTBALL PLAYERS 优秀足球运动员正步踢的速度与下肢相对力量潜力和爆发力的相关性研究

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.03.008

M. Gadev, P. Peev

{"title":"CORRELATION OF THE BALL SPEED AND RELATIVE STRENGTH POTENTIAL AND EXPLOSIVE POWER OF THE LOWER LIMBS OF IN-STEP KICK OF ELITE FOOTBALL PLAYERS","authors":"M. Gadev, P. Peev","doi":"10.15547/tjs.2022.03.008","DOIUrl":"https://doi.org/10.15547/tjs.2022.03.008","url":null,"abstract":"The purpose of this study was to reveal the significance of the strength component of major muscle groups and explosive power of lower limbs of elite football players in relation to ball speed upon execution of in-step kick. Methods The research was done among 42 football players aged between 18 and 19 years. The following methods were used: speed metric, tensometry, and dynamometry. The data were processed with math-statistical methods (descriptive statistics and correlation analyses). Results The structural interdependencies between different indicators influencing ball speed were revealed. The data analysis established a strong direct ratio correlation dependence between ball speed and the relative strength of hip muscles of left and right legs (r=0,703 and r=0,720 respectively). We found that the strength component affecting ball speed was more significantly influenced by the relative strength of the muscles of the hip flexors and less influenced by those of the hip extensors. There was a strong interdependence with speed-strength abilities which are related to the magnitude of the power. Conclusions All in all, we believe that the revealed specifics and guidelines for strength and explosive power influence in conditional training sessions will help increase ball speed upon execution of in-step kick.","PeriodicalId":30048,"journal":{"name":"Trakia Journal of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67463909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANTIOXIDANTLY-MODULATIVE, CHEMOPREVENTIVE AND ANTI-SARS-COVID 19 ACTION OF MEDICINAL PLANTS 药用植物的抗氧化调节、化学预防和抗sars - covid作用

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.04.001

Y. Karamalakova, E. Georgieva, V. Ivanov, K. Parlapanska, G. Nikolova

引用次数: 0

STUDY OF COMPLIANCE WITH THE RULES FOR PREVENTION OF INFECTIONS RELATED TO DENTAL CARE AMONG DENTAL STUDENTS DURING A PANDEMIC OF SARS-2-COV / COVID-19 sars -2冠状病毒/ COVID-19大流行期间牙科学生遵守牙科保健相关感染预防规则的情况研究

Trakia Journal of Sciences Pub Date : 2022-01-01 DOI: 10.15547/tjs.2022.01.008

V. Stoeva, T. Bozhkova, A. Atanasovski, V. Kondeva

引用次数: 1