41 research outputs found

    Relating the proton, neutron and deuteron structure functions in the covariant Bethe-Salpeter formalism

    Get PDF
    The neutron structure function F2n(x) is evaluated within the kinematic range 10**(-3)<x<1 from the deuteron and proton data by employing relativistic theoretical description of F2D(x) and several assumptions on the hihg-x asymptotics of F2n(x)/F2p(x). It is shown that new measurements of F2D(x) in the range 0.6<x<0.8 would substantially improve understanding of the relation between d and u valence quarks in the limit x -> 1.Comment: Revised on January 20, 2004: Modified Figs. 2 and 3 and the reference lis

    Π€ΠΎΡ€ΠΌΠ° Π»ΠΎΡ…Π°Π½ΠΊΠΈ ΠΏΠΎΡ‡ΠΊΠΈ Ρƒ ΠΏΠ»ΠΎΠ΄Π° ΠΏΡ€ΠΈ Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π΅ III стСпСни ΠΊΠ°ΠΊ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΌΠ΅ΡˆΠ°Ρ‚Π΅Π»ΡŒΡΡ‚Π²Π° Π² ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠΌ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅

    No full text
    BACKGROUND: Fetal hydronephrosis is one of the most common malformations of the urinary system. The main goal of prenatal diagnostics is to identify a risk group with a dilatation of the renal collecting system due to mechanical obstruction of the pelvic-ureteral segment. AIM: The aim of the study is to definition of a prenatal risk group with a high probability of early surgical intervention in the postnatal period based on an assessment of the predictor properties of the pelvis shape in hydronephrosis grade III. MATERIALS AND METHODS: A prospective analysis of the results of prenatal ultrasound examination of 77 fetuses (82 renal units) with grade III hydronephrosis (SFU classification) was carried out. The anteroposterior diameter of the pelvis was measured in millimeters at the level of the kidney gate. With the ellipsoid shape of the pelvis, the compression ratio of the ellipse was calculated as the ratio of the small semi-axis of the ellipse to its large semi-axis. All parameters were recorded in the third trimester of pregnancy. The study included cases of hydronephrosis with parenchymal thickness not differing by more than two sigma deviations from the standard value. The first ultrasound examination in the postnatal period was performed during the first month of life and then at 3, 6 and 12 months. RESULTS: Prenatally, 57 kidneys had an elliptical pelvis and 25 funnel-shaped. The anteroposterior diameter of ellipsoid (16.5 [13; 20]) and funnel-shaped pelvis (15.0 [13; 17.8]) did not differ statistically significantly (p = 0.39). 36 (43.9%) patients were operated on, 29 of them were operated at the age of 13 months, due to the increase in APD from 17.56.0 to 27.98.2 (p = 0.001) and the transition of hydronephrosis to the IV degree by 1 month of life. The remaining 7 children had gradual progression of hydronephrosis and were operated at the age of 12 months and older. In 56.1%, resolution, regression or stabilization of hydronephrosis were noted during dynamic observation lasting 1 year. With a single-variant analysis, it was found that the configuration of the pelvis and the compression ratio of the ellipse statistically significantly correctly predicted the progression of hydronephrosis and the probability of surgery at 69.5% and 80.5%, respectively. At the same time, the compression ratio had a higher sensitivity and specificity. CONCLUSIONS: Fetal hydronephrosis with a funnel-shaped configuration of the pelvis, has a functional nature and regresses after birth during the first year of life. The antenatal ellipsoid configuration of the pelvis, approaching the circumference, is a statistically significant predictor of surgical intervention due to the progression of hydronephrosis due to external causes of obstruction.ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. Π€Π΅Ρ‚Π°Π»ΡŒΠ½Ρ‹ΠΉ Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ· ΠΎΠ΄ΠΈΠ½ ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ распространСнных ΠΏΠΎΡ€ΠΎΠΊΠΎΠ² развития ΠΌΠΎΡ‡Π΅Π²ΠΎΠΉ систСмы. Основная Π·Π°Π΄Π°Ρ‡Π° ΠΏΡ€Π΅Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠΉ диагностики состоит Π² ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ Π³Ρ€ΡƒΠΏΠΏΡ‹ риска с Ρ€Π°ΡΡˆΠΈΡ€Π΅Π½ΠΈΠ΅ΠΌ ΡΠΎΠ±ΠΈΡ€Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠΉ систСмы ΠΏΠΎΡ‡ΠΊΠΈ вслСдствиС мСханичСской обструкции Π»ΠΎΡ…Π°Π½ΠΎΡ‡Π½ΠΎ-ΠΌΠΎΡ‡Π΅Ρ‚ΠΎΡ‡Π½ΠΈΠΊΠΎΠ²ΠΎΠ³ΠΎ сСгмСнта. ЦСль ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΡ€Π΅Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹ риска с высокой Π²Π΅Ρ€ΠΎΡΡ‚Π½ΠΎΡΡ‚ΡŒΡŽ Ρ€Π°Π½Π½Π΅Π³ΠΎ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΌΠ΅ΡˆΠ°Ρ‚Π΅Π»ΡŒΡΡ‚Π²Π° Π² ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠΌ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅ Π½Π° основС ΠΎΡ†Π΅Π½ΠΊΠΈ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€Π½Ρ‹Ρ… свойств Ρ„ΠΎΡ€ΠΌΡ‹ Π»ΠΎΡ…Π°Π½ΠΊΠΈ ΠΏΡ€ΠΈ Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π΅ III стСпСни. ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ проспСктивный Π°Π½Π°Π»ΠΈΠ· Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² ΠΏΡ€Π΅Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΡƒΠ»ΡŒΡ‚Ρ€Π°Π·Π²ΡƒΠΊΠΎΠ²ΠΎΠ³ΠΎ исслСдования 77 ΠΏΠ»ΠΎΠ΄ΠΎΠ² (82 ΠΏΠΎΡ‡Π΅Ρ‡Π½Ρ‹Ρ… Π΅Π΄ΠΈΠ½ΠΈΡ†Ρ‹) с Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·ΠΎΠΌ III стСпСни (классификация SFU). ΠŸΠ΅Ρ€Π΅Π΄Π½Π΅Π·Π°Π΄Π½ΠΈΠΉ Π΄ΠΈΠ°ΠΌΠ΅Ρ‚Ρ€ Π»ΠΎΡ…Π°Π½ΠΊΠΈ измСрялся Π² ΠΌΠΈΠ»Π»ΠΈΠΌΠ΅Ρ‚Ρ€Π°Ρ… Π½Π° ΡƒΡ€ΠΎΠ²Π½Π΅ Π²ΠΎΡ€ΠΎΡ‚ ΠΏΠΎΡ‡ΠΊΠΈ. ΠŸΡ€ΠΈ эллипсовидной Ρ„ΠΎΡ€ΠΌΠ΅ Π»ΠΎΡ…Π°Π½ΠΊΠΈ вычислялся коэффициСнт сТатия эллипса, ΠΊΠ°ΠΊ ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠ΅ ΠΌΠ°Π»ΠΎΠΉ полуоси эллипса ΠΊ Π΅Π³ΠΎ большой полуоси. ВсС ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ Ρ€Π΅Π³ΠΈΡΡ‚Ρ€ΠΈΡ€ΠΎΠ²Π°Π»ΠΈΡΡŒ Π² Ρ‚Ρ€Π΅Ρ‚ΡŒΠ΅ΠΌ тримСстрС бСрСмСнности. Π’ исслСдованиС Π²ΠΊΠ»ΡŽΡ‡Π°Π»ΠΈΡΡŒ случаи Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° с Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½ΠΎΠΉ ΠΏΠ°Ρ€Π΅Π½Ρ…ΠΈΠΌΡ‹, Π½Π΅ ΠΎΡ‚Π»ΠΈΡ‡Π°ΡŽΡ‰Π΅ΠΉΡΡ Π±ΠΎΠ»Π΅Π΅ Ρ‡Π΅ΠΌ Π½Π° Π΄Π²Π° ΡΠΈΠ³ΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… отклонСния ΠΎΡ‚ Π½ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ значСния. ΠŸΠ΅Ρ€Π²ΠΎΠ΅ ΡƒΠ»ΡŒΡ‚Ρ€Π°Π·Π²ΡƒΠΊΠΎΠ²ΠΎΠ΅ исслСдованиС Π² ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎΠΌ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅ Π²Ρ‹ΠΏΠΎΠ»Π½ΡΠ»ΠΎΡΡŒ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠΈ ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ мСсяца ΠΆΠΈΠ·Π½ΠΈ ΠΈ Π΄Π°Π»Π΅Π΅ Π² 3, 6 ΠΈ 12 мСс. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠŸΡ€Π΅Π½Π°Ρ‚Π°Π»ΡŒΠ½ΠΎ 57 ΠΏΠΎΡ‡Π΅ΠΊ ΠΈΠΌΠ΅Π»ΠΈ ΡΠ»Π»ΠΈΠΏΡΠΎΠ²ΠΈΠ΄Π½ΡƒΡŽ Π»ΠΎΡ…Π°Π½ΠΊΡƒ, ΠΈ 25 Π²ΠΎΡ€ΠΎΠ½ΠΊΠΎΠΎΠ±Ρ€Π°Π·Π½ΡƒΡŽ Ρ„ΠΎΡ€ΠΌΡƒ. ΠŸΠ΅Ρ€Π΅Π΄Π½Π΅Π·Π°Π΄Π½ΠΈΠΉ Π΄ΠΈΠ°ΠΌΠ΅Ρ‚Ρ€ эллипсовидных (16,5 [13; 20]) ΠΈ Π²ΠΎΡ€ΠΎΠ½ΠΊΠΎΠΎΠ±Ρ€Π°Π·Π½Ρ‹Ρ… Π»ΠΎΡ…Π°Π½ΠΎΠΊ (15,0 [13; 17,8]) статистичСски Π·Π½Π°Ρ‡ΠΈΠΌΠΎ Π½Π΅ различался (p = 0,39). ΠžΠΏΠ΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π½ΠΎ 36 (43,9 %) ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ², ΠΈΠ· Π½ΠΈΡ… 29 Π±Ρ‹Π»ΠΈ Π² возрастС 13 мСс., Π² связи с нарастаниСм ΠΏΠ΅Ρ€Π΅Π΄Π½Π΅Π·Π°Π΄Π½Π΅Π³ΠΎ Π΄ΠΈΠ°ΠΌΠ΅Ρ‚Ρ€Π° с 17,5 6,0 Π΄ΠΎ 27,9 8,2 (Ρ€ 0,001) ΠΈ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄ΠΎΠΌ Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° Π² IV ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒ ΡƒΠΆΠ΅ ΠΊ 1-ΠΌΡƒ мСсяцу ΠΆΠΈΠ·Π½ΠΈ. ΠžΡΡ‚Π°Π»ΡŒΠ½Ρ‹Π΅ 7 Π΄Π΅Ρ‚Π΅ΠΉ ΠΈΠΌΠ΅Π»ΠΈ постСпСнноС прогрСссированиС Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° ΠΈ Π±Ρ‹Π»ΠΈ ΠΎΠΏΠ΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ Π² возрастС 12 мСс. ΠΈ ΡΡ‚Π°Ρ€ΡˆΠ΅. Π’ 56,1 % ΠΎΡ‚ΠΌΠ΅Ρ‡Π΅Π½Ρ‹ Ρ€Π°Π·Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅, рСгрСссия ΠΈΠ»ΠΈ стабилизация Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° Π² процСссС динамичСского наблюдСния ΠΏΡ€ΠΎΠ΄ΠΎΠ»ΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ 1 Π³ΠΎΠ΄. ΠŸΡ€ΠΈ ΠΎΠ΄Π½ΠΎΠ²Π°Ρ€ΠΈΠ°Π½Ρ‚Π½ΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π΅ ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΎ, Ρ‡Ρ‚ΠΎ конфигурация Π»ΠΎΡ…Π°Π½ΠΊΠΈ ΠΈ коэффициСнт сТатия статистичСски Π·Π½Π°Ρ‡ΠΈΠΌΠΎ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½ΠΎ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΠΎΠ²Π°Π»ΠΈ прогрСссированиС Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° ΠΈ Π²Π΅Ρ€ΠΎΡΡ‚Π½ΠΎΡΡ‚ΡŒ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ Π² 69,5 ΠΈ 80,5 % соотвСтствСнно. ΠŸΡ€ΠΈ этом коэффициСнт сТатия ΠΎΠ±Π»Π°Π΄Π°Π» Π±ΠΎΠ»Π΅Π΅ высокой Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ ΠΈ ΡΠΏΠ΅Ρ†ΠΈΡ„ΠΈΡ‡Π½ΠΎΡΡ‚ΡŒΡŽ. Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Π€Π΅Ρ‚Π°Π»ΡŒΠ½Ρ‹ΠΉ Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ· с Π²ΠΎΡ€ΠΎΠ½ΠΊΠΎΠΎΠ±Ρ€Π°Π·Π½ΠΎΠΉ ΠΊΠΎΠ½Ρ„ΠΈΠ³ΡƒΡ€Π°Ρ†ΠΈΠ΅ΠΉ Π»ΠΎΡ…Π°Π½ΠΊΠΈ, ΠΈΠΌΠ΅Π΅Ρ‚ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΡƒΡŽ ΠΏΡ€ΠΈΡ€ΠΎΠ΄Ρƒ ΠΈ рСгрСссируСт послС роТдСния Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ Π³ΠΎΠ΄Π° ΠΆΠΈΠ·Π½ΠΈ. ΠΠ½Ρ‚Π΅Π½Π°Ρ‚Π°Π»ΡŒΠ½Π°Ρ эллипсовидная конфигурация Π»ΠΎΡ…Π°Π½ΠΊΠΈ, ΠΏΡ€ΠΈΠ±Π»ΠΈΠΆΠ°ΡŽΡ‰Π°ΡΡΡ ΠΊ окруТности, являСтся статистичСски Π·Π½Π°Ρ‡ΠΈΠΌΡ‹ΠΌ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€ΠΎΠΌ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΌΠ΅ΡˆΠ°Ρ‚Π΅Π»ΡŒΡΡ‚Π²Π° Π² связи с прогрСссированиСм Π³ΠΈΠ΄Ρ€ΠΎΠ½Π΅Ρ„Ρ€ΠΎΠ·Π° вслСдствиС Π²Π½Π΅ΡˆΠ½ΠΈΡ… ΠΏΡ€ΠΈΡ‡ΠΈΠ½ обструкции

    Education and information technology: Blended learning and inquiry-based learning innovative solutions

    No full text
    The purpose of the article is to justify the use of information technologies in the innovative educational process of training future professionals. The article analyzes the current needs and trends in the field of professional training. The changes taking place in modern education are reflected. Particular attention is paid to the features of the use of information technologies in the educational process and the introduction of modern pedagogical technologies. Relevant innovative pedagogical technologies and their features are determined, in particular, blended learning and inquiry-based learning are considered in detail. The article presents the results of the study on the demand for the use of information technologies in the educational process. Β© 2020, Institute of Advanced Scientific Research, Inc.. All rights reserved
    corecore