139 research outputs found
Experimental study of timers implemented in bipolar and cmos technologies
Π Π΄Π°Π½Π½ΠΎΠΉ ΡΡΠ°ΡΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΡΡΡΡΡ ΠΌΠΈΠΊΡΠΎΡΡ
Π΅ΠΌΡ ΡΠ°ΠΉΠΌΠ΅ΡΠΎΠ², Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΡ
ΠΏΠΎ Π±ΠΈΠΏΠΎΠ»ΡΡΠ½ΠΎΠΉ ΠΈ ΠΠΠΠ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠΌ. ΠΡΠΈΠ²ΠΎΠ΄ΡΡΡΡ ΡΠ°ΡΡΠ΅ΡΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΡ ΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°. ΠΠ΅Π»Π°Π΅ΡΡΡ Π²ΡΠ²ΠΎΠ΄ ΠΎ ΡΠΎΠΌ, ΠΊΠ°ΠΊΠΎΠΉ ΠΈΠ· Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡΠΎΠ², Π² ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΡΠΎΡΡΡ
Π»Π΅ΠΆΠ°Ρ ΡΠ°ΠΉΠΌΠ΅ΡΡ, Π±ΠΎΠ»Π΅Π΅ Π΄ΠΎΠ»Π³ΠΎΠ²Π΅ΡΠ΅Π½ ΠΈ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅Π½ Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΠΊ ΠΏΠΎΡΡΠ΅Π±Π»Π΅Π½ΠΈΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ½Π΅ΡΠ³ΠΈΠΈ.In this article, we study the timer ICs implemented in bipolar and CMOS technologies. Calculations of the circuit components are given, as well as practical implementation and experimental results. We determine which of the timers based generators is better with respect to energy consumption
ΠΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΠ΅ Π‘ΠΠ£ Β«Π§ΠΈΡΡΠΈΠΊΠ°Π²ΡΠΎΠ΄ΠΎΡΒ»
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠ°ΡΡΡ Π‘ΠΠ£ "Π§ΠΈΡΡΠΈΠΊΠ°Π²ΡΠΎΠ΄ΠΎΡ". Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΡ
Π΅ΠΌΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΡ ΠΏΡΠ΅Π΄ΠΏΡΠΈΡΡΠΈΡ, Π²ΡΠ±ΠΎΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ. Π ΡΠ°Π±ΠΎΡΠ΅ ΡΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½Π° ΡΡ
Π΅ΠΌΠ° ΡΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΡ ΠΎΡ ΠΏΠΎΠ΄ΡΡΠ°Π½ΡΠΈΠΈ ΡΠ½Π΅ΡΠ³ΠΎΡΠΈΡΡΠ΅ΠΌΡ, Π΄ΠΎ ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΡΠΈΠ΅ΠΌΠ½ΠΈΠΊΠ°. ΠΡΠ±ΡΠ°Π½Ρ ΠΊΠ°Π±Π΅Π»ΠΈ ΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄Π°, ΠΊΠΎΠΌΠΌΡΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ΅ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΠ΅, Π±ΡΠ»ΠΈ ΡΠ΄Π΅Π»Π°Π½Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠ΅ ΠΏΡΠΎΠ²Π΅ΡΠΊΠΈ.Object of a research is an electric part of SDU "Chirchikavtodor". The work purpose β projection of the scheme of power supply of the enterprise, the choice of an inventory. In work the scheme of power supply from substation of a power supply system, to the terminating electroreceiver is designed. Cables and wires, a switching inventory are chosen, necessary checks were made
Wiki-based Collaborative Learning Experience in a Foreign Language Blended Course
The article emphasizes the educational potential of wikis for learning foreign languages. It focuses on studentsβ collaboration based on integration of different types of activities within a highly motivating blended learning environment where learners can interact and share their ideas. The study aims to understand if wikis could enhance online collaboration and positively affect studentsβ attitudes to group work. It tries to explore the level of participation and contribution of students in wiki-based activities, as well as their attitude to this type of online collaboration
ΠΠ³ΡΠΎΠΊΠ»ΠΈΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΡΠ΅Π»ΡΡΠΊΠΎΡ ΠΎΠ·ΡΠΉΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° Π² ΠΠ°ΠΏΠ°Π΄Π½ΠΎΠΉ Π‘ΠΈΠ±ΠΈΡΠΈ
ΠΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅ΠΆΠΈΠΌΠΎΠ² ΡΠ°Π±ΠΎΡΡ Π΄Π²ΡΡ ΡΠ°Π·Π½ΠΎΠ³ΠΎ ΡΠ΅ΡΠΌΠΎΡΠΈΡΠΎΠ½Π° Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ ΠΈΠ·Π²Π»Π΅ΡΠ΅Π½ΠΈΡ Π³Π΅ΠΎΡΠ΅ΡΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ½Π΅ΡΠ³ΠΈΠΈ
Percutaneous treatment of thrombosed primary arteriovenous hemodialysis access fistulae.BackgroundWe reviewed the efficacy of percutaneous intervention in acute thrombotic occlusion of native arteriovenous (AV) fistulae for hemodialysis.MethodsEight-one percutaneous procedures were performed in 54 patients presenting with a clotted native dialysis fistula. There were 60 cases of a long-segment thrombosis of the fistula. In 20 cases, a small thrombus usually caused by an underlying severe stenosis was observed. A proximal arterial occlusion was seen in one case. Treatment depended on clot size and included balloon dilation (N = 20), mechanical thrombectomy with various devices (N = 58), as well as pharmacomechanical thrombolysis (N = 3).ResultsFull restoration of flow was established in 72 cases (88.9%). Early reobstruction within 14 days occurred in eight cases (11.1%). Primary patency rates after a 1-, 3-, 6-, and 12-month period were 74, 63, 52, and 27%, respectively. Overall fistula patency was 75% after 3 months, 65% after 6 months, 51% after 12 months, and 22% after 24 months.ConclusionsAcute thrombotic occlusion of native AV fistulae is a major complication of hemodialysis. The results of treatment are believed to be less successful than thrombosis treatment in synthetic grafts. Our results, however, indicate the efficacy of percutaneous treatment in native fistulae, and demonstrate comparable technical results and patency rates
ΠΠ°ΡΡΠ±Π΅ΠΆΠ½ΡΠΉ ΠΈ ΠΎΡΠ΅ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΉ ΠΎΠΏΡΡ Π΄ΠΎΠΏΡΡΡΠΈΠΌΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠΆΠ°ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΡΠΊΠ°
ΠΠΎΠΆΠ°ΡΡ Π²ΡΠ΅Π³Π΄Π° Π½Π°Π½ΠΎΡΡΡ ΡΡΠ΅ΡΠ±, ΠΈ ΡΠ°ΡΡΠΎ ΡΡΠΎΡ ΡΡΠ΅ΡΠ± Π½Π΅ Π²ΠΎΡΠΏΠΎΠ»Π½ΠΈΠΌ, ΠΏΠΎΡΠΎΠΌΡ ΡΡΠΎ ΡΠ½ΠΎΡΠΈΡ ΡΠ΅Π»ΠΎΠ²Π΅ΡΠ΅ΡΠΊΠΈΠ΅ ΠΆΠΈΠ·Π½ΠΈ. ΠΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΠ΅ΡΡΡΡΡ, ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΡΠΉ ΠΏΠΎΠΆΠ°ΡΠ½ΡΠΉ ΡΠΈΡΠΊ Π² Π ΠΎΡΡΠΈΠΈ ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎ ΠΏΡΠΈΠ½ΡΡΡ Π½Π° ΡΡΠΎΠ²Π½Π΅ Π½Π΅ Π½ΠΈΠΆΠ΅ 12β’10{-6}/ΡΠ΅Π». Π³ΠΎΠ΄. ΠΠ° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ°ΡΡΡΡΠΎΠ² Π²ΡΡΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π² ΠΏΠΎΡ
ΠΎΠΆΠΈΡ
ΠΏΠΎ ΠΊΠ»ΠΈΠΌΠ°ΡΡ Π½Π° Π ΠΎΡΡΠΈΡ ΡΠ°Π·Π²ΠΈΡΡΡ
ΡΡΡΠ°Π½Π°Ρ
ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΡΠΉ ΠΏΠΎΠΆΠ°ΡΠ½ΡΠΉ ΡΠΈΡΠΊ Π΄ΠΎΠΏΡΡΡΠΈΠΌ ΠΈ ΠΏΡΠΈΠ΅ΠΌΠ»Π΅ΠΌ Π½Π° ΡΡΠΎΠΌ ΡΡΠΎΠ²Π½Π΅.Fires always cause damage, and often this damage is not replenished, because it takesaway human lives. Analyzing various information resources, it is established that the individual fire risk inRussia should be taken at a level no lower than 12β’10{-6}/ person. year. Based on the calculations, it wasrevealed that in individual countries similar in climate to Russia, the individual fire risk is acceptable andacceptable at this level
Π Π°Π·Π²ΠΈΡΠΈΠ΅ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈ Π»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΡΡΠ»Π΅Π½ΠΈΡ, Π²Π½ΠΈΠΌΠ°ΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΈ ΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈΡ Π½Π°Π²ΡΠΊΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΌΠ½ΠΎΠ³ΠΎΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΠ΅Π»ΡΡΠΊΠΎΠΉ ΠΈΠ³ΡΡ "Π’Π°Π²Π»Π΅ΠΈ"
How reliable is MRI in diagnosing cartilaginous lesions in patients with first and recurrent lateral patellar dislocations?
<p>Abstract</p> <p>Background</p> <p>Lateral dislocation of the patella (LPD) leads to cartilaginous injuries, which have been reported to be associated with retropatellar complaints and the development of patellofemoral osteoarthritis. Therefore, the purpose of this study was to determine the reliability of MRI for cartilage diagnostics after a first and recurrent LPD.</p> <p>Methods</p> <p>After an average of 4.7 days following an acute LPD, 40 patients (21 with first LPDs and 19 with recurrent LPDs) underwent standardized 1.5 Tesla MRI (sagittal T1-TSE, coronal STIR-TSE, transversal fat-suppressed PD-TSE, sagittal fat-suppressed PD-TSE). MRI grading was compared to arthroscopic assessment of the cartilage.</p> <p>Results</p> <p>Sensitivities and positive predictive values for grade 3 and 4 lesions were markedly higher in the patient group with first LPDs compared to the group with recurrent LPDs. Similarly, intra- and inter-observer agreement yielded higher kappa values in patients with first LPDs compared to those with recurrent LPDs. All grade 4 lesions affecting the subchondral bone (osteochondral defects), such as a fissuring or erosion, were correctly assessed on MRI.</p> <p>Conclusions</p> <p>This study demonstrated a comparatively good diagnostic performance for MRI in the evaluation of first and recurrent LPDs, and we therefore recommend MRI for the cartilage assessment after a LPD.</p
ΠΠ΅ΡΠ΅Π²ΠΎΠ΄Ρ ΠΈ ΠΏΠ΅ΡΠ΅Π²ΠΎΠ΄ΡΠΈΠΊΠΈ: ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ ΠΏΠΎΠ΄Ρ ΠΎΠ΄Ρ ΠΊ ΠΏΠ΅ΡΠ΅Π²ΠΎΠ΄Ρ ΠΏΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈΠΉ Π. Π. Π§Π΅Ρ ΠΎΠ²Π° Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΈΠΉ ΡΠ·ΡΠΊ (Π² ΠΈΡΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠΌ Π°ΡΠΏΠ΅ΠΊΡΠ΅)
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