56 research outputs found
Peculiarities of Lambda hyperon and Pi meson production in nucleus-nucleus collisions at high energies
Lambda hyperons produced in central nucleus-nucleus interactions at 4.5 GeV/c momentum per incident nucleon
Transverse momenta and rapidities of Lambda 's produced in central nucleus-nucleus collisions at 4.5 GeV/c·u (C-C,...,O-Pb) were studied and compared with those from inelastic He-Li interactions at the same incident momentum. Polarization of the Lambda hyperons was found to be consistent with zero ( alpha P=-0.06=0.11 for Lambda 's from central collisions). An upper limit of the Lambda -bar / Lambda production ratio was estimated to be less than 4.5 x 10-3. The experiment was performed in a triggered streamer chamber
Importance of Auditory Brainstem Response for Detection of Hearing Impairment in Early Childhood
Цел: Целта на настоящата презентация е да докаже ролята на слуховите стволови евокирани потенциали (ССЕП) в ранната диагностика на слуховите увреди при деца.Материали и методи: Изследвани са над 120 деца със слухови нарушения на възраст между 6 месеца и 5 години. Използвани са следните аудиометрични изследвания: тонална прагова аудиометрия, тимпанометрия, рефлексометрия, ССЕП.Резултати: Резултатите от ССЕП категорично доказват значимостта на изследването за диагностициране на слуховото състояние – има ли нарушение или не в слуховото възприятие при деца в ранна детска възраст.Изводи: Правим изводи, че ССЕП са единствен, обективен и надежден метод за диагностика на слуховите увреди в ранна детска възраст.-----------------------------------------------Aim: The aim of the present study is to prove the importance of Auditory brainstem response (ABR) in early diagnosis of hearing impairment in children. More than 120 kids from 6 months to 5 year old were tested in a period of 5 years.Material and methods: During the period of the study the following methods were used: Tonal audiometry, tymponometry, reflexometry and Auditory brainstem response.Results: The results clearly show the importance of the testing for evaluation of the hearing condition – is there an impairment present or not in sound perception in early childhood.Conclusion: We conclude that ABR a sole and objective method for diagnosing hearing impairment in early childhood
Methods of processing and analysis of v0 events registered in the 2-meter propane bubble chamber
Study of the polarization for LAMBDA-hyperons produced in C-C and C-Ta interactions at 4.2 GeV/c per nucleon
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