ahmedbadr

Ahmed Badr Osman

Lecturer - Lecturer of Animal Physiology

Faculty of science

Address: Sohag, Egypt

40

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Welcome in © My web site

My name is Ahmed Badr Osman and working as a lecturer of Animal Physiology at Zoology Department, Faculty of Science, Sohag University.

Areas of specialization: Cardiac ion channels/currents, Cardiac arrhythmia, Fish heart, Electrophysiology, Temperature acclimation and adaptation, Cardiac contraction, Ecophysiology. Empirical and experimental research using mainly ectotherms, in particular fishes.

I learned a lot of techniques in Finland during my PhD as patch-clamb (whole sell and single ion channel), action potential and electrocardiograph (ECG). Also, attending the summer school in Russia where i learned more about electrophysiolgy techniques as cadiac contraction force, respiration rate and calcium imaging with great cooperation with different nationalities in Finland, Russia, England, Spain, Denmark and Canada.

Previously I taught a lot of practical courses in different fields of Zoology for undergraduate and postgraduate students. Recently, I am teaching some lectures in Zoology Department, Faculty of Science, Sohag University for undergraduate students as Animal Physiology, Cytology, Histology, Taxonomy, besides supervision on some scientific researches of 4th grade students (graduation research).

You can know more by downloading my CV.

 

Thanks for your visiting

Best Regards,

Ahmed

بنك المعرفة المصرى

2018-10-23 10:21:04
بنك المعرفة المصرى
ستعقد غدا باذن الله ورشة عمل للتعريف بنشاطات بنك المعرفة المصرى فى قاعدة السيمنار بكلية العلوم فى تمام الساعة 10 صباحا (24-10-2018). للمزيد من المعلومات http://www.sohag-univ.edu.eg/%D8%A7%D9%84%D9%8A%D9%88%D9%85-%D9%86%D8%AF%D9%88%D8%A9-%D8%AA%D8%B9%D8%B1%D9%8A%D9%81%D9%8A%D8%A9-%D8%A8%D8%AE%D8%AF%D9%85%D8%A7%D8%AA-%D8%A8%D9%86%D9%83-%D8%A7%D9%84%D9%85%D8%B9%D8%B1%D9%81/ Read more

تربية اساسى ادبى

2018-10-23 10:14:27
تربية اساسى ادبى
اعزائى طلاب الفرقة الاولى كلية التربية شعبة اساسى علمى سنتكلم المحاضرة القادمة باذن الله عن الجهاز التنفسى والجهاز الدورى مع فتح باب الاستفسارات فى بداية المحاضرة عن المحاضرة السابقة. Read more

تربية اساسى علمى

2018-10-23 10:10:58
تربية اساسى علمى
اعزائى طلاب الفرقة الاولى كلية التربية شعبة اساسى علمى سنتكلم المحاضرة القادمة باذن الله عن الجهاز التنفسى والجهاز الدورى مع فتح باب الاستفسارات فى بداية المحاضرة عن المحاضرة السابقة. Read more

المحاضرة الاولى - كلية الزراعة

2018-10-21 21:23:37
المحاضرة الاولى - كلية الزراعة
اعزائى طلاب الفرقة الاولى كلية الزراعة تم تحميل المحاضرة الاولى على الموقع يمكنك ان تحملها من تبويب SUPPLEMENTS وكذلك اسئلة لقياس مدى فهمك واستيعابك للمحاضرة فى تبويت ال TASKS.اعزائى طلاب الفرقة الاولى كلية الزراعة تم تحميل المحاضرة الاولى على الموقع يمكنك ان تحملها من تبويب SUPPLEMENTS وكذلك اسئلة لقياس مدى فهمك واستيعابك للمحاضرة فى تبويت ال TASKS.اعزائى طلاب الفرقة الاولى ... Read more

الفرقة الاولى كلية الزراعة

2018-10-20 22:35:39
الفرقة الاولى كلية الزراعة
سنتكلم المحاضرة القادمة باذن الله عن الانقسامات الخلوية ومقدمة فى علم الانسجة مع فتح باب الاستفسارات عن المحاضرة السابقة فى بداية المحاضرة. Read more

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Effects of seasonal acclimatization on thermal tolerance of inward currents in roach (Rutilus rutilus) cardiac myocytes

2018-10-13 23:55:42 | Keywords Heat tolerance, Cardiac excitability, Ion channels, Global warming, Thermal acclimatization, Fish heart,
Effects of seasonal acclimatization on thermal tolerance of inward currents in roach (Rutilus rutilus) cardiac myocytes
To test the hypothesis of temperature-dependent deterioration of electrical excitability (TDEE) (Vornanen, J Exp Biol 219:1941–1952, 2016), the role of sodium (_I_ Na) and calcium (_I_ Ca) currents in heat tolerance of cardiac excitability was examined in a eurythermic fish, the roach (_Rutilus rutilus_). Densities of cardiac _I_ Ca and _I_ Na and their acute heat tolerance were measured in ... Read more

Electrical excitability of roach (Rutilus rutilus) ventricular myocytes: effects of extracellular K+, temperature, and pacing frequency

2018-10-14 00:06:22 | Keywords cardiac action potential, excitation threshold, exercise, catch-and-release fishing, Fish heart,
Electrical excitability of roach (Rutilus rutilus) ventricular myocytes: effects of extracellular K+, temperature, and pacing frequency
Exercise, capture, and handling stress in fish can elevate extracellular K+ concentration ([K+]o) with potential impact on heart function in a temperature- and frequency-dependent manner. To this end, the effects of [K+]o on the excitability of ventricular myocytes of winter-acclimatized roach (_Rutilus rutilus_) (4 ± 0.5°C) were examined at different test temperatures and varying pacing rates. Frequencies corresponding to in ... Read more

THERMAL TOLERANCE OF ELECTRICAL EXCITATION OF THE ROACH (RUTILUS RUTILUS) HEART

2018-10-14 00:18:22 | Keywords arrhythmia, electrical activity, ion transport, cardiovascular system, seasonal variation, environmental temperature, acclimatization, Rutilus rutilus,
THERMAL TOLERANCE OF ELECTRICAL EXCITATION OF THE ROACH (RUTILUS RUTILUS) HEART
Temperature, the abiotic master environmental factor, has a profound effect on the abundance and distribution of animals on the earth, in particular ecotherms. Ectothermic animals (fishes, frogs, reptiles, and invertebrate animals), cannot physiologically regulate their body temperature, and are therefore especially vulnerable to temperature changes to which they are not adapted but to which they might be exposed on the ... Read more

Effects of seasonal acclimatization on action potentials and sarcolemmal K+ currents in roach (Rutilus rutilus) cardiac myocytes

2018-10-13 23:42:59 | Keywords Thermal acclimatization, Fish heart, Electrical excitability, Temperature tolerance, Climate warming,
Effects of seasonal acclimatization on action potentials and sarcolemmal K+ currents in roach (Rutilus rutilus) cardiac myocytes
Temperature sensitivity of electrical excitability is a potential limiting factor for high temperature tolerance of ectotherms. The present study examines whether heat resistance of electrical excitability of cardiac myocytes is modified by seasonal thermal acclimatization in roach (_Rutilus rutilus_), a eurythermal teleost species. To this end, temperature dependencies of ventricular action potentials (APs), and atrial and ventricular K+ currents were ... Read more

Effects of seasonal acclimatization on temperature-dependence of cardiac excitability in the roach, Rutilus rutilus

2018-10-13 23:35:09 | Keywords Eurythermal fish, Cardiac arrhythmias, Electrocardiogram, Action potential,
Effects of seasonal acclimatization on temperature-dependence of cardiac excitability in the roach, Rutilus rutilus
Temperature-sensitivity of electrical excitability is a potential limiting factor for performance level and thermal tolerance of excitable tissues in ectothermic animals. In order to test whether rate and rhythm of the heart acclimatize to seasonal temperature changes, thermal sensitivity of cardiac excitation in a eurythermal teleost, the roach (_Rutilus rutilus_), was examined. Excitability of the heart was determined from _in ... Read more

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