نتایج جستجو برای: action in rem

تعداد نتایج: 17037422  

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1989
M Steriade D Paré D Bouhassira M Deschênes G Oakson

Ponto-geniculo-occipital (PGO) waves are spiky field potentials generated in cholinergic nuclei of the dorsolateral mesopontine tegmentum just prior to and during rapid-eye-movement (REM) sleep and transferred toward thalamic nuclei. These events are commonly regarded as physiological correlates of oneiric behavior. We have examined the PGO-related discharges of physiologically identified neuro...

Journal: :Computer Communications 2021

Energy Efficiency (EE) is of high importance while considering Massive Multiple-Input Multiple-Output (M-MIMO) networks where base stations (BSs) are equipped with an antenna array composed up to hundreds elements. M-MIMO transmission, although highly spectrally efficient, results in energy consumption growing the number antennas. This paper investigates EE improvement through switching on/off ...

Around 75% of civilians have experienced at least one traumatic event in their lives, and this number is considerably higher in many parts of the world, as well as in military veterans and first responders. Of those exposed to trauma, 15-25% will develop Posttraumatic Stress Disorder (PTSD).  PTSD extracts enormous economic, health, and quality of life cost. Thus, it is critical to underst...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده مدیریت و اقتصاد 1391

abstract nowadays, industries cannot play a crucial role in national and international competitions. the tourism industry is no exception. tourism industry development as the most important economic sector and income generation is one of the key challenges of economic development in the world. therefore, countries were successful that take advantage of the capabilities of tourism sector using ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 0

محرومیت از خواب یک استراتژی بالقوه سودمند برای مطالعه عمل خواب می باشد. دستاوردهای متعدد نشان می دهند ک تولید ناهمزمانی الکتروانسفالوگرام (eeg) قشری، حاصل مشارکت گروههای متعدد نورونی است . تغییرات eeg قشری طی خواب rem و محرومیت از خواب rem ممکن است روی فعالیت آنزیمها و مکانیسمهای سنتز آنها اثر بگذارد. در سالهای اخیر اهمیت بیولوژیک ارتباط بین نیتریک اکسید (no) و فیزیولوژی خواب روشن شده است . دست...

Journal: :Brain research bulletin 1996
A Puigcerver E L van Luijtelaar W H Drinkenburg A L Coenen

The GABAB antagonist CGP 35348 was intraperitoneally given in doses of 100, 300, and 900 mg/kg to old rats. These rats were earlier chronically provided with EEG and EMG electrodes. Sleep recordings based on visual inspection of EEG and EMG recordings were made for 3 h post injection, and spontaneous behaviour in the recording cage was additionally observed. With 100 and 300 mg/kg, the drug pro...

Journal: :Animal behaviour 2015
Mark Tranmer Christopher Steven Marcum F Blake Morton Darren P Croft Selvino R de Kort

Social dynamics are of fundamental importance in animal societies. Studies on nonhuman animal social systems often aggregate social interaction event data into a single network within a particular time frame. Analysis of the resulting network can provide a useful insight into the overall extent of interaction. However, through aggregation, information is lost about the order in which interactio...

اسحاق بهشور فرزاد ایوانی, فرشید خیر الهی

مدیریت سود از طریق اقلام واقعی، یکی از پیامدهای مهم تضاد منافع بین سهامداران و مدیران می­باشد و یکی از مهمترین مواردی که مدیران باید در مورد آن به مالکان پاسخگو باشند، چگونگی به­کار گرفتن وجوه داخلی است که بر ارزشیابی سهامداران از نگهداشت وجه نقد، مؤثر می­باشد. هدف این مقاله، شناخت رابطه بین مدیریت سود واقعی و سطوح و ارزشیابی نگهداشت وجه نقد بوده است. در این مقاله برای اندازه‌گیری مدیریت سود از...

Journal: :Geophysical and Astrophysical Fluid Dynamics 2021

Dynamo action is considered in the region between two differentially rotating infinite discs. The boundaries may be insulating, perfectly conducting or ferromagnetic. In absence of a magnetic field, various well-known self-similar flows arise, generalising that von Kármán. Magnetic field instabilities with same similarity structure are sought. kinematic eigenvalue problem found to have growing ...

Journal: :Journal of neurophysiology 2009
Meijun Ye Abdallah Hayar Edgar Garcia-Rill

Parafascicular (Pf) neurons receive cholinergic input from the pedunculopontine nucleus (PPN), which is active during waking and REM sleep. There is a developmental decrease in REM sleep in humans between birth and puberty and 10-30 days in rat. Previous studies have established an increase in muscarinic and 5-HT1 serotonergic receptor-mediated inhibition and a transition from excitatory to inh...

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