نتایج جستجو برای: miniature source
تعداد نتایج: 428591 فیلتر نتایج به سال:
A low energy fast miniature plasma focus device ‘FMPF-1’ has recently been developed to be used as compact and portable nanosecond pulsed neutron source for field applications. The system operates in deuterium producing maximum neutron yield in the order of 10 neutrons/ pulse in 4� sr. at ~80kA peak discharge current. In the range of 4 to 7mbar distinct and sharp dip in the current derivative s...
Pottery art in Iran reached its apex during the Seljuk and Kharazmshahi eras. In these two periods, artists produced high-quality wares,with Minai decorations which were considered as masterpieces of Islamic art from an aesthetical point of view. These wares were decorated with motifs existing in manuscripts illustrated by artists from Baghdad and Seljuk miniature painting schools portraying ep...
Due to the plurality of the rulers’ religions, many of the religious miniatures in the hand-written copies at the beginning of the Ilkhanate period contained subjects relating to the prophets and different religions. In the second half of the Ilkhanate period, a new wave of Shi’ism appeared among the rulers that matched with their political and governmental intentions and thoughts. The question...
Background: Ketamine is a commonly used intravenous anesthetic which produces dissociation anesthesia, analgesia, and amnesia. The mechanism of ketamine-induced synaptic inhibition in high-level cortical areas is still unknown. We aimed to elucidate the effects of different concentrations of ketamine on the glutamatergic synaptic transmission of the neurons in the primary somatosensory cortex b...
A miniature, directional fibre-optic acoustic source is presented that employs geometrical focussing to generate a nearly-collimated acoustic pencil beam. When paired with a fibre-optic acoustic detector, an all-optical ultrasound probe with an outer diameter of 2.5 mm is obtained that acquires a pulse-echo image line at each probe position without the need for image reconstruction. B-mode imag...
In early stages of various pulmonary diseases, such as emphysema and fibrosis, the change in X-ray attenuation is not detectable with absorption-based radiography. To monitor the morphological changes that the alveoli network undergoes in the progression of these diseases, we propose using the dark-field signal, which is related to small-angle scattering in the sample. Combined with the absorpt...
human dental pulp inflammation can progress to periapical lesion formation and conventional root canal treatment (rct) has been the traditional method for disease management. this observational study presents two cases of vital pulp therapy in mature molars diagnosed with irreversible pulpitis and associated with apical periodontitis. in these two clinical cases, the involved teeth had deep car...
Epidermal melanocytes in mammals are known to occur in a variety of shapes, sizes, and colors. The basic melanocyte morphology is dependent upon genetics, but there are a number of environmental factors that can cause modification. In the epidermis of PET/\vrnr mice, the population of rnelanocytes reaches a peak and begins to decline during the first post-natal week, and has disappeared within ...
Learning to produce sentences involves learning patterns that enable the generation of new utterances. Language contains both verb-specific and verb-general regularities that are relevant to this capacity. Previous research has focused on whether one source is more important than the other. We tested whether the production system can flexibly learn to use either source, depending on the predict...
Miniature coils for magnetic resonance imaging and spectroscopy are demonstrated. A rectangular Helmholtz arrangement based on a pair of substrates separated by spherical alignment spacers is investigated. An optimal geometry is developed using simple theory and verified by numerical analysis. Prototypes are fabricated using silicon substrates shaped by anisotropic etching to form a trough to h...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید