نتایج جستجو برای: defect spectrum

تعداد نتایج: 316759  

1999
L. I. Deych A. Yamilov A. A. Lisyansky

– We consider tunneling of electromagnetic waves through a polariton band gap of a 1-D chain of atoms. We analytically demonstrate that a defect embedded in the structure gives rise to the resonance transmission at the frequency of a local polariton state associated with the defect. The optical properties of materials with band gaps in their electromagnetic spectrum have recently attracted a gr...

Journal: :بینا 0
محمودرضا پناهی بزاز m panahi bazaz اهواز- بیمارستان امام خمینی فریده شریفی پور f sharifipour اهواز- بیمارستان امام خمینی میترا زمانی m zamani اهواز- بیمارستان امام خمینی

purpose: to evaluate the diagnostic signs, intraoperative complications and postoperative outcomes in children with congenital cataract and pre-existing posterior capsule defect (ppcd). methods: this interventional case series was conducted on 14 eyes of 7 patients who underwent lensectomy-anterior vitrectomy for congenital cataract with ppcd. all children had bilateral cataract. preoperative d...

Journal: :Asymptotic Analysis 2022

We study the effect of additive noise to inversion FIOs associated a diffeomorphic canonical relation. use microlocal defect measures measure power spectrum in phase space and analyze how that is transformed under inversion. In general, white noise, for example, mapped depending on position direction. particular, we compute standard deviation, locally, added as function deviation data. As an Ra...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
najme anbiaee oral and maxillofacial radiologist, department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. saeede ebrahimi department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. hamed ebrahimnejad department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. maryam mohammadzade rezaie department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. zoha sahebnasagh department of oral and maxillofacial radiology, maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.

parotid stafne bone defect is a very rare and infrequent variant, which is located on the buccal or lingual surface of the mandibular ascending ramus. in this paper, a case of parotid stafne defect, which was incidentally discovered during dental radiographic examination, is reported. this bone defect was observed as a lucent oval-shaped defect on the lingual aspect of the right mandibular ramu...

2000
Justin R. David

The D0/D4 system with a Neveu-Schwarz B-field in the spatial directions of the D4-brane has a tachyon in the spectrum of the (0,4) strings. The tachyon signals the instability of the system to form a bound state of the D0-brane with the D4-brane. We use the Wess-Zumino-Witten like open superstring field theory formulated by Berkovits to study the tachyon potential for this system. The tachyon p...

Journal: :Heart 1998
R Kaulitz T Paul G Hausdorf

OBJECTIVE To report initial findings from a selected group of patients with morphological variations of the atrial septal defect who underwent transcatheter closure with a second generation redesigned double umbrella device. PATIENTS Two patients with abnormal location of the oval fossa and partial deficiency of the septal rim, three patients with multiple defects, and two patients with a mul...

Journal: :British heart journal 1976
G Thiene U Bortolotti V Gallucci V Terribile P A Pellegrino

Twelve specimens of truncus arteriosus communis have been studied anatomically, with special reference to the conal anatomy and to the associated cardiac anomalies which can create additional problems if surgical repair is planned. A wide spectrum of conal morphology has been observed, suggesting that differential conal absorption is a developmental characteristic of truncus arteriousus as well...

Journal: :iranian journal of neuro surgery 0
souad bakhti * corresponding author address: place 1er mai, algiers, algeria. tel: +213661411881. fax: +21323860025. email: [email protected] nabila tighilt assistant professor, pediatric neurosurgery division, mustapha pacha university hospital, algiers, algeria wahiba khoudir consultant in neurosurgery, department of neurosurgery, mustapha pacha university hospital, algiers, algeria mohamed djennas professor, chief department of neurosurgery, mustapha pacha university hospital, algiers, algeria

background & importance: iniencephaly is a rare cranio-cervical deformity. it belongs to neural tube defects. this disorder is characterized by a retroflexion of head, a very short neck, varying degrees of incomplete posterior closure of vertebrae and cervical and thoracic spinal synostosis. this malformation is associated with central nervous system and systemic malformations. most of patients...

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