Irradiation is a method that given to substances or plants or plant materials with radiation. During irradiation the high energy radiation pass through the matter and cause ionizing or electric or magnetic disturbances that affect the internal structure or matter of plants. During the past few decades, the ozone reduction problem has stimulated considerable research on higher plant responses to...

The use of micro-glass electrodes sensitive to the activity of selected cations has permitted a direct measurement of intracellular ionic activity , e. g., the activity of hydrogen ion in a single crab muscle fiber (CALDWELL 1954), and in a single squid giant axon (CALDWELL 1958, SPYROPOULOS 1960), the activity of sodium and potassium ion in a single squid giant axon (HINKE 1960). With a micro-...

Foreign bodies in maxillary sinuses are unusual clinical conditions, and they can cause chronic sinusitis by mucosal irritation. Most cases of foreign bodies in maxillary sinus are related to iatrogenic dental manipulation and only a few cases with non-dental origin are reported. Oroantral fistulas secondary to dental procedures are the most common way of insertion. Treatment is surgical remova...

PURPOSE Paranasal sinus mucocele is a benign, expansile mass which can occur as a result of trauma or spontaneous obstruction of a sinus tract. The purpose of this study was to describe and compare the clinical characteristics of primary mucoceles occurring in patients with no previous sinus surgery history or known cause of mucoceles and secondary mucoceles resulting as a complication followin...

A 38-year-old male came to outpatient clinic, presenting with a 1-month history of headache and right facial pain. There was no specific finding on nasal endoscopy. Paranasal sinuses computed tomography (PNS CT) showed unilateral soft tissue density maxillary sinus ground glass opacity zygomatic bone. And there suggestive malignancy in the subsequent PNS magnetic resonance imaging (MRI). We con...

Introduction: Dacryocystitis is a very common pathology and affects significant part of the population. Stenosis nasolacrimal ducts most frequent cause development dacryocystitis, main method treatment dacryocystorhinostomy. Material methods: to study stages dacryocystorhinostomy (DCR), various scientific journals (scientific from which we get information) were used. One first methods surgical ...

Resumo O presente estudo tem como objetivo construir um diálogo a partir dos narradores de Memórias póstumas Brás Cubas e Dom Casmurro, publicados por Machado Assis, em 1881 1889, respectivamente. Para tanto, baseando-se nos estudos na crítica construída entorno desses livros, especial, textos Souza (2006), Hansen (2008), Schwarz (2000) Caldwell análise partirá das relações entre os narradores-...

A Non-Hodgkin’s lymphoma rapidly forms a deep ulcer and invades the sinuses, orbital wall, palate. It is important to detect treat early as it can, although rarely, be accompanied by rapid ulcerative destruction sepsis due necrosis. An 80-year-old female visited our hospital complaining of right nasal congestion facial edema. fungal ball in maxillary sinus defect anterior wall maxilla were obse...

OBJECTIVES/HYPOTHESIS Endoscopic medial maxillectomy (EMM) has become the surgical procedure of choice for resection of maxillary sinus inverted papillomas (IPs). Traditionally, IPs pedicled on the anterior and/or lateral walls of the maxillary sinus have required an adjuvant Caldwell-Luc approach due to decreased visualization with transnasal endoscopy in these locations. The objective of the ...