Background: Hypoxia is an intensive environmental stressor which affects the psychophysiological state of an individual. It has been confirmed to influence the fundamental frequency of voice. This study aims to investigate the effect of different hypoxia conditions on formant characteristics of voice. Method: Eighteen volunteers recorded voice using a mobile phone in two phases. Study-1: Six su...

We have developed a novel and versatile three-dimensional cellular automaton model of brain tumor growth. We show that macroscopic tumor behavior can be realistically modeled using microscopic parameters. Using only four parameters, this model simulates Gompertzian growth for a tumor growing over nearly three orders of magnitude in radius. It also predicts the composition and dynamics of the tu...

The incidence of second malignant neoplasms (SMNs) was investigated among 1,988 patients with complete data, enrolled in the SIOP Wilms tumor trials and studies 1, 2, 5, and 6, treated between September 1971 and October 1987. By the end of 1992, eight SMNs were documented, whereas only 1.3 were expected (standardized incidence ratio [SIR] = 4.15; 95% CI = 1.79, 8.17). The risk increases in the ...

The objective of this single-blinded randomized controlled trial was to assess anxiety levels in nursing school students of the Beneficência Portuguesa Hospital (São Paulo) and the effectiveness of auriculotherapy in the reduction of these levels. The Trait-Anxiety Inventory State was applied at the beginning of the study, after 8 and 12 sessions, and at follow-up (15 days). The sample was comp...

The considerable interest in xenotransplantation at present is linked to the persisting imbalance between the need for organ substitutes and their availability, which has no chance of being righted in view of the growing scarcity of so-called " brain deaths " which represent less than 1% of hospital deaths. Because of progress achieved by modern medicine and biology, techniques for transplantin...

VI. VOLTAGE GA'r~D Ca" + C ~ , lc, 1. Effects of O-Stimulation on Ic, 2. Regulation of Ca "÷ Channel Properties by Narepinephrine and cAMP 3. Relationship Between Inactivation and Availability 4. Purification of Ca" + Channels and their Phosphorylation 5. Effects of ACh on Control Ic. 6. Effects of ACh on [3-Stimulated Ic. 7. Possible Role of cGMP in Regulating Ic. 8. Direct Effects of G-Protei...

The [2 + 2] photochemical cycloadditions (the Paternò-Büchi reaction) of 5- or/and 6-methyl substituted uracil derivatives with 4,4'-disubstituted benzophenones generate two series of regioisomeric oxetanes, 3 and 4. The regioselectivity (3/4) and the photochemical efficiency are strongly dependent on methyl substituent(s) at the C5-C6 double bond of the uracils. The more the methyl groups at t...

UNDERSTANDING EPILEPSY By R. Kemp. (Pp. vii + 93. 15s.) London: Tavistock Publications. 1963. This small book is intended for the epileptic patient and his relatives. Its purpose is to help them to understand what epilepsy is and to gain their collaboration in its treatment and management. The intention is excellent, but the author appears at times not to be familiar with the day-to-day clinica...

The United States has seen the relative rate of stroke death fall by 35.8% and the actual number of stroke deaths decline by 22.8% from 2000 to 2010, primarily due to reduced stroke incidence and lower case fatality rates [1]. Despite substantial progress in acute stroke care over the last few decades, stroke continues to be the leading cause of long-term disability in the United States [2]. Th...

Background and Aim: This study aimed at analyzing the demographic characteristics of the patients with non-traumatic intracranial hemorrhage, their angiographic results and the correlation between computed tomography (CT) scan and angiography findings. Methods and Materials/Patients: In a descriptive study, we retrospectively reviewed the records of the patients with non-traumatic intracranial...