Background: Measuring peak expiratory flow rate has been suggested as an important tool in asthma management by all international guidelines.  Objective: Studies on various populations have shown considerable variations in normal values of peak expiratory flow rate. Since reference standards for Iranian children are not available, the present study was performed to establish these standards. Me...

OBJECTIVE To provide growth reference values in body height, to determine the specific age at peak height velocity for Saudi male and female adolescences aged 9-18 years and to evaluate the appropriateness of using the Centers for Disease Control/National Center for Health Statistics (CDC/NCHS) growth standards in body height for the assessment of Saudi adolescents. METHODS A cross-sectional ...

Linear mountain wave theory is used to derive the general formulas of the gravity wave momentum flux (WMF) and its vertical divergence that develop in directionally sheared flows with constant vertical shear. Height variations of theWMF and its vertical divergence are studied for a circular bell-shapedmountain. The results show that the magnitude of the WMF decreases with height owing to variab...

OBJECTIVE To investigate whether patients with early primary progressive multiple sclerosis show changes in T1 relaxation time (T1-RT) in normal-appearing white matter (NAWM) and normal-appearing gray matter (NAGM) during 2 years and whether T1-RT at baseline predicts disability. METHODS Twenty-one patients and 12 control subjects were studied at baseline and after 2 years. Expanded Disabilit...

This study continues an approach that uses a unit selection corpus in order to investigate aspects of the phonetic realization of tonal categories. The focus lies on the peak position of German H*L pitch accents, specifically on the question of whether it is influenced by vowel quality. It is confirmed that vowel backness does not affect peak alignment at all. The distinction between tense and ...

INTRODUCTION Sequential stages in the development of the hand, wrist, and cervical vertebrae commonly are used to assess maturation and predict the timing of the adolescent growth spurt. This approach is predicated on the idea that forecasts based on skeletal age must, of necessity, be superior to those based on chronologic age. This study was undertaken to test this reasonable, albeit largely ...

This paper studies how focus, lexical stress and rising boundary tone act on F0 of the last preboundary word. We find that when the word is non focused, the rising boundary tone takes control almost from the beginning of the word and flattens F0 peak of the lexical stress. When the word is focused, the rising boundary tone is only dominant after F0 peak of lexical stress is formed. This peak is...

We show that recent measurements of the power spectrum of cosmic microwave background anisotropies by Boomerang and MAXIMA can be mainly characterized by four observables : the position of the Ðrst acoustic peak, the height of the Ðrst peak relative to COBE normalization, l1\ 206 ^ 6 ; H1\ 7.6^ 1.4 ; the height of the second peak relative to the Ðrst, and the height of the third H2\ 0.38^ 0.04 ...

The differences in phonation between men and women are thought to occur from anatomical differences in the larynx. However, it is not known if there are any differences in cough dynamics between the sexes. We investigated this by asking 100 healthy, non-smoking adults (50 male) to perform a voluntary cough into a tussometer. Each volunteer coughed at four different lung volumes, ranging from to...

We report on the first lattice calculation of the QCD phase transition using chiral fermions with physical quark masses. This calculation uses 2+1 quark flavors, spatial volumes between (4 fm)(3) and (11 fm)(3) and temperatures between 139 and 196 MeV. Each temperature is calculated at a single lattice spacing corresponding to a temporal Euclidean extent of N(t) = 8. The disconnected chiral sus...