By analysing the hydrographs of karst springs it is possible to identify aquifer characteristics and, accordingly, the main features of a karst rock-fissure massif. Consequently, relevant data can be obtained by analysing hydrograph recession curves. This paper presents a detailed analysis and explanation of numerous cases of break points on recession curves via various values of the recession ...

The changes of higher-order aberrations (HOAs) after bilateral lateral rectus muscle recession were evaluated. Forty eyes of 20 children were enrolled and their wavefront information was assessed until postoperative 3 months. Even though the root mean square (RMS) of total aberration was not changed, the RMS of HOA was transiently increased at postoperative 1 week and returned to baseline level...

background and aims. the aim of the present cross-sectional study was to evaluate the effect of smoking on gingival recession in smoking and non-smoking young adults. materials and methods. the subjects consisted of 158 adults (75 males and 83 females), including 85 smokers and 73 non-smokers, with an age range of 18-33 years. all the subjects were clinically examined and answered questions reg...

Background: Gingival recession refers to apical migration of the gingival margin. Smoking is one of the most important risk factors for periodontitis that affects the prevalence, extent and severity of disease. The aim of this study was to assess the effects of smoking on gingival recession. Methods: Fifty smokers and 55 non-smokers took part in this cross-sectional study. Gingival recession on...

Flow recession curves of rivers are commonly simulated by the equation of a single linear reservoir which is determined by one parameter, the retention constant. In reality, however, retention-discharge characteristics are hardly linear and recession curves can be approximated only sectionwise by linear reservoirs with retention "constant" values which increase while discharge decreases. In the...

The western Sierra Madre is the main water-providing area of northern Mexico. However, most of this mountain range has suffered a progressive degradation of soils and vegetation due to overgrazing and deforestation, for four or five decades. The objective of this study is to determine the impacts of these changes on water balance and hydrodynamic basin behaviour. The hydrological data of two ba...

Gingival recession is characterized by the apical migration of the gingival margin, exposing the root surface. Studies have demonstrated several etiological factors for gingival recession such as periodontitis, traumatic toothbrushing, use of oral piercing, and past orthodontic therapy, among others. It might not be possible to identify and quantify the influence of each factor, and gingival re...

A method for estimation of mean baseflow residence time in watersheds from hydrograph runoff recession characteristics was developed. Runoff recession characteristics were computed for the period 1993–96 in the 2 km2 Winnisook watershed, Catskill Mountains, southeastern New York, and were used to derive mean values of subsurface hydraulic conductivity and the storage coefficient. These values w...

The aim of this study is to examine the equity premium puzzle in Iran for the quarterly period of 1993-2016. In this regard, the hybrid bivariate Garch model and also fuzzy dummy variables with consumption capital asset pricing model (C-CAPM) have been used. The results of study show that using C-CAPM within fuzzy dummy variables (CCAPM-F), the relative risk aversion coefficient of investor is ...