The rate coefficients for gas-phase reaction of trifluoroacetic acid (TFA) with two Criegee intermediates, formaldehyde oxide and acetone oxide, decrease with increasing temperature in the range 240-340 K. The rate coefficients k(CH2 OO + CF3 COOH)=(3.4±0.3)×10-10  cm3  s-1 and k((CH3 )2 COO + CF3 COOH)=(6.1±0.2)×10-10  cm3  s-1 at 294 K exceed estimates for collision-limited values, suggesting...

Three chitosan (CS), polyethylene glycol (PEG) and polylactic acid (PLA) nanocomposite systems containing SiO2 nanoparticles and water molecules were designed by molecular dynamics (MD) simulations to deliver pipobromane (PIP) anticancer drug in order to discover the most appropriate drug delivery system (DDS) in aqueous medium which was analogous to the human body. The density for the CS matri...

Abstract For solving numerically fractional differential equations, we have to take into account a rising flow of works as (Dehestani et al. in Appl Math Comput 336:433–453, 2018, https://doi.org/10.1016/j.amc.2018.05.017 , Rahimkhani Model 40:8087–8107, 2016, https://doi.org/10.1016/j.apm.2016.04.026 ) that show the advantage using transformation $$x \rightarrow x^\alpha $$ <mml:math xmlns:mml...

AIM To obtain a reference range of morphological indices and establish a formula to accurately predict standard liver volume (SLV) in Chinese adults. METHODS Computed tomography (CT)-estimated total liver volume (CTLV) was determined in 369 Chinese adults. Age, sex, body weight, body height, body mass index, and body surface area (BSA) were recorded using CT. Total splenic volume, portal veno...

Reference curves for the growth of the uterus and ovaries were established for prepubertal and postpubertal girls by examining 34 healthy schoolgirls of age 7, 10, 13, and 17 years by grayscale ultrasound. Uterine volume increased from mean 0.9 cm3 at 7 years to 53 cm3 at 17 years. The ovaries could not be detected by ultrasound in girls of 7 years, but ovarian volume increased from mean 0.7 cm...

INTRODUCTION The objective of this study was to evaluate the value of serum prostate-specific antigen (PSA) and prostate-specific antigen density (PSAD) in the diagnosis of prostate cancer. MATERIALS AND METHODS A total of 330 consecutive patients suspected of having prostate cancer due to either abnormal digital rectal examination or elevated serum PSA levels underwent transrectal ultrasonog...

Magnetic resonance (MR) image-based computerized segmentation was used to measure various intracranial compartments in 49 normal volunteers ranging in age from 24 to 80 years to determine age-related changes in brain, ventricular, and extraventricular cerebrospinal fluid (CSF) volumes. The total intracranial volume (sum of brain, ventricular, and extraventricular CSF) averaged 1469 +/- 102 cm3 ...

INTRODUCTION The possibilities of PSA (prostate specific antigen) test in screening of prostatic cancer may be evaluated by measuring its sensitivity, specificity and positive predictive value. The majority of reference articles in this field has evaluated the possibility of detection of prostatic cancer by radioimmunoassay (RIA). MATERIAL AND METHODS Prospective study included 2000 male pati...

Analysis of velocity acceleration proximal to a regurgitant valve has been proposed as a method to quantify the regurgitant flow rate (Qo). Previous work has assumed inviscid flow through an infinitesimal orifice, predicting hemispheric isovelocity shells, with calculated flow rate given by Qc = 2 pi rN2vN, where vN is user-selected velocity of interest and rN is the distance from that velocity...