Lung collapse is a known complication that affects most of the patients undergoing positive pressure mechanical ventilation. Such atelectasis and airways closure lead to gas exchange and lung mechanics impairment and has the potential to develop an inflammatory response in the lungs. These negative effects of lung collapse can be reverted by a lung recruitment maneuver (RM) i.e. a ventilatory s...

Multi-frequency radio polarimetric observations of the diffuse Galactic synchrotron background enable us to study the structure of the diffuse ionized gas via rotation measure maps. However, depolarization will introduce artifacts in the resulting rotation measure, most notably in the form of narrow, elongated “depolarization canals”. We use numerical models of a non-emitting Faraday rotating m...

Consider the congruence class Rm(a) = {a + im : i ∈ Z} and the infinite arithmetic progression Pm(a) = {a+im : i ∈ N0}. For positive integers a, b, c, d,m the sum of products set Rm(a)Rm(b)+Rm(c)Rm(d) consists of all integers of the form (a+im)(b+jm)+(c+km)(d+lm) for some i, j, k, l ∈ Z}. It is proved that if gcd(a, b, c, d,m) = 1, then Rm(a)Rm(b) + Rm(c)Rm(d) is equal to the congruence class R...

BACKGROUND Reduction mammoplasty (RM) is one of the most commonly performed plastic surgery procedures to treat symptomatic macromasty or to correct asymmetry. Occult breast carcinomas were rarely defined in RM specimens. There are few studies aiming to define the incidence of non-proliferative and precancerous lesions. MATERIAL AND METHODS We evaluated the pathological findings of the RM spe...

BACKGROUND Training for the Royal Marines (RMs) is considered to be one of the most arduous military training regimes in the world. Approximately 16% of the annual intake of recruits suffer an injury. Smoking has been found to be a predisposition to injury. OBJECTIVE To examine the relationship between recruits' smoking status on entry to training and subsequent incidence of injury. METHOD ...

Non-invasive electrocardiographic (ECG) techniques for assessing the electrical activity of selected regions within the cardiac muscle can benefit from suitable positioning of surface electrodes. This positioning is usually guided heuristically and complemented by clinical and experimental studies, but there is a lack of general methods to characterize quantitatively the ability of a given elec...