Let D be a digraph, V (D) and A(D) will denote the sets of vertices and arcs of D, respectively. A (k, l)-kernel N of D is a k-independent (if u, v ∈ N then d(u, v), d(v, u) ≥ k) and l-absorbent (if u ∈ V (D) −N then there exists v ∈ N such that d(u, v) ≤ l) set of vertices. A k-kernel is a (k, k − 1)-kernel. For a strong digraph D, a set S ⊂ V (D) is a separator if D \ S is not strong, D is σ-...

conclusions the automatic bolus-tracking method, results in higher contrast enhancement of the aorta and spleen at the portal phase, but has no effect on liver enhancement. however, bolus tracking is associated with reduced variability for liver enhancement among different patients. results forty-eight patients (23 male, 25 female, mean age=56.4±13.5 years) were included. the contrast enhanceme...

character-for example, to allow it to contain knots. Thus an alternative less restrictive condition is to assume that there is a tubular neighborhood N of s which is homeomorphic with a neighborhood N' of the circumference s', with s mapped on s'. Odd or even linkage with s of an arbitrary simple closed a, which has no points in common with s, is determined by a homology mod 2 relation in the r...

a 52-year-old woman presented with a history of diabetes mellitus under medical treatment and a surgical history of a cesarean section 20 years ago. the patient was referred to our emergency department because of a 2-week hypermenorrhea and unspecific abdominal pain without nausea and vomiting, fever, or other symptoms. she did not complain of weight loss.

background: the metabolic syndrome (mes) is associated with a high risk of diabetes and cardiovascular disease. the aim of the present study was to determine the prevalence of the metabolic syndrome as well as cut-off points for waist circumference (wc) for diagnosis of mes in zahedan, southeast iran. methods: totally, 1802 people (735 men and 1067 women) with metabolic syndrome were surveyed a...

conclusions there is a risk for constipation after abdominal surgery. postoperative practices are effective on the risk of constipation. objectives to determine constipation risk before the surgery, bowel elimination during postoperative period, and the factors affecting bowel elimination. patients and methods this is a cross-sectional study. it was conducted in a general surgery ward of a univ...

BACKGROUND Multiple studies have provided compelling evidence that the FTO gene variants are associated with obesity measures. The objective of the study was to investigate whether FTO variants are associated with a broad range of obesity related anthropometric traits in an island population. METHODOLOGY/PRINCIPAL FINDINGS We examined genetic association between 29 FTO SNPs and a comprehensiv...

BACKGROUND Given that it is not feasible to use dual x-ray absorptiometry (DXA) or other reference methods to measure adiposity in all pediatric clinical and research settings, it is important to identify reasonable alternatives. Therefore, we sought to determine the extent to which other adiposity measures were correlated with DXA fat mass in school-aged children. METHODS In 1110 children ag...

Thinodromus (s. str.) improcerus sp. n. is described from Thailand. New species differs other of Kraatz, 1857 by the structure aedeagus and smallest for known nominotypical subgenus size (body length 2.2 mm). characterized follows: punctation head pronotum more distinct than those elytra; anterior margin tergites III–V abdomen has 4 characteristic deep round depressions.