Geospatial data analysis in Russia’s geoweb

The chapter examines the role of geospatial data in Russia’s online ecosystem. Facilitated by the rise of geographic information systems and user-generated content, the distribution of geospatial data has blurred the line between physical spaces and their virtual representations. The chapter discusses different sources of these data available for Digital Russian Studies (e.g., social data and crowdsourced databases) together with the novel techniques for extracting geolocation from various data formats (e.g., textual documents and images). It also scrutinizes different ways of using these data, varying from mapping the spatial distribution of social and political phenomena to investigating the use of geotag data for cultural practices’ digitization to exploring the use of geoweb for narrating individual and collective identities online

In-vitro response of platelet aggregation induced by agonists in chronic smoking coronary artery patients

WOS: 00017098830276

The effect of type II diabetes mellitus on platelet aggregation in patients who underwent percutaneous transluminal coronary angioplasty

WOS: 000174768500006PubMed ID: 11917198Background In noninsulin-dependent type II diabetic (tIIDM) patients it was reported that ADP-induced platelet aggregation response was increased with decreased level of platelet guanylate cyclase, This study was therefore designed to examine the effects of tIIDM on collagen-induced, in-vitro platelet aggregation in percutaneous transluminal coronary angioplasty (PTCA) patients, Methods Twenty patients with tIIDM and 30 nondiabetic patients who had successful PTCA were included in the study. Platelet-rich plasma samples from the patients before and after PTCA were treated with in-vitro Collagen and platelet aggregation waves were calculated via the turbidometric method of Born. The maximum amplitude (%) and the ratio of changes after PTCA in the study participants were measured by these waves and data were compared by student's t tests and nonparametric methods. The maximum amplitude of collagen-induced platelet aggregation before and after the procedure was also compared using variant analysis. Results The change in collagen-induced maximum amplitude of platelet aggregation in both wave I and wave 2 was significantly more (P < 0.001- P < 0.001) in the tIIDM group. The ratio of restenosis seen in the control coronary angiography made 6 months after intervention was found to be significantly more in the tIIDM group (P < 0.05). Conclusions Collagen-induced platelet aggregation response was greater in patients with tIIDM than in nondiabetic patients. This makes us think that tIIDM patients could need more potent antiplatelet therapy before PTCA after the blood glucose levels have been regulated, Coron Artery Dis 13:45-48 (C) 2002 Lippincott Williams & Wilkins

Effects of coronary artery bypass surgery on diastolic and systolic parameters of left ventricle in Type II diabetic patients

WOS: 000181555900003PubMed ID: 12614972Diabetes mellitus itself can cause systolic and diastolic dysfunctions of the left ventricle in the absence of atherosclerotic coronary artery disease. Effects of coronary bypass surgery on the left ventricular functions of Type II diabetic patients having atherosclerotic coronary artery disease were investigated. Forty-eight Type II diabetic and 63 nondiabetic multivessel coronary artery disease patients who had no differences in age, sex, drugs used, number of revascularized arteries and aortic cross-clamp time were included in the study. Doppler echocardiographic examinations before and 6 months after operations were made, and early diastolic flow (E), atrial contraction (A), deceleration (DT) and isovolumetric relaxation time (IVRT), E/A ratio and systolic parameters like end-diastolic volume, end-systolic volume, stroke volume and left ventricular ejection fraction (LVEF) were measured in sequence. Preoperative and postoperative echocardiographic measurements were compared in the same group and between groups by paired t and Student's t tests, respectively. P < .05 was accepted as statistically significant. E, A, E/A, DT, IVRT and LVEF were significantly improved after coronary bypass surgery in Groups I (P < .001, P < .01, P < .001, P < .01, P < .0001, P < .01) and II (P < .05, P < .05, P < .001, P < .001, P < .001, P < .001). Statistical comparison of values between groups showed better recovery in diastolic and systolic functions of diabetic and nondiabetic patients, respectively. It was concluded that Type II diabetic coronary patients by time could gain as much as the same benefit from coronary bypass surgery that nondiabetic patients had. (C) 2003 Elsevier Science Inc. All rights reserved

The effect of type II diabetes mellitus on platelet aggregation in patients undergoing coronary angioplasty

WOS: 00008913660244