Adipranoto

Among the energy storage devices for applications in electric vehicles and stationary uses, lithium batteries typically deliver high performance. However, there is still a missing link between the engineering developments for large-scale batteries and the fundamental science of each battery component. Elucidating reaction mechanisms under practical operation is crucial for future battery technology. Here, we report an operando diffraction technique that uses high-intensity neutrons to detect reactions in non-equilibrium states driven by high-current operation in commercial 18650 cells...

This study examined the local structural properties of CuI at low temperatures of 10-300 K by x-ray diffraction (XRD) and extended x-ray absorption fine structure (EXAFS) measurements at the Cu K edge. The XRD data were refined using two models, split (distorted zinc-blende structure) and non-split (zinc-blende structure), using a conventional Rietveld refinement combined with a maximum entropy method (MEM). MEM/Rietveld analyses showed that both the split and non-split models could fit the data. EXAFS revealed the split model fit to be better than the non-split model...

PURPOSE: The purpose of this study was to investigate the potential value of CT virtual intravascular endoscopy (VIE) in the visualization and assessment of coronary plaques in patients suspected of coronary artery disease. MATERIALS AND METHODS: 20 (13 men, 7 women, mean age 54 years) consecutive patients with suspected coronary artery disease undergoing 64-slice CT angiography were included in the study. Four main coronary artery branches were assessed with regard to the presence of coronary plaques based on 2D axial, multiplanar reformation, 3D volume rendering and VIE visualizations...

OBJECTIVES: To determine the safety and efficacy of a post-stenting anti-platelet regimen of aspirin without additional ticlopidine or clopidogrel after successful heparin-coated stent implantation. METHODS: A prospective, non-randomized, multi-center pilot study of patients undergoing percutaneous coronary intervention, including those with acute coronary syndromes and small vessels with one-month clinical follow-up, was undertaken. Patients received a heparin-coated stent and were treated with aspirin only...

Acute cardiac rupture following acute myocardial infarction (AMI) carries a high mortality. The progression and rapid hemodinamic deterioration is the usual clinical course, with 50-80% mortality within the first week. The combination of septal perforation, impending cardiac rupture of left ventricular (LV) aneurysm and rupture of papillary muscle after AMI has rarely been reported. This article describes a case of successful surgical repair of this condition in a 52 years old man. The important clinical features were as follows: 1) a sick looking patient in gross congestion heart failure, 2) persistent pulmonary oedema, 3) hepatomegali, 4) arrhythmias, 5) cardiogenic shock...

No abstract text is available yet for this article.

To evaluate the adaptation of the heart to exercise during pacing, 15 patients with permanent endocardial pacemakers were studied; nine patients had atrioventricular universal (DDD) pacemakers (Symbios 7005) and six patients had activity detecting rate-responsive ventricular (VVIR) pacemakers (Activitrax 8403). Left ventricular function in each patient during rate variable pacing was compared to ventricular function during VVI single-rate pacing. End-systolic and end-diastolic volume changes during exercise were measured by radionuclide angiography and the amount of volume change was used to assess left ventricular function...