Interlayer silylation of layered sodium octosilicate (Na-Oct) with various organoalkoxysilanes was conducted using hexadecyltrimethylammonium ion-exchanged (C16TMA-Oct) as an intermediate in the presence or absence tetrabutylammonium fluoride (TBAF). The degree increased by adding TBAF. It is suggested that F− ions perform a nucleophilic attack on alkoxysilanes, which promotes reaction. C16TMA-...

O ptical coherence tomography (OCT) is a commonly used technology that noninvasively generates images of the retina in cross section or in three dimensions.1-5 Advances in technology have facilitated additional applications of OCT such as phase-sensitive OCT, polarization-sensitive OCT, and spectroscopic OCT.6 These methods hold the promise of combining structural information with functional im...

PURPOSE To characterize the optical coherence tomography (OCT) angiography, en face OCT, and microperimetry features of paracentral acute middle maculopathy in both the acute phase and after resolution, and to propose a classification of distinct subtypes of this entity. DESIGN Retrospective observational case series. METHODS Clinical histories, high-resolution digital color imaging, spectr...

INTRODUCTION This study aimed to evaluate the ability of 2 optical coherence tomographic (OCT) systems to detect apical dentinal microcracks. METHODS Twenty extracted human single-rooted mandibular incisors were selected. After root canal preparation with an R40 Reciproc file (VDW, Munich, Germany), the specimens presenting apical microcracks were identified using micro-computed tomographic (...

POU homeodomain proteins are important regulators of ubiquitous as well as tissue-specific transcription. These factors include the broadly expressed octamer motif-binding protein Oct-1 and the related cell-specifically expressed protein Oct-2. These two proteins differ in the types of octamer motif-containing promoters they preferentially activate; Oct-1 can activate RNA polymerase II transcri...

PURPOSE The purpose of this study was to compare the central corneal thickness (CCT) measurements of four noncontact devices in healthy eyes. MATERIALS AND METHODS In a sample of 45 healthy controls, CCT was measured using an optical biometer (IOLMaster 700) based on swept-source optical coherence tomography (SS-OCT), high-resolution rotating Scheimpflug camera system (Pentacam HR), spectral-...

Optical coherence tomography (OCT) (Huang et al., 1991) is becoming an increasingly important imaging tool for many applications in biology and medicine, such as diagnosis and guided surgery. Due to its high resolution and fiber catheter capability, OCT is more attractive than current imaging technologies, such as ultrasound. An OCT system with higher sensitivity is essentially important for im...

PURPOSE Optical coherence tomography (OCT) is a noninvasive diagnostic technique that may be useful for both qualitative and quantitative analyses of the periodontium. Micro-computed tomography (micro-CT) is another noninvasive imaging technique capable of providing submicron spatial resolution. The purpose of this study was to present periodontal images obtained using ex vivo dental OCT and to...

INTRODUCTION AND OBJECTIVES The relationship between the lumen dimensions obtained in human coronary arteries using intravascular ultrasound (IVUS) and those obtained using optical coherence tomography (OCT) is not well understood. The objectives were to compare the lumen measurements obtained ex vivo in human coronary arteries using IVUS, OCT and histomorphometry, and in vivo in patients using...

BACKGROUND Despite the excellent responses to imatinib therapy observed in patients with chronic phase chronic myeloid leukemia, approximately 25% of patients display primary resistance or suboptimal response. The OCT-1 activity in mononuclear cells reflects the efficiency of active influx of imatinib. OCT-1 activity in mononuclear cells is highly variable between patients and significantly cor...