Enhanced light emission from large-area monolayer MoS₂ using plasmonic nanodisc arrays.

Single-layer direct band gap semiconductors such as transition metal dichalcogenides are quite attractive for a wide range of electronics, photonics, and optoelectronics applications. Their monolayer thickness provides significant advantages in many applications such as field-effect transistors for high-performance electronics, sensor/detector applications, and flexible electronics. However, for optoelectronics and photonics applications, inherent monolayer thickness poses a significant challenge for the interaction of light with the material, which therefore results in poor light emission and absorption behavior.

Visible-frequency metasurfaces for broadband anomalous reflection and high-efficiency spectrum splitting.

Ultrathin metasurfaces have recently emerged as promising materials that have huge potential to enable novel, flat optical components, and surface-confined, miniature photonic devices. Metasurfaces offer new degrees of freedom in molding the optical wavefronts by introducing abrupt and drastic changes in the amplitude, phase, and/or polarization of electromagnetic radiation at the wavelength scale. By carefully arranging multiple subwavelength anisotropic or gradient optical resonators, metasurfaces have been shown to enable anomalous transmission, anomalous reflection, optical holograms, and spin-orbit interaction.

Reduced near-infrared absorption using ultra-thin lossy metals in Fabry-Perot cavities.

We show that a triple-layer metal-insulator-metal (MIM) structure has spectrally selective IR absorption, while an ultra-thin metal film has non-selective absorption in the near infrared wavelengths. Both sub-wavelength scale structures were implemented with an ultra-thin 6 nm Cr top layer. MIM structure was demonstrated to have near perfect absorption at λ = 1.

The relationship between coronary artery disease and pericoronary epicardial adipose tissue thickness.

Objectives: A retrospective study to investigate the relationship between epicardial adipose tissue thickness (EATT) and presence of coronary artery plaque, coronary artery disease (CAD) and CAD risk factors.

Methods: Multidetector computed tomography (MDCT) coronary angiography images were reviewed. Left anterior decending artery, right coronary artery and left circumflex artery pericoronary EATT were measured.

Structurally tunable resonant absorption bands in ultrathin broadband plasmonic absorbers.

Light absorption is a fundamental optical process playing significantly important role in wide variety of applications ranging from photovoltaics to photothermal therapy. Semiconductors have well-defined absorption bands with low-energy edge dictated by the band gap energy, therefore it is rather challenging to tune the absorption bandwidth of semiconductors. However, resonant absorbers based on plasmonic nanostructures and optical metamaterials emerged as alternative light absorbers due to spectrally selective absorption bands resulting from optical resonances.

1H-magnetic resonance spectroscopy in obsessive-compulsive disorder: effects of 12 weeks of sertraline treatment on brain metabolites.

Several neuroimaging studies have investigated brain metabolite abnormalities in patients with obsessive-compulsive disorder (OCD) and also explored metabolic changes after OCD treatments using proton magnetic resonance spectroscopy ((1)H-MRS). The main objective of this study was to investigate the effects of a selective serotonin re-uptake inhibitor (SSRI) treatment on the neurochemical levels in patients with OCD. In the present study, levels of N-acetylaspartate (NAA), choline, and myo-Inositol were measured in terms of their ratios with creatine (Cr) using (1)H-MRS.

Proton magnetic resonance spectroscopy in obsessive-compulsive disorder: evidence for reduced neuronal integrity in the anterior cingulate.

Neuroimaging studies have suggested that dysfunction of the cortico-striatal-thalamo-cortical (CSTC) circuit is a key pathophysiologic feature of obsessive-compulsive disorder (OCD). Several studies using proton magnetic resonance spectroscopy ((1)H MRS) have found abnormal neural metabolite concentrations among OCD patients. The aim of this study was to investigate the metabolic integrity of the anterior cingulate, caudate and putamen in OCD.

Dual stenting using low-profile LEO baby stents for the endovascular management of challenging intracranial aneurysms.

Background And Purpose: Endovascular treatment of wide-neck, complex, and distally located cerebral aneurysms is a challenging issue. This study evaluated the safety and efficacy of dual stent placement by using a low-profile stent system (LEO Baby) for the treatment of challenging distal intracranial aneurysms.

Materials And Methods: We retrospectively reviewed patients in whom at least 1 LEO Baby stent was used in the context of dual stent placement for the treatment of intracranial aneurysms.

Color Doppler analysis of uterine, spiral, and intraovarian artery blood flow before and after treatment with cabergoline in hyperprolactinemic patients.

Prolactin (PRL) may have stimulatory effects on vascular resistance. We aimed to analyze uterine, spiral, and intraovarian artery blood flow by Doppler ultrasonography in hyperprolactinemic patients prior to and after treatment with cabergoline. The study was conducted in Sisli Etfal Training and Research Hospital gynecology outpatient clinic between 1 March 2010 and 30 September 2011.

Serum interleukin 17 levels in patients with Crohn's disease: real life data.

Unlabelled: The aim of this study was to investigate serum IL17 levels in patients with Crohn's disease (CD) and to investigate the relationship between serum IL17 levels with disease activity.

Methods: Fifty patients with CD and sex- and age-matched 40 healthy controls were included in the study. The serum IL17 levels, complete blood count, blood chemistry, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) levels were measured, and Crohn's disease activity was calculated using Crohn's disease activity index (CDAI).

Normocalcemic hyperparathyroidism and insulin resistance.

Objective: To determine whether insulin resistance (IR) accompanies normocalcemic primary hyperparathyroidism (NCPHP).

Methods: Twenty-five patients with NCPHP and 25 age-, sex-, and body mass index (BMI)-matched controls were included the study. Patients were diagnosed NCPHP if their serum calcium (Ca) concentrations and ionized serum Ca levels were in the normal range but parathyroid hormone (PTH) levels were inappropriately and persistently high.

Comparison of two intraosseous devices in adult patients in the emergency setting: a pilot study.

Objective: To compare two intraosseous (IO) insertion devices in terms of safety and ease of use in patients who need urgent vascular access in the emergency setting following failed attempts for intravenous lines.

Methods: This prospective, randomized clinical study compared two different IO access devices in adults (≥16 years of age or weighing>40 kg) admitted to our emergency department with difficult peripheral venous access and in need of urgent intervention. The findings were compared in terms of the rates of successful insertion of spring-loaded impact-driven adult BIG and the battery-driven EZ-IO devices on the first attempt, difficulty of use, time taken to complete the insertion, and complication rates.

Clinicopathological characteristics and prognosis of patients according to recurrence time after radical nephrectomy for localized renal cell carcinoma: a multicenter study of Anatolian Society of Medical Oncology (ASMO).

Aim: We investigated the clinicopathological features in patients with recurrent RCC within 5 years or more than 5 years after nephrectomy and determined predictors of survival and response treatment after recurrence.

Materials And Methods: We retrospectively evaluated 144 patients with disease recurrence; 73 had recurrence more than 5 years after radical nephrectomy. We compared clinicopathological characteristics in patients with disease recurrence before vs.

Ultranarrow band absorbers based on surface lattice resonances in nanostructured metal surfaces.

Nanostructured metals have received a significant amount of attention in recent years due to their exciting plasmonic and photonic properties enabling strong field localization, light concentration, and strong absorption and scattering at their resonance frequencies. Resonant plasmonic and metamaterial absorbers are of particular interest for applications in a wide variety of technologies including photothermal therapy, thermophotovoltaics, heat-assisted magnetic recording, hot-electron collection, and biosensing. However, it is rather challenging to realize ultranarrow absorption bands using plasmonic materials due to large optical losses in metals that decrease the quality factor of optical resonators.

Effect of exercise on appetite-regulating hormones in overweight women.

Over the past decade, our knowledge of how homeostatic systems regulate food intake and body weight has increased with the discovery of circulating peptides such as leptin, acyl ghrelin, des-acyl ghrelin and obestatin. These hormones regulate the appetite and food intake by sending signals to the brain regarding the body's nutritional status. The purpose of this study was to investigate the response of appetite-regulating hormones to exercise.

Fasting and post-prandial glucagon like peptide 1 and oral contraception in polycystic ovary syndrome.

Objective: We aimed to investigate whether fasting and meal regulated glucagon like peptide 1 (GLP-1) secretion are altered in patients with polycystic ovary syndrome (PCOS) compared to healty women and whether oral contraceptive use influence GLP-1 secretion dynamics in the syndrome.

Design: Prospective observational study.

Patients: Fourteen lean normal glucose tolerant patients with PCOS and 11 age- and body mass index (BMI)-matched healthy women.

Treatment of ruptured blood blister-like aneurysms with flow diverter SILK stents.

Introduction: Blood blister-like aneurysms (BBAs) are fragile and difficult to treat. Routine surgical and endovascular treatment methods, such as clipping, clip wrapping, primary coiling, or stent assisted coiling, have relatively high morbidity and mortality rates. In this study, we report clinical and angiographic results for treatment of ruptured BBAs using flow diverter stents.

Low prevalence of growth hormone deficiency in Turkish patients with Hashimoto's thyroiditis.

Background: Hashimoto's Thyroiditis (HT) is frequently isolated, but may also be associated with other autoimmune disorders. Autoimmune hypophysitis can result in growth hormone deficiency (GHD). Various prevalences of GHD have been reported in HT in several different ethnic populations.

The effect of platelet-rich plasma on osteochondral defects treated with mosaicplasty.

Purpose: This study investigated the efficacy of platelet-rich plasma (PRP) on articular surfaces on which the mosaicplasty technique was performed. Our hypothesis was that PRP can accelerate the osseointegration process and enhance the quality of articular integrity after the mosaicplasty procedure.

Methods: Standard defects were created in the femoral groove of both patellofemoral joints of 12 New Zealand rabbits.

Primary adrenal lymphoma with secondary central nervous system involvement: a case report and review of the literature.

Unlabelled: Approximately 10%-20% of all systemic lymphomas have central nervous system (CNS) involvement, which has been correlated to a worsened prognosis. It is well known that secondary involvement of the adrenal glands may occur in up to 25% of patients during the course of diffuse lymphoma. Primary adrenal lymphoma (PAL), however, is a different entity, and it is defined as the presence of adrenal lymphoma without evidence of either nodal involvement or leukemia.

Effect of epidermal growth factor receptor status on the outcomes of patients with metastatic gastric cancer: A pilot study.

The expression of epidermal growth factor receptor (EGFR) has been linked to clinical outcome in several solid tumors. However, the clinical significance of EGFR (c-erbB1) in gastric cancer remains unclear. The present study was designed to detect the clinical implications of EGFR in the Turkish population.

Is computed tomography necessary to determine liver injury in pediatric trauma patients with negative ultrasonography?

Purpose: Abdominal trauma is the third most common cause of all trauma-related deaths in children. Liver injury is the second most common, but the most fatal injury associated with abdomen trauma. Because the liver enzymes have high sensitivity and specificity, the use of tomography has been discussed for accurate diagnosis of liver injury.

Ultrasound neurography in the evaluation of sciatic nerve injuries.

[Purpose] The aim of this clinical study was to investigate the benefits and the basic principles of ultrasonographic examination in the evaluation of sciatic nerve injuries. [Subjects and Methods] Patients with sciatic nerve injury were evaluated using a real-time utrasonographic examination. The capabilty of ultrasonography in terms of determination of the type and the localization of injury, the position of the proximal and distal nerve segments, the presence or absence of a neuroma, and perilesional scar tissue were evaluated in all cases.