Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes.

An easy method is proposed to prepare poly(vinyl pyrrolidone) (PVP) and poly(N-isopropylacrylamide) (PNiPAAm) nanogels with sizes less than 100 nm. The underlying principle is to prepare dilute polymer solutions in acetone/water mixtures where acetone acts to break tridimensional structure of water hence disrupting the H-bonds bridging polymer coils causing separation and shrinkage in their sizes. Irradiation of these solutions by gamma-rays directly leads to the formation of intramolecular crosslinks within the coils resulting with nanogels with sizes smaller than precursor coils.

Production and characterization of biodegradable bi-layer films from poly(lactic) acid and zein.

Recently, packaging industry has turned to biodegradable packaging, and poly(lactic acid) has become the most remarkable polymer. However, the high oxygen permeability of PLA films significantly limits their use. Therefore, this study, it was aimed to improve the oxygen barrier properties of PLA films without adversely affecting the mechanical and water vapor barrier properties.

Green and Facile Synthesis of Pullulan-Stabilized Silver and Gold Nanoparticles for the Inhibition of Quorum Sensing.

Pullulan (Pull) decorated with monodisperse Ag and Au nanoparticles (NPs) was synthesized by a simple and green method. Samples were characterized by FTIR, UV-vis, NMR, XRD, TGA, SEM, XPS, DLS, and TEM. SEM images showed highly oriented microforms reported for the first time for Pull, because of the supramolecular self-assembling behavior of Pull chains.

Guide for Nuclear Medicine Applications During the COVID-19 Outbreak.

A viral pneumonia rapidly spread from Wuhan, China to all countries in late 2019. In February 2020, WHO named as Coronavirus Disease 2019 (COVID-19) and declared the pandemic on March 11, 2020. To prevent the spread of COVID-19, Ministry of Health of Republic of Turkey and international institutions have published documents defining hygiene rules.

The Role of Religiosity in Satisfaction With Life: A Sample of Turkish Gay Men.

In this study, we investigated the role of religiosity in satisfaction with life in a sample of Turkish gay men. A one-way analysis of covariance (ANCOVA) revealed that the religiosity had a significant effect on life satisfaction of gay men. Extrinsically religious gay men displayed significantly higher life satisfaction scores than both intrinsically religious and nonreligious gay men.

The role of 18F-FDG PET-CT in the detection of unknown primary malignancy: a retrospective study.

Background/aim: This study aimed to retrospectively evaluate the role of 18F-FDG PET/CT imaging in the detection of unknown primary tumor sites in patients with a suspicious malignancy.

Materials And Methods: We retrospectively examined the 18F-FDG PET/CT images of 50 unknown primary malignancy patients. The malignancy of the lesions with increased 18F-FDG uptake on PET images was defined by interpreting the nondiagnostic CT images that were obtained with the PET study.

Dorsal nail plate versus percutaneous k-wire fixation in the treatment of displaced distal radius fractures.

Distal radius fractures are the most common fractures in the elderly, yet the treatment is controversial and still debated in the literature. Twenty four patients aged older than sixty with distal radial fractures were treated by dorsal nail plate. We compared them with twenty four similar matched patients treated by percutaneous Kirschner wiring surgical method.

Evaluation of focal thyroid lesions incidentally detected in fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography images.

Background and Purpose: Increased uptake in the thyroid gland (TG) is often identified as an incidental finding on the whole body fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ( 18 F-FDG PET/CT) in non-thyroid cancer patients. Currently, there is no consensus on the appropriate approach for the management of these cases. Thyroid ultrasound, scintigraphy and fine-needle aspiration biopsy (FNAB) are suggested to exclude malignant thyroid lesions.

Pott's Disease in a 2-Year-Old Child Treated by Decompression and Anterior-Posterior Instrumented Fusion.

Introduction. Paraplegia and kyphotic deformity are two major disease-related problems of spinal tuberculosis, especially in the early age disease. In this study a 2-year-old boy who underwent surgical decompression, correction, and 360° instrumented fusion via simultaneous anterior-posterior technique for Pott's disease was reported.

The Role of Myocardial Perfusion Gated SPECT Study in Women with Coronary Artery Disease: A Correlative Study.

Objective: We aimed to evaluate the role of gated myocardial perfusion SPECT (MPS) and to investigate whether only the invasive coronary angiography (CAG) is sufficient in the diagnosis of the coronary artery disease (CAD) in women.

Material And Methods: Sixty-four women (62±10 years) with known CAD were included in this study. They had echocardiography (ECHO), stress/rest gated MPS and invasive CAG.

Scintigraphic evaluation of gallbladder motor functions in H pylori positive and negative patients in the stomach with dyspepsia.

Aim: To evaluate the relationship between gallbladder (GB) motor function and H pylori infection in the stomach.

Methods: All cases (86) underwent the 14C urea breath test (UBT). 14C-UBT was found as positive in 58 and negative in 28 dyspeptic patients.