Modification of the Cu current collector by magnetron sputtering to improve the cycle performance of MxOy (M:Ni,Mn,Co) anodes for lithium ion batteries

The present work reports a methodology to produce electrodes with superior performances for batteries. Herein, the fabrication of an anode material that is made of a ternary transition metal oxides (nickel-manganese-cobalt containing oxide, NMCO) is achieved by hydrothermal method. Of the two kinds of electrodes prepared, the first is realized by direct lamination of a slurry that contains NMCO powders active materials onto the Cu foil. Then, to improve the mechanical, physical and electrochemical performance of the electrode, a novel design is proposed, where an additional Ni underlay thin film (10 nm thick) is magnetically sputtered onto the Cu foil, before the lamination of NMCO containing slurry (Ni/NMCO). The characterization results show that upon the existence of Ni underlay film both the adhesion as well as the stress accomodation ability of the electrode are improved. Moreover, the charge transfer resistance at the electrode/current collector interface is noted to be decreased due to the presence of the Ni underlay thin film. As a consequence, the galvanostatic tests show that Ni/NMCO anode exhibits an enhanced discharge capacity of 845 mAh g−1 after 200 cycles under a load of 0.1 A g−1, whilst the NMCO anode delivers a discharge capacity of 442 mAh g−1. Moreover, when the Ni/NMCO anode is cycled at 1 A g−1, it delivers a discharge capacity of 844 mAh g−1 even after 100 cycles. Considering the position of the magnetron sputtering process in today's industrial applications and its effect on the electrode performance, the results of this study are expected to pave the way for designing electrodes of different battery applications, especially solid state batteries.International Technological Universit

Bakırcılar Çarşısı : Antep’in gizli kahramanları

Ankara : İhsan Doğramacı Bilkent Üniversitesi İktisadi, İdari ve Sosyal Bilimler Fakültesi, Tarih Bölümü, 2015.This work is a student project of the The Department of History, Faculty of Economics, Administrative and Social Sciences, İhsan Doğramacı Bilkent University.by Pamuk, Fatih

Familial Mediterranean Fever

Familial Mediterranean Fever is an autosomal recessive inherited disease with a course of autoinflammation, which is characterized by the episodes of fever and serositis. It affects the populations from Mediterranean basin. Genetic mutation of the disease is on MEFV gene located on short arm of Chromosome 16. The disease is diagnosed based on clinical evaluation. Amyloidosis is the most important complication. The only agent that decreases the development of amyloidosis and the frequency and severity of the episodes is colchicine, which has been used for about 40 years. In this review, we aimed to discuss especially the most recent advances about Familial Mediterranean Fever which is commonly seen in our population

Rectal carcinoid tumor with bone marrow and osteoblastic bone metastasis: A case report

Rectal carcinoids comprise 12.6% of all carcinoid tumors and represent the third largest group of the gut carcinoids. A 64-year-old woman was diagnosed as high-grade neuroendocrine carcinoma. She had liver, bone, and bone marrow metastasis. Carcinoid syndrome was diagnosed due to diarrhea, nausea, vomiting, tachycardia, and high level of 24-hour urinary 5-hydroxyindoleacetic acid (160 mg/24 hours). No response was obtained by octreotide treatment. Rectal carcinoid tumors usually show favorable prognosis; however, poorly differentiated tumors might have unusually aggressive behavior and resistance to treatment. Bone marrow involvement might be a poor prognostic factor in carcinoid tumor as has been the case in many other tumors

The prevalence of upper extremity deep venous thrombosis

Background: This study aims to determine the prevalence and characteristics of symptomatic upper extremity deep venous thrombosis (UEDVT) and its association with symptomatic pulmonary embolism (PE) in a tertiary care hospital.Background: This study aims to determine the prevalence and characteristics of symptomatic upper extremity deep venous thrombosis (UEDVT) and its association with symptomatic pulmonary embolism (PE) in a tertiary care hospital.Methods: Between January 2001 and December 2003, the prevalence of symptomatic UEDVT at a university hospital within the past three-years was evaluated retrospectively.Patients were identified by hospital records, and a computerrecorded list of all color Doppler ultrasonograms, venograms,and magnetic resonance angiograms of upper extremitieswas also used. Data were obtained from medical records and follow-up patient questionnaires.Results: Symptomatic UEDVT was diagnosed in 91 of 100.942 patients of all ages (0.09%) [or 89 of 70.751 of adult patients ?20 years of age; 0.13%]. Seventy three (80%) of 91patients with UEDVT had multiple risk factors; 33 patients (36%) had malignancy, 34 patients (37%) had central venous catheters (CVCs), peripheral venous lines (PVLs) and cardiac pacemaker (n=1), 36 patients (40%) had chronic disorders (chronic obstructive pulmonary disease, cardiac disease, chronic renal failure with hemodialysis), 12 patients (13%) had trauma or surgery, 13 of 53 patients (24%) had UEDVT secondary to thrombophilia. Symptomatic PE developed prior to thrombosis being treated in 32 patients (35%). All patients received anticoagulant therapy except 13 patients (5 with thrombolytic therapy; 8 with thrombectomy) who were treated with other methods initially.Conclusion: Upper extremity deep venous thrombosis is not a rarely seen pathology. Its etiology is usually multifactorial and secondary to thrombophilia, CVC, PVL, chronic diseases and cancer. As PE resulting from UEDVT is a common complication, patients with risk factors should be diagnosed and treated early

Determination of Turkish norms of psychometric tests for diagnosing minimal hepatic encephalopathy and proposal of a high sensitive screening test battery.

Background Psychometric hepatic encephalopathy score (PHES) needs local standardization. Aims This study aimed at standardizing PHES for Turkish patients and compare them with German norms; to determine minimal hepatic encephalopathy (mHE) prevalence with two different methods [PHES battery and Critical Flicker Frequency (CFF)] and to assess whether sub-tests of the battery can be used for screening for mHE. Methods Healthy volunteers (n = 816; 400 male) and cirrhotics (n = 124; 58 male) were included. For mHE diagnosis PHES score threshold was set at <= - 5 points and that of CFF at < 39 Hz. For comparing German and Turkish norms, datasets were combined. Multiple backward procedure was applied to assess effects of age, sex and education on single tests of the battery. Receiver operating characteristic (ROC) curves were created for assessing diagnostic capabilities of subtests of the battery. Results PHES norms for Turks were developed. MHE prevalence in compensated cirrhotics was 29.8% and 27.4% with PHES and CFF tests, respectively, with low compatibility (kappa coefficient 0.389); mHE prevalence decreased to 16% when both tests were combined. Turks performed worse vs Germans in the digit symbol (DS) and serial dotting (SD) subtests but performed better in other subtests. In ROC analyzes of subtests, the combination of DS + SD tests achieved an AUROC of 0.974 versus PHES. Conclusions Use of two methods for diagnosing mHE is important for research purposes. From a clinical perspective, sensitivity with acceptable specificity may suffice for screening instruments for mHE. Combined use of DS and SD subtests of the PHES battery appears suitable for this purpose

Reliability and validity of the Turkish version of the New Cleveland Clinic Colorectal Cancer Quality of Life Questionnaire

Purpose: This study aims to adapt and validate the Cleveland Clinic Colorectal Cancer Quality of Life Questionnaire (CCF-CaQL) in Turkish, addressing the significant need for reliable, language-specific QoL measures for colorectal cancer (CRC) in Turkiye. This effort fills a critical gap in CRC patient care, enhancing both patient-provider communication and disease-specific QoL assessment. Methods: The CCF-CaQL was translated into Turkish, verified for accuracy, and reviewed for clarity and relevance. Eligible patients who underwent colorectal surgery for cancer between July 2021 and July 2022 from six hospitals completed the CCF-CaQL and SF-36 questionnaires. For analysis, confirmatory factor analysis using Smart PLS 4 and descriptive statistics were employed. The questionnaire’s reliability and validity were assessed using Cronbach alpha, composite reliability, and the heterotrait-monotrait (HTMT) ratio, along with multicollinearity checks and factor loadings. Nonparametric resampling was used for precise error and confidence interval calculations, and the Spearman coefficient and split-half method were applied for reliability testing. Results: In the study involving 244 colorectal cancer patients, confirmatory factor analysis of the CCF-CaQL indicated effective item performance, with one item removed due to lower factor loading. The questionnaire exhibited high internal consistency, evidenced by a Cronbach alpha value of 0.909. Convergent validity was strong, with all average variance extracted (AVE) values exceeding 0.4. Discriminant validity was confirmed with HTMT coefficients below 0.9, and no significant multicollinearity issues were observed (VIF values < 10). Parallel testing with the SF-36 scale demonstrated moderate to very strong correlations, affirming the CCF-CaQL’s comparability in measuring quality of life. Conclusion: The Turkish version of the CCF-CaQL was validated for assessing quality of life in colorectal cancer patients. This validation confirms its reliability and cultural appropriateness for use in Turkiye. The disease-specific nature of the CCF-CaQL makes it a useful tool in clinical and research settings, enhancing patient care by accurately monitoring treatment effects and interventions in the Turkish colorectal cancer patient population

Metadata record for: HIT-COVID, a global database tracking public health interventions to COVID-19

This dataset contains key characteristics about the data described in the Data Descriptor HIT-COVID, a global database tracking public health interventions to COVID-19. Contents: 1. human readable metadata summary table in CSV format 2. machine readable metadata file in JSON forma