100,177 results match your criteria: "Yıldiz Technical University[Affiliation]"

Brain-inspired wiring economics for artificial neural networks.

PNAS Nexus

January 2025

School of Physical Science and Engineering, Tongji University, Shanghai 200092, P. R. China.

Wiring patterns of brain networks embody a trade-off between information transmission, geometric constraints, and metabolic cost, all of which must be balanced to meet functional needs. Geometry and wiring economy are crucial in the development of brains, but their impact on artificial neural networks (ANNs) remains little understood. Here, we adopt a wiring cost-controlled training framework that simultaneously optimizes wiring efficiency and task performance during structural evolution of sparse ANNs whose nodes are located at arbitrary but fixed positions.

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Water pollution, oxidative stress and the emergence of multidrug-resistant bacterial strains are significant global threats that require urgent attention to protect human health. Nanocomposites that combine multiple metal oxides with carbon-based materials have garnered significant attention due to their synergistic physicochemical properties and versatile applications in both environmental and biomedical fields. In this context, the present study was aimed at synthesizing a ternary metal-oxide nanocomposite consisting of silver oxide, copper oxide, and zinc oxide (ACZ-NC), along with a multi-walled carbon nanotubes modified ternary metal-oxide nanocomposite (MWCNTs@ACZ-NC).

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Urethritis is a common condition predominantly caused by sexually transmitted pathogens such as Chlamydia trachomatis, Neisseria gonorrhoeae, and Mycoplasma genitalium. It is not possible to differentiate with certainty between pathogens on the basis of clinical characteristics alone. However, empirical antibiotic therapy is often initiated in clinical practice.

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Redistribution of soil water by mature trees towards dry surface soils and uptake by seedlings in a temperate forest.

Plant Biol (Stuttg)

January 2025

School of Life Sciences, Land Surface-Atmosphere Interactions, Technical University of Munich, Freising, Germany.

Hydraulic redistribution is considered a crucial dryland mechanism that may be important in temperate environments facing increased soil drying-wetting cycles. We investigated redistribution of soil water from deeper, moist to surface, dry soils in a mature mixed European beech forest and whether redistributed water was used by neighbouring native seedlings. In two experiments, we tracked hydraulic redistribution via (1) H labeling and (2) O natural abundance.

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The ovarian oncobiome is subject to increasing scientific focus, but a potential link between bacterial dysbiosis and ovarian carcinogenesis remains controversial. Our primary aim was to characterize the bacterial microbiota in epithelial ovarian cancer samples. Secondarily, we aimed to compare results from the bacterial microbiota in formalin-fixed, paraffin-embedded ovarian tissue samples from 194 patients with epithelial ovarian cancer, fallopian tube tissue samples from 16 patients with serous tubal intraepithelial carcinomas and in benign fallopian tube tissue samples from 25 patients.

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Limited advancements in managing malignant brain tumors have resulted in poor prognoses for glioblastoma (GBM) patients. Standard treatment involves surgery, radiotherapy, and chemotherapy, which lack specificity and damage healthy brain tissue. Boron-containing compounds, such as boric acid (BA), exhibit diverse biological effects, including anticancer properties.

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Background: The cannulation of the internal jugular vein (IJV) is a frequent procedure in critically ill patients. According to the guidelines, real-time ultrasound navigation is recommended. Traditional techniques pose several disadvantages, such as suboptimal needle visualization.

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Parosmia: Pathophysiology and Management.

Curr Allergy Asthma Rep

January 2025

Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden, Dresden, Germany.

Purpose Of Review: Parosmia is a qualitative olfactory disorder in which there is a mismatch between the memory of an odor and the actual experience triggered by an odor. There has been a surge in parosmia-related publications since the COVID-19 pandemic. This review summarizes the latest clinical findings, theories on pathophysiology and potential treatment options.

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Exploring the Correlation of Physiological Stress Signals with Student Exam Performance: A Preliminary Study.

Appl Psychophysiol Biofeedback

January 2025

Department of Biostatistics and Medical Informatics, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey.

Stress responses in real-world settings are less studied compared to controlled laboratory environments, limiting our understanding of their impact on cognitive performance. This study investigates the relationship between physiological stress signals and academic performance using an open-access dataset of 10 students assessed across three exam sessions (Midterm 1, Midterm 2, and Final Exam). Physiological measures, including electrodermal activity (EDA), heart rate (HR), and skin surface temperature (TEMP), along with exam grades, were analyzed using traditional hypothesis testing, bootstrap method, correlation analysis, and regression tree modeling.

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Analysis of radiation oncology integration within general practitioners' daily patient care: a cross-sectional survey in Germany.

Strahlenther Onkol

January 2025

Department of Radiation Oncology, Klinikum rechts der Isar, School of Medicine and Health, Technical, University of Munich (TUM), Ismaninger Str. 22, 81675, Munich, Germany.

Purpose: General practitioners (GPs) play a crucial role in providing interdisciplinary care for radiation oncology patients. This study aims to understand the specific needs and challenges faced by general practitioners in Germany when treating oncology patients.

Methods: A comprehensive web-based questionnaire with 24 items was disseminated to GPs in Germany via email using survio.

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Amyloid fibrils are highly stable misfolded protein assemblies that play an important role in several neurodegenerative and systemic diseases. Although structural information of the amyloid state is now abundant, mechanistic details about the misfolding process remain elusive. Inspired by the Φ-value analysis of protein folding, we combined experiments and molecular simulations to resolve amino-acid contacts and determine the structure of the transition-state ensemble-the rate-limiting step-for fibril elongation of PI3K-SH3 amyloid fibrils.

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We aimed to develop and evaluate Explainable Artificial Intelligence (XAI) for fetal ultrasound using actionable concepts as feedback to end-users, using a prospective cross-center, multi-level approach. We developed, implemented, and tested a deep-learning model for fetal growth scans using both retrospective and prospective data. We used a modified Progressive Concept Bottleneck Model with pre-established clinical concepts as explanations (feedback on image optimization and presence of anatomical landmarks) as well as segmentations (outlining anatomical landmarks).

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Titanium alloy is known for its low thermal conductivity, small elastic modulus, and propensity for work hardening, posing challenges in predicting surface quality post high-speed milling. Since surface quality significantly influences wear resistance, fatigue strength, and corrosion resistance of parts, optimizing milling parameters becomes crucial for enhancing service performance. This paper proposes a milling parameter optimization method utilizing the snake algorithm with multi-strategy fusion to improve surface quality.

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Background: Flail chest (FC) injuries are segmental osseous injuries of the thorax that typically result from high-energy blunt trauma and regularly occur in multiple trauma (MT) patients. FC injuries are associated with paradoxical chest wall movements and, thus, have a high risk of respiratory insufficiency or even death. An increasing number of studies recommend an early surgical stabilization of FC injuries, but a definite trigger that would indicate surgery has, thus far, not been identified.

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Adoptive cell therapy (ACT) using natural killer (NK) cells has emerged as a promising therapeutic strategy for acute myeloid leukemia (AML), addressing challenges such as chemotherapy resistance and high relapse rates. Over the years, clinical trials and studies have explored various sources of NK cells, including ex vivo expanded NK cell lines, CAR-NK cells, peripheral blood-derived NK cells, and umbilical cord blood-derived NK cells. These therapies have demonstrated varying degrees of therapeutic efficacy, ranging from transient anti-leukemia activity to sustained remission in select patient groups.

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Identifying the parameters of a solar photovoltaic (PV) model optimally, is necessary for simulation, performance assessment, and design verification. However, precise PV cell modelling is critical for design due to many critical factors, such as inherent nonlinearity, existing complexity, and a wide range of model parameters. Although different researchers have recently proposed several effective techniques for solar PV system parameter identification, it is still an interesting challenge for researchers to enhance the accuracy of the PV system modelling.

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Contribution of hypoxia-inducible factor 1alpha to pathogenesis of sarcomeric hypertrophic cardiomyopathy.

Sci Rep

January 2025

Department of Congenital Heart Defects and Pediatric Cardiology, German Heart Center Munich, TUM University Hospital, School of Medicine & Health, Technical University of Munich, Munich, Germany.

Hypertrophic cardiomyopathy (HCM) caused by autosomal-dominant mutations in genes coding for structural sarcomeric proteins, is the most common inherited heart disease. HCM is associated with myocardial hypertrophy, fibrosis and ventricular dysfunction. Hypoxia-inducible transcription factor-1α (Hif-1α) is the central master regulators of cellular hypoxia response and associated with HCM.

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A new Ru(II) complex featuring a novel amino-di(N-heterocyclic carbene) CNC pincer ligand, CNC-RuCl(CO) (Ru-1), has been developed and characterised in depth. Ru-1 forms an efficient and durable catalytic formic acid dehydrogenation system in combination with the ionic liquid 1-ethyl-3-methylimidazolium diethylphosphate (EMIM PO(OEt)).

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Phase-contrast micro-tomography ([Formula: see text]CT) with synchrotron radiation can aid in the differentiation of subtle density variations in weakly absorbing soft tissue specimens. Modulation-based imaging (MBI) extracts phase information from the distortion of reference patterns, generated by periodic or randomly structured wavefront markers (e.g.

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Lutein and Zeaxanthin: Source, Extraction, Stability, Bioactivity, and Functional Food Applications.

Curr Pharm Biotechnol

January 2025

Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia.

Nature has been acknowledged as a fundamental source of diverse bioactive molecules. Among natural carotenoids, lutein, zeaxanthin, and their oxidative metabolites are specifically deposited in the macular region of living organisms. Lutein and zeaxanthin are carotenoids primarily found in green leafy vegetables, eggs, and various fruits.

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Formation of acrylamide in commercially available plant-based meat alternatives during domestic cooking.

Food Addit Contam Part A Chem Anal Control Expo Risk Assess

January 2025

National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark.

The formation and occurrence of acrylamide in carbohydrate-rich foods has been extensively studied over the course of the past few decades. However, the emergence of plant-based meat alternatives presents a new challenge in this field. The aim of this study was to evaluate the levels of acrylamide in commercially available plant-based meat alternatives before and after heat treatment.

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In recent years, scientific research has increasingly focused on the relationship between parents' mobile phone usage and parenting. As smartphones have become pervasive among parents, concerns have arisen regarding how this usage might influence parenting practices and well-being. Therefore, studies that examine the relationship between parents' technology usage-particularly smartphone usage-and their well-being and parenting practices are of significant value.

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The relationships between body satisfaction, problematic smartphone use, sleep deprivation and psychological well-being have been examined with cross-sectional methods. However, the lack of any longitudinal study in which these variables were examined together made it necessary to conduct this study. In this study, we tested whether problematic smartphone use and sleep deprivation serially mediate the relationship between body satisfaction and psychological well-being.

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