Molecular-level interplays during co-pyrolysis of cellulose and thermoplastics

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Non-covalent catalytic and inhibitory interactions between cellulose and lignin during whole biomass fast pyrolysis

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Subcell Modelling of Frequency Dependent Thin Layers in the FDTD Method

A subcell modelling technique for frequency dependent thin layers in finite-difference time-domain (FDTD) method is introduced. The proposed method is based on the application of the integral form of the Maxwell-Ampere equation and the solution of a set of auxiliary equations to advance the field components. It has the ability to handle one or several frequency dependent thin layers embedded in a frequency dependent medium without solving high-order differential equations. To validate our proposed method, we compare the obtained results with analytical solutions and with numerical references in both time domain and frequency domain

Myocardial infarction secondary to unintentional ingestion of hydrogen peroxide

Ingestion of acid-containing household products, either accidentally or as a suicide attempt, is a common form of intoxication. A clear and odorless liquid, hydrogen peroxide is an oxidizing agent found in most households and many industrial environments. Cardiovascular manifestations of hydrogen peroxide ingestion are extremely rare. Here we report a 60 year-old woman with acute inferolateral myocardial infarction (MI) after hydrogen peroxide ingestion, who had no history of coronary artery disease. Physicians dealing with hydrogen peroxide ingestion in the emergency department should be aware of the probability of MI and obtain an electrocardiogram, even if the patient has no cardiac complaint. (Cardiol J 2012; 19, 1: 86–88

FDTD Voxels-in-Cell method with Debye media

The Voxels-in-Cell (VIC) method was recently introduced for reducing the computational cost of the finitedifference time-domain (FDTD) method with objects composed with dielectric voxels. It relies on using a FDTD cell larger than the voxels, with eight or more voxels in each VIC cell. With the objective of using it in bio-electromagnetics applications, this paper extends the VIC method to voxels filled with Debye media. Beside the theory and the algorithm of the extended VIC method, several numerical experiments are reported with a canonical object and with human body phantoms composed with voxels. The experiments show that the accuracy of the method is preserved while large reductions of the computational requirements can be achieved, especially the computational time can be reduced by about one order of magnitude.EU Horizon 2020 Research and Innovation Program through Marie Sklodowska- Curie Action under Grant 101066571.Spanish MICINN EU FEDER Projects under Grant PID2019.106120RB.C33 and Grant PID2022- 137495OB-C31

Accelerating Finite-Difference Time-Domain (FDTD) Solvers using Voxels-in-Cell Method

EU Horizon 2020 Research and Innovation Programme under Marie Sklodowska-Curie Action under Grant 101066571, HECATE and by the Spanish National Project PID2019.106120RB.C33, PID2022-137495OB-C31 and FEDER Project B-TIC-700-UGR20

An efficient color detection in RGB space using hierarchical neural network structure

TUBITAK; IEEE2011 International Symposium on INnovations in Intelligent SysTems and Applications, INISTA 2011 -- 15 June 2011 through 18 June 2011 -- Istanbul-Kadikoy -- 85879Color detection is generally a primary stage in most of the image processing application, if the application is based on the color information, such as road sign detection, face detection, skin color detection, object detection and object tracking etc. As the performance of subsequent modules in an image processing application is adversely affected by the previous modules, the accuracy of color detection with a high performance inevitably becomes crucial in some applications. This paper introduces a method for an efficient color detection in RGB space using an ensemble of experts in hierarchical structure. In this structure, a set of experts is assigned to evaluate R, G, B components of a pixel and then constructs a degree of membership to the set of predefined class of colors for the given pixel. Then a master neural network constructs its final decision based on the membership probabilities provided by the set of experts. Qualitative and quantitative evaluations of the results show that the proposed hierarchical structure of neural networks is superior over the conventional neural network classifier in color detection. © 2011 IEEE

Assessment of cardiac involvement by non-invasive electrophysiological parameters in patients with rheumatoid arthritis

Amaç: Romatoid artrit (RA)’te hem hastalığa ve hem de kullanılan ilaçlara bağlı olarak kalp tutulumu olabilmekte ve çoğunlukla sessiz seyretmektedir. Bu çalışmada RA’li hastalarda non-invaziv elektrofi zyolojik parametreler aracılığıyla kardiyak etkilenimin varlığı araştırıldı. Gereç ve yöntemler: Bu çalışmaya benzer yaşta 49 RA’li hasta ve 28 sağlıklı birey kontrol grubu olarak alındı. Tüm bireyler klinik ve laboratuar parametreleri açısından değerlendirildi ve 24 saatlik Holter elektrokardiografi k monitorizasyonları yapıldı. Bulgular: Maksimum QT aralığı kontrollere göre RA’lı hastalarda daha düşük iken (p0.05). Sonuç: Romatoid artritli hastalarda QT dispersiyonu gibi nonivaziv parametrelerin geleneksel risk faktörlerine ek olarak kardiyovasküler riskin değerlendirilmesi ve ani kardiyak ölüm riskinin öngörülmesinde ılımlı bir rolü olabilir. Fakat daha kesin bir yargı için farklı ve daha fazla sayıda içeren, prospektif ve uzun süreli çalışmalara gereksinim vardırObjective: Cardiac involvement occurs due to the disease itself and secondary to the used drugs, and commonly develops silent in rheumatoid arthritis (RA). In this study, it was investigated the presence of cardiac involvement by non-invasive electrophysiological parameters Materials and Methods: 49 patients with RA and agematched 28 healthy subjects as control group were enrolled to this study. Clinical and laboratory parameters of all subjects were assessed and 24-hour electrocardiographic Holter monitoring were performed. Results: Minimum, maximum and mean heart rate were signifi cantly higher (p<0.05, p<0.01, p<0.01, respectively), while maximum QT interval were signifi cantly lower in patients with RA compared to controls (p<0.05). P wave parameters (P maximum, P minimum and P dispersion) were similar both groups. In correlation analysis, there was only signifi cant negative association between erythrocyte sedimentation rate and corrected QT dispersion (r=0.317, p<0.05). However, it was not found any association between P wave and QT parameters and other anyone of clinical or laboratory parameters. Conclusion: There is modest role of non-invasive parameters such as QT dispersion in assessment of cardiovascular risk and prediction of sudden cardiac dead risk in addition to the traditional risk factors in patients with RA. However, prospective, larger and long term studies which include different patient groups are needed to obtain more accurate conclusions

Plants and Surgery: The Protective Effects of Thymoquinone on Hepatic Injury—A Systematic Review of In Vivo Studies

Multimodal treatment concepts including liver transplantation for hepatocellular carcinoma (HCC), extended resection methods and neoadjuvant chemotherapy for colorectal liver metastasis significantly improve patients&rsquo; outcome. However, surgery-induced hepatic ischemia-reperfusion injury (IRI) and chemotherapy-associated hepatotoxicity result in hepatocellular damage and compromised liver function. Activation of common key pathways in ischemic liver and hepatotoxic injury results in oxidative stress, inflammatory responses and apoptosis causing organ damage. Controlling liver damage before and during surgery is essential for the postoperative outcome. Nigella sativa has a long tradition as a natural remedy. In the essential oil, Thymoquinone (TQ) was identified as the main component and responsible for most of the therapeutic effects. Therefore, this systematic review aimed to summarize the hepatoprotective effects of TQ and its potential suitability to improve surgical outcome by reducing surgical ischemic injury and hepatotoxicity of neoadjuvant chemotherapy. The key findings can be summarized as TQ having strong antioxidant, anti-inflammatory, antifibrotic, anti-/proapoptotic and anticarcinogenic effects. Almost no side effects were reported irrespective of a large dose range, suggesting a wide therapeutic window. These results give rise to the expectation that TQ could evolve to a novel powerful drug to reduce hepatic injury