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Comparison of Microstructures and Properties Obtained After Different Heat Treatment Strategies of High Strength Low Alloyed Steel

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Journal of Iron and Steel Research International 2011年第S1期18卷 427-431页

作者： Kuerová Ludmila Jirková Hana Hauserová Daniela masek bohuslav FORTECH UWB in PilsenUniverzitni 2230614PilsenCzech Republic Comtes FHT a.s. Prumyslová 995334 41 DobranyCzech Republic

The influence of different heat treatment strategies on the microstructure and properties of 42SiCr steel was *** compare the benefit of innovative treatment methods with more conventional ones,several strategies based on a new quenching and partitioning (Q-P) process were designed together with several strategies using more traditional quenching and tempering *** combinations of mechanical properties were obtained with ultimate strengths in the range of 1818-2120 MPa and ductility between 10% and 24%.Resulting microstructures were martensitic with 0-12% of retained austenite and they were analyzed by laser scanning confocal microscopy,transmission electron microscopy and X-ray diffraction phase analysis.

关键词： Q-P processing quenching and tempering retained austenite

Proposed EU legislation to force changes in sewage sludge disposal:A case study

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Frontiers of Chemical Science and Engineering 2018年第4期12卷 660-669页

作者： Vojtech Turek bohuslav Kilkovsky Zdenek Jegla Petr Stehlik Institute of Process Engineering Faculty of Mechanical EngineeringBmo University of Tectmology61669 BmoCzech Republic

The consequences of changes planned in the European Union legislation relevant to the disposal of sewage sludges are discussed. A specific municipal waste water treatment plant is analyzed in terms of drying and subsequent combustion or pyrolysis of the produced stabilized sludge, and the respective net energy balances are carried out. A simplified economic analysis of the two disposal options is presented, which suggest that combustion of the sludge would be economically infeasible while pyrolysis of the sludge in a modular, self-sufficient container unit can bring a small financial benefit due to the selling of the produced phosphorus-rich biochar.

关键词： sewage sludge drying combustion pyrolysis

FOLFOX/FOLFIRI pharmacogenetics:The call for a personalized approach in colorectal cancer therapy

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World Journal of Gastroenterology 2014年第30期20卷 10316-10330页

作者： Beatrice Mohelnikova-Duchonova bohuslav Melichar Pavel Soucek Department of Toxicogenomics National Institute of Public Health10042 PragueCzech Republic Department of Oncology Palacky University Medical School and Teaching Hospital77525 OlomoucCzech Republic

While 5-fluorouracil used as single agent in patients with metastatic colorectal cancer has an objective response rate around 20%,the administration of combinations of irinotecan with 5-fluorouracil/folinic acid or oxaliplatin with 5-fluorouracil/folinic acid results in significantly increased response rates and improved ***,the side effects of systemic therapy such as myelotoxicity,neurotoxicity or gastrointestinal toxicity may lead to life-threatening complications and have a major impact on the quality of life of the ***,biomarkers that would be instrumental in the choice of optimal type,combination and dose of drugs for an individual patient are urgently *** efficacy and toxicity of anticancer drugs in tumor cells is determined by the effective concentration in tumor cells,healthy tissues and by the presence and quantity of the drug *** active in drug metabolism and transport represent important determinants of the therapeutic *** aim of this review was to summarize published data on associations of gene and protein expression,and genetic variability of putative biomarkers with response to therapy of colorectal cancer to 5-fluorouracil/leucovorin/oxaliplatin and 5-fluorouracil/leukovorin/irinotecan *** in the knowledge identified by this review may aid the design of future research and clinical trials.

关键词： Colorectal cancer Chemotherapy 5-Fluorouracil Oxaliplatin Irinotecan

Crucial role of charge transporting layers on ion migration in perovskite solar cells

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Journal of Energy Chemistry 2020年第8期29卷 132-137,I0005页

作者： Abasi Abudulimu Lang Liu Guilin Liu Nijiati Aimaiti bohuslav Rezek Qi Chen Faculty of Electrical Engineering Czech Technical UniversityPragueCzechia School of Materials and Engineering Beijing Institute of TechnologyBeijing 102488China School of Science Jiangnan UniversityWuxi 214122JiangsuChina IMDEA Nanociencia Madrid 28049Spain

The device preconditioning dependent hysteresis and the consequential performance degradation hinder the actual performance and stability of the perovskite solar cells. Ion migration and charge trapping in the perovskite with large contribution from grain boundaries are the most common interpretations for the hysteresis. Yet, the high performing devices often include intermediate hole and electron transporting layers, which can further complicate the dynamical process in the device. Here, by using Kelvin Probe Force Microscopy and Confocal Photoluminescence Microscopy, we elucidate the impact of chargetransporting layers and excess MAI on the spatial and temporal variations of the photovoltage on the MAPbI3-based solar cells. By studying the devices layer by layer, we found that the light-induced ion migration occurs predominantly in the presence of an imbalanced charge extraction in the solar cells, and the charge transporting layers play crucial role in suppressing it. Careful selection and processing of the electron and hole-transporting materials are thus essential for making perovskite solar cells free from the ion migration effect.

关键词： Perovskite solar cells Ion migration KPFM Charge transporting material

Structure of miniature components from steel produced by forming in semi-solid state

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中国有色金属学会会刊：英文版 2010年第S3期20卷 1037-1041页

作者： B.masek D.AISMAN M.BEHULOVA H.JIRKOVA The Research Centre of Forming Technology University of West BohemiaUniverzitni 22P.O.Box 314306 14 PilsenCzech Republic Faculty of Materials Science and Technology in Trnava Slovak University of Technology in BratislavaPaulinska 16917 24 TrnavaSlovak Republic

To obtain new unconventional structures with specific mechanical and physical properties is possible not only by the development of new types of materials but also by treatment of conventional materials using unconventional innovative technological *** of these technologies is the forming in semi-solid state involving rapid solidification of miniature components from *** of such components is complicated by a number of technical *** explain phenomena of the process and structure development,the production of miniature components from the tool steel X210Cr12 difficult to form was experimentally *** structure of this originally ledeburite steel consisted of 95 % of metastable austenite after the *** austenite was located particularly in globular and polygonal grains while the remaining interspaces were filled by lamellar *** detected high stability of extremely high fraction of metastable austenite was tested under different conditions of thermal exposition and mechanical loading.

关键词： semi-solid state semi-solid forming rapid cooling metastable austenite mini-thixoforming

Automatic sub-pixel co-registration of Landsat-8 Operational Land Imager and Sentinel-2A Multi-Spectral Instrument images using phase correlation and machine learning based mapping

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International Journal of Digital Earth 2017年第12期10卷 1253-1269页

作者： Sergii Skakun Jean-Claude Roger Eric F.Vermote Jeffrey G.masek Christopher O.Justice Department of Geographical Sciences University of MarylandCollege ParkMDUSA NASA Goddard Space Flight Center Code 619 GreenbeltMDUSA NASA Goddard Space Flight Center Code 618 GreenbeltMDUSA

This study investigates misregistration issues between Landsat-8/Operational Land Imager and Sentinel-2A/Multi-Spectral Instrument at 30 m resolution,and between multi-temporal Sentinel-2A images at 10 m resolution using a phase-correlation approach and multiple transformation ***-registration of 45 Landsat-8 to Sentinel-2A pairs and 37 Sentinel-2A to Sentinel-2A pairs were *** correlation proved to be a robust approach that allowed us to identify hundreds and thousands of control points on images acquired more than 100 days ***,misregistration of up to 1.6 pixels at 30 m resolution between Landsat-8 and Sentinel-2A images,and 1.2 pixels and 2.8 pixels at 10 m resolution between multi-temporal Sentinel-2A images from the same and different orbits,respectively,were *** non-linear random forest regression used for constructing the mapping function showed best results in terms of root mean square error(RMSE),yielding an average RMSE error of 0.07±0.02 pixels at 30 m resolution,and 0.09±0.05 and 0.15±0.06 pixels at 10 m resolution for the same and adjacent Sentinel-2A orbits,respectively,for multiple tiles and multiple conditions.A simpler 1st order polynomial function(affine transformation)yielded RMSE of 0.08±0.02 pixels at 30 m resolution and 0.12±0.06(same Sentinel-2A orbits)and 0.20±0.09(adjacent orbits)pixels at 10 m resolution.

关键词： Sub-pixel co-registration phase correlation misregistration Landsat-8 Sentinel-2 machinelearning random forest

Role of interleukin-6 in Barrett's esophagus pathogenesis

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World Journal of Gastroenterology 2013年第15期19卷 2307-2312页

作者： Katerina Dvorak bohuslav Dvorak Department of Cellular and Moleculart Medicine The University of ArizonaTucsonAZ 85724United States Department of Pediatrics and Steele Children's Research Center The University of ArizonaTucsonAZ 85724United States

Barrett's esophagus (BE) is a metaplastic lesion of the distal esophagus arising as a consequence of chronic gastroesophageal reflux disease. Multiple studies show that BE is associated with increased risk of esophageal adenocarcinoma (EAC). Epidemiological studies and animal models demonstrate that chronic inflammation triggered by repeated exposure to refluxate predisposes to the development of BE and EAC. The chronic inflammation is associated with cytokine alterations. Interleukin 6 (IL-6) is a cytokine that stimulates cell proliferation and apoptosis resistance is frequently increased in different cancers. Importantly, IL-6 and transcriptional factor signal transducer and activator of transcription 3 (STAT3) that is activated by IL-6 are also increased in BE and EAC. This review critically appraises the role of IL-6/STAT3 pathway in progression of BE to EAC from the published evidence currently available.

关键词： Barrett’s esophagus Interleukin 6 Bile acids Inflammation Apoptosis

Metastases of esophageal carcinoma to skeletal muscle:Single center experience

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World Journal of Gastroenterology 2012年第35期18卷 4962-4966页

作者： Jan Cincibuch Miroslav Myslivecek bohuslav Melichar estmír Neoral Iva Metelková Michaela Zezulová Hana Procházková-tudentová Patrik Flodr Miloslava Zlevorová René Aujesky Karel Cwiertka Department of Oncology Palacky University Medical School and Teaching Hospital Department of Nuclear Medicine Palacky University Medical School and Teaching Hospital 1st Department of Surgery Palacky University Medical School and Teaching Hospital Department of Pathology Palacky University Medical School and Teaching Hospital

Metastases of esophageal carcinoma to the skeletal muscle are rare,but the incidence may be increasing because of better diagnosis resulting from widespread use of positron emission tomography/computed tomography(PET/CT).A cohort of 205 patients with esophageal carcinoma treated at our center who had PET/CT between 2006 and 2010 was retrospectively evaluated for the presence of skeletal muscle *** patients had skeletal muscle metastases of esophageal carcinoma,including two patients with squamous cell *** another patient with squamous cell carcinoma of the esophagus and synchronous skeletal muscle metastases,muscle metastases were subsequently shown to be related to second primary pancreatic *** all cases,skeletal muscle metastases were the first manifestation of systemic *** three patients palliation was obtained with the combination of external beam radiation therapy,systemic chemotherapy or surgical *** muscle metastases are a rare complication of esophageal carcinoma.

关键词： Drug therapy Esophageal neoplasms Muscle Skeletal Positron-emission tomography Radiotherapy

Biology Inspired Image Segmentation using Methods of Artificial Intelligence

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Journal of Software Engineering and Applications 2012年第12期5卷 172-174页

作者： Radim Burget Vaclav Uher Jan masek Departmentof Telecommunication Brno University of TechnologyBrno Czech Republic

In recent years,many efforts have been devoted to image segmentation. Although for a man general image segmentation is considered an easy task, for computers it is still considered to be difficult, computationally intensive and still unresolved task. This work presents an innovative algorithm combining theory of artificial intelligence and knowledge of human eye anatomy. The resulting algorithm has not ambitions to be universal like human brain but can be trained and perform on selected domain. The effectiveness of the algorithm is demonstrated on the selected examples.

关键词： Image processing Image mining Feature extraction Data mining