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Power characteristics of multiple inductively coupled RF discharges inside a metallic chamber

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Plasma Science and Technology 2022年第1期24卷 70-76页

作者： Dane LOJEN Rok ZAPLOTNIK miran mozetic Alenka VESEL Gregor PRIMC Department of Surface Engineering Jozef Stefan InstituteJamova cesta 391000 LjubljanaSlovenia Jozef Stefan International Postgraduate School Jamova cesta 391000 LjubljanaSlovenia Plasmadis Ltd. Teslova ulica 301000 LjubljanaSloven

The characteristics of an innovative configuration of multiple radiofrequency(RF)coils immersed in a large metallic chamber are ***-cooled copper coils were mounted within the slits of double-walled glass tubes,which were immersed into a stainless-steel *** coils were connected in parallel to a gamma-type matching network,powered by an RF generator operating at industrial *** leads enabled optimisation of the line impedances and thus uniformly distributed RF power across the four *** from E-to H-mode and vice versa were measured for all coils at various oxygen pressures between 5 and 25 Pa.A uniform plasma was sustained in H-mode at the absorbed power threshold,which increased monotonously with increasing pressure in the metallic *** coils exhibit the same E-to H-mode transition hysteresis and need the same amount of power for transitioning from E-to *** setup enables maintaining uniform plasma in virtually any number of coils at high power without the risk of arcing and without the dead volume typical for a classical configuration with coils mounted outside the metallic chamber.

关键词： inductively coupled plasma large-area plasma E-to H-mode transition high power

Influence of donor age on liver transplantation outcomes: A multivariate analysis and comparative study

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World Journal of Gastrointestinal Surgery 2024年第2期16卷 331-344页

作者： miran Bezjak Ivan Stresec Branislav Kocman Stipislav Jadrijević Tajana Filipec Kanizaj Miro Antonijević Bojana Dalbelo Bašić Danko Mikulić Department of Surgery University Hospital MerkurZagreb 10000Croatia Department of Electronics MicroelectronicsComputer and Intelligent SystemsFaculty of Electrical Engineering and ComputingZagreb 10000Croatia Department of Gastroenterology University Hospital MerkurZagreb 10000Croatia Development of Software Nanobit Ltd.Zagreb 10000Croatia

BACKGROUND The growing disparity between the rising demand for liver transplantation(LT)and the limited availability of donor organs has prompted a greater reliance on older liver ***,utilizing livers from elderly donors has been associated with outcomes inferior to those achieved with grafts from younger *** accounting for additional risk factors,we hypothesize that the utili-zation of older liver grafts has a relatively minor impact on both patient survival and graft *** To evaluate the impact of donor age on LT outcomes using multivariate analysis and comparing young and elderly donor *** In the period from April 2013 to December 2018,656 adult liver transplants were performed at the University Hospital *** multivariate Cox propor-tional hazards models were developed to independently assess the significance of donor *** age was treated as a continuous *** approach involved univariate and multivariate analysis,including variable selection and assessment of interactions and ***,to exemplify the similarity of using young and old donor liver grafts,the group of 87 recipients of elderly donor liver grafts(≥75 years)was compared to a group of 124 recipients of young liver grafts(≤45 years)from the *** rates of the two groups were estimated using the Kaplan-Meier method and the log-rank test was used to test the differences between *** Using multivariate Cox analysis,we found no statistical significance in the role of donor age within the constructed *** when retained during the entire model development,the donor age's impact on survival remained insignificant and transformations and interactions yielded no substantial effects on *** insigni-ficance and low coefficient values suggest that donor age does not impact patient survival in our ***,there was no statistical evidence that the five developed models did not adhe

关键词： Liver transplantation Elderly donors Survival analysis Postoperative complications Cox proportional hazard models

RIGHT MEAN FOR THEα-z BURES-WASSERSTEIN QUANTUM DIVERGENCE

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数学物理学报:B辑英文版 2023年第5期43卷 2320-2332页

作者： miran JEONG Jinmi HWANG Sejong KIM Department of Mathematics Chungbuk National UniversityCheongju 28644Korea Department of Mathematics Sungkyunkwan UniversitySuwon 16419Korea

The optimization problem to minimize the weighted sum ofα-z Bures-Wasserstein quantum divergences to given positive definite Hermitian matrices has been *** call the unique minimizer theα-z weighted right mean,which provides a new non-commutative version of generalized mean(H?lder mean).We investigate its fundamental properties,and give many interesting operator inequalities with the matrix power mean including the Cartan ***,we verify the trace inequality with the Wasserstein mean and provide bounds for the Hadamard product of two right means.

关键词： Rényi relative entropy Bures-Wasserstein quantum divergence right mean power mean Cartan mean Wasserstein mean

GAJA:3D CAD methodology for developing a parametric system for the automatic(re)modeling of the cutting components of compound washer dies

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第5期14卷 327-340页

作者： David POTONIK Bojan DOLAK miran ULBIN Emo-orodjarna d.o.o. Bezigrajska 10SI-3000CeljeSlovenia Faculty of Mechanical Engineering University of MariborSmetanova 17SI-2000MariborSlovenia

For the designing of cutting-dies is a complex and experience-based process,it is poorly supported by conventional 3D CAD ***,the majority of design activities,including the(re)modeling of those cutting die-components that are directly responsible for performing shaping operations on a sheet-metal stamping part,traditionally still need to be carried-out repetitively,separately,and manually by the *** eliminate some of these drawbacks and upgrade the capabilities of conventional 3D CAD software,this paper proposes a new methodology for the development of a parametric system capable of automatically performing a(re)modeling process of compound washer dies' *** presented methodology integrates CATIA V5 built-in modules,including Part Design,Assembly Design and Knowledge Advisor,publication mechanism,and compound cutting die-design *** system developed by this methodology represents an 'intelligent' assembly template composed of two modules GAJA1 and GAJA2,***1 is responsible for the direct input of the die-design problem regarding the shape,dimensions and material of the stamping part,its extraction in the form of geometric features,and the transferring of relevant design parameters and features to the module ***2 interprets the current values for the input parameters and automatically performs the modeling process of cutting die-components,using die-design knowledge and the company's internal design and manufacturing *** results show that this system significantly shortens the modeling-time for cutting the die-components,improves the modeling-quality,and enables the training of inexperienced designers.

关键词： Parametric modeling Cutting dies Computer-aided systems Knowledge-based design

Efficient desulfurization of gasoline fuel using ionic liquid extraction as a complementary process to adsorptive desulfurization

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Petroleum Science 2015年第2期12卷 330-339页

作者： N.Farzin Nejad A.A.miran Beigi Petroleum Refining Technology Development Division Research Institute of Petroleum Industry

The extractive desulfurization of a model gaso- line containing several alkyl thiols and aromatic thiophenic compounds was investigated using two imidazolium-based ionic liquids （ILs）, 1-butyl-3-methylimidazolium tetrachloroaluminate, and 1-octyl-3-methylimidazolium te- trafluoroborate, as extractants. A fractional factorial design of experiments was employed to evaluate the effects and possible interactions of several process variables. Analysis of variance tests indicated that the number of extraction steps and the IL/gasoline volume ratio were of statistically highly significant, but none of the interactions were significant. The results showed that the desulfurization efficiency of the model gasoline by the ILs could reach 95.2 % under the optimal conditions. The optimized conditions were applied to study the extraction of thiophenic compounds in model gasoline and several real gasoline samples; the following order was observed in their separation： benzothio- phenc 〉 thiophcne 〉 3-methylthiophene 〉 2-methylthiophene, with 96.1% removal efficiency for benzothiophene. The IL extraction was successfully applied as a complementary process to the adsorptive desulfurization with acti- vated Raney nickel and acetonitrile solvent. The results indicated that the adsorptive process combined with IL extraction could provide high efficiency and selectivity, which can be regarded as a promising energy efficient desulfurization strategy for production of low-sulfur gasoline.

关键词： Liquid-liquid extraction Experimentaldesign Adsorptive desulfurization Gasoline Thiopheniccompounds

A data-mining approach to biomarker identification from protein profiles using discrete stationary wavelet transform

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第11期9卷 863-870页

作者： Hussain MONTAZERY-KORDY Mohammad Hossein miran-BAYGI Mohammad Hassan MORADI Department of Electrical and Computer Engineering Tarbiat Modares University Faculty of Biomedical Engineering Amir Kabir University of Technology

Objective: To develop a new bioinformatic tool based on a data-mining approach for extraction of the most infor- mative proteins that could be used to find the potential biomarkers for the detection of cancer. Methods: Two independent datasets from serum samples of 253 ovarian cancer and 167 breast cancer patients were used. The samples were examined by surface- enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF MS). The datasets were used to extract the informative proteins using a data-mining method in the discrete stationary wavelet transform domain. As a dimensionality re- duction procedure, the hard thresholding method was applied to reduce the number of wavelet coefficients. Also, a distance measure was used to select the most discriminative coefficients. To find the potential biomarkers using the selected wavelet coefficients, we applied the inverse discrete stationary wavelet transform combined with a two-sided t-test. Results: From the ovarian cancer dataset, a set of five proteins were detected as potential biomarkers that could be used to identify the cancer patients from the healthy cases with accuracy, sensitivity, and specificity of 100%. Also, from the breast cancer dataset, a set of eight proteins were found as the potential biomarkers that could separate the healthy cases from the cancer patients with accuracy of 98.26%, sensitivity of 100%, and specificity of 95.6%. Conclusion: The results have shown that the new bioinformatic tool can be used in combination with the high-throughput proteomic data such as SELDI-TOF MS to find the potential biomarkers with high discriminative power.

关键词： Proteomics Discrete stationary wavelet transform Data mining Feature selection Biomarker Cancer classification

Sensor fusion-based approach for the field robot localization on Rovitis 4.0 vineyard robot

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International Journal of Agricultural and Biological Engineering 2022年第6期15卷 91-95页

作者： Jurij Rakun Matteo Pantano Peter Lepej miran Lakota Faculty of Agriculture and Life Sciences University of MariborPivola 102311 HočeSlovenia Az.Agricola Giorgio Pantano Via stradelle 40CandianaItaly VISTION d.o.o. Kolodvorska ulica 24Slovenska BistricaSlovenia

This study proposed an approach for robot localization using data from multiple low-cost sensors with two goals in mind,to produce accurate localization data and to keep the computation as simple as *** approach used data from wheel odometry,inertial-motion data from the Inertial Motion Unit(IMU),and a location fix from a Real-Time Kinematics Global Positioning System(RTK GPS).Each of the sensors is prone to errors in some situations,resulting in inaccurate *** odometry is affected by errors caused by slipping when turning the robot or putting it on slippery *** IMU produces drifts due to vibrations,and RTK GPS does not return to an accurate fix in(semi-)occluded *** of these sensors is accurate enough to produce a precise reading for a sound localization of the robot in an outdoor *** solve this challenge,sensor fusion was implemented on the robot to prevent possible localization *** worked by selecting the most accurate readings in a given moment to produce a precise pose *** evaluate the approach,two different tests were performed,one with robot localization from the robot operating system(ROS)repository and the other with the presented Field Robot *** first did not perform well,while the second did and was evaluated by comparing the location and orientation estimate with ground truth,captured by a hovering drone above the testing ground,which revealed an average error of 0.005 m±0.220 m in estimating the position,and 0.6°±3.5°when estimating *** tests proved that the developed field robot localization is accurate and robust enough to be used on a ROVITIS 4.0 vineyard robot.

关键词： localization odometry IMU RTK GPS vineyard robot sensors fusion ROS precision farming

Prognostic value of additional pathological variables for longterm survival after curative resection of rectal cancer

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World Journal of Gastroenterology 2006年第28期12卷 4565-4568页

作者： Bojan Krebs miran Kozelj Rajko Kavalar Borut Gajzer Eldar M Gadzijev Department for abdominal surgery Teaching Hospital MariborLjubljanska ulica 52000 MariborSlovenia Department for abdominal surgery Teaching Hospital MariborLjubljanska ulica 52000 MariborSlovenia Department of PathologyTeaching Hospital MariborLjubljanska ulica 52000 MariborSlovenia

AIM： To evaluate the prognostic value of some pathological variables in rectal cancer survival. METHODS： 247 patients who underwent curative resection of rectal cancer were included in the study. The influence on survival of five pathological variables （histopathological tumor type, histopathological tumor grade differentiation, blood vessel invasion, perineural invasion and lymphatic invasion） was assessed using statistical analyses. RESULTS： Overall 5-year survival was 71.2%. Univariate analysis of all tested variables showed an effect on survival but only the effect of lymphatic invasion was statistically significant. At stages three and four it had a negative effect on survival （P = 0.0212）. Lymphatic invasion also significantly affected cancer related survival in multivariate analysis at stages three and four. At lower stages （stage 0, stage 1 and stage 2） multivariate analysis showed a negative effect of perineural invasion on cancer related survival. CONCLUSION： Patients with lymphatic and perineural invasion have a higher risk for rectal cancer related death after curative resection. Examination of these variables should be an important step in detecting patients with a poorer prognosis.

关键词： Rectum Cancer Prognosis Survival Lymphatic invasion Perineural invasion

Studying pressure sores through illuminant invariant assessment of digital color images

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第8期11卷 598-606页

作者： Sahar MOGHIMI Mohammad Hossein miran BAYGI Giti TORKAMAN Ehsanollah KABIR Ali MAHLOOJIFAR Narges ARMANFARD Department of Electrical Engineering Tarbiat Modares University Department of Physical Therapy Tarbiat Modares University

Methods for pressure sore monitoring remain both a clinical and research *** methodologies could assist physicians in developing prompt and effective pressure sore *** this paper a technique is introduced for the assessment of pressure sores in guinea pigs,using captured color *** were artificially induced,utilizing a system particularly developed for this *** images were obtained from the suspicious region in days 3 and 7 post-pressure sore *** segments of the color images were divided and labeled into three classes,based on their severity *** quantitative analysis,a color based texture model,which is invariant against monotonic changes in illumination,is *** texture model has been developed based on the local binary pattern *** segments were classified,using the texture model and its features as inputs to a combination of neural *** method is capable of discriminating tissue segments in different stages of pressure sore generation,and therefore can be a feasible tool for the early assessment of pressure sores.

关键词： Local binary pattern (LBP) Automatic assessment Neural networks Color based texture model Pressure sores Digital color images