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Baseline moderate-range albuminuria is associated with protection against severe COVID-19 pneumonia

World Journal of Diabetes 2022年第12期13卷 1154-1167页

作者： Amir Bashkin Mona Shehadeh Lina Shbita Kamil Namoura Ronza Haiek Elena Kuyantseva yousef boulos Orly Yakir Etty Kruzel-Davila Department of Diabetes Endocrinologyand MetabolismGalilee Medical CenterNahariya 2210001Israel Azrieli Faculty of Medicine Bar-Ilan UniversityZefat 1311502Israel Clinical Laboratories Division Clinical Biochemistry and Endocrinology LaboratoryGalilee Medical CenterNahariya 2210001Israel Internal Medicine A Galilee Medical CenterNahariya 2210001Israel Statistical Analysis Division Galilee Medical CenterNahariya 2210001Israel Department of Nephrology Galilee Medical CenterNahariya 2210001Israel

BACKGROUND Diabetes mellitus is considered a leading contributor to severe coronavirus disease 2019(COVID-19).AIM To characterize differences between hospitalized diabetic patients with vs without COVID-19,and parameters associated with COVID-19 severity for *** This case-control study included 209 patients with type 2 diabetic mellitus hospitalized at the Galilee Medical Center(Nahariya,Israel)and recruited between September 2020 and May 2021,65 patients with COVID-19 infection in dedicated wards and 144 COVID-19-negative patients in internal medicine wards hospitalized due to other *** parameters-including age,type of antiglycemic medications,presence of retinopathy,smoking history,body mass index(BMI),glycosylated hemoglobin,maximum neutrophil:lymphocyte ratio(NLR_(max)),C-reactive protein(CRP),estimated glomerular filtration rate(eGFR),and albumin(blood and urine)-were compared between the two primary patient groups,and then between COVID-19-negative patients hospitalized due to infectious vs non-infectious ***,we explored which parameters were associated with severe COVID-19 *** COVID-19-negative patients were older(63.9±9.9 vs 59.8±9.2,P=0.005),and had longer duration of diabetes(P=0.031),lower eGFR(P=0.033),higher albumin(P=0.026),lower CRP(P<0.001),greater smoking prevalence(P<0.001),and more baseline albuminuria(54.9%vs 30.8%,P=0.005)at admission;70%of COVID-19 patients with albuminuria had moderate-range albuminuria(albumin:creatinine 30-300 mg/g).Most of the patients with albuminuria had chronic kidney disease stage II(CKD II).Oral antiglycemic therapies were not significantly different between the two *** logistic regression showed that higher BMI was significantly associated with severe COVID-19(OR 1.24,95%CI:1.01-1.53,P=0.04),as was higher NLR_(max)(OR 1.2,95%CI:1.06-1.37,P=0.005).Surprisingly,pre-hospitalization albuminuria,mostly moderate-range,was associated with reduced risk(OR

关键词： Diabetes mellitus COVID-19 Albuminuria Severity Chronic kidney disease Immunomodulation

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Congruent Feature Selection Method to Improve the Efficacy of Machine Learning-Based Classification in Medical Image Processing

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 357-384页

作者： Mohd Anjum Naoufel Kraiem Hong Min Ashit Kumar Dutta yousef Ibrahim Daradkeh Department of Computer Engineering Aligarh Muslim UniversityAligarh202002India College of Computer Science King Khalid UniversityAbha61413Saudi Arabia School of Computing Gachon UniversitySeongnam13120Republic of Korea Department of Computer Science and Information Systems College of Applied SciencesAlMaarefa UniversityRiyadh13713Saudi Arabia Department of Computer Engineering and Information College of Engineering in Wadi AlddawasirPrince Sattam bin Abdulaziz UniversityAl-Kharj16273Saudi Arabia

Machine learning(ML)is increasingly applied for medical image processing with appropriate learning *** applications include analyzing images of various organs,such as the brain,lung,eye,etc.,to identify specific flaws/diseases for *** primary concern of ML applications is the precise selection of flexible image features for pattern detection and region *** of the extracted image features are irrelevant and lead to an increase in computation ***,this article uses an analytical learning paradigm to design a Congruent Feature Selection Method to select the most relevant image *** process trains the learning paradigm using similarity and correlation-based features over different textural intensities and pixel *** similarity between the pixels over the various distribution patterns with high indexes is recommended for disease ***,the correlation based on intensity and distribution is analyzed to improve the feature selection ***,the more congruent pixels are sorted in the descending order of the selection,which identifies better regions than the ***,the learning paradigm is trained using intensity and region-based similarity to maximize the chances of ***,the probability of feature selection,regardless of the textures and medical image patterns,is *** process enhances the performance of ML applications for different medical image *** proposed method improves the accuracy,precision,and training rate by 13.19%,10.69%,and 11.06%,respectively,compared to other models for the selected *** mean error and selection time is also reduced by 12.56%and 13.56%,respectively,compared to the same models and dataset.

关键词： Computer vision feature selection machine learning region detection texture analysis image classification medical images

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The impact of alpha-fetoprotein(AFP),child-turcotte-pugh(CTP)score and disease staging on the survival of hepatocellular carcinoma(HCC)patients:a retrospective cohort from single oncology center

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Oncology Research 2025年第1期33卷 149-160页

作者： NASSER MULLA yousef KATIB ASIM M.ALMUGHAMSI DUAA S.ALKHAYAT MOHAMED MOSAAD SAMIR T.ALFOTIH RAWAN ALAOFI Department of Internal Medicine Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of Radiology Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of Surgery Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of Endemic and Infectious Diseases Suez Canal UniversityIsmailia41522Egypt King Salman bin Abdulaziz Medical City Madinah42311Saudi Arabia Prince Mohammed Bin Abdulaziz Hospital Madinah41511Saudi Arabia

Background:Hepatocellular carcinoma(HCC)is the most common cause of cancer-related death in Saudi *** study aimed to investigate the patterns of HCC and the effect of TNM staging,Alfa-fetoprotein(AFP),and Child-Turcotte Pugh(CTP)on patients’overall survival(OS).Methods:A retrospective analysis was conducted on 43 HCC patients at a single oncology center in Saudi Arabia from 2015 to *** patients had to fulfill one of the following criteria:(a)a liver lesion reported as definitive HCC on dynamic imaging and/or(b)a biopsy-confirmed ***:The mean patient age of all HCC cases was 66.8 with a male-to-female ratio of 3.3:*** patients were stratified into two groups:viral HCC(n=22,51%)and non-viral HCC(n=21,49%).Among viral-HCC patients,55%were due to HBV and 45%due to *** was diagnosed in 79%of *** and sex did not significantly statistically differ in OS among viral and non-viral HCC patients(p-value>0.05).About 65%of patients had tumor size>5 cm during the diagnosis,with a significant statistical difference in OS(p-value=0.027).AFP was>400 ng/ml in 45%of the *** was a statistically significant difference in the OS in terms of AFP levels(p-value=0.021).A statistically significant difference was also observed between the CTP score and OS(p-value=0.02).CTP class B had the longest *** was the most common treatment provided to HCC patients followed by sorafenib *** was a significant statistical difference in OS among viral and non-viral HCC patients(p-value=0.008).Conclusions:The most common predictors for OS were the underlying cause of HCC,AFP,and tumor *** having non-viral etiology,a tumor size>5 cm,an AFP>400 ng/mL,and a CTP score class C were all negatively associated with OS.

关键词： Hepatocellular carcinoma Pattern Alpha-fetoprotein(AFP) Child-turcotte-pugh Progression free survival

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Synthesis of titanium carbide by induction plasma reactive spray

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中国有色金属学会会刊：英文版 2004年第1期14卷 15-19页

作者：蒋显亮 M.boulos Institute of Surface and Coatings Technology Central South University Changsha 410083 China Plasma Technology Research Center University of SherbrookeSherbrooke J1K 2R1 Canada

A novel method capable of sufficient mixing of titanium powder and methane of carbon source was developed in the synthesis of titanium carbide by induction plasma reactive spray. X ray diffraction analysis, optical microscopy, scanning electron microscopy, and microhardness test were used to characterize the spray formed deposit. The experimental results show that both primary carburization of the titanium particles inside the plasma flame and secondary carburization of the growing deposit on high temperature substrate contribute to the forming of titanium carbide. The transitional phase of TiC 1- x has the same crystal structure as TiC, but has a slightly low lattice constant. The deposit consists of fine grain structure and large grain structure. The fine grain structure, harder than large grain structure, shows grain boundary fracture.

关键词：碳化钛感应加热化学热处理 XRD 表面处理

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Radio Frequency Induction Plasma Spraying of Molybdenum

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Plasma Science and Technology 2003年第4期5卷 1895-1900页

作者：蒋显亮 Maher boulos Institute of Surface and Coatings Technology Central South UniversityChangsha 410083China Plasma Technology Research Center University of SherbrookeSherbrooke J1K 2R1Canada

Radio frequency (RF) induction plasma was used to make free-standing deposition of molybdenum (Mo). The phenomena of particle melting, flattening, and stacking were investigated. The effect of process parameters such as plasma power, chamber pressure, and spray distance on the phenomena mentioned above was studied. Scanning electron microscopy (SEM) was used to analyze the plasma-processed powder, splats formed, and deposits obtained. Experimental results show that less Mo particles are spheroidized when compared to the number of spheroidized tungsten (W) particles at the same powder feed rate under the same plasma spray condition. Molten Mo particles can be sufficiently flattened on substrate. The influence of the process parameters on the flattening behavior is not significant. Mo deposit is not as dense as W deposit, due to the splash and low impact of molten Mo particles. Oxidation of the Mo powder with a large particle size is not evident under the low pressure plasma spray.

关键词： induction plasma molybdenum spheroidi/ation flattening deposition density

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Induction plasma spheroidization of tungsten and molybdenum powders

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中国有色金属学会会刊：英文版 2006年第1期16卷 13-17页

作者：蒋显亮 M.boulos Institute of Surface and Coatings Technology School of Materials Science and Engineering Central South University Changsha 410083 China Plasma Technology Research Center University of Sherbrooke Sherbrooke J1K 2R1 Canada

The melting, evaporation and oxidation behaviors as well as the solidification phenomena of tungsten and molybdenum in induction plasma were studied. Scanning electron microscopy was used to examine the morphology and the cross section of plasma-processed powders. X-ray diffraction was used to analyze the oxides formed on the particle surface of these two metals. The influence of spray chamber pressure on the spheroidization and oxidation phenomena was discussed. The results show that fewer Mo particles than W particles are spheroidized at the same powder feed rate under the same plasma spray condition although molybdenum has a lower melting point. A small fraction of tungsten is evaporized and condensed either on the surface of tungsten particles nearby or on the wall of spray chamber. Tungsten oxides were found in tungsten powder processed under soft vacuum condition. Extremely large grains form inside some spheroidized particles of tungsten powder.

关键词：球化处理钨粉钼粉熔炼蒸发氧化等离子体冶金

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Development of Nanopowder Synthesis Using Induction Plasma

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Plasma Science and Technology 2010年第2期12卷 188-199页

作者： Richard DOLBEC Jerzy JUREWICZ Maher boulos Tekna Plasma Systems Inc. 2935 Industrial Boulevard Sherbrooke

The application of induction plasma technology developed for the synthesis of nano- metric powders is summarized. A brief description of the scientific basis for the induction plasma processes is given, followed by the presentation of an induction plasma system developed by Tekna, together with various examples of the nanopowders synthesized using its facilities. The advantages of the induction plasma process over alternative techniques and its adaptability into industrial- scale operation is particularly illustrated. Some specific issues related to the nanopowder synthesis process are also discussed.

关键词： nano-material nanopowders induction plasma

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The implementation of approximate coupling in two-dimensional SDEs with invertible diffusion terms

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Applied Mathematics(A Journal of Chinese Universities) 2020年第2期35卷 166-183页

作者： yousef Alnafisah Mathematics Department College of ScienceQassim UniversityP.O.Box 6644Buraydah 51452Saudi Arabia

We explain and prove some lemmas of the approximate coupling and we give some details of the Matlab implementation of this method.A particular invertible SDEs is used to show the convergence result for this method for... 详细信息

关键词： stochastic differential equation milstein method euler method

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Short Text Mining for Classifying Educational Objectives and Outcomes

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Computer Systems Science & Engineering 2022年第4期41卷 35-50页

作者： yousef Asiri College of Computer Science and Information Systems Najran UniversityNajran61441Saudi Arabia

Most of the international accreditation bodies in engineering education(e.g.,ABET)and outcome-based educational systems have based their assess-ments on learning outcomes and program educational ***,map-ping program educational objectives(PEOs)to student outcomes(SOs)is a challenging and time-consuming task,especially for a new program which is applying for ABET-EAC(American Board for Engineering and Technology the American Board for Engineering and Technology—Engineering Accreditation Commission)*** addition,ABET needs to automatically ensure that the mapping(classiﬁcation)is reasonable and *** classiﬁcation also plays a vital role in the assessment of students’*** the PEOs are expressed as short text,they do not contain enough semantic meaning and information,and consequently they suffer from high sparseness,multidimensionality and the curse of *** this work,a novel associative short text classiﬁcation tech-nique is proposed to map PEOs to *** datasets are extracted from 152 self-study reports(SSRs)that were produced in operational settings in an engineering program accredited by *** datasets are processed and transformed into a representational form appropriate for association rule *** extracted rules are utilized as delegate classiﬁers to map PEOs to *** proposed asso-ciative classiﬁcation of the mapping of PEOs to SOs has shown promising results,which can simplify the classiﬁcation of short text and avoid many problems caused by enriching short text based on external resources that are not related or relevant to the dataset.

关键词： ABET accreditation association rule mining educational data mining engineering education program educational objectives student outcomes associative classiﬁcation

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Gravitational coupling,dynamical changes of units and the cosmological constant problem

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Communications in Theoretical Physics 2020年第3期72卷 46-50页

作者： yousef Bisabr Department of Physics Shahid Rajaee Teacher Training UniversityLavizanTehran 16788Iran

A spacetime interval connecting two neighbouring points can be measured in different unit *** instance,it can be measured in atomic unit defined in terms of fundamental constants existing in quantum *** is also possible to use a gravitational unit which is defined by the use of properties of macroscopic *** two unit systems are usually regarded as indistinguishable up to a constant conversion *** we consider the possibility that these two units are related by an epoch-dependent conversion *** is a dynamical changes of *** a conformal transformation as a local unit transformation,we use a gravitational model in which the gravitational and the matter sectors are given in different conformal frames(or unit systems).It is relevant to the cosmological constant problem,namely the huge discrepancy between the estimated and the observational values of the cosmological constant in particle physics and cosmology,*** argue that the problem arises when one ignores evolution of the conversion factor relating the two units during expansion of the *** of the model with violation of equivalence principle and possible variation of fundamental constants are also discussed.

关键词： gravitation modified gravity cosmology

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