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Presence of Fragmented QRS Complexes in Patients with Obstructive Sleep Apnea Syndrome

Chinese Medical Journal 2015年第16期128卷 2141-2146页

作者： muhammet rasit sayin Murat Altuntas Ziyaeddin Aktop Ibrahim I Oz Nesimi Yavuz Ibrahim Akpinar Erol Sagatli Turgut Karabag Mustafa Aydin Department of Cardiology School of MedicineBulent Ecevit UniversityZonguldakTurkey Department of Pulmonology Uzun Mehmet State HospitalZonguldakTurkey Department of Radiology School of MedicineBulent Ecevit UniversityZonguldakTurkey Department of Cardiology Ataturk State Hospital Zonguldak Turkey

Background：Obstructive sleep apnea syndrome （OSAS） is a disease with increasing prevalence,which is mainly characterized by increased cardiopulmonary mortality and *** is well-known that OSAS patients have increased prevalence of cardiovascular diseases including coronary heart disease,heart failure,and *** aim of this study was to evaluate the presence of prolonged and fragmented QRS complexes,which have previously been associated with cardiovascular mortality,in OSAS ***：Our study included 51 patients （mean age 41.6 ± 10.1 years） who were recently diagnosed with OSAS （apnea-hypopnea index [AHI] ≥5 events/h） and never received *** control group consisted of 34 volunteers （mean age 43.1 ± 11.6 years） in whom OSAS was excluded （AHI 〈5 events/h）.The longest QRS complexes was measured in the 12-lead electrocardiogram （ECG） and the presence of fragmentation in QRS complexes was ***：Fragmented QRS frequency was significantly higher in patients with OSAS （n =31 [61%] vs.n =12 [35%],P =0.021）.QRS and QTc durations were also significantly longer in OSAS patients than controls （99.8 ± 13.9 ms vs.84.7 ± 14.3 ms,P 〈 0.001;411.4 ± 26.9 ms vs.390.1 ± 32.2 ms,P =0.001,respectively）.Analysis of the patient and controls groups combined revealed a weak-moderate correlation between AHI and QRS duration （r =0.292,P =0.070）.OSAS group had no correlation between AHI and QRS duration （r =-0.231,P =0.203）.Conclusions：In our study fragmented QRS frequency and QRS duration were found to increase in OSAS *** parameters are related with increased cardiovascular *** the prognostic importance of ECG parameters,it may be reasonable to recommend more detailed evaluation of OSAS patients with fragmented or prolonged QRS complexes with respect to presence of cardiovascular diseases.

关键词： Electrocardiogram Fragmented QRS Obstructive Sleep Apnea QRS Duration QT Duration

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The impact of being in the COVID-19 pandemic on in-hospital mortality of non-infected patients aged 80 years and older with ST-elevation myocardial ınfarction

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Journal of Geriatric Cardiology 2024年第7期21卷 768-774页

作者： Mustafa Ebik muhammet Gürdoğan UğurÖzkan Department of Cardiology Edirne Sultan 1.Murat State HospitalEdirneTurkey Department of Cardiology School of MedicineTrakya UniversityEdirneTurkey

The COVID-19 outbreak in late 2019 was declared a pandemic by the World Health Organization(WHO)on March 12,2020.[1]As of the latest WHO data,COVID-19 has caused over 770 million cases and nearly 7 million deaths worldwide.[2]Hospitalizations due to COVID-19 are correlated with advanced age.[3,4]According to re-ports,individuals over the age of 65 account for 80%of COVID-19-related deaths.[3,4]This is primar-ily due to the increased burden of comorbidity with age.

关键词： infected patients mortality

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Investigating the performance of passageway corridor for ground reinforced embankments against rockfall

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Journal of Mountain Science 2023年第1期20卷 15-30页

作者： muhammet Çelik Civil Engineering Department Faculty of EngineeringYalova UniversityYalova77200Türkiye

Rockfall disasters can result in damages to various structures such as highways and *** reinforced embankments(GRE) are one of the barrier types used to prevent rockfall. GRE absorb the impact energy of the hitting rock blocks by the movement of fine soil particles triggered by the penetration of the rock in the soil. In this process,stresses in the wall are distributed in both the transverse and longitudinal directions. GREs on the valley slopes can be hundreds of meters long, so such structures cause difficulty in transition to valley slope behind the embankments. Especially, access to areas such as agricultural, pasture or forest lands behind the GRE becomes a challenge. The current paper presents the design of passageways in GRE using the finite element method to provide safe corridors at several different parts within the hundreds of meters long structures. A total of 4 different passageway designs for GRE were developed. Each finite element model was subjected to rockfall with different kinetic energies of 500, 1000 and 3000kJ. The obtained results showed that 44% increase in structure volume increased the impact capacity from 500 kJ to ***, the critical displacement caused by rockfall impact with an energy of 3000 kJ was reduced by 31%. It was determined that the support applied with the reinforced concrete wall did not reach the desired energy absorption value due to its rigid structure, and even collapsed at 3000 kJ.

关键词： Disaster Rockfall Ground reinforced embankments Finite elements Transportation

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Assessment Method of Offshore Wind Resource Based on Multi-dimenssiional Indexes System

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 76-87页

作者： Xiaomei Ma Yongqian Liu Jie Yan Shuang Han Li Li Hang Meng muhammet Deveci Konstanze Kolle Umit Cali the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(NCEPU) School of New EnergyNorth China Electric Power UniversityBeijing 102206China School of Physical and Electronic Information Engineering Qinghai Normal UniversityXiningQinghai 810016China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(NCEPU) School of New EnergyNorth China Electric Power UniversityBeijing 102206China the Royal School of Mines Imperial College London.London SW72AZUKand also with Department of Industrial EngineeringTurkish Naval AcademyNational Defence University34940IstanbulTurkey Department of Energy Systems SINTEF Energy ResearchTrondheimNO-7034 Norway Department of Electric Power Engineering Norwegian University of Science and TechnologyTrondheimNO-7491 Norway

Traditional assessment indexes could not fully describe offshore wind resources,for the meteorological properties of offshore are more complex than *** a result,the uncertainty of offshore wind power projects would be increased and final economic benefits would be ***,a study on offshore wind resource assessment is carried out,including three processes of“studying data sources,conducting multidimensional indexes system and proposing an offshore wind resource assessment method based on analytic hierarchy process(AHP).First,measured wind data and two kinds of reanalysis data are used to analyze the characteristics and reliability of data ***,indexes such as effective wind speed occurrence,affluent level occurrence,coefficient of variation,neutral state occurrence have been proposed to depict availability,richness,and stability of offshore wind resources,*** with existing parameters(wind power density,dominant wind direction occurrence,water depth,distance to coast),a multidimensional indexes system has been built and on this basis,an offshore wind energy potential assessment method has been ***,the proposed method is verified by the annual energy production of five offshore wind turbines and practical operating data of four offshore wind farms in *** study also compares the ranking results of the AHP model to two multi-criteria decision making(MCDM)models including weighted aggregated sum product assessment(WASPAS)and multi-attribute ideal real comparative analysis(MAIRCA).Results show the proposed method gains well in practical engineering applications,where the economic score values have been considered based on the offshore reasonable utilization hours of the whole life cycle in China.

关键词： Annual energyproduction aatmospheric stability data sources offshore wind resource wind power density

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A Model for Cross-Domain Opinion Target Extraction in Sentiment Analysis

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Computer Systems Science & Engineering 2022年第9期42卷 1215-1239页

作者： muhammet Yasin PAK Serkan GUNAL Department of Computer Engineering Eskisehir Technical UniversityEskisehirTurkiye

Opinion target extraction is one of the core tasks in sentiment analysison text data. In recent years, dependency parser–based approaches have beencommonly studied for opinion target extraction. However, dependency parsersare limited by language and grammatical constraints. Therefore, in this work, asequential pattern-based rule mining model, which does not have such constraints,is proposed for cross-domain opinion target extraction from product reviews inunknown domains. Thus, knowing the domain of reviews while extracting opinion targets becomes no longer a requirement. The proposed model also revealsthe difference between the concepts of opinion target and aspect, which are commonly confused in the literature. The model consists of two stages. In the firststage, the aspects of reviews are extracted from the target domain using the rulesautomatically generated from source domains. The aspects are also transferredfrom the source domains to a target domain. Moreover, aspect pruning is appliedto further improve the performance of aspect extraction. In the second stage, theopinion target is extracted among the aspects extracted at the former stage usingthe rules automatically generated for opinion target extraction. The proposedmodel was evaluated on several benchmark datasets in different domains andcompared against the literature. The experimental results revealed that the opiniontargets of the reviews in unknown domains can be extracted with higher accuracythan those of the previous works.

关键词： Opinion target extraction aspect extraction sentiment analysis

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Seed,germination,and seed-reserve traits differ along an altitudinal gradient

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Journal of Forestry Research 2022年第6期33卷 1903-1912页

作者： muhammet Tonguç Sercan Önder Nesrin Gülcemal Fatih Tonguç Faculty of Agriculture Department of Agricultural BiotechnologyIsparta University of Applied Sciences32260 IspartaTurkey Faculty of Forestry Department of Forest EngineeringIsparta University of Applied Sciences32260 IspartaTurkey

Turkish red pine(P inus brutia Ten.), an important pine species for afforestation studies, grows at a wide range of altitudes in the eastern Mediterranean area. Seeds from low(0–400 m a.s.l.), mid(400–800 m) and high(800–1000 m) altitudinal gradients were collected to assess the effects of these gradients on morphological traits(seed length, seed width, 100-seed weight), germination variables(germination percentage and mean germination time), and 10biochemical variables related to seed reserves. Relationships among these variables were examined with a correlation analysis. Seeds from low and high altitudes had significantly higher 100-seed weight, higher percentage germination but longer germination times and higher total oil and reducing sugars contents. Seeds from mid altitudes had higher carotenoid and soluble phenolics contents. Among the examined biochemical variables, only flavonoid content did not differ among the altitude gradients. The main fatty acids in seeds samples(linoleic, oleic, palmitic and stearic acids) were also influenced by the altitude gradients. Oil and total reducing sugars contents were positively correlated with germination percentage, and carotenoid content was negatively correlated with germination percentage. Our results confirmed that seed and germination variables, including the reserve composition varied significantly among the altitudinal gradients.

关键词： Elevation Germination Pine Seed Seed reserves

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Performance Analysis of Modulation Techniques in 5G Communication System

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China Communications 2022年第8期19卷 100-114页

作者： muhammet Tahir Guneser Ahmed Salahaldeenali Sahab Cihat Seker Electrical and Electronics Engineering Department Engineering FacultyKarabuk UniversityTurkey

In the 5^(th) generation mobile communication(5G)system,better bitrate,better power consumption,and better Bit Error Rate are *** meet all these requirements in 5G,the waveform is *** the Orthogonal Frequency Division Multiplexing(OFDM)modulation scheme has been commonly used in 4G,it is difficult to meet the requirements of 5G.A lot of candidate waveforms are discussed in the 5G system included Filter Bank Multicarrier(FBMC),Universal Filtered Multicarrier(UFMC),Filtered OFDM(F-OFDM),and Generalized Frequency Division Multiplexing(GFDM),***,since GFDM is no longer widely used,in this paper,FBMC,UFMC,and F-OFDM modulation schemes are discussed and compared with *** Spectral Density(PSD),Bit Error Rate(BER),Transmitted Signal Power,Peak Average Power Ratio(PAPR)and Bit Rate parameters of the modulation schemes are studied and compared with *** demonstrates to be the most promising modulation scheme for 5G systems.

关键词： PSD PAPR OFDM FBMC UFMC FOFDM

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The effect of hardaliye on reducing the formation of malondialdehyde during in vitro gastrointestinal digestion of meat products

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Food Bioscience 2022年第3期47卷 1271-1280页

作者： Ayşe Semra Aksoy muhammet Arici Mustafa Yaman Department of Food Engineering Faculty of Chemical and Metallurgical EngineeringYildiz Technical UniversityIstanbul34220Turkey Department of Nutrition and Dietetics Faculty of Health SciencesIstanbul Sabahattin Zaim UniversityIstanbul34303Turkey

Hardaliye is a non-alcoholic beverage produced from red/black grapes by adding mustard seeds and lactic acid *** this study,it was aimed to determine the total phenolic content(TPC)and total antioxidant capacity(TAC)of hardaliye samples produced with three different grape varieties(Shiraz,Merlot and Cabernet Sauvignon)before and after in vitro digestion,to determine their bioaccessibility,and to investigate their effects on reducing malondialdehyde(MDA)formation in meat *** decreased after in vitro digestion in all three hardaliye samples and their bioaccessibility values were 57.64%,41.54%,and 52.78%(for Shiraz,Merlot,and Cabernet Sauvignon hardaliye,respectively).After in vitro digestion TAC value according to the DPPH method increased in all samples and according to the CUPRAC method decreased in Merlot and Cabernet Sauvignon hardaliye samples,while it increased in the Shiraz *** in vitro digestion,MDA value increased in control meat samples and decreased in the samples treated with hardaliye *** treatment with other beverages was effective in reducing the post-digestion MDA value of some meat samples,the hardaliye samples were more effective in reducing this value and the lowest MDA bioaccessibility(%)values were determined in those treated with hardaliye *** samples with the lowest values were meat doner 1 treated with Shiraz hardaliye(10.27%);burger patties 2 treated with Shiraz hardaliye(22.40%);and meatball 2 treated with Cabernet Sauvignon hardaliye(7.12%).These findings indicate that hardaliye has potential beneficial health effects and can be used for the design of healthy eating patterns due to its lipid oxidation reducing potential in the gastrointestinal tract.

关键词： Hardaliye Antioxidant activity Bioactive property Bioaccessibility In vitro digestion Lipid peroxidation Malondialdehyde Grape Oxidative stress Nutrition

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On Degenerate Array Type Polynomials

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Computer Modeling in Engineering & Sciences 2022年第4期130卷 295-305页

作者： Lan Wu Xue-Yan Chen muhammet Cihat Dagli Feng Qi Key Laboratory of Intelligent Manufacturing Technology Inner Mongolia Minzu UniversityTongliao028000Inner MongoliaChina Department of Mathematics Akdeniz UniversityAntalya07058Turkey Institute of Mathematics Henan Polytechnic UniversityJiaozuo454010China School of Mathematical Sciences Tiangong UniversityTianjin300387China

In the paper,with the help of the Fa′a di Bruno formula and an identity of the Bell polynomials of the second kind,the authors define degenerateλ-array type polynomials,establish two explicit formulas,and present se... 详细信息

关键词： Degenerate array polynomial Stirling number of the second kind generating function explicit formula recurrence relation

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Hybrid q-Rung Orthopair Fuzzy Sets Based CoCoSo Model for Floating Offshore Wind Farm Site Selection in Norway

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CSEE Journal of Power and Energy Systems 2022年第5期8卷 1261-1280页

作者： muhammet Deveci Dragan Pamucar Umit Cali Emre Kantar Konstanze Kolle John O.Tande Department of Industrial Engineering Turkish Naval AcademyNational Defence UniversityIstanbul 34940Turkey Department of Operations Research and Statistics Faculty of Organizational SciencesUniversity of BelgradeBelgradeSerbia Department of Electric Power Engineering Norwegian University of Science and TechnologyTrondheim NO-7491Norway Department of Electric Power Technology SINTEF Energy ResearchTrondheim NO-7491Norway Department of Energy Systems SINTEF Energy ResearchTrondheim NO-7034Norway

Unlocking offshore wind farms’high energy generation potential requires a comprehensive multi-disciplinary analysis that consists of intensive technical,economic,logistical,and environmental *** wind energy projects have high investment volumes that make it essential to conduct extensive site selection to ensure feasible investment decisions that reduce the potential financial *** on the scenario and circumstances,a ranking of alternative offshore wind energy projects helps to prioritise the investment *** algorithms based on expert knowledge can support the prioritisation and thus alleviate the work load for investment decisions in the *** case study considered here is to find the best site for a floating offshore wind farm in Norway from four pre-selected alternatives:Utsira Nord,Stadthavet,Froyabanken,and Trana *** propose a hybrid decisionmaking model as a combined compromised solution(CoCoSo)based on the q-rung orthopair fuzzy sets(q-ROFSs)including the weighted q-rung orthopair fuzzy Hamacher average(Wq-ROFHA)and the weighted q-rung orthopair fuzzy Hamacher geometric mean(Wq-ROFHGM)*** this model,the q-ROFSs based full consistency method(FUCOM)is introduced as a new methodology to determine the weights of the decision *** results of the proposed model show that the best site among the investigated four alternatives is A1:Utsira Nord.A sensitivity analysis has verified the stability of the proposed decision-making model.

关键词： Decision-making q-rung orthopair fuzzy sets Fuzzy hamacher site selection offshore wind farm FUCOM

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