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Modal Control of Cantilever Beam Using a Gyrostabilizer

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Sound & Vibration 2021年第4期55卷 281-294页

作者： OlkanÇuvalcı farukÜnker Turgut Batuhan Baturalp Utku Gülbulak Atila Ertaş Department of Mechanical Engineering Karadeniz Technical UniversityTrabzon61080Turkey Department of Mechanical Engineering Gümüşhane UniversityGümüşhane29100Turkey Department of Mechanical Engineering Texas Tech UniversityLubbock79409USA

In this paper,an experimental model of a horizontal cantilever beam with a rotating/oscillating attached to the shaker for harmonic excitation at the one end and a gyrostabilizer at the other end is built to verify the equations of the Lagrangian *** primary focus of the study was to investigate the parameters of excitation amplitude,natural frequency,rotating mass(disk mass),and disk speed of gyro that would minimize the amplitude of the beam to identify these *** and experimental results indicate that the angular momentum of the gyrostabilizer is the most effective parameter in the reduction of beam displacement.

关键词： Cantilever beam rotating tip mass gyrostabilizer roll motion modal control flexural vibration

Renal Outcomes and Myocardial Performance after On-Pump Beating Heart versus Conventional On-Pump Surgery in Patients with Preoperative Low Glomerular Filtration Rate

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World Journal of Cardiovascular Diseases 2016年第11期6卷 433-445页

作者： Salih Colak Davut Azboy Zeki Temizturk Hakan Atalay omer faruk Dogan Dilek Dogan Emjed Khalil Kenan Abdurrahman Kara Department of Cardiology The Health and Science University Adana Numune Education and Training Hospital Adana Turkey Department of Cardiovascular Surgery The Health and Science University Elazig Education and Training Hospital Elazig Turkey Department of Cardiovascular Surgery Mersin Private Middle-East Hospital Mersin Turkey Department of Cardiovascular Surgery The Health and Science University Adana Numune Education and Training Hospital Adana Turkey Department of Dietetic and Parenteral Nutrition The Health and Science University Adana Numune Education and Training Hospital Adana Turkey Department of Cardiovascular Surgery The Private Medicana ?aml?ca Hospital Istanbul Turkey

Objective: Acute kidney disease develops 16% - 30% of patients with preoperative impaired renal functions. Our aim of this study was to compare postoperative renal outcomes using two open heart surgery techniques, on-pump beating heart (OPBH) and conventional on-pump (COP), in patients who have preoperative low glomerular filtration rate (eGFR) as an indicator of creatinine clearance. Methods: From 2004 to 2015, 341 patients with preoperative creatinine clearance were lower than 90 ml/min/1.73m2 were selected for this study. On-Pump beating heart was performed in 111 patients (Group I). Conventional on-pump technique was used in 200 patients. In the remaining patients, we measured postoperative Tumor Necrosis Factor Alpha (TNF-alpha), cardiac troponin I (cTn-I), Brain natriuretic peptid (NT-Pro- BNP), creati-nine (Cr), blood urea nitrogen (BUN) and postoperative eGFR daily until day four after surgery. Results: There were no differences in baseline levels of TNF-alpha, NT-Pro-BNP, BUN, cTn-I, Cr levels between the groups. Cardiopulmonary bypass (CPB) time were much longer and cumulative inotrope use was significantly higher in patients underwent COP (P Conclusion: Our study showed that on-pump beating heart CABG technique provides a morbidity benefit and is associated with a lower risk of peroperative LOS in patients with mild renal disfunction. Our study results suggest that OPBH is superior to the COP in terms of postoperative renal injury and cardiac mediators.

关键词： Open Heart Surgery Beating Heart Postoperative Renal Failure

Energy Fluctuation of Ideal Fermi Gas Trapped under Generic Power Law Potential U=Σ_(i=1)~d c_i|x_i/a_i|^(n_i) in d Dimensions

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Communications in Theoretical Physics 2016年第4期65卷 465-468页

作者： Mir Mehedi faruk Md.Muktadir Rahman Dwaipayan Debnath Md.Sakhawat Hossain Himel Theoretical Physics Blackett LaboratoryImperial College Department of Theoretical Physics University of Dhaka Department of Biomedical Physics and Technology University of Dhaka

Energy fluctuation of ideal Fermi gas trapped under generic power law potential U=Σ_(i=1)~d c_i|x_i/a_i|^(n_i) has been calculated in arbitrary *** fluctuation is scrutinized further in the degenerate limit μ>>K_B T with the help of Sommerfeld *** dependence of energy fluctuation on dimensionality and power law potential is studied in *** importantly our general result can not only exactly reproduce the recently published result regarding free and harmonically trapped ideal Fermi gas in d =3 but also can describe the outcome for any power law potential in arbitrary dimension.

关键词： Fermi gas power law potential energy fluctuation

Natural Walls of Anatolia: formation and development of Diş Kayalıkları as a structural landform (Sivas, Türkiye)

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Journal of Mountain Science 2023年第7期20卷 1807-1823页

作者： UZUN Ali AYLAR faruk ZEYBEK Halil Ibrahim GÜRGÖZE Serkan BAHADIR Muhammet ALEMDAĞ Selçuk Geography Department Ondokuz Mayis UniversitySamsun 55100Turkey Geological Engineering Department Gümüşhane UniversityGümüşhane 29100Turkey

The Diş Kayalıkları is one of the largest and most striking examples of crests in the world and is located between Eskidere and Boğazören villages of the İmranlı district of the Sivas province in Turkey. The crests, which resemble castle walls when viewed from afar, have a real wall pattern due to the right-angled crack system of the bedrock when viewed closely. This study aims at investigating the geomorphological features of the Diş Kayalıkları and determining how the geological and geomorphological evolution of the Diş Kayalıkları took place and how the current formation mechanism continues. In the region, the mid-latitude continental climate prevails with cold humid winters and warm dry summers. The bedrock consists of Miocene bedded deposits of different resistance, folded by young tectonic movements. Diş Kayalıkları was formed by selective erosion of less resistant terrain around a pack of resistant rock on the steeper southern slope of an asymmetrical anticline. It has a length of 4750 m in the approximately northwest-southeast direction, a maximum height of 30 m, and a width varying between 5 and 8 m. In the present morphological appearance of the Diş Kayalıkları, it can be stated that the structure formed after the tectonic formation process was eroded under the control of the local climate and crest formation was realized. In the following process, the crest experienced a polycyclic process where different landforms were formed. There are smaller landforms such as karren, cave and rock window on Diş Kayalıkları, and macrofossil beds in some places. This highly attractive geomorphosite, unknown to wider public, should be investigated from various scientific aspects and should be brought to regional tourism by making the necessary infrastructure and promotion studies.

关键词： Structural landform Crest Geosite DişKayalıkları Sivas

半胱氨酸在碳钢与硫酸界面的缓蚀行为(英文)

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物理化学学报 2008年第8期24卷 1387-1392页

作者： ZCAN Muzaffer KARADA■ faruk DEHRI lyas Department of Science and Technology Education Cukurova University Department of Physics Cukurova University Department of Chemistry Cukurova University Department of Chemistry Korkut Ata University Osmaniye 80000 Turkey

Interfacial behavior of cysteine (Cys) between mild steel and sulfuric acid solution as a corrosion inhibitor has been studied with electrochemical AC (alternating current) and DC (direct current) techniques at (25.0±0.1) ℃. The AC impedance results were evaluated using equivalent circuits in which a constant phase element (CPE) has been replaced with double layer capacitance (Cdl) to represent the frequency distribution of experimental data. Changes in impedance parameters (charge transfer resistance and double layer capacitance) indicated that cysteine molecules acted by accumulating at the metal/solution interface. The fractional coverage of the metal surface (θ) was determined using AC impedance results and it was found that the adsorption of cysteine on the mild steel surface followed a Langmuir isotherm model with a standard free energy of adsorption (△G0 ads) of -35.1 kJ·mol-1. To clarify the type of interaction between mild steel surface and cysteine molecules with a molecular orbital approach, electronic properties, such as, the highest occupied molecular orbital (HOMO) energy, the lowest unoccupied molecular orbital (LUMO) energy, and the frontier molecular orbital coefficients have been calculated. Energy gaps for the interaction of mild steel surface and cysteine molecules (ELUMO Fe-EHOMO Cys and ELUMO Cys-EHOMO Fe) were used to determine whether cysteine molecules acted as electron donors or electron acceptors when they interacted with the mild steel surface. The local reactivity was evaluated through the condensed Fukui indices. Theoretical calculations were carried out using the density functional theory (DFT) at B3LYP level with the 6-311++G(d,p) basis set for all atoms by Gaussian 03W program.

关键词：软钢防腐技术缓蚀剂半胱氨酸硫磺酸

Evaluation of penile hemodynamic status and adjustment of treatment alternatives in Peyronie's disease

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Asian Journal of Andrology 2002年第3期4卷 187-190页

作者： Tibet Erdogru Murat Savas Namik Yilmaz Mustafa faruk Usta Turker Koksal Mutlu Ates Mehmet Baykara Department of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 TurkeyDepartment of Urology Akdeniz University Faculty of Medicine Kampus 07059 Turkey

Aim: Erectile dysfunction may be observed in up to 80% of patients with Peyronie's disease. An objective evaluation of the erectile function is attempted to work out in patients with Peyronie's disease. Methods: Penile deformity, sexual function and penile vascular status were analyzed in 123 patients with Peyronie's disease, who had not received any pertinent treatment. Results: Penile deformity, palpable plaque and pain on erection were seen in 112 (91%), 97(78.8%) and 27 (21.9%) of the 123 patients, respectively. Of the 76 patients evaluated by color Doppler ultrasounography, veno-occlusive dysfunction as the vascular component for erectile dysfunction was found in 17 (22.3%), arterial insufficiency in 10(13.1%) and a mixed picture in 23 (30.2%). Conclusion: The documentation of penile erectile function and the determination of the vascular status using color Doppler ultrasonography can guide the appropriate therapeutic choice.

关键词： Peyronie's disease sexual function penile vascular status color Doppler ultrasonography

CN Andromedae:a shallow contact binary with a possible tertiary component

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Research in Astronomy and Astrophysics 2019年第1期19卷 103-112页

作者： Muhammed faruk Yildirim Fahri Alicavus faruk Soydugan Canakkale Onsekiz Mart University Faculty of Arts and SciencesDepartment of Physics Canakkale Onsekiz Mart University Astrophysics Research Center and Ulupinar Observatory

In this study, new photometric observations of shallow contact binary CN Andromedae(CN And)were performed and multi-color(BV R) CCD light curves(LCs) were obtained. Simultaneous analysis of new LCs and published radial velocity(RV) data reveals that the system is an early contact binary in which both components have recently filled their inner Roche lobes. Asymmetric LCs were modeled by a dark spot on the primary component and a hot spot on the secondary component that probably resulted from magnetic activity and mass transfer, respectively. Modeling of LCs and RV data allows us to estimate the following absolute parameters: M1= 1.40 ± 0.02 M⊙, M2= 0.55 ± 0.01 M⊙, R1= 1.45 ± 0.02 R⊙and R2= 0.94 ± 0.02 R⊙. A decreasing orbital period with a rate of d P/dt =-1.5 × 10-7d yr-1can be seen as evidence that the system is evolving into a contact binary with higher contact degree. Cyclic oscillation of the O-C data was interpreted by the Applegate mechanism and light-time effect due to an unseen component around the close binary system. The hypothetical third component is probably a fully convective red dwarf star with a minimal mass of 0.1 M⊙. CN And is at the early phase of the contact stage of its evolution and is an interesting example for studying the formation and evolution of close binaries.

关键词： binaries:eclipsing stars:fundamental parameters stars:individual(CN And)

Kinetic Study of Color Changes of Tomato Purees with Microwave and Conventional Drying

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Journal of Food Science and Engineering 2011年第5期1卷 366-373页

作者： Ö. faruk Gamli Korkut Ata University Vocational High School

Kinetics of color change in tomato purees dried using microwave and conventional method were investigated. For this purpose, the color parameters of Hunter L,a,b and browning index （A42o）, and estimated values of chroma, hue angle, AE, Hunter a/b and a ~ b were examined. The changes in color of tomato samples followed both zero and first order kinetic models to describe visual color changes, and ＆E parameters followed first order kinetic. It was concluded that Hunter axb parameters can be used adequately to follow up the color change of tomato samples during the drying.

关键词： Tomato drying microwave conventional zero and first order Hunter a x b.

Asian and African Officials’ Views on China’s 40 Years of Reform and Opening-up

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China Today 2018年第1期67卷 22-23页

作者： Biar Majok, Kual Ayom Kabia, Sylvia Abibatu Tin Tin Nwet Ulanbek Alyshbaev Onol, omer faruk Agazy, Miftah Dender Ministry of Trade and Industry South Sudan. Ministry of Justice Sierra Leone. Ministry of Commerce Myanmar. Ministry of Culture and Tourism Kyrgyz Republic. Department for International Trade Turkey. Ministry of Finance and Economic Development Ethiopia

China＇s reform and opening-up policy, which started in 1978, has become more effective. The success of reform and opening-up has transformed China from a low-income country to one of the world＇s largest econo- mies today. In my view, the success of China＇s develop- ment lies in the country greatly reducing the number of people living in poverty. According to the World Bank, hundreds of millions of Chinese people have been lifted out of extreme poverty.

关键词： Asian and African Officials' Views China's 40 Years of Reform ancl Opening-up