检索结果-南通市图书馆

Determination of characteristics for mechanically separated organic fraction of MsW at a full-scale anaerobic digestion plant

在线全文

学校读者我要写书评

暂无评论

Waste Disposal and Sustainable Energy 2024年第2期6卷 233-241页

作者： Yagmur Kabakci Sadiye Kosar Ozgur dogan Fehmi Gorkem Uctug Osman Atilla Arikan Department of Environmental Engineering Istanbul Technical University34469 AyazagaIstanbulTurkiye TUBITAK Marmara Research Center 41400 GebzeKocaeliTirkiye Centre for Water Technology(WATEC)and Department of Biological and Chemical Engineering Aarhus UniversityOle Worms Allé38000 Aarhus CDenmark Faculty of Engineering Izmir University of Economics35330BalcovaIzmirTurkiye

Anaerobic digestion(AD)as a waste management method has the potential to reduce greenhouse gas emissions while pro-ducing renewable energy,making it a viable option for managing the organic fraction of municipal solid waste(OFMSW).OFMSW characteristics can vary depending on factors such as waste source,composition and separation *** charac-teristics of OFMSW are critical for analyzing and monitoring the AD process to optimize biogas *** this study,the waste composition and physicochemical characteristics of the mechanically separated OFMSW(ms-OFMSW)were determined at a full-scale AD plant in *** ms-OFMSW samples were collected monthly after mechanical separation and were subsequently sent to the anaerobic *** composition and physicochemical characteristics of the samples were determined by manual *** results showed that the majority of the ms-OFMSW(76.45%±1.71%)was organic,while 8.99%±1.56%was recyclable and 14.56%±1.69%was *** of environmental benefits for the recyclable materials was determined using a free online tool provided by Environmental Protection ***(399.7 GJ)and plas-tics(403.7 GJ)both saved nearly the same amount of energy while metals saved the most water(421.8 m3),with the greatest positive *** benefits ranged from 3 tons to 40 tons of carbon dioxide equivalent for each waste *** findings suggest that efficient pre-separation units can improve the anaerobic digestibility of OFMSW,while also providing greater environmental benefits by preventing recyclable waste from the anaerobic *** addition to encouraging source separation applications,this study demonstrates the need for improved technologies to separate OFMSW from mixed MSW.

关键词： Anaerobic digestion Composition Mechanical separation Organic fraction of municipal solid waste Ms-OFMSW

Is sarcopenia effective on survival in patients with metastatic gastric cancer?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第5期16卷 1861-1868页

作者： Ozlem dogan Hayriye Sahinli Yakup Duzkopru Tuba Akdag Abdulkadir Kocanoglu Department of Medical Oncology Adıyaman University Training and Research HospitalAdiyaman 02100Turkey Department of Medical Oncology Ankara Etlik City HospitalAnkara 06170Turkey Department of Radiology University of Health SciencesDiskapi Yildirim Beyazit Training and Research HospitalAnkara 06000Turkey Department of Medical Oncology Ankara Ataturk Sanatoryum Training and Research HospitalAnkara 06170Turkey

BACKGROUND Sarcopenia is a progressively diminishing state characterized by the reduction of muscle mass and density,which is frequently observed in malignancies of solid *** To assess how sarcopenia affects the overall survival of individuals who have been diagnosed with metastatic gastric *** The study retrospectively included individuals who had been diagnosed with metastatic gastric cancer between January 2008 and December *** was identified through the calculation of the average Hounsfield units(HUAC)using computed tomography(CT)images taken at the time of diagnosis in *** A total of 118 patients with metastatic gastric cancer were *** was detected in 29 patients(24.6%).The median survival of all patients was 8(1-43)*** median survival of patients with sarcopenia was 2 mo,while it was 10 mo for those without sarcopenia(P<0.001).A significant relationship was found between sarcopenia and *** Sarcopenia has been observed to impact survival outcomes in various types of solid tumor *** patients can be identified in a short time,easily and inexpensively,by HUAC measurements from CT images used for diagnosis,and survival could be promoted with nutritional support.

关键词： Hounsfield units Sarcopenia Gastric cancer Survival Psoas muscle mass Muscle density

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

阿姆斯特丹Zoku阁楼酒店

现代装饰 2015年第9期 122-127页

作者： Rob Wagemans Ulrike Lehner ayca dogan Maarten De Geus Bart De Beer Murk Wymenga Sofie Ruytenberg Femke Zumbrink Jolijn Vonk Cathelijne Vreugdenhil Matthijs Hombergen Jeroen Vester Ewout Huibers 姜敏华 Concrete ZOKU

本案是新酒店品牌Zoku与室内设计公司Concrete合作打造的一个＂住所、办公室混合体＂的阁楼酒店。作为新的酒店类型,Zoku打破了酒店设计的传统格局,主要为寻求临时生活的人们、需要暂住数月的工作一族提供居住和工作的空间,使其从经济... 详细信息

本案是新酒店品牌Zoku与室内设计公司Concrete合作打造的一个＂住所、办公室混合体＂的阁楼酒店。作为新的酒店类型,Zoku打破了酒店设计的传统格局,主要为寻求临时生活的人们、需要暂住数月的工作一族提供居住和工作的空间,使其从经济上和文化上受益,为他们提供一个可以舒适生活和工作的场所。首家开设的Zoku酒店,拥有133间带阁楼的客房以及超过500平方米的社交空间。

关键词： Zoku 室内设计间带混合体楼梯设计高窗自然光线折叠门社交活动功能用途

维普期刊数据库博看期刊

Streamlined CFD simulation framework to generate wind-pressure coefficients on building facades for airflow network simulations

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2021年第4期14卷 1189-1200页

作者： Timur dogan Patrick Kastner Cornell University Department of ArchitectureEnvironmental Systems LaboratoryEast Sibley HallIthacaNY14850USA

Building energy modeling software generally comes with capable airflow network solvers for natural ventilation evaluation in multi-zone building energy models. These approaches rely on arrays of pressure coefficients representing different wind directions derived from simple box-shaped buildings without contextual obstructions. For urban or obstructed sites, or more complex building shapes, however, further evaluation is needed to avoid geometric oversimplification. In this study, we present an automated and easy-to-use simulation workflow for OpenFOAM-based exterior airflow simulations to generate arrays of pressure coefficients for arbitrary building shapes and contextual situations. The workflow is compared to other methods commonly used to obtain pressure coefficients for natural ventilation analysis. Finally, we assess for which climate zones and building types modelers should rely on more accurate CFD-based pressure coefficients and where it may be justifiable to rely on easier and readily available analytical approaches to determine pressure coefficients. Results suggest that existing workflows lead to significant error in predicted comfort hours for climates in the Global South and modelers should consider CFD-based facade pressure coeficients.

关键词： natural ventilation airflow networks EnergyPlus pressure coefficients computational fluid dynamics

Axial gas mixing in conical spouted beds with high density particles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2023年第10期81卷 45-57页

作者： Neslin dogan Murat Koksal Gorkem Kulah Department of Chemical Engineering Middle East Technical UniversityAnkaraTurkey Department of Mechanical Engineering Hacettepe UniversityBeytepeAnkaraTurkey

Conical spouted beds operating with high-density particles(ρp>2500 kg/m^(3))have recently gained attention because of their potential use as nuclear fuel coaters for next-generation nuclear *** the literature,the number of axial gas mixing studies in conical and conical-cylindrical spouted beds is very limited and all axial mixing studies were carried out with relatively light particles(ρp≤2500 kg/m^(3)).Therefore,the objective of this study was to generate experimental data that can be used to explain the gas axial mixing behavior in conical spouted beds operating with both low-and high-density *** were conducted in two(γ=30°,60°)conical spouted beds with three different types of particles:zirconia(ρp=6050 kg/m^(3)),zirconia toughened alumina(ρp=3700 kg/m^(3))and glass beads(ρp=2460 kg/m^(3)).In order to be able to compare experimental data obtained at different conditions,a 1-D convection-diffusion gas mixing model originally developed by San Joséet al.(1995)was implemented to determine the axial dispersion *** results show that the axial dispersion coefficients range between m^(2)/s and m^(2)/s,increase with superficial gas velocity and are higher than the corresponding dispersion coefficients of fixed beds,lower than the dispersion coefficients of fluidized beds and in the same range with the cylindrical spouted beds reported in the *** corresponding Peclet numbers were in the range of 0.6–7.8 for all operating conditions and slightly higher Peclet numbers were obtained with glass beads indicating the relative importance of gas convective transport over gas dispersion for light particles compared to heavy particles.

关键词： Conical spouted bed Gas dispersion coefficient Axial gas mixing High-density particles

Comparative New Insight into the Tectonic Origin of Folds and Thrust Faults of an Extensional Basin: Soke-Kusadasi Basin, Aegean, Western Turkey

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth Science 2020年第3期31卷 582-595页

作者： Bulent dogan Department of Geological Engineering Engineering FacultyUniversity of KocaeliUmuttepe CampusIzmit-Kocaeli 41001Turkey

The Aegean area of the western Anatolian region of Turkey,controlled by the low-angle detachment normal fault system,forms an extensional province,the West Anatolian Extensional Province(WAEP).The tectonic deformation which occurred in the Miocene Period,including the Plio–Quaternary Period has created different structures in both the basement rocks and intra-basin deposits of the *** of these structures,high-angle normal faults,controls the supradetachment Soke-Kusadasi Basin(SKB).Within this basin,there are folds with different axes and thrust faults with a north-northwestnortheast(N,NW,NE)*** folds and thrust faults in the SKB deformed the sedimentary structures of intra-basin *** folds and thrust faults,which caused the rotation of beddings and imbrications in the SKB,are mainly associated with the tectonic process of the low angle detachment normal fault,which affected the SKB and the Aegean part of western *** the SKB,during the process of extensional deformation associated with primary low angle detachment normal faulting,the ramp-flat and inversion geometry observed in the basement rocks and basin deposits of the crust caused folds and thrust faults in only intra-basin *** the WAEP,it is determined for the first time that the folds and thrust faults causing limited shortening deformed the Plio–Quaternary sediments.

关键词： low angle detachment normal fault high angle normal fault fold thrust fault bedding extensional supradetachment basin

Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第2期11卷 106-114页

作者： Bülent ZDALYAN Oguzhan dogan Department of Automotive Education Karabuk UniversityKarabuk 78050Turkey

In this study, an electro-mechanical valve （EMV） system for the intake valve ofa fottr stroke, single cylinder, overhead valve and spark ignition （SI） engine was designed and constructed. An engine with the EMV system and a standard engine were tested to observe the effects of the EMV on engine performance and emissions at different speeds under full load. The EMV engine showed improved engine power, engine torque and break specific fuel consumption （BSFC）. A 66% decrease in CO emissions was also obtained with the EMV system, but hydrocarbons （HC） and NOx emissions increased by 12% and 13% respectively.

关键词： Semi electro-mechanic Camless engine Electro-mechanic engine valve Engine performance Emissions

Optical Characterization of Amorphous Hydrogenated Carbon(a-C:H)Thin Films Prepared by Single RF Plasma Method

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2015年第6期17卷 488-495页

作者： dogan MANSUROGLU Kadir GOKSEN Sinan BILIKMEN Physics Department Middle East Technical University Physics Department Duzce University

Methane （CH4） plasma was used to produce amorphous hydrogenated carbon （a- C：H） films by a single capacitively coupled radio frequency （RF） powered plasma system. The system consists of two parallel electrodes： the upper electrode is connected to 13.56 MHz RF power and the lower one is connected to the ground. Thin films were deposited on glass slides with different sizes and on silicon wafers. The influence of the plasma species on film characteristics was studied by changing the plasma parameters. The changes of plasma species during the deposition were investigated by optical emission spectroscopy （OES）. The structural and optical properties were analyzed via Fourier transform infrared （FTIR） spectroscopy, X-ray diffraction （XRD） and UV-visible spectroscopy, and the thicknesses of the samples were measured by a profilometer. The sp3/sp2 ratio and the existing H atoms play a significant role in the determination of the chemical properties of thin films in the plasma. The film quality and deposition rate were both increased by raising the power and the flow rate.

关键词： a-C:H thin film plasma deposition methane plasma sp3/sp2 ratio

Experimental analysis on the nonlinear behavior of DC barrier discharge plasmas

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2017年第1期19卷 44-50页

作者： dogan MANSUROGLU Ilker Umit UZUN-KAYMAK Physics Department CanakkaleOnsekiz Mart University Canakkale 17100 Turkey Physics Department Middle East Technical University Ankara 06800 Turkey

Nonlinear behavior of glow discharge plasmas is experimentally *** glow is generated between a barrier semiconductor electrode,Chromium doped namely Gallium Arsenide（Ga As：Cr）,as a cathode and an Indium–Tin Oxide（ITO） coated glass electrode as an anode,in reverse *** planar nature of electrodes provides symmetry in spatial *** discharge behaves oscillatory in the time domain,with single and sometimes multiperiodicities in plasma current and voltage *** this paper,harmonic frequency generation and transition to chaotic behavior is *** observed current–voltage characteristics of the discharge are discussed in detail.

关键词： DC glow discharges nonlinear behavior digital signal analysis