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The Predictive Role of New Markers in Early Diagnosis of Acute Kidney Injury in Patients with Acute Pancreatitis

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Numerical Prediction of Total Resistance Using Full Similarity Technique

Open Journal of Nephrology（肾脏病） 2020年第3期

作者： ferdi karagöz Dede Şit Ayşegül Kırankaya Yasemin Aker karagöz ArifSava Yıldızİpek Bennur Esen Atay Ahmet Engin Atay

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China Ocean Engineering 2019年第4期33卷 493-502页

作者： Savas SEzEN ferdi CAKICI Department of Naval Architecture and Marine Engineering Yildiz Technical University

Model tests are often conducted by researchers in a real or a numerical towing tank to calculate residuary resistance of a ship with the aid of Froude similarity. Common ITTC-1957 formula is usually employed to calculate frictional resistance. As computer technologies develop over time, CFD tools are used for calculating total resistance of a ship at full scale without establishing any dynamic similarities. In this paper, both Froude and Reynolds similarities are numerically implemented to four different model scales by using virtual fluids. The total resistance at different Fr numbers calculated by the numerical study is validated against the experimental data of DTMB 5512 (L=3.048 m) model hull. The results show that establishing Froude and Reynolds similarities together in numerical simulation is possible in principle. To determine whether it has advantages for prediction of full-scale ship total resistance by employing this method, it is also examined the model scale with the same number of elements and Reynolds number of the full-scale ship. Results show that numerical calculation of total resistance for a full-scale ship in a model scale by defining virtual fluids has only slight advantages on the prediction of residuary resistance. Additionally, no advantage in the calculation of frictional resistance is observed.

关键词： total resistance Froude and Reynolds similarities DTMB 5512 CFD

A comparative assessment of rock mass deformation modulus

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International Journal of Mining Science and Technology 2015年第5期25卷 735-740页

作者： Kadir Karaman ferdi Cihangir Ayhan Kesimal Department of Mining Engineering Karadeniz Technical University

Deformation modulus of a rock mass(E_m) is one of the most important design parameters in construction of rock engineering projects such as underground ***,difficulties are frequently encountered during in-situ tests which are also time-consuming and expensive for determining this *** E_m is often estimated indirectly from proposed equations by different researchers,many of these equations cannot be used in case of problematic rock conditions(thinly bedded,highly jointed rock masses,etc.) as high quality core samples are *** study aims to explore more practical and useful equation for E_m estimation using Rock Quality Designation(RQD) and point load index *** were made between available empirical equations and the proposed E_m equation in terms of the estimation *** comparison tests(ANOVA) showed that E_m can be reliably estimated using proposed equation especially at the preliminary stages of projects.

关键词： Rock mass deformation modulus RQD RMR Q RMi Point load index

A fuzzy-logic-based approach to accurate modeling of a double gate MOSFET for nanoelectronic circuit design

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Journal of Semiconductors 2012年第9期33卷 43-49页

作者： F.Djeffal A.ferdi M.Chahdi LEA Department of ElectronicsUniversity of Batna05000 BatnaAlgeria LEPCM Department of ElectronicsUniversity of Batna05000 BatnaAlgeria

The double gate （DG） silicon MOSFET with an extremely short-channel length has the appropriate fea- tures to constitute the devices for nanoscale circuit design. To develop a physical model for extremely scaled DG MOSFETs, the drain current in the channel must be accurately determined under the application of drain and gate voltages. However, modeling the transport mechanism for the nanoscale structures requires the use of overkill meth- ods and models in terms of their complexity and computation time （self-consistent, quantum computations ）. Therefore, new methods and techniques are required to overcome these constraints. In this paper, a new approach based on the fuzzy logic computation is proposed to investigate nanoscale DG MOSFETs. The proposed approach has been implemented in a device simulator to show the impact of the proposed approach on the nanoelectronic cir- cuit design. The approach is general and thus is suitable for any type ofnanoscale structure investigation problems in the nanotechnology industry.

关键词： nanoscale circuit DG MOSFET fuzzy modelling computational cost circuit design

Precise synthesis of discrete and dispersible carbon- protected magnetic nanoparticles for efficient magnetic resonance imaging and photothermal therapy

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Nano Research 2016年第5期9卷 1460-1469页

作者： An-Hui Lu Xiang-Qian zhang Qiang Sun Yan zhang Qingwei Song ferdi Schuth Fang Cheng State Key Laboratory of Fine Chemicals School of Chemical Engineering Faculty of Chemical Environmental and Biological Science and Technology Dalian University of Technology Dalian 116024 China Dalian Medical University affiliated No. I Hospital Dalian 116021 China Max-Planck-lnstitut fur Kohlenforschung Kaiser-Wilhelm-Platz 1 D-45470 Mulheim an der Ruhr Germany State Key Laboratory of Fine Chemicals School of Pharmaceutical Science and Technology Dalian University of Technology Dalian 116024 China

Carbon-protected magnetic nanoparticles exhibit long-term stability in acid or alkaline medium, good biocompatibility, and high saturation magnetization. As a result, they hold great promise for magnetic resonance imaging, photothermal therapy, etc. However, since pyrolysis, which is often required to convert the carbon precursors to carbon, typically leads to coalescence of the nanoparticles, the obtained carbon-protected magnetic nanoparticles are usually sintered as a non-dispersible aggregation. We have successfully synthesized discrete, dispersible, and uniform carbon-protected magnetic nanoparticles via a precise surface/interface nano-engineering approach. Remarkably, the nanoparticles possess excellent water-dispersibility, biocompatibility, a high T2 relaxivity coefficient （384 mM^-1·s^-1）, and a high photothermal heating effect. Furthermore, they can be used as multifunctional core components suited for future extended investigation in early diagnosis, detection and therapy, catalysis, separation, and magnetism.

关键词： magnetic nanoparticles carbon Fe3O4 magnetic resonanceimaging (MRI) colloidal suspensions photothermal therapy

Fate Processes of Chlorobenzenes in Soil and Potential Remediation Strategies: A Review

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Pedosphere 2017年第3期27卷 407-420页

作者： ferdi BRAHUSHI Fredrick Orori KENGARA SONG Yang JIANG Xin Jean Charles MUNCH WANG Fang Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil Science Chinese Academy of Sciences Department of Agroenvironment and Ecology Agricultural University of Tirana Department of Chemistry Maseno University Center of Life and Food Sciences Technical University Munich

Chlorobenzenes （CBs） are a group of organic pollutants that pose a high environmental risk due to their toxicity, persistence and possible transfer in the food chain. Available data in literature show that CBs axe detected in different environmental compartments such as soil, water, air and sediment. The widespread presence of CBs in the environment is related to their former extensive use in agriculture and industry. Some CBs are ranked in the list of priority pollutants by the Stockholm Convention, and their reduction or elimination from the environment is therefore of high importance. Environmental risk assessment of CBs requires knowledge on the role and importance of the main environmental fate processes, especially in soil. Furthermore, development of remediation strategies for reduction or elimination of CBs from the environment is related to the enhancement of fate processes that increase their dissipation in various environmental compartments. The main objectives of the current review were to present up-to-date data on fate processes of CBs in the soil environment and to explore possible remediation strategies for soils contaminated with CBs. Dechlorination of highly-chlorinated benzenes is the main degradation pathway under anaerobic conditions, leading to the formation of lower-chlorinated benzenes. Biodegradation of lower-chlorinated benzenes is well documented, especially by strains of adapted or specialized microorganisms. Development of techniques that combine dechlorination of highly-chlorinated benzehes with biodegradation or biomineralization of lower-chlorinated benzenes can result in useful tools for remediation of soils contaminated with CBs. In addition, immobilization of CBs in soil by use of different amendments is a useful method for reducing the environmental risk of CBs.

关键词： biodegradation chlorinated benzenes environmental risk immobilization mineralization organic pollutant reductivedechlorination

Preface to Special Issue of Chinese Journal of Catalysis on the 2nd International Congress on Catalysis for Biorefineries （CatBior 2013）

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催化学报 2014年第5期35卷 601-601页

作者： Tao zhang Avelino Corma ferdi Schüth Dalian Institute of Chemical Physics Chinese Academy of Sciences Universidad Politecnica de Valencia Department of Heterogeneous Catalysis Max-Planck-Institut fur Kohlenforschung

Today’s society is facing significant challenges from the depletion of oil reserves and the increase of CO;*** may provide a possible solution to this dilemma as it opens a new way to the sustainable production of fuels and chemicals from vast but nonfood renewable *** is expected to be a chief player in pursuit of new biorefinery technologies,just as it has been in the oil-refinery *** order to provide an ideal forum to present and discuss the state-of-the-art of the catalytic technologies in biomass processing,the International Congress on Catalysis for Biorefineries（CatBior）was initiated in 2011 in *** congress

关键词：生物反应器催化国际大会炼制二氧化碳排放量学报中国可持续生产

History of Semiconductor in relation to the power supplies

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History of Semiconductor in relation to the power supplies

第四届粤港澳大湾区真空科技创新发展论坛暨2020年广东省真空学会学术年会

作者： Kamel ferdi 深圳市恒运昌真空技术有限公司

The Invention of the Transistor in 1947,along with the electrical conductivity of semiconducting materials,herald in the development of ICs-Integrated Circuits and evolution of the semiconductor *** the 1970 s till the present,following Moore’s Law of doubling the number of transistors density in the IC every 18-24 months,we have witnessed how it has helped drove much of the changes in the supporting technologies as well.

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地外光催化CO_(2)转化

Chinese Journal of Catalysis 2023年第7期50卷 1-5页

作者：刘敬祥张超 ferdi Karadas 熊宇杰中国科学技术大学合肥微尺度物质科学国家研究中心化学与材料科学学院安徽合肥230026 马来西亚莫纳什大学工程学院化工学科多学科先进工程平台马来西亚毕尔肯特大学化学系和国家纳米技术研究中心土耳其

随着人类社会对CO_(2)排放引起的气候变化问题愈发关注,光催化CO_(2)转化因其能模拟自然界中的光合作用受到广泛研究,以帮助修复自然界中已被破坏的碳循环.光催化CO_(2)转化可以减少大气中的CO_(2)浓度,并合成具有高价值的碳氢化合物燃... 详细信息

随着人类社会对CO_(2)排放引起的气候变化问题愈发关注,光催化CO_(2)转化因其能模拟自然界中的光合作用受到广泛研究,以帮助修复自然界中已被破坏的碳循环.光催化CO_(2)转化可以减少大气中的CO_(2)浓度,并合成具有高价值的碳氢化合物燃料.近年来,随着地外空间发现了丰富储量的CO_(2)和水,科学家提出了在地外也可以进行光催化CO_(2)转化反应,进而在地外建立人工碳循环,为太空任务提供推进剂和生命保障.本文围绕光催化CO_(2)转化反应在地外空间应用的可行性进行探讨,阐述光催化CO_(2)转化的基本过程,包括CO_(2)分子的吸附与活化、半导体的激发、光生载流子的迁移和分离以及反应中间物种的稳定.同时,阐述了光催化CO_(2)转化在地外应用过程中可能存在的问题,具体包括光催化剂的来源问题、地外微重力问题、地外辐射问题以及温度与温差问题.随着近几年各国深空探测项目的提出与部署,在地外空间探究光催化CO_(2)转化建立人工碳循环的可行性已成为一项紧迫的任务.因此,本文展望了地外光催化CO_(2)转化的未来发展方向,具体包括(1)进一步提升光催化CO_(2)转化性能与选择性,(2)探究地外条件与因素对光催化CO_(2)转化过程的影响与(3)将光催化CO_(2)转化反应与其他技术匹配以拓宽相关的应用.

关键词：光催化 CO_(2)转化碳循环原位资源化利用碳氢燃料