International Center for Hydrogen Energy Technologies

Zeytinburnu, Turkey

International Center for Hydrogen Energy Technologies

Zeytinburnu, Turkey
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PubMed | Kirikkale University, Bülent Ecevit University, Hacettepe University, Diskapi Yildirim Beyazit Education and Research Hospital and 4 more.
Type: Journal Article | Journal: Injury | Year: 2015

Ganoderma lucidum (G. lucidum) is a mushroom belonging to the polyporaceae family of Basidiomycota and has widely been used as a traditional medicine for thousands of years. G. lucidum has never been studied in traumatic spinal cord injury. The aim of this study is to investigate whether G. lucidum polysaccharides (GLPS) can protect the spinal cord after experimental spinal cord injury.Rats were randomized into five groups of eight animals each: control, sham, trauma, GLPS, and methylprednisolone. In the control group, no surgical intervention was performed. In the sham group, only a laminectomy was performed. In all the other groups, the spinal cord trauma model was created by the occlusion of the spinal cord with an aneurysm clip. In the spinal cord tissue, caspase-3 activity, tumour necrosis factor-alpha levels, myeloperoxidase activity, malondialdehyde levels, nitric oxide levels, and superoxide dismutase levels were analysed. Histopathological and ultrastructural evaluations were also performed. Neurological evaluation was performed using the Basso, Beattie, and Bresnahan locomotor scale and the inclined-plane test.After traumatic spinal cord injury, increases in caspase-3 activity, tumour necrosis factor-alpha levels, myeloperoxidase activity, malondialdehyde levels, and nitric oxide levels were detected. After the administration of GLPS, decreases were observed in tissue caspase-3 activity, tumour necrosis factor-alpha levels, myeloperoxidase activity, malondialdehyde levels, and nitric oxide levels. Furthermore, GLPS treatment showed improved results in histopathological scores, ultrastructural scores, and functional tests.Biochemical, histopathological, and ultrastructural analyses and functional tests reveal that GLPS exhibits meaningful neuroprotective effects against spinal cord injury.


Eroglu M.,International Center for Hydrogen Energy Technologies | Dursun E.,Marmara University | Sevencan S.,International Center for Hydrogen Energy Technologies | Song J.,University of Texas at Austin | And 2 more authors.
International Journal of Hydrogen Energy | Year: 2011

A photovoltaic/wind/fuel cell hybrid power system for stand-alone applications is proposed and demonstrated with a mobile house. This concept shows that different renewable sources can be used simultaneously to power off-grid applications. The presented mobile house can produce sufficient power to cover the peak load. Photovoltaic and wind energy are used as primary sources and a fuel cell as backup power for the system. The power budgeting of the system is designed based on the local data of solar radiation and wind availability. Further research will focus on the development of the data acquisition system and the implementation of automatic controls for power management. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.


Dursun E.,Marmara University | Ozalp G.Y.,International Center for Hydrogen Energy Technologies | Kilic O.,Marmara University
International Review of Electrical Engineering | Year: 2010

The proton exchange membrane fuel cell (PEMFC) which has low operating temperature, high power density and zero emission is the most suitable one for energy applications. In this study, two different PEMFCs membrane electrode assemblies (MEA) are tested in terms of electrical characteristics in different temperatures and humidity. Then these results are compared with improved PEMFCs electrical circuit model. This model is developed in MATLAB/Simulink®. © 2010 Praise Worthy Prize S.r.l. - All rights reserved.


Yazici M.S.,International Center for Hydrogen Energy Technologies | Lymberopoulos N.,International Center for Hydrogen Energy Technologies | Hatipoglu M.,International Center for Hydrogen Energy Technologies
ECS Transactions | Year: 2012

The International Center for Hydrogen Energy Technologies (ICHET) has been implementing measures to demonstrate potential benefits of "hydrogen and fuel cell systems" in developing countries. To achieve its mission, ICHET implements pilot demonstration projects, provides applied research and development funding, and organizes workshops, education and training activities together with industry for early adaptation. Project results from various demonstrations including fuel cell forklift, fuel cell based Uninterrupted Power Supply (UPS), an island project, and renewable energy systems integrated mobile house will be covered below. ©The Electrochemical Society.


Suha Yazici M.,International Center for Hydrogen Energy Technologies
International Journal of Hydrogen Energy | Year: 2010

To place hydrogen energy usage into proper perspective, International Center for Hydrogen Energy Technologies (ICHET) has been implementing measures to demonstrate potential benefits of the "hydrogen and fuel cell systems" in developing countries. Demonstration of technologies is the most important aspect of ICHET vision for the formation of an industry in the developing world. ICHET has embarked on a series of educational and laboratory activities designed to increase the knowledge and awareness of students and advanced researchers concerning hydrogen energy technologies. The state of the art fuel cell laboratory is available for joint technology development and demonstration activities. Internship activities facilitate knowledge transfer, exchange of information at regional, national and international levels and involve academics, researchers, experts and service providers. Collaboration is a key part of the organizational strategy for joint projects, funding and trainings in the field of hydrogen and fuel cells. © 2009 Professor T. Nejat Veziroglu.


Meryemoglu B.,Cukurova University | Hesenov A.,Cukurova University | Irmak S.,Cukurova University | Atanur O.M.,International Center for Hydrogen Energy Technologies | And 2 more authors.
International Journal of Hydrogen Energy | Year: 2010

Aqueous-phase reforming (APR) of real biomass was studied for production of hydrogen gas. Wheat straw, an abundant by-product from wheat production was used as representative lignocellulosic biomass. Wheat straw was hydrolyzed in an environmentally benign-sub critical water condition. APR experiments of wheat straw hydrolysates were performed using commercial catalysts which were made of Pt, Pd and Ru doped on carbon, activated carbon and alumina supports for production of hydrogen rich gas mixture. The activity and selectivity of two commercial raney-nickel catalysts were also monitored in terms of hydrogen production. Among the precious metal catalysts tested, activity of the metals for hydrogen production was in the following descending order: Pt > Ru > Pd. Results indicated that alumina support significantly lowered the catalytic performance of the catalysts. Based on whole catalyst material, raney-nickel catalysts were more active than supported precious metal catalysts tested. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.


Suha Yazici M.,International Center for Hydrogen Energy Technologies | Yavasoglu H.A.,International Center for Hydrogen Energy Technologies | Eroglu M.,International Center for Hydrogen Energy Technologies
International Journal of Hydrogen Energy | Year: 2013

Cross utilization of photovoltaic/wind/battery/fuel cell hybrid-power-system has been demonstrated to power an off-grid mobile living space. This concept shows that different renewable energy sources can be used simultaneously to power off-grid applications together with battery and hydrogen energy storage options. Photovoltaic (PV) and wind energy are used as primary sources and a fuel cell is used as backup power. A total of 2.7 kW energy production (wind and PV panels) along with 1.2 kW fuel cell power is supported with 17.2 kWh battery and 15 kWh hydrogen storage capacities. Supply/demand scenarios are prepared based on wind and solar data for Istanbul. Primary energy sources supply load and charge batteries. When there is energy excess, it is used to electrolyse water for hydrogen production, which in turn can either be used to power fuel cells or burnt as fuel by the hydrogen cooker. Power-to-gas and gas-to-power schemes are effectively utilized and shown in this study. Power demand by the installed equipment is supplied by batteries if no renewable energy is available. If there is high demand beyond battery capacity, fuel cell supplies energy in parallel. Automatic and manual controllable hydraulic systems are designed and installed to increase the photovoltaic efficiency by vertical axis control, to lift up & down wind turbine and to prevent vibrations on vehicle. Automatic control, data acquisition, monitoring, telemetry hardware and software are established. In order to increase public awareness of renewable energy sources and its applications, system has been demonstrated in various exhibitions, conferences, energy forums, universities, governmental and nongovernmental organizations in Turkey, Austria, United Arab Emirates and Romania. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Dursun E.,Marmara University | Eroglu M.,International Center for Hydrogen Energy Technologies | Yazici S.,International Center for Hydrogen Energy Technologies | Kilic O.,Marmara University
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2012

This study presents a techno-economic evaluation of a stand-alone hybrid power system. The system consists of three energy sources, photovoltaic (PV) panels, a wind turbine and a proton exchange membrane fuel cell (PEMFC). PV and wind turbine is the main sources for the system and the fuel cell performs as a backup power source. Therefore, continuous energy supply needs energy storing devices. © Sila Science.


Yazici M.S.,International Center for Hydrogen Energy Technologies
International Journal of Hydrogen Energy | Year: 2011

The International Centre for Hydrogen Energy Technologies (ICHET) has been implementing measures to demonstrate potential benefits of "hydrogen and fuel cell systems" in developing countries. ICHET is a United Nations Industrial Development Organization (UNIDO) project funded by the Turkish Ministry of Energy and Natural Resources. To achieve its mission, ICHET implements pilot demonstration projects, provides applied research and development funding, and organizes workshops, education and training activities. Long term objective of the centre are to show implementation of hydrogen energy technologies with renewable energy systems and encourage local industries to manufacture similar systems for commercial applications. Support has been provided to select industrial partners in Turkey for developing prototypes including a fuel cell forklift, a fuel cell boat, a fuel cell passenger cart, renewable energy systems integrated mobile house, fuel cell based Uninterrupted Power Supply (UPS) installations. As more and more systems are demonstrated, public awareness of applications of hydrogen and fuel cell technologies will increase. ICHET has polymer electrolyte membrane (PEM) fuel cell testing capabilities together with analytical equipment to conduct fuel cell, hydrogen production and storage research. These facilities are being used for educational purposes with hundreds of engineers trained to date. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Acikgoz B.,International Center for Hydrogen Energy Technologies | Celik C.,Kocaeli University
International Journal of Hydrogen Energy | Year: 2012

In this paper, the performance and emission characteristics of a conventional twin-cylinder, four stroke, spark-ignited (SI) engine that is running with methane-hydrogen blends have been investigated experimentally. The engine was modified to realize hydrogen port injection by installing hydrogen feeding line in the intake manifolds. The experimental results have been demonstrated that the brake specific fuel consumption (BSFC) increased with the increase of hydrogen fraction in fuel blends at low speeds. On the other hand, as hydrogen percentage in the mixture increased, BSFC values decreased at high speeds. Furthermore, brake thermal efficiencies were found to decrease with the increase in percentage of hydrogen added. In addition, it has been found that CO 2, NO x and HC emissions decrease with increasing hydrogen. However, CO emissions tended to increase with the addition of hydrogen generally increase. It has been showed that hydrogen is a very good choice as a gasoline engine fuel. The data are also very useful for operational changes needed to optimize the hydrogen fuelled SI engine design. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

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