This study was performed to determine the concentrations
of some trace metals (Cd, Cu, Pb, Ni, Zn, and Fe) in
Holothuria tubuosa (Gmelin, 1788) belonging to Echinoderm
species and in sediments that they live at three different stations
(Gelibolu, Umur Bey/Lapseki, and Dardanos) on
Dardanelles Strait between April 2013 and March 2014. The
mean trace metal concentrations determined in H. tubulosa
and sediment were as follows: Cd 0.18 mg/kg, Cu 2.43 mg/
kg, Pb 2.09 mg/kg, Ni 14.58 mg/kg, Zn 16.86 mg/kg, and Fe
73.46 mg/kg and Cd 0.70 mg/kg, Cu 5.03 mg/kg, Pb
14.57 mg/kg, Ni 27.15 mg/kg, ...Daha fazlası
THE EFFECT OF PULSED ELECTROMAGNETIC FIELDS FOR IN VITRO WOUND HEALING EXPOSURE SYSTEMS
SUMMARY
Electromagnetic fields have achieved important role as stimulator and therapeutic facility in biology and medicine (Blank & Findl, 2013). The effects of low magnitude, low frequency pulsed electromagnetic fields have been a period of study since past few decades, which was mainly on the treating soft tissue injuries, skin ulcers, nonuniform bone fractures and degenerative nerve healing (Hug & Röösli, 2012b). Chronic wounds are a major healthcare problem for patient morbidity and contribute signi ...Daha fazlası
The understanding of sediment transport with fluid in pipes is one of the important issues in hydraulics engineering. If the fluid velocity is lower than a critical value, a stationary cuttings bed develops, which may cause excessive head loss. In this study, a Fuzzy Logic (FL) model is developed to estimate stationary cuttings bed thickness inside the annulus. Experimental data is collected from literature in order to train proposed models. Results showed that the cuttings bed thickness could be estimated using the developed model with a reasonable accuracy when compared with the experimental ...Daha fazlası
Audiometry is the technique to identify the nature of hearing loss and to determine the threshold of hearing by recording responses of the patient after presenting him with auditory stimuli with varying intensity levels. There are different audiometric techniques and procedures used for achieving this. The vast majority of medical devices found in the marketplace as a commercial product for the field of audiology have been developed for clinical limited testing. These devices cannot be used for purposes other than those specified by the manufacturer. This has serious limitations in the experim ...Daha fazlası
SUMMARYPlastics have a wide application area in our daily life because of the properties such as being inexpensive, lightweight and easy to take shape. Plastics can lead to some problems such as endangering human health and reducing the life of the material, because the plastic surfaces are so available for microorganisms to form a biofim by holding onto the surface easily. Researches for antibacterial materials containing various natural and inorganic substances has been increased and become more important because of that people are often infected by microorganisms such as bacteria, molds, ye ...Daha fazlası
Resident satisfaction is an important issue in urban regeneration projects (URP). In the western countries, the resident satisfaction from residential environments continues to be an important topic for researchers and the data found well preserved and integrated into real projects. In Turkey, yet, there is little research on residential satisfaction in many urban regeneration projects implemented. In Turkey, up to the present, research carried out about urban analysis and residential satisfaction needed in any urban regeneration project, is little evident in implemented UR projects.
Izmir is ...Daha fazlası
Cellulose is the most abundant organic polymer on earth. It is naturally regenerated by forests and cotton plantations with a speed of 10 billion metric tons per year regularly. Not only its natural reproduction makes it ecologically beneficial but also its biological degradability makes cellulose an ‘eco-friendly material’. Applications of cellulose is limited due to its insolubility in water. Contrarily, its water-soluble derivatives, especially cellulose ethers, are found in nearly all the products we are using in our daily life.
Although cellulose is the main raw material for producing ce ...Daha fazlası
Scorpionfish (Scorpaena porcus) is a demersal fish
species commercially important for its of which meat is tough
and delicious. The aim of this study was to determine heavy
metal (Al, Cu, Ni, As, Cd, Hg, Pb, U) concentrations in this
fish species which is traditionally consumed in the Black Sea
Area and, to compare the concentrations of various toxic elements
in different organs of the fish specimens (muscle, liver,
gill, and skin). Within this scope, the mineralization was performed
using microwave digestion system. Thirty-two scor
pionfish caught from Sinop Inland Port during 2010 w ...Daha fazlası
This thesis presents both control of mobile robots that can move by using collective motion algorithm and simulation of the robots during the motion. The orientation of the robots was controlled remotely by one user during the collective motion. The transmission of orientation data from the remote controller to the robots was done by using XBee modules. The control algorithm of collective motion was developed by using individual-based model. Two modes are considered during the control. These modes are search and swarm mode.
The collective motion was performed by robots that are moving with re ...Daha fazlası
Photocatalytic degradation and complete mineralization of toxic organic compounds in water, soil, and air in the presence of semiconductor materials have received much attention over the last decades. Electronic structure of semiconductors is characterized by a filled valence band and an empty conduction band. When the semiconductor is irradiated with light of sufficient energy corresponding to or exceeding its band gap, an electron is promoted into the conduction band, leaving a hole in the valence band. The electrons and holes are good reductants and powerful oxidants, respectively, and they ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.