Development of MWCNT nano-composite materials as gas sensor Çok duvarlı karbon nanotüpler ile nanokompozit malzemelerin gaz sensörü olarak geliştirilmesi

Uğur Acar

xx, 85 sayfa : şekil, tablo 29 cm.

Investigating the antibacterial activity of antimicrobial peptide and silicate integrated flexible biomaterial Antimikrobiyal peptit ve silikat katkılı fleksible biyomalzemenin antibakteriyel etkinliğinin incelenmesi

Coşkun, İhsan

ABSTRACTOsteomyelitis is a disease in which the process of bone destruction and loss is caused by microorganisms. Osteomyelitis has an increasing incidence rate that could cause chronic and acute infections. Bone infection has caused recurrent and permanent damage in 40 of the patients. 2-5 of infections caused by medical devices used in orthopedic surgical operations are osteomyelitis. More than half of osteomyelitis cases are caused by gram-positive bacteria such as Staphylococcus aureus and Staphylococcus epidermidis. In order to prevent the occurance of osteomyelitis due to the medical dev ...Daha fazlası

Assessment of Fouling in Plate Heat Exchangers with Machine Learning Algorithms

Ceren VATANSEVER

Fouling is the accumulation of undesired particles on heat transfer surfaces which affects the heat transfer performance of a heat exchanger negatively. The accumulation of these particles prevents heat from being transformed through the heat exchangers by generating a fouling layer-like insulation. The main aim of the thesis is to investigate the machine learning algorithms to classify and predict the fouling status of PHE used in combi-boilers, to generate the background of the predictive maintenance, besides investigating the fouling effect on PHEs in terms of heat transfer and energy consu ...Daha fazlası

Manufacturing and Characterization of Peptide Coated Polylactic Acid Based Composites for Various Medical Applications

Metehan ATAGÜR

Within the scope of this thesis, PLA-based composites have been developed and coated with peptide to increase biocompatibility for temporary implant applications and PLA biocomposite materials have been produced. HA and β-TCP were used as additive materials, and PLLA and PDLA polymers were used as polymer matrix. The main purpose is to obtain the composite with the best mechanical properties and to improve the biocompatibility properties as a result of coating this final material with peptide. In the first stage, 10% HA (PLA-10 HA), 10% β-TCP (PLA-10TCP) and 5% HA + 5% β-TCP (PLA-5TCP-5HA) are ...Daha fazlası

Investigation of the Effect of Electrode Material on Antibacterial Activity in Plasma Treatment with Dielectric Barrier Discharge

Merve Gül

Plasma is an ionized gas generated under an electric field that contains photons, free electrons, ions, free radicals, and reactive oxygen/nitrogen species (RONS). Cold atmospheric plasma (CAP) is generated in the cold form under a high electric field at atmospheric pressure. CAP is generated using two methods, Dielectric Barrier Discharge (DBD) and plasma jet. In the DBD method, the electrode configuration, shape, material, and substance from which the dielectric barrier is made are important. Beyond the electrode design and geometry, the barrier and electrode materials can also impact the re ...Daha fazlası

Effect of e-Health Literacy on the Fear of COVID-19 and Attitudes Towards Protection: A Cross-Sectional Study

Objective: The aim of this study was to evaluate the predictive effect of the e-Health literacy level of individuals on attitudes towards protection from COVID-19 and the level of fear during the COVID-19 pandemic. Material and Method: The population of this cross-sectional study included individuals who could be reached through social media channels (Facebook, Instagram, WhatsApp) and e-mail between July and October 2020, and the sample of the study consisted of 522 literate individuals who had internet access and agreed to participate in the study. Data were collected using the personal ...Daha fazlası

An Analysis of Accidents at Work in “Core” Tourism Industries

GÜLŞAH AKKUŞ

41 adet powerPointten oluşmaktadır.

Geometrical Optimization of Dimpled Double-Pipe Heat Exchangers for Nanofluid-based Natural Circulation Loops Operating at Lower Temperatures

Nur Çobanoğlu

Excessive use of global energy sources causes negative environmental impacts and a reduction in the available energy resources. Therefore, energy efficiency is the main scope of engineering studies. Since household refrigeration accounts for a large portion of the energy consumption rate in buildings, several innovative techniques have been developed to improve the energy efficiency of vapor compression refrigeration systems. Suction line heat exchangers are considered one of these techniques and they are used to avoid the presence of liquid at the compressor and to prevent sweating on the suc ...Daha fazlası

Investigation of the Relationship between COVID-19 Illness Perceptions and Vaccine Attitudes of Midwives and Nurses Working in the Field of Women's Health

Objective: It is known that negative attitudes toward COVID-19 vaccines and unwillingness to vaccinate are higher in women than in men. Therefore, it is seen that the attitude of midwives and nurses working in the field of women's health toward vaccination is important in influencing women's attitudes toward vaccination. This study aims to investigate the relationship between COVID-19 disease perceptions and attitudes toward vaccination of midwives and nurses working in the field of women's health. Material and Method: The study was conducted in March 2021 in hospitals and primary healthcare i ...Daha fazlası

The Relationship Between Maternal Chronic Disease, Infection, and Having a Child with Autism Spectrum Disorder

Objective: The aim of the study was to evaluate the relationship between prenatal chronic diseases, infection, and autism spectrum disorder. Material and Method: Retrospective, cross-sectional and comparative research design was used. The sample was conducted with 99 mothers for the group, 44 of whom had a child with autism spectrum disorder and 55 of whom had a child with non-autism spectrum disorder. Data were collected from mothers between October 2020 and January 2021 via online methods (Facebook, Whatsapp, and Instagram). The study data was collected with a questionnaire form and the Chil ...Daha fazlası

Evaluation of Psychological Symptom Differences Between Disabled and Non-Disabled Individuals

Objective: The aim of this study was to evaluate the differences in psychological symptoms between disabled and non-disabled individuals. Material and Method: This paper conducts a multi-facet analysis (depression, anxiety, negative self, hostility and somatization) on disabled people for the first time. This study included 24493 people (non-disabled=23391, disabled=1102) from 9 demographic regions in Turkey and participants in the study were 18 years or older. Socio-demographic information form and Brief Symptom Inventory (BSI) were used as data collection tools. The participants' scores fr ...Daha fazlası

Dynamics of Axisymmetric Drops Impacting onto Heterogeneous Surfaces

Atalay SEÇER

The way a droplet behaves when it lands on a surface depends on the characteristics of the surface and the flow conditions of the droplet. It can deposit, rebound, splash, etc. There is delimited research on how surface roughness and chemical composition affect the deformation of droplets upon impact, in comparison to the studies done on smooth surfaces. Our model uses two-phase flow to simulate the axisymmetric motion of droplets over surfaces with heterogeneities by combining the Navier-Stokes equations for motion with the Cahn-Hilliard equation for tracking the phase-field. We integrate the ...Daha fazlası