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In this paper, a singular-feed circularly polarized (CP) metasurface antenna with broad impedance bandwidth is presented. The antenna consists of modified slots with a lattice of 3 × 3 square conductive patches. Modes are selected and excited by modified slot …

Chronically, the Nigerian pharmaceutical arena has witnessed a series of scandals, perhaps unprecedented level of unethical behaviors, cruelty or of a kind. These events have seriously shaken people’s belief. In general, such activities have left a black-hole …

Pseudomonas (P.) aeruginosa is Gram-negative an opportunistic human pathogen associated with nosocomial infections particularly immuno-compromised patients such as cystic fibrosis, cancer, and diabetes. This organism can also develop high-level intrinsic and a…

Korku, insanın kendi düşüncelerinden kaynaklanan bir duygudur. İnsanoğlunun beklenmedik ve öngörülmeyen bir durum karşısında zihninin yoğunlaşmasını sağlayan bir mekanizmadır. Bu duygunun ortaya çıkmasının nedeni, tehlike düşüncesinin uyandırdığı duygusal reak…

A microgrid is a power grid consists of distributed power generation units and loads. Microgrid is also a system that can operate in grid-connected mode and islanding (autonomous) mode. The control of distributed power generation units in microgrids is necessa…

Design and usage of Unmanned Aerial Vehicles (UAV) especially for military purposes has been rapidly increasing in recent years due to their capability to endure long flight durations without needing a crew and due to their low cost compared with the conventio…

Schiff bases are used as starting materials in the synthesis of important drugs, such as antibiotics, antiphlogistic, antiallergic and antitumor substances. On the industrial scale, Schiff bases have a wide range of applications, such as dyes and pigments. The…

A microgrid is a power grid consists of distributed power generation units and loads. Microgrid is also a system that can operate in grid-connected mode and islanding (autonomous) mode. The control of distributed power generation units in microgrids is necessa…

The design of experiments is a highly effective offline quality improvement method to optimize the existing and new processes or products. In the literature, standard experimental situations have been paid a lot of attention. In a number of non-standard experi…

A central composite design is a good choice for a spherical design region while providing high-quality predictions over the entire spherical design region. However, this design requires design variable settings outside the range of the design variables in the …

Geriye dönük adım akışı, ısı depolama kaplarının iç ve dış akışında veya güç dönüştürme sistemlerinin toplayıcıları gibi birçok cihazda önemli olup akışın karmaşık yapısı nedeniyle önemli geometrik modellerden biri olarak göze çarpmaktadır. Bu çalışmada, dikey…

Gaz türbini motorları, yakıcılar, ısıtma ve soğutma sistemleri gibi birçok mühendislik uygulamasında geriye dönük adım akışı nedeniyle ayrılma ve yeniden birleşme bölgeleri meydana gelmektedir. Bu bölgelerin kontrolü, ısı ve kütle transferi miktarını artırmak …

In this study, the effects nano-SiO2 and nano-Al2O3 on cement mortars were experimentally studied. The percentage of nano-powders were used as 1%, 3% and 5% into the material. Different types of analysis were used to nano-powder’s impact on the cement mortars.…

Nowadays, nature-inspired structural colorization takes increasing attention due to its exceptional optical properties. One-dimensional (1-D) photonic crystals are new kind of optical materials which can be used to obtain structural colorization. In recent yea…

Data Envelopment Analysis (DEA) is a non-parametric mathematical programming that uses multi inputs to produce multi outputs. It is investigated whether the decision making unit is effective or not. However, it has been debated for years that the results obtai…

Anti-thyroid drugs are relatively simple molecules known as thionamides, which contain a sulfhydryl group and a thiourea moiety within a heterocyclic structure [1]. Methimazole (1-methyl-2-mercaptoimidazole) is widely used drug in medicine for treatment of hyp…

Environment and climate change caused by human life negatively affects our world on a global scale. The need for sustainable technological solutions to minimize these disadvantages is becoming increasingly imperative. Nanotechnology is entering our lives at th…

The paper is deals with Glass Structures, used as a component of nonlinear shaping architectural forms in historical urban environment. These forms are treated as a city-event per analogies to Bernard Tschumi's theory of „event cities”. In this theory, the ess…

This study basically presents a review of robotic hands and its applications based on human hand motion. In the context of the review, different kinds of articles are analyzed. There are some hand motion-sensing methods, which are noncontact and direct contact…

This paper presents the theoretical aspect of the creep behavior in materials, particularly in metallic materials. Different creep mechanisms were displayed. The main models developed to determine or extrapolate the rupture time of materials were presented. So…