Imidazole derivatives have a wide range of biological applications, including antifungal, antibacterial, antiviral, antioxidant, antiparasitic, and anticancer compounds. As a result, various imidazole derivatives have been produced and developed as potential drugs for the treatment of a variety of diseases in recent years. In this study, we describe the synthesis of new 1,2, 4, 5- tetrasubstituted imidazole’s (5a-d) with pyrazole-3-one moiety by using an ultrasonicate synthesis and compare with traditional methods, utilizing a simple synthetic process and an easy purification procedure. Ultr
The delivery of public infrastructure through the PPP scheme has been increasing in recent years. However, the problem regarding lack of funding was discovered when the project used the PPP scheme. Due to this limited funding capacity from both private and public sectors, alternative funding sources are critical to financing more infrastructure projects in the future. With the potential to reach IDR 180 trillion/year, cash waqf is seen as an innovative funding scheme for PPP projects in Indonesia. Therefore, this study aims to develop cash waqf as the funding source for the PPP scheme. An in-d
The principle of monopulse interferometer direction finding systems DF methods relies on locating the source of emission with a single received pulse. They measure the angle of arrival (AOA) of the intercepted signals using phase detectors (PD). PD measures the phase difference due to antenna spacing. In digital phase detectors, dead and blind zones caused by gate propagation delay are the most challenging factors. They cause sectors of error in phase differences measurements. In this paper, a digital phase detector using two XOR gates forming two channels has been presented. The dead and blin
In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, and the whole process of the stress–strain curve of the specimen was obtained. The results show that the thickness of the GFRP tube has the most significant effect on the mechanical properties. The thickness of the 7 mm tube is 4.3 times the axial ultimate stress and 21.5 times the ultimate strain of the unconstr
Steel-spring-floating slab tracks are widely used in subway lines. It is necessary to analyze and study the vibration damping and transmission characteristics of the steel-spring-floating slab track in various frequency bands under the action of train loads. A steel-spring-floating slab track and ordinary monolithic track tunnel sites with similar line conditions on straight and curved segments were selected. The vibration signals of rail, track bed, and tunnel walls were collected and the analysis results of vibration damping and vibration transmission between the steel-spring-floating sla