TOWARDS ULTRAFAST LASER MICROMACHINING OF X-RAY GRATINGS AND CREATION OF SUB-MICRON HOLE PATTERNS, COMPARISON OF RESULTS WITH BESSEL AND GAUSSIAN BEAMS

We compare micromachining results with Gaussian and Bessel beams using an UV picosecond laser system and demonstrate feasibility to produce tungsten gratings for x-ray interferometry medical imaging, and sub-micrometer size hole patterns.The advantages of Bessel beams compared to Gaussian beams, are demonstrated for micromachining of rectangular sh

This paper investigates the pre-modern urban development of Medina during the Ottoman reign within the framework of the Ottoman administration of the Arab provinces.Specifically, the spatial organization of Medina is investigated based on multiple visual, cadastral and historical sources.Although Medina was remote from the center of political power

Composite structures (SiC/UHMWPE/TC4; SiC/TC4/UHMWPE) were jerome brown jersey designed using silicon carbide (SiC)ceramics, ultra-high-molecular-weight polyethylene (UHMWPE) laminate, and titanium alloys (TC4s).Penetration experiments and numerical simulations were carried out to study the anti-penetration mechanism and energy characteristics of t

The article considers the formative period of click here the Kazan Department of the Russian Society for Animal Welfare and the areas of its activities, the history of collaboration between the organization and the Kazan mullah, Muslim scholar Shigabutdin Marjani, and the manuscript Marjani wrote on the humane treatment of animals.In addition, the

Basal-like breast carcinomas (BLCs) present with extratumoral click here lymphovascular invasion, are highly metastatic, presumably through a hematogenous route, have augmented expression of CD44 oncoprotein and relatively low levels of retinoblastoma (Rb) tumor suppressor.However, the causal relation among these features is not clear.Here, we show