Covid19-pandemic has had a profound impact on the way we live and social reality in world around us. Except for enormous strain public health of individuals, it affected functioning to great extent, at least temporarily. It sped up digitalization forced activities transfer digital realm an unprecedented level. simultaenously confined actors their geographical localities. In all this, offered op...

There is broad agreement that cells reconfigure their microtubules through rapid bouts of assembly and disassembly, as described by the mechanism known as dynamic instability. However, many cell types have complex patterns of microtubule organization that are not entirely explicable by dynamic instability. There is growing evidence that microtubules can be moved into new patterns of organizatio...

The objective of this research is to compare the cutting parameters of turning operation the work pieces of medium carbon steel (AISI 1045) by finding the longest tool life by Taguchi methods and Response Surface Methodology: RSM. This research is to test the collecting data by Taguchi method. The analyses of the impact among the factors are the depth of cut, cutting speed and feed rate. This r...

An improved algorithm for the computation of the intersection curve of two general parametric surfaces is presented. The introduced subdivision algorithm follows a divide-and-conquer-approach. For each pair of patches, it rst checks if the corresponding bounding volumes intersect. If they intersect, then it tries to nd dispensable parts of one patch (and the corresponding parts in the parameter...

was serious. It was an incised wound measuring about 4^ inches in length, which had chipped the bone and caused damage to the brain. On examination of this wound three pieces of bone and about one drachm in weight of brain matter were found at its bottom. The cut was a slanting one. No wound of the dura mater, whence the brain matter might have escaped, could be detected. Owing to the sloping n...

PURPOSE The purpose of this study is to evaluate and compare mitomycin C (MMC) absorption and delivery in different materials used in filtering surgery. METHODS This is an in vitro study comparing polyvinyl alcohol triangular sponges (TS6, TS8), polyvinyl alcohol fluid wicks (EFW), and absorbable gelatin sponges (AGS3, AGS5), from which five different types of transport units were obtained. S...

In flow visualization, integral surfaces are of particular interest for their ability to describe trajectories of massless particles. In areas of swirling motion, integral surfaces can become very complex and difficult to understand. Taking inspiration from traditional illustration techniques, such as cut-aways and exploded views, we propose a surface analysis tool based on surface splitting an...

The nesting problem is an irregular two-dimensional cutting problem where the shapes of the pieces to cut and the master surfaces are irregular in shape and different in size. In particular, we consider nesting problems where the master surface could contain defects. Some of them can be accepted (i.e., incorporated) in certain types of pieces, while other defected areas must be avoided. The pro...

background and objectives: the genus johrenia belongs to umbelliferae family and contains five species that are endemic to iran. johrenia paucijuga grows widely in the north-west, west and center of iran. so far, there has been no research about phytochemistry of j. paucijuga. in the present study, phytochemicals of the plants have been isolated and their structures have been elucidated. method...

Abstract Many results about mass partitions are proved by lifting $\mathds {R}^d$ to a higher-dimensional space and dividing the into pieces. We extend such methods use arguments polyhedral surfaces. Among other results, we prove existence of equipartitions $d+1$ measures in parallel hyperplanes $d+2$ concentric spheres. For whose supports sufficiently well separated, where one can cut fixed (p...