The distribution of curvature and of bending speed along the cell's growing region are studied during steady state phototropic bending. At the start, elemental bending speed parallels the known axial distribution of growth rate. Hence regional phototropic sensitivity is initially determined by the local growth rate, and unilateral visible light acts proportionally at all levels of the growth zo...

The hoes are widely used in the farms and home gardens in the United States. Many existing hoes are not ergonomically designed because they require a lot of back bending and wrist bending during use. Back bending often causes lower back injuries, and wrist bending often causes carpal tunnel syndrome. It can be very expensive to cure these injuries. The objective of this project is to reduce bac...

DNA-bending flexibility is central for its many biological functions. A new bending restraining method for use in molecular mechanics calculations and molecular dynamics simulations was developed. It is based on an average screw rotation axis definition for DNA segments and allows inducing continuous and smooth bending deformations of a DNA oligonucleotide. In addition to controlling the magnit...

The paper presents a method to establish performance-based fibre design of high-strength micro steel fibres for ultra-high-performance concrete (UHPC). considers effects layout, orientation, and type loading (quasi-static cyclic) expands the current approach using experiences suitability testing results. is based on so-called utilization rate, which determined via pullout tests in UHPC under qu...

This paper investigated the influence of altitude and flight speed on loads arising elastic wing a turbojet aircraft conventional layout, which falls into turbulent conditions. The structure is modeled by beams with appropriate weight stiffness distribution. Performed modal analysis design examined number calculated tones own oscillations loading an wing. Aerodynamic forces moments are determin...

Recently there has been interest in DWDM-based optical networks that are assumed to employ exactly two working fibers uniformly on every span (or “link”). At the fiber level such networks are referred to as homogeneous networks. An interesting and highly efficient strategy for protection of such networks is to use a single dark-fiber pcycle formed on a Hamiltonian cycle (if it exists). We show ...

The bending of a flagellum, such as the flagellum which forms the tail of a seaurchin spermatozoon, is the result of active mechanochemical processes occurring within the flagellum itself, which cause it to bend actively throughout its length (Gray, 1955; Machin, 1958). To understand how flagella operate, we must understand not only the mechanisms which generate bending, but also the control me...

A modern gas turbine engine, in the layout of designed aircraft, allows us to consider fundamentally different placement options. The contradictory influence type, number and location engines on safety efficiency flight leads need study these tasks at early stages design. This article discusses an approach determining optimal position by wingspan stage preliminary calculation features consist t...