The packing structures of transmembrane helices are traditionally attributed to patterns in residues along the contact surface. In this view, besides keeping the helices confined in the membrane, the bilayer has only a minor effect on the helices structure. Here, we use two different approaches to show that the lipid environment has a crucial effect in determining the cross-angle distribution o...

Cell sorting, whereby a heterogeneous cell mixture organizes into distinct tissues, is a fundamental patterning process in development. So far, most studies of cell sorting have relied either on 2-dimensional cellular aggregates, in vitro situations that do not have a direct counterpart in vivo, or were focused on the properties of single cells. Here, we report the first multiscale experimental...

The motivation for performing indoor radon reduction measurements or mitigation are generally communicated by the commercial radon industry on the basis of identifying and eliminating a potential health hazard. The role of the commercial indoor radon industry is complicated by the different perspectives of the problem that have developed for various interested parties. Interested parties includ...

Over the years the development of society and industry, coupled with growing awareness of environmental issues, has led to the application of increasingly sophisticated technological methods for handling waste. Between the 1970’s and the 1990’s disposal technologies took on an air of self-sufficiency often forcing operators to take sides, in much the same way as occurs with sport fans. Those in...

The expansion and growth of cities is a remarkable phenomenon in urban planning literature,so that unpredictable developments have become more evident in recent decades, especially in cities that haveundergone changes in their physical structure following the promotion of their political role. The present paper seeksto identify the factors driving growth in the developed areas of Ardebil city a...

Nature's way of dealing with unhealthy conditions is unfortunately not one that compels us to conduct a solvent hygiene on a cash basis. 1919, George Bernard Shaw The Global Unified Meta-model of the BiOsphere (GUMBO) was used to simulate how the socioeconomic conditions specified in the Special Report on Emission Scenarios (SRES) of the IPCC (Intergovernmental Panel on Climate Change) influenc...

The normal human running has been simulated by two-dimensional biped model with 7 segments. Series of normal running experiments were performed and data of ground reaction forces measured by force plate was analyzed and was fitted to some Fourier series. The model is capable to simulate running for different ages and weights at different running speeds. A proportional derivative control algorit...

The purpose of this paper is to present a new type of dynamic balancing system, having a driving solution of the rotating part based on magnetic interactions. The magnetic system also plays the role of an elastic bearing. In the first part of the article is presented the technical solution which allows the dynamic balancing evaluation depending on the radial displacement between two disks with ...

In this paper, we present an analytical method to investigate the behavior of a two degrees of freedom oscillator excited by dry friction. The system consists of two masses connected by linear springs. These two masses are in contact with a driving belt moving at a constant velocity. The contact forces between the masses and the belt are obtained from Coulomb’s friction laws. A set of periodic ...