Berthing force is a critical dynamic lateral force in the design of berthing structures, having equal relevance when compared to seismic forces. Besides, the construction cost of berthing structures is very high which can be optimized by calculating precise design berthing energy on fender and selecting optimum fender system. In the present study, design berthing energy of bulk carriers having ...

A young adult male pedestrian was struck by a car and sustained a closed complete rupture of both heads of the biceps brachii muscle belly, among other injuries. Rupture of the biceps brachii muscle belly is a rare injury, and complete muscle belly rupture of both long and short heads from direct blunt force trauma has not been reported outside of military parachutists. We describe the findings...

Nucleosomes organize chromatin in eukaryotic cells at the lowest scale by wrapping the DNA double helix around a histone octamer. The mechanism by which this structure can be opened, giving access to DNA-processing enzymes, is of fundamental biological importance. Here we describe a new coarse-grained model based on the toroidal geometry of the nucleosome which allows the simulation of nucleoso...

one of the most important structural components of engine compartment assembly in a car body is the srail. s-rails has significant role in absorbing energy during crash events and therefore it is designed for efficient behavior in such conditions. driving the peak crushing force of the s-rails is one of the important objectives in the design process of such structures. peak crushing force is ex...

Foldamers constructed from oligomers of β-peptides form stable secondary helix structures already for small chain lengths, which makes them ideal candidates for the investigation of the (un)folding of polypeptides. Here, the results of molecular simulations of the mechanical unfolding of a β-heptapeptide in methanol solvent revealing the detailed unfolding pathway are reported. The unfolding pr...

This work is conducted to obtain mechanical properties of microtubule. For this aim, interaction energy in alpha-beta, beta-alpha, alpha-alpha, and beta-beta dimers was calculated using the molecular dynamic simulation. Force-distance diagrams for these dimers were obtained using the relation between potential energy and force. Afterwards, instead of each tubulin, one sphere with 55 KDa weight ...

Depending on humidity, some technical properties of T. chebula (black halile) dried fruit were investigated. It was observed that various properties, such as dimension, geometric mean diameter, and arithmetic increased linearly with increasing moisture content. With the increase in content, sphericity from 57.2% to 67.7%, surface area 487.65 mm2 805.03 mm2, porosity 0.49 0.59, angle repose 22.7...

Fresh fruit micro-rupture generally occurs during mechanical handling, which severely affects the product’s postharvest quality along supply chain. An extended finite element (XFEM) model was developed for investigating fracture response of tomato under compression. A 1/4 modeled using three parts: exocarp, mesocarp and septa frame, pre-crack. amplitude curve-based uniformly distributed pressur...

background & aim: energy is one of important debates in agriculture ecology and for this reason; the ratio of output and input energy in different agriculture ecosystems has been calculated. if one can reduce, input energy level into farms through the indices like poisons, fertilization, tractor energy and lab our force. in addition to the net income of the farmers, this issue would play a ...