This study will discuss the evaluation of tubing strength in Well X that using Electrical Submersible Pump as an artificial lifting method. The be carried out to determine risk failure production due erosional damage and loads on during operation Pump. Burst, collapse, tension main focus evaluating load by considering worst conditions may experienced operation. calculation is done Microsoft Exc...

Habitat fragmentation is the primary cause of the loss of biodiversity and ecosystem services, but its underlying processes and mechanisms remain poorly understood. Studies of islands and insular terrestrial habitats are essential for improving our understanding of habitat fragmentation. We argue that the Three-Gorges Dam, the largest that humans have ever created, presents a unique grand-scale...

This paper is motivated by the following two related problems in complex networks: (i) control of cascading failures and (ii) mitigation of traffic congestion. Both problems are of significant recent interest as they address, respectively, the security of and efficient information transmission on complex networks. Taking into account typical features of load distribution and weights in real-wor...

Reinforced concrete tall building failure, in residual areas, can cause catastrophic disaster if they can’t survive during the destructive earthquakes. Hence, determining damage of these buildings earthquake and detecting probable mechanism formation are necessary for insurance purposes urban areas. This paper aims to determine failure modes moment resisting frames (MRFs) according beam column....

The dangers of cavitation in pulmonary tuberculosis are well recognized and several different mechanical procedures have been devised for the collapse of these cavities. It is, likewise, well established that no one method of collapse is ideal for all cases and the method chosen in any instance will depend upon many factors, among which are the location and extent of the pathology. In general, ...

Community ecosystems at very different levels of biological organization often have similar properties. Coexistence of multiple species, cross-feeding, biodiversity and fluctuating population dynamics are just a few of the properties that arise in a range of ecological settings. Here we develop a bottom-up model of consumer-resource interactions, in the form of an artificial ecosystem 'number s...

We study the propagation of cascading failures in complex supply networks with a focus on nonlocal effects occurring far away from the initial failure. It is shown that a high clustering and a small average path length of a network generally suppress nonlocal overloads. These properties are typical for many real-world networks, often called small-world networks, such that cascades propagate mos...