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"Damage prevention"
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Influence Mechanism of Liquid Level on Oil Tank Structures and Damage Risk Prevention Based on Shell Theory
As a key storage facility, the structural safety of large oil tanks is directly related to the stable operation of the energy system. The static pressure caused by the change of liquid level is one of the main loads in the service process of storage tanks, which determines the structural deformation and damage risk. To explore the structural deformation properties under the change of liquid levels and provide a theoretical basis for the prevention and control of damage risk, this paper systematically analyzes the mechanical response of storage tanks under the pressures induced by different liquid levels based on the shell theory. Combined with the finite element software COMSOL, the radial displacement and stress-strain distribution under different liquid levels are simulated to verify the accuracy and effectiveness of the proposed theoretical model. The increase in liquid level and radius aggravates the radial deformation and makes the risk point move up, while the increase in wall thickness can effectively reduce the deformation response. Suggestions on the monitoring zone and damage risk prevention measures have also been given to instruct the safe operation of oil tanks. The research provides theoretical support for the optimization design of storage tank structures, the construction of advanced structural health monitoring system and the prevention and control of damage risk.
Journal Article
Using risk analysis for flood protection assessment
This book explores the benefits of using risk analysis techniques in the evaluation of flood protection structures, and examines the results of the environmental impact assessment for selected planned flood protection projects. The objective of the book is to propose a methodology for environmental impact assessment in water management. In more detail, flood mitigation measures are investigated with the aim of selecting the best option for the approval process. This methodology is intended to streamline the process of environmental impact assessment for structures in the field of the water management. The book?s environmental impact assessment system for water management structures analyzes the respective risks for different options. The results are intended to support the selection of future projects that pose minimum risks to the environment. Comparison of alternatives and designation of the optimal variant are implemented on the basis of selected criteria that objectively describe the characteristics of the planned alternatives and their respective impacts on the environment. The proposed Guideline for environmental impact assessment of flood protection objects employs multi-parametric risk analysis, a method intended to not only enhance the transparency and sensitivity of the evaluation process, but also successfully addresses the requirements of environmental impact assessment systems in the European Union. These modifications are intended to improve the outcomes of the environmental impact assessment, but may also be applied to other infrastructure projects. The case study proves that the primary aim? to improve transparency and minimize subjectivity in the environmental impact assessment process specific to flood protection structure projects? is met for the planned project in Kruézlov, Slovakia.
Book
Understanding rancher coexistence with jaguars and pumas: a typology for conservation practice
Ranchers living near large carnivores can adopt diverse practices to prevent livestock damage. Effective management interventions to help reduce damage must address the varied needs of ranchers by segmenting audiences for more targeted programs. We developed a typology that conceptualized six types of ranchers based on the theory of planned behavior. We posited that rancher types were driven by: attitudes; social norms; perceived control; emotional disposition; risk perception; and contextual factors. To test the typology throughout Costa Rica, we conducted a structured survey of a random sample of 93 ranchers affected by jaguar and puma predation and paired them with a sample of 69 unaffected neighbors. Cluster analyses of survey results provided empirical support for a typology of four types of ranchers, two of which were predicted by the theory of planned behavior: preventive ranchers who take control to prevent felid damage; and helpless ranchers who lack control. We also identified a risk-neutral type who takes no action as they do not perceive the cats as a threat; and a cat-troubled type influenced mainly by negative emotions toward big cats. This last type supports the need to include emotional factors in theoretical frameworks when dealing with human-wildlife conflict. The typology is useful for designing improved policy and management interventions to reduce wildlife conflicts.
Journal Article
Seek higher ground : the natural solution to our urgent flooding crisis
\"With Seek Higher Ground, environmental writer and former land-use planner Tim Palmer explores the legacy of flooding in America with a fresh look that addresses the emerging climatic, economic, and ecological realities of our rivers and communities. Global warming is forecast to sharply intensify flooding, and Seek Higher Ground urges that we reduce future damage in the most effective, efficient, and equitable ways possible. Through historical narrative, rigorous reporting, and decades of vivid personal experience, Palmer details how our society's approach to flood control has been infamously inadequate and chronically counterproductive. He builds a compelling case for both the protection of floodplain open space and for programs that help people voluntarily relocate the most threatened homes away from high-water hazards. Only by recognizing the indomitable forces of nature, and adapting to them, can we thrive in the challenging climate to come\"-- Provided by publisher.
BOOK
Cell cycle control in cancer
Cancer is a group of diseases in which cells divide continuously and excessively. Cell division is tightly regulated by multiple evolutionarily conserved cell cycle control mechanisms, to ensure the production of two genetically identical cells. Cell cycle checkpoints operate as DNA surveillance mechanisms that prevent the accumulation and propagation of genetic errors during cell division. Checkpoints can delay cell cycle progression or, in response to irreparable DNA damage, induce cell cycle exit or cell death. Cancer-associated mutations that perturb cell cycle control allow continuous cell division chiefly by compromising the ability of cells to exit the cell cycle. Continuous rounds of division, however, create increased reliance on other cell cycle control mechanisms to prevent catastrophic levels of damage and maintain cell viability. New detailed insights into cell cycle control mechanisms and their role in cancer reveal how these dependencies can be best exploited in cancer treatment.This Review discusses our current understanding of cell cycle regulation, the functions of cell cycle checkpoints and how disruption of these finely tuned mechanisms is associated with cancer. Insights into these regulatory mechanisms are creating new opportunities for the treatment of cancer.
Journal Article
Urban flooding of greater Dhaka in a changing climate
Dhaka, the capital of Bangladesh and one of the world's rapidly growing megacities, is an urban hotspot for climate risks. Located in central Bangladesh on the lower reaches of the Ganges-Brahmaputra Delta, the city faces the recurring phenomena of urban flooding and waterlogging following intense rainfall nearly every year. As a low-elevation city with a tropical monsoon climate, Dhaka has a long history of river flooding as a natural hazard. Recent major floods have been worse in terms of depth and extent of inundation and duration, especially in fringe areas, where many of the city's poor reside. Rapid, unplanned urbanization and the gradual filling up of low-lying flood plains, rivers, canals, and other water bodies traditionally used to drain or retain water during rainfall have exacerbated the problem. A growing concern is that, in a changing climate, characterized by heavier and more erratic rainfall in the Ganges-Brahmaputra-Meghna (GBM) Basin during the monsoon season, the situation may worsen. The analysis in this book will help Bangladesh's policy makers take targeted steps to mitigate urban flooding in Dhaka and improve the city's resilience in the face of climate change and variability. Equipped with a host of investment options designed to address current flooding and further climate-proof urban infrastructure, local decision makers will be able to develop realistic, yet effective, strategies that prioritize interventions and sequence activities.
eBook
Mechanism and medical implications of mammalian autophagy
Autophagy is a highly conserved catabolic process induced under various conditions of cellular stress, which prevents cell damage and promotes survival in the event of energy or nutrient shortage and responds to various cytotoxic insults. Thus, autophagy has primarily cytoprotective functions and needs to be tightly regulated to respond correctly to the different stimuli that cells experience, thereby conferring adaptation to the ever-changing environment. It is now apparent that autophagy is deregulated in the context of various human pathologies, including cancer and neurodegeneration, and its modulation has considerable potential as a therapeutic approach.
Journal Article