Research on the New Multilayer Composite Lightning Electromagnetic Shielding Materials

2012 ◽  
Vol 217-219 ◽  
pp. 717-720
Author(s):  
Xiao Gang Zhao ◽  
Yi Zhou ◽  
Yu Zhang Guo ◽  
Zi Jun Lin ◽  
Jian Cheng Zhu
Keyword(s):  
Information Systems ◽  
Electromagnetic Pulse ◽  
Reflection Principle ◽  
Electromagnetic Shielding ◽  
Lightning Protection ◽  
Multilayer Composite ◽  
New Materials ◽  
Effective Protection ◽  
Protection Mechanism

According to the characteristics of lightning electromagnetic pulse (LEMP) in information systems, the new multilayer composite electromagnetic shielding materials are utilized for the effective protection of the lightning hazards. The lightning protection mechanism and the characteristics of the new electromagnetic shielding materials are investigated. The shielding and reflection principle of the new materials are carried out. The electromagnetic shielding tent which is made of such multilayer composite electromagnetic shielding materials are applied in the integrated lightning protection of information systems, which shows such materials are safe, convenient, practical and worthy of widely application.

Computerized materials-information systems

1987 ◽  
Vol 322 (1567) ◽  
pp. 373-391 ◽  
Keyword(s):  
Information Systems ◽  
Composite Structures ◽  
Ad Hoc ◽  
National Level ◽  
Cost Effective ◽  
Test Methods ◽  
Advanced Materials ◽  
New Materials ◽  
Effective Manner ◽  
Macro Scale

Progress made in the development of computerized materials-information systems and current activities are reviewed both at the national level and internationally. Reasons for the lack of full realization of the opportunities offered by modern computers are elaborated and discussed. An intensified need for international collaboration and coordination is indicated. Advanced materials, ceramics, plastics, intermetallic compounds, fibres, and composites, are appearing at an accelerating rate and there is strong demand for quick and reliable computer access to their properties. However, these new materials pose special problems for the data compiler and analyst: the properties and combinations of properties required are often new; there is a marked lack of standardization of materials, properties and test methods; the new materials are often not homogeneous, monolithic and ‘off-the-shelf’, but are rather ad hoc tailored compositions, microand macro-scale composite structures with strongly process-related properties; and there is increasing insistence by designers on property values of designated reliability. The challenge is to accumulate data - numeric, tabular and graphic - from diverse sources, convert it to machine-readable form with a harmonized array of metadata descriptors and present the resulting database(s) to the user in a convenient and cost-effective manner.

scholarly journals Results of Full Scale Modeling of Electromagnetic Pulse Impact for Lightning Protection of Power Plants

2019 ◽  
Author(s):  
Vladimir Fortov ◽  
Alexei Shurupov ◽  
Valentina Zavalova ◽  
Alexander Kozlov ◽  
Mihail Shurupov ◽  
...  
Keyword(s):  
Electromagnetic Pulse ◽  
Power Plants ◽  
Full Scale ◽  
Lightning Protection ◽  
Scale Modeling

The Ship Strong Electromagnetic Environment and its Improvement

2015 ◽  
Vol 713-715 ◽  
pp. 1226-1229
Author(s):  
Hui Cheng Xia ◽  
Zhe Teng
Keyword(s):  
Information Systems ◽  
Electromagnetic Pulse ◽  
Electromagnetic Compatibility ◽  
Basic Method ◽  
Electromagnetic Environment ◽  
Protection Measures ◽  
Special Stress ◽  
Internal Information ◽  
Circuit Components

Strong electromagnetic pulse protection is very important. We must solve the electromagnetic compatibility problem between the circuit components, the ship equipments and internal information systems, and ensure the electromagnetic compatibility of the protection measures. This paper analyzed the requirements and reinforcement targets. It also put special stress on analyzing the basic method and principle of reinforcing platform.

ATP-Sensitive K+ Channels in the Brain: Sensors of Hypoxic Conditions

Physiology ◽  
2002 ◽  
Vol 17 (3) ◽  
pp. 127-130 ◽  
Author(s):  
Katsuya Yamada ◽  
Nobuya Inagaki
Keyword(s):  
Energy Consumption ◽  
Metabolic Stress ◽  
Effective Protection ◽  
Lethal Effects ◽  
Protection Mechanism ◽  
K Channels ◽  
Hypoxic Conditions ◽  
Metabolic States ◽  
Energy Consuming ◽  
The Brain

Rapid minimization of energy consumption in excitable tissues is effective protection from lethal effects of extreme metabolic stress. The ATP-sensitive K+ channels in the brain respond in ATP-depleted metabolic states such as hypoxia and may be involved in the protection mechanism against energy-consuming generalized seizure.

New materials for electromagnetic shielding: Metal foams with plasma properties

2010 ◽  
Vol 52 (8) ◽  
pp. 1700-1705 ◽  
Author(s):  
Giuseppina Monti ◽  
Luca Catarinucci ◽  
Luciano Tarricone
Keyword(s):  
Metal Foams ◽  
Electromagnetic Shielding ◽  
New Materials ◽  
Plasma Properties

A Brief Review about Surface Treatment of Magnesium Alloys

2012 ◽  
Vol 724 ◽  
pp. 307-310 ◽  
Author(s):  
Yu Bai ◽  
Fang Li Yu ◽  
Jun Du ◽  
Wen Xian Wang ◽  
Ze Qin Cui ◽  
...  
Keyword(s):  
Magnesium Alloys ◽  
Protective Coatings ◽  
Corrosion And Wear ◽  
New Materials ◽  
Paper Briefly ◽  
Effective Protection ◽  
Widespread Application ◽  
Specific Strength ◽  
Aerospace Applications ◽  
High Specific Strength

Due to the low density and high specific strength, magnesium and its alloys have been extensively used in the automobile and aerospace applications, where the weight reduction is critical. However, they are highly prone to corrosion, which has greatly limited their application in the automotive and aerospace industries. This paper briefly reviews the technologies for improving the corrosion and wear resistance of magnesium alloys and finds that the widespread application of magnesium alloys is still limited by the lack of proper protective coatings. Therefore, there is still a need to explore new materials and methods for the effective protection of magnesium and its alloys.

scholarly journals Characteristics of lightning at and in the vicinity of the CN Tower

2021 ◽  
Author(s):  
Vicki Todorovski.
Keyword(s):  
Communication Systems ◽  
Electromagnetic Pulse ◽  
Lightning Protection ◽  
Extensive Investigation ◽  
Surrounding Area ◽  
Lightning Strikes ◽  
The Public ◽  
Extensive Analysis ◽  
Lightning Detection ◽  
Tall Structure

The CN Tower has been the center of tourism in Toronto since it first opened to the public on June 26, 1976. It is the world's tallest manmade freestanding structure as well as Canada's most recognizable icon standing at a height of 553 meters. However, like everything else, there could be a down to this incredible structure. Does it attract more lightning; potentially putting the surrounding area in its vicinity in harm's way, or does it provide lightning protection to this area? Although, extensive analysis have been performed concerning the characteristics of lightning strikes to the CN Tower, not much attention has been given to the characteristics of lightning strikes in the vicinity of the tower or the influence the tower has on the lightning environment around it. This thesis is believed to be the first to fill such a gap and tries to answer these questions. Using the 2005 North American Lightning Detection Network data for the area of up to 100 km from the tower, an extensive investigation of lightning activities in the vicinity of the tower is presented here. A comparison between the characteristics of CN Tower strikes and the characteristics of strikes occurring in its vicinity is also presented. Furthermore, the parameters of the lightning electromagnetic pulse (LEMP) generated by a strike to the tower are compared with those generated by a non-eN Tower strike. A substantial increase in the CN Tower LEMP peak in comparison with that resulting from non-CN Tower LEMP has been found. Therefore, electronic and communication systems located in the vicinity of a very tall structure must be specially protected from the lightning-generated electromagnetic pulse.

Effectiveness of innovation protection mechanisms in Malaysian high-tech sector

2015 ◽  
Vol 38 (9) ◽  
pp. 952-969 ◽  
Author(s):  
M.Muzamil Naqshbandi ◽  
Sharan Kaur
Keyword(s):  
Lead Time ◽  
Future Research ◽  
High Tech ◽  
Effective Protection ◽  
Holistic View ◽  
Content Type ◽  
Protection Mechanism ◽  
High Tech Sector ◽  
Protection Mechanisms ◽  
The Right

Purpose – The purpose of this paper is to empirically investigate the effectiveness of innovation protection mechanisms in four high-tech industries in Malaysia. Design/methodology/approach – A questionnaire survey is administered to 339 managers working in four Malaysian high-tech industries. Findings – The authors find that in most industries, patents are considered as the most effective innovation protection mechanism, while lead time is considered as least effective. In firms with private and foreign ownerships, patents and in firms categorized as “others” “moving quickly down the learning curve” are considered as the most effective protection mechanisms. It also emerges that “being first to market (lead time)” is considered as the least effective protection mechanism under all ownership structures. Further, young and middle-aged firms report patents, while old firms report secrecy as the most effective innovation protection mechanisms. Research limitations/implications – This paper restricted analysis to the high-tech sector in Malaysia, and thus, the findings are not generalizable to other industries. Second, this paper took into consideration only four innovation protection mechanisms. The authors suggest that future research should investigate the issue at hand in other industries and consider other innovation protection mechanisms to have a holistic view of how Malaysian firms view different innovation protection mechanisms. Practical implications – In addition to providing inputs for policy-making, the results of this paper are expected to help practitioners in deciding on the right kind of innovation protection mechanisms for their innovations based on their industry, ownership structure and firm age. Originality/value – This paper is the first of its kind conducted in the Malaysian high-tech sector and as such is expected to help policy-makers to design and implement effectively innovation protection policies.

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