THE USE OF PLASTICS TO OBVIATE CORROSION

1965 ◽  
Vol 12 (1) ◽  
pp. 24-28
Author(s):  
R.L.H. Damerham
Keyword(s):  
Physical Properties ◽  
Corrosion Protection ◽  
Technical Information ◽  
Case Histories ◽  
New Approach ◽  
Present Practice ◽  
Different Types

This paper will deal with the following topics: 1. A new approach to corrosion technology whereby the use of non‐corrodible materials is studied as against the present practice of largely considering the protection of traditional materials which are subject to corrosion. 2. Types of corrosion for which the use of plastics materials are suitable. 3. The division of plastics into categories differentiated by their resistance to different types of corrosion. 4. The physical properties of importance in considering the use of plastics. 5. The education of (a) The user in the special characteristics of plastics which differ from traditional materials, and (b) Of the supplier to study the needs of the user and to make available to him all the technical information he will require. 6. Case histories in which the use of plastics has been successful where normal anti‐corrosion protection of traditional materials would not have been suitable. 7. Details of services which are available to users and which have been used on installations quoted above, in particular, installation services and prefabricated services. 8. Standards, British, American and International, which are now printed and others which are being worked out to give guidance both to user and manufacturer.

AK STEEL 409 ULTRA FORM

Alloy Digest ◽  
2007 ◽  
Vol 56 (4) ◽  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Carbon Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Corrosion Protection ◽  
Automotive Exhaust ◽  
Standard Type ◽  
Temperature Performance ◽  
Complex Shapes

Abstract AK Steel 409 Ultra Form was created for applications needing oxidation or corrosion protection beyond the capability of carbon steel and some coated steels. AK Steel 409 Ultra Form is more formable than standard Type 409 stainless steel and is particularly suitable for parts requiring more complex shapes and improved weldability. Examples of applications include automotive exhaust tubing and stampings. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties as well as deformation. It also includes information on high temperature performance as well as forming and joining. Filing Code: SS-990. Producer or source: AK Steel, Butler Operations.

scholarly journals “Artificial Wood” Lignocellulosic Membranes: Influence of Kraft Lignin on the Properties and Gas Transport in Tunicate-Based Nanocellulose Composites

Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 204
Author(s):  
Ievgen Pylypchuk ◽  
Roman Selyanchyn ◽  
Tetyana Budnyak ◽  
Yadong Zhao ◽  
Mikael Lindström ◽  
...  
Keyword(s):  
Knudsen Diffusion ◽  
Cellulose Nanofibers ◽  
Kraft Lignin ◽  
Separation Processes ◽  
New Approach ◽  
Future Studies ◽  
Different Types ◽  
Molecular Sizes ◽  
Fast Transport ◽  
Cellulose Membranes

Nanocellulose membranes based on tunicate-derived cellulose nanofibers, starch, and ~5% wood-derived lignin were investigated using three different types of lignin. The addition of lignin into cellulose membranes increased the specific surface area (from 5 to ~50 m2/g), however the fine porous geometry of the nanocellulose with characteristic pores below 10 nm in diameter remained similar for all membranes. The permeation of H2, CO2, N2, and O2 through the membranes was investigated and a characteristic Knudsen diffusion through the membranes was observed at a rate proportional to the inverse of their molecular sizes. Permeability values, however, varied significantly between samples containing different lignins, ranging from several to thousands of barrers (10−10 cm3 (STP) cm cm−2 s−1 cmHg−1cm), and were related to the observed morphology and lignin distribution inside the membranes. Additionally, the addition of ~5% lignin resulted in a significant increase in tensile strength from 3 GPa to ~6–7 GPa, but did not change thermal properties (glass transition or thermal stability). Overall, the combination of plant-derived lignin as a filler or binder in cellulose–starch composites with a sea-animal derived nanocellulose presents an interesting new approach for the fabrication of membranes from abundant bio-derived materials. Future studies should focus on the optimization of these types of membranes for the selective and fast transport of gases needed for a variety of industrial separation processes.

scholarly journals Urban, industrial and technological risks. Synthesis of the elements of vulnerability of the city of Hassi-Messaoud

2020 ◽  
Vol 12 ◽  
Author(s):  
Lahcene Bouzouaid ◽  
Moussadek Benabbas
Keyword(s):  
Urban Space ◽  
Job Search ◽  
Population Distribution ◽  
Risk Assessments ◽  
Demographic Development ◽  
New Approach ◽  
Different Types ◽  
Specific Factors ◽  
The City

Abstract Today, Algeria is one of the developing countries that are engaging seriously into a new approach consisting of all kinds of combined risk assessments for better prevention them. Note that, this is a fairly important parameter, that is, the safety of people and property. However, the magnitude of the risk, of whatever nature, affects a variety of diversified aspects (Human, economic, technical and environmental). This study presented a case study, which is sometimes paradoxical, seeing that it is the result of the combination of all risk factors and specific factors related to them connected to a fragile urban environment: Hassi-Messaoud. It is well known that Hassi-Messaoud is one of the most important city for Algeria's economy; in which the demographic development is mainly known by incessant flows of immigrants, motivated essentially by job search. This arbitrary of population distribution exposes this city to a certain danger; especially as Hassi-Messaoud is in a zone subject to a probable risk expressed here by being characteristic of an oil zone. Thus, this article aimed to provide elements of risk assessment related to oil activity. This approach could conclude that, through a schematic scale, the different types and levels of exposure and vulnerability could be identified, that is, characteristics of the urban space in question.

scholarly journals Putting resilient sustainability into strategy decisions – case studies

2018 ◽  
Vol 56 (7) ◽  
pp. 1598-1612 ◽  
Author(s):  
Julie Winnard ◽  
Jacquetta Lee ◽  
David Skipp
Keyword(s):  
Case Studies ◽  
Real World ◽  
Design Methodology ◽  
Strategic Decision ◽  
New Approach ◽  
Content Type ◽  
Industrial Companies ◽  
Different Types ◽  
Strategic Decision Support ◽  
Practical Implications

Purpose The purpose of this paper is to report the results of testing a new approach to strategic sustainability and resilience – Sustainable Resilient Strategic Decision-Support (SuReSDS™). Design/methodology/approach The approach was developed and tested using action-research case studies at industrial companies. It successfully allowed the participants to capture different types of value affected by their choices, optimise each strategy’s resilience against different future scenarios and compare the results to find a “best” option. Findings SuReSDS™ enabled a novel integration of environmental and social sustainability into strategy by considering significant risks or opportunities for an enhanced group of stakeholders. It assisted users to identify and manage risks from different kinds of sustainability-related uncertainty by applying resilience techniques. Users incorporated insights into real-world strategies. Research limitations/implications Since the case studies and test organisations are limited in number, generalisation from the results is difficult and requires further research. Practical implications The approach enables companies to utilise in-house and external experts more effectively to develop sustainable and resilient strategies. Originality/value The research described develops theories linking sustainability and resilience for organisations, particularly for strategy, to provide a new consistent, rigorous and flexible approach for applying these theories. The approach has been tested successfully and benefited real-world strategy decisions.

scholarly journals Building SMARTER Communities of Resistance and Solidarity

2018 ◽  
Vol 10 (2) ◽  
pp. 99-118
Author(s):  
Andre Oboler ◽  
Karen Connelly
Keyword(s):  
Online Communities ◽  
Community Resilience ◽  
New Work ◽  
New Approach ◽  
Different Types ◽  
Future Work

The Cyber-Racism and Community Resilience (CRaCR) project included an examination into features of online communities of resistance and solidarity. This work formed a key part of the project’s focus on resilience and produced a deeper understanding of a range of types of actors working in this space and how they might individually contribute effectively to creating resilience. The need for new synergies between different types of stakeholders and approaches was highlighted as an area of future work. This paper explores a design for that future work that builds and supports online communities of resistance and solidarity by drawing on the lessons from the earlier research and extending them. This new work both presents a model for cooperation and explains how different stakeholders can positively engage under the model in a smarter way. That is, through a system which facilitates Solidarity in Moving Against Racism Together while Enabling Resilience. This new approach draws on the strengths of individuals actors, but also seeks to turn points of weakness for one actor into opportunities for cooperation that strengthen the system as a whole.

Sensor and Actuator Intrusion Detection for Cyber-Physical Systems via Adaptive Estimation Algorithm

2020 ◽  
Author(s):  
Jiayi Su ◽  
Yuqin Weng ◽  
Susan C. Schneider ◽  
Edwin E. Yaz
Keyword(s):  
Kalman Filters ◽  
Adaptive Estimation ◽  
Estimation Algorithm ◽  
Cyber Physical Systems ◽  
Motor Speed ◽  
New Approach ◽  
Physical Systems ◽  
Unknown Type ◽  
Different Types ◽  
Conditional State

Abstract In this work, a new approach to detect sensor and actuator intrusion for Cyber-Physical Systems using a bank of Kalman filters is presented. The case where the unknown type of the intrusion signal is considered first, using two Kalman filters in a bank to provide the conditional state estimates, then the unknown type of intrusion signal can be detected properly via the adaptive estimation algorithm. The case where the target (either sensor or actuator) of the intrusion signal is unknown is also considered, using four Kalman filters in a bank designed to detect if the intrusion signal is about to affect healthy sensor or actuator signal. To test these methods, a DC motor speed control system subject to attack by different types of sensor and actuator signals is simulated. Simulations show that different types of sensor and actuator intrusion signals can be detected properly without the knowledge of the nature and the type of these signals.

Case descriptions for use when training users of the IDEAL schedule

2019 ◽  
pp. 63-76
Author(s):  
Maya Semrau ◽  
Alistair Burns ◽  
Antonio Lobo ◽  
Marcel Olde Rikkert ◽  
Philippe Robert ◽  
...  
Keyword(s):  
Integrated Assessment ◽  
Case Histories ◽  
Local Case ◽  
Different Types ◽  
Severity Levels ◽  
The Ideal

This chapter provides four case histories that can be used in the training of future users of the International Schedule for the Integrated Assessment and Staging of Care for Dementia (IDEAL schedule) and its accompanying ‘Menu of care options’. The case histories describe patients with different types and severity levels of dementia and have been written in a manner that makes them understandable in different settings or countries, as well as having been shown to be useful in the training of users of the schedule in different countries. Ratings for the case histories are provided according to the seven dimensions of the IDEAL schedule, with the consequent links to the ‘Menu of care options’. The chapter also includes suggestions about the development of local case histories typical for the setting in which the schedule will be used when training users in that setting.

Consultant Lobbyists and Public Officials: Selling Policy Expertise or Personal Connections in Canada?

2019 ◽  
Vol 17 (4) ◽  
pp. 340-359 ◽  
Author(s):  
Maxime Boucher ◽  
Christopher A Cooper
Keyword(s):  
Technical Information ◽  
Political Information ◽  
Personal Relationships ◽  
Public Officials ◽  
Public Office ◽  
Policy Sector ◽  
Actual Behaviour ◽  
Different Types ◽  
Personal Connections ◽  
Nuanced Understanding

Recent research suggests that there are two different types of lobbyists: those specializing in providing access to their personal connections with public office holders, and those specializing in a particular policy sector. This article advances this research by examining the actual behaviour of consultant lobbyists with data gathered from the Canadian Lobbyist Registry. Specifically, we probe two questions. First, using four indicators found within the literature, we investigate whether the behaviour of consultant lobbyists reflects the well-connected generalist or the issue specialist lobbyist. Second, we examine moving public office holders to see whether administrative officials – who make greater use of technical information – or politicians and partisan advisors – who are more interested in partisan/political information – are more likely to continue to be contacted by consultant lobbyists who contacted them in their previous position. Our results suggest that a more nuanced understanding of lobbying is required. While the majority of activities by consultant lobbyists are consistent with providing expertise to policymakers, a sizable minority of lobbyist activity is consistent with selling access to public office holders. Yet even here, our second analysis suggests that personal relationships may also involve the provision of expertise.

scholarly journals Metallic Glasses: A New Approach to the Understanding of the Defect Structure and Physical Properties

Metals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 605 ◽  
Author(s):  
Vitaly Khonik ◽  
Nikolai Kobelev
Keyword(s):  
Shear Modulus ◽  
Physical Properties ◽  
Experimental Verification ◽  
Metallic Glasses ◽  
Structural Relaxation ◽  
Defect Structure ◽  
Relaxation Phenomena ◽  
Volume Changes ◽  
New Approach ◽  
Heat Effects

The work is devoted to a brief overview of the Interstitialcy Theory (IT) as applied to different relaxation phenomena occurring in metallic glasses upon structural relaxation and crystallization. The basic hypotheses of the IT and their experimental verification are shortly considered. The main focus is given on the interpretation of recent experiments on the heat effects, volume changes and their link with the shear modulus relaxation. The issues related to the development of the IT and its relationship with other models on defects in metallic glasses are discussed.

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