scholarly journals Recent Developments in Coatings, Gratings, and Reflective Components

1984 ◽  
Vol 79 ◽  
pp. 607-616
Author(s):  
R. R. Shannon
Keyword(s):  
State Of The Art ◽  
New Technology ◽  
The State ◽  
Current Technology ◽  
Large Size ◽  
Incoming Radiation ◽  
Recent Developments ◽  
Electronic Sensors ◽  
Large Primary ◽  
Telescope System

The requirements on gratings and coatings for astronomical use differ from the general industrial requirements primarily in the scale of the components to be fabricated. Telescopes have large primary mirrors which require large coating plants to handle the components. Dispersive elements are driven by the requirement to be efficient in the presence of large working apertures, and usually optimize to large size in order to efficiently use the incoming radiation. Beyond this, there is a “new” technology of direct electronic sensors that places specific limits upon the image scale that can be used at the output of a telescope system, whether direct imagery or spectrally divided imagery is to be examined. This paper will examine the state of the art in these areas and suggest some actions and decisions that will be required in order to apply current technology to the predicted range of large new telescopes.

scholarly journals Role of Piezoelectric Elements in Finding the Mechanical Properties of Solid Industrial Materials

2018 ◽  
Vol 8 (10) ◽  
pp. 1737 ◽  
Author(s):  
Arshed Mohammed ◽  
Sallehuddin Haris ◽  
Mohd Nuawi
Keyword(s):  
Mechanical Properties ◽  
State Of The Art ◽  
New Technology ◽  
Material Testing ◽  
Current Status ◽  
Piezoelectric Elements ◽  
Need To Evaluate ◽  
Recent Developments ◽  
The Many

Recent developments in ultrasonic material testing have increased the need to evaluate the current status of the different applications of piezoelectric elements (PEs). This research have reviewed state-of-the-art emerging new technology and the role of PEs in tests for a number of mechanical properties, such as creep, fracture toughness, hardness, and impact toughness, among others. In this field, importance is given to the following variables, namely, (a) values of the natural frequency to PEs, (b) type and dimensions of specimens, and (c) purpose of the tests. All these variables are listed in three tables to illustrate the nature of their differences in these kinds of tests. Furthermore, recent achievements in this field are emphasized in addition to the many important studies that highlight the role of PEs.

scholarly journals Bibliographic review on the state of the art of strontium and zinc based regenerative therapies. Recent developments and clinical applications

2019 ◽  
Vol 7 (12) ◽  
pp. 1974-1985 ◽  
Author(s):  
Mirta Jiménez ◽  
Cristina Abradelo ◽  
Julio San Román ◽  
Luis Rojo
Keyword(s):  
Musculoskeletal Disorders ◽  
State Of The Art ◽  
Clinical Applications ◽  
The State ◽  
Tissue Formation ◽  
Promoting Effect ◽  
Recent Developments ◽  
Regenerative Therapies

This review brings up to date the state of the art of strontium and zinc based regenerative therapies, both having a promoting effect on tissue formation and a role inhibiting resorption in musculoskeletal disorders.

Nanostructured Coatings for Tooling Applications

2015 ◽  
Vol 825-826 ◽  
pp. 597-604 ◽  
Author(s):  
Arno Köpf ◽  
Jozef Keckes ◽  
Juraj Todt ◽  
Reinhard Pitonak ◽  
Ronald Weissenbacher
Keyword(s):  
Process Parameters ◽  
State Of The Art ◽  
Nanostructured Coatings ◽  
The State ◽  
Recent Developments

In this contribution the authors will present a short summit of the state of the art in the field of nanostructured coatings and will then emphasise on the most recent developments concerning the possible changes in the coating architecture of CVD AlTiN, which can be achieved by changing some of the process parameters

Service Oriented Cloud Computing- The State of the Art

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Sabeen Masood ◽  
Fatima Khalique ◽  
Bushra Bashir Chaudhry ◽  
Abdul Rauf
Keyword(s):  
Cloud Computing ◽  
Success Factors ◽  
Service Oriented Architecture ◽  
State Of The Art ◽  
New Technology ◽  
Cost Effective ◽  
The State ◽  
Critical Success ◽  
Service Oriented ◽  
Effective Service

Cloud computing has emerged as a powerful new technology. The processing and computation power embedded in the cloud technology is not only flexible but also infinitely scalable and cost effective. Service oriented architecture (SOA) is a perfect stage for cloud computing. SOA has allowed customers and organizations to achieve cloud computing and reap its benefits that would not have been possible through any other architecture. This paper discusses the concept and importance of service oriented cloud computing by highlighting possible architectures, their benefits and critical success factors.

Review of recent trends in gas sensing technologies and their miniaturization potential

Sensor Review ◽  
2014 ◽  
Vol 34 (1) ◽  
pp. 24-35 ◽  
Author(s):  
Sari Lakkis ◽  
Rafic Younes ◽  
Yasser Alayli ◽  
Mohamad Sawan
Keyword(s):  
Design Methodology ◽  
Gas Sensing ◽  
State Of The Art ◽  
The State ◽  
Content Type ◽  
Novel Technologies ◽  
Advantages And Disadvantages ◽  
Different Types ◽  
Recent Developments ◽  
Recent Trends

Purpose – This paper aims to give an overview about the state of the art and novel technologies used in gas sensing. It also discusses the miniaturization potential of some of these technologies in a comparative way. Design/methodology/approach – In this article, the authors state the most of the methods used in gas sensing discuss their advantages and disadvantages and at last the authors discuss the ability of their miniaturization comparing between them in terms of their sensing parameters like sensitivity, selectivity and cost. Findings – In this article, the authors will try to cover most of the important methods used in gas sensing and their recent developments. The authors will also discuss their miniaturization potential trying to find the best candidate among the different types for the aim of miniaturization. Originality/value – In this article, the authors will review most of the methods used in gas sensing and discuss their miniaturization potential delimiting the research to a certain type of technology or application.

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