Pavement Technology Elements in Green Highway

2015 ◽  
Vol 73 (4) ◽  
Author(s):  
W. N. Aifa ◽  
M.R. Hainin ◽  
M.Z. Abd.Majid ◽  
R. MohamadZin ◽  
H. Yaacob ◽  
...  
Keyword(s):  
High Performance ◽  
Advanced Technology ◽  
Control Element ◽  
Highway Design ◽  
Priority Level ◽  
Highway Engineering ◽  
Critical Elements ◽  
Weighted Analysis ◽  
Green Practices ◽  
Weighted Factor

A technology that has been experienced during the construction of a pavement has indicated the improvement in exploring the advanced technology pavement. Types of technologies of pavements applied are always related to the high performance of the pavements during the life span. Indeed, the application of technology in pavement has insisted to reduce the rate of environmental problems such as global warming, abundance of solid waste and so on. The development of technologies in pavement has been identified by the expert in highway engineering as one of the initiatives in response the sustainability requirement that later on will be applied to implement green highway concepts. Nowadays, the process of selecting a variety of green pavement technology element is becoming more challenging to be evaluated qualitatively. This paper aims to determine critical pavement technology element based on ranking of priority to achieve the objective of the green highway design. It is necessary to determine the critical elements in order to identify which elements will most contribute to the green practices based on the priority level of the weighted factor value. Therefore, a questionnaire survey was developed and distributed to the respondent in order to obtain the agreement level for the element. Based on the weighted analysis, it has been shown that the soil erosion control element has achieved first ranking in order to implement green highway and followed by permeable and cool pavement.In conclusion, the identification of critical elementsof green pavement technology is the main key towards sustainable development in the future.

Advanced Technology Programs for Small Turboshaft Engines: Past, Present, Future

1991 ◽  
Vol 113 (1) ◽  
pp. 33-39 ◽  
Author(s):  
E. T. Johnson ◽  
H. Lindsay
Keyword(s):  
United States Army ◽  
High Performance ◽  
The United States ◽  
Modern Technology ◽  
Advanced Technology ◽  
Gas Generator ◽  
Turbine Engine ◽  
Technology Programs ◽  
Aircraft Propulsion System ◽  
Year 2000

This paper addresses approximately 15 years of advanced technology programs sponsored by the United States Army Aviation Applied Technology Directorate and its predecessor organizations and conducted by GE Aircraft Engines (GEAE). Included in these programs is the accomplishment of (1) the 1500 shp demonstrator (GE12), which led to the 1700, and (2) the 5000 shp Modern Technology Demonstrator Engine (MTDE/GE27). Also included are several advanced technology component programs that have been completed or are ongoing through the early 1990s. The goals for the next generation of tri-service small advanced gas generator demonstration programs are shown. A prediction is thus made of the advancements required to fulfill the aircraft propulsion system established by the DoD/NASA Integrated High-Performance Turbine Engine Technology (IHPTET) initiative through the year 2000.

scholarly journals Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2478
Author(s):  
Hyeon Seok Oh ◽  
Chung Hyeon Lee ◽  
Na Kyoung Kim ◽  
Taechang An ◽  
Geon Hwee Kim
Keyword(s):  
High Performance ◽  
Active Component ◽  
Tactile Sensor ◽  
Wearable Devices ◽  
Advanced Technology ◽  
Electronic Skin ◽  
Points Of View ◽  
External Stimuli ◽  
Flexible Component

Skin is the largest sensory organ and receives information from external stimuli. Human body signals have been monitored using wearable devices, which are gradually being replaced by electronic skin (E-skin). We assessed the basic technologies from two points of view: sensing mechanism and material. Firstly, E-skins were fabricated using a tactile sensor. Secondly, E-skin sensors were composed of an active component performing actual functions and a flexible component that served as a substrate. Based on the above fabrication processes, the technologies that need more development were introduced. All of these techniques, which achieve high performance in different ways, are covered briefly in this paper. We expect that patients’ quality of life can be improved by the application of E-skin devices, which represent an applied advanced technology for real-time bio- and health signal monitoring. The advanced E-skins are convenient and suitable to be applied in the fields of medicine, military and environmental monitoring.

SUSTAINABLE DESIGN AND CONSTRUCTION ELEMENTS IN GREEN HIGHWAY

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Raja Rafidah Raja Muhd Rooshdi ◽  
Muhd Zaimi Abd Majid ◽  
Shaza Rina Sahamir
Keyword(s):  
Sustainable Development ◽  
Sustainable Design ◽  
Analysis Method ◽  
Priority Level ◽  
Critical Elements ◽  
Natural Minerals ◽  
Increasing Demand ◽  
Construction Operation ◽  
Design Construction ◽  
Design And Construction

Sustainable development principles have been implemented in various sectors including construction. Proper development and operation of infrastructure projects such highways can contribute significantly to the mission of sustainable development. Previous studies shown that most of conventional highways are unsustainable in many ways. Highways are facing severe challenge such as deteriorating condition, congestion, energy supply, and shortfall of funding for maintenance and capacity expansion to meet increasing demand. However at the same time, they consume huge amount of natural minerals and energy and generate waste and emission which contributing to climate changes and global warming. Therefore, sustainable design, construction, operation and maintenance have become priority these day. The aim of this paper is to determine critical elements for sustainable design and construction based on ranking of the priority level of the weighted value of each criteria. The questionnaires survey were developed and distributed to related respondents in order to obtain the agreement level for the element. The data was analysed using SPSS with factor analysis method.  Result from the analysis shown the criteria, weightage and score for main criteria for sustainable design and construction activities for green highway.

scholarly journals Advanced Aeroderivative Gas Turbines in Coal-Based High Performance Power Systems (HIPPS)

1998 ◽  
Author(s):  
F. L. Robson ◽  
D. J. Seery
Keyword(s):  
Power Systems ◽  
Gas Turbine ◽  
Gas Turbines ◽  
High Performance ◽  
Power Plants ◽  
Performance Standards ◽  
Combined Cycle ◽  
Advanced Technology ◽  
Early 21St Century ◽  
Near Term

The Department of Energy’s Federal Energy Technology Center (FETC) is sponsoring the Combustion 2000 Program aimed at introducing clean and more efficient advanced technology coal-based power systems in the early 21st century. As part of this program, the United Technologies Research Center has assembled a seven member team to identify and develop the technology for a High Performance Power Systems (HIPPS) that will provide in the near term, 47% efficiency (HHV), and meet emission goals only one-tenth of current New Source Performance Standards for coal-fired power plants. In addition, the team is identifying advanced technologies that could result in HIPPS with efficiencies approaching 55% (HHV). The HIPPS is a combined cycle that uses a coal-fired High Temperature Advanced Furnace (HITAF) to preheat compressor discharge air in both convective and radiant heaters. The heated air is then sent to the gas turbine where additional fuel, either natural gas or distillate, is burned to raise the temperature to the levels of modern gas turbines. Steam is raised in the HITAF and in a Heat Recovery Steam Generator for the steam bottoming cycle. With state-of-the-art frame type gas turbines, the efficiency goal of 47% is met in a system with more than two-thirds of the heat input furnished by coal. By using advanced aeroderivative engine technology, HIPPS in combined-cycle and Humid Air Turbine (HAT) cycle configurations could result in efficiencies of over 50% and could approach 55%. The following paper contains descriptions of the HIPPS concept including the HITAF and heat exchangers, and of the various gas turbine configurations. Projections of HIPPS performance, emissions including significant reduction in greenhouse gases are given. Application of HIPPS to repowering is discussed.

SYNTHESIS OF IODINE-CONTAINING NANO-DISPERSED COMPOSITES

2016 ◽  
Vol 1 (4) ◽  
pp. 79-82
Author(s):  
Григорьев ◽  
Vasiliy Grigorev ◽  
Козлов ◽  
Valeriy Kozlov ◽  
Мамцев ◽  
...  
Keyword(s):  
High Performance ◽  
Glycyrrhizic Acid ◽  
Organic Matrix ◽  
Advanced Technology ◽  
Human Organism ◽  
Organic Mineral ◽  
Inorganic Iodine ◽  
Physical And Chemical ◽  
Iodobenzoic Acid

The purpose of research is to develop techniques for chemical implementation of the obtained low molecular weight products with covalently bound iodine in the biodegradable matrix (glycyrrhizic acid) with obtaining nanosized composites, capable of metered cleavage of iodine in vivo. One of the vital trace elements is iodine. Adding iodine to food components is an advanced technology and it promotes replenishment of iodine deficiency in human organism. The most interesting compounds wherethe inorganic iodine are chemically bound to the organic matrix. The processes of formation of the complex "o-iodobenzoic acid-β-glycyrrhizic acid" and encapsulation mechanisms of 5-iodo-6-metiluratsila in nanoscale biodegradable matrix -β-glycyrrhizic acid by using physical and chemical methods of analysis – IR, UV and NMR spectroscopy. The evaluationof nano-sized ofsynthesized iodinebioorganic complexes by laser nanostructured analysis is carried out. The processes of deiodination o-iodobenzoic acid in vivo by high-performance liquid chromatography is examed. The conducted research showsthe bioavailability of synthesized nanostructured iodine organic-mineral complex.

scholarly journals Ceramide and Sphingosine Regulation of Myelinogenesis: Targeting Serine Palmitoyltransferase Using microRNA in Multiple Sclerosis

2019 ◽  
Vol 20 (20) ◽  
pp. 5031
Author(s):  
Somsankar Dasgupta ◽  
Swapan K. Ray
Keyword(s):  
Multiple Sclerosis ◽  
High Performance ◽  
Current Knowledge ◽  
Critical Role ◽  
Primary Source ◽  
Advanced Technology ◽  
Gas Chromatography Mass Spectrometry ◽  
Serine Palmitoyltransferase ◽  
Autoimmune Encephalomyelitis ◽  
Ceramide Generation

Ceramide and sphingosine display a unique profile during brain development, indicating their critical role in myelinogenesis. Employing advanced technology such as gas chromatography–mass spectrometry, high performance liquid chromatography, and immunocytochemistry, along with cell culture and molecular biology, we have found an accumulation of sphingosine in brain tissues of patients with multiple sclerosis (MS) and in the spinal cord of rats induced with experimental autoimmune encephalomyelitis. The elevated sphingosine leads to oligodendrocyte death and fosters demyelination. Ceramide elevation by serine palmitoyltransferse (SPT) activation was the primary source of the sphingosine elevation as myriocin, an inhibitor of SPT, prevented sphingosine elevation and protected oligodendrocytes. Supporting this view, fingolimod, a drug used for MS therapy, reduced ceramide generation, thus offering partial protection to oligodendrocytes. Sphingolipid synthesis and degradation in normal development is regulated by a series of microRNAs (miRNAs), and hence, accumulation of sphingosine in MS may be prevented by employing miRNA technology. This review will discuss the current knowledge of ceramide and sphingosine metabolism (synthesis and breakdown), and how their biosynthesis can be regulated by miRNA, which can be used as a therapeutic approach for MS.

Numerical Study of the Characteristics of Rotary Spool Orifice in Water Hydraulics

2014 ◽  
Vol 716-717 ◽  
pp. 662-669
Author(s):  
Jin Jun Wu ◽  
You Sheng Yang ◽  
Jing Yuan Li ◽  
Ge Gang Yu ◽  
Zong Xia Jiao
Keyword(s):  
Steady State ◽  
High Performance ◽  
Numerical Study ◽  
Tap Water ◽  
Control Valve ◽  
Control Element ◽  
Steady State Flow ◽  
Pressure Drops ◽  
State Flow ◽  
Depth Study

The rotary control orifice, in which the relative angular openings are adjusted by the rotary motion of the spool, thus controlling the flow area and the flow passing through, is a basic control element of hydraulic control valve. It has several advantages, such as little minimal steady flow rate, good anti-contamination, small driving power, small opening and shutting shock, and etc., over the translational control orifice. The working medium is tap water. A model is developed and numerical studies are carried out to investigate the hydrodynamic characteristics of the rotary control orifice, including flow and pressure field, flow characteristics, flow torque. The relationships between the flow and the pressure drops, the efflux angle and the angular openings, the steady-state flow torque and the pressure drops as well as the angular openings are obtained. The results show that a) the orifice geometries have great effects on the efflux angle and the steady-state flow torque; b) Under the same openings and flow direction, the efflux angle is almost constant under different pressure drops. It is larger for meter-in flow than for meter-out flow and decreases with the increase of openings; c) The steady-state flow torque (including meter-in flowTsfinand meter-out flowTsfout) is proportional to the pressure drops and first increases and then decreases with the increase of openings, finally reaches zero at the fully opened position; d) The friction moment is proportional to the rotary speed so as the transient flow induced moment to the rotary acceleration. The in-depth study of the drag moment of rotary control orifice helps to design high performance rotary servo valve for robots. The in-depth study of the rotary control orifice provides a basis for developing high performance rotary control valve.

Study on Intelligent Monitoring for Cooling System of Power Transformer

2013 ◽  
Vol 655-657 ◽  
pp. 1440-1444
Author(s):  
Guo Jin Chen ◽  
Ming Xu ◽  
Ting Ting Liu ◽  
Jing Ni ◽  
Dong Xie ◽  
...  
Keyword(s):  
High Performance ◽  
Environmental Control ◽  
Cooling System ◽  
Power Transformer ◽  
Integrated Design ◽  
Advanced Technology ◽  
Intelligent Monitoring ◽  
Electrical Grid ◽  
Three Phase ◽  
State Relay

On the basis of studying the transformer condition assessment, the paper put forward the monitoring framework of the transformer cooler based on the intelligent electrical grid, and developed the intelligent monitoring system of the transformer cooler based on the DCS and dual PLC. The system used the DCS and dual PLC redundancy, the intelligent controller of the motor, the system’s platform for the centralized monitoring, the environmental control system and the other advanced technology, and implemented the monitoring, remote control and status monitoring of the transformer cooling system to improve the reliability and adaptability of the transformer cooler system. The system can be applied for the intelligent electrical grid. The above technologies are innovative in the high-performance distributed bus, the integrated design of three-phase solid state relay and magnetic latching relay and the cooling technology of the semiconductor in the PLC module, and lie in the leading domestic level.

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