scholarly journals FROM HEAVY DUTY LUBRICANTS TO BIOBASED FLUIDS – LEGACY OF JOSEPH PEREZ

2018 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
S. J. Asadauskas
Keyword(s):  
Large Scale ◽  
Heavy Duty ◽  
Research Directions ◽  
New Developments ◽  
Engine Oils ◽  
Personal Impact ◽  
Oil Market ◽  
Hydraulic Fluids ◽  
Innovative Thinking ◽  
Gear Oils

Advancement in lubricant technology is driven by technical demands, oil market, innovations from related chemical areas and other conventional factors. Nevertheless, a personal impact of an individual scientist can also be very important. Few individuals can claim to have accelerated lubricant progress more than Dr. Joseph M. Perez, who initiated many new developments in lubricant technology and drove them to large scale implementation. Early in his career at PennState he worked on aerospace lubricants, developing highly efficient additives for supersonic planes. When working at Caterpillar he dealt with hydraulic fluids, gear oils and many heavy duty lubricants. During employment at NIST and upon return to PennState Dr. Perez realized the importance of vegetable oils. He pioneered many research directions for their applications, becoming directly involved in vegetable-based engine oils, hydraulic fluids, greases, biodiesel, elevator fluids and many other areas. His innovative thinking, enthusiasm and initiatives will be sorely missed by lubricant researchers.

scholarly journals Lubricity, Tribological and Rheological Properties of Green Ester Oil Prepared from Bio-Based Azelaic Acid

2021 ◽  
Vol 33 (6) ◽  
pp. 1363-1369
Author(s):  
Waled Abdo Ahmed ◽  
Nadia Salih ◽  
Jumat Salimon
Keyword(s):  
Rheological Properties ◽  
Azelaic Acid ◽  
Pour Point ◽  
Viscosity Index ◽  
Raw Material ◽  
Low Friction ◽  
Plant Oil ◽  
Engine Oils ◽  
Hydraulic Fluids ◽  
Gear Oils

Plant oil derived compounds have been used as the raw material for the synthesis of green biolubricant. Azelaic acid derived from oleic acid is one of the interesting compounds. The synthesis of azelate esters oil based synthetic green biolubricants was carried out. The esterification process of azelaic acid with variety type of alcohols was catalyzed by concentrated H2SO4. The yields percentages of azelate esters oil produced were varied depending their overall molecular structure. The azelate esters oil properties were evaluated for their suitability as a biolubricant. The results showed that the linear azelate esters oil showed high pour point values in a range of 15 to 5 ºC for di-decyl azelate, di-octyl azelate and di-hexyl azelate respectively. On the other hands, the branch azelate esters oil showed very low pour point of -70, -58 and -50 ºC for di-2-butyloctyl azelate, di-2-ethylhexanol azelate and di-2-ethylbutyl azelate, respectively. Moreover, the linear azelate esters oil gave high values of flash point, viscosity index and oxidative stability, and they were slightly affected by branching molecule structure. The tribological and rheological properties of high molecular azelate esters oil were also performed. Subsequently, most of them were classified as non-Newtonian fluids and having boundary lubrication properties with low friction coefficient. The branch azelate esters oil is plausible to be used as green biolubricants in many applications including automotive, marine engine oils, compressor oils, hydraulic fluids, gear oils and industrial biolubricants.

Design of a Magnetic Wall-Climbing Car

2014 ◽  
Vol 526 ◽  
pp. 211-216
Author(s):  
Qiong Ying Lv ◽  
Yu Shi Mei ◽  
Xi Jia Tao
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Power ◽  
Large Scale ◽  
Magnetic Force ◽  
Mechanical Analysis ◽  
Heavy Duty ◽  
Magnetic Wall ◽  
Force Curves

As the trend of large-scale wind Power, People pay more attention to wind energy, which as a clean, renewable energy. Traditional unarmed climbing and crane lifting has been unable to meet the requirements of the equipment maintenance. Magnetic climb car can automatically crawl along the wall of the steel tower, the maintenance equipment and personnel can be sent to any height of the tower. The quality of the magnetic wall-climbing car is 550kg, which can carry 1.3 tons load. In this paper completed the magnetic wall-climbing car design and modeling, mechanical analysis in static and dynamic, obtained with the air gap and Magnetic Force curves. The application shows that the magnetic wall-climbing car meets the reliable adsorption, heavy-duty operation, simple operation etc..

Fuel consumption and friction benefits of low viscosity engine oils for heavy duty applications

2017 ◽  
Vol 110 ◽  
pp. 23-34 ◽  
Author(s):  
Bernardo Tormos ◽  
Leonardo Ramírez ◽  
Jens Johansson ◽  
Marcus Björling ◽  
Roland Larsson
Keyword(s):  
Fuel Consumption ◽  
Heavy Duty ◽  
Engine Oils ◽  
Low Viscosity

scholarly journals Road Freight Transport Electrification Potential by Using Battery Electric Trucks in Finland and Switzerland

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 823
Author(s):  
Mehdi Jahangir Samet ◽  
Heikki Liimatainen ◽  
Oscar Patrick René van Vliet ◽  
Markus Pöllänen
Keyword(s):  
Large Scale ◽  
Ghg Emissions ◽  
Limited Range ◽  
Freight Transport ◽  
Heavy Duty ◽  
Range Extender ◽  
Percentage Points ◽  
Road Freight ◽  
Road Systems ◽  
Gross Vehicle Weight

Medium and heavy-duty battery electric trucks (BETs) may play a key role in mitigating greenhouse gas (GHG) emissions from road freight transport. However, technological challenges such as limited range and cargo carrying capacity as well as the required charging time need to be efficiently addressed before the large-scale adoption of BETs. In this study, we apply a geospatial data analysis approach by using a battery electric vehicle potential (BEVPO) model with the datasets of road freight transport surveys for analyzing the potential of large-scale BET adoption in Finland and Switzerland for trucks with gross vehicle weight (GVW) of over 3.5 t. Our results show that trucks with payload capacities up to 30 t have the most potential for electrification by relying on the currently available battery and plug-in charging technology, with 93% (55% tkm) and 89% (84% tkm) trip coverage in Finland and Switzerland, respectively. Electric road systems (ERSs) would be essential for covering 51% trips (41% tkm) of heavy-duty trucks heavier than 30 t in Finland. Furthermore, range-extender technology could improve the trip electrification potential by 3–10 percentage points (4–12 percentage points of tkm).

scholarly journals Creativity And Innovation Thinking

2021 ◽  
Vol 03 (04) ◽  
pp. 93-98
Author(s):  
Gulnoza Sabirovna Sultanova ◽  
Keyword(s):  
Comparative Analysis ◽  
Young People ◽  
Creative Thinking ◽  
Large Scale ◽  
Analytical Analysis ◽  
Creative Processes ◽  
Distinctive Features ◽  
Innovative Thinking ◽  
Creativity And Innovation

In this article, a comparative analysis of creative and innovative thinking in a similar and different way will be made. The peculiarities of creativity and the essence of innovation are considered to be brought up as an object of philosophical research. Within the framework of the theme, it is mentioned about how our young people can use the opportunities created in our country on a large scale, about the achievement of the goals, the pursuit of innovation, creative thinking consisting of creative processes in a specific way and the various methods used in the mobilization of its implementation and their practical opportunities. Also, analytical analysis of the characteristic aspects of innovative thinking was carried out.The essence and essence of creative and innovational thinking, its distinctive features are considered to be brought up as an object of philosophical research. The views on innovation and creative thinking were also analyzed comparatively. In particular, it is noted that the formation of creative and innovative thinking is a period demand as well as a social need.

An Applicative Survey on Few-Shot Learning

2021 ◽  
Vol 15 ◽  
Author(s):  
Jianwei Zhang ◽  
Xubin Zhang ◽  
Lei Lv ◽  
Yining Di ◽  
Wei Chen
Keyword(s):  
Large Scale ◽  
Representation Learning ◽  
Language Models ◽  
Data Sets ◽  
Research Directions ◽  
Large Scale Data ◽  
Cross Domain ◽  
Meta Learning ◽  
Definition Of ◽  
Future Work

Background: Learning discriminative representation from large-scale data sets has made a breakthrough in decades. However, it is still a thorny problem to generate representative embedding from limited examples, for example, a class containing only one image. Recently, deep learning-based Few-Shot Learning (FSL) has been proposed. It tackles this problem by leveraging prior knowledge in various ways. Objective: In this work, we review recent advances of FSL from the perspective of high-dimensional representation learning. The results of the analysis can provide insights and directions for future work. Methods: We first present the definition of general FSL. Then we propose a general framework for the FSL problem and give the taxonomy under the framework. We survey two FSL directions: learning policy and meta-learning. Results: We review the advanced applications of FSL, including image classification, object detection, image segmentation and other tasks etc., as well as the corresponding benchmarks to provide an overview of recent progress. Conclusion: FSL needs to be further studied in medical images, language models, and reinforcement learning in future work. In addition, cross-domain FSL, successive FSL, and associated FSL are more challenging and valuable research directions.

Heavy Duty Gear Oils

2009 ◽  
pp. 1-1-3
Author(s):  
E. M. Kipp ◽  
I. S. Kolarik ◽  
C. A. Zeiler
Keyword(s):  
Heavy Duty ◽  
Gear Oils

New Developments in Complete Nitrogen Removal with Biological Aerated Filters

1990 ◽  
Vol 22 (1-2) ◽  
pp. 273-280 ◽  
Author(s):  
Frank Rogalla ◽  
Marie-Marguerite Bourbigot
Keyword(s):  
Large Scale ◽  
Ammonia Oxidation ◽  
Bacterial Degradation ◽  
Operational Parameters ◽  
Design Data ◽  
New Developments ◽  
Hydraulic Conditions ◽  
Solids Retention ◽  
Extensive Pilot ◽  
Pilot Tests

Biological aerated filters combine bacterial degradation of pollution by fixed biomass with physical filtration in a single reactor.Several full-size plants with the BIOCARBONE process have established the compactness, ease of operation and high removal rates achievable with this advanced treatment system. Based on large-scale industrial experiences, a new biofilter design offering simplified operation and increased performance is presented. Design data for carbon and nutrient removal were collected during extensive pilot tests. Hydraulic conditions and pollution loadings were varied in order to optimize the biological and operational parameters of the filter. Carbon and ammonia oxidation as well as denitrification and suspended solids retention could be achieved with an overall hydraulic retention time of two hours.

scholarly journals Perspectives on the Capabilities for the Selection of Strategic Projects

2020 ◽  
Vol 12 (19) ◽  
pp. 8191
Author(s):  
Khalifa Mohammed Al-Sobai ◽  
Shaligram Pokharel ◽  
Galal M. Abdella
Keyword(s):  
Large Scale ◽  
Quantitative Methods ◽  
Project Selection ◽  
Economic Benefits ◽  
Research Directions ◽  
Qualitative And Quantitative Methods ◽  
Strategic Project ◽  
Managerial Capabilities ◽  
Selection Of

Strategic projects are large scale, complex, and require significant investments and resources. These projects aim at gaining long-term social and economic benefits. Therefore, organizations focusing on strategic projects should use a consistent approach that suits their strategy, capability, and long-term expectations. Based on the four research questions and content analysis of the literature, generic processes used for the strategic project selection in tandem with the managerial capabilities are identified in this paper. The generic processes and managerial capabilities are used to develop a generic framework for strategic project selection. The framework is used for literature analysis in the paper. The review shows that both qualitative and quantitative methods are used for strategic project selection. Some possible research directions have also been proposed at the end of the review. The paper provides value to both researchers and practitioners in terms of tools available and a guidance on project selection through a structured process framework.

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