scholarly journals Assessment of the Environmental and Operational Factors Affecting the Bioremediation of H2S Gas as Air Pollutant

2007 ◽  
Vol 37 (3) ◽  
pp. 630-654
Author(s):  
Mohamed Zytoon ◽  
Magda Abd El-Aty ◽  
Faten Nofal ◽  
Ahmed Issa ◽  
Adel Zakaria
Keyword(s):  
Air Pollutant ◽  
Factors Affecting ◽  
Operational Factors

Operational factors affecting microgravity levels in orbit

1980 ◽  
Author(s):  
R. OLSEN ◽  
J. MOCKOVCIAK, JR.
Keyword(s):  
Factors Affecting ◽  
Operational Factors

Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools

Indoor Air ◽  
2020 ◽  
Author(s):  
Wenwei Che ◽  
Alison T. Y. Li ◽  
Henry Christopher Frey ◽  
Kimberly Tasha Jiayi Tang ◽  
Li Sun ◽  
...  
Keyword(s):  
Hong Kong ◽  
Secondary Schools ◽  
Air Pollutant ◽  
Factors Affecting ◽  
Pollutant Concentrations ◽  
Air Pollutant Concentrations

Formaldehyde Formation in Large Bore Engines Part 2: Factors Affecting Measured CH2O

1999 ◽  
Vol 122 (4) ◽  
pp. 611-616 ◽  
Author(s):  
Daniel B. Olsen ◽  
Charles E. Mitchell
Keyword(s):  
Natural Gas ◽  
Air Pollutant ◽  
Operating Conditions ◽  
Factors Affecting ◽  
Natural Gas Engines ◽  
Spark Timing ◽  
Wide Range ◽  
Hazardous Air Pollutant ◽  
Relationship Of ◽  
The Impact

Current research shows that the only hazardous air pollutant of significance emitted from large bore natural gas engines is formaldehyde CH2O. A literature review on formaldehyde formation is presented focusing on the interpretation of published test data and its applicability to large bore natural gas engines. The relationship of formaldehyde emissions to that of other pollutants is described. Formaldehyde is seen to have a strong correlation to total hydrocarbon (THC) level in the exhaust. It is observed that the ratio of formaldehyde to THC concentration is roughly 1.0–2.5 percent for a very wide range of large bore engines and operating conditions. The impact of engine operating parameters, load, rpm, spark timing, and equivalence ratio, on formaldehyde emissions is also evaluated. [S0742-4795(00)01004-8]

scholarly journals MODERN TRENDS OF DESIGN, RESEARCH AND USE OF HYDRAULIC MACHINES IN DRIVES OF MECHANISMS AND TRANSMISSIONS (REVIEW ARTICLE)

2021 ◽  
pp. 77-84
Author(s):  
Volodymyr Serykov
Keyword(s):  
Product Life Cycle ◽  
Information Technologies ◽  
Design Research ◽  
Field Tests ◽  
Factors Affecting ◽  
Software Products ◽  
Advantages And Disadvantages ◽  
Hydraulic Machines ◽  
Operational Factors ◽  
Hydrostatic Transmissions

The work is devoted to an overview of modern trends in the design, research and use of hydraulic machines in the drives of mechanisms and transmissions. The analysis of the use of hydromechanical transmissions has been carried out. The advantages and disadvantages of hydromechanical transmissions in comparison with mechanical ones are described. A brief overview of modern approaches to the design of new products, taking into account the existing information technologies, is carried out. We have analyzed modern software products designed to support the project at different stages of the product life cycle. It has been found that at the present time the appearance of individual variants of highly specialized software with a modern interface for synthesizing the structure of a designed product does not make it possible to solve the problems of synthesis and structural analysis of hydro-mechanical transmissions. A review of the analysis of operational factors affecting the fault tolerance and operating parameters of hydrostatic transmissions in general and hydromechanical transmission in particular is carried out. We have also considered the examples of technical solutions that allow to reduce the number of failures associated with the influence of one factor or another, as well as allow to reduce its influence on the parameters of the mechanism. The analysis of sources with information on the study of the parameters of hydrostatic transmissions using field tests or the mathematical apparatus developed by the authors is carried out. The ways of solving problems arising at the stages of design research are outlined. Keywords: design, hydrostatic transmission, hydromechanical transmission, influence of operational factors, synthesis

A Critical Literature Analysis of the Relationships of Marketing and Strategic Planning Under Project Environments

2021 ◽  
Vol 12 (2) ◽  
pp. 1-24
Author(s):  
Brian J. Galli ◽  
Miriam F. Bongo ◽  
Kafferine D. Yamagishi ◽  
Lanndon A. Ocampo
Keyword(s):  
Project Management ◽  
Strategic Planning ◽  
Management Decision ◽  
Future Research ◽  
Factors Affecting ◽  
Research Fields ◽  
Management Decision Making ◽  
Operational Factors ◽  
Structured Literature Review ◽  
Critical Literature

This paper investigates marketing and strategic planning issues, its relationship to project management, and the factors affecting these relationships. The authors perform an unstructured and structured literature review, which identified 83 articles that explore the critical variables in this paper. Factors are often seen as operational factors that are directed towards personnel tasked with daily operations. Notably, project management, when tasked with marketing and strategic planning, is challenged to cope with evolving situational alterations that require a different set of skills. Particularly, they contribute to several bodies of knowledge, including project management, decision-making, strategic planning, marketing, and leadership. The study builds on these bodies of knowledge and also addresses gaps identified in these research fields. They contribute to research on factors through various avenues for future research.

Operational Factors Affecting Undesirable Event Occurrence in the Railway System

2021 ◽  
Author(s):  
Franciszek J. Restel ◽  
Szymon Haladyn
Keyword(s):  
Factors Affecting ◽  
Undesirable Event ◽  
Railway System ◽  
Operational Factors ◽  
Event Occurrence

Operational factors affecting strategic partnering in UK social housing

2007 ◽  
Vol 14 (4) ◽  
pp. 334-345 ◽  
Author(s):  
Keith Jones ◽  
Yamuna Kaluarachchi
Keyword(s):  
Social Housing ◽  
Factors Affecting ◽  
Strategic Partnering ◽  
Operational Factors

Biological and operational determinants of the effectiveness and efficiency of biodiversity conservation programs

2013 ◽  
Vol 40 (2) ◽  
pp. 142 ◽  
Author(s):  
Helen F. Laycock ◽  
Dominic Moran ◽  
David G. Raffaelli ◽  
Piran C. L. White
Keyword(s):  
Cost Effectiveness ◽  
Cost Utility ◽  
Cost Effectiveness Analysis ◽  
Utility Analysis ◽  
Conservation Programs ◽  
Factors Affecting ◽  
Effectiveness Analysis ◽  
Generation Times ◽  
Operational Factors ◽  
Effectiveness And Efficiency

Context Comprehensive evaluation of biodiversity conservation programs is essential for informing their development as well as the design of future programs. Such evaluations should not be limited to whether targets have been met, but should also assess the cost and efficiency of meeting targets, and any factors contributing to success or failure. Aims We aimed to evaluate the effectiveness and efficiency of individual-species conservation programs, and the biological and operational factors affecting these. We used the species action plans (SAPs) within the UK Biodiversity Action Plan as our case study. Methods We used cost–effectiveness analysis, cost–utility analysis and threat-reduction assessment to evaluate the effectiveness and efficiency of individual SAPs. Then we used statistical models to investigate the relative importance of biological and operational factors affecting cost, effectiveness and efficiency. Key results Conservation plan success was affected by both biological and operational factors. Invertebrate plans tended to be less effective, whereas vertebrate plans were less efficient. Plans for widely distributed species with longer generation times tended to be less efficient. Of the three different evaluation approaches, cost-effectiveness analysis offered the best combination of ease of data collection and accuracy of data content. Conclusions The most successful SAPs concerned species with short generation times and narrow distributions. Operationally, the most successful SAPs were concise and focussed and showed clear lines of responsibility for implementation. Implications Techniques such as cost–effectiveness analysis, cost-utility analysis and threat reduction assessment should be used to inform decisions on maximising the rate of return on conservation investments, although broader ecological implications and socio-cultural benefits should also be considered. The success of conservation plans is influenced by both biological and operational factors. Because biological factors cannot be controlled or altered, where species exhibit characteristics that are likely to make their conservation less effective or efficient, it is critical that operational factors are optimised. High-quality data are necessary to underpin prioritisation decisions, and monitoring to deliver reliable data on both the benefits and costs of conservation should form a core component of conservation programs.

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