Cost-Effective Sulfur Control Strategies for the Great Plains Gasification Project

1989 ◽  
Vol 111 (3) ◽  
pp. 160-166 ◽  
Author(s):  
R. D. Doctor ◽  
K. E. Wilzbach
Keyword(s):  
Great Plains ◽  
Control Strategies ◽  
Cost Effective ◽  
Sulfur Recovery ◽  
Sulfur Dioxide Emissions ◽  
Start Up ◽  
Recovery System ◽  
The Status ◽  
Gasification Plant ◽  
Technical Basis

The Great Plains gasification plant in Beulah, North Dakota, uses 14 Lurgi gasifiers to produce 152×106 scf/d (4.1×106 Nm3/d) of pipeline-quality gas from lignite. Since start-up in mid-1984, the plant has provided a serious challenge to the reliable operation of the Stretford sulfur recovery system. To address this challenge, over forty options for mitigating sulfur emissions wre evaluated on an economic and technical basis, beginning at the emissions source (the stack) and working back through the plant. Although this study was directed toward providing a timely solution to the sulfur dioxide emissions problem, the status and opportunities for a number of emerging technologies were brought into focus. Specifically, technical challenges of liquid reduction-oxidation chemistries (such as Sulfolin and Stretford), Claus technologies, and the internal handling of coal-derived liquids need to be met for future synfuels facilities.

К вопросу анализа природы развития стартап-компаний в экономическом пространстве РФ: проблемные аспекты и пути их решения, влияние экон. преобразований на совр. этапе; сравнит. ан-з с заруб. странами

2018 ◽  
Author(s):  
Михаил Геннадьевич Чепрасов ◽  
Карина Аскаровна Агадилова ◽  
Игорь Олегович Мячин
Keyword(s):  
Comparative Analysis ◽  
Government Support ◽  
Business Incubators ◽  
Business Angels ◽  
Venture Investment ◽  
Start Up ◽  
The Status

В данной статье рассматриваются особенности становления российских стартап-компаний, ключевые проблемы развития и пути их решения. Проведен сравнительный анализ отечественных и зарубежных стартапов, где инновационные компании стали опорой экономики. Проанализирована статистика по состоянию стартапов России в настоящее время. Авторами отмечены главные предпосылки, которые ведут стартапы к провалу. Особое внимание уделено современным возможностям их финансирования. В статье описаны такие технологии финансирования как венчурное инвестирование, спонсирование бизнес-ангелами, государственная поддержка инновационных компаний, многоаспектная помощь бизнес-инкубаторов. Учтены преимущества и пробелы каждой из приведенных форм. This article discusses the features of the formation of Russian start-up companies, key development problems and ways to solve them. A comparative analysis of domestic and foreign startups, where innovative companies have become the backbone of the economy. Analyzed statistics on the status of startups in Russia at the present time. The authors noted the main prerequisites that lead startups to failure. Particular attention is paid to the modern possibilities of their financing. The authors described such financing technologies as venture investment, sponsorship by business angels, government support for innovative companies, multidimensional assistance from business incubators. Take into account the advantages and gaps of each of these forms.

scholarly journals Controlling the Spatial Spread of a Xylella Epidemic

2021 ◽  
Vol 83 (4) ◽  
Author(s):  
Sebastian Aniţa ◽  
Vincenzo Capasso ◽  
Simone Scacchi
Keyword(s):  
Spatial Structure ◽  
Numerical Simulations ◽  
Control Strategies ◽  
Xylella Fastidiosa ◽  
Cost Effective ◽  
Olive Tree ◽  
Control Measures ◽  
Weed Biomass ◽  
Spatial Spread ◽  
Olive Trees

AbstractIn a recent paper by one of the authors and collaborators, motivated by the Olive Quick Decline Syndrome (OQDS) outbreak, which has been ongoing in Southern Italy since 2013, a simple epidemiological model describing this epidemic was presented. Beside the bacterium Xylella fastidiosa, the main players considered in the model are its insect vectors, Philaenus spumarius, and the host plants (olive trees and weeds) of the insects and of the bacterium. The model was based on a system of ordinary differential equations, the analysis of which provided interesting results about possible equilibria of the epidemic system and guidelines for its numerical simulations. Although the model presented there was mathematically rather simplified, its analysis has highlighted threshold parameters that could be the target of control strategies within an integrated pest management framework, not requiring the removal of the productive resource represented by the olive trees. Indeed, numerical simulations support the outcomes of the mathematical analysis, according to which the removal of a suitable amount of weed biomass (reservoir of Xylella fastidiosa) from olive orchards and surrounding areas resulted in the most efficient strategy to control the spread of the OQDS. In addition, as expected, the adoption of more resistant olive tree cultivars has been shown to be a good strategy, though less cost-effective, in controlling the pathogen. In this paper for a more realistic description and a clearer interpretation of the proposed control measures, a spatial structure of the epidemic system has been included, but, in order to keep mathematical technicalities to a minimum, only two players have been described in a dynamical way, trees and insects, while the weed biomass is taken to be a given quantity. The control measures have been introduced only on a subregion of the whole habitat, in order to contain costs of intervention. We show that such a practice can lead to the eradication of an epidemic outbreak. Numerical simulations confirm both the results of the previous paper and the theoretical results of the model with a spatial structure, though subject to regional control only.

scholarly journals Operationalization of Remote Sensing Solutions for Sustainable Forest Management

2021 ◽  
Vol 13 (4) ◽  
pp. 572
Author(s):  
Gintautas Mozgeris ◽  
Ivan Balenović
Keyword(s):  
Remote Sensing ◽  
Forest Management ◽  
Natural Resources ◽  
Sustainable Management ◽  
Sustainable Forest Management ◽  
Cost Effective ◽  
Development Trends ◽  
Comprehensive Information ◽  
The Status

The pre-requisite for sustainable management of natural resources is the availability of timely, cost-effective, and comprehensive information on the status and development trends of the management object [...]

Antimicrobial Resistance Control Strategies: A Coordinated Research Initiative Experience in the Asia Pacific Region

2017 ◽  
Vol 29 (4) ◽  
pp. 250-258
Author(s):  
Lisette Lapierre ◽  
Gabriela Asenjo ◽  
Constanza Vergara ◽  
Javiera Cornejo
Keyword(s):  
Antimicrobial Resistance ◽  
Control Strategies ◽  
International Standards ◽  
Asia Pacific ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Antimicrobial Surveillance ◽  
Research Initiative ◽  
The Status ◽  
Survey Results

The objective was to gather information on the status of antimicrobial surveillance in the Asia Pacific region and suggest control strategies. Twenty-one economies of the Asia Pacific region participated in this initiative. A survey was conducted on antimicrobial use and surveillance throughout the region. A workshop was carried out to create awareness about the issue and discuss the implementation of control strategies. Based on the survey results and workshop conclusions, it can be established that there is better understanding of the implications of antimicrobial resistance in the human medicine area. Only few economies take actions to control antimicrobial resistance on a veterinary/agricultural level. To confront antimicrobial resistance, it is critical to raise awareness; cooperation between all countries is needed to apply international standards, to be able to have harmonized public policies. Countries must align and improve their systems for surveillance and monitoring of antimicrobial resistance in human, animals, and the environment.

Internet plus policy

2017 ◽  
Vol 8 (3) ◽  
pp. 375-386 ◽  
Author(s):  
Kalin Hristov
Keyword(s):  
Dynamic Capabilities ◽  
Cost Effective ◽  
Chinese Economy ◽  
Policy Recommendations ◽  
Content Type ◽  
Knowledge Based ◽  
Course Of Action ◽  
Knowledge Based Economy ◽  
Start Up ◽  
Cooperative Relationship

Purpose The purpose of this paper is to analyze and determine the best course of action for policymakers in China when dealing with the implementation of best practices for the internet of things (IoT). The recently introduced Internet Plus strategy is an attempt by Chinese policymakers to boost the Chinese economy by diminishing its reliance on manufacturing and export in favor of a knowledge-based economy driven by services and the tech sector. The IoT is arguably one of the key drivers behind this transformation. Design/methodology/approach This paper conducts an analysis of existing literature on the IoT and uses two complimentary theories, resource-based view and dynamic capabilities theory, to determine a set of policy recommendations. Findings A cooperative relationship between policymakers, start-up firms and academia is essential to the success of the IoT. The artificial intelligence industry also plays a key role in the development of the IoT and requires strategic funding and favorable policy. Finally, established and cost-effective standards and practices are much more likely to be effective than new and costly alternatives. Originality/value This paper examines the newly established field of the IoT and sets out a number of policy recommendations needed for its success. To achieve this, the author uses two complimentary theories unique to the business management field but increasingly compatible with the Chinese public policy sector.

Numerical Simulation of Start-Up Jets in a Mixing Chamber

2010 ◽  
Author(s):  
Chenzhou Lian ◽  
Dmytro M. Voytovych ◽  
Guoping Xia ◽  
Charles L. Merkle
Keyword(s):  
Transient Flow ◽  
Three Dimensional ◽  
Cost Effective ◽  
Grid Refinement ◽  
Mixing Process ◽  
Quantitative Estimates ◽  
Start Up ◽  
Mixing Chamber ◽  
Parametric Analyses ◽  
Transient Mixing

Numerical simulations of a transient flow of helium injected into an established background flow of nitrogen were carried out to identify the dominant features of the transient mixing process between these two dissimilar gases. The geometry of interest is composed of two helium slots on either side of a central nitrogen channel feeding into a ‘two-dimensional’ mixing chamber. Simulations were accomplished on both two- and three-dimensional grids using an unsteady DES approach. Results are compared with experimental measurements of species distributions. Unsteady 2-D solutions give a reasonable qualitative picture of the transient mixing process in the middle of the chamber and enable cost-effective parametric analyses and grid refinement studies. The 2-D solutions also provide quantitative estimates of representative characteristic times to guide the 3-D calculations. The 3-D solutions give a reasonable approximation to span-wise events.

scholarly journals Cloud based Agile Methodology Test Automation for Web Application by Using Tanh Activated Clustering and Classification Model (TACC) in Machine Learning

Webology ◽  
2021 ◽  
Vol 18 (Special Issue 05) ◽  
pp. 1137-1157
Author(s):  
V. Vamsi Krishna ◽  
G. Gopinath
Keyword(s):  
Web Application ◽  
Web Applications ◽  
Cost Effective ◽  
Daily Basis ◽  
Automatic Testing ◽  
Classification Model ◽  
Test Case ◽  
Test Automation ◽  
The Status ◽  
Clustering And Classification

Automatic functional tests are a long-standing issue in software development projects, and they are still carried out manually. The Selenium testing framework has gained popularity as an active community and standard environment for automated assessment of web applications. As a result, the trend setting of web services is evolving on a daily basis, and there is a need to improve automatic testing. The study involves to make the system to understand the experiences of previous test cases and apply new cases to predict the status of test case using Tanh activated Clustering and Classification model (TACC). The primary goal is to improve the model's clustering and classification output. The outcomes show that the TACC model has increased performance and demonstrated that automated testing results can be predicted, which is cost effective and reduces manual effort to a greater extent.

scholarly journals Identification and management of prediabetes: results of the Latin America Strategic Prediabetes Meeting

2017 ◽  
Vol 41 ◽  
pp. 1 ◽  
Author(s):  
Patricio López-Jaramillo ◽  
Ramfis E. Nieto-Martínez ◽  
Gestne Aure-Fariñez ◽  
Carlos O. Mendivil ◽  
Rodolfo A. Lahsen ◽  
...  
Keyword(s):  
Latin America ◽  
Health Care Systems ◽  
Public Health Problem ◽  
Preventive Treatment ◽  
Cost Effective ◽  
Lifestyle Changes ◽  
Diagnosis And Treatment ◽  
Effective Interventions ◽  
The Status ◽  
Care Systems

To understand the status of prediabetes diagnosis and treatment in Latin America and to evaluate the use of metformin for diabetes prevention in this context. A panel of 15 diabetes experts from seven countries in Latin America met on 14 – 15 August 2014 in Lima, Peru, to review the available literature, discuss the role of prediabetes in type 2 diabetes mellitus and cardiovascular disease, analyze collected information, and make conclusions for prediabetes diagnosis and treatment in Latin America. Prediabetes diagnosis, screening, and treatment, including lifestyle changes, pharmacological treatment, and cost-effectiveness were discussed. Five resulting statements were issued for Latin America: prediabetes is a clinical and public health problem; health care systems do not currently diagnose/treat prediabetes; use of prediabetes risk detection tools are needed region-wide; treatment includes lifestyle changes, multidisciplinary education, and metformin; and registries of patient records and further studies should be supported. The expert panel concluded that in Latin America, preventive treatment through lifestyle changes and metformin are cost-effective interventions. It is important to improve prediabetes identification and management at the primary care level.

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