Hydrogen Damage to No. 2 Boiler at Armstrong Power Station

1964 ◽  
Vol 86 (3) ◽  
pp. 344-346
Author(s):  
R. H. Cook
Keyword(s):  
Influencing Factors ◽  
Power Station ◽  
Boiler Water ◽  
Hydrogen Damage ◽  
Boiler Operation ◽  
History Of ◽  
Inspection Techniques ◽  
Central Station

This paper documents the history of hydrogen damage to a large central station steam-generating unit. The nature and extent of the damage are discussed, and the inspection techniques used to detect damaged areas are described. Boiler operation, chemistry of boiler water, feedwater treatment, and other influencing factors are also discussed.

Hydrogen Damage in a 1250-Psi Boiler

1964 ◽  
Vol 86 (3) ◽  
pp. 341-343 ◽  
Author(s):  
E. E. Galloway
Keyword(s):  
Case History ◽  
Chemical Treatment ◽  
Low Pressure ◽  
Hydrogen Damage ◽  
Boiler Operation ◽  
History Of

This paper covers the case history of hydrogen damage in a relatively low-pressure boiler (1250 psi). Two failures are discussed, as well as the pertinent facts concerning boiler operation, chemical treatment, and cleaning.

A Case History of Hydrogen Damage

1964 ◽  
Vol 86 (3) ◽  
pp. 350-352
Author(s):  
D. E. Simon
Keyword(s):  
Case History ◽  
Hydrogen Damage ◽  
History Of ◽  
Central Station

This history outlines the occurrence of hydrogen damage in a central station boiler and the steps taken to prevent its recurrence. The case covers a period of six years of operation and is fully documented with analytical and metallographic data.

scholarly journals History of buildingand operation of the Nizhny Tulom hydroelectric power plant on the Kola Peninsula.

2020 ◽  
Vol 11 (7-2020) ◽  
pp. 19-32
Author(s):  
Olga E. Konovalova ◽  
◽  
Nikolai M. Kuznetsov ◽  
Keyword(s):  
Hydroelectric Power Plant ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Station ◽  
Construction Time ◽  
Current State ◽  
Production And Consumption ◽  
Great Patriotic War ◽  
History Of ◽  
The Cost

The article tells the story of the creation of the Nizhne-Tulomskaya hydroelectric power station (HPP). The main energy parameters of the hydroelectric power station, the layoutof the main structures of the station, and archival photos of the construction time are given. Data on the production and consumption of electricity for own needs, the cost of 1 kW·h during the great Patriotic war are shown. It is told about the reconstruction and current state of the station.

scholarly journals Analysis of school furniture used in computer classrooms

2011 ◽  
Vol 59 (1) ◽  
pp. 219-226
Author(s):  
Jiří Tauber
Keyword(s):  
Influencing Factors ◽  
Computer Technology ◽  
The State ◽  
Compact Set ◽  
Computer Technologies ◽  
Actual Type ◽  
Computer Classrooms ◽  
Fast Development ◽  
History Of ◽  
School Furniture

With the respect to the fast development of new computer technologies, it is unconditionally necessary that school furniture reflected this trend and adapted to it. Our use of computer technologies and utilities in teaching is increasing. Therefore, it is necessary to improve school desks so that they would be fit for new computer technology. Creation of a compact set of information relative to the issue concerned, which would comprise of needs and requirements for individual pieces of furniture, represented an important step undertaken. The goal was to assess current conditions of school furniture used in computer classrooms. The analysis aims to stipulate requirements related to the actual type of furniture, in which many influencing factors are taken into consideration. History of school furniture is interesting as well. A survey on the state of school furniture intended for computer classrooms is the main output. The analysis presents foundations for development of closely specialized furniture.

scholarly journals Influencing Factors of Multiple Adverse Outcomes Among Schizophrenia Patients Using Count Regression Models: A Cross-Sectional Study

2021 ◽  
Author(s):  
Lichang Chen ◽  
Wenyan Tan ◽  
Xiao Lin ◽  
Haicheng Lin ◽  
Junyan Xi ◽  
...  
Keyword(s):  
Risk Factor ◽  
Influencing Factors ◽  
Violent Crime ◽  
Regression Models ◽  
Negative Binomial ◽  
Suicide Attempts ◽  
Adverse Outcomes ◽  
Different Types ◽  
History Of ◽  
Self Harm

Abstract Background: Schizophrenia patients have increased risks of several adverse outcomes, including violent crime, aggressiveness and suicide. However, studies of different adverse outcomes in the same population are rare and the influencing factors for these outcomes need clarification by appropriate models. This study aimed to identify influencing factors of these adverse outcomes by examining and comparing different count regression models.Methods: This study included schizophrenia patients who had at least once follow-up record in the Guangdong Mental Health Center Network Medical System during 2020. Three types of adverse outcomes including a) aggressiveness with police dispatch or violence crime, b) aggressiveness without police dispatch, and c) self-harm or suicide attempts. First, we investigated the incidence of these adverse outcomes in each type. Second, the Poisson, negative binomial (NB), zero-inflated Poisson (ZIP), and zero-inflated negative binomial (ZINB) regression models were fitted and compared for their intensity. Finally, We analysed associations between these adverse outcomes intensity and sociodemographic, clinical factors with the best model. Results: A total of 130474 schizophrenia patients were selected. Each type of adverse outcomes was reported by less than 1% of schizophrenia patients in 2020. NB regression model is the best model for fitting the number of aggressiveness without police dispatch because of the best goodness of fit and relatively simple interpretation, whereas ZINB models for the other two outcomes. Age, sex, and history of adverse outcomes were influencing factors shared across these adverse outcomes. Higher educational level, employment were protective factors shared between aggressiveness with police dispatch or violent crime , and aggressiveness without police dispatch. Aggressiveness without police dispatch , and self-harm or suicide attempts shared older onset age (≥18 years) as a risk factor. Family history of mental disease was a risk factor of self-harm or suicide attempts individually.Conclusions: NB and ZINB models were selected for fitting the number of adverse outcomes in our studies. Influencing factors for adverse outcomes intensity included both those shared across different types and those individual to specific types. Therefore, combined and customized tools in risk assessment and intervention for different types of these outcomes might be necessary.

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