Cardiac arrhythmias and stroke

Petrova, Elizaveta A.; Koltsova, Evgeniya A.

doi:10.26442/2075-1753_19.2.30-34

Cited by 2 publications

(4 citation statements)

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“…These investigations are also described elsewhere. 86 Taking into account that the residence time of chemicals in a drum boiler is about 1 h (the percentage 79 of blowdown determines the exact residence time) and much shorter in once-through boilers, the residence time applied in these experiments, 33,79,81 fully covered all the cases in the real power plants. Furthermore, it may be stated that the anticipated decomposed amount of ODA in feedwater systems and boilers should not be over 30%.…”

Section: Effect Of Residence Timementioning

confidence: 99%

“…15,28 Dioctadecylamine and trioctadecylamine are formed by releasing ammonia from ODA molecules and the reactions between them. 26,35,79,86 Harmful low molecular organic acids were neither reported in the mentioned papers nor in the work later F I G U R E 7 Scheme of the decomposition phases of ODA for the concentrations below and above the saturation concentration (C sat ) 79 (figure is reused with permission from the respective journal).…”

Section: Decomposition Products Of Odamentioning

confidence: 99%

“…As mentioned in Section 5.5, the decomposition of primary amines at high temperatures is known to result in the formation of secondary and tertiary amines, while releasing ammonia. On the basis of the literature data, 28,78,79,86,88 the decomposition of ODA in steam generators in the presence of metal catalysts 26 leads to the formation of dioctadecylamine and ammonia, as follows:…”

Section: Decomposition Reactions Of Odamentioning

confidence: 99%

“…However, the reaction forming dioctadecylamine provides no explanation for the release of gases (hydrogen, carbon monoxide, methane) in the process of thermolysis, which has been demonstrated in the aforementioned studies. 79,81,86 Therefore, Dubrovski et al 79 were the first to propose an explanation of the formation of gases by making the assumption that, ODA is transformed into alkenes during the decomposition process, as illustrated in the Figure 8A. Hydrolysis of alkenes leads to the formation of alcohols which are transformed into aldehydes and acids in the presence of metals or metal oxides as catalysts.…”

Section: Decomposition Reactions Of Odamentioning

confidence: 99%

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Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Vidojkovic,

Mijajlovic,

Lindeboom

et al. 2023

Energy Science & Engineering

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Film forming amines (FFA) are corrosion inhibitors added to power plant water. The major concern associated with their application is the thermal stability in the high temperature power plant water medium, along with the risk of decomposition into low molecular weight organic acids that can cause corrosive damages in the water/steam cycle. However, there is still a lack of sufficient data on the thermal stability of FFA corrosion inhibitors. This paper presents a comprehensive critical review and state‐of‐the‐art assessment of the results obtained from studying the thermolysis of FFA corrosion inhibitors in power plant water/steam cycle conditions, highlighting the relevance for practical application and research needs. Temperature, exposure time, initial concentration, and alkalizing agents were identified as key factors influencing the thermal stability of FFA in high temperature power plant water. Organic acids are found in concentrations harmless to metal tubes. Advanced scientific background information and additional research are required on this topic.

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Section: Effect Of Residence Timementioning

confidence: 99%

Section: Decomposition Products Of Odamentioning

confidence: 99%

Section: Decomposition Reactions Of Odamentioning

confidence: 99%

Section: Decomposition Reactions Of Odamentioning

confidence: 99%

See 2 more Smart Citations

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Vidojkovic,

Mijajlovic,

Lindeboom

et al. 2023

Energy Science & Engineering

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Moyamoya disease – a rare disease that a clinician should know about

Korolchuk

2022

jour

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Ischemic stroke in young patients is an actual problem of modern angioneurology. You should know that in addition to the common causes of stroke (blood vessels, heart and circulatory system pathology, diabetes mellitus), one of the important ones is moyamoya disease. It has become more frequently registered among patients, including those of non-Asian origin in recent times. The disease often manifests itself as a stroke or transient ischemic attacks, and may initially be accompanied by various neurological manifestations for a long time. Late diagnosis of moyamoya disease due to the lack of knowledge of outpatient practitioners about this pathology may result in a stroke for the patient. It is a multifactorial disease with a genetic predisposition and is manifested by vascular remodeling in the system of internal and external carotid arteries (luminal occlusion) with the development of a collateral network resembling “cigarette smoke” during angiography. This defi nition is a literal translation of “moyamoya” from Japanese. The article gives a comprehensive, all-around view of the disease, the tactics of its detection and treatment, with an emphasis on modern methods of surgical revascularization. A clinical case from practice is of interest to internist clinicians as it is connected with atypical manifestation of the disease in an 18-year-old patient. The doctors focused on arterial hypertension as the main cause of the patient’s complaints, and moved away from the algorithm for detecting cerebral vascular pathology.

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Cardiac arrhythmias and stroke

Cited by 2 publications

References 0 publications

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Moyamoya disease – a rare disease that a clinician should know about

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