The article presents the results of a study of changes in the indicators of general, biochemical blood tests and individual coagulogram parameters in patients with COVID-19 pneumonia who were in hospital. The authors found that patients with COVID-19 pneumonia had leukopenia, accelerated ESR, thrombocytopenia, lymphopenia, neutrophilia, which were more often observed in patients with lesions of 25% or more of lung tissue. Leukocytosis was only in 3 (3.7%) patients and only in severe lung damage. An increase in the plasma level of D-dimer, fibrinogen, procalcitonin, lactate dehydrogenase, an increase in the value of the prothrombin index, a decrease in the level of plasma albumin was detected only with a lesion of 50% or more of lung tissue. There was also an increase in the plasma levels of creatinine, alanine aminotransferase, aspartate aminotransferase, creatine phosphokinase, and C-reactive protein in the examined patients. The possibility of risk stratification and assessment of the need for hospitalization of patients with COVID-19 pneumonia, determination of the severity of the course of viral interstitial SARS-CoV-2 pneumonia, evaluation of the effectiveness of prescribed therapy and its correction using laboratory predictors is relevant, among other things, to reduce the risk of post-infectious complications, prevention of possible death.
This paper reports on the study of the effect of ion cleaning of emitting cleaved facet of 9xx nm laser diodes based on InGaAs/AlGaAs/GaAs on their limiting radiation power. Measured maximal power and the percentage of laser diodes with a visual manifestation of catastrophic optical damage in the active region were analyzed. It was found that short-term (1 min) low-energy treatment with argon and hydrogen ions does not lead to changes in the parameters of laser diodes, while treatment with nitrogen ions results in a decrease in the maximal output power and an increase in the probability of catastrophic optical damage. It is also shown that the use of an ion source based on electron cyclotron resonance leads to better results compared to a End Hall source or radiofrequency source with inductively coupled plasma, due to the lower energy of the ions. Keywords: Ion cleaning, laser diode, catastrophic optical damage, maximal output power, passivation, nitridization.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.