Infrared-based visualization of exhalation flows while wearing protective face masks.

Since the onset of the COVID-19 pandemic, a large number of flow visualization procedures have been proposed to assess the effect of personal protective equipment on respiratory flows. This study suggests infrared thermography as a beneficial visualization technique because it is completely noninvasive and safe and, thus, can be used on live individuals rather than mannequins or lung simulators. Here, we examine the effect of wearing either of three popular face coverings (a surgical mask, a cloth mask, or an N95 respirator with an exhalation valve) on thermal signatures of exhaled airflows near a human face while coughing, talking, or breathing.

[Influence micronization and cooking on changes in inhibitor tripsin of leguminous plants].

Legumes are one of the cheapest protein sources. But most of them contains inhibitors tripsin and needs in long processing. Micronization and cooking of legumes only partly destructs the protease inhibitors.

[The epidemiology, risk factors and present-day aspects of allergic disease prevention in an industrial center].

The article is dedicated to the topical problem of allergic diseases in various population groups of a large industrial region of Moscow suburb, and presents a brief review of present-day epidemiological data on allergic pathology prevalence as well as authors' own data on the morbidity of bronchial asthma, allergic dermatoses, and allergic rhinitis. The paper also contains the results of an analysis of allergic pathology dynamics within 5 to 10 years, and a retrospective analysis of allergic pathology structure in adolescents. The researchers undertook a multifactor analysis of population habitat in the town Mitishchy, based upon ecological and hygienic data concerning atmospheric air and water composition.

[The immunoenzyme analysis of the specific alpha2-glycoprotein in the brain in patients with neuropsychic diseases].

The authors have developed an enzyme immunoassay test system for measurements of the specific cerebral alpha 2-glycoprotein (alpha 2-GP), whose sensitivity limit is 0.8 ng/ml. Blood serum alpha 2-GP level is 7 ng/ml, cerebrospinal fluid level is 12.

[Identification, isolation and physico-chemical properties of neurospecific alpha2-globulin].

In the immunization process of rabbits with the protein fraction of the water-salt extract from human brain partially and concentrated at 500-600 times was received antiserum revealed brain specific alpha 2-globulin that is not identical to the known cytoplasmatic brain specific antigens. This antigen has got electrophoretic mobility of alpha 2-globulins, molecular weight 90 +/- 10 kD and isoelectric point 4.1-5.

[Parellel blood circulation with oxygenation of blood in severe poisoning with carbon monoxide fumes].

The authors present an analysis of treatment in 141 patients with acute carboxyhemoglobinemia, in 110 of them severe intoxication was noted. All these patients were treated taking into account the degree of intoxication, the period of time elapsed since the moment of the intoxication till the onset of therapy, and the presence of biochemical shifts in blood. In 31 patients being in an extremely poor comatous state with considerable disorders in gas balance, persistant hemodynamic disturbances and manifest humoral shifts a parallel perfusion with extracorporeal oxygenation of blood was performed with medical drug therapy in the background.