Equity factors during the COVID-19 pandemic: Difficulties in emergency remote teaching (ert) through online learning.

Since the onset of the COVID-19 pandemic, () has become the prevalent form of learning at many universities worldwide. At the same time, voices around the world have pointed to in online learning in general and to concerns regarding in particular. The current study sought to increase knowledge about specific in ERT-OL and about the relationships between these elements from the standpoint of the following -, , and among students who are also parents or working.

[(EXPERIENCE WITH ALBENDAZOLE TREATMENT IN CHILDREN WITH CYSTIC ECHINOCOCCOSIS)].

The tolerability and efficiency of specific chemotherapy with albendazole were analyzed in 18 patients with cystic echinococcosis at various sites. The most common complication of albendazole treatment was its hepatotoxic effect. Al- bendazole chemotherapy during at least its 3 cycles was observed to be highly effective in preventing recurrent echinococ- cosis in children.

[Results of studies of human dirofilariasis in Russia].

Human dirofilariasis is a pressing health problem in Russia. By 2014, there have been as many as 850 Dirofilaria repens-infested people living in 42 subjects of the Russian Federation. One of the favorable factors for circulation and spread of invasion is a temperature of above +20-24 degrees C; when the latter is maintained during at least 20 days there may be 1.

[Pseudoinvasion and transient carriage of the larvae of arthropods and soil nematodes in humans: problems and consequences. The authors' observations and a literature review].

The paper describes cases of pseudoinvasion and transient carriageof the larvae of arthropods and geohelminths. It highlights the objective and subjective factors in the diagnosis of arthropod-borne diseases and geohelminthiasis, which give rise to misdiagnosis. Distinctions between real invasion, transient invasion, and pseudoinvasion are pointed out.

Determination of polychlorinated biphenyls in soil and sediment by selective pressurized liquid extraction with immunochemical detection.

A selective pressurized liquid extraction (SPLE) method was developed for a streamlined sample preparation/cleanup to determine Aroclors and coplanar polychlorinated biphenyls (PCBs) in soil and sediment. The SPLE was coupled with an enzyme-linked immunosorbent assay (ELISA) for an effective analytical approach for environmental monitoring. Sediment or soil samples were extracted with alumina, 10% AgNO3 in silica, and sulfuric acid impregnated silica with dichloromethane at 100°C and 2000 psi.

Development of an enzyme-linked immunosorbent assay and a beta-1 adrenergic receptor-based assay for monitoring the drug atenolol.

Two approaches for monitoring atenolol (ATL) were applied: an immunochemical assay and a competitive-binding assay, based on the interaction between ATL and its target receptor, β1 adrenergic receptor (β1AR). Polyclonal antibodies (Abs) for ATL were generated, and a highly specific microplate immunochemical assay, that is, an enzyme-linked immunosorbent assay (ELISA), for its detection was developed. The ATL ELISA exhibited I50 and limit of detection (I20) values of 0.

Development of a multianalyte enzyme-linked immunosorbent assay for permethrin and aroclors and its implementation for analysis of soil/sediment and house dust extracts.

Development of a multianalyte enzyme-linked immunosorbent assay (ELISA) for detection of permethrin and aroclors 1248 or 1254 and implementation of the assay for analysis of soil/sediment samples are described. The feasibility of using the multianalyte ELISA to monitor aroclors 1254 and permethrin simultaneously was tested with permethrin and aroclor standards and with aroclor- and permethrin-containing soil/sediment and house dust samples. Comparison of the I₅₀ and I₂₀ values of the multianalyte with those of a single-analyte assay revealed similar results, and multianalyte ELISA determination of analyte amounts in soil/sediment dust samples yielded similar results to those of a single-analyte assay.

[Dirofilariasis in the Moscow Region, a low disease transmission risk area].

The spread of canine and human dirofilariasis was first studied in the Moscow Region, a low disease transmission risk area. D.repens infestation was found to have a tendency to increase in Moscow residents with the imported cases being predominant.

Development of an immunoassay and a sol-gel-based immunoaffinity cleanup method for coplanar polychlorinated biphenyls from soil and sediment samples.

Two polychlorinated biphenyls (PCB) enzyme linked immunosorbent assays (ELISAs) were developed using goat PCB purified immunoglobulin (IgG) antibodies (Abs). The IgGs exhibited the highest affinity toward PCB-77 (24 ng mL(-1)) with sensitivities in the range of 6-11 ng mL(-1). The Abs cross-reacted with PCB-126 and the heptachlorodibenzofuran 1,2,3,4,6,7,8-HpCDF but not with PCB-169, PCB-118, Aroclor 1232, 1248, 1260 or the hexachlorodibenzofuran 2,3,4,6,7,8-HxCDF.

Monitoring of progestins: development of immunochemical methods for purification and detection of levonorgestrel.

A polyclonal antibody (Ab) for the progestin levonorgestrel (LNG) was generated, and immunochemical assays for its detection, clean-up and concentration were developed. A highly specific microplate diagnostic assay for the detection of LNG was developed that used the enzyme linked immunosorbent assay (ELISA) method. The LNG ELISA developed was sensitive and reproducible; it exhibited I(50) and I(20) values of 3.

PBAN receptor: employment of anti-receptor antibodies for its characterization and for development of a microplate binding assay.

This study describes generation of an anti-PBAN receptor (PBAN-R) antiserum and its employment for the characterization of the PK/PBAN-R(s). The antiserum recognized, in a specific and dose-dependent manner, the presence of PBAN-R in pheromone gland membrane preparations of three female moths: Heliothis peltigera, Helicoverpa armigera and Spodoptera littoralis. It also reacted specifically with the S.

Reference-wave solutions for high-frequency fields propagating in random media.

Ray theory plays an important role in determining the propagation properties of high-frequency fields and their statistical measures in complicated random environments. According to the ray approach, the field at the observer can be synthesized from a variety of field species arriving along multiple ray trajectories resulting from refraction and scattering from boundaries and from scattering centers embedded in the random medium. For computations of the statistical measures, it is desirable therefore to possess a solution for the high-frequency field propagating along an isolated ray trajectory.

Enzyme-linked immunosorbent assay (ELISA) and sol-gel-based immunoaffinity purification (IAP) of the pyrethroid bioallethrin in food and environmental samples.

Enzyme-linked immunosorbent assay (ELISA) and sol-gel-based immunoaffinity purification (IAP) methods for the pyrethroid bioallethrin were developed and applied for monitoring bioallethrin in spiked food, soil, and dust samples. Attempts to determine bioallethrin content in fruit and vegetable extracts revealed high variability between sample preparations and marked interferences with the assay. Sol-gel IAP followed by solid-phase sample concentration was effective in removing the interfering components and resulted in high recovery of bioallethrin from spiked crude acetonic extracts of fruits and vegetables, even in the presence of high extract concentrations (28%).

Response of immunocompetent and immunosuppressed Spodoptera littoralis larvae to baculovirus infection.

The Mediterranean lepidopteran pest Spodoptera littoralis is highly resistant to infection with the Autographa californica multiple nucleopolyhedrovirus (AcMNPV) via the oral route, but highly sensitive to infection with budded virus (BV) via the intrahaemocoelic route. To study the fate of AcMNPV infection in S. littoralis, vHSGFP, an AcMNPV recombinant that expresses the reporter green fluorescent protein gene under the control of the Drosophila heat-shock promoter, and high-resolution fluorescence microscopy were utilized.

[Migrating subcutaneous myasis with systemic manifestations caused by gadfly larvae].

The paper describes a case of cutaneous myiasis caused by the larvae of Hypoderma bovis. Its prolonged recurrent course over 4 months was observed. It appeared as migrating mass lesions, toxicoallergic reactions, and syncope.

[Strongyloidiasis im Moscow region].

The paper presents two cases of infection with Strongyloides stercoralis (in a 13-year-old boy and in a 93-year-old female), occurred in the Moscow Region, which is indicative of the resurgence of stronglyoidiasis in the Moscow Region. Although the likelihood of this infection in this region is little, nevertheless, strongyloidiasis should be borne in mind in examining patients who are not leaving for well-known endemic areas if they have an allergic reaction of unclear etiology, eosinophilia, and digestive disorders. In these cases, the syndromic-and-empiric approach to justifying and performing chemotherapy is recommended due to the inadequate efficiency of parasitological methods for diagnosing strongyloidiasis at the low rate of invasion.

Reference-wave solution for the two-frequency propagator in a statistically homogeneous random medium.

Spatial and temporal structures of ultrawide-band high-frequency fields can be appreciably affected by random changes of the medium parameters characteristic of almost all geophysical environments. The dispersive properties of random media cause distortions in the propagating signal, particularly in pulse broadening and time delay. Theoretical analysis of pulsed signal propagation is usually based on spectral decomposition of the time-dependent signal and the analysis of the two-frequency mutual coherence function.

[Human dirofilariasis in the Moscow region].

Dirofilaria repens Railliet et Henry, 1911 was for the first time studied in the Moscow Region where 11 patients (6 males and 5 females) aged 4-72 years were recorded in 2000-2002. The geographical distribution (the southern and south-eastern parts of the region) of local cases of dirofiliriasis, was observed. There was a relatively high rate of D.

Reference-wave solutions for the high-frequency field in random media.

Ray trajectories, as has been shown in the recently formulated stochastic geometrical theory of diffraction, play an important role in determining the propagation properties of high-frequency wave fields and their statistical measures in complicated random environments. The field at the observer can be presented as the superposition of a variety of field species arriving at the observer along multiple ray trajectories resulting from boundaries and scattering centers embedded into the random medium. In such situations the intensity products from which the average intensity measures can be constructed and which, in general, are presented as even products of the total field, will contain sums of products of mixed field species arriving along different ray trajectories.

Immunochemical approaches for purification and detection of TNT traces by antibodies entrapped in a sol-gel matrix.

A highly sensitive immunochemical method for immunoaffinity purification (IAP) and detection of trace amounts of TNT was developed on the basis of antibodies (Abs) in a ceramic matrix (sol-gel). The study resulted in: (i) a highly sensitive and reproducible TNT ELISA (I50 and I20 values of 0.4 +/- 0.

[A fatal case of trichinelliasis with intensive invasion and acute massive hemorrhage from a stomach ulcer].

The paper deals with a fatal case of trichinosis in a 61-year-old male due to acute massive gastric hemorrhage from the old silent gastric ulcer developed at week 8 after the onset of infection (or at week 3 after the appearance of the first clinical signs). At autopsy, the method of ingestion of cross-striated muscular samples revealed high Trichinella spiralis infection rates: from 135 larvae per g of muscles of the tongue to 512 larvae in the diaphragm. Infection had occurred due to long-term (1-month) ingestion of the pork obtained from a subsidiary farm of Moscow Province.

[The procedure for the wide use of praziquantel in a complex of measures to control opisthorchiasis. 2. The tolerance and efficacy of Russian-made azinox in mass treatment in foci].

Whether the Russian praziquantel analog azinox can be widely used in the foci of opisthorchiasis was first assessed. The outpatient treatment of 7405 patients with the agent in doses of 30, 40, 60 mg/kg body weight revealed that azinox tolerance did not depend upon the intensity and degree of clinical infection signs but it was slightly worse when a dose of 60 mg/kg was given. Children virtually showed no adverse reactions, in adults their frequency was no more than 52 +/- 1.