The Effect of Absorbed Hydrogen on the Rotors of Steel Machining Products During Powerful Turbo Aggregate Repairs.

Rotor shafts are the most heavily loaded and accident-prone parts of powerful turbine generators, which are cooled using hydrogen. To eliminate damage sustained during operations, repair work was carried out, including the removal of defective parts, surfacing, and turning. This study tested the machinability of the rotor shaft using prototypes made from 38KhN3MFA steel.

Graphene/Metal Composites Decorated with Ni Nanoclusters: Mechanical Properties.

With the developments in nanotechnology, the elaborate regulation of microstructure shows attractive potential in the design of new composite materials. Herein, composite materials composed of graphene network filled with metal nanoparticles are analyzed to optimize the fabrication process and mechanical properties. In the present work, molecular dynamic simulations are used to analyze the possibility of obtaining a composite structure with Ni-decorated graphene.

Maslach Burnout Inventory versus Boyko's Burnout Inventory: a comparative study and methodology.

Background: In Russia, the following two questionnaires are mainly used to study the burnout syndrome: Maslach Burnout Inventory (MBI) and Boyko's Burnout Inventory (BBI). Despite the fact that the questionnaires are based on different theoretical models and composition of the scales, they evaluate essentially the same construct. A few published sources provide data on correlations between the results of measuring burnout using these methods.

[D2 and D3 lymph node dissection for colon cancer].

Objective: To evaluate surgical and oncological results of standard and extended lymph node dissection (D2 and D3) in patients with colon cancer.

Material And Methods: We analyzed treatment outcomes in 74 patients with colon cancer stage T1-4aN0-2M0 who underwent right- and left-sided hemicolectomy, resection of sigmoid colon with standard and extended lymph node dissection (D2 and D3).

Results: Surgical approach and level of D3 lymph node dissection did not increase intra- and postoperative morbidity.

Ontogenetic instars of the oribatid mite Spatiodamaeus kalugaensis sp. nov. (Acari, Oribatida, Damaeidae) from Russia.

A new species of the genus Spatiodamaeus (Oribatida, Damaeidae) is described from Russia, based on adult and juvenile instars collected from bark of Acer platanoides and soil-litter of mixed and broadleaf forests in European part of Russia and Western Siberia. The adult of Spatiodamaeus kalugaensis sp. nov.

Contribution to knowledge of the oribatid mite genus Symbioribates (Acari, Oribatida, Symbioribatidae), with descriptions of two new arboreal species from Vietnam.

The family Symbioribatidae is recorded in Vietnam for the first time. Two new arboreal species of SymbioribatesS. bimorphus sp.

Going Asexual: A Survey of Mites of the Genus (Acari: Acaridae) Revealing a Large Number of New Parthenogenetic Species in the Holarctic Region.

Mites of the genus (Acari: Acaridae) are distributed worldwide; they inhabit concealed habitats and include several beneficial and economically important species. However, species identification is difficult because many species are poorly described or delimited and their phoretic stages are unknown or uncorrelated. Furthermore, is interesting because it includes entirely asexual (parthenogenetic) species.

sp. n., a New Subcortical Mite Species (Acari: Acaridae), with a COX1 DNA Sequence Analysis of Several Economically Important Species of .

As part of a survey of the subcortical astigmatic mites of Crimea, we discovered a new sexual acarid species, sp. n. This species was cultured in the laboratory to correlate the adult and deutonymphal stages.

[A case report of organ-preserving surgical treatment for large pleomorphic adenoma of the larynx].

Tumors of the salivary glands account for no more than 5% of all neoplasms of the head and neck. About 70% of all benign neoplasms of the salivary glands are pleomorphic. One of the rare localizations of pleomorphic adenoma is the larynx.

[COVID-19 associated sino-orbital mucormycosis].

Objective: To analyze the dynamics of symptoms in patients with COVID-19 associated sino-orbital mucormycosis.

Material And Methods: We describe a series of 13 patients with COVID-19 associated sino-orbital mucormycosis aged 43 to 80 years diagnosed from August to October 2021. All of the patients had a severe disease and required noninvasive ventilation or intubation and administration of dexamethasone.

Beyond the Limits of Light: An Application of Super-Resolution Confocal Microscopy (sCLSM) to Investigate Eocene Amber Microfossils.

Amber is known as one of the best sources of fossil organisms preserved with exceptional fidelity. Historically, different methods of imaging have been applied to amber, including optical microscopy and microtomography. These methods are sufficient to resolve millimeter-scaled fossils.

Taxonomy of European Damaeidae (Acari, Oribatida) XI. European species of the genus Piribelba Miko 2021: redescriptions of P. rossica (Bulanova-Zachvatkina, 1957) and P. piriformis (Mihelčič, 1964) using morphology and DNA sequence data.

Two closely related species of the genus Piribelba (Oribatida, Damaeidae) are redescribed based on morphology of adults and developmental instars. Redescription of P. rossica (Bulanova-Zachvatkina, 1957) is based on specimens collected in Russia, including specimens identified by Bulanova-Zachvatkina; redescription of P.

Taxonomic contribution to the knowledge of Galumnidae (Acari, Oribatida, Galumnidae) from Cuba.

The present study is based on galumnid mites (Oribatida, Galumnidae) collected from leaf litter of two mixed forests in Cuba; six species from three genera are identified. Three new species-Pergalumna (Pergalumna) cienfuegosensis sp. nov.

[Anomalous bony portion of the Eustachian tube].

Reports of congenital anomalies of the Eustachian tube are scare. These anomalies are usually associated with chromosomal abnormalities, most often in oculoauriculovertebral spectrum. We present a case of completely bony widened Eustachian tube, entering the cells of sphenoid sinus lateral recess.

The pseudoscorpions of the Caucasian bogs: part I. Description of Neobisium (Neobisium) adjaricum sp. nov. and redescription of the holotype of N. (N.) vilcekii Krumpál, 1983 (Arachnida, Pseudoscorpiones, Neobisiidae).

A new species of pseudoscorpions, Neobisium (Neobisium) adjaricum, is described and diagnosed. It was collected in the habitats of Ispani lowland mires in Transcaucasia (Republic of Adjara, Georgia). The habitat of N.

Successful Osteopathic Manipulative Treatment of Foot Drop.

This case report presents a 63-year-old male patient with chronic left foot drop. The etiology for his condition most likely involved lateral lumbar stenosis and/or sacroiliac joint dysfunction resulting in radiculopathy and subsequent symptoms. The patient was previously recommended a surgical approach for his condition.

[Results of redo liver resections for metastatic colorectal cancer].

Objective: To analyze patients undergoing redo liver resections for metastatic colorectal cancer.

Material And Methods: The study included 14 patients with colorectal cancer who underwent several redo liver resections for metastatic lesions between September 2011 and June 2021. Mean age of patients was 63.

[Gastrointestinal stromal tumors: potential of minimally invasive surgical interventions].

Objective: To analyze the issue of gastrointestinal stromal tumors (GISTs) and potential of minimally invasive surgical interventions.

Material And Methods: We analyzed postoperative outcomes in 97 patients with gastric and intestinal GISTs who underwent surgical treatment at the National Medical Research Centre for Oncology between 2015 and 2020.

Results: Twenty (24.

[Transanal endoscopic rectal resection: immediate and long-term results].

Objective: To analyze the results of transanal endoscopic microsurgery in patients with rectal tumors.

Material And Methods: We analyzed 87 transanal endoscopic resections of rectal benign tumors (35 patients) and rectal cancer cT1N0M0 (52 patients) for the period since 2012.

Results: There were 2 (3.

Zetorchestes krisperi sp. nov. (Acari: Oribatida: Zetorchestidae) from Vietnam, with juvenile morphology and identification key to known species of the genus.

The description of a new species of oribatid mites (Oribatida) of the family ZetorchestidaeZetorchestes krisperi sp. nov.is proposed based on adult and tritonymph specimens collected from rainforest soil of Bi Dup-Nui Ba National Park (southern Vietnam).

Technology of Two-dimensional Bioimpedance Analysis of the Human Body Composition.

The BIA primary result sheets as a rule contain one-dimensional graphical scales with a selected area of normal values. In 1994, Piccoli . proposed BIVA, an alternative form of BIA data presentation, where two bioimpedance parameters are considered simultaneously as tolerance ellipses: resistance and reactance normalized to height.

A new genus and two new species of Tarsonemidae (Acari: Heterostigmata) associated with bark beetles (Coleoptera: Curculionidae: Scolytinae) from Peru.

A new genus and species, Unguitarsonemus paradoxus n. gen., n.

[Traumatic perilymphatic fistula with the luxation of the stapes into vestibule].

A case of perilymphatic fistula with the luxation of the stapes into vestibule was described, which was caused by a direct damage of the eardrum (the patient cleaned the right ear with a cotton swab and received a strong blow to the arm). The moment of injury was characterized by severe pain, a significant hearing loss, the appearance of tympanophonia and vertigo. Clinical examination revealed the eardrum rupture.

The cave-dwelling false scorpion genus Pseudoblothrus Beier, 1931 (Arachnida: Pseudoscorpiones: Syarinidae) in the Crimean Peninsula.

Based on morphological and molecular studies of material from caves in three karst regions of Crimea, the small, apparently relictual, Euro-Mediterranean and Macaronesian false scorpion genus Pseudoblothrus Beier, 1931 is shown to contain only one troglobiont species there, P. roszkovskii (Redikorzev, 1918), of which P. ljovuschkini Krumpál, 1984 and Obisium tauricum Lebedev, 1927 are junior subjective synonyms.