Influence of the Ti-TiN-(Y,Ti,Al)N Nanolayer Coating Deposition Process Parameters on Cutting Tool Oxidative Wear during Steel Turning.

Ti-TiN-(Y,Ti,Al)N coatings with a three-layer architecture (adhesive Ti layer, transition TiN layer, and wear-resistant (Y,Ti,Al)N layer) were studied. When depositing coatings, three arc current values of the yttrium cathode were used: 65, 85, and 105 A. The yttrium contents in the coatings were 30, 47, and 63 at.

Diphtheritic polyneuropathy: clinical analysis of severe forms.

Background: Diphtheritic polyneuropathy (DP) is a dangerous complication of diphtheria, especially its severe forms with bulbar, respiratory tract, and circulatory disturbances. However, the clinical picture of severe forms of DP is practically unknown.

Objective: To investigate the clinical features and peculiarities of the course of severe forms of DP.

[Expression of NADPH-diaphorase in the peripheral nerve and its changes at different stages of diphtheritic polyneuropathy].

Distribution and intensity of NADPH-d reactivity, a marker for enzyme of the nitric oxide synthesis, in nervus suralis biopsies in severe DP were studied at light and electron microscopic levels. The study of control specimens has shown that NADPH-d reactivity was permanently present in Schwann cells (SC) and was distributed in all parts of their cytoplasm. Axon and myelin were devoid of NADPH-d reactivity.

[Appearance of the flutter on surface of the body of whale-like dolphins].

In the article a problem of the flow near of elastic surface body whalelike is considered. The opportunity appearance of the flutter on a surface body is shown. Additional capacity, necessary dolphin is designed at navigation in case of occurrence the flutter.

[Diphtheritic polyneuropathy: clinico-morphologic study].

18 patients with grave DP treated with a long-term artificial pulmonary ventilation and feeding through a naso-gastric probe were studied. Biopsies of n. suralis taken at different periods after the appearance of the first signs of DP (from the 19th to the 69th day) were studied at light and electronic microscopy.

[Combination of the sieve effect and ion exchange chromatography during isolation of recombinant alpha2-interferon on the cellosorbent CS KU-23].

Preliminary purification of alpha 2-interferon from the culture liquid on cation-exchange sorbents was studied. Application of a cellosorbent based on the cationite KU-23 resulted in a 20-25-fold purification of recombinant alpha 2-interferon in a one-step process as a result of combination of the sieve effect and ion-exchange chromatography.

[Use of microdispersed forms of crosslinked polyelectrolytes in biotechnology].

The interaction of microdispersions of crosslinked polyelectrolytes with ions of biologically active substances has been studied by physicochemical methods. The processes of ion exchange and physical adsorption, underlying the interaction, can promote flocculation. Of particular importance is the selective flocculation of dipolar ions of biologically active substances.

[Course of apallic syndrome after clinical death during anesthesia].

Anesthesiological errors after clinical death during narcosis for strumectomy are considered. These errors were continuation of surgery after systole, inadequate management of the systemic arterial pressure and cerebral circulation after global ischemia, early switch-off of artificial ventilation of the lungs. All these steps led to prolonged coma, development of the apallic syndrome, and invalidism of the patient.

[Neuroelectromyographic study methods in the complex diagnosis of urinary incontinence in women].

With the purpose of improving a differential diagnosis between stress and urgent forms of UI (urinary incontinence), functional condition was studied of lower urinary tract in 62 women suffering from the above pathologies, using general clinical, urologic and neuroelectromyographic methods. In women suffering from urinary incontinence, a decrease is noted of contractile activity of all the anatomical formations responsible for the continence of urine, and the pattern of the electromyograms recorded permits identification of the form of the pathology. The authors hold the view that the onset of an UI symptom in the majority of the examinees is associated with the degenerative dystrophic lesion of the lumbosacral portion of the spine.

[Problem of pathogenesis of Mycoplasma infection].

It has been shown that irrespective of the primary focus of affliction, M. hominis-induced infection should be regarded as a systemic disease characterized by an immune-mediated inflammation which is contributed to by blood kallikrein-kinin system activation resulting in changes in the coagulative system and fibrinolysis until disseminated intravascular coagulation develops. This allows one to interpret in a new fashion the etiology of some diseases proceeding with signs of vasculitis.

[Plasmapheresis and hormone therapy in severe forms of Guillain-Barré syndrome].

Patients with severe Guillain-Barre syndrome were entered into 2 groups: group I was treated with hormones alone, group II with hormones plus plasmapheresis. The results were not significantly different. In view of recognized effectiveness of plasmapheresis for treatment of the syndrome, corticosteroid addition is inappropriate.

[Appearance of the flutter on the pulse wave].

This work deals with the liquid flow in an elastic blood vessel. The mechanism of the initiation of standing waves was studied. Results of model experiments, both on the hydrodynamic stand and in the aorta of the living dog are presented.

[Effect of thermal treatment on the structure and biological properties of tuberculin].

The effect of heat treatment used in the course of tuberculin production by Mycobacteria tuberculosis cells on the structure and biological activity of tuberculin was studied. Methods of preparative and analytical gel-filtration were used. The largest quantity of the biologically active component was obtained after 2-hour heat treatment of the mycobacteria culture.

[Thrombolytic therapy with streptodekase in ischemic strokes].

Thrombolytic agents previously employed in the treatment of ischemic stroke were associated with adverse side-effects and hemorrhagic complications. The use of streptodekase (S), a Soviet trombolytic drug, which is a long-acting immobilized ensyme proved to be highly effective. The efficacy of S in ischemic stroke was not investigated.