Effect of post-weld heat treatment on microstructure, hardness and low-temperature impact toughness of electron beam welds of NIFS-HEAT-2 and CEA-J57 heats of V–4Ti–4Cr alloy

Bead-on-plate electron beam welding in high vacuum atmosphere was applied to the plates of NIFS- HEAT-2 and CEA-J57 heats of V–4Ti–4Cr alloy. Effect of post-weld heat treatment (PWHT) in the temper- ature range 673–1273 K on the hardness, impact toughness at 77 K and microstructure of weld metal was investigated. After PWHT at 773 K, hardness of weld metal slightly decreases from 180 HV 100 (as-welded state) to ∼170 HV 100 while absorbed energy increases up to ∼10 J showing ductile fracture mode. PWHT at 973 K results in re-hardening of weld metal up to ∼180 HV 100 caused by re-precipitation of Ti–C,O,N precipitates and corresponding decreasing absorbed energy to ∼2 J with brittle fracture mode. PWHT in- between 1073–1273 K results in gradual recovery of hardness towards values comparable with those of base metal. Impact toughness (77 K) of weld metal after PWHT at 1073K is not recovered nether to the value in as-welded state nor to that one of base metal

Impact properties of electron beam welds of V-4Ti-4Cr alloys NIFS-HEAT-2 and CEA-J57

International audienc

RENAL HEMODYNAMICS EVALUATION IN PATIENTS SUFFERING FROM RHEUMATOID ARTHRITIS WITH AND WITHOUT COMORBID HYPERTENSION

Aim. To study the features of renal arterial blood flow in patients suffering from rheumatoid arthritis, its interaction with visual markers of atherosclerosis in the presence of comorbid hypertension.Materials and methods. 113 patients with rheumatoid arthritis (RA) were enrolled into this study. Depending on the comorbidity of hypertension the patients were divided into two groups: without (n=53) and with hypertension (n=60). The comparison group consisted of 41 patients with arterial hypertension without RA. Clinical characteristics and blood biochemistry of all the patients were measured. Renal arterial resistance index (RI), presence of atherosclerotic plaques (ASP) in the carotid arteries were assessed by ultrasound scan.Results. In this investigation we report the correlation of the of renal resistive index (RI) and ultrasound signs of carotid atherosclerosis with hypertension in patients with RA. It was found out that there is the increase of RI in RA associated with the age of patients, the onset of the disease at a later age, the presence of atherosclerotic plaques in the carotid arteries and hypertension. In addition, patients with RA had a high frequency of bilateral RI increase by more than 0.7 (64%). Patients with bilateral high RI had a two-fold increase in the registration rate of atherosclerotic plaques in both group of patients with RA.Conclusion. Increased renal arteries RI in patients with RA is a factor associated with the comorbid hypertension and accompanied by more significant atherosclerotic changes in the carotid arteries in the form of an increased incidence of atherosclerotic plaques

THE RUSSIAN DATA OF INTERNATIONAL ENDORSE REGISTER (EPIDEMIOLOGIC INTERNATIONAL DAY FOR THE EVALUATION OF PATIENTS AT RISK OF VENOUS THROMBOSIS IN ACUTE HOSPITAL CARE SETTING)

Aim. To estimate a risk factor frequency of venous thromboembolism (VTE) in patients urgently hospitalized in hospitals, and also to estimate of patients part having effective prevention of VTE.Material and methods. ENDORSE (Epidemiologic International Day for the Evaluation of Patients at Risk of Venous Thrombosis in Acute Hospital Care Setting) is the international register. Patients of 40 years and older hospitalised in therapeutic departments as well as patients of 18 years and older hospitalised in surgical departments (358 hospitals in 32 countries) were included in the register. The case history analysis of all patients was performed for estimation of risk VTE and evaluation of preventive therapy quality according to American College of Chest Physicians (ACCP) Recommendation 2004.Results. Totally 68 183 patients (including 30 827 (45%) surgical patients and 37 356 (55%) therapeutic patients) were enrolled in Global ENDORSE Register. Russian centers enrolled 4 788 patients (including 2 829 (59%) surgical patients and 1 959 (41%) therapeutic patients). Totally 35 329 (51,8%) patients enrolled in Global ENDORSE Register (64,4% of surgical patients (19 842) and 41,5% of therapeutic patients (15 487)) had VTE risks. In Russia 2 188 enrolled patients (45,7%) had VTE risks (52% of surgical patients (1 470) and 36,7% of therapeutic patients (718). Totally 17 732 (50,2%) patients enrolled in Global Register ENDORSE and having VTE risks received VTE preventive therapy according to АССР Recommendations 2004. In Russia 521 (23,8%) patients enrolled in Global ENDORSE Register and having VTE risks received VTE preventive therapy according to АССР Recommendations 2004. It is more than 2 times less in comparison with world level (р<0.001).Conclusion. There are a lot of patients with VTE risks in hospitals. It is necessary to improve preventive therapy of VTE due to better hospital management and more active use of АССР Recommendations 2004

Пікування лізоцимо- вмісними засобами хворих на червоний плоский лишай при стоматологічній патології

Prevalence and severity of generalized parodontitis depend especially on the course of diseases affecting theoral mucosa and those ones which are characterized by involvement of the oral mucosa. These diseases include mainly lichen planus. The common pathogenic agent of generalized parodontitis and lichen planus as well as of combination of them is inflammation, as generalized parodontitis is inflammation of parardontium tissue characterized by destruction of periodontium and dental ligamentous apparatus of the alveolar bone and lichen planus is a chronic inflammatory disease of skin and oral mucosa. The purpose is to study processes of lipid peroxidation in the saliva of patients with lichen planus of the skin along with chronic generalized parodontitis.Исследовано состояние процессов пероксидного окисления липидов в слюне больных типичным крас-ным плоским лишаем кожи в сочетании с хроническим генерализованным пародонтитом. Получено дан-ные, которые свидетельствуют о снижении у этих больных резистентности к пероксидному окислению,что может быть одним из механизмов повреждения тканей полости рта. Разработан комплекс лечебно-профилактических мероприятий, в который входят: системная терапия красного плоского лишая кожи,профессиональная гигиена полости рта с использованием зубного эликсира “Лизомукоид”, лечебно-профилактической зубной пасты “Лакалут актив”. Предложенный метод терапии оказался достаточноэффективным для лечения хронического генерализованного пародонтита на фоне типичной формыкрасного плоского лишая кожи.Досліджено стан процесів пероксидного окиснення ліпідів у слині хворих на типовий червоний плоский лишай шкіри в поєднанні з хронічним генералізованим пародонтитом. Одержано дані, які свідчать про зниження в цих хворих резистентності до пероксидного окиснення, що може бути одним із механізмів ушкодження тканин порожнини рота. Розроблено комплекс лікувально-профілактичних заходів, до якого входять: системна терапія червоного плоского лишаю шкіри, професійна гігієна порожнини рота із застосуванням зубного еліксиру “Лізомукоїд”, лікувально-профілактичної зубної пасти “Лакалут актив”.Запропонований метод терапії є достатньо ефективним для лікування хронічного генералізованого пародонтиту на тлі типової форми червоного плоского лишаю шкіри

Receivables Management and Factors Influencing Its Quality

Purpose –  to scientifically substantiate the factors influencing the quality of receivables management. Design/Method/Research approach. This study uses a systematic approach and methods of synthesis, semantic analysis, historical analysis, analogies, generalization, explanation, classification and graphic are applied. Findings. Management of receivables, which for the seller's company are the debts of buyers - is one of the components of modern relations between enterprises. Limited resources force managers to select tools and sources of financing sales with deferred payment, as well as to analyze the factors that affect the quality of management of such deferred payment. The subsystem of receivables management is presented and analyzed, in which the factors (elements) important for effective management in the enterprise management system are highlighted, which are usually analyzed and corrected during the management of the level of receivables. It is proved that this subsystem needs to be refined taking into account the factors of the macroenvironment. It is emphasized that the factors of influence should be singled out for wholesalers, as in the wholesale chain compared to retail trade, the markup on the value of goods is reduced and it is necessary to financially ensure the sale of goods with deferred payment. Accounts receivable management is considered to be high quality and efficient when, as a result of such management, enterprises become financially stable. The system of factors, where the main role belongs to economic factors, is improved, the approach to their quantitative estimation is offered. Theoretical implications. The theoretical two-level mathematical model of quantitative estimation of factors of influence on quality of management of receivables of the enterprises is offered. Practical implications. The results of the study can be used in the management of receivables of enterprises, the formation of tools for assessing the quality of receivables and identify the main factors influencing the quality of receivables. Originality/Value. The scientific novelty of the research is the content of separate factors of influence on the quality of receivables management is generalized, structured and investigated. Research limitations/Future Research. Prospects for further research is the development of a comprehensive application mechanism for managing receivables, taking into account the factors influencing its quality and industry characteristics of enterprises. Paper type – theoretical