New Science-Intensive Technologies for Electrophysical and Chemical Treatment of Aerospace Parts

2019 ◽  
pp. 46-54
Author(s):  
S.B. Kushnarenko ◽  
A.O. Fomichev ◽  
Y.P. Astakhov ◽  
K.A. Bogdanov ◽  
A.A. Perepechkin ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Combined Treatment ◽  
Treatment Method ◽  
Ultrasonic Field ◽  
Cnc Machine ◽  
Treatment Methods ◽  
New Science ◽  
Electrical Discharge Drilling ◽  
New Treatment ◽  
Materials Used

The paper examines effective hybrid technologies that combine electrophysical and electrochemical methods and enable treatment of parts with different nomenclature. New treatment methods, electrophysical and chemical, are pre-defined for processing conductive materials. By introducing combined treatment methods that bring together ultrasound, electrochemistry and electrical discharge it is possible to boost the treatment process, solve fundamental process tasks that are demanded by industry, and improve the quality of the treated surface. An analysis of the electrical discharge drilling method with an ultrasonic field activation is carried out. The disadvantages of the combined treatment method with the application of ultrasonic oscillations to workpiece are identified. Recommendations are given on determining and justifying the effective application of each method by taking into account the degree of complexity of the treated objects, the materials used and the type of appropriate production. A hybrid electrochemical-electrical discharge CNC machine is developed.

Einsatz eines naturanalogen Algorithmus/Application of a natural analogue algorithm – Reproducible optimization of electrical-discharge drilling

2020 ◽  
Vol 110 (07-08) ◽  
pp. 467-470
Author(s):  
Eckart Uhlmann ◽  
Mitchel Polte ◽  
Jan Streckenbach ◽  
Mirsad Osmanovic ◽  
Julian Börnstein
Keyword(s):  
Industrial Application ◽  
Electrical Discharge ◽  
Electrode Materials ◽  
Electrical Discharge Machining ◽  
Optimization Method ◽  
Hardened Steel ◽  
Evolution Strategy ◽  
Natural Analogue ◽  
Electrical Discharge Drilling ◽  
Materials Used

Dieser Beitrag stellt die Ergebnisse zur Untersuchung der Reproduzierbarkeit des Optimierungsverfahrens Evolutionsstrategie (ES) am Beispiel des funkenerosiven Bohrens vor. Dazu wurden zwei ES-Typen untersucht. Als Elektrodenwerkstoffe kamen Messing für das Werkzeug und für das Werkstück gehärteter Stahl zum Einsatz. Im Ergebnis konnte die Erosionsdauer reproduzierbar um 37 % verringert werden. Dieser Nachweis bildet die Grundlage für den industriellen Einsatz der Evolutionsstrategie beim funkenerosiven Bohren.   This article describes the results of the investigation on the reproducibility of the optimization method of evolution strategy (ES), exemplified by electrical-discharge drilling. Two types of ES were examined. The electrode materials used were brass for the tool and hardened steel for the workpiece. The erosion duration could be reduced by 37 % in a reproduceable manner. This verification is the basis for the industrial application of the ES for the optimization of electrical discharge machining.

Experience of conservative treatment of genital prolapse with urogynecological pessaries

GYNECOLOGY ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 24-26
Author(s):  
Gennady Y Yarin ◽  
Inna A Vilgelmi ◽  
Evgeny V Liuft
Keyword(s):  
Patient Satisfaction ◽  
Pelvic Organ Prolapse ◽  
Conservative Treatment ◽  
Genital Prolapse ◽  
Treatment Method ◽  
Pelvic Organ ◽  
Safety And Efficacy ◽  
Treatment Methods ◽  
Complications Rate

Background. Pelvic organ prolapse is one of the most common women's diseases worldwide. Genital prolapse incidence among women over 50 is on average 41%. There are variety methods for genital prolapse treatment; they are divided into surgical and non-surgical ones. One of the conservative treatment methods is a use of pessaries. According to different studies an efficacy of pessary therapy is approximately 60%. Aim to estimate a safety and efficacy of genital prolapse conservative treatment with a cube pessary on the basis on standardized questionnaires. Outcomes and methods. In ANO “NRITO Clinic” Urology and Gynecology Center 26 women with various degree genital prolapse were treated with pessary within the period from August 2015 to March 2016. Efficacy of pessaries use, patient satisfaction with this treatment method and complications rate were estimated. Results. Urogynecological cube pessary use in a treatment of various types of genital prolapse is quite an effective method (p

scholarly journals Pulp Revascularization of Immature Permanent Teeth: A Review of the Literature and a Proposal of a New Clinical Protocol

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Mélanie Namour ◽  
Stephanie Theys
Keyword(s):  
Treatment Method ◽  
Permanent Teeth ◽  
Clinical Protocol ◽  
Therapeutic Success ◽  
Immature Teeth ◽  
Triple Antibiotic Paste ◽  
New Treatment ◽  
Near Future ◽  
Pulp Revascularization ◽  
Stimulation Of

Tissue engineering is a growing field. In the near future, it will probably be possible to generate a complete vital tooth from a single stem cell. Pulp revascularization is dependent on the ability of residual pulp and apical and periodontal stem cells to differentiate. These cells have the ability to generate a highly vascularized and a conjunctive rich living tissue. This one is able to colonize the available pulp space. Revascularization is a new treatment method for immature necrotic permanent teeth. Up to now, apexification procedures were applied for these teeth, using calcium dihydroxide or MTA to produce an artificial apical barrier. However, the pulp revascularization allows the stimulation of the apical development and the root maturation of immature teeth. Two pulp revascularization techniques are used in the literature, one using calcium dihydroxide and the second using a triple antibiotic paste. Based on these two different pulp revascularization protocols, which obtain the desired therapeutic success, the literature will be reviewed and analyzed according to the relevance of their choice of materials. Based on the literature, we propose a new relevant protocol and a new mixture of antibiotics.

scholarly journals Gold Extraction from Cyanidation Tailing Using Microwave Chlorination Roasting Method

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1025 ◽  
Author(s):  
Fei Zhu ◽  
Libo Zhang ◽  
Haoyu Li ◽  
Shaohua Yin ◽  
Sivasankar Koppala ◽  
...  
Keyword(s):  
Microwave Field ◽  
High Efficiency ◽  
Chloride Concentration ◽  
Treatment Method ◽  
Gold Extraction ◽  
Microwave Roasting ◽  
Gold Mines ◽  
Chlorination Roasting ◽  
New Treatment ◽  
Gold Industry

At present, gold mines are increasingly scarce in the world. The yield of cyanidation tailing (CT) of refractory gold ores with a grade of 10 g/T is huge; however, the effective capitalization of the cyanidation tailing is a significant problem in the gold industry. In this work, a new treatment method, a microwave-roasting process developed. The effect of roasting temperature, calcium chloride concentration, holding time and mineral size on the recovery of Au researched under conventional and microwave conditions. It found that, under the same processing conditions, the Au recovery in the microwave field is much higher than that of conventional conditions. The preliminary reinforcing role of the microwave discussed in the recovery of gold. This might be because of the microwave absorption ability of CaCl2 is much better, heated quickly and the reactions intensified among CaCl2, O2, and H2O. As a result, the extraction of gold in CT drastically increased in the microwave field, and the microwave roasting technology shows the characteristics of environmental protection in terms of low energy consumption and high efficiency.

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