scholarly journals Application of cryogenic blasting as a modern method of cleaning molds for steel casting

2021 ◽  
Vol 29 (4) ◽  
pp. 85-91
Author(s):  
О.S. Vodennikova ◽  
◽  
S.А. Vodennikov ◽  
Ye.А. Manidina ◽  
◽  
...  
Keyword(s):  
Author(s):  
A.B. Movsisyan ◽  
◽  
A.V. Kuroyedov ◽  
G.A. Ostapenko ◽  
S.V. Podvigin ◽  
...  

Актуальность. Определяется увеличением заболеваемости глаукомой во всем мире как одной из основных причин снижения зрения и поздней постановкой диагноза при имеющихся выраженных изменений со стороны органа зрения. Цель. Повысить эффективность диагностики глаукомы на основании оценки диска зрительного нерва и перипапиллярной сетчатки нейросетью и искусственным интеллектом. Материал и методы. Для обучения нейронной сети были выделены четыре диагноза: первый – «норма», второй – начальная глаукома, третий – развитая стадия глаукомы, четвертый – глаукома далеко зашедшей стадии. Классификация производилась на основе снимков глазного дна: область диска зрительного нерва и перипапиллярной сетчатки. В результате классификации входные данные разбивались на два класса «норма» и «глаукома». Для целей обучения и оценки качества обучения, множество данных было разбито на два подмножества: тренировочное и тестовое. В тренировочное подмножество были включены 8193 снимка с глаукомными изменениями диска зрительного нерва и «норма» (пациенты без глаукомы). Стадии заболевания были верифицированы согласно действующей классификации первичной открытоугольной глаукомы 3 (тремя) экспертами со стажем работы от 5 до 25 лет. В тестовое подмножество были включены 407 снимков, из них 199 – «норма», 208 – с начальной, развитой и далекозашедшей стадиями глаукомы. Для решения задачи классификации на «норма»/«глаукома» была выбрана архитектура нейронной сети, состоящая из пяти сверточных слоев. Результаты. Чувствительность тестирования дисков зрительных нервов с помощью нейронной сети составила 0,91, специфичность – 0,93. Анализ полученных результатов работы показал эффективность разработанной нейронной сети и ее преимущество перед имеющимися методами диагностики глаукомы. Выводы. Использование нейросетей и искусственного интеллекта является современным, эффективным и перспективным методом диагностики глаукомы.


Alloy Digest ◽  
2011 ◽  
Vol 60 (12) ◽  

Abstract Kubota Alloy HD (UNS J93005) is a heat-resisting stainless steel casting alloy suitable for long-term service at temperatures up to 1095 deg C (2000 deg F). The nearest wrought equivalent is type 327. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on corrosion resistance as well as casting and joining. Filing Code: SS-1110. Producer or source: Kubota Metal Corporation, Fahramet Division.


Alloy Digest ◽  
2006 ◽  
Vol 55 (11) ◽  

Abstract Kubota alloy HH II is a heat-resistant fully austenitic stainless steel casting for multiple furnace parts. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as casting and joining. Filing Code: SS-980. Producer or source: Kubota Metal Corporation, Fahramet Division.


Alloy Digest ◽  
2010 ◽  
Vol 59 (5) ◽  

Abstract Kubota Alloy HC is a heat resisting stainless steel casting suitable for long term service at temperatures up to 1093 deg C (2000 deg F). This alloy can maintain resistance to sulfur bearing environments up to 1093 deg C (2000 deg F). This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as casting and joining. Filing Code: SS-1065. Producer or source: Kubota Metal Corporation, Fahramet Division.


Alloy Digest ◽  
1982 ◽  
Vol 31 (6) ◽  

Abstract Type HN is an iron-chromium-nickel alloy containing sufficient chromium for good high-temperature corrosion resistance and with nickel content in excess of the chromium. This alloy has properties somewhat similar to the more widely used ACI Type HT alloy but with better ductility. Type HN is used for highly stressed components in the 1800-2000 F temperature range. It is used in the aircraft, automotive, petroleum, petrochemical and power industries for a wide range of components and parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-410. Producer or source: Various stainless steel casting companies.


Author(s):  
A. U. Zamurayeva ◽  
Е. T. Supiyeva ◽  
B Sh. Orynbayeva

Relevance. The modern method of infiltration provides an opportunity to stop the spread of pathogenic bacteria and the development of caries at the white spot stage, replacing the destroyed enamel cells with special polymers having low viscosity and high penetrating ability. The stabilization of the process is achieved in a short time with the maximum safety of their tissues. Purpose. Treatment of initial tooth decay in children by infiltration, assessment of the effectiveness and advantages of modern technology. Materials and methods. Clinical examination was carried out according to generally accepted methods. Additionally, a laser diagnostic method was used using the KaVo DIAGNOdent device (Germany). The LLP Dentistry Center «Zhaik Dent» and the LLP «Concept» used the Icon system for the treatment of initial caries and after orthodontic treatment for 25 children with 54 teeth. Results. At the end of tooth treatment with the Icon infiltration method, parents and the child were given recommendations: from the next day, brush your teeth 2 times a day, rinse your mouth regularly after eating, do not drink drinks, products with coloring substances. To monitor the result of treatment, the child was prescribed for reexamination after 7-10 days, after one month, in the following periods – once a year.After working with the material of the Icon system, the authors noted the pronounced effects of the treatment of initial caries by the method of infiltration.Conclusions. 1. The method of infiltration is a modern and promising technology for the treatment of dental caries at an early stage without losing healthy tissues. 2. The Icon infiltration method makes it possible to stop the spread of pathogenic bacteria and develop tooth decay at the white spot stage, replacing the destroyed enamel cells with special polymers having low viscosity and high penetrating ability. 3. The stabilization of the carious process is achieved in a short time with the maximum preservation of the tooth's tissues. 


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