Pengukuran Kesilindrisan Hasil Proses Pemotongan Mesin Bubut untuk Mengetahui Kemampuan Mesin Menghasilkan suatu Produk

The ability of machine tools to produce a product of good quality is needed by the industrial industry that exists today. Industrial industries that use machine tools are not only industries that produce products in the form of a tool or machine, machine tools are also widely used by industries or institutions that serve machine repair and providers of skills training. The quality of the machine measured using the geometry of the workpiece resulting from the machining process can be in the form of roundness, cylindrecity, tapers and other geometric shapes. The use of machine tools that continue for several years can result in a decrease in the ability of the machine to produce a product. The use of a long horizontal doall lt13 lathe will produce a form of workpiece cylindricity that is not the same as the condition of the the new machine tools, therefore testing activities are carried out by cutting the machine and seeing what the cylindrical value of the specimen is capable of achieving . From the results of the testing that has been carried out on a horizontal lathe as many as eight units, the values of cylindrical difference are different for each machine. The highest value of cylindricity is produced by lathes with machine number 8 and the smallest cylindrical value produced by lathes with machine number 3. The greatest tolerance is achieved in the quality of IT (International tolerance) 11 tolerance and the lowest is achieved in IT tolerance quality 10

Tinjauan Performansi Bubut Doll LT13 terhadap Penyimpangan Kebulatan Benda Kerja

The industry manufacture with high quality and able to pruduce the workpicece with high quality In industry manufacture are very necessary. The use of high quality machines should be supported by the ability to operate and the ability to perform maintenance, this ability is useful to maintain the condition of the machine in order to produce good quality workpieces. Politeknik Manufaktur Negeri Bangka Belitung has several high quality machine tools, one type of machine tools usually use is lathe machine doall LT13 with total have six units. this machine Used to support education and to produce spare parts. Doall LT13 lathes have been used for 22 years, during that period there may be deviation of machine geometry, deviations that occur can lead to decreased quality of the resulting workpiece. This study aims to determine the feasibility of the machine by measuring the roundness of the spicemen of the process of turning, the roundness of the specimen is analyzed by using the minimum circle method. From the roundness testing performed on the doall lt 13 the result� that can be achieved as follows 0,082 mm at lathe number 8, 0,073 mm at lathe number 5, 0,057 mm at lathe number 7, 0,051 mm at lathe� number 2, 0,048 mm at lathe number 6 and 0,046 mm at lathe number 3

Mekanisasi Pencetak Kue Kacang

Peanut cake is one of the typical Indonesian pastries which includes the most popular cakes by Indonesian people including the people of the Province of Bangka Belitung Islands. The process of processing peanut cakes through several stages, namely the processing of peanuts, the printing of bean cake dough. The current method of printing peanut cakes is still manually using one by one as a tool to print the bean cake. The purpose of this study is to design and make a bean cake printing tool that is capable of printing 20 bean cakes in one process. The stages in making this bean cake printing device start from problem identification, planning, designing, tool making, assembling, and testing. Based on the results of the trials that have been carried out, the tool is capable of printing 20 prints in a single process and the dough is not attached to the mold

Роль международной мобильности ученых на разных этапах истории науки Украины

В статье освещается эволюция международного сотрудничества ученых Украины с зарубежными исследователями. Продемонстрировано огромное влияние стажировки отечественных ученых в крупнейших научных центрах мира, совместных исследований с зарубежными исследователями для становления науки в Украине, развития сети научных учреждений и высших учебных заведений. Охарактеризовано основные тенденции международного сотрудничества ученых Национальной академии наук и миграции научных работников в последние десятилетия.У статті висвітлюється еволюція міжнародного співробітництва вчених України з зарубіжними дослідниками. Продемонстровано величезний вплив стажування вітчизняних учених у найбільших наукових центрах світу, спільних досліджень із зарубіжними дослідниками для становлення науки в Україні, розвитку мережі наукових установ та вищих навчальних закладів. Охарактеризовано основні тенденції міжнародної співпраці вчених Національної академії наук України та міграції наукових працівників в останні десятиліття.Evolution of the international cooperation of Ukrainian scientists with foreign researchers is emphasized. The great impact from probation of national scientists at largest research centers across the globe, joint research with foreign partners on establishing the science system in Ukraine and building up the network of research institutions and higher education establishments is shown. Main tendencies in the international cooperation of scientists from the National Academy of Sciences of Ukraine and scientists’ migration in the latest decades

Hepatitis E virus RNA in commercially available porcine livers in The Netherlands

Hepatitis E virus (HEV) infections caused by genotype 3 are increasingly observed in industrialized countries, without a distinct source. High similarity between human and swine strains of HEV strongly suggest possible zoonotic transmission. It was reported previously that in 55% of Dutch pig farms HEV-excreting fattening pigs were present. In the current study, presence of HEV RNA in commercially available porcine livers was shown. We examined 62 commercially available porcine livers for HEV contamination. Before examination of livers, the most sensitive combination of tissue disruption and RNA-extraction was chosen from four disruption and seven RNA-extraction methods. Four of 62 livers were shown to be positive for HEV RNA by RT-PCR and Southern blot hybridization, and three sequences were obtained. Phylogenetic analysis showed clustering of the sequences with previously published Dutch HEV genotype 3 sequences from humans and swine. To study infectivity of possible virus, three pigs were intravenously inoculated with suspensions from commercially available HEV positive livers. Two other pigs served as high-dose or low-dose controls. The low-dose control received a comparable viral count as animals receiving inocula from commercially available livers, the high dose control received a viral count that was known to generate infection. Faecal shedding of HEV was observed in the high-dose control, indicating that the control virus was infectious. No faecal shedding of HEV was observed for the low-dose control and the three pigs that were administered the commercially available livers extracts. In conclusion, HEV RNA was found in commercially available porcine livers. inoculation of susceptible pigs with extracts from HEV-positive livers did not lead to infection, but this may be a dose-dependent effect. The risk for consumers should be investigated further

Некоторые патофизиологические аспекты хирургического лечения гнойно−деструктивных поражений кишечника

Проанализированы принципы хирургического лечения больных с гнойно−деструктивными поражениями кишечника. Сделан вывод, что обязательным элементом такого лечения при любом варианте заболевания является полное и стабильное восстановление кишечного пассажа, причем сроки восстановления должны быть опережающими в отношении нарастающих расстройств гомеостаза и дегенеративных нарушений в выключенных отделах кишечного тракта.The author analyzes the principles of treatment of patients with purulent destructive lesions of the intestine. It is concluded that the obligatory element of this treatment in any type of the disease is complete and stable restoration of the intestine passage. The terms of restoration should forestall the increasing homeostasis disorders and degenerative changes in the excluded portions of the intestinal tract