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Erinç Uludamar,Mustafa Taş,Sami Gökberk Biçer,Cihan Yıldırım,Ebru Aykut Yıldırım,Kerimcan Çelebi 한국자동차공학회 2020 International journal of automotive technology Vol.21 No.2
The connection surfaces of drag-link must be tough and safe enough to carry transmitted forces that exert on the product in service conditions. Therefore, undulated forming takes place in machining process to stay the rod-ends in the rod. In the rod-end, after forming process, a straight part which remains on the body causes extra cost and weight on the product. In this study, the result of shortening of rod-end which was produced from C45+N quality steel was investigated by comparing with the unmodified rod-end. The comparison was carried out by fatigue test and Finite Element Analysis. The results showed that the cropped part has almost no effect on the durability of the product. It is measured that the modification result with 0,082 kg weight reduction on each rod-end and 5 seconds shortening of machining process were observed by the modification on rod-end. The effect of modification on the part was examined in a case study. The case study indicated that annual expenses of raw material lowered by $9.124,56 and total cost decreased by $11.480,20.
Ekra Jean-Yves,N’Goran Edouard K.,Mboera Leonard E.G.,Gragnon Biégo Guillaume,Assovié Koco Rita Nadège,Mafie Eliakunda Michael 대한기생충학ㆍ열대의학회 2023 The Korean Journal of Parasitology Vol.61 No.2
Bovine trypanosomiasis is a significant health concern for livestock intensification in Côte d’Ivoire. This study aimed to determine the prevalence and distribution of pathogenic trypanosomes and identify the most infected cattle breed in northern Côte d'Ivoire. We examined 700 cattle and found that polymerase chain reaction (PCR) was more sensitive (12.3%) than microscopic observation (5.6%). Among the trypanosome species detected in naturally infected cattle, Trypanosoma vivax was 7.3%, Trypanosoma simiae tsavo was 6.7%, and Trypanosoma congolense was 0.4%. The overall prevalence of trypanosome infection in all cattle breeds was 12.3%, while the prevalence in individual breeds was 14.8%, 7.3%, 10.6%, and 12.3% for N’Dama, Baoule, Zebu, and Mere breed, respectively. The infected animals had low packed cell volume, influencing the prevalence. Our findings indicate that bovine trypanosomes are prevalent in Côte d’Ivoire, and their prevalence varies by region and breed. These pathogens include T. vivax, T. simiae tsavo, and T. congolense.
Zyoud, A.,Dwikat, M.,Al-Shakhshir, S.,Ateeq, S.,Shteiwi, J.,Zu'bi, A.,Helal, M.H.S.,Campet, G.,Park, D.,Kwon, H.,Kim, T.W.,Kharoof, M.,Shawahna, R.,Hilal, H.S. Elsevier Sequoia 2016 Journal of photochemistry and photobiology Chemist Vol.328 No.-
<P>This communication describes for the first time how nano-size particles, sensitized with natural dye molecules of anthocyanin, can be used as catalysts in photo-degradation of gram negative Escherichia coli bacteria in water. The naked ZnO nano-particles degraded up to 83% of the bacteria under solar simulator light, while the dye-sensitized particles increased the bacterial loss by similar to 10%. Solar simulator light includes about 5% of UV tail (shorter than 400 nm) which means that both UV and visible light (longer than 400 nm) radiations could be involved. When a cut-off filter was used, the naked ZnO caused only 40% bacterial loss, in accordance with earlier literature that described killing of bacteria with ZnO particles both in the dark and under light. With the cut-off filter, the sensitized ZnO particles caused higher than 90% bacterial loss, which confirms sensitization of the ZnO particles to visible light. Moreover, the results show that the catalyzed photo-degradation process causes mineralization of the bacteria and their organic internal components which leach out by killing. The catalyst can be recovered and reused losing similar to 10% of its activity each time due to mineralization of the dye molecules. However, catalyst activity can be totally regained by re-sensitizing it with the anthocyanin dye. The effects of different experimental conditions, such as reaction temperature, pH, bacterial concentration and catalyst amount together with nutrient broth and saline media, will be discussed together with the role of the sensitizer. (C) 2016 Elsevier B.V. All rights reserved.</P>