http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Matam Chandrasekharaiah ),( Appoothy Thulasi ),( M Bagath ),( Duvvuri Prasanna Kumar ),( Sunil Singh Santosh ),( Chenniappan Palanivel ),( Vazhakkala Lyju Jose ),( K. T. Sampath ) 생화학분자생물학회(구 한국생화학분자생물학회) 2011 BMB Reports Vol.44 No.1
Termites play an important role in the degradation of dead plant materials and have acquired endogenous and symbiotic cellulose digestion capabilities. The feruloyl esterase enzyme (FAE) gene amplified from the metagenomic DNA of Coptotermes formosanus gut was cloned in the TA cloning vector and subcloned into a pET32a expression vector. The Ft3-7 gene has 84% sequence identity with Clostridium saccharolyticum and shows amino acid sequence identity with predicted xylanase/chitin deacetylase and endo-1,4-beta-xylanase. The sequence analysis reveals that probably Ft3-7 could be a new gene and that its molecular mass was 18.5 kDa. The activity of the recombinant enzyme (Ft3-7) produced in Escherichia coli (E.coli) was 21.4 U with substrate ethyl ferulate and its specific activity was 24.6 U/mg protein. The optimum pH and temperature for enzyme activity were 7.0 and 37oC, respectively. The substrate utilization preferences and sequence similarity of the Ft3-7 place it in the type-D sub-class of FAE. [BMB reports 2011; 44(1): 52-57]
Effect of hybrid ceramic addition on Al7075 for prompt utilization
P. Sathiamurthi,K.S. Karthi Vinith,A. Sivakumar,N. Bagath Singh 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.3
In recent engineering applications, lightweight aluminium composites are becoming more popular as an alternative for ferrousmetals. The high cost of component manufacture has kept particulate metal matrix composites from being widely used inengineering applications. The goal of this research is to characterize stir cast Al-7075/B4C/Si3N4 reinforced hybrid composites. Hard ceramic reinforcements increase the microstructure, mechanical, and wear qualities of the material. B4C and ZrB2particles were incorporated into the Al matrix at different weight percents, such as 2, 4, 6, and 8. The microstructure, andproperties of mechanical as well as wear of ZrB2 and B4C particle composition were examined. In addition, SEM and XRDwere used to investigate the castings' morphology. As a result, hardness and strength rise as the amount of B4C-ZrB2 in thecomposite increases. The Al7075 + 8% B4C + 1% ZrB2 composite outperform all the considered composition. Furthermore,with increasing sliding distances, the specific wear rate increases and the coefficient of friction decreases. Because of itsoutstanding mechanical and wear properties, the hybrid Al7075-B4C-ZrB2 material is the excellent choice of upper wingrequirements.