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Deuteromethylactin B from a Freshwater-derived Streptomyces sp.
Anam F. Shaikh,Maryam Elfeki,Samantha Landolfa,Urszula Tanouye,Stefan J.Green,Brian T. Murphy 한국생약학회 2015 Natural Product Sciences Vol.21 No.4
Compared to their terrestrial and marine counterparts, little is known about the capacity of freshwater-derived actinomycete bacteria to produce novel secondary metabolites. In the current study, we highlight the disparities that exist between cultivation-independent and -dependent analyses of actinomycete communities from four locations in Lake Michigan sediment. Furthermore, through phylogenetic analysis of strains isolated from these locations, we identified a Streptomyces sp., strain B025, as being distinct from other Streptomyces spp. isolated from sediment. Upon fermentation this strain produced a rare class of eight-membered lactone secondary metabolites, which have been for their antitumor properties. We used spectroscopic and chemical derivitization techniques to characterize octalactin B (1) in addition to its corresponding novel, unnatural degradation product (2).
Penicillium menonorum: A Novel Fungus to Promote Growth and Nutrient Management in Cucumber Plants
( Anam Giridhar Babu ),( Sang Woo Kim ),( Dil Raj Yadav ),( Umyong Hyum ),( Mahesh Adhikari ),( Youn Su Lee ) 한국균학회 2015 韓國菌學會誌 Vol.43 No.1
The present study is the first report on the isolation of Penicillium menonorum from rhizosphere soil in Korea and its identification based on morphological characteristics and internal transcribed spacer gene sequence. The fungal isolate was named KNU-3 and was found to exhibit plant growth-promoting (PGP) activity through indole acetic acid (IAA) and siderophore production, as well as P solubilization. KNU-3 produced 9.7 mg/L IAA and solubilized 408 mg of Ca3PO4/L, and inoculation with the isolate significantly (p < 0.05) increased the dry biomass of cucumber roots (57%) and shoots (52%). Chlorophyll, starch, protein, and P contents were increased by 16%, 45%, 22%, and 14%, respectively, compared to plants grown in uninoculated soil. The fungus also increased soil dehydrogenase (30%) and acid phosphatase (19%) activities. These results demonstrate that the isolate KNU-3 has potential PGP attributes, and therefore it can be considered as a new fungus to enhance soil fertility and promote plant growth. Moreover, the discovery of PGP ability and traits of this fungus will open new aspects of research and investigations. In this study, plant growth promotion by P. menonorum KNU-3 is reported for the first time in Korea after its original description.
Research Note : A New Record of Volutella ciliata Isolated from Crop Field Soil in Korea
( Anam Giridhar Babu ),( Sang Woo Kim ),( Dil Raj Yadav ),( Mahesh Adhikari ),( Changmu Kim ),( Hyang Burm Lee ),( Youn Su Lee ) 한국균학회 2015 韓國菌學會誌 Vol.43 No.1
During a survey of fungal species in South Korea, a species of Volutella ciliata was isolated and described based on the analysis of the internal transcribed spacer region of its rDNA and its morphological characteristics. This is the first record of Volutella ciliata isolated from crop field soil in Korea.
PROTECTION , TERMS OF TECHNOLOGY TRANSFER AND FOREIGN INVESTMENT : A WELFARE ANALYSIS
ANAM, MAHMUDUL,SUPAPOL, ATIPOL BHANICH 한국국제경제학회 1992 International Economic Journal Vol.6 No.4
This paper demonstrates that the welfare of the technology-recipient country can be lower when superior foreign technology is transferred at a more favourable term to a protected sector. It is shown that a decrease in the price of the imported technology increases the output of the protected good. The source of the welfare paradox is therefore this aggravation of production distortion created by the cheaper foreign technology. Furthermore, when the protected good is capital intensive, capital rents are shown to be negatively correlated with the price of foreign technology. Thus, the presence of foreign capital makes the welfare paradox more likely.
Anam Ali Memon,Mazhar H. Peerzada,Iftikhar Ali Sahito,Sadaf Abbassi,정성훈 한국의류학회 2018 Fashion and Textiles Vol.5 No.1
Composite materials offer a number of distinct advantages in a wide range of low and high technology engineering applications. Considering the fact, in this study, a facile fabrication method of highly cut resistant composite fabrics using Kevlar and polyethylene is reported. 100% Kevlar, 100% Polyethylene and 50% Kevlar/50% Polyethylene composite fabrics are fabricated by weaving and knitting techniques. These fabrics were tested for cut index, abrasion, and puncture resistance for comparative exploration. Owing to higher mechanical strength and greater number of interlacements; the woven fabrics demonstrated twice cut resistance in contrast to knitted fabrics. The surface morphology of deformed samples investigated by Scanning Electron Microscopy (SEM) also proved that the woven fabrics of all types offered much resistance towards cutting than the knitted fabrics. Moreover, it is found that greater thickness of fabrics leads to intensification of the cut resistance. Furthermore, the effect of fiber type on cut resistant property of the fabrics was also measured and it was found that the composite fabric exhibited double cut resistance than 100% Kevlar and 100% Polyethylene fabrics. The 50% Kevlar/50% Polyethylene composite woven fabric resisted up to 35 consecutive strokes of sharp steel cutter whereas the knitted fabric completely torn apart at 20 strokes only. Thus, the as synthesized 50% Kevlar/50% Polyethylene composite woven fabric exhibiting superior cut resistance property offer a judicious choice for the preparation of efficient cut resistant fabric for industrial and domestic applications.
IMMISERISING FACTOR GROWTH AND THE NON-EQUIVALENCE OF QUOTAS AND VERs
ANAM, MAHMUDUL,ZANDI, FARROKH R. 한국국제경제학회 1989 International Economic Journal Vol.3 No.3
In this paper we demonstrate that the phenomenon of a negative shadow price can occur in the context of a small open economy, if the quantitative restriction on imports is in the form of a foreign voluntary export restraint (VER) rather than a domestic import quota. Then reason for this asymmetrical result is that an immiserising "terms of trade" effect is possible in the case of a VER but not under a domestic import quota, since in the former quota rents accrue to foreigners but in the latter become part of domestic income.
Confirmation of genotypic effects for the bovine APM1 gene on marbling in Hanwoo cattle
( Anam Kwon ),( Krishnamoorthy Srikanth ),( Eunjin Lee ),( Seonkwan Kim ),( Hoyoung Chung ) 한국동물자원과학회(구 한국축산학회) 2016 한국축산학회지 Vol.58 No.4
Background: Our previous study had identified the SNP (g.81966377T > C) and indel (g.81966364D > I) located in the promoter of APM1 to have a significant effect on marbling in Hanwoo. APM1 encodes an adipocytokine called adiponectin, which plays a significant role in lipogenesis. The aim of this study was to verify and validate the effect of the SNP and indel on marbling and other carcass traits in a large, representative, countrywide population of Hanwoo cattle. The carcass traits measured were marbling (MAR), backfat thickness (BFT), loin eye area (LEA), and carcass weight (CAW). Results: Primers were designed to amplify 346 bp of the genomic segment that contained the targeted SNP (g.81966377) and the indel (g.81966364). After data curation, the genotypes of 8,378 individuals identified using direct sequencing analysis estimated frequencies for C (0.686) and T (0.314) respectively showing genotype frequencies for CC (0.470), CT (0.430) and TT (0.098). The genotypes were significantly associated with MAR, BFT and LEA. The indel had significant effect on marbling (P < .0001) with strong additive genetic effects. The allele frequencies was estimated at (DEL, 0.864) and insertion (INS, 0.136) presenting genotypes of D/D (75.63 %), D/I (21.44 %), and I/I (2.92 %). Significant departure from Hardy-Weinberg equilibrium was not detected for both the SNP and the indel. Conclusion: The SNP genotypes showed significant association with MAR, BFT and LEA with strong additive genetic effects, while the indel was significantly associated with MAR. The results confirmed that the variants can be used as a genetic marker for improving marbling in Hanwoo.