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- 저자 : Aman, Nurul Ashikin Mohd Nazrul (검색결과 203 건)
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Aman Dekebo,Sunil Aryal,Chuleui Jung 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
The potato tuber moth (PTM) is an oligophagous insect pest on solanaceous crops. Potato tuber is regarded as the main host of PTM but it can also feed, develop and reproduce on other solanaceous crops such as tomato. We tested adult olfactory behavior and larval development on 5 cultivated tomato varieties namely Money maker, Campari, Ailsa craig, LA 3475 (M82) and E-6203, and one wild species, S. pimpinellifolium. Tomato leaf hydro-distilled oils of Money maker, Campari, Ailsa craig, S. pimpinellifolium and E-6203 leaves showed strong attractiveness for mated adult PTM of both sexes (> 70%) in two-armed bioassay. LA 3475 (M82) oil showed repulsive response (83.7% for males and 87.3% for females). GC-MS analysis of the hydro-distilled oils of all tomato leaves contain the fatty acid n-hexadecanoic acid (Palmitic acid) as a major compound with relative percentage as S. pimpinelifollium (32.1%) > E-6203 (26.5%) > money maker (26.1%) > LA-3475 (16.3%) > Campari (15.0%) > Ailsa craig (10.4%). LA 3475 consists of (1-hexyltetraecyl)cyclohexane (10.5%) as the second major compound which was absent in all other tomato varieties. In no choice test, PTM larvae showed highest developmental performances such as number of mines, headcapsule size, pupal weight and survival in Ailsa craig, and lowest in LA 3475. In choice test, similar results were observed. This study indicates the leaf volatile of n-hexadecanoic acid might be responsible for PTM attractiveness and (1-hexyltetraecyl)cyclohexane for repulsiveness. And varieties of tomato leaves could support suitable nutritional contents to PTM, posing pest potential in the future where higher exposure is expected.
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Aman Yaman, M.,Kita, K.,Pinontoan, R.,Okumura, J. Asian Australasian Association of Animal Productio 1998 Animal Bioscience Vol.11 No.5
The influence of refeeding with either vitamin, mineral, fibre of water on protein synthesis and mRNA content in the liver and breast muscle of fasted chicks was investigated. At 15 d of age, chicks were fasted for 2 d and then refed either vitamin, mineral, fibre or water. The fractional synthesis rate (FSR) of protein was measured after 30 min of refeeding by using a large dose injection of L - 2, $6[^3H]$ phenylalanine. In the liver, FSR was reduced by fasting and tended to increase but not significantly by refeeding with vitamin or mineral. FSR was not affected by refeeding with fibre or water. There was no influence of fasting and refeeding on ribosomal capacity (the RNA : protein ratio) and ribosomal efficiency (total protein synthesised per total RNA). The absolute synthesis rate (ASR) of liver protein and hepatic mRNA content were reduced by fasting and unchanged by refeeding. In the muscle, FSR, ASR and mRNA content were significantly decreased by fasting and not recovered by refeeding with either vitamin, mineral, fibre or water. It concluded that vitamin, mineral, fibre and water have little capacity to stimulate liver and muscle protein synthesis reduced by fasting.
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Aman, Berthold Albert,Levy, Elvira Ingrid,Hofman, Benjamine,Vandenplas, Yvan,Huysentruyt, Koen The Korean Society of Pediatric Gastroenterology 2021 Pediatric gastroenterology, hepatology & nutrition Vol.24 No.1
Purpose: Digital communication is becoming increasingly important in clinical practice and research. The finding that stool consistency can be evaluated similarly using either "in vivo" or photographic material by health care professionals will decrease subjective interpretation by parents. The primary outcome of this study was the reliability of stool consistency scoring using the Brussels Infant and Toddler Stool Scale (BITSS) between fresh stools and their photos; the secondary outcome was the inter-rater reliability based on the fresh stools. Methods: Fresh stool samples from healthy children were collected in a day care center. These stools, and one month later the corresponding photos presented in a random order, were presented to 14 observers. Reliabilities were analyzed using absolute agreements and weighted and unweighted Cohen's κ. Results: In total, 202 samples were rated 576 times. Absolute agreement between photographic and real time assessment ranged between 71.1% and 83.3% among observers. This corresponded with substantial agreement (unweighted κ=0.70 [95% CI, 0.61-0.78]; weighted κ=0.86 [95% CI, 0.78-0.88]). The inter-observer agreement showed similar percentages of absolute agreement (81.4-82.0%) and κ-values corresponding with fair-to-moderate agreement. Conclusion: Our findings suggest that the assessment of fresh stool consistency can also reliably be done on photographic material when using the BITSS. This opens opportunities in scientific surroundings and in our daily life communication with parents and caretakers.
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Aman, Nurul Ashikin Mohd Nazrul,Muchtar, Andanastuti,Rosli, Masli Irwan,Baharuddin, Nurul Akidah,Somalu, Mahendra Rao,Kalib, Noor Shieela The Korean Electrochemical Society 2020 Journal of electrochemical science and technology Vol.11 No.2
Solid oxide fuel cells (SOFCs) are among one of the promising technologies for efficient and clean energy. SOFCs offer several advantages over other types of fuel cells under relatively high temperatures (600℃ to 800℃). However, the thermal behavior of SOFC stacks at high operating temperatures is a serious issue in SOFC development because it can be associated with detrimental thermal stresses on the life span of the stacks. The thermal behavior of SOFC stacks can be influenced by operating or material properties. Therefore, this work aims to investigate the effects of the thermal conductivity of each component (anode, cathode, and electrolyte) on the thermal behavior of samarium-doped ceria-based SOFCs at intermediate temperatures. Computational fluid dynamics is used to simulate SOFC operation at 600℃. The temperature distributions and gradients of a single cell at 0.7 V under different thermal conductivity values are analyzed and discussed to determine their relationship. Simulations reveal that the influence of thermal conductivity is more remarkable for the anode and electrolyte than for the cathode. Increasing the thermal conductivity of the anode by 50% results in a 23% drop in the maximum thermal gradients. The results for the electrolyte are subtle, with a ~67% reduction in thermal conductivity that only results in an 8% reduction in the maximum temperature gradient. The effect of thermal conductivity on temperature gradient is important because it can be used to predict thermal stress generation.
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Insect fatty acids: A comparison of lipids from three Orthopterans and Tenebrio molitor L. larvae
Aman Paul,Michel Frederich,Rudy Caparros Megido,Taofic Alabi,PriyankaMalik,Roel Uyttenbroeck,Frederic Francis,Christophe Blecker,Eric Haubruge,Georges Lognay,Sabine Danthine 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.2
In order to explore some potential insect sources of food lipids, the lipid compositions of three Orthopterans (Acheta domesticus, Conocephalus discolor and Chorthippus parallelus) were analyzed and compared with those of Tenebrio molitor larvae. A. domesticus, Co. discolor, Ch. parallelus and T. molitor larvae were found to contain approximately 15%, 13%, 10% and 32% lipids on dryweight, respectively. The lipids fromthree Orthopterans contain much higheramounts of essential fatty acids than those of T.molitor larvae. The twoOrthopterans of the suborder Ensifera i.e., A. domesticus and Co. discolor contain linoleic acid inmajor quantities,while Ch. parallelus of the suborder Caelifera, contain α-linolenic acid in major quantities. The consumption of linoleic and α-linolenic fatty acid is linked with numerous health promoting effects. The factors that contribute to differences in fatty acid profiles of these insects are being discussed. At last the nutritional parameters including polyunsaturated to saturated and omega 6 to omega 3 fatty acid ratios of these insect lipids are also being discussed to understand the potential role of these lipids in human nutrition.
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Aman Dekebo,KesatebrhanHaile,Sunil Aryal,Hong Seokmin,Chuleui Jung 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The potato tuber moth, Phthorimaea operculella (Zeller), is a ubiquitous pest on potatoes, tobacco, tomato and othercrops. The small hive beetle (SHB), Aethina tumida Murray, is a pest of European honeybees (Apis mellifera L.) in severalcountries in the world. Propolis is a balm-like substance collected from plants by bees. Its chemical composition variesand depends mainly on the flora in the region in which it is collected as well as the bee species. Hitherto biologicalproperties and the chemical composition of the essential oil extracted from propolis of Korean origin are unknown. Inthis study, while searching for an environmentally friendly method to control these pests we evaluated the repellent effectsof essential oil of propolis collected from Bee Lab of Andong National University and found that it possess repellentactivity against both small hive beetle and potato tuber moth. Moreover, a total of 171 constituents of the oil were identifiedof which 6 were major compounds using GC/MS analysis. We also compared the chemical composition of this oil withthose from 2 Ethiopian regions.
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Aman Kumar,Barinderpal Singh 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.4
Mobile ad-hoc networks (MANET) they can be deploy simply in a few environment without any determination. A major point that affectssuch a networks that characterize by dynamic change in topologyis the performance where routing worth forcefulperformance is one of the key challenges in deploying MANET. Black hole attacks node false advertises that they have secured path source to destination. In this paper the performance of proactive routing protocols Destination-Sequenced Distance Vector (DSDV) and Improved Destination-Sequenced Distance Vector (I-DSDV) evaluated under Ipv6 environment using black hole attack under different performance metrics Packet delivery Fraction (PDF), Delay, Routing Overhead (RO). The study in MANET is done with network simulator version 2 simulator.
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Reengineering Techniques for Object Oriented Legacy Systems
Aman Jatain,Deepti Gaur 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.1
Today’s software development is defined by continuous evolution of software products. These products are regularly updated during their usage. In most of the cases systems grow inevitably by adding new features or by changing the system architecture due to new technologies or business plans. It is more than a decade; objects oriented paradigm is adopted as the most efficient passage to build flexible software, and promptly supported by industry. Though, the benefits of object oriented paradigm are supported by many, but its usage does not necessarily result in general, adaptable systems. These huge systems are often suffering from improper use of object oriented techniques, like inheritance and the lack of object oriented methods being regulated towards the building of families of systems instead of developing single applications. These growing technologies make the systems more difficult to maintain and improve. So, there is growing demand for reengineering of object-based systems. The main intention of this paper is to discover important research directions in the area of reengineering of object oriented legacy systems, which necessitate further attention in order to build more effective and efficient reengineering technique for these systems. The paper first discusses the state of art in reengineering of legacy system and its need. Paper also discuss the benefits of component based system over object oriented system and later outlines the techniques for reengineering of object oriented legacy system. In this paper we presented statistical analysis based on more than a decade data.
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