http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
M. Srinivasan,P. Karuppasamy,P. Ramasamy,A. K. Barua 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.4
Numerical modelling has emerged as a powerful tool for the development andoptimization of directional solidification process for mass production of multicrystallinesilicon. A transient global heat transfer model is performed to investigate theeffect of bottom grooved furnace upon the directional solidification (DS) process ofmulti-crystalline silicon (mc-Si). The temperature distribution, von Mises stress,residual stress and dislocation density rate in multi-crystalline silicon ingots grown bymodified directional solidification method have been investigated for five growth stagesusing finite volume method at the critical Prandtl number, Pr = 0.01. This paperdiscusses bottom groove furnace instead of seed crystal DS method. It achieves anadvanced understanding of the thermal and mechanical behaviour in grown multicrystallineingot by bottom grooved directional solidification method. The von Misesstress and dislocation density were reduced while using the bottom grooved furnace. This work was carried out in the different grooves of radius 30 mm, 60 mm and 90 mmof the heat exchanger block of the DS furnace. In this paper, the results are presented for60 mm radius groove only because it has got better results compared to the othergrooves. Also, the computational results of bottom grooved DS method show betterperformance compared the conventional DS method for stress and dislocation densityin grown ingot.
Juil Kim,Min Kwon,Srinivasan Ramasamy,David G. Heckel 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The genus Diadegma is a well known parasitoid group in various lepidopteran insect such as Plutella xylostella andsome are known to have symbiotic virus. Previously we reported a novel ichnovirus as named Diadegma fenestrale Ichnovirus(DfIV, 62 segments, 247,238bp) from D. fenestrale which parasitized in the P. xylostella. Here we report another ichnovirus,DsIV from Taiwan strain of D. semiclausum which parasitized in the P. xylostella. Total 64 genomic segments were sequenced,185,053bp from DsIV. Two Ichnovirus showed high similarity in 99 regions in most of segments. We already confirmedintegration of DfIV genome segments into the chromosome from the P. xylostella via genome sequencing of the lepidopteranhost. Therefore some of recombination could be passible inside of the lepidopteran genome.
Ranganathan Jaya,Rangarajan Sundaresan Mohan Kumar,Ramasamy Srinivasan 대한영상치의학회 2013 Imaging Science in Dentistry Vol.43 No.3
It has been a challenge to establish the accurate diagnosis of developmental tooth anomalies based on periapical radiographs. Recently, three-dimensional imaging by cone beam computed tomography has provided useful information to investigate the complex anatomy of and establish the proper management for tooth anomalies. The most severe variant of dens invaginatus, known as dilated odontome, is a rare occurrence, and the cone beam computed tomographic findings of this anomaly have never been reported for an erupted permanent maxillary central incisor. The occurrence of talon cusp occurring along with dens invaginatus is also unusual. The aim of this report was to show the importance of cone beam computed tomography in contributing to the accurate diagnosis and evaluation of the complex anatomy of this rare anomaly.
Jaya, Ranganathan,Kumar, Rangarajan Sundaresan Mohan,Srinivasan, Ramasamy Korean Academy of Oral and Maxillofacial Radiology 2013 Imaging Science in Dentistry Vol.43 No.3
It has been a challenge to establish the accurate diagnosis of developmental tooth anomalies based on periapical radiographs. Recently, three-dimensional imaging by cone beam computed tomography has provided useful information to investigate the complex anatomy of and establish the proper management for tooth anomalies. The most severe variant of dens invaginatus, known as dilated odontome, is a rare occurrence, and the cone beam computed tomographic findings of this anomaly have never been reported for an erupted permanent maxillary central incisor. The occurrence of talon cusp occurring along with dens invaginatus is also unusual. The aim of this report was to show the importance of cone beam computed tomography in contributing to the accurate diagnosis and evaluation of the complex anatomy of this rare anomaly.
Edward-Sam Edwin,Prabhakaran Vasantha-Srinivasan,Athirstam Ponsankar,Annamalai Thanigaivel,Selvaraj Selin-Rani,RichardW.Mankin,Sengottayan Senthil-Nathan,Kandaswamy Kalaivani,Ramasamy Kanagaraj Murali 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
Trichogramma species are used worldwide as biological control agents. A particularly important application is mass-rearing and release formanagement of field-crop and warehouse insect pests. Eggs of commonly available hosts, Spodoptera litura, Corcyra cephalonica, Plutella xylostella and Helicoverpa armigera, were exposed to different temperature and nonionizing ultraviolet (UV) radiation treatments to consider whether particular combinations of treatments positively affected T. chilonis development. The treatments had different effects on three measures of parasitoid production: the rate of parasitization, adult emergence, and adult viability. At constant temperature (24, 28, 32 °C), the mean percentage of egg parasitization was greatest on treatments of S. litura eggs. However, the mean percentage of adult emergence was significantly greater from C. cephalonica eggs at 28 °C than from eggs in other treatments. The mean percentage of adult viability was found to be 83.9% from C. cephalonica eggs at 28 °C. Ultraviolet radiation treatments (3, 6, or 9 min at 254 nm) significantly increased the mean percentage parasitization over that of the non-UV treatments. Also, the mean percentage of adult parasitoid emergence and viability were greater fromC. cephalonica eggs exposed to non-ionizing UV radiation than from eggs of other hosts in all other treatments. This information can be used bymanagers of mass-rearing programs to increase the effectiveness of T. chilonis production for biological control of pest insects.
Margaret R. Douglas,Jan Chang,Kohinoor Begum,Sevgan Subramanian,John F. Tooker,Syed Nurul Alam,Srinivasan Ramasamy 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.4
Lablab bean (Lablab purpureus) is a popular vegetable crop in Bangladesh, but farmers growing this crop experience significant losses to insect pests despite heavy reliance on conventional insecticides. We conducted field studies to improve pest management in lablab bean by testing biorational insecticides as alternatives to conventional insecticides for the control of pod borers (Maruca vitrata) and aphids (Aphis craccivora), and characterizing flower-inhabiting thrips as an emerging pest in this crop. In field experiments, spinosad was the most promising biorational we tested, suppressing pod-boring caterpillars more effectively than thiamethoxam or quinalphos. In contrast, azadirachtin (neem) did not significantly suppress any of the insect pests we measured, although target aphid populations were generally low at our research site. Using DNA barcoding at the coxI locus combined with morphological identification, we found eight thrips taxa inhabiting lablab bean flowers, dominated by Megalurothrips usitatus and M. distalis/peculiaris. A preliminary regression analysis indicated that these flower-inhabiting thrips reduced lablab bean yield. Our results suggest that spinosad may be useful within lablab bean IPM programs, and that these programs will likely need to incorporate tactics against thrips to effectively protect yield. Finally, we found that DNA barcoding was a valuable tool for pest identification in an understudied crop and region, but that to reach its full potential will require an investment in more comprehensive reference libraries.