Seismic Response of Long Span Cable-stayed Bridge to Near-fault Vertical Ground Motions

Bipin Shrestha 대한토목학회 2015 KSCE Journal of Civil Engineering Vol.19 No.1

In design and analysis of seismic resistant structures and particularly the bridge structures vertical ground motion tends, in general,to be ignored or underestimated. However, during recent earthquakes high amplitude of motions were recorded in vertical directionnear to the fault, invalidating such design assumptions of neglecting the vertical motion. This paper presents an analyticalinvestigation on the effect of the near fault vertical ground motions on seismic response of a long span cable-stayed bridge. Responses of the bridge subjected to ground motions with and without vertical ground motion is carried using near fault groundmotions on three dimensional bridge model. A suite of five near field ground motion with varying V/H (Vertical to Horizontal) ratioof peak ground acceleration is used. Influence of vertical motion on global and local structural response is presented. The study alsotakes into consideration the arrival time of peak vertical motion which has received little attention previously. Effects of coincidenceof peak vertical motion with the peak horizontal motion in time domain are also analyzed. The study reveals that influence of verticalmotion on the seismic response of the Karnali Bridge is slight and coinciding peak vertical motion with peak horizontal motion alsohave slighter effects compared to the motion without such coincidence.

Stability of Tocopherols and Lutein in Oil Extracted from Roasted or Unroasted Mustard Seeds During the Oil Oxidation in the Dark

Bipin Vaidya,최은옥 한국식품과학회 2011 Food Science and Biotechnology Vol.20 No.1

This study compared stabilities of tocopherols and lutein in oil extracted from roasted mustard seeds (RMSO) with those in oil from unroasted seeds (URMSO)during oil oxidation at 60^oC in the dark for 12 days. Tocopherols and lutein were determined by high performance liquid chromatography, and the oil oxidation was monitored with conjugated dienoic acid (CDA) content and fatty acid composition by gas chromatography. The rate of CDA increase was lower in RMSO (0.038%/day) than in URMSO (0.047%/day) during 12-day oxidation in the dark, with little change in fatty acid composition in both oils. Tocopherols and lutein were more abundant in RMSO,initially 465.38 and 100.55 μg/g, respectively, than in URMSO, and their stability was higher in RMSO (−4.63and −5.94%/day of degradation in tocopherols and lutein,respectively) than in URMSO during 12-day oxidation of oil, both of which contributed to higher autoxidative stability of RMSO than URMSO.

Architecture for Mashups in the Cloud

Bipin Upadhyaya,InKyu Kim 한국EA학회 2009 정보기술아키텍처연구 Vol.6 No.1

Indian System of Soil Classification Scheme: A Proposed Framework

Bipin Bihari Mishra 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6

INTEGRATED OMICS APPROACH FOR THE ELUCIDATION OF DEFENSE MECHANISM AGAINST VIRAL HEMORRHAGIC SEPTICEMIA VIRUS INFECTION

Bipin Vaidya,Se-Young Cho,Joseph Kwon,Keun Sik Baik,Hyeun-Jong Bae,Myung-Joo Oh,Duwoon Kim 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

Focused Review on Cu–Ni–Sn Spinodal Alloys: From Casting to Additive Manufacturing

Bipin Sankar,Chaitanya Vinay,Jithin Vishnu,Karthik V. Shankar,G. P. Gokul Krishna,V. Govind,A. J. Jayakrishna 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.5

The present review article evaluates the research and progress status of Cu–Ni–Sn-based spinodal alloys focussed on themethods and technologies implemented to enhance the properties of cast Cu–Ni–Sn alloys in industrial applications, particularlyin components such as bearings, bushings, propellers, and impellers that find extensive demand in the marineand automotive industry. The review introduces the limitations of employing copper-beryllium alloys in the industry anddiscusses how Cu–Ni–Sn alloys represent a potential alternative. Subsequently, a comprehensive overview of spinodaldecomposition is provided, considering the thermodynamic aspects and the Cu–Ni–Sn ternary phase diagram. The processingof Cu–Ni–Sn alloys via traditional casting is explored with an overview of various casting techniques and ensuingmicrostructure-property relationships. The two significant limitations, segregation during solidification and discontinuousprecipitation, are highlighted. Strategies to overcome these limitations, such as precipitation hardening, spinodal decomposition,thermo-mechanical processing, and composition design (with the effect of varying elemental additions), are furtherelaborated. The review summarises novel processing routes encompassing mechanical alloying, rapid solidification, powdermetallurgy, and spray deposition for developing spinodal Cu–Ni–Sn alloys. Finally, the progress in fabricating Cu–Ni–Snspinodal alloys using additive manufacturing techniques such as selective laser melting is highlighted. There are publishedreview papers on the wrought processing of Cu–Ni–Sn alloys, so this area has not been covered here. Overall, this reviewarticle is intended to streamline an overview of the characteristics and gradual developments from cast Cu–Ni–Sn spinodalalloys to additive manufacturing-based Cu–Ni–Sn spinodal alloys.

Effect of Temperature on Oxidation Kinetics of Walnut and Grape Seed Oil

Bipin Vaidya,은종방 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.suppl1

The effects of temperature on the oxidation of walnut oil (WO) and grape seed oil (GSO) were investigated. Both oils were stored at 25, 40, 60, and 80oC for 60, 30, 12,and 6 day, respectively. Degree of oxidation was measured in terms of peroxide value (POV), conjugated dienoic acid (CDA) value, and p-anisidine value (p-AV). The rates of increase in POV, CDA, and p-AV in both oils were strongly dependent on storage temperature. The induction period (IP) decreased gradually with increasing storage temperature in both oils. WO showed shorter IPs (23.0,9.2, and 1.0 day at 25, 40, and 60oC, respectively) than those of GSO (41.5, 12.0, and 1.8 day at 25, 40, and 60oC,respectively), indicating the higher susceptibility of WO to oxidation. The activation energy (Ea) for the IP of WO and GSO autoxidation was similar (75.87 and 75.66 kJ/mol,respectively), revealing similar temperature dependence for autoxidation in WO and GSO.

Community-wise evaluation of rice beer prepared by some ethnic tribes of Tripura

Bipin Kumar Sharma 한국식품연구원 2016 Journal of Ethnic Foods Vol.3 No.4

Tripura is inhabited by many indigenous communities having unique ethno-socio-cultural lifestyle with age-old rice beer brewing techniques using wild herbs and local rice varieties popularly known as chuwak or zu. The present study is focused on comparative evaluation of brewing methods and nutritional aspects of rice beer among Debbarma, Jamatia, Koloi, and Molsom tribes of Tripura. Sample ingredients and plant species are properly identified before reporting. Rice beer is also prepared in laboratory conditions for comparative studies of qualitative and quantitative aspects. Thirteen different plant species are used by these four tribes for preparation of starter cultures using soaked rice flour. Markhamia stipulate (Wall.) Seem. is common to all communities for starter cake preparation. Litsea monopetala (Roxb.) Pers. is used by all three communities except Jamatia. The use of Ananus comosus Mill. is common among Debbarma and Jamatia tribes, whereas that of Artocarpus heterophyllus Lam. is common among Molsom and Koloi tribes. However, Aporusa diocia (Roxb.) Muell., Combretum indicum (L.) DeFilipps., and Citrus sinensis (L.) Osbeck. are used only by Debbarma tribe for unique tangy flavor. The physicochemical properties of rice beer varied within tribes for its moisture content, carbohydrate content, reducing sugar, and alcohol percentage. The concentration of alcohol increases with aging and prolonged fermentation. The plants reported here are also reported for having nutritional and medicinal benefits for the metabolic stability in humans, which make the process more prospective for commercialization if a standard for maintaining a quality and associated risk can be determined.

Optimal Packet Scheduling Algorithms for Token-Bucket Based Rate Control

Neerav Bipin Mehta,Abhay Karandikar 한국통신학회 2005 Journal of communications and networks Vol.7 No.1

Optimal Packet Scheduling Algorithms for Token-Bucket Based Rate Control

Mehta Neerav Bipin,Karandikar Abhay The Korea Institute of Information and Commucation 2005 Journal of communications and networks Vol.7 No.1

In this paper, we consider a scenario in which the source has been offered QoS guarantees subject to token-bucket regulation. The rate of the source should be controlled such that it conforms to the token-bucket regulation, and also the distortion obtained is the minimum. We have developed an optimal scheduling algorithm for offline (like pre-recorded video) sources with convex distortion function and which can not tolerate any delay. This optimal offline algorithm has been extended for the real-time online source by predicting the number of packets that the source may send in future. The performance of the online scheduler is not substantially degraded as compared to that of the optimal offline scheduler. A sub-optimal offline algorithm has also been developed to reduce the computational complexity and it is shown to perform very well. We later consider the case where the source can tolerate a fixed amount of delay and derive optimal offline algorithm for such traffic source.