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29 results on '"Nguyen, Tran Thi Thao"'

8. Optimization of culture conditions for callus proliferation of Curculigo orchioides Gaertn

Author

Man Nguyen Thi Nguyen, Phuong Truong Thi Bich, An Nguyen Hoang, Y Tran Thi Nhu, Nhung Doan Thi Phuong, and Nguyen Tran Thi Thao

Subjects
chemistry.chemical_compound, Ecology, biology, chemistry, Traditional medicine, Callus, Kinetin, Plant Science, biology.organism_classification, Ecology, Evolution, Behavior and Systematics, Curculigo orchioides
Abstract

Curculigo orchioides Gaertn is a herbaceous plant that has long been used as a tonic in Vietnam with noticeable health benefits. However, the demand for rhizomes of this species could not be met due to their decreasing number in natural habitats. Despite its vulnerability, there are still not enough researches on producing calli of C. orchioides, which is a method having the capacity of creating a large source of cell biomass for bioactive compounds’ extractions. Thus, this study was conducted to figure out the best conditions for C. orchioides’s callus proliferation. Different light regimes, mineral media, and concentrations of some factors like kinetin (KIN), α-naphthaleneacetic acid (NAA), yeast extract (YE), activated charcoal (AC), and silver nitrate (AgNO3) were examined. It is shown by the results that half-strength MS medium (½ MS) given 0.5 mg/L KIN and MS medium supplemented with 0.5 mg/L KIN and put in the dark (0 light hour : 24 dark hours) are the optimal conditions for callus proliferation, with the highest fresh weights (FWs), dry weights (DWs), and growth indices (GIs) of 3.89 g / 0.45 g / 7.78, and 4.10 g / 0.47 g / 8.20, respectively. Additionally, the inhibitory effects of AgNO3, YE, and AC were demonstrated since there was no observed heavy callus in the media containing those factors.

Published
2021
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10. OFDM-IDMA Uplink Multi-user System with Scalable Latency for Next Generation WLAN

Author

Yuhei Nagao, Leonardo Lanante, Nguyen Tran Thi Thao, and Hiroshi Ochi

Subjects
business.industry, Computer science, Orthogonal frequency-division multiplexing, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Telecommunications link, Scalability, Latency (engineering), business, Multi-user, Computer network
Abstract

In this paper, we propose an Interleave-Division Multiple Access (IDMA) based uplink multi-user system fornext generation WLAN. By minimizing the latency throughaccurate detection per iteration, we were able to design a receiver architecture that meets the latency demands of current IEEE802.11 WLAN. To do this, the proposed system utilizes a novel algorithm for simplified LLR calculation of the soft input soft output demapper needed in the IDMA first stage detection.The proposed system has a maximum of 34.8 bits/s/Hz spectral efficiency for a single spatial stream and can support up to 8 users in a single 20MHz channel. We compare the proposed system to a reference OFDMA system and show its advantages in terms of diversity, flexibility and BER performance. Keywords: 802.11ax; IDMA; uplink multi-user access

Published
2020
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16. Live Demonstration: Accurate Time Synchronization for Industrial Wireless LAN Systems

Author

Kyushu Institute of Technology, Fukuoka, Japan, Computer Science Department, Binus Graduate Program, Bina Nusantara University, Jakarta, Nguyen, Tran Thi Thao, Nagao, Yuhei, Surantha, Nico, Kurosaki, Masayuki, Ochi, Hiroshi, Kyushu Institute of Technology, Fukuoka, Japan, Computer Science Department, Binus Graduate Program, Bina Nusantara University, Jakarta, Nguyen, Tran Thi Thao, Nagao, Yuhei, Surantha, Nico, Kurosaki, Masayuki, and Ochi, Hiroshi

Abstract

type:Conference Paper, We demonstrate a precision time protocol (PTP) used to synchronize clocks in industrial wireless local area network (iWLAN) communication systems. The implementation of the system on FPGA boards for accurate verification and to test the feasibility of the system in a real environment. The result has been confirmed that time synchronization is high accuracy from 40 to 100 ns., IEEE International Symposium on Circuits and Systems (ISCAS 2019), May 26-29, 2019, Sapporo Japan, source:DOI:10.1109/ISCAS.2019.8702192

Published
2020

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