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Historical development of karst evergreen broadleaved forests in East Asia has shaped the evolution of a hemiparasitic genus Brandisia(Orobanchaceae)

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Plant Diversity 2023年第5期45卷 501-512页

作者： Zhe Chen Zhuo Zhou Ze-Min Guo truong van do Hang Sun Yang Niu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of Sciences132 Lanhei RoadKunming 650201YunnanChina University of Chinese Academy of Sciences Beijing 100049China Vietnam National Museum of Nature Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay 10000HanoiVietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay 10000HanoiVietnam

Brandisia is a shrubby genus of about eight species distributed basically in East Asian evergreen broadleaved forests(EBLFs),with distribution centers in the karst regions of Yunnan,Guizhou,and Guangxi in southwestern *** on the hemiparasitic and more or less liana habits of this genus,we hypothesized that its evolution and distribution were shaped by the development of EBLFs *** test our hypothesis,the most comprehensive phylogenies of Brandisia hitherto were constructed based on plastome and nuclear loci(nrDNA,PHYA and PHYB);then divergence time and ancestral areas were inferred using the combined nuclear loci *** analyses reconfirmed that Brandisia is a member of Orobanchaceae,with unstable placements caused by nuclear-plastid *** Brandisia,three major clades were well supported,corresponding to the three subgenera based on *** was inferred to have originated in the early Oligocene(32.69 Mya)in the Eastern Himalayas-SW China,followed by diversification in the early Miocene(19.45 Mya)in karst *** differentiation dates of Brandisia were consistent with the origin of keystone species of EBLFs in this region(e.g.,Fagaceae,Lauraceae,Theaceae,and Magnoliaceae)and the colonization of other characteristic groups(e.g.,Gesneriaceae and Mahonia).These findings indicate that the distribution and evolution of Brandisia were facilitated by the rise of the karst EBLFs in East *** addition,the woody and parasitic habits,and pollination characteristics of Brandisia may also be the important factors affecting its speciation and dispersal.

关键词： Biogeography Brandisia Evergreen broadleaved forests(EBLFs) Karst Orobanchaceae Phylogeny

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Leaf fossils of Sabalites(Arecaceae)from the Oligocene of northern Vietnam and their paleoclimatic implications

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Plant Diversity 2022年第4期44卷 406-416页

作者： Ai Song Jia Liu Shui-Qing Liang truong van do Hung Ba Nguyen Wei-Yu-dong Deng Lin-Bo Jia Cedric Del Rio Gaurav Srivastava Zhuo Feng Zhe-Kun Zhou Jian Huang Tao Su Institute of Palaeontology Yunnan Key Laboratory for PalaeobiologyMEC International Joint Laboratory for Palaeobiology and PalaeoenvironmentYunnan Key Laboratory of Earth System ScienceYunnan UniversityKunming650500China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla666303China Vietnam National Museum of Nature Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoiViet Nam Graduate Academy of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoiViet Nam CAS Key Laboratory of Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming650204China Birbal Sahni Institute of Palaeosciences Lucknow226007India

Recent paleobotanical investigations in Vietnam provide a good opportunity to improve our understanding of the biodiversity and paleoclimatic conditions in the geological past of Southeast ***(Arecaceae)are a diverse family of typical thermophilous plants with a relatively low tolerance for *** this study,we describe well-preserved fossil palm leaves from the Oligocene dong Ho Formation of Hoanh Bo Basin,northern *** of the fossil leaves,such as a fan-shaped costapalmate lamina,an unarmed petiole,a costa slightly enlarged at the base that then tapers distally into the blade,and well-preserved amphistomatic leaves with cuticles,suggest that they represent a new fossil species,which we herein designate Sabalites colaniae ***,***,*** et *** *** with other paleontological and palaeoclimatic evidence,we conclude that a warm climate prevailed in northern Vietnam and nearby areas during the Oligocene.

关键词： Fossil Leaf Oligocene Paleoclimate Palm Vietnam

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中国和越南苔类植物新记录种--柏氏细鳞苔

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西北植物学报 2018年第1期38卷 183-186页

作者：韦玉梅唐启明 truong van do 朱瑞良广西壮族自治区中国科学院广西植物研究所广西喀斯特植物保育与恢复生态学重点实验室广西桂林541006 越南国家自然博物馆维管束植物分类与多样性保育中心越南河内100803 华东师范大学生命科学学院上海200062

报道了采自中国广西和越南北部地区细鳞苔属新记录种——柏氏细鳞苔[Lejeunea patersonii(Steph.)Steph.]。该种的主要特征为侧叶顶端圆形或钝形,叶边缘具圆齿;腹叶小,远生,宽为茎的1~2倍;叶细胞角质层平滑,三角体不明显或中等大,中部... 详细信息

报道了采自中国广西和越南北部地区细鳞苔属新记录种——柏氏细鳞苔[Lejeunea patersonii(Steph.)Steph.]。该种的主要特征为侧叶顶端圆形或钝形,叶边缘具圆齿;腹叶小,远生,宽为茎的1~2倍;叶细胞角质层平滑,三角体不明显或中等大,中部球状加厚缺。该研究对柏氏细鳞苔与其相似种进行了细致的比较讨论,并对柏氏细鳞苔原有的地理分布信息进行了更正,重新确认了该种的地理分布。

关键词：柏氏细鳞苔细鳞苔科新记录种中国越南

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越南北部渐新世棕榈叶片化石揭示的古气候和古植被区系意义

越南北部渐新世棕榈叶片化石揭示的古气候和古植被区系意义

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中国古生物学会古植物学分会、江苏省古生物学会2021年学术年会

作者：宋艾刘佳梁水清 truong van do Hung Ba Nguyen 邓炜煜东贾林波 Cedric Del Rio Gaurav Srivastava 冯卓周浙昆黄健苏涛云南大学古生物研究院中国科学院西双版纳热带植物园 Vietnam National Museum of Nature Vietnam Academy of Science and Technology Graduate Academy of Science and Technology Vietnam Academy of Science and Technology 中国科学院昆明植物研究所 Birbal Sahni Institute of Palaeosciences

棕榈作为典型的热带-亚热带植物,因其耐寒性较差的生理特性,广泛分布于全球低纬度地区。东南亚地区作为目前现生棕榈科植物重要的分布中心之一,关于该区棕榈化石的记录却寥寥无几。本研究报道了越南北部横蒲盆地渐新世dong Ho组的棕榈... 详细信息

棕榈作为典型的热带-亚热带植物,因其耐寒性较差的生理特性,广泛分布于全球低纬度地区。东南亚地区作为目前现生棕榈科植物重要的分布中心之一,关于该区棕榈化石的记录却寥寥无几。本研究报道了越南北部横蒲盆地渐新世dong Ho组的棕榈叶片化石,依据扇形肋掌状叶、脊突明显、叶柄无刺以及气孔双生等形态特征,通过对比现生掌状棕榈和相关已发表的棕榈化石,将其定为一个化石新种Sabalites colaniae ***, ***,*** et *** ***.综合研究区其他古生物学和古气候研究,以及棕榈化石的发现,揭示越南北部渐新世气候温暖湿润。此外,通过横蒲植物群与邻近地区同时期云南文山植物群、马关植物群以及周边地区孢粉学研究的植被组成的对比分析,发现越南北部与周边地区在植被组成上具有较高的相似性,认为中南半岛与华南地区的植物区系具有很深的渊源。

关键词：棕榈化石越南北部渐新世古气候植物多样性

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On the System Performance of Mobile Edge Computing in an Uplink NOMA WSN With a Multiantenna Access Point Over Nakagami-m Fading

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IEEE/CAA Journal of Automatica Sinica 2022年第4期9卷 668-685页

作者： van-truong truong van Nhan Vo Dac-Binh Ha Chakchai So-In the Faculty of Electrical-Electronic Engineering Duy Tan University the Institute of Research and Development Duy Tan University the Faculty of Information Technology Duy Tan University IEEE the Applied Network Technology(ANT)Laboratory Department of Computer ScienceCollege of ComputingKhon Kaen University

In this paper,we study the system performance of mobile edge computing(MEC)wireless sensor networks(WSNs)using a multiantenna access point(AP)and two sensor clusters based on uplink nonorthogonal multiple access(NOMA).Due to limited computation and energy resources,the cluster heads(CHs)offload their tasks to a multiantenna AP over Nakagami-m *** proposed a combination protocol for NOMA-MEC-WSNs in which the AP selects either selection combining(SC)or maximal ratio combining(MRC)and each cluster selects a CH to participate in the communication process by employing the sensor node(SN)*** derive the closed-form exact expressions of the successful computation probability(SCP)to evaluate the system performance with the latency and energy consumption constraints of the considered *** results are provided to gain insight into the system performance in terms of the SCP based on system parameters such as the number of AP antennas,number of SNs in each cluster,task length,working frequency,offloading ratio,and transmit power ***,to determine the optimal resource parameters,i.e.,the offloading ratio,power allocation of the two CHs,and MEC AP resources,we proposed two algorithms to achieve the best system *** approach reveals that the optimal parameters with different schemes significantly improve SCP compared to other similar *** use Monte Carlo simulations to confirm the validity of our analysis.

关键词： Mobile edge computing(MEC) Nakagami-m fading offloading selection combining(SC)/maximal ratio combining(MRC) successful computation probability(SCP) uplink nonortho-gonal multiple access(NOMA) wireless sensor networks(WSNs)

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Non-Negative Adaptive Mechanism-Based Sliding Mode Control for Parallel Manipulators with Uncertainties

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Computers, Materials & Continua 2023年第2期74卷 2771-2787页

作者： van-truong Nguyen Department of Mechatronics Engineering Hanoi University of IndustryHanoi159999Vietnam

In this paper,a non-negative adaptive mechanism based on an adaptive nonsingular fast terminal sliding mode control strategy is proposed to have finite time and high-speed trajectory tracking for parallel manipulators with the existence of unknown bounded complex uncertainties and external *** proposed approach is a hybrid scheme of the online non-negative adaptive mechanism,tracking differentiator,and nonsingular fast terminal sliding mode control(NFTSMC).Based on the online non-negative adaptive mechanism,the proposed control can remove the assumption that the uncertainties and disturbances must be bounded for the NFTSMC *** proposed controller has several advantages such as simple structure,easy implementation,rapid response,chattering-free,high precision,robustness,singularity avoidance,and finite-time *** all control parameters are online updated via tracking differentiator and non-negative adaptive law,the tracking control performance at high-speed motions can be better in real-time requirement and disturbance rejection ***,simulation results validate the effectiveness of the proposed method.

关键词： Parallel manipulator uncertainties and disturbances nonsingular fast terminal sliding mode control non-negative adaptive mechanism tracking differentiator

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Engineering punching shear strength of flat slabs predicted by nature-inspired metaheuristic optimized regression system

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Frontiers of Structural and Civil Engineering 2024年第4期18卷 551-567页

作者： Dinh-Nhat truong van-Lan TO Gia Toai truong Hyoun-Seung JANG Department of Civil Engineering University of Architecture Ho Chi Minh CityHo Chi Minh City 700000Vietnam Faculty of Civil Engineering and Technology Dong A UniversityDa Nang City 550000Vietnam School of Architecture Seoul National University of Science and TechnologySeoul 01811Republic of Korea

Reinforced concrete(RC)flat slabs,a popular choice in construction due to their flexibility,are susceptible to sudden and brittle punching shear *** design methods often exhibit significant bias and *** estimation of punching shear strength in RC flat slabs is crucial for effective concrete structure design and *** study introduces a novel computation method,the jellyfish-least square support vector machine(JS-LSSVR)hybrid model,to predict punching shear *** combining machine learning(LSSVR)with jellyfish swarm(JS)intelligence,this hybrid model ensures precise and reliable *** model’s development utilizes a real-world experimental data *** with seven established optimizers,including artificial bee colony(ABC),differential evolution(DE),genetic algorithm(GA),and others,as well as existing machine learning(ML)-based models and design codes,validates the superiority of the JS-LSSVR hybrid *** innovative approach significantly enhances prediction accuracy,providing valuable support for civil engineers in estimating RC flat slab punching shear strength.

关键词： punching shear strength reinforced concrete flat slabs machine learning jellyfish search support vector machine

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A new species of the genus Leptolalax (Anura： Megophryidae) from southern Vietnam

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Zoological Research 2018年第3期39卷 185-201页

作者： Tang van Duong Dang Trong do Chung Dac Ngo truong Quang Nguyen Nikolay A. Poyarkov Vietnam National Museum of Nature Vietnam Academy of Science and Technology Hanoi Vietnam Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State University Moscow 119234 Russia Faculty of Natural Sciences Phu Yen University Tuy Hoa Phu Yen Vietnam College of Education Hue University Hue Vietnam Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Hanoi Vietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology Cau Giay Hanoi Vietnam Joint Russian- Vietnamese Tropical Research and Technological Center Nghia Do Cau Giay Hanoi Vietnam

We describe a new species of megophryid frog from Phu Yen Province in southern Vietnam. Leptolalax macrops sp. nov. is distinguished from its congeners by a combination of the following morphological attributes：（1） body size medium （SVL 28.0-29.3 mm in three adult males, 30.3 mm in single adult female）; （2） supra-axillary glands present, creamy white; ventrolateral glands indistinct; （3） tympanum externally distinct; （4） dorsal skin roughly granular with larger tubercles, dermal ridges on dorsum absent; （5） rudimentary webbing present between fingers I-II and I1-111; rudimentary webbing between all toes; fingers and toes without dermal fringes; （6） in life ventral surface greyish-violet with white speckling; （7） supratympanic fold distinct, dark brown in life; （8） iris bicolored, typically golden in upper half, fading to golden green in lower half; （9） tibia short （TbL/SVL 0.44-0.45 in males）; and （10） eyes large and protuberant （ED/SVL 0.15-0.16 in males） From all congeners for which comparable sequences are available, the new species differs markedly in the 16S rRNA mitochondrial gene sequence （P-distance〉5.7%）. The new species is currently known only from montane evergreen tropical forests of Song Hinh District, Phu Yen Province, and M＇Drak District of Dak Lak Province at elevations of 470-630 m a.s.l.. We suggest the new species should be considered as Data Deficient following the IUCN＇s Red List categories. We also report a previously unknownLeptolalax mtDNA lineage from an evergreen tropica forest in the Hoa Thinh District of Phu Yen Province which may also represent an undescribed species.

关键词： Leptolalax macrops sp. nov. Phu YenProvince Dak Lak Province Southern coastal regionof Vietnam

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System Performance of Wireless Sensor Network Using LoRa–Zigbee Hybrid Communication

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Computers, Materials & Continua 2021年第8期68卷 1615-1635页

作者： van-truong truong Anand Nayyar Showkat Ahmad Lone Faculty of Electrical and Electronic Engineering Duy Tan UniversityDa Nang550000Vietnam Institute of Research and Development Duy Tan UniversityDa Nang550000Vietnam Graduate School Duy Tan UniversityDa Nang 550000Vietnam Faculty of Information Technology Duy Tan UniversityDa NangVietnam Department of Basic Science College of Science and Theoretical StudiesSaudi Electronic UniversityJeddah CampusKSA

Wireless sensor network(WSN)is considered as the fastest growing technology pattern in recent years because of its applicability in varied *** sensor nodes with different sensing functionalities are deployed in the monitoring area to collect suitable data and transmit it to the *** communications in heterogeneous WSNs,is a critical issue that needs to be *** this research paper,we study the system performance of a heterogeneous WSN using LoRa–Zigbee hybrid ***,two Zigbee sensor clusters and two LoRa sensor clusters are used and combined with two Zigbee-to-LoRa converters to communicate in a network managed by a LoRa *** overall system integrates many different sensors in terms of types,communication protocols,and accuracy,which can be used in many applications in realistic environments such as on land,under water,or in the *** addition to this,a synchronous management software on ThingSpeak Web server and Blynk app is *** the proposed system,the token ring protocol in Zigbee network and polling mechanism in LoRa network is *** system can operate with a packet loss rate of less than 0.5%when the communication range of the Zigbee network is 630 m,and the communication range of the LoRa network is 3.7 *** the basis of the digital results collected on the management software,this study proves tremendous improvements in the system performance.

关键词： Wireless sensor network Zigbee LoRa communication protocol converter packet loss

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Antioxidant and anti-inflammatory roles of tea polyphenols in inflammatory bowel diseases

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Food Science and Human Wellness 2022年第3期11卷 502-511页

作者： van-Long truong Woo-Sik Jeong Food and Bio-industry Research Institute School of Food Science&BiotechnologyCollege of Agriculture and Life SciencesKyungpook National UniversityDaegu 41566Korea

Polyphenols,including phenolic acids,flavonoids,and procyanidins,are abundant in food and beverage derived from ***(Camellia sinensis)is particularly rich in polyphenols(e.g.,catechins,theaflavins,thearubigins,gallic acid,and flavonols),which are thought to contribute to the health benefits of *** intake of tea polyphenols has been described to prevent and/or attenuate a variety of chronic pathological conditions like cardiovascular diseases,neurodegenerative diseases,diabetes,and *** review focuses on established antioxidant and anti-inflammatory properties of tea polyphenols and underlying mechanisms of their involvement in inflammatory bowel diseases(IBD).Tea polyphenols act as efficient antioxidants by inducing an endogenous antioxidant defense system and maintaining intracellular redox *** polyphenols also regulate signaling pathways such as nuclear factor-κB,activator protein 1,signal transducer and activator of transcriptions,and nuclear factor E2-related factor 2,which are associated with IBD *** pieces of evidence have indicated that tea polyphenols enhance epithelial barrier function and improve gut microbial dysbiosis,contributing to the management of inflammatory ***,this study suggests that supplementation of tea polyphenols could prevent inflammatory conditions and improve the outcome of patients with IBD.

关键词： Antioxidant Anti-inflammation Epithelial barrier function Inflammatory bowel diseases Gut microbiota Tea polyphenols

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