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  1. Article ; Online: Characterisation of strength and deformation characteristics of alkali-activated rice husk ash filler-assemblage perimeter rock

    Wenhua Zhao / Ruilin He / Qi Sun / Qi Gu

    Scientific Reports, Vol 13, Iss 1, Pp 1-

    2023  Volume 13

    Abstract: Abstract In this study, the strength characteristics, deformation characteristics and damage characteristics of three kinds of specimens, namely, surrounding rock, cemented paste backfill (CPB) and a surrounding rock-CPB combination, were studied by ... ...

    Abstract Abstract In this study, the strength characteristics, deformation characteristics and damage characteristics of three kinds of specimens, namely, surrounding rock, cemented paste backfill (CPB) and a surrounding rock-CPB combination, were studied by uniaxial compression testing using rice husk ash and slag as cementing materials, and the mechanical properties of the combination specimens with different height ratios were also analyzed. The results showed that the surrounding rock specimens were the strongest, followed by the composite body, and the CPB was the weakest. The relationship between different height ratios of the assemblage and the cut line modulus was found according to the fitted curves. The CPB specimens and the surrounding rock specimens showed ductile damage, while the assemblage specimens showed brittle damage.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2023-10-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Application of Wavelet Transform for the Detection of Cetacean Acoustic Signals

    Ruilin He / Yang Dai / Siyi Liu / Yuhao Yang / Yingdong Wang / Wei Fan / Shengmao Zhang

    Applied Sciences, Vol 13, Iss 4521, p

    2023  Volume 4521

    Abstract: Cetaceans are an important part of the ocean ecosystem and are widely distributed in seas across the world. Cetaceans are heavily reliant on acoustic signals for communication. Some Odontoceti can perceive their environments using their sonar system, ... ...

    Abstract Cetaceans are an important part of the ocean ecosystem and are widely distributed in seas across the world. Cetaceans are heavily reliant on acoustic signals for communication. Some Odontoceti can perceive their environments using their sonar system, including the detection, localization, discrimination, and recognition of objects. Acoustic signals are one of the most commonly used types of data for Cetacean research, and it is necessary to develop Cetacean acoustic signal detection methods. This study compared the performance of a manual method, short-time Fourier transform (STFT), and wavelet transform (WT) in Cetacean acoustic signal detection. The results showed that WT performs better in click detection. According to this research, we propose using STFT for whistle and burst-pulse marking and WT for click marking in dataset building. This research will be helpful in facilitating research on the habits and behaviors of groups and individuals, thus providing information to develop methods for protecting species and developing biological resources.
    Keywords wavelet transform ; short-time Fourier transform ; hydrophone ; Cetacean ; acoustic signal ; signal detection ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Subject code 551
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Record of a juvenile Omura's whale live stranded in Hainan Island

    Ruilin He / Xiaoling Wan / Minmin Chen / Fei Fan / Ding Wang / Jinsong Zheng

    Water Biology and Security, Vol 1, Iss 3, Pp 100056- (2022)

    Evidence of a potential breeding ground in the South China Sea?

    2022  

    Abstract: On January 12, 2011, a very young juvenile Bryde's-like baleen whale was found stranded alive on the east coast of Hainan Island, in the South China Sea. Unfortunately, it died the next morning. This baleen whale showed some unique external morphology ... ...

    Abstract On January 12, 2011, a very young juvenile Bryde's-like baleen whale was found stranded alive on the east coast of Hainan Island, in the South China Sea. Unfortunately, it died the next morning. This baleen whale showed some unique external morphology and skull features of the Omura's whale (Balaenoptera omurai). Subsequently, it was genetically identified as an Omura's whale using two different mitochondrial DNA markers. This study documents the first confirmed live stranding of a juvenile Omura's whale on Hainan Island, China. Our findings expand the known distribution range of this species in Chinese waters and may indicate that waters around Hainan Island in the South China Sea could be a potential breeding ground for the Omura's whale.
    Keywords Omura's Whale ; Balaenoptera omurai ; Species identification ; Distribution ; Breeding ground ; South China Sea ; Environmental sciences ; GE1-350 ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2022-08-01T00:00:00Z
    Publisher KeAi Communications Co. Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Corydalis decumbens Can Exert Analgesic Effects in a Mouse Neuropathic Pain Model by Modulating MAPK Signaling

    Yunting Chen / Zongbin Jiang / Aimin Zhang / Ruilin He / Zenghua Zhou / Shengrong Xu

    Computational and Mathematical Methods in Medicine, Vol

    2022  Volume 2022

    Abstract: Objectives. This study is aimed at investigating the analgesic effect of the administration of Corydalis decumbens (CD) in a mouse model of postherpetic neuralgia (PHN) and at elucidating its mechanism of analgesic action. Methods. Adult Kunming (KM) ... ...

    Abstract Objectives. This study is aimed at investigating the analgesic effect of the administration of Corydalis decumbens (CD) in a mouse model of postherpetic neuralgia (PHN) and at elucidating its mechanism of analgesic action. Methods. Adult Kunming (KM) mice were randomly divided into control, CD, and vehicle-treated groups. Neuropathic pain was induced with a single intraperitoneal injection of resiniferatoxin (RTX). Thermal hyperalgesia was assessed with a hot/cold plate test, and mechanical allodynia was evaluated using von Frey filaments. The activation states of astrocytes, microglia, and the mitogen-activated protein kinase (MAPK) pathway in the spinal cord were determined by immunofluorescence staining and Western blot analysis of Iba-1, GFAP, phospho-p38, and phospho-Jun N-terminal kinase (JNK). Results. RTX diminished thermal sensitivity and gradually increased sensitivity to tactile stimulation. The expression of Iba-1, GFAP, phospho-p38 MAPK, and phospho-JNK was upregulated in the RTX-induced postherpetic neuralgia mouse model. Systemic treatment with CD significantly ameliorated thermal sensitivity and mechanical hyperalgesia and was accompanied by a reduction in the expression of Iba-1 and GFAP and reduced phosphorylation of p38 and JNK. Conclusions. This study suggests that CD is effective at ameliorating mechanical hyperalgesia in PHN mice and that its mechanism of action may involve modulation of MAPK phosphorylation and glial cell activation. Thus, CD may be a promising alternative therapy for PHN.
    Keywords Computer applications to medicine. Medical informatics ; R858-859.7
    Subject code 616
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Research on target detection of Engraulis japonicus purse seine based on improved model of YOLOv5

    Jiaze Zhang / Shuxian Wang / Shengmao Zhang / Fenghua Tang / Wei Fan / Shenglong Yang / Yongwen Sun / Yang Liu / Wenbin Zhu / Shan Zhang / Ruilin He

    Frontiers in Marine Science, Vol

    2022  Volume 9

    Abstract: The refined monitoring and identification of fishing operations by fishing vessels is of great significance and value to fishing vessels. In order to solve the problem of inaccurate statistics of current Engraulis japonicus fishing quota and ... ...

    Abstract The refined monitoring and identification of fishing operations by fishing vessels is of great significance and value to fishing vessels. In order to solve the problem of inaccurate statistics of current Engraulis japonicus fishing quota and classification, this paper proposes an improved identification algorithm based on YOLOv5. This method introduces the SENet attention mechanism into the YOLOv5 backbone network structure, integrates the target information in different periods of fishing operations, reduces the interference of complex backgrounds, improves the precision of model detection, and ensures real-time detection efficiency. The artificially shot Engraulis japonicus videos are used as the dataset of the study, and the video is converted into a picture format to realize pre-labeling and processing. The 5550 images are divided into the training set, validation set, and test set according to 8:1:1. In order to verify the validity of the data, a set of in the control experiment, the YOLOv5 backbone network was replaced by MobileNetV2 and the SENet attention mechanism was introduced, and four models were implemented for comparison. The experimental results show that the research algorithm can obtain a mean average precision (mAP) of 99.3%, a precision of 98.9%, and a recall of 98.7%, which are improved by 1.4%, 1.7% and 2.5% respectively compared with the original model. The experimental results match the expectations. According to the statistics of some categories, the Kalman filter and the Hungarian matching method are used to count the main categories of fishing baskets, and an accuracy of 96.5% can be obtained. The threshold method for fishing nets and processing vessels can obtain 85.8% and 75% accuracy. These results shows that this target detection research can provide new ideas for job identification of Engraulis japonicus and provide auxiliary means for job statistics.
    Keywords Engraulis japonicus ; quota fishing ; YOLOv5 ; attention mechanism ; Kalman filter ; Science ; Q ; General. Including nature conservation ; geographical distribution ; QH1-199.5
    Subject code 551
    Language English
    Publishing date 2022-07-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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