Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health最新文献

Modeling and analysis of ultrasonic cavitation for permeation enhancement 超声空化增透的建模与分析

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673670

Tangtang Lou, C. Bai, Peiyu Zhang

引用次数: 0

Effects of different rooting agents on photosynthetic characteristics of Zelkova serrata 不同生根剂对锯齿泽娃光合特性的影响

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673929

Bo Chen, Jinchao Shi, Xinyu Yang

{"title":"Effects of different rooting agents on photosynthetic characteristics of Zelkova serrata","authors":"Bo Chen, Jinchao Shi, Xinyu Yang","doi":"10.1117/12.2673929","DOIUrl":"https://doi.org/10.1117/12.2673929","url":null,"abstract":"To study the effects of different rooting agents on the photosynthetic characteristics of Zelkova serrata. After the shoots of Zelkova serrata were treated with different rooting agents, the photosynthetic rate, transpiration rate, intercellular carbon dioxide concentration and stomatal velocity of new leaves were measured; The daily variation of each index is analyzed according to the index data. After treatment with different rooting agents, the transpiration rate and stomatal conductance of Zelkova serrata were basically consistent with the net photosynthetic rate, and there was an obvious \"midday rest\" phenomenon, and there was a double peak curve, the peak values appeared at 10 o'clock and 14 o'clock respectively. Compared with pure photosynthetic rate, intercellular CO2. The daily change of concentration is opposite to the pure photosynthetic rate and presents a single peak type, and the intercellular CO2. The concentration was lower than that of the control group, and the light leaf beech treated with ABT 1 rooting agent showed the minimum trend and low peak value. This shows that different rooting agent treatments can improve the metabolism and physiological status of Zelkova serrata, and improve its photosynthetic capacity.","PeriodicalId":231020,"journal":{"name":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115988313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Label-free viability detection of T-cells based on 2D bright-field microscopic images and deep learning 基于二维亮场显微图像和深度学习的t细胞无标记活力检测

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673564

Bo Li, Zhi Song, Liujia Shi, Yutao Li, Duli Yu, Xiaoliang Guo

{"title":"Label-free viability detection of T-cells based on 2D bright-field microscopic images and deep learning","authors":"Bo Li, Zhi Song, Liujia Shi, Yutao Li, Duli Yu, Xiaoliang Guo","doi":"10.1117/12.2673564","DOIUrl":"https://doi.org/10.1117/12.2673564","url":null,"abstract":"The measurement of cell viability is critical in the biomedical field. It is currently accomplished by staining cells with various stains and then manually or with instruments such as counters counting dead or live cells. However, the cell staining step is relatively time-consuming, and the stain is toxic. The internal structure of the cells is destroyed after staining, resulting in valuable cells that cannot be reused later. We proposed a label-free cell detection algorithm based on 2D bright-field images of T-cells and deep learning in this work. When used, this method eliminates the need for staining operations on cells, and cell viability is determined directly from the detection of bright-field cell images. The method based on YOLOX deep learning analysis has an excellent detection performance on bright-field images of T-cells, and the framework achieves the mAP (mean average precision) of more than 96.31% after cell detection. Experimental results show that combining 2D cell bright-field images with deep neural networks can yield a new label-free method for cell analysis.","PeriodicalId":231020,"journal":{"name":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132551582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stem cells, scaffolds, and growth factors in dental tissue engineering 干细胞、支架和生长因子在牙组织工程中的应用

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673569

Zepeng Zhao, Lixia Gao

引用次数: 0

Identification of saffron origin and determination of crocin content in saffron based on machine vision and visible-near infrared spectroscopy 基于机器视觉和可见-近红外光谱的藏红花产地鉴别及藏红花中藏红花素含量测定

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673606

Binbin Guan, Mi Zhou, Jinen Xiong, Keqing Li

{"title":"Identification of saffron origin and determination of crocin content in saffron based on machine vision and visible-near infrared spectroscopy","authors":"Binbin Guan, Mi Zhou, Jinen Xiong, Keqing Li","doi":"10.1117/12.2673606","DOIUrl":"https://doi.org/10.1117/12.2673606","url":null,"abstract":"Saffron is a kind of medicine food homologous products with ornamental, edible, medicinal and economic value, and the identification of the origin of saffron and the determination of the content of its effective components play an important role in the evaluation of its economic value and medicinal efficacy. In this study, the content of crocin in saffron samples from different habitats was detected by UPLC technology, the color and shape features of saffron were extracted by machine vision technology, and the spectral feature variables of saffron were screened by visible-near infrared technology combined with variables; k-nearest neighbor algorithm (KNN) model was established to identify the origin of saffron. The result shows that machine vision combined with visible-near infrared spectral variables could identify the origin of saffron, and the recognition rate of KNN model is 90.32%. Back propagation neural network (BP-ANN) was established to determine the content of crocin in saffron. The result shows that visible-near infrared spectroscopy could better predict the content of crocin in saffron. The correlation coefficient of crocin I in prediction set was 0.9883, the correlation coefficient of crocin Ⅱ in prediction set was 0.9982. The above results showed that the technology could be used to identify the origin of saffron and determine the content of crocin rapidly.","PeriodicalId":231020,"journal":{"name":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122361050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of cysteine content by Cu(І)-neocuproine spectrophotometry 铜(І)-新根碱分光光度法测定半胱氨酸含量

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673904

C. Tu, Xin-rong Wen

引用次数: 0

Technical application of optical microscopy in human life and health 光学显微镜在人类生活和健康中的技术应用

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673739

Huarui Wang

引用次数: 0

Experimental research on metrological performance evaluation of xenon light source equipment for therapeutic use 治疗用氙气光源设备计量性能评价的实验研究

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673575

Yang Xu, Tingting Ren, Tao Zhang, Wei Gong, Han Luo

引用次数: 0

Preparation of pigskin collagen by ultrasound-assisted semi-bionic enzymatic process 超声辅助半仿生酶法制备猪皮胶原蛋白

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673562

Xuewei Yang, Lebin Yin, Xueyun Luo, Wen-Tao Zou, Chao He

引用次数: 0

Effects and analysis of magnetic treatment on the amount of polysaccharides secreted by Bacillus spp. 磁处理对芽孢杆菌多糖分泌量的影响及分析。

Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health Pub Date : 2023-04-04 DOI: 10.1117/12.2673901

Jianwei Zhang, Jiaming Li

{"title":"Effects and analysis of magnetic treatment on the amount of polysaccharides secreted by Bacillus spp.","authors":"Jianwei Zhang, Jiaming Li","doi":"10.1117/12.2673901","DOIUrl":"https://doi.org/10.1117/12.2673901","url":null,"abstract":"Bacillus spp. were cultured in a magnetic field environment using a fluid or liquid culture medium to investigate the effect of magnetic treatment on the amount of polysaccharides secreted by Bacillus spp. Most Bacilli belong to the genus Bacillus, a general term used to describe a group of aerobic or facultative anaerobic, spore-producing gram-positive bacteria, bacteria that can produce peptides, proteins, enzymes, functional polysaccharides, and other metabolically active substances. Bacillus extracellular polysaccharides have been shown to have antioxidant properties, immune activity, and antitumor properties, and the extracellular polysaccharides metabolized by Bacillus used in this experiment can repair skin damage caused by UV light. The effects of magnetic treatment on both the growth activity and cell membrane permeability of Bacillus spp. were experimentally explored to investigate the reasons for magnetic treatment to increase the amount of extracellular polysaccharides. The results showed that the medium-intensity magnetic field could improve the growth activity of Bacillus while increasing the expression ploidy of Bacillus surface membrane proteins, enhancing membrane permeability, and increasing the production of extracellular polysaccharide metabolism.","PeriodicalId":231020,"journal":{"name":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116876232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0