Article
Multidisciplinary Sciences
Jie Zhang, Shengping Liu, Wei Wu, Xiaochun Zhong, Tao Liu
Summary: This research develops an application program based on an Android device to quickly calculate the number of grains. By exploring the short axis measurement method and corrosion algorithm, the method achieves high accuracy and calculation efficiency. The algorithm is applicable for counting grains of various crops and is not constrained by phone models or crop types.
Article
Biology
Beini Zhang, Zhentao Zhou, Wenbin Cao, Xirui Qi, Chen Xu, Weijia Wen
Summary: This study proposes a few-shot learning bacterial colony detection method based on edge computing devices, which achieves high detection accuracy with minimal training data. Compared to traditional methods, this approach significantly improves accuracy, reduces costs, and lowers equipment requirements.
Article
Chemistry, Analytical
Shunsuke Furutani, Nozomi Furutani, Yasuyuki Kawai, Akifumi Nakayama, Hidenori Nagai
Summary: This study developed a rapid PCR and cycle sequencing method, as well as a microchip electrophoresis technique for DNA analysis, which can identify bacteria in a short time. This could help identify causative bacterial agents within one hour and facilitate early treatment of sepsis.
Review
Immunology
Felix Lamontagne, Vinay Khatri, Philippe St-Louis, Steve Bourgault, Denis Archambault
Summary: Vaccination is crucial for saving lives and reducing economic burden caused by infectious diseases. However, there are still many diseases without effective vaccines. Bacterial protein nanoassemblies have gained attention as a delivery system for antigens due to their advantages such as biocompatibility and ability to stimulate immune responses. Understanding the structural and physicochemical properties of these protein nanoassemblies is essential for designing effective vaccines.
Article
Agronomy
Yichen Qiao, Yaohua Hu, Zhouzhou Zheng, Huanbo Yang, Kaili Zhang, Juncai Hou, Jiapan Guo
Summary: This study proposed a counting method for red jujube based on improved YOLOv5s, which achieved fast and accurate detection of red jujubes. By using ShuffleNet V2 as the backbone of the model, as well as introducing a novel data loading module and feature fusion method, the improved model outperformed the original model in terms of model parameters, model size, precision, and recall. The experimental results also demonstrated the advantages of the improved model in memory occupation and recognition accuracy, providing a basis for estimating red jujube yield through vision.
Article
Environmental Sciences
Yifu Chen, Yuan Le, Dongfang Zhang, Yong Wang, Zhenge Qiu, Lizhe Wang
Summary: The ICESat-2 satellite equipped with ATLAS system and photon-counting technology provides highly accurate measurements of changes in the Earth's surface and water depths, offering a new opportunity for nearshore bathymetry. The proposed AVEBM method can accurately identify and separate photons in different water environments and depths, achieving high-precision bathymetry measurements.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Bing Zhang, Xingchen Cui, Wenxiu He, Lei Shao, Tieqiang Wang, Fanbao Meng, Yu Fu
Summary: In this study, a unique asymmetric composite membrane was constructed, which exhibited reversible and repeatable bending behavior by adjusting the humidity environment. The composite membrane achieved self-folding ability and diversified predictable 3D architectures through simple graphical programming. This research provides insight into the fabrication of programmable soft actuators and their potential application in bioinspired soft robots and smart mechanical devices.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shengwu Wen, Tianhua Wu, Hui Long, Liying Ke, Suiping Deng, Langhuan Huang, Jingxian Zhang, Shaozao Tan
Summary: In this study, AgBiS2 QDs were successfully synthesized as a near-infrared light-triggered bifunctional material for simultaneous photodynamic and photothermal antibacterial effects. The photodriven antibacterial activity of AgBiS2 QDs showed a significant reduction in bacterial survival against both S. aureus and E. coli, proposing a possible phototriggered antibacterial mechanism of inducing bacterial death through high local heat and ROS under single 808 nm NIR laser illumination.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Shupeng Liu, Zhicheng Liu, Mingyuan Wu, Xiaomei Xu, Fubin Huang, Li Zhang, Yu Liu, Qi Shuai
Summary: A photothermal synergistic chitosan-based temperature sensitive hydrogel was developed in this study, showing rapid phase transition and unique antibacterial properties. The hydrogel could release drugs quickly, dissolve bacteria, and accelerate wound healing.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biophysics
Laibao Zheng, Wenjia Dong, Chaochuan Zheng, Yunqiu Shen, Ruolan Zhou, Zhenxing Wei, Zhixuan Chen, Yongliang Lou
Summary: The study introduces a novel method for detecting foodborne pathogens based on the photothermal effect of aggregated MPBA-AuNPs, allowing for rapid and portable detection of broad-spectrum bacteria strains in real food samples. The method translates colorimetric detection into a simple temperature measurement and shows a good linear relationship between temperature increase and bacteria concentration, with a detection limit three orders of magnitude lower than traditional colorimetric assays.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Qian Wu, Lei Tan, Xiangmei Liu, Zhaoyang Li, Yu Zhang, Yufeng Zheng, Yanqin Liang, Zhenduo Cui, Shengli Zhu, Shuilin Wu
Summary: The newly synthesized Ag2S/Ti3C2 composite material exhibits high antibacterial efficacy, with the ability to kill bacteria at an efficiency of 99.99% within 20 minutes. This material utilizes a combination of photocatalytic and photothermal effects to achieve its antibacterial properties.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Xuanhao Wu, Sisi Cao, Deoukchen Ghim, Qisheng Jiang, Srikanth Singamaneni, Young-Shin Jun
Summary: The newly developed solar-driven photothermal membrane distillation (PMD) system offers efficient vapor generation, condensation, and collection, utilizing a bilayer structure to enhance optical/photothermal activities and increase membrane porosity. This system shows high permeate flux and solar energy-to-collected water efficiency, providing a promising solution for decentralized desalination in remote areas.
Article
Computer Science, Hardware & Architecture
Shuang Zheng, Junfeng Wu, Songnan Duan, Fugang Liu, Jingyi Pan
Summary: This paper proposes a crowd counting method that enhances the accuracy of counting people or crowd using ResNeSt-50 as the backbone network of YOLOv3. Spatial Pyramid Potential (SPP) and Path Aggregation Network (PANet) are added to improve the receptive field of convolutional neural network. In the case of high-density crowd, an improved VGG network and a shallow network are combined to detect high-density crowd accurately, reducing estimation error.
MOBILE NETWORKS & APPLICATIONS
(2022)
Review
Thermodynamics
Zhijing Li, Hui Lei, Ankang Kan, Huaqing Xie, Wei Yu
Summary: Graphene and its derivatives are attractive materials with high aspect ratio, excellent mechanical, thermal, and optical features, showing significant potential in photothermal applications. They are promising candidates for various applications, but also face challenges in commercialization. Future research trends will focus on exploring the commercial potential and addressing challenges in this field.
Article
Chemistry, Analytical
Bobin Lee, Yeonghun Lee, Seung-Mo Kim, Kihyeun Kim, Min-Gon Kim
Summary: The incidence of deadly infectious diseases has been increasing worldwide in recent years, leading to a high demand for rapid and accurate nucleic acid diagnostic systems. In this study, a rapid membrane-based photothermal polymerase chain reaction (PCR) system was developed, allowing for quantitative fluorescence detection. This system overcomes the limitations of conventional PCR and offers user-friendly micro-scale solution control and sample loading. The reaction pad is coated with an Au nanostructure that acts as a light-to-heat converter for thermocycling. The reaction solution is heated using a 785 nm light source, and the temperature is cycled 25 times between 63°C and 95°C within 6 minutes. The amplified samples on the membrane are then quantitatively analyzed by measuring the fluorescence signal. This membrane-based PCR approach can be easily integrated with various sample pre-treatment processes, making it a promising all-in-one molecular diagnosis platform.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Environmental Sciences
Oumar Bobbo Modibo, Yuki Tamakuma, Takahito Suzuki, Ryohei Yamada, Weihai Zhuo, Chutima Kranrod, Kazuki Iwaoka, Naofumi Akata, Masahiro Hosoda, Shinji Tokonami
Summary: The long-term measurements of radon and thoron exhalation rates in Gifu Prefecture showed a seasonal variation in radon exhalation rates, but no seasonal variation in thoron exhalation rates.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Ryohei Yamada, Masahiro Hosoda, Tomomi Tabe, Yuki Tamakuma, Takahito Suzuki, Kevin Kelleher, Takakiyo Tsujiguchi, Yoshiki Tateyama, Eka Djatnika Nugraha, Anna Okano, Yuki Narumi, Chutima Kranrod, Hirofumi Tazoe, Kazuki Iwaoka, Yumi Yasuoka, Naofumi Akata, Tetsuya Sanada, Shinji Tokonami
Summary: The concentrations of Rn-222 and Ra-226 in spring water in northern Japan were measured and found to be below the reference values set by international and European/American organizations. The annual effective ingestion dose from drinking this water was significantly lower than the overall annual effective dose from natural radiation to the Japanese population, but accounted for 8% of the WHO individual dosing criteria for drinking water.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Eka Djatnika Nugraha, June Mellawati, Wahyudi, Chutima Kranrod, Makhsun, Hirofumi Tazoe, Haeranah Ahmad, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Summary: The study in Mamuju, Indonesia, found high levels of natural radionuclides and heavy metals in the soil, indicating moderate contamination. The pollution indices and correlation analyses showed potential hazards to human health in Mamuju due to the presence of Pb and other heavy metals. Measures need to be taken to address and monitor the environmental pollution in Mamuju.
Article
Environmental Sciences
Jun Hu, Yunyun Wu, Miki Arian Saputra, Yanchao Song, Guosheng Yang, Shinji Tokonami
Summary: This study investigates the relationship between outdoor PM2.5 concentrations and indoor radon inhalation exposure by measuring radon and its progeny concentrations. The results show that indoor radon concentrations and inhalation exposure are correlated with the air quality levels of the cities.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2022)
Article
Chemistry, Multidisciplinary
Shunrou Tokonami, Morihiko Onose, Yusuke Nakasone, Masahide Terazima
Summary: The study revealed slow reaction kinetics in milliseconds for all examined BLUF proteins, contrary to previous beliefs of nanosecond red shifts. The slower dynamics in the tau(2)-phase were found to be strongly influenced by the size and nature of the C-terminal region adjacent to the BLUF domain, indicating its importance for biological functions. These results highlight the significance of Trp in the BLUF domain and propose a reaction scheme for BLUF reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biology
Narongchai Autsavapromporn, Chutima Krandrod, Pitchayaponne Klunklin, Rawiwan Kritsananuwat, Churdsak Jaikang, Kittikun Kittidachanan, Imjai Chitapanarux, Somchart Fugkeaw, Masahiro Hosoda, Shinji Tokonami
Summary: This paper presents the first investigation of the health impacts of indoor radon exposure and external dose from terrestrial radiation in Chiang Mai province during the dry season burning between 2018 and 2020. The results show that indoor radon activity concentration during the burning season was significantly higher compared to the non-burning season, and both exceeded the national and worldwide average values. The study also found that the external dose from terrestrial radiation during the burning season was higher than the worldwide average value. Overall, this study demonstrates that indoor radon and natural radioactive elements in the air play important roles in the development of lung cancer.
Article
Environmental Sciences
Hidenao Hasegawa, Hideki Kakiuchi, Shinya Ochiai, Naofumi Akata, Shinji Ueda, Shinji Tokonami
Summary: This study measured the activity concentrations of I-129 in atmospheric particulate matter samples from an area evacuated after the Fukushima Dai-ichi Nuclear Power Plant accident. The results showed that the behavior of I-129 in atmospheric PM was different from that in contaminated soils, suggesting the importance of other atmospheric PMs as hosts for I-129.
RADIATION PROTECTION DOSIMETRY
(2022)
Article
Polymer Science
Worawat Poltabtim, Arkarapol Thumwong, Ekachai Wimolmala, Chanis Rattanapongs, Shinji Tokonami, Tetsuo Ishikawa, Kiadtisak Saenboonruang
Summary: The study found that neutron and X-ray shielding properties of the Gd2O3/NR composites improved with increased Gd2O3 content, while tensile strength and elongation decreased, and hardness increased. Self-healing experiments demonstrated the potential for autonomous repair in the materials.
Article
Polymer Science
Arkarapol Thumwong, Manchusa Chinnawet, Preawpraw Intarasena, Chanis Rattanapongs, Shinji Tokonami, Tetsuo Ishikawa, Kiadtisak Saenboonruang
Summary: This study experimentally determined the X-ray shielding and morphological, density, and tensile properties of sulfur-vulcanized natural rubber latex nanocomposites containing different amounts of nano-Bi2O3 or nano-BaSO4. The results showed that the overall X-ray attenuation abilities of the nanocomposites increased with increasing filler content, while the addition of fillers also affected the mechanical properties. The study also proposed modified procedures to improve the strength of the samples for potential use in medical X-ray protective gloves.
Article
Biochemistry & Molecular Biology
Masaru Yamaguchi, Yota Tatara, Eka Djatnika Nugraha, Yoshiaki Sato, Tomisato Miura, Masahiro Hosoda, Mukh Syaifudin, Shinji Tokonami, Ikuo Kashiwakura
Summary: Proteomic analysis of serum components from mice exposed to ionizing radiation revealed dose-dependent protein variations and oxidative modifications in albumin. It also detected variations in other proteins that correlated with radiation dose. These findings suggest that protein variations and serum albumin oxidative modification responses may serve as important indicators for the effects of radiation on living organisms and as potential biomarkers for radiation dose estimation.
Article
Chemistry, Analytical
Jubair Al Mahmud, M. M. Mahfuz Siraz, Mohammad Shafiqul Alam, Sudeb Chandra Das, David Andrew Bradley, Mayeen Uddin Khandaker, Shinji Tokonami, Afroza Shelley, Selina Yeasmin
Summary: The first-ever measurement of radon concentration in commercial bottled water and deep well water samples from Dhaka city was conducted using the RAD7 Radon monitoring system. The results showed that all water samples had radon concentrations within the recommended limits, highlighting the importance of monitoring radon for public health.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Masaru Yamaguchi, Yota Tatara, Eka Djatnika Nugraha, Yuki Tamakuma, Yoshiaki Sato, Tomisato Miura, Masahiro Hosoda, Shinji Yoshinaga, Mukh Syaifudin, Shinji Tokonami, Ikuo Kashiwakura
Summary: The high-level natural background radiation area in Mamuju, Indonesia provides an opportunity to study the effects of chronic low-dose radiation exposure on humans. Proteomic and oxidative modification profiling analyses were conducted to examine the serum components of residents. The findings suggest that specific protein expression alterations and oxidative modifications of serum albumin may serve as important indicators for estimating radiation dose.
Article
Biochemistry & Molecular Biology
Arkarapol Thumwong, Jitsuna Darachai, Nuatawan Thamrongsiripak, Shinji Tokonami, Tetsuo Ishikawa, Kiadtisak Saenboonruang
Summary: This work aims to alleviate the issues caused by rapid increases in agricultural wastes by introducing waste fruit peel powder (FPP) derived from mangosteen, pomelo, or durian as natural antioxidants and reinforcing bio-fillers in natural rubber latex (NRL) gloves. The investigation showed that the addition of FPP to NRL composites enhanced the strength and elongation at the break of the specimens, and also provided natural antioxidant properties. The recommended FPP contents for actual glove production were determined based on the comparison with the requirements for medical examination latex gloves.
Article
Environmental Sciences
Mizuo Kajino, Akira Watanabe, Masahide Ishizuka, Kazuyuki Kita, Yuji Zaizen, Takeshi Kinase, Rikuya Hirai, Kakeru Konnai, Akane Saya, Kazuki Iwaoka, Yoshitaka Shiroma, Hidenao Hasegawa, Naofumi Akata, Masahiro Hosoda, Shinji Tokonami, Yasuhito Igarashi
Summary: The resuspension of Cs-137 is crucial for understanding its behavior in the environment and estimating human exposure. Previous simulations underestimated the resuspension due to incorrect assumptions about the carriers and deposition rates. A new simulation, based on surface concentrations and deposition amounts, showed that the annual resuspension of Cs-137 in 2013 accounted for 0.96% of the initial deposition, with a significant amount of Cs-137 being redeposited. The simulation also revealed the presence of additional resuspension sources in Fukushima city.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Kota Hayashi, Mamoru Tamura, Shiho Tokonami, Takuya Iida
Summary: The study demonstrated low-damage optical condensation by developing a bubble-mimetic substrate, which efficiently assembled bacteria in liquid with high survival rate, expanding the application range of optical condensation in the field of biological science.
OPTICAL MANIPULATION AND STRUCTURED MATERIALS CONFERENCE 2021
(2021)