Article
Plant Sciences
K. Musengi, H. Van der Merwe
Summary: This study compares the findings of population surveys conducted in 2015 and 2021 for the plant species Aloidendron dichotomum. The results suggest that it is not necessary to survey the exact same individuals within a population to determine the general population dynamics, but marking and measuring the same individuals can provide valuable insights into the finer nuances of population demographics and dynamics in this species.
SOUTH AFRICAN JOURNAL OF BOTANY
(2023)
Article
Astronomy & Astrophysics
Ravi Sankrit, Eric Omelian, Uma Gorti, R. Mark Wagner, Steven Goldman, Patricia A. Whitelock
Summary: In this study, we present mid-infrared spectra from our continued monitoring of the symbiotic Mira star R Aquarii. The analysis of the data indicates that the increase in the mid-IR flux is due to a higher dust density, and confirms previous findings that micron-size grains are present.
ASTROPHYSICAL JOURNAL
(2022)
Article
Mathematics
Ben Kane, Sudhir Pujahari
Summary: In this paper, we investigate the moments of Hurwitz class numbers in relation to fixed arithmetic progressions of imaginary quadratic orders. Specifically, we examine the ratio of the 2k-th moment to the zeroeth moment for H(4n - t2) as n varies, where t is fixed in an arithmetic progression t = m (mod M). As a consequence, we obtain asymptotic formulas for moments of the trace t = m (mod M) of Frobenius on elliptic curves over finite fields with pr elements when n = pr.
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY
(2023)
Article
Optics
Yehia Mansour, Yann Battie, Aotmane En Naciri, Nouari Chaoui
Summary: In this Letter, a new approach is proposed to determine the shape distribution of gold nanorods using real-time extinction spectroscopy measurements. The method allows for the extraction of aspect ratio distribution of Au colloids without prior information, and can be applied to monitor the change in nanoparticle shape during laser pulse exposure.
Article
Biophysics
Jaeho Oh, Jisoo Choi, Milad Massoudifarid, Ja Young Park, Jungho Hwang, Jiseok Lim, Jeong Hoon Byeon
Summary: The COVID-19 pandemic has led to extensive research on the rapid detection of bioaerosols. Nanotechnology-based detection strategies are proposed as alternatives due to issues in bioaerosol enrichment and lead time for molecular diagnostics; however, the practical implementation of such techniques is still unclear due to obstacles regarding research and development efforts and validation investments.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Multidisciplinary Sciences
Taeyong Shim, Zhonghyun Kim, Jinho Jung
Summary: This study proposes a framework to determine the threshold of minimum occurrence sites for species distribution models by assessing compliance with Benford's law. The test results show that this method can be a swift and efficient tool for evaluating the reliability of species occurrence datasets.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Chemical
Tuo Yao, Jian Liu, Xuxing Wan, Beibei Li, Sohrab Rohani, Zhenguo Gao, Junbo Gong
Summary: In this study, an in situ image monitoring methodology based on deep-learning model was developed to track the critical quality attributes of solution crystallization process. A 2D population balance model was also developed and validated using the results of the in situ image-based analysis. The accuracy of image analysis was discussed and the potential and challenges of in situ image analysis were proposed.
Article
Chemistry, Analytical
Polina Rud, Sergei Chapek, Pavel Medvedev, Oleg Polozhentsev, Sergey Soldatov, Anton Bagliy, Alexander Guda, Alexander Soldatov, Mikhail Soldatov
Summary: In this study, we designed 3D printed devices for dynamic light scattering (DLS) characterization, which can provide in situ monitoring of size distribution in small sample solutions. This new approach allows for automated microfluidic synthesis and provides feedback for optimization algorithms.
MICROCHEMICAL JOURNAL
(2024)
Article
Computer Science, Information Systems
Seungmin Bang, Hyun-Woo Lee, Bang-Wook Lee
Summary: This paper compares AC and DC partial discharge by monitoring the vacuum degree of a distribution class Vacuum Interrupter (VI) to propose maintenance criteria according to voltage type. The study finds that maintenance should be performed when the vacuum degree is in the range of 10(-3) to 10(-2) torr regardless of the voltage type, and the technology is more useful at AC voltage than at DC voltage.
Article
Engineering, Chemical
Jihyeon Lee, Siqin He, Guanyu Song, Christopher J. Hogan Jr
Summary: The aerosol technique, differential mobility analysis (LNS), is found to be more repeatable and accurate in characterizing CMP slurries compared to dynamic light scattering (DLS). LNS not only captures multimodal size distributions but also provides more precise information on the size distribution of slurry particles.
Article
Engineering, Electrical & Electronic
Jiaxu Duan, Xiaoyan Liu
Summary: This article proposed a fully automatic online PSD monitoring method incorporating a K-means clustering-based haze judgment module, a lightweight U-net segmentation model with the fusion of none-weight VGG16 features (VGG16-LUnet), and a convex-hull detection and ellipse fitting model for adhesive pellet separation and contour fitting. The VGG16-LUnet model can accurately segment the pellets from both hazy and haze-free images with the help of haze judgment module, leading to comparable or even favorable performance to the state-of-the-art methods in terms of PSD monitoring.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Automation & Control Systems
Arya Jyoti Deo, Santosh Kumar Behera, Debi Prasad Das
Summary: An improved lightweight U-Net based CNN model is proposed for online size monitoring of iron ore pellets. The proposed model efficiently detects pellets under various conditions and performs better than other models in terms of accuracy. Experimental validation shows good agreement between the obtained pellet size distribution and manual sieving results.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Woo-Young Song, Seung-Soo Lee, Yong-Jun Kim
Summary: This study introduces a mini-fluidic system for analyzing airborne nanoparticles (NPs) in real time, which can measure the size distribution and effective density of NPs. The sensor is portable and cost-efficient, and its performance is comparable to conventional NP analysis systems in both laboratory and real-world tests.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Physics, Multidisciplinary
Jia-Yi Zhang, Hua-Xing Chen, Huan-Yu Zhang, Xue-Rui Qian, Chun-Hui Zhang, Wang Qin
Summary: In quantum key distribution, sharing the same reference frame is crucial for the system to function properly. The most common method used is real-time calibration of reference frames using classical communication. To eliminate the need for real-time calibration, a reference-frame-independent QKD protocol is proposed. In this work, a passive light source monitoring scheme is presented to monitor the photon-number distribution and improve the security of practical QKD systems.
ACTA PHYSICA SINICA
(2023)
Article
Environmental Sciences
Yuan Ding, Jia Hu, Yingbao Yang, Wenyu Ma, Songxiu Jiang, Xin Pan, Yong Zhang, Jingjing Zhu, Kai Cao
Summary: Effectively monitoring city size in real time through nighttime light remote sensing can provide timely and rapid information for urban development planning. A case study in the Yangtze River Delta region in China shows that the variations in city size follow the rank-size rule, indicating the prominence of medium-small cities and a larger dispersed force compared to concentrated force. The use of urban areas extracted from nighttime light remote sensing instead of population data is validated by comparing the computed city size with statistical data, demonstrating the rationality and applicability of this method.
Article
Plant Sciences
Margaretha W. van Rooyen, Annelise Le Roux, Conrad Geldenhuys, Noel van Rooyen, Nadine L. Broodryk, Helga van der Merwe
APPLIED VEGETATION SCIENCE
(2015)
Article
Plant Sciences
Anaswara Rani, Sneha Asha, Minsa Mini, Pooja P. Rajan, Merin Tomy, Ashita Jose, Xavier Ts, Praveen Kumar
Summary: This study focuses on the eco-friendly synthesis of copper oxide nanoparticles using Centra-therum punctatum leaf extract. The synthesized nanoparticles showed potent antimicrobial activity and effectively inhibited biofilm formation by Pseudomonas aeruginosa. These findings demonstrate the potential of copper oxide nanoparticles for environmentally friendly synthesis and applications.
SOUTH AFRICAN JOURNAL OF BOTANY
(2024)
Article
Plant Sciences
Bruno Fagundes dos Santos, Talita Oliveira de Arauja, Camilla Oliveira Rios, Advanio Inacio Siqueira-Silva, Eduardo Gusmao Pereira
Summary: This study investigated the interaction between iron excess and phosphorus deficiency in Paspalum densum. The results showed that iron excess decreased phosphorus concentration in roots, while phosphorus deficiency increased iron concentration in leaves. Stomatal limitation was the main cause of decreased photosynthesis due to iron excess. Phosphorus deficiency contributed to higher phosphorus use efficiency and biomass.
SOUTH AFRICAN JOURNAL OF BOTANY
(2024)