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Zeitschriftenartikel zum Thema „Ultra-Fast detection“

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Autor: Grafiati

Veröffentlicht am 22. Juni 2024

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1

Schmid, Maximilian, Erdogan Celik, Sepideh Mazloomzadeh, Stefan Aschauer und Heike Soltau. „Optimized Ultra-Fast Low Dose Electron Detection“. Microscopy and Microanalysis 28, S1 (22.07.2022): 2198–99. http://dx.doi.org/10.1017/s1431927622008480.

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2

Wang, Jian, Yuesong Zhang, Fei Zhang, Yazhou Li, Lingcong Nie und Jiale Zhao. „MegaDetectNet: A Fast Object Detection Framework for Ultra-High-Resolution Images“. Electronics 12, Nr. 18 (05.09.2023): 3737. http://dx.doi.org/10.3390/electronics12183737.

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Addressing the challenge of efficiently detecting objects in ultra-high-resolution images during object detection tasks, this paper proposes a novel method called MegaDetectNet, which leverages foreground image for large-scale resolution image object detection. MegaDetectNet utilizes a foreground extraction network to generate a foreground image that highlights target regions, thus avoiding the computationally intensive process of dividing the image into multiple sub-images for detection, and significantly improving the efficiency of object detection. The foreground extraction network in MegaDetectNet is built upon the YOLOv5 model with modifications: the large object detection head and classifier are removed, and the PConv convolution is introduced to reconstruct the C3 module, thereby accelerating the convolution process and enhancing foreground extraction efficiency. Furthermore, a Res2Rep convolutional structure is developed to enlarge the receptive field and improve the accuracy of foreground extraction. Finally, a foreground image construction method is proposed, fusing and stitching foreground target regions into a unified foreground image. This approach replaces multiple divided sub-images with a single foreground image for detection, reducing overhead time. The proposed MegaDetectNet method’s effectiveness for detecting objects in ultra-high-resolution images is validated using the publicly available DOTA dataset. Experimental results demonstrate that MegaDetectNet achieves an average time reduction of 83.8% compared to the sub-image division method among various commonly used object detectors, with only a marginal 8.7% decrease in mAP (mean Average Precision). This validates the practicality and efficacy of the MegaDetectNet method for object detection in ultra-high-resolution images.

3

Brembilla, G., F. Giganti, H. Sidhu, M. Imbriaco, H. U. Ahmed, C. Moore, M. Emberton und S. Punwani. „Ultra-fast biparametric MRI for prostate cancer detection“. European Urology 79 (Juni 2021): S1262. http://dx.doi.org/10.1016/s0302-2838(21)01274-4.

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4

Shin, M. K., G. I. Moon und Y. E. Koo. „Development of ultra-fast detection method for GMOs“. New Biotechnology 44 (Oktober 2018): S78—S79. http://dx.doi.org/10.1016/j.nbt.2018.05.904.

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5

Maceiczyk, Richard M., David Hess, Flora W. Y. Chiu, Stavros Stavrakis und Andrew J. deMello. „Differential detection photothermal spectroscopy: towards ultra-fast and sensitive label-free detection in picoliter & femtoliter droplets“. Lab Chip 17, Nr. 21 (2017): 3654–63. http://dx.doi.org/10.1039/c7lc00946a.

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6

Liu, LinYue, XiaoPing Ouyang, ZhongBing Zhang, JianFu Zhang, XianPeng Zhang, YunHong Zhong und Wei Wang. „Polycrystalline chemical-vapor-deposited diamond for fast and ultra-fast neutron detection“. Science China Technological Sciences 55, Nr. 9 (29.06.2012): 2640–45. http://dx.doi.org/10.1007/s11431-012-4948-9.

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7

Waldeck, Stephan, Rania Helal, Ibraheem Al-Dhamari, Sandra Schmidt, Christian von Falck, René Chapot, Marc Brockmann und Daniel Overhoff. „New ultra-fast algorithm for cochlear implant misalignment detection“. European Journal of Radiology 151 (Juni 2022): 110283. http://dx.doi.org/10.1016/j.ejrad.2022.110283.

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8

Dey, Sayan, Sumita Santra, Anupam Midya, Prasanta Kumar Guha und Samit Kumar Ray. „Synthesis of CuxNi(1−x)O coral-like nanostructures and their application in the design of a reusable toxic heavy metal ion sensor based on an adsorption-mediated electrochemical technique“. Environmental Science: Nano 4, Nr. 1 (2017): 191–202. http://dx.doi.org/10.1039/c6en00285d.

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9

Qi, Yun, Yan Zhao, Haihong Bao, Wei Jin und Hoi Lut Ho. „Nanofiber enhanced stimulated Raman spectroscopy for ultra-fast, ultra-sensitive hydrogen detection with ultra-wide dynamic range“. Optica 6, Nr. 5 (30.04.2019): 570. http://dx.doi.org/10.1364/optica.6.000570.

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10

Seel, Matthias, Eberhard Wildermuth und Wolfgang Zinth. „A multichannel detection system for application in ultra-fast spectroscopy“. Measurement Science and Technology 8, Nr. 4 (01.04.1997): 449–52. http://dx.doi.org/10.1088/0957-0233/8/4/014.

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11

Liu, Jun, Guyue Zhang, Ye Liu, Luchao Tian und Yan Qiu Chen. „An ultra-fast human detection method for color-depth camera“. Journal of Visual Communication and Image Representation 31 (August 2015): 177–85. http://dx.doi.org/10.1016/j.jvcir.2015.06.014.

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12

Takanashi, Naoto, Asuka Inoue, Takahiro Kashiwazaki, Takushi Kazama, Koji Enbutsu, Ryoichi Kasahara, Takeshi Umeki und Akira Furusawa. „All-optical phase-sensitive detection for ultra-fast quantum computation“. Optics Express 28, Nr. 23 (03.11.2020): 34916. http://dx.doi.org/10.1364/oe.405832.

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13

Hsu, Chia-Hao, Chung-Chieh Chang, Chuan-Ming Tseng, Chih-Chieh Chan, Wei-Hsiang Chao, Yu-Ruei Wu, Min-Hsueh Wen et al. „An ultra-fast response gasochromic device for hydrogen gas detection“. Sensors and Actuators B: Chemical 186 (September 2013): 193–98. http://dx.doi.org/10.1016/j.snb.2013.06.004.

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14

Yang, Zhuo, Jiali Zhang, Xin Tong, Wenbing Li, Lijuan Liang, Bo Liu und Chang Chen. „Simulation of Rapid Thermal Cycle for Ultra-Fast PCR“. Sensors 22, Nr. 24 (18.12.2022): 9990. http://dx.doi.org/10.3390/s22249990.

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The polymerase chain reaction (PCR) technology is a mainstream detection method used in medical diagnoses, environmental monitoring, food hygiene, and safety. However, the systematic analysis of a compact structure with fast temperature changes for an ultra-fast PCR device that is convenient for on-site detection still lacks investigation. To overcome the problems of low heating efficiency and non-portability of PCR devices currently used, a miniaturized PCR system based on a microfluidic chip, i.e., lab-on-chip technology, has been proposed. The main objective of this paper is to explore the feasibility of using a heat resistor that can reach a fast heating rate and temperature uniformity combined with air cooling technology for rapid cooling and to investigate the influences of various pattern designs and thicknesses of the resistor on heating rates and temperature uniformity. Additionally, a PCR chip made of various materials with different thermal properties, such as surface emissivity, thermal conductivity, mass density, and heat capacity at constant pressure is analyzed. In addition to the heat loss caused by the natural convection of air, the radiation loss of the simulation object is also considered, which makes the model much closer to the practical situation. Our research results provide a considerable reference for the design of the heating and cooling modules used in the ultra-fast PCR protocol, which has great potential in In Vitro Diagnosis (IVD) and the PCR detection of foodborne pathogens and bacteria.

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Kocon, Michał, Marcin Malesa und Jerzy Rapcewicz. „Ultra-Lightweight Fast Anomaly Detectors for Industrial Applications“. Sensors 24, Nr. 1 (27.12.2023): 161. http://dx.doi.org/10.3390/s24010161.

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Quality inspection in the pharmaceutical and food industry is crucial to ensure that products are safe for the customers. Among the properties that are controlled in the production process are chemical composition, the content of the active substances, and visual appearance. Although the latter may not influence the product’s properties, it lowers customers’ confidence in drugs or food and affects brand perception. The visual appearance of the consumer goods is typically inspected during the packaging process using machine vision quality inspection systems. In line with the current trends, the processing of the images is often supported with deep neural networks, which increases the accuracy of detection and classification of faults. Solutions based on AI are best suited to production lines with a limited number of formats or highly repeatable production. In the case where formats differ significantly from each other and are often being changed, a quality inspection system has to enable fast training. In this paper, we present a fast method for image anomaly detection that is used in high-speed production lines. The proposed method meets these requirements: It is easy and fast to train, even on devices with limited computing power. The inference time for each production sample is sufficient for real-time scenarios. Additionally, the ultra-lightweight algorithm can be easily adapted to different products and different market segments. In this work, we present the results of our algorithm on three different real production data gathered from food and pharmaceutical industries.

16

Bel Hadj Ali, Insaf, Yusr Saadi-Ben Aoun, Zeineb Hammami, Oumayma Rhouma, Ahmed Sahbi Chakroun und Ikram Guizani. „Handheld Ultra-Fast Duplex Polymerase Chain Reaction Assays and Lateral Flow Detection and Identification of Leishmania Parasites for Cutaneous Leishmaniases Diagnosis“. Pathogens 12, Nr. 11 (28.10.2023): 1292. http://dx.doi.org/10.3390/pathogens12111292.

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Early and accurate detection of infectious diseases is a key step for surveillance, epidemiology and control, notably timely disease diagnosis, patient management and follow-up. In this study, we aimed to develop handheld ultra-fast duplex PCR assays coupled to amplicon detection by lateral flow (LF) immunoassay to deliver a rapid and simple molecular diagnostic test for concomitant detection and identification of the main Leishmania parasites encountered in Tunisia. We selected two DNA targets to amplify L. major/L. tropica and L. infantum/L. tropica groups of species DNAs, respectively. We optimized the experimental conditions of a duplex ultra-fast PCR. The amplification is performed using a portable Palm convection PCR machine within 18 min, and the products are detected using an LF cassette within 10 min. The test allows the identification of the infecting species according to the position and number of test lines revealed. Tested on a selection of DNAs of representative Leishmania strains of the three studied species (N = 37), the ultra-fast duplex PCR–LF showed consistent, stable and reproducible results. The analytical limit of detection of the test was 0.4 pg for L. major, 4 pg for L. infantum and 40 pg for L. tropica.

17

Han, Rui, Fei Wang, Wanping Chen und Lixin Ma. „A Fast and Sensitive One-Tube SARS-CoV-2 Detection Platform Based on RTX-PCR and Pyrococcus furiosus Argonaute“. Biosensors 14, Nr. 5 (13.05.2024): 245. http://dx.doi.org/10.3390/bios14050245.

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Since SARS-CoV-2 is a highly transmissible virus, alternative reliable, fast, and cost-effective methods are still needed to prevent virus spread that can be applied in the laboratory and for point-of-care testing. Reverse transcription real-time fluorescence quantitative PCR (RT-qPCR) is currently the gold criteria for detecting RNA viruses, which requires reverse transcriptase to reverse transcribe viral RNA into cDNA, and fluorescence quantitative PCR detection was subsequently performed. The frequently used reverse transcriptase is thermolabile; the detection process is composed of two steps: the reverse transcription reaction at a relatively low temperature, and the qPCR performed at a relatively high temperature, moreover, the RNA to be detected needs to pretreated if they had advanced structure. Here, we develop a fast and sensitive one-tube SARS-CoV-2 detection platform based on Ultra-fast RTX-PCR and Pyrococcus furiosus Argonaute-mediated Nucleic acid Detection (PAND) technology (URPAND). URPAND was achieved ultra-fast RTX-PCR process based on a thermostable RTX (exo-) with both reverse transcriptase and DNA polymerase activity. The URPAND can be completed RT-PCR and PAND to detect nucleic acid in one tube within 30 min. This method can specifically detect SARS-CoV-2 with a low detection limit of 100 copies/mL. The diagnostic results of clinical samples with one-tube URPAND displayed 100% consistence with RT-qPCR test. Moreover, URPAND was also applied to identify SARS-CoV-2 D614G mutant due to its single-nucleotide specificity. The URPAND platform is rapid, accurate, tube closed, one-tube, easy-to-operate and free of large instruments, which provides a new strategy to the detection of SARS-CoV-2 and other RNA viruses.

18

Xi, Bangchao, Shaolei Huang, Yiquan An, Xianglian Gong, Jiayu Yang, Juntian Zeng, Shengxiang Ge und Dongxu Zhang. „Sophisticated and precise: design and implementation of a real-time optical detection system for ultra-fast PCR“. RSC Advances 13, Nr. 29 (2023): 19770–81. http://dx.doi.org/10.1039/d3ra03363e.

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19

Lv, Handi, Qi Guan, Ying Wang und Xiaoli Zhang. „Mechanical power driven SPME-SERS ultra-fast detection of illegal additives in aquaculture water“. RSC Advances 11, Nr. 21 (2021): 12893–901. http://dx.doi.org/10.1039/d0ra10227j.

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A strategy combining mechanical power and integration of SPME-SERS detection based on a dual-function porous silver fiber was used to realize ultra-fast detection of illegal additives in aquaculture water (within 1 minute).

20

Yin, YanYang, Feng Li, Nan Zhang, Shengping Ruan, Haifeng Zhang und Yu Chen. „Improved gas sensing properties of silver-functionalized ZnSnO3 hollow nanocubes“. Inorganic Chemistry Frontiers 5, Nr. 9 (2018): 2123–31. http://dx.doi.org/10.1039/c8qi00470f.

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21

Cao, Gaihua, Yifan Xiong, Yue Qiu, Jun Yang, Yu Wang, Fuping Nie, Danqun Huo und Changjun Hou. „Field-friendly and ultra-fast detection platform without nucleic acid extraction for virus detection“. Analytica Chimica Acta 1280 (November 2023): 341865. http://dx.doi.org/10.1016/j.aca.2023.341865.

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22

Zhai, Chengbo, Yi Liu, Liyong Du, Dongxue Wang und Mingzhe Zhang. „Novel malonic acid assisted synthesized porous Fe2O3 microspheres for ultra-fast response and recovery toward triethylamine“. New Journal of Chemistry 44, Nr. 15 (2020): 5929–36. http://dx.doi.org/10.1039/d0nj00070a.

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23

Zhao, Xiaoli, Qianyi Wan, Jian Zhang, Yake Duan, Yong Li, Jingrong Ma, Chao Shi und Cuiping Ma. „Single-tube analysis for ultra-fast and visual detection of Salmonella“. Analytical and Bioanalytical Chemistry 414, Nr. 7 (25.01.2022): 2333–41. http://dx.doi.org/10.1007/s00216-022-03904-z.

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24

Alquaity, Awad B. S., Et-touhami Es-sebbar und Aamir Farooq. „Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy“. Optics Express 23, Nr. 6 (10.03.2015): 7217. http://dx.doi.org/10.1364/oe.23.007217.

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25

Zhou, Qin, Allen Sussman, Jiyoung Chang, Jeffrey Dong, Alex Zettl und William Mickelson. „Fast response integrated MEMS microheaters for ultra low power gas detection“. Sensors and Actuators A: Physical 223 (März 2015): 67–75. http://dx.doi.org/10.1016/j.sna.2014.12.005.

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26

Cai, Xintian, Zhen Wang, Chaoyue Ji, Xuan Wang, Zhiyin Gan und Sheng Liu. „Control of the Longitudinal Compression and Transverse Focus of Ultrafast Electron Beam for Detecting the Transient Evolution of Materials“. Materials 15, Nr. 2 (13.01.2022): 571. http://dx.doi.org/10.3390/ma15020571.

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Ultrafast detection is an effective method to reveal the transient evolution mechanism of materials. Compared with ultra-fast X-ray diffraction (XRD), the ultra-fast electron beam is increasingly adopted because the larger scattering cross-section is less harmful to the sample. The keV single-shot ultra-fast electron imaging system has been widely used with its compact structure and easy integration. To achieve both the single pulse imaging and the ultra-high temporal resolution, magnetic lenses are typically used for transverse focus to increase signal strength, while radio frequency (RF) cavities are generally utilized for longitudinal compression to improve temporal resolution. However, the detection signal is relatively weak due to the Coulomb force between electrons. Moreover, the effect of RF compression on the transverse focus is usually ignored. We established a particle tracking model to simulate the electron pulse propagation based on the 1-D fluid equation and the 2-D mean-field equation. Under considering the relativity effect and Coulomb force, the impact of RF compression on the transverse focus was studied by solving the fifth-order Rung–Kutta equation. The results show that the RF cavity is not only a key component of longitudinal compression but also affects the transverse focusing. While the effect of transverse focus on longitudinal duration is negligible. By adjusting the position and compression strength of the RF cavity, the beam spot radius can be reduced from 100 μm to 30 μm under the simulation conditions in this paper. When the number of single pulse electrons remains constant, the electrons density incident on the sample could be increased from 3.18×1012 m−2 to 3.54×1013 m−2, which is 11 times the original. The larger the electron density incident on the sample, the greater the signal intensity, which is more conducive to detecting the transient evolution of the material.

27

Igo, Z., M. L. Parker, G. A. Matzeu, W. Alston, N. Alvarez Crespo, F. Fürst, D. J. K. Buisson et al. „Searching for ultra-fast outflows in AGN using variability spectra“. Monthly Notices of the Royal Astronomical Society 493, Nr. 1 (28.01.2020): 1088–108. http://dx.doi.org/10.1093/mnras/staa265.

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ABSTRACT We present a qualitative search for ultra-fast outflows (UFOs) in excess variance spectra of radio-quiet active galactic nuclei (AGNs). We analyse 42 sources from the spectroscopic UFO detection sample, and an additional 22 different sources from the variability sample. A total of 58 sources have sufficient observational data from XMM–Newton EPIC-pn and variability for an excess variance spectrum to be calculated. We examine these spectra for peaks corresponding to variable blue-shifted H- and He-like ion absorption lines from UFOs. We find good evidence for such outflows in 28 per cent of the AGN sample and weak evidence in a further 31 per cent, meaning that ∼30–60 per cent of the AGN sample hosts such UFOs. The mean and median blue-shifted velocity is found to be ∼0.14c and 0.12c, respectively. Current variability methods allow for a fast, model-independent determination of UFOs; however, further work needs to be undertaken to better characterize the statistical significance of the peaks in these spectra by more rigorous modelling. Detecting good evidence for variable UFO lines in a large number of sources also lays the groundwork for detailed analysis of the variability time-scales of the absorbers. This will allow us to probe their densities and hence distances from the central supermassive black hole.

28

Wang, Yijie, Di Liu, Jianbo Yin, Yanxue Shang, Juan Du, Zixi Kang, Rongming Wang, Yanli Chen, Daofeng Sun und Jianzhuang Jiang. „An ultrafast responsive NO2 gas sensor based on a hydrogen-bonded organic framework material“. Chemical Communications 56, Nr. 5 (2020): 703–6. http://dx.doi.org/10.1039/c9cc09171h.

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29

García-Carmona, Laura, Daniel Rojas, María Cristina González und Alberto Escarpa. „Correction: Microchip in situ electrosynthesis of silver metallic oxide clusters for ultra-FAST detection of galactose in galactosemic newborns’ urine samples“. Analyst 142, Nr. 19 (2017): 3758. http://dx.doi.org/10.1039/c7an90072d.

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Correction for ‘Microchip in situ electrosynthesis of silver metallic oxide clusters for ultra-FAST detection of galactose in galactosemic newborns’ urine samples by Laura García-Carmona et al., Analyst, 2016, 141, 6002–6007.

30

Lim, H., S. Ahmad, P. Barrillon, S. Blin-Bondil, S. Brandt, C. Budtz-Jørgensen, A. J. Castro-Tirado et al. „The Ultra-Fast Flash Observatory's space GRB mission and science“. Proceedings of the International Astronomical Union 7, S279 (April 2011): 349–50. http://dx.doi.org/10.1017/s1743921312013294.

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AbstractThe Ultra-Fast Flash Observatory (UFFO) is a space mission to detect the early moments of an explosion from Gamma-ray bursts (GRBs), thus enhancing our understanding of the GRB mechanism. It consists of the UFFO Burst & Trigger telescope (UBAT) for the recognition of GRB positions using hard X-ray from GRBs. It also contains the Slewing Mirror Telescope (SMT) for the fast detection of UV-optical photons from GRBs. It is designed to begin the UV-optical observations in less than a few seconds after the trigger. The UBAT is based on a coded-mask X-ray camera with a wide field of view (FOV) and is composed of the coded mask, a hopper and a detector module. The SMT has a fast rotatable mirror which allows a fast UV-optical detection after the trigger. The telescope is a modified Ritchey-Chrétien telescope with the aperture size of 10 cm diameter, and an image intensifier readout by CCD. The UFFO pathfinder is scheduled to launch into orbit on 2012 June by the Lomonosov spacecraft. It is a scaled-down version of UFFO in order to make the first systematic study of early UV/optical light curves, including the rise phase of GRBs. We expect UBAT to trigger ~44 GRBs/yr and expect SMT to detect ~10 GRBs/yr.

31

Xu, Congdi, Peng Liu, Chuang Feng, Zhicai He und Yong Cao. „Organic photodetectors with high detectivity for broadband detection covering UV-vis-NIR“. Journal of Materials Chemistry C 10, Nr. 15 (2022): 5787–96. http://dx.doi.org/10.1039/d2tc00525e.

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OPDs with ultra-low dark current density and high detectivity are developed via interfacial and morphological modifications in the ternary device. A highest D* at 1060 nm exceeding 8.2 × 1012 Jones is achieved with fast response and wide LDR.

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Zheng, Ningchong, Xiaofeng Li, Shen Yan, Qian Wang, Rui Qiao, Junhua Hu, Jiajie Fan, Guoqin Cao und Guosheng Shao. „Nano-porous hollow Li0.5La0.5TiO3 spheres and electronic structure modulation for ultra-fast H2S detection“. Journal of Materials Chemistry A 8, Nr. 5 (2020): 2376–86. http://dx.doi.org/10.1039/c9ta10482h.

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33

Xin, Yunhong, Gang He, Qi Wang und Yu Fang. „A portable fluorescence detector for fast ultra trace detection of explosive vapors“. Review of Scientific Instruments 82, Nr. 10 (Oktober 2011): 103102. http://dx.doi.org/10.1063/1.3642661.

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34

Czauderna, M., und J. Kowalczyk. „ Simple, selective, and sensitive measurement of urea in body fluids of mammals by reversed-phase ultra-fast liquid chromatography“. Czech Journal of Animal Science 57, No. 1 (27.01.2012): 19–27. http://dx.doi.org/10.17221/5480-cjas.

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Ultra-fast liquid chromatography with a photodiode array detector for simple and rapid determination of urea in body fluids of farm animals is described. Blood plasma, milk, and urine samples are treated with trichloroacetic acid and then centrifuged. Supernatants are derivatized at room temperature using p-dimethylaminobenzaldehyde. Samples are separated using a ternary gradient of methanol in buffer and water. Derivatized urea in standards and biological samples is analyzed using a Phenomenex C<sub>18</sub>-column (Synergi 2.5 µm, Hydro-RP, 100Å, 100 × 2 mm). The photodiode detector is set to 370 and/or 254 nm for detection. Temperature is maintained at 27°C by a column heater. Clear separation of derivatized urea from the endogenous species present in assayed biological samples was achieved in less than 6 min. The urea adduct peak eluted at 4.36 ± 0.05 min. Average recoveries of the urea standards added to assayed biological materials were satisfactory (i.e. 100.2 ± 4.1%). Our chromatographic method with photodiode detection at 370 nm and at 254 nm, in particular, offers low detection (L<sub>D</sub>) and quantification limits (L<sub>Q</sub>) (<sup>370nm</sup>L<sub>D</sub> = 0.47 ng, <sup>254nm</sup>L<sub>D</sub> = 0.027 ng and <sup>370nm</sup>L<sub>Q</sub> = 1.41 ng, <sup>254nm</sup>L<sub>Q</sub> = 0.080 ng, respectively). Our liquid chromato-graphy based on detection at 370 nm is the most versatile analytical tool that assures sensitive, accurate, and precise analysis of urea in urine, milk, and plasma samples, and selected diets for mammals. The presented chromatographic procedure is especially suitable for preparation of reference sample sets, very accurate and precise research purposes or rapid clinical diagnostic with smaller sample sets. Urea in urine can be also determined using our liquid chromatography with detection at 254 nm. Detection of urine urea at 254 nm is more sensitive and precise compared with monitoring at 370 nm. Our chromatographic method based on photodiode detection at 370 nm and especially at 254 nm is suitable for the non-invasive analysis of urea in only urine of humans and animals.    

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Matatagui, Daniel, Ágatha Bastida und M. Carmen Horrillo. „Novel SH-SAW Biosensors for Ultra-Fast Recognition of Growth Factors“. Biosensors 12, Nr. 1 (30.12.2021): 17. http://dx.doi.org/10.3390/bios12010017.

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In this study, we investigated a label-free time efficient biosensor to recognize growth factors (GF) in real time, which are of gran interesting in the regulation of cell division and tissue proliferation. The sensor is based on a system of shear horizontal surface acoustic wave (SH-SAW) immunosensor combined with a microfluidic chip, which detects GF samples in a dynamic mode. In order to prove this method, to our knowledge not previously used for this type of compounds, two different GFs were tested by two immunoreactions: neurotrophin-3 and fibroblast growth factor-2 using its polyclonal antibodies. GF detection was conducted via an enhanced sequential workflow to improve total test time of the immunoassay, which shows that this type of biosensor is a very promising method for ultra-fast recognition of these biomolecules due to its great advantages: portability, simplicity of use, reusability, low cost, and detection within a relatively short period of time. Finally, the biosensor is able to detect FGF-2 growth factor in a concentration wide range, from 1–25 µg/mL, for a total test time of ~15 min with a LOD of 130 ng/mL.

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Kučerová, Kateřina, Veronika Reiská, František Švec, Lenka Kujovská Krčmová und Ludmila Matysová. „Fast determination of omeprazole in extemporaneous suspensions used in paediatrics and stability studies“. Analytical Methods 11, Nr. 4 (2019): 517–23. http://dx.doi.org/10.1039/c8ay02547a.

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A simple and fast ultra-high-performance liquid chromatography method with UV detection for the separation and quantification of omeprazole and the impurities of omeprazole and methylparaben (the internal standard) in six extemporaneous suspensions has been developed and fully validated.

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Ramanujam, Ashwin, Sharilyn Almodovar und Gerardine G. Botte. „Ultra-Fast Electrochemical Sensor for Point-of-Care COVID-19 Diagnosis Using Non-Invasive Saliva Sampling“. Processes 9, Nr. 7 (17.07.2021): 1236. http://dx.doi.org/10.3390/pr9071236.

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Point-of-care diagnostic devices that are rapid and reliable remain as an unmet need highlighted by the coronavirus disease (COVID-19) pandemic crisis. The second/third wave of virus spread in various parts of the world combined with new evidence of re-infections and inadequate healthcare facilities demand increased testing rate to diagnose COVID-19 at its core. Although traditional molecular diagnostic tests have served this purpose, there have been shortage of reagents and other supplies at pandemic frontlines. This calls for novel alternate diagnostic processes with potential for obtaining emergency use authorization and that can be deployed in the field at the earliest opportunity. Here, we show an ultra-fast SARS-CoV-2 detection sensor for detecting coronavirus proteins in saliva within 100 milliseconds. Electrochemical oxidation of nickel hydroxide has been controlled using cyclic voltammetry and chronoamperometry techniques for successful detection of SARS-CoV-2. Test results have proven the capability of sensors to quantitatively detect the concentration of virus in blinded analyses. The detection occurs by a process similar to that of SARS-CoV-2 binding onto host cells. The sensor also shows prospects in distinguishing SARS-CoV-2 from other viruses such as HIV. More importantly, the sensor matches the detection limit of the gold standard test for diagnosing early infection. The use of saliva as a non-invasive sampling technique combined with the portability of the instrument has broadened the potential of this sensor.

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Hossain, Md Mahbub, und Muhammad Anisuzzaman Talukder. „Graphene surface plasmon sensor for ultra-low-level SARS-CoV-2 detection“. PLOS ONE 18, Nr. 4 (25.04.2023): e0284812. http://dx.doi.org/10.1371/journal.pone.0284812.

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Precisely detecting the ultra-low-level severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is crucial. The detection mechanism must be sensitive, low-cost, portable, fast, and easy to operate to tackle coronavirus disease 19 (COVID-19). This work proposes a sensor exploiting graphene surface plasmon resonance to detect SARS-CoV-2. The graphene layer functionalized with angiotensin-converting enzyme 2 (ACE2) antibodies will help efficient adsorption of the SARS-CoV-2. In addition to the graphene layer, ultra-thin layers of novel two-dimensional materials tungsten disulfide (WS2), potassium niobate (KNbO3), and black phosphorus (BP) or blue phosphorus (BlueP) used in the proposed sensor will increase the light absorption to detect an ultra-low SARS-CoV-2 concentration. The analysis presented in this work shows that the proposed sensor will detect SARS-CoV-2 as small as ∼1 fM. The proposed sensor also offers a minimum sensitivity of 201 degrees/RIU, a figure-of-merit of 140 RIU−1, and enhanced binding kinetics of the SARS-CoV-2 to the sensor surface.

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Uhd, Jesper, Laura Miotke, Hanlee P. Ji, Marina Dunaeva, Ger J. M. Pruijn, Christian Damsgaard Jørgensen, Emil Laust Kristoffersen et al. „Ultra-fast detection and quantification of nucleic acids by amplification-free fluorescence assay“. Analyst 145, Nr. 17 (2020): 5836–44. http://dx.doi.org/10.1039/d0an00676a.

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40

Álvarez-Merino, Carlos S., Emil J. Khatib, Hao Qiang Luo-Chen und Raquel Barco. „Victim Detection and Localization in Emergencies“. Sensors 22, Nr. 21 (02.11.2022): 8433. http://dx.doi.org/10.3390/s22218433.

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Detecting and locating victims in emergency scenarios comprise one of the most powerful tools to save lives. Fast actions are crucial for victims because time is running against them. Radio devices are currently omnipresent within the physical proximity of most people and allow locating buried victims in catastrophic scenarios. In this work, we present the benefits of using WiFi Fine Time Measurement (FTM), Ultra-Wide Band (UWB), and fusion technologies to locate victims under rubble. Integrating WiFi FTM and UWB in a drone may cover vast areas in a short time. Moreover, the detection capacity of WiFi and UWB for finding individuals is also compared. These findings are then used to propose a method for detecting and locating victims in disaster scenarios.

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Ma, Zhenyu, Haili Yu, Kai Cui, Yang Yu und Chen Tao. „Design and Study of a Two-Dimensional (2D) All-Optical Spatial Mapping Module“. Sensors 24, Nr. 7 (30.03.2024): 2219. http://dx.doi.org/10.3390/s24072219.

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Sequentially timed all-optical mapping photography is one of the main emerging ultra-fast detection technologies that can be widely applicable to ultra-fast detection at the picosecond level in fields such as materials and life sciences. We propose a new optical structure for an all-optical spatial mapping module that can control the optical field of two-dimensional imaging while improving spectral resolution and detector sensor utilization. The model of optical parameters based on geometrical optics theory for the given structure has been established, and the theoretical analysis of the inter-frame energy crosstalk caused by incident beam spot width, chromatic aberration, and main errors of the periscope array has been conducted. The optical design of the two-dimensional (2D) all-optical spatial mapping module was finally completed using ZEMAX OpticStudio 2018 software. The results show that our optical module can realize targets of 16 frames and 1.25 nm spectral resolution.

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Zhao, Xiaoyu, Mengyuan Zhang und Zhenghua Zhang. „Ultra-fast microwave-assisted synthesis of photoluminescent carbon dots with an ultra-high quantum yield for H2O2 detection“. Journal of Environmental Chemical Engineering 10, Nr. 6 (Dezember 2022): 109008. http://dx.doi.org/10.1016/j.jece.2022.109008.

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Mulero, Rafael, Dong Heun Lee, Michele Kutzler, Jeffrey Jacobson und Min Jun Kim. „Ultra-Fast Low Concentration Detection of Candida Pathogens Utilizing High Resolution Micropore Chips“. Sensors 9, Nr. 3 (09.03.2009): 1590–98. http://dx.doi.org/10.3390/s90301590.

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Raimondi, Daniele, Gabriele Orlando, Yves Moreau und Wim F. Vranken. „Ultra-fast global homology detection with Discrete Cosine Transform and Dynamic Time Warping“. Bioinformatics 34, Nr. 18 (19.04.2018): 3118–25. http://dx.doi.org/10.1093/bioinformatics/bty309.

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Ramirez, Cesar E., Marcela Nouzova, Paolo Benigni, J. Martin E. Quirke, Fernando G. Noriega und Francisco Fernandez-Lima. „Fast, ultra-trace detection of juvenile hormone III from mosquitoes using mass spectrometry“. Talanta 159 (Oktober 2016): 371–78. http://dx.doi.org/10.1016/j.talanta.2016.06.041.

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Nagareddy, Venkata Karthik, Hua Khee Chan, Sandra C. Hernandez, Virginia D. Wheeler, Luke O. Nyakiti, Rachael L. Myers-Ward, Charles R. Eddy et al. „Improved Chemical Detection and Ultra-Fast Recovery Using Oxygen Functionalized Epitaxial Graphene Sensors“. IEEE Sensors Journal 13, Nr. 8 (August 2013): 2810–17. http://dx.doi.org/10.1109/jsen.2013.2259154.

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Feng, Yuan-Hua, Xing Lu, Lu Song, Xiaojie Guo, Yawei Wang, Linyan Zhu, Qi Sui, Jianping Li, Kebin Shi und Zhaohui Li. „Optical digital coherent detection technology enabled flexible and ultra-fast quantitative phase imaging“. Optics Express 24, Nr. 15 (20.07.2016): 17159. http://dx.doi.org/10.1364/oe.24.017159.

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48

Varpula, Aapo, Kestutis Grigoras, Kirsi Tappura, Andrey V. Timofeev, Andrey Shchepetov, Juha Hassel, Jouni Ahopelto und Mika Prunnila. „Silicon Based Nano-Thermoelectric Bolometers for Infrared Detection“. Proceedings 2, Nr. 13 (06.12.2018): 894. http://dx.doi.org/10.3390/proceedings2130894.

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The state-of-the-art infrared (IR) detection uses quantum photodetectors and bolometers. Quantum IR photodetectors are expensive and require cooling, and exotic and toxic materials. Whereas, bolometers are cost-efficient and uncooled, but they are much slower and less sensitive. Recently we have demonstrated that ultra-thin, highly-doped silicon membranes can be used to build fast and highly-sensitive thermoelectric bolometers. We present the fabrication of these devices, electro-thermal characterization results, and estimate the full potential of this technology.

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Sheng, Wenlong, Yamin Yu, Na Gao, Meng Jin, Lizhen Wang, Ning Li, Can Li, Huili Zhang, Yun Zhang und Kechun Liu. „An ultrasensitive ratiometric fluorescent probe for the detection of Hg2+ and its application in cell and zebrafish“. Analytical Methods 13, Nr. 8 (2021): 1043–48. http://dx.doi.org/10.1039/d1ay00063b.

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A water-soluble ratiometric fluorescent probe CP-Hg with ultra-fast response, high specificity and sensitivity to detect Hg²⁺ was characterized. CP-Hg with good biocompatibility has been applied to detect Hg²⁺ in water samples, cells and zebrafish.

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Liang, Qin-Hong, Ban-Peng Cao, Qiang Xiao und Dacheng Wei. „The Application of Graphene Field-Effect Transistor Biosensors in COVID-19 Detection Technology: A Review“. Sensors 23, Nr. 21 (27.10.2023): 8764. http://dx.doi.org/10.3390/s23218764.

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Coronavirus disease 2019 (COVID-19) is a disease caused by the infectious agent of severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2). The primary method of diagnosing SARS-CoV-2 is nucleic acid detection, but this method requires specialized equipment and is time consuming. Therefore, a sensitive, simple, rapid, and low-cost diagnostic test is needed. Graphene field-effect transistor (GFET) biosensors have become the most promising diagnostic technology for detecting SARS-CoV-2 due to their advantages of high sensitivity, fast-detection speed, label-free operation, and low detection limit. This review mainly focus on three types of GFET biosensors to detect SARS-CoV-2. GFET biosensors can quickly identify SARS-CoV-2 within ultra-low detection limits. Finally, we will outline the pros and cons of the diagnostic approaches as well as future directions.