Article
Physics, Multidisciplinary
Weijie Ding, Meixuan Li, Fang Liang, Yan Gao, Wei Qin, Hong Zhang
Summary: To improve assembly automation, an online assembly calibration system was designed using laser scanning and optical fiber sensors. The system uses the optical fiber sensing module to obtain stress field information and the laser scanning module to obtain point cloud information of the assembly structure. By compensating for the position offset caused by the stress field, the system improves the accuracy of target reconstruction. The system has good applicability in factories with large environmental interference and can expand the application field of intelligent assembly.
FRONTIERS IN PHYSICS
(2023)
Article
Environmental Sciences
Juan I. I. Gargiulo, Nicolas A. A. Lyons, Fernando Masia, Peter Beale, Juan R. R. Insua, Martin Correa-Luna, Sergio C. C. Garcia
Summary: Systematic measurement of pasture biomass is crucial for optimizing pasture utilization and increasing dairy farm profitability. This study evaluated the use of various sensors such as the rising plate meter, pasture reader, unmanned aerial vehicles, and satellites as pasture monitoring tools. Calibration methods were tested to improve the accuracy of estimations and facilitate on-farm implementation. The results suggest that indirect calibration using UAV and satellite-derived reflectance indices, along with height measurements, can convert height measurements into pasture biomass.
Article
Biochemistry & Molecular Biology
Malgorzata Golab, Michal Wozniakiewicz, Pawel M. Nowak, Pawel Koscielniak
Summary: The novel AHMT technique provides an automated way to prepare calibration solutions for CE-based quantitative analysis, reducing manual operation and minimizing the risk of errors. Comparison with the standard manual pipetting procedure showed that AHMT results in more consistent calibration curves with significantly reduced volume and potential errors in the obtained solutions. The application of SCIEX(R) nanoVials further enhances the effectiveness of AHMT by decreasing the actual volume of calibration solutions.
Article
Environmental Sciences
Stefanie A. Busgang, Syam S. Andra, Paul Curtin, Elena Colicino, Matthew J. Mazzella, Moira Bixby, Alison P. Sanders, John D. Meeker, Marissa Hauptman, Shirisha Yelamanchili, Wanda Phipatanakul, Chris Gennings
Summary: Environmental research often relies on urinary biomarkers which require dilution correction to accurately measure exposures. Specific gravity (SG) and creatinine (UCr) are commonly measured urinary dilution factors. Epidemiologic studies may assess only one of these measures, making it difficult to pool studies that may otherwise be able to be combined.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemical Research Methods
Kenia Chavez Ramos, Maria del Pilar Canizares Macias
Summary: This study developed an innovative microdevice for on-line whole blood dilution with a phosphate buffer solution (PBS) and separation of plasma. The microdevice, utilizing unique design and manufacturing techniques, demonstrated high purity and efficiency in separating plasma.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Yong Yu, Ji-Cheng Li, Hai Lin, Kai Li, Fu-ting Yi
Summary: The performance of alternating current electroosmosis (ACEO) in ethanol solutions containing different electrolytes was investigated using asymmetric microelectrode arrays and traveling-wave microelectrode arrays in microchannels. The results showed that stable and intense ACEO flow was observed only in ethanol solutions containing KOH and CH3COONH4, with optimal flow rates achieved at specific solution conductivities and AC frequencies. Furthermore, no damage was observed on the microelectrodes after the experiments.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Environmental Sciences
Xinan Yue, Fanyu Liu, Junyi Wang, Yonghui Wang, Yihui Cai, Feng Ding, Baiqi Ning, Mingyuan Li, Ning Zhang, Zhongqiu Wang, Su Xu
Summary: In this study, ion line calibration was conducted based on experiments with the newly built SYISR. The calibration factor was obtained by simultaneous measurements of plasma line and ion line electron density, and it significantly improved the agreement between ion line f(o)F(2) and ionosonde results. The deviations after calibration might be caused by uncertainties in the calibration factor or ionosonde measurements. The plasma line calibration technique is expected to be enhanced with the upcoming completion of the SYISR Tristatic System.
Article
Environmental Sciences
Xiangpeng Xu, Sheng Zhuge, Banglei Guan, Bin Lin, Shuwei Gan, Xia Yang, Xiaohu Zhang
Summary: This paper proposes an on-orbit calibration method for the relative installation attitude of a camera and a LiDAR on a multi-mode Earth observation satellite. The method does not require a calibration field or additional satellite attitude maneuvers. By using an alternate iterative approach, the multi-solution problem is addressed, and the method achieves a good calibration effect.
Article
Optics
Yue Wang, Xiangjun Wang
Summary: A dynamic binocular stereo vision system based on a non-zoom rotating camera is established, with a novel two-point method for camera parameter estimation and automatic camera alignment for 3D coordinate measurement.
Article
Chemistry, Analytical
Emmanouil Mavrakis, Spiros A. Pergantis
Summary: Microfluidics coupled with ICP-MS allows for powerful quantitation procedures utilizing internal standardization and standard additions, improving determination accuracy for various sample types. The efficient coupling of microfluidic chip to ICP-MS system using a combination of commercially available components enables highly sensitive detection of metal isotopes with minimal sample consumption. High average recoveries and low relative standard deviations were achieved for determined elements across multiple matrices, showcasing the advantages of this newly developed chip-based microfluidic SDA ICP-MS technique.
ANALYTICA CHIMICA ACTA
(2021)
Article
Environmental Sciences
Hansa Y. Magee, Megan M. Maurer, April Cobos, Sangeet Adhikari, Rolf U. Halden
Summary: Although different quantification methods are extensively used in environmental chemistry, their impact on the quality and range of analytical results is understudied. This study compared four commonly used quantification methods and found that they can lead to overestimation or underestimation of results, as well as the presence of matrix effects. The study also highlighted the need to experimentally determine the most accurate alternative quantification method depending on the analyte.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Hongxing Zhu, Honghui Cheng, Donglei Chen, Zhi Ding
Summary: A compact volumetric apparatus has been developed for measuring hydrogen storage materials. It can provide various tests under different pressure and temperature conditions, and employs novel methods to improve testing efficiency and accuracy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Nicla Frigerio, Claudio F. A. Cornaggia, Andrea Matta
Summary: This study explores energy efficient control measures for machining processes by utilizing the machine power state control. By extending control policies through online learning and real-time data acquisition, a novel optimization algorithm is proposed to minimize energy consumption and ensure target production rates.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Multidisciplinary Sciences
Wei-wei Sheng
Summary: This paper proposes a precise measurement method and corresponding calibration procedure for a line structure light vision sensor with a large measurement range. By utilizing a linear translation stage and planar target, the relationship between the center point of the laser stripe and the perpendicular/horizontal distance is obtained. The proposed method eliminates the need for distortion compensation and significantly improves measurement precision.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Kuijun Wu, Jianjun Guo, Zihao Zhang, Huiliang Zhang, Juan Li, Faquan Li, Weiwei He
Summary: A new spectral calibration method is proposed in this paper to improve the measurement accuracy of SO2 cameras, especially for the long-distance detection of optically thick plumes.
Review
Chemistry, Analytical
Natalia Arroyo-Manzanares, Natalia Campillo, Ignacio Lopez-Garcia, Manuel Hernandez-Cordoba, Pilar Vinas
Summary: Mycotoxins are toxic secondary metabolites produced by filamentous fungi, which can persist in food and animal feed, causing adverse effects in humans and animals. Liquid chromatography coupled to tandem mass spectrometry is commonly used for mycotoxin determination, but interest in high resolution mass spectrometry (HRMS) is increasing due to its advantages in structural confirmation and retrospective analysis.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Ignacio Lopez-Garcia, Maria J. Munoz-Sandoval, Manuel Hernandez-Cordoba
Summary: A magnetic dispersive micro-solid phase extraction method for determining thallium content in water is introduced, which allows the complete retention of both thallium(I) and thallium(III) through a series of steps. The method has a high enrichment factor and low detection limit, and its reliability is confirmed through the analysis of certified reference samples.
Article
Food Science & Technology
Andres Martin-Gomez, Natalia Arroyo-Manzanares, Maria Garcia-Nicolas, Angela Lopez-Lorente, Soledad Cardenas, Ignacio Lopez-Garcia, Pilar Vinas, Manuel Hernandez-Cordoba, Lourdes Arce
Summary: The study used Raman spectroscopy as a rapid screening tool to successfully differentiate dry-cured Iberian ham samples of different feeding regimes and breeds, providing new possibilities for preventing labeling fraud. The method showed high validated classification rates for feeding regime (83.3%) and breed (86.7%), with an interlaboratory study confirming its applicability with a validated rate above 80% for 52 samples.
Article
Food Science & Technology
Claudia Gimenez-Campillo, Marta Pastor-Belda, Natalia Campillo, Juan de Dios Hernandez, Isidro Guillen, Pascuala Vizcaino, Ignacio Lopez-Garcia, Manuel Hernandez-Cordoba, Natalia Arroyo-Manzanares, Pilar Vinas
Summary: A method for determining nitrosamines in cooked ham samples was proposed, with five NAs found in the samples at levels ranging from not quantifiable to 40 ng g(-1). The study evaluated the impact of elastic rubber nettings on nitrosamine content in meat products by comparing levels found in products made with different materials.
Article
Chemistry, Analytical
Ana Castell, Natalia Arroyo-Manzanares, Juan de Dios Hernandez, Isidro Guillen, Pascuali Vizcaino, Ignacio Lopez-Garcia, Manuel Hernandez-Cordoba, Pilar Vinas
Summary: Headspace gas chromatography coupled to ion mobility spectrometry (HS-GC-IMS) was proposed as an alternative method for detecting and quantifying microbial contamination in pomegranate juice, showing promising results in volatile organic compounds monitoring.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Ainhoa Oller-Ruiz, Pilar Vinas, Manuel Hernandez-Cordoba, Jose Fenoll, Isabel Garrido, Natalia Campillo
Summary: This study determined fifteen aroma compounds in grapes, including their free and glycosylated forms, using dispersive liquid-liquid microextraction with gas chromatography-mass spectrometry. The method involved solid-liquid extraction followed by parallel microextraction for preconcentration. Enzymatic hydrolysis was required for the extraction of bound forms. The method showed good accuracy and precision, with recoveries in the 82-115% range and low relative standard deviations. The analysis revealed the concentrations of several aroma compounds in grapes.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Environmental Sciences
Maria J. Munoz-Sandoval, M. Caravaca, I Lopez-Garcia, M. Hernandez-Cordoba, Y. Vicente-Martinez
Summary: This study introduces a novel procedure for the total and simultaneous removal of ionic and nanomeric silver in aqueous samples using magnetic nanoparticles wrapped with an ionic liquid. The approach achieves 100% removal efficiency for both silver species, even for different concentrations, within a short period of time. The method shows promise for effective removal of silver contaminants in water.
ENVIRONMENTAL RESEARCH
(2022)
Article
Biochemical Research Methods
Maria Consolacion Rodriguez-Palazon, Natalia Arroyo-Manzanares, Pilar Vinas, Ignacio Lopez-Garcia, Manuel Hernandez-Cordoba, Natalia Campillo
Summary: A new analytical method combining dispersive magnetic solid-phase extraction (DMSPE) and ultra-high-performance liquid chromatography with quadrupole-time-of-flight mass spectrometry (UHPLC-ESI-Q-TOF-MS) was developed for the preconcentration and analysis of capsaicin (CAP), dihydrocapsaicin (DCAP), and N-vanillylnonanamide (PCAP) in human serum samples. The use of magnetic multiwalled carbon nanotubes as the adsorbent material yielded the best results. The method was validated by achieving good linearity and low detection limits, and it was also applied for the identification of capsaicinoid metabolites and related compounds in the serum samples.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Yesica Vicente-Martinez, Maria Jose Munoz-Sandoval, Manuel Hernandez-Cordoba, Ignacio Lopez-Garcia
Summary: Due to the toxicity of mercury, it is necessary to implement analytical procedures that can quantify the different forms of mercury in the environment, even at low concentrations. Additionally, it is desirable for the procedures to distinguish between these forms due to their various environmental and health consequences. This study proposes a dispersive solid-phase microextraction method using a magnetic hybrid material formed by graphene oxide and ferrite (Fe3O4@GO) as the adsorbent, followed by determination using electrothermal atomic absorption spectrometry (ETAAS).
Article
Biochemistry & Molecular Biology
Yesica Vicente-Martinez, Maria Jose Munoz-Sandoval, Manuel Hernandez-Cordoba, Ignacio Lopez-Garcia
Summary: A solid-phase dispersive microextraction method using ferrite as an adsorbent was developed for separating and determining Ga(III) and In(III) ions. The ions were adsorbed onto the ferrite, which was easily collected with a magnet. The analytes were desorbed and measured using electrothermal atomic absorption spectrometry. The procedure showed high enrichment factor and low detection limits, and it was verified with standard reference materials and standard additions. The method could potentially be used for recovering valuable elements from different matrices for reuse.
Article
Spectroscopy
Ignacio Lopez-Garcia, Maria J. Munoz-Sandoval, Manuel Hernandez-Cordoba
Summary: Silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) can be extracted from their ions using magnetic dispersive micro-solid phase extraction with non-functionalised ferrite particles. The extraction is based on controlling the acidity of the medium, without involving oxidation-reduction processes. The analytes are desorbed and determined by electrothermal atomization atomic absorption spectrometry. The method has a high enrichment factor, low detection limits, and good reproducibility.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Food Science & Technology
Juan de Dios Hernandez, Ana Castell, Natalia Arroyo-Manzanares, Isidro Guillen, Pascuali Vizcaino, Ignacio Lopez-Garcia, Manuel Hernandez-Cordoba, Pilar Vinas
Summary: The article presents a method to detect and quantify nitrite from different sources added to meat products, using headspace gas chromatography-mass spectrometry to measure the area of the N2O peak. This method allows the quantification of added nitrite within a concentration range of 10 to 100 mg kg(-1), providing technical support for distinguishing between products truly made without nitrite and those containing nitrite.
Article
Chemistry, Analytical
Qian Wu, Li Tian, Xiangyu Shan, Huiling Li, Chao Li, Juan Lu
Summary: A novel ECL sensor was developed by modifying Fe3CuO4-Ru(bpy)3+ and GO-CdS@ZnS on the electrode for the detection of permethrin. The sensor exhibited high sensitivity and a wide detection range.
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Chemistry, Analytical
Estrella Sanz Rodriguez, Kyra Wood, Paul R. Haddad, Brett Paull
Summary: This study presents a simple, rapid, and reliable method for determining boron in aqueous solutions using suppressed ion chromatography coupled to electrospray ionisation-triple quadrupole mass spectrometry. The method achieved a low limit of detection and demonstrated excellent analytical performance.
Article
Chemistry, Analytical
Aline Cournut, Paul Moustiez, Yannick Coffinier, Christine Enjalbal, Claudia Bich
Summary: Alzheimer's disease is a major cause of senile dementia and is characterized by the aggregation of neurofibrillary tangles and amyloid plaques in the brain. The A beta 1-42 peptide is considered the primary cause of neurotoxicity due to its insolubility and subsequent aggregation. A beta 1-42 and A beta 1-40 have been identified as relevant biomarkers for AD diagnosis, and SurfaceAssisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) was used to monitor the A beta 1-42/A beta 1-40 ratio without prior sample treatment.
Article
Chemistry, Analytical
Dotse Selali Chormey, Buse Tugba Zaman, Tulay Borahan Kustanto, Sezin Erarpat Bodur, Suleyman Bodur, Elif Ozturk Er, Sezgin Bakirdere
Summary: This review provides an overview of the harmful effects of endocrine disrupting chemicals (EDCs) on human health and introduces the methods for analyzing EDCs. Recent research has focused on using green chemicals, such as deep eutectic solvents (DESs), for microextraction to ensure environmental safety.
Article
Chemistry, Analytical
Yan Zhang, Renfeng Xu, Jingjing Wu, Zhenghong Zhang, Yuhuang Wang, Hongqin Yang, Sheng Zhang
Summary: This study visualized the pore-like structures in prostate cancer cell membranes after treatment with the anticancer drug paclitaxel, demonstrating its mechanism of action related to oxidative damage.
Article
Chemistry, Analytical
Chihong Ma, Qin Zhou, Jinjin Shi, Hua Gao, Di Huang, Huimin Xue, Han Wang, Zhenzhong Zhang, Sen Yang, Junli Zhang, Kaixiang Zhang
Summary: We developed a CRISPR-empowered electrochemical biosensor, named PER-E-CRISPR, for amplification-free and sensitive detection of miR-21. The biosensor combines the advantages of CRISPR/Cas13a and primer exchange reaction (PER) for target amplification. Under optimized conditions, the PER-E-CRISPR assay exhibits a linear range from 10-13 to 10-7 M and a limit of detection of 30.2 fM. The biosensor shows excellent performance in actual plasma, indicating promising prospects for miRNA detection in molecular diagnosis.
Article
Chemistry, Analytical
Gang Liang, Jie Zhao, Yufei Gao, Tao Xie, Jianhui Zhen, Ligang Pan, Wenwen Gong
Summary: Molecular docking (MD) analysis is widely used for studying the interaction between aptamers and small molecules. This study established steady-state aptamers of tertiary structures (SATS) using specific aptamers of tetracycline antibiotics as docking models. Molecular docking results revealed multiple binding sites in the SATS of aptamers, with significant variations in binding free energy (BFE) and docking score (DS). The study also proposed a method for MD analysis based on SATS, providing insights into binding mode and predicting binding sites.
Article
Chemistry, Analytical
Yixuan Xu, Changchang Teng, Huiping Dang, Dalong Yin, Lifeng Yan
Summary: Stable organic radical molecules with high NIR fluorescence quantum efficiency have been synthesized and encapsulated into nanoparticles, which show great potential for both photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors.
Article
Chemistry, Analytical
Yu Su, Dandan Yang, Yanjie Wang, Jie Ding, Lan Ding, Daqian Song
Summary: In this study, a highly selective molecularly imprinted polymer Cu-MIPs@CS was designed and synthesized for bisphenol A (BPA). Cu-MIPs@CS showed significantly enhanced imprinting factor and selective factor towards BPA compared to MIPs@CS. It also exhibited superior discrimination ability between BPA and its structural analogue. Additionally, Cu-MIPs@CS were successfully applied as a solid phase extraction adsorbent for the determination of BPA in drinking water samples.
Article
Chemistry, Analytical
Yi Qiao, Qiongdan Zhang, Yukun He, Tianguang Cheng, Jing Tu
Summary: Single cell heterogeneity plays an important role in many biological phenomena, and distinguishing cells with specific mutations is beneficial for clinical diagnosis and drug screening. This study introduces a gel plate platform that can distinguish cell types based on their phenotypes, with low equipment requirement. The gel platform has potential in point-of-care circumstances and single-cell stimulation responses that prioritize efficiency and simplicity.
Article
Chemistry, Analytical
Chengke Wang, Shuyang Sun, Ping Wang, Huawei Zhao, Wenling Li
Summary: The food safety of aquatic products is a global concern. Nanotechnology-based analyses have advantages in the detection of bacteria, metal ions, and small molecule contaminants. This review summarizes the recent advances in biosensing strategies for aquatic products and highlights the application of nanomaterials, lateral flow-based biosensors, surface-enhanced Raman scattering, microfluidic chips, and molecular imprinting technologies.
Article
Chemistry, Analytical
Liping Zhu, Zeng Tang, Xuemei Zhang, Li Zhu, Tian Meng, Linying Yu, Ting Xiao, Shasha Lu, Xiaoli Xiong, Xiurong Yang
Summary: A sensitive off-on electrochemiluminescence DNA sensor was developed using Exo III-assisted cascade amplification system. The sensor achieved high selectivity and ultra-high sensitivity in detecting target DNA by utilizing ECL and SPR effects. This study provides a new perspective for designing highly sensitive and programmable ECL biosensors.
Article
Chemistry, Analytical
Tong Li, Mengxu Sun, Suping Xia, Ting Huang, Rong-Tian Li, Chunrong Li, Zong Dai, Jin-Xiang Chen, Jun Chen, Nuan Jia
Summary: Here, we developed a binary system based on DNA tetrahedron and fluorogenic RNA aptamers for highly specific and label-free mRNA imaging in living cells. This system achieved high specificity label-free detection of nucleic acids with a detection limit of 1.34 nM. The method has potential applications in early disease diagnosis and new drug development.
Article
Chemistry, Analytical
Yao Zhao, Shu Zhang, Wang Yao, Yuxuan Zhu, Jing Qian, Juan Yang, Nianjun Yang
Summary: A new hierarchical nanostructured composite with high conductivity and catalytic activity is synthesized. The sensor exhibits significant catalytic effect and high sensitivity for monitoring the environmental endocrine disruptor bisphenol A (BPA).
