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Sensors and actuators. B, Chemical 134건

  1. [해외논문]   Plasmonic ELISA for naked-eye detection of ochratoxin A based on the tyramine-H2O2 amplification system   SCI SCIE SCOPUS

    Liang, Yi (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China ) , Huang, Xiaolin (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China ) , Chen, Xirui (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China ) , Zhang, Wenjing (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China ) , Ping, Guo (Jiangxi Food Inspection and Testing Research Institute, Nanchang, 330096, PR China ) , Xiong, Yonghua (State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China)
    Sensors and actuators. B, Chemical v.259 ,pp. 162 - 169 , 2018 , 0925-4005 ,

    초록

    Abstract A novel direct competitive plasmonic enzyme-linked immunosorbent assay (dc-pELISA) was applied to detect ochratoxin A (OTA) with naked eyes. In this assay, horseradish peroxidase (HRP) + hydrogen peroxide (H 2 O 2 ) + tyramine (TYR)-induced gold nanoparticle (AuNP) aggregation was considered as a signal output; AuNP aggregation could be triggered through the phenol polymerization of TYR, which was induced by hydroxyl radicals from HRP-catalyzed H 2 O 2 ; OTA-labeled catalase (CAT) was used as a competing antigen to consume H 2 O 2 . Owing to the combined advantages of ultrahigh CAT catalytic activity for H 2 O 2 and dual-color responses (red and blue) generated through AuNP aggregation, the proposed method was highly sensitive and thus could be employed with naked eyes to detect OTA qualitatively with a cut-off limit of 150 pg/mL. Our method also demonstrated a good dynamic linear range (12.5–150 pg/mL) for quantitative OTA determination with a reliable correlation coefficient of R 2 = 0.992, a half-maximal inhibitory concentration of 84.75 pg/mL, and a detection limit of 17.8 pg/mL. In brief, this newly-designed technique is considerably suitable for high-throughput screening detection or point-of-care diagnostics in resource-constrained regions because of the easy readout of results by naked eyes without the use of advanced detection equipment. Highlights HRP + H 2 O 2 + TYR-induced AuNP aggregation was firstly considered as a signal output of dc-pELISA for OTA detection. The cut-off limit of developed dc-pELISA was achieved at 150 pg/mL by naked eye. This proposed strategy is considerably suitable for high-throughput screening detection or point-of-care diagnostics. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  2. [해외논문]   Colorimetric sensor based on a poly(ortho-phenylenediamine-co-aniline) copolymer for the monitoring of tilapia (Orechromis niloticus) freshness   SCI SCIE SCOPUS

    Domí (Corresponding author.) , nguez-Aragó , n, Angé , lica , Olmedo-Martí , nez, Jorge A. , Zaragoza-Contreras, E. Armando
    Sensors and actuators. B, Chemical v.259 ,pp. 170 - 176 , 2018 , 0925-4005 ,

    초록

    Abstract For monitoring tilapia ( Orechromis niloticus ) freshness degree, a colorimetric method based on a copolymer of ortho -phenylenediamine and aniline, in a molar ratio of 1 to 1, was developed. The optical sensor changes color as a function of pH, therefore, it is sensitive to the presence of alkaline vapors such as the volatile amines (TVB-N) produced during fish spoilage. A kinetic approach was used to correlate the copolymer (sensor) response to the presence of ammonia, dimethylamine, and trimethylamine vapors, which are the main products generated by the bacteria during fish spoilage. The levels of TVB-N and microbial growth patterns ( Pseudomonas spp ), in specimens of tilapia fillets stored under refrigeration at 10 °C, correlated well with the color change of the copolymer, showing that after 48 h the specimen was no longer fit for human consumption. Highlights The copolymer changes color by effect of the presence of amine vapors due to deprotonation. The colorimetric sensor is used to detect the freshness of tilapia in real time. After 48 h of storage under refrigeration at 10 °C the fillets are no longer fit for human consumption. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Supramolecular recognition of A-tracts DNA by calix[4]carbazole   SCI SCIE SCOPUS

    Li, Gang (Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China ) , Song, Xiaoyu (China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang 110016, China ) , Yu, Hui (Engineering Technology Research Center for Functional Textiles in Higher Education of Guang Dong Province, College of Textiles and Clothing, Wuyi University, Jiangmen 529020, China ) , Hu, Chun (Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China ) , Liu, Mingzhe (Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China ) , Cai, Jie (Engineering Technology Research Center for Functional Textiles in Higher Education of Guang Dong Province, College of Textiles and Clothing, Wuyi University, Jiangmen 529020, China ) , Zhao, Liang (Wuya College of Innovation, Shenyang Pharmaceutical Universit) , Chen, Yan , Yang, Peng
    Sensors and actuators. B, Chemical v.259 ,pp. 177 - 182 , 2018 , 0925-4005 ,

    초록

    Abstract Naturally occurring biomolecules such as transcription factors recognize specific sequences of DNA by binding to its major groove whereas the synthetic sequence-specific major-groove binders are rare. We herein report that a synthetic calix[4]carbazole could serve as the optical ligand of A-tracts (B*-form DNA) by binding to its major-groove, elucidated by UV-vis, fluorescence, CD and NMR titrations. Highlights The calix[4]carbazole ( 2 ) is the first synthetic ligand of A-tracts DNA. The binding behavior of 2 to A-tracts DNA could be told optically by UV-vis, fluorescence and Circular Dichroism (CD) spectra. 2 exhibits the selective binding feature toward A-tracts (B*-form) DNA over the other tested DNA. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  4. [해외논문]   A cluster analysis approach based on exploiting density peaks for gas discrimination with electronic noses in open environments   SCI SCIE SCOPUS

    Fan, Han (Corresponding author.) , Bennetts, Victor Hernandez , Schaffernicht, Erik , Lilienthal, Achim J.
    Sensors and actuators. B, Chemical v.259 ,pp. 183 - 203 , 2018 , 0925-4005 ,

    초록

    Abstract Gas discrimination in open and uncontrolled environments based on smart low-cost electro-chemical sensor arrays (e-noses) is of great interest in several applications, such as exploration of hazardous areas, environmental monitoring, and industrial surveillance. Gas discrimination for e-noses is usually based on supervised pattern recognition techniques. However, the difficulty and high cost of obtaining extensive and representative labeled training data limits the applicability of supervised learning. Thus, to deal with the lack of information regarding target substances and unknown interferents, unsupervised gas discrimination is an advantageous solution. In this work, we present a cluster-based approach that can infer the number of different chemical compounds, and provide a probabilistic representation of the class labels for the acquired measurements in a given environment. Our approach is validated with the samples collected in indoor and outdoor environments using a mobile robot equipped with an array of commercial metal oxide sensors. Additional validation is carried out using a multi-compound data set collected with stationary sensor arrays inside a wind tunnel under various airflow conditions. The results show that accurate class separation can be achieved with a low sensitivity to the selection of the only free parameter, namely the neighborhood size, which is used for density estimation in the clustering process. Highlights Unsupervised approach for gas discrimination in uncontrolled environments. Automatic estimation of the number of airborne gases in the environment. Superior classification performance compared to several classical clustering algorithms.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   DNA-templated Au nanoclusters and MnO2 sheets: a label-free and universal fluorescence biosensing platform   SCI SCIE SCOPUS

    Wang, Hai-Bo (Corresponding author.) , Li, Yang , Bai, Hong-Yu , Liu, Yan-Ming
    Sensors and actuators. B, Chemical v.259 ,pp. 204 - 210 , 2018 , 0925-4005 ,

    초록

    Abstract A label-free and universal fluorescence biosensing paltform has been constructed for probing and recognizing biomolecular interactions based on the excellent fluorescent properties of poly(adenine) (poly A) DNA templated-Au nanoclusters (DNA-AuNCs) and the good quenching ability of MnO 2 sheets. Due to the high quenching efficiency of MnO 2 sheets, the luminescence of DNA-AuNCs was decreased. Because single-stranded DNA-AuNCs was adsorbed onto the surface of MnO 2 sheets through the physical absorption behavior between nucleobases of single-stranded DNA and the basal plane of MnO 2 sheets. When the target DNA was introduced, the DNA-AuNCs could hybridize with the target DNA and form double-stranded duplex DNA structures, which resulting in the desorption of DNA-AuNCs from the surface of MnO 2 sheets. Thus, the fluorescence signal of system was recovered. Similarly, in the presence of target substrate, aptamer-substrate complexes formed and resulted in the luminescence of DNA-AuNCs. By exploring DNA-AuNCs as signal reporter and MnO 2 sheets as the quencher, this strategy could avoid the complex labelling process of the DNA probe and offer the advantages of simplicity and cost efficiency. Highlights We developed a new fluorescence sensing platform for probing biomolecular. Low-cost MnO 2 sheets were used as novel fluorescent quencher. DNA templated AuNCs were utilized for fluorescent indicator and molecular recognition. This strategy was free of any fluorescence dye label and other complex design. The combination of DNA-AuNCs and MnO 2 sheets brings novel opportunities in bioanalysis. Graphical abstract A novel fluorescent biosensing paltform has been developed for probing and recognizing biomolecular interactions on the basis of the excellent fluorescent properties of DNA-AuNCs and the good quenching ability of MnO 2 sheets. [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Enhancing the quantum yield and Cu2+ sensing sensitivity of carbon dots based on the nano-space confinement effect of silica matrix   SCI SCIE SCOPUS

    Qiao, Yali (Corresponding author.) , Liu, Chunyan , Zheng, Xingwang
    Sensors and actuators. B, Chemical v.259 ,pp. 211 - 218 , 2018 , 0925-4005 ,

    초록

    Abstract Although the analytical applications of the fluorescent carbon dots (CDs) were widely explored, the development of effective fluorescence signal amplification scheme based on the CDs was challengeable. In this work, we firstly found that, after CDs and polyethyleneimine (PEI) were together doped into silica nanoparticles via a reverse microemulsion route, the CDs inside as-prepared CDs/PEI/silica nanoparticles (CDs/PEI/SiO 2 NPs) presented the higher fluorescence quantum yield and stronger signal amplification ability than that of free-state CDs. Here, the possible fluorescence enhancing mechanism of CDs inside CDs/PEI/SiO 2 NPs was investigated by UV–vis absorption spectra, fluorescence spectra, IR spectra, transmission electron microscope and zeta potential technique and the possible mechanism was also proposed. In addition, the Cu 2+ was selected as the model to investigate the signal amplification feature of the CDs/PEI/SiO 2 NPs. Our results showed that, encapsulation of CDs and PEI into silica NPs lead to a fluorescence enhancement of CDs, the fluorescence quantum yield of CDs increased from 13.7% to 38.6%. The as-prepared CDs/PEI/SiO 2 NPs exhibited 100-times sensitivity increasing for sensing Cu 2+ compared with free-state CDs sensing scheme reported by the previous literature. Highlights Silica matrix selectively reacted with three kinds of amine groups of PEI. Amine groups of PEI densely concentrated inside silica matrix. 3-times quantum yield enhancing by encapsulation of CDs and PEI into silica matrix. The CDs/PEI/SiO 2 NPs presented a 100 times sensitivity increasing for sensing Cu 2+ than free-stated CDs.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Construction of a fluorine substituted chromenylium-cyanine near-infrared fluorophore for ratiometric sensing   SCI SCIE SCOPUS

    Zhu, Xiaoyan (Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, PR China ) , Yuan, Lin (Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, PR China ) , Hu, Xiaoxiao (College of Life Sciences, Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometric, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, PR China, PR China ) , Zhang, Lili (Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engin) , Liang, Yuxin , He, Shengyuan , Zhang, Xiao-Bing , Tan, Weihong
    Sensors and actuators. B, Chemical v.259 ,pp. 219 - 225 , 2018 , 0925-4005 ,

    초록

    Abstract Near-infrared (NIR) fluorescent probes have been considered as powerful tools for exploring bioactive species and biological processes in living systems by virtue of the substantial merits of the NIR window (such as minimal photo-toxicity, deep tissue penetration, and low background interference). However, the development of effective NIR fluorescent probes for biological application is still facing great challenges due to some weakness (for example, pH sensitivity, poor chemical and photo-stability) of mainly current NIR fluorophores. Herein, we synthesized a novel fluorine atom substituted NIR chromenylium-cyanine fluorophore, termed CCF-OH , with an optically tunable hydroxyl group. Compound CCF-OH possess several optical advantages, including high chemical stability, high photo-stability, and high fluorescence quantum yield (Φ = 0.47). Significantly, a low pK a value (6.3) of CCF-OH was obtained, making its fluorescence signal steady around the pH ranging from 6.8 to 8.1. To demonstrate the practicability of CCF-OH , a mitochondria-targeted near-infrared fluorescent probe, N-Cys , was developed by masking the hydroxyl group of CCF-OH with an acrylate group as the recognition unit for cysteine (Cys). N-Cys responded to Cys with an obvious ratiometric signal. Furthermore, N-Cys has also been successfully applied for ratiometric NIR imaging of Cys in living cells, suggesting the great potential of the new NIR fluorophore, CCF-OH , for practical applications in living systems. Highlights A novel fluorine atom substituted NIR chromenylium-cyanine fluorophore (termed CCF-OH ) was proposed. CCF-OH exhibited high fluorescence quantum yield, high chemical and photo-stability, and stable fluorescence signal around the pH range from 6.8 to 8.1. To demonstrate the practicability of CCF-OH , a mitochondria-targeted near-infrared fluorescent probe, N-Cys , was developed by using CCF-OH as the fluorescent reporter. Probe N-Cys displayed excellent selectivity, high sensitivity, and ratiometric response to Cys. Probe N-Cys has also been successfully applied for ratiometric NIR imaging of Cys in living cells, suggesting the great potential of the new NIR fluorophore, CCF-OH , for practical applications in living systems. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   UV-light-induced synthesis of PEI-CuNCs based on Cu2+-quenched fluorescence turn-on assay for sensitive detection of biothiols, acetylcholinesterase activity and inhibitor   SCI SCIE SCOPUS

    Yang, Jinlan (Corresponding author.) , Song, Naizhong , Lv, Xueju , Jia, Qiong
    Sensors and actuators. B, Chemical v.259 ,pp. 226 - 232 , 2018 , 0925-4005 ,

    초록

    Abstract Polyethyleneimine-protected copper nanoclusters (PEI-CuNCs) were synthesized and applied to detect Cu 2+ , biothiols, and acetylcholinesterase (AChE). A facile UV-light-induced method was used in the synthesize process to obtain PEI-CuNCs with high stability and strong fluorescence intensity. Based on the quenching mechanism, a label-free assay for sensing Cu 2+ by PEI-CuNCs was developed with the limit of detection (LOD) of 0.12 μM. Biothiols with SH functional groups could react with Cu 2+ to form the RSH–Cu 2+ complex, making Cu 2+ -triggered fluorescence quenching turned on. Two biothiols, glutathione and cysteine, were determined with LODs of 0.26 μM and 0.34 μM within linear ranges of 0.5–25 μM and 1–25 μM, respectively. AChE could hydrolyze acetylthiocholine into thiocholine (TCh), which reacted with Cu 2+ to form TCh–Cu 2+ complex and turned on Cu 2+ -quenched fluorescence. LOD of AChE was calculated to be 1.38 mU/mL within a linear range from 3 to 200 mU/mL. A typical inhibitor of AChE, tacrine, was also detected by this convenient fluorescence turn-on assay with the corresponding IC 50 value (the inhibitor concentration required for 50% inhibition of the enzyme activity) of 53.4 nM. Moreover, the assay was successfully applied to the detection of biothiols and AChE activity in human serum samples. Results demonstrated the great potential of PEI-CuNCs and paved a new avenue for exploring their versatile biosensing applications. Highlights A facile UV-light-induced method was applied to obtain PEI-CuNCs with high stability and strong fluorescence intensity. Cu 2+ acted as not only an analyte, but also a quencher mediated PEI-CuNCs for sensing other targets. Biothiols and acetylcholinesterase could be specifically detected based on Cu 2+ -quenched fluorescence turn-on assay. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   A novel “turn-on” fluorescent probe with a large stokes shift for homocysteine and cysteine: Performance in living cells and zebrafish   SCI SCIE SCOPUS

    Song, Haohan (Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China ) , Zhang, Junli (Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng 475004, China ) , Wang, Xiao (Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China ) , Zhou, Yanmei (Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China ) , Xu, Chenggong (Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemis) , Pang, Xiaobin , Peng, Xiaojun
    Sensors and actuators. B, Chemical v.259 ,pp. 233 - 240 , 2018 , 0925-4005 ,

    초록

    Abstract Carbazole-based fluorescent probes have a significant edge on structure and optical properties, but stokes shift of them were mostly less than 100 nm. In this work, a novel carbazole-based fluorescent probe, which featured with a large stokes shift (128 nm), was used to effectively detect homocysteine (Hcy) and cysteine (Cys). This probe revealed obvious color variation and a “turn-on” alteration of fluoresence toward Hcy and Cys. Furthermore, the probe works under physiological conditions and can image thiol in living cells as well as zebrafish because of its wonderful cell permeability. Notably, it provides a possibility to detect endogenous bio-thiols quantitatively in living cells. Highlights A novel colorimetric and turn-on fluorescent probe for Hcy and Cys was synthesized. The probe shows a large stokes shift (128 nm). The probe can be used for imaging in living cells and zebrafish. The probe provides a possibility to detect endogenous bio-thiols quantitatively. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  10. [해외논문]   Enhancing electronic nose performance based on a novel QPSO-RBM technique   SCI SCIE SCOPUS

    Luo, Hanxiao (Corresponding author.) , Jia, Pengfei , Qiao, Siqi , Duan, Shukai
    Sensors and actuators. B, Chemical v.259 ,pp. 241 - 249 , 2018 , 0925-4005 ,

    초록

    Abstract A novel classification technique for bacteria detection termed quantum-behaved particle swarm optimization-based restricted Boltzmann machine (QPSO-RBM) based on electronic nose technology is proposed in this paper. In order to improve the performance of the QPSO-RBM technique, three training objective functions have been adopted in the training process of RBM respectively. A new synchronous optimization method is adopted in QPSO-RBM to ensure it research the best performance. By comparing classification performance of the three training objective functions, we have found discriminative training objective has better effect than the other two ways. Four kinds of features extracted from the time and frequency domains have been developed to demonstrate the effectiveness of this classification technique for four different classes of wounds. When wavelet coefficients are adopted as features, QPSO-RBM performs best. Then the link between the number of hidden nodes in RBM and recognition rate of the model has been explored. In the end, QPSO-RBM is compared with four existing classifiers: radical basis function neural network (RBFNN), support vector machine (SVM), k-nearest neighbor (KNN) and linear discriminant analysis (LDA). The results have shown that QPSO-RBM outperforms the four classifiers.

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    무료다운로드 유료다운로드

    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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