keyword
MENU ▼
Read by QxMD icon Read
search

Sensors

keyword
https://www.readbyqxmd.com/read/28636246/stretchable-electrochemical-sensor-for-inducing-and-monitoring-cell-mechanotransduction-in-real-time
#1
Yan-Ling Liu, Yu Qin, Zi-He Jin, Xue-Bo Hu, Miao-Miao Chen, Rong Liu, Christian Amatore, Wei-Hua Huang
Existing methods offer little direct and real-time information about stretch-triggered biochemical responses during cell mechanotransduction. Herein, we report a novel stretchable electrochemical sensor that takes advantage of a hierarchical percolation network of carbon nanotubes and gold nanotubes (CNTs- Au NTs). This hybrid nano-structure provides the sensor with excellent time-reproducible mechanical and electrochemical performances while granting very good cellular compatibility, making it perfectly apt to induce and monitor simultaneously transient biochemical signals...
June 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28636010/engineering-multi-functional-bacterial-outer-membrane-vesicles-as-modular-nanodevices-for-biosensing-and-bioimaging
#2
Qi Chen, Sharon Rozovsky, Wilfred Chen
Outer membrane vesicles (OMVs) are proteoliposomes derived from the outer membrane and periplasmic space of many Gram-negative bacteria including E. coli as part of their natural growth cycle. Inspired by the natural ability of E. coli to sort proteins to both the exterior and interior of OMVs, we reported here a one-pot synthesis approach to engineer multi-functionalized OMV-based sensors for both antigen binding and signal generation. SlyB, a native lipoprotein, was used a fusion partner to package nanoluciferase (Nluc) within OMVs, while a previously developed INP-Scaf3 surface scaffold was fused to the Z-domain for antibody recruiting...
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28635956/self-assembled-three-dimensional-network-designs-for-soft-electronics
#3
Kyung-In Jang, Kan Li, Ha Uk Chung, Sheng Xu, Han Na Jung, Yiyuan Yang, Jean Won Kwak, Han Hee Jung, Juwon Song, Ce Yang, Ao Wang, Zhuangjian Liu, Jong Yoon Lee, Bong Hoon Kim, Jae-Hwan Kim, Jungyup Lee, Yongjoon Yu, Bum Jun Kim, Hokyung Jang, Ki Jun Yu, Jeonghyun Kim, Jung Woo Lee, Jae-Woong Jeong, Young Min Song, Yonggang Huang, Yihui Zhang, John A Rogers
Low modulus, compliant systems of sensors, circuits and radios designed to intimately interface with the soft tissues of the human body are of growing interest, due to their emerging applications in continuous, clinical-quality health monitors and advanced, bioelectronic therapeutics. Although recent research establishes various materials and mechanics concepts for such technologies, all existing approaches involve simple, two-dimensional (2D) layouts in the constituent micro-components and interconnects. Here we introduce concepts in three-dimensional (3D) architectures that bypass important engineering constraints and performance limitations set by traditional, 2D designs...
June 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28635672/towards-the-internet-of-smart-trains-a-review-on-industrial-iot-connected-railways
#4
Paula Fraga-Lamas, Tiago M Fernández-Caramés, Luis Castedo
Nowadays, the railway industry is in a position where it is able to exploit the opportunities created by the IIoT (Industrial Internet of Things) and enabling communication technologies under the paradigm of Internet of Trains. This review details the evolution of communication technologies since the deployment of GSM-R, describing the main alternatives and how railway requirements, specifications and recommendations have evolved over time. The advantages of the latest generation of broadband communication systems (e...
June 21, 2017: Sensors
https://www.readbyqxmd.com/read/28635665/towards-a-uniform-metrological-assessment-of-grating-based-optical-fiber-sensors-from-refractometers-to-biosensors
#5
REVIEW
Francesco Chiavaioli, Carlos A J Gouveia, Pedro A S Jorge, Francesco Baldini
A metrological assessment of grating-based optical fiber sensors is proposed with the aim of providing an objective evaluation of the performance of this sensor category. Attention was focused on the most common parameters, used to describe the performance of both optical refractometers and biosensors, which encompassed sensitivity, with a distinction between volume or bulk sensitivity and surface sensitivity, resolution, response time, limit of detection, specificity (or selectivity), reusability (or regenerability) and some other parameters of generic interest, such as measurement uncertainty, accuracy, precision, stability, drift, repeatability and reproducibility...
June 21, 2017: Biosensors
https://www.readbyqxmd.com/read/28635643/a-multi-wavelength-opto-electronic-patch-sensor-to-effectively-detect-physiological-changes-against-human-skin-types
#6
Liangwen Yan, Sijung Hu, Abdullah Alzahrani, Samah Alharbi, Panagiotis Blanos
Different skin pigments among various ethnic group people have an impact on spectrometric illumination on skin surface. To effectively capture photoplethysmographic (PPG) signals, a multi-wavelength opto-electronic patch sensor (OEPS) together with a schematic architecture of electronics were developed to overcome the drawback of present PPG sensor. To perform a better in vivo physiological measurement against skin pigments, optimal illuminations in OEPS, whose wavelength is compatible with a specific skin type, were optimized to capture a reliable physiological sign of heart rate (HR)...
June 21, 2017: Biosensors
https://www.readbyqxmd.com/read/28635631/ag-nanoparticles-drop-casting-modification-of-screen-printed-electrodes-for-the-simultaneous-voltammetric-determination-of-cu-ii-and-pb-ii
#7
Clara Pérez-Ràfols, Julio Bastos-Arrieta, Núria Serrano, José Manuel Díaz-Cruz, Cristina Ariño, Joan de Pablo, Miquel Esteban
A new silver nanoparticle modified screen-printed electrode was developed and applied to the simultaneous determination of Pb(II) and Cu(II). Two different types of silver nanoparticles with different shapes and sizes, Ag nanoseeds and Ag nanoprisms, were microscopically characterized and three different carbon substrates, graphite, graphene and carbon nanofibers, were tested. The best analytical performance was achieved for the combination of Ag nanoseeds with a carbon nanofiber modified screen-printed electrode...
June 21, 2017: Sensors
https://www.readbyqxmd.com/read/28635623/compressed-sensing-reconstruction-based-on-block-sparse-bayesian-learning-in-bearing-condition-monitoring
#8
Jiedi Sun, Yang Yu, Jiangtao Wen
Remote monitoring of bearing conditions, using wireless sensor network (WSN), is a developing trend in the industrial field. In complicated industrial environments, WSN face three main constraints: low energy, less memory, and low operational capability. Conventional data-compression methods, which concentrate on data compression only, cannot overcome these limitations. Aiming at these problems, this paper proposed a compressed data acquisition and reconstruction scheme based on Compressed Sensing (CS) which is a novel signal-processing technique and applied it for bearing conditions monitoring via WSN...
June 21, 2017: Sensors
https://www.readbyqxmd.com/read/28634409/characterization-of-the-3d-structure-of-a-cultivated-land-surface-and-its-influence-on-wheat-seedlings-growth-using-kinect
#9
Tao Liu, Wen Chen, Fujian Li, Wei Wu, Chengming Sun, Jinfeng Ding, Xinkai Zhu, Wenshan Guo
The quality of wheat emergence has a significant impact on the subsequent growth and development of seedlings. The structure of cultivated land surfaces is an important factor influencing wheat seedlings growth. However, few studies have investigated this. In this study, three-dimensional structural parameters of cultivated land surfaces were collected using 3D imaging equipment, and the effects of different grades of lands on the emergence and growth of wheat were evaluated. The evaluation criteria for the soil blocks was designed according to the ISO-25178-2 standard, and the wheat emergence rate, speed, tillering capacity per plant, dry weight per plant, and final yields of different grades of cultivated land were investigated...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634401/ohrr-of-mycobacterium-smegmatis-senses-and-responds-to-intracellular-organic-hydroperoxide-stress
#10
Omar A Garnica, Kishore Das, Subramanian Dhandayuthapani
Organic hydroperoxide reductase regulator (OhrR) in bacteria is a sensor for organic hydroperoxide stress and a transcriptional regulator for the enzyme organic hydroperoxide reductase (Ohr). In this study we investigated, using a GFP reporter system, whether Mycobacterium smegmatis OhrR has the ability to sense and respond to intracellular organic hydroperoxide stress. It was observed that M. smegmatis strains bearing the pohr-gfpuv fusion construct were able to express GFP only in the absence of an intact ohrR gene, but not in its presence...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634298/analyses-of-pde-regulated-phosphoproteomes-reveal-unique-and-specific-camp-signaling-modules-in-t-cells
#11
Michael-Claude G Beltejar, Ho-Tak Lau, Martin G Golkowski, Shao-En Ong, Joseph A Beavo
Specific functions for different cyclic nucleotide phosphodiesterases (PDEs) have not yet been identified in most cell types. Conventional approaches to study PDE function typically rely on measurements of global cAMP, general increases in cAMP-dependent protein kinase (PKA), or the activity of exchange protein activated by cAMP (EPAC). Although newer approaches using subcellularly targeted FRET reporter sensors have helped define more compartmentalized regulation of cAMP, PKA, and EPAC, they have limited ability to link this regulation to downstream effector molecules and biological functions...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28634194/zbp1-dai-ubiquitination-and-sensing-of-influenza-vrnps-activate-programmed-cell-death
#12
Sannula Kesavardhana, Teneema Kuriakose, Clifford S Guy, Parimal Samir, R K Subbarao Malireddi, Ashutosh Mishra, Thirumala-Devi Kanneganti
Innate sensing of influenza virus infection induces activation of programmed cell death pathways. We have recently identified Z-DNA-binding protein 1 (ZBP1) as an innate sensor of influenza A virus (IAV). ZBP1-mediated IAV sensing is critical for triggering programmed cell death in the infected lungs. Surprisingly, little is known about the mechanisms regulating ZBP1 activation to induce programmed cell death. Here, we report that the sensing of IAV RNA by retinoic acid inducible gene I (RIG-I) initiates ZBP1-mediated cell death via the RIG-I-MAVS-IFN-β signaling axis...
June 20, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28633953/reversal-learning-and-resurgence-of-operant-behavior-in-zebrafish-danio-rerio
#13
Toshikazu Kuroda, Yuto Mizutani, Carlos R X Cançado, Christopher A Podlesnik
Zebrafish are used extensively as vertebrate animal models in biomedical research for having such features as a fully sequenced genome and transparent embryo. Yet, operant-conditioning studies with this species are scarce. The present study investigated reversal learning and resurgence of operant behavior in zebrafish. A target response (approaching a sensor) was reinforced in Phase 1. In Phase 2, the target response was extinguished while reinforcing an alternative response (approaching a different sensor)...
June 17, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28633707/qualitative-analysis-of-biological-tuberculosis-samples-by-an-electronic-nose-based-artificial-neural-network
#14
E I Mohamed, M A Mohamed, M H Moustafa, S M Abdel-Mageed, A M Moro, A I Baess, S M El-Kholy
OBJECTIVE: To apply an e-nose system for monitoring headspace volatiles in biological samples from Egyptian patients with active pulmonary tuberculosis (TB) and healthy controls (HCs) and compare them with standard sputum analysis. DESIGN: The study population comprised 260 (140 males, 120 females) newly diagnosed TB patients and 240 (120 males, 120 females) HCs matched by age and socio-economic level admitted to hospitals specialising in chest diseases in Alexandria, Behera, Giza and Damietta Governorates, Egypt...
July 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28633563/mammalian-synthetic-biology-engineering-biological-systems
#15
Joshua B Black, Pablo Perez-Pinera, Charles A Gersbach
The programming of new functions into mammalian cells has tremendous application in research and medicine. Continued improvements in the capacity to sequence and synthesize DNA have rapidly increased our understanding of mechanisms of gene function and regulation on a genome-wide scale and have expanded the set of genetic components available for programming cell biology. The invention of new research tools, including targetable DNA-binding systems such as CRISPR/Cas9 and sensor-actuator devices that can recognize and respond to diverse chemical, mechanical, and optical inputs, has enabled precise control of complex cellular behaviors at unprecedented spatial and temporal resolution...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633541/the-development-of-a-glucose-dehydrogenase-3d-printed-glucose-sensor-a-proof-of-concept-study
#16
Anngela Adams, Aldin Malkoc, Jeffrey T La Belle
This work represents a preliminary proof-of-concept design and verification of a 3D-printed glucose biosensor. The proof of concept presented is the first example of glucose dehydrogenase sensor fabricated by a 3D-printer while maintaining similar features to current lab-industry standards. The sensor was verified to detect physiological glucose concentrations between 0 and 400 mg/dL with a linear coefficient as high as .97. This study showed that it was possible to use 3D-printed technology to create a biosensor sensitive to glucose detection...
June 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28633537/extensive-assessment-of-blood-glucose-monitoring-during-postprandial-period-and-its-impact-on-closed-loop-performance
#17
Lyvia Biagi, Arthur Hirata Bertachi, Ignacio Conget, Carmen Quirós, Marga Giménez, F Javier Ampudia-Blasco, Paolo Rossetti, Jorge Bondia, Josep Vehí
BACKGROUND: Closed-loop (CL) systems aims to outperform usual treatments in blood glucose control and continuous glucose monitors (CGM) are a key component in such systems. Meals represents one of the main disturbances in blood glucose control, and postprandial period (PP) is a challenging situation for both CL system and CGM accuracy. METHODS: We performed an extensive analysis of sensor's performance by numerical accuracy and precision during PP, as well as its influence in blood glucose control under CL therapy...
June 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28633520/ion-selective-nanosensor-for-photoacoustic-and-fluorescence-imaging-of-potassium
#18
Chang Heon Lee, Jeff Folz, Wuliang Zhang, Janggun Jo, Joel W Y Tan, Xueding Wang, Raoul Kopelman
Ion-selective optodes (ISOs), the optical analog of ion-selective electrodes, have played an increasingly important role in chemical and biochemical analysis. Here we extend this technique to ion-selective photo-acoustic optodes (ISPAOs) that serve at the same time as fluorescence-based ISOs, and apply it specifically to potassium (K+). Notably, the potassium ion is one of the most abundant cations in biological systems, involved in numerous physiological and pathological processes. Furthermore, it has been recently reported that the presence of abnormal extracellular potassium concentrations in tumors suppresses the immune responses and thus suppresses immunotherapy...
June 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28633081/deflagration-to-detonation-transition-in-jp-10-mist-air-mixtures-in-a-large-scale-tube
#19
Shuzhuan Li, Qingming Liu, Xu Chen, Jinxiang Huang, Jing Li
Deflagration to detonation transitions (DDTs) in JP-10 mist/air mixtures have been studied in a horizontal multiphase combustion and explosion tube with inner diameter of 199mm and length of 32.8m. The mist/air mixtures were generated by injecting liquid samples into the experimental tube. Experiments were performed at 298k and 101kPa with equivalence ratio ranged from 0.51 to 2.09. The coupling process of deflagration wave with leading shock wave and low-velocity self-sustained detonation were observed in JP-10 mist/air mixture with a concentration of 142...
June 13, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28633002/the-trpm2-channel-a-thermo-sensitive-metabolic-sensor
#20
Makiko Kashio, Makoto Tominaga
Living organisms continually experience changes in ambient temperature. In order to detect such temperature changes for adaptive behavioral responses, we evolved the ability to sense temperature. Thermosensitive transient receptor potential (TRP) channels, so-called thermo-TRPs, are involved in many physiological functions in diverse organisms and constitute important temperature sensors. One of the important roles of thermo-TRPs is detecting ambient temperature in sensory neurons. Importantly, the functional expression of thermo-TRPs is observed not only in sensory neurons but also in tissues and cells that are not exposed to drastic temperature changes, indicating that thermo-TRPs are involved in many physiological functions within the body's normal temperature range...
June 20, 2017: Channels
keyword
keyword
42810
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"