scholarly journals Polydimethylsiloxane diaphragm-based fiber ultrasonic sensor with high sensitivity and wide spectrum response range

AIP Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 075021
Author(s):  
Long Li ◽  
Jun Wang ◽  
Wei Wang ◽  
Diyang Wu ◽  
Ming Song ◽  
...  
Keyword(s):  
Wide Spectrum ◽  
High Sensitivity ◽  
Ultrasonic Sensor ◽  
Response Range ◽  
Spectrum Response

scholarly journals A PDMS Film Structured Optical fiber Ultrasonic Sensor with high Sensitivity and Wide Response Range characteristics

2021 ◽  
Vol 1865 (2) ◽  
pp. 022068
Author(s):  
Long Li ◽  
Shuaicheng Liu ◽  
Zhiyuan Hao ◽  
Ming Song ◽  
Guanjun Wang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Sensitivity ◽  
Ultrasonic Sensor ◽  
Pdms Film ◽  
Response Range

Strain Sensor with High Sensitivity and Large Response Range Based on Self-Assembled Elastic-Sliding Conductive Networks

2021 ◽  
Author(s):  
Haicheng Wang ◽  
Jinlin Liu ◽  
Haoao Cui ◽  
Yijian Liu ◽  
Junze Zhu ◽  
...  
Keyword(s):  
Strain Sensor ◽  
High Sensitivity ◽  
Response Range ◽  
Self Assembled ◽  
Large Response

Pollen-Shaped Hierarchical Structure for Pressure Sensors with High Sensitivity in an Ultrabroad Linear Response Range

2020 ◽  
Vol 12 (49) ◽  
pp. 55362-55371
Author(s):  
Tingting Zhao ◽  
Li Yuan ◽  
Tongkuai Li ◽  
Longlong Chen ◽  
Xifeng Li ◽  
...  
Keyword(s):  
Hierarchical Structure ◽  
Linear Response ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Response Range ◽  
Linear Response Range

Hollow Cubic Cu2-xS/Fe-POMs/AgVO3 Dual Z-Scheme Heterojunctions with Wide-Spectrum Response and Enhanced Photothermal and Photocatalytic-Fenton Performance

2021 ◽  
pp. 120628
Author(s):  
Yalu Qiu ◽  
Zipeng Xing ◽  
Meijun Guo ◽  
Zhenzi Li ◽  
Nan Wang ◽  
...  
Keyword(s):  
Wide Spectrum ◽  
Spectrum Response

A Dynamic Calibration Test on PVDF Film Pressure Sensor with Dropping Hammer Method

2014 ◽  
Vol 933 ◽  
pp. 548-553 ◽  
Author(s):  
Yong Qiang Wang ◽  
Ying Lin Xiao
Keyword(s):  
Polyvinylidene Fluoride ◽  
Piezoelectric Materials ◽  
Dynamic Pressure ◽  
High Sensitivity ◽  
Pvdf Film ◽  
Piezoelectric Film ◽  
High Mechanical Strength ◽  
Response Range ◽  
New Type ◽  
Shock Wave Pressure

Polyvinylidene Fluoride (referred to as PVDF) piezoelectric film is a new type of polymer piezoelectric materials. Because of its light weight, thin thickness, high sensitivity, high mechanical strength, wide frequency response range and other advantages, it has the application prospect in the explosion field. In this article, film sensors were made based on the PVDF piezoelectric film, and its role in the sensors is the sensitive element. The result of the low dynamic pressure calibration tests showed that it has a very high linear degree and good reproducibility, so that it can be used for low-pressure section of the shock wave pressure measurement.

scholarly journals Elucidation of a PTS–Carbohydrate Chemotactic Signal Pathway inEscherichia coliUsing a Time-resolved Behavioral Assay

1999 ◽  
Vol 10 (4) ◽  
pp. 1133-1146 ◽  
Author(s):  
Renate Lux ◽  
V. Ranjit N. Munasinghe ◽  
Fred Castellano ◽  
Joseph W. Lengeler ◽  
John E. T. Corrie ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Response Regulator ◽  
High Sensitivity ◽  
Signal Pathway ◽  
Response Threshold ◽  
Computer Assisted ◽  
Time Resolved ◽  
Response Range ◽  
Transport Mutants ◽  
Signaling Activity

Chemotaxis of Escherichia coli toward phosphotransferase systems (PTSs)–carbohydrates requires phosphoenolpyruvate-dependent PTSs as well as the chemotaxis response regulator CheY and its kinase, CheA. Responses initiated by flash photorelease of a PTS substrates d-glucose and its nonmetabolizable analog methyl α-d-glucopyranoside were measured with 33-ms time resolution using computer-assisted motion analysis. This, together with chemotactic mutants, has allowed us to map out and characterize the PTS chemotactic signal pathway. The responses were absent in mutants lacking the general PTS enzymes EI or HPr, elevated in PTS transport mutants, retarded in mutants lacking CheZ, a catalyst of CheY autodephosphorylation, and severely reduced in mutants with impaired methyl-accepting chemotaxis protein (MCP) signaling activity. Response kinetics were comparable to those triggered by MCP attractant ligands over most of the response range, the most rapid being 11.7 ± 3.1 s−1. The response threshold was <10 nM for glucose. Responses to methyl α-d-glucopyranoside had a higher threshold, commensurate with a lower PTS affinity, but were otherwise kinetically indistinguishable. These facts provide evidence for a single pathway in which the PTS chemotactic signal is relayed rapidly to MCP–CheW–CheA signaling complexes that effect subsequent amplification and slower CheY dephosphorylation. The high sensitivity indicates that this signal is generated by transport-induced dephosphorylation of the PTS rather than phosphoenolpyruvate consumption.

AgInSe2-Sensitized ZnO Nanoflower Wide-Spectrum Response Photoelectrochemical/Visual Sensing Platform via Au@Nanorod-Anchored CeO2 Octahedron Regulated Signal

2020 ◽  
Vol 92 (11) ◽  
pp. 7604-7611 ◽  
Author(s):  
Shaopeng Wang ◽  
Fangfang Wang ◽  
Cuiping Fu ◽  
Yina Sun ◽  
Jinge Zhao ◽  
...  
Keyword(s):  
Wide Spectrum ◽  
Visual Sensing ◽  
Sensing Platform ◽  
Spectrum Response

Frontotemporal dementia is a complex disorder with a wide spectrum of clinical symptoms. Personalized medicine and gene therapy are promising strategies for treatment

2021 ◽  
Author(s):  
Moataz Dowaidar
Keyword(s):  
Frontotemporal Dementia ◽  
Clinical Symptoms ◽  
Wide Spectrum ◽  
High Sensitivity ◽  
Ubiquitin Proteasome System ◽  
Assessment Instruments ◽  
Disease Modifying Drugs ◽  
Mutation Carriers ◽  
Definition Of ◽  
Tau Aggregation

Frontotemporal dementia is an uncommon and complex sickness with a wide spectrum of clinical symptoms, making drug development for the condition challenging. Frontal and temporal lobe responsibilities, as well as the level to which these activities are affected in certain diseases, contribute to clinical heterogeneity. Unfortunately, the available data on symptomatic treatments is drawn from limited case studies and RCTs, which include persons with the same FTD diagnosis. Advances in the identification of new FTD treatments demand the construction of huge clinical networks that are built on collaborative, multicenter research. One of the primary drawbacks of the present studies is the variety of the assessment instruments utilized, such as the FBI, Cambridge Behavioral Inventory, NPI, and BEHAVE-AD, some of which were not originally established for FTD but were first validated for other kinds of dementia, such as AD. The FBI was shown to have high sensitivity and specificity in discriminating between bvFTD and non-FTD, whereas the NPI score did not.The new definition of Alzheimer's disease was changed from a clinical diagnostic to a biomarker-based diagnostic, although we are still a long way from providing a scientific description of FTD. In the future, there might be an increased likelihood of recognizing symptoms or signs in clinical studies because of a revision to the criteria of FTD.Treatment techniques should be customized to individual patient subgroups or mutation carriers. Currently, as a treatment for FTD-tau, antisense oligonucleotide inhibition of MAPT, tau phosphorylation inhibition, microtubule stability, and inhibition of tau aggregation are all being investigated. It is possible to inhibit TDP-43 aggregation, enhance progranulin levels, activate the autophagy–lysosome system, or modify the ubiquitin-proteasome system in FTD-TDP. Despite these breakthroughs, the etiology and genetics of FTD remain unclear. Additional genetic pathways and loci associated with immune dysregulation and inflammation have recently been discovered, furthering the search for possible treatment targets. Also, knowing who the mutation carriers are early on allows researchers to test disease-modifying drugs earlier, when cognitive problems may still be reversible.Research gaps in the etiology and clinical characterization of FTD should be resolved, as well as the production of precise biomarkers and specialized evaluation methodologies. Desharnais and colleagues have created a checklist to assist standardize future FTD clinical trials and boost the probability of successful findings.

Electrogenerated chemiluminescence peptide-based bioassay

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Honglan Qi ◽  
Qian Dang ◽  
Manman Dong ◽  
Hongfang Gao ◽  
Min Li
Keyword(s):  
High Sensitivity ◽  
Clinical Analysis ◽  
Electrogenerated Chemiluminescence ◽  
Electrode Surfaces ◽  
Recognition Element ◽  
Response Range ◽  
Future Challenges ◽  
History Of ◽  
Dynamic Concentration ◽  
Molecular Recognition Element

AbstractElectrogenerated chemiluminescence (ECL) involves the generation of species at electrode surfaces that then undergo electron-transfer reactions to form excited states that emit light. The ECL method is becoming an increasingly promising method in the life sciences, environmental analysis, and clinical analysis, owing to its good selectivity, high sensitivity, wide dynamic concentration response range, and potential and spatial controllability. Here, we give a mini-review on the advances of the ECL peptide-based bioassay using peptide as the molecular recognition element. First, a general history of ECL development is presented. Then, the general strategies of the ECL peptide-based bioassay are reviewed. Particular attention is paid to the related progress in the last 5 years. Finally, we conclude with the future challenges and prospects in the development of the ECL peptide-based bioassay.

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