Oxygen vacancy confined nickel cobaltite nanostructures as an excellent interface for the enzyme-free electrochemical sensing of extracellular H2O2 secreted from live cells

2020 ◽  
Vol 44 (33) ◽  
pp. 14050-14059
Author(s):  
Paramasivam Balasubramanian ◽  
Shao-Bin He ◽  
Arumugam Jansirani ◽  
Hao-Hua Deng ◽  
Hua-Ping Peng ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Research Interest ◽  
Electrochemical Sensing ◽  
Live Cells ◽  
Nickel Cobaltite

Oxygen vacancy (OV) manufacturing is an effective way to boost the efficiency of a catalyst; therefore, the development of OV-rich catalysts has attracted substantial research interest.

Oxygen-Vacancy and Surface Modulation of Ultrathin Nickel Cobaltite Nanosheets as a High-Energy Cathode for Advanced Zn-Ion Batteries

2018 ◽  
Vol 30 (33) ◽  
pp. 1802396 ◽  
Author(s):  
Yinxiang Zeng ◽  
Zhengzhe Lai ◽  
Yi Han ◽  
Haozhe Zhang ◽  
Shilei Xie ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
High Energy ◽  
Nickel Cobaltite ◽  
Surface Modulation

scholarly journals Oxygen vacancy mediated step-scheme heterojunction of WO2.9/g-C3N4 for efficient electrochemical sensing of 4-nitrophenol

2021 ◽  
pp. 100175
Author(s):  
Xiaomiao He ◽  
Saishuai Bai ◽  
Jizhou Jiang ◽  
Wee-Jun Ong ◽  
Jiahe Peng ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Electrochemical Sensing

4-dimensional, high-resolution imaging of living cells

1992 ◽  
Vol 50 (1) ◽  
pp. 416-417
Author(s):  
Shinya Inoué
Keyword(s):  
Light Microscope ◽  
Living Cells ◽  
Live Cells ◽  
Video Tape ◽  
Active Living ◽  
High Resolution Imaging ◽  
3 Dimensional ◽  
Dynamic Architecture ◽  
Resolution Imaging ◽  
Disk Memory

This paper reports progress of our effort to rapidly capture, and display in time-lapsed mode, the 3-dimensional dynamic architecture of active living cells and developing embryos at the highest resolution of the light microscope. Our approach entails: (A) real-time video tape recording of through-focal, ultrathin optical sections of live cells at the highest resolution of the light microscope; (B) repeat of A at time-lapsed intervals; (C) once each time-lapsed interval, an image at home focus is recorded onto Optical Disk Memory Recorder (OMDR); (D) periods of interest are selected using the OMDR and video tape records; (E) selected stacks of optical sections are converted into plane projections representing different view angles (±4 degrees for stereo view, additional angles when revolving stereos are desired); (F) analysis using A - D.

Multi-mode light microscopy of microtubule assembly dynamics and chromosome movement in vivo and In vitro

1996 ◽  
Vol 54 ◽  
pp. 730-731
Author(s):  
E. D. Salmon ◽  
J. C. Waters ◽  
C. Waterman-Storer
Keyword(s):  
Imaging System ◽  
Ccd Camera ◽  
Transmitted Light ◽  
Microtubule Assembly ◽  
Live Cells ◽  
Optical Efficiency ◽  
Multiple Band ◽  
Multi Mode

We have developed a multi-mode digital imaging system which acquires images with a cooled CCD camera (Figure 1). A multiple band pass dichromatic mirror and robotically controlled filter wheels provide wavelength selection for epi-fluorescence. Shutters select illumination either by epi-fluorescence or by transmitted light for phase contrast or DIC. Many of our experiments involve investigations of spindle assembly dynamics and chromosome movements in live cells or unfixed reconstituted preparations in vitro in which photodamage and phototoxicity are major concerns. As a consequence, a major factor in the design was optical efficiency: achieving the highest image quality with the least number of illumination photons. This principle applies to both epi-fluorescence and transmitted light imaging modes. In living cells and extracts, microtubules are visualized using X-rhodamine labeled tubulin. Photoactivation of C2CF-fluorescein labeled tubulin is used to locally mark microtubules in studies of microtubule dynamics and translocation. Chromosomes are labeled with DAPI or Hoechst DNA intercalating dyes.

Characterization of a Motile Cellular Domain Arising During the Amoebo-Flagellate Transformation of Physarum Polycephalum

1980 ◽  
Vol 38 ◽  
pp. 552-553
Author(s):  
K.I. Pagh ◽  
M.R. Adelman
Keyword(s):  
Cell Shape ◽  
Physarum Polycephalum ◽  
Slime Mold ◽  
Live Cells ◽  
Cellular Domain

Unicellular amoebae of the slime mold Physarum polycephalum undergo marked changes in cell shape and motility during their conversion into flagellate swimming cells (l). To understand the processes underlying motile activities expressed during the amoebo-flagellate transformation, we have undertaken detailed investigations of the organization, formation and functions of subcellular structures or domains of the cell which are hypothesized to play a role in movement. One focus of our studies is on a structure, termed the “ridge” which appears as a flattened extension of the periphery along the length of transforming cells (Fig. 1). Observations of live cells using Nomarski optics reveal two types of movement in this region:propagation of undulations along the length of the ridge and formation and retraction of filopodial projections from its edge. The differing activities appear to be associated with two characteristic morphologies, illustrated in Fig. 1.

Design Capability for Science-based Innovation

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
ROTHKÖTTER Stefanie ◽  
Craig C. GARNER ◽  
Sándor VAJNA
Keyword(s):  
Literature Review ◽  
Scientific Discovery ◽  
New Technology ◽  
Academic Research ◽  
Research Interest ◽  
Design Practice ◽  
Design Technology ◽  
Innovation Potential ◽  
Design Integration ◽  
Cultural Constraints

In light of a growing research interest in the innovation potential that lies at the inter­section of design, technology, and science, this paper offers a literature review of design initiatives centered on scientific discovery and invention. The focus of this paper is on evidence of design capabilities in the academic research environment. The results are structured along the Four Orders of Design, with examples of design-in-science initiatives ranging from (1) the design of scientific figures and (2) laboratory devices using new technology to (3) interactions in design workshops for scientists and (4) inter­disciplinary design labs. While design capabilities have appeared in all four orders of design, there are barriers and cultural constraints that have to be taken into account for working at or researching these creative intersections. Modes of design integration and potentially necessary adaptations of design practice are therefore also highlighted.

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