Yam Code
Sign up
Login
New paste
Home
Trending
Archive
English
English
Tiếng Việt
भारत
Sign up
Login
New Paste
Browse
Antifungal probable involving zinc in opposition to foliage area illness throughout soup spice up brought on by Alternaria alternata. The detection of blood glucose level receives much attention, because diabetes has become one of the significant threats to human health worldwide. In this paper, we described a novel core-shell MOF@MOF composite-based electrochemical sensor for nonenzymatic glucose sensing in alkaline media. The core-shell UiO-67@Ni-MOF composites were synthesized by internal extended growth of shell Ni-MOF on the core UiO-67 under polyvinylpyrrolidone (PVP) regulation. In the sensor system, UiO-67 with large specific surface area and good conductivity was used to accelerate the rate of electron transfer of UiO-67@Ni-MOF. Ni-MOF served as an electrocatalytic material due to excellent electrochemical activity toward glucose oxidation. The morphology, structure, and electrochemical performance of UiO-67@Ni-MOF composites were characterized. To demonstrate the detection performance of the UiO-67@Ni-MOF composite-based sensor, it was successfully used for nonenzymatic glucose sensing. The results indicated that UiO-67@Ni-MOF composites exhibited high electrocatalytic activity toward glucose oxidation compared with individual UiO-67 and Ni-MOF. Moreover, the sensor possessed high sensitivity and selectivity for real-time amperometric detection of glucose. It performed glucose level detection in human serum samples with acceptable reliability and accuracy. The present work suggested that the as-fabricated sensor is promising for nonenzymatic glucose sensing in real samples and holds great potential as an alternative tool for the rapid diagnosis of diabetes and for monitoring blood glucose levels daily. A novel air sampler has been designed containing a sorbent based on UVM-7 mesoporous silica doped with Ti. The sorbent has been applied for the determination of organophosphorus pesticides in occupational air, followed by gas chromatography with mass spectrometry detection. Thus, several silica materials with different structures (mesoporous UVM-7 and microporous xerogels) were synthesized, and modified with the addition of Ti and Fe. The structure of these materials was proved by transmission electronic microscopy, energy-dispersive X-ray, X-ray diffraction, nitrogen adsorption-desorption and UV-Vis and Raman spectroscopy. The potential of these materials for the retention of pesticides was evaluated and Ti25-UVM-7 was selected as the best solid phase for analyte sorption. Then, several sampling parameters were optimized and analytical features such as breakthrough volume were determined. Using the designed samplers, quantitative retentions were achieved with recoveries in the range 93-107% for all analytes except for diazinon (82%). RSD values below 13% were obtained. Likewise, the sensitivity of the method was studied, and limits of quantification below 0.5 μg m-3 were obtained for all pesticides. The reusability of the material was also proved. The developed procedure has been applied to the air sampling and occupational risk assessment, during and after methyl-chlorpyrifos application in orange plantations. High concentrations and exposure rates above the limit value for ensure safe work conditions were obtained. At the same time, the air was sampled with XAD-2 samplers as a reference method, and results obtained with both devices were statistically comparable. Spiropyrans are a class of photochromic compounds that feature two main isoforms, a closed spiropyran (SP) and an open merocyanine (MC), which are inter-switchable with UV and visible light. The double bond containing MC isomer has several resonance forms with different optical spectra. Consequently, the overall spectral characteristic of the spiropyran solution depends on the relative contribution of each resonance form. In addition, the reversible changes of the absorbance or fluorescence spectra of MC are dictated by the environment. https://www.selleckchem.com/MEK.html By utilizing these properties, spiropyran and its derivatives have been employed to monitor a variety of molecules and ions that can alter the resonance forms of MC. In this review, we provide a comprehensive discussion on a range of species that can be detected by spiropyran including metal ions, anions, acids, solvents, and even biomolecules, the major analytical detection mechanisms involved, and the novelty of such techniques. This study establishes spiropyran as a versatile platform for the detection of both organic and inorganic target molecules. Non-alcoholic fatty liver disease (NAFLD) is a chronic disorder progressing from an initial benign accumulation of fat (NAFL) towards steatohepatitis (NASH), a degenerative form that can lead to liver cirrhosis and cancer. The development of non-invasive, rapid and accurate method to diagnose NASH is of high clinical relevance. Surface-enhanced Raman spectroscopy (SERS) of plasma was tested as a method to distinguish NAFL from NASH. SERS spectra from plasma of female patients diagnosed with NAFL (n = 32) and NASH (n = 35) were obtained in few seconds, using a portable Raman spectrometer. The sample consisted of 5 μL of biofluid deposited on paper coated with Ag nanoparticles. The spectra show consistent differences between the NAFL and NASH patients, with the uric acid/hypoxanthine band area ratio statistically different (p-value less then 0.001) between the two groups. The average figures of merit for a diagnostic test based on these ratios, as derived from a repeated 4-fold cross-validation of a logistic regression model, are all between 0.73 and 0.79, with an average area under the curve of 0.81. https://www.selleckchem.com/MEK.html We conclude that SERS may be a reliable and rapid method to discriminate NAFLD from NASH. Gold nanoparticles-based molecular beacon (Au NPs-MB), due to its extraordinary highly-quenching efficiency for fluorophores, has been extensively investigated and widely used for bioimaging and bioassay. However, apart from irreversible aggregation during the "aging" step, the preparation of Au NPs-MB often suffers from relatively poor salt stability, limiting its further in vivo application. Herein, Au NPs decorated magnetic microbeads was developed to construct a novel magnetic MB for DNA assay, which not only totally solved the aggregation problem of Au NPs, but also exhibited robust stability in buffer solution. Most importantly, the fluorescence signal of each microbeads could be collected individually, realizing single microbeads-based DNA imaging, and the detection limit for target DNA could reach 0.1 nM with the detection range of 0.2-20 nM. More importantly, because the magnetic microbeads with three sizes could be readily distinguished by flow cytometry, the employed three types of hairpin DNA probes can be labelled with the same dye FITC without fluorescence cross-interference.
Paste Settings
Paste Title :
[Optional]
Paste Folder :
[Optional]
Select
Syntax Highlighting :
[Optional]
Select
Markup
CSS
JavaScript
Bash
C
C#
C++
Java
JSON
Lua
Plaintext
C-like
ABAP
ActionScript
Ada
Apache Configuration
APL
AppleScript
Arduino
ARFF
AsciiDoc
6502 Assembly
ASP.NET (C#)
AutoHotKey
AutoIt
Basic
Batch
Bison
Brainfuck
Bro
CoffeeScript
Clojure
Crystal
Content-Security-Policy
CSS Extras
D
Dart
Diff
Django/Jinja2
Docker
Eiffel
Elixir
Elm
ERB
Erlang
F#
Flow
Fortran
GEDCOM
Gherkin
Git
GLSL
GameMaker Language
Go
GraphQL
Groovy
Haml
Handlebars
Haskell
Haxe
HTTP
HTTP Public-Key-Pins
HTTP Strict-Transport-Security
IchigoJam
Icon
Inform 7
INI
IO
J
Jolie
Julia
Keyman
Kotlin
LaTeX
Less
Liquid
Lisp
LiveScript
LOLCODE
Makefile
Markdown
Markup templating
MATLAB
MEL
Mizar
Monkey
N4JS
NASM
nginx
Nim
Nix
NSIS
Objective-C
OCaml
OpenCL
Oz
PARI/GP
Parser
Pascal
Perl
PHP
PHP Extras
PL/SQL
PowerShell
Processing
Prolog
.properties
Protocol Buffers
Pug
Puppet
Pure
Python
Q (kdb+ database)
Qore
R
React JSX
React TSX
Ren'py
Reason
reST (reStructuredText)
Rip
Roboconf
Ruby
Rust
SAS
Sass (Sass)
Sass (Scss)
Scala
Scheme
Smalltalk
Smarty
SQL
Soy (Closure Template)
Stylus
Swift
TAP
Tcl
Textile
Template Toolkit 2
Twig
TypeScript
VB.Net
Velocity
Verilog
VHDL
vim
Visual Basic
WebAssembly
Wiki markup
Xeora
Xojo (REALbasic)
XQuery
YAML
HTML
Paste Expiration :
[Optional]
Never
Self Destroy
10 Minutes
1 Hour
1 Day
1 Week
2 Weeks
1 Month
6 Months
1 Year
Paste Status :
[Optional]
Public
Unlisted
Private (members only)
Password :
[Optional]
Description:
[Optional]
Tags:
[Optional]
Encrypt Paste
(
?
)
Create New Paste
You are currently not logged in, this means you can not edit or delete anything you paste.
Sign Up
or
Login
Site Languages
×
English
Tiếng Việt
भारत