One-step synthesis of an antimicrobial framework based on covalently cross-linked chitosan/lignosulfonate (CS@LS) nanospheres

2020 ◽  
Vol 22 (3) ◽  
pp. 678-687 ◽  
Author(s):  
Ravi P. Pandey ◽  
Kashif Rasool ◽  
P. Abdul Rasheed ◽  
Tricia Gomez ◽  
Mujaheed Pasha ◽  
...  
Keyword(s):  
Cross Linking ◽  
One Step ◽  
First Time

Herein, renewable and uniform nanospheres based on chitosan (CS) and lignosulfonate (LS): (CS@LS) were designed for the first time through a simple one-step covalent cross-linking protocol.

Constructing multifunctional MOF@rGO hydro-/aerogels by the self-assembly process for customized water remediation

2017 ◽  
Vol 5 (23) ◽  
pp. 11873-11881 ◽  
Author(s):  
Jiajun Mao ◽  
Mingzheng Ge ◽  
Jianying Huang ◽  
Yuekun Lai ◽  
Changjian Lin ◽  
...  
Keyword(s):  
Self Assembly ◽  
Synergistic Effects ◽  
Chemical Reduction ◽  
The Self ◽  
Water Remediation ◽  
Cross Linking ◽  
General Strategy ◽  
Assembly Process ◽  
One Step ◽  
First Time

We first time report a general strategy for one-step fabrication of a ZIF-8 MOF/RGO hydrogel, with the synergistic effects of chemical reduction and cross-linking by metal ions.

scholarly journals Formulation and preparation of stable cross-linked alginate–zinc nanoparticles in the presence of a monovalent salt

Soft Matter ◽  
2015 ◽  
Vol 11 (28) ◽  
pp. 5765-5774 ◽  
Author(s):  
Sara Pistone ◽  
Dafina Qoragllu ◽  
Gro Smistad ◽  
Marianne Hiorth
Keyword(s):  
Divalent Cation ◽  
Cross Linking ◽  
Mechanism Of Formation ◽  
Step Method ◽  
Zinc Nanoparticles ◽  
Monovalent Salt ◽  
One Step ◽  
First Time

Stable alginate nanoparticles have been prepared for the first time by ionic cross-linking with a divalent cation through a simple one-step method. The mechanism of formation was identified.

scholarly journals The Effect of Surfactant-Modified Montmorillonite on the Cross-Linking Efficiency of Polysiloxanes

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2623
Author(s):  
Monika Wójcik-Bania ◽  
Jakub Matusik
Keyword(s):  
Total Pore Volume ◽  
Cross Linking ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
The Cross ◽  
Chain Lengths ◽  
First Time ◽  
Substituent Influence ◽  
Benzyl Substituent

Polymer–clay mineral composites are an important class of materials with various applications in the industry. Despite interesting properties of polysiloxanes, such matrices were rarely used in combination with clay minerals. Thus, for the first time, a systematic study was designed to investigate the cross-linking efficiency of polysiloxane networks in the presence of 2 wt % of organo-montmorillonite. Montmorillonite (Mt) was intercalated with six quaternary ammonium salts of the cation structure [(CH3)2R’NR]+, where R = C12, C14, C16, and R’ = methyl or benzyl substituent. The intercalation efficiency was examined by X-ray diffraction, CHN elemental analysis, and Fourier transform infrared (FTIR) spectroscopy. Textural studies have shown that the application of freezing in liquid nitrogen and freeze-drying after the intercalation increases the specific surface area and the total pore volume of organo-Mt. The polymer matrix was a poly(methylhydrosiloxane) cross-linked with two linear vinylsiloxanes of different siloxane chain lengths between end functional groups. X-ray diffraction and transmission electron microscopy studies have shown that the increase in d-spacing of organo-Mt and the benzyl substituent influence the degree of nanofillers’ exfoliation in the nanocomposites. The increase in the degree of organo-Mt exfoliation reduces the efficiency of hydrosilylation reaction monitored by FTIR. This was due to physical hindrance induced by exfoliated Mt particles.

scholarly journals Electrochromic Performance and Capacitor Performance of α-MoO3 Nanorods Fabricated by a One-Step Procedure

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 783
Author(s):  
Ying Duan ◽  
Chen Wang ◽  
Jian Hao ◽  
Yang Jiao ◽  
Yanchao Xu ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Average Diameter ◽  
Fast Response ◽  
Cycle Stability ◽  
Electrochromic Devices ◽  
Step Procedure ◽  
One Step ◽  
Supercapacitor Performance ◽  
First Time ◽  
Prepared Nanorods

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.

One-step synthesis of well-dispersed polypyrrole copolymers under gamma-ray irradiation

2021 ◽  
Vol 12 (5) ◽  
pp. 645-649
Author(s):  
Yu Gu ◽  
Yuqing Qiao ◽  
Yusen Meng ◽  
Ming Yu ◽  
Bowu Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gamma Ray ◽  
Gamma Ray Irradiation ◽  
One Step ◽  
First Time

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.

scholarly journals Additional evidence for a proform to tropoelastin from chick aorta

1979 ◽  
Vol 177 (2) ◽  
pp. 559-567 ◽  
Author(s):  
C S Heng-Khoo ◽  
R B Rucker ◽  
K W Buckingham
Keyword(s):  
Basic Protein ◽  
Cross Linking ◽  
Protein Subunit ◽  
Deficient Diet ◽  
Culture In Vitro ◽  
One Step

Evidence is presented for the presence of precursor to tropoelastin in chick arterial extracts. The precursor is approx. 100 000 daltons in size. It is suggested to be a precursor to tropoelastin (72 000 daltons). This protein may be observed in culture in vitro if appropriate precautions are taken to inhibit proteolysis. Once synthesized, it appears to be converted into tropoelastin within 10–20 min. The protein may also be detected in vivo. When 1-day-old cockerels were fed on a copper-deficient diet (less than 1 p.p.m. to inhibit cross-linking) containing epsilon-aminohexanoic acid (0.2%) to retard proteolysis and then injected wiht [3H]valine, extraction of arterial proteins 12h after injection resulted in detection of two major peaks of [3H]valine-labelled protein with pI values of pH 7.0 and 5.0 respectively. The protein that focused at pH 7.0 was estimated to be about 100 000 daltons in size and could be shown to be converted into a more basic protein with the properties of tropoelastin. It is speculated that the protein with pI 5.0 may be yet another extension peptide. The data appear to be in keeping with similar observations by ourselves and others that a proform of tropoelastin exists, and, in at least one step before conversion into tropoelastin, exists as a 100 000-dalton protein subunit.

The application of inexpensive and synthetic simple electrocatalyst CuFe-MoC@NG in immunosensor

The Analyst ◽  
2021 ◽  
Author(s):  
Lisha Mei ◽  
Wentang Zhao ◽  
Yiju Song ◽  
Li Zhang ◽  
Mengmeng Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Precious Metal ◽  
Doped Graphene ◽  
One Step ◽  
Metal Materials ◽  
First Time

In this study, we used inexpensive and synthetic simple electrocatalysts replacement conventional precious metal materials to reduce hydrogen peroxide (H2O2). We first time developed N-doped graphene-coated CuFe@MoC using one-step calcination...

Facile one-step mechanochemical synthesis of [Cu(tu)]Cl·1/2H2O nanobelts for high-performance supercapacitor

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38527-38532 ◽  
Author(s):  
Di Guo ◽  
Hongxu Guo ◽  
Yingchang Ke ◽  
Dongfang Wang ◽  
Jianhua Chen ◽  
...  
Keyword(s):  
Mechanochemical Synthesis ◽  
Electrode Material ◽  
High Performance ◽  
Mechanochemical Process ◽  
One Step ◽  
First Time

A facile one-step mechanochemical process from CuCl2·2H2O and thiourea to fabricate novel [Cu(tu)]Cl·1/2H2O nanobelts has been observed for the first time, and the nanobelts were used as an electrode material for a supercapacitor.

scholarly journals Isolation and Identification of Vibrio cholerae causes Epidemic cholera 2007 in Iraq by Rapid Method (Immunochromatographic one step rapid visual test) and comparing it with the traditional Bacterlogical Methods

2011 ◽  
Vol 8 (1) ◽  
pp. 29-34
Author(s):  
Baghdad Science Journal
Keyword(s):  
Vibrio Cholerae ◽  
Rapid Method ◽  
Fast Method ◽  
Visual Test ◽  
Cultural Characteristics ◽  
Isolation And Identification ◽  
One Step ◽  
Anti Body ◽  
First Time ◽  
Cultural Media

This study was for searching for Cholera Bacteria serotype which causes epidemiology Cholera in the 2007 in a fast method which contains (Rapid Visual Test) (Crystal V.C.) which was used for the first time in Iraq to diagnosis of Cholera Bacteria & compared with the traditional bacteriology method. The Cholera disease is one of the most dangerous epidemiological diseases which lead to death with a percentage of (50 – 70) % in the severe cases for untreated patients . For this purpose, 100 samples of stool from the patients from a (13) hospitals in Baghdad Governorate in the period from August to the end of December. The Cholera was diagnosis in two methods, 1st method was the fast method using the nitrocellulose which is coated with anti-body of Cholera Bacteria .The results was compared with the 2nd method which depends on the cultural characteristics of the cultural media, also the bacteria was diagnosis using the biochemical inspects by the system of API 20E in addition to the using of antisera to specify serotype& sub-serotype ( Monovalent, Polyvalent(O1) . Also, the relation between the disease & the months in the year in which the disease appear was studied. The results show the ability to isolate & identifecate (78) isolate for the serotype (01) in the fast method ( Rapid Visual Test ) ( Crystal V-C ) , & after the bacteriology inspects on these (78) isolate the all isolates were belongs for Cholera Bacteria of the serotype (01) till the sub-serotype , all the (78) isolates were belongs to the sub-serotype (Inaba). The results show, the most infection was in September (36) , & October (22).

scholarly journals Update on Simultaneous Topo-guided Photorefractive Keratectomy Immediately Followed by Corneal Collagen Cross-linking for Treatment of Progressive Keratoconus

2012 ◽  
Vol 1 (3) ◽  
pp. 185-189 ◽  
Author(s):  
George Kymionis ◽  
Sonia Yoo ◽  
Vardhaman Kankariya ◽  
George Kontadakis
Keyword(s):  
Basic Problem ◽  
Corneal Transplantation ◽  
New Combination ◽  
Photorefractive Keratectomy ◽  
Cross Linking ◽  
Effective Technique ◽  
Step Procedure ◽  
One Step ◽  
Collagen Cross Linking ◽  
Corneal Collagen

ABSTRACT Corneal collagen cross-linking (CXL) is a safe and effective technique for the management of corneal ecstatic disorders. It has been proven that CXL is effectual in stopping the progression of keratoconus quasi ‘freezing’ the cornea and in many cases avoiding corneal transplantation. Nevertheless, patients’ basic problem, which is the deterioration of their vision due to irregular astigmatism, remains. CXL combined with topography-guided photorefractive keratectomy (PRK) has been developed in order to achieve an important goal. To offer patients stability of their disorder and at the same time to assist them in achieving a functional vision by improving topographic outcomes. This article discusses update on this new combination therapy in the form of topo-guided PRK immediately followed by CXL as one-step procedure for treatment of progressive keratoconus. How to cite this article Kankariya V, Kymionis G, Kontadakis G, Yoo S. Update on Simultaneous Topo-guided Photorefractive Keratectomy Immediately Followed by Corneal Collagen Cross- linking for Treatment of Progressive Keratoconus. Int J Kerat Ect Cor Dis 2012;1(3):185-189.

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