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 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.

scholarly journals Reactive Dual Magnetron Sputtering: A Fast Method for Preparing Stoichiometric Microcrystalline ZnWO4 Thin Films

Surfaces ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 106-114
Author(s):  
Yannick Hermans ◽  
Faraz Mehmood ◽  
Kerstin Lakus-Wollny ◽  
Jan P. Hofmann ◽  
Thomas Mayer ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Photoelectron Spectroscopy ◽  
Fast Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Substrates ◽  
Post Annealing ◽  
Rf Signal ◽  
First Time

Thin films of ZnWO4, a promising photocatalytic and scintillator material, were deposited for the first time using a reactive dual magnetron sputtering procedure. A ZnO target was operated using an RF signal, and a W target was operated using a DC signal. The power on the ZnO target was changed so that it would match the sputtering rate of the W target operated at 25 W. The effects of the process parameters were characterized using optical spectroscopy, X-ray diffraction, and scanning electron microscopy, including energy dispersive X-ray spectroscopy as well as X-ray photoelectron spectroscopy. It was found that stoichiometric microcrystalline ZnWO4 thin films could be obtained, by operating the ZnO target during the sputtering procedure at a power of 55 W and by post-annealing the resulting thin films for at least 10 h at 600 °C. As FTO coated glass substrates were used, annealing led as well to the incorporation of Na, resulting in n+ doped ZnWO4 thin films.

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 Mammalian Arginase Inhibitory Activity of Methanolic Extracts and Isolated Compounds from Cyperus Species

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1694
Author(s):  
Kamel Arraki ◽  
Perle Totoson ◽  
Alain Decendit ◽  
Andy Zedet ◽  
Justine Maroilley ◽  
...  
Keyword(s):  
Inhibitory Activity ◽  
Methanolic Extract ◽  
Significant Inhibition ◽  
Isolation And Identification ◽  
Vasorelaxant Effect ◽  
Methanolic Extracts ◽  
Phytochemical Investigation ◽  
Ic50 Values ◽  
First Time

Polyphenolic enriched extracts from two species of Cyperus, Cyperus glomeratus and Cyperus thunbergii, possess mammalian arginase inhibitory capacities, with the percentage inhibition ranging from 80% to 95% at 100 µg/mL and 40% to 64% at 10 µg/mL. Phytochemical investigation of these species led to the isolation and identification of two new natural stilbene oligomers named thunbergin A-B (1–2), together with three other stilbenes, trans-resveratrol (3), trans-scirpusin A (4), trans-cyperusphenol A (6), and two flavonoids, aureusidin (5) and luteolin (7), which were isolated for the first time from C.thunbergii and C. glomeratus. Structures were established on the basis of the spectroscopic data from MS and NMR experiments. The arginase inhibitory activity of compounds 1–7 was evaluated through an in vitro arginase inhibitory assay using purified liver bovine arginase. As a result, five compounds (1, 4–7) showed significant inhibition of arginase, with IC50 values between 17.6 and 60.6 µM, in the range of those of the natural arginase inhibitor piceatannol (12.6 µM). In addition, methanolic extract from Cyperus thunbergii exhibited an endothelium and NO-dependent vasorelaxant effect on thoracic aortic rings from rats and improved endothelial dysfunction in an adjuvant-induced arthritis rat model.

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 Studies on the Chemical Diversities of Secondary Metabolites Produced by Neosartorya fischeri via the OSMAC Method

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2772 ◽  
Author(s):  
You-Min Ying ◽  
Lu Huang ◽  
Ting Tian ◽  
Cui-Yu Li ◽  
Shi-Lei Wang ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Cancer Cell Line ◽  
2D Nmr ◽  
Natural Occurrence ◽  
Fungal Metabolites ◽  
Isolation And Identification ◽  
Late Step ◽  
Neosartorya Fischeri ◽  
The One ◽  
First Time

The One Strain Many Compounds (OSMAC) method was applied to explore the chemical diversities of secondary metabolites produced by Neosartorya fischeri NRRL 181. Four pyripyropenes 1–4, eight steroids 5–11, and four prenylated indole alkaloids 12–15, were obtained from the fungus cultured in petri dishes containing potato dextrose agar (PDA). 1,7,11-trideacetylpyripyropene A (1) and 1,11-dideacetyl pyripyropene A (2) were obtained and spectroscopically characterized (1D, 2D NMR, and HR-ESI-MS) from a natural source for the first time. It offered a sustainable source of these two compounds, which were usually used as starting materials in preparing pyripyropene derivatives. In addition, as compared with all the other naturally occurring pyripyropenes, 1 and 2 possessed unique acetylation patterns that did not follow the established late-step biosynthetic rules of pyripyropenes. The natural occurrence of 1 and 2 in the fungus implied that the timing and order of hydroxylation and acetylation in the late-step biosynthetic pathway of pyripyropenes remained to be revealed. The isolation and identification of 1–15 indicated that the OSMAC method could remarkably alter the metabolic profile and enrich the chemical diversities of fungal metabolites. Compounds 1–4 exhibited no obvious cytotoxicity against the triple-negative breast cancer cell line MDA-MB-231 as compared with taxol.

Lawyers in the Field

2002 ◽  
Vol 26 (3) ◽  
pp. 248-253
Author(s):  
Neil Hasser
Keyword(s):  
Drinking Water ◽  
Heat Waves ◽  
Heat Exhaustion ◽  
Physical Limit ◽  
One Step ◽  
First Time ◽  
Provide Drinking Water

The weather during the harvest season in Virginia can be brutal. During one of the worst heat waves in decades, with temperatures soaring above 100 degrees, we were notified about a farmworker named Juan who had died in the field. We left immediately for the camp to speak with other workers about the circumstances. The day before, the grower had been visited and warned by an official about failing to provide drinking water and cups for the workers, not the first time he had received warnings of field negligence. Even on days when water was available, access could be difficult. When the water truck would drive by, workers in the field had to quickly grab one of the vegetables they were picking, cut it in half to use as a drinking cup, and run after the water truck before it left for the adjoining field. We also learned about the implicit understanding between this man's crewleader and the workers: choosing when to take a rest on your own meant no work the following day. You would also be one step closer to being blacklisted from future employment. When Juan had finally reached his physical limit that day, he asked for some time to rest inside the bus, but it was too late. He later died at the hospital from what appeared to be the effects of heat exhaustion. It remains to be seen whether Juan's family will receive any compensation.

scholarly journals Ionic Liquids-Containing Silica Microcapsules: A Potential Tunable Platform for Shaping-Up Epoxy-Based Composite Materials?

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 881
Author(s):  
Ting Shi ◽  
Sébastien Livi ◽  
Jannick Duchet ◽  
Jean-François Gérard
Keyword(s):  
Electron Microscopy ◽  
Sol Gel ◽  
Diameter Distribution ◽  
Excellent Thermal Stability ◽  
Transmission Electron ◽  
Micron Size ◽  
Phosphonium Ionic Liquid ◽  
One Step ◽  
The One ◽  
First Time

In this work, silica microcapsules containing phosphonium ionic liquid (IL), denoted SiO2@IL, were successfully synthesized for the first time using the one step sol-gel method in IL/H20 emulsion. The morphologies of the obtained micron-size microcapsules, including their diameter distribution, were characterized using dynamic light scattering (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The thermal behavior of these microcapsules and the mass fraction of the encapsulated IL in the silica microcapsules were determined using thermogravimetric analysis, showing an excellent thermal stability (up to 220 °C) and highlighting that an amount of 20 wt.% of IL is contained in the silica microcapsules. In a second step, SiO2@IL microcapsules (1 wt.%) were dispersed into epoxy-amine networks to provide proof of concept of the ability of such microcapsules to act as healing agents as microcracks propagate into the epoxy networks.

One-step catalytic amination of naphthalene to naphthylamine with exceptional yield

2020 ◽  
Vol 22 (9) ◽  
pp. 2744-2749
Author(s):  
Fang Hao ◽  
Xin Wang ◽  
Linfang Huang ◽  
Wei Xiong ◽  
Pingle Liu ◽  
...  
Keyword(s):  
Mild Condition ◽  
Major Product ◽  
High Yield ◽  
Vanadium Catalysts ◽  
Catalytic Amination ◽  
One Step ◽  
First Time

This is the first time to synthesize naphthylamine from one-step naphthalene amination by vanadium catalysts with high yield under mild condition. It could obtain ∼70% yield of naphthylamine, with major product of valuable 1,5-diaminonaphthalene.

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