scholarly journals ÍNDICE SPAD EM ALGODOEIRO HERBÁCEO EM FUNÇÃO DA APLICAÇÃO DE SULFATO DE NÍQUEL/ SPAD INDEX IN HERBACEOUS COTTON IN FUNCTION OF THE NICKEL SULFATE APPLICATION

2020 ◽  
Vol 6 (12) ◽  
pp. 99833-99838
Author(s):  
Patrícia de Almeida ◽  
Enes Furlani Júnior ◽  
Amanda Pereira Paixão ◽  
Raiana Crepaldi de Faria Nocchi ◽  
Noemi Cristina de Souza Vieira ◽  
...  
Keyword(s):  
Nickel Sulfate ◽  
Sulfate Application

scholarly journals Keratinocytes Regulate the Threshold of Inflammation by Inhibiting T Cell Effector Functions

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1606
Author(s):  
Peter Seiringer ◽  
Stefanie Eyerich ◽  
Kilian Eyerich ◽  
Daniela Dittlein ◽  
Anna Caroline Pilz ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
T Cell ◽  
Cytokine Production ◽  
Nickel Sulfate ◽  
Human Keratinocytes ◽  
T Cell Proliferation ◽  
Effector Functions ◽  
The Impact ◽  
Cell Effector

Whilst the importance of keratinocytes as a first-line defense has been widely investigated, little is known about their interactions with non-resident immune cells. In this study, the impact of human keratinocytes on T cell effector functions was analyzed in an antigen-specific in vitro model of allergic contact dermatitis (ACD) to nickel sulfate. Keratinocytes partially inhibited T cell proliferation and cytokine production. This effect was dependent on the keratinocyte/T cell ratio and was partially reversible by increasing the number of autologous dendritic cells. The inhibition of T cell proliferation by keratinocytes was independent of the T cell subtype and antigen presentation by different professional antigen-presenting cells. Autologous and heterologous keratinocytes showed comparable effects, while the fixation of keratinocytes with paraformaldehyde abrogated the immunosuppressive effect. The separation of keratinocytes and T cells by a transwell chamber, as well as a cell-free keratinocyte supernatant, inhibited T cell effector functions to the same amount as directly co-cultured keratinocytes, thus proving that soluble factor/s account for the observed suppressive effects. In conclusion, keratinocytes critically control the threshold of inflammatory processes in the skin by inhibiting T cell proliferation and cytokine production.

scholarly journals Surface-Enhanced Infrared Absorption of o-Nitroaniline on Nickel Nanoparticles Synthesized by Electrochemical Deposition

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yufang Niu ◽  
Jie Yao ◽  
Keyu Wang
Keyword(s):  
Infrared Absorption ◽  
Indium Tin Oxide ◽  
Nickel Nanoparticles ◽  
Ph Value ◽  
Glass Plate ◽  
Nickel Sulfate ◽  
Nickel Chloride ◽  
Attenuated Total Reflection ◽  
Enhancement Effect ◽  
Surface Enhanced

Nickel nanoparticles were electrochemically deposited on indium-tin oxide (ITO) coated glass plate in a modified Watt’s electrolyte. The surface-enhanced infrared absorption (SEIRA) effect of the nanoparticles was evaluated by attenuated total reflection spectroscopy (ATR-FTIR) using o-nitroaniline as a probe molecule. Electrodeposition parameters such as deposition time, pH value, and the type of surfactants were investigated. The morphology and the microstructure of the deposits were characterized by the field emission scanning electron microscope (FESEM) and the atomic force microscope (AFM), respectively. The results indicate that the optimum parameters were potential of 1.3 V, time of 30 s, and pH of 8.92 in the solution of 0.3756 mol/L diethanolamine, 0.1 mol/L nickel sulfate, 0.01 mol/L nickel chloride, and 0.05 mol/L boric acid. The FESEM observation shows that the morphology of nickel nanoparticles with best enhancement effect is spherical and narrowly distributed particles with the average size of 50 nm. SEIRA enhancement factor is about 68.

Sensitization and Testing of Guinea Pigs with Nickel Sulfate

Dermatology ◽  
1976 ◽  
Vol 152 (6) ◽  
pp. 321-330 ◽  
Author(s):  
Jan E. Wahlberg
Keyword(s):  
Guinea Pigs ◽  
Nickel Sulfate

Pre-Ozonation-Coagulant Interactions in Direct Filtration

2010 ◽  
Vol 45 (3) ◽  
pp. 317-326 ◽  
Author(s):  
Murat Eyvaz ◽  
Hatice Deniz ◽  
Tuğrul S. Aktaş ◽  
Ebubekir Yüksel ◽  
Ahmet M. Saatçi
Keyword(s):  
Ferric Chloride ◽  
Aluminum Sulfate ◽  
Pilot Scale ◽  
The Other ◽  
Design Parameters ◽  
Dimensionless Number ◽  
Raw Water ◽  
Direct Filtration ◽  
Effluent Quality ◽  
Sulfate Application

Abstract Pre-ozonation–coagulant interactions effects in relation to the coagulant type and dosage in direct filtration of surface waters were investigated. The performance of the process was evaluated by monitoring the effluent quality and head loss development through the filter bed. Two identical pilot scale filter columns filtering the same raw water were operated in parallel. The raw water was brought from Ömerli Reservoir in Istanbul. Before filtering, the raw water flow was split into two equal flows. One of the streams was pre-ozonated and the other was aerated using contact chambers with equal volumes equipped with same number and type of diffusers. In coagulation experiments, one of the filters was operated using aluminum sulfate as a coagulant while the other one was run with ferric chloride. For similar filter run times, the effluent quality was always better with pre-ozonation compared to aeration. It was also observed that, aluminum sulfate application gave more favorable results for both particle and turbidity removal compared to ferric chloride. Ives’ filterability index which incorporates the important filtration design parameters such as: effluent quality, the headloss and the velocity of filtration into a dimensionless number was used for the comparison of the experimental results.

Patch testing with a dilution series of nickel sulfate

1992 ◽  
Vol 27 (2) ◽  
pp. 111-112 ◽  
Author(s):  
C. Szliska ◽  
E. Vocks ◽  
J. von Mayenburg ◽  
J. Rakoski
Keyword(s):  
Patch Testing ◽  
Nickel Sulfate ◽  
Dilution Series

scholarly journals Effect of Ammonium Sulfate Application Levels on the Growth and Yield of IR-28 Rice

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Claurence Nkumbe Ndille ◽  
Michael Amos Ballah ◽  
Shafiqullah Safi ◽  
Isaac Mupeta
Keyword(s):  
Ammonium Sulfate ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Tiller Number ◽  
Spikelet Fertility ◽  
Significant Difference ◽  
Spikelets Per Panicle ◽  
Four Levels ◽  
Sulfate Application ◽  
Plant Length

The study was conducted in JICA Tsukuba experimental rice field RE-2 from April 2018 to September 2018, to determine the effect of different levels of nitrogen fertilizer (Ammonium sulfate) application, on the growth and the yield of IR-28 rice. Four levels of nitrogen fertilizer were applied; 0kg.ha-1 (N0), 40kg.ha-1(N40), 60kg.ha-1(N60) and 80kg.ha-1(N80). For each of the four levels, part of the fertilizer was applied as basal dressing prior to transplanting, and the rest was applied as top-dressing at the panicle initiation stage. The experimental design was a Randomized Complete Block Design (RCBD) with four treatments and three replications. The plant length, the tiller number and the leaf colour were measured for growth data. The number of panicles per m2, the number of spikelets per panicle, the spikelet fertility rate, the 1000 grains weight, and the calculated yield were determined for yield components assessment. The plant length and the tiller number were significantly higher in N80 and N60 compared to N40 and N0, and N80 showed the highest values. There was no significant difference among the four nitrogen levels in terms of the number of panicles per m2 and the number of spikelets per panicle. The spikelet fertility rate and the 1000 grains weight were significantly higher in N80, N60 and N40 compared to N0, and no significant difference was observed among the three. Calculated yield values were higher in N80 (5.74 tons.ha-1) and N60 (5.38 tons.ha-1) compared to N40(4.88 tons.ha-1) and N0 (4.36 tons.ha-1), but there were no significant differences among the four treatments (5% Level of HSD). These results suggest that a high yield of rice can be achieved through the application of high amounts of nitrogen fertilizers. N60 nitrogen level can be recommended for optimum yield of IR-28. Although N80 showed higher yield and yield components, N60 is the best and the most economical nitrogen level required for optimum yield of IR-28.

Sign in / Sign up

Export Citation Format

Share Document