DEPENDENCE OF THE BIOLOGICAL ACTIVITY OF FUNGICID FOR SEED TREATMENT ON PARTICLE SIZE

2020 ◽  
pp. 220-221
Author(s):  
L. Elinevskaya ◽  
V. Pavlov ◽  
K. Kienskaya ◽  
A. Kuskov
Keyword(s):  
Particle Size ◽  
Biological Activity ◽  
Antifungal Activity ◽  
Quantitative Determination ◽  
Seed Treatment ◽  
Particle Sizes ◽  
Wet Milling ◽  
Milling Method ◽  
Wheat Seeds

Wheat seeds were treated with suspensions of tebuconazole with different particle sizes which were obtained by wet-milling method. Mycological studies and quantitative determination of mycotoxin by HPLC were carried out. The dependence of antifungal activity on the particle size in the preparation is shown.

scholarly journals Effects of Milling Methods and Cultivars on Physicochemical Properties of Whole-Wheat Flour

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Min Jeong Kang ◽  
Mi Jeong Kim ◽  
Han Sub Kwak ◽  
Sang Sook Kim
Keyword(s):  
Particle Size ◽  
Wheat Flour ◽  
Water Solubility ◽  
Principal Component ◽  
Hammer Mill ◽  
Particle Sizes ◽  
Whole Wheat Flour ◽  
Whole Wheat ◽  
Milling Method ◽  
Dough Extensibility

The aim of the present study was to investigate the influence of milling methods (jet mill (JM) and hammer mill (HM)) and wheat cultivars (Keumkang (K), Jokyung (J), and Anzunbaengi (A)) on physicochemical and dough properties of whole-wheat flour (WWF). The color, particle size, starch damage (SD), falling number (FN), water absorption index (WAI), water solubility index (WSI), pasting and Mixolab® properties, and dough extensibility of WWF were measured. Significant differences were observed in proximate compositions as well as in color, particle size, FN, and WAI between the distinct milling methods and cultivars (p<0.001). The particle sizes of each cultivar milled with a HM (K: 188.5 µm; J: 115.7 µm; A: 40.34 µm) were larger than those milled with a JM (K: 41.8 µm; J: 50.7 µm; A: 20.8 µm). The final viscosity of WWF milled with a HM (K: 1304 cP; J: 1249 cP; A: 1548 cP) was higher than that of cultivars milled with a JM (K: 1092 cP; J: 1062 cP; A: 994 cP). Dough extensibility and resistance to extension also differed among the cultivars, and the C2 Mixolab® parameter (an indicator of protein weakening) was influenced by the milling method. Overall, results from principal component analysis showed that, among the three cultivars, Keumkang WWF was the most affected by the milling method.

Effects of Particle Size and Method of Milling on Determination of Morphine in Papaver somniferum L. Straw

1982 ◽  
Vol 65 (3) ◽  
pp. 651-654
Author(s):  
Beatriz Ferreira Engelke ◽  
Phillip G Vincent
Keyword(s):  
Particle Size ◽  
High Pressure ◽  
Liquid Chromatography ◽  
High Pressure Liquid Chromatography ◽  
Reproducibility Of Results ◽  
Ball Mill ◽  
Papaver Somniferum ◽  
Particle Sizes ◽  
Morphine Content

Abstract Different particle sizes of blade- and ball-milled poppy straw were separated and analyzed for morphine by high pressure liquid chromatography. Morphine content varied up to 70% among the different size particles. This may account for discrepancies observed in percentages of morphine found among random aliquots. Homogenizing a carefully quartered sample of blade-milled straw by further pulverization in a percussion ball mill 2 min and taking a quartered aliquot for morphine analysis improved the reproducibility of results.

Influence of Powder Particle Size of Slurries on Mechanical Properties of Porous Hydroxyapatite Ceramics

2005 ◽  
Vol 284-286 ◽  
pp. 365-368 ◽  
Author(s):  
Yin Zhang ◽  
Yoshiyuki Yokogawa ◽  
Tetsuya Kameyama
Keyword(s):  
Particle Size ◽  
Flexural Strength ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Particle Sizes ◽  
Wet Milling ◽  
Median Particle Size ◽  
Powder Characteristics ◽  
Median Particle

The effect of different particle sizes on the flexural strength and microstructure of three different types of hydroxyapatite (HAp) powders was studied. The powder characteristics of laboratory synthesized HAp powder (Lab1 and Lab2) were obtained through a wet milling method, and the median particle size and the specific surface area of powders are different with the dryness period. The median particle sizes of Lab1 and Lab2 are 0.34 µm and 0.74 µm, and the specific surface areas of Lab1 and Lab2 are 38.01 m2/g and 19.77 m2/g. The commercial HAp had median particle size of 1.13 µm and specific surface area of 11.62m2/g. The different powder characteristics affected the slip characteristics, and the flexural strength and microstructure of the sintered porous HAp bodies are also different. The optimum value for the minimum viscosity in these present HAp slip with respect to its solid loading and the optimum amount of the deflocculant were investigated. The flexural strengths of the porous HAp ceramics prepared by heating at 1200°C for 3 hrs in air were 17.59 MPa for Lab1 with a porosity of 60.48％, 10.51 MPa for Lab2 with a porosity of 57.75％, and 3.92 MPa for commercial HAp with a porosity of 79.37％.

Particle Size Study of Smectite Clays from the City of Pedra Lavrada-PB

2014 ◽  
Vol 775-776 ◽  
pp. 377-382
Author(s):  
Mirtys Allamana Ferreira Cardoso ◽  
Alexsandra Cristina Chaves ◽  
M.M. Dantas ◽  
Isabelle Albuquerque da Silva ◽  
I.D.S. Pereira ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Drilling Fluids ◽  
Particle Sizes ◽  
Smectite Clays ◽  
Significant Difference ◽  
Water Based ◽  
The City

The state of Paraíba disposes of one of the largest deposits of smectites in the country. However, these smectites present in their composition elevated contents of accessory minerals, especially quartz. For these clays to become viable to determine technological use it is necessary the elimination of part of these minerals. The particle size analysis of a soil consists in the determination of the size of the particles that constitute it and their distribution in certain intervals. This work aims to study smectite clays from the city of Pedra Lavrada-PB, through the particle size analyses, for the use in water based drilling fluids. The determination of particle size was made by sieving and laser granulometer. Apparent and plastic viscosities were measured from the samples. The clays were left at rest before the test for periods of 7 and 28 days, with and without deflocculant. It was verified that there was no significant difference in the particle sizes in relation to the resting time of the samples.

Validation of HPTLC and HPLC Methods for the Quantitative Determination of Allyl Disulfide in Some Polyherbal Oils

2012 ◽  
Vol 95 (6) ◽  
pp. 1574-1578
Author(s):  
Nitin Dubey ◽  
Nidhi Dubey ◽  
Rajendra Mehta
Keyword(s):  
Particle Size ◽  
Quantitative Determination ◽  
Silica Gel ◽  
Vegetable Oil ◽  
Flow Rate ◽  
Mobile Phase ◽  
Allium Sativum ◽  
Hplc Separation ◽  
Reliable Marker

Abstract Allium sativum L (garlic) is an essential component of many polyherbal oils used in traditional systems of medicine. Allyl disulfide has been a major component found in vegetable oil macerate of garlic, and can be used as reliable marker for determination of garlic in oil macerates of garlic. The HPLC separation of allyl disulfide was achieved on a Phenomenex Luna C18 (25 cm × 4.6 mm id × 5 μm particle size) column using acetonitrile–water–tetrahydrofuran (70 + 27 + 3, v/v/v) mobile phase at a flow rate of 1.0 mL/min. Quantitation was achieved with UV detection at 298 nm over the concentration range 8–48 μg/mL. HPTLC separation of allyl disulfide was achieved on an aluminum-backed layer of silica gel 60 F254 using n-hexane mobile phase. Quantitation was achieved by densitometric analysis at 298 nm over the 200–1200 ng/band concentration range. The methods were validated according to International Conference on Harmonization guidelines.

Determination of Particle-Size Distribution in GR-S Latexes

1954 ◽  
Vol 27 (4) ◽  
pp. 1051-1060 ◽  
Author(s):  
Alfred Nisonoff ◽  
W. E. Messer ◽  
L. H. Howland
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Light And Electron Microscopy ◽  
Wide Distribution ◽  
Plant Production ◽  
Particle Sizes ◽  
Laboratory Centrifuge ◽  
Made In

Abstract A method based on Stokes' law, involving the use of an ordinary laboratory centrifuge, is described for the determination of particle size distribution in GR-S latexes. It is shown to be valid by tests for reproducibility and by comparison with the results of light and electron microscopy. In applying the method, several unusually fluid high-solids latexes made in the pilot plant were found to be characterized by a wide distribution of particle sizes. Data on various latexes in plant production are reported.

scholarly journals Pengaruh waktu milling terhadap Sifat mikro struktur dan magnet dari NdFeB dengan proses Wet dan Dry milling

2021 ◽  
Vol 9 (1) ◽  
pp. 9-16
Author(s):  
Wahyu Solafide Sipahutar ◽  
◽  
William William ◽  
Muljadi Muljadi ◽  
◽  
...  
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Magnetic Flux ◽  
Time Variation ◽  
Annealing Temperature ◽  
Milling Time ◽  
Dry Milling ◽  
Wet Milling ◽  
Milling Method

Making of magnets from NdFeB flakes by Wet and dry milling to determine the microstructure, physical and magnetic properties of the milling time variation is 16, 24, and 48 hours. The milling powder is then analysed to determine the particle size with PSA and XRD to determine the phase formed. Then the compacting process with isotropy printing for making pellet test samples with a pressure of 7 tons for 2 minutes. Then the pellet sample, given annealing temperature with a variation of 150 and 170 ̊C, then a measurement of magnetic properties with a Gauss Meter. The results obtained by the smallest optimum particle size with 48 hours of milling time at a diameter of 90% 4.7 μm, while the results of dry milling at a diameter of 90% amounted to 60.85 μm. The best method to get the smallest particle size is the Wet milling method. XRD results with Wet and Dry milling phases that appear only Nd2Fe14B phase. As milling time increases, the resulting density increases. The largest magnetic flux testing with dry milling method with 48 hours of milling time for temperatures 170 ̊C temperature obtained 468.5 Gauss and the addition of annealing temperature the magnetic properties of the material is getting better.

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