scholarly journals Determination of linear dimensions and square surfaces areas of morphological objects on micrographs using ImageJ software.

Morphologia ◽  
2016 ◽  
Vol 10 (3) ◽  
pp. 377-381 ◽  
Author(s):  
O. V. Poslavskaya
Keyword(s):  
Linear Dimensions ◽  
Imagej Software

scholarly journals Determination of the minimum drop height of the spherical grains in the solution of the treater

2020 ◽  
Vol 175 ◽  
pp. 01019
Author(s):  
Viktor Saitov ◽  
Vyacheslav Farafonov ◽  
Aleksey Saitov ◽  
Tatyana Malykh
Keyword(s):  
Surface Tension ◽  
Hydrodynamic Drag ◽  
Drop Height ◽  
Grain Production ◽  
Linear Dimensions ◽  
Minimum Height ◽  
Pea Seeds ◽  
Spherical Grains ◽  
Pea Seed

One of the main reserves for increasing grain production is the use for sowing high-quality seeds, purified from impurities and pathogens. One of the main ways to protect the seed from various diseases is dressing. The most effective way to protect seeds from disease is wet dressing with the simultaneous release of grain impurities. To develop a device for cleaning and dressing seeds by density using a wet method, an estimate was made of the minimum height of the fall of the grain needed to overcome the surface tension of the liquid. As objects of research, pea seeds were used, having a shape close to a spherical. Therefore, a spherical grains with a density ρz = (1.15-1.45)·103 kg/m3 and a diameter of 2rz = (3.5-10.9)·10-3 m was taken as a model of pea seed. We study the fall of individual spherical grains with minimal (2rzmin = 3.5·10-3 m) and maximum (2rzmax. = 10.9·10-3 m)) linear dimensions that have a density ρz = 1.15; 1.25; 1.35 and 1.45·103 kg/m3. Drop occurs on the surface of the water (ρzh = 1.0·103 kg/m3) and the aqueous solution of the etchant (ρzh = 1.03; 1.06; 1.09; 1.12 and 1.15·103 kg/m3), with Corresponding coefficients σ of surface tension (0.0727; 0.0755; 0.0771; 0.0786; 0.0801, 0.0816 N/m) and hydrodynamic drag coefficients c = 0.4 (0.5 for ρzh = 1.12·103 and 1.15·103 kg/m3). The process of dressing grain is considered at a temperature of 20 °C. It was established that the minimum drop height h to overcome the surface tension of the dressing solution with all spherical grains should be 15.5·10-3 m.

THE EQUATION OF MOTION OF A GEOPHONE ON THE SURFACE OF AN ELASTIC EARTH

Geophysics ◽  
1944 ◽  
Vol 9 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Alfred Wolf
Keyword(s):  
Wave Length ◽  
Elastic Solid ◽  
Damping Force ◽  
High Frequencies ◽  
Elastic Earth ◽  
Linear Dimensions ◽  
The Earth ◽  
Restoring Forces ◽  
System Equations

The motion of a geophone case placed on the surface of an elastic earth does not follow faithfully the motion of the earth at high frequencies. In effect, a weight placed on the surface of an elastic solid constitutes a damped oscillating system. The elastic restoring forces are determined by the area of contact between the weight and the surface of the solid and by the elastic moduli of the solid. The damping force is due to emission of elastic waves by the oscillating weight. The motion of the solid also contributes to the inertia of the system. Equations are developed for these forces on the assumption that the wave length is long compared to the linear dimensions of the area of contact between the weight and the elastic solid. This leads to a determination of the frequency of oscillation and of the decrement of such a system.

XIII. Experiments to determine the value of the British association unit of resistance in absolute measure

1882 ◽  
Vol 173 ◽  
pp. 661-697 ◽  
Keyword(s):  
Relative Velocity ◽  
British Association ◽  
Great Weight ◽  
Electric Currents ◽  
Sliding Surfaces ◽  
General Plan ◽  
Linear Dimensions ◽  
Absolute Measure ◽  
New Apparatus

The present paper relates to the same subject as that entitled “On the Determination of the Ohm in Absolute Measure," communicated to the Society by Dr. Schuster and myself, and published in the Proceedings for April 12, 1881 —referred to in the sequel as the former paper. The title has been altered to bring it into agreement with the resolutions of the Paris Electrical Congress, who decided that the ohm was to mean in future the absolute unit (10 9 C. G. S.), and not, as has usually been the intention, the unit issued by the Committee of the British Association, called for brevity the B.A. unit. Much that was said in the former paper applies equally to the present experiments, and will not in general be repeated, except for correction or additional emphasis. The new apparatus (Plate 48) was constructed by Messrs. Elliott on the same general plan as that employed by the original Committee, the principal difference being an enlargement of the linear dimensions in the ratio of about 3 : 2. The frame by which the revolving parts are supported is provided with insulating pieces to prevent the formation of induced electric currents, and more space is allowed than before between the frame and those parts of the ring which most nearly approach it during the revolution. It is supported on three levelling screws, and is clamped by bolts and nuts to the stone table upon which it stands. The ring is firmly fastened by nuts to two gun-metal pieces which penetrate it at the ends of the vertical diameter, and which form the shaft on which it rotates. The lower end of the bottom piece is rounded, and bears upon a plate of agate, on which the weight of the revolving parts is taken. A little above this comes the driving pulley (9 inches in diameter), and above this again the screw and nut by which the divided card is held. The top piece is hollow, forming a tube with an aperture of 1¼ inches, and is held by a well-fitting brass collar attached to the upper part of the frame. On this bearing the force is very small, so that the considerable relative velocity of the sliding surfaces has no ill effect. Notwithstanding its great weight, the ring ran very lightly, and the principal resistance to be overcome was that due to setting air in motion.

scholarly journals Determining Image Opacity in Broiler Respiratory Radiographic Using ImageJ and Ansel Adam’s Zone System

2020 ◽  
Author(s):  
Ikhwan Wirahadikesuma ◽  
Koekoeh Santoso ◽  
Hera Maheshwari ◽  
Akhiruddin Maddu
Keyword(s):  
Broiler Chickens ◽  
Medical Personnel ◽  
Radiographic Image ◽  
Radiographic Images ◽  
Density Measurements ◽  
Average Value ◽  
Chitosan Nanoparticle ◽  
Value Range ◽  
Imagej Software

The diagnosis of diseases of the respiratory, lung, and air sacs generally uses radiographic images by radiologists. Therefore, the results are very subjective, causing differences in the interpretation and diagnosis among different radiologists. A radiographic image reading needs to be made in the form of a simple, fast, and accurate algorithm. The study aimed to reduce subjectivity and be easily carried out by radiology medical personnel, especially veterinarians. This study carried out density measurements by image processing using ImageJ software on 14 radiographic images of broiler chickens. Furthermore, the density value is associated with the Ansel Adam's - grayscale system to determine the opacity of respiratory tract tissues/organs, which were previously inhaled by one of them with chitosan-iopamidol nanoparticles using a nebulizer. The results of density measurements for the category of opacity in radiographic images are that seven spot areas lead brighter (radiopaque) only in chickens that are inhaled mist maker of chitosan-iopamidol nanoparticles. Then the determination of the value range is obtained average value on two ventrodorsal radiographic images, which are inhaled by mist maker of chitosan-iopamidol nanoparticles and chitosan nanoparticle compressor. The conclusion of this study was only in chickens that were infested with mist maker chitosan-iopamidol, whose radiographic image had a radiopaque spot and middle-value area. 

Rapid determination of histamine in fish by thin-layer chromatography-image analysis method using diazotized visualization reagent prepared withp-nitroaniline

2018 ◽  
Vol 10 (27) ◽  
pp. 3386-3392 ◽  
Author(s):  
Hui Yu ◽  
Daina Zhuang ◽  
Xingjuan Hu ◽  
Shuang Zhang ◽  
Zhiyong He ◽  
...  
Keyword(s):  
Image Analysis ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Analytical Method ◽  
Rapid Determination ◽  
Analysis Method ◽  
Image Analysis Method ◽  
Imagej Software ◽  
Layer Chromatography

A novel analytical method for rapid determination of histamine in fish involves methanol extraction, manual spotting, thin-layer chromatography (TLC) for less than 15 min, visualization by diazotizedp-nitroaniline reagent, and quantitation by image analysis using the ImageJ software.

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