scholarly journals METHODOLOGY AND HARDWARE FOR DETERMINING THE FORCE REQUIRED TO MOVE THE PLUNGER ROD OF A DISPOSABLE SYRINGE

Doklady BGUIR ◽  
2020 ◽  
Vol 18 (2) ◽  
pp. 80-88
Author(s):  
M. G. Kiselev ◽  
V. L. Gabets ◽  
S. G. Monich ◽  
V. A. Petrov
Keyword(s):  
Experimental Data ◽  
Measurement Method ◽  
Disposable Syringe ◽  
Two Component ◽  
Single Use ◽  
Force Variation ◽  
Displacement Force ◽  
Comprehensive Studies

The purpose of the article is to describe the methodology and hardware for determining the force required for the movement of the plunger rod of a single-use syringe. The measurement method is used to obtain new experimental data. We first-ever obtained the oscillograms of force variation required to move the plunger rod of test syringes and found that, compared to a two-component, three-component syringe is characterized by significantly smaller values of the effort required for the plunger rod to move. So, when it moves without using water, the F value at the beginning of the suction stage is 1.5 times less than that of a two-component syringe and 2.4 times less at the extrusion stage. The use of water increases the force required to move the rod-piston of the test syringes. Thus, for a two-component syringe the force at the suction stage without using water was 4.5 N and 5.5 N – at the extrusion stage, and with the use of water, the values of these forces, respectively, increased to 6.5 and 6 N. For a three-component syringe without water, the plunger rod displacement force at the suction stage was 2.9 N and at the extrusion stage – 2.3 N, and with water the values of these forces increased to 3.7 and 2.9 N, respectively. The device developed makes it possible to conduct comprehensive studies of the effect of the type of syringe, its capacity, the speed of movement of the plunger rod, the duration of the stop between liquid suction and extrusion stages and other parameters on the amount of forces required to move the plunger rod of the syringe. This will allow you to justify the conditions and the normalized value of the force (or forces) required for the movement of the plunger rod when testing syringes by this indicator.

scholarly journals Description of Isotherms of Two-Component Non-Electrolyte Solution Adsorption onto Solids with Structural Heterogeneity of Adsorbents Taken into Consideration

1988 ◽  
Vol 5 (2) ◽  
pp. 106-115 ◽  
Author(s):  
P. Cysewski ◽  
J.K. Garbacz ◽  
S. Biniak ◽  
A. Swiatkowski ◽  
A. Dabrowski
Keyword(s):  
Experimental Data ◽  
Electrolyte Solution ◽  
Structural Heterogeneity ◽  
Liquid Mixtures ◽  
Two Component ◽  
Solid Adsorbents

The concepts of Stoeckli as well as those of Wojsz and Rozwadowski have been adopted for describing adsorption from two-component non-electrolyte liquid mixtures at solid adsorbents taking into account structural heterogeneity of the adsorbent. Some new global adsorption equations have been obtained and verified on the basis of experimental data.

Transfer Functions for Helical Springs

1969 ◽  
Vol 91 (4) ◽  
pp. 1011-1016 ◽  
Author(s):  
B. L. Johnson ◽  
E. E. Stewart
Keyword(s):  
Experimental Data ◽  
Experimental Investigation ◽  
Steady State ◽  
Transfer Functions ◽  
Helical Springs ◽  
Response Characteristics ◽  
Transmitted Force ◽  
Vibratory Motion ◽  
Frequency Response Characteristics ◽  
Displacement Force

This study reports the results of an analytical and experimental investigation of helical springs subjected to vibratory motion. Transfer functions are presented for both displacement and transmitted force as outputs with force as the input. Steady-state sinusoidal Magnitude Ratio (displacement—force) and Transmittance Ratio (force—force) are plotted along with substantiating experimental data. It is shown that an actual spring displays frequency response characteristics over most of the frequency spectrum that would render its function useless in many cases.

Analysis of the Pitch Diameter Measurement Based on Three-Pin/T-Shaped Probe and Thread Scanner

2014 ◽  
Vol 644-650 ◽  
pp. 1307-1312
Author(s):  
Yu Zhang ◽  
Yue Wang ◽  
Xing Yu Yao
Keyword(s):  
Experimental Data ◽  
Measurement Uncertainty ◽  
Measurement Method ◽  
Measurement Methods ◽  
Data Consistency ◽  
Maximum Difference ◽  
Diameter Measurement ◽  
Application Program ◽  
Actual Size ◽  
Methods Of Measurement

To study the data consistency of Three-pin/T-shaped probe and thread scanning measurement. Through the analysis and summary of the measurement methods and experimental data obtained in two methods of measurement uncertainty can meet the thread gauge diameter measurement requirements. Experiment to obtain the maximum difference of the actual size of the corresponding point of 1.1μm, verify the correctness of the two thread measurement method and propose the appropriate application program.

On the Characteristics of the Pseudogapped Metallic State of High-Tc Superconductors

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3052-3056 ◽  
Author(s):  
Liyuan Zhang ◽  
Xiaoqiang Yang ◽  
Changfeng Chen
Keyword(s):  
Experimental Data ◽  
State Physics ◽  
Solid State ◽  
Theoretical Calculations ◽  
Model Description ◽  
Metallic State ◽  
High Tc Superconductors ◽  
Solid State Physics ◽  
High Tc ◽  
Two Component

The pseudogapped metallic state (PS) in high-T c superconductors (HTS) has distinctive characteristics in comparison with the metallic state in tranditional solid state physics. Through careful analyses of experimental data and theoretical calculations, we have correlated the pseudogap in the density of states with the two-component characteristics in the HTS. We propose seven points as a model description for PS.

The Transition Between Mild and Severe Wear for Boundary-Lubricated Steels

1991 ◽  
Vol 113 (1) ◽  
pp. 65-72 ◽  
Author(s):  
B. Samuels ◽  
M. N. Richards
Keyword(s):  
Experimental Data ◽  
Boundary Lubrication ◽  
Applied Load ◽  
Plastic Collapse ◽  
Wear Model ◽  
Aisi 4340 Steel ◽  
Severe Wear ◽  
Surface Plasticity ◽  
Two Component ◽  
Good Agreement

The wear of AISI-4340 steel under boundary lubrication has been measured in reciprocating sliding. As the hardness of martensitic specimens is reduced from 700 Hv to 250 Hv the wear passes through a transition from “mild” to “severe” wear. A two-component wear model, associating the wear mechanisms with sub-surface and surface plasticity controlled modes of asperity deformation, has been quantitatively fitted to the experimental data. Good agreement is found between the values of constants in the model obtained in this way, and other theoretical and experimental data in the literature. The model can also account for the results of increasing the applied load, by allowing for the effects of increased friction and plastic collapse and removal of the most severely deformed asperities.

EFFECT OF INHIBITORS ON ROW-INTERCROPPING SYSTEM

1996 ◽  
Vol 04 (01) ◽  
pp. 31-38
Author(s):  
J. CHATTOPADHYAY ◽  
P.K. TAPASWI ◽  
P. BANIK ◽  
D.K. BAGCHI
Keyword(s):  
Experimental Data ◽  
Dynamical Behaviour ◽  
Competition Model ◽  
Species Competition ◽  
Two Component ◽  
Effect Of Inhibitors

In this paper we have studied the effect of inhibitors on row-intercropping system by considering a two component species competition model proposed by Lotka (1920). We have verified our results by our experimental data. It has been observed that the inhibitors play an important role to shape the dynamical behaviour of the system.

Computer Simulation of Sputtering from Two Component Liquid Metal Targets

1985 ◽  
Vol 63 ◽  
Author(s):  
M. H. Shapiro ◽  
D. Y. Lo ◽  
T. A. Tombrello
Keyword(s):  
Experimental Data ◽  
Angular Distributions ◽  
Good Qualitative Agreement ◽  
Energy Distributions ◽  
Pure Indium ◽  
Two Component ◽  
Similar Information ◽  
Indium Target ◽  
Multiple Interaction ◽  
Detailed Nature

ABSTRACTThe sputtering of In and Ga atoms from a “liquid” target composedof gallium coveredby a surface monolayer of indium by incident 5 keV Ar+ ions was simulated using the multiple interaction molecular dynamics technique. Yields, energy distributions, and angular distributions of sputtered atoms were obtained at a temperature above the melting point for the eutectic alloy. Similar information was obtained for a pure gallium and a pure indium target. Our results for layer yield ratios and angular distributions are in good qualitative agreement with Dumke's experimental data for the Ar+, In-Ga system. Absolute yields, however, were found to be sensitive to the detailed nature of the two-body potentials used to describe the atom-atom interactions.

Real-Time Shape Measurement by Unwrapping Method Using Aliasing

2006 ◽  
Vol 326-328 ◽  
pp. 31-34 ◽  
Author(s):  
Motoharu Fujigaki ◽  
Toshio Toyotake ◽  
Toru Matui ◽  
Yoshiharu Morimoto
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Measurement Method ◽  
Fourier Spectrum ◽  
Phase Unwrapping ◽  
Phase Shifting ◽  
Cycle Phase ◽  
Shape Measurement ◽  
Time Shape ◽  
Two Component

We previously proposed a real-time shape measurement method using two-component synthesis grating projection. In the method, phase unwrapping of the projected grating is performed by using aliasing of the Fourier spectrum of the grating images. It requires only 5 images obtained for one-cycle phase-shifting. Each phase in the two-component can be extracted from only 5 phase-shifted grating images. In this paper, we propose a real-time shape measurement system. The theory, the algorithm for the analysis and the experimental results are shown.

Dielectric Properties of Nanocomposites of Silver in a Glass-ceramic Containing the Lithium Niobate Phase

2000 ◽  
Vol 15 (6) ◽  
pp. 1324-1330 ◽  
Author(s):  
A. Dan ◽  
D. Chakravorty
Keyword(s):  
Experimental Data ◽  
Dielectric Constant ◽  
Glass Ceramics ◽  
Metal Particles ◽  
Present Specimen ◽  
Charge Model ◽  
Two Component ◽  
Polarization Mechanism ◽  
Space Charge Model ◽  
Silver Metal

Glass-ceramics containing the LiNbO3 phase were used to grow nanometer-sized silver metal particles with median diameters in the range 10.5–17.3 nm. These nanocomposites showed large values of dielectric constant of the order of 103–104. Bergman's space charge model of a two-component composite gave results that differed from the experimental data. The polarization mechanism was concluded to be electronic in origin. An interrupted metallic strand model developed earlier by Rice and Bernasconi was used to explain the results obtained in the present specimen system.

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