scholarly journals Loading Mg2+ into Erythrocytes with a Proposed Single Syringe Sterile Loading Process

2020 ◽  
Vol 10 (1) ◽  
pp. 85
Author(s):  
K. D. E. P. Ranasinghe ◽  
D. Thambavita ◽  
W. Pathirana
Keyword(s):  
Loading Process

Effect of log loading on the performance of wood room

2014 ◽  
Vol 29 (2) ◽  
pp. 201-210
Author(s):  
Ari Isokangas ◽  
Kari Ala-Kaila ◽  
Markku Ohenoja ◽  
Aki Sorsa ◽  
Kauko Leiviskä
Keyword(s):  
Product Quality ◽  
Material Properties ◽  
Raw Material ◽  
Performance Criteria ◽  
Processing Unit ◽  
Level Control ◽  
Paper Mills ◽  
Remarkable Effect ◽  
Loading Process ◽  
Small Wood

Abstract The purpose of this paper is to analyse the log loading process of wood room, which is typically the first processing unit in pulp and paper mills. The aim is to improve the log loading process to obtain production with a constant log flow of well de-iced logs to the debarking drum. This way it is possible to reduce costs and enhance product quality. The research was carried out utilising a log loading simulator. The parameters of the simulation model were selected on the basis of process observations on a mill. The results indicate that it is essential to adjust the process and equipment parameters, raw material properties and truck loader operation together in order to reach the target capacity with minimum costs. Especially the speed of the infeed conveyor affects all performance criteria and should be selected carefully. In addition, wood yard logistics and raw material properties have a remarkable effect on the wood room performance. The results can be utilised in mills to allow the upper level control perform in a planned way so that small wood loss and good product quality can be obtained.

scholarly journals Numerical simulation on coal loading process of shearer drum based on discrete element method

2021 ◽  
pp. 014459872110135
Author(s):  
Zhen Tian ◽  
Shuangxi Jing ◽  
Lijuan Zhao ◽  
Wei Liu ◽  
Shan Gao
Keyword(s):  
Numerical Simulation ◽  
Discrete Element Method ◽  
Loading Rate ◽  
Low Cost ◽  
Element Model ◽  
Discrete Element ◽  
Helix Angle ◽  
Loading Process ◽  
Coal Particles ◽  
Element Method

The drum is the working mechanism of the coal shearer, and the coal loading performance of the drum is very important for the efficient and safe production of coal mine. In order to study the coal loading performance of the shearer drum, a discrete element model of coupling the drum and coal wall was established by combining the results of the coal property determination and the discrete element method. The movement of coal particles and the mass distribution in different areas were obtained, and the coal particle velocity and coal loading rate were analyzed under the conditions of different helix angles, rotation speeds, traction speeds and cutting depths. The results show that with the increase of helix angle, the coal loading first increases and then decreases; with the increase of cutting depth and traction speed, the coal loading rate decreases; the increase of rotation speed can improve the coal loading performance of drum to a certain extent. The research results show that the discrete element numerical simulation can accurately reflect the coal loading process of the shearer drum, which provides a more convenient, fast and low-cost method for the structural design of shearer drum and the improvement of coal loading performance.

Advanced Technique for In Situ Raman Spectroscopy Monitoring of the Freezing-Induced Loading Process

Langmuir ◽  
2021 ◽  
Vol 37 (4) ◽  
pp. 1365-1371
Author(s):  
Sergei V. German ◽  
Gleb S. Budylin ◽  
Evgeny A. Shirshin ◽  
Dmitry A. Gorin
Keyword(s):  
Raman Spectroscopy ◽  
In Situ Raman Spectroscopy ◽  
Advanced Technique ◽  
Loading Process ◽  
In Situ Raman

scholarly journals Optimisation Method for Determination of Crack Tip Position Based on Gauss-Newton Iterative Technique

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Bing Yang ◽  
Zhanjiang Wei ◽  
Zhen Liao ◽  
Shuwei Zhou ◽  
Shoune Xiao ◽  
...  
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Plastic Zone ◽  
Relative Error ◽  
Crack Tip ◽  
Image Correlation ◽  
Preconditioned Conjugate Gradient ◽  
Loading Process ◽  
Tip Position

AbstractIn the digital image correlation research of fatigue crack growth rate, the accuracy of the crack tip position determines the accuracy of the calculation of the stress intensity factor, thereby affecting the life prediction. This paper proposes a Gauss-Newton iteration method for solving the crack tip position. The conventional linear fitting method provides an iterative initial solution for this method, and the preconditioned conjugate gradient method is used to solve the ill-conditioned matrix. A noise-added artificial displacement field is used to verify the feasibility of the method, which shows that all parameters can be solved with satisfactory results. The actual stress intensity factor solution case shows that the stress intensity factor value obtained by the method in this paper is very close to the finite element result, and the relative error between the two is only − 0.621%; The Williams coefficient obtained by this method can also better define the contour of the plastic zone at the crack tip, and the maximum relative error with the test plastic zone area is − 11.29%. The relative error between the contour of the plastic zone defined by the conventional method and the area of the experimental plastic zone reached a maximum of 26.05%. The crack tip coordinates, stress intensity factors, and plastic zone contour changes in the loading and unloading phases are explored. The results show that the crack tip change during the loading process is faster than the change during the unloading process; the stress intensity factor during the unloading process under the same load condition is larger than that during the loading process; under the same load, the theoretical plastic zone during the unloading process is higher than that during the loading process.

New Graft Dispenser to Simplify Hair Transplantation

1997 ◽  
Vol 14 (2) ◽  
pp. 201-202
Author(s):  
Isabel M. Banuchi
Keyword(s):  
Stainless Steel ◽  
Counting Process ◽  
Open Channel ◽  
Saline Solution ◽  
Hair Transplantation ◽  
Multiple Channel ◽  
Loading Process ◽  
New Instrument ◽  
Disposable Plastic

The Banuchi graft dispenser is an instrument for transplanting a plurality of hair grafts into preformed holes that facilitates and reduces the time of the implant procedure. The graft dispenser is an elongated hollow tube having both proximal and distal ends open to facilitate the hair graft loading process. It has an open channel extending along the length of the tube that holds the grafts, simplifying the counting process during the procedure. This instrument offers many advantages. The most attractive advantage for both patients and surgeons is that it reduces the time of implantation significantly. This reduction in time is due to the fact that with the graft dispenser, the surgeon can use the instrument not only to hold the grafts, but to dilate the preformed incisions and make the insertion more accurately and quickly. The new instrument has been designed in stainless steel and soon will be available in disposable plastic for further convenience. A multiple-channel instrument with a common funnel has been tested and proven to be very useful. A special tray to keep the loaded grafts in saline solution has also been designed.

Debonding Behaviors of CFRP Strengthened RC Beams with Weak Interfaces

2013 ◽  
Vol 351-352 ◽  
pp. 587-591
Author(s):  
Sen Li ◽  
Xiao Gang Wang ◽  
Xin Gang Zhou
Keyword(s):  
Tensile Strain ◽  
Structural Integrity ◽  
Structural Performance ◽  
Rc Beams ◽  
Test Results ◽  
Weak Interface ◽  
Premature Rupture ◽  
Loading Process ◽  
Interface Effects

Debonding behaviors of CFRP strengthened RC beams were experimentally investigated under the influence of weak interfaces, which are induced either by defective bonding of replaced cover or expansive cracks. Shown by test results, weak interfaces impaired considerably the structural integrity of strengthening systems during loading, and easily led to CFRP debonding failure. U-strips worked effectively in preventing the integral debonding and guarantee the structural performance of flexural sheets. However, local cover delamination in the loading process and premature rupture of flexural CFRP could still take place due to the weak interface effects. Therefore, allowable tensile strain of flexural CFRP should be reduced, and more strict confinement and anchorage measures should be taken in this case.

MICRO-SLIP INDUCED DAMPING IN PLANAR CONTACT UNDER CONSTANT AND UNIFORM NORMAL STRESS

2010 ◽  
Vol 02 (02) ◽  
pp. 281-304 ◽  
Author(s):  
N. PEYRET ◽  
J.-L. DION ◽  
G. CHEVALLIER ◽  
P. ARGOUL
Keyword(s):  
Normal Stress ◽  
Loss Factor ◽  
Flexural Vibration ◽  
Bolted Joints ◽  
Stress Fields ◽  
Dissipated Energy ◽  
Stress And Strain ◽  
Loading Process ◽  
Nonlinear Loss ◽  
Planar Contact

The friction between interfaces at bolted joints plays a major role in the damping of structures. This paper deals with the energy losses caused by micro-slips in the joints. The aim of this study is to define in an analytical way these energy dissipation mechanisms which we examine through the analysis of a new benchmark: the flexural vibration of a clamped-clamped beam with original positioning of the interfaces. The joints exhibit the behavior of an interface under constant and uniform normal stress. The stress and strain values are computed at the joints under the assumption of quasi-static motion. This model allows us to understand the evolution of the slip and stick regions along the joint interfaces during the loading process. The expressions of the strain and stress fields during each phase of the loading process are derived. These lead to the quantification of the dissipated energy within the interface. Using this formula, a nonlinear loss factor can then be computed. In the final part of the paper, the dynamic response of the beam is calculated using this nonlinear loss factor.

Modelling the gas well liquid loading process

2005 ◽  
Author(s):  
Niek Dousi ◽  
Cornelis A.M. Veeken ◽  
Peter K. Currie
Keyword(s):  
Liquid Loading ◽  
Gas Well ◽  
Loading Process

The Analysis of Energy Characteristics of Infrasonic Signal in Coal Sample with Different Strength under Loading Process

2017 ◽  
Vol 103 (5) ◽  
pp. 795-802
Author(s):  
Bing Jia ◽  
Jian-Ping Wei ◽  
Zhi-Hui Wen ◽  
Yun-Gang Wang ◽  
Lin-Xing Jia
Keyword(s):  
Coal Sample ◽  
Energy Characteristics ◽  
Loading Process ◽  
Infrasonic Signal
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