Analysis of smooth transition section in microwave regeneration system of diesel filter

2002 ◽  
Author(s):  
Chen Li ◽  
Cheng Bin Li ◽  
Guo Yuan Zhang
Keyword(s):  
Smooth Transition ◽  
Regeneration System ◽  
Transition Section ◽  
Microwave Regeneration ◽  
Diesel Filter

Analysis of Piecewise Uniform Oval Rings with Transition Sections

1970 ◽  
Vol 14 (02) ◽  
pp. 112-120
Author(s):  
W. L. Brodsky ◽  
W. P. Vafakos
Keyword(s):  
Stress Distribution ◽  
Reference Line ◽  
Smooth Transition ◽  
Radial Load ◽  
Optimum Length ◽  
Transition Section

An analysis of a doubly symmetric oval ring fabricated from uniform, dissimilar, circular segments connected by a smooth transition section is presented. The ring is subject to a uniform radial load applied on an oval reference line. For several ovals the stress distribution is determined for various lengths of transition section. For each oval there is found an optimum length of transition section as well as a length for which the stress at the foot of the transition section vanishes.

scholarly journals Parameters Substantiation of Guide Surface of Flat Material into the Processing Area

2020 ◽  
Vol 9 (4) ◽  
pp. 962-966
Keyword(s):  
Differential Equations ◽  
Numerical Method ◽  
Contact Area ◽  
Sheet Material ◽  
Work Roll ◽  
Smooth Transition ◽  
Transition Section ◽  
Processing Zone

The transporting and feeding devices of technological machines have to ensure the transportation and supply of any sheet material, including leather semi-finished product without folds, into the working area of the rolling pair. In the transition section between the feed conveyor and the roll pair, when there is an insufficient friction between the sheet material and the surface of the lower work roll, problems may arise, i.e. accumulation, twisting or retention of sheet material will occur. To prevent such cases, it is recommended to use the guide surface of the processed leather semi-finished product in the processing zone, which provides a smooth transition of the leather semi-finished product to the contact area of the roll pair. The paper presents theoretical preconditions for determining the type (shape) of the guide surface of a flat material into the processing zone. The problem of smooth supply of flat material to the processing zone of the roll pair has been solved. To solve the problem of smooth feeding of the flat material into the processing zone of the roll pair, by selecting the curve of the guide surface, differential equations of material motion are finalised. By the numerical method Graphic dependences is derived that allow depending on the initial parameters of the machine and the leather semi-finished product determining the required parameters of the guide surface of conveying device, providing a smooth supply of flat material into the processing zone of the working roll pair.

Design and Testing of an Experimental IPv4-to-IPv6 Transition Network

2006 ◽  
Vol 3 (1) ◽  
pp. 27
Author(s):  
Mustaffa Samad
Keyword(s):  
Transition Period ◽  
Internet Protocol ◽  
Smooth Transition ◽  
Internet Users ◽  
Ipv6 Transition ◽  
Information And Communication ◽  
Ipv6 Networks ◽  
And Migration ◽  
Set Up ◽  
Design And Testing

The Internet has been an integral part of the Information and Communication Technology (ICT) community in recent years. New internet users have been growing steadily over the years. This has lead to the depletion of new Internet Protocol (IP) addresses worldwide. To overcome this predicament, the new Internet Protocol version 6 (IPv6) had been introduced. The existing Internet Protocol version 4 (IPv4) is expected to be eventually replaced by this IPv6. The changeover from IPv4 to IPv6 is expected to be implemented progressively. During this transition period, these two protocols are expected to coexist for a number of years. IPv4-to-IPv6 transition tools have been designed to facilitate a smooth transition from IPv4 to IPv6. The two most basic IPv4-to-IPv6 transition tools available are the hybrid stack mechanism and tunneling. Tunneling is the encapsulation of IPv6 traffic within IPv4 packets so they can be sent over an IPv4 infrastructure. This project was initiated to set up an experimental IPv6 testbed, in order to study the performance as well as transition and migration issues of IPv6 networks under controlled conditions. This paper looks at how tunneling can be performed over existing internetwork infrastructure at Fakulti Kejuruteraan Elektrik (FKE), UiTM.

Topping-off technique for stabilization of lumbar degenerative instabilities in 322 patients

2020 ◽  
Vol 32 (3) ◽  
pp. 366-372
Author(s):  
Sandro M. Krieg ◽  
Nele Balser ◽  
Haiko Pape ◽  
Nico Sollmann ◽  
Lucia Albers ◽  
...  
Keyword(s):  
Patient Satisfaction ◽  
Interbody Fusion ◽  
Smooth Transition ◽  
Lumbar Pain ◽  
Adjacent Segment ◽  
Lumbar Interbody Fusion ◽  
Rod System ◽  
Reoperation Rates ◽  
Topping Off

OBJECTIVESemi-rigid instrumentation (SRI) was introduced to take advantage of the concept of load sharing in surgery for spinal stabilization. The authors investigated a topping-off technique in which interbody fusion is not performed in the uppermost motion segment, thus creating a smooth transition from stabilized to free motion segments. SRI using the topping-off technique also reduces the motion of the adjacent segments, which may reduce the risk of adjacent segment disease (ASD), a frequently observed sequela of instrumentation and fusion, but this technique may also increase the possibility of screw loosening (SL). In the present study the authors aimed to systematically evaluate reoperation rates, clinical outcomes, and potential risk factors and incidences of ASD and SL for this novel approach.METHODSThe authors collected data for the first 322 patients enrolled at their institution from 2009 to 2015 who underwent surgery performed using the topping-off technique. Reoperation rates, patient satisfaction, and other outcome measures were evaluated. All patients underwent pedicle screw–based semi-rigid stabilization of the lumbar spine with a polyetheretherketone (PEEK) rod system.RESULTSImplantation of PEEK rods during revision surgery was performed in 59.9% of patients. A median of 3 motion segments (range 1–5 segments) were included and a median of 2 motion segments (range 0–4 segments) were fused. A total of 89.4% of patients underwent fusion, 73.3% by transforaminal lumbar interbody fusion (TLIF), 18.4% by anterior lumbar interbody fusion (ALIF), 3.1% by extreme lateral interbody fusion (XLIF), 0.3% by oblique lumbar interbody fusion (OLIF), and 4.9% by combined approaches in the same surgery. Combined radicular and lumbar pain according to a visual analog scale was reduced from 7.9 ± 1.0 to 4.0 ± 3.1, with 56.2% of patients indicating benefit from surgery. After maximum follow-up (4.3 ± 1.8 years), the reoperation rate was 16.4%.CONCLUSIONSThe PEEK rod concept including the topping-off principle seems safe, with at least average patient satisfaction in this patient group. Considering the low rate of first-tier surgeries, the presented results seem at least comparable to those of most other series. Follow-up studies are needed to determine long-term outcomes, particularly with respect to ASD, which might be reduced by the presented approach.

Facing the challenge of 2017: beet juice and ion exchange based softening technologies

2014 ◽  
pp. 745-749 ◽  
Author(s):  
Marlene Beyerle ◽  
François Rousset ◽  
Nicolas-Julian Hilbold
Keyword(s):  
Ion Exchange ◽  
Critical Role ◽  
Regeneration System ◽  
Associated Production ◽  
Combined Use ◽  
Common Ion

This article will review common ion exchange-based softening technologies, describing how the most popular of them, the New Regeneration System (NRS) process, might be a key answer in facing the changes coming in 2017. The process’s principles and advantages will be explained, as well as the associated production-regeneration sequence. The combined use of additional technologies can play a critical role as well, and this article will demonstrate how the integration of additional technologies – in this case chromatography – can increase competitiveness.

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