210 The Longitudinal Cutting on Hollow Glass Cylinders : In the Case of Short Length

2015 ◽  
Vol 2015.51 (0) ◽  
pp. _210-1_-_210-2_
Author(s):  
Yukari AIZAWA ◽  
Shintaro TAMURA ◽  
Atsushi HASHIMOTO
Keyword(s):  
Short Length ◽  
Hollow Glass ◽  
Longitudinal Cutting

The Longitudinal Cutting on Hollow Glass Cylinders

2016 ◽  
Vol 702 ◽  
pp. 145-149
Author(s):  
Yukari Aizawa ◽  
Shintaro Tamura ◽  
Akinori Okamoto ◽  
Atsushi Hashimoto
Keyword(s):  
Hollow Cylinder ◽  
Longitudinal Section ◽  
Crushing Strength ◽  
Cutting Method ◽  
Hollow Glass ◽  
Sintered Metal ◽  
Cutting Experiment ◽  
Hollow Cylinders ◽  
Time Required ◽  
Longitudinal Cutting

This paper presents experimental data and discussions concerning “Elastic Working” which exploits the cutting of hollow glass cylinders at the longitudinal section. Here, “Elastic Working” indicates the cutting method for glass or ceramics using natural cracks occurring at the fracture points of brittle materials. “Elastic Working” has the significant characteristics that the amount of energy required is very small, the time required is very short, and so on. Hollow cylinders made of Pyrex glass were used in the cutting experiment. Using the presented cutting method, the hollow cylinders could be cut instantaneously at the desired longitudinal section. The experiment to examine the cutting load of the hollow cylinder was tried using brittle plaster material as well as glass. It was found that the cutting load of the hollow cylinder was consistent with the load determined from the radial crushing strength on “Sintered metal bearing”.

Management Measurement Scale As A Reference To Determine Interval In A Variable

2018 ◽  
Vol 2 (1) ◽  
pp. 45-54
Author(s):  
Qurotul Aini ◽  
Siti Ria Zuliana ◽  
Nuke Puji Lestari Santoso
Keyword(s):  
Information Technology ◽  
Quantitative Data ◽  
Rating Scale ◽  
Semantic Differential ◽  
Short Length ◽  
Measurement Scale ◽  
Measuring Instrument ◽  
Guttman Scale ◽  
Measurement Scales ◽  
Thurstone Scale

The scale is usually used to check and determine the value of a qualitative factor in quantitative measures. The measurement scale is a management in agreement that is used as a reference to determine the short length of the interval that is in the measuring instrument, so that the measuring instrument when used in measurements will produce quantitative data. The results of the scale management calculation must be interpreted carefully because in addition to producing a rough picture, the respondent's answers are not just straightforward to be trusted. Types of measurement scales: Likert scale, Guttman scale, semantic differential scale, rating scale, Thurstone scale, Borgadus scale, and various other measurement management scales. One of the most difficult jobs for information technology researchers faced with the necessity of measuring variables is: finding directions in the midst of many existing sizes. If there is a good size for a particular variable, it seems that there are not many reasons to compile a new size yourself. Keywords: Scale, Measurement, Variables.

Novel phase-corrected horn antenna of short length

1988 ◽  
Vol 24 (5) ◽  
pp. 292
Author(s):  
O.W. Ata ◽  
T.M. Benson
Keyword(s):  
Horn Antenna ◽  
Short Length

Correlation of fatigue behavior and dynamic mechanical properties of hybrid composites of polypropylene/short glass fibers/hollow glass beads

2021 ◽  
pp. 089270572199319
Author(s):  
Gustavo B Carvalho
Keyword(s):  
Stress Relaxation ◽  
Flexural Strength ◽  
Relaxation Rate ◽  
Hybrid Composites ◽  
Fatigue Behavior ◽  
Glass Fibers ◽  
Glass Beads ◽  
Hollow Glass ◽  
Dynamic Mechanical ◽  
Short Glass

Ternary hybrid composites of Polypropylene (PP)/Short Glass Fibers (GF)/Hollow Glass Beads (HGB) were prepared using untreated and aminosilane-treated HGB, compatibilized with maleated-PP, and with varying total and relative GF/HGB contents. Static/short-term flexural strength properties data revealed, through lower flexural strength values, that the presence of untreated HGB particles induces to fiber-polymer interfacial decoupling at much higher extent than in the presence of aminosilane-treated HGB particles. This phenomenon is also evident when evaluating the data from displacement-controlled three-point bending fatigue tests. Monitored up to 106 cycles, the analyzed hybrid composites presented distinct performance relative to their fatigue stress relaxation rate: the lower the matrix-reinforcements’ interfacial adhesion, more pronounced the stress relaxation rate as a function of the number of fatigue cycles. Dynamic Mechanical Thermal Analysis (DMTA) results could successfully reveal the hybrid composites behavior at the microstructural level when they were submitted to both static flexural test and fatigue, depending on the degree of interfacial interactions between the polymer matrix of PP and the hybrid reinforcements of GF and HGB (with and without aminosilane surface treatment).

scholarly journals Association of Emergency Department Waiting Times With Patient Experience in Admitted and Discharged Patients

2021 ◽  
Vol 8 ◽  
pp. 237437352110114
Author(s):  
Andrew Nyce ◽  
Snehal Gandhi ◽  
Brian Freeze ◽  
Joshua Bosire ◽  
Terry Ricca ◽  
...  
Keyword(s):  
Emergency Department ◽  
Length Of Stay ◽  
Patient Experience ◽  
Waiting Times ◽  
Hospital Length ◽  
Short Length ◽  
Hospital Length Of Stay ◽  
Patient’S Experience ◽  
Discharged Patients ◽  
The Impact

Prolonged waiting times are associated with worse patient experience in patients discharged from the emergency department (ED). However, it is unclear which component of the waiting times is most impactful to the patient experience and the impact on hospitalized patients. We performed a retrospective analysis of ED patients between July 2018 and March 30, 2020. In all, 3278 patients were included: 1477 patients were discharged from the ED, and 1680 were admitted. Discharged patients had a longer door-to-first provider and door-to-doctor time, but a shorter doctor-to-disposition, disposition-to-departure, and total ED time when compared to admitted patients. Some, but not all, components of waiting times were significantly higher in patients with suboptimal experience (<100th percentile). Prolonged door-to-doctor time was significantly associated with worse patient experience in discharged patients and in patients with hospital length of stay ≤4 days. Prolonged ED waiting times were significantly associated with worse patient experience in patients who were discharged from the ED and in inpatients with short length of stay. Door-to-doctor time seems to have the highest impact on the patient’s experience of these 2 groups.

Strategy to Characterize Electromigration Short Length Effects in Cu/low-k Interconnects

2021 ◽  
Author(s):  
Z. Zhang ◽  
M. Kraatz ◽  
M. Hauschildt ◽  
S. Choi ◽  
A. Clausner ◽  
...  
Keyword(s):  
Short Length ◽  
Low K ◽  
Length Effects

scholarly journals Parametric CFD Thermal Performance Analysis of Full, Medium, Half and Short Length Dimple Solar Air Tube

2021 ◽  
Vol 13 (11) ◽  
pp. 6462
Author(s):  
Mir Waqas Alam ◽  
Basma Souayeh
Keyword(s):  
Thermal Performance ◽  
Energy Transport ◽  
Hydraulic Performance ◽  
Short Length ◽  
Working Fluid ◽  
Solar Air Heater ◽  
Hydraulic Characteristics ◽  
Height Ratio ◽  
Pitch Ratio ◽  
Full Medium

In the present decade, research regarding solar thermal air heaters (SAHs) has noticed a continuous progression in thermo-hydraulic performance augmentation approaches. There now exists a wide variety of thermo-hydraulic performance augmentation approaches and researchers have designated various structures. Nevertheless, there seems to be no generalization to any of the approaches employed. The present numerical investigation reports on the thermo-hydraulic characteristics and thermal performance for flow through a varied length (full, medium, half, and short length) dimple solar air heater (SAH) tube. The study highlights recent developments on enhanced tubes to augment heat transfer in SAH. The influence of different length ratio, dimple height ratio (H), and pitch ratio (s) on thermo-hydraulic characteristics have been investigated in the Reynolds number (Re) range from 5000 to 25,000. Air is used as the working fluid. The commercial software ANSYS Fluent is used for simulation. The shear stress transport (SST) model is used as the turbulence model. Thermal energy transport coefficient is increased in the full-length dimple tube (FLDT), compared to the medium-length dimple tube (MLDT), half-length dimple tube (HLDT) and short-length dimple tube (SLDT). Similarly, the pitch ratio (s) has more influence on Nusselt number (Nu) compared to the dimple height ratio (H). The friction factor decreases with an increase in pitch ratio. Nu increases and f decreases with increasing Re for all combinations of H and s. Low s and higher H yields high enhancement of HT and PD. Integration of artificial roughness on the tube increases the values of Nu and f by 5.12 times and 77.23 times for H = 0.07, s = 1.0 at Re value of 5000 and 25,000, respectively, in regard to the plain tube. For all the tested cases, the thermo-hydraulic performances (η) are greater than unity.

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