1,592 research outputs found
A New Paradigm Unifying the Concepts in Particle Abrasion and Breakage
This study introduces a new paradigm that unifies abrasion and breakage
concepts, allowing for a holistic understanding of the comminution process. The
significance of this paradigm lies in its ability to present both abrasion and
breakage in a single big picture because both processes can co-occur under
loading as particles are subjected to friction as well as collision. A
comprehensive descriptive framework is employed to this end, which operates in
a log-transformed surface-area-to-volume ratio () and volume () space.
This space facilitates a holistic characterization of the four-dimensional
particle geometry features, i.e., volume (), surface area (), size (),
and shape (). Consequently, this approach enables to systematically
relate the co-occurring abrasion and breakage process to co-evolving particle
shape and size. Transformative concepts including the breakage line, sphere
line, and average shape-conserving line are introduced to describe the limit
states and a special comminution process. This approach also uncovers a
self-similar nature in evolving particle geometry during comminution, which
will be a significant discovery for the granular materials research community
given the most fundamental properties observed in natural phenomena.Comment: 10 pages, 5 figures; No difference from arXiv:2306.04635v1 except the
first page stam
Semi-Automatic Annotation Tool to Build Large Dependency Tree-Tagged Corpus
PACLIC 21 / Seoul National University, Seoul, Korea / November 1-3, 200
Retrograde Tempofilter IIâ„¢ Placement within the Superior Vena Cava in a Patient with Acute Upper Extremity Deep Venous Thrombosis: the Filter Stands on Its Head
The Tempofilter II is a widely used temporary vena cava filter. Its unique design, which includes a long tethering catheter with a subcutaneous anchor, facilitates the deployment and retrieval of the device. Despite this, the Tempofilter II has been used only in the inferior vena cava of patients with lower extremity deep venous thrombosis. In this article, we present a case of superior vena cava filtering using the Tempofilter II in patients with upper extremity deep venous thrombosis
Fracture of a Tempofilter II: an Initial Case Report
Tempofilter II is a device that is used for pulmonary embolism prophylaxis. Since the appearance of the Tempofilter II following withdrawal of the Tempofilter I, it has been reported that the Tempofilter II is safe, effective and useful. Here we report on the first case of a fracture of one leg of the filter and this leg was embedded in the inferior vena cava wall in a 62-year-old man with deep vein thrombosis
Tunable colors of chiral liquid crystal displays
Abstract We report a method of the color variation in the reflective CLC displays depending on thermodynamically and the electric field switching. The reflective wavelength can be thermodynamically switched to reflect green from a cell initially reflecting a red color. Afterwards, the reflective wavelength can be electrically switched to reflect blue color. It is found that continuous decrease of the pitch is mainly originated from the dopant solubility below the critical temperature and stepwise decrease of the pitch is dominantly affected by the thermodynamic property above the critical temperature. The blue color change is a result of the compression to the helical pitches in planar layers in response to the applied voltage
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