نتایج جستجو برای: separator
تعداد نتایج: 3821 فیلتر نتایج به سال:
A disposable on-chip whole blood/plasma separator, which is able to separate plasma from whole blood by capillary movement through a bead-packed microchannel, has been designed, fabricated and characterized in this work. Various sized silica beads were packed inside a microchannel using a slurry-bump pattern that prevented the beads from passing through the microchannel. The bead-packed microch...
We consider the parameterized problem, whether a given set of n disks (of bounded radius) in the Euclidean plane contains k non-intersecting disks. We expose an algorithm running in time n √ , that is—to our knowledge—the first algorithm for this problem with running time bounded by an exponential with a sublinear exponent. The results are based on a new “geometric √ ·-separator theorem” which ...
The operating temperatures of current electrochemical energy storage devices are limited due to electrolyte degradation and separator instability at higher temperatures. Here we demonstrate that a tailored mixture of materials can facilitate operation of supercapacitors at record temperatures, as high as 200°C. Composite electrolyte/separator structures made from naturally occurring clay and ro...
For improved cross section measurements of the reaction Cða; gÞO in inverted kinematics, a recoil separator ERNA is developed at the 4MV Dynamitron tandem accelerator in Bochum to detect directly the O recoils with high efficiency. The O recoils are produced by the C projectiles in a windowless He gas target. We report on the charge state distribution of the O recoils, the gas target density, t...
A disjoint NP-pair is a pair (A,B) of nonempty, disjoint sets A and B such that both A and B belong to the complexity class NP.1 We let DisjNP denote the collection of all disjoint NP-pairs. A separator of a disjoint NP-pair (A,B) is a set S such that A ⊆ S and B ⊆ S (Figure 1). A fundamental question is whether (A,B) has a separator belonging to P. In this case the pair is P-separable; otherwi...
We present an efficient algorithm that lists the minimal separators of a 3-connected planar graph in O(n) per separator.
The relatively new technology of rotary gas-liquid separation has been advanced by the development of a rotating centrifugal separator closely coupled to a centrifugal turbocompressor. This development by a major equipment manufacturer included the creation and calibration of an integrated design suite, and the use of this tool to optimize a separator/compressor stage. The compression and separ...
The c-Balanced Separator problem is a graph-partitioning problem in which given a graph G, one aims to find a cut of minimum size such that both the sides of the cut have at least cn vertices. In this paper, we present new directions of progress in the c-Balanced Separator problem. More specifically, we propose a new family of mathematical programs, which depends upon a parameter ǫ > 0, and ext...
The red sand which is known as Teri sand in Tamil Nadu consists of 5.5% Total Heavy Minerals (THM) out of which 3.7% is ilmenite. The other minerals, zircon, sillimanite and garnet are in the order of abundance identified. On processing this feed to recover ilmenite by using spirals followed by dry high intensity magnetic separator and high tension separator, the ilmenite concentrate obtained c...
Paul Erd} os has conjectured that Menger's theorem extends to innnite graphs in the following way: whenever A; B are two sets of vertices in an innnite graph, there exist a set of disjoint A{B paths and an A{B separator in this graph so that the separator consists of a choice of precisely one vertex from each of the paths. We prove this conjecture for graphs that contain a set of disjoint paths...
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