Recent technologic advancement enables us to prepare leukocyte-depleted or UVB-irradiated platelet concentrates for possible prevention of primary HLA alloimmunization. However, it is yet not known which of these two approaches is more efficacious. Because well-controlled studies cannot be easily conducted in human subjects to answer this question, a series of experiments were performed using a...

Let Pn denote the poset of matchings on 2n points on a circle, labeled 1, 2, . . . , 2n in cyclic order, in which we define an element to be less than another element if it can be obtained by an uncrossing. Let Pn,k denote the level of the poset with k crossings. Let Pn,k denote the level of the poset with k crossings. We study the cyclic sieving phenomenon of Pn,k. It is known that the triple ...

C2N is an ordered two-dimensional carbon nitride with a high density (1.7 × 1014 cm–2) of 3.1 Å-sized nanopores, making it promising for high-flux gas sieving energy-efficient He and H2 purification. Herein, we discuss the accurate calculation potential energy surfaces He, H2, N2, CO2 across to characterize gas-sieving C2N. We compare surface derived from density-functional theory calculations ...

A set S of positive integers has distinct subset sums if there are 2|S| distinct elements of the set {∑ x∈X x : X ⊂ S } . Let f(n) = min{maxS : |S| = n and S has distinct subset sums}. Erdős conjectured f(n) ≥ c2n for some constant c. We give a construction that yields f(n) < 0.22002 · 2n for n sufficiently large. This now stands as the best known upper bound on f(n).

We present a numerical method for approximating an indefinite integral by the double exponential sinc method. The approximation error of the proposed method with N integrand function evaluations is O(exp(−c1N/ log(c2N))) for a reasonably wide class of integrands, including those with endpoint singularities. The proposed method compares favorably with the existing formulas based on the ordinary ...

BACKGROUND Organ transplantation currently requires long-term immunosuppression. This is associated with multiple complications including infection, malignancy and other toxicities. Immunologic tolerance is considered the optimal solution to these limitations. OBJECTIVE To develop a simple and non-toxic regimen to induce mixed chimerism and tolerance using mesenchymal stem cell (MSC) in a mur...