Note Loss of the Y chromosome from individual metaphases is common in metaphase cells from both PHAstimulated lymphocytes and spontaneously dividing bone marrow cells. The frequency of Y loss is greater in older men, and the size of the 45,X,-Y cell population probably increases gradually with advancing age. (In females, a corollary loss of one X chromosome also occurs with advancing age.) This...

Let r, s, q,m, n ∈ N be such that s ≥ r ≤ q. Let Y be a fibered manifold with m-dimensional basis and n-dimensional fibers. All natural affinors on (J(Y,R)0) are classified. It is deduced that there is no natural generalized connection on (J(Y,R)0). Similar problems with (J(Y,R)0) instead of (J(Y,R)0) are solved.

In this paper, we introduce a method by which we can find a close connection between the set of prime $z$-ideals of $C(X)$ and the same of $C(Y)$, for some special subset $Y$ of $X$. For instance, if $Y=Coz(f)$ for some $fin C(X)$, then there exists a one-to-one correspondence between the set of prime $z$-ideals of $C(Y)$ and the set of prime $z$-ideals of $C(X)$ not containing $f$. Moreover, c...

Según la OMS (1), el tabaquismo y el alcoholismo son las drogodependencias más extendidas en nuestra sociedad, y representan, respectivamente, la primera y la tercera causa de años de vida con discapacidades. El Observatorio Español sobre Drogas asegura en su último informe que la mayoría de los españoles consume bebidas alcohólicas esporádica o habitualmente (2). En 2008, 72,9% de estudiantes ...

This communication reports an analysis of Tn5yIS50 target site selection by using an extensive collection of Tn5 and IS50 insertions in two relatively small regions of DNA (less than 1 kb each). For both regions data were collected resulting from in vitro and in vivo transposition events. Since the data sets are consistent and transposase was the only protein present in vitro, this demonstrates...

it is required by law to keep an eye on any human embryo created in any other way than by the natural proceedings. In December 2002, the High Court seriously undermined the HFEA's position when it decided that its ruling that allowed the Hashmi family to use embryo selection had exceeded its legal powers. In May, however, the appeal court overturned that judgment and cleared the last legal hurd...

Kobayashi, E. (in press). Identification of tumor-infiltrating cells in malignant rhabdoid tumor of the kidney and associated metastatic potential. Clinical Cancer Research. high school students in Japan: Examining risk and protective lifestyle factors related to substance use.

There are two ways to write about a branch of science for an audience of non-scientists; one is to try and make the audience understand the basic principles of the subject, the other is to entertain them by a rapid succession of pieces of information. Steve Jones's latest book falls firmly into the second category. Given that the subject is the biology of the human male, there is of course no s...

Multiple kernel learning aims at simultaneously learning a kernel and the associated predictor in supervised learning settings. For the support vector machine, an efficient and general multiple kernel learning (MKL) algorithm, based on semi-infinite linear progamming, has been recently proposed. This approach has opened new perspectives since it makes the MKL approach tractable for large-scale ...

R y FIGURE 1. Sketch of colliding ux tubes in cross section. The solid lines are the tube boundaries. The radius of the isolated tube is R, the length of the interaction region is L, the y axis is chosen parallel to the contact surface, and is the fractional deformation. 16 y x L V in V in V A V A l 2b FIGURE 2. (a) Sketch of the magnetic ux surfaces of the colliding tubes, projected onto the a...