The role of histamine H1 and H2 receptors in the lung is not clear. H1 receptor blockade results in bronchodilatation and inhibition of histamine induced bronchoconstriction. H2 receptor blockade in vitro prevents the normal negative feedback of histamine on further mediator release in antigen challenge. Bronchospasm in guinea pigs given antigen challenge is enhanced by previous administration ...

The effects of voice open quotient and glottal waveform asymmetry are studied in the spectral domain. The hypothesis that the amplitude difference of the first and second harmonics of the inverse-filtered voice signal (H1*-H2*) is a reliable spectral correlate of the open quotient is tested. Theoretical arguments and experiments are reported. In the theoretical part, analytical formulas are der...

The following proposition is true (1) Let G, H be non empty groupoids and x be an element of ∏ 〈G,H〉. Then there exists an element g of G and there exists an element h of H such that x = 〈g, h〉. Let G1, G2, H1, H2 be non empty groupoids, let f be a map from G1 into H1, and let g be a map from G2 into H2. The functor Gr2Iso(f, g) yields a map from ∏ 〈G1, G2〉 into ∏ 〈H1,H2〉 and is defined by the ...

In this article, we discuss the existence of weak solution for the nonlinear system  − div ( h1(|∇u|) |∇u|p−2∇u ) = f(x, u, v) in Ω, − div ( h2(|∇v|) |∇v|p−2∇v ) = g(x, u, v) in Ω, u = v = 0 on ∂Ω, where Ω is a bounded smooth open set in Rn, p ≥ 2 and h1, h2 ∈ C(R,R). Using variational methods, under suitable assumptions on the nonlinearities, we show the existence of weak solution.

The aim of the present study was to investigate whether and by which mechanism; histamine can induce state-dependent retrieval of passive avoidance task. The pre-training or pre-test intracerebroventricular (i.c.v.) injection of histamine (20µg/mouse) impaired retrieval, when it was tested 24 h later. In the animals, which retrieval was impaired due to histamine pre-training administration, pre...

All \labelings" discussed in this paper are vertex labelings. We call a labeling l of G an N -labeling if there exists a connected induced subgraph H of G with Px2V (H) l(x) = i for every integer i, 1 i N . Then c(G) is the largest integer N such that G has an N labeling. A labeling l of G is called irredundant if, for all connected induced subgraphs H1 and H2, Px2V (H1) l(x) = Px2V (H2) l(x) i...

1.1 Identifying Whether a Coin is Biased Lemma 1 We need O( 1 2 ) coin tosses to discern a biased coin with the probability of 1 2 − for head (and obviously with the probability of 12 + for tail), from an unbiased coin. Proof Consider two hypothesises H1 and H2 where respectively denote biased and unbiased coins. In other words, we have the following hypothesises: { H1 : biased p(h) = 12 − H2 :...

The effects of age, sex, and vocal tract configuration on the glottal excitation signal in speech are only partially understood, yet understanding these effects is important for both recognition and synthesis of speech as well as for medical purposes. In this paper, three acoustic measures related to the voice source are analyzed for five vowels from 3145 CVC utterances spoken by 335 talkers (8...

We investigated the effect of cimetidine, a clinically used H2-receptor antagonist, on the induction of long-term potentiation (LTP) in the dentate gyrus of anesthetized rats. Intracerebroventricular injection of cimetidine (50-100 nmol) inhibited the induction of LTP in a dose-dependent manner. The inhibitory effect of cimetidine was not mimicked by other H2-receptor antagonists (ranitidine, f...

For Bn the unit ball of Cn, we consider Hardy-Orlicz spaces of holomorphic functions H, which are preduals of spaces of BMOA type with weight. We characterize the symbols of Hankel operators that extend into bounded operators from the Hardy-Orlicz H1 into H2 . We also consider the closely related question of integrability properties of the product of two functions, one in H1 and the other one i...