To the Editor: 1 work at an overseas American institution, and there are extended delays in receipt of journals by our medical library. So, it was only a few days ago that I saw the article entitled “Weak Association between HLA-B27 and the Spondylarthropies in Lebanon,” which was published in the February 1997 issue of Arthritis & Rheumatism (1). I would like to draw the attention of the Leban...

Consensus sequences of the Rattus norvtgicus Bland B2 repeats. During our sequence analysis of the flanking and intronic regions of six rat (Rattus norvqlcua) gamma-cryatallin genes, we encountered a number of repetitive elements closely reltted to either the murine Alu Bl or B2 type repeats (1,2). To our Knowledge no consensus sequence of either rat repeat has been published. We report here th...

To the Editor: 1 work at an overseas American institution, and there are extended delays in receipt of journals by our medical library. So, it was only a few days ago that I saw the article entitled “Weak Association between HLA-B27 and the Spondylarthropies in Lebanon,” which was published in the February 1997 issue of Arthritis & Rheumatism (1). I would like to draw the attention of the Leban...

Abstract Statistical analysis of reanalysis and observed data reveals that high dust surface mass concentration in northern Greenland is associated with a Pacific Decadal Oscillation like pattern its negative phase the North as well La Niña conditions tropical region. The sea temperature anomalies realm resemble Interdecadal (IPO). atmospheric circulation pattern, form wave‐train from to Eurasi...

<p style='text-indent:20px;'>We investigate Hardy-Rellich inequalities for perturbed Laplacians. In particular, we show that a non-trivial angular perturbation of the free operator typically improves inequality, and may also provide an estimate which does not hold in case. The main examples are related to introduction magnetic field: this is manifestation diamagnetic phenomenon, has been ...

We follow the idea of Wang [21] to show existence global weak solutions Cauchy problems Landau-Lifshtiz type equations and related heat flows from a \begin{document}$ n $\end{document}-dimensional Euclidean domain id="M2">\begin{document}$ \Omega $\end{document}</tex...

Amaç: Bu çalışmada öncelikle şalkonlar ve bu şalkon türevlerinin hidrazitler ile reaksiyonu sonucu halka kapanması oluşan 4,5-dihidro-1H-pirazol yapısındaki bileşikler sentez edilmiş sentezlenen tüm bileşiklerin antimikrobiyal antitüberküler etkileri araştırılmıştır. Gereç Yöntem: Benzaldehit asetofenon alkali ortamda metanol içindeki reaksiyonuyla elde edilen şalkonların, hidrazit türevleri et...

The vast majority of mobile robotic systems have been designed to solve “one off”, unique problems, with specialized sensors, robot hardware and computation; and porting robotics software from one platform to another has always been a thorny problem. In this paper, we show how by choosing an appropriate level of abstraction, one can write hardware-independent controllers for robots that perform...

Instrumental (or operant) conditioning, a form of animal learning, is similar to reinforcement learning (Watkins, 1989) in that it allows an agent to adapt its actions to gain maximally from the environment while only being rewarded for correct performance. But animals learn much more complicated behaviors through instrumental conditioning than robots presently acquire through reinforcement lea...