in this paper we define a new type of rings ”almost powerhermitian rings” (a generalization of almost hermitian rings) and establish several sufficient conditions over a ring r such that, every regular matrix admits a diagonal power-reduction.

[1] Ziegler J, Facchini PJ (2008) Alkaloid Biosynthesis: Metabolism and Trafficking. Annu Rev Plant Biol 59:735–769. doi: 10.1146/annurev.arplant.59.032607.092730 [2] Averesch NJH, Kayser O (2014) Assessing Heterologous Expression of Hyoscyamine 6β-Hydroxylase – A Feasibility Study. Procedia Chem 13:69–78. doi: http://dx.doi.org/10.1016/j.proche.2014.12.008 [3] Kim, HK, Choi YH, Verpoorte R, (2...

We present a 19-year-old patient with hematologic and neurologic manifestations associated with Wilson's disease. Idiopathic thrombocytopenia was diagnosed in October 2009. Bone marrow aspiration was normal. Gradually her neurologic and psychiatric symptoms emerged, dysarthria, writing apraxia, learning difficulties, emotionalism and eventually dystonia of hands. The serum ceruloplasmin was low...

let $r$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎a right $r$-module $m$ is called $(n‎, ‎d)$-projective if $ext^{d+1}_r(m‎, ‎a)=0$ for every $n$-copresented right $r$-module $a$‎. ‎$r$ is called right $n$-cocoherent if every $n$-copresented right $r$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $r$-module is $(n‎, ‎d)$-projective‎. ‎$r$ ...

the zero-divisor graph of a commutative ring r with respect to nilpotent elements is a simple undirected graph $gamma_n^*(r)$ with vertex set z_n(r)*, and two vertices x and y are adjacent if and only if xy is nilpotent and xy is nonzero, where z_n(r)={x in r: xy is nilpotent, for some y in r^*}. in this paper, we investigate the basic properties of $gamma_n^*(r)$. we discuss when it will be eu...

BACKGROUND Wilson's disease with osseomuscular type is a rare condition, which often lacks typical hepatic and neurological symptoms and causes misdiagnoses easily. During the past 10 years, eight Chinese patients of osseomuscular type of Wilson's disease were identified in our clinic. METHODS Clinical information was gathered from medical records and follow-ups. The genetic testing was pe...

FROM JAROSITE AT MERIDIANI PLANUM TO GOETHITE AT GUSEV CRATER. G. Klingelhöfer, D.S. Rodionov , R.V. Morris, C. Schröder, P.A. de Souza, D.W. Ming, A.S. Yen, B. Bernhardt, F. Renz, I. Fleischer, T. Wdowiak, S.W. Squyres, and the Athena Science Team. Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität, Staudinger Weg 9, D-55128 Mainz, Germany, [email protected]...

use of the double ring infiltrometer to measure soil water infiltration in center pivot irrigation systems isn’t an accurate approach because the real conditions of infiltration under center pivot sprinklers is different from what happens in the double ring. in this study the infiltration parameters were evaluated in real conditions of a center pivot system. for this purpose a single ring with ...