Results 61 to 70 of about 2,596,999 (237)
Restricted-sum-dominant sets [PDF]
arXiv, 2017 Let $A$ be a nonempty finite subset of an additive abelian group $G$. Define $A + A := \{a + b : a, b \in A\}$ and $A \dotplus A := \{a + b : a, b \in A~\text{and}~ a \neq b\}$. The set $A$ is called a {\em sum-dominant (SD) set} if $|A + A| > |A - A|$, and it is called a {\em restricted sum-domonant (RSD) set} if $|A \dotplus A| > |A - A|$.
arxiv
Intraspecific Variation of Centruroides Edwardsii Venom from Two Regions of Colombia
Toxins, 2014 We report the first description studies, partial characterization, and intraspecific difference of Centruroides edwardsii, Gervais 1843, venom. C. edwardsii from two Colombian regions (Antioquia and Tolima) were evaluated.
Sebastián Estrada-Gómez +3 more
doaj +1 more source
Phospholipase A2 as a mechanosensor
Biophysical Journal, 1995 Osmotic swelling of large unilamellar vesicles (LUVs) causes membrane stretching and thus reduces the lateral packing of lipids. This is demonstrated to modulate strongly the catalytic activity of phospholipase A2 (PLA2) toward a fluorescent phospholipid, 1-palmitoyl-2-[(6-pyren-1-yl)]decanoyl-sn-glycero-3-phosphocholine (PPDPC) residing in LUVs ...
Paavo K.J. Kinnunen +1 more
openaire +3 more sources
Sharp Bounds for Neuman Means in Terms of Geometric, Arithemtic and Quadratic Means [PDF]
arXiv, 2014 In this paper, we find the greatest values $\alpha_{1}$, $\alpha_{2}$, $\alpha_{3}$, $\alpha_{4}$, $\alpha_{5}$, $\alpha_{6}$, $\alpha_{7}$, $\alpha_{8}$ and the least values $\beta_{1}$, $\beta_{2}$, $\beta_{3}$, $\beta_{4}$, $\beta_{5}$, $\beta_{6}$, $\beta_{7}$, $\beta_{8}$ such that the double inequalities $$A^{\alpha_{1}}(a,b)G^{1-\alpha_{1}}(a,b)<
arxiv
When a C*-algebra is a coefficient algebra for a given endomorphism [PDF]
arXiv, 2005 The paper presents a criterion for a C*-algebra to be a coefficient algebra associated with a given ...
arxiv
Phospholipase A Activity in the Epidermis
Journal of Investigative Dermatology, 1972 Phospholipase A activity has been demonstrated in cow snout epidermis. The activity was higher in the upper layers of the epidermis. The enzyme has been purified by preparing aqueous extracts of acetone powders obtained from epidermal homogenates. The most active preparation gave a pH optimum of 8.3 for the release of free fatty acids from phosphatidyl
V.J.W. Long, H.J. Yardley
openaire +3 more sources
Snake Venom Hemotoxic Enzymes: Biochemical Comparison between Crotalus Species from Central Mexico
Molecules, 2019 Snakebite envenoming is a serious medical problem in different areas of the world. In Latin America, the major prevalence is due to snakes of the family Viperidae, where rattlesnakes (Crotalus) are included.
Octavio Roldán-Padrón +7 more
doaj +1 more source
Singular Hochschild Cohomology and Gerstenhaber Algebra Structure [PDF]
arXiv, 2015 In this paper, we define the singular Hochschild cohomology groups $HH_{sg}^i(A, A)$ of an associative $k$-algebra $A$ as morphisms from $A$ to $A[i]$ in the singular category $D_{sg}(A\otimes_k A^{op})$ for $i\in \mathbb{Z}$. We prove that $HH_{sg}^*(A, A)$ has a Gerstenhaber algebra structure and in the case of a symmetric algebra $A$, $HH_{sg}^*(A ...
arxiv
Action of phospholipase A2 and phospholipase C on Escherichia coli
Archives of Biochemistry and Biophysics, 1974 The action of exogenous phospholipases on Escherichia coli has been examined. Cells harvested in late log phase were found to be completely resistant to the action of phospholipases A2 and C. Treatment of cells with Tris and EDTA was required to make the phospholipids in the cell accessible to these phospholipases.
Duckworth, D.H. +4 more
openaire +3 more sources
arXiv, 2014 In a ring $A$ an ideal $I$ is called (principally) nilary if for any two (principal) ideals $V, W$ in $A$ with $VW\subseteq I,$ then either $V^n\subseteq I$ or $W^m\subseteq I,$ for some positive integers $m$ and $n$ depending on $V$ and $W;$ a ring $A$ is called (principally) nilary if the zero ideal is a (principally) nilary ideal~\cite ...
arxiv