Examples of minimal-memory, non-catastrophic quantum convolutional encoders

One of the most important open questions in the theory of quantum convolutional coding is to determine a minimal-memory, non-catastrophic, polynomial-depth convolutional encoder for an arbitrary quantum convolutional code. Here, we present a technique that finds quantum convolutional encoders with such desirable properties for several example quantum convolutional codes (an exposition of our technique in full generality will appear elsewhere). We first show how to encode the well-studied Forney-Grassl-Guha (FGG) code with an encoder that exploits just one memory qubit (the former Grassl-Roetteler encoder requires 15 memory qubits). We then show how our technique can find an online decoder corresponding to this encoder, and we also detail the operation of our technique on a different example of a quantum convolutional code. Finally, the reduction in memory for the FGG encoder makes it feasible to simulate the performance of a quantum turbo code employing it, and we present the results of such simulations.Comment: 5 pages, 2 figures, Accepted for the International Symposium on Information Theory 2011 (ISIT 2011), St. Petersburg, Russia; v2 has minor change

QUASI-IQC-INJECTIVITY

In this work, the notion of injectivity relative to a class of IQC sub modules (namely, IQC-injectivity) has been introduced and studied, which is a generalization quasi-injective module. This notion is closed under direct summands. Several properties and characterizations have been given.We provide a characterization of  semi simple  Artinian ring ,  SI-ring and Dedekind domain in terms of IQC-injective R-module

Synlabia after Severe Monilia Infections: A Case Report

Case. A 25-year-old woman presented with acute urine retention with overflow 6 months after an inadequate treatment of severe monilia infections. Examination revealed complete adhesion between both labia majora. Division of adhesion was done with reconstruction by labial mucocutaneous flap. Complete recovery was achieved with good cosmetic outcome. Conclusion. Labial adhesions whatever their severity is can be surgically divided with complete correction by locally designed flap to reconstruct the introuitus with rapid recovery, good healing, and good cosmetic outcome

Development and Analysis of Different Density Auxetic Cellular Structures

Auxetic structures exhibit negative Poissons ratios in one or more directions. When stretched, they will become fatter or thinner when compressed, in contrast to conventional materials (like rubber, glass, metals, etc.) in the direction normal to the applied loading direction. The present work intends to develop different density auxetic cellular structures, analyze their different mechanical properties and highlights the von-misses stresses develop during compression and tension of these auxetic cellular structures. DOI: 10.17762/ijritcc2321-8169.15010

Time course of oxidative damage in different brain regions following transient cerebral ischemia in gerbils

The time course of oxidative damage in different brain regions was investigated in the gerbil model of transient cerebral ischemia. Animals were subjected to both common carotid arteries occlusion for 5 min. After the end of ischemia and at different reperfusion times (2, 6, 12, 24, 48, 72, 96 h and 7 days), markers of lipid peroxidation, reduced and oxidized glutathione levels, glutathione peroxidase, glutathione reductase, manganese-dependent superoxide dismutase (MnSOD) and copper/zinc containing SOD (Cu/ZnSOD) activities were measured in hippocampus, cortex and striatum. Oxidative damage in hippocampus was maximal at late stages after ischemia (48-96 h) coincident with a significant impairment in glutathione homeostasis. MnSOD increased in hippocampus at 24, 48 and 72 h after ischemia, coincident with the marked reduction in the activity of glutathione-related enzymes. The late disturbance in oxidant-antioxidant balance corresponds with the time course of delayed neuronal loss in the hippocampal CA1 sector. Cerebral cortex showed early changes in oxidative damage with no significant impairment in antioxidant capacity. Striatal lipid peroxidation significantly increased as early as 2 h after ischemia and persisted until 48 h with respect to the sham-operated group. These results contribute significant information on the timing and factors that influence free radical formation following ischemic brain injury, an essential step in determining effective antioxidant intervention

Long-term exposure to xenoestrogens alters some brain monoamines and both serum thyroid hormones and cortisol levels in adult male rats

AbstractThe present study was designed to examine the effect of long-term treatment with the phytoestrogen soy isoflavone [(SIF); 43mg/kg body weight/day] and/or the plastics component bisphenol-A [(BPA); 3mg/kg body weight/day] on some monoamines in the forebrain and both serum thyroid hormones and cortisol levels of adult rats. Significant increases in serotonin (5-HT) and norepinephrine (NE) level, and significant decreases in 5-hydroxyindoleacetic acid (5-HIAA) level and 5-HIAA/5-HT ratio, were observed after treatment with SIF or BPA. Level of dopamine (DA) was increased in SIF-treated group and decreased in BPA-treated group. Activity of monoamine oxidase (MAO) was decreased in all treated groups. The level of serum thyroid hormones (fT3 and fT4) was increased after treatment with SIF and decreased after exposure to BPA, while cortisol level was increased in all treated groups. It may be concluded that long-term exposure to SIF or BPA disrupts monoamine levels in the forebrain of adult rats through alteration in the metabolic pathways of amines and disorders of thyroid hormones and cortisol levels

Consumers' valuation of two packaging aspects for fresh lamb meat: Vacuum and information labels

The use of vacuum packaging for fresh meat with low rate of turnover in the supermarket shelves, as it is the case of lamb meat in Spain, is recommended. Because the amount of mandatory information on fresh-meat labels has increased, there is a need to design new labels to enhance the support for this information. Therefore, to anticipate the consumer''s acceptance of vacuum packaging and the preferences for newly designed labels is of vital importance. This is the objective of the paper; in particular, it measures the consumers'' relative importance of the vacuum packaging and different labels in relation to other important lamb-meat characteristics (type of cut, price, and regional indication). To do that, a choice experiment was used and an error-component random-parameter model with correlated errors was estimated. Results suggest that consumers positively value all of the attributes except for the new designed labels. In particular, consumers positively value the vacuum packaging but to lesser extent than other lamb-meat attributes such as the type of cut, the protected geographical indication certification, and the price. However, consumers only value the vacuum packaging in the case of fresh lamb meat with a protected geographical indication certification. Moreover, this valuation is higher for older consumers who use, to a higher extent, their own direct appraisal of the meat and the information on the label when shopping and give less importance to the presence of liquid around the meat