5,172 research outputs found
DPA on quasi delay insensitive asynchronous circuits: formalization and improvement
The purpose of this paper is to formally specify a flow devoted to the design
of Differential Power Analysis (DPA) resistant QDI asynchronous circuits. The
paper first proposes a formal modeling of the electrical signature of QDI
asynchronous circuits. The DPA is then applied to the formal model in order to
identify the source of leakage of this type of circuits. Finally, a complete
design flow is specified to minimize the information leakage. The relevancy and
efficiency of the approach is demonstrated using the design of an AES
crypto-processor.Comment: Submitted on behalf of EDAA (http://www.edaa.com/
PDB8 CLINICAL BENEFITS OF PROLONGED-RELEASE NICOTINIC ACID (NIASPAN®) AND EZETIMIBE IN STATIN-TREATED TYPE-2 DIABETES PATIENTS FAILING TO REACH TARGET CHOLESTEROL LEVELS
PCV31 HEALTH ECONOMIC ASSESSMENT OF RAISING HDL-C WITH PROLONGED-RELEASE NICOTINIC ACID (NIASPAN®) WHEN ADDED TO STATIN THERAPY IN PATIENTS WITH DYSLIPIDEMIA AND TYPE 2 DIABETES:AN ANALYSIS FOR SWEDEN
PDB9 PROJECTED IMPACT ON CORONARY HEART DISEASE AT 5, 10 AND 35 YEARS OF ADDING PROLONGED-RELEASE NICOTINIC ACID (NIASPAN®) TO STATIN TREATMENT IN PATIENTS WITH TYPE-2 DIABETES
PDB25 FIXED COMBINATION METFORMIN PLUS GLIBENCLAMIDE (GLUCOVANCE®) IS COST AND LIFE SAVING COMPARED TO METFORMIN PLUS ROSIGLITAZONE IN TYPE-2 DIABETES PATIENTS IN FRANCE
PCV68 COST-EFFECTIVENESS OF RAISING HDL-CWITH PROLONGED-RELEASE NICOTINIC ACID (NIASPAN®) IN STATIN-TREATED PATIENTS WITH PERSISTENT DYSLIPIDEMIA IN AUSTRIAN, SWEDISH AND NORWEGIAN SETTINGS
Ultrastructural Study of Yam Tuber as Related to Postharvest Hardness
Usually, parenchyma cell walls of monocotyledons do not develop secondary walls; however a few days after harvesting, the yam tuber of Dioscorea dumetorum starts to harden. Two or three weeks Iater, hardness is so pronounced that the tubers cannot be eaten, even after a long cooking time.
Cytochemical studies using autofluorescence or some fluorescent dyes, such as phloroglucinol hydrochloride showed that the thin, and flexible cell walls of parenchyma tubers very quickly became fully lignified after harvesting. Ultrastructura 1 stud ies of the hardened ce 11 wa 11 s showed very thick secondary wa 11 s and very deep pit apertures. These secondary walls reacted strong ly with li gn in reactants such as potassium permanganate. The use of a radioactive (l \u27• C) ce llulose precursor, uri dine- 5\u27-d ipho sphateglucose, confirmed the formation of such secondary walls. The lignification started from the corners of the cells around intercellular spaces and proceeded along the walls
Demande de passage à un noeud de type Tier 2 de WLCG pour le noeud de grille du Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
Structural analysis of the spiroplasma virus, SpV4: implications for evolutionary variation to obtain host diversity among the Microviridae
AbstractBackground: Spiroplasma virus, SpV4, is a small, non-enveloped virus that infects the helical mollicute Spiroplasma melliferum. SpV4 exhibits several similarities to the Chlamydia phage, Chp1, and the Coliphages α3, φK, G4 and φX174. All of these viruses are members of the Microviridae. These viruses have isometric capsids with T = 1 icosahedral symmetry, cause lytic infections and are the only icosahedral phages that contain single-stranded circular DNA genomes. The aim of this comparative study on these phages was to understand the role of their capsid proteins during host receptor recognition.Results: The three-dimensional structure of SpV4 was determined to 27 å resolution from images of frozen-hydrated particles. Cryo-electron microscopy (cryo-EM) revealed 20, ∼54 å long, ‘mushroom-like’ protrusions on the surface of the capsid. Each protrusion comprises a trimeric structure that extends radially along the threefold icosahedral axes of the capsid. A 71 amino acid portion of VP1 (the SpV4 capsid protein) was shown, by structural alignment with the atomic structure of the F capsid protein of φX174, to represent an insertion sequence between the E and F strands of the eight-stranded antiparallel β-barrel. Secondary structure prediction of this insertion sequence provided the basis for a probable structural motif, consisting of a six-stranded antiparallel β sheet connected by small turns. Three such motifs form the rigid stable trimeric structures (mushroom-like protrusions) at the threefold axes, with hydrophobic depressions at their distal surface.Conclusions: Sequence alignment and structural analysis indicate that distinct genera of the Microviridae might have evolved from a common primordial ancestor, with capsid surface variations, such as the SpV4 protrusions, resulting from gene fusion events that have enabled diverse host ranges. The hydrophobic nature of the cavity at the distal surface of the SpV4 protrusions suggests that this region may function as the receptor-recognition site during host infection
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