Search results for "Mite"

Myogenesis and contraction in the early embryonic heart of the rainbow trout

1977

Myogenesis in the embryonic heart of the rainbow trout, Salmo galrdneri (Rich.), was investigated electron microscopically from the 29th to the 41st somite stage. Thick and thin myofilaments are formed simultaneously as well as precursors of Z-lines, to which the thin filaments are attached. The genesis of filaments takes place in the region around the intracellular yolk droplets. The first myofibrils appear by the 33rd somite stage, probably formed by a mechanism of self-assembly in which the binding sites of actin and myosin participate. A- and I-bands do not develop before the 38th somite stage. The contraction already begins during the 33rd somite stage in the middle of the tubular hear…

NGO Legitimacy as a Continuous Negotiation Process : Fostering ‘Good Citizenship’ in Western Uganda

2022

The article draws on and contributes to debates on the legitimacy of non-governmental organizations (NGOs) engaged in development, defining organizational legitimacy as a social construct that is continually negotiated in relationships with diverse audiences. To explore the negotiated nature of NGO legitimacy, the article examines the efforts of a Ugandan NGO, Kabarole Research and Resource Centre (KRC), to foster citizens’ capacities in rural communities in the western part of the country. Drawing on interviews and participant observation, we scrutinize the ways in which KRC balances between different and even contrasting legitimacy expectations stemming from three types of encounters sign…

Thermal Parametric and Thermo-Mechanical analyses for the Limiter Blanket Module of ITER

1996

dsRNA-functionalized multifunctional gamma-Fe2O3 nanocrystals: a tool for targeting cell surface receptors.

2008

The Role of Productivity in Increasing Latvian Competitiveness

2018

Productivity is the main key factor for Latvia to increased prosperity, ensuring efficient use of resources. Due to limited availability of resources and the increasing competition in the global markets, it is important for Latvia to support its economic growth through increased productivity.

Expression analysis of jagged genes in zebrafish embryos

2005

The interaction of transmembrane Delta and Jagged/Serrate ligands with Notch receptors on neighboring cells is critically involved in cell specification during development. In zebrafish, the early expression of delta but not of jagged genes has been investigated in some detail. We have analyzed the sequence and embryonic expression pattern of the three zebrafish genes jagged1a, jagged1b, and jagged2. These genes, whose transcripts are detectable by in situ hybridization from early somitogenesis, are widely and dynamically expressed in embryos. Coexpression is limited, however, to the notochord and lens (jagged1a and jagged1b) and to the otic vesicle and pronephros (jagged1b and jagged2). Co…

Scaling guidelines of a soliton-based power limiter for 2R-optical regeneration applications

2010

International audience; In this work, we report scaling rules for the design of an all-fibered soliton-based power limiter for reamplification and reshaping (2R) regeneration process. In particular, we propose general guidelines to fix the optimum fiber length and initial power of the regenerator. We quantitatively point out the optical power limiting effect of the device enabling a significant reduction of the amplitude jitter of a degraded signal. Influence of the initial level of amplitude jitter is discussed and the results are compared with a self-phase modulation-based configuration working in the normal dispersion regime. Realistic numerical simulations in the context of 160 Gbit/s s…

Nuclear Analysis of an ITER Blanket Module

2013

ITER blanket system is the reactor’s plasma-facing component, it is mainly devoted to provide the thermal and nuclear shielding of the Vacuum Vessel and external ITER components, being intended also to act as plasma limiter. It consists of 440 individual modules which are located in the inboard, upper and outboard regions of the reactor. In this paper attention has been focused on to a single outboard blanket module located in the equatorial zone, whose nuclear response under irradiation has been investigated following a numerical approach based on the Monte Carlo method and adopting the MCNP5 code. The main features of this blanket module nuclear behaviour have been determined, paying part…

Measuring the isotope effect on the gross beryllium erosion in JET

2022

Abstract The isotope effect, hydrogen (H) versus deuterium (D), on the gross beryllium (Be) erosion yield has been measured in ohmic limiter plasmas in JET tokamak by spectroscopic means. A simplified method to extract the effective sputtering yield from the quotient of the radiances of the D α or D γ and the Be II lines at 527 nm was applied. A clear isotope effect has been found, the erosion yield of D being about a factor of 2 larger compared to H in the whole explored plasma density range. This is in agreement with physical sputtering data obtained with H+ and D+ ion beams and also with material surface computer simulations. The already published contribution of chemically assisted phys…

Hermite interpolation: The barycentric approach

1991

The barycentric formulas for polynomial and rational Hermite interpolation are derived; an efficient algorithm for the computation of these interpolants is developed. Some new interpolation principles based on rational interpolation are discussed.