Seasonal variations of growth in the red alga Chondrus crispus on the Atlantic French coasts. I. A new approach by fluorescence labelling

1987 ◽  
Vol 65 (5) ◽  
pp. 1014-1018 ◽  
Author(s):  
Thierry Chopin ◽  
Jean-Yves Floc'h
Keyword(s):  
Cell Wall ◽  
Seasonal Variations ◽  
Red Alga ◽  
In Situ Growth ◽  
Chondrus Crispus ◽  
Fluorescent Cell ◽  
New Approach ◽  
Fluorescence Labelling

The seasonal variations of growth in Chondrus crispus Stackhouse were studied by using a vital, fluorescent, cell-wall stain called Cellufluor. In situ growth is not only apical but is extended at least to the upper half of the thallus; it is slow at the beginning of spring, increases towards the end, slows down at the beginning of summer, and increases again to reach a maximum in autumn. It is minimal during winter. The same pattern of growth occurs for the two dissimilar studied forms of the alga, although the rate is greater in the infralittoral than in the midlittoral form.

DNA-templated in situ growth of AgNPs on SWNTs: a new approach for highly sensitive SERS assay of microRNA

2015 ◽  
Vol 51 (30) ◽  
pp. 6552-6555 ◽  
Author(s):  
Jing Zheng ◽  
Junhui Bai ◽  
Qifeng Zhou ◽  
Jishan Li ◽  
Yinhui Li ◽  
...  
Keyword(s):  
In Situ Growth ◽  
Hybrid Nanocomposite ◽  
New Approach ◽  
Microrna Detection ◽  
Highly Sensitive

The SWNT@AgNPs hybrid nanocomposite was employed to achieve microRNA detection.

In situ Measurements of Cell Wall Components in the Red Alga Solieria chordalis (Solieriaceae, Rhodophyta) by FTIR Microspectrometry

1997 ◽  
Vol 40 (1-6) ◽  
Author(s):  
I. Fourneta ◽  
E. Ar Gall ◽  
E. Deslandes ◽  
J.-P. Huvenne ◽  
B. Sombret ◽  
...  
Keyword(s):  
Cell Wall ◽  
Red Alga ◽  
In Situ Measurements ◽  
Cell Wall Components ◽  
Wall Components

scholarly journals Research on functional boards and plastic films based on animal skin and hydroxyapatite

2021 ◽  
Author(s):  
Jiaxing Zhang ◽  
Zhijun Chen ◽  
Zhongzhen Long ◽  
Zhihua Shan
Keyword(s):  
Water Resistance ◽  
Three Dimensional ◽  
Plastic Film ◽  
In Situ Growth ◽  
Collagen Network ◽  
New Approach ◽  
Plastic Films ◽  
Calcium And Phosphorus ◽  
Animal Skin

Abstract Nano-Hydroxyapatite precursors with calcium and phosphorus salts (Ca/P = 1.67) were introduced into a three-dimensional collagen network matrix (3DCM) based on goat skin pretreated with glutaraldehyde for in situ growth, and a functional HAG-3DCM board was obtained. After plasticity compression, a transparent protein plastic film was formed. Response surface methodology based on plasticity pressure conditions was used, and the strength, hardness and water resistance of the HAG-3DCM plastic film was significantly improved. This study demonstrates a new approach for the preparation of animal skin materials with new application value.

In vitro and in vivo polysaccharides assembly: ultrastructural and cytochemical study of growing plant cell wall components.

1978 ◽  
Vol 36 (2) ◽  
pp. 434-435
Author(s):  
D. Reis ◽  
B. Vian ◽  
J. C. Roland
Keyword(s):  
Cell Wall ◽  
Self Assembly ◽  
Plant Cell Wall ◽  
Higher Plants ◽  
Three Dimensional ◽  
Cytochemical Study ◽  
Wall Components

Wall morphogenesis in higher plants is a problem still open to controversy. Until now the possibility of a transmembrane control and the involvement of microtubules were mostly envisaged. Self-assembly processes have been observed in the case of walls of Chlamydomonas and bacteria. Spontaneous gelling interactions between xanthan and galactomannan from Ceratonia have been analyzed very recently. The present work provides indications that some processes of spontaneous aggregation could occur in higher plants during the formation and expansion of cell wall.Observations were performed on hypocotyl of mung bean (Phaseolus aureus) for which growth characteristics and wall composition have been previously defined.In situ, the walls of actively growing cells (primary walls) show an ordered three-dimensional organization (fig. 1). The wall is typically polylamellate with multifibrillar layers alternately transverse and longitudinal. Between these layers intermediate strata exist in which the orientation of microfibrils progressively rotates. Thus a progressive change in the morphogenetic activity occurs.

Epitaxial growth manner and structure of superconducting oxide films

1990 ◽  
Vol 48 (4) ◽  
pp. 2-3
Author(s):  
Yoshichika Bando ◽  
Takahito Terashima ◽  
Kenji Iijima ◽  
Kazunuki Yamamoto ◽  
Kazuto Hirata ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Film Surface ◽  
High Energy ◽  
Epitaxial Films ◽  
Layer By Layer ◽  
Initial Growth ◽  
In Situ Growth ◽  
High Quality ◽  
Activated Reactive Evaporation

The high quality thin films of high-Tc superconducting oxide are necessary for elucidating the superconducting mechanism and for device application. The recent trend in the preparation of high-Tc films has been toward “in-situ” growth of the superconducting phase at relatively low temperatures. The purpose of “in-situ” growth is to attain surface smoothness suitable for fabricating film devices but also to obtain high quality film. We present the investigation on the initial growth manner of YBCO by in-situ reflective high energy electron diffraction (RHEED) technique and on the structural and superconducting properties of the resulting ultrathin films below 100Å. The epitaxial films have been grown on (100) plane of MgO and SrTiO, heated below 650°C by activated reactive evaporation. The in-situ RHEED observation and the intensity measurement was carried out during deposition of YBCO on the substrate at 650°C. The deposition rate was 0.8Å/s. Fig. 1 shows the RHEED patterns at every stage of deposition of YBCO on MgO(100). All the patterns exhibit the sharp streaks, indicating that the film surface is atomically smooth and the growth manner is layer-by-layer.

In situ growth of SrTiO3 thin films prepared by AACVD from strontium and titanium oxide bisdipivaloylmethanates

1997 ◽  
Vol 101-103 (1-2) ◽  
pp. 183-190 ◽  
Author(s):  
J Peña
Keyword(s):  
Thin Films ◽  
Titanium Oxide ◽  
In Situ Growth

In-situ growth of cerium nanoparticles for chrome-free, corrosion resistant anodic coatings

2021 ◽  
Vol 410 ◽  
pp. 126958
Author(s):  
Linnea Selegård ◽  
Thirza Poot ◽  
Peter Eriksson ◽  
Justinas Palisaitis ◽  
Per O.Å. Persson ◽  
...  
Keyword(s):  
In Situ Growth ◽  
Corrosion Resistant

scholarly journals Neuroimmune Response Mediated by Cytokines in Natural Scrapie after Chronic Dexamethasone Treatment

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 204
Author(s):  
Isabel M. Guijarro ◽  
Moisés Garcés ◽  
Pol Andrés-Benito ◽  
Belén Marín ◽  
Alicia Otero ◽  
...  
Keyword(s):  
Prion Diseases ◽  
Global Approach ◽  
Profile Data ◽  
Dexamethasone Treatment ◽  
New Approach ◽  
Complex Interactions ◽  
Natural Scrapie ◽  
Anti Inflammatory

The actual role of prion protein-induced glial activation and subsequent cytokine secretion during prion diseases is still incompletely understood. The overall aim of this study is to assess the effect of an anti-inflammatory treatment with dexamethasone on different cytokines released by neuroglial cells that are potentially related to neuroinflammation in natural scrapie. This study emphasizes the complex interactions existent among several pleiotropic neuromodulator peptides and provides a global approach to clarify neuroinflammatory processes in prion diseases. Additionally, an impairment of communication between microglial and astroglial populations mediated by cytokines, mainly IL-1, is suggested. The main novelty of this study is that it is the first one assessing in situ neuroinflammatory activity in relation to chronic anti-inflammatory therapy, gaining relevance because it is based on a natural model. The cytokine profile data would suggest the activation of some neurotoxicity-associated route. Consequently, targeting such a pathway might be a new approach to modify the damaging effects of neuroinflammation.

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