scholarly journals Distribution of photosystems 1 and 2 in the chloroplast lamellar structure

1972 ◽  
Vol 128 (1) ◽  
pp. 33P-33P
Author(s):  
P V Sane
Keyword(s):  
Lamellar Structure ◽  
Photosystems 1 And 2

EFFECTS OF UNTWINNING AND {1012} TWIN LAMELLAR STRUCTURE ON THE MECHANICAL PROPERTIES OF Mg ALLOY

2013 ◽  
Vol 49 (3) ◽  
pp. 291 ◽  
Author(s):  
Chao LOU ◽  
Xiyan ZHANG ◽  
Runhong WANG ◽  
Gaolin DUAN ◽  
Qing LIU
Keyword(s):  
Mechanical Properties ◽  
Lamellar Structure ◽  
Mg Alloy

Melting and Crystallization of Poly(oxyethylene) Mixtures

1995 ◽  
Vol 60 (11) ◽  
pp. 1855-1868 ◽  
Author(s):  
Ivo Lapeš ◽  
Josef Baldrian ◽  
Ján Biroš ◽  
Julius Pouchlý ◽  
Hanes Mio
Keyword(s):  
Melting Point ◽  
Lamellar Structure ◽  
Composition Dependence ◽  
Eutectic Phase ◽  
Eutectic Melting ◽  
Pure Polymer ◽  
X Ray ◽  
Long Period ◽  
Solid Liquid ◽  
Melting And Crystallization

Solid-liquid eutectic phase diagrams of mixtures of poly(oxyethylene) (M.w. 2 000) with hydroxy and methoxy endgroups, crystallizing in extended-chain macroconformation only, with glutaric acid, benzoic acid or 1,2-diphenylethane are given. The composition dependence of the melting temperature can be fitted by the Flory-Huggins equation. Interaction parameters X and interaction energy densities B evaluated from the diluent branch of the phase diagram are consistent with those obtained from the polymer branch provided the calorimetric value of enthalpy of polymer fusion is used in the latter computation. Measurements of small- and wide-angle X-ray scatterings showed a stacked lamellar structure of POE. Below the eutectic melting point, the long period of the polymer is almost independent of the diluent concentration. On raising temperature gradually from this melting point to the melting point of pure polymer, the increasing long period indicates the penetration of the diluent between the lamellae. As follows from SAXS measurements, the crystallinity of poly(oxyethylene) in the mixtures remains unchanged compared to that of the pure polymer.

scholarly journals Gold nanoparticles grafted with chemically incompatible ligands

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9568-9571
Author(s):  
Joanna M. Wolska ◽  
Aleksandra Błażejewska ◽  
Martyna Tupikowska ◽  
Damian Pociecha ◽  
Ewa Górecka
Keyword(s):  
Gold Nanoparticles ◽  
Lamellar Structure

A Janus-type lamellar structure is formed from gold nanoparticles grafted with chemically incompatible mesogenic ligands. Metallic NP-rich sublayers are separated by ligand-rich sublayers of various composition due to the ligand segregation.

Influence of Mineralogical Origin of Limestone Powder on the Performance of Complex Binder Material

2011 ◽  
Vol 477 ◽  
pp. 136-141
Author(s):  
Qin Wang ◽  
Jia Long Chen ◽  
Chang Cheng Zhang ◽  
Wei Niu
Keyword(s):  
Crystal Structure ◽  
Clay Mineral ◽  
Lamellar Structure ◽  
Perfect Crystal ◽  
Limestone Powder ◽  
Elemental Component ◽  
Binder Material ◽  
Complex Binder ◽  
Main Components ◽  
Perfect Crystal Structure

The effect of mineralogical origin, elemental component, crystal structure of three types of limestone powder on the fluidity of cement-limestone paste and mortar was investigated. The results show that the limestone powder originated from the mine of limestone and river pebble have better water-reducing effect, which is closely correlated with the main components of Calcite and Dolomite. These two mineral have relatively regular, orderly and perfect crystal structure with few defects and unfilled pores which are liable to adsorb more water and water-reducing agents. On the contrary, the limestone powder derived from the mine of sandstone has nearly no water-reducing effect which is ascribed to the large amount of clay mineral which exhibit lamellar structure leading to the large quantity of consumption of water.

Double Ordered Layers within Microphase-separated Lamellar Structure of Double Liquid Crystalline Side-chain Type Block Copolymer

2008 ◽  
Vol 37 (11) ◽  
pp. 1174-1175 ◽  
Author(s):  
Rina Maeda ◽  
Teruaki Hayakawa ◽  
Masatoshi Tokita ◽  
Masa-aki Kakimoto ◽  
Hiroaki Urushibata
Keyword(s):  
Block Copolymer ◽  
Lamellar Structure ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Chain Type ◽  
Ordered Layers

Preparation and Properties of the Organic-Inorganic Composite Coating on Aluminum Alloy

2011 ◽  
Vol 675-677 ◽  
pp. 1197-1200
Author(s):  
Guo Jun Li ◽  
Xue Jun Cui ◽  
Rui Ming Ren
Keyword(s):  
Aluminum Alloy ◽  
Composite Coating ◽  
Lamellar Structure ◽  
Impact Resistance ◽  
Weight Ratio ◽  
Silica Sol ◽  
Nano Tio2 ◽  
Optimum Range ◽  
Acid Catalyzed ◽  
Inorganic Composite

The organic-inorganic hybrid sol was prepared using an alkaline silica sol modified by acid-catalyzed hydrolytic polycondensation of methyltrimethoxysilane (MTMS) in a water-bath condition of 60oC, and then the water-based primer and topcoat were prepared through adding the pigments and nano-TiO2 suspension respectively. Through spraying and baking, the organicinorganic composite coating on the treated aluminum alloy was obtained. The optimum range of P/B (weight ratio of the pigment/binder) is determined between 1:1 and 1.5:1 by investigating the influence of the P/B of the primer on the adhesion and impact resistance of the coating. The microstructure of the coating was characterized by optical microscopy and scanning electron microscopy. The results show that there are lots of holes and lamellar structure in the primer coating and the obtained topcoat coating is uniform, smooth and dense. The coating of ~30 μm in thickness is mainly composed of three elements of silicon, aluminum and titanium, in which transition layer of ~10 μm is included. The physicochemical properties suggest that the coatings on aluminum alloy can meet the needs of finishing coating very well.

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