نتایج جستجو برای: seed formation

تعداد نتایج: 600619  

2002
P. D. Spagnol

PbMg1/3Nb2/3O3 (PMN) powder was prepared by citrate organic solution, and barium titanate (BT) seed particles were added to encourage the perovskite phase formation. Sintering was followed using the constant heating rate mode of a dilatometer, and it was observed that the seed concentration affected the PMN shrinkage rate and crystal structure. The study of the lattice parameters of the samples...

2010
Mitsuhiro Numata Yoshihiro Koide

Two dimensional island arrays and honeycomb patterns consisting of ZnO nanocrystal clusters were fabricated on predefined TiO(2) seed patterns prepared by vacuum free, aerosol assisted wet-chemical synthesis. The TiO(2) seed patterns were prepared by applying an aerosol of a water soluble titanium complex on hexagonally close-packed polystyrene bead arrays for different lengths of time. Scannin...

Journal: :Chemical communications 2013
Gabriela Marinescu Sylvie Ferlay Nathalie Kyritsakas Mir Wais Hosseini

The in situ combination of M(II) cations (Co, Ni, Cu or Zn) with 2,4,6-pyridinetricarboxylic acid as a ligand, a bisamidinium dication as a H-bond donor tecton and NaOH leads to the formation of anionic metal complexes ML2(2-) and their interconnection into isomorphous 3D H-bonded networks displaying different colours which were used as preformed seed crystals for the formation of crystals of c...

2001
Tapan K. Sau Anjali Pal N. R. Jana Z. L. Wang Tarasankar Pal

Gold nanoparticles having prechosen size ranging from 5 to 110 nm have been prepared in two steps. Firstly, small spherical particles (seed) of average diameters between 5 and 20 nm were prepared by varying the ratio of gold ion concentration to stabilizer/reductant, TX-100 concentration and using UV irradiation. Secondly, 20–110 nm particles were formed by a non-iterative seed-mediated growth ...

Journal: :Plant physiology 1983
T M Ching C J Poklemba R J Metzger

Seven lines of triticale (X Triticosecale Wittmack) with either shriveled or plump seed characteristics were planted in the field, and seed developmental changes in weight, starch content, the activity of starch biosynthetic and degradative enzymes, and ATP content were studied in three consecutive years in Oregon. Experimental results varied among genotypes and with growing environment, but ov...

Journal: :Clinical science and molecular medicine 1975
J L Meyer J H Bergert L H Smith

Chemical kinetic data, complemented with scanning electron-microscope observations of the crystalline phase, show that seed crystals of hydroxyapatite have the ability to induce the growth of calcium oxalate monohydrate crystals epitaxially from a metastable supersaturated solution of calcium oxalate. The rate of growth of calcium oxalate crystals is dependent on the surface area of the seed ma...

Journal: :Plant physiology 2012
Ying-Tao Zhao Meng Wang San-Xiong Fu Wei-Cai Yang Cun-Kou Qi Xiu-Jie Wang

MicroRNAs (miRNAs) and small interfering RNAs are important regulators of plant development and seed formation, yet their population and abundance in the oil crop Brassica napus are still not well understood, especially at different developmental stages and among cultivars with varied seed oil contents. Here, we systematically analyzed the small RNA expression profiles of Brassica napus seeds a...

Journal: :The Journal of biological chemistry 1965
A MARCUS J FEELEY

Ribosomes prepared from dry wheat embryos or peanut cotyledons show little or no capacity to incorporate 14C-amino acids into protein. In contrast, preparations from imbibed embryos or cotyledons are active (1). In the presence of polyuridylic acid, the ribosome system of dry seed is as active as that from imbibed seed in catalyzing 14C-phenylalanine incorporation (1). These results suggested t...

Journal: :Molecules 2011
Sathaporn Ngamukote Kittana Mäkynen Thavaree Thilawech Sirichai Adisakwattana

The major polyphenols in grape seed have been shown to have beneficial health effects in the prevention of dyslipidemia and cardiovascular diseases. In this present study, we investigated the cholesterol-lowering activity of three major polyphenolic compounds found in grape seed. The results showed that gallic acid, catechin, and epicatechin significantly inhibited pancreatic cholesterol estera...

2016
Julia Kitzmann Alexander Göritz Mirko Fraschke Mindaugas Lukosius Christian Wenger Andre Wolff Grzegorz Lupina

We investigate the use of perfluorodecyltrichlorosilane-based self-assembled monolayer as seeding layer for chemical vapour deposition of HfO2 on large area CVD graphene. The deposition and evolution of the FDTS-based seed layer is investigated by X-ray photoelectron spectroscopy, Auger electron spectroscopy, and transmission electron microscopy. Crystalline quality of graphene transferred from...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید