scholarly journals The Cambium and Its Derivative Tissues: No. IX. Structural Variability in the Redwood, Sequoia sempervirens, and Its Significance in the Identification of Fossil Woods

1934 ◽  
Vol 15 (3) ◽  
pp. 233-254 ◽  
Author(s):  
Irving W. Bailey ◽  
Anna F Faull
Keyword(s):  
Sequoia Sempervirens ◽  
Structural Variability

Structural variability and thermally-induced mesomorphisms in complexes of copper(II) with 4-halobenzoates, 2,2'-bipyridine and 4,4'-bis(dodecyl)-2,2'-bipyridine

2021 ◽  
pp. 1-18
Author(s):  
Norbani Abdullah ◽  
Lailatun N. Ozair ◽  
Habibah Samsudin ◽  
Graham J. Tizzard ◽  
Simon J. Coles ◽  
...  
Keyword(s):  
Thermally Induced ◽  
Structural Variability

scholarly journals Aboveground biomass dynamics and growth efficiency of Sequoia sempervirens forests

2020 ◽  
Vol 458 ◽  
pp. 117740 ◽  
Author(s):  
Stephen C. Sillett ◽  
Robert Van Pelt ◽  
Allyson L. Carroll ◽  
Jim Campbell-Spickler ◽  
Marie E. Antoine
Keyword(s):  
Aboveground Biomass ◽  
Growth Efficiency ◽  
Sequoia Sempervirens ◽  
Biomass Dynamics

Rationalizing the Structural Variability of the Exocyclic Amino Groups in Nucleobases and Their Metal Complexes: Cytosine and Adenine

2014 ◽  
Vol 20 (31) ◽  
pp. 9494-9499 ◽  
Author(s):  
Célia Fonseca Guerra ◽  
Pablo J. Sanz Miguel ◽  
Andrea Cebollada ◽  
F. Matthias Bickelhaupt ◽  
Bernhard Lippert
Keyword(s):  
Metal Complexes ◽  
Amino Groups ◽  
Structural Variability

Structural diversity of salts of terpyridine derivatives with europium(III) located in both, cation and anion, in comparison to molecular complexes

2020 ◽  
Vol 235 (8-9) ◽  
pp. 353-363
Author(s):  
Alexander E. Sedykh ◽  
Robin Bissert ◽  
Dirk G. Kurth ◽  
Klaus Müller-Buschbaum
Keyword(s):  
Thermal Properties ◽  
Crystal Packing ◽  
Side Reaction ◽  
Molecular Complexes ◽  
Structural Diversity ◽  
Organic Ligands ◽  
Ionic Complexes ◽  
Structural Variability ◽  
Dimeric Complexes ◽  
The Common

AbstractThree salts of the common composition [EuCl2(X-tpy)2][EuCl4(X-tpy)]·nMeCN were obtained from EuCl3·6H2O and the respective organic ligands (X-tpy = 4′-phenyl-2,2′:6′,2″-terpyridine ptpy, 4′-(pyridin-4-yl)-2,2′:6′,2″-terpyridine 4-pytpy, and 4′-(pyridin-3-yl)-2,2′:6′,2″-terpyridine 3-pytpy). These ionic complexes are examples of salts, in which both cation and anion contain Eu3+ with the same organic ligands and chlorine atoms coordinated. As side reaction, acetonitrile transforms into acetamide resulting in the crystallization of the complex [EuCl3(ptpy)(acetamide)] (4). Salts [EuCl2(ptpy)2][EuCl4(ptpy)]·2.34MeCN (1), [EuCl2(4-pytpy)2][EuCl4(4-pytpy)]·0.11MeCN (2), and [EuCl2(3-pytpy)2][EuCl4(3-pytpy)]·MeCN (3) crystallize in different structures (varying in space group and crystal packing) due to variation of the rear atom of the ligand to a coordinative site. Additionally, we show and compare structural variability through the dimeric complexes [Eu2Cl6(ptpy)2(N,N′-spacer)]·N,N′-spacer (5, 6, 7) obtained from [EuCl3(ptpy)(py)] by exchanging the end-on ligand pyridine with several bipyridines (4,4′-bipyridine bipy, 1,2-bis(4-pyridyl)ethane bpa, and 1,2-bis(2-pyridyl)ethylene bpe). In addition, photophysical (photoluminescence) and thermal properties are presented.

Density Functional Theory and X-ray Analysis of the Structural Variability in η5,η5,η1-Tris(ring) Rare Earth/Actinide Tetramethylpyrrolyl Complexes, (C5Me5)2M(NC4Me4)

2012 ◽  
Vol 52 (7) ◽  
pp. 3565-3572 ◽  
Author(s):  
Christopher L. Webster ◽  
Jefferson E. Bates ◽  
Ming Fang ◽  
Joseph W. Ziller ◽  
Filipp Furche ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Rare Earth ◽  
Density Functional ◽  
Functional Theory ◽  
X Ray ◽  
Structural Variability

scholarly journals VEGETATIVE RESCUE AND ROOTING OF CUTTINGS OF DIFFERENT STOCK PLANTS OF Sequoia sempervirens

CERNE ◽  
2017 ◽  
Vol 23 (4) ◽  
pp. 435-444 ◽  
Author(s):  
Mariane de Oliveira Pereira ◽  
Alessandro Camargo Ângelo ◽  
Marcio Carlos Navroski ◽  
Mario Dobner Júnior ◽  
Luciana Magda de Oliveira
Keyword(s):  
Genetic Effect ◽  
Sequoia Sempervirens ◽  
Stem Cuttings ◽  
Fast Growing ◽  
Rooting Of Cuttings ◽  
Living Species ◽  
Recovered Material ◽  
Over 40 Years ◽  
Number Of Shoots

ABSTRACT Sequoia is a fast-growing, long-living species, producing durable timber. The aim of this study was to test different methods for the vegetative rescue of Sequoia sempervirens trees over 40 years old, made at different periods of the year, and, later, testing the rooting of individualized cuttings in planned arrays. Twenty-four individual sequoias were rescued, applying girdling and semi-girdling at three different heights (-10, 0, and 30 cm). The first collection was made 90 days after application of the treatments, being repeated at 150, 240, and 360 days. The percentage of budding trees and the number of shoots per array were registered. In all collections, shoots produced cuttings, which were placed for rooting in mini-tunnels. Cutting survival (%), rooting (%), and number of roots were registered, per array, and per collection. The species vegetative rescue proved to be efficient for the production of shoots for stem cuttings, especially with girdling at 30 cm and semi-girdling at -10 cm. However, it is difficult to define the best method, mainly because of the genetic effect among stock plants. The rooting of cuttings, of recovered material, presented good results (average >65%), also with great differences among stock plants. The potential for rooting of cuttings varied according to different planting periods, with high rooting rates in all seasons, especially in summer. Sequoia sempervirens shows the potential for vegetative rescue and cloning by rooting of cuttings, and this may lead to new studies, with a view towards fixing clones.

Betalomonosovite: chemical and structural variability and genesis

2018 ◽  
Vol 30 (2) ◽  
pp. 289-304 ◽  
Author(s):  
Inna S. Lykova ◽  
Nikita V. Chukanov ◽  
Igor V. Pekov ◽  
Vasiliy O. Yapaskurt ◽  
Gerald Giester
Keyword(s):  
Structural Variability
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