The thermolysis of trans-1 -trimethylsiloxy- 1-vinylcyclotridec-
3-ene (VI-OTMS) led to the formation of two major products: 4-vinylcyclotridecanone
(VII) and cyclopentadec-5-en-l-one (VIII) after
hydrolysis. Ketone VII is produced by a concerted [3, 3] sigmatropic
shift, while ketone VIII is formed by a [1, 3] sigmatropic shift with
a concerted or diradical...
Alternative silvicultural systems, such as group
selections, have recently come into vogue in the U.S.
Pacific Northwest in response to political and public
pressure against traditional, even-aged silviculture. There
is also interest in silvicultural systems for multiple
resources. Little is known about planning logistics,
operational requirements, and harvest costs for...
Two seed sources of Douglas-fir (Pseudotsuga menziesii
(Mirb.) Franco) seedlings were grown under several environments
in controlled growth chambers and in a natural environment. All
seedlings were grown for six months and then harvested.
One purpose of this study was to observe environmental influences
on the anatomy of the needle....
Sediment transport measurements on Flynn Creek, a headwater stream in the Oregon Coast Range, have illustrated the magnitude of
fluvial transfer processes, primarily of the bedload component, during a moderate storm runoff season (1979 water year). The total dissolved solids concentration of storm runoff averaged 40 mg/L, and was independent...
We investigated the response of hyporheic exchange flow (HEF) to wood removal in a small, low-gradient, gravel bed stream in southeast Alaska using a series of groundwater models built to simulate HEF for the initial conditions immediately after wood removal and 1 month, 2 years, 4 years, and 16 years...
Molecular phylogenetic and chemical analyses, and morphological characterization of collections of North American Paraisaria specimens support the description of two new species and two new combinations for known species. P. cascadensis sp. nov. is a pathogen of Cyphoderris (Orthoptera) from the Pacific Northwest USA and P. pseudoheteropoda sp. nov. is...
Horizontal gene transfer (HGT) of DNA from the plastid to the nuclear and mitochondrial genomes of higher plants is a common
phenomenon; however, plastid genomes (plastomes) are highly conserved and have generally been regarded as impervious to HGT.
We sequenced the 158 kb plastome and the 690 kb mitochondrial genome...
Horizontal gene transfer (HGT) of DNA from the plastid to the nuclear and mitochondrial genomes of higher plants is a common
phenomenon; however, plastid genomes (plastomes) are highly conserved and have generally been regarded as impervious to HGT.
We sequenced the 158 kb plastome and the 690 kb mitochondrial genome...
Horizontal gene transfer (HGT) of DNA from the plastid to the nuclear and mitochondrial genomes of higher plants is a common
phenomenon; however, plastid genomes (plastomes) are highly conserved and have generally been regarded as impervious to HGT.
We sequenced the 158 kb plastome and the 690 kb mitochondrial genome...
Full Text:
(Apocynaceae)
Shannon C.K. Straub1,*, Richard C. Cronn2, Christopher Edwards1, Mark Fishbein3, and Aaron
