To utilize the excellent properties of silica (SiO2) glass for a laser host, neodymium-aluminum (Nd–Al) and neodymium-phosphorous (Nd–P) co-doped SiO2 glasses were studied. They prepared by plasma-torch chemical vapor deposition (CVD). It was found that doping level less than ten times number Nd Al co-dopant about fifteen P enough to remove undesirable fluorescence Nd-doped make them suitable application. The clustering ions disperse well in matrix lasing increases. effects dopant on density...

It is widely accepted that dorsal striatum neurons participate in either the direct pathway (expressing dopamine D1 receptors) or indirect D2 receptors), controlling voluntary movements an antagonistically balancing manner. The D1- and D2-expressing are activated inactivated, respectively, by released from substantia nigra encoding reward expectation. However, little known about functional representation of motor information its modulation individual striatal constituting two pathways. In...

Abstract The heats of sublimation a series condensed polynuclear aromatic hydrocarbons, 1rom anthracene (C14) to violanthrene (C34), were measured. It has been found that there is an additivity in the inner among these compounds, i. e., as number carbon atoms each molecule increases by one, heat 1.51 kcal./mole.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIn situ emission levels of carcinogenic and mutagenic compounds from diesel gasoline engine vehicles on an expresswayTakashi. Handa, Tsuneyuki. Yamauchi, Kazuhiro. Sawai, Takaki. Yamamura, Yoshihiro. Koseki, Tadahiro. IshiiCite this: Environ. Sci. Technol. 1984, 18, 12, 895–902Publication Date (Print):December 1, 1984Publication History Published online1 May 2002Published inissue 1 December...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Molecular Weight on Excimer Formation Polystyrenes in SolutionTadahiro Ishii, Takashi Handa, and Satoru MatsunagaCite this: Macromolecules 1978, 11, 1, 40–46Publication Date (Print):January 1978Publication History Published online1 May 2002Published inissue 1 January 1978https://pubs.acs.org/doi/10.1021/ma60061a008https://doi.org/10.1021/ma60061a008research-articleACS PublicationsRequest reuse permissionsArticle...

Cerium‐activated silica (SiO 2 ) glasses were prepared by plasma torch chemical vapor deposition (CVD). In Ce‐doped SiO glasses, most Ce exists as 4+ ions; the remaining small amount of 3+ ions exhibits a broad fluorescence spectrum with large Stokes shift, ∼9600 cm ‐1 , from excitation peak 324 nm. Aluminum and phosphorus codoping considerably increases ratio shifts peaks both spectra to shorter wavelengths. P is more effective way achieve this result in some cases produces an absorption...

A DNA fragment possessing ORF12 of TL-DNA Ri(A4) plasmids (Slightom et al. 1986) was inserted into the genome Nicotiana tabacum cv. Petite Havana SR1, through binary vector system harbored by Agrobacterium tumefaciens. The transformed plants showed dwarfness in plant height and corolla length. Adventitious roots were not induced from leaf disks A. tumefaciens ORF12.

Stems of genus Dendrobium (Orchidaceae) have been traditionally used as an herbal medicine (Dendrobii Herba) in Eastern Asia. Although demand for is increasing rapidly, wild resources are decreasing due to over-collection. This study aimed identify plant sources Dendrobii Herba on the market based sequences internal transcribed spacer (ITS) regions nuclear ribosomal DNA. We constructed ITS1-5.8S-ITS2 sequence database 196 species, and was employed 21 samples. found that 13 species (D....

Phylogenetic relationships within Clematis, including Naravelia, Archiclematis and Clematopsis, were analysed using nucleotide sequences of chloroplast DNA [(1) matK trnK introns; (2) atpB–rbcL spacer; (3) rpoB–trnC (4) psbA–trnH–trnQ (5) rbcL–accD spacer] the nuclear ITS regions. The phylogenetic trees resulting from these analyses suggested nine major clades. genera Archiclematis, Naravelia Clematopsis found to be nested genus should included it. Within traditional subgenus Viorna was...

Transgenic tobacco plants possessing a chimeric gene of the promoter region Ri plasmid ORF12 (rolC) and structural bacterial β-glucuronidase were obtained. Histochemical analysis showed that is expressed in phloem cells throughout whole plants. Stable inheritance such cell specific expression was also confirmed.

The large subunits (LS) and small (SS) of Fraction I protein from 57 species cultivars the genus Citrus, Fortunella Poncirus were compared to analyze phylogenetic relationships among them. C. medica only had different LS. P. trifoliata reticulata unique SS respectively. species, hystrix, latipes, limon grandis also other SS. We consider that are original cultivated citrus along with presumably. Thus we show our ideas Citrus its relatives based on their soelectrofocusing pattern protein.

Abstract The basicity of the condensed polynuclear aromatic hydrocarbons and their related quinones with higher molecular weight have been measured after method L. P. Hammett J. Dyrup, it is approximately estimated in terms pKB. In dibenzopyrene molecule two values pKB found. larger seems to correspond that smaller molecules such as hexamethylbenzene, tetracene. one be equivalent ovalene, anthanthrene etc. approximately, which value unable found, owing unstability or low-solubility them...

Abstract The application of amplified fragment length polymorphism (AFLP), sequence tagged microsatellite site (STMS) and expressed tag (EST) markers to study the genetic relationships in an evergreen azalea gene pool was investigated. STMS EST revealed a higher distance detection capacity than AFLPs, which, nevertheless, were most efficient marker system due their highest capacity. Similarity matrices showed weak, yet significant, correlations when Mantel's test applied. To assess...

It is always difficult to construct coherent classification systems for plant lineages having diverse morphological characters. The genus Dendrobium, one of the largest genera in Orchidaceae, includes ∼1100 species, and enormous diversification has hindered establishment consistent covering all major groups this genus. Given particular importance species Dendrobium section allied as floriculture crude drug genetic resources, there an urgent need establish a stable system. To clarify...

Multiphoton imaging of genetically encoded calcium indicators is routinely used to report activity from populations spatially resolved neurons in vivo. However, since the relationship between fluorescence and action potentials (APs) nonlinear varies over neurons, quantitatively inferring AP discharge problematic. To address this we developed a biophysical model binding kinetics for indicator GCaMP6s that accurately describes AP-evoked changes The model's physical interpretation allowed same...

✓ The pressure in 47 arteries feeding 21 arteriovenous malformations (AVM's) was investigated during transarterial embolization using a Tracker-18 microcatheter. On average, systolic increased by 22 mm Hg. In AVM's with single or few feeders, usually achieved well; contrast, giant multiple feeders and large shunt were poorly embolized. However, well-demarcated components may be reduced to an appropriate size for surgery stereotactic radiation therapy. It found that the artery significantly...

Abstract The mechanism of excimer formation and deactivation for isotactic atactic polystyrenes, poly( p ‐methylstyrenes) was studied by comparison the rate parameters which were calculated from fluorescence quenching decay time measurements emission band. activation energy obtained effect temperature change on intensity. polymers are in order 10 9 s −1 larger than those polymers. is smaller that These results show can form more easily facility interpreted as lower barrier required to...