8,113 research outputs found
Fern Adiantum capillus-veneris phytochrome 1 comprises two native photochemical types similar to seed plant phytochrome A
No full textPhytochrome (phy) in etiolated seedlings of wild-type (WT) Arabidopsis (Ler) and its transgenic lines (TL) L15 and L20 transformed with Adiantum capillus-veneris PHY1 cDNA (Okamoto et al., 1997) was investigated using low-temperature (85 K) fluorescence spectroscopy and photochemistry. It was found that while WT seed germination requires stimulation by light, the TL germinated equally well with or without pre-illumination. Phytochrome content [Ptot] was 2-fold higher in TL whereas the level of Pr ? lumi-R phototransformation at 85 K (?1) was similar between WT (0.25) and TL (0.27). When seeds germinated with pre-illumination, the proportion of the photochemical types Pr? active and Pr? inactive at 85 K was 50/50 in WT and 54/46 in TL, respectively. Dark-germinated TL had a ?1 value of 0.16 and the proportion of Pr? and Pr? was 32/68, respectively, without changes in [Ptot]. Evaluations based on these data revealed that phy1 has Pr? and Pr?, designated phy1? and phy1?, akin to phyA, which comprises both Pr photochemical types (phyA? and phyA?), and in contrast to phyB that possesses only Pr?. The proportion of phy1? and phy1? depends on pre-illumination for induction of germination. The pigment most likely accumulated in the seeds and was active in promoting Arabidopsis seed germinatio
Eumantispa Okamoto
No full textGenus Eumantispa Okamoto Eumantispa Okamoto, 1910. Type species: Mаntispа suzukii Okamoto, 1910 (as " Mаntispа suzukii Mats. [sic]") (= Mаntispа hаrmаndi Navás, 1909 [" 1908–1909 "]), by original designation. Stenispа Navás, 1914a. Type species: Eumаntispа hypogаstricа Navás, 1914a, by monotypy. A junior homonym of Stenispа Baly, 1858 (Insecta: Coleoptera: Chrysomelidae). Distribution: Palearctic, Oriental, and Australasian: Far eastern USSR, Japan, northeastern India to New Guinea. Diagnosis (Fig. 7): Eumantispa can be distinguished from all other Oriental and Palearctic genera by the subdivision of the radial cells (Fig. 7a and b). To our knowledge this feature is not found in any other mantispine genus. Notes: The Eumantispa of China were reviewed by Yang & Liu (2010). A new species, E. pseudoharmandi, was described. The figures of the newly described species erroneously refer to E. paraharmandi and was corrected in a subsequent publication (Yang & Liu 2011). E. pseudoharmandi is regarded as the correct name. The species resembles quite a number of unidentified specimens found in the collections from the various museums from outside China. It is therefore possible that E. pseudoharmandi is a synonym of a species already described and should be investigated (see Appendix). Eumantispa harmandi has been associated with several species of Agelenidae spiders and one Sparassidae species (Hirata & Ishii 1995). The first instar larvae are known to board spiders; they attach to the carapace of the spider (Hirata & Ishii 1995; Hirata 1999).Published as part of Snyman, Louwrens P., Sole, Catherine L. & Ohl, Michael, 2018, A revision of and keys to the genera of the Mantispinae of the Oriental and Palearctic regions (Neuroptera: Mantispidae), pp. 501-549 in Zootaxa 4450 (5) on pages 511-512, DOI: 10.11646/zootaxa.4450.5.1, http://zenodo.org/record/144499
A New Finding of a Tethered Cord in a Patient with Okamoto Syndrome
No full textWe report a boy with Okamoto syndrome who presented to us at 11 years and 3 months of age with bladder dysfunction and gait difficulties suggestive of tethered cord syndrome (TCS). To date, TCS has yet to be reported in the history of individuals with this syndrome (Table 1). The patient subsequently underwent filum terminale sectioning with neuromonitoring for release of his cord. This surgery is relatively safe (Michelson and Ashwal, 2004), and this patient showed a reversal of his TCS symptoms at follow-up clinical visits.Peer reviewed
Neutron diffraction studies of magnetostrictive Fe–Ga alloy ribbons
No full textMelt-spun Fe–Ga ribbons were prepared and some ribbons were annealed at 1000 °C for 1 h then
slowly cooled to room temperature. X-ray diffraction patterns revealed no evidence of texture and
only bcc phase in the as-quenched ribbons. However, high-resolution neutron diffraction patterns
gave more information on the structure of these ribbons. Only diffractions from the disordered bcc
A2 phase were found in as-quenched ribbons with 15, 17.5, and 19.5 at. % Ga content, without any
trace of satellite peaks or splitting peaks from the proposed Ga–Ga pairing superlattice structure.
The broadening of the base of the �110� peaks for all samples except the as-quenched 15 at. % Ga
ribbon might indicate the existence of some kind of short range ordering. Ribbons developed L12
phase after annealing especially in the Fe 19.5 at. % Ga ribbon where the formation of L12 phase
reduced the Ga content in the remaining A2 phase and decreased its lattice parameter dramatically.
D03 phase formed in the as-quenched 22.5 at. % Ga ribbon and the following annealing treatment
transformed more A2 phase into D03 phase
Sociology essay
No full textSociology essay by George Okamoto for a class assignment at Tri-State High School at Tule Lake incarceration camp. Covers democracy and racial prejudice.The Japanese American Archival Collection documents the people, places, and daily life of Japanese Americans, primarily those who lived in the once thriving community of pre-war Florin in the Sacramento region, as well as the conditions in American incarceration camps during World War II. The approximately 7,000 original items include personal and official letters, photographs, diaries, arts and crafts, newsletters, textiles, camps artifacts, yearbooks and other publications
Blowup and ill-posedness results for a dirac equation without gauge invariance
No full textWe consider the Cauchy problem for
a nonlinear Dirac equation on , ,
with a power type, \emph{non} gauge invariant nonlinearity .
We prove several ill-posedness and blowup results for
both large and small data. In particular we prove that:
for (essentially arbitrary) large data in
the solution blows up in a
finite time;
for suitable large data and
no weak solution exist;
when
(or in ), there exist arbitrarily small
initial data data for which the solution blows up in a finite time
On the cubic Dirac equation with potential and the Lochak--Majorana condition
No full textWe study a cubic Dirac equation on
\begin{equation*}
i \partial _t u + \D u + V(x) u =
\langle \beta u,u \rangle \beta u
\end{equation*}
perturbed by a large potential with almost critical regularity. We prove global existence and scattering for small initial data in with additional angular regularity. The main tool is an endpoint Strichartz estimate for the perturbed Dirac flow. In particular, the result covers the case of spherically symmetric data with small norm.
When the potential has a suitable structure, we prove global existence and scattering for \emph{large} initial data having a small chiral component, related to the Lochak--Majorana condition
Analysis of Light and Current Induced Effects on mu-tau Product and localized Electronic States in a-Si:H
No full textFULL- LENGTH GENOMIC SEQUENCE OF HEPATITIS C VIRUS GENOTYPE 2C ISOLATE (BEBE1) AND THE 2C- SPECIFIC PCR PRIMERS.
No full textQCD-based charge symmetry breaking interaction and the Okamoto-Nolen-Schiffer anomaly
No full textAn approach is proposed to link the charge symmetry breaking (CSB) nuclear
interaction and the low-energy constants in quantum chromodynamics (QCD) by
matching the CSB effect in nuclear matter. The resulting CSB interaction is
applied to study the Okamoto-Nolen-Schiffer anomaly, still lacking a
satisfactory microscopic understanding, on the energy differences of mirror
nuclei by taking -, -, -, and - as typical
examples. The magnitude and sign of the QCD-based CSB interactions are found to
resolve the anomaly successfully within theoretical uncertainties.Comment: 6 pages, 2 figures, 6 tables in the main text; 6 pages, 2 figures, 3
tables in the supplemental materia
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