The cover picture shows the crystal structure of a new, orange, Ca‐containing pigment lake derived from diazo coupling of orthanilic acid to 4‐morpholino‐2‐naphthol. The crystal structure is of a novel type in which the morpholino substituent has prevented the formation of a 1‐dimensional p...
The syntheses of a series of new ketohydrazone dyes and pigment lakes with a unique structural motif derived from 4‐morpholino‐2‐naphthol are described. The morpholine substituent is responsible for the hypsochromically shifted absorption maxima with significantly enhanced molar extinction co...
The SE60, a low molecular weight, sulfur-rich protein in soybean, is known to be homologous to wheat γ-purothionin. To elucidate the functional role of SE60, we expressed SE60 cDNA in Escherichia coli and in tobacco plants. A single protein band was detected by SDS–polyacrylamide gel electroph...
Thionins have a considerable potential as antimicrobial compounds although their application may be restricted by metal ion-based inhibition of membrane permeabilizing activity. We previously reported the properties associated with the proposed mechanism of metal ion-based inhibition of β-purot...
The microphase adsorption–spectral correction (MPASC) technique was applied to the interaction of thioin (TN) with sodium dodecyl sulfate (SDS) at pH 4.56. The synergism mechanism of SDS in solution was analyzed and discussed. The great electrostatic aggregation of TN on SDS obeys Langmuir mono...
An organic UV absorbent has been intercalated into a layered double hydroxide (LDH) host by ion exchange of a Zn–Al–LDH-nitrate precursor with a solution of 2,3-dihydroxynaphthalene-6-sulfonic acid (DNSA) sodium salt in water. After intercalation of the UV absorbent, the powder X-ray diffracti...
The partial least squares (PLS) applied to the simultaneous determination of the divalent ions of copper, nickel, cobalt and zinc based on the formation of their complexes with 2-carboxy-2'-hydroxy-5'-sulfoformazyl benzene (zincon). The absorption spectra were recorded from 515 through 750nm. Th...
A new method that utilizes zincon-modified activated carbon (AC-ZCN) as a solid-phase extractant has been developed for simultaneous preconcentration of trace Cr(III) and Pb(II) prior to the measurement by inductively coupled plasma optical emission spectrometry (ICP-OES). The separation/preconc...
This paper demonstrates the potential of using a resonance Raman (RR) based method for the quantitative evaluation of protein concentrations. This method was applied to determine the concentration of bovine serum albumin (BSA) protein using zincon. In the protein–zincon liquid mixture, the numb...
We combine direct observations, longer-term wave data, and model calculations to characterize resuspension and transport of fine-grained, effluent-affected sediment on the Palos Verdes shelf. Near-bed waves, currents, and suspended sediment concentrations were monitored during the winter of 1992...
The singlet fission (SF) dynamics of pentacene linear aggregate models are investigated using the quantum master equation method by focusing on the Frenkel excitonic (FE) coupling effects on the SF rate and double triplet (TT) yield as well as on their aggregate size dependences. It is found tha...
Considerable efforts have been devoted to achieving stable acene derivatives for electronic applications; however, the instability is still a major issue for such derivatives. To achieve higher stability with minimum structural change, CC units in the acenes were replaced with isoelectronic BN u...
Organic thin film phototransistor (OPTs) devices in bottom‐gate/top‐contact configuration were fabricated and used as analytic system to study the electrical and optical properties of pentacene. The channel of the OTFT devices was illuminated by laser radiation of wavelength 670 nm and the eff...
The antihistaminic agent methapyrilene hydrochloride (MPH, CAS No. 135-23-9) has been reported as a potent rat hepatocarcinogen. However, neither the action mechanism nor mutagenicity of MPH have been clearly elucidated yet. Chromosomal aberration (Ca) tests were performed with MPH in CHO-K1-BH4...
The antihistaminic agent methapyrilene hydrochloride (MPH, CAS No. 135-23-9) has been reported as a potent rat hepatocarcinogen. However, neither the action mechanism nor mutagenicity of MPH have been clearly elucidated yet. Chromosomal aberration (CA) tests were performed with MPH in CHO-K1-B...
The repeated dose liver micronucleus (RDLMN) assay using young adult rats has the potential to detect genotoxic hepatocarcinogens that can be integrated into a general toxicity study. The assay methods were thoroughly validated by 19 Japanese facilities. Methapyrilene hydrochloride (MP), known t...
A voltammetric method of Cr(VI) determination in a flow system based on the combination of selective accumulation of the product of Cr(VI) reduction on hanging mercury drop electrode and a very sensitive method of chromium determination in the presence of cupferron previously described is propos...
A sensitive, simple and fast adsorptive stripping voltammetric procedure for trace determination of cadmium in natural samples containing high concentrations of surface active substances and humic substances has been developed. The method is based on adsorptive accumulation of the Cd(II)‐cupfer...
A sequential AdSV method based on the accumulation of Zr(IV) and V(V) as cupferron‐oxalic acid‐1,3‐diphenylguanidine (COD) complexes at the HMDE was used to determine traces of these metals in samples with different ionic strengths. DP mode, Eads −0.6 and −0.2 V (vs. Ag/AgCl, 3 mol L−1 KCl), ...
The synthesis and characterization of Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), Pd(II) and UO 2 (II) chelates of 1-(2-thiazolylazo)-2-naphthalenol (TAN) were reported. The dissociation constants of the ligand and the stability constants of the metal complexes were calculat...
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