ABSTRACT
We describe a new species of satyrine butterfly, Ypthima thao Monastyrskii Lang sp. nov., recently discovered in northern Vietnam and southwestern China. This species is similar to Y. praenubila, which is distributed in the same region, and we speculate on their biogeographic origins.
Subject(s)
Butterflies , Animals , China , VietnamABSTRACT
A new species and eight new subspecies of Papilionoidea discovered in Vietnam between 2002 and 2020 are described and illustrated. The status of two taxa are revised. New taxa include Pieridae: Delias sanaca bidoupa Monastyrskii Vu subspec. nov. and Talbotia naganum aurelia Monastyrskii Vu subspec. nov.; Nymphalidae: Abrota ganga pulcheria Monastyrskii Vu, subspec. nov.; Bassarona recta consonensis Monastyrskii Vu, subspec. nov.; Pantoporia bieti aurantina Monastyrskii To subspec. nov.; Ragadia latifasciata cristata Monastyrskii Vu, subspec. nov.; Ragadia latifasciata crystallina Monastyrskii Vu, subspec. nov.; Faunis indistincta luctus Monastyrskii Vu subspec. nov. Aemona gialaica Monastyrskii, K. Saito Vu, spec. nov. The taxon infuscata Devyatkin Monastyrskii, previously described as the subspecies Aemona tonkinensis infuscata, was elevated to the species level, while the taxon critias (Ragadia critias Riley Godfrey) was reduced to a subspecies. Three Satyrinae species were recorded from Vietnam for the first time: Palaeonympha opalina Butler, 1871; Ypthima motschulskyi Bremer Grey, 1853; and Ragadia latifasciata Leech, 1891.
Subject(s)
Butterflies , Leeches , Scyphozoa , Animals , VietnamABSTRACT
We used wet chemical methods to synthesize core-shell nanocrystalline samples CdS(d)/ZnSe N , where d = 3-6 nm and N = 1-5 are the size of CdS cores and the number of monolayers grown on the cores, respectively. By annealing typical CdS(d)/ZnSe N samples (with d = 3 and 6 nm and N = 2) at 300 °C for various times t an = 10-600 min, we created an intermediate layer composed of Zn1-x Cd x Se and Cd1-x Zn x S alloys with various thicknesses. The formation of core-shell structures and intermediate layers was monitored by Raman scattering and UV-vis absorption spectrometers. Careful photoluminescence studies revealed that the as-prepared CdS(d)/ZnSe N samples with d = 5 nm and N = 2-4, and the annealed samples CdS(3 nm)/ZnSe2 with t an ≤ 60 min and CdS(6 nm)/ZnSe2 with t an ≤ 180 min, show the emission characteristics of type-II systems. Meanwhile, the other samples show the emission characteristics of type-I systems. These results prove that the partial separation of photoexcited carriers between the core and shell is dependent strongly on the engineered core-shell nanostructures, meaning the sizes of the core, shell, and intermediate layers. With the tunable luminescence properties, CdS-ZnSe-based core-shell materials are considered as promising candidates for multiple-exciton generation and single-photon sources.
ABSTRACT
The present paper is concerned with radiochemical methodology to furnish the trifluoromethyl motif labelled with (18)F. Literature spanning the last four decades is comprehensively reviewed and radiochemical yields and specific activities are discussed.
Subject(s)
Fluorine Compounds/chemical synthesis , Fluorine Radioisotopes/chemistry , Radiochemistry/methods , Radiopharmaceuticals/chemical synthesis , Fluorine Compounds/chemistry , Radiopharmaceuticals/chemistryABSTRACT
This report is concerned with an efficient, Cu(I)-mediated method for the radiosynthesis of [(18)F]trifluoromethyl arenes, abundant motifs in small molecule drug candidates and potential radiotracers for positron emission tomography. Three (18)F-labelled radiotracer candidates were synthesised from [(18)F]fluoride ions as proof of principle. The new protocol is widely applicable for the synthesis of novel radiotracers in high radiochemical yields.
Subject(s)
Fluorine Radioisotopes/chemistry , Isotope Labeling/methods , Radiopharmaceuticals/chemical synthesis , Catalysis , Copper/chemistry , Fluorides/chemistry , Positron-Emission Tomography/methods , Radiopharmaceuticals/pharmacologyABSTRACT
OBJECTIVES: The objectives of this study were to assess the effects of long-term supplementation with arachidonic acid (AA; 20:4n-6) and docosahexaenoic acid (DHA; 22:6n-3) on cell phenotypes and cytokine production in children. PATIENTS AND METHODS: This randomized, double-blind, placebo-controlled trial provided children, (ages 5-7 years; n = 37) who had low intakes of DHA, with a dietary supplement containing AA (20-30 mg daily) and DHA (14-21 mg daily) or a placebo supplement for 7 months. After the supplementation period, a series of stimulants (pokeweed mitogen, phytohemagluttinin, lipopolysaccharide, beta-lactoglobulin, and ibuprofen) was used to stimulate peripheral blood mononuclear cells ex vivo. Antigen expression on T cells (CD25 and CD80), B cells, and macrophages (CD54), as well as cytokine production (interleukin [IL]-4, IL-10, tumor necrosis factor, IL-2, IL-6, and interferon-gamma), were measured using flow cytometry, monoclonal antibodies, and cytometric bead array, respectively. RESULTS: Mononuclear cells from children provided long-chain polyunsaturated fatty acids (LCPUFAs) had fewer CD8+ cells expressing CD25 and CD80 compared with placebo after exposure to each mitogen. The LCPUFA group also exhibited lower proportions of CD14+ cells after stimulation with beta-lactoglobulin and ibuprofen. The proportion of CD54+ cells was 2-fold higher for the LCPUFA group compared with placebo after exposure to ibuprofen and beta-lactoglobulin (P < 0.05). Each of these immune effects related to the amount of AA and/or DHA in the plasma and erythrocyte phospholipids. CONCLUSIONS: Alterations in cell phenotypes were evident when children were supplemented with AA and DHA. The results of this study have important implications for immune development and sensitivity to antigens in children.
Subject(s)
Arachidonic Acid/administration & dosage , Cytokines/biosynthesis , Dietary Fats, Unsaturated/administration & dosage , Docosahexaenoic Acids/administration & dosage , Leukocytes, Mononuclear/drug effects , Leukocytes, Mononuclear/immunology , Arachidonic Acid/immunology , Child , Child, Preschool , Dietary Fats, Unsaturated/immunology , Dietary Supplements , Docosahexaenoic Acids/immunology , Double-Blind Method , Fatty Acids, Omega-3/administration & dosage , Fatty Acids, Omega-3/immunology , Female , Humans , Immunophenotyping , Lymphocyte Activation , MaleABSTRACT
We demonstrate an integrated sensor module that combines a photonic nano-porous sensor and a bias-free optical powered RF transducer. The sensor signal is encoded in the RF frequency ready for transmission. The entire sensor module does not include battery and is constructed with the flexible and biocompatible elastomeric polymer, PDMS. This technology holds promise for wearable sensors.