1,758 research outputs found
Preparation of bufalin-loaded pluronic polyetherimide nanoparticles, cellular uptake, distribution, and effect on colorectal cancer [Corrigendum]
No full textHu Q, Liang B, Sun Y, Guo XL, Bao YJ, Xie DH, Zhou M, Duan YR, Yin PH, Peng ZH. Int J Nanomedicine. 2014;9(1):4035–4041. On page 4040, Figure 6C is incorrect.Read the original articl
Synthesis and physical performance of indole and benzimidazole cyanine dyes
No full textNine indole and benzimidazole cyanine dyes, used as green-sensitizing dyes in photographic emulsions, are synthesized. The compounds are characterized from mass spectrometric and NMR spectroscopic data, and elemental analysis. FAB mass spectrometry proved to be an efficient method for determining the structure of the compounds. From UV-VIS data of the compounds the sensitizing properties of the cyanine dyes are predicted. The reflection spectrum of Gs2-9 coated in photographic emulsions showed J-aggregation behaviour at lambda=560 nm. Unsymmetric benzimidazole-indole cyanine dyes showed good to excellent green sensitizing properties in photographic emulsions, whereas symmetric indole cyanine dyes showed heavy residual colour and no sensitizing properties
SLL1-ZH Regulates Spikelets Architecture and Grain Yield in Rice
No full textThe spikelet developmental processes that control structure and floral organ identity play critical roles in rice grain yield formation. In this study, we characterized a novel rice mutant, SLL1-ZH, which exhibits a variety of defective agronomic characters, including semi-dwarf, rolling leaf, deformed panicles, and reduced grains production. Morphological analysis also revealed that the SLL1-ZH mutant shows numerous defects of floral organs, such as cracked glumes, hooked and thin lemmas, shrunken but thickened paleas, an indeterminate number of stamens and stigmas, and heterotopic ovaries. Map-based cloning identified a single nucleotide substitution (C to G) in the first exon of LOC_Os09g23200 that is responsible for the SLL1-ZH phenotype. In addition, qPCR analysis showed a significant change in the relative expression of SLL1-ZH in the mutant during inflorescence differentiation and in the different floral organs. Transcription of rice floral organ development-related factors also changed significantly in the mutant. Therefore, our results suggested that SLL1-ZH plays a great role in plant growth, spikelet development, and grain yield in rice
Stability and Convergence Analysis of Second-Order Schemes for a Diffuse Interface Model with Peng-Robinson Equation of State
No full textIn this paper, we present two second-order numerical schemes to solve the fourth order parabolic equation derived from a diffuse interface model with Peng-Robinson Equation of state (EOS) for pure substance. The mass conservation, energy decay property, unique solvability and L-infinity convergence of these two schemes are proved. Numerical results demonstrate the good approximation of the fourth order equation and confirm reliability of these two schemes.We are grateful to Prof. Zhizhong Sun of Department of Mathematics of Southeast University and Prof. Hehu Xie of Institute of Computational Mathematics of Chinese Academy of Sciences for providing useful suggestions and many helpful discussions. The research of Zhonghua Qiao is partially supported by the Hong Kong Research Grant Council GRF grant 15302214, NSFC/RGC Joint Research Scheme N_HKBU204/12 and the Hong Kong Polytechnic University internal grant 1-ZE33. Shuyu Sun gratefully acknowledges that the research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST)
Two-Phase Fluid Simulation Using a Diffuse Interface Model with Peng--Robinson Equation of State
No full textIn this paper, two-phase fluid systems are simulated using a diffusive interface model with the Peng-Robinson equation of state (EOS), a widely used realistic EOS for hydrocarbon fluid in the petroleum industry. We first utilize the gradient theory of thermodynamics and variational calculus to derive a generalized chemical equilibrium equation, which is mathematically a second-order elliptic partial differential equation (PDE) in molar density with a strongly nonlinear source term. To solve this PDE, we convert it to a time-dependent parabolic PDE with the main interest in its final steady state solution. A Lagrange multiplier is used to enforce mass conservation. The parabolic PDE is then solved by mixed finite element methods with a semi-implicit time marching scheme. Convex splitting of the energy functional is proposed to construct this time marching scheme, where the volume exclusion effect of an EOS is treated implicitly while the pairwise attraction effect of EOS is calculated explicitly. This scheme is proved to be unconditionally energy stable. Our proposed algorithm is able to solve successfully the spatially heterogeneous two-phase systems with the Peng-Robinson EOS in multiple spatial dimensions, the first time in the literature. Numerical examples are provided with realistic hydrocarbon components to illustrate the theory. Furthermore, our computational results are compared with laboratory experimental data and verified with the Young-Laplace equation with good agreement. This work sets the stage for a broad extension of efficient convex-splitting semi-implicit schemes for numerical simulation of phase field models with a realistic EOS in complex geometries of multiple spatial dimensions.This author's work was partially supported by Hong Kong Research Council GRF grant PolyU 2021/12P and NSFC/RGC Joint Research Scheme N_HKBU204/12.This author's work was supported in part by the project entitled "Simulation of Subsurface Geochemical Transport and Carbon Sequestration," funded by the GRP-AEA Program at King Abdullah University of Science and Technology (KAUST)
THE PROBLEM OF PORTRAYING A NEW TYPE OF NATIONAL CHARACTER IN ZH. AYMAUYTOV'S NOVEL “KARTKOZHA”
No full textThe paper is devoted to the depiction of a new type of national identity in Zh. Aymauytov's novel "Kartkozha". The methodological basis of the research conducted was given by the scientific works of Kazakh literary critics S. Kirabaev and R. Nurgali, in which they carried out versatile studies of the problems on the typology of Zh. Aymauytov's novels. In solving the tasks, the methods of historical and functional theory are used. It is argued that Kartkozha acts as a perfect embodiment of the national character that convincingly reflects through behaviour and thoughts the most significant trends in social development in the October Revolution period. We show how the author of the novel tries to combine the humanistic traditions of the education novel in world literature with the class criterion for evaluating the activities of an individual. The new national type offered by Zh. Aymauytov is inseparable from the socio-economic conditions, but the main sources (drivers) of its formation and development still go back to such notions as the ethno-historical memory, the constructive genotypic potential of morality that is actualized by a person in a national space
MEAN FIELD SOLUTION OF SLAVE BOSON THEORY TO A MIXED-VALENCE TM IMPURITY SYSTEM
No full textPhysics, MultidisciplinarySCI(E)0ARTICLE123-311
Aspidistra shimentaiensis C. X. Peng, Y. Q. Li & C. R. Lin 2023, sp. nov.
No full textAspidistra shimentaiensis C.X. Peng, Y.Q. Li & C.R. Lin, sp. nov. (Figs. 1, 2) Type:— CHINA. Guangdong, Yingde City, Shimentai National Nature Reserve, on shady reclined slopes, 113.13° E, 24.49° N, alt. 475 m, 20 March 2023, Cai-Xia Peng & Yuan-Qiu Li pcx0338 (holotype: IBSC!, isotypes: IBSC! IBK!). Diagnosis:— The new species is morphologically similar to A. nankunshanensis, but clearly distinguished by its narrowly lanceolate leaf blade being 4.2–5.5 cm wide, prominent secondary veins, purplish red pistil, upper surface of stigma with a white triangular speckle and three inconspicuous Y-shaped wavy lines at center. Herbs perennial, evergreen, rhizomatous. Rhizome creeping, subterete, 6–8 mm thick, covered with scales, nodes dense. Roots numerous. Vaginal leaves 5–6, purple-red, 2–10 cm long, enveloping base of petiole, becoming blackbrown when dry. Leaves solitary, 1–1.5 cm apart; petiole stiff, upright, 18–32 cm long, 2–3 mm thick, adaxially sulcate; blade narrowly lanceolate, 33–45 cm long, 4.2–5.5 cm wide, dark green, frequently with small yellowish white spots, apex long acuminate, base cuneate, gradually tapering to petiole, inequilateral, margin entire, mid vein strongly prominent on abaxial surface, secondary veins prominent, 4–5 each side. Peduncle erect or declining, purple, 2.2–3.5 cm long, with 4–6 bracts, bracts gradually wider from base to top of peduncle, the topmost one broadly ovate, purplish red, 4–5 mm long, 10–12 mm wide, apex obtuse. Flower solitary at the top of the peduncle, often facing downwards; perianth fleshy, campanulate, 14–16 mm long, yellow with purple red stripes or yellowish purple inside and outside, 6-lobed apically; lobes ovate-triangular, 10–12 mm long, 6–8 mm wide at base; tube 4–6 mm long, 14–16 mm in diameter at upper opening. Stamens 6, opposite to lobes, subsessile, inserted at the base of perianth tube, anthers yellow, oblong, ca. 2 mm long and 1 mm wide. Pistil fleshy, purplish red, 7–9 mm long, ovary inconspicuous, style short, cylindrical, 1–2 mm long, ca. 1 mm in diameter, stigma enlarged, obconical, 6–7 mm long, upper surface slightly convex, 7–9 mm in diameter, with a white triangular speckle and 3 inconspicuous Y-shaped wavy lines at center, slightly undulate and 6-lobed at margin, side surface with 12 prominent longitudinal ridges. Berry subglobose, 14–15 mm in diameter, dull green to black brown, surface frequently with 3 longitudinal ribs when young, slightly irregularly tuberculate at maturity. Phenology:— The new species was observed flowering from March to April, and fruiting to mature in March next year. Etymology:— The specific epithet ‘ shimentaiensis ’ is derived from the name of the type locality, Shimentai National Nature Reserve, Yingde City, Guangdong, China. The Chinese name is given as ‘ ƂmḛwḍfflDz ’(Chinese pinyin: shí mén tái zhī zhū bào dàn). Distribution and ecology: —The new species is known only from the type locality. It grows on shady slopes under evergreen broad-leaved forests. Living plants introduced from the type locality are currently cultivated in South China Botanical Garden and Guilin Botanical Garden of Guangxi Institute of Botany. Conservation status: —According to our observations in the field investigations, only two populations with about 50 individuals each of the new species were found, and both populations were occurring in a protected area, where the habitat was in good condition. Further investigations in the neighbouring areas with similar habitat are needed to give a better understanding of its natural distribution and abundance. Thus, following the IUCN Red List Categories and Criteria (IUCN 2022), it is provisionally assessed as Data Deficient (DD). Similar species:— Aspidistra shimentaiensis is similar to A. nankunshanensis Yan Liu & C. R. Lin (2013: 123, Fig. 3) in the flower being broad bell-shaped and often facing downwards, but differs by the leaf blade 4.2–5.5 cm (vs. 5–7.5 cm) wide, perianth being yellow with purplish red stripes (vs. yellow) inside with lobes longer (vs. shorter) than tube, purplish red (vs. yellow) pistil, slightly convex (vs. flat) upper surface of sigma with a white triangular speckle and three inconspicuous Y-shaped wavy lines at center (vs. without white speckle and with four inconspicuous radial lines). A detailed morphological comparison between the two species is provided in Table 1.Published as part of Peng, Cai-Xia, Dai, Ke-Yuan, Li, Yuan-Qiu, Tong, Yi-Hua & Lin, Chun-Rui, 2023, Aspidistra shimentaiensis (Asparagaceae), a new species from Guangdong, China, pp. 87-92 in Phytotaxa 612 (1) on pages 88-91, DOI: 10.11646/phytotaxa.612.1.7, http://zenodo.org/record/830881
Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
No full textA search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. In the ZH mode, the Z boson is required to decay to a pair of charged leptons or a bb quark pair. The searches use the 8┬á TeV pp collision dataset collected by the CMS detector at the LHC, corresponding to an integrated luminosity of up to 19.7┬á fb-1. Certain channels include data from 7┬á TeV collisions corresponding to an integrated luminosity of 4.9┬á fb-1. The searches are sensitive to non-standard-model invisible decays of the recently observed Higgs boson, as well as additional Higgs bosons with similar production modes and large invisible branching fractions. In all channels, the observed data are consistent with the expected standard model backgrounds. Limits are set on the production cross section times invisible branching fraction, as a function of the Higgs boson mass, for the vector boson fusion and ZH production modes. By combining all channels, and assuming standard model Higgs boson cross sections and acceptances, the observed (expected) upper limit on the invisible branching fraction at mH = 125 ┬á GeV is found to be 0.58┬á(0.44) at 95┬á% confidence level. We interpret this limit in terms of a Higgs-portal model of dark matter interactions. © 2014, The Author(s)
Poetic Biography of G.-Zh. Tuguldurov (1817-1872), the Vth Abbot of Aginsky Datsan Dechen Lhundupling
No full textIntroduction. TThe article is devoted to the study of the poetic namthar — the biography of the Vth abbot of the Aginsky datsan Dechen Lhundupling Galsan-Zhimba Tuguldurov. The purpose of the study is analysis and introduction of this biography into scientific circulation. A previously unexplored manuscript of a Tibetan-language namthar from the collections of the Aginsky datsan was the object of the research. A copy of this manuscript “Seeds of the biography of the abbot of the monastery Dechen Lhundupling Choje Kelsang Jinpa Pelsangpo” (Tib. bde chen lhun grub gling gi khri pa chos rje skal bzang spyin pa dpal bzang po'i rnam thar gyi sa bon bzhugs) by unknown author was kindly given to us by the fund custodian D.V. Vakunin. The chronological scope of the source covers the period from 1817 to 1872. The relevance of this work is caused by the need of introducing this source into scientific circulation due to the fact that despite the significance of the personality of G.-Zh. Tuguldurov in the history of Buryat Buddhism, information about him and his works have not yet been fully researched. As a result of the study, new historical facts of the biography of G.-Zh. Tuguldurov were revealed; the names of his Mongolian teachers were established; a description of his contribution to the development of Buddhism in the Aginsky and Tsugolsky monasteries was given; the circumstances of G.-Zh Tuguldurov’s passing from life were described; founded was an unidentified earlier as his work a Sanskrit-Tibetan dictionary “Sanskrit-Tibetan dictionary with explanations compiled by Choje Tri-Rinpoche”
- …
