96,429 research outputs found
Values of parameters in the linearized (Lin) and nonlinear (N-Lin) fittings of isotherm models at 60 mg L<sup>-1</sup> Pb<sup>2+</sup> (solution pH = 6±0.2, contact time = 60 min, and adsorbent amount = 0.3 g).
No full textValues of parameters in the linearized (Lin) and nonlinear (N-Lin) fittings of isotherm models at 60 mg L-1 Pb2+ (solution pH = 6±0.2, contact time = 60 min, and adsorbent amount = 0.3 g).</p
Spatial Chow-Lin Methods for Data Completion in Econometric Flow Models
No full textFlow data across regions can be modeled by spatial econometric models, see LeSage and Pace (2009). Recently, regional studies became interested in the aggregation and disaggregation of flow models, because trade data cannot be obtained at a disaggregated level but data are published on an aggregate level. Furthermore, missing data in disaggregated flow models occur quite often since detailed measurements are often not possible at all observation points in time and space. In this paper we develop classical and Bayesian methods to complete flow data. The Chow and Lin (1971) method was developed for completing disaggregated incomplete time series data. We will extend this method in a general framework to spatially correlated flow data using the cross-sectional Chow-Lin method of Polasek et al. (2009). The missing disaggregated data can be obtained either by feasible GLS prediction or by a Bayesian (posterior) predictive density.Missing values in spatial econometrics, MCMC, non-spatial Chow-Lin (CL) and spatial Chow-Lin (SCL) methods, spatial internal flow (SIF) models, origin and destination (OD) data
Glenea changchini Lin & Lin, 2011, sp. nov.
No full textGlenea changchini sp. nov. (Figs 1–8) Description (based on three males): Male: length: 21.8 –24.0 mm, humeral width: 6.2–6.7 mm. Body dark violet. Head violet-black, with two light blue pubescent stripes on occiput, which extend around superior eye lobes and antennal tubercles. Frons with inferior eye lobes surrounded with light blue pubescent stripes which cross genae and reaching clypeus; tempora covered with light blue pubescence. Antenna red brown, basal three antennomeres darker and with light blue pubescence on ventral and inner sides, others with a faint grayish pubescence. Prothorax dark violet, pronotum with three light blue pubescent stripes (one median and one on each lateral margin) and each side with a large white patch around coxa (propleura pubescent). Scutellum with white or light blue pubescence. Elytron dark violet, with 9–11 snow-white or light blue markings (named in Fig. 3); A, B at basal fourth and C at apical fourth are more stable than others in both position and shape; D and d are smaller and sometimes absent; E-e, F-f and G-g forming oblique lines and sometimes confluent; e, f and g are quite variable in shape. Ventral surface reddishviolet; with several whitish maculae: mesepisternum, mesepimeron and most of metepisternum whitish pubescent; two patches on each side of apical abdominal segments 1–4; other parts with fulvous brown pubescence. Femora reddish-brown and glossy; tibiae and tarsi reddish-brown and with hair and pubescence, especially apical part of hind tibiae and tarsi densely covered with fulvousbrown hair and pubescence. Head slightly narrower than prothorax. Eyes medially emarginate, inferior eyelobes two times as high as genae below. Antennae relative slender, longer than body (9 th antennomere reaching elytral apex); antennomere ratio: male: 25: 5: 40: 30: 30: 27: 27: 23: 23: 22: 30. Last antennomere (Fig. 4) subdivided at apical third. Prothorax densely punctured, slightly narrower from base to apex. Elytron densely and coarsely punctured, gradually narrower apically, with 2 lateral carinae, neither from base nor reaching apex; apex transversely truncated, rounded at inner angle and with a very minute and scarcely perceptible tooth at outer angle. Legs slender, middle tibiae hardly grooved, hind femur reaching fourth abdominal segment, first hind tarsal segment subequal to following two segments combined. Tarsal claws simple. Male genitalia (Figs 5–7): Tegmen length about 3.4 mm; lateral lobes stout, each about 0.7 mm long and 0.3 mm wide, with a curved ridge at base; apex with fine setae shorter than half of lateral lobes; basal piece well-developed and not bifurcated; median lobe plus median struts slightly curved (Fig. 5 b), obviously longer than tegmen (22: 17); median struts more than half of whole median lobe in length; dorsal plate shorter than ventral plate; apex of ventral plate (Fig. 6) rounded; median foramen elongated, pointed at apex (angle about 30 degree); internal sac more than twice as long as median lobe plus median struts, with four pieces of basal armature (located at middle of median struts), two bands of supporting armature (very weak), and three rods of endophallus, rods subequal, each about 3.8 mm, longer than tegmen. Tergite VIII (Figs 8 a, 8 c) much broader than long, apex truncated to slightly emarginated, with moderate long setae at sides, setae in the middle shorter and sparser. Sternite IX subequal to ringed part of tegmen in length. Female unknown. Diagnosis. Though the external appearance is similar to G. diana, G. paradiana and G. subsimilis, this species differs not only by the pubescent markings, but also in the following characters: elytral apex rounded at the inner angle (usually bidentate in Glenea), claws simeple, and basal armature located at middle of median struts (usually located out of median lobe in other Glenea spp.). Etymology. The species is named after Mr. Changchin Chen (Tianjin, China), who offered the authors lots of material, support and kind help in various ways. Remarks. The species is similar to subgenera Rubroglenea (pronotal puncturation and elytral apex different) and Macroglenea (male claw, genitalia and elytral apex different). The genus Glenea, as considered here, includes a diverse, and probably multi-generic assemblage of species. For example, some Heteroglenea species were previously placed in Glenea (Lin et. al, 2009). To clarify the subgeneric and generic relationships, a world-wide study of Glenea is required. Distribution. China: Yunnan. Material examined. Holotype (23.0 mm long), male, China, Yunnan prov., Jinping county, Ma’andi, Biaoshuiyan (22 ° 44 'N 103 ° 29 'E), alt. 1350 m, 2010. V. 13, leg. Xiaodong Yang (IZAS, IOZ (E) 1859451). Paratypes: 1 male, Yunnan prov., Jinping county, Ma’andi, Biaoshuiyan (22 ° 44 'N 103 ° 29 'E), alt. 1350 m, 2010. V. 15, leg. Wenhsin Lin (CCCC); 1 male (21.8 mm long), same data (IZAS, IOZ (E) 1859452). Correction. In the paper “Eight species of the genus Glenea Newman, 1842 from the Oriental Region, with description of three new species (Coleoptera: Cerambycidae: Lamiinae: Saperdini). Zootaxa, 2155: 1–22 ”, there is an error which needs correction. In Figures 25–26 on page 12, ‘ subrubricollis ’ in 25 L and 26 L should read ‘ nigrorubricollis ’. We thank Dr. Carolus Holzschuh (Villach, Austria) for bringing this to our attention.Published as part of Lin, Meiying & Lin, Wenhsin, 2011, Glenea changchini sp. nov. from Yunnan of China (Coleoptera: Cerambycidae: Lamiinae: Saperdini), pp. 13-17 in Zootaxa 2987 on pages 13-14, DOI: 10.5281/zenodo.20811
Gastrodia elata Bl. f. cyaneum L. B. Lin: A new form of Gastrodia (Orchidaceae) in Yunnan
No full text[Objective] Gastrodia elata Bl. f. cyaneum L. B. Lin represents a newly identified form of
Gastrodia originated from Xiaocaoba Town of Zhaotong in Yunnan, providing comprehensive documentation
of morphological characteristics with color photographs. [Methods] The aim was to identify G. elata
f. cyaneum as a novel form by meticulous dissection, morphological examination, and comparative analysis
with established specimens and literatures. [Results] Distinguished features that set G. elata f. cyaneum
apart include an inverted egg-shaped tuber, the protruding, long, gray-green terminal bud, and the
clear blue color of the floral axis, flowers, and capsules. [Conclusion] This research identify G. elata f.
cyaneum as a novel form, which not only enriches the diversity of orchids, but also presents valuable resources
for the breeding of G. elata
The anti-microbial peptide (Lin-SB056-1)2-K reduces pro-inflammatory cytokine release through interaction with Pseudomonas aeruginosa lipopolysaccharide
No full textThe ability of many anti-microbial peptides (AMPs) to modulate the host immune response has highlighted their possible therapeutic use to reduce uncontrolled inflammation during chronic infections. In the present study, we examined the anti-inflammatory potential of the semi-synthetic peptide lin-SB056-1 and its dendrimeric derivative (lin-SB056-1)2-K, which were previously found to have anti-microbial activity against Pseudomonas aeruginosa in in vivo-like models mimicking the challenging environment of chronically infected lungs (i.e., artificial sputum medium and 3-D lung mucosa model). The dendrimeric derivative exerted a stronger anti-inflammatory activity than its monomeric counterpart towards lung epithelial-and macrophage-cell lines stimulated with P. aeruginosa lipopolysaccharide (LPS), based on a marked decrease (up to 80%) in the LPS-induced production of different pro-inflammatory cytokines (i.e., IL-1β, IL-6 and IL-8). Accordingly, (lin-SB056-1)2-K exhibited a stronger LPS-binding affinity than its monomeric counterpart, thereby suggesting a role of peptide/LPS neutralizing interactions in the observed anti-inflammatory effect. Along with the anti-bacterial and anti-biofilm properties, the anti-inflammatory activity of (lin-SB056-1)2-K broadens its therapeutic potential in the context of chronic (biofilm-associated) infections
5.6 kW peak power, nanosecond pulses at 274 nm from a frequency quadrupled Yb-doped fiber MOPA
No full textDataset for the paper:
He, J, Lin, D, Xu, L, Beresna, M, Zervas, M, Alam, S-U & Brambilla, G (2018) '5.6 kW peak power, nanosecond pulses at 274 nm from a frequency quadrupled Yb-doped fiber MOPA' in Optics Express
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SPATIAL CHOW-LIN METHODS: BAYESIAN AND ML FORECAST COMPARISONS
No full textCompleting data that are collected in disaggregated and heterogeneous spatial units is a quite frequent problem in spatial analyses of regional data. Chow and Lin (1971) (CL) were the rst to develop a uni ed framework for the three problems (interpolation, extrapolation and distribution) of predicting disaggregated times series by so-called indicator series. This paper develops a spatial CL procedure for disaggregating cross-sectional spatial data and compares the Maximum Likelihood and Bayesian spatial CL forecasts with the naive pro rata error distribution. We outline the error covariance structure in a spatial context, derive the BLUE for the ML estimator and the Bayesian estimation procedure by MCMC. Finally we
apply the procedure to European regional GDP data and discuss the disaggregation assumptions. For the evaluation of the spatial Chow-Lin procedure we assume that only NUTS 1 GDP is known and predict it at NUTS 2 by using employment and spatial information available at NUTS 2. The spatial neighborhood is de ned by the inverse travel time by car in minutes. Finally, we present the forecast accuracy criteria comparing the predicted values with the actual observations.
Electron transfer with core-level excitations at hybrid interfaces
No full textElectron core-level spectroscopies have emerged as effective tools to investigate several aspects of the hybrid interface between organic molecules and a substrate. In particular, resonant photoemission spectroscopy can measure interfacial electron transfer times down to the femtosecond timescale. Furthermore, the strong perturbation induced by the core hole opens up the several questions on how the properties of the interface are modified, calling for a theoretical description of the core-excited system.
We adopt a theoretical framework based on density-functional theory (DFT), where the excitation is introduced explicitly in the core-level occupation of an atom in a molecule, to investigate the electronic structure and electron transfer from/to organic molecules adsorbed on metal, semimetal, and semiconducting substrates.
The perturbing potential lowers the energy of the molecular orbitals. Focusing on the lowest-unoccupied (LUMO), a filling of the core-excited LUMO* by substrate electrons may occur within the core-hole lifetime, as found for molecules on metals where the adsorption angle is also shown to influence the electron transfer rate [1,2]. In the case of a semimetal graphene substrate, a spin-polarized LUMO* pinned at the Fermi level can be determined for physisorbed molecules. In that case electron transfer would be suppressed given the low density of states of unsupported graphene at that energy, but still possible for graphene supported on a metal [3]. For molecules adsorbed on a semiconductor, the LUMO* may form a bound exciton in the gap [4]. Here, we found especially interesting to consider the influence of thermal motion on the energy-level alignment and the absorption coefficient [5,6].
References
[1] D. Cvetko, G. Fratesi, G. Kladnik, A. Cossaro, G.P. Brivio, L. Venkataraman, and A. Morgante, submitted.
[2] A. Baby, G. Fratesi, S.R. Vaidya, L.L. Patera, C. Africh, L. Floreano, G.P. Brivio, J. Phys. Chem. C 119 (2015) 3624.
[3] A. Ravikumar, A. Baby, H. Lin, G.P. Brivio, and G. Fratesi, Scientific Reports 6 (2016) 24603.
[4] G. Fratesi, C. Motta, M. I. Trioni, G. P. Brivio, and D. Sánchez-Portal, J. Phys. Chem. C 118 (2014) 8775
[5] H. Lin, G. Fratesi, S. Selçuk, G.P. Brivio, and A. Selloni, J. Phys. Chem. C, 120 (2016) 3899.
[6] M. Muller, D. Sànchez-Portal, H. Lin, G. Fratesi, G.P. Brivio, and A. Selloni, in preparation
Coexistence of superconductivity and magnetism in the composite material (La1.85Sr0.15CuO4)1-x(La0.3Dy0.4Sr0.3MnO3)x
No full textl-connectivity, l-edge-connectivity and spectral radius of graphs
No full textLet G be a connected graph. The toughness of G is defined as
t(G)=min{\frac{|S|}{c(G-S)}}, in which the minimum is taken over all proper
subsets S\subset V(G) such that c(G-S)\geq 2 where c(G-S) denotes the number of
components of G-S. Confirming a conjecture of Brouwer, Gu [SIAM J. Discrete
Math. 35 (2021) 948--952] proved a tight lower bound on toughness of regular
graphs in terms of the second largest absolute eigenvalue. Fan, Lin and Lu
[European J. Combin. 110 (2023) 103701] then studied the toughness of simple
graphs from the spectral radius perspective. While the toughness is an
important concept in graph theory, it is also very interesting to study |S| for
which c(G-S)\geq l for a given integer l\geq 2. This leads to the concept of
the l-connectivity, which is defined to be the minimum number of vertices of G
whose removal produces a disconnected graph with at least l components or a
graph with fewer than l vertices. Gu [European J. Combin. 92 (2021) 103255]
discovered a lower bound on the l-connectivity of regular graphs via the second
largest absolute eigenvalue. As a counterpart, we discover the connection
between the l-connectivity of simple graphs and the spectral radius. We also
study similar problems for digraphs and an edge version
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