2,489 research outputs found
Prolog+CG: A Maintainer's Perspective
No full text Prolog+CG is an implementation of Prolog with Conceptual Graphs as first-class datastructures, on a par with terms. As such, it lends itself well to applications in which reasoning with Conceptual Graphs and/or ontologies plays a role. It as originally developed by Prof. Dr. Adil Kabbaj, who in 2004 turned over maintainership of Prolog+ CG to the present author. In this paper, Prolog+CG is described in terms of its history, evolution, and maintenance. A special web-enabled version of Prolog+CG is also described. Possible interoperability with CGIF and the CharGer tool are explored. Finally, we offer some general observations about the tenets that make Prolog+CG a success.</p
Voluntary corporate governance disclosure by post-apartheid South African corporations
No full textPurpose – The purpose of this paper is to investigate as to whether post-Apartheid South African (SA) listed corporations voluntarily comply with and disclose recommended good corporate governance (CG) practices and, if so, the major factors that influence such voluntary CG disclosure behaviour. Design/methodology/approach – The paper constructs a broad voluntary CG disclosure index containing 50 CG provisions from the 2002 King Report using a sample of 169 SA listed corporations from 2002 to 2006. The authors also conduct regression analysis to identify the main drivers of voluntary CG disclosure. Findings – The results suggest that while compliance with, and disclosure of, good CG practices varies substantially among the sampled companies, CG standards have generally improved over the five-year period examined. The authors also find that block ownership is negatively associated with voluntary CG disclosure, while board size, audit firm size, cross-listing, the presence of a CG committee, government ownership and institutional ownership are positively related to voluntary CG disclosure. Practical implications – These findings have important implications for policy-makers and regulators. Evidence of improving CG standards implies that efforts by various stakeholders at improving CG standards in SA companies have had some positive impact on CG practices of SA firms. However, the substantial variation in the levels of compliance implies that enforcement may need to be strengthened further. Originality/value – There is a dearth of evidence on the level of compliance with the King Report. This study fills this gap by providing evidence for the first time on the level of compliance achieved, as well as contributing generally to the literature on compliance with codes of good governance and voluntary disclosure.<br/
Combustion of Fuel Mixtures Containing Crude Glycerol (CG): Important Role of Interactions between CG and Fuel Components in Particulate Matter Emission
No full textThe
paper reports an investigation into the effect of interactions
among fuel components on the emission of particulate matter with aerodynamic
diameter of 10) during the combustion
of fuel mixtures containing a formulated crude glycerol (CG) in air
at 1400 °C. The experimental program considers four fuel components,
that is, bio-oil, water-soluble fraction of bio-oil (WSF), biochar,
and CG, two fuel blends, that is, bio-oil/methanol/CG blend (BMCG)
and WSF/CG blend (WSFCG), and four slurry fuels, that is, bio-oil/biochar
slurry (BB), WSF/biochar slurry (WSFB), BMCG/biochar slurry (BMCGB),
and WSFCG/biochar slurry (WSFCGB). The results show that PM10 from the combustion of CG-containing fuel blends (i.e., BMCG and
WSFCG) have unimodal distributions with a fine mode at ∼0.043
μm. Therefore, the PM10 are dominantly PM1, which contributes to ∼88.2 and ∼99.3% of the total
PM10 during the combustion of BMCG and WSFCG, respectively.
However, the combustion of CG-containing slurry fuels (i.e., BMCGB
or WSFCGB) produces PM10 having bimodal distributions with
a fine mode at ∼0.022 μm and a coarse mode at ∼2.438
μm. The introduction of biochar increases the contribution of
PM1–10 to the total PM10 from ∼11.8
and ∼0.7% for BMCG and WSFCG to ∼53.1 and ∼8.4%
for BMCGB and WSFCGB, respectively. For CG-containing fuel blends,
the interactions between CG and other fuel components result in enhanced
chlorination of volatile inorganic species due to the abundant Cl
originated from CG, leading to increasing emissions of these species
in PM1. For CG-containing slurry fuels, such enhanced chlorination
also takes place for both volatile and refractory inorganic species
in biochar, leading to increasing emission of both volatile and refractory
inorganic species in PM1 and decreasing emission of refractory
inorganic species in PM1–10
Cg-TIMP, an inducible tissue inhibitor of metalloproteinase from the Pacific oyster Crassostrea gigas with a potential role in wound healing and defense mechanisms(1)
No full textWe have cloned and characterized a cDNA encoding Cg-TIMP, the first tissue inhibitor of metalloproteinase identified in mollusks. The isolated cDNA encodes a protein of 221 residues that has a domain organization similar to that of vertebrate TIMPs including a signal sequence, and the 12 cysteines characteristic of the TIMP signature. Analysis of Cg-TIMP expression in adult oyster tissues, by Northern blot and in situ hybridization, indicates that Cg-TIMP was only expressed in hemocytes which are the key components of defense mechanisms in mollusks. We also observed that Cg-TIMP mRNA accumulated during shell damage and bacterial challenge. This pattern of expression suggests that Cg-TIMP may be an important factor in wound healing and defense mechanisms.LR: 20061115; PUBM: Print; GENBANK/AF321279; JID: 0155157; 0 (DNA, Complementary); 0 (RNA, Messenger); 0 (TIMP protein, Crassostrea gigas); 0 (Tissue Inhibitor of Metalloproteinases); ppublishSource type: Electronic(1
Subwavelength spinning of particles in vector cosine-Gaussian field with radial polarization
No full textA new type of radially polarized (RP) cosine-Gaussian (CG) field is proposed. Through the analytical model, it is found that such RP CG beam exhibits completely different focusing properties from the reported RP plane waves. More importantly, a stable three-dimensional trap of Rayleigh particle accompanied by a subwavelength spin motion can be easily achieved using this RP CG beam.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.ImPhys/Optic
FIGURE 2 in Two new species of diptilomiopid mites (Acari: Eriophyoidea) from China
No full textFIGURE 2. Catarhinus sanguinalus sp. nov. AD, prodorsal shield; CG, female coxigenital area; em, empodium; GM, external male genitalia; IG, female internal genitalia; L1, leg І; L2, leg 2; PM, dorsal view of telosoma; VM, ventral view of telosoma. Scale bar: 20 μm for AD, PM, VM; 10 μm for L1, L2; 7.5 μm for CG, GM, IG, 5μm for em.Published as part of Xue, Xiao-Feng & Li, Ni, 2020, Two new species of diptilomiopid mites (Acari: Eriophyoidea) from China, pp. 560-570 in Zootaxa 4896 (4) on page 563, DOI: 10.11646/zootaxa.4896.4.7, http://zenodo.org/record/438806
Non-CG methylation patterns shape the epigenetic landscape in Arabidopsis
No full textNon-CG methylation is abundant in plants, but its functions are poorly understood. A new study has uncovered the contributions of each non-CG methyltransferase, including the poorly characterized methyltransferase CMT2, to DNA methylation patterning and gene silencing. The results suggest that non-CG methyltransferases participate in self-reinforcing loop mechanisms with histone H3 K9 methylation and small RNAs to control gene silencing throughout the Arabidopsis genome
FIGURE 1 in Three new species of Calepitrimerus (Acari: Eriophyidae) from China
No full textFIGURE 1. Calepitrimerus liuanense sp. nov. AD, prodorsal shield; CG, female coxigenital area; em, empodium; GM, male external genitalia; IG, female internal genitalia; L1, leg І; L2, leg II; DM, dorsal view of telosoma; VM, ventral view of telosoma. Scale bar: 15 μm for AD, CG, DM, GM, IG, L1, L2, VM; 5 μm for em.Published as part of Xue, Xiao-Feng & Liu, Xin-Yu, 2022, Three new species of Calepitrimerus (Acari: Eriophyidae) from China, pp. 279-292 in Zootaxa 5133 (2) on page 281, DOI: 10.11646/zootaxa.5133.2.8, http://zenodo.org/record/652450
FIGURE 5 in Three new species of Calepitrimerus (Acari: Eriophyidae) from China
No full textFIGURE 5. Calepitrimerus huayanlingense sp. nov. AD, prodorsal shield; CG, female coxigenital area; em, empodium; IG, female internal genitalia; L1, leg І; L2, leg II; DM, dorsal view of telosoma; VM, ventral view of telosoma. Scale bar: 15 μm for AD, CG, DM, IG, L1, L2, VM; 3 μm for em.Published as part of Xue, Xiao-Feng & Liu, Xin-Yu, 2022, Three new species of Calepitrimerus (Acari: Eriophyidae) from China, pp. 279-292 in Zootaxa 5133 (2) on page 287, DOI: 10.11646/zootaxa.5133.2.8, http://zenodo.org/record/652450
FIGURE 2 in Two new species of eriophyid mites (Acari: Eriophyidae) from Malaysia
No full textFIGURE 2. Neodicrothrix grandcaputus sp. nov. (female) D, dorsal view of female; d, divided dorsal pedipalp genual setae d; em, empodium; L1, leg І; L2, leg 2; PM, dorsal view of telosoma; CG, coxigenital area; LO, lateral microtubercles; IG, internal genitalia. Scale bar: 10 μm for D and CG; 5 μm for IG, PM, LO, L1, and L2; 2.5μm for em and d.Published as part of Yuan, Yan-Mei & Xue, Xiao-Feng, 2019, Two new species of eriophyid mites (Acari: Eriophyidae) from Malaysia, pp. 152-160 in Zootaxa 4613 (1) on page 155, DOI: 10.11646/zootaxa.4613.1.8, http://zenodo.org/record/323813
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