Journal articles on the topic 'Lozenge (Shape)'

This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 from the late Pleistocene of Argentina. The fossil specimens were recovered from the Colonia Ayuí and Punta Viracho fossil localities of the El Palmar Formation, located in the middle part of the Uruguay Basin, eastern Argentina. The diagnostic features are: growth ring boundaries demarcated by marginal parenchyma, medium-sized vestured intervessel pits, vessel-ray parenchyma pits similar in size and shape to intervessel pits, vasicentric to lozenge type aliform axial parenchyma, biseriate (70%) and uniseriate (30%) homocellular rays, non-septate and septate fibers, and long chains (10+) of prismatic crystals in chambered axial parenchyma cells. These features suggest a relationship with Peltophorum (Vogel) Benth. (Leguminosae: Caesalpinioideae). The vessel diameter and vessel density of the El Palmar woods are consistent with the temperate-warm, humid-semiarid climate inferred for this region during the late Pleistocene.

This article is dedicated to the interpretation of the header before the text of the Ten Commandments on fol. 150 of the Hval Codex. The author is drawing attention to a gloss in the margin to the left of the banner which has not been addressed in the earlier scholarly literature nor recorded in the facsimile transcription of 1986. The rectangular banner consists of a lozenge net filled with gold lilies while three gold interlace crosses of a complex shape are placed on top of the banner. The gloss next to it was written in blue ink as an abbreviated word under a line. It is a rather common abbreviation from the nomina sacra category (God). The significance of this hitherto-overlooked gloss is extraordinary. It was written in the same manner which was used for adding legends to miniatures or headers in order to clarify images in medieval illuminated manuscripts. Hval wrote similar notes in several margins of this manuscript.The location of the gloss itself points to its function as an explanation of the banner before the words which the Lord communicated to Moses on Mount Sinai. That the text of the Ten Commandments was significant in Bosnian illuminated manuscripts is also attested to by the header before the Ten Commandments in a Venetian miscellany codex, which depicts the narrative scene of the theophany on Sinai while, at the same time, containing a fairly long inscription which clarifies the image. Similar textual clues appear in the Dobrejšovo Evangelie, the most important of which is the one positioned next to the Synaxarion header where the inscription, “this is heaven which is also called paradise”, explains the scene. In the context of such examples, this article discusses analogous material from illuminated manuscripts and monumental painting alike by applying a new approach to the study of function of medieval ornament, while also highlighting the problem of the etymology of the notion of ornament in different languages. The findings resulting from this research show that the function of ornament in a religious context was not just decorative, but that it was used to mark the holiness of a space, that is, the presence of the divinity, which is a phenomenon witnessed in illuminated manuscripts, wall paintings, icons and reliquaries.H. Kessler’s research into Judeo-Christian symbol-paradigms confirms the essential importance of the depiction of the Old Testament tabernacle in the manuscripts of the Christian Topography as a source of ornamental motifs. They can be grouped into a relatively narrow set of symbols, always included in a structural system: star-shaped schemes, fields of flowers, interlace and lozenge nets as well as chequers. Their origin is found in the coffered vaults of classical tombs and temples where they represented the sky and Elysium. They were transported to medieval art through identical motifs which were painted in the catacombs and early Christian basilicas. It is these exampes that constitute a formal template for the header to the Ten Commandments in the Hval Codex the meaning of which is, therefore, a symbolic depiction of the Word, Logos, as the source of God’s Ten Commandments, which is why the banner was marked with a corresponding gloss.The article also pays attention to an unusual illumination in the Gospels of Jakov of Serres because it also witnesses that a grid with floral motifs possessed a special meaning to educated medieval men. The portion above the head of Metropolitan Jakov, formed by a band of a lozenge net with flowers, has been described in the scholarship only as decorative, that is, as forming a floral background, but, given that its position and shape both conform to signifiers of heavenly kingdom in Byzantine manuscripts of the Christian Topography, it is erroneous to interpret it only as a floral background and a mere ornament. In this case too, the lozenge field filled with flowers denotes the Empire of God to which Jakov directs his prayers. Therefore, when one studies ornament in a religious context, it is necessary to use a more precise language, one which is rooted in the manuscript material itself. A concrete evidence for such a practice can also be seen in the colophon of this manuscript because the scribe who wrote it compared all of the decoration in the codex to the starry sky of a theological rather than actual kind.Other notes in the Hval Codex margins are also mentioned in the article. Some of these record the name of the manuscript’s commissioner who was addressed out of respect as uram (Hungarian for “my sire and master”): Hrvoje Vukčić Hrvatinić, Grand Duke of Bosnia and a Herzog of Split. The article emphasizes the need to study more closely the location of glosses and all other marginal notes within the codex, and highlights the fact that the two notes recording the name of the patron were placed next to the Gospel sections describing Christ’s healing miracles which, generally speaking, figure prominently in Christian art and exegesis. Furthermore, the article also analyzes the previously-unpublished illumination which depicts Moses in front of the Burning Bush, the branches of which were rendered as interlace ornament resembling a labyrinth. The rendition of the Burning Bush as interlace stemming from the floral frame of the header is a unique example which demonstrates that medieval art did not consider ornament as a meaningless arabesque but that it frequently functioned as a signifier.

ABSTRACT High-molecular-weight (HMW) penicillin-binding proteins (PBPs) are divided into class A and class B PBPs, which are bifunctional transpeptidases/transglycosylases and monofunctional transpeptidases, respectively. We determined the sequences for the HMW PBP genes of Streptococcus gordonii, a gingivo-dental commensal related to Streptococcus pneumoniae. Five HMW PBPs were identified, including three class A (PBPs 1A, 1B, and 2A) and two class B (PBPs 2B and 2X) PBPs, by homology with those of S. pneumoniae and by radiolabeling with [3H]penicillin. Single and double deletions of each of them were achieved by allelic replacement. All could be deleted, except for PBP 2X, which was essential. Morphological alterations occurred after deletion of PBP 1A (lozenge shape), PBP 2A (separation defect and chaining), and PBP 2B (aberrant septation and premature lysis) but not PBP 1B. The muropeptide cross-link patterns remained similar in all strains, indicating that cross-linkage for one missing PBP could be replaced by others. However, PBP 1A mutants presented shorter glycan chains (by 30%) and a relative decrease (25%) in one monomer stem peptide. Growth rate and viability under aeration, hyperosmolarity, and penicillin exposure were affected primarily in PBP 2B-deleted mutants. In contrast, chain-forming PBP 2A-deleted mutants withstood better aeration, probably because they formed clusters that impaired oxygen diffusion. Double deletion could be generated with any PBP combination and resulted in more-altered mutants. Thus, single deletion of four of the five HMW genes had a detectable effect on the bacterial morphology and/or physiology, and only PBP 1B seemed redundant a priori.

Spillways are the most important structures of large dams that are responsible for releasing the excessive flood discharge from the reservoir. Although many studies have been performed to determine the flow characteristics over these structures, however, the available information on the shockwaves’ characteristics for spillways’ design is limited. The supercritical flow below the chute piers generates an aerated flow known as shockwaves. Due to the flow interaction with the chute piers, three kinds of standing waves just downstream of the pier, in the middle of the chute, and on the sidewalls are generated. This phenomenon affects the flow domain and its hydraulic characteristics along the chute spillway. The height of the waves increases downstream, where they hit the chute walls and reflect again into the flow to interact together again. The process repeated and intensified downstream in a lozenge shape. The height of these waves can be more than twice the depth flow and thus run over the sidewalls. This is important for the design of chute walls in chute spillways with control gates. In this study, the experimental formation of the shockwaves and their behavior along the chute and their reduction measures are presented. Experiments were conducted on a scaled physical model (1/50) of Kheirabad Dam, Water Research Institute, Iran. It was realized that apart from the geometry of piers and chute spillway, Froude number of flow and gate opening are the main effective parameters on the hydraulic performance of shockwaves’ formation and their development on gated spillways.

The relative stability of standard extended dislocation dipoles and some new stable defects with lozenge-shaped cross sections have been numerically estimated. An earlier study of these defects in an isotropic fee structure has been extended to the anisotropic case to assess the effect of anisotropy on the calculations. The study is further extended to the case of the L12 crystal structure of the ordered alloy Ni3Al, where the Burgers vectors are large. Results indicate that the introduction of anisotropy has a small effect in determining the relative stability of extended dislocation faults. The results also show that the large values of the Burgers vectors stabilize the arrays in Ni3Al and that the most stable defect favored is the screw lozenge array LD.

A mathematical model is developed for long peristaltic waves propelling a suspended rigid object down a fluid-filled axisymmetric tube. The fluid flow is described using lubrication theory and the deformation of the tube using linear elasticity. The object is taken to be either an infinitely long rod of constant radius or a parabolic-shaped lozenge of finite length. The system is driven by a radial force imposed on the tube wall that translates at constant speed down the tube axis and with a form chosen to generate a periodic wave train or a solitary wave. These waves exert a traction on the enclosed object, forcing it into motion. Periodic waves drive the infinite rod at a speed that attains a maximum at a moderate forcing amplitude and approaches approximately one quarter of the wave speed in the large-amplitude limit. The finite lozenge can be entrained and driven at the same speed as a solitary wave or periodic wave train if the forcing is sufficiently strong. For weaker forcing, the lozenge is either left behind the solitary wave or interacts repeatedly with the waves in the periodic train to generate stuttering forward progress. The threshold forcing amplitude for entrainment increases weakly with the radial span of the enclosed object, but strongly with the axial length, with entrainment becoming impossible if the object is too long.

The fossil ship-timber beetle, Adamas hukawngensis gen. et sp.n., is described and defined based on one well preserved specimen in mid-Cretaceous amber from the Hukawng Valley in Northern Myanmar. The new species can be readily distinguished from all other extinct and recent members of the family due to the presence of a lozenge-shaped scutellum with a meso-longitudinal groove. Modifications of lymexylid metathoracic wing venation and palaeobiomigratory significance are briefly discussed.

<b><i>Introduction:</i></b> Postoperative pancreatic fistula (POPF) represents the principal determinant of morbidity and mortality after pancreaticoduodenectomy. Since 1994 we have been performing pancreaticogastrostomy with duct-to-mucosa anastomosis (Wirsung-pancreaticogastric anastomosis [WPGA]), but postoperative morbidity, although limited, was still a concern. An original pancreas-transfixing suture technique, named “Blumgart’s anastomosis” (BA), has shown efficacy at reducing fistula rates from pancreaticojejunostomy. Few cohort studies have shown that WPGA with pancreas-transfixing stitches may help reduce the rate of POPF. We designed a novel “Blumgart-type” modification of WPGA (B-WPGA) aiming at harnessing the full potential of the Blumgart design. <b><i>Methods:</i></b> A prospective development study was designed around the application of B-WPGA after pancreaticoduodenectomy for primary periampullary tumors. It focused on describing the early iterations of this technique and on assessing the rate of POPF and delayed post-pancreatectomy hemorrhage (DPH) (primary outcomes), along with other perioperative outcomes. Technically, after mobilizing the pancreatic remnant for a few centimeters, the Wirsung duct is cannulated. A lozenge of seromuscular layer is excised from the posterior gastric wall, matching the shape and size of the pancreas’s cut surface. Two to four transparenchymal pancreatic-to-gastric submucosa U stitches with 4/0 Gore-Tex are positioned cranially and caudally to the Wirsung duct, respectively, mounted on soft clamps, and tied onto the gastric serosa only after duct-to-mucosa anastomosis. Postoperative follow-up was standardized by protocol and included a pancreatic enzyme check on the drain output. <b><i>Results:</i></b> From February 2018 to June 2019, in 15 continuous cases, B-WPGA was performed after pancreaticoduodenectomy. Indications for pancreaticoduodenectomy were mainly ampulla of Vater and pancreatic head adenocarcinomas. There was no operative mortality and no pancreatic anastomosis-related morbidity. Two events (13%) of transiently elevated amylase in the drain fluid, not matching the definition of POPF, were identified in patients with a soft pancreas on postoperative day 2. No DPHs were recorded after a minimum follow-up of 18.6 months. <b><i>Discussion/Conclusion:</i></b> The principles of BA may be safely applied to the WPGA model. B-WPGA allows (1) gentle compression and closure of the small secondary ducts in the pancreatic remnant; (2) partial invagination of the pancreatic body in the gastric wall, with the pancreatic cut surface protected by the gastric submucosa; and (3) prevention of parenchymal fractures, as the pancreaticogastric stitches are tied onto the gastric serosa. Despite the limited number of cases in this study, the absence of mortality and anastomosis-related complications supports further reproduction of this technical variant. Larger studies are necessary to determine its efficacy.

A new species of Tetragonopterus is described from the rio Jari, a tributary to the left margin of rio Amazonas, at the border between Amapá and Pará States, northern Brazil. It is morphologically diagnosed from the other species of the genus (T. argenteus, T. chalceus, and T. rarus new combination) by the lozenge-shaped spot on the caudal peduncle vs. rounded to square spot on the other species. Partial sequences of the mitochondrial gene Cytochrome Oxidase C subunit I, from representatives of all valid species of Tetragonopterus, including this new species, were analyzed. The obtained results revealed a significant genetic distance between the new species and its congeners. A discussion on the new combination, Tetragonopterus rarus, is also provided.

A new survey of Drombeg Stone Circle and accurate analysis of shadow effects beginning at particular sunrises of the calendar year has led to a breakthrough in the understanding of lithic symbolism and the intentions behind the construction of this and other Irish monuments including Knowth and Newgrange that also have astronomical alignments. At Drombeg specific standing stones play critical roles at sunrise for all eight of the festival dates as known traditionally and historically for agricultural communities and as now inferred for prehistoric times following the present observation-based analysis.Crucial for Drombeg in the summer half of the year is the positioning of a tall straight-sided portal stone such that its shadow at midsummer sunrise encounters an engraving on the recumbent stone diametrically opposite. During subsequent minutes the shadow moves away allowing the light of the sun to fall on the carved symbol. It is the same for sunrises at Beltane (May Day), Lughnasadh (Lammas), and the equinoxes when shadows from other perimeter stones achieve the same coupling with the same image, each time soon replaced by sunlight. For the winter half of the year which includes dates for Samhain, the winter solstice and Imbolc, the target stone for shadow reception at sunrise is a huge lozenge-shaped megalith, artificially trimmed. Moreover, for 22 March and 21 September there is notable dramatic action by shadow and light between a precisely positioned narrow pillar stone and the lozenge stone.As a result, at sunrise at Drombeg eight calendrical shadow events have been witnessed and photographed. This attests to the precision of Neolithic planning that determined the stone positions, and demonstrates the antiquity of the calendar dates for these traditional agricultural festivals. Discussion is held as to what the concept of shadow casting between shaped or engraved stones at the time of sunrise may have meant in terms of lithic symbolism for the planners and builders. This leads to a possible explanation in terms of the ancient worldview known as the hieros gamos or the Marriage of the Gods between Sky and Earth.

Astyanax utiariti, new species, is described from the upper rio Tapajós drainage, Mato Grosso, Brazil. Astyanax utiariti has a horizontally oval black humeral spot, a lozenge-shaped caudal-peduncle spot, continuing to the tip of the middle caudal-fin rays, and two brown bars in the humeral region that allows its inclusion in the A. bimaculatus species group. It also possesses a black stripe extending along midlateral body. The new species is distinguished from its congeners by a reticulate scale pattern, a black longitudinal stripe, toothless maxilla, larger dentary teeth and teeth of the inner row of the premaxilla with five to seven cusps, body depth 33.3-39.9% of standard length (SL), head length (HL) 23.9-26.4% of SL, caudal-peduncle depth 12.0-13.4% of SL, orbital diameter 28.5-34.3% of HL, interorbital width 32.7-38.4% of HL, 36-38 perforated scales along the lateral line, and 22-26 branched anal-fin rays.

Up to date, Dielectric Elastomer Actuators (DEA) have been mostly based on either silicone or acrylic elastomers, whereas the potential of DEAs based on inexpensive, wide-spread natural and synthetic rubbers has been scarcely investigated. In this paper, a DEA based on a styrene-based rubber is demonstrated for the first time. Using a Lozenge-Shaped DEA (LS-DEA) layout and following a design procedure previously proposed by the authors, we develop prototypes featuring nearly-zero mechanical stiffness, in spite of the large elastic modulus of styrenic rubber. Stiffness compensation is achieved by simply taking advantage of a biaxial pre-stretching of the rubber DE membrane, with no need for additional stiffness cancellation mechanical elements. In the paper, we present a characterization of the styrene rubber-based LS-DEA in different loading conditions (namely, isopotential, isometric, and isotonic), and we prove that actuation strokes of at least 18% the actuator side length can be achieved, thanks to the proposed stiffness-compensated design.

AbstractThe Weald Basin of SE England is a lozenge shaped accumulation of sediments occuring from Southampton and Winchester in the west to Maidstone and Hastings in the east. It is approximately 150 km long by 60 km wide, covering an area of some 9000 km2 (Fig. 1). Several commercial oil and gas discoveries have been made, mostly on the flanks of the basin. These fields have been in continous production since the early 1980s. Field size in terms of recoverable hydrocarbons is small, 0.5 to 6 MMBBL of oil is typical. Hydrocarbons are produced primarily from the Middle Jurassic Bathonian Great Oolite at Humbly Grove, Herriard, Storrington, Singleton, Stockbridge, Goodworth and Horndean fields but also from the Late Oxfordian-Early Kimmeridgian Corallian Sandstone at Palmers Wood; Portland Sandstone at Brockham and Godley Bridge; Corallian Limestone at Bletchingley; Purbeck Sandstones in Albury and Late Triassic Rhaetic calcarenites in Humbly Grove. Cumulative oil production from the basin as a whole is currently 19.1 MMSTB

Whereas many viruses have capsids of uniquely defined sizes that observe icosahedral symmetry, retrovirus capsids are highly polymorphic. Nevertheless, they may also be described as polyhedral foldings of a fullerene lattice on which the capsid protein (CA) is arrayed. Lacking the high order of symmetry that facilitates the reconstruction of icosahedral capsids from cryo-electron micrographs, the 3D structures of individual retrovirus capsids may be determined by cryo-electron tomography, albeit at lower resolution. Here, we describe computational and graphical methods used to construct polyhedral models that match in size and shape, capsids of Rous sarcoma virus (RSV) observed within intact virions. The capsids fall into several shape classes, including tubes, ‘lozenges’ and ‘coffins’. The extent to which a capsid departs from icosahedral symmetry reflects the irregularity of the distribution of pentamers, which are always 12 in number for a closed polyhedral capsid. The number of geometrically distinct polyhedra grows rapidly with increasing quotas of hexamers, and ranks in the millions for particles in the size range of RSV capsids, which typically have 150–300 hexamers. Unlike the CAs of icosahedral viruses that assume a minimal number of quasi-equivalent conformations equal to the triangulation number (T), retroviral CAs exhibit a near-continuum of quasi-equivalent conformations – a property that may be attributed to the flexible hinge linking the N- and C-terminal domains.

The primary stratigraphic fabric of a chaotic rock unit in the Zermatt Saas ophiolite of the Western Alps was reworked by a polyphase Alpine tectonic deformation. Multiscalar structural criteria demonstrate that this unit was deformed by two ductile subduction-related phases followed by brittle-ductile then brittle deformation. Deformation partitioning operated at various scales, leaving relatively unstrained rock domains preserving internal texture, organization, and composition. During subduction, ductile deformation involved stretching, boudinage, and simultaneous folding of the primary stratigraphic succession. This deformation is particularly well-documented in alternating layers showing contrasting deformation style, such as carbonate-rich rocks and turbiditic serpentinite metasandstones. During collision and exhumation, deformation enhanced the boudinaged horizons and blocks, giving rise to spherical to lozenge-shaped blocks embedded in a carbonate-rich matrix. Structural criteria allow the recognition of two main domains within the chaotic rock unit, one attributable to original broken formations reflecting turbiditic sedimentation, the other ascribable to an original sedimentary mélange. The envisaged geodynamic setting for the formation of the protoliths is the Jurassic Ligurian-Piedmont ocean basin floored by mostly serpentinized peridotites, intensely tectonized by extensional faults that triggered mass transport processes and turbiditic sedimentation.

Most jarlite in the Ivigtut cryolite deposit occurred as cm-sized segregations in fluorite-carrying masses. The conspicuous columnar and radiating aggregates with jarlite occurred only in five places in the quarry. They are composed of mm-wide, dm-long lamellae either in a radiating pattern or in a more or less parallel arrange­ment. The major constituent of the lamellae is jarlite in fan-shaped grains 0.2-1 mm long. They are delineated by seams, a few tenths of a mm wide, of cryptocrystalline topaz and a spherulitic mica which show straight borders towards the jarlite. The lamellae are prismatic bodies with lozenge shaped cross sections showing angles of 70° and 110°, the latter often truncated giving 145°. The faces of the prisms correspond to topaz-coated planes found in the pseudo­cubic mineral cryolite: · pseudo-octahedral and pseudo-dodecahedral. planes. The lamellae are regarded as pseudomorphs after prismatic cleavage bodies of cryolite. The radiating and columnar aggregates formed when Sr-Ba-rich fluids dissolved shattered, topaz-coated cryolite. Simultaneously with the dissolution b0gvadite and strontian barite formed crystals with axes parallel to the crystallographic axes of the former cryolite. The fanshaped/subspherulitic jarlite grains with random orientations formed later, presumably from gel-like masses produced by the total dissolution of the cryolite. The central parts of the radiating aggregates had b0gvadite crystals in an array lined up after the radial directions, in a matrix of micron-sized scales of strontian barite with a kaolin-like mineral. Tangential bands of the spherulitic mica make the central parts, 5-10 cm across, appear as colloform masses formed from a gel.

AbstractCanonite from Alfenza grows as crowded, radiating, acicular aggregates covering bismuthinite crystals. Individual crystals have a lozenge-shaped habit on {010}, the presumed cleavage plane of cannonite. Crystal structure refinements in the P21/c space group of two single crystals led to the following cell parameters: a = 7.7196(5) Å, b = 13.8856(9), c = 5.6980(4), b = 109.174(1)º (R1 = 0.0424); and a = 7.7100(8), b = 13.8717(14), c = 5.6939(6), b = 109.155(2)º (R1 = 0.0438). Hydrogen atoms were also localized in the density-difference Fourier map and refined with soft restraints on the bond distances. Raman and IR spectroscopy confirm the presence of OH groups and the absence of molecular water, and deliver OH···O geometry wholly comparable with the structure refinement. Electron microprobe analyses revealed no significant levels of elements other than those expected in the ideal formula except fluorine which was present up to 0.14 a.p.f.u. The crystal structure can be described in terms of anion-centred OBi4 edge-sharing tetrahedra forming chains running parallel to z and strongly cemented along x by isolated SO4 tetrahedra. Each OBi4 tetrahedron is further connected along y by OH groups, making walls of composition Bi4O2(SO4)2(OH)4 parallel to (010). These walls are tied to each other along y by fewer Bi–O–S bridges and weaker OH···O bonds.

AbstractThe new mineral magnesiocanutite (IMA2016-057), NaMnMg2[AsO4]2[AsO2(OH)2], was found at the Torrecillas mine, Iquique Province, Chile, where it occurs as a secondary phase in association with anhydrite, canutite, halite, lavendulan and magnesiokoritnigite. Magnesiocanutite occurs as pale brownish-pink to rose-pink, lozenge-shaped tablets that are often grouped in tightly intergrown aggregates. The crystal forms are {110} and {102}. Crystals are transparent, with vitreous lustre and white to very pale pink streak. The Mohs hardness is 2½, tenacity is brittle, and the fracture is splintery. Crystals exhibit two perfect cleavages: {010} and {101}. The calculated density is 3.957 g/cm3. Optically, magnesiocanutite is biaxial (+), with α = 1.689(2), β = 1.700(2), γ = 1.730(2) (measured in white light); 2Vmeas. = 64.3(4)°; slight dispersion, r <v; orientation Z = b; X ∧ a = 15° in obtuse angle β. The mineral is slowly soluble in dilute HCl at room temperature. Electron-microprobe analyses, provided Na2O 5.44, CaO 0.26, MgO 8.84, MnO 18.45, CoO 1.47, CuO 2.13, As2O5 59.51, H2O(calc) 2.86, total 98.96 wt.%. Magnesiocanutite is monoclinic, C2/c, a = 12.2514(8), b = 12.4980(9), c = 6.8345(5) Å, β = 113.167(8)°, V = 962.10(13) Å3 and Z = 4. The eight strongest powder X-ray diffraction lines are [dobs Å(I )(hkl)]: 6.25(42)(020), 3.566(43)(310,1̄31), 3.262(96)(1̄12), 3.120(59)(002,131,040,221), 2.787(93)(400,022,041,330), 2.718(100) (4̄21,240,112,402), 2.641(42)(1̄32) and 1.5026(43)(multiple). Magnesiocanutite has a protonated alluaudite-type structure (R1 = 2.59% for 789 Fo > 4σF reflections) and is the Mg analogue of canutite. Using the results of both the microprobe analyses and structure refinement, the structurally based empirical formula is Na(Mn0.78Mg0.22)Σ1.00(Mg1.04Mn0.70Cu0.15Co0.11)Σ2.00[AsO4]2[AsO2(OH)2].

AbstractThe petrographical, crystal-chemical and petrogenetical aspects of rutile rich in antimony (up to 33.75 wt.% Sb2O5; equal to 0.2 Sb5+ per O = 2) from St. Marcel-Praborna in the Aosta Valley, Italy, were re-examined. These compositions occur in two different petrographical environments (within the rock matrix or as microinclusions within Sb-rich titanite) in the manganese concentrations at this locality. The new data confirm our earlier hypothesis that two distinct petrogenetical/crystal-chemical processes both occurred: 1. Sb-metasomatism of pre-existing Sb-free rutile inclusions; and 2. creation of neoblastic Sb-rich rutile by the expulsion of Ti from pre-existing Sb-free titanite being metasomatized by Sb to form Sb-rich titanite. In the literature, Sb in minerals is variably considered as being trivalent and/or pentavalent. This work demonstrates that within rutile it is entirely Sb5+, substituting for Ti4+ by the following heterovalent cation exchange mechanism which is also the dominant one in the host Sb-rich titanite: 2 viR4+ = viR3+ + viR5+, where viR3+ = (Al,Cr,Mn,Fe)3+. A near-perfect correlation of ΣR5+vs. ΣR3+ (r > 0.98) is perturbed only by the presence of trace amounts of Ca2+, Sr2+ and Ba2+. Traces of Mn4+, Si4+ and/or (OH)− might also be present. These alkaline earth cations are the largest cations ever recorded in the rutile structure and are seemingly too large to occupy normal octahedral sites. The cation exchange mechanism involved might be that found in the ‘trirutile’ mineral group: 3 viR4+ = viR2+ + 2 viR5+. Alternatively these large divalent cations may be situated in the lozenge-shaped tunnels of the rutile structure, by analogy with other large cations occupying the wider subrectangular tunnels in the analogous cryptomelane/hollandite/priderite, romanéchite and todorokite mineral groups. This leads to a possible new cation exchange mechanism for the rutile structure: 2 viR4+ + tunelvacant = 2 viR3+ + tunnelR2+.

AbstractThe present study compares the ultrastructure of "dorsal organs" on the anterior, dorsal carapace of the syncarid Anaspides tasmaniae and the crangonid shrimp Crangon crangon. Although the species are not closely related phylogenetically, and the elements of their dorsal organs are arranged differently, they are remarkably similar ultrastructurally. The common elements include an island of thinner epicuticle lying across the aperture of a hole through the surrounding cuticle, squarish in the case of Anaspides, and lozenge shaped in Crangon. This whole area appears to be flexible. At the centre of the thin region is a tabular invagination of cuticle ending blindly in Anaspides and with a pore at the bottom in Crangon. The tube is surrounded by a single large cell with extensive internal membranes and basal vacuoles or vesicles. This part of the organ is not innervated. Four small papillae are disposed about this central region, in quincunx formation in Anaspides, and a pair each side in a row in Crangon. The cuticle thins further over the papillae and the underside is closely associated with four sensory dendrites so that each organ is innervated by a total of sixteen neurons. The four dendrites beneath each papilla have basal bodies and cilliary microtubules typical of mechanosensors. The region close to the tips of the dendrites is surrounded by non-cellular material and the dendrites are separated from each other by a series of sheath cells. On the basis of this similarity, and because the relationship between these elements, as evidenced by studies of the external structure across a wide range of taxa, is strongly conserved, we propose that the organs described here belong to a particular class of "dorsal organs" which we call sensory dorsal organs (of Laverack). On the basis of the ultrastructure, and the conservation of the proximity of

The doves and pigeons constitute a taxonomic group (Columbiformes: Columbidae) of granivorous and frugivorous birds with a worldwide distribution. The current work aims to describe morphologically and molecularly a new protozoan from white-tipped doves Leptotila verreauxi Bonaparte, 1855 and grey-fronted doves Leptotila rufaxilla (Richard & Bernard, 1792) in Southeastern Brazil. Eimeria ferreirai n. sp. has oocysts that are sub-spherical to ellipsoidal, 21.4 × 18.8 μm, with smooth, bilayered wall, ~1.6 μm thick. Micropyle present. Oocyst residuum absent, but one to two polar granules are present. Sporocysts are elongate ovoidal to boomerang-shaped, 13.4 × 6.9 μm. Stieda body triangular to lozengal. Sporocyst residuum is composed of granules of different sizes. Sporozoites are vermiform with refractile body and nucleus. Sequencing of the mitochondrial cytochrome c oxidase subunit 1 (COI) gene and the subsequent phylogenetic molecular comparisons supported the description of the new species, since the maximum similarity was 90-95% with eimeriid species of Columbiformes, Anseriformes, Galliformes and Passeriformes. Thus, this is the first coccidian species reported from Leptotila spp. and the twentieth description of an eimerian from Columbiformes in the World.

The formation and differentiation of the continental crust occurs at convergent plate margins in accretionary and collisional orogenic belts where sufficient heat is generated to achieve high-grade metamorphism and anatexis. Volumetrically significant H2O-present melting requires an influx of aqueous fluid along zones of high-strain deformation or via fracture networks, or recycling of the fluid dissolved in melt via melt migration and fluid exsolution during crystallization. In contrast, in “dry” crust, melting occurs via hydrate-breakdown melting reactions at higher temperatures than H2O-present melting; volumetrically significant melt production requires temperatures above ∼800 °C. Melting wets residual grains, and anatectic crust becomes porous at a few vol.% melt. Feedback between deformation and melting creates a dynamic rheological environment; as melt volume increases to the melt connectivity transition, which varies but is around 7 vol.% (see discussion later in the text), melt may escape from the source in the first of several melt-loss events with increasing temperature. Major and accessory phase controls on melt production and melt composition for different pressure–temperature–time paths are evaluated using calculated phase equilibria for average pelite. The pristine to slightly retrogressed condition of peritectic minerals in residual crust requires significant loss of melt from the system. The consequences of melt loss are evaluated here. In residual crust, evidence of melt at the grain scale may be preserved in microstructures, whereas evidence of melt extraction pathways at outcrop scale is recorded by leucosome networks. Strain and anisotropy of permeability control the form of mesoscale melt channels with strong anisotropy promoting high-melt focusing. The sequence of structures observed in nature records a transition from storage to drainage; focused melt flow occurs by dilatant shear failure of low-melt-fraction rocks, leading to the formation of networks of channels that allow accumulation and storage of melt and that form the link for melt flow from grain boundaries to ascent conduits. Melt ascent is via ductile-to-brittle fracture; ductile fractures may propagate along foliation as sills or from dilation or shear bands as dikes. Emplacement of horizontal tabular and wedge-shaped plutons occurs around the brittle–ductile transition zone, whereas vertical lozenge-shaped plutons represent crystallization of magma in the ascent conduit. Blobby plutons form by lateral expansion in the ascent conduit localized by thermal or mechanical instabilities.

A discrete Gelfand–Tsetlin pattern is a configuration of particles in ℤ2. The particles are arranged in a finite number of consecutive rows, numbered from the bottom. There is one particle on the first row, two particles on the second row, three particles on the third row, etc., and particles on adjacent rows satisfy an interlacing constraint. We consider the uniform probability measure on the set of all discrete Gelfand–Tsetlin patterns of a fixed size where the particles on the top row are in deterministic positions. This measure arises naturally as an equivalent description of the uniform probability measure on the set of all tilings of certain polygons with lozenges. We prove a determinantal structure, and calculate the correlation kernel. We consider the asymptotic behavior of the system as the size increases under the assumption that the empirical distribution of the deterministic particles on the top row converges weakly. We consider the asymptotic "shape" of such systems. We provide parameterizations of the asymptotic boundaries and investigate the local geometric properties of the resulting curves. We show that the boundary can be partitioned into natural sections which are determined by the behavior of the roots of a function related to the correlation kernel. This paper should be regarded as a companion piece to the paper [E. Duse and A. Metcalfe, Asymptotic geometry of discrete interlaced patterns: Part II, in preparation], in which we resolve some of the remaining issues. Both of these papers serve as background material for the papers [E. Duse and A. Metcalfe, Universal edge fluctuations of discrete interlaced particle systems, in preparation; E. Duse and K. Johansson and A. Metcalfe, Cusp Airy process of discrete interlaced particle systems, in preparation], in which we examine the edge asymptotic behavior.

AbstractEight new species of Pyrenulaceae are described as new to science from Brazil, Guyana and Puerto Rico. Pyrenula sanguineomeandrata Aptroot & Mercado Diaz (with a thallus with red, KOH+ purple pigmentation of lines or a reticulum, simple ascomata with vertical ostioles, a deep red inspersed, KOH+ orange hamathecium, and dark brown 3-septate ascospores 25–29×10–12 μm) and P. sanguineostiolata Aptroot & Mercado Diaz (with a thallus with deeply immersed simple ascomata with vertical ostioles, which are superficial and bright red, and 3-septate ascospores 25–28×9–12 μm) are described from submontane evergreen forests in Puerto Rico. Pyrenula biseptata Aptroot & M. Cáceres (with simple ascomata with vertical ostioles, an inspersed hamathecium and 2-septate ascospores 11–12×4·5–5·0 μm) and P. xanthinspersa Aptroot & M. Cáceres (with an ecorticate thallus containing lichexanthone, simple ascomata with vertical ostioles, not inspersed hamathecium and 3-septate ascospores 14–17×6·0–7·5 μm) are described from rainforest in Amazonian Brazil. Pyrenula subvariabilis Aptroot & Sipman (with fused ascomata with lateral ostioles and submuriform ascospores 17–20(–25)×6–9 μm) and Sulcopyrenula biseriata Aptroot & Sipman (with a thallus containing lichexanthone, simple ascomata with lateral ostioles and lozenge-shaped ascospores with 8 locules, (13–)15–17(–20)×8–10 (width)×6–7 (thickness) μm) are described from savannahs in Guyana. Special attention is paid to the genus Pyrgillus: two new species from the 3-septate core group of this small genus are described from Brazil, viz. P. aurantiacus Aptroot & M. Cáceres (with a corticate thallus containing lichexanthone, mazaedium with orange, KOH+ violet, UV+ red pruina and ascospores of 13–16×6·0–7·5 μm) and P. rufus Aptroot & M. Cáceres (with a corticate thallus containing lichexanthone, mazaedium with dark red, KOH+ orange, UV+ red pruina and ascospores of 15·0–17·5×5·0–6·5 μm). An updated key to the 3-septate species of Pyrgillus is provided.

In the Bousquet mining district, metamorphosed volcanic rocks of the Blake River Group (BRG) exhibit discrete strain features resulting from three generations of structures—D1, D2, and D3. Deformation D1 formed an east–west-trending, subvertical, penetrative schistosity that is coplanar with the axial plane of associated folds. This foliation contains a linear fabric plunging steeply westward, and mineral lineations are subparallel to fold axes and to intersection lineations.Defomations D2 and D3 formed a crenulation cleavage and a set of conjugate kink bands, respectively. The cleavage is oriented east–northeast, and the kink bands are oriented northeast–southwest and northwest–southeast. Both deformations distorted earlier-formed structures to a minor extent. A conjugate set of minor strike-slip faults with orientations similar to the kinks are the youngest structures found in BRG rocks.The volcanic sequence is composed of two lithotectonic domains juxtaposed along fault-related contacts. Each domain exhibits distinctive strain features attributed mainly to a broad network of anastomosing faults. This network of faults disrupted strata and destroyed many internal stratigraphic features, especially in domain 2; it relates to late stages of D1.Domain 1, occupying the northern half of the BRG in the mine area, represents a zone of weakly sheared tholeiitic basalts 750 m thick and is overlain by 150 m of felsic volcaniclastic rocks. Primary textures and structures indicate that this domain forms a south-facing homoclinal succession.Domain 2 is characterized by a strongly strained, 500 m wide belt of anastomosing faults adjacent to the southern margin of domain 1. Narrow bands of schist, mylonite, and phyllonite straddle fault zones and surround less-deformed, lozenge-shaped blocks of metamorphosed volcanic and (or) volcaniclastic rocks.The lack of syngenetic structures and textures, together with intense faulting and transposition, restricts stratigraphic correlations throughout the BRG as well as correlations between this volcanic succession and the adjacent sedimentary units. Structural evidence presented here complicates the original stratigraphic scheme commonly applied to volcano-sedimentary assemblages in the Rouyn–Val D'Or area. It is proposed that faulting is responsible for the spatial distribution of lithologies previously interpreted as resulting from folding phenomena in the Bousquet mining district. Gold mineralization is concentrated in bands of deformed rocks in the fault zones of domain 2 at the Bousquet mine.

The Bousquet gold deposits are structurally controlled, disseminated and vein type lodes located within a 500 m wide anastomosing deformation zone. Ore is located within narrow zones of high strain surrounded by lozenge-shaped panels of less-deformed rock. Strain characteristics are those of the bulk inhomogeneous flattening style. Ore lenses are spatially related to highly sheared, fractured, and altered mafic and felsic volcanic and volcaniclastic rocks of contrasting rheologic properties. Deformation features can be ascribed to multistage progressive ductile → brittle deformation. Strain markers and kinematic indicators show that the principal displacement within the deformation zone was reverse faulting with a minor sinistral throw. A structural analysis demonstrates that the deformation responsible for the development of a pervasive regional foliation, brittle fractures, and oblique reverse faults can be attributed to a north–south compression.Metamorphic minerals such as andalusite, kyanite, garnet, biotite, chlorite, chloritoid, and calcic plagioclases indicate that upper greenschist metamorphism was attained locally within the ductile deformation zones. Subsequent pervasive retrograde alteration, including carbonatization and hydration of silicates to white mica and chlorite, suggests an important period of hydrothermal activity after peak metamorphism. Native gold is typically closely associated with pyrite and with these hydrothermal assemblages and was probably channelled into ductile and brittle structural zones prior to and after peak metamorphism.Two principal types of steeply dipping auriferous sulphide veins are present in the mine: foliation-oblique veins and foliation-parallel veins. Foliation-oblique veins occur within steeply dipping conjugate shear fractures spatially related to competent protoliths. The main set was emplaced during late stages of the regional tectonic deformation, after the initial development of a pervasive regional foliation and before the end of the progressive deformation. Foliation-parallel veins are located within openings created by decoupling schistosity laminae or by overriding of irregular surfaces such as fault planes and shear zones. These veins are relatively younger and less deformed than the foliation-oblique veins.Pervasive pyritic disseminations along foliation surfaces are earliest and synchronous with the development of foliation and probably continued throughout the progressive deformation. Early disseminated sulphides may also have been remobilized by pressure solution into later vein systems.

International audience We study tilings with lozenges of a domain with free boundary conditions on one side. These correspondto boxed symmetric plane partitions. We show that the positions of the horizontal lozenges near the left flatboundary, in the limit, have the same joint distribution as the eigenvalues from a Gaussian Unitary Ensemble (theGUE-corners/minors process). We also prove the existence of a limit shape of the height function (the symmetricplane partition). We also consider domains where the sides converge to $\infty$ at different rates and recover again theGUE-corners process. Nous étudions les pavages par losanges d’un domaine dont le bord vertical est “libre”. Nous montrons queles positions des losanges horizontaux proches du bord gauche ont la même distribution que les valeurs propres del’ensemble gaussien unitaire. Nous montrons aussi l’existence d’une limite de la forme de la fonction de hauteur (unepartition plane symétrique). Nous considérons aussi des domaines ou des bords différents convergent vers $\infty$ destaux différents et nous retrouvons nouveau les processus EGU au bord.

International audience We study random lozenge tilings of a certain shape in the plane called the Novak half-hexagon, and compute the correlation functions for this process. This model was introduced by Nordenstam and Young (2011) and has many intriguing similarities with a more well-studied model, domino tilings of the Aztec diamond. The most difficult step in the present paper is to compute the inverse of the matrix whose (i,j)-entry is the binomial coefficient $C(A, B_j-i)$ for indeterminate variables $A$ and $B_1, \dots , B_n.$ Nous étudions des pavages aléatoires d'une region dans le plan par des losanges qui s'appelle le demi-hexagone de Novak et nous calculons les corrélations de ce processus. Ce modèle a été introduit par Nordenstam et Young (2011) et a plusieurs similarités des pavages aléatoires d'un diamant aztèque par des dominos. La partie la plus difficile de cet article est le calcul de l'inverse d'une matrice ou l’élément (i,j) est le coefficient binomial $C(B_j-i, A)$ pour des variables $A$ et $B_1, \dots , B_n$ indéterminés.

Changes in the intensity of the fluorescence of suspensions of emulsion-grade polytetrafluoroethylene have been measured under the influence of pulsed electric fields. Two types of polymer sample were studied. The first consisted of suspensions of the usual lozenge-shaped particles, and the second had some 16% of elongated rod-like particles in addition to the lozenges. When tagged severally with four different dyes to give variable coloured emission under polarized ultraviolet light, significant electrofluorescent effects were recorded. The study indicates that suitably oriented tagged-rod particles exhibit extremely high contrast between perpendicularly polarized fluorescent states and are a potential medium for display devices. The data are consistent with the model that, within the rod particles, the polymer molecules are aligned essentially parallel to the rod axes and that the lozenges consist of folded rod structures.

It is well-known that plane partitions, lozenge tilings of a hexagon, perfect matchings on a honeycomb graph, and families of non-intersecting lattice paths in a hexagon are all in bijection. In this work we consider regions that are more general than hexagons. They are obtained by further removing upward-pointing triangles. We call the resulting shapes triangular regions. We establish signed versions of the latter three bijections for triangular regions. We first investigate the tileability of triangular regions by lozenges. Then we use perfect matchings and families of non-intersecting lattice paths to define two signs of a lozenge tiling. Using a new method that we call resolution of a puncture, we show that the two signs are in fact equivalent. As a consequence, we obtain the equality of determinants, up to sign, that enumerate signed perfect matchings and signed families of lattice paths of a triangular region, respectively. We also describe triangular regions, for which the signed enumerations agree with the unsigned enumerations.

The abductor digiti quinti flap for thumb hypoplasia has been used in its muscular variant as musculocutaneous flap. Several authors have reported myocutaneous branches in the proximal hypothenar region which would vascularize the skin segment covering the hypothenar muscles. Nevertheless, the presence of a cutaneous branch deep palmar artery (CBDPA) vascularizing the proximal hypothenar territory and possibly responsible for the proximal hypothenar cutaneous vascularization was reported. In this paper, a fasciocutaneous hypothenar flap was designed, based on the CBDPA, transposed to the wrist anterior region for the treatment of a post burn contracture which was limiting the wrist extension. Its viability was assessed. The flap had a lozenge-shaped design from the cutaneous fold of the wrist to the fifth metacarpophalangeal joint over the abductor digiti quinti muscle. It was dissected in the fasciocutaneous plane to a width of 20 mm. The adipose tissue zone 10 mm distal to the pisiform was preserved, as well as the ulnar nerve sensory branch crossing the flap longitudinally. The flap was transposed to the anterior fold of the wrist. Neither the flap nor the donor site underwent complications. The patient improved wrist extension without referring any discomfort. Sensitivity was 8 mm 2 months after surgery compared to 6 mm within the preoperative period. In conclusion, it is possible to develop a proximal fasciocutaneous hypothenar flap based on CBDPA involving the proximal and distal hypothenar territory.

AbstractIron remains show the corrosion behavior of metal materials over a long term while buried in the soil. The data provide useful information in the study of the stability of overpack (carbon steel) under geological disposal conditions. And they also provide important information for the conservation science of important items of cultural heritage. There are two major microbial influences on the metal material surface : corrosion caused by microbes (microbially influenced corrosion, MIC) ; and mineralization by microbes (biomineralization). To observe these two roles, an iron reducing bacteria was cultured in a liquid medium with carbon steel and detection of corroded products were carried out by XRD method in this study.Iron reducing bacteria was cultured under static conditions for 41 days with carbon steel. The result showed that a complex (biofilm, bacteria, etc.) was generated by the bacteria and covered the surface of the carbon steel. By using a microscope, the corrosion product was revealed to be formed of green and white crystal, or needle-shaped product and lozenge crystal by SEM observation. The green crystal was vivianite (Fe2+3(PO4)2・8H2O) measuring 50˜250 μm. In a corrosion process of an iron material surface, iron ion Fe2+ is dissolved from the iron in a cathode reaction, and generates Fe3+ oxide as corrosion product. It appears that vivianite can be also generated as corrosion product in an environment rich in Fe2+ and phosphate by activity of an iron reducing bacteria. Some data on the morphological feature of these corrosion products were obtained.

This paper studies the features of the circle of Willis and cerebral aneurysm in patients with cerebral aneurysms through films of Multi-slice Computed Tomography (MSCT) at the Department of Radiology, Bach Mai Hospital, from March 2017 to March 2018. The study results show that female/male ratio was 2.37: 1; the number of patients with only one aneurysm accounted for 90.68%; Saccular aneurysm was more common than lozenge-shaped aneurysm; the rate of aneurysm ruptures was 82.35%; the bulge was mainly distributed in the carotid artery (94.6%). The very small bulge (less than 3mm) and the small bulge (3-7mm) were most common and accounted for 33.33% and 49.62%, respectively. The variations of the circle of Willis were very diverse and complex, including 13 forms, four of which were the circle of Willis anterior part variants and nine transformations were the circle of Willis posterior variants. Abnormalities (aplasia, hypoplasia) of the anterior communicating arterial were 8.48% and abnormalities of the posterior communicating arterial were 82.6%. The paper concludes that the abnormal anatomical variations in the circle of Willis can facilitate the early diagnosis and treatment of cerebral aneurysm disease.
 Keywords
 Circle of Willis, cerebral aneurysm, MSCT.
 References
 [1] C.S. Hee, L.J. Ye, R.K. Hwa, et al. Diagnosis of Cerebral Aneurysm Via Magnetic Resonance Angiography Screening: Emphasis on Legal Responsibility Increases False Positive Rate, Neurointervention 13(1) (2018) 48-53. [2] T.A. Tuan, Research the value of the diagnosis of cerebral aneurysm by 64 slices computer tomography, Graduate thesis in resident doctor, Hanoi Medical University, 2008 (in Vietnamese).[3] M.W. Son, J.W. Park, K.J. Park, et al, Prognostic Factors of Clinical Outcome after Aneurysmal Clipping in the Aged Patients with Unruptured Intracranial Aneurysm, Journal of Neurointensive Care 3(1) (2020) 20-25. [4] H.M. Tu, N.X. Khoa, Study on the anatomical changes of the cerebral arteries on the MSCT 64 imaging, Thesis Master of Medicine, Hanoi Medical University, 2012 (in Vietnamese).[5] Z. Molnar, W. Thomas (1621-1675), the founder of clinical neuroscience, Nat Rev Neurosci 5(4) (2004) 329-335. [6] Q. Li, J. Li, F. Lv, et al., A multidetector CT angiography study of variations in the circle of Willis in a Chinese population, J Clin Neurosci. 18(3) (2011) 379–383.[7] A. Karatas, G. Coban, C. Cinar, et al., Assessment of the Circle of Willis with Cranial Tomography Angiography, ed Sci Monit. 21 (2015) 2647–2652, [8] S.A. Gunnel, M.S. Farooqui, R.N. Wabale, Anatomical variations of the circulus arteriosus in cadaveric human brains, Neurol Res Int.: 687281, http://doi.org/10.1155/2014/687281, indexed in Pubmed: 24891951 (2014).[9] I.Ö. Yeniçeri, Circle of Willis variations and artery diameter measurements in the Turkish population, Via Medica 76 (3) (2017) 420–425.

The academic journal is obsolete. In a world where there are more titles than ever, this is a comment on their form – especially the print journal – rather than their quantity. Now that you can get everything online, it doesn’t really matter what journal a paper appears in; certainly it doesn’t matter what’s in the same issue. The experience of a journal is rapidly obsolescing, for both editors and readers. I’m obviously not the first person to notice this (see, for instance, "Scholarly Communication"; "Transforming Scholarly Communication"; Houghton; Policy Perspectives; Teute), but I do have a personal stake in the process. For if the journal is obsolete then it follows that the editor is obsolete, and I am the editor of the International Journal of Cultural Studies. I founded the IJCS and have been sole editor ever since. Next year will see the fiftieth issue. So far, I have been responsible for over 280 published articles – over 2.25 million words of other people’s scholarship … and counting. We won’t say anything about the words that did not get published, except that the IJCS rejection rate is currently 87 per cent. Perhaps the first point that needs to be made, then, is that obsolescence does not imply lack of success. By any standard the IJCS is a successful journal, and getting more so. It has recently been assessed as a top-rating A* journal in the Australian Research Council’s journal rankings for ERA (Excellence in Research for Australia), the newly activated research assessment exercise. (In case you’re wondering, M/C Journal is rated B.) The ARC says of the ranking exercise: ‘The lists are a result of consultations with the sector and rigorous review by leading researchers and the ARC.’ The ARC definition of an A* journal is given as: Typically an A* journal would be one of the best in its field or subfield in which to publish and would typically cover the entire field/ subfield. Virtually all papers they publish will be of very high quality. These are journals where most of the work is important (it will really shape the field) and where researchers boast about getting accepted.Acceptance rates would typically be low and the editorial board would be dominated by field leaders, including many from top institutions. (Appendix I, p. 21; and see p. 4.)Talking of boasting, I love to prate about the excellent people we’ve published in the IJCS. We have introduced new talent to the field, and we have published new work by some of its pioneers – including Richard Hoggart and Stuart Hall. We’ve also published – among many others – Sara Ahmed, Mohammad Amouzadeh, Tony Bennett, Goran Bolin, Charlotte Brunsdon, William Boddy, Nico Carpentier, Stephen Coleman, Nick Couldry, Sean Cubitt, Michael Curtin, Daniel Dayan, Ben Dibley, Stephanie Hemelryk Donald, John Frow, Elfriede Fursich, Christine Geraghty, Mark Gibson, Paul Gilroy, Faye Ginsberg, Jonathan Gray, Lawrence Grossberg, Judith Halberstam, Hanno Hardt, Gay Hawkins, Joke Hermes, Su Holmes, Desmond Hui, Fred Inglis, Henry Jenkins, Deborah Jermyn, Ariel Heryanto, Elihu Katz, Senator Rod Kemp (Australian government minister), Youna Kim, Agnes Ku, Richard E. Lee, Jeff Lewis, David Lodge (the novelist), Knut Lundby, Eric Ma, Anna McCarthy, Divya McMillin, Antonio Menendez-Alarcon, Toby Miller, Joe Moran, Chris Norris, John Quiggin, Chris Rojek, Jane Roscoe, Jeffrey Sconce, Lynn Spigel, John Storey, Su Tong, the late Sako Takeshi, Sue Turnbull, Graeme Turner, William Uricchio, José van Dijck, Georgette Wang, Jing Wang, Elizabeth Wilson, Janice Winship, Handel Wright, Wu Jing, Wu Qidi (Chinese Vice-Minister of Education), Emilie Yueh-Yu Yeh, Robert Young and Zhao Bin. As this partial list makes clear, as well as publishing the top ‘hegemons’ we also publish work pointing in new directions, including papers from neighbouring disciplines such as anthropology, area studies, economics, education, feminism, history, literary studies, philosophy, political science, and sociology. We have sought to represent neglected regions, especially Chinese cultural studies, which has grown strongly during the past decade. And for quite a few up-and-coming scholars we’ve been the proud host of their first international publication. The IJCS was first published in 1998, already well into the internet era, but it was print-only at that time. Since then, all content, from volume 1:1 onwards, has been digitised and is available online (although vol 1:2 is unaccountably missing). The publishers, Sage Publications Ltd, London, have steadily added online functionality, so that now libraries can get the journal in various packages, including offering this title among many others in online-only bundles, and individuals can purchase single articles online. Thus, in addition to institutional and individual subscriptions, which remain the core business of the journal, income is derived by the publisher from multi-site licensing, incremental consortial sales income, single- and back-issue sales (print), pay-per-view, and deep back file sales (electronic). So what’s obsolete about it? In that boasting paragraph of mine (above), about what wonderful authors we’ve published, lies one of the seeds of obsolescence. For now that it is available online, ‘users’ (no longer ‘readers’!) can search for what they want and ignore the journal as such altogether. This is presumably how most active researchers experience any journal – they are looking for articles (or less: quotations; data; references) relevant to a given topic, literature review, thesis etc. They encounter a journal online through its ‘content’ rather than its ‘form.’ The latter is irrelevant to them, and may as well not exist. The Cover Some losses are associated with this change. First is the loss of the front cover. Now you, dear reader, scrolling through this article online, might well complain, why all the fuss about covers? Internet-generation journals don’t have covers, so all of the work that goes into them to establish the brand, the identity and even the ‘affect’ of a journal is now, well, obsolete. So let me just remind you of what’s at stake. Editors, designers and publishers all take a good deal of trouble over covers, since they are the point of intersection of editorial, design and marketing priorities. Thus, the IJCS cover contains the only ‘content’ of the journal for which we pay a fee to designers and photographers (usually the publisher pays, but in one case I did). Like any other cover, ours has three main elements: title, colour and image. Thought goes into every detail. Title I won’t say anything about the journal’s title as such, except that it was the result of protracted discussions (I suggested Terra Nullius at one point, but Sage weren’t having any of that). The present concern is with how a title looks on a cover. Our title-typeface is Frutiger. Originally designed by Adrian Frutiger for Charles de Gaulle Airport in Paris, it is suitably international, being used for the corporate identity of the UK National Health Service, Telefónica O2, the Royal Navy, the London School of Economics , the Canadian Broadcasting Corporation, the Conservative Party of Canada, Banco Bradesco of Brazil, the Finnish Defence Forces and on road signs in Switzerland (Wikipedia, "Frutiger"). Frutiger is legible, informal, and reads well in small copy. Sage’s designer and I corresponded on which of the words in our cumbersome name were most important, agreeing that ‘international’ combined with ‘cultural’ is the USP (Unique Selling Point) of the journal, so they should be picked out (in bold small-caps) from the rest of the title, which the designer presented in a variety of Frutiger fonts (regular, italic, and reversed – white on black), presumably to signify the dynamism and diversity of our content. The word ‘studies’ appears on a lozenge-shaped cartouche that is also used as a design element throughout the journal, for bullet points, titles and keywords. Colour We used to change this every two years, but since volume 7 it has stabilised with the distinctive Pantone 247, ‘new fuchsia.’ This colour arose from my own environment at QUT, where it was chosen (by me) for the new Creative Industries Faculty’s academic gowns and hoods, and thence as a detailing colour for the otherwise monochrome Creative Industries Precinct buildings. There’s a lot of it around my office, including on the wall and the furniture. New Fuchsia is – we are frequently told – a somewhat ‘girly’ colour, especially when contrasted with the Business Faculty’s blue or Law’s silver; its similarity to the Girlfriend/Dolly palette does introduce a mild ‘politics of prestige’ element, since it is determinedly pop culture, feminised, and non-canonical. Image Right at the start, the IJCS set out to signal its difference from other journals. At that time, all Sage journals had calligraphic colours – but I was insistent that we needed a photograph (I have ‘form’ in this respect: in 1985 I changed the cover of the Australian Journal of Cultural Studies from a line drawing (albeit by Sydney Nolan) to a photograph; and I co-designed the photo-cover of Cultural Studies in 1987). For IJCS I knew which photo I wanted, and Sage went along with the choice. I explained it in the launch issue’s editorial (Hartley, "Editorial"). That original picture, a goanna on a cattle grid in the outback, by Australian photographer Grant Hobson, lasted ten years. Since volume 11 – in time for our second decade – the goanna has been replaced with a picture by Italian-based photographer Patrick Nicholas, called ‘Reality’ (Hartley, "Cover Narrative"). We have also used two other photos as cover images, once each. They are: Daniel Meadows’s 1974 ‘Karen & Barbara’ (Hartley, "Who"); and a 1962 portrait of Richard Hoggart from the National Portrait Gallery in London (Owen & Hartley 2007). The choice of picture has involved intense – sometimes very tense – negotiations with Sage. Most recently, they were adamant the Daniel Meadows picture, which I wanted to use as the long-term replacement of the goanna, was too ‘English’ and they would not accept it. We exchanged rather sharp words before compromising. There’s no need to rehearse the dispute here; the point is that both sides, publisher and editor, felt that vital interests were at stake in the choice of a cover-image. Was it too obscure; too Australian; too English; too provocative (the current cover features, albeit in the deep background, a TV screen-shot of a topless Italian game-show contestant)? Running Order Beyond the cover, the next obsolete feature of a journal is the running order of articles. Obviously what goes in the journal is contingent upon what has been submitted and what is ready at a given time, so this is a creative role within a very limited context, which is what makes it pleasurable. Out of a limited number of available papers, a choice must be made about which one goes first, what order the other papers should follow, and which ones must be held over to the next issue. The first priority is to choose the lead article: like the ‘first face’ in a fashion show (if you don’t know what I mean by that, see FTV.com. It sets the look, the tone, and the standard for the issue. I always choose articles I like for this slot. It sends a message to the field – look at this! Next comes the running order. We have about six articles per issue. It is important to maintain the IJCS’s international mix, so I check for the country of origin, or failing that (since so many articles come from Anglosphere countries like the USA, UK and Australia), the location of the analysis. Attention also has to be paid to the gender balance among authors, and to the mix of senior and emergent scholars. Sometimes a weak article needs to be ‘hammocked’ between two good ones (these are relative terms – everything published in the IJCS is of a high scholarly standard). And we need to think about disciplinary mix, so as not to let the journal stray too far towards one particular methodological domain. Running order is thus a statement about the field – the disciplinary domain – rather than about an individual paper. It is a proposition about how different voices connect together in some sort of disciplinary syntax. One might even claim that the combination of cover and running order is a last vestige of collegiate collectivism in an era of competitive academic individualism. Now all that matters is the individual paper and author; the ‘currency’ is tenure, promotion and research metrics, not relations among peers. The running order is obsolete. Special Issues An extreme version of running order is the special issue. The IJCS has regularly published these; they are devoted to field-shaping initiatives, as follows: Title Editor(s) Issue Date Radiocracy: Radio, Development and Democracy Amanda Hopkinson, Jo Tacchi 3.2 2000 Television and Cultural Studies Graeme Turner 4.4 2001 Cultural Studies and Education Karl Maton, Handel Wright 5.4 2002 Re-Imagining Communities Sara Ahmed, Anne-Marie Fortier 6.3 2003 The New Economy, Creativity and Consumption John Hartley 7.1 2004 Creative Industries and Innovation in China Michael Keane, John Hartley 9.3 2006 The Uses of Richard Hoggart Sue Owen, John Hartley 10.1 2007 A Cultural History of Celebrity Liz Barry 11.3 2008 Caribbean Media Worlds Anna Pertierra, Heather Horst 12.2 2009 Co-Creative Labour Mark Deuze, John Banks 12.5 2009 It’s obvious that special issues have a place in disciplinary innovation – they can draw attention in a timely manner to new problems, neglected regions, or innovative approaches, and thus they advance the field. They are indispensible. But because of online publication, readers are not held to the ‘project’ of a special issue and can pick and choose whatever they want. And because of the peculiarities of research assessment exercises, editing special issues doesn’t count as research output. The incentive to do them is to that extent reduced, and some universities are quite heavy-handed about letting academics ‘waste’ time on activities that don’t produce ‘metrics.’ The special issue is therefore threatened with obsolescence too. Refereeing In many top-rating journals, the human side of refereeing is becoming obsolete. Increasingly this labour-intensive chore is automated and the labour is technologically outsourced from editors and publishers to authors and referees. You have to log on to some website and follow prompts in order to contribute both papers and the assessment of papers; interactions with editors are minimal. At the IJCS the process is still handled by humans – namely, journal administrator Tina Horton and me. We spend a lot of time checking how papers are faring, from trying to find the right referees through to getting the comments and then the author’s revisions completed in time for a paper to be scheduled into an issue. The volume of email correspondence is considerable. We get to know authors and referees. So we maintain a sense of an interactive and conversational community, albeit by correspondence rather than face to face. Doubtless, sooner or later, there will be a depersonalised Text Management System. But in the meantime we cling to the romantic notion that we are involved in refereeing for the sake of the field, for raising the standard of scholarship, for building a globally dispersed virtual college of cultural studies, and for giving everyone – from unfavoured countries and neglected regions to famous professors in old-money universities – the same chance to get their research published. In fact, these are largely delusional ideals, for as everyone knows, refereeing is part of the political economy of publicly-funded research. It’s about academic credentials, tenure and promotion for the individual, and about measurable research metrics for the academic organisation or funding agency (Hartley, "Death"). The IJCS has no choice but to participate: we do what is required to qualify as a ‘double-blind refereed journal’ because that is the only way to maintain repute, and thence the flow of submissions, not to mention subscriptions, without which there would be no journal. As with journals themselves, which proliferate even as the print form becomes obsolete, so refereeing is burgeoning as a practice. It’s almost an industry, even though the currency is not money but time: part gift-economy; part attention-economy; partly the payment of dues to the suzerain funding agencies. But refereeing is becoming obsolete in the sense of gathering an ‘imagined community’ of people one might expect to know personally around a particular enterprise. The process of dispersal and anonymisation of the field is exacerbated by blind refereeing, which we do because we must. This is suited to a scientific domain of objective knowledge, but everyone knows it’s not quite like that in the ‘new humanities’. The agency and identity of the researcher is often a salient fact in the research. The embedded positionality of the author, their reflexiveness about their own context and room-for-manoeuvre, and the radical contextuality of knowledge itself – these are all more or less axiomatic in cultural studies, but they’re not easily served by ‘double-blind’ refereeing. When refereeing is depersonalised to the extent that is now rife (especially in journals owned by international commercial publishers), it is hard to maintain a sense of contextualised productivity in the knowledge domain, much less a ‘common cause’ to which both author and referee wish to contribute. Even though refereeing can still be seen as altruistic, it is in the service of something much more general (‘scholarship’) and much more particular (‘my career’) than the kind of reviewing that wants to share and improve a particular intellectual enterprise. It is this mid-range altruism – something that might once have been identified as a politics of knowledge – that’s becoming obsolete, along with the printed journals that were the banner and rallying point for the cause. If I were to start a new journal (such as cultural-science.org), I would prefer ‘open refereeing’: uploading papers on an open site, subjecting them to peer-review and criticism, and archiving revised versions once they have received enough votes and comments. In other words I’d like to see refereeing shifted from the ‘supply’ or production side of a journal to the ‘demand’ or readership side. But of course, ‘demand’ for ‘blind’ refereeing doesn’t come from readers; it comes from the funding agencies. The Reading Experience Finally, the experience of reading a journal is obsolete. Two aspects of this seem worthy of note. First, reading is ‘out of time’ – it no longer needs to conform to the rhythms of scholarly publication, which are in any case speeding up. Scholarship is no longer seasonal, as it has been since the Middle Ages (with university terms organised around agricultural and ecclesiastical rhythms). Once you have a paper’s DOI number, you can read it any time, 24/7. It is no longer necessary even to wait for publication. With some journals in our field (e.g. Journalism Studies), assuming your Library subscribes, you can access papers as soon as they’re uploaded on the journal’s website, before the published edition is printed. Soon this will be the norm, just as it is for the top science journals, where timely publication, and thereby the ability to claim first discovery, is the basis of intellectual property rights. The IJCS doesn’t (yet) offer this service, but its frequency is speeding up. It was launched in 1998 with three issues a year. It went quarterly in 2001 and remained a quarterly for eight years. It has recently increased to six issues a year. That too causes changes in the reading experience. The excited ripping open of the package is less of a thrill the more often it arrives. Indeed, how many subscribers will admit that sometimes they don’t even open the envelope? Second, reading is ‘out of place’ – you never have to see the journal in which a paper appears, so you can avoid contact with anything that you haven’t already decided to read. This is more significant than might first appear, because it is affecting journalism in general, not just academic journals. As we move from the broadcast to the broadband era, communicative usage is shifting too, from ‘mass’ communication to customisation. This is a mixed blessing. One of the pleasures of old-style newspapers and the TV news was that you’d come across stories you did not expect to find. Indeed, an important attribute of the industrial form of journalism is its success in getting whole populations to read or watch stories about things they aren’t interested in, or things like wars and crises that they’d rather not know about at all. That historic textual achievement is in jeopardy in the broadband era, because ‘the public’ no longer needs to gather around any particular masthead or bulletin to get their news. With Web 2.0 affordances, you can exercise much more choice over what you attend to. This is great from the point of view of maximising individual choice, but sub-optimal in relation to what I’ve called ‘population-gathering’, especially the gathering of communities of interest around ‘tales of the unexpected’ – novelty or anomalies. Obsolete: Collegiality, Trust and Innovation? The individuation of reading choices may stimulate prejudice, because prejudice (literally, ‘pre-judging’) is built in when you decide only to access news feeds about familiar topics, stories or people in which you’re already interested. That sort of thing may encourage narrow-mindedness. It is certainly an impediment to chance discovery, unplanned juxtaposition, unstructured curiosity and thence, perhaps, to innovation itself. This is a worry for citizenship in general, but it is also an issue for academic ‘knowledge professionals,’ in our ever-narrower disciplinary silos. An in-close specialist focus on one’s own area of expertise need no longer be troubled by the concerns of the person in the next office, never mind the next department. Now, we don’t even have to meet on the page. One of the advantages of whole journals, then, is that each issue encourages ‘macro’ as well as ‘micro’ perspectives, and opens reading up to surprises. This willingness to ‘take things on trust’ describes a ‘we’ community – a community of trust. Trust too is obsolete in these days of performance evaluation. We’re assessed by an anonymous system that’s managed by people we’ll never meet. If the ‘population-gathering’ aspects of print journals are indeed obsolete, this may reduce collegiate trust and fellow-feeling, increase individualist competitiveness, and inhibit innovation. In the face of that prospect, I’m going to keep on thinking about covers, running orders, referees and reading until the role of editor is obsolete too. ReferencesHartley, John. "'Cover Narrative': From Nightmare to Reality." International Journal of Cultural Studies 11.2 (2005): 131-137. ———. "Death of the Book?" Symposium of the National Scholarly Communication Forum & Australian Academy of the Humanities, Sydney Maritime Museum, 2005. 26 Apr. 2009 ‹http://www.humanities.org.au/Resources/Downloads/NSCF/RoundTables1-17/PDF/Hartley.pdf›. ———. "Editorial: With Goanna." International Journal of Cultural Studies 1.1 (1998): 5-10. ———. "'Who Are You Going to Believe – Me or Your Own Eyes?' New Decade; New Directions." International Journal of Cultural Studies 11.1 (2008): 5-14. Houghton, John. "Economics of Scholarly Communication: A Discussion Paper." Center for Strategic Economic Studies, Victoria University, 2000. 26 Apr. 2009 ‹http://www.caul.edu.au/cisc/EconomicsScholarlyCommunication.pdf›. Owen, Sue, and John Hartley, eds. The Uses of Richard Hoggart. International Journal of Cultural Studies (special issue), 10.1 (2007). Policy Perspectives: To Publish and Perish. (Special issue cosponsored by the Association of Research Libraries, Association of American Universities and the Pew Higher Education Roundtable) 7.4 (1998). 26 Apr. 2009 ‹http://www.arl.org/scomm/pew/pewrept.html›. "Scholarly Communication: Crisis and Revolution." University of California Berkeley Library. 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