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Journal articles on the topic 'Type apertural'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Revets, Stefan A. "The generic revision of the Reussellids (Foraminiferida)." Journal of Micropalaeontology 10, no. 1 (1991): 1–15. http://dx.doi.org/10.1144/jm.10.1.1.

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Abstract. The study of the apertural complex in the type species of the reussellid genera leads to a reassessment of the classification of these taxa. The genus Reussella has so many characteristics in common with Bulimina that it is reclassified in the Buliminidae. The family Trimosinidae is retained and redescribed to contain the genera Trimosina, Mimosina and Fijiella only. Pyramidina is retained in the Turrilinidae on account of the praebulimine toothplate.The absence of an internal toothplate and the very un-bulimine apertural face in Bifarinella, Chrysalidinella, Cifellia, Finlayina, Ort

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2

Altıner, Demır, Sevınç Özkan-Altıner, Serdar Görkem Atasoy, and Nazıf Şahın. "Paynita Permotaurica N. Gen., N. SP., and the Other Dagmaritin Foraminifera from the Changhsingian (Permian) of Southern Turkey: Review of Dagmaritin Phylogeny." Journal of Foraminiferal Research 51, no. 1 (2021): 14–31. http://dx.doi.org/10.2113/gsjfr.51.1.14.

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ABSTRACT The name Paynita is proposed for a new dagmaritin genus from the upper Changhsingian (Permian) carbonates of the Southern Biofacies Belt in Turkey. Paynita permotaurica differs from its ancestor Paradagmarita monodi by a hook-shaped fold in the apertural flap terminating systematically against the inner surface of the septal wall to protect the opening from one chamber to the other. It is associated with several species of dagmaritins, belonging to Paradagmarita, Paradagmacrusta, Louisettita, Dagmarita, Danielita, and Bidagmarita. The overall analysis of dagmaritins reveals that the s

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3

Qianyu, Li. "Ultrastructure, morphology, affinities and reclassification of <i>Cassigerinella</i> Pokorný (Foraminiferida: Globigerinina)." Journal of Micropalaeontology 5, no. 2 (1986): 49–64. http://dx.doi.org/10.1144/jm.5.2.49.

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Abstract. Re-examination of Cassigerinella chipolensis (Cushman &amp; Ponton) and comparison of the ultrastructure of its morphotypes demonstrates that the species should only contain forms with a smooth surface and that those with a pore-cone surface should be distinguished as the type species, C. boudecensis Pokorný, a name which is still valid both taxonomically and stratigraphically. Strong resemblance in surface structure, aperture pattern and essential biseriality between many heterohelicids and Cassigerinella has been considered to be significant for its reclassification. Cassigerin

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4

Jones, Robert W., Heike Bender, Michael A. Charnock, Michael A. Kaminski, and John E. Whittaker. "Emendation of the foraminiferal genus <i>Cribrostomoides</i> Cushman, 1910, and its taxonomic implications." Journal of Micropalaeontology 12, no. 2 (1993): 181–93. http://dx.doi.org/10.1144/jm.12.2.181.

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Abstract. A review of the taxonomic history of the agglutinated (benthonic) foraminiferal genus Cribrostomoides Cushman, 1910 reveals much confusion concerning its type species, coiling mode and apertural characteristics. We believe the originally designated type species of Cribrostomoides Cushman, 1910, C. bradyi Cushman, 1910, to be no more than varietally (i.e. infra-subspecifically) distinct from, and therefore a junior synonym of, Haplophragmoides subglobosus Cushman, 1910. The coiling of Cribrostomoides, as typified by C. subglobosus (Cushman, 1910), is in the form of an involute strepto

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5

Revets, Stefan A., and John E. Whittaker. "The taxonomic position of <i>Orthoplecta</i> Brady, 1884 (Foraminiferida)." Journal of Micropalaeontology 9, no. 2 (1991): 167–71. http://dx.doi.org/10.1144/jm.9.2.167.

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Abstract. The type species of Orthoplecta, contrary to previous descriptions, possesses an Elongobula-like furrowed apertural face, with a distinct toothplate. Orthoplecta is reclassified in the Buliminacea in the family Orthoplectidae, herein raised to family status. The Orthoplectidae is redefined to include the genera Orthoplecta, Elongobula and Floresina. The occurrence in Orthoplecta of morphological features characteristic of both Floresina and Buliminoides raises questions concerning the evolution of these foraminifera.

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6

Frýda, Jiří, Robert B. Blodgett, and Alfred C. Lenz. "New early Devonian gastropods from the families Crassimarginatidae (new family) and Scoliostomatidae (new family), Royal Creek Area, Yukon Territory, Canada." Journal of Paleontology 76, no. 2 (2002): 246–55. http://dx.doi.org/10.1017/s0022336000041676.

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Two new distinctive families, Crassimarginatidae and Scoliostomatidae, each characterized by unusual gerontic apertural morphotypes, are established on the basis of study of the richly diverse Lower Devonian gastropod fauna of the Road River Formation in the Royal Creek area, Yukon Territory. The Early Devonian genus Crassimarginata Jhaveri, 1969, is transferred from the family Palaeotrochidae and placed, together with the new genus Yukonoconcha, into the new family Crassimarginatidae, which is characterized by a pupiform shell with an explanate outer apertural lip in the gerontic growth stage

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7

Malinky, John Mark. "Early Paleozoic Hyolitha from North America: reexamination of Walcott's and Resser's type specimens." Journal of Paleontology 62, no. 2 (1988): 218–33. http://dx.doi.org/10.1017/s0022336000029851.

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Concepts of the family Hyolithidae Nicholson fide Fisher and the genera Hyolithes Eichwald and Orthotheca Novak have been expanded through time to encompass a variety of morphologically dissimilar shells. The Hyolithidae is here considered to include only those hyolithid species which have a rounded (convex) dorsum; slopes on the dorsum are inflated, and the venter may be flat or slightly inflated. Hyolithes encompasses species which possess a low dorsum and a prominent longitudinal sulcus along each edge of the dorsum; the ligula is short and the apertural rim is flared. The emended concept o

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8

Murray, John W. "Revised taxonomy, <i>An Atlas of British Recent Foraminiferids</i>." Journal of Micropalaeontology 19, no. 1 (2000): 44. http://dx.doi.org/10.1144/jm.19.1.44.

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Abstract. Since the publication of An Atlas of British Recent Foraminiferids (Murray, 1971) there have been many taxonomic changes. Some result from the revised generic classification summarized by Loeblich &amp; Tappan (1987), some from later taxonomic revision, while others are corrections. In the following list, the name used in 1971 is followed by the revised name. Where the generic assignment is after Loeblich &amp; Tappan (1987) the new name is listed without a reference. OD stands for original designation, i.e. the species is type of the genus. Brief explanations are given as ap

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9

Blodgett, Robert B. "Dutrochus, a new microdomatid (Gastropoda) genus from the Middle Devonian (Eifelian) of west-central Alaska." Journal of Paleontology 67, no. 2 (1993): 194–97. http://dx.doi.org/10.1017/s002233600003211x.

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A new gastropod genus, Dutrochus, is established for members of the family Microdomatidae that are characterized by a reticulate ornament of spiral cords and intersecting, finer collabral threads, with all but one spiral cord being of nearly equal strength, and the single remaining cord being of stronger (nearly twice the order) magnitude and being situated at the periphery. It is represented by the type and only known species, Dutrochus alaskensis n. gen. and sp., from the upper part (lower Middle Devonian; lower Eifelian) of the Lower? and Middle Devonian Cheeneetnuk Limestone, McGrath A-5 q

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10

Datta, Kalyani, and Subodh Datta K. "PALYNOLOGICAL INTERPRETATION OF GAMMA RAY AND COLCHICINE INDUCED MUTATION IN CHRYSANTHEMUM CULTIVARS." Israel Journal of Plant Sciences 46, no. 3 (1998): 199–207. http://dx.doi.org/10.1080/07929978.1998.10676728.

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Palynological investigation on five cultivars of Chrysanthemun morifolium Ramat. and their induced somatic flower color mutants obtained through gamma irradiation and colchicine treatment has been carried out using LM and SEM. The objective of the work was to analyze the changes in the pollen morphology which occurred in mutagen-induced somatic flower color mutants and to verify if there is any correlation between the changes in flower color/type and pollen morphology. Chromosomal status of all the cultivars and their somatic mutants is hexaploid (6 n = 54), but different types of chromosomal

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11

PIZÁ, JULIA, and NÉSTOR J. CAZZANIGA. "Redescription, shell variability and geographic distribution of Plagiodontes dentatus (Wood, 1828) (Gastropoda: Orthalicidae: Odontostominae) from Uruguay and Argentina." Zootaxa 154, no. 1 (2003): 1. http://dx.doi.org/10.11646/zootaxa.154.1.1.

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Plagiodontes dentatus (Wood, 1828) is the type species of a South American genus including eight named species that show a high degree of local endemism. Due to some misidentifications with P. multiplicatus (Doering, 1874) and P. daedaleus (Deshayes, 1851), P. dentatus has been cited as inhabiting two disjunct areas with quite different ecological conditions. In this paper the identity of this morphospecies is clarified through a study of shell sculpture and apertural teeth data, and a comparison with the smaller adult specimens (<25 mm long) of its closest species, P. patagonicus (d’Orbign

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12

Taylor, Paul D., and Frank K. McKinney. "An Archimedes-like cyclostome bryozoan from the Eocene of North Carolina." Journal of Paleontology 70, no. 2 (1996): 218–29. http://dx.doi.org/10.1017/s0022336000023301.

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A distinctive spiral unilaminate cyclostome bryozoan, recently discovered in the Eocene Castle Hayne Limestone Formation of eastern North Carolina, is described as Crisidmonea archimediformis new species. Colonies have a thickened spiral axis bearing systems of bifurcating branches. When worn and stripped of their branches, the resistant axes closely resemble the familiar screws of the Carboniferous to Permian fenestrate bryozoan genus Archimedes. However, the Eocene screws are shorter and become more loosely coiled with growth, corresponding to a helicospiral rather than a helical form. The p

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13

Yermolayev, D. M., E. A. Polushkin, S. Yu Shapoval, et al. "Detection of Terahertz Radiation by Dense Arrays of InGaAs Transistors." International Journal of High Speed Electronics and Systems 24, no. 01n02 (2015): 1550002. http://dx.doi.org/10.1142/s0129156415500020.

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Detection of terahertz radiation by GaAs transistor structures has been studied experimentally. The two types of samples under study included dense arrays of HEMTs and large-apertures detectors. Arrays consisted of parallel and series chains with asymmetric gate transistors for enhanced photoresponse on terahertz radiation. We investigated two types of wide-aperture detectors: grating gate detector, and single gate detector with bow-tie antenna. Wide-aperture detectors were symmetrical. Studies of transistor chains have shown that two essential features for this type of detector are the presen

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14

Meilijson, Aaron, Sarit Ashckenazi-Polivoda, Peter Illner, et al. "Evidence for specific adaptations of fossil benthic foraminifera to anoxic–dysoxic environments." Paleobiology 42, no. 1 (2015): 77–97. http://dx.doi.org/10.1017/pab.2015.31.

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AbstractIt has generally been argued that the majority of fossil benthic foraminifera, the most common proxy for paleo bottom oceanic conditions, could not tolerate anoxia. Here we present evidence that fossil foraminifera were able to successfully colonize anoxic–dysoxic bottom waters, by using adaptations similar to those found in living species. Our study is based on a multi proxy micropaleontological and geochemical investigation of the Upper Cretaceous sediments from the Levant upwelling regime. A shift from buliminid to diverse trochospiral dominated assemblages was recorded in an interv

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15

Sari, Septi Kurniama, Nur Azizah, Rizqy Amalia Ananda, and Kristin Kusuma Ratih. "DIVERSITY OF EXINE’S ORNAMENTAL CHARACTER STUDIES IN FERN AND FLOWERING PLANT." KnE Life Sciences 2, no. 1 (2015): 583. http://dx.doi.org/10.18502/kls.v2i1.221.

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<p>Pollen or pollen wall consists of two layers, namely exine and intine. Exine (outer layer) composed of sporopolenin, and intine (inner layer) composed of cellulose. Pollen wall structure, especially the Exine, is one of the characters used for identification. The shape and type of pollen or spores of each specific plant species. Exine’s ornamentation have variations in form and structure. That like are thorns, scratches, basins and other types of ornamentation. Pollen and spore sampling is done randomly in some plants that are supposed to represent members berspora ferns (Asplenium ni

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16

Mikhalevich, Valetia, and Jean-Pierre Debenay. "The main morphological trends in the development of the foraminiferal aperture and their taxonomic significance." Journal of Micropalaeontology 20, no. 1 (2001): 13–28. http://dx.doi.org/10.1144/jm.20.1.13.

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Abstract. As a result of the intensive movement of the cytoplasm through the aperture when communication with the environment is required, this area has an important and variable functional burden. Additional skeletal structures have a fundamental supporting function along the course of this strong cytoplasmic stream and may be related to the compartmentalization and differentiation of the cytoplasm. As a result of these important functional roles, the structure of the aperture is one of the basic diagnostic features in foraminiferal taxonomy.The simplest and least diverse apertural types are

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17

Guzhov, V. I., I. O. Marchenko, E. E. Trubilina, and A. A. Trubilin. "Sampling signals with finite set of apertures." Omsk Scientific Bulletin, no. 175 (2021): 55–58. http://dx.doi.org/10.25206/1813-8225-2021-175-55-58.

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The article discusses the issue of sampling continuous signals using a finite set of apertures. Using the apparatus of generalized functions, an analytical form of sampling is obtained for ideal sampling, for sampling a limited signal and for sampling a signal using a limited set of apertures. It is shown that the signal spectrum is the product of the signal spectrum at ideal sampling by some known factor, the influence of which can be eliminated. The type of this factor can be obtained if the type of aperture is known. The type of analytical expression differs from those known in the literatu

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18

Checa, Antonio G., and Antonio P. Jiménez-Jiménez. "Constructional morphology, origin, and evolution of the gastropod operculum." Paleobiology 24, no. 1 (1998): 109–32. http://dx.doi.org/10.1017/s0094837300020005.

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Gastropod opercula are classified here on a new morphogenetic basis, which distinguishes three main types: (1) flexiclaudent spiral (mostly multispiral) operculum, the shape of which does not coincide with that of the aperture, (2) rigiclaudent spiral (usually paucispiral) operculum, the shape of which fits that of the aperture, and (3) rigiclaudent concentric operculum, also aperture-fitting. The first type fits by flexing into the aperture and is secreted when the soft parts are partly or wholly extended (i.e., when the operculum is not in a closed position). The other two types do not flex

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19

Fernández, Damián Andrés, Patricio Emmanuel Santamarina, María Cristina Tellería, Luis Palazzesi, and Viviana Dora Barreda. "Pollen morphology of Nothofagus (Nothofagaceae, Fagales) and its phylogenetic significance." Acta Palaeobotanica 56, no. 2 (2016): 223–45. http://dx.doi.org/10.1515/acpa-2016-0017.

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Abstract Nothofagaceae (southern beeches) are a relatively small flowering plant family of trees confined to the Southern Hemisphere. The fossil record of the family is abundant and it has been widely used as a test case for the classic hypothesis that Antarctica, Patagonia, Australia and New Zealand were once joined together. Although the phylogenetic relationships in Nothofagus appear to be well supported, the evolution of some pollen morphological traits remains elusive, largely because of the lack of ultrastructural analyses. Here we describe the pollen morphology of all extant South Ameri

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20

Kato, Hirokazu, Masahiko Furukawa, Hiroshi Tanaka, et al. "Heating Characteristics of An Inductive Aperture-Type Applicator." Thermal Medicine(Japanese Journal of Hyperthermic Oncology) 2, no. 1 (1986): 3–10. http://dx.doi.org/10.3191/thermalmedicine.2.3.

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21

Knight, Robert. "Apertural characteristics of certain unilocular foraminifera: methods of study, nomenclature and taxonomic significance." Journal of Micropalaeontology 5, no. 2 (1986): 37–47. http://dx.doi.org/10.1144/jm.5.2.37.

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Abstract. A method is described for cracking open the tests of foraminifera in order to examine in detail the structure of the apertural apparatus; it is used in the examination of certain unilocular forms included in the Nodosariida and the Buliminida. Four distinct types of aperture are described in species which have at some time been included in the genus Oolina. Four new terms, ‘endosolen’, ‘exosolen’, ‘endoanulus’ and ‘endodisc’ are formally proposed to describe structures related to the apertural apparatus in these and other species. The need is indicated for a further revision of the t

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22

Sibley, Magda, and Antonio Peña-García. "Flat Glass or Crystal Dome Aperture? A Year-Long Comparative Analysis of the Performance of Light Pipes in Real Residential Settings and Climatic Conditions." Sustainability 12, no. 9 (2020): 3858. http://dx.doi.org/10.3390/su12093858.

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This paper presents the first comparative study of its type of the performance of light pipes with different types of apertures: a flat glass versus a bohemian crystal dome. Measurements were taken at 20-minute intervals over a period of one year in the bathrooms of two newly built identical houses of the same orientation located in Manchester, UK. The comparative analysis of the data collected for both light pipes types reveals that the crystal domed aperture consistently outperforms the flat glass one. Furthermore, the difference in the recorded horizontal illuminance is most marked during t

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23

Schleicher, Jörg, Peter Hubral, Martin Tygel, and Makky S. Jaya. "Minimum apertures and Fresnel zones in migration and demigration." GEOPHYSICS 62, no. 1 (1997): 183–94. http://dx.doi.org/10.1190/1.1444118.

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The size of the aperture has an important influence on the results of (Kirchhoff‐type) migration and demigration. For true‐amplitude imaging, it is crucial not to have apertures below a certain size. For both the minimum migration and demigration apertures, theoretical expressions are established. Both minimum apertures depend on each other and, although a time‐domain concept, are closely related to the frequency‐dependent Fresnel zone on the searched‐for subsurface reflector. This relationship sheds new light on the role of Fresnel zones in the seismic imaging of subsurface reflectors by show

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24

Takeuchi, Akihisa, Kentaro Uesugi, Yoshio Suzuki, Seiichi Itabashi, and Masatoshi Oda. "Fresnel zone plate with apodized aperture for hard X-ray Gaussian beam optics." Journal of Synchrotron Radiation 24, no. 3 (2017): 586–94. http://dx.doi.org/10.1107/s1600577517003289.

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Fresnel zone plates with apodized apertures [apodization FZPs (A-FZPs)] have been developed to realise Gaussian beam optics in the hard X-ray region. The designed zone depth of A-FZPs gradually decreases from the center to peripheral regions. Such a zone structure forms a Gaussian-like smooth-shouldered aperture function which optically behaves as an apodization filter and produces a Gaussian-like focusing spot profile. Optical properties of two types of A-FZP, i.e. a circular type and a one-dimensional type, have been evaluated by using a microbeam knife-edge scan test, and have been carefull

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25

Lin, Qingfang, Song Wang, Yihang Dao, Jianyong Wang, and Kai Wang. "Arabidopsis thaliana trehalose-6-phosphate phosphatase gene TPPI enhances drought tolerance by regulating stomatal apertures." Journal of Experimental Botany 71, no. 14 (2020): 4285–97. http://dx.doi.org/10.1093/jxb/eraa173.

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Abstract Transpiration occurs through stomata. The alteration of stomatal apertures in response to drought stress is an important process associated with water use efficiency (WUE). Trehalose-6-phosphate phosphatase (TPP) family genes have been reported to participate in adjustment of stomatal aperture. However, there have been no reports of the trehalose metabolism pathway genes improving WUE, and the upstream signalling pathway modulating these genes is not clear. Here, we demonstrate that a member of the TPP gene family, AtTPPI, confers drought resistance and improves WUE by decreasing stom

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Rath, Santosh Kumar, Yam Lip Huei, Sylvia Sutino, et al. "Advanced No-Clean Solder Paste for SIP applications." International Symposium on Microelectronics 2020, no. 1 (2020): 000025–33. http://dx.doi.org/10.4071/2380-4505-2020.1.000025.

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Abstract This paper reports the comparison of two solder pastes made using a no clean flux platform and ultrafine SAC305 powders of Type 7 and Type8+, made using Heraeus’ Welco® technology. The application tests were carried out using 008004 components, the smallest passives used in SiPs. For the paste with Type 7 powder, the application tests complete with 12hrs of stencil evaluation have been reported, whereas for the paste with Type8+ powder, a preliminary work-life evaluation has been reported. Both pastes have been compared for the release performance using area ratios down to 0.35, with

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27

Magrini, Sara, and Anna Scoppola. "Variability of pollen aperture heteromorphism in annual pansies (Viola Section Melanium)." Acta Botanica Croatica 74, no. 1 (2015): 43–52. http://dx.doi.org/10.1515/botcro-2015-0003.

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Abstract Pollen heteromorphism is frequent in the section Melanium of the genus Viola, in which over 80% of the species produces pollen morphs with 3 to 6 apertures. Some authors have pointed out that many factors can affect the proportion of the different pollen types in perennial species, and that this proportion can change among populations. This work focuses on the study of the polymorphic pollen assemblage of three annual pansies: Viola arvensis, V. kitaibeliana, and V. hymettia, and on the assessment of its variability both within a population and within the same plant. In all the specie

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Sahashi, N., and J. Ueno. "Pollen morphology of Ginkgo biloba and Cycas revoluta." Canadian Journal of Botany 64, no. 12 (1986): 3075–78. http://dx.doi.org/10.1139/b86-406.

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Morphological studies on pollen grains of Ginkgo biloba L. and Cycas revoluta Thunb. were carried out by scanning electron microscopy. The pollen grains of both species are generally oblong with 1-sulcate apertures which are shrunken as a result of dryness. However, the swollen grains show an almost spherical form with a large and rounded germinal aperture. This aperture may not correspond to any aperture type so far known, although the term "anaporate" can be fitted to the swollen pollen grains. Auricular projections, which may be derived from protrusions of the ectosexine, can be seen someti

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Avelar, WEP, and AD Cunha. "The anatomy and functional morphology of Diplodon rhombeus fontainianus (Orbigny, 1835) (Mollusca Bivalvia, Hyriidae)." Brazilian Journal of Biology 69, no. 4 (2009): 1153–63. http://dx.doi.org/10.1590/s1519-69842009000500021.

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Diplodon rhombeus fontainianus (Orbigny, 1835), belongs to the family Hyriidae Swainson 1840, the distribution of which is restricted to South America and Australasia. This species, endemic to Brazil, occurs in the central-southern geographical region, Upper Paraná Basin and Atlantic Microbasins Espirito Santo to Paraná states. The mollusk lives buried in muddy substrata, has similar sized adductor muscles, and is dioecious, lacking sexual dimorphism. The apertures are simple (type AII of Yonge, 1948, 1957) as in Diplodon rotundus gratus, Castalia undosa martensi, Castalia undosa undosa and ma

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Hirotsugu Yamamoto, Hirotsugu Yamamoto, Hayato Nishimura Hayato Nishimura, Tetsuya Abe Tetsuya Abe, and Yoshio Hayasaki Yoshio Hayasaki. "Large stereoscopic LED display by use of parallax barrier of aperture grille type (Invited Paper)." Chinese Optics Letters 12, no. 6 (2014): 060006–60010. http://dx.doi.org/10.3788/col201412.060006.

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Klimko, Małgorzata, Krystyna Idzikowska, Mariola Truchan, and Anna Kreft. "Pollen morphology of Plantago species native to Poland and their taxonomic implications." Acta Societatis Botanicorum Poloniae 73, no. 4 (2011): 315–25. http://dx.doi.org/10.5586/asbp.2004.041.

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Pollen grains of 9 species of the genus <em>Plantago</em> (Plantaginaceae), including 8 taxa native to Poland, were observed under a light microscope and a scanning electron microscope. Descriptions of grain sculpture are illustrated only SEM micrographs. The studied pollen grains were medium-sized or small, spherical or prolate spheroidal. Their sculpture was always verrucate with granulation. In the studied taxa, internal apertures had the form of pores. Their number ranged from (4)5-9(14). The pores were scattered on the surface of pollen grains. Identification features of indiv

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Božič, Anže, and Antonio Šiber. "Mechanical design of apertures and the infolding of pollen grain." Proceedings of the National Academy of Sciences 117, no. 43 (2020): 26600–26607. http://dx.doi.org/10.1073/pnas.2011084117.

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When pollen grains become exposed to the environment, they rapidly desiccate. To protect themselves until rehydration, the grains undergo characteristic infolding with the help of special structures in the grain wall—apertures—where the otherwise thick exine shell is absent or reduced in thickness. Recent theoretical studies have highlighted the importance of apertures for the elastic response and the folding of the grain. Experimental observations show that different pollen grains sharing the same number and type of apertures can nonetheless fold in quite diverse fashions. Using the thin-shel

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33

Hottinger, Lukas, Elwira Halicz, and Zeev Reiss. "The foraminiferal genera Pararotalia, Neorotalia, and Calcarina: taxonomic revision." Journal of Paleontology 65, no. 1 (1991): 18–33. http://dx.doi.org/10.1017/s0022336000020151.

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Scanning electron microscopy of the architecture of Rotalina inermis Terquem, 1882, the type-species of the genus Pararotalia Le Calvez, 1949, and of Rotalia mexicana Nuttall, 1928, the type-species of the genus Neorotalia Bermudez, 1952, reveals that both taxa have in common: 1) an umbilical bowl closed by either a single or a compound umbilical plug; 2) an interiomarginal extraumbilical aperture, restricted by a toothplate that protrudes with a free edge into the aperture and forms an umbilical spiral canal; and 3) a septal flap and intraseptal interlocular spaces. Rotalia mexicana, however,

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Fredrick, L. W., G. F. Benedict, R. Duncombe, et al. "Pickles: A Wide-Field Imaging Tool." Symposium - International Astronomical Union 161 (1994): 356–58. http://dx.doi.org/10.1017/s0074180900047641.

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The program Pickles was developed as an aid for planning HST observations using the Space Telescope Science Institute's Guide Star Catalogue, which was generated from wide-field Schmidt plates. Pickles reads the catalogue from CD-ROM and then displays a one-degree square field. The HST focal plane apertures can then be displayed singly or in any combination which is at the choice of the observer (Fig. 1). The user can generate an aperture of a different type if need be. The stars can be displayed as open or filled circles with their relative sizes indicating their magnitude. Stars or other obj

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Рогожина, Е. А., О. А. Шипоша, К. А. Лайко, А. С. Разумихин, and Ю. О. Филимонова. "AMPLITUDE DISTRIBUTION OF LINEAR ANTENNA SYSTEMS WITH CONTINUOUS APERTURES." ВЕСТНИК ВОРОНЕЖСКОГО ГОСУДАРСТВЕННОГО ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА, no. 1 (April 19, 2021): 56–63. http://dx.doi.org/10.36622/vstu.2021.17.1.008.

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Проведены исследования известных амплитудных распределений для линейных непрерывных раскрывов, а также получен ряд новых распределений с наилучшим соотношением коэффициента использования поверхности раскрыва для заданного уровня боковых лепестков. Среди рассмотренных известны амплитудные распределения типа “косинус m-й степени”. Отмечены амплитудные распределения из данного класса, диаграммы направленности которых обладают противофазными боковыми лепестками. Предложен новый класс амплитудных распределений для непрерывных раскрывов типа суперпозиции “косинус m-й степени” и “косинус m-2 степени”

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Oh, Young-Jei, and Deuk Yong Lee. "Fabrication and characteristics of limit-current type oxygen sensor with monolith aperture structure." Journal of Sensor Science and Technology 17, no. 4 (2008): 273–80. http://dx.doi.org/10.5369/jsst.2008.17.4.273.

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Norenburg, Jon L., and Joan D. Ferraris. "Cytomorphology of the pedal aperture glands of Mya arenaria L. (Mollusca, Bivalvia)." Canadian Journal of Zoology 68, no. 6 (1990): 1137–44. http://dx.doi.org/10.1139/z90-169.

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A glandular cushion, called the pedal aperture gland in this paper, lies adjacent and internal to each of the two mantle margins composing the pedal aperture of the soft-shelled clam Mya arenaria. Two types of glandular cells are found in the glands. The principal type (bacillary mucous cell) manufactures secretory vesicles that contain discrete protein-rich fibers in a matrix of glycoprotein. The second type (mucous goblet cell) produces sulfated and nonsulfated mucosubstances. The glands function in the formation of pseudofeces from particulate material, especially burrow sediments that ente

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Tanner, Phillip, John Gorman, and Eph Sparrow. "Flow–pressure drop characteristics of perforated plates." International Journal of Numerical Methods for Heat & Fluid Flow 29, no. 11 (2019): 4310–33. http://dx.doi.org/10.1108/hff-01-2019-0065.

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Purpose The purpose of this study is to quantify the relationship between the fluid flow and pressure drop for perforated plates. The homogenization of non-uniform fluid flows is often accomplished by passing the fluid through perforated plates. The underlying principle for the accomplishment of flow homogenization is a tradeoff of pressure drop for flow uniformity. Design/methodology/approach The investigation, implemented by numerical simulation, is based on turbulent flow in pipes and across perforated plates. The approach is as follows: (a) to devise a model to determine pressure drop’s fl

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Wang, Chengtao, Ershuai Kong, Da Cheng, Yingzhe Wang, Kai Zhang, and Qingjin Xu. "Electromagnetic design of a 12 T twin-aperture dipole magnet." International Journal of Modern Physics A 32, no. 34 (2017): 1746008. http://dx.doi.org/10.1142/s0217751x17460083.

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A 12 T twin-aperture subscale magnet is under development at the Institute of High Energy Physics (IHEP, Beijing, China), as the R&D of high-field accelerator magnet technology for SPPC (Super Proton–Proton Collider) pre-study. Four NbTi coils and two Nb3Sn coils will be fabricated firstly, to provide a 12 T dipole field in two apertures with the load line ratio of 20% at 4.2 K. After that, the HTS (ReBCO and Bi-2212) coils will be inserted between the Nb3Sn coils to realize a higher dipole field. The ReBCO coils with the block-type configuration will be inserted between the Nb3Sn coils wi

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De Klasz, Ivan, Dick Kroon, and Jan E. Van Hinte. "Notes on the Foraminiferal Genera <i>Laterostomella</i> De Klasz and Rérat and <i>Streptochilus</i> Brönnimann and Resig." Journal of Micropalaeontology 8, no. 2 (1989): 215–25. http://dx.doi.org/10.1144/jm.8.2.215.

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Abstract. the biserial foraminiferal genera Laterostomella de Klasz &amp; Rérat (1962) and Streptochilus Brönnimann &amp; Resig (1971) have been described from the Miocene of Gabon and from Miocene to Recent levels of the Pacific and Indian Oceans, respectively. Both genera have since been found in the Upper Cenozoic of other regions: Laterostomella at Rockall Bank in the North Atlantic and in Papua-New-Guinea, and modern Streptochilus specimens were collected with plankton nets in the northern part of the Indian Ocean. The apertural characteristics of Laterostomella and Streptochilus

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Cribb, B. W., R. J. Gould, and I. D. Whittington. "A comparison of anterior adhesive areas and secretions in Troglocephalus rhinobatidis and Neoheterocotyle rhinobatidis (Monogenea : Monocotylidae) from the gills of the shovelnose ray, Rhinobatos typus (Rhinobatidae)." Australian Journal of Zoology 49, no. 5 (2001): 577. http://dx.doi.org/10.1071/zo01028.

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This study continues the collection of data on the anterior adhesive areas and secretions of monopisthocotylean monogenean (flatworm) parasites and begins an investigation of their phylogenetic usefulness. Here, two species of parasitic worms from an elasmobranch, Troglocephalus rhinobatidis (Monocotylidae: Dasybatotreminae) and Neoheterocotyle rhinobatidis (Monocotylidae: Heterocotylinae), are compared and contrasted. It has been suggested in recent literature that these two taxa are more closely related than is currently recognised. Our data support this view. Both species have multiple aper

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Hoberg, Eric P., Ann M. Adams, and Robert L. Rausch. "Revision of the genus Anophryocephalus Baylis, 1922 from pinnipeds in the Holarctic, with descriptions of Anophryocephalus nunivakensis sp.nov. and A. eumetopii sp.nov. (Tetrabothriidae) and evaluation of records from the Phocidae." Canadian Journal of Zoology 69, no. 6 (1991): 1653–68. http://dx.doi.org/10.1139/z91-230.

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Anophryocephalus Baylis, 1922 is emended to include tetrabothriid cestodes with intricate scolices (paired auricular appendages and bothridial operculae), complex genital atria (muscular chamber ventral to the vagina; muscular pad adjacent to the aperture of the male canal), and atrophy of the dorsal osmoregulatory system. Anophryocephalus anophrys (type), A. skrjabini, and A. ochotensis are redescribed. Anophryocephalus nunivakensis sp.nov., from Phoca largha, has bothridial operculae with broad anterior apertures, an ovoid cirrus sac (57–95 μm in diameter), a ventrolaterally directed male ca

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MacInnes, W. Joseph, Ómar I. Jóhannesson, Andrey Chetverikov, and Árni Kristjánsson. "No Advantage for Separating Overt and Covert Attention in Visual Search." Vision 4, no. 2 (2020): 28. http://dx.doi.org/10.3390/vision4020028.

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We move our eyes roughly three times every second while searching complex scenes, but covert attention helps to guide where we allocate those overt fixations. Covert attention may be allocated reflexively or voluntarily, and speeds the rate of information processing at the attended location. Reducing access to covert attention hinders performance, but it is not known to what degree the locus of covert attention is tied to the current gaze position. We compared visual search performance in a traditional gaze-contingent display, with a second task where a similarly sized contingent window is con

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Barat, Dilyar, Francesco D’Eugenio, Matthew Colless, et al. "The SAMI Galaxy Survey: mass–kinematics scaling relations." Monthly Notices of the Royal Astronomical Society 487, no. 2 (2019): 2924–36. http://dx.doi.org/10.1093/mnras/stz1439.

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ABSTRACT We use data from the Sydney-AAO Multi-object Integral-field spectroscopy (SAMI) Galaxy Survey to study the dynamical scaling relation between galaxy stellar mass M∗ and the general kinematic parameter $S_K = \sqrt{K V_{\rm rot}^2 + \sigma ^2}$ that combines rotation velocity Vrot and velocity dispersion σ. We show that the log M∗ – log SK relation: (1) is linear above limits set by properties of the samples and observations; (2) has slightly different slope when derived from stellar or gas kinematic measurements; (3) applies to both early-type and late-type galaxies and has smaller sc

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Fressinaud, Edith, Agnès Veyradier, Florence Truchaud, et al. "Screening for von Willebrand Disease With a New Analyzer Using High Shear Stress: A Study of 60 Cases." Blood 91, no. 4 (1998): 1325–31. http://dx.doi.org/10.1182/blood.v91.4.1325.

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AbstractWe have evaluated the performance of a new analyzer using high shear stress, the PFA-100 (Platelet Function Analyzer, Dade International, Massy, France), for screening of patients with von Willebrand disease (vWD). Whole citrated blood is aspirated through a capillary to the central aperture of a membrane coated with collagen and with a platelet agonist (either epinephrine or adenosine diphosphate [ADP]). The time required to obtain occlusion of the aperture by a platelet plug is defined as the closure time (CT). We studied 60 patients with different types of vWD and 96 normal subjects

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W. Kay, Robert, Gerard Cummins, Thomas Krebs, Richard Lathrop, Eitan Abraham, and Marc Desmulliez. "Statistical analysis of stencil technology for wafer-level bumping." Soldering & Surface Mount Technology 26, no. 2 (2014): 71–78. http://dx.doi.org/10.1108/ssmt-07-2013-0017.

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Purpose – Wafer-level stencil printing of a type-6 Pb-free SAC solder paste was statistically evaluated at 200 and 150 μm pitch using three different stencil manufacturing technologies: laser cutting, DC electroforming and micro-engineered electroforming. This investigation looks at stencil differences in printability, pitch resolution, maximum achievable bump height, print co-planarity, paste release efficiency, and cleaning frequency. The paper aims to discuss these issues. Design/methodology/approach – In this paper, the authors present a statistical evaluation of the impact of stencil tech

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Chen, Jie, Lun Hua He, Jun Rong Zhang, and Fang Wei Wang. "Planning of Energy-Selective Neutron Imaging Instrument at CSNS and its Application Prospect in Materials Science." Materials Science Forum 850 (March 2016): 161–66. http://dx.doi.org/10.4028/www.scientific.net/msf.850.161.

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In order to serve a growing multidisciplinary community beyond the traditional scattering areas, an energy-selective neutron imaging instrument is proposed in the China Spallation Neutron Source (CSNS). The instrument is planned to provide analytical techniques such as state-of-the-art energy-selective neutron imaging, neutron radiography, tomography, polarized neutron imaging, neutron phase contrast imaging, and combined neutron diffraction. Coupled hydrogen moderator (CHM) will be chosen as its neutron source. A flight path of 40 m from moderator to sample will provide good energy resolution

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Stadtműller, Marek. "Well logging interpretation methodology for carbonate formation fracture system properties determination." Acta Geophysica 67, no. 6 (2019): 1933–43. http://dx.doi.org/10.1007/s11600-019-00351-w.

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Abstract The article presents the methodology for the qualitative determination of fracture zones in the profiles of carbonate formations, based on the complex fracture analysis (CFA) method. Three additive fracture ranges were distinguished, characterized by successively increasing aperture and fracture length values, operatively named micro, meso and macro. Furthermore, the quantitative characterization of fractures with different apertures was done. The methodology of laboratory data integration, fracture porosity and fracture permeability measurements performed on thin section and polished

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Hyer, Daniel E., Laura C. Bennett, Theodore J. Geoghegan, Martin Bues, and Blake R. Smith. "Innovations and the Use of Collimators in the Delivery of Pencil Beam Scanning Proton Therapy." International Journal of Particle Therapy 8, no. 1 (2021): 73–83. http://dx.doi.org/10.14338/ijpt-20-00039.1.

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Abstract Purpose The development of collimating technologies has become a recent focus in pencil beam scanning (PBS) proton therapy to improve the target conformity and healthy tissue sparing through field-specific or energy-layer–specific collimation. Given the growing popularity of collimators for low-energy treatments, the purpose of this work was to summarize the recent literature that has focused on the efficacy of collimators for PBS and highlight the development of clinical and preclinical collimators. Materials and Methods The collimators presented in this work were organized into 3 ca

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Fakhrizal, Teuku. "Morfologi Serbuk Sari Familia Poacea di Kampus Universitas Syiah Kuala Banda Aceh." BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan 3, no. 2 (2017): 116. http://dx.doi.org/10.22373/biotik.v3i2.1001.

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The title of the research was "The morphology of pollen of Familia Poaceae at Syiah Kuala University in Banda Aceh". The purpose of this study was to know the morphology of Poaceae allergenic. The microscopic pollen preparat was made by acetolysis method. The data were collected by using descriptive methods and photos. Pollen microscopic preparat was made by acetolysis method. The data were collected by using descriptive method and picture. The parameters used in this research were unit, shape, aperture, sculpture, and allergenic types of the pollen. The result showed that there were 30 specie

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