Articles de revues : « Pencil-like »

1

Barnes, Suzanne. « Try holding your pencil like this ». Visual Inquiry 1, n^o 1 (24 août 2011) : 59–62. http://dx.doi.org/10.1386/vi.1.1.59_7.

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Cai, Fuhong, Dan Wang, Min Zhu et Sailing He. « Pencil-like imaging spectrometer for bio-samples sensing ». Biomedical Optics Express 8, n^o 12 (8 novembre 2017) : 5427. http://dx.doi.org/10.1364/boe.8.005427.

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Zhou, Li, Zhiheng Lyu et Younan Xia. « Pencil-like Ag Nanorods Asymmetrically Capped by Pd ». Chemistry of Materials 32, n^o 12 (22 mai 2020) : 5361–67. http://dx.doi.org/10.1021/acs.chemmater.0c01837.

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4

Wang, Fuxue, Yao Yao, Dawei Yan, Zhaomin Zhu et Xiaofeng Gu. « Synthesis and optical properties of pencil-like and shuttle-like ZnO microrods ». Applied Physics A 116, n^o 3 (22 avril 2014) : 1173–79. http://dx.doi.org/10.1007/s00339-014-8424-1.

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Lin, Lizhi, Yingwei Li, Ai-Kah Soh et Faxin Li. « A pencil-like magnetoelectric sensor exhibiting ultrahigh coupling properties ». Journal of Applied Physics 113, n^o 13 (7 avril 2013) : 134101. http://dx.doi.org/10.1063/1.4798509.

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Wang, Yinglei, Zhe Zhang, Hongxing Dong, Wei Xie, Tao Hu et Zhanghai Chen. « Exciton-polariton effects in a pencil-like ZnO microwire ». Solid State Communications 223 (décembre 2015) : 24–27. http://dx.doi.org/10.1016/j.ssc.2015.08.029.

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Merriman, William E., Lorna H. Jarvis et John M. Marazita. « How shall a deceptive thing be called ? » Journal of Child Language 22, n^o 1 (février 1995) : 129–49. http://dx.doi.org/10.1017/s0305000900009661.

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ABSTRACTThirty-six three-, four- and five-year-olds were asked to select labels for deceptive stimuli (e.g. for an eraser that looked like a pencil). Three types of labelling were investigated –simple (e.g. ‘is an eraser’); appearance-predicated (e.g. ‘looks like an eraser’); and reality-predicated (e.g. ‘is really and truly an eraser’). An age-related appearance-reality shift was observed in simple labelling (e.g. older children were more likely than younger ones to accept eraser and reject pencil as simple names for the pencil-eraser). This trend was robust over method and semantic domain, though weaker with object than with colour labels. As in previous research, older children were more likely than younger ones to map different appearance- than reality-predicated labels onto an item (e.g. to accept that the pencil-eraser looks like a pencil, but is really and truly an eraser); however, all age groups were reluctant to extend more than one name to a stimulus via a common predicate (e.g. to accept two reality-predicated labels for the same object). This one-label-per-predicate pattern was observed more frequently within reality than within appearance predicates; more frequently with colour than with object names, and with questions blocked by predicate than by name. It is argued that younger children maintained this pattern because of inflexible encoding, but that older ones did so because of better understanding of the appearance-reality distinction, greater reality dominance, and a Mutual Exclusivity bias.

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Gül, Adem, Ertuğrul Can, Özlem Eşki Yücel, Leyla Niyaz, Halil İbrahim Akgün et Nurşen Arıtürk. « Suspected Endothelial Pencil Graphite Deposition ». Case Reports in Ophthalmological Medicine 2013 (2013) : 1–3. http://dx.doi.org/10.1155/2013/369374.

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A 14-year-old male patient had an ocular trauma with a pencil. Biomicroscopic examination revealed a broken part of pencil into the cornea. Foreign body removal and corneal wound closure were performed in the same day. After corneal repair, there was a grade 4+ anterior chamber reaction just like in preoperative examination. Dilated examination showed a very small piece broken tip of pencil on the upper nasal quadrant of the lens. A small and linear deposition was also seen on endothelial surface. Endothelial deposition and foreign body disappeared with intensive topical steroid treatment.

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9

Hou, Hongwei, Yujie Xiong, Yi Xie, Qing Li, Jingyao Zhang et Xiaobo Tian. « Structure-direct assembly of hexagonal pencil-like ZnO group whiskers ». Journal of Solid State Chemistry 177, n^o 1 (janvier 2004) : 176–80. http://dx.doi.org/10.1016/s0022-4596(03)00395-5.

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Xu, Jiasheng, et Dongfeng Xue. « Chemical synthesis of BaCO3 with a hexagonal pencil-like morphology ». Journal of Physics and Chemistry of Solids 67, n^o 7 (juillet 2006) : 1427–31. http://dx.doi.org/10.1016/j.jpcs.2006.01.105.

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11

Wang, Li, et Kezheng Chen. « Facile synthesis of pencil-like ZnO nanostructures at low temperature ». Crystal Research and Technology 48, n^o 3 (mars 2013) : 163–68. http://dx.doi.org/10.1002/crat.201300029.

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Chen, Ru, Dan Liu, Li Xia Yuan et Dian Wu Huang. « Controlled Synthesis and Gas-Sensing Properties of One Dimensional Zinc Oxide Architectures ». Advanced Materials Research 726-731 (août 2013) : 642–45. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.642.

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One-dimensional (1D) ZnO nanorods with different shapes and high aspect ratio were successfully synthesized using a cetyltrimethylammonium bromide (CTAB)-assisted or sodium dodecyl sulfate (SDS)-assisted hydrothermal process at 90°C for 5h. The surface morphology and structure of nanocrystals were characterized by FE-SEM and XRD. Experimental results showed that the typical morphology of ZnO crystals grown with additive of CTAB was pencil-like rods, while the ZnO crystals grown with SDS showed needle-like rods. The gas sensors had been fabricated using 1D ZnO powders to examine the response towards 40ppm NO2 in the range of operating temperature from 150 oC to 450 oC. Compared with needle-like ZnO crystals, the NO2 gas sensor based on pencil-like ZnO nanostructure had better selectivity at the same gas concentration.

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Wu, Mengqiang, Jian Yang, Tingting Feng, Weiwei Jiang, Dawei Xia, Feng Gong et Jiaxuan Liao. « Graphene coated Co3V2O8 micro-pencils for enhanced-performance in lithium ion batteries ». New Journal of Chemistry 41, n^o 19 (2017) : 10634–39. http://dx.doi.org/10.1039/c7nj02219k.

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14

Wühr, Peter. « Target-Specific Learning Contributes to Practice Effects in Paper-and-Pencil Tests of Attention ». Swiss Journal of Psychology 78, n^o 1-2 (avril 2019) : 29–35. http://dx.doi.org/10.1024/1421-0185/a000221.

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Abstract. Previous studies revealed that performance in paper-and-pencil tests of attention, such as the d2-R test, improves with practice, though the sources of these practice effects are yet unknown. Practice effects in psychometric tests are a serious problem because they impede the evaluation of test performance and constrain the utility of these tests. This study addresses the role of target-specific learning for practice in a d2-like paper-and-pencil test of attention. Two variants of a d2-like test, which exclusively differed in the set of target stimuli, were constructed. Participants were tested on two days separated by one week. Participants in the control condition searched for the same targets (among the same distractors) in each session, whereas participants in the test group searched for different targets (among the same distractors) in each session. Results showed practice benefits in both groups, but benefits were larger in the control group than in the test group. The results suggest that practice improves the processing of target features in paper-and-pencil tests of attention. Hence, using two versions with different sets of targets may effectively reduce practice effects in d2-like tests of attention. Further implications of the findings are discussed.

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15

Liu, Zhifu, Qinghong Zhang, Yaogang Li et Hongzhi Wang. « Solvothermal synthesis, photoluminescence and photocatalytic properties of pencil-like ZnO microrods ». Journal of Physics and Chemistry of Solids 73, n^o 5 (mai 2012) : 651–55. http://dx.doi.org/10.1016/j.jpcs.2012.01.003.

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16

Wang, Fengyan, Yulian Zeng, Daxue Du, Xiaoya Duan, Chenbo Wang, Jian Wang, Haiyan Wang et Zhaopeng Xu. « Growth mechanism of pencil-like ZnO nanotower arrays influenced by ammonia ». Journal of Crystal Growth 546 (septembre 2020) : 125758. http://dx.doi.org/10.1016/j.jcrysgro.2020.125758.

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Wang, C. P., X. J. Liu, I. Ohnuma, R. Kainuma et K. Ishida. « Self-formed pencil-like bulk composite materials consisting of copper alloy and stainless steel ». Journal of Materials Research 23, n^o 4 (avril 2008) : 933–40. http://dx.doi.org/10.1557/jmr.2008.0137.

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On the basis of the CALPHAD (Calculation of Phase Diagrams) method, the compositional range of stable miscibility gap and volume fractions of the two liquid phases in the Cu–Fe–Cr–Ni system were predicted, which can provide the guidance for design of self-formed composite materials. Based on such information, the self-formed pencil-like bulk composite materials consisting of copper alloy and two kinds of stainless steels were prepared by controlling the compositions of Cu-rich and Fe-rich phases in immiscible liquid system by the conventional casting process. The experimental results are in good agreement with the ones predicted by calculation. This study indicates that it is possible to develop the pencil-like bulk composite materials consisting of copper alloy and stainless steels by the conventional casting process.

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18

Lee, Martin, Ali Mazaheri, Herre S. J. van der Zant, Riccardo Frisenda et Andres Castellanos-Gomez. « Drawing WS2 thermal sensors on paper substrates ». Nanoscale 12, n^o 43 (2020) : 22091–96. http://dx.doi.org/10.1039/d0nr06036d.

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19

Tamura, Rihito, Katsuma Miyamoto, Satoru Tsukada et Katsuyoshi Hoshino. « Edge-on lamellar crystallization of oligo(3-methoxythiophene) in polyester matrix films and a gold tone development thereof ». Materials Advances 3, n^o 8 (2022) : 3428–37. http://dx.doi.org/10.1039/d1ma00994j.

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The oligomers of 3-methoxythiophene (O3MeOT) self-assembled to form edge-on lamellar crystallites even in polyester (PES) matrices, providing blend films with a gold-like luster and a pencil hardness of H.

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20

Lv, Hualiang, Guangbin Ji, Zhihong Yang, Yousong Liu, Xingmiao Zhang, Wei Liu et Haiqian Zhang. « Enhancement photocatalytic activity of the graphite-like C 3 N 4 coated hollow pencil-like ZnO ». Journal of Colloid and Interface Science 450 (juillet 2015) : 381–87. http://dx.doi.org/10.1016/j.jcis.2015.03.038.

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Mahmoudi-Moghaddam, Hadi, et Zahra Garkani-Nejad. « A new electrochemical DNA biosensor for determination of anti-cancer drug chlorambucil based on a polypyrrole/flower-like platinum/NiCo₂O₄/pencil graphite electrode ». RSC Advances 12, n^o 8 (2022) : 5001–11. http://dx.doi.org/10.1039/d1ra08291d.

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In the current study, DNA immobilization was performed on pencil graphite (PG) modified with a polypyrrole (PPy) and flower-like Pt/NiCo2O4 (FL-Pt/NiCo2O4) nanocomposite, as a new sensitive electrode to detect chlorambucil (CHB).

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22

Mazarakis, M. G., J. W. Poukey, D. C. Rovang, J. E. Maenchen, S. R. Cordova, P. R. Menge, R. Pepping et al. « Pencil-like mm-size electron beams produced with linear inductive voltage adders ». Applied Physics Letters 70, n^o 7 (17 février 1997) : 832–34. http://dx.doi.org/10.1063/1.118217.

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Matsufuji, Naruhiro, Masataka Komori, Hitomi Sasaki, Kengo Akiu, Masako Ogawa, Akifumi Fukumura, Eriko Urakabe et al. « Spatial fragment distribution from a therapeutic pencil-like carbon beam in water ». Physics in Medicine and Biology 50, n^o 14 (6 juillet 2005) : 3393–403. http://dx.doi.org/10.1088/0031-9155/50/14/014.

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Wang, Qiushi, Yonghui Xie, Jian Zhang et Ridong Cong. « Synthesis, photoluminescence and ferromagnetic properties of pencil-like Y doped AlN microrods ». Ceramics International 43, n^o 3 (février 2017) : 3319–23. http://dx.doi.org/10.1016/j.ceramint.2016.11.172.

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Yang, Ya, Wen Guo, Xueqiang Wang, Zengze Wang, Junjie Qi et Yue Zhang. « Size Dependence of Dielectric Constant in a Single Pencil-Like ZnO Nanowire ». Nano Letters 12, n^o 4 (22 mars 2012) : 1919–22. http://dx.doi.org/10.1021/nl204353t.

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Pusparini, Indrawati, et Endang Setyo Astuti. « The Effectiveness of Hybrid Learning Module on Basic Structure Course In IKIP Budi Utomo Malang ». Paradigma : Jurnal Filsafat, Sains, Teknologi, dan Sosial Budaya 25, n^o 2 (30 septembre 2019) : 12–16. http://dx.doi.org/10.33503/paradigma.v25i2.523.

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This article is an investigation into the effectiveness of hybrid learning module on basic structure in students university in Ikip Budi Utomo . This concepts related to hybrid learning and conventional classroom. There were 90 students who participated in this research . The study revealed that students prefer hybrid learning on basic structure to conventional classroom, paper and pencil . As the first, they seemed like to take English lessons in conventional form, paper and pencil, rather than in hybrid leaning form, because they used to study in conventional method. When they submitted English assignments online or personally, their opinions were changed. They finally trusted to hybid learning method. This method of the research use quantitative method.The research found that significantly different capability in basic structure comprehension. The obtained t-test value for hybrid learning module on basic structure was 7.85 while the critical value of p< .05 level of significance of one-tailed test was 1.671 (d.f.= 60 ). From the t-test computation, it can be concluded that the students taught by hybrid learning module had better capability than those the students taught in conventional, paper and pencil . In conclution, learning basic structure based on hybrid learning module is better than conventional method , paper and pencil. Additionally, some recommendations for future work in this field were made.

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Lin, Zefan, et Bo Wang. « Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation ». Laser Physics 31, n^o 2 (13 janvier 2021) : 026202. http://dx.doi.org/10.1088/1555-6611/abd566.

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An, Liang, Guanghui Wang, Lei Zhao, Yong Zhou, Fang Gao et Yang Cheng. « Hexagonal pencil-like CdS nanorods : Facile synthesis and enhanced visible light photocatalytic performance ». Russian Journal of Physical Chemistry A 89, n^o 7 (juillet 2015) : 1195–200. http://dx.doi.org/10.1134/s0036024415070213.

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Orbay, Günay, et Levent Burak Kara. « Pencil-like sketch rendering of 3D scenes using trajectory planning and dynamic tracking ». Journal of Visual Languages & ; Computing 25, n^o 4 (août 2014) : 481–93. http://dx.doi.org/10.1016/j.jvlc.2014.02.002.

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Du, Jianping, Heyan Wang, Ruihua Zhao, Yajuan Xie et Huanli Yao. « Surfactant-assisted synthesis of the pencil-like zinc oxide and its sensing properties ». Materials Letters 107 (septembre 2013) : 259–61. http://dx.doi.org/10.1016/j.matlet.2013.06.014.

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Nie, Rongbin, Jingwen Huang, Xuexue Xu et Li Yang. « A portable pencil-like immunosensor for point-of-care testing of inflammatory biomarkers ». Analytical and Bioanalytical Chemistry 412, n^o 13 (14 mars 2020) : 3231–39. http://dx.doi.org/10.1007/s00216-020-02582-z.

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Mjejri, I., N. Etteyeb, S. Somrani et F. Sediri. « Tetragonal pencil-like VO2(R) as electrode materials for high-performance redox activities ». Ceramics International 42, n^o 5 (avril 2016) : 6121–28. http://dx.doi.org/10.1016/j.ceramint.2015.12.173.

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Neller, Todd W., et Hien G. Tran. « The Bullets Puzzle : A Paper-and-Pencil Minesweeper ». Proceedings of the AAAI Conference on Artificial Intelligence 36, n^o 11 (28 juin 2022) : 12819–25. http://dx.doi.org/10.1609/aaai.v36i11.21561.

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In this paper, we introduce a technique for AI generation of the Bullets puzzle, a paper-and-pencil variant of Minesweeper. Whereas traditional Minesweeper can be lost due to the need to guess mine or non-mine positions, our puzzle is fully deducible from a minimal clue set. Puzzle generation is based on analysis and optimization of solutions from a human-like reasoning engine that classifies types of deductions. Additionally, we provide insights to subjective puzzle quality, minimal clue sampling trade-offs, and optimal bullet density.

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David, Iulia Gabriela, Dana-Elena Popa et Mihaela Buleandra. « Pencil Graphite Electrodes : A Versatile Tool in Electroanalysis ». Journal of Analytical Methods in Chemistry 2017 (2017) : 1–22. http://dx.doi.org/10.1155/2017/1905968.

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Due to their electrochemical and economical characteristics, pencil graphite electrodes (PGEs) gained in recent years a large applicability to the analysis of various types of inorganic and organic compounds from very different matrices. The electrode material of this type of working electrodes is constituted by the well-known and easy commercially available graphite pencil leads. Thus, PGEs are cheap and user-friendly and can be employed as disposable electrodes avoiding the time-consuming step of solid electrodes surface cleaning between measurements. When compared to other working electrodes PGEs present lower background currents, higher sensitivity, good reproducibility, and an adjustable electroactive surface area, permitting the analysis of low concentrations and small sample volumes without any deposition/preconcentration step. Therefore, this paper presents a detailed overview of the PGEs characteristics, designs and applications of bare, and electrochemically pretreated and chemically modified PGEs along with the corresponding performance characteristics like linear range and detection limit. Techniques used for bare or modified PGEs surface characterization are also reviewed.

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Huang, Zhisen, Bo Wang, Zefan Lin, Kunhua Wen, Ziming Meng, Fangteng Zhang, Zhaogang Nie et al. « Newly reflective bi-function beam splitter by SiO2 pencil-like arrays on silver plate ». Optik 242 (septembre 2021) : 167289. http://dx.doi.org/10.1016/j.ijleo.2021.167289.

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Inose, Tomoko, Shuichi Toyouchi, Gang Lu, Kazuki Umemoto, Yuki Tezuka, Bozhang Lyu, Akito Masuhara et al. « Water-mediated polyol synthesis of pencil-like sharp silver nanowires suitable for nonlinear plasmonics ». Chemical Communications 55, n^o 77 (2019) : 11630–33. http://dx.doi.org/10.1039/c9cc04743c.

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Moulahi, A., et F. Sediri. « Pencil-like zinc oxide micro/nano-scale structures : Hydrothermal synthesis, optical and photocatalytic properties ». Materials Research Bulletin 48, n^o 10 (octobre 2013) : 3723–28. http://dx.doi.org/10.1016/j.materresbull.2013.05.116.

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Charlier, J. P., et P. van Dooren. « A Jacobi-like algorithm for computing the generalized Schur form of a regular pencil ». Journal of Computational and Applied Mathematics 27, n^o 1-2 (septembre 1989) : 17–36. http://dx.doi.org/10.1016/0377-0427(89)90359-2.

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Driessens, F. C. M., R. A. Terpstra, P. Bennema, J. H. M. Wöltgens et R. M. H. Verbeeck. « On the Possible Relation between Morphology and Precursors of the Crystallities in Calcified Tissues ». Zeitschrift für Naturforschung C 42, n^o 7-8 (1 août 1987) : 916–20. http://dx.doi.org/10.1515/znc-1987-7-831.

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Crystal structure data on hydroxyapatite, octocalcium phosphate and brushite have been used in order to predict their crystal morphology on the basis of the Hartman-Perdok theory. The predicted forms are pencil-like for hydroxyapatite, board-like for octocalcium phosphate and flattened needle-like for brushite. Although the biominerals in bone, dentine and tooth enamel have an apatite structure, their form is nbt pencil-like. This may partially be due to the fact that precursor phases are nucleated first in these tissues during mineralization and that these precursor phases are transformed later by topotactical reactions into compounds with apatite structure or that they serve as nuclei for ongrowth of apatite. The form of the mineral particles in mature bone and dentin is board-like which indicates that octocalcium phosphate might be their precursor phase. However, the form of the crystals in mature enamel is flattened needle-like which indicates that brushite is their precursor phase. It is argued that a possible difference in the nature of the precursor phase may be due primarily to differences in the cellular activities of the odontoblasts and osteoblasts as compared to those of the ameloblasts, and secondarily to matrix effects. In both cases, however, the main effect of the matrix seems to be that it acts as a mechanical barrier leading to a limited form and size and, of course, a certain orientation of the crystals, rather than as an agent for heterogeneous nucleation. The validity of the present considerations depends as yet on the assumption that the ions and molecules occurring in body fluids do not dominate the habit of calcium phosphate crystals.

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Williamson, Zoe, Gary J. Keever, J. Raymond Kessler et John W. Olive. « Developmental Stage of ‘Snow White’ Indian Hawthorn and ‘Sky Pencil’ Holly Affects Response to Cyclanilide ». Journal of Environmental Horticulture 33, n^o 4 (1 décembre 2015) : 148–54. http://dx.doi.org/10.24266/0738-2898-33.4.148.

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A study was conducted to determine the role that plant developmental stage (DS) has on the efficacy of cyclanilide (CYC), a plant growth regulator (PGR) with cytokinin-like properties. In 2007, single foliar applications of 200 ppm CYC were applied to ‘Snow White’ Indian hawthorn (Rhaphiolepis indica (L.) Lindl. Ex Ker Gawl.) and ‘Sky Pencil’ holly (Ilex crenata Thunb.) at progressively later stages of lateral shoot development: bud break (DS 1), active shoot elongation (DS 2), or to recently matured shoots (DS 3). The experiment was repeated in 2008 and included an additional application to Sky Pencil holly before bud break (DS 0). In 2007 and 2008, Snow White Indian hawthorn treated with CYC at all DS formed more shoots than untreated plants, except in summer 2008 (DS 3 only) and fall 2008 (DS 1 only). New shoot counts of CYC-treated Indian hawthorn were 53 to 67% and 46 to 65% higher than those of untreated plants in summer and fall, respectively, in 2007 and 26 to 39% and 29 to 48% higher in summer and fall, respectively, in 2008. In the fall of 2008, the only effect of DS on shoot counts of Indian hawthorn was that plants treated at DS 3 formed 29% more new shoots than plants treated at DS 1; DS had no effect on shoot counts in 2007. Symptoms of foliar injury to Indian hawthorn included reddening, chlorosis, and cupping of new growth that appeared between 15 and 30 days after treatment (DAT) and, although not quantified in 2007, were generally less severe and more transitory as DS increased. In 2007, foliar injury lasted until about 90 to 120 DAT in DS 2 and DS 3 plants, but was more persistent in DS 1 plants. In 2008, foliar injury was also transient, regardless of DS, but was highest when CYC was applied at DS 1 or DS 2. CYC-treated Sky Pencil holly had formed more shoots than untreated plants by summer and fall of 2007. Although Sky Pencil holly treated at DS 2 in 2007 formed fewer shoots than DS 1 plants in fall, quality ratings were higher due to a larger canopy that was dense and compact. In the fall of 2008, shoot counts of CYC-treated Sky Pencil holly were greater than those of untreated plants, regardless of DS, and there were no effects of DS on shoot counts. Quality ratings of Sky Pencil holly treated at DS 2 or DS 3, but not at DS 0 and DS 1, were higher than those of untreated plants. In both years of the study, symptoms of foliar injury on Sky Pencil holly were minimal, suggesting a relatively high tolerance to foliar-applied CYC, and all plants were considered marketable.

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Badgujar, Prashant S., Sudhir S. Arbuj, Jagannath M. Mali, Sunit B. Rane et Uttam P. Mulik. « A Simple Protocol for Synthesis of Pencil Like ZnO Rods and Their Photocatalytic Performance Study ». Journal of Nanoengineering and Nanomanufacturing 4, n^o 1 (1 mars 2014) : 65–70. http://dx.doi.org/10.1166/jnan.2014.1172.

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Yang, Y. H., X. Y. Chen, Y. Feng et G. W. Yang. « Physical Mechanism of Blue-Shift of UV Luminescence of a Single Pencil-Like ZnO Nanowire ». Nano Letters 7, n^o 12 (décembre 2007) : 3879–83. http://dx.doi.org/10.1021/nl071849h.

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Zheng-Lin, Li, Deng Shao-Zhi, Xu Ning-Sheng, Liu Fei et Chen Jun. « Enhanced Field Emission from Large-Area Arrays of W 18 O 49 Pencil-Like Nanostructure ». Chinese Physics Letters 27, n^o 6 (juin 2010) : 068504. http://dx.doi.org/10.1088/0256-307x/27/6/068504.

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Yang, Qing, Ming Li, Changfeng Zeng et Lixiong Zhang. « Hydrothermal Synthesis of Pencil-like SAPO-5 and Observation of Its Reversed Crystal-Growth Process ». Chemistry - A European Journal 19, n^o 1 (19 novembre 2012) : 365–71. http://dx.doi.org/10.1002/chem.201202592.

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Plewik, Szymon, et Marta Walczyńska. « The Monoid Consisting of Kuratowski Operations ». Journal of Mathematics 2013 (2013) : 1–9. http://dx.doi.org/10.1155/2013/289854.

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The paper fills gaps in knowledge about Kuratowski operations which are already in the literature. The Cayley table for these operations has been drawn up. Techniques, using only paper and pencil, to point out all semigroups and its isomorphism types are applied. Some results apply only to topology, and one cannot bring them out, using only properties of the complement and a closure-like operation. The arguments are by systematic study of possibilities.

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Kenney, Margaret J., et Stanley J. Bezuszka. « Just Five Does It : Using Five Numbers to Make Patterned Squares ». Mathematics Teaching in the Middle School 12, n^o 8 (avril 2007) : 436–41. http://dx.doi.org/10.5951/mtms.12.8.0436.

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All students can succeed in creating mathematical art. This article offers some ideas about creating mathematical art based on number patterns. It includes a process that integrates number and geometry and results in attractive and useful patterned squares. Students may perform the activity with paper and pencil or use computer software like The Geometer's Sketchpad. The diagrams in this article were completed using Sketchpad. The article also features the use of conjecturing as an important element in mathematics instruction.

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Merriman, William E., Paul D. Scott et John Marazita. « An appearance-function shift in children's object naming ». Journal of Child Language 20, n^o 1 (février 1993) : 101–18. http://dx.doi.org/10.1017/s0305000900009144.

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ABSTRACTThe relative importance of appearance and potential function in children's object naming was examined. Potential function is an object capability that may not be currently realized (e.g. an empty mug has the potential to hold coffee). In Study 1, sixteen children from each of three age groups (3;8, 4;8, and 6;1) were taught novel names for unfamiliar objects; they then had to decide whether these applied to items that resembled the training objects in either appearance or potential function. The youngsters were also shown deceptive objects (e.g., an eraser that looked like a pencil) and had to choose between familiar appearance and function names for them (e.g., pencil or eraser). The frequency of function-based responding in both tasks increased with age. In Study 2, the name training procedure was revised so that equal emphasis was given to both apparent and functional features. The main results of the first study were replicated. Neither study obtained evidence of a strong relation between the appearance—function shift and increased under-standing of the appearance—reality distinction.

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Nathani, Akash, Nandimalla Vishnu et Chandra S. Sharma. « Review—Pencil Graphite Electrodes as Platform for Enzyme and Enzyme-Like Protein Immobilization for Electrochemical Detection ». Journal of The Electrochemical Society 167, n^o 3 (2 janvier 2020) : 037520. http://dx.doi.org/10.1149/2.0202003jes.

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Bhuyan, Diganta, Banajit Malakar, Sudhir S. Arbuj et Lakshi Saikia. « Flower shaped homocentric pencil like ZnO nanorod bundles : synthesis, characterisation and study of their photocatalytic activity ». RSC Advances 4, n^o 16 (2014) : 8256. http://dx.doi.org/10.1039/c3ra45818k.

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Moayyer, H. Akbari, A. Ataie, Amin Nozari et Saeed Jafari. « One-Step Synthesis of BaCO₃ Nano-Particles via Mechano-Chemical Method ». Advanced Materials Research 622-623 (décembre 2012) : 985–89. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.985.

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Barium carbonate (BaCO3) nano-particles were synthesized from the mixture of Ba(OH)2.8H2O and Na2CO3 by mechano-chemical route without any subsequent heat treatment of the as-milled powders. Effects of milling time and addition of process control agents (PCA) on the phase composition and morphology of products have been investigated. The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results show that BaCO3 nano-particles were synthesized only after 10 minutes of mechanical milling and phase evolution was not taken place by further milling. SEM results indicated that pencil-like and globular-like were two major morphologies of the particles. Addition of stearic acid as a PCA resulted in homogenized globular-like nano-particles with a mean particle size of 54 nm.

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