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Journal articles on the topic 'LASIS'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Yang, Aping, Shanshan Tian, and Ping Guo. "Relativistic density functional investigation of the mono-lanthanum silicide clusters LaSin (n=1-6): geometries, electronic properties and IR spectra." Journal of Physics: Conference Series 2393, no. 1 (December 1, 2022): 012023. http://dx.doi.org/10.1088/1742-6596/2393/1/012023.

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Abstract The mono-lanthanum silicide clusters LaSin (n=1-6) have been studied adopting the relativistic density functional calculation with generalized gradient approximation. Considering different spin configurations, we calculated and discussed the equilibrium geometries, charge populations, the HOMO-LUMO gaps, as well as infrared (IR) absorption spectra of LaSin (n=1-6) clusters. It is found that: the lowest-lying LaSin (n=1-6) clusters basically maintain a similar framework to the low-lying Sin+1 clusters, and the La atoms prefer the surface sites. The relative stabilities are investigated based on the calculation of fragmentation energies and, showing that LaSi2, LaSi4, and LaSi5 clusters have enhanced stabilities. Charge populations analysis shows that the charges transfer from La atom to Sin framework and the La atom acts as an electron donor. HOMO-LUMO gaps indicate that LaSi2 and LaSi5 clusters have higher chemical stabilities. IR absorption spectrum and vibrational mode analysis show that the highest frequency absorption peaks all correspond to the breathing mode of the silicon framework, and the characteristic infrared absorption peaks caused by La atom vibration, except for LaSi dimer, all appeared in the low-frequency region.

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2

Mokhtarnejad, Mahshid, Erick L. Ribeiro, Dibyendu Mukherjee, and Bamin Khomami. "3D printed interdigitated supercapacitor using reduced graphene oxide-MnO_x/Mn₃O₄ based electrodes." RSC Advances 12, no. 27 (2022): 17321–29. http://dx.doi.org/10.1039/d2ra02009b.

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3

Scaramuzza, Stefano, Stefano Agnoli, and Vincenzo Amendola. "Metastable alloy nanoparticles, metal-oxide nanocrescents and nanoshells generated by laser ablation in liquid solution: influence of the chemical environment on structure and composition." Physical Chemistry Chemical Physics 17, no. 42 (2015): 28076–87. http://dx.doi.org/10.1039/c5cp00279f.

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4

Hu, Sheng, Kangming Cheng, Erick L. Ribeiro, Kiman Park, Bamin Khomami, and Dibyendu Mukherjee. "A facile and surfactant-free route for nanomanufacturing of tailored ternary nanoalloys as superior oxygen reduction reaction electrocatalysts." Catalysis Science & Technology 7, no. 10 (2017): 2074–86. http://dx.doi.org/10.1039/c7cy00073a.

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5

Vogel, John S. "LASIS: The laser assisted sputter ion source." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 438 (January 2019): 89–95. http://dx.doi.org/10.1016/j.nimb.2018.07.015.

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6

Hu, Sheng, Erick L. Ribeiro, Seyyed Ali Davari, Mengkun Tian, Dibyendu Mukherjee, and Bamin Khomami. "Hybrid nanocomposites of nanostructured Co3O4 interfaced with reduced/nitrogen-doped graphene oxides for selective improvements in electrocatalytic and/or supercapacitive properties." RSC Advances 7, no. 53 (2017): 33166–76. http://dx.doi.org/10.1039/c7ra05494g.

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Hybrid nanocomposites (HNCs) of Co₃O₄ nanoparticles/nanorods embedded in reduced/nitrogen-doped graphene oxide, manufactured via laser ablation synthesis in solution (LASiS), exhibit selective electrocatalytic/supercapacitive properties.

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7

Hu, Sheng, Chad Melton, and Dibyendu Mukherjee. "A facile route for the synthesis of nanostructured oxides and hydroxides of cobalt using laser ablation synthesis in solution (LASIS)." Phys. Chem. Chem. Phys. 16, no. 43 (2014): 24034–44. http://dx.doi.org/10.1039/c4cp03018d.

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Pulsed laser ablation synthesis in solution (LASIS) is used as a facile, “green” synthesis route to produce cobalt oxide/hydroxide nanoparticles (NPs) with tailored size, morphology and structure at different laser fluences, wavelengths (532 and 1064 nm) and solvent conditions.

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8

Kumar, Brijesh, Gagandeep Kaur, Rajesh Kumar Verma, A. Bahadur, and S. B. Rai. "Bismuth functionalized PVA film: field, plasmonic and pH effect on PVA originated broad photoluminescence." RSC Advances 6, no. 32 (2016): 26984–92. http://dx.doi.org/10.1039/c5ra27441a.

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Bismuth (Bi) NPs have been synthesized by Laser Ablation Synthesis in Solution (LASiS) at different pH in different aqueous solutions [viz. H₂O (H), H₂O + NaOH (HN), and H₂O + HCl (HC)].

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9

Zulfajri, Muhammad, Wei-Jie Huang, Genin-Gary Huang, and Hui-Fen Chen. "Effects of Different Surfactant Charges on the Formation of Gold Nanoparticles by the LASiS Method." Materials 14, no. 11 (May 29, 2021): 2937. http://dx.doi.org/10.3390/ma14112937.

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The laser ablation synthesis in solution (LASiS) method has been widely utilized due to its significant prospects in laser microprocessing of nanomaterials. In this study, the LASiS method with the addition of different surfactant charges (cationic CTAB, nonionic TX-100, and anionic SDS) was used to produce Au NPs. An Nd:YAG laser system at 532 nm excitation with some synthetic parameters, including different laser fluences, ablation times, and surfactant concentrations was performed. The obtained Au NPs were characterized by UV-Vis spectroscopy, transmission electron microscopy, and zeta potential analyzer. The Au NPs exhibited the maximum absorption peak at around 520 nm for all samples. The color of Au NPs was changed from red to reddish by increasing the laser fluence. The surfactant charges also played different roles in the Au NPs’ growth during the synthesis process. The average sizes of Au NPs were found to be 8.5 nm, 5.5 nm, and 15.5 nm with the medium containing CTAB, TX-100, and SDS, respectively. Besides, the different surfactant charges induced different performances to protect Au NPs from agglomeration. Overall, the SDS and CTAB surfactants exhibited higher stability of the Au NPs compared to the Au NPs with TX-100 surfactant.

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10

MA Dong-mei, 马冬梅, and 马彩文 MA Cai-wen. "An Algorithm of 3D-SPECK for LASIS′s Hyperspectral Image Compression." ACTA PHOTONICA SINICA 39, no. 7 (2010): 1248–52. http://dx.doi.org/10.3788/gzxb20103907.1248.

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11

Sportelli, Maria, Margherita Izzi, Annalisa Volpe, Maurizio Clemente, Rosaria Picca, Antonio Ancona, Pietro Lugarà, Gerardo Palazzo, and Nicola Cioffi. "The Pros and Cons of the Use of Laser Ablation Synthesis for the Production of Silver Nano-Antimicrobials." Antibiotics 7, no. 3 (July 28, 2018): 67. http://dx.doi.org/10.3390/antibiotics7030067.

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Silver nanoparticles (AgNPs) are well-known for their antimicrobial effects and several groups are proposing them as active agents to fight antimicrobial resistance. A wide variety of methods is available for nanoparticle synthesis, affording a broad spectrum of chemical and physical properties. In this work, we report on AgNPs produced by laser ablation synthesis in solution (LASiS), discussing the major features of this approach. Laser ablation synthesis is one of the best candidates, as compared to wet-chemical syntheses, for preparing Ag nano-antimicrobials. In fact, this method allows the preparation of stable Ag colloids in pure solvents without using either capping and stabilizing agents or reductants. LASiS produces AgNPs, which can be more suitable for medical and food-related applications where it is important to use non-toxic chemicals and materials for humans. In addition, laser ablation allows for achieving nanoparticles with different properties according to experimental laser parameters, thus influencing antibacterial mechanisms. However, the concentration obtained by laser-generated AgNP colloids is often low, and it is hard to implement them on an industrial scale. To obtain interesting concentrations for final applications, it is necessary to exploit high-energy lasers, which are quite expensive. In this review, we discuss the pros and cons of the use of laser ablation synthesis for the production of Ag antimicrobial colloids, taking into account applications in the food packaging field.

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12

Ma Dongmei, 马冬梅, 马彩文 Ma Caiwen, and 罗翠华 Luo Cuihua. "A Compression Algorithm of AT-3DSPIHT for LASIS′s Hyperspectral Image." Acta Optica Sinica 30, no. 2 (2010): 378–81. http://dx.doi.org/10.3788/aos20103002.0378.

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13

Almeida, J. C., E. J. C. Davim, I. M. Miranda Salvado, M. H. V. Fernandes, F. M. Costa, F. Rey-García, L. M. Francisco, and A. B. Lopes. "Red ruby glass from gold nanoparticles obtained by LASiS – a new approach." Journal of Non-Crystalline Solids 537 (June 2020): 119987. http://dx.doi.org/10.1016/j.jnoncrysol.2020.119987.

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14

Sportelli, Maria Chiara, Antonio Ancona, Annalisa Volpe, Caterina Gaudiuso, Valentina Lavicita, Valerio Miceli, Amalia Conte, Matteo Alessandro Del Nobile, and Nicola Cioffi. "A New Nanocomposite Packaging Based on LASiS-Generated AgNPs for the Preservation of Apple Juice." Antibiotics 10, no. 7 (June 22, 2021): 760. http://dx.doi.org/10.3390/antibiotics10070760.

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Designing bioactive materials, with controlled metal ion release, exerting a significant biological action and associated to low toxicity for humans, is nowadays one of the most important challenges for our community. The most looked-for nanoantimicrobials are capable of releasing metal species with defined kinetic profiles, either by slowing down or inhibiting bacterial growth and pathogenic microorganism diffusion. In this study, laser ablation synthesis in solution (LASiS) has been used to produce bioactive Ag-based nanocolloids, in isopropyl alcohol, which can be used as water-insoluble nano-reservoirs in composite materials like poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Infrared spectroscopy was used to evaluate the chemical state of pristine polymer and final composite material, thus providing useful information about synthesis processes, as well as storage and processing conditions. Transmission electron microscopy was exploited to study the morphology of nano-colloids, along with UV-Vis for bulk chemical characterization, highlighting the presence of spheroidal particles with average diameter around 12 nm. Electro-thermal atomic absorption spectroscopy was used to investigate metal ion release from Ag-modified products, showing a maximum release around 60 ppb, which ensures an efficient antimicrobial activity, being much lower than what recommended by health institutions. Analytical spectroscopy results were matched with bioactivity tests carried out on target microorganisms of food spoilage.

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15

Sportelli, Maria Chiara, Margherita Izzi, Annalisa Volpe, Valentina Lacivita, Maurizio Clemente, Cinzia Di Franco, Amalia Conte, Matteo Alessandro Del Nobile, Antonio Ancona, and Nicola Cioffi. "A new nanocomposite based on LASiS-generated CuNPs as a preservation system for fruit salads." Food Packaging and Shelf Life 22 (December 2019): 100422. http://dx.doi.org/10.1016/j.fpsl.2019.100422.

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16

Wiguna, P. A., N. Yudasari, D. Djuhana, and C. Imawan. "Synthesis of ZnO nanoparticles in polyvinyl alcohol solutions using laser assisted synthesis in solution (LASiS) method." Journal of Physics: Conference Series 1317 (October 2019): 012061. http://dx.doi.org/10.1088/1742-6596/1317/1/012061.

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17

Freeland, B., R. McCann, G. Alkan, B. Friedrich, G. Foley, and D. Brabazon. "Stable nano-silver colloid production via Laser Ablation Synthesis in Solution (LASiS) under laminar recirculatory flow." Advances in Materials and Processing Technologies 6, no. 4 (March 15, 2020): 677–85. http://dx.doi.org/10.1080/2374068x.2020.1740877.

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18

Davari, Seyyed Ali, Sheng Hu, Erick L. Ribeiro, and Dibyendu Mukherjee. "Rapid elemental composition analysis of intermetallic ternary nanoalloys using calibration-free quantitative Laser Induced Breakdown Spectroscopy (LIBS)." MRS Advances 2, no. 55 (2017): 3371–76. http://dx.doi.org/10.1557/adv.2017.303.

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ABSTRACTIntermetallic ternary nanoalloys (NA) have increasingly gained prominence as excellent catalysts. But, their size, morphology and chemical compositions affect their catalytic and interfacial activities significantly. In this study, we present laser-induced breakdown spectroscopy (LIBS) for rapid quantitative elemental composition characterization of ternary NAs with different elemental ratios. Specifically, we use a calibration-free approach with LIBS to estimate the elemental ratios of PtCuCo ternary NAs with various stoichiometric ratios synthesized via our in-house laser ablation synthesis in solution-galvanic replacement reactions (LASiS-GRR) technique. The size and morphology of the samples are determined from transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) measurements. The LIBS quantitative estimations for the NA samples are compared with results from inductively coupled plasma-optical emission spectroscopy (ICP-OES). The elemental ratio results of quantitative LIBS show good agreement with ICP-OES results, while being devoid of any external standard requirements or extensive sample preparations.

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19

Gavim, Anderson E. X., Mariana Richelle Pereira da Cunha, Edna Regina Spada, Thiago Neves Machado, Fabio Seiti Hadano, Arandi Ginane Bezerra, Wido Herwig Schreiner, et al. "Water-suspended MoO3 nanoparticles prepared by LASIS and fast processing as thin film by ultrasonic spray deposition." Solar Energy Materials and Solar Cells 200 (September 2019): 109986. http://dx.doi.org/10.1016/j.solmat.2019.109986.

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20

Gierczak, Sylwia Katarzyna. "The role of questionnaires in the reconstruction of the linguacultural view of respect (szacunek) in contemporary Polish." Etnolingwistyka. Problemy Języka i Kultury 33 (October 12, 2021): 237. http://dx.doi.org/10.17951/et.2021.33.237.

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The aim of the study is to present the role of empirical research in the reconstruction of the linguacultural image of axiologically loaded concepts and socially determined connotations. The article relates to methodological assumptions and findings of ethnolinguistics, where the reconstruction of the conceptualisation of particular notions is based on the interpretation of three types of data: (i) the language system, (ii) questionnaires, and (iii) texts. This is the approach adopted in the report Język – wartości – polityka [Language – values – politics] (JWP 2006), and then in the Axiological Lexicon of Slavs and Their Neighbours (LASiS 1-5, 2015-2019), compiled by the team supervised by Jerzy Bartmiński. This study presents the results of a questionnaire regarding respect (Polish szacunek), conducted among one hundred students from five universities in Lublin. Respondents were asked to answer the question: “What, in your opinion, is the essence of respect?”. The data obtained from first-hand sources enable a reconstruction of the students’ image of true respect in the Polish language in an aspectual view.

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21

Reus, Thamile Luciane, Thiago Neves Machado, Arandi Ginane Bezerra, Bruna Hilzendeger Marcon, Ariane Caroline Campos Paschoal, Crisciele Kuligovski, Alessandra Melo de Aguiar, and Bruno Dallagiovanna. "Dose-dependent cytotoxicity of bismuth nanoparticles produced by LASiS in a reference mammalian cell line BALB/c 3T3." Toxicology in Vitro 53 (December 2018): 99–106. http://dx.doi.org/10.1016/j.tiv.2018.07.003.

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22

Gasevic, Dragan, Shane Dawson, Negin Mirriahi, and Phillip D. Long. "Learning Analytics – A Growing Field and Community Engagement." Journal of Learning Analytics 2, no. 1 (July 16, 2015): 1–6. http://dx.doi.org/10.18608/jla.2015.21.1.

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This editorial discusses events that marked the period since the publication of the previous issue – the 5th International Conference on Learning Analytics and Knowledge (LAK 2015), Learning Analytics Summer Institutes (LASIs 2015), and Learning Analytics Policy Briefing in the European Parliament. This period saw releases of two important publications for system-wide implementation of learning analytics in higher education published by Jisc and the Australian Government’s Office for Learning and Teaching. An important recognition of the maturation of the field of learning analytics is the recent publication of the 2015 Google Scholar Metrics identifying the LAK proceedings as the only conference proceedings among the 20 most cited publication venues in educational technology. Building bridges for enhancing impact is another important activity for the field maturation through developing linkages of learning analytics with educational data mining, user modeling, the learning sciences, technology enhanced learning, cyber-learning, and learning at scale. This editorial also introduces a special section published in this issue dedicated to the exploration of connections between self-regulated learning and learning analytics, introduces two regular research papers featured in this issue and describes several special sections that will be published in future issues of the journal.

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23

Mulder, Ashley J., Rhys D. Tilbury, Phillip J. Wright, Thomas Becker, Massimiliano Massi, and Mark A. Buntine. "Laser-Based Formation of Copper Nanoparticles in Aqueous Solution: Optical Properties, Particle Size Distributions, and Formation Kinetics." Australian Journal of Chemistry 70, no. 11 (2017): 1212. http://dx.doi.org/10.1071/ch17363.

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We explore the formation kinetics, optical absorption spectra, and particle size distributions of copper nanoparticles (CuNPs) formed by direct laser ablation from the bulk metal via a process we refer to as Laser Ablation Synthesis in Solution (LASiS). Comparisons are made between CuNPs formed in pure water versus those formed in the presence of 1 × 10−4 M solutions of the N-donor ligands 4,4′-bipyridine (4,4′Bipy) and 1H-5-(4-pyridyl)tetrazole (T-4Py). CuNPs formed in pure water and in the presence of 4,4′Bipy display similar UV-visible absorption spectra and very similar particle size distributions. In comparison, CuNPs formed in the presence of T-4Py display significantly different absorption properties, with the surface plasmon resonance transition blue-shifted by ∼55 nm, and a much smaller and narrower particle size distribution compared with the former samples. Based on previous literature reports, it is possible to ascribe these differences to differences in the CuNP surface oxidation states for samples prepared in the presence of T-4Py. However, an analysis of the formation kinetics of all three samples indicates near-identical behaviour.

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24

Hu, Sheng, Mengkun Tian, Erick L. Ribeiro, Gerd Duscher, and Dibyendu Mukherjee. "Tandem laser ablation synthesis in solution-galvanic replacement reaction (LASiS-GRR) for the production of PtCo nanoalloys as oxygen reduction electrocatalysts." Journal of Power Sources 306 (February 2016): 413–23. http://dx.doi.org/10.1016/j.jpowsour.2015.11.078.

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25

Babaei, Reza, and Hadi Savaloni. "Influence of laser wavelength on surface enhanced Raman spectroscopy using Mn based nano-particles produced by laser ablation synthesis in 4,4′ Bipyridine solution (LASiS)." Optik 242 (September 2021): 167276. http://dx.doi.org/10.1016/j.ijleo.2021.167276.

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26

Jordan, David K. "Esperanto and Esperantism." Language Problems and Language Planning 11, no. 1 (January 1, 1987): 104–25. http://dx.doi.org/10.1075/lplp.11.1.08jor.

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SUMARIO Esperanto y esperantismo: Simbolo y motivatión en el mouimiento por la equidad lingüistica Una manera de lograr un mayor grado de equidad linguistica es el uso de una lengua auxiliar internacional creada con tal fin. El esperanto es la lengua artificial internacional más evidente. Sólo el esperanto, a diferencia de cientos de esquemas, ha devenido en lengua de una comunidad hablante significativa. ?Por qué? En sus inicios el esperanto estuvo protegido de las tendencias reformistas y divisorias gracias (1 ) a la opinión general de que el volapük, un proyecto anterior, fracasó debido a las constantes reformas y (2) al surgimiento del ido, una rama del esperanto, que alejó posibles reformadores del proprio movimiento esperantista, dejando a los visionarios sociales en vez de los visionarios lingüistas. Actualmente (como en el pasado) las corresponencias simbólicas que asume en diferentes contextos sociales y culturales, son una clave importante para entender las diferencias de interés en el esperanto. Éstas son discutidas especialmente en relación al los Estados Unidos. RESUMO Esperanto kaj esperantismo: Simboloj kaj motivoj en movado por lingva egaleco Unu ilo por estigi lingvan egalecon estas intence kreita internacia helplingvo. La plej videbla artefarita internacia lingvo estas Esperanto. Nur Esperanto, malsimile al centoj da aliaj projektoj, fariĝis lingvo de signifa lingvokomunumo. Kial? Komence Esperanton kontraŭ disigaj tendencoj reformemaj ŝirmis (1) la ĝenerala kompreno, ke Volapuko malsukcesis pro konstantaj reformoj, kaj (2) la ekesto de Ido, kiu allogis reformemulojn. Tio lasis al la centra movado idealistojn sociajn, ne lingvistikajn. Hodiaŭ, samkiel antaŭe, grava ŝlosilo por kompreni la distribuon de intereso pri Esperanto estas ĝiaj simbolaj nuancoj en diversaj sociaj kaj kulturaj medioj. Tiuj ĉi pritraktiĝas rilate precipe al Usono.

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27

Wunderlich, C., D. Guberman, R. Paoletti, A. Rugliancich, and A. Passeri. "Large-Area SiPM Pixels (LASiPs) in SPECT." Journal of Instrumentation 17, no. 07 (July 1, 2022): C07021. http://dx.doi.org/10.1088/1748-0221/17/07/c07021.

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Abstract A standard camera for Single Photon Emission Computed Tomography (SPECT) contains 50–100 photomultiplier tubes (PMTs) that occupy at least 50% of its volume. It is shielded by a thick layer of lead which makes it heavy and bulky. Replacing PMTs by silicon photomultipliers (SiPMs) could significantly reduce the weight and size of a SPECT camera. However, the main obstacle is the limited size of SiPMs: even with the largest commercially available SiPM of 6 × 6 mm2 a few thousand channels would be needed to fill a camera. As a solution, we propose to use Large Area SiPM Pixels (LASiPs) which are built by summing the currents of several SiPMs into a single output. We developed a LASiP prototype summing 8 SiPMs using the MUSIC ASIC. To test the feasibility of using this solution in SPECT, we built a proof-of-concept micro camera that consisted of four of our LASiP prototypes coupled to a 40 × 40 × 8 mm3 NaI(Tl) crystal. We were able to reconstruct simple images of a 99m Tc capillary with an intrinsic spatial resolution of ∼2 mm and an energy resolution of ∼11.6%. We also simulated the system with Geant4, finding a good agreement with our experimental results. The simulations were extended to a larger camera, aiming to study the impact of pixel size, shape and noise.

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28

Istomin, N., and L. Karyakina. "LASYS-2016." Photonics Russia, no. 6 (2016): 54–69. http://dx.doi.org/10.22184/1993-7296.2016.60.6.54.69.

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Schlote, T., and M. Kynigopoulos. "LASIK und Femto-LASIK." Augenheilkunde up2date 6, no. 03 (August 5, 2016): 211–21. http://dx.doi.org/10.1055/s-0042-105221.

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Schlote, T., and M. Kynigopoulos. "LASIK und Femto-LASIK." Klinische Monatsblätter für Augenheilkunde 233, no. 09 (August 5, 2016): e29-e39. http://dx.doi.org/10.1055/s-0033-1358236.

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Die LASIK/Femto-LASIK stellt heutzutage das am meisten eingesetzte, laserchirurgische Verfahren zur Korrektur von Fehlsichtigkeiten weltweit dar. Im richtigen Indikationsbereich führt es zu hervorragenden Ergebnissen und ist mit einem niedrigen Langzeitrisiko verbunden. Trotzdem kann das Verfahren nicht bei jedem eingesetzt werden und setzt eine sorgfältige Diagnostik und Patientenselektion voraus. Auf Aspekte der präoperativen Diagnostik und Vorbereitung von Patienten für refraktive Lasereingriffe sei u. a. auf den in dieser Zeitschrift ebenfalls publizierten Beitrag „Diagnostik in der refraktiven Chirurgie“ verwiesen 1.

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Liu, Chongxi, Lu Bai, Lan Ye, Junwei Zhao, Kai Yan, Wensheng Xiang, and Xiangjing Wang. "Nocardia lasii sp. nov., a novel actinomycete isolated from the cuticle of an ant (Lasius fuliginosus L)." Antonie van Leeuwenhoek 109, no. 11 (August 10, 2016): 1513–20. http://dx.doi.org/10.1007/s10482-016-0753-y.

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32

Ye, Min-jie, Cai-yuan Liu, Rong-feng Liao, Zheng-yu Gu, Bing-ying Zhao, and Yi Liao. "SMILE and Wavefront-Guided LASIK Out-Compete Other Refractive Surgeries in Ameliorating the Induction of High-Order Aberrations in Anterior Corneal Surface." Journal of Ophthalmology 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/8702162.

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Purpose. To compare the change of anterior corneal higher-order aberrations (HOAs) after laser in situ keratomileusis (LASIK), wavefront-guided LASIK with iris registration (WF-LASIK), femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK), and small incision lenticule extraction (SMILE).Methods. In a prospective study, 82 eyes underwent LASIK, 119 eyes underwent WF-LASIK, 88 eyes underwent FS-LASIK, and 170 eyes underwent SMILE surgery. HOAs were measured with Pentacam device preoperatively and 6 months after surgery. The aberrations were described as Zernike polynomials, and analysis focused on total HOAs, spherical aberration (SA), horizontal coma, and vertical coma over 6 mm diameter central corneal zone.Results. Six months postoperatively, all procedures result in increase of anterior corneal total HOAs and SA. There were no significant differences in the induced HOAs between LASIK and FS-LASIK, while SMILE induced fewer total HOAs and SA compared with LASIK and FS-LASIK. Similarly, WF-LASIK also induced less total HOAs than LASIK and FS-LASIK, but only fewer SA than FS-LASIK (P<0.05). No significant difference could be detected in the induced total HOAs and SA between SMILE and WF-LASIK, whereas SMILE induced more horizontal coma and vertical coma compared with WF-LASIK (P<0.05).Conclusion. FS-LASIK and LASIK induced comparable anterior corneal HOAs. Compared to LASIK and FS-LASIK, both SMILE and WF-LASIK showed advantages in inducing less total HOAs. In addition, SMILE also possesses better ability to reduce the induction of SA in comparison with LASIK and FS-LASIK. However, SMILE induced more horizontal coma and vertical coma compared with WF-LASIK, indicating that the centration of SMILE procedure is probably less precise than WF-LASIK.

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33

Hieftje, Gary M. "Atomic Emission Spectroscopy—It Lasts and Lasts and Lasts." Journal of Chemical Education 77, no. 5 (May 2000): 577. http://dx.doi.org/10.1021/ed077p577.

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Low, Jin Rong, Li Lim, Jane Chwee Wah Koh, Daniel Kai Peng Chua, and Mohamad Rosman. "Simultaneous Accelerated Corneal Crosslinking and Laser In situ Keratomileusis for the Treatment of High Myopia in Asian Eyes." Open Ophthalmology Journal 12, no. 1 (July 23, 2018): 143–53. http://dx.doi.org/10.2174/1874364101812010143.

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Background: LASIK Xtra is a recently described technique which combines LASIK and accelerated corneal cross-linking(CXL) in the same setting. Its long-term outcome in Asians with high myopia is not well described. Objectives: To compare the efficacy, predictability and safety of LASIK Xtra with LASIK in patients with high myopia. Method: This is a retrospective study comparing 50 consecutive eyes undergoing LASIK Xtra for the correction of high myopia and/or myopic astigmatism (-6.63 to -15.50 D manifest spherical equivalent) with a matched control group of 50 eyes undergoing LASIK alone for correction of high myopia (-6.00 to -12.25 D manifest spherical equivalent). Mean follow-up was 5.7 months (range, 1.5-13.3 months) for LASIK Xtra and 3.6 months (range, 1.7-4.2 months) for LASIK only. Outcome measures included Uncorrected Distance Visual Acuity (UDVA), Corrected Distance Visual Acuity (CDVA), refraction and intraoperative and postoperative complications. Results: At post-operative 3 months, all eyes achieved UDVA of 20/40 or better, and 80.0% of LASIK Xtra eyes achieved UDVA of 20/20 or better, compared to 66.0% of LASIK only eyes (p = 0.115). Efficacy indices were 0.99±0.17 for LASIK Xtra and 0.94±0.17 for LASIK only (p = 0.164). The proportion of eyes within ±0.50 D of attempted correction was 84% in the LASIK only group and 72% in the LASIK Xtra group at post-operative 3 months (p = 0.148). Safety indices were 1.11±0.19 and 1.11±0.18 in the LASIK Xtra and LASIK only groups, respectively (p = 0.735). Conclusion: LASIK Xtra achieved comparable safety, predictability and efficacy as LASIK in patients with high myopia. Good refractive stability was attained at 6-12 months. Further long term studies are required to determine whether simultaneous CXL is able to reduce postoperative LASIK keratectasia in high-risk individuals.

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Kulikova, I. L., S. M. Pikusova, and L. A. Avershina. "CHANGES IN THE STRESS-STRAIN STATE OF THE CORNEA AFTER CORRECTION OF HYPEROPIA BY LASIK AND FS-LASIK METHODS." Современные проблемы науки и образования (Modern Problems of Science and Education), no. 2 2021 (2021): 117. http://dx.doi.org/10.17513/spno.30658.

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Seifert, Bernhard. "Lasius platythorax n. sp. a Widespread Sibling Species of Lasius niger (Hymenoptera: Formicidae)." Entomologia Generalis 16, no. 1 (July 12, 1991): 69–81. http://dx.doi.org/10.1127/entom.gen/16/1991/69.

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Bonita Asyigah and Ani Ismail. "Accommodation Amplitude Before and After Laser In Situ Keratomiletus (LASIK) In Myopic Patients." Sriwijaya Journal of Ophthalmology 3, no. 1 (June 20, 2020): 1–18. http://dx.doi.org/10.37275/sjo.v3i1.43.

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ABSTRACT Introductions: Laser in situ Keratomileusis (LASIK) is the most common refractive surgery to treat myopia. One of the most common complain after this procedure is blurry near- vision. Objectives: To evaluate the role of accommodation amplitude (AA) in myopic patients before and after LASIK and its effect to blurry near-vision in myopic patients after LASIK Methods: Patients with myopia who underwent LASIK procedure in Sriwijaya Eye Center Hospital from January to February 2018 studied prospectively. AA was assessed before and after LASIK with 1 day, 1 week and 1 month. Myopia degree, intraocular pressure (IOP), age, gender, ablation and corneal profile were also assessed. Results: A total 52 eyes from 32 patients were included. Visual acuity (VA) of all sample were significantly improve in 1 day after LASIK (p 0,001). Mean AA in myopic patients before LASIK 9,25 D and AA 1 day after LASIK were all significantly decrease into 9,00D (p 0,012) which can cause in blurry near- vision after LASIK. In 1 month followed-up, mean AA is significantly improved into 11,00 D (p 0,000) with no complain. Other factor that affect the changing AA were corneal cell density (CD), IOP and AA before LASIK. Conclusions: There is significant AA difference in myopic patients before and after LASIK. Blurry near-vision after LASIK is caused by AA adaptation mechanism after LASIK.

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Fatima, Khushbu, Zahid Saddique, Syed Nishat Akram, and Aamir Furqan. "LASIK;." Professional Medical Journal 24, no. 02 (February 14, 2017): 293–95. http://dx.doi.org/10.29309/tpmj/2017.24.02.519.

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Objectives: To determine the effect of LASIK on tear film stability. Study Design:Cross sectional, prospective study. Setting: The study was conducted in D. G. Laser Vision andDiagnostic Center, D.G. Khan, South Punjab, Pakistan. Period: From March 2016 to September2016. Materials and Methods: One hundred patients (two hundred eyes) were selected forthis study. SPSS version 20 was used to analyze the data. Categorical variables presented asfrequency and percentages and numerical variables presented as mean ± standard deviation.Results: It is observed that values of tear break up time, Schimer I and Schimer II were decreasingat one week and one month post LASIK as compare to one week pre LASIK values. Mean tearbreak up time at one week of pre LASIK was 14.72 ± 1.08 seconds (P=0.000), at one week postLASIK was 13.64 ± 1.507 seconds (P=0.000) and at one month post LASIK was 13.02 ± 1.695seconds (P=0.000). Conclusion: Laser in situ keratomileusis (LASIK) significantly changestear film stability and tear secretions for at least one month post operatively.

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Wilson, Steven E. "LASIK." Cornea 17, no. 5 (September 1998): 459–67. http://dx.doi.org/10.1097/00003226-199809000-00001.

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Saleh, Dennis. "Lapis." Psychological Perspectives 56, no. 3 (July 2013): 355–58. http://dx.doi.org/10.1080/00332925.2013.815071.

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Lawless, Michael, and Christopher Hodge. "LASIK." International Ophthalmology Clinics 53, no. 1 (2013): 111–28. http://dx.doi.org/10.1097/iio.0b013e318271346e.

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Riesco Álvarez, Hipólito Benjamín. ""Iuppiter Lapis" y el "Lapis silex"." Estudios Humanísticos. Filología, no. 10 (December 1, 1988): 19. http://dx.doi.org/10.18002/ehf.v0i10.4340.

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<p>El Lapis silex y luppiter Lapis eran una misma piedra de sílice que se vería involucrada en las ceremonias de tratados y juramentos por ser un símbolo de Júpiter en dos de sus facetas, la de dios garante de pactos y juramentos y la de dios que gobierna el rayo. Esta relación con el dios del cielo podía otorgarle cierto valor sagrado, pero nunca hasta el punto de convertirla en un fetiche.</p><p>Lapis silex and luppiter Lapis were the same silica stone. It was used in the treaty and oath ceremonies because it was a symbol of Jupiter two facets: as god who guarantees pacts and oaths and as a god who controls the thunderbolt. This relation with the heaven god could give it some sacred value, but never to the point of turning it into a fetish.</p>

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Toth, Cynthia A., Ramin Mostafavi, Sharon Fekrat, Cynthia A. Toth, and Terry Kim. "LASIK and vitreous pathology after LASIK." Ophthalmology 109, no. 4 (April 2002): 624. http://dx.doi.org/10.1016/s0161-6420(02)00996-x.

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Liu, Chongxi, Chuanyu Han, Shanwen Jiang, Xueli Zhao, Yuanyuan Tian, Kai Yan, Xiangjing Wang, and Wensheng Xiang. "Streptomyces lasii sp. nov., a Novel Actinomycete with Antifungal Activity Isolated from the Head of an Ant (Lasius flavus)." Current Microbiology 75, no. 3 (November 8, 2017): 353–58. http://dx.doi.org/10.1007/s00284-017-1388-6.

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Zhao, Li-Quan, and Huang Zhu. "Contrast Sensitivity after Zyoptix Tissue Saving LASIK and Standard LASIK for Myopia with 6-Month Followup." Journal of Ophthalmology 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/839371.

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This control-matched comparative study evaluated changes in contrast sensitivity after Zyoptix tissue-saving (TS) LASIK and Planoscan standard LASIK (Technolas 217z, Bausch & Lomb) for myopia 6 months postoperatively. 102 TS LASIK-treated eyes were matched with 102 standard LASIK-treated eyes (divided into low, moderate, and high groups). There were no significant differences in refraction outcomes between the groups postoperatively. In high group, a significant reduction in contrast sensitivity after TS LASIK was found at high spatial frequencies (P<.05) under photopic conditions and at middle to high spatial frequencies (P<.05) under mesopic conditions. And significant reduction was also found in standard LASIK at high spatial frequency (P<.05) under mesopic conditions. The reduction was significantly lower in TS LASIK than that in standard LASIK at high spatial frequencies (P<.05) under mesopic conditions. TS LASIK was prone to reduce mesopic contrast sensitivity of high myopia at high spatial frequencies.

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Normah, Normah, Siti Nurajizah, and Arinda Salbinda. "Penerapan Data Mining Metode K-Means Clustering Untuk Analisa Penjualan Pada Toko Fashion Hijab Banten." Jurnal Teknik Komputer 7, no. 2 (July 16, 2021): 158–63. http://dx.doi.org/10.31294/jtk.v7i2.10553.

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Toko Helai merupakan sebuah toko yang bergerak dalam bidang penjualan fashion hijab, namun demikian dari berbagai jenis pakaian yang dijual tentu tidak semuanya yang laris terjual, ada juga yang kurang laris terjual. Data-data penjualan, pembelian barang maupun pengeluaran tidak terduga pada Toko Helai ini tidak tersusun dengan baik, sehingga data tersebut hanya berfungsi sebagai arsip bagi toko dan tidak dapat dimanfaatkan untuk pengembangan strategi pemasaran.Oleh karena itu perlu diterapkan data mining menggunakan metode K-Means pada Toko Helai. Metode K-Means dapat diterapkan pada Toko Helai untuk menentukan penjualan baju mana yang sangat laris, laris dan kurang laris. Penerapan metode K-Means pada toko Helai, yaitu dengan cara mengelompokan data stok baju. Kemudian memilih 3 cluster secara acak sebagai centroid awal. Setelah data pada setiap cluster tidak berubah-ubah, maka dapat diketahui hasil akhirnya yaitu yang sangat laris ada 11 artikel, yang laris ada 55 artikel dan 34 artikel untuk yang kurang laris. Kemudian Menerapkan metode K-Means pada Rapidminer dilakukan dengan memasukkan data stok produk yaitu stok awal, stok terjual dan stok akhir yang akan menjadi Database pada Ms.Excel, data tersebut kemudian dikoneksikan ke dalam Tools Rapidminer, dan akan diolah dan dibentuk K-means. Setelah itu, Rapidminer akan menghasilkan produk mana yang sangat laris, laris, dan kurang laris

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Akbar, Said Jalalul. "KAJIAN PENGARUH NILAI CBR SUBGRADE TERHADAP TEBAL PERKERASAN JALAN (Studi Komparasi CBR Kecamatan Nisam Antara, Kecamatan Sawang dan Kecamatan Kuta Makmur)." TERAS JURNAL 3, no. 2 (November 6, 2017): 138. http://dx.doi.org/10.29103/tj.v3i2.39.

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<p>Tanah dasar (subgrade) merupakan salah satu faktor yang sangat berperan dalam menentukan ukuran ketebalan dari lapis pekerasan. Tanah dasar pada setiap lokasi tidak sama dan sangat variatif tergantung dari spesifikasi tanah pada daerah tersebut. Semakin bagus kualitas tanah pada sebuah daerah maka semakin tinggi pula nilai CBR tanah tersebut. Penelitian ini ingin melihat sejauh mana perbedaan ukuran tebal perkerasan dengan menggunakan nilai CBR dari masing-masing lokasi yang berbeda. Hasil penelitian ini diharapkan dapat digunakan sebagai referensi dalam melakukan perencanaanperencanaan tebal lapis perkerasan nantinya. Dari hasil pengujian di lapangan diperoleh nilai rerata CBR dari masing-masing lokasi adalah Kecamatan Nisam Antara 38,94%, Kecamatan Sawang 38,80% dan Kecamatan Kuta Makmur 51,58%. Berdasarkan hasil perhitungan didapat tebal lapis permukaan untuk Kecamatan Nisam Antara sebesar 2 cm, lapis pondasi atas 20 cm dan lapis pondasi bawah 10 cm. Untuk Kecamatan Sawang tebal lapis permukaan 2,3 cm, lapis pondasi atas 20 cm dan lapis pondasi bawah 10 cm, sementara untuk Kecamatan Kuta Makmur tebal lapis permukaan 1,5 cm, lapis pondasi atas 20 cm dan lapis pondasi bawah 10 cm, sehingga dapat di simpulkan bahwa nilai CBR Kecamatan Kuta Makmur merupakan nilai CBR terbaik dari ketiga lokasi tersebut dan memberi penguruh yang signifikan terhadap tebal perkerasan sehingga lapis permukaan menjadi lebih tipis sehingga apabila dikonversi terhadap harga pengerjaannya menjadi lebih murah dan efisien</p><p><strong>Kata kunci:</strong> CBR, Subgrade, Tebal Perkerasan Jalan</p>

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Tang, Maolong, Yan Li, and David Huang. "Corneal Epithelial Remodeling after LASIK Measured by Fourier-Domain Optical Coherence Tomography." Journal of Ophthalmology 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/860313.

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Purpose. To quantify corneal epithelial thickness changes after myopic LASIK by OCT.Methods.Epithelial thickness before and after myopic LASIK were measured by a Fourier-domain OCT system. Average central (within 1 mm diameter) and paracentral epithelial thickness (5~6 mm diameter) before and after LASIK were compared. Correlation between central epithelial thickness change and laser spherical equivalent setting was evaluated. An epithelial smoothing constant was estimated based on a mathematical model published previously.Results.Nineteen eyes from 11 subjects were included in the study. Eyes had myopic LASIK ranging from −1.69 D to −6.75 D spherical equivalent. The average central epithelial thickness was 52.6 ± 4.1 μm before LASIK and 56.2 ± 4.3 μm 3 months after LASIK (p=0.002). The average paracentral epithelial thickness was 51.6 ± 6.6 μm before LASIK and 54.8 ± 4.3 μm 3 months after LASIK (p=0.007). The change in average central epithelial thickness was correlated with laser spherical equivalent (R2= 0.40,p=0.028). The epithelial smoothing constant was estimated to be 0.46 mm.Conclusions. Corneal epithelial thickens centrally and paracentrally after myopic LASIK. The extent of epithelial remodeling correlated with the amount of LASIK correction and could be predicted by a mathematical model.

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Kukoleva, L. V., E. A. Olevskaya, A. V. Guseva, O. A. Kostin, S. V. Rebrikov, A. I. Ovchinnikov, and N. A. Tonkikh. "Comparision of myopia correction outcomes after visx customvue wavefront-guided LASIK and conventional LASIK." Reflection, no. 2 (January 11, 2022): 20–23. http://dx.doi.org/10.25276/2686-6986-2021-2-20-23.

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Purpose. To compare visual and clinical outcomes of wavefront-guided VISX CustomVue (VISX, Santa Clara, CA) LASIK and conventional LASIK. Methods. This study retrospectively evaluated 130 eyes of 65 patients, including 40 eyes of 20 patients in the CustomVue group and 90 eyes of 45 patients in conventional LASIK group. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity, and refractive error were measured. Higher-order aberration (HOA) were measured by WaveScan system using a Hartmann-Shack sensor as their root mean square values (RMS HO), and individual Zernike coefficients of 3rd to 4th order before and 1 year after the surgery and compared using Mann-Whitney test or Student's t-test. Results. There was no significant difference in spherical equivalent between the groups. CV eyes showed superiority in number of eyes seeing 20/20 or better. RMS HO was less in CV group than that induced by conventional LASIK (0.37 ± 0.15 µm and 0.62 ± 0.26 µm, respectively). Preoperative mean RMS HO more than 0.3 µm was associated with a decrease in postoperative HOA in CV group. CV system induced significantly less spherical aberration (0.149 ± 0.157 µm and 0.364 ± 0.284 µm, respectively, р < 0,002). Conclusions. CustomVue seems to have better uncorrected visual acuity outcomes. It generally increases HOA, but statistically significant by less, compared with conventional LASIK. The most benefits have patients with RMS HO higher than 03 µm. Key words: CustomVue, conventional LASIK, wavefront-guided LASIK.

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Sastra, Marhadi. "KHARAKTERISTIK MARSHALL PADA CAMPURAN ASPHALTIC CONCRETE PADA PEMELIHARAAN JALAN DALAM KOTA BENGKALIS." INOVTEK POLBENG 8, no. 1 (August 8, 2018): 46. http://dx.doi.org/10.35314/ip.v8i1.271.

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Pemeliharaan jalan dalam Kota Bengkalis Tahun Anggaran 2015 dalam perencanaannya banyak menggunakan campuran jenis Asphaltic Concrete (Laston). Untuk mendapatkan suatu mutu Laston yang memenuhi syarat dan ekonomis, diperlukan serangkaian pengujian campuran di laboratorium. Berdasarkan Binamarga 2010 revisi 3, Aspal Beton (AC) terdiri dari tiga macam campuran, yaitu : Laston Lapis Aus (AC-WC), Laston Lapis Antara (AC-BC) dan Laston Lapis Pondasi (AC-Base). Pada penelitian ini menggunakan 2 macam campuran Aspal Beton (AC) yaitu Laston Lapis Aus (AC-WC) dan Laston Lapis Antara (AC-BC). Pembuatan sampel uji marshall terdiri dari beberapa variasi kadar aspal dengan jumlah total untuk Laston Lapis Aus (AC-WC) sebanyak 15 sampel dan Laston Lapis Antara (AC-BC) sebanyak 15 sampel. Dari hasil pengujian marshall didapatkan kharakteristik marshall untuk sampel Laston Lapis Aus (AC-WC) yang memenuhi persyaratan binamarga 2010 revisi 3 adalah variasi kadar aspal 6% dan 6,5% sedangkan untuk sampel Laston Lapis Antara (AC-BC) pada variasi kadar aspal 5,5%, 6%, dan 6,5%.Keyword : Campuran Aspal Beton (AC), Kadar Aspal, Kharakteristik Marshall

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