bluuebunny/crossref_metadata_2025 huggingface dataset:
Light Source for Coherent Raman Scattering Based on Spontaneous Four-Wave Mixing in Silicon Nitride Waveguides
Authors: Würthwein Thomas , Lupken Niklas M. , Epping Jörn P. , Boller Klaus-J. , Fallnich Carsten
Published: October 2020

We present a light source for coherent anti-Stokes Raman scattering, with the potential to be set up as an all-integrated device, based on spontaneous FWM in silicon nitride waveguides with only a single ultrafast pump source at 1030 nm wavelength.
Distinct Laser Dynamics from a Single Figure-Eight Laser with an Integrated Nonlinear Waveguide
Authors: Aadhi A. , Roztocki Piotr , Kovalev Anton V. , Kues Michael , Fischer Bennet , Reimer Christian , Zhang Yanbing , Wang Tao , Little Brent E. , Chu Sai T. , Wang Zhiming , Moss David J. , Viktorov Evgeny A. , Morandotti Roberto
Published: October 2020

We report a passive mode-locked laser system using a nonlinear amplifying loop mirror configuration with an integrated waveguide, capable of delivering different temporal pulse profiles with adjustable features from a single compact architecture.
Full-Wave Formalism for Soliton Propagation in Nonlinear Photonic Crystals
Authors: Jandieri Vakhtang , Khomeriki Ramaz , Werner Douglas H. , Berakdar Jamal , Erni Daniel
Published: October 2020

A full-wave theoretical formalism for the propagation of temporal solitons in 2D Photonic Crystal (PhC) waveguides based on a multi-harmonic treatment (full-wave modal analysis) of the nonlinear setup is presented.
Generalized model for refractive index of III-V semiconductors
Authors: Espinosa Daniel H. G. , Odungide Mfon , Awan Kashif M. , Dolgaleva Ksenia
Published: October 2020

We present an empirical model to calculate the refractive index of III-V semiconductors as a function of the band-gap and photon energies, by fitting the Wemple- DiDomenico model to the refractive index data of binary compounds.
Spontaneous symmetry breaking of Kerr cavity solitons
Authors: Xu Gang , Nielsen Alexander U. , Garbin Bruno , Fatome Julien , Hill Lewis , Oppo Gian-Luca , Murdoch Stuart G. , Erkintalo Miro , Coen Stéphane
Published: October 2020

We report numerical and experimental observations of spontaneous symmetry breaking of Kerr cavity solitons. We show that cavity solitons with mirror polarization states can co-exist and be individually addressed in a symmetric fiber ring resonator.
Transient Dynamics of Generation and Annihilation in Multi-soliton Regime in a Mode-Locked Ring Laser
Authors: Zeng Junjie , Sander Michelle Y.
Published: October 2020

The transient dynamics of generation and annihilation between a double pulsing and three-pulse regime in a mode-locked fiber laser reveal significant fluctuations for the emerging pulse and spectral breathing behavior during the decaying process.
Frequency-Multipath Hyperentangled Photons Generation Using Quasi-Phase-Matched Nonlinear Photonic Crystal
Authors: Xi Chaoxiang , Ding Yizhou , ji Bo , gong Xinbao , He Guangqiang
Published: October 2020

A quasi-phase-matched two-dimensional (2D) nonlinear photonic crystal (NPC) whose poling direction is perpendicular to the pump beam, is shown to generate frequency-multipath hyperentanglement where six paths are included.
Optical Deformation of Homogeneous and Core-shell Spherical Particles
Authors: Vennes Benjamin , Preston Thomas C.
Published: October 2020

The optical deformation of dielectric spheres caused by arbitrary electromagnetic beams is retrieved by applying a stress balance across the interface(s). Analytic expressions for the deformation are derived which allow for its exact calculation.
All-fibered high-quality low duty-cycle 40-GHz picosecond pulse source based on nonlinear compression of besselons
Authors: SHEVELEVA Anastasiia , FINOT Christophe
Published: October 2020

We experimentally demonstrate the generation of a 40-GHz train of pulses with a duration of 0.9 ps based on the nonlinear compression of besselon pulses in a highly-nonlinear normally dispersive fiber.
Spatially Modulated Femtosecond Laser Pulses Via Bubble-Scattering Processes in Liquid
Authors: Romashevskiy S. A. , Ashitkov S. I.
Published: October 2020

We report on producing circular ripple patterns on silicon in liquid using a pair of femtosecond laser pulses. The bubble, generated by the first pulse, results in high frequency spatial modulation of the second pulse via scattering processes.
Temporal Arago spot in nonlinear optical fibers
Authors: SHEVELEVA Anastasiia , RIGNEAULT Hervé , FINOT Christophe
Published: October 2020

We present a numerical and experimental demonstration of the emergence of a bright temporal spot in the initial shadow of a fully-coherent temporal signal. Impacts of nonlinearity and dispersion regimes are also investigated.
Onset and termination of sustained pulsation in an excitable microlaser with optical feedback
Authors: Ruschel Stefan , Krauskopf Bernd , Broderick Neil G. R.
Published: October 2020

We employ numerical continuation to determine the critical feedback strength of an excitable microlaser, described by the Yamada model, that allows for sustained pul-sation in the presence of optical feedback from an external reflecting mirror.
Exceptional Point Behavior of Non-Hermitian Microcavity Laser Arrays
Authors: Dave Harshil , Gao Zihe , Choquette Kent D.
Published: October 2020

Coherently coupled 2-element laser diode arrays near the modal exceptional point have equal photon-photon and carrier-photon resonances with indistinguishable supermodes. Experimentally the relative intensity noise is suppressed near the exceptional point.
Multiple Aperture Shear-Interferometry (MArS): a solution to the aperture problem for the form measurement of aspheric surfaces
Authors: Müller André F. , Falldorf Claas , Lotzgeselle Marcel , Ehret Gerd , Bergmann Ralf B.
Published: October 2020

Multiple Aperture Shear-Interferometry (MArS) is a shape measurement technique that uses multi-spot illumination to overcome the problem of a limited observation aperture of conventional interferometric techniques and thus considerably simplifies the measurement of optical aspheres and freeform surfaces. Using a shear interferometry setup, MArS measures the coherence function in order to obtain wave vector distributions created from multi-spot LED illumination reflected by the specimen. Based on the wave vectors we reconstruct the surface topography of aspheric lenses using an inverse ray tracing approach and prior knowledge about the individual source locations. We present the topographic measurement of two aspheric lenses with different global curvature radii measured with the same identical reflection setup. In addition, we examine the achievable accuracy of the wave vector measurement using a single light source to find physical limits of MArS.
3.9 THz spatial filter based on a back-to-back Si-lens system
Authors: Gan Yuner , Mirzaei Behnam , van der Poel Sebastiaan , Silva Jose R. G. , Finkel Matvey , Eggens Martin , Ridder Marcel , Khalatpour Ali , Hu Qing , van der Tak Floris , Gao Jian-Rong
Published: October 2020

We present a terahertz spatial filter consisting of two back-to-back (B2B) mounted elliptical silicon lenses and an opening aperture defined on a thin gold layer between the lenses. The beam filtering efficiency of the B2B lens system is investigated by simulation and experiment. Using a unidirectional antenna coupled 3rd-order distributed feedback (DFB) quantum cascade laser (QCL) at 3.86 THz as the source, the B2B lens system shows 72% transmissivity experimentally with a fundamental Gaussian mode as the input, in reasonably good agreement with the simulated value of 80%. With a proper aperture size, the B2B lens system is capable of filtering the non-Gaussian beam from the QCL to a nearly fundamental Gaussian beam, where Gaussicity increases from 74% to 99%, and achieves a transmissivity larger than 30%. Thus, this approach is proven to be an effective beam shaping technique for QCLs, making them to be suitable local oscillators in the terahertz range with a Gaussian beam. Besides, the B2B lens system is applicable to a wide frequency range if the wavelength dependent part is properly scaled.
Calibration-free quantitative phase imaging using data-driven aberration modeling
Authors: Chang Taean , Ryu DongHun , Jo YoungJu , Choi Gunho , Min Hyun-Seok , Park YongKeun
Published: October 2020

We present a data-driven approach to compensate for optical aberrations in calibration-free quantitative phase imaging (QPI). Unlike existing methods that require additional measurements or a background region to correct aberrations, we exploit deep learning techniques to model the physics of aberration in an imaging system. We demonstrate the generation of a single-shot aberration-corrected field image by using a U-net-based deep neural network that learns a translation between an optical field with aberrations and an aberration-corrected field. The high fidelity and stability of our method is demonstrated on 2D and 3D QPI measurements of various confluent eukaryotic cells and microbeads, benchmarking against the conventional method using background subtractions.
Analysis of non-uniform and Erbium-Doped Fiber Bragg Gratings (ED-CFBG), using a Transmission-Lines Model
Authors: Stathopoulos N. A. , Poulakos P.
Published: October 2020

A more accurate model than the CMT-TMM is proposed for the analysis of ED-CFBG regarding both the spectral reflectivity and the group delay variation. Its potential influence on pumping-power dependent fiber dispersion compensation is examined.
Multimode interferometer based on a core-offset singlemode-multimode-singlemode fiber structure
Authors: Wang Xianfan , Zhang Caini , Huang Tengchao , Shu Xiaowu
Published: October 2020

We propose an all-fiber multimode interferometer based on a core-offset SMS fiber structure, and demonstrate that the lateral core-offset value has a big impact on multimode interference and re-imaging phenomenon within it.
Mitigating the Sampling Rate Requirements of KK Receiver by Eliminating Harmonics of Nonlinear Operations
Authors: Toba Kentaro , Fujita Takaha , Sampath Kariyawasam Indipalage Amila , Maeda Joji
Published: October 2020

We report the reduction capability of the required ADC sampling rate of the Kramers-Kronig receiver by eliminating harmonics caused by square-root and logarithm operations.
Thermooptically Tunable Thulium/Holmium-Codoped Fiber Lasers Based on Multimode Interference Effects
Authors: Sakata H. , Kosaka F. , Hayakawa K.
Published: October 2020

We present broadband tuning in Tm/Ho-codoped fiber lasers based on multimode interference effects. The oscillation wavelength is controlled over 100 nm by making use of large thermooptic coefficients of liquid cladding in a multimode section.
Convolutional Neural Networks With Integrated Optics
Authors: Ong Jun Rong , Ooi Chin Chun , Ang Thomas Y. L. , Loh Flynn , Peh Yu Xiang , Lim Soon Thor , Png Ching Eng
Published: October 2020

We present an architecture to realize a convolutional neural network with integrated optics by using the Fourier transform property of star couplers. We show, in computer simulation, high accuracy image classification using the MNIST dataset.
Wavelength Selective Switching Technology for SDM Photonic Nodes Based on SPOC Platform
Authors: Seno Kazunori , Suzuki Kenya , Miyamoto Yutaka
Published: October 2020

We report a configuration of an N-in-1 wavelength selective switch array utilizing on a spatial and planar optical circuit (SPOC) platform. We also demonstrate a novel wavelength crossconnect configuration that provides a simple optical connection.
A Novel Approach for All Optical Representation of Binaries using Linear Photonics Lattices
Authors: Nguyen Dan T. , Nolan Daniel A. , Borrelli Nicholas F.
Published: October 2020

A novel approach for all optical representation of binaries using new proposed binary hotonics lattices is presented. Significantly, the working principle does not require nonlinear interaction between light and material as conventional methods.
Photonics to save energy and increase density in information processing
Authors: Miller David A. B.
Published: October 2020

We argue we can substantially reduce energy dissipation and increase interconnect bandwidth density using parallel synchronous free-space optical channels inside and between racks, exploiting integrated waveguide photonics, and avoiding power-hungry time-multiplexing.
Analysis on the Efficiency Droop of Deep-ultraviolet Emitting AlGaN Nanowires
Authors: Lu J. , Zhong Y. , Zhao S.
Published: October 2020

Limited work has been focused on the efficiency droop in AlGaN ultraviolet light-emitting diodes. Herein, we analyzed recombination coefficients in the ultraviolet-emitting AlGaN nanowires, implying the dominant role of carrier transport in the efficiency droop.
Plasma Oscillations of Intermediate Bands in Highly Mismatched Alloys
Authors: Allami Hassan , Krich Jacob J.
Published: October 2020

Using a semi-analytical method, we show that plasmons in technologically important highly mismatched alloys behave differently than plasmons in standard metals and semiconductors. We focus on the scaling of plasma frequency with effective mass.
Next-Generation Organic Light-Emitting Diode Architectures With Metal Halide Perovskites
Authors: Matsushima Toshinori , Adachi Chihaya
Published: October 2020

We show that a chlorine-based metal halide perovskite with high transparency in the visible region and high hole and electron mobilities can be used as the excellent host or carrier transport layers in organic light-emitting diodes.
Optical analyses of multi-aperture solar central receiver systems for high-temperature concentrating solar applications
Authors: Li Lifeng , Wang Bo , Bader Roman , Wang Wujun , Pye John , Lipiński Wojciech
Published: October 2020

We perform optical analyses on multi-aperture solar central receiver systems with compound parabolic concentrators to increase the power level for better economics.
Realization of foldable perovskite light-emitting diodes
Authors: Kim Junho , Kim Eungjun , Moon Hanul , Yoo Seunghyup
Published: October 2020

Foldable perovskite light-emitting diodes are proposed by adopting a sandwich structure. The fabricated devices show no degradation after 10,000 repeated bending with a 100μm bending radius.
Spatial Division Multiplexing of Acoustic Sensors Using 7-Core Optical Fiber
Authors: Wolf Alexey , Simonov Viktor , Dostovalov Alexandr , Terentyev Vadim , Babin Sergey
Published: October 2020

We use 7-core optical fiber containing Fabry-Perot interferometers for a spatial division multiplexing of acoustic sensors. The interferometers are inscribed in different cores of the fiber using the femtosecond point-by-point inscription technique.
Fiber optic biosensor by plasmon resonance energy transfer
Authors: Ortega-Gomez A. , Barroso J. , Calatayud-Sanchez A. , Benito-Lopez F. , Zubia J. , Basabe-Desmonts L. , Villatoro J.
Published: October 2020

A sensor based on gold nanoparticles immobilized onto an optical fiber facet is shown. The innovation is related to the plasmon resonance energy transfer phenomenon application, demonstrating its usefulness for Cytochrome C detection.
Laser Characteristics of Bi-doped High-GeO2 Optical Fibers Manufactured at Different Drawing Conditions
Authors: Alyshev Sergey , Levchenko Andrei , Kharakhordin Alexandr , Khegai Aleksandr , Firstova Elena , Melkumov Mikhail , Firstov Sergei
Published: October 2020

The effect of drawing conditions on the laser properties of Bi-doped high-GeO2 fibers was investigated. The drawing speed was established to have a significant effect on the lasing efficiency of the fibers.
Femtosecond Laser Direct Written Fibre Bragg Gratings in InF3 Fibre
Authors: Bharathan Gayathri , Fernandez Toney Teddy , Ams Martin , Carrée Jean-Yves , Poulain Samuel , Poulain Marcel , Fuerbach Alex
Published: October 2020

We report the direct femtosecond laser inscription of high reflective fibre Bragg gratings into the core of InF3 fibres. These results pave the way to the development of all-fibre mid-infrared lasers above 4 µm.
Visible-light, All-fiber Spectrometer Based on Radiative Emission From a Chirped Filament Grating Array
Authors: Rahnama Abdullah , Kim Young Hwan , Aghdami Keivan Mahmoud , Herman Peter R.
Published: October 2020

A chirped-array of filament tracks, formed in single-mode fiber with femtosecond laser pulses, provided radiative emission and lens less focusing to define an all-fiber spectrometer with 0.3 nm resolution in the visible spectrum.
Low-birefringence Active Tapered Fibers for High-power Applications
Authors: Fedotov Andrei , Ustimchik Vasiliy , Chamorovskii Yuri , Gumenyuk Regina , Filippov Valery
Published: October 2020

We demonstrate the first active Yb-doped spun tapered double-clad fiber with a large mode field diameter and the ability to maintain polarization superior to traditional active PM fibers.
Experimental and Numerical Study of High-power EYDFA Interlock Requirements
Authors: Booker P. , de Varona O. , Wessels P. , Neumann J. , Kracht D.
Published: October 2020

We report interlock requirements for EYDFAs pumped with MWcm-2 intensities at 9XX nm. We extrapolated the results from core-pumped fibers to high-power cladding-pumped EYDFAs to meet the challenging requirements of engineering-level systems.
Lossless and Muxless Frequency Comb Modulation
Authors: Mazur Mikael , Fontaine Nicolas K. , Chen Haoshuo , Ryf Roland , Neilson David T. , Raybon Gregory , Adamiecki Andrew , Corteselli Steve , Schröder Jochen
Published: October 2020

We review optical modulation using temporal reshaping based on segments with in-terleaved phase modulation and dispersion. The proposed technique is compared to traditional IQ-modulators with focus on generating frequency comb-based superchannels.
Performance characterization of digital power division multiplexed transmission in fundamental mode of few-mode fiber
Authors: Swain Smaranika , Bhashyam Srikrishna , Koilpillai Ravinder D. , Venkitesh Deepa
Published: October 2020

We experimentally demonstrate 25.33 Gbps digital power division multiplexed DD-OFDM transmission in 6.5 GHz bandwidth through 5.3 km few mode fiber to enable higher split-ratio and better spectral efficiency in short-haul links.
Visible Light Beacon
Authors: YAMAZATO Takaya
Published: October 2020

Since the LED (light-emitting diode) is a semiconductor device, high-speed modulation is possible. The communication for transmitting information by blinking (modulating) the LED at such a high speed that the human eye cannot recognize is called visible light communication (VLC) [1]. The visible light beacon is an exciting application of VLC that transmits the short ID. In this article, the trend of the visible light beacon, a part of VLC is described.
Unambiguous Phase Retrieval in Fiber-based Interferometers
Authors: Roztocki Piotr , MacLellan Benjamin , Islam Mehedi , Reimer Christian , Fischer Bennet , Sciara Stefania , Helsten Robin , Jestin Yoann , Cino Alfonso , Chu Sai T. , Little Brent , Moss David J. , Kues Michael , Morandotti Roberto
Published: October 2020

A scheme for fiber interferometers, exploiting frequency-multiplexing in orthogonal fiber polarization modes, enables unambiguous phase retrieval. This allows for arbitrary phase tuning, providing a precise tool for time-bin qubit manipulation.
Nonlinear Fourier Transform: Perpetual Research Topic or Future Game-Changer?
Authors: Da Ros F. , Gaiarin S. , Jones R. T. , Jovanovic O. , da Silva E. P. , Zibar D.
Published: October 2020

The topic of nonlinear Fourier transform (NFT) will be discussed focusing on the results achieved so far, on current open challenges and on an outlook on future prospects, especially focusing on machine-learning aided NFT systems.
Real-time Experimental Study of Multi-format Compatibility of ADX-RoF Fronthaul for 5G and Beyond
Authors: Zhu Paikun , Yoshida Yuki , Kitayama Ken-ichi
Published: October 2020

We experimentally investigate the compatibility to multiple (B)5G formats of analog-to-digital-compression radio-over-fiber (ADX-RoF) fronthaul, using a real-time ADX prototype. 16-channel MIMO, 5G NR-bandwidth OFDM, SCFDM and filtered-OFDM are supported with negligible performance difference.
necessidades formativas do professor iniciante: os desafios da diversidade na escola
Authors: Leão Andreza Marques de Castro , Carneiro Rita de Kássia Cândido , Bulzoni Ana Maura Martins Castelli
Published: October 2020

O presente artigo visa discutir a questão da diversidade presente nas instituições escolares e a necessidade de um trabalho voltado à valorização das massas excluídas pela sociedade, dando ênfase à questão dos direitos dos negros e das mulheres. Partindo da necessidade de um trabalho de superação do racismo, do machismo e do sexismo, destacamos a relevância de formações continuadas para os professores iniciantes, porquanto ao saírem das universidades se deparam com a realidade das escolas, passando pelo “choque do real”. Nossa proposta é que os professores sejam preparados para uma atuação mais inclusiva, desenvolvendo um olhar crítico e acurado acerca do papel que representam na mediação das relações sociais dentro de sala de aula, apresentando uma forma de trabalho pautada no respeito aos Direitos Humanos, no diálogo intercultural e na valorização da singularidade de cada pessoa. Com este intento, a presente pesquisa, de cunho bibliográfico e analítica, permeia as questões histórico-sociais dos negros e das mulheres em sociedade, perpassando pelas dificuldades do trabalho docente em início de carreira, principalmente em se tratando do domínio do conteúdo e da organização/planejamento das aulas, enfatizando a necessidade de ações voltadas à inclusão de todos, desafios estes que são abordados por autores que tratam da realidade do professor iniciante e das necessidades formativas neste início de carreira. Em suma, o intuito do presente trabalho é contribuir para as pesquisas referentes às temáticas da diversidade humana, visando problematizar o trabalho docente e do professor iniciante pelo prisma dos Direitos Humanos.
Maxillary osteosarcoma: a case report and review of maxillary sinus space-occupying lesions
Authors: Shokri Abbas , Ramezani Kousar
Published: October 2020

Osteosarcoma is a relatively rare lesion in the maxillary bone. The proximity of the lesion to the maxillary sinus provides a null space with the minimum resistance to progress prior to manifest clinically, which makes the early diagnosis more critical. We report a case of maxillary osteosarcoma in a 21-year old male patient who was presented with the chief complaint of the pain and swelling on the left side of palate since 2 months earlier. A cone-beam computed tomography of the maxilla revealed a diffuse hyper-intense entity at the left side of the maxilla. Totally-occupied maxillary sinus space, asymmetric periodontal ligament widening of the involved teeth and spiculated and sunray periosteal reaction were recognized. The diagnosis of osteosarcoma was established and confirmed by histopathology. This article reviews the sinus-occupying lesion in the following and describes the lesions originate within the maxillary sinus or arise from the adjacent odontogenic components.
Keywords
Case report; Maxillary sinus; Osteosarcoma.
Clinical Evaluation of Wear Behavior of Human Enamel and Chipping of Veneered Zirconia against Monolithic Zirconia (Randomized Controlled Clinical Trial)
Authors: Ibrahim Nouran Mahmoud , El-basty Reham , Katamish Hesham
Published: October 2020

Objective: To evaluate the wear behavior of human enamel and chipping of veneered and monolithic zirconia for posterior full coverage restorations. Material and methods: Thirty-four zirconia full coverage restorations (seventeen in each group) were fabricated. The patients were divided into two groups according to the type of zirconia used; group 1 (comparator group) veneered zirconia crowns and group 2 (intervention group) monolithic zirconia single crowns. All crowns were lab fabricated and polished. For opposing teeth wear measurements 3D non-contact profilometer was used where epoxy resin replicas were constructed for opposing arch immediately after crowns cementation, three, six and twelve months. Restoration chipping was measured using modified United States Public Health Services (USPHS) criteria. Results: All restorations were reported as alpha with no chipping. There was no statistically significant difference between (Group 1) and (Group 2) for wear test. Conclusion: Both monolithic and veneered restorations revealed satisfactory mechanical properties with no chipping after one year of clinical use. Wear of opposing enamel was clinically acceptable for both materials.
Keywords
Ceramics; Chipping; Monolithic zirconia; Veneered zirconia; Wear.
Animated Video for Increasing Primary School Teachers’ Knowledge Regarding First Aid Management of Dental Avulsion
Authors: Katthika Vassa Khema , Fauziah Eva , Budiardjo Sarworini Bagio
Published: October 2020

Introduction: Dental avulsion is a condition in which the tooth is completely dislodged from its socket. Inappropriate management when trauma occurs can complicate the prognosis of the tooth. The majority of injuries to children's teeth occur in the school environment and teachers play an essential role in providing first aid at the accident site. However, the school teacher’s knowledge regarding first aid dental avulsion is inadequate. Objectives: The purpose of this study was to analyze the effect of an animated video (First Aid Management of Dental Avulsion) on the knowledge of primary school teachers. Materials and methods: This clinical experimental study comprised 54 teachers from 13 public elementary schools in Central Jakarta who were chosen randomly to fill out a questionnaire before and after watching the animated video. Results: Data analysis using the Wilcoxon comparative test showed that there was a statistically significant increase (P<.05) in knowledge after watching the animated video. Conclusion: Thus, the animated video was effective in increasing the knowledge regarding first aid management of dental avulsion among the primary school teachers. Keywords: audiovisual aid; first aid; school teachers; tooth avulsion
Antimicrobial efficacy of a new tri-antibiotic combination against resistant endodontic pathogens: An in-vitro study
Authors: Dahake Prasanna T. , Baliga Sudhindra M
Published: October 2020

Background: Removal of all the pathogenic bacteria from the root canal system is of prime importance for the success of endodontic therapy. Objective: The study aimed to determine the antimicrobial efficacy of three antibiotics and their new combination against selected endodontic pathogens. Methods: In this in-vitro study, we used bacterial strains associated with the refractory endodontic condition and determined MIC and MBC of Clindamycin (C), Metronidazole (M), Doxycycline (D) as well as their combination CMD. We cultured Candida Albicans, Pseudomonas Aeruginosa, Escherichia Coli, Enterococcus Faecalis, Streptococcus Mutans, Bacillus Subtilis subsp. spizizenii, Actinomyces Actinomycetemcomitans on selective culture media. We analyzed the data using paired 't' test, one-way ANOVA, and Tuckey's HSD post hoc test. Results: Clindamycin inhibited the growth of C. Albicans (90%) and S. Mutans (90%) significantly and P. Aeruginosa, E. Coli, E. Faecalis, B. Subtilis, and A. Actinomycetemcomitans were resistant to it. Metronidazole did not inhibit any of the bacteria. Doxycycline inhibited C. Albicans (90%), P. Aeruginosa (90%), and S. Mutans (90%) significantly while E. Coli, E. Faecalis, B. Subtilis, and A. Actinomycetemcomitans were resistant to it. The combination of CMD inhibited all the microbes significantly. However, at bactericidal concentrations of CMD, E. Faecalis (p = 0.024), B. Subtilis (p = 0.021) and A. Actinomycetemcomitans (p = 0.041) were eliminated significantly, while C. Albicans (p = 0.164), P. Aeruginosa (p = 0.489), E. Coli (p = 0.106) and S. Mutans (p = 0.121) showed resistance. Conclusion: Combination CMD can be used against resistant endodontic pathogens to achieve predictable endodontic results.KEYWORDSAntimicrobial agents; Clindamycin; Doxycycline; Metronidazole; Root canal therapy.
Nurse-Administered Propofol Continuous Infusion Sedation: A New Paradigm for Gastrointestinal Procedural Sedation
Authors: Lin Otto S. , La Selva Danielle , Kozarek Richard A. , Weigel Wade , Beecher Ryan , Gluck Michael , Chiorean Michael , Boden Elisa , Venu Nanda , Krishnamoorthi Rajesh , Larsen Michael , Ross Andrew
Published: October 2020

INTRODUCTION:

Nurse-Administered Propofol Continuous Infusion Sedation (NAPCIS) is a new nonanesthesia propofol delivery method for gastrointestinal endoscopy. NAPCIS is adopted from the computer-assisted propofol sedation (CAPS) protocol. We evaluated the effectiveness, efficiency, and safety of NAPCIS in low-risk subjects.

METHODS:

Between December 2016 and July 2017, patients who underwent esophagogastroduodenoscopy or colonoscopy with NAPCIS at our center were compared against 2 historical control groups of similar patients who had undergone procedures with CAPS or midazolam and fentanyl (MF) sedation.

RESULTS:

The mean age of the NAPCIS cohort (N = 3,331) was 55.2 years (45.8% male) for 945 esophagogastroduodenoscopies and 57.8 years (48.7% male) for 2,386 colonoscopies. The procedural success rates with NAPCIS were high (99.1%–99.2%) and similar to those seen in 3,603 CAPS (98.8%–99.0%) and 3,809 MF (99.0%–99.3%) controls. NAPCIS recovery times were shorter than both CAPS and MF (24.8 vs 31.7 and 52.4 minutes, respectively; P < 0.001). On arrival at the recovery unit, 86.6% of NAPCIS subjects were recorded as “Awake” compared with 82.8% of CAPS and 40.8% of MF controls (P < 0.001). Validated clinician and patient satisfaction scores were generally higher for NAPCIS compared with CAPS and MF subjects. For NAPCIS, there were only 4 cases of oxygen desaturation requiring transient mask ventilation and no serious sedation-related complications. These low complication rates were similar to those seen with CAPS (8 cases of mask ventilation) and MF (3 cases).

DISCUSSION:

NAPCIS seems to be a safe, effective, and efficient means of providing moderate sedation for upper endoscopy and colonoscopy in low-risk patients.
PENGARUH KESELAMATAN DAN KESEHATAN KERJA TERHADAP PRESTASI KERJA KARYAWAN PADA PT. PLN (PERSERO) APJ SEMARANG
Authors: Paramitha Catarina Cori Pradnya , Wijayanto Andi
Published: October 2020

The objective of this research is to find out the influence of Occupational Health and Safety Program toward the performance of the employees mediated by work motivation. The method of data collection in this explanatory research employs questionnaire, interview, observation, and documentation. From the population of 188 employees, the proportional stratified random sampling method results in 55 employees as the sample. Data analysis uses Path Analysis. Based on the result of the research, it can be concluded that Occupational Health and Safety Program has positive and significant influence mediated by the variable of work motivation. PT. PLN (Persero) APJ Semarang should improve its Occupational Health and Safety Program to increase employees’ work motivation which in turn will result in maximum work performance. Penelitian ini bertujuan untuk membuktikan pengaruh keselamatan dan kesehatan kerja (K3) terhadap prestasi kerja karyawan yang dimediasi variabel motivasi kerja. Teknik pengumpulan data menggunakan kuesioner, wawancara, observasi dan dokumentasi. Populasi dalam penelitian ini adalah seluruh karyawan PT. PLN (Persero) APJ Semarang yang berjumlah 118 orang. Metode pengambilan sampel menggunakan proportionate Stratified Random Sampling dan ditetapkan sampel sebanyak 55 orang. Analisis data dilakukan dengan menggunakan analisis jalur. Berdasarkan hasil penelitian, maka dapat disimpulkan bahwa keselamatan kerja dan kesejahteraan (K3) berpengaruh signifikan terhadap kinerja karyawan yang dimediasi oleh variabel motivasi kerja. PT. PLN (Persero) APJ Semarang seharusnya untuk meningkatkan K3 bagi karyawan agar motivasi kerja mereka menjadi lebih tinggi, sehingga mereka dapat memberikan performa yang maksimal.Keywords: Occupational Health and Safety, Work PerformanceKeselamatan dan Kesehatan Kerja, Prestasi Kerja
Limitation of Erlang B Traffic Model in Elastic Optical Network for Blocking Probability Estimation
Authors: Ujjwal  , Thangaraj Jaisingh
Published: October 2020

In this paper, an algorithm for multipath connection provisioning in elastic optical network (EON) has been proposed. Initially, the algorithm prefers the single-path routing for service provisioning. But when single-path routing is not adequate to serve a dynamic connection, the algorithm switches to the connection request fragmentation. Its computation is based on the parameters such as capacity_constant and capacity_allowed to fragment the connection request on disjoint paths. Simulation results clearly state that the proposed algorithm performs well in service provisioning as compared to the traditional single-path routing algorithms and improves the average network throughput. Thereafter, we have investigated the limitation of Erlang B traffic model in EON for calculation of link blocking probability using routing and spectrum assignment (RSA) algorithm. It is verified by the following two ways: (i) effect on the blocking probability in case of constant load and (ii) effect of slot width on the blocking probability. Our simulation results indicate that in EON due to dynamic RSA, blocking probability is not constant in case of proportionate varying of call arrival and service rate giving constant load and blocking probability depends on the number of slots per link, but in Erlang B traffic model blocking probability is always constant in case of constant load and it considers wavelength per link instead of slots per link. This is attributed to the fact that Erlang B traffic model fails to calculate blocking probability accurately in EON. We have computed the carried traffic on 14 nodes, 21-link National Science Foundation Network (NSFNET) topology.
40 Gbps Laguerre-Gaussian and Hermite-Gaussian Optical Mode Division Multiplexing for Radio over Fiber System
Authors: Mahmood Hussein Ahmed
Published: October 2020

Radio over Fiber technology is utilizing the high capacity of optical fiber system and wireless mobility network. In this work, we proposed two different optical propagation modes namely Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) setting to (0.1), (0.2) mode types generated by a special CW laser source at varying wavelength from 800 nm to 1150 nm with 50 nm spacing channel Mode division Multiplexing (MDM) technique. These wavelengths transmitted×5Gb/s data modulated on PSK modulator having 100 GHz radio frequency subcarrier over 5 km Parabolic-Index Multimode Fiber link. Q factor value and eye diagram used to evaluate system performance which showed the maximum Q factor value found at 800 nm channel 1 equal to 12.0113 for both LG 0 1 and HG 0.1. While the maximum Q factor appears at 800 nm channel 1 equal to 8.49756 for LG 0,2 and 3.56785 at 1000 nm channel 5 for HG 0.2.
Emergencia y crecimiento de plántulas de Piscidia piscipula (L.) Sarg. en condiciones de vivero
Authors: Dzib Castillo Benito Bernardo , Gonz´ález Valdivia Noel Antonio , Carballo Hernández José Ignacio
Published: October 2020

Las fabáceas dominan los bosques del sureste de México: en la Península de Yucatán se encuentra el jabín (Piscidia piscipula L.) como especie arbórea dominante. Sin embargo, su manejo está poco documentado. Por lo anterior, el objetivo del presente trabajo fue describir aspectos de su manejo en vivero. Para esto, se evaluó la emergencia de plántulas posterior a la escarificación de semillas en soluciones de ácido clorhídrico y en agua a 100 °C, contra otras sin escarificar. Las plántulas obtenidas fueron fertilizadas con las fórmulas NPK (Nitrógeno, Fósforo y Potasio) (17-17-17, 46-00-00 y 18-46-00) y un testigo blanco. La emergencia de las plántulas se contabilizó durante 20 días y el crecimiento durante un mes, registrando la altura y diámetro. El análisis de los datos se realizó con el método no paramétrico de Kruskal Wallis aplicado en ambos experimentos. Los resultados no mostraron diferencias estadísticas entre tratamientos de escarificación; la altura fue favorecida por las fórmulas NPK 17-7-17 y 18-46-00, mientras que el mayor diámetro se obtuvo con la fórmula NPK 46-00-00. Esto indica que, estadísticamente, la escarificación no influye en la emergencia de plántulas y que la fertilización de plántulas de jabín debería contener mayor nitrógeno y fósforo.
Método de comparación de resultados de modelado CAD-CAE contra probetas de ensayo destructivo
Authors: Tlapanco Rios Ernesto Isaac , Castaño Urrego Carlos Andres , Lopez Perez Johon Ricardo , Forero Rubiano Forero Rubiano Alberto
Published: October 2020

El artículo es un análisis por elemento finito (CAD-CAE) para validar un proceso mecánico real de una prueba destructiva en materiales compuestos de fibra de vidrio, remaches y pegamentos. La validación por elementos finitos simuló probetas utilizadas en procesos para la fabricación de autobuses, dichas probetas están sujetas a cumplir las normas ASTM D3039 y ASTM D5766. Por lo tanto, el objetivo del análisis CAD-CAE fue simular, con el menor error posible, la prueba destructiva y cumplir con los requerimientos de las normas ASTM. Los ensayos experimentales mostraron que las propiedades en la unión mixta cumplen los requerimientos de las propiedades mecánicas y de deformación. Las pruebas mecánicas mostraron que las probetas no fallan en los materiales, pero sí fallan por el concentrador de esfuerzos del remache. Finalmente, se elaboraron los modelos por el método de elementos finitos analizando la zona de falla y manteniendo las características de las uniones probadas. Los resultados de los análisis CAD-CAE reprodujeron las condiciones del modelo experimental satisfactoriamente que, en contraste, logró un error máximo del 3%.
Comunalidades de significados para quesos tradicionales mexicanos: queso de Zacazonapan, Quesillo y queso de Poro
Authors: Hernández-Montes Arturo , Torres-Salas Verenice , Pablo-Cano Magdiel , Jáuregui-García Carla Zulema , Peralta-Aparicio Celia , Espejel-García Anastacio
Published: October 2020

Los quesos tradicionales están asociados a un lugar de origen y deberían poseer un significado de identidad para los consumidores. El objetivo de esta investigación fue identificar comunalidades de significados en consumidores locales de queso de Zacazonapan, Quesillo y queso de Poro. A 200 consumidores de cada queso se les aplicó una encuesta en la que se presentó una imagen del queso y se les pidió escribir tres palabras que asociaran a esta. Las palabras se agruparon por afinidad, y a sus frecuencias se les aplicó una prueba de k-proporciones y el procedimiento de Marascuilo. El Quesillo (69.3%) y el queso de Poro (72.2%) presentaron mayores significados psicológicos simbólicos que el queso de Zacazonapan (48.1%); dentro de estos significados destacó la comunalidad para el significado de identidad. El quesillo y el queso de Poro fueron valorados por sus aspectos intangibles y asociados con su lugar de origen.
Modelado de la producción de sedimentos en una cuenca con poca información incluyendo los potenciales efectos del cambio climático y el cambio de uso de suelo
Authors: Orozco Medina Ismael , Ramos Castillo Luis Alberto
Published: October 2020

Ante los potenciales efectos del cambio climático y el cambio de uso de suelo, resulta transcendental evaluar los procesos de erosión y de transporte de sedimentos en condiciones actuales y futuras. Sin embargo, evaluar correctamente estos procesos no es una tarea sencilla debido a que en la mayoría de los casos no se cuenta con información observada de sedimentos para la calibración y validación de modelos matemáticos. Por ello, esta investigación plantea una alternativa metodológica para el modelado de estos procesos en cuencas sin información, incluyendo los efectos del cambio climático y cambio de uso de suelo. Los resultados obtenidos pronostican en el futuro cercano un aumento de los caudales (hasta 1 m3s-1) así como reducciones en el transporte de sedimentos (0.0003 m3s-1) y en la erosión (5%), respecto de la registrada actualmente en la subcuenca del río Turbio.
Effects of Curcumin and Fenugreek Soluble Fiber on the Physical Working Capacity at the Fatigue Threshold, Peak Oxygen Consumption, and Time to Exhaustion
Authors: Herrick Lauren P. , Goh Jensen , Menke Walter , Campbell Marilyn S. , Fleenor Bradley S. , Abel Mark G. , Bergstrom Haley C.
Published: October 2020

Herrick, LP, Goh, J, Menke, W, Campbell, MS, Fleenor, BS, Abel, MG, and Bergstrom, HC. Effects of curcumin and fenugreek soluble fiber on the physical working capacity at the fatigue threshold, peak oxygen consumption, and time to exhaustion. J Strength Cond Res 34(12): 3346–3355, 2020—The purpose of this study was to examine the effects of curcumin in combination with fenugreek soluble fiber (CUR + FEN) or fenugreek soluble fiber alone (FEN) on the neuromuscular fatigue threshold (PWCFT), peak oxygen consumption (V˙o2peak), and time to exhaustion (Tlim) on a graded exercise test (GXT), in untrained subjects. The PWCFT estimates the highest power output that can be maintained without evidence of neuromuscular fatigue. Forty-seven untrained, college-aged subjects were randomly assigned to one of 3 supplementation groups; placebo (PLA, n = 15), CUR + FEN (500 mg·d−1, n = 18), or FEN (300 mg·d−1, n = 14). The subjects completed a maximal GXT on a cycle ergometer to determine the PWCFT, V˙o2peak, and Tlim before (PRE) and after (POST) 28 days of daily supplementation. Surface electromyographic signals were recorded from a bipolar electrode arrangement on the vastus lateralis of the right leg during each test. Separate one-way analysis of covariances were used to determine if there were between-group differences for adjusted POST-PWCFT, POST-V˙o2peak, and POST-Tlim values, covaried for the respective PRE-test scores. The adjusted POST-PWCFT for the CUR + FEN group (mean ± SD: 196 ± 58 W) was greater (p = 0.016) than the PLA group (168 ± 49 W) but the FEN group (185 ± 32 W) was not different from the CUR + FEN or PLA groups (p > 0.05). There were no differences for adjusted POST-V˙o2peak (p = 0.612) or POST-Tlim (p = 0.508) among the groups. These findings suggested curcumin combined with fenugreek soluble fiber might delay neuromuscular fatigue.
Postactivation Potentiation Effect of Heavy Sled Towing on Subsequent Sprints
Authors: Williams Jason J. , Herron Robert L. , Spradley Brandon , Saracino Patrick
Published: October 2020

Williams, JJ, Herron, RL, Spradley, B, and Saracino, P. Postactivation potentiation effect of heavy sled towing on subsequent sprints. J Strength Cond Res 35(5): 1229–1233, 2021—Recent research supports heavy sled towing as a tool used to improve subsequent sprints as part of postactivation potentiation (PAP) protocols. The purpose of this study was to examine the effect of heavy sled towing using a velocity decrement (Vdec) on subsequent unloaded sprinting in high school football (soccer) athletes sprinting on artificial turf. A sled load equating to a 40–50% Vdec range was used (66–70% body mass). Fifteen (n = 9 boys and n = 6 girls) high school football players volunteered for this study. The sled-towing intervention consisted of a dynamic warm-up, 3 submaximal sprint efforts (50, 75, and 95%), and 3 maximum speed 15-m sled sprints, separated by 2-minute rests, of which the fastest time was recorded for analysis. Peak preintervention 15-m baseline sprint times were compared with peak post sled-towing 15-m sprint times using a paired samples t-test. Thirteen of 15 athletes ran faster peak post sled-towing sprint times than peak preintervention baseline sprint times (9 boys and 4 girls). On average, peak post sled-towing sprint times (2.60 ± 0.10 seconds) were 0.10 seconds faster (p < 0.0001; Cohen's d = 0.92) than peak preintervention baseline sprint times (2.70 ± 0.09 seconds). This research established that sled-towing protocols using loads corresponding to Vdec of 40–50% significantly improved subsequent sprints in high school football (soccer) athletes running on artificial turf.
Evaluation of a Reactive Agility Assessment Device in Youth Football Players
Authors: Hoffman Jay R.
Published: October 2020

Hoffman, JR. Evaluation of a reactive agility assessment device in youth football players. J Strength Cond Res 34(12): 3311–3315, 2020—The purpose of this study was to examine the reliability and validity of the Blazepod reactive agility device on sport-specific movements in competitive youth football players. Thirty-one male athletes (16.7 ± 1.5 years; 179.4 ± 7.0 cm; 75.0 ± 21.0 kg), all members of a youth tackle football team, volunteered to participate in this study. Subjects performed 3 reactive agility drills (side shuffle reactive agility, 1-m reactive agility, and 3-m reactive agility) at least 72 hours apart. In addition, all subjects also performed 3 traditional agility exercises: proagility, T drill, and L drill. These sessions were part of the offseason conditioning program for the football team that involved sport-specific drills. All assessments occurred following a warm-up and conducted in the same order on each occasion. To assess the validity of the reactive agility drills, the head coach was asked to rank the football playing and agility ability of the players participating in the study. The intraclass correlation coefficient values indicated that all 3 reactive agility drills displayed excellent reliability (r's ranging from 0.833 to 0.884). The measurement error was smaller than the individual variability, indicating that measurement error had a very limited effect on the results. Subjective rankings for agility significantly correlated with each of the agility and reactive agility measurements. Results of this study indicate that the Blazepod reactive agility device is a reliable measure of reactive agility performance and are consistent with the coach's perception of the athlete's agility performance, thus demonstrating construct validity.
Getting the Goods in Little Dorrit
Authors: Frederickson Kathleen
Published: October 2020

Kathleen Frederickson “Getting the Goods in Little Dorrit: Quarantine’s Queer Logistics” (pp. 159–183)

Most queer readings of Charles Dickens’s Little Dorrit (1857) have focused on Miss Wade as a figure of proto-sexological pathology. Flipping critical attention to Tattycoram instead allows us to reexamine sexuality and quarantine in economic terms. Dickens chooses quarantine over other possible spaces of touch and confinement because it flags Tattycoram’s entry into the plot around these economics of circulation—the ability to profit from the movement rather than the production of commodities. In the 1820s, when Little Dorrit is set, a vocal anti-quarantine lobby was stridently lamenting the financial losses occasioned by holding goods in quarantine as they came into Europe from the Levant—a lament that was especially loud when it came to the costs incurred by northern mill owners who were importing increasingly large quantities of cotton from plague-prone Egypt. Dickens invokes the quarantine as the origin point of the connection between Tattycoram and Miss Wade to route a set of Gothic thematics through a scanty but significant plot structure that relies on what I call “logistical aesthetics,” by which I mean logistics rendered as form and tone, even when emptied of substantial parts of its diegetic function. Little Dorrit mixes its interest in the circulation of capital with the economics of inheritance, figured most prominently in the movement of the iron box containing the details of Arthur Clennam’s parentage. Tattycoram’s couriering of this box borrows the logistical urgency of anti-quarantine critique seemingly in the service of narrative resolution, drawing on logistics as a formal resource that substitutes narrative value for an absented economic value that, the novel suggests, occupies the place of her queerness. This joint focus on delivery and inheritance, moreover, strongly shapes the politics of kinship, intimacy, and desire for Tattycoram and Miss Wade.