bluuebunny/crossref_metadata_2025 huggingface dataset:
Second harmonic generation transmission matrix microscopy for computational aberration correction
Authors: Cho Ye-chan , Moon Jungho , Kang Sungsam , Choi Wonshik
Published: June 2023

We introduce a method to record the transmission matrix of second-harmonic signals, and computationally correct sample-induced aberration. We demonstrated proposed concept by imaging a target under an aberration layer and visualizing muscle tissue in zebrafish.
Ultralow Power Refractive Index Tapered Optical Fiber Glucose Sensor
Authors: Lai Meimei , Ujah Erem , Slaughter Gymama
Published: June 2023

Tapered optical fiber (TOF) was successfully fabricated for refractive index glucose sensing. AuNPs decorated TOF introduced localized surface plasmon resonance. Optical transmission with an ultralow-power beam showed AuNPs enhanced the sensitivity by 4 times (2032%/RIU).
Preliminary experimental investigation of the spatial resolution of a 156 channels fNIRs system with Silicon Photomultiplier
Authors: Sreekrishnan Arjunan Mozhikunnam , Pagano Roberto , Maira Giovanni , Lombardo Salvatore
Published: June 2023

In this preliminary experimental investigation of the spatial resolution of a 156 channels sparse fNIRS system made with SiPM, deep objects with feature size small as 0.64 cm2 were reconstructed showing a fair spatial resolution.
NinjaNIRS: An Open-Source Ecosystem for Wearable, Whole-Head and High Density fNIRS with EEG Co-Localization
Authors: O’Brien W. J. , Ortega A. , Rogers D. , Yücel M. A. , von Lühmann A. , Kiran S. , Ellis T. , Somers D. , Cronin-Golomb A. , Boas D. A. , Zimmermann B.
Published: June 2023

NinjaNIRS seeks to provide an open-source ecosystem to increase adoption of functional near-infrared spectroscopy (fNIRS) with integrated EEG in the real world. Co-location and high module count enables high-density, whole-head coverage of both modalities.
A Whole Head Ultra-High Density Diffuse Optical Tomography System for Naturalistic and Resting State Functional Human Brain Mapping
Authors: Fogarty Morgan , Rafferty Sean M. , O’Sullivan Anthony C. , Svoboda Calamity F. , Markow Zachary E. , Richter Edward J. , George Tessa , King Kelsey , Wilhelm Dana , Tripathy Kalyan , Trobaugh Jason W. , Eggebrecht Adam T. , Culver Joseph P.
Published: June 2023

High-density diffuse optical tomography uses a dense array of overlapping measurements that provides functional brain images validated against fMRI. We doubled this optode density, improving resolution and expanding the field of view to whole-head coverage.
Next-generation head-mounted microscopes for large-scale neural recordings
Authors: Scherrer Joseph R. , Lynch Galen F. , Zhang Jie J. , Fee Michale S.
Published: June 2023

We present a fluorescence microscope design that enables imaging of thousands of cortical neurons in freely-moving mice. The design eliminates traditional illumination optics, allowing for head-mounted microscopes with both a lower weight (1.4 gram) and a larger field-of-view (~4 mm diameter) than previously possible.
Miniaturized and Thin 3D Microscope with Learnable Real-time Reconstruction
Authors: Tian Feng , Yang Weijian
Published: June 2023

We demonstrate a miniaturized 3D fluorescence microscope using a single layer of microlens array and a deep-learning based reconstruction model. From a single exposure, the microscope can reconstruct features at different depths in real time.
In Vivo Imaging of Neuronal Activity and Blood Vessels in AAV-Injected Mice
Authors: Parrot Anaïs , Guilbert Jérémie , Girard-Collins Pierre , Desjardins Michèle
Published: June 2023

Characterizing neurovascular coupling helps to understand neurodegenerative diseases. Here, neuronal activity and vasculature were simultaneously measured in AAV-injected mice through transcranial windows by two-photon microscopy indicating strongly correlated signals synchronized with whiskers stimulations.
Structure-guided Redesign of OxyR-based Optogenetic Reporters for Sensitive Monitoring of Intracellular H2O2 Real-time
Authors: Lee Justin Daho , Wang Yihan , Nguyen Amanda , Berndt Andre
Published: June 2023

OxyR is a protein exhibiting exceptional sensitivity and specificity towards H2O2. However, OxyR-based optogenetic sensors do not closely recapitulate the native sensitivity and kinetics. Here, we discuss a novel design principle for enhanced sensor performance.
Intraoperative detection of glioma tumor infiltration: Comparative study of FLIm vs MRI-based neuronavigation performance
Authors: Anbunesan Silvia Noble , Alfonso-Garcia Alba , Hasan Mohamed , Riestenberg Robert A , Bobinski Matthew , Lee Han Sung , Jin Lee-Way , Bloch Orin , Marcu Laura
Published: June 2023

The MRI-based neuronavigation fails in detecting gliomas tumor infiltrative edges due to intraoperative brain shift. The intraoperative fluorescence lifetime imaging (FLIm), reported here, provides 7% higher accuracy in detecting infiltrative tumor edges over pre-operative MRI.
Human Neuronavigation Using Coherent Anti-Sokes Raman Scattering Spectroscopy and Diffuse Reflectance Spectroscopy for Deep Brain Stimulation Surgery
Authors: Quémener Mireille , Bédard Alexandre , Charland Thomas , DePaoli Damon , Dionne Valérie , Drouin Anthony , Jerczynski Séabstien , Masoumi Shadi , Parham Elahe , Parrot Anaïs , Noël Valérie Pineau , Rousseau Antoine , Roussel Jonathan , Cantin Léo , Parent Martin , Côté Daniel C.
Published: June 2023

Deep brain stimulation (DBS) surgery is performed on patients suffering Parkinson’s disease for whom medication is no longer effective in relieving their symptoms. The outcomes of the surgery are highly dependent on the placement accuracy at the targeted structure in the brain. We developed a DBS electrode that includes optical fibers to perform coherent anti-Stokes Raman scattering (CARS) spectroscopy and diffuse reflectance s pectroscopy ( DRS) d uring t he e lectrode i nsertion i n t he b rain. We w ere able to identify white and grey matter using principal component analysis (PCA), proving that spectroscopic measurements could be suitable for neuronavigation.
Visualizing drug actions on dendrites: psilocybin and other classic psychedelics
Authors: Shao Ling-Xiao , Liao Clara , Gregg Ian , Davoudian Pasha A , Savalia Neil K , Delagarza Kristina , Kwan Alex C.
Published: June 2023

To determine effects of psychedelics on neuronal architecture, we used two-photon microscopy to image dendritic spines in mouse frontal cortex after administering psilocybin (Neuron, 109, 2535, 2021) and compared with other psychoactive drugs.
Applying a New Dynamic Model to Near-Infrared Spectroscopy Measurements of Cerebral Changes During Cardiac Arrest and Cardiopulmonary Resuscitation
Authors: Toronov Vladislav , Rennie Olivia , Soltani Nima , Marquez Alexandra , Mohindra Rohit , Lin Steve
Published: June 2023

We apply a novel dynamic model relating cerebral blood flow and metabolic rate of oxygen with the changes in tissue oxy- and deoxy- hemoglobin concentrations measured on the pig brain during the cardiac arrest.
Reconstruction of Nerve Fiber Orientations in Cell-body Stained Histological Brain Sections using Computational Scattered Light Imaging
Authors: auf der Heiden Franca , Georgiadis Marios , Zeineh Michael , Amunts Katrin , Axer Markus , Menzel Miriam
Published: June 2023

We present a method for direct imaging of nerve fiber orientations in cell-body stained histological brain sections, which was not yet possible for paraffin-treated tissue.
Birefringence Microscope Design and Sample Preparation Exigencies for High-resolution Imaging of Myelin Degradation
Authors: Gray Alexander J. , Blanke Nathan , Robinson Rhiannon , Rosene Douglas L. , Bigio Irving J.
Published: June 2023

Structural imaging of myelin is of utmost importance for characterization of pathological changes to the brain in neurological disorders. Birefringence microscopy is used for rapid visualization of structural changes to myelin at sub-micron (<300nm) resolution.
Enhanced determination of nerve fiber orientations by introducing iterative thresholds in Computational Scattered Light Imaging
Authors: Reuter Jan André , Gräßel David , Amunts Katrin , Axer Markus , Menzel Miriam
Published: June 2023

We improve the determination of nerve fiber orientations in brain tissue sections that have been measured with Computational Scattered Light Imaging by close examination of low intensity signals with iterative thresholding.
DEEP2: Deep Learning Powered De-scattering with Excitation Patterning (DEEP)
Authors: Wijethilake Navodini , Anandakumar Mithunjha , Zheng Cheng , So Peter T. C. , Yildirim Murat , Wadduwage Dushan N.
Published: June 2023

We present DEEP2, a computational multiphoton microscope to image through scattering tissue. In DEEP2, temporally focused structured light excites deep tissue in wide-field, and deep learning reconstructs clean images from scattered measurements.
Differentiable Adaptive Optics and Light Shaping in Two-Photon Microscopy
Authors: Vishniakou Ivan , Seelig Johannes D.
Published: June 2023

We develop a differentiable optics approach for modeling light propagation through a high N.A. microscope objective based on efficient computational optimization of the Debye-Wolf diffraction integral. We apply the technique for wavefront sensing for adaptive optics without guide stars and light shaping in a two-photon microscope.
Extending the field-of-view of light sheet fluorescence microscopy using physics informed machine learning
Authors: Sheppard Steven , Brown Peter T. , Shepherd Douglas P.
Published: June 2023

Here we present a computational imaging approach, based on a physical model of light sheet generation and proximal gradient descent, to extend the usable field-of-view in light sheet fluorescence microscopy.
Multiscale Quantitative Phase Imaging Yields Fractal Dimension of Cellular Structures
Authors: Rancu Albert , Chen Cindy X. , Price Hillel , Wax Adam
Published: June 2023

We demonstrate a novel technique for calculating the fractal dimension of adherent cells using multiscale Quantitative Phase Imaging information. We examine the relationship between this measurement and disorder strength across different cell lines.
Revealing the ultra-structure of microorganisms using tabletop extreme ultraviolet ptychography
Authors: Liu C. , Eschen W. , Loetgering L. , Molina D. , Klas R. , Iliou A. , Steinert M. , Herkersdorf S. , Kirsche A. , Pertsch T. , Hillmann F. , Limpert J. , Rothhardt J.
Published: June 2023

We report on our latest biological imaging results on a tabletop ptychographic microscope at 13.5 nm wavelength. Retrieved amplitude and phase images with sub-60-nm resolution enable the identification of the nanoscale material composition inside microorganisms.
From information theory to novel imaging techniques
Authors: Maestre Dante , Conrad-Billroth Clara , Hitzelhammer Felix , Bouchet Dorian , Dong Jonathan , Juffmann Thomas
Published: June 2023

In imaging, we retrieve information about a specimen by encoding it into a probe beam. We quantitatively analyze the Fisher information provided by phase and scattering microscopy techniques and discuss implications for microscope design.
Effect of Parameters in a Virtual Array Imaging Cavity
Authors: Valdés Maximiliano V. , Mariné Maximiliano , Parot Vicente J.
Published: June 2023

A virtual array imaging cavity generates multiple images on a camera, enabling multifocal imaging without beam splitters or diffractive elements. We simulated light propagation through such a device and the effect of its design parameters.
Multimodal MPM Image Processing: Nonlinear Denoise Method Based on Kernel Size Determined by Tissue Feature
Authors: Wu Wentao , Tang Shuo
Published: June 2023

We demonstrated an image denoise method for multiphoton microscopy. The method nonlinearly adjusts pixel brightness according to average brightness comparison between the image global and kernels with selected size. The signal-to-noise ratio is significantly improved.
Machine Learning-based Analysis of ICG-Assisted NIR Spectral Data for Diagnosing Pancreatic Carcinoma
Authors: Mukhopadhyay Orna
Published: June 2023

Near-infrared imaging (NIR) combined with machine learning can provide a high-throughput procedure for detecting tumors with high sensitivity and specificity, We present an end-to-end machine learning-based framework for fast, accurate diagnosis of pancreatic carcinoma.
Improving Autofluorescence Lifetime Decay Accuracy for Cellular Metabolic Imaging Applications
Authors: Kolenc Olivia I. , Woessner Alan E. , Quinn Kyle P.
Published: June 2023

Biexponential fitting of autofluorescence lifetime decay curves is susceptible to significant error. Binning data from all pixels within whole cells and performing non-linear curvefitting in MATLAB can greatly improve measurement accuracy.
Quantitative analysis of drug tablet aging by fast hyperspectral stimulated Raman scattering microscopy
Authors: Wei Yuxiao , Pence Isaac J. , Evans Conor L.
Published: June 2023

Pharmaceutical development of solid-state formulations requires testing for uniformity and active pharmaceutical ingredient stability. We demonstrate fast chemical imaging by epi-detected sparse spectral sampling stimulated Raman scattering to quantify API and excipient degradation and distribution.
Selective excitation for imaging via chirped fractional stimulated Raman adiabatic passage
Authors: Chathanathil Jabir , Ramaswamy Aneesh , Malinovskaya Svetlana
Published: June 2023

We demonstrate that chirping the pump and stokes pulses in fractional stimulated Raman adiabatic passage can selectively create a maximally coherent superposition in a nearly degenerate four-level system, allowing high-resolution imaging.
Chemical Visualization with Optically Super-resolved InfraRed Imaging micro-Spectroscopy (OSIRIS)
Authors: Huffman T.J. , Furstenberg Robert , Kendziora Christopher A. , McGill R.A.
Published: June 2023

We've developed a microscopy technique for chemical imaging and tomography with high spatial resolution (~100 nm). Data analysis reveals the chemical makeup of the sample as well as the infrared spectrum of each chemical component.
Wide-field Interferometric Scattering Microscopy with an Off-Axis Illumination Configuration
Authors: Anyi Caroline Livan , You Hengze , Wei Liaoliao , Xiao Yi , Ling Tong
Published: June 2023

We report an iSCAT microscopy with an off-axis illumination configuration to minimize back-reflection artefacts in iSCAT images. This setup provides a field of view of 172 x 172 μm² with four-times improvement in signal contrast.
Cross-Polarized Microscopy of Pigmented Cells In Vivo
Authors: Romero Rafael , Zhao Jingwei , Stratton Delaney B. , Curiel Clara N. , Kang Dongkyun
Published: June 2023

We have developed a portable cross-polarized microscope for imaging human skin in vivo at high resolution. Preliminary results showed that high-NA cross-polarized microscopy could visualize individual pigmented cells for the human skin in vivo.
Laser speckle imaging with tilted plane illumination
Authors: Long Kai , Shen Shuhao , Du E , Chen Nanguang
Published: June 2023

We have developed a laser speckle imaging method based on selected plane illumination. Optical sectioning is achieved for 3D quantitative flow imaging.
Using Angular Light Scattering to Measure Protein Aggregation
Authors: Vik Cassidy , Espinel Lani , Cannaday Ashley
Published: June 2023

Preliminary investigations were conducted to determine whether light scattering from proteins could be measured and fit to Mie theory. Distinct differences were observed in the scattering patterns from various aggregation sizes.
Intravital multiphoton microscopy of human skin with label-free molecular contrast
Authors: Durkin Amanda , Vicente Juvinch , Dilley Katelyn K. , Lemberger Moran , Ganesan Anand K. , Balu Mihaela
Published: June 2023

This presentation will highlight the most recent results of exploring the feasibility of a custom designed clinical multiphoton imaging platform to identify and distinguish immune cell populations in human skin, based on label-free molecular contrast.
Developing High Confinement and Low-loss Silicon Nitride Photonic Devices for Optical Coherence Tomography (Invited)
Authors: Ji Xingchen , Chen Junzhuo , Ling Yuye , Su Yikai
Published: June 2023

There is a surging interest in developing integrated Optical Coherence Tomography (OCT) system. However, most components are based on silicon which cannot be used for wavelength below 1.2 μm. Here, we discuss the potential of using Si3N4photonic devices for OCT.
On-Chip Optical Nanotweezers for Ultrafast Antibiotic and Bacteriophage Susceptibility Testing
Authors: Villa Nicolas , Tartari Enrico , Glicenstein Simon , Picard Emmanuel , Marcoux Pierre , Zelsmann Marc , Resch Grégory , Hadji Emmanuel , Houdré Romuald
Published: June 2023

Rapid analysis of antimicrobial susceptibility is a challenge in the fight against infectious diseases. Here we report how the interaction between integrated optical tweezers and bacteria reveals antibiotic- and bacteriophage-induced physiological stresses.
Insect Odorant Binding Protein 2 Integrated with Flow Digital Nanoplasmon-metry for Neonicotinoid Pesticide Residues Sensing in Beverages
Authors: Chang Ting-Wei , Wang Sheng-Hann , Chin Iuan Sheau , Li Pei-Zhen , Lo Shu-Cheng , Hsieh Shu-Yi , Lin Jung-Hsin , Wei Pei-Kuen
Published: June 2023

Neonicotinoid is one class of the most used pesticides to repel pests. They demonstrated good efficiency but meanwhile pollute the ecosystem. Therefore, its abuse is an ever-thorny problem. Furthermore, since the multi-pesticide association is commonly used for high-efficient crop protection from pests in farms, quickly screening the pesticide contamination sorted by class is much more efficient and more accessible for on-site use. In this work, a novel and promising strategy that incorporated the neonicotinoid-specific odorant binding protein 2 (OBP2) with ultra-sensitive local surface plasmon resonance (LSPR)-based measurement, the flow digital nanoplasmon-metry (flow DiNM) was proposed. OBP2 modified on gold nanoparticles acted as the seizer to simultaneously capture neonicotinoids, such as imidacloprid, dinotefuran, and acetamiprid. The flow DiNM comprises spectral image contrast and digital analysis to enhance the slight LSPR change by the small molecule, neonicotinoid pesticides, attaching. It shows prominent LODs of 3.6, 7, and 15.3 ppb in imidacloprid, acetamiprid, and dinotefuran within the 45-minute detection. Furthermore, the blind tests show a high consistency to the standard method, and the recovery of true positives was 83% and 87.5% for green and black teas, respectively, and the recovery of true negatives can achieve 100 % with a total of 18 tests. Compared to conventional antibody-based immunoassay, the production of OBPS that uses E. coil protein expression takes advantage of high yield, time-saving, and cost-effectiveness. Together with its broad while specific neonicotinoid pesticides binding affinity and sensitivity of flow DiNM, this work demonstrated much higher accessibility to the on-site end users.
Dynamics of Active Particles Confined in Optical Traps
Authors: O’Donnell Michael , Morling Thomas , Hanna Simon
Published: June 2023

In this computational study active dumbbell-shaped particles are held in optical traps, and their arrangements and dynamics studied. The richness of resultant physical behaviour is explored for different refractive index particles.
Manipulation of Janus Particles using Optical Nanofibers
Authors: Chormaic Síle Nic , Tkachenko Georgiy , Esporlas Cindy , Sanskriti Isha , Truong Viet Giang
Published: June 2023

We discuss the manipulation of gold-silica Janus particles in the evanescent field of optical nanofibers. Comparison between the trapping efficiency of silica particles is included. In particular, we pay attention to thermal effects due to the gold coating and note that the gold acts as an optical sail for particle translation.
Optical manipulation of resonant nanoparticles for thermal and rheological measurements
Authors: Karpinski Pawel
Published: June 2023

Optical trapping and rotation of resonant nanoparticles combined with determination of its internal and external temperatures create a perfect platform for study of rheology, temperature and basic thermodynamics in the micro- and nanoscale.
Manipulation, trapping, and biosensing using metamaterial devices
Authors: Kotsifaki Domna G. , Bouloumis Theodoros D. , Truong Viet Giang , Chormaic Síle Nic
Published: June 2023

We have designed and fabricated plasmonic metamaterial devices for single nanoparticle trapping and biosensing applications. We studied the ability to trap several nano-objects. Moreover, we have identified bacteria in liquid using the same designed meta-material.
Faster and More Accurate Geometrical-Optics Optical Force Calculation Using Neural Networks
Authors: Ciriza David Bronte , Magazzù Alessandro , Callegari Agnese , Barbosa Gunther , Neves Antonio A. R. , Iatì Maria A. , Volpe Giovanni , Maragò Onofrio M.
Published: June 2023

We use neural networks to improve not only the speed but also the accuracy of the optical force calculations in the geometrical-optics approximation. This allows us to study problems that would be computationally impossible otherwise.
Advanced Algorithms for Bacterial Analysis in Body Fluids Using Raman Tweezers
Authors: Vaculík Ondřej , Bernatová Silvie , Šerý Mojmír , Šiler Martin , Samek Ota , Rebrošová Katarína , Růžička Filip , Zemánek Pavel
Published: June 2023

Analysis of bacteria in body fluids using Raman tweezers generates a mixture of signals from the bacteria and the medium. Advanced spectral unmixing algorithms (PCA, k-means, FIPPI, N-FINDR) can be used to separate each signal.
Optical and Raman tweezers for the manipulation and characterization of cosmic dust and sea microplastics
Authors: Magazzù A. , Gillibert R. , Ciriza D. Bronte , Musolino A. , Donato M. G. , Foti A. , de La Chapelle M. L. , Lagarde F. , Rotundi A. , Folco L. , Maragò O. M. , Gucciardi P. G.
Published: June 2023

We use optical and Raman Tweezers to manipulate micro and nano-plastics and individual cosmic dust particles. We identify their compositions and shapes studying their response to optical forces, enabling a better understanding of the plastics fragmentation processes in sea environment and the effects of light on single grains of cosmic dust.
Multiparametric remote optical sensing by a single trap upconverting microparticle at the microscale
Authors: Ortiz-Rivero E. , Jaque D. , Haro-González P.
Published: June 2023

Control over particles is key for bio-applications. Rotation dynamics analysis allows the medium characterization. An optically trapped and rotated microparticle is presented as sensor to characterize the properties of a liquid medium at the microscale.
Polarimetric Second Harmonic Generation Microscopy Reveals the Origins of Collagen Nonlinear Chiral Response
Authors: Alizadeh Mehdi , Bulotienė Danutė , Karabanovas Vitalijus , Kontenis Lukas , Barzda Virginijus
Published: June 2023

Origins of chiral nonlinear response of collagen I is studied in flip experiment by polarimetric SHG microscopy. The sign of chiral susceptibility ratio changes due to the fiber 3D rotation upon sample flipping.
An Integrated Platform for Multi-Algorithm Fluorescence Fluctuation Super-Resolution Nanoscopy
Authors: Li Wenbo , Zeng Zhiping
Published: June 2023

An integrated platform for multi-algorithm fluorescence fluctuation super-resolution nanoscopy is developed. The platform integrates 4 super-resolution algorithms for image reconstructions. Subcellular details can be discerned at the resolution beyond the diffraction limit using this platform.
Using Machine Learning with Multispectral Spatial Frequency Domain Imaging Data to Characterize Burns from Millimeter-Wave Sources
Authors: Wilson Robert H. , Kennedy Gordon T. , Campbell Chris , Voorhees William , Parker James E. , Kowalczewski Christine , Payne Jason , Kowalczewski Andrew , Christy Robert , Whitmore Jeffrey , Stone Randolph , Durkin Anthony J.
Published: June 2023

Accurate, prompt classification of burn wound severity is crucial for patient care. We use non-contact multispectral spatial frequency domain imaging technology coupled with machine learning algorithms to categorize millimeter-wave radiation burns in a preclinical model.
Cherenkov Light-based Dosimetry for Molecular Radiation Therapy of the Thyroid
Authors: Dubal Jigar , Florescu Lucia
Published: June 2023

We perform Monte Carlo simulations using clinical CT geometries to in-vestigate Cherenkov light emission in molecular radiation therapy of hyperthyroidism and papillary thyroid carcinoma and demonstrate that Cherenkov-light based dosimetry could be feasible.
Dispersion study of a broadband terahertz focusing reflecting metasurface for 6G wireless communication
Authors: Ferdous Hossain Fahim , O’Hara John F.
Published: June 2023

In 6G wireless communications, functional terahertz reflecting metasurfaces are expected to play increasingly important roles such as beamforming and beamsteering. However, their performance optimization as a function of multiple competing design parameters remains a significant challenge. This paper demonstrates a multi-dimensionally optimized design of a functional and efficient focusing metasurface reflector in the burgeoning D-band (0.11-0.17 THz). In addition to achieving 20% fractional bandwidth (0.135-0.165 THz), this design is polarization-maintaining, diffraction limited, simple in design, and exhibits 64.1% broadband power efficiency (1.9 dB insertion loss). We perform a unique study of the magnitude of temporal (group-delay) dispersion introduced by this design to the broadband signal at the focus. Despite being formed by an array of highly dispersive resonators, the metasurface exhibits very low dispersion, which avoids pulse reshaping and its consequent limitations on achievable data rate. The low dispersion characteristic of the metasurface is a consequence of its optimized design. The design and performance of the focusing reflector are presented followed by a dispersion analysis revealing that only 2.83% temporal broadening of the pulse is observed at the focus.
Removal of occluding shadows in fringe-projection profilometry by co-phasing simultaneous fringes
Authors: Garnica Msc , Padilla Moises , Paez Gonzalo , Servin Manuel
Published: June 2023

We propose a spatio-temporal technique for demodulation of composed fringes produced by simultaneous operation of two projectors in fringe-projection profilometry (FPP). Using multiple projectors allows us to cope with casted shadows and specular reflections, which are fundamental limitations of the typical (1-projector 1-camera) FPP setup. In prior works, each additional projector increases the number of required phase-stepped images: if the typical setup utilizes N phase-stepped images, the 2-projector setup requires 2N images, and so on. Alternatively, in this work we propose a co-phasing technique that requires only N fringe patterns in the same fashion as the typical setup. The proposed technique fuses all available information before computing the partial phases, eliminating the need for multiple phase unwrapping and heuristics. A detailed mathematical description is provided and the viability of the proposal is confirmed with experimental results.
How the monarch got its spots: Long-distance migration selects for larger white spots on monarch butterfly wings
Authors: Davis Andrew K. , Herkenhoff Brenden , Vu Christina , Barriga Paola A. , Hassanalian Mostafa
Published: June 2023

Elucidating the adaptations that promote flight in animals can aid the understanding of evolution and species divergence, and/or provide inspiration for aerospace engineering and the design of better aerial vehicles. The famed long-distance migration of monarch butterflies in North America still holds many questions and opportunities for inspiration. For example, there is little research on whether the monarch’s primary wing colors themselves (black, orange, or white) have any aerodynamic or migration function. Dark colors on wings of other animals have recently been shown to aid flight by enhancing solar absorption, which reduces drag forces. However, too much black surface could be problematic for monarchs, which are exposed to increasing amounts of solar energy along their flightpath. This paper describes the results of two related investigations that attempt to elucidate the importance of wing color to the monarch migration. By measuring the color proportions of nearly 400 monarch wings collected at different stages of their journey, we found, surprisingly, that successful migrants tended to have less black on their wings (about 3% less), but also more white pigment (about 3% more); monarchs have a band of light-colored marginal wing spots. Second, image analysis of museum specimens revealed migratory monarchs had significantly larger white spots, proportional to the wing area, than most non-migratory, New World Danaid butterflies, which argues spot size has evolved along with migratory behavior. Combined, these findings strongly suggest that the long-distance migration itself selects for larger white spots every fall, so that only those individuals with large spots will survive to pass on their genes. Further experimental work is needed to elucidate how the spots aid the migration, but it is possible that they enhance aerodynamic efficiency; other work by the authors demonstrates how alternating white and black pigment on wings can reduce drag. These results will serve as a useful starting point for such endeavors, which should improve understanding of one of the world’s most fascinating animal migrations, and also provide practical knowledge for the field of aerospace engineering.
Composition and distribution of fatty acids in various lipid fractions in serum and follicular fluid of women undergoing assisted reproductive technology
Authors: Liu Yujie , Tilleman Kelly , Vlaeminck Bruno , Gervais Rachel , Chouinard P. Yvan , De Sutter Petra , Fievez Veerle
Published: June 2023

Fatty acids (FA) in follicular fluid (FF) are present in an esterified form [triglycerides, cholesterol esters and phospholipids] or as non-esterified FA, which partly originate from blood. However, a comprehensive comparison of blood vs. FF FA in various lipid classes is missing. The aim of this study was to determine the distribution of the FA composition in each lipid class of serum and FF, and to investigate their mutual correlations. A total of 74 patients undergoing assisted reproductive technology treatment were involved in the study. Both in serum as well as FF, saturated FA and mono-unsaturated FA were predominant in non-esterified FA and triglycerides fractions while poly-unsaturated FA were mainly present in phospholipids and cholesterol esters fractions, although phospholipids also contained high proportions of saturated FA. Irrespective of the lipid class, the FA proportions differed between serum and FF (P < 0.05). Despite these differences, most of the FA in triglycerides, phospholipids and cholesterol esters of FF were well correlated with their proportions in serum. Nevertheless, only weak to moderate associations (r < 0.60) were observed for the majority of the FA in the non-esterified FA fraction. Differences in FA product/precursor-ratios were found between serum and FF, such as higher C20:4n-6 to C18:2n-6 and C20:5n-3 to C18:3n-3 in FF. FA metabolism (e.g. desaturation and elongation) takes place in cells of the intrafollicular micro-environment. Moreover, good correlations between esterified FA in serum and FF suggest esterified FA in blood could be representative of esterified FA in FF.
Consumos culturales, imaginarios y heroicidad en la representación icónica de Pablo Escobar
Authors: Patiño Prieto Juan Carlos
Published: June 2023

La presente investigación acerca de las representaciones de Pablo Escobar tiene como fin analizar el carácter icónico de estas en relación con la atracción o rechazo que producen en diversos públicos debido a su condición estética y a la profundidad de sus contenidos. El análisis de la presencia cotidiana de las representaciones de Pablo Escobar se desarrolla a través de la metodología propuesta desde el giro icónico, que considera el valor simbólico de estas a partir de la actuación de sus agentes, los escenarios de significación, su promoción por parte del mercado y su recepción por parte de los públicos. La representación exacerbada del pasado violento más reciente de Colombia, estereotipada en la figura de Pablo Escobar, es recogida de diversas plataformas de productos audiovisuales, internet, investigaciones anteriores y entrevistas realizadas a turistas extranjeros que llevan a cabo los denominados narcotours en Colombia, particularmente en Medellín. Uno de los hallazgos más importantes de la investigación es la continua difusión de las representaciones de Pablo Escobar en múltiples escenarios de significación, que ha conducido a que estas sean entendidas como una síntesis de elementos culturales en los que prima la corrupción y la violencia presentes por muchas décadas en la historia de Colombia. En este sentido, el estatus icónico de las representaciones de Pablo Escobar es conferido tanto por parte de las instancias sociales con el poder de crear y transmitir sus narrativas con un trasfondo heroico como por parte de los públicos que las acogen o las rechazan.
Uso de prótesis parcial removible con resina acrílica termoplástica: una revisión de literatura
Authors: Castillo Pedraza Midian Clara , Mayumi Inagati Cristiane , Wilches Visbal Jorge Homero
Published: June 2023

La Prótesis Parcial Removible (PPR) es una alternativa de tratamiento cuando se trata de pacientes que perdieron algunos elementos dentarios, debido a que poseen como ventajas un costo relativamente bajo y una función masticatoria satisfactoria. Además, es una buena opción cuando hay perdida de los tejidos óseos, siendo imposibilitando la instalación de implantes dentarios. La PPR convencional presenta una estructura metálica que ofrece retención y resistencia a la prótesis, convirtiéndola en poco agradable a los pacientes, por el hecho de dejar evidente el metal en la cavidad oral. Muchos investigadores, con el objetivo de devolver más allá de la función y la estética, estudian diversas formas de presentación de la PPR, surgiendo así, a la Prótesis Parcial Flexible (PFlex). La PFlex es una prótesis parcial confeccionada con resina termoplástica, sin metal y con flexibilidad, pero su uso, para muchos profesionales, está limitado solo como prótesis temporales, aunque existen algunos clínicos que utilizan PFlex como alternativa de PPR convencional. Así, uno de los cuestionamientos constantes de los científicos es si realmente es posible utilizar a PFlex como alternativa protética definitiva. Por tanto, el proposito del presente trabajo fue realizar una revisión de la literatura para evaluar si el uso de prótesis parciales removibles con resina termoplástica puede ser una alternativa a las prótesis parciales convencionales, exponiendo las ventajas, desventajas, indicaciones, contraindicaciones y las propiedades del material protético.
Fluorosis dental en la primera infancia: estado del arte
Authors: Pérez Puello Sthefanie del Carmen , Henao Rodelo Meris , Montes Batista Jorge , Palacio Quintero Carlos , Herrera Barrios Fabián
Published: June 2023

La fluorosis dental se caracteriza por una hipomineralización de la estructura dental causada por ingesta excesiva de fluoruro sistémico. En la dentición decidua, su diagnostico precoz es importante dado que será un predictor para la aparición de lesiones en la dentición permanente. El objetivo de la presente revisión fue describir la evidencia científica sobre la fluorosis dental en dentición decidua reportando su etiología y factores relacionados, prevalencia, diagnóstico y tratamiento. Fueron realizadas búsquedas electrónicas en las bases de datos: PubMed/Medline, EbscoHost y ScienceDirect (Noviembre/2020), utilizando las palabras clave “dental fluorosis”, “deciduous teeth”, “primary tooth", "primary teeth". El desarrollo de fluorosis dental en dentición decidua se relacionó con la ingesta de múltiples fuentes de flúor principalmente; agua potable, alimentos de la dieta, formulas infantiles, suplementos y uso de dentífricos fluorados en dosis inadecuadas. Algunos factores prenatales como vivir en terrenos montañosos o de gran altitud y habitar en lugares cercanos a minas de combustión de carbón también fueron asociados. La prevalencia de fluorosis dental en la primera infancia es baja y puede variar entre 6,2% y 96,6%, dependiendo principalmente de la concentración de flúor en agua potable. Para el diagnóstico de la fluorosis dental en la dentición decidua se deben considerar características como la localización, aspecto, extensión y color de la lesión, realizando diagnóstico diferencial con otro tipo de defectos en esmalte y dentina. Así mismo, el tratamiento de las lesiones dependerá de la severidad del defecto y condiciones individuales del paciente.
A Comparative Study Regarding the Impact of Covid-19 on Latin American College Students
Authors: Pérez Miguel A. , Durón Ramos Maria Fernanda , de la Cruz-Vargas Jhony A. , Chacón Andrade Edgardo , Mills Goldny , Pérez Kenneth J. , Amador Ahumada Concepción Elena , Ripoll Garcia Luz Dary , Rodríguez Rodríguez Virginia Consuelo
Published: June 2023

COVID-19 has changed educational opportunities for students around the world, and, in the process, affected their lifestyle, happiness, and engagement. The present research is part of a project from six universities in different countries across Latin America to examine the impact of COVID-19 on university students.Objectives: The purpose of this study was to assess and compare the impact of COVID-19on lifestyle changes, orientations to happiness, and student engagement among a sample of college students in Mexico, El Salvador, Colombia, the Dominican Republic, Peru, and the US.Methods: Participants were1764 students from the six previously identified countries. Data were collected using the Student Health Behavior Inventory, the Orientations to Ha-ppiness Scale, and the University Student Engagement Inventory.Results: Student respondents were mostly female, with a median age of 22. Most reported no changes in academic performance and statistically significant changes in some lifestyle behaviors such as nutrition and physical activity. Conclusions: The global pandemic led to behavioral changes among college students in La-tin America, and it affected their orientations to happiness and engagement. Institutions of higher learning are called to create opportunities for their students to reintegrate into an in-person learning environment to facilitate positive lifestyle changes for their students.
DINAMIKA RESILIENSI PADA ORANG DENGAN LUPUS (ODAPUS)
Authors: Adiputra Bio Rama
Published: June 2023

Lupus is a chronic autoimmune disease in which an abnormal immune system can cause inflammation on several organ or body systems. The risk of mortality rate caused by Lupus is high and late diagnosis is also prevalent which impact the psychological aspect of individual affected with Lupus (so-called Odapus). Therefore, resiliency is needed; that is individual ability to survive and keep optimistic attitude towards recovery. This study aims to describe the resilience dynamics of the affected individuals with Lupus. This is a qualitative study that involved 3 Odapus as participants. There are 1 male and 2 females that have diagnosed Lupus since their age was 15-17 years. The results indicated that partcipants have been developed the resilience skills for their good to copes and deals with various problems which resilience is not just something that adhered in someone, but it is a result of learning process.
HUBUNGAN KECERDASAN EMOSIONAL DAN ADAPTABILITAS KARIER PADA SISWA KELAS XII SMA SANTA URSULA JAKARTA
Authors: Paradita Cornelia Tasya , Sawitri Dian Ratna
Published: June 2023

Adaptabilitas karier merupakan kesiapan dan kemampuan yang dimiliki oleh seorang individu dalam memilih, menentukan, menghadapi, serta mengatasi tantangan dalam masa depannya, baik yang dapat diduga ataupun tidak terduga. Kecerdasan emosional merupakan kemampuan individu untuk mengenali dan memahami diri sendiri serta orang lain sehingga dapat menyesuaikan diri dengan lingkungannya. Siswa SMA kelas XII sedang berada berada pada tahap perkembangan karier eksplorasi dan merupakan populasi yang akan menghadapi transisi dari jenjang pendidikan menuju karier dunia kerja, sehingga diharapkan mampu untuk beradaptasi, baik di lingkungan pendidikan yang lebih tinggi maupun di lingkungan kerja. Penelitian ini bertujuan untuk mengetahui hubungan antara kecerdasan emosional dan adaptabilitas karier pada siswa kelas XII SMA Santa Ursula Jakarta. Populasi dalam penelitian ini sejumlah 213 siswa kelas XII dengan sampel sebanyak 144 siswa, yang diambil dengan cluster random sampling. Alat ukur yang digunakan dalam penelitian ini yaitu Skala Kecerdasan Emosional (24 aitem, ) dan Skala Adaptabilitas Karier (23 aitem, ). Teknik analisis data menggunakan analisis Spearman’s Rank dan menunjukkan adanya hubungan positif yang signifikan antara kecerdasan emosional dan adaptabilitas karier (rxy = 0,354,  p  = 0,000). Artinya, semakin tinggi kecerdasan emosional, maka semakin tinggi adaptabilitas karier, dan sebaliknya semakin rendah kecerdasan emosional, maka semakin rendah pula adaptabilitas karier.
FISIBILITAS ACCEPTANCE AND COMMITMENT THERAPY (ACT) DALAM SETTING KELOMPOK UNTUK MENINGKATKAN SELF-EFFICACY PADA MAHASISWA DENGAN KECEMASAN SOSIAL
Authors: Gunawan Aditya , Oriza Imelda Ika Dian
Published: June 2023

Kecemasan sosial merupakan salah satu gangguan yang dapat mempengaruhi performa akademik mahasiswa. Beberapa teori dan penelitian sebelumnya menyatakan bahwa self-efficacy merupakan mediator yang dapat membantu efektivitas suatu treatment. Acceptance and Commitment Therapy (ACT) merupakan intervensi berbasis mindfulness dan acceptance dengan tujuan untuk pengembangan, perbaikan, atau sebagai alternatif teoritis yang lebih kuat dalam intervensi berbasis kognitif. Diharapkan melalui ACT dapat membantu mahasiswa untuk menghadapi pengalaman negatifnya melalui peningkatan fleksibilitas psikologis. Penelitian ini melakukan replika pada modul Mindfulness and Acceptance based Group Therapy for Social Anxiety Disorder: A treatment Manual Second Edition dari Fleming & Kocovski (2014). ACT dilakukan dalam kelompok yang terdiri dari 4 sesi dengan jeda 1 minggu antar sesi. Sampel dikumpulkan dengan metode purposive sampling. Pengukuran efektivitas intervensi dilakukan menggunakan Liebowitz Social Anxiety Scale (LSAS), General Self-Efficacy Scale (GSAS), dan Acceptance and Action Questionnaire (AAQ-II). Hasil akhir menunjukkan bahwa terdapat penurunan kecemasan sosial serta kenaikan self-efficacy. Kohesivitas dalam kelompok membantu partisipan untuk lebih terbuka dan berdampak positif. Peneliti menduga terdapat faktor lain yang mempengaruhi kecemasan sosial. Ketiadaan peningkatan self-efficacy menunjukkan bahwa ACT dapat digunakan pada populasi yang lebihluas lagi meskipun riset mengenai hal ini masih diperlukan.
Pengaruh Kadar Timbal dalam Darah terhadap Peningkatan Kadar Superoxide Dismutase (SOD) pada Preeklampsia
Authors: Pramono Besari Adi , Faradz Sultana M.H , Suhartono Suhartono , Pramono Noor
Published: June 2023

Latar Belakang: Angka kematian ibu (AKI) adalah masalah yang masih menjadi perhatian khusus di Indonesia. Preeklampsia adalah suatu komplikasi dalam kehamilan yang menjadi salah satu penyebab utama mortalitas ibu dan janin di seluruh dunia. Preeklampsia pun merupakan penyakit yang seringkali menyebabkan seorang ibu hamil memerlukan perawatan hingga di intensive care unit (ICU).  Paparan timbal merupakan faktor risiko penting kejadian preeklampsia, dimana ibu hamil dengan preeklampsia memiliki kadar timbal darah lebih tinggi secara signifikan dari rata – rata kehamilan normal. Penurunan kadar Antioksidan juga secara konsisten berhubungan dengan kejadian preeklampsia. Dibutuhkan pengkajian lebih lanjut mengenai hubungan antara kadar timbal darah dengan status antioksidan pada pasien preeklampsia.Tujuan: Untuk mengetahui dan menganalisis kadar timbal sebagai faktor risiko terhadap peningkatan kadar superoxide dismutase (SOD).Metode: Penelitian ini merupakan penelitian observasi analitik dengan metode case control pada 46 ibu hamil dengan preeklampsia yang berobat di RSUD Kabupaten Brebes. Dilakukan pemeriksaan kadar timbal darah dengan metode SSA dan SOD serum dengan metode enzyme linked imunosorben assay (ELISA).Hasil: Rerata kada Pb darah dalam penelitian ini adalah 42,35 μg/dl, sedangkan rerata kadar SOD serum adalah 118,43 U/L. Analisis statistik dengan uji korelasi spearman menunjukan tidak terdapat hubungan yang signifikan antara kadar Pb darah dengan SOD serum (r = -0,263, p = 0,078).Kesimpulan: Kadar Pb darah tidak cukup mempengaruhi kadar SOD serum pada pasien Preeklampsia.
Image Encryption and Decryption Using Vigenere Cipher with Compute Unified Device Architecture (CUDA)
Authors: Kusuma Arjuna Wahyu , Damanhuri R. , Baihaqi Muhamad Nur , Sanjaya Labib Habibie
Published: June 2023

Compute Unified Device Architecture (CUDA) adalah Application Programming Interface (API) NVIDIA dan platform yang memungkinkan akses langsung ke set instruksi GPU dan memberi dukungan untuk berinteraksi dengan GPU terkait komputasi paralel. Dengan CUDA, komputasi yang kompleks menjadi lebih cepat dan lebih efisien. Vigenere Cipher adalah kriptografi klasik populer yang mengimplementasikan kunci simetris dengan panjang tertentu. Pada penelitian ini, penerapan enkripsi dan dekripsi Vigenere Cipher dilakukan pada citra serta dengan CPU dan GPU (CUDA). Paralelisasi dengan CUDA menunjukkan hasil eksekusi waktu yang relatif lebih cepat daripada CPU. Persentase rata-rata penurunan waktu adalah 99,46 persen untuk enkripsi serta 99,47 persen untuk dekripsi.Persentase rata-rata penurunan waktu adalah 99,46 persen untuk enkripsi serta 99,47persen untuk dekripsi.
Perbandingan Model Pengembangan Perangkat Lunak Untuk Proyek Tugas Akhir Program Vokasi
Authors: Paksi Angger Binuko , Hafidhoh Nisa'ul , Bimonugroho Sigit Kariagil
Published: June 2023

Salah satu syarat penyelesaian pendidikan pada perguruan tinggi adalah membuat tugas akhir. Hasil akhir dari tugas akhir pada perguruan tinggi vokasi  diarahkan dalam bentuk produk atau alat. Untuk membuat produk perangkat lunak yang tersistematis maka dibutuhkan sebuah metodologi atau siklus pengembangan yang lebih dikenal dengan  Software Development Life Cycle (SDLC). Secara umum SDLC memiliki beberapa tahapan yang dimulai dari tahap perencanaan, analisis, perancangan, implementasi, pengujian sampai pemeliharaan sistem. Kajian yang dilakukan adalah studi komparatif pada model pengembangan prototype, iterative dan agile. Perbandingan dari ketiga model tersebut menyatakan hasil bahwa model prototype membutuhkan perencanaan kebutuhan lebih matang dibanding kedua model lainnya, sedangkan model iterative dan model agile memiliki fleksibilitas lebih baik dalam menghadapi pengembangan ulang berjangka. Ketiga model cocok untuk perangkat lunak yang bersifat customizable, yang membedakan adalah kapan fase penyesuaian perubahan dilakukan. Dari kajian ketiga model didapatkan bahwa masing-masing mempunyai kelebihan dan kekurangan, sehingga pengembang dalam hal ini mahasiswa dapat menentukan model mana yang sesuai untuk pengembangan perangkat lunak proyek tugas akhir berdasarkan karakteristik setiap model.