bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimizing Soil Moisture Sensor Depth for Irrigation Management Using Universal Multiple Linear Regression
Authors: Clutter Melissa , DeJonge Kendall
Published: July 2022

Highlights

Universal multiple linear regression (uMLR) was used to optimize soil moisture sensor depth.

Eight years of soil moisture data from various water treatments were tested, then validated.

The best single observation depth for irrigation management is at 30 cm below soil surface.

A single calibrated soil moisture sensor may be used to aggregate soil water deficit in the root zone.

Abstract. Soil moisture sensors are valuable tools in irrigation management, but due to soil spatial variability it is challenging for point-based sensors to characterize the entire soil water profile. Universal multiple linear regression (uMLR) is a simple machine learning tool that analyzes the relationship between all possible subsets of observations and the prediction of interest. This study used uMLR and volumetric water content data (VWC) taken from maize field experiments at the Limited Irrigation Research Farm near Greeley, Colorado, to optimize the number and placement of soil moisture sensors to characterize the entire soil water deficit (SWD) in the root zone. The uMLR analysis quantified the accuracy of using one or two VWC measurements to represent SWD. We evaluated seven field seasons, with 12 treatments and four replicates of each, where volumetric VWC was typically measured one to three times weekly. Results indicate that the best single sensor depth is at 30 cm, and the best combination of two sensors is at 0 to 15 cm and 60 cm. To validate the experiment, a continuous VWC sensor was used at 30 cm to predict SWD results with acceptable accuracy (RMSE = 4.60 mm). This study suggests that in the sandy loam site evaluated and with varying irrigation levels, soil moisture sensor placement near the soil surface along with knowledge of soil texture can be used to characterize SWD. This technique may be transferable to other locations and soils and shows potential for optimizing irrigation management via soil moisture sensor networks with continuous SWD data. Keywords: Deficit irrigation, Machine learning, Soil moisture sensor, Soil water deficit, Universal multiple linear regression, Volumetric water content.
Near-field chicken skin analysis with focused surface plasmon
Authors: Chakraborty Ipsita , Kano Hiroshi
Published: July 2022

In this proceeding, we characterize the anisotropic properties of skin that strongly scatter propagating light. We conduct the measurement by probing the optical near field from the sample side with focused surface plasmon.
Non-Convex Optimization With Spherical Aberration Compensation for Efficient Excitation in Two-Photon Optogenetics
Authors: Jin Cheng , Liu Chi , Shi Ruheng , Kong Lingjie
Published: July 2022

To stimulate neural ensemble selectively at high resolution, we propose non-convex optimization with spherical aberration compensation algorithm for two-photon optogenetics, which achieves high excitation efficiency and precise axial positioning.
Contrast and axial confinement enhancement in deep imaging via HiLo based line-scanning temporal focusing microscopy
Authors: Shi Ruheng , Zhang Yuanlong , Zhou Tiankuang , Kong Lingjie
Published: July 2022

We propose HiLo based line-scanning temporal focusing microscopy to enhance contrast and axial confinement in deep imaging, and demonstrate its superiority by volumetric imaging of microglia and neurons in mouse brains in vivo.
Facile synthesis of a croconaine-based nanoformulation for optoacoustic imaging and photothermal therapy
Authors: Liu Nian , O'Connor Patrick , Gujrati Vipul , Gorpas Dimitris , Glasl Sarah , Blutke Andreas , Walch Axel , Kleigrewe Karin , Sattler Michael , Plettenburg Oliver , Ntziachristos Vasilis
Published: July 2022

CR760, a croconaine dye with excellent optical properties, was synthesized in a single step and subsequently nano-formulated for optoacoustic imaging and photothermal therapy of cancer.
Phantoms for performance verification and quality control in developing a photonics-based medical device (VASCOVID): a regulatory driven approach
Authors: Sekar Sanathana Konugolu Venkata , Guadagno Claudia Nunzia , Zanoletti Marta , Cortese Lorenzo , Pagliazzi Marco , Lanka Pranav , Munoz Rainer Rothe , Garrido Eduardo , Carteano Talyta , Lacerenza Michele , Buttafava Mauro , Parsa Shahrzad , Weigel Udo M. , Torricelli Alessandro , Pifferi Antonio , Contini Davide , Durduran Turgut , Andersson-Engels Stefan
Published: July 2022

We propose a standardized approach for performance assessment and quality-control of the novel VASCOVID system based on optical phantoms. This approach is tailored to meet the requirements of the Medical Device Regulation, and is extendable to other biophotonics devices.
Fast antibiotic susceptibility testing via holographic imaging
Authors: Sedaghat Zohreh , Degout-Charmette Elodie , El Azami Meriem , Rol Fabian , Mahe Pierre , Chareire Anne-Coline , Nouvelli-Rousseau Armelle , Champion Thibault , Franceschi Christine , Mallard Frederic , Josso Quentin
Published: July 2022

We proposed a phenotypic image-based AST via digital inline holographic microscopy (DIHM) and dedicated machine learning algorithms. The analysis relies on monitoring single bacteria during the kinetics of changes induced by an antibiotic.
Determination of Optical Properties from Spatially Resolved Diffuse Reflectance Using Relative and Absolute Data
Authors: Farooq Hunain , Gladytz Thomas , Hoppe Alexander , Grosenick Dirk
Published: July 2022

A comprehensive phantom study on spatially resolved reflectance shows noisy or systematic deviations from the true optical properties for relative data analysis depending on the applied spatial interval. Absolute data analysis yields correct results.
Optimal Spectral Combination of a Hyperspectral Camera for Intraoperative Hemodynamic and Metabolic Brain Mapping
Authors: Caredda Charly , Mahieu-Williame Laurent , Sablong Raphaël , Sdika Michaël , Guyotat Jacques , Montcel Bruno
Published: July 2022

We present a Monte-Carlo study for the identification o f t he hyperspectral camera’ spectral bands for intraoperative hemodynamic and metabolic brain mapping. We also show that a RGB camera is suitable for hemodynamic brain mapping.
Single pulse optoacoustic temperature measurement
Authors: Seifert Eric , Abbas Hossameldin , Brinkmann Ralf
Published: July 2022

During retinal laser treatment with a single microsecond laser pulse in the range of 5-50 µs, the induced optoacoutics transients are used to determine the temperature rise and microbubble formation in case of appearance.
Histological Imaging of Unstained Cancer Tissue Samples by Circularly Polarized Light
Authors: Dremin Viktor , Sieryi Oleksii , Borovkova Mariia , Näpänkangas Juha , Meglinski Igor , Bykov Alexander
Published: July 2022

We introduce a high-resolution polarization imaging approach for automatic stand-alone classification of the unstained breast cancer tissue blocks by using K-means cluster analysis of the Stokes vectors projected on the Poincaré sphere.
Investigation on Hyperspectral Imaging Derived Indices for Perfusion Monitoring
Authors: Volgger Veronika , Felicio-Briegel Axelle , Freymüller Christian , Rühm Adrian , Linek Matthäus , Sroka Ronald
Published: July 2022

Hyperspectral imaging to monitor perfusion parameters during the Allen test was performed in 20 volunteers. Clear differences in tissue oxygenation and hemoglobin index during rest, occlusion and reperfusion were visually and computationally evident.
Intraoperative Resting State Functional Connectivity Based on RGB Imaging
Authors: Caredda Charly , Mahieu-Williame Laurent , Sablong Raphaël , Sdika Michaël , Schneider Fabien C. , Guyotat Jacques , Montcel Bruno
Published: July 2022

We present the methodology for the intraoperative identification of resting state networks using RGB imaging. The results show a good correlation between the resting state and the brain areas identified by electrical brain stimulation.
In-vivo tracking of potassium niobate nanocrystals by means of a tunable nonlinear high energy widefield microscope
Authors: Vittadello Laura , Klenen Jan , Imlau Mirco , Koempe Karsten , Meyer Christian , Paululat Achim
Published: July 2022

In-vivo tracking based on harmonic nanoparticles is so far not exploited because of a lack on an appropriate tool. Here we present a new approach based on the re-design of the laser space parameters.
Self-Calibrated Pulse Oximetry Based on Absorption Changes in Photon Pathlength
Authors: Wu Jingyi , Gunther Jacqueline , Jayet Baptiste , Ray Neil , Andersson-Engels Stefan , Kainerstorfer Jana M.
Published: July 2022

Finger pulse oximetry traditionally assumes a semi-infinite, homogenous media where the wavelength dependent differential pathlength is assumed or calibrated for. We developed an algorithm which does not require this assumption.
Reconstruction of Absorption Maps by Digital Tomosynthesis
Authors: Carbone Nicolás A. , Vera Demian A. , Iriarte Daniela I. , Pomarico Juan A. , Macdonald Rainer , Grosenick Dirk
Published: July 2022

We developed and applied tomosynthesis algorithms to obtain 3D maps of the absorption properties of slab-like diffuse media. Spatial resolution was found to be superior to conventional 3D reconstruction by a finite element method.
Sensitive Optomechanical Ultrasound Sensor in a Silicon Photonic Chip towards Single-shot Photoacoustic Imaging with an Ultrasound Sensor Matrix
Authors: Pieters Cedric , Westerveld Wouter J. , Mahmud-Ul-Hasan Md. , Severi Simone , Shnaiderman Rami , Ntziachristos Vasilis , Billen Margo , Kjellman Jon , Jansen Roelof , Rochus Veronique , Rottenberg Xavier
Published: July 2022

We propose a new opto-mechanical ultrasound sensor (OMUS) enabled by an innovative silicon photonics waveguide. We present experimental results up to 30 MHz, a 10-sensor array proof-of-concept and our latest findings.
ROBUST OPTICAL AUTOFOCUS SYSTEM UTILIZING NEURAL NETWORKS APPLIED TO AUTOMATED MULTIWELL PLATE STORM MICROSCOPY
Authors: Lightley J. , Görlitz F. , Kumar S. , Kalita R. , Kolbeinsson A. , Garcia E. , Alexandrov Y. , Bousgouni V. , Wysoczanski R. , Barnes P. , Donelly L. , Bakal C. , Dunsby C. , Neil M.A.A. , Flaxman S. , French P.M.W.
Published: July 2022

We present a robust, low-cost neural network-based optical autofocus system that can operate over a range of ±100µm with submicron precision, enabling automated high-content super-resolved imaging with a 1.3 NA objective lens
Speckle-Based Super-Resolution Imaging via a Multimode Fiber
Authors: Verweg Max V. , Lochocki Benjamin , de Boer Johannes F. , Amitonova Lyubov V.
Published: July 2022

Far-field optical microscopy typically suffers from limited resolution, speed and imaging depth. Endoscopic imaging via a multimode fiber combined with wavefront shaping and computational reconstruction offers imaging beyond the Abbe and Nyquist limits.
Fiber coupled, 20 MHz Repetition Rate, sub ps Ti:sapphire Laser for in vivo Nonlinear Microscopy of the Skin
Authors: Krolopp Ádám , Fésűs Luca , Szipőcs Gergely , Wikonkál Norbert , Szipőcs Róbert
Published: July 2022

A fiber coupled, sub ps Ti:sapphire laser suitable for in vivo, stain free, 3D imaging of skin alterations is introduced. It is pumped by a low cost, 2.1 W pump laser and delivers 0.6 1 ps high peak power pulses optimized for fiber delivery.
Time-Domain Diffuse Optics Beyond Pile-Up Limits: A Simulation Study Based on Relevant Figures of Merit
Authors: Avanzi Elisabetta , Di Sieno Laura , Behera Anurag , Contini Davide , Mora Alberto Dalla
Published: July 2022

Large-area detectors for time-domain diffuse optics are increasingly available, with enormous gain in collected light intensity. Pile-up distortion is nowadays the main limit, here studied to anticipate the possibility of a new working modality.
Energy-efficient bandwidth enhancement of Brillouin microwave photonic bandpass filters
Authors: Raj Piyush , Parihar Reena , Dhawan Rajveer , Choudhary Amol
Published: July 2022

Stimulated Brillouin scattering has been widely utilized to realize frequency-agile narrowband and wideband microwave photonic bandpass filters by primarily utilizing its gain response. However, most demonstrated wideband Brillouin-based filters are limited in operation due to the high-power requirements for bandwidth tailoring. We propose a novel approach to realize wideband reconfigurable, Brillouin-based microwave photonic bandpass filters employing RF interferometry and advanced phase engineering. Demonstrated filters exhibit >20 dB selectivity and >700 MHz bandwidth using only 8 dB peak SBS gain (of intrinsic linewidth 30 MHz), and total optical pump power of only ∼14 dBm. We also demonstrate frequency tunability up to 22 GHz. The filter passband has a very flat and highly linear phase response, thus exhibiting zero group delay which we have experimentally verified by propagating an RF pulse at 10.25 GHz. Furthermore, the filter does not suffer from added Brillouin noise in the passband, which is a major advance compared to conventional Brillouin-based microwave photonic sub-systems. This paper presents simulations, mathematical analysis, and experimental results of the proposed filter. The proposed filter demonstrates a pathway toward power-efficient Brillouin-based microwave photonic filters, utilizing SBS responses, in combination with phase manipulation for advanced filtering operations.
Temperature stability of individual plasmonic Au and TiN nanodiscs
Authors: Bower Ryan , McPolin Cillian P. T. , Krasavin Alexey V. , Zayats Anatoly V. , Petrov Peter K.
Published: July 2022

Refractory plasmonic materials are of interest for high-temperature plasmonic applications due to their increased thermal stability when compared to gold and silver. Titanium nitride (TiN) has been highlighted as a promising refractory material, offering both strong plasmonic and thermal performance. In this work, we analyze the stability of both the structural and optical response of individual plasmonic nanodiscs of various diameters subjected to elevated temperature conditions in air. Using cathodoluminescence spectroscopy, we trace the resonance spectra and shape modifications of the same single TiN and Au discs annealed at increasing temperatures up to 325 °C. TiN discs display greater morphological stability, but the optical properties of both materials deteriorate from 200 °C, although the mechanisms of degradation are different. The results are essential for optimizing nanostructured materials for high temperature nanophotonic applications.
Intencije novog stvarnog prava u procesu uspostave tačne i potpune javne evidencije nekretnina
Authors:   University of Tuzla, Mutapčić Hamid , Osmanbegović Kenan
Published: July 2022

U novom zemljišnoknjižnom i stvarnom pravu u Bosni i Hercegovini predviđena su različita i neujednačena rješenja u materiji sticanja stvarnih prava na nekretninama, što može kompromitirati aktuelni proces reforme zemljišnoknjižnog prava i dodatno otežati ukupni pravni promet nekretnina. Utvrđivanje mjerodavnog prava esencijalno je važno, ne samo zbog uspješnog okončanja navedenog procesa reforme, već i zbog očuvanja postojećeg sistema evidentiranja nekretnina i prava na nekretninama, koji na ovim prostorima egzistira još od 1884. godine. U okolnostima u kojima se nameće potpuno drugačiji koncept javne evidencije nekretnina na prostoru oba bosanskohercegovačka entiteta, poljuljane su temeljne pravne vrijednosti našeg pravnog poretka, koje su rezultat višedecenijskog i nama svojstvenog načina razumijevanja ovog problema. Zbog svega navedenog, potrebno je krenuti od osnovnih intencija novog stvarnog prava u Bosni i Hercegovini i od duboko ukorijenjenih pravnih postulata, koji su neodvojivi dio naše bogate pravne tradicije i ustaljenog načina rješavanja pravnih sporova između knjižnih i vanknjižnih titulara stvarnih prava na nekretninama.
Mixed-reality simulations as a tool to enhance parent-teacher conferencing in initial teacher education
Authors: Scarparolo Gemma , Mayne Fiona
Published: July 2022

Communicating effectively with parents and carers is an important skill for pre-service teachers to develop. However, they often graduate underprepared due to limited opportunities for parent interaction during their course. When engaging with parents, pre-service teachers must be able to confidently articulate their pedagogical choices, provide examples of what students will do and justify why these choices have been made. One solution lies in providing opportunities for pre-service teachers to practise parent-teacher conferencing using mixed-reality simulation technology. In this study, differentiated instruction served as the context, and reflective practice, teacher self-efficacy theory and experiential learning theory were employed as the theoretical frameworks to build on an existing parent-teacher conferencing model developed by Dotger et al. (2008) to develop a new model for use with pre-service teachers. The model uses mixed-reality simulation technology and incorporates standardised parents and students, peer observation and opportunities for feedback and reflection. The model was developed and trialled with pre-service teachers in a core unit in an initial teacher education course at an Australian university. Results indicated that the pre-service teachers felt more prepared for parent-teacher conferencing after the technology-enhanced role-play experience.
Implications for practice or policy:

Mixed-reality simulation technology can be a valuable tool for authentic role-play experiences for pre-service teachers when preparing for parent-teacher conferencing.
Simulation technologies can provide opportunities for pre-service teachers to practise aspects of teaching, such as parent-teacher conferencing, in a safe and low-stakes environment.
Simulation technologies can provide powerful opportunities for pre-service teachers to reflect and learn from peers through peer observation and reflection.
A rare presentation of type II Abernethy malformation and nephrotic syndrome: Case report and review
Authors: Wu Xin , Gu Weizhong , Lin Yongzhi , Ye Lina
Published: July 2022

Type II Abernethy malformation is an extremely reported congenital extrahepatic portosystemic shunt in complication with nephrotic syndrome. We present the case of an 8-year-old boy who presented with symptoms of type II Abernethy malformation and nephrotic syndrome. This diagnosis of this type II Abernethy malformation was based on physical examination, blood tests, urinalysis, nephrotic and hepatic function tests, routine clinical lipid measurements, abdominal ultrasonography, and computed tomographic angiography. A kidney biopsy revealed the pathological features of nephrotic syndrome. This is the second reported patient diagnosed with type II Abernethy malformation and nephrotic syndrome. Captopril treatment was effective in improving the symptoms of this case. A patient with type II Abernethy malformation related to immune complex-mediated glomerular injury was effectively improved with medication. Type II Abernethy malformation is a causative factor of immune complex-mediated glomerular injury in nephrotic syndrome. Captopril treatment significantly improved the symptoms in this case.
Some simple biset functors
Authors: Bouc Serge
Published: July 2022

Let 𝑝 be a prime number, let 𝐻 be a finite 𝑝-group, and let 𝔽 be a field of characteristic 0, considered as a trivial

F
⁢
Out
⁢

(
H
)

\mathbb{F}\mathrm{Out}(H)

-module.
The main result of this paper gives the dimension of the evaluation

S

H
,
F

⁢

(
G
)

S_{H,\mathbb{F}}(G)

of the simple biset functor

S

H
,
F

S_{H,\mathbb{F}}

at an arbitrary finite group 𝐺.
A closely related result is proved in the last section: for each prime number 𝑝, a Green biset functor

E
p

E_{p}

is introduced, as a specific quotient of the Burnside functor, and it is shown that the evaluation

E
p

⁢

(
G
)

E_{p}(G)

is a free abelian group of rank equal to the number of conjugacy classes of 𝑝-elementary subgroups of 𝐺.
Application of nonlinear adaptive technology in GPS positioning trajectory of ship navigation
Authors: Dong Haihui , Yin Hui , Xu Qing
Published: July 2022

This article addresses the challenges in the periodic law of high-frequency motion and effectively identifies the influence of high-frequency motion on ship dynamic positioning. The main aim of the article is to design a dynamic positioning filter by applying nonlinear adaptive technology to eliminate the disturbance to the ship’s dynamic propulsion system. This article proposes a method to control the ship’s dynamic positioning and apply nonlinear adaptive technology in the dynamic positioning control in order to obtain the ship’s state and reference coordinate system. Further, a mathematical model and a dynamic environmental model in ship dynamic positioning control are analyzed in this work. The control index model is located by the experimental data, and the control performance is improved within the allowable range. The experimental analysis revealed that if the initial position of the ship is (0, 0, 0), then the desired position is (100, 100, 0). The operating ranges of –0.6 × 107 to 0.6 × 107, –0.4 × 107 to 0.4 × 107, and –5.6 × 108 to 5.6 × 108 are used. The ranges of motion of –150 to 150, –130 to 130, and –5 to 5 are observed, respectively, along with a wind disturbance force of 8 m/s. The wave disturbance force of 1 m/s is observed along with 90° wind. It was observed from the experimentation that the ship could basically achieve a stable operation and control the environmental disturbance within the error range. The outcomes reveal that the proposed dynamic positioning model based on nonlinear adaptive technology has strong stability and accuracy.
Doctus Amyclas. I presagi della tempesta in Luc. 5.539‒560 tra epica, poesia didascalica e retorica
Authors: Campodonico Nicolò
Published: July 2022

In response to Caesar, who intends to reach Antonius in Italy, the boatman Amyclas sets out the celestial and terrestrial signs that foretell a storm and advises against putting out to sea (Luc. 5.539‒560). In this speech Lucan draws on the treatment of such phenomena in the didactic poems of Aratus and Vergil, but the allusions are remodelled in epic language and adapted to the narrative context of the episode. Further, in the story of Amyclas Lucan develops dramatic ideas mentioned in the specific passages in which Aratus and Vergil reflect on the utility of their teachings. Thus the boatman’s meteorological doctrina is highlighted, though he is unable to gain any advantage from it. In fact, in contrast to Palinurus with Aeneas in Aen. 5 and to the rector ratis with Pompey in Luc. 8, Amyclas does not try to dissuade Caesar from the voyage and agrees to accompany him. His speech shows affinities with declamations on the theme of sailing and the presence of adverse omens; however, the speech of Amyclas sounds like a suasoria that has been interrupted. This aspect focuses the impossibility of communication between the two characters: Amyclas, powerlessly external to the civil wars, can only appeal to the force of nature, which Caesar impiously defies.
Kinetic Responses to External Cues Are Specific to Both the Type of Cue and Type of Exercise in Adolescent Athletes
Authors: Barillas Saldiam R. , Oliver Jon L. , Lloyd Rhodri S. , Pedley Jason S.
Published: July 2022

Barillas, SR, Oliver, JL, Lloyd, RS, and Pedley, J. Kinetic responses to external cues are specific to both the type of cue and type of exercise in adolescent athletes. J Strength Cond Res 37(3): 597–605, 2023—The purpose of this study was to examine how external cues influence kinetics during isometric and dynamic tasks in adolescent athletes. Fifteen adolescent male soccer players performed an isometric midthigh pull (IMTP), unloaded and loaded squat jumps (SJs) (15 and 30% of body mass), countermovement jump (CMJ), and drop jump (DJ) using a neutral or external force-specific or velocity-specific cues. Cue type had limited effects on outcomes in the IMTP or SJs, with mostly trivial (g < 0.20), nonsignificant differences (p > 0.05) across kinetic variables. In the CMJ and DJ, a force cue significantly (p < 0.05) increased jump height (g = 0.43 & 0.52) compared with a velocity cue, but in the DJ, a force cue significantly increased jump height (g = 0.52) compared with both a neutral and velocity cue. However, a velocity cue significantly (p < 0.05) reduced ground contact time (g = 0.73–1.52) and time to peak force (g = 0.50–1.29) in both the CMJ and DJ when compared with a force and neutral cue and increased force and power-related measures (g = 0.33–1.12) in the CMJ and DJ when compared with a force cue. In adolescent athletes, the type of external cue had limited effects on kinetic measures in an IMTP and SJ but differential effects on both a CMJ and DJ, suggesting cues have more effect with increasing movement velocity. Consequently, practitioners working with adolescent athletes should consider both the type of exercise and the desired outcome when providing external cues.
Effects of Silica Fume Purity on Behavior of Ultra-High Performance Concrete
Authors: Carey Ashley S. , Howard Isaac L. , Shannon Jay
Published: July 2022

The use of silica fume in high-strength and ultra-high performance concretes has been studied from many perspectives including optimum replacement rate, implications on late-age strengths, and rheological properties. However, the effects of silica fume purity (e.g., silicon dioxide [SiO2] content) are not nearly as well documented, especially when shorter duration curing regimes at higher temperatures are utilized. In this paper, four silica fumes with varying SiO2 contents were used to quantify the effects of SiO2 purity in silica fume on the behavior of ultra-high performance concrete. Several variables were evaluated to determine if changes in SiO2 content significantly influenced properties of interest. Overall, silica fume purity had the most impact on thermal set time, maximum temperature generated during hydration, and compressive strength. Thermal set time values differed by over 7 h, and maximum temperatures differed by 7°C. After one day of room-temperature curing, compressive strength varied by 50 MPa, and elastic modulus varied by 14 GPa. When specimens were cured at elevated temperatures for short durations of time (e.g., one to six days), fc values ranged from 35 to 47 MPa.
The Effects of Electroless Ni-P Coated SiC on the Properties of Magnesium Composite
Authors: Muraliraja R. , Pradeepkumar K. , Mohanraj P. , Vinod Kumar T. , Dhanasekaran C. , Chandrasekaran M. , Ragavanantham S. , Shaisundaram V. S.
Published: July 2022

Reuse of magnesium alloy is an essential approach to protecting the natural resources, and it eliminates the waste products dumped in landfills, water, and air. Therefore, the first time the scrap magnesium alloy materials are collected and fabricated, the newly formulated magnesium composites use different techniques, such as vacuum, squeeze, and stir casting. AZ91 alloy from the automobile scrap is used as matrix material, and silicon carbide (SiC) is used as reinforcement. Electroless nickel-phosphorous coating is applied to the ceramic particles to avoid unwanted chemical reactions during the casting process. The adhesion between the matrix and reinforcement is improved by masking the surface of the nonmetallic SiC particles. Magnesium composite is most commonly used in automotive and aerospace applications to reduce weight and improve the strength of the component. The magnesium composite is fabricated through four different methods, and the substrates are tested and analyzed for better results. The sample results taken from the composites are compared to the magnesium alloy obtained from the scrap stock. Comparatively, the substrate produced using squeeze casting shows a lower porosity level of 5.5 %, and it is clearly shown in optical images. Significant improvements in the mechanical properties, such as hardness and compression strength, are obtained, and the wear rate in the prepared composites is reduced to 28 % for the sample produced using squeeze casting instead of the vacuum and stir casting processes.
Depth of Penetration Model in AWJ Cutting Process Considering the Effect of Frictional Drag of Kerf Wall on the Water-Jet Velocity
Authors: Panchal Ketan D. , Hafiz Shaikh Abdul
Published: July 2022

Analytical modeling and experimental verification for the process are vital for selecting an optimum range of process parameters in abrasive water-jet (AWJ) cutting. Many numerical models for the prediction of depth of penetration in the AWJ machining process have been presented by various researchers in the past years. However, very little work that has been represented has taken into account the effect of kerf wall frictional drag on the AWJ velocity. The present paper aims to develop a modified mathematical model for penetration depth using a dimensional analysis approach. The kerf wall frictional drag coefficient has been included in the proposed model to explain the variation of particle velocity at a particular depth of penetration. The results predicted with the theoretical model are validated under various process parameters through the AWJ machining experiments. The predicted values of depth of penetration using the proposed model agree well with the experimental data.
OMEGA-3 YAĞ ASİDİ NANOEMÜLSİYONLARININ FARKLI KOŞULLARDA FİZİKSEL STABİLİTELERİNİN BELİRLENMESİ
Authors: ABACI Zeynep Merve , ULUATA Sibel
Published: July 2022

Bu çalışmada, omega-3 yağ asitlerince zengin balık yağı (%5) ve Tween 80 (T80), Quillaja Saponin (QS), Gam Arabik (GA) sürfaktanları (%1) kullanılarak mikroakışkanlaştırıcı yardımı ile su içinde yağ (Y/S) nanoemülsiyonları hazırlanmıştır. Nanoemülsiyonların fiziksel stabiliteleri; pH (4-7), sıcaklık (40-80oC) ve iyonik şiddet (0-500 mM NaCl) etkisi ile belirlenmiştir. Nanoemülsiyonların partikül boyutlarının 125±0.40 ile 542±0.45 nm ve partikül yüklerinin −12.80±0.63 ile −69.1±0.14 mV aralığında olduğu tespit edilmiştir. T80 ve QS ile stabilize edilen nanoemülsiyonların farklı pH, sıcaklık ve iyonik şiddet koşullarında fiziksel stabilitelerinin değişmediği görülmüştür. GA ile stabilize edilmiş nanoemülsiyonların ise pH, sıcaklık ve iyonik şiddet etkisine nispeten hassas olduğu ancak fiziksel stabilitesinde önemli bir değişiklik olmadığı görülmüştür. Sonuç olarak, omega-3 ile zenginleştirilmiş fiziksel olarak stabil nanoemülsiyonlar hem sentetik (T80) hem de doğal (QS ve GA) sürfaktanlar kullanılarak üretilmiştir. Elde edilen bu sonuçların omega-3 yağ asidi ile zenginleştirilmiş gıda üretimi ile ilgili çalışmalara katkı sağlayacağı düşünülmektedir.
Validation of Solar Dehydrator for Food Drying Applications: A Granny Smith Apple Study
Authors: Ingham Jude , Kanungo Muskan , Beauchamp Brandon , Korbut Michael , Swedish Michael , Navin Michael , Zhang Wujie
Published: July 2022

Food loss is a global issue that may be alleviated with effective dehydration strategies. Solar dehydration, rather than traditional sun-drying, is one method that could allow for the safe, efficient preservation of food materials. In this study, passive solar dehydration was achieved using a psychrometric chamber to model the environment of sub-Saharan Africa, where the temperature was the major focus (24.3 °C to 29.4 °C). A mass decrease of 88.56% was achieved within 9 hours. Microbial testing (total aerobic bacteria, Gram-negative bacteria, and total yeasts and molds) demonstrated no difference (all negative) between food stored at 4 °C and dehydrated food, indicating that the dehydrator introduced no new contamination. A 16.0% decrease in vitamin C (VC) concentration was observed due to the lability of VC. Insight into the visual appeal of the food samples was provided by measuring browning values, where it was found that dehydrated green apples are significantly less brown than the sample exposed to air for the same length of time. Passive solar dehydrators could provide a simple method to reduce food waste and maintain nutritional content and visual appeal.
Peculiarities of the application of the knowledge of mathematics in real-life situations and solving problems in case of senior form students having moderate special needs
Authors: Tomėnienė Laima
Published: July 2022

The article deals with the peculiarities of the application of the knowledge of mathematics in real life situations of students with moderate special needs who study in senior forms of mainstream schools. The research data have been collected applying quantitative approach. By the method of questionnaire survey it has been investigated how students with moderate special educational needs who study in 8-10 forms of mainstream school are able to apply possessed knowledge of mathematics in real-life situations and solving problems of practical character, the peculiarities of their functional mathematical literacy have been assessed. The results of the research have shown that the level of functional mathematical literacy of the majority of students with moderate special educational needs who have participated in the pilot research is not sufficient, the knowledge of mathematics is not strong, students lack practical abilities and perception how and where possessed knowledge could be applied in everyday activity.
Potentiality of socio-educational study programmes’ improvement at Lithuanian universities
Authors: Alifanovienė Daiva
Published: July 2022

The article deals with the attitude of the students of socio-educational (social education/work) study programmes of different Lithuanian universities towards their chosen study programmes in the aspects of subject blocks, modules and practical placements. In order to identify the students’ assessments the written questionnaire survey (Jankauskaitė, 2009) has been applied, using the half-closed type questionnaire. The survey was attended by Bachelor students of socioeducational (social education/work) study programmes of Lithuanian universities (N=193).
Ideal profile of educator for adolescents without a valid family support
Authors: Baranauskienė Ingrida , Radzevičienė Liuda , Grazioli Porfirio
Published: July 2022

In many countries the concept of educator has rather wide understanding and interpretation. Presented theoretic Christian issue reveals a profile, as far as possible close to the model of vocational counseling for adolescents without a valid family support. The needs that are common to this group of youngsters have, obviously, totally peculiar characteristics, and in this way could be described as special needs. To these special needs and necessities are added those deriving from the ways of management of living in a community, when this, for example, is based on the pedagogical methods of the so-called self-government.Theory and practice applied in the community of Città dei Ragazzi presents educational action carried out by Msgr. J. P. Carroll-Abbing. The main issue of which is support, assistance and love for youngsters coming from different parts of the world.
Possibilities for management of conflicts among pre-school age children by applying methods of work with fairy-tales
Authors: Bražienė Nijolė , Nemaniūnienė Rita
Published: July 2022

The article introduces the qualitative research results of the pedagogical experiment which is aimed at the assessment of the impact of work with fairy-tales in development of pre-school age children’s ability to constructively solve arising conflicts among children. It was found out that fairy-tales could be the means for control of conflicts among pre-school age children when the content of fairy-tales and the process of their discussion were purposively oriented towards educated children’s ability to constructively manage conflict situations and strengthen social skills. When applying methods of the work with fairy-tales, it is possible to correct the attitude of children with problematic behaviour towards themselves and their relations with friends, to make impact on the internal condition of a child, i.e. to implement better self-assessment for those who are insufficiently aware of their role in group as well as to help those whose self-assessment is too high to see themselves from the point of view of others; positive changes of interpersonal social and communicative abilities (solution of problems, conflicts, initiative, tolerance, respect to each other etc.) were noticed in joint activities.
Comparative analysis of study quality assessment of students of Šiauliai university (Lithuania) and Open international university of human development “Ukraine” (Ukraine)
Authors: Bakanovienė Tatjana , Gerulaitis Darius , Povilaitienė Neringa , Kolchenko Kateryna
Published: July 2022

In the article the research data on study process assessment in two Lithuanian and Ukrainian Higher Education Institutions (N = 244) have been presented. The research aim is the exploration of the assessment of students studying at Šiauliai and “Ukraine” universities about the study process. Main fi ndings and conclusions states, that student’ of both countries Higher Education Institutions similarly assess peculiarities of the study process. Assessing organization of the study process in the aspect of e-teaching/learning technologies, it was noticed that respondents (of both universities) favourably assessed their manifestation in the study process but the obtained statistically signifi cant differences demonstrate different levels of preparation of universities for such organisation of the study process.
An initial investigation of preservice teachers in the United States and possible applications to Ukraine: perceived knowledge of response to intervention
Authors: Weishaar Phillip M. , Fuchs Wendy W. , Williams Llena R.
Published: July 2022

Ukraine and the United States are engaged in education reform movements to improve quality of future teachers. Reform in the United States focuses on the use of evidence-based practices and data-based decision making. Reform in Ukraine focuses on democratic, learner-centered education. Using one university in the United States, this research investigates the degree to which preservice teacher candidates in different teacher training programs (early childhood, elementary, secondary, special education) perceive knowledge of components from the Response to Intervention model, a major focus of school reform. Application of the study to Ukraine is discussed.
Rare diseases and the quality of life of caregivers
Authors: Michalík Jan
Published: July 2022

The quality of life of persons caring for a family member with rare disease is discussed in the article and the results of the quantitative research (N = 298) in the Czech Republic are presented. The idea of the research is to determine basal psycho-social markers defining the quality of life of persons caring for a family member with rare disease and describe phenomena characterizing the conception of understanding the term quality of life by representatives of the target group (and compare this conception with how the term is understood by the intact population). Long-term care for a child with a serious, incurable disease means a significant change of life situation including not only personal growth, but also social, partner, health and economic associations. In the present research it has been focused on the existence of states and changes that were evaluated by caregivers themselves.
Identification of peculiarities of reactive anxiety experienced by professionals of socioeducational activities, employing quantitative and qualitative methods
Authors: Alifanovienė Daiva , Vaitkevičienė Asta , Lučinskaitė Laura
Published: July 2022

The article deals with peculiarities of the reactive anxiety state of professionals of socioeducational activities (social pedagogues and social workers). Spielberger’s and Chanin’s personal anxiety scale, illustrating anxiety peculiarities experienced by these professionals, is given. Evaluating peculiarities of these professionals’ reactive anxiety, methods of descriptive mathematical statistics, multidimentional statistics (factor analysis) were used, the method of qualitative research semi-structured interview, content analysis were also applied. It was found that the majority of socioeducational activity professionals experienced mild reactive anxiety, about one third of respondents felt moderate reactive anxiety and a small part, severe reactive anxiety. Such state of respondents enables to avoid big anxiety and psychosomatic disorders.
Strategies of coping with the difficulties of young people with mental disorders who have left institutional care for children and youth
Authors: Lileikienė Alma
Published: July 2022

Coping with the difficulties according to the model of coping process created by Moos and Schaefer (Bagdonas (managing editor), 2007, p. 198) depends on personal features, social resources, ability to evaluate the situation. If there are no resources required, a person cannot employ suitable coping strategies. The more person’s mental health is disordered the more his/her coping is directed towards emotions and less adaptive behaviour. It is also reflected in coping with the difficulties among persons with mental disorders who grew up under institutional care.The article generalizes the researches on how persons with mental disorders who have left institutional care for children and youth cope with their difficulties, what coping strategies they use.
Specific approach to children with behavioural problems
Authors: Hutyrová Miluše
Published: July 2022

This is a qualitative research study focused on the issue of children with behavioural problems in the Czech Republic. It represents a collection of complete opinions of experts from various professions on the manifestations, causes and possibilities of diagnostic and, in particular, intervention methods in these children. The goal of the study was to defi ne the time-proven approaches, methods and forms of work that could be generalized and recommended as examples of good practise for working with the given target group under the conditions of schools and school consulting facilities
Is the contribution of Australian research to the national 2019 clinical practice guidelines for keratinocyte cancer adequate? A simple analysis
Authors: Thoumi Andrew , Fogarty Gerald B. , Paton Elizabeth J. , Shumack Stephen
Published: July 2022

Introduction: The Australian 2002 National Health and Medical Research Council (NHMRC) treatment guidelines for non-melanoma skin cancer (NMSC) were updated in 2008. At this time, the lack of high-quality Australian research conducted between 2002 to 2008 was noted. The primary aim of the present study was to assess the improvement in the quantity and quality of Australian research in the 2019 keratinocyte cancer guidelines. Secondary aims included an assessment of the quantity and quality of Australian research in comparison to the guidelines provided by the other selected countries, and an evaluation of the improvements in the Australian contribution since 2008. Method: Surgical (Sx) and radiotherapy (RT) treatment sections were interrogated. The analysis was simple. Each reference was counted as one unit. The quantity assessment was carried out by categorizing the references according to their country of origin: Australia, United Kingdom (UK), United States (US) and European Union (EU) countries, which were grouped as one country (EU) for the purpose of this study. The number of references from each country were then added up. To assess for quality, all references were ranked according to the American Society of Plastic Surgeons (ASPS) rating scale. A quality ratio for each country was then calculated by dividing the total number of prospective trials (i.e., levels I and II) by the number of retrospective studies (level III and lower) from each country if the numbers were sufficient. To evaluate the Australian improvement since 2008, Australian references were first categorized according to their year of publication (2002 to 2017), and then allocated to one of four bins of class intervals representing time periods. Results: Twenty-five of the 133 Sx references in the 2019 guidelines were Australian, which was less than the US (58) and EU (37), but better than the UK (12). Quality ratios were: Australia 0.8, UK 1.4, US 0.31, and EU 0.48. Of the 238 RT references, Australia contributed 53, US 107, EU 62, and UK 16. Quality ratios were: Australia 0.06, UK 0.3, US 0.18, and EU 0.34. Australia’s contribution to the UK and US RT guidelines were evaluated. For the UK RT guidelines (11 references), Australia contributed 3, UK 1, US 2 and EU 5. For the US ASTRO guidelines (101 references), Australia contributed 20, UK 1, US 44 and EU 36. Quality ratios were Australia 0.11, US 0.19 and EU 0.2. For Australian research overtime (2002-2017), the quantity and quality of Sx papers are decreasing; whereas for RT, the quantity is increasing but the quality remains poor. Conclusion: The contribution of Australian research to Australia’s own keratinocyte cancer guidelines is not the highest and did not improve over the period of evaluation. The same can be stated for Australia’s research contribution to the UK and US RT guidelines. Australia needs to do more high-quality research.
Autosomal –dominant epidermodysplasia verruciformisun satisfactorily treated with ingenol mebutate: a case report
Authors: Vukicevic Jelica
Published: July 2022

Background: Epidermodysplasia verruciformis (EV) is a rare, usually autosomal-recessive inherited disorder characterised by development of flat wartsortinea versicolor-like lesions on sun exposed area caused byspecific human papillomavirusis (HPVs). Several nonsurgical treatment modalities were tried with temporary results, but successful treatment of EV with ingenol mebutate (Picato) has been reported recently. In this case, autosomal-dominant EV unsatisfactorily treated with ingenol mebutate is shown. Case: A 58-year-old woman with EV was unsuccessfully treated with traditional therapeutical modalities. Ingenol mebutate (0,5%) was administered for 2 days and a significant improvement in lesion reduction was achieved. However, after 2 months there was a recurrence with the appearance of new lesions and an increase of existing ones. Conclusion: This report is another confirmation that EV remains a therapeutic challenge.
Application prospects of multilineage differentiating stress-enduring (Muse) cells in the treatment of skin diseases
Authors: Mao Xiao-Qian , Zhang Ru-Zhi , Jin Hui-Ling
Published: July 2022

Multilineage differentiating stress-enduring (Muse) cells are a subgroup of mesenchymal stem cells (MSCs) that express stage-specific embryonic antigen-3 (SSEA-3) and CD105. It is capable of generating cells representing all three germ layers from a single cell and is non-tumorigenic. Muse cells can efficiently migrate and integrate into damaged tissues that produce sphingosine-1-phosphate (S1P), while Muse cells specifically express S1P receptor 2. The factors secreted by Muse cells play anti-inflammatory, anti-fibrosis, and anti-apoptotic effects, and cooperate to complete the function and structure repair of the damaged group. This review summarizes the basic characteristics of Muse cells and describes their application in skin repair.