bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of coating material and processing parameters on acrylamide formation in potato patties
Authors: Shakeela Heeba , Mini Navami M. , Abraham Billu , Natarajan Nayana , Nisha Prakasan
Published: April 2022

Influence of moisture content (MC, 65–35%), frying temperature/time (150–200 °C, 4–12 min), and coating materials (patties coated with bread crumbs – PBC and patties coated with wheat semolina – PSC) on acrylamide formation in potato patties was investigated. Acrylamide content increased with decrease in MC and increase in temperature/time, except for PBC at higher temperatures (180 °C, 8 & 12 min and 200 °C). Morphology analysis suggested PBC to possess more porous coating that resulted in higher oil penetration leading to higher heat transfer rate, moisture evaporation and drying at higher frying temperatures. This led to an initial acceleration of acrylamide formation in PBCs at higher temperatures, followed by its degradation resulting in low acrylamide content in final product. Based on sensory analysis and lowest acrylamide formation, the optimal conditions for frying of potato patties were: (i) MC: 66.53 ± 2.2% (ii) frying temperature: 165 °C (iii) frying time: 4 min.
Improving the Estimation and Predictions of Small Time Series Models
Authors: Liu-Evans Gareth
Published: April 2022

A new approach is developed for improving the point estimation and predictions of parametric time-series models. The method targets performance criteria such as estimation bias, root mean squared error, variance, or prediction error, and produces closed-form estimators focused towards these targets via a computational approximation method. This is done for an autoregression coefficient, for the mean reversion parameter in Vasicek and CIR diffusion models, for the binomial thinning parameter in integer-valued autoregressive (INAR) models, and for predictions from a CIR model. The success of the prediction targeting approach is shown in Monte Carlo simulations and in out-of-sample forecasting of the US Federal Funds rate.
Relational representations of algebraic lattices and their applications
Authors: Luo Shuzhen , Xu Xiaoquan
Published: April 2022

In this paper, we define the concepts of strongly regular relation, finitely strongly regular relation, and generalized finitely strongly regular relation, and get the relational representations of strongly algebraic, hyperalgebraic, and quasi-hyperalgebraic lattices. The main results are as follows: (1) a binary relation

ρ
:
X

⇀

Y

\rho :X\hspace{0.33em}\rightharpoonup \hspace{0.33em}Y

is strongly regular if and only if the complete lattice

(

Φ

ρ

(

X

)

,
⊆

)

\left({\Phi }_{\rho }\left(X),\subseteq )

is a strongly algebraic lattice; (2) a binary relation

ρ
:
X

⇀

Y

\rho :X\hspace{0.33em}\rightharpoonup \hspace{0.33em}Y

is finitely strongly regular if and only if

(

Φ

ρ

(

X

)

,
⊆

)

\left({\Phi }_{\rho }\left(X),\subseteq )

is a hyperalgebraic lattice if and only if the finite extension of

ρ

\rho

is strongly regular; and (3) a binary relation

ρ
:
X

⇀

Y

\rho :X\hspace{0.33em}\rightharpoonup \hspace{0.33em}Y

is generalized finitely strongly regular if and only if

(

Φ

ρ

(

X

)

,
⊆

)

\left({\Phi }_{\rho }\left(X),\subseteq )

is a quasi-hyperalgebraic lattice if and only if

(

Φ

ρ

(

X

)

,
⊆

)

\left({\Phi }_{\rho }\left(X),\subseteq )

equipped with the interval topology is a Priestley space.
Ultrasonography Knowledge and Practices among Obstetrics/Gynecology Practitioners; A Nationwide Survey in Jordan
Authors: Dar-Odeh Omayyah , Illa Miriam , Abdeljawad Samih , Abu-Hammad Osama , Abdeljawad Raghad , Abdeljawad Ruaa , Alkouz Farhan , Dar-Odeh Najla
Published: April 2022

Background: Ultrasonography is an indispensable tool in obstetric practice. This study aims to assess the ultrasonography-related knowledge, practices, and training aspects of Jordanian Obstetrics/Gynecology (OB/GYN) practitioners. This cross-sectional study was conducted in Jordan between September 2019 and January 2021 among OB/GYN medical practitioners. The study tool was based on a questionnaire composed of 25 closed-ended questions on demographic data and ultrasonography-related knowledge, practices, and training. Results: A total of 197 practitioners participated, and these were mostly female (N=126, 64.0%) and specialist (N=156, 79.2%). Most participants had sufficient knowledge on timing of detailed fetal scans (78.7%), nuchal translucency scans (89.3%) and aneuploidy markers (74%); these participants were mostly female (P=0.000, P= 0.04, respectively). On the other hand, insufficient knowledge was noted on other aspects, including the as-low-as-reasonably-achievable (ALARA) principle (25.9%) and meaning of the terms thermal index (25.4%) and mechanical index (23.9%), with no gender differences found. Only 45.2% of participants attended ultra-sonography workshops in the past 2 years, and the attendees were mainly female (P=0.016). Regression analysis indicated that attending training courses on ultrasonography within past 2 years and routine practice of requesting detailed fetal scans between 18 and 22 weeks were the only significant predictor variables for high knowledge scores (P=0.002 and < 0.001, respectively). Conclusions: Educational courses on ultrasound safety and practices are warranted for OB/GYN practitioners working in Jordan, especially for male practitioners. Revising undergraduate medical curricula and increasing the number of qualified specialists in maternal-fetal medicine may be necessary, particularly in aspects relating to the introduction of advanced ultrasound physics and practice.
Perception, knowledge and protective practices for surgical staff handling antineoplastic drugs during HIPEC and PIPAC
Authors: Benoist Hubert , Eveno Clarisse , Wilson Sarah , Vigneron Nicolas , Guilloit Jean-Marc , Morello Rémy , Simon Nicolas , Odou Pascal , Saint-Lorant Guillaume
Published: April 2022

Objectives

Two surgical techniques used for peritoneal metastasis involve a risk of exposure to antineoplastic drugs (ADs): hyperthermic intraperitoneal chemotherapy (HIPEC) and pressurized intraperitoneal aerosol chemotherapy (PIPAC). The objective of this study was to assess the differences in perception, training, and knowledge of the risks as well as in the protection practices and occupational exposures of all worker categories.

Methods

This descriptive study, led in two hospitals from two distant French regions, was performed through a face-to-face interview and assessed the perception, knowledge and handling practices of ADs by a questionnaire consisting of 52 questions.

Results

Fifty-one professionals participated in this survey. A total of 29.4% (n=15) professionals were afraid to handle ADs. Very few workers have been trained on handling ADs during initial training dedicated to all caregiver (5.9%; n=3). HIPEC is considered to involve a higher risk of exposure to ADs than PIPAC (81.6% (n=31) vs. 57.9% (n=22), respectively, p=0.022, agreement 65.8%). Protective equipment is considered to be less suitable for HIPEC than for PIPAC (29% (n=11) vs. 10.5% (n=4), respectively, p=0.016, agreement 81.6%). Concerning the potential AD contamination location, the participants identified a significant difference between these two practices. During HIPEC, 15.7% (n=6) of caregivers indicated that they had negative symptoms perceived in their practice vs. 2.6% (n=1) during PIPAC.

Conclusions

This study shows that perception, knowledge and protection practices are different between HIPEC and PIPAC. It also shows a difference between the worker categories. In view of the difficulties in making operating room staff available, the related training programmes must have an adapted format.
Metrological nanopositioning combined with two-photon direct laser writing
Authors: Mohr-Weidenfeller Laura , Hofmann Martin , Birli Oliver , Häcker Annika-Verena , Reinhardt Carsten , Manske Eberhard
Published: April 2022

The extension of nanopositioning and nanomeasuring machines (NPM-machines) to fabrication machines by using a femtosecond laser for the implementation of direct laser writing by means of two-photon absorption (2PA) is a promising approach for cross-scale metrological fabrication in the field of lithographic techniques [24]. To this end, a concept for integrating two-photon technology into an NPM machine was developed and implemented, followed by a characterization of the system and targeted investigations to provide evidence for the synergy of the two techniques. On this basis, a new approach to high-throughput micro- and nano-fabrication was developed and investigated, demonstrating new possibilities in cross-scale, high-precision manufacturing [6]. This mix-and-match approach is based on a combination of 2PA laser writing with field emission lithography to fabricate masters for subsequent nanoimprint lithography. Not only the advantages of the large positioning range of the NMM-1 could be highlighted, but also the advantages resulting from the highly accurate positioning. A systematic reduction of the distance between two adjacent lines resulted in a minimum photoresist width of less than30nm30\hspace{0.1667em}\text{nm}[16], which can be classified among the smallest distances between two laser-written lines described in the literature [4], [10], [20]. The center-to-center distance of the lines of about1.695µm1.695\hspace{0.1667em}\text{\textmu m}at a numerical aperture of 0.16 and a wavelength of 801 nm is only about56%56\hspace{0.1667em}\text{\%}of the Rayleigh diffraction limit extended for the two-photon process. Thus, for the first time, a resist width far below the diffraction limit could be realized with conventional two-photon laser writing in positive photoresist.
Call for the Federal Public Service to create an initiative to recruit and hire employees with Autism:
Authors: Au Kevin
Published: April 2022

Individuals with autism, a neurological condition impacting everyday activities, make up about 1.5-2.5% of the population. Compared to people with other disabilities, those with autism are disproportionately unemployed and underemployed. The Canadian federal government’s National Autism Strategy, consisting of research and funding to improve the health and well-being of those with autism, is led by the Public Health Authority of Canada (PHAC), but Employment and Social Development Canada (ESDC) plays an increasingly important role in supporting those on the spectrum through its programs and responsibility for implementing the Accessible Canada Act. ESDC, along with the Canada Revenue Agency (CRA) are two of the largest federal public sector employers. The writer, an autistic individual themself, advocates for ESDC and CRA to take the lead in creating a specialized hiring and retention process adapted to autistic individuals, as hiring and retaining autistic staff will likely produce a win-win result, helping the organizations become more diverse, higher performing and agile while reducing turnover and therefore staffing and training related costs.
A Study on the Influence of Natural Agents on the Absorption Properties of Cotton Fabrics – Part 1
Authors: Mohanraj Saravanan
Published: April 2022

India has a strong and proven track record for the manufacturing of many textile products, mainly cotton-based textile materials. This research aims to investigate herbal extract–treated cotton fabrics with a focus on investigating absorption properties. The treated fabric samples were analyzed for their static absorption (%), immersion time (seconds), surface water absorption (milliliters), and vertical wicking height (centimeters). To evaluate the developed herbal extract–treated fabric samples, they were compared with market established commercial silver agents, namely nanosilver. The finished cotton fabrics with specifications of 140 g/m2, plain weave with 15 % finished concentration, and untreated cotton fabrics had static water absorption of 318 and 328 %; immersion time of 1.66 and 1.65 s; surface water absorption of 17 and 18.1 mL; and vertical wicking heights of 3.2 and 4.9 cm, respectively. Water repellency properties had slightly changed for some of the treated fabrics such as higher areal density 220 and 240 g/m2 terry weave fabrics with ratings of ISO 50 adjacent to untreated fabric sample ratings of ISO 0. Water repellency results indicated that there was no characteristic change in water response property (i.e., water absorption) of herbal extract–treated samples. Ashwagandha, combined aloe vera: tulsi and combined banana peels: casein–treated cotton fabrics of 140 and 240 g/m2 with 10 % finish concentration showed better water absorption properties in comparison with the other herbal extract–treated samples.
On The Evaluation of Surface Roughness: X-Ray Tomography Reveals Hidden Details
Authors: du Plessis Anton , Tshibalanganda Muofhe , Yadroitsava Ina , Yadroitsev Igor
Published: April 2022

Additively manufactured surface roughness is an inherent aspect of the process that is known to influence especially the fatigue performance of additively manufactured parts. Postprocessing is often used to improve the surface, but this is not always possible with complex shaped parts such as biomimetic and topology optimized or lattice parts, for example, where surfaces may not be accessible. It is known that scanning strategies and process parameters play an important role in improving the surface condition. The laser spot size, laser power, scan speed, and layer thickness all play critical roles. Overhang angles also have an important influence, as well as the attachment of supports (and the removal process), and finally the size of the used powder. Surface roughness evaluation is typically done by standardized methods using tactile probe or noncontact profilometers. However, some surface features that may be critical to the fatigue properties are hidden by these methods. The use of X-ray tomography allows the evaluation of additional surface features such as undercuts, preexisting cracks, and open porosity, which are not measurable by these surface-only methods. X-ray tomography is limited in resolution capability; however, it can be used with great effect on coupon samples and mechanical test parts as part of optimization and qualification processes. This work makes use of a new simplified X-ray tomography roughness evaluation method to identify important features hidden by surface probe methods. The roughness is evaluated as a case study using traditional and X-ray tomography methods for a typical laser powder bed fusion process as a function of process parameters. This methodology can be used on coupon samples to optimize the process parameters for surface finish, enhancing the as-built surface condition for improved fatigue properties.
An Architecture for Deploying Convolutional Neural Network-Based Quality Systems for Use in Production Environments in Additive Manufacturing
Authors: Jones Oliver , Holloway Adam , Young Joe , Morrison Alex , Milne Katy , Rahman M. Mostafizur , Turner Nathanael
Published: April 2022

Recent advances in convolutional neural networks have shown promise for a wide range of engineering applications including production quality assessment. This has been enabled in part by the availability of open-source algorithms and techniques such as transfer learning. Despite these factors, deploying these algorithms in production environments remains a challenge. The research presents an architecture for the deployment of convolutional neural network algorithms for the quality assessment of additive manufacturing (AM) build processes. The first iteration of this architecture has been implemented in a preproduction powder bed fusion AM facility at the National Centre for Additive Manufacturing in the UK. By demonstrating the application of this architecture on data generated from in-process monitoring data, the study hopes to reduce barriers faced when taking machine learning models from a laboratory concept to a production facility. By reviewing the latency of predictions, the study highlights that the additional proposed architectures may be viable for processing live production data for detection and control of defects. Finally, the study proposes that AM build machine manufacturers could provide a service-oriented architecture to encourage the implementation of in-process correction strategies.
Production of Fully Dense AM Materials by Selective Thermoplastic Electrophotographic Process (STEP)
Authors: Mullen Brian D. , Pickering Jerry A.
Published: April 2022

The selective thermoplastic electrophotographic process (STEP) is a new additive manufacturing technology for printing thermoplastics into numerous part geometries. STEP combines the specificity and accuracy of electrophotographic printing with the thermal processability of plastics produced commercially today (polymers derived from acrylonitrile, butadiene, and styrene, or ABS; nylon(s); thermoplastic polyurethane [TPU], etc.). The STEP technology utilizes micrometer-sized powder as a raw material to print dense three-dimensional (3D) thermoplastic parts using heat and pressure. The parts are printed layer by layer, by transfusing hundreds to thousands of two-dimensional layers comprised of charged polymer particles. The result of the printing process is a 3D build containing both a thermoplastic part and a pH-responsive polymeric support. The support is selectively removed from the build in a postprocessing step, and the final parts are isolated. The final 3D printed parts are characterized, and the density of the final parts is essentially equivalent to commercially injection-molded thermoplastics. Scanning electron microscopy analysis is utilized to diligently characterize the part surfaces and cross-sectional areas of the final thermoplastic parts.
Research on the Yield and Fracture Behavior of Microporous AlSi10Mg Generated by Selective Laser Melting in Local Stress Concentrations Caused by Different Notches
Authors: Hankele Martin , Werz Martin , Weihe Stefan
Published: April 2022

During the manufacturing of components by selective laser melting, voids of different sizes can occur due to the complex and transient interaction of the laser beam, powder and process atmosphere as well as the resulting dynamic process in the melt pool and the work piece material, respectively. These process-related discontinuities have an influence on the yield and fracture behavior in local stress concentrations caused by different notches. Therefore, the influence of local stress concentrations caused by different notches on the fracture and yield behavior is studied for different heat treatment states. The results have shown that the examined heat-treatment conditions for the considered notches do not show “notch weakening.”
Comparative Metrological Characterization of Ti-6Al-4V Lattice Structures Produced by Laser-Powder Bed Fusion
Authors: Dallago Michele , Zanini Filippo , Carmignato Simone , Zappini Gianluca , Luchin Valerio , Benedetti Matteo
Published: April 2022

Additive manufacturing technologies, such as laser-powder bed fusion, enable the fabrication of metallic lattices with a wide range of topologies and size scales. The possibility of manufacturing these materials into complex shapes with good property-to-weight ratios stimulates a growing interest in several industrial sectors. Nevertheless, such small-scale structures often suffer from various morphological defects that can lead to a marked deviation from the nominal geometry and, consequently, impact the mechanical, transport, and thermal properties. An accurate characterization of the lattice geometry and dimensions is thus of paramount importance for a reliable prediction of the lattice properties. The most adopted characterization techniques for as-built lattices are X-ray computed tomography (CT), scanning electron microscopy, and optical microscopy. Contrary to the other methods, CT provides full three-dimensional data including inaccessible geometries and features, in a nondestructive way, but it requires expensive equipment and considerable expertise. Scanning electron microscopy and optical microscopy can be faster and less expensive but are nondestructive only when limited to the outer surface of the lattice. Instead, when combined with metallographic analysis, they require destructive, careful, and time-consuming specimen preparation, and the analysis is confined to selected sections. In this work, the three aforementioned techniques are used to characterize laser-powder bed fusion Ti-6Al-4V regular cubic lattices of a 4-mm unit cell size and circular cross-section struts 0.760 mm in diameter. The results of strut cross-section measurements obtained with the different techniques are compared and the effect of the size of the analysis domain on the compatibility of the results is investigated by comparing lattice subvolumes of different sizes. Via a thorough statistical analysis, it is shown that CT and metallographic characterizations lead to similar results, while the microscope imaging method can overestimate the strut thickness compared to the other methods.
Selection of Printing Parameters of a Thermoplastic Elastomer Processed through Material Extrusion
Authors: Adrover-Monserrat Bàrbara , Llumà Jordi , Jerez-Mesa Ramón , Travieso-Rodriguez J. Antonio
Published: April 2022

Three-dimensional printing technologies are growing additive manufacturing techniques in both the industrial and private sectors. Due to the large number of possible applications for parts built through this technique and the higher standards required for the final products, the need to study new materials increases as a means of delivering innovation into the sector. This paper aims to characterize a polyamide thermoplastic elastomer (polyether block amide) used in the material extrusion technique. Polyether block amide is a material that, among others, could have applications in the field of biomechanics thanks to the combination of high flexibility and relatively high strength. In order to study the behavior of the material after its processing, two controlled printing parameters (layer height and infill density) are related with the resulting mechanical properties measured through tensile testing. A factorial design of experiments is applied to conduct the experimental executing. Once all specimens are printed and tested, an analysis of variance test is processed to analyze the statistical influence of the considered parameters on the material behavior. Consequently, the recommended values for three-dimensional printing of the material are determined in order to obtain the best tensile mechanical properties. The results obtained demonstrate that the Young's modulus can be increased by using a fill density of 75% and a layer height of 0.3 mm. However, regarding the yield strength, there is not a big difference between 50% and 75% infill between layer heights of 0.25 and 0.3 mm.
Rapid biogenic fabrication of silver nanoparticles using Ziziphus nummularia under optimised conditions and evaluation of their antimicrobial synergy
Authors:   Research Scholar, Faculty of Pharmacy, Rajasthan University of Health Sciences, Jaipur 302033, Rajasthan, India, Kumar V. , Lakhawat S. S. ,   Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, Rajasthan India, Kumar S. ,   Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, Rajasthan India, Chaudhary A. A. ,   Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSUI), Riyadh, Saudi Arabia, Rudayni H. A. ,   Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSUI), Riyadh, Saudi Arabia, Al-Zahrani M. ,   Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSUI), Riyadh, Saudi Arabia, Gilhotra U. K. ,   Department of Pharmacology, G.D.Memorial College of Pharmacy, Jodhpur 342005, Rajasthan, India
Published: April 2022

Nanotechnology deals with the Nanoparticles having a size of 1-100 nm in one dimension used significantly concerning medical chemistry, atomic physics, and all other known fields. These particles can be prepared easily by different physical, chemical and biological approaches. But the biological approach is the most emerging approach of preparation because this method is easier than the other methods, eco-friendly and less time consuming. In this study green synthesis of silver nanoparticles (AgNPs) of Ziziphus nummularia (ZN) was done using the magnetic stirrer method. These AgNPs were characterized by UV-vis Spectroscopy, FTIR and SEM technique and the optimization was done by varying the root extract volume, silver nitrate concentrations, pH and temperature. It was observed that ZN extract can reduce the silver ions in to AgNPs with in 30 min of reaction time. The surface plasmon resonance peak observed near 430 nm, confirmed the reduction of Ag+ to Ag0 . Maximum absorbance peak 430 nm was observed with 2mM AgNO3 solution with standard condition of 9pH and 70°C temp. at magnetic stirrer followed by 42 hrs incubation during the optimization of stable AgNPs. SEM images clearly shows that synthesized AgNPs are in spherical shape with size range 20-50 nm. FTIR clearly indicating the presence of capping and reducing agents around the AgNPs synthesised from crude extract of ZN. The biosynthesized AgNPs exhibited significant antimicrobial activity against pathogenic Staphylococcus aureus, Enterococcus faecalis (a Gram-positive bacterium), Pseudomonas aeruginosa and Escherichia coli (a gram negative bacterium) and Aspergillus niger (plant pathogenic fungal strain), Candida albicans (human pathogenic fungal strain). This novel approach of bionanotechnology can be taken up by the researcher in near future to develop the effective bionaomedicine, biopesticides, nanofood composites etc.
Fabrication and characterization of highly efficient dye-sensitized solar cells with composited dyes
Authors:   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Radloff G. H. C. , Naba F. M. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Ocran-Sarsah D. B. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Bennett M. E. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Sterzinger K. M. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Armstrong A. T. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Layne O. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374, Dawadi M. B. ,   Department of Chemistry and Biochemistry, Earlham College, 801 National Rd W, Richmond, IN, 47374
Published: April 2022

As a representative of the next-generation solar cells, dye-sensitized solar cells (DSSCs) offer the efficient and ease of implementation of new technology for future energy supply. Herein, four commercially available dyes including, curcumin (C), betanin (B), crystal violet (CV), and methylene blue (MB), and their compositions were used as sensitizers for fabrication of titanium oxide photo-anode based DSSCs. All dyes were fully characterized using absorption and emission spectroscopy. Both DFT and TDDFT studies were also carried out to probe the electronic structure of these dyes. The power conversion efficiencies of each DSSCs prepared using the individual and composited dyes were measured and compared. Particularly, this is the first study to combine four different dyes for DSSCs, leading to a remarkable increase of power conversion efficiency. The DSSCs with combined curcumin, betanin, crystal violet, and methylene blue (in ratio 1:1:1:1 respectively) in ethanol exhibited the highest power conversion efficiency of 3.63%.
Fabrication and characterization of zinc oxide nanoparticles for photocatalytic application
Authors:   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan, Haq S. , Ali M. B. ,   Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia, Mezni A. ,   Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia, Hedfi A. ,   Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia, Rehman W. ,   Department of Chemistry, Hazara University, Mansehra, Pakistan, Sarwar Gh. ,   Department of Chemistry, Hazara University, Mansehra, Pakistan, Zain-ulAbdin  ,   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan, Din S. U. ,   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan, Rehman F. U. ,   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan, Abbasi S. A. ,   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan, Lone A. L. ,   Department of Chemistry, University of Azad Jammu and Kashmir, Muzffarabad 13100, Pakistan
Published: April 2022

The physicochemical characteristics of Zinc nanoparticles (ZnO NPs) were investigated using various techniques after they were produced using the sol gel process. The crystalline structure, surface morphology, optical property, elemental and chemical composition of the samples have been studied by X-diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance (DRS),energy dispersive X-ray (EDX) and fourier transform infrared (FTIR) spectroscopies respectively. The synthesis of extremely pure, well crystalline and photo-active ZnO NPs with mixed surface morphology was obtained. Afterward, the photocatalytic activity of ZnO NPs were evaluated against Rhodamine 6G (RH-6G) in aqueous medium.
Stress and depression in university health students
Authors: Bresolin Julia Zancan , Dalmolin Graziele de Lima , Vasconcellos Silvio José Lemos , Andolhe Rafaela , Morais Bruna Xavier , Lanes Taís Carpes
Published: April 2022

Objective: to analyze the association between stress and depression in university health students. Methods: cross-sectional study conducted with 792 university health students. The research instrument consisted of characterization of the students, Beck Depression Inventory version II and the Perceived Stress Scale. Absolute and relative frequency analysis, mean, standard deviation, median, interquartile range, and analytical statistics were used. Results: an association between depression and stress was observed (p<0.001) as well as a strong correlation between them (r=0.731; p<0.001). In high level of stress 9.5% of the students were found and in moderate to severe intensity of common symptoms of depression, 23.6% of them. Conclusion: a difference was noticed in the averages between the levels of depression and stress, in that the higher the level of depression, the higher the average stress. Contributions to practice: stress is related to depression in university health students, who, after graduation, may enter the labor market already sick, which brings implications for interpersonal relationships, worker health and patient safety. This enables higher education institutions to reflect on the organization of practices and intervention policies for the reduction of stress and depression among students.
Association between sociodemographic characteristics and adherence to early detection of breast cancer
Authors: Oliveira Rosy Denyse Pinheiro de , Ferreira Iarlla Silva , Castro Régia Christina Moura Barbosa , Fernandes Ana Fátima Carvalho
Published: April 2022

Objective: to verify the association between sociodemographic characteristics and the performance of actions for early detection of breast cancer. Methods: a cross-sectional study was carried out in six primary health care units, with 400 women considered a target population for actions for early detection of breast cancer. The Chi-square test of independence (2x2) was used for inferential analysis. Results: most women were between 60 and 64 years old, married, had low education and lacked an occupation or health insurance. A significant association was found between marital status and the interval between requesting and performing a mammogram (X2(1) = 208.185, p<0.001, Phi-coefficient= 0.902; Confidence Interval: 0.0308–0.0928). Women without a partner had a 0.95 times higher prevalence of having a mammogram. Conclusion: there was an association between the sociodemographic variable marital status and the performance of mammography in a shorter period, and not having a partner was a protective factor. Contributions to practice: the elucidation of factors related to the performance of actions for breast cancer screening can signal patients who need greater vigilance regarding the presence of signs and symptoms suggestive of breast cancer.
Podvodno nalazište Sveti Juraj - Lisac i proizvodnja soli krajem brončanog doba
Authors: Domines Peter Pio , Parica Mate
Published: April 2022

U vizuri mjesta Svetog Jurja smještenog u podvelebitskom primorju oko sedam kilometara južno od Senja dominira manji otočić Lisac. Blizina kopna i relativno plitka dubina tjesnaca privukla je pozornost istraživača i trasirala put pretpostavkama o povezanosti otoka s kopnom tijekom prošlosti. U radu se predstavljaju rezultati pregleda podmorja kojim je potvrđeno postojanje arheoloških potencijala u podmorju tjesnaca. Lokalitet uključuje tragove maritimnih konstrukcija u obliku komunikacijskog nasipa i umjetno stvorenog platoa, a analiza keramičke građe pokazuje da su se znatne prostorne aktivnosti u maritimnom krajoliku Lisca vjerojatno dogodile tijekom kasnog brončanog doba. U obradi prikupljenog materijala najveća pozornost pridana je nalazima briketaža. Pod tim pojmom podrazumijeva se repertoar izrađevina od pečene zemlje – potpornih stupića i recipijenata koji su služili u prapovijesnoj produkciji soli prisilnim isušivanjem morske vode, a brojnost ulomaka takvih specifičnih predmeta na lokalitetu snažna je potvrda ubikacije proizvodne lokacije. U kontekstu toga raspravlja se o karakteru lokaliteta, korelaciji između prostornih karakteristika položaja te zahtjeva, potreba i tehnoloških aspekata produkcije soli briketažom, s osvrtom na implikacije koje je ta djelatnost mogla imati unutar socioekonomskih okvira na mikroregionalnoj razini.
Novi trendovi kamping turizma - glamping i obiteljski kampovi
Authors: Eremić Gordana
Published: April 2022

Rad prikazuje nove trendove u kamping turizmu Hrvatske i svijeta. Nakon povijesnog pregleda razvoja kamping i glamping turizma, naglasak je na stanju u kamping turizmu Hrvatske. Analizom postojeće znanstvene i stručne literature iznosi se pregled dosadašnjih istraživanja kamping i glamping turizma te problemi s kojima se istraživači kamping turizma susreću. U završnom dijelu rada naglasak je na predviđanjima znanstvenika o budućnosti kamping turizma. Metode korištene kroz rad su: metoda analize i sinteze, statistička metoda, te metoda kompilacije.

Kamping turizam danas zbog zrelosti ponude na Mediteranu doživljava značajne promjene, poput pojave glampinga kao luksuznog i cjenovno skupljeg oblika. Hrvatski kamping turizam, unatoč značajnom udjelu kampova u ukupnoj strukturi smještajnih kapaciteta, bilježi manjak istraživanja i autora koji se bave novim trendovima kamping turizma te obiteljima, ali i slabu iskorištenost od strane domicilnih turista. Istovremeno, Istarska županija bilježi porast broja kampista kao i potražnje za glampingom.
Pueblos indígenas en Lima: la ciudad como maloca
Authors: Solís Fonseca Gustavo
Published: April 2022

Se hace un recuento de la presencia indígena en la ciudad de Lima, señalando a aquellos que de alguna manera asumen su particularidad étnica en el contexto de la ciudad. Se muestra que Lima es una ciudad étnicamente diversa, pues en ella viven aimaras, quechuas, pobladores de varias etnias amazónicas, y varios grupos de ascendencia no americana que desarrollan algún nivel de vida comunitaria que se evidencia de varias formas. Los datos recogen la presencia de ashaninkas (en Huaycán), de shipibos (en Cantagallo), de gente awajún (en Ventanilla) y matsiguengas (en Puente Piedra) que viven más o menos agrupados, en cierta medida como comunidades indígenas urbanas. Se hace notar que la ciudad es un “melting pote” de lo indígena para generar no indígenas, esto es, ciudadanos criollos o asimilados a la sociedad mayor culturalmente occidental. ¿Cuánto se aleja cada cual concretamente de su indianidad?
Arterial Stiffness in Children with Chronic Kidney Disease: Prevalence, Risk Factors and Functional Consequences
Authors:   , Ažukaitis Karolis
Published: April 2022

Chronic kidney disease is associated with significant alterations of the arterial wall structure even in young children that may result in increased arterial stiffness. Adult studies have established a clear link between chronic kidney disease, arterial stiffness and target organ damage but the data in pediatric population was equivocal and relevance of arterial stiffness remained unclear. The aim of this thesis is to evaluate the prevalence and risk factors of arterial stiffness measured by pulse wave velocity and its functional consequences on left ventricular geometry and chronic kidney disease progression in children with pre-dialysis stage 3-5 chronic kidney disease. A total of 667 children from the prospective, multicenter Cardiovascular Comorbidity in Children with Chronic Kidney Disease Study were followed for a median of 1.7 years. Pulse wave velocity was increased in 19.2% of children at baseline and did not change significantly over the follow-up. Higher pulse wave velocity associated with younger age, female sex, lower height, tubulointerstitial kidney diseases, higher blood pressure, lower ferritin levels, higher proteinuria, higher low-density lipoprotein cholesterol and lower vitamin D levels. Higher pulse wave velocity associated with left ventricular concentric remodelling but not chronic kidney disease progression. Collectively, these findings provide strong rationale for routine pulse wave velocity in children with advanced chronic kidney disease.
Long-term factors and trends in the development of the fuel and energy complex of Ukraine
Authors:   Institute of Industrial Economics of NAS of Ukraine, Cherevatskyi Danylo Yuriovich
Published: April 2022

The objective of the paper is to define long-term trends and factors in the development of the world energy industry and their refraction to Ukrainian realities. The article consists of an introduction, three sections, namely: the main trends in the development of the global fuel and energy complex, analysis of the current state, long-term trends and factors in the development of the national fuel and energy complex of Ukraine. Conclusions end the paper. As for the world energy sector it is shown that its modern changes – Grand Transit – are due to the ideology of sustainable development and have the character of an extraordinary change in the technocenosis, the transition from the use of fossil fuels to energy from renewable sources, mainly – wind and photovoltaic nature. Along with the major tendencies of the Great Transition, there is also the trilemization and politicization of energy sector. Trilemization components are: Energy Security, Energy Equity and Environmental Sustainability. There are three scenarios for the development of the global energy – Unfinished Symphony, Modern Jazz and Hardrock, distinguished by the degree of greening and the availability of energy resources. Political motives are becoming more and more significant at all levels – from global to local. Major players are lobbying their interests, there is an activity of structures from the field of nuclear energy, powerful fuel companies, owners of gas transportation and gas distribution infrastructure. In Ukraine, transformation processes are taking place against the backdrop of low environmental acceptability and high depreciation of fuel and energy sector facilities and infrastructure, political and economic instability. The requirements of decarbonization create challenges to the very existence of coal energy, which is the main component of the energy generating fund of the country and the regions, where mines are located. Options for the development of hydrogen/ammonia energy in the form of vertically integrated energy-chemical systems with the nuclear power plants and reformed coal-fired thermal power plants are considered as promising; energy diversification of mining regions; the creation of virtual power plants based on hydrodynamic water heating installations.
Money supply impact on investment and GDP: statistical analysis
Authors:   i-Klass Center LLC, Lypnytskyi Denys , Lypnytska Polina ,   Up2Date Learn Online Courses
Published: April 2022

The question of how the changes in money supply influence investment and GDP have been studied intensively in recent history. However, not all aspects of this impact are sufficiently researched. In particular, the “new normality” (that has evolved recently) limits the use of well-known classical concepts and models in monetary policy, especially for emerging economies to which Ukraine belongs. Thus, the subject of this study was to assess the relationship between monetary aggregates, investment, and GDP by the world economic data analysis using mathematical statistics. As the information base for the study, the World Bank official statistics were taken (including broad money, gross capital formation, and GDP). More than 71% of all investigated countries showed a significant correlation between M3 and gross investment. The issue of how the strength of this relationship depends on the level of socio-economic development was investigated. Classification of countries was carried out using the “nearest neighbors” method in a two-dimensional feature space, namely, per capita income and correlation tightness. The analysis showed that 79% of all countries fall into the class with a proven high correlation. Moreover, their level of wealth and development was irrelevant. A cluster analysis of countries was fulfilled in the chosen feature space using the “mean shift” method. With the help of this method, all countries have been distributed into five clusters with different socio-economic conditions and an accuracy of 91%. Among them, there was a group of countries highly sensitive to change in monetization, up to extremely negative economic impacts. The study helped to conclude that, regardless of economic development, GDP benefits from an increase in the money supply. Although this factor is considered necessary, it is nevertheless not sufficient for economic growth, especially in the time of the fourth industrial revolution, when the government has to play a more active and complex role in accelerating national technological development.
Conceptual provisions of the mechanism of reflexive control of consumer behavior in the marketing activities of enterprises
Authors:   Institute of Industrial Economics of the NAS of Ukraine, Shumilo Yana
Published: April 2022

Methodological approaches are studied and conceptual provisions of the mechanism of reflective management of consumer behavior in marketing activities of enterprises are proposed, which involve identifying reflective components of consumer behavior in the decision-making process on product acquisition, formation and implementation of reflective control influences. The method of identifying reflective components of consumer behavior in marketing activities of enterprises, in particular – the factors influencing the likelihood of consumer inheritance in the decision to purchase products, based on the conclusions of neurobiological researches by V. Klyucharev and improved method of multifactorial researches by R. Cattell. A distinctive feature of the improved R. Cattell’s method is the interpretation of questionnaires to determine the reflective components of consumer behavior in the decision to purchase a product, including the level of emotional instability, conformism, introversion, awareness and evaluation of decision-making time. reflexive control influences to increase product sales. The formalization of key reflexive components is carried out and the sequence of stages of realization of the mechanism of reflexive management of behavior of consumers in marketing activity of the enterprises is resulted. To implement the conceptual provisions of the mechanism of reflective management of consumer behavior in marketing activities of a company proposed to use a modified model "advertising of goods" by A. Chkhartishvili aimed at profit maximization, which, unlike existing, uses reflective components of consumer behavior in the purchase decision products, in particular – the tendency of consumers to imitate. The application of the model will increase the efficiency and validity of management decisions to manage consumer behavior to enhance the competitive advantages of the enterprise.
Exploring learners’ agency as a co-regulated construction of autonomous practices
Authors: Ochoa Alpala Dayra Piedad
Published: April 2022

This study uses the frame of sociocultural theory to explore the idea that agency is at the root of autonomy and autonomous learning, despite recent trends that instead emphasize self-direction and independence. Agency is here conceptualized in light of co-regulation in a group of 12 university learners who were involved in practices of other-regulation, co-regulation and input-regulation, with their learners framed as agents who both shape and are shaped by sociocultural contexts. The findings reveal the link between agency and the co-regulated practices that emerge within the learning environment, as well as the different manifestations that learners’ agency can take due to their backgrounds.
Rights to Speak
Authors: Baynham Mike
Published: April 2022

Vignette

Around the time I was preparing to write this commentary, I attended a poetry event in Glasgow celebrating Palestinian poetry. Due to unforeseen circumstances I was asked to step in and read the English translations, unprepared, in place of a distinguished Scottish poet/translator, alongside a Palestinian poet, Iyad Hayatleh, who read Arabic originals from an anthology followed by his own poems in the language and then a short story he had written in English. The anthology contained poems from a range of Palestinian poets with translations into Standard English with occasional Scots English expressions (e.g. ‘two wee hands’) and into Scots and Gaelic and Shetlandic. All the translations I in fact read were into this occasionally Scots-inflected Standard English.

Iyad read from the anthology in the first part of the reading, and I read the English translations in my southern English accent. So far, so conventional. In the second part of the reading, however, it turned out that Iyad's poems in Arabic were to be followed by his own translations of them into English. At this point it seemed to me rather odd that I should be reading Iyad's own translations. So when he had finished reading the first poem and handed the manuscript over to me to read, I suggested to him that he should read the English (there having been no time before the reading to plan this). At this point, however, he indicated that he would rather not, so I carried on reading the English. After this Iyad went on to read his short story, which is an account of his experience of seeking asylum, his reading in English creating a very powerful effect in the room.