bluuebunny/crossref_metadata_2025 huggingface dataset:
Contaminants of emerging concern in the Maumee River and their effects on freshwater mussel physiology
Authors: Roznere Ieva , An Viktoriya , Robinson Timothy , Banda Jo Ann , Watters G. Thomas
Published: February 2023

Contaminants of emerging concern pose a serious hazard to aquatic wildlife, especially freshwater mussels. The growing number of contaminants in aquatic systems requires scientists and managers to prioritize contaminants that are most likely to elicit a biological response for further monitoring and toxicological testing. The objectives of this study were to identify a sub-category of contaminants most likely to affectPyganodon grandisand to describe alterations in metabolites and gene expression between various sites. Mussels were deployed in cages for two weeks at four sites along the Maumee River Basin, Ohio, USA. Water samples were analyzed for the presence of 220 contaminants. Hemolymph samples were collected for metabolomics and analyzed using mass spectrometry. Contaminants that significantly covaried with metabolites were identified using partial least-squares (PLS) regression. Tissue samples were collected for transcriptomics, RNA was sequenced using an Illumina HiSeq 2500, and differential expression analysis was performed on assembled transcripts. Of the 220 targeted contaminants, 69 were detected in at least one water sample. Of the 186 metabolites detected in mussel hemolymph, 43 showed significant differences between the four sites. The PLS model identified 44 contaminants that significantly covaried with changes in metabolites. A total of 296 transcripts were differentially expressed between two or more sites, 107 received BLAST hits, and 52 were annotated and assigned to one or more Gene Ontology domains. Our analyses reveal the contaminants that significantly covaried with changes in metabolites and are most likely to negatively impact freshwater mussel health and contribute to ongoing population declines in this group of highly endangered animals. Our integration of “omics” technologies provides a broad and in-depth assessment of the short-term effects of contaminants on organismal physiology. Our findings highlight which contaminants are most likely to be causing these changes and should be prioritized for more extensive toxicological testing.
Can grammatical morphemes be taught? Evidence of gestures influencing second language procedural learning in middle childhood
Authors: Janzen Ulbricht Natasha
Published: February 2023

What kind of practice makes perfect when children learn to use grammatical morphemes in a second language? Gestures are communicative hand and arm movements which teachers naturally employ as a teaching tool in the classroom. Gesture theory has proposed that gestures package information and previous studies suggest their value for teaching specific items, such as words, as well as abstract systems, such as language. There is broad consensus that implicit learning mechanisms in children are more developed than explicit ones and that everyday use of grammar is implicit and entails developing implicit knowledge. However, while many learners have difficulties acquiring new morpho-syntactic structures, such as the plural{-s} and 3rd person possessive {-s} in English, research on gesture and syntax in middle childhood remains rare. The present study (N = 19) was conducted to better understand if gestures which embody grammatical morphemes during instruction can contribute to procedural learning. Using a novel task, the gesture speeded fragment completion task, our behavioral results show a decrease in mean response times after instruction in the test condition utilizing syntactically specific gestures. This increase in procedural learning suggests that learners in this age group can benefit from embodied instruction in the classroom which visually differentiates between grammatical morphemes which differ in meaning but sound the same.
Factors influencing LGBTQ+ disclosure decision-making by Canadian health professionals: A qualitative study
Authors: Beagan Brenda L. , Sibbald Kaitlin R. , Bizzeth Stephanie R. , Pride Tara M.
Published: February 2023

Disclosure of LGBTQ+ identities at work may reap benefits, but may also exacerbate harms. Faced with ambiguous outcomes, people engage in complex concealment/disclosure decision-making. For health professionals, in contexts of pervasive heteronormativity where disclosure to patients/clients is deemed to violate professional boundaries, stakes are high. This qualitative study with 13 LGBTQ+ health professionals across Canada used semi-structured interviews to explore factors affecting disclosure decision-making, particularly attending to power structures at multiple levels. Most participants engaged in constant risk-benefit assessment, disclosing strategically to colleagues, rarely to clients/patients. At the individual level they were affected by degree of LGBTQ+ visibility. At the institutional level they were affected by the culture of particular professional fields and practice settings, including type of care and type of patients/clients, as well as colleague interactions. Professional power–held by them, and held by others over them–directly affected disclosures. Finally, intersections of queer identities with other privileged or marginalized identities complicated disclosures. Power relations in the health professions shape LGBTQ+ identity disclosures in complex ways, with unpredictable outcomes. Concepts of professionalism are infused with heteronormativity, serving to regulate the gender and sexual identity expression of queer professionals. Disrupting heteronormativity is essential to forge more open professional cultures.
A framework for modelling emergent sediment loss in the Ombrone River Basin, central Italy
Authors: Diodato Nazzareno , Ljungqvist Fredrik Charpentier , Fiorillo Francesco , Bellocchi Gianni
Published: February 2023

Water can represent a hazard causing soil erosion and it is essential to anticipate the potential environmental impacts of sustained rainwater energy to achieve sustainability. Here, we present the modelling of the erosive force of water for the production of soil sediment in a Mediterranean basin of central Italy (Ombrone River Basin, ORB). A point of departure is the historical recognition of the environmental factors causing sediments loss (SL) by water. A semi-empirical framework was then proposed for the upscaling of SL based on the Foster-Thornes approach (EUSEM: Environmental Upscaling Sediment Erosion Model) in order to give an insight into annual sediment losses (SL) over the period 1949–1977 (calibration) and over a longer time-frame (1942–2020: reconstruction). Two change-points were detected: 1967 and 1986. During this period, SL was affected by a sharp decrease from 625 Mg km-2yr-1, before the first change-point (when SL was only occasionally below the tolerable soil loss threshold of 150 Mg km-2yr-1), to 233 Mg km-2yr-1, during the transition phase 1967–1985 (mostly above the warning treshold of 140 Mg km-2yr-1). This decrease coincided with an enhancing of vegetation throughout the basin due to an ongoing afforestation process. After this period, a resurgence of climatic forcing led to a further, but more contained, increase in SL, from 1996 onwards. This case-study illustrates the application and results that can be obtained with the framework for the outcome of environmental change due to sediment losses in a Mediterranean fluvial basin. Limitations and perspectives of this approach are given as conclusion.
Adipokinesand Ghrelin Rolein Regulation of Ovarian Function in Obesity
Authors: Abdusalamova A. I. , Bettikher O. A. , Rudenko K. A. , Belyaeva O. A. , Neimark A. E. , Zazerskaya I. E.
Published: February 2023

There is a great worldwide trend in the incidence of obesity, which is increasing with each passing year among all populations, including women of reproductive age. Given the impressive list of diseases associated with obesity, as well as the negative inverse correlation of the severity of obesity with fertility, this problem is global not only in the social sphere, but it also becomes demographically significant.

Along with other pathogenetic mechanisms leading to persistent anovulation, an imbalance in adipokine production by adipose tissue can also serve as one of the important links in the development of reproductive dysfunction. Despite apparent interest in this topic, a large number of previously discovered adipokines are still not studied. Among adipokines, the effects of adiponectin and leptin on reproductive function are best known. Alterations in adiponectin and leptin levels can affect hypothalamic-pituitary-gonadal signaling, folliculogenesis, oogenesis and steroidogenesis. In addition, leptin is involved in the initiation of puberty, regulation of the menstrual cycle, and changes the balance between proliferation and apoptosis in ovarian cells. The leading causes of reduced fertility, infertility, and IVF failure in obese patients are mechanisms that promote the formation of chronic anovulation, delay the maturation of oocytes, reduce their quality, and/or lead to changes in endometrial susceptibility. These effects can be caused by an imbalance in the concentrations of leptin and adiponectin (leptin excess and adiponectin deficiency), lead to endometrial dysfunction, disruption of implantation and early embryogenesis. These changes, in turn, can affect just as the likelihood of spontaneous conception, so the effectiveness of assisted reproductive technologies and subsequent gestation.

Thus, the study of potential pathogenetic pathways of fertility regulation in obesity, one of which is the subject of this review, is an important area for further study.
Nutrition and the state of the intestinal microflora in the formation of the metabolic syndrome
Authors: Patrakeeva V. P. , Shtaborov V. A.
Published: February 2023

The literature review presents the results of modern studies of the relationship between diet and intestinal microbiota in the regulation of metabolic disorders. Metabolic syndrome, which is a symptom complex that combines abdominal obesity, insulin resistance, hyperglycemia, dyslipidemia and arterial hypertension, remains an important problem, being a risk factor for cardiovascular, neurodegenerative, oncological diseases and the development of type 2 diabetes mellitus. Although the pathogenesis of the metabolic syndrome has not yet been fully elucidated, it is known that visceral obesity and its associated complications, such as dyslipidemia and increased levels of pro-inflammatory cytokines, play a central role. The article presents data on the impact of the consumption of certain food products, the inclusion of plant biologically active substances (flavonoids, polyphenols, etc.) in the diet, as well as the use of elimination diets with the exclusion of carbohydrates or fats from the diet, on reducing the risk of cardiovascular accidents, levels of fasting glucose, total cholesterol, LDL, triglycerides, C-reactive protein, leptin, insulin, reduction in body weight and waist circumference, reduction in the level of circulating endotoxins and changes in the activity of immunocompetent cells. Data are presented on the possible influence of the intestinal microbiota in maintaining inflammation and the formation of degenerative changes in the body. The role of changes in the ratio of the levels of pathogenic microflora, bifidobacteria and lactobacilli in the formation of a pathological condition is shown.
Power supply reactive power factor control as a function of consumer power and losses in transformers
Authors: Kotenev Viktor I. , Kotenev Alexander V. , Stulov Alexander D.
Published: February 2023

The system of automatic control of the reactive power factor of the enterprise's power supply system is considered, in which one part of the transformer substations is equipped with adjustable capacitor units, and the second is not. Its advantage in comparison with the power factor control system is shown, firstly, lower requirements for its error and, secondly, the calculation of the consumer with the supplier for electricity is made taking into account the ratio of reactive energy to active energy. An estimate of the error of regulation of the reactive power factor on the higher voltage side of the transformers of the main step-down substation, where settlement meters are installed, is given, with stabilization of the reactive power factor on the low voltage side of these transformers. The synthesis of the system of automatic control of the reactive power factor, built as a function of the power of consumers and power losses in transformers, and the estimation of its error are considered. The proposed control system is intended for power supply systems with a combined load, the use of which will allow the consumer to avoid penalty coefficients to the tariff for active electricity, and ultimately reduce losses in the transmission of electricity and increase the transmission capacity of the electrical network.
Simulation models based on Petri nets for the analysis of maintenance and repair processes of complex technical systems
Authors: Orlov Sergey P. , Susarev Sergey V.
Published: February 2023

The presented review analyzes the approaches and methods of using simulation models in the maintenance and repair organization of the complex technical objects and systems. The development of the concept of "Industry 4.0" and the Internet of things involves the transition from periodic and preventive maintenance to predictive maintenance based on the study of processes during the object operation. It is shown that system models based on Petri nets are convenient for describing and analyzing technological processes and equipment maintenance. The effectiveness of timed stochastic colored Petri nets for virtual tests in the design of maintenance and repair procedures in complex systems is revealed. The use of hierarchical Petri nets allows building complex models that describe interrelated processes. A general model based on a hierarchical network is proposed to study the processes of deterioration and degradation of the technical object aggregates and elements and to form a predictive maintenance strategy. The model includes a Gantt chart of production tasks, a set of active and reserve units, maintenance and repair modules. The examples of simulation models on Petri nets for various technical systems are considered. Solutions for flexible production systems, railway bridges, offshore wind turbines, an aircraft fleet, a group of robotic vehicles, and a complex of computer equipment of an enterprise are given. The models of various maintenance strategies are considered and the generality of the models based on hierarchical Petri nets is shown. The article formulates methodological principles for constructing hierarchical networks to simulate the operation and maintenance of technical systems. The article analyzes known software tools for the implementation of timed stochastic colored Petri nets. The summary concludes that the use of simulation models on Petri nets is promising for organizing maintenance and repair of complex technical objects and systems.
Efficiency coefficients of the energy storage device in the contact network of the city electric transport
Authors: Katsay Alexander V. , Shevlyugin Maxim V.
Published: February 2023

The efficiency of stationary and on-board energy storage devices in the contact network of mountain electric transport (tram, metro) is considered. The efficiency coefficients of storage devices are derived depending on the completeness of consideration of storage systems and methods of their application. In accordance with the established formulas for calculating different types of efficiency, the operation indicators of domestic energy storage devices of various types on mountain electric transport are analyzed. It has been established that, other things being equal, stationary energy storage devices are more efficient than those of the on-board version.
Satellite vibration effects on communication quality of OISN system
Authors: Madhag Aqeel , Dhaam Haidar Zaeer
Published: February 2023

Over space optical communications are considered as the critical technology for high-bandwidth, high-speed, and large-capacity communications. Indeed, the laser wavelength’s narrow beam divergence requires a precise beam pointing at both ends of the optical link. The precise beam pointing makes the laser beam pointing to or from a moving object is one of the most challenging processes for optical space communications. In this work, the effect of the pointing error due to satellite platform vibration over the performance of the laser communication link of the optical inter satellite network (OISN) system in terms of the quality factor is investigated. Indeed, an optical communication system has been built using the OptiSystem program to simulate the link between satellites in space for the OISN system. In addition, the proposed system shows by simulation the optimal parameters’ values required for the design of the optical communication link between satellites of the OISN system. Moreover, the effect of pointing error due to the platform vibration on the performance of the OISN system is investigated for different scenarios of the pointing error (i.e., no pointing error; one side of the link with pointing error, and two sides of the link with pointing error). The simulation shows that, first, the optimal parameters that can be used for the optical communication link between satellites of the OISN system in terms of the laser wavelength; laser power; optical modulation scheme; optical telescope aperture diameter; and telescope optical efficiency. In addition, the simulation shows that existing pointing error due to vibration at one side of the optical link leads to degradation of the performance of the OISN system in terms of the quality factor for different laser beam power; distances between satellites; telescope diameters; and telescope efficiencies. Moreover, existing pointing errors at the two sides of the optical link lead to rapid degradation of the considered OISN system performance even with the increase of the laser power or telescope diameter, which tend to compensate for its effect initially and then quit.
Quotation does not need marks of quotation
Authors: De Brabanter Philippe
Published: February 2023

Two major types of quotation theories can be distinguished according to whether they regard marks of quotation as necessary (type-1) or not necessary (type-2) for quotation. I argue that taken at face value, the empirical evidence disqualifies type-1 theories. I then show that even if we accept that surface appearances can be deceptive – ‘unmarked’ quotations are simply not quotations, or absent marks are underlain by marks in hidden syntactic structure – type-1 theories still prove inadequate. By contrast, a particular form of type-2 theory,depiction theory, is consistent with the empirical evidence, proves compatible with syntactic analyses that posit a covert quotative operator, and is equipped to account for the grammatically deviant behavior of certain categories of quotations.
Fabrication of single color centers in sub-50 nm nanodiamonds using ion implantation
Authors: Xu Xiaohui , Martin Zachariah O. , Titze Michael , Wang Yongqiang , Sychev Demid , Henshaw Jacob , Lagutchev Alexei S. , Htoon Han , Bielejec Edward S. , Bogdanov Simeon I. , Shalaev Vladimir M. , Boltasseva Alexandra
Published: February 2023

Diamond color centers have been widely studied in the field of quantum optics. The negatively charged silicon vacancy (SiV−) center exhibits a narrow emission linewidth at the wavelength of 738 nm, a high Debye–Waller factor, and unique spin properties, making it a promising emitter for quantum information technologies, biological imaging, and sensing. In particular, nanodiamond (ND)-based SiV− centers can be heterogeneously integrated with plasmonic and photonic nanostructures and serve as in vivo biomarkers and intracellular thermometers. Out of all methods to produce NDs with SiV− centers, ion implantation offers the unique potential to create controllable numbers of color centers in preselected individual NDs. However, the formation of single color centers in NDs with this technique has not been realized. We report the creation of single SiV− centers featuring stable high-purity single-photon emission through Si implantation into NDs with an average size of ∼20 nm. We observe room temperature emission, with zero-phonon line wavelengths in the range of 730–800 nm and linewidths below 10 nm. Our results offer new opportunities for the controlled production of group-IV diamond color centers with applications in quantum photonics, sensing, and biomedicine.
Thematic role mappings in metaphor variation: contrasting Englishbakeand Spanishhornear
Authors: Esbrí-Blasco Montserrat , Navarro i Ferrando Ignasi
Published: February 2023

The present study investigates the scope of metaphors evoked by the culinary termbakein American English and its Peninsular Spanish equivalenthornear. The data analysed was extracted from theCorpus of Contemporary American Englishand theCorpus del Español: Web/Dialects. The target frames evoked and the frame elements involved in the metaphorical mappings were used to identify and analyse the metaphorical expressions. Furthermore, the type of process and thematic roles performed by the frame elements in the conceptual projections were examined to make divergences explicit. Our results suggest that metaphor diversity is broader in American English, as the source frame evoked bybakeexpresses metaphorically a larger number of target frames thanhornearin Peninsular Spanish. Consequently, these lexical items are not exact equivalents. Each language seems to place the experiential focus on different frame elements and thematic roles to create their metaphorical mappings, which points to differential cognitive preferences between both cultures.
A Short History of the Informal Economy
Authors: Breman Jan
Published: February 2023

When coined about half a century ago, employment in the informal economy was discussed by what it was not: formal. Addressed as a sector of the urban workforce, its definition was a summing up of descriptive traits which made manifest how people in the Global South, deprived of most or all means of production, earned their livelihood by selling their labour power. Investigating their predicament zoomed in on the restructuring of peasant economies and societies to post-peasant ones. The anticipated upward mobility, which was supposed to be boosted by the bargaining power of collective action, did not materialise. Rather than expanding formalisation of labour relations, the reverse took place. The small segment which had been promoted to and protected by regular and regulated employment was subjected to informalisation. In the onslaught of neo-liberal capitalism from the last quarter of the twentieth century onwards, labour flexibilisation and casualisation not only intensified in the Global South but also spread to the Global North. The new policies ended the brokerage which the nation–state once developed to mediate between the interests of capital and labour, leading to a worldwide shrinking of public institutions, space and representation. While the debate with regard to informality has remained firmly focused on labour and employment, I argue that corporate capital in collusion with étatist authority has not only effectuated the deregulation of paid work but also abandoned the legal code of formality ending in a state of lawlessness for the people at the bottom of the pile. In the reconfiguration, both politics and governance are next to big business as stakeholders in a regime of informality erosive of equality, democracy, civil rights, solidarity and shared well-being for humankind at large.
KEYWORDS: Capitalism; trade unionism; public sector; welfarism; footloose; self-reliance
Muscle-Specific Contributions to Vertical Ground Reaction Force Profiles During Countermovement Jumps: Case Studies in College Basketball Players
Authors: Kipp Kristof , Kim Hoon
Published: February 2023

Kipp, K and Kim, H. Muscle-specific contributions to vertical ground reaction force profiles during countermovement jumps: case studies in college basketball players. J Strength Cond Res XX(X): 000–000, 2022—The purpose of this study was to determine muscle-specific contributions to various types of vertical ground reaction force (vGRF) profiles in collegiate basketball players. Players from a men's (n = 5; height: 1.84 ± 0.14 m; mass: 92.8 ± 11.4 kg) and a women's (n = 5; 1.71 ± 0.09 m; mass: 80.1 ± 17.6 kg) basketball team completed 3–5 countermovement jumps (CMJ) while motion capture and force plate data were recorded. Muscle-specific contributions to vGRF were calculated through vGRF decomposition analysis. Profiles of vGRF were analyzed based on the presence of unimodal or bimodal peaks during the CMJ. The results showed that the soleus (SOL), gastrocnemii (GAS), vastii (VAS), and gluteus maximus (GMX) muscles all contributed to upward vGRF generation throughout the entire CMJ duration. The contributions were greatest for the SOL (1.78 body weight [BW]), intermediate for the GAS (0.96 BW) and VAS (0.72 BW), and negligible for the GMX (0.11 BW). For unimodal vGRF profiles, SOL contributions coincided with peak vGRF, whereas VAS contributions were stable throughout most of the CMJ. For bimodal vGRF profiles, SOL and VAS contributions explained the presence of the first vGRF peak, whereas GAS and VAS contributions explained the second vGRF peak. Differences between vGRF profiles appear to be the result of distinct force contributions from the VAS muscle, which may have implications for the analysis of vGRF time series data during CMJ testing.
The Application of Bio-Emulsion from Soybean Oil Partially Epoxidized as a Maintenance Technique for Flexible Pavements
Authors: da Silva Ataslina de P. , Falcão Caio C. , Uchôa Antonia F. J. , Barroso Suelly H. de A. , Williams Ronald C. , Brito Mateus S.
Published: February 2023

An increase in the use of biomaterials has been noted in recent years because of several impacts caused by human activities, especially for engineering and paving industry benefits. Several renewable resources, such as a nonfood source of soybean oil, have been successfully tested on modification of asphalt binders. However, their impact on the pavement life cycle is still unknown. Thereby, the objective of this research was to investigate soybean oil as a new, green supply for the maintenance of flexible pavements. The experimental plan consisted of the construction of field test sections through the application of sub-epoxidized soybean oil (SESO) over a flexible pavement surface. Rates of 0.1 and 0.3 L/m2 were chosen, and the main tests intended for study were functional procedures including the British pendulum and sand patch tests on the pavement surface, which were complemented with the indirect tensile strength test for mechanical analysis. The change in the chemical composition of the recovered binder was analyzed by thin layer chromatography and Fourier-transform infrared spectroscopy. The rheological properties were analyzed by frequency sweep, linear amplitude sweep, and multiple stress creep and recovery, and the tests were carried out with a dynamic shear rheometer. The effects of the SESO bio-emulsion demonstrated a rejuvenating activity on the properties of the aged binder, with mechanical and rheological improvements for both analyzed rates. A further investigation is indicated to evaluate the influence of time on the modification studied in this work. Such testing could ensure the use of SESO bio-emulsion as an environmentally friendly alternative for the maintenance of flexible pavements.
Borderline Personality Disorder (BPD) and Complex Posttraumatic Stress Disorder (CPTSD): A Network Analysis in a Highly Traumatized Clinical Sample
Authors: Owczarek Marcin , Karatzias Thanos , McElroy Eoin , Hyland Philip , Cloitre Marylène , Kratzer Leonhard , Knefel Matthias , Grandison Graeme , Ho Grace W. K. , Morris Deborah , Shevlin Mark
Published: February 2023

Whether complex posttraumatic stress disorder (CPTSD) and borderline personality disorder (BPD) diagnoses differ substantially enough to warrant separate diagnostic classifications has been a subject of controversy for years. To contribute to the nomological network of cumulative evidence, the main goal of the present study was to explore, using network analysis, how the symptoms of ICD-11 PTSD and disturbances in self-organization (DSO) are interconnected with BPD in a clinical sample of polytraumatized individuals (N = 330). Participants completed measures of life events, CPTSD, and BPD. Overall, our study suggests that BPD and CPTSD are largely separated. The bridges between BPD and CPTSD symptom clusters were scarce, with “Affective Dysregulation” items being the only items related to BPD. The present study contributes to the growing literature on discriminant validity of CPTSD and supports its distinctiveness from BPD. Implications for treatment are discussed.
Who Is the Real Victim?
Authors: Alvarez Cimmiaron F.
Published: February 2023

Sexual violence in its many forms is experienced by an overwhelming number of women and men in the United States.1 Yet, women who are survivors of sexual violence who are then accused of similar sexual violence lack a voice in the literature. In this autoethnography, the author tells a story of victimization using Ellis’s sociological introspection to analyze her feelings of the assault.2 Following this analysis, she continues her narrative by recounting another form of victimization: being falsely accused of sexual assault. Through sociological introspection, the author establishes parallels between her two experiences.
Characterization of pure and Cu doped V2O5 nanostructures and their Cu:V2O5/p-Si photodiode applications
Authors:   Department of Physics, Kongunadu Arts and Science College, Coimbatore641029 Tamil Nadu, India, Kumar N. S. , Babu B. ,   Department of Physics, National Chung Hsing University, Taichung 40227, Taiwan, Gowtham M. ,   Department of Physics, Kongunadu Arts and Science College, Coimbatore641029 Tamil Nadu, India, Sivakumar C. ,   Department of Physics, National Chung Hsing University, Taichung 40227, Taiwan, Ho M.S. ,   Department of Physics, National Chung Hsing University, Taichung 40227, Taiwan, Chang J. H. ,   Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung 413310, Taiwan, Mohanraj K. ,   Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung 413310, Taiwan
Published: February 2023

In this study, a wet chemical approach was exploited to synthesis of Cu-doped V2O5 (CVO) nanostructures with different doping concentrations of Cu at 5, 10, and 15%. The structural analysis confirms that samples annealed at 600o C rehabilitated to monoclinic V2O5. The surface morphology and nanostructure were studied by SEM and TEM analysis. The presence of various elements (Cu, V & O) and their compositions were confirmed using EDS and XPS measurements. The photoluminescence spectrum reveals a strong blue emission at 418 nm is ascribed to the electronic transition from vanadium interstitial to the valence band. Further, we fabricated the junction diodes by the nebulizer spray depositing CVO nanostructures in a colloidal form on the p-Si substrate at 150o C. Depending on the applied voltage and Cu doping level the rectifying behavior with a high rectification ratio (RR) was observed from the I-V characteristics of studied diodes. Inclusively, a V2O5 with substitution of Cu at.15% has significantly enhanced the photoresponse time and current density (J=4.19x10-4 A/cm2 ).
Synthesis, structural, morphological, functional, optical and particle size enhanced cadmium oxide nanoparticles on electro-chemical applications
Authors:   PG and Research Department of Physics, Thiru. A. Govindasamy Govt. Arts College,Tindivanam - 604 307, Tamil Nadu, India, Rajkamal N. , Sambathkumar K. ,   PG& Research Department of physics, Arignar Anna Government Arts College, Villupuram - 605 602, Tamil Nadu, India, Venkatachalapathy M. ,   PG and Research Department of Physics, Thiru. A. Govindasamy Govt. Arts College,Tindivanam - 604 307, Tamil Nadu, India, Latha V. ,   PG and Research Department of Physics, Thiru. A. Govindasamy Govt. Arts College,Tindivanam - 604 307, Tamil Nadu, India
Published: February 2023

The co-precipitation technique of cadmium oxide (CdO) nanoparticles in aqueous solutions at high temperatures was employed in this investigation. The potential for electrochemical activity was studied. Thus, a powder X-ray diffractometer was used to quantitatively evaluate the Scherer-calculated crystallite grain size and dislocation density. Scanning electron microscopy imaging and analysis revealed the distinct shape and structure of CdO nanoparticles. The above-mentioned nanoparticles were sorted into their respective functional groups by FTIR spectroscopy. The CdO nanoparticle size was measured in the nanometre range using a dilution-based particle size analyzer. There was a significant improvement in the CdO nanoparticles' ability to absorb UV-visible light. Their unique colours of light were made visible in the spectrum of their fluorescence emission, which allowed them to be clearly authenticated. An electrochemical probe into the phenomenon of super capacitance has revealed its fundamental characteristics. This CdO nanomaterial might be useful for scientific investigation.
Superior efficiency for homojunction GaAs solar cell
Authors:   Physics Department, College of Science, University of Jeddah, Jeddah, Saudi Arabia, Saif Ala'eddin A. , Albishri M. ,   Physics Department, College of Science, University of Jeddah, Jeddah, Saudi Arabia, Mindil A. ,   Physics Department, College of Science, University of Jeddah, Jeddah, Saudi Arabia, Qaeed M. ,   Physics Department, College of Science, University of Jeddah, Jeddah, Saudi Arabia
Published: February 2023

This research presents a simulation study to achieve an optimized homojunction GaAs solar cell using SILVACO TCAD. A solar cell with configuration of p+ -AlGaAs as window, p-GaAs as emitter, n-GaAs as base and n+ -AlGaInP as BSF layer is proposed. The AlGaInP is selected as BSF layer due to high bandgap as compared to AlGaAs that is usually used in literature. Large scale of variation for doping concentration and thickness for all layers of cell have been simulated. The results show an improvement for solar cell parameters for the optimized cell as compared with the proposed one, where Jsc increases from 40.03 mA/cm2 to 52.58 mA/cm2 , Voc slightly increases from 0.94 V to 1 V, Pmax increases from 30.8 mW/cm2 to 46.86 mW/cm2 , FF increases from 82.19% to 88.54% and η increases from 22.29% to 33.94%. Which confirms the effectiveness of the doping concentration and thickness on solar cell performance.
Mechanical, structural and optical properties of pristine and PVA capped zinc oxide nanocomposites
Authors:   KSR Institute for Engineering and Technology, Tiruchengode, Namakkal -637215, Tamilnadu, India, Gopinath P. , Suresh P. ,   Mechanical Engineering at Muthayammal Engineering College, Kakkaveri, Namakkal-637408, Tamilnadu, India, Jeevanantham V. ,   Vivekanandha College of Arts and Sciences for Women (Autonomous), Elayampalayam, Tiruchengode-637205, Tamilnadu, India
Published: February 2023

Zinc oxide (ZnO) and Poly vinyl alcohol capped zinc oxide (PVA-ZnO) of different concentrations were synthesized by precipitation method. PVA capped ZnO nanoparticles were examined to study the influence of ZnO nanoparticles on PVA as it possesses various properties such as mechanical, structural and optical. The synthesized nanoparticles were analyzed using XRD, FTIR, UV-Vis, SEM EDAX techniques. In the FTIR spectrum, the peak observed at 559 cm−1 indicates M–O stretching in the samples which specifies the interaction of ZnO with PVA matrix. The XRD patterns confirmed the presence of ZnO nanoparticles and the size of the ZnO nanoparticles and PVA- ZnO NPs were 76 nm and 61 nm. The uniform dispersion of ZnO nanoparticles as well as the interaction of nanoparticles with the PVA matrix were also observed in SEM analysis and the purity of NPs was determined from EDS analysis. The UV-vis spectra show the light absorption behavior of the ZnO NPs and ZnO-PVA nanocomposites and they exhibited high absorption in the UV region. The mechanical properties such as tensile strength and elongation were also analyzed for the synthesized samples.
NuRD‐independent Mi‐2 activity represses ectopic gene expression during neuronal maturation
Authors: Aughey Gabriel N , Forsberg Elhana , Grimes Krista , Zhang Shen , Southall Tony D
Published: February 2023

During neuronal development, extensive changes to chromatin states occur to regulate lineage‐specific gene expression. The molecular factors underlying the repression of non‐neuronal genes in differentiated neurons are poorly characterised. The Mi2/NuRD complex is a multiprotein complex with nucleosome remodelling and histone deacetylase activity. Whilst NuRD has previously been implicated in the development of nervous system tissues, the precise nature of the gene expression programmes that it coordinates is ill‐defined. Furthermore, evidence from several species suggests that Mi‐2 may be incorporated into multiple complexes that may not possess histone deacetylase activity. We show that Mi‐2 activity is required for suppressing ectopic expression of germline genes in neurons independently of HDAC1/NuRD, whilst components of NuRD, including Mi‐2, regulate neural gene expression to ensure proper development of the larval nervous system. We find that Mi‐2 binding in the genome is dynamic during neuronal maturation, and Mi‐2‐mediated repression of ectopic gene expression is restricted to the early stages of neuronal development, indicating that Mi‐2/NuRD is required for establishing stable neuronal transcriptomes during the early stages of neuronal differentiation.
Targetable Brg1‐CXCL14 axis contributes to alcoholic liver injury by driving neutrophil trafficking
Authors: Li Nan , Liu Hong , Xue Yujia , Xu Zheng , Miao Xiulian , Guo Yan , Li Zilong , Fan Zhiwen , Xu Yong
Published: February 2023

Alcoholic liver disease (ALD) accounts for a large fraction of patients with cirrhosis and hepatocellular carcinoma. In the present study we investigated the involvement of Brahma‐related gene 1 (Brg1) in ALD pathogenesis and implication in ALD intervention. We report that Brg1 expression was elevated in mouse models of ALD, in hepatocyte exposed to alcohol, and in human ALD specimens. Manipulation of Brg1 expression in hepatocytes influenced the development of ALD in mice. Flow cytometry showed that Brg1 deficiency specifically attenuated hepatic infiltration of Ly6G+ neutrophils in the ALD mice. RNA‐seq identified C‐X‐C motif chemokine ligand 14 (CXCL14) as a potential target for Brg1. CXCL14 knockdown alleviated whereas CXCL14 over‐expression enhanced ALD pathogenesis in mice. Importantly, pharmaceutical inhibition of Brg1 with a small‐molecule compound PFI‐3 or administration of an antagonist to the CXCL14 receptor ameliorated ALD pathogenesis in mice. Finally, a positive correlation between Brg1 expression, CXCL14 expression, and neutrophil infiltration was detected in ALD patients. In conclusion, our data provide proof‐of‐concept for targeting the Brg1‐CXCL14 axis in ALD intervention.
(In)dependence of elderly people at their home in performing basic activities of daily living
Authors: Santos Silvana Sidney Costa , Gautério Daiane Porto , Vidal Danielle Adriane Silveira , Rosa Bibiane Moura da , Zortea Bruna , Urquia Bianca Silveira
Published: February 2023

We aimed to outline the (in)dependence in performing basic activities of daily living of elderly people at home; apply educational geronto-technology to minimize specific functional loss; identify functional changes of these people, after using educational geronto-technology. This is a descriptive quantitative research, carried out in Rio Grande-RS, Brazil, with 109 elderly in three stages, from February 2011 to April 2012, using structured interview and the Katz Index. Data were grouped for statistical/descriptive treatment. First stage: female (69.7%), aged 60-69 years (43.0%), married (42.2%). Second stage: applying educational geronto-technology. Third stage: profile similarity of elderly people regarding the first stage. In performing basic activities of daily living, 21% of the elderly presented some dependence in the two data collections, highlighting the (urinary) continence function. Nurses need to understand the functional assessment of the elderly as a guiding tool for the planning and implementation of care.
Teens and young people with disabilities purchased physical violence: representations about disability
Authors: Alves Fabiana Paulino , França Inácia Sátiro Xavier de , Costa Gabriela Maria Cavalcanti , Lopes Maria Emília Limeira , Baptista Rosilene Santos
Published: February 2023

This study aimed to understand the representations of disability of adolescents and young people with disabilities acquired by violence. It was exploratory, descriptive, qualitative study was conducted in UBSF of Campina Grande, the period October 2011 to February 2012. In the universe of thirteen subjects, nine constituted the sample. Used as instruments form and semi-structured interviews. In the interviews we used the Content Analysis Categorical Theme ruled in the Theory of Social Representations. In the results, enunciated three categories are: representations on disability from anatomic changes; representations of feelings experienced disability and lack of representation of the term disability. The disability acquired in adolescence or youth as a result of violence brings indelible mark, representing biopsychosocial difficulties and limitations, compromising the quality of life.
Factors that intervene in exclusive breastfeeding: an integrative review
Authors: Abreu Flávia Corrêa Porto de , Fabbro Márcia Regina Cangiani , Wernet Monika
Published: February 2023

Early weaning is still very present in Brazil, despite the investments in promoting, supporting and protecting breastfeeding. This current integrative review of qualitative researches characterized the factors that intervene in the early weaning and identified the collaborative nuclei for its prevention. Fourteen primary researches composed this study, through a research developed in the following databases: BDENF, LILACS, MEDLINE, and SCIENCE DIRECT, with the descriptors: Breast Feeding, Weaning, and Nursing. Early weaning is related to the socioeconomic context, working mom, previous experiences, and breast problems. These are all considered in the decision-making on weaning. Health professionals need to review their practices to encourage and support breastfeeding, aiming to develop them in an individual and dialogued way together with the women and her family.
The embracement practice in prenatal care: limits, potentialities and contributions of nursing
Authors: Gonçalves Izabela Tamires Jully Pereira , Souza Kleyde Ventura , Amaral Marta Araújo , Oliveira Aline Reis Souza de , Ferreira Walkiria Fernandes Camilo
Published: February 2023

This study aims to analyze the practice of embracement in prenatal care, highlighting their limits and potentialities, and the contributions of nursing to its incorporation in the attention to pregnant women. This is a narrative review with search of scientific or institutional materials indexed in databases of electronic media, published from 2000 to 2010, using the subject descriptors and/or words, resulting in 32 productions. Data organization was performed, and then the content analysis, identifying four thematic categories. This study reinforced that the practice of embracement is a strategy that provides quality care during prenatal and in the relationship between the pregnant woman and the health professional. Despite the difficulties in its implementation, the practice of embracement in prenatal care may contribute to a favorable pregnancy outcome. The practice of embracement is consistent with the object of nursing care and therefore may potentiate it.
Systematization of nursing care to institutionalized elderly based on Virginia Henderson
Authors: Clares Jorge Wilker Bezerra , Freitas Maria Célia de , Paulino Monnyck Hellen Couto
Published: February 2023

This is an experience report that aims to describe the application of the nursing process to an institutionalized elderly, based on Virginia Henderson’s theory. The case study was developed in a long-stay institution for the elderly in Fortaleza, Ceará, Brazil, from May to August 2010, by filling out a form, physical examination and observation. Identifying the needs of elimination, communication, recreation and learning allowed to raise the nursing diagnoses, respectively: urge urinary incontinence; impaired social interaction; diversional activity deficit; and impaired memory. The nursing interventions were directed to the health and independence of the elderly. The application of systematic nursing care impacted positively on the health of the elderly, demonstrating the applicability of the nursing systematization based on Henderson’s theory in the scenery in which the study was developed.
The death and dying process: definitions of nursing undergraduate students
Authors: Sales Catarina Aparecida , Ferreira Patrícia Chatalov , Silva Vladimir Araujo da , Oliveira William Tiago de , Marcon Sonia Silva
Published: February 2023

The purpose of the study was to know the definitions nursing students have concerning the death-dying process. A descriptive-qualitative study developed in 2010, with 65 students of the first and last year of Nursing in a public university. Data was collected through semi-structured interview and submitted to content analysis. Data showed that the students possess diverse opinions concerning this process, per times seeing it as natural however difficult to be understood and accepted, especially because it brings pain, suffering, losses and family unstableness. They also revealed that they do not feel prepared to experience terminality in their future customers. The results reinforce the importance of having the thematic approached in the beginning of the undergraduate course, in curricular components or in extra-curricular activities, in order to provide the development of necessary support to experiencethe death-dying process of the customers.
Alkylated phosphorylated fibers: A new substitute for silicone in release paper manufacturing
Authors: Abenghal Lahbib , Lamoudan Hamid , Brouillette François
Published: February 2023

The production of release coatings has been increasing in recent years because of their use in various fields. However, commercially available release coatings are regarded as non-recyclable. As a consequence, the repulping of these residues is difficult, and their presence in the recycling stream represents an important source of contamination. One solution to this problem is to use new coating materials that can replace the siliconized backing, provided that these new materials are recyclable. As a solution to this problem, the authors propose the use of alkylated phosphorylated fibers to produce an environmentally friendly and inexpensive release paper. The results show that a surface application of hydrophobic phosphorylated fibers reduces the surface free energy of the paper support, as well as the peel strength, which facilitates the separation of the adhesive tape.