Physical Effects Research Articles

Coupling of tribovoltaic effect and tribo-electrostatic effect at dynamic semiconductor heterojunction interfaces

Tribovoltaic effect at the dynamic semiconductor interface is of great fundamental and practical importance for developing a variety of functional devices; yet, it can be coupled with a series of different physical effects, such as the contact-electrification induced electrostatic effect and mechanical wearing effect, and the coupling mechanisms are still remained to be elucidated. Herein, we investigated the coupling between tribovoltaic and tribo-electrostatic effects at the dynamic heterojunctions of two wide-bandgap semiconductors: zinc oxide (ZnO) and gallium nitride (GaN). It is found that, in the contact-separation mode, the direct-current outputs from tribovoltaic effect can be clearly distinguished from the alternating-current outputs from tribo-electrostatic effect. Then, humidity, external load resistance and pressure force are found to reveal the coupling characteristics of these two effects, that tribovoltaic outputs are less affected by humidity, show smaller matched impedance and are more sensitive to high pressure force, diverging from the tribo-electrostatic outputs. Lastly, we demonstrate that the mechanical wearing effect can be inhibited in contact-separation mode, achieving long-term stability over 50,000 cycles. Therefore, this work provides insights to the mechanism of tribovoltaic effects and practical guidance for high-performances tribovoltaic devices.

Drawing of fibres composed of shear-thinning or shear-thickening fluid with internal holes

We explore the drawing of a shear-thinning or shear-thickening thread with an axisymmetric hole that evolves due to axial drawing, inertia and surface tension effects. The stress is assumed to be proportional to the shear rate raised to the $n$ th power. The presence of non-Newtonian rheology and surface tension forces acting on the hole introduces radial pressure gradients that make the derivation of long-wavelength equations significantly more challenging than either a Newtonian thread with a hole or shear-thinning and shear-thickening threads without a hole. In the case of weak surface tension, we determine the steady-state profiles. Our results show that for negligible inertia the hole size at the exit becomes smaller as $n$ is decreased (i.e. strong shear-thinning effects) above a critical draw ratio, but surprisingly the opposite is true below this critical draw ratio. We determine an accurate estimate of the critical draw ratio and also discuss how inertia affects this process. We further show that the dynamics of hole closure is dominated by a different limit, and we determine the asymptotic forms of the hole closure process for shear-thinning and shear-thickening fluids with inertia. A linear instability analysis is conducted to predict the onset of draw resonance. We show that increased shear thinning, surface tension and inlet hole size all act to destabilise the flow. We also show that increasing shear-thinning effects reduce the critical Reynolds number required for unconditional stability. Our study provides valuable insights into the drawing process and its dependence on the physical effects.

Childhood adversity, accelerated GrimAge, and associated health consequences.

Childhood adversity is linked to psychological, behavioral, and physical health problems, including obesity and cardiometabolic disease. Epigenetic alterations are one pathway through which the effects of early life stress and adversity might persist into adulthood. Epigenetic mechanisms have also been proposed to explain why cardiometabolic health can vary greatly between individuals with similar Body Mass Index (BMIs). We evaluated two independent cross-sectional cohorts of adults without known medical illness, one of which explicitly recruited individuals with early life stress (ELS) and control participants (n = 195), and the other a general community sample (n = 477). In these cohorts, we examine associations between childhood adversity, epigenetic aging, and metabolic health. Childhood adversity was associated with increased GrimAge Acceleration (GAA) in both cohorts, both utilizing a dichotomous yes/no classification (both p < 0.01) as well as a continuous measure using the Childhood Trauma Questionnaire (CTQ) (both p < 0.05). Further investigation demonstrated that CTQ subscales for physical and sexual abuse (both p < 0.05) were associated with increased GAA in both cohorts, whereas physical and emotional neglect were not. In both cohorts, higher CTQ was also associated with higher BMI and increased insulin resistance (both p < 0.05). Finally, we demonstrate a moderating effect of BMI on the relationship between GAA and insulin resistance where GAA correlated with insulin resistance specifically at higher BMIs. These results, which were largely replicated between two independent cohorts, suggest that interactions between epigenetics, obesity, and metabolic health may be important mechanisms through which childhood adversity contributes to long-term physical and metabolic health effects.

“Tell me I’m okay”: A cross-sectional quality-of-life assessment of patients in a breast cancer survivorship program.

213 Background: The number of breast cancer survivors is increasing due to improvements in care and an aging population, leading to an increased need for care that addresses the physical and psychological needs of patients after completion of active treatment. The Sunnybrook Breast Cancer Survivorship Program was established to provide comprehensive evidence-based survivorship care and facilitate the transition to family doctors. Despite rising interest in dedicated survivorship care, there is little consensus regarding which individuals are likely to suffer the most long-term impacts of breast cancer treatment. Factors as varied as age, ethnicity, socioeconomic status, and treatment type can influence Quality-of-Life (QoL) outcomes. This cross-sectional assessment uses mixed methods to evaluate QoL trends in the patient cohort. Methods: Current patients of the Sunnybrook Breast Cancer Survivorship Program were asked to complete a baseline information form, as well as the EORTC QLQ-30 and BR-45, two validated measures of QoL for breast cancer patients and survivors. QoL, functional, and symptom domains were calculated from these responses accordingly and analyzed statistically. Patients reported their most bothersome QoL concerns through an open-ended questionnaire, which was analyzed and organized thematically. 99 patients have been recruited to date, of a planned 200. Results: We find that sexual health is of importance for this population, with 50 (50.5%) participants reporting sexual activity. Patients under 50 have poorer sexual functioning scores (p&lt;0.01) as well as more issues with body image (p&lt;0.05) than older survivors. Both married and under-50 patients are significantly more likely to have poorer outlooks on the future (p&lt;0.05; p&lt;0.01). Younger patients also tended to have worse role functioning, cognitive functioning, emotional functioning, and social functioning scores, though these differences were not statistically significant. Thematic analysis of qualitative data showed that patients’ chief concerns were the impact that ongoing side effects had on their daily functioning, impact of treatment on body image, disruptions to work and personal relationships, and strong anxiety about potential recurrence. Conclusions: While it is understood that younger BC survivors face unique challenges, our findings indicate that these obstacles persist into older age groups. In addition to physical side effects, such concerns as body image issues, social strain, and emotional functioning can drive QoL scores for these patients. Notably, many patients endorsed strong anxiety regarding potential recurrence that affected QoL, and identified dedicated survivorship follow-up as an ameliorating factor. Further research should be conducted into the unique needs of under-50 survivors, as well as the role of recurrence anxiety in impacting QoL.

A foundational framework for the mesoscale modeling of dynamic elastomers and gels

Discrete mesoscale network models, in which explicitly modeled polymer chains are replaced by implicit pairwise potentials, are capable of predicting the macroscale mechanical response of polymeric materials such as elastomers and gels, while offering greater insight into microstructural phenomena than constitutive theory or macroscale experiments alone. However, whether such mesoscale models accurately represent the molecular structures of polymer networks requires investigation during their development, particularly in the case of dynamic polymers that restructure in time. We here introduce and compare the topological and mechanical predictions of an idealized, reduced-order mesoscale approach in which only tethered dynamic bonding sites and crosslinks in a polymer’s backbone are explicitly modeled, to those of molecular theory and a Kremer-Grest, coarse-grained molecular dynamics approach. We find that for short chain networks (∼12 Kuhn lengths per chain segment) at intermediate polymer packing fractions, undergoing relatively slow loading rates (compared to the monomer diffusion rate), the mesoscale approach reasonably reproduces the chain conformations, bond kinetic rates, and ensemble stress responses predicted by molecular theory and the bead–spring model. Further, it does so with a 90% reduction in computational cost. These savings grant the mesoscale model access to larger spatiotemporal domains than conventional molecular dynamics, enabling simulation of large deformations as well as durations approaching experimental timescales (e.g., those utilized in dynamic mechanical analysis). While the model investigated is for monodisperse polymer networks in theta-solvent, without entanglement, charge interactions, long-range dynamic bond interactions, or other confounding physical effects, this work highlights the utility of these models and lays a foundational groundwork for the incorporation of such phenomena moving forward.

Warming reduces trophic diversity in high-latitude food webs.

The physical effects of climate warming have been well documented, but the biological responses are far less well known, especially at the ecosystem level and at large (intercontinental) scales. Global warming over the next century is generally predicted to reduce food web complexity, but this is rarely tested empirically due to the dearth of studies isolating the effects of temperature on complex natural food webs. To overcome this obstacle, we used 'natural experiments' across 14 streams in Iceland and Russia, with natural warming of up to 20°C above the coldest stream in each high-latitude region, where anthropogenic warming is predicted to be especially rapid. Using biomass-weighted stable isotope data, we found that community isotopic divergence (a universal, taxon-free measure of trophic diversity) was consistently lower in warmer streams. We also found a clear shift towards greater assimilation of autochthonous carbon, which was driven by increasing dominance of herbivores but without a concomitant increase in algal stocks. Overall, our results support the prediction that higher temperatures will simplify high-latitude freshwater ecosystems and provide the first mechanistic glimpses of how warming alters energy transfer through food webs at intercontinental scales.

An estimate of resident time of the Oort Cloud new comets in planetary region

We describe the result of our numerical orbit simulation which traces dynamical evolution of new comets coming from the Oort Cloud. We combine two dynamical models for this purpose. The first one is semi-analytic, and it models an evolving comet cloud under galactic tide and encounters with nearby stars. The second one numerically deals with planetary perturbation in the planetary region. Although our study does not include physical effects such as fading or disintegration of comets, we found that typical dynamical resident time of the comets in the planetary region is about 108 years. We also found that the so-called planet barrier works when the initial orbital inclination of the comets is small. A numerical result concerning the temporary transition of the comets into other small body populations such as transneptunian objects or Centaurs is discussed.

Planetary nebulae seen with TESS: New and revisited short-period binary central star candidates from Cycles 1 to 4

Context. High-precision and high-cadence photometric surveys such as Kepler or TESS are making huge progress not only in the detection of new extrasolar planets but also in the study of a great number of variable stars. This is the case for central stars of planetary nebulae (PNe), which have similarly benefited from the capabilities of these missions, increasing the number of known binary central stars and helping us to constrain the relationship between binarity and the complex morphologies of their host PNe. Aims. In this paper, we analyse the TESS light curves of a large sample of central stars of PNe with the aim of detecting signs of variability that may hint at the presence of short-period binary nuclei. This will have important implications in understanding PN formation evolution as well as the common envelope phase. Methods. We analysed 62 central stars of true, likely, or possible PNe and modelled the detected variability through an MCMC approach accounting for three effects: reflection, ellipsoidal modulations due to tidal forces, and the so-called Doppler beaming. Among the 62 central stars, only 38 are amenable for this study. The remaining 24 show large contamination from nearby sources preventing an optimal analysis. Also, eight targets are already known binary central stars, which we revisit here with the new high precision of the TESS data. Results. In addition to recovering the eight already known binaries in our sample, we find that 18 further central stars show clear signs of periodic variability in the TESS data, probably resulting from different physical effects compatible with the binary scenario. We propose them as new candidate binary central stars. We also discuss the origin of the detected variability in each particular case by using the TESS_localize algorithm. Finally, 12 targets show no or only weak evidence of variability at the sensitivity of TESS. Conclusions. Our study demonstrates the power of space-based photometric surveys in searching for close binary companions of central stars of PNe. Although our detections can only be catalogued as candidate binaries, we find a large percentage of possible stellar pairs associated with PNe, supporting the hypothesis that binarity plays a key role in shaping these celestial structures.

Natural biocide-assisted ultrasonic disinfection of wastewater effluent following a response surface methodology approach

The increasing prevalence of multidrug-resistant (MDR) bacteria in wastewater poses a significant threat to public health and the environment, necessitating more effective and sustainable disinfection methods. Ozonation and chlorination frequently fall short of eliminating these bacteria and can create toxic byproducts. This study introduces a novel disinfection strategy that combines ultrasonication with tea tree oil to target MDR bacteria in residential wastewater treatment systems, aiming to provide an eco-friendly, efficient, and scalable solution. The method harnesses tea tree oil's natural biocidal properties alongside the physical effects of ultrasonication, particularly acoustic cavitation, to enhance bacterial inactivation. Temperature, biocide dosage, and ultrasonication power were the three main factors that were optimized using response surface methodology. The system achieved a 2.2–2.4 log CFU/mL reduction of total bacteria in secondary effluent within 30 min and complete disinfection of modified effluent inoculated with high-strength MDR bacteria (6-log CFU/mL) in 50 min. Optimal conditions were 698.4 Watt power, 1.234 µl/mL tea tree oil, and 20.64 °C. Nucleic acid release and respiratory chain dehydrogenase inhibition indicated bacterial cell membrane rupture. Regrowth tests showed long-term effectiveness, with no bacterial colonies after three days. Using a natural biocide, the hybrid technique reduces operational costs and time, thus having commercial and environmental benefits. The capacity to remove MDR bacteria makes it an attractive contender for large-scale wastewater treatment.

Mechanism and Performance Control Methods of Sulfate Attack on Concrete: A Review

For concrete structures in marine or groundwater environments, sulfate attack is a major factor contributing to the degradation of concrete performance. This paper analyzes the existing literature on the chemical reactions and physical crystallization effects of sulfate attack on cement-based materials, summarizing the degradation mechanisms of corroded concrete. Experiments have been conducted to study the performance evolution of concrete under sulfate attack, considering both external environmental factors and internal factors of the cement-based materials. External environmental factors, such as the temperature, humidity, concentration, and type of sulfate solutions, wet-dry cycles, freeze-thaw cycles, chloride coupling effects, and stray currents significantly impact sulfate attack on concrete. Internal factors, including internal sources of corrosion, the chemical composition of the cement, water-cement ratio, and the content of C-S-H gel and Ca(OH)2, influence the density and sulfate resistance of the cement-based materials. Additionally, five typical methods for enhancing the sulfate resistance of concrete are summarized. Finally, the paper identifies current challenges in the study of corroded concrete and proposes directions for future research.

Cardiac rehabilitation and secondary prevention of CVD: time to think about cardiovascular health rather than rehabilitation

AbstractDuring the past century, there have been major developments in the medical and surgical treatment of cardiovascular disease (CVD). These advancements have resulted in more people surviving initial events and having reduced length of stay in hospital; consequently, there is an increasing number of people in need of ongoing and lifelong cardiovascular risk management. The physical and emotional effects of living with CVD are ongoing with broad challenges ranging from the individual to system level. However, post-discharge care of people with coronary disease continues to follow a 50-year-old cardiac rehabilitation model which focuses on the sub-acute phase and is of a finite in duration. The aim of this paper is to consider the concept of supporting survivors to live well with CVD rather than ‘rehabilitating’ them and propose factors for consideration in reframing secondary prevention towards optimizing cardiovascular health. We discuss deeply-held potential considerations and challenges associated with the concept of supporting survivors achieve optimal cardiovascular health and live well with CVD rather than ‘rehabilitating’ them. We propose the concept of 5 x P’s for reframing traditional cardiac rehabilitation towards the concept of cardiovascular health for survivors beyond ‘rehabilitation’. These include the need for personalization, processes, patient-centered care, parlance, and partnership. Taken together, consideration of challenges at the systems and population level will ultimately improve engagement with secondary prevention as well as outcomes for all people who need it.

Sexual Abuse Among Adolescents (13 to 19 Years) of Boys and Girls in Three Private Schools in Dhaka City, Bangladesh

Background: Sexual abuse in adolescents is a global public health issue with severe physical, psychological, and long-term effects. In Bangladesh, societal stigma, underreporting, and weak legal enforcement further exacerbate the issue. Objectives: The primary objective is to evaluate the prevalence and patterns of sexual abuse among adolescents in three Dhaka schools, with secondary objectives to assess their clinical, demographic, and mental health status. Method and Materials: This cross-sectional study aims to evaluate the prevalence of sexual abuse among 130 adolescents (aged 13-19) from three private schools in Dhaka, selected through purposive sampling. Data will be collected using a pre-tested questionnaire administered by trained research assistants. The data will be analyzed using SPSS and STATA for both descriptive and inferential statistics. Result: The study included 130 adolescents, with boys making up 53.8% and girls 46.2%. The most prevalent form of sexual abuse was verbal abuse, reported by 46.2% of participants, followed by physical touch (30.8%) and online abuse (15.4%). Peers or schoolmates were the primary perpetrators in 38.5% of cases, while 19.2% reported abuse by strangers. Notably, 46.2% of the adolescents did not report the abuse to anyone. Of those who did, 30.8% informed school authorities, and 23.1% confided in their family. Conclusion: Children, particularly girls, are highly vulnerable to sexual abuse due to lack of parental awareness, weak reporting systems, and difficulty in disclosing abuse. Strengthening community vigilance and reporting mechanisms is essential to protect them.

Identifying the most critical side effects of antidepressant drugs: a new model proposal with quantum spherical fuzzy M-SWARA and DEMATEL techniques

Identifying and managing the most critical side effects encourages patients to take medications regularly and adhere to the course of treatment. Therefore, priority should be given to the more important ones, among these side effects. However, the number of studies that make a priority examination is limited. There is a need for a new study that determines which of these effects are more priority to increase the quality of the treatment. Accordingly, this study aims to define the most important side effects of antidepressant drugs with a novel model. Quantum Spherical fuzzy M-SWARA technique is considered to compute the importance weights of the items. The main contribution of this study is that the most critical side effects can be understood for antidepressant drugs by establishing a novel decision-making model. The findings demonstrate that psychological side effects are defined as the most critical side effects of antidepressant drugs. Furthermore, physical side effects also play a key role in this condition. Side effects in antidepressant treatment have a great impact on the effectiveness of treatment and patient compliance.

Thermo-physical properties of non-linear radiative flow of magnetized Ellis fluid comprising analysis of oxytactic microorganisms and nano-enhanced phase materials

The basic aim of existing analysis is to scrutinize the two-dimensional flow regime of Ellis model under the consideration of magnetic field. The effect of thermophoresis as well as Brownian motion for Ellis model with the impacts of parameters like thermal radiation, bioconvection of microorganisms and viscous dissipation are also deliberated. On the other hand, the features of bioconvection have been systematically examined for its extensive uses in microbial developed oil recovery, gas-bearing alluvial basin, bio-microsystems and oil modeling. Under the effects of tension force, viscoelastic materials change according to viscoelastic and elastic illustration. Here we considered it due to hydro-dynamics unevenness and designs within suspension of subjective spinning microbes. Therefore, this paper presents a theoretical and computational evaluation of the unsteady 2D Bioconvection flow of Ellis fluid, which has non-linear radiation features as well as gyro-tactic microorganisms, illuminating the novelty of the work. Here, convective B. Cs are used for the current study, coupled PDEs are changed into coupled ODEs by using some suitable B. Cs and similarity conditions. The acquired ODEs are numerically solved by using bvp4c scheme. Here Physical effects concerning all such parameters are studied in detail and represented graphically. We found that increasing behavior of temperature for higher value of Brownian movement and thermophoresis parameter whereas fall in Prandtl number. The gyrotactic microbes result in reduction for rising values of Peclet number.

“There is a life before and after cancer”: experiences of resuming life and unmet care needs in stage I and II melanoma survivors

Although the largest increase in melanoma incidence is observed for localised melanoma, little research has been done on its impact. Despite favourable prognoses and relatively short treatment trajectories, diagnosis and treatment may significantly impact life post-treatment. Therefore, the aim of this study was to gain an in-depth understanding of stage I and II melanoma survivors’ experiences resuming life after treatment and their associated survivorship care (SSC) needs. A qualitative focus group study was conducted with 18 stage I or II melanoma survivors, divided over three focus groups with 6 survivors each. Transcripts were analysed through thorough thematic content analysis, using multiple phases of coding. In resuming life, survivors experienced profound initial impacts of disease and treatment, fed by a perceived lack of knowledge and underestimation of melanoma. They faced unexpected physical and emotional effects post-surgery, experiencing mixed feelings from relief to fear and uncertainty. Survivors felt misunderstood, had to adjust their lives, and managed personal and external expectations while experiencing a positive shift in life perspective, leading to a notable difference in life before and after cancer. In terms of SSC needs, survivors stressed the need for tailored information, accessible resources, patient-centered follow-up, and supportive care addressing the total impact of disease and treatment. These findings highlight the importance of improving melanoma awareness and providing holistic SSC not only to advanced, but also to localised melanoma survivors. A tailored survivorship care plan could facilitate access to information and supportive care, helping patients resume their lives.

Effects of GSH on Alcohol Metabolism and Hangover Improvement in Humans: A Randomized Double-Blind Placebo-Controlled Crossover Clinical Trial.

The definition of alcohol hangovers refers to a combination of mental and physical side effects that occur after drinking. One of the ways that hangovers can be ameliorated is by promoting the rapid and effective elimination of acetaldehyde to alleviate the discomfort it causes. This study aimed to investigate the effects of GSH (yeast extract containing 50 mg of glutathione) on the hangover-relieving effect. A randomized double-blind placebo-controlled crossover clinical trial was conducted with 40 participants who reported experiencing hangover symptoms. Participants consumed alcohol at a rate of 0.78 g per kg body weight with 40% whiskey, adjusted according to their weight. Alcohol and acetaldehyde concentrations in serum were analyzed at 0, 0.25, 1, 2, 4, 6, and 15 h after alcohol consumption. In the GSH group, the serum alcohol concentration decreased, although this change was not statistically significant. The serum acetaldehyde concentration was significantly lower in the GSH group in comparison to the placebo group (at 0.25, 1, 4, and 6 h (p < 0.01) and at 0.5, 2, and 15 h (p < 0.001) after alcohol consumption). However, there was no significant difference between the two groups on questionnaires such as the Acute Hangover Scale and the Alcohol Hangover Severity Scale. Overall, we consider the discovery that GSH lowered acetaldehyde concentration, a crucial factor in alcohol metabolism, to be more considerable. Therefore, GSH administration effectively reduces acetaldehyde levels in serum. This result suggests that this effect may contribute to the relief of hangover symptoms.

Daughters and daughters-in-law providing elderly care: a qualitative study from Karachi, Pakistan

Background and contextProviding care to the elderly is an emerging area of interest due to the increase in elderly population not only in the developed world but also in low and middle income countries. In Pakistan a country with an overall population of over 200 million, the elderly population amounts to 11.3 million. Caregiving of the elderly tends to occur within the kinship motivated by sociocultural norms as well as absence of government support facilities. While quantitative literature exists in Pakistan describing the “caregiver’s burden,” an in-depth analysis into the experiences of familial caregivers is missing.MethodsThe research used qualitative methods with the aim to explore the lived experiences of 7 daughters and 3 daughters-in-law, living in Karachi, Pakistan providing care to the elderly requiring assistance in at least two tasks of daily living.ResultsFive themes were developed inductively through the phenomenological method. All participants were Muslim and belonged to the upper economic strata of the society. Findings reveal that obligations to care are dominant in kinship circles particularly among women. Participants highlighted the importance of elderly in the Pakistani society, especially due to the religious lens that considers them as blessings. Daughter caregivers spoke about caregiving of their parents as a form of role reversal, emphasizing also upon the life-long emotional bond that served as a strong motivator. On the other hand, for daughter-in-law caregivers, motivations to care also stemmed from social expectations and kinship obligations. All participants reported multiple difficulties during the caregiving experience, despite existence of paid formal help, with respect to balancing multiple role demands and the nature of caregiving that requires constant effort. Results also illustrate that despite the desire to care for the elderly within a collectivist and patrilocal society, participants experienced multiple physical and emotional effects. However, a few also reported an increase in self-mastery and self-worth.ConclusionThis study reveals that despite increasing urbanization and more women working outside the home, providing care to the elderly appears to be centered within the kinship circle. The research makes important contributions to the ageing literature in Pakistan with relevance to other South Asian contexts.

'I Was too Tired to Show Compassion': A Phenomenological Qualitative Study on the Lived Compassion Fatigue Experiences of Nurses Working in Acute Inpatient Psychiatric Units.

Psychiatric nurses are at risk of experiencing compassion fatigue. Despite the economic, emotional and physical effects of compassion fatigue, it has not been sufficiently investigated in the field of psychiatric nursing, and the lived experiences of compassion fatigue, in particular, require further investigation using qualitative methods. The aim of this study was to examine the lived compassion fatigue experiences of nurses working in psychiatric clinics using a phenomenological approach. The study was conducted between December 2023 and February 2024 with 22 psychiatric nurses working in acute psychiatric clinics. Data were collected through individual, in-depth interviews, and analysed using Collaizi's seven-step descriptive analysis approach. Data analysis revealed four main themes and eight subthemes: (1) being a psychiatric nurse (multifaceted role and benefits), (2) tiredness (from traumatic effects to depersonalisation and emotional isolation), (3) causes of compassion fatigue (patient derived, system and working environment derived) and (4) coping methods (individual and expectations). Due to difficult patient profiles and adverse working conditions, psychiatric nurses experience compassion fatigue and may become desensitised to patient needs over time. Institutional support in the form of training for nurses on recognising and coping with compassion fatigue, as well as a safe and workload-balanced working environment, is essential.

Experimental substantiation of the methodology for the development of physical qualities women of mature age (45-55 years)

This article deals with issues aimed at the development of middle-aged women who are able to stimulate the endurance of the abdominal press, the flexibility of the hamstrings, and the muscular endurance of the upper body after 12 weeks of physical exercises for two sessions of 60 minutes per week. Squats and push-ups increase strength and muscular endurance. A woman's physical condition is also largely tied to the phases of the menstrual cycle. At the same time, the manifestation of changes in the body of women during this period is very diverse. Menstrual health is a state of complete physical, mental and social well-being, and not just the absence of diseases or ailments associated with the menstrual cycle. This is the process of preparing the body for pregnancy. Menstrual health has a huge impact on society, from the impact on careers and opportunities to health issues. Menstruation greatly affects the physical performance of athletes due to symptoms such as cramps, back pain, headache and bloating. In addition, statistics claim that 75% of women who engage in any type of physical activity experience negative side effects due to their menstrual cycle. During menstruation, women suffer from several physical, psychological, and behavioral symptoms that often result from premenstrual syndrome (PMS). Approximately 75% of women suffer from PMS and may experience headaches, abdominal cramps, bloating, fatigue, anxiety, high stress levels, or a combination of these symptoms. These symptoms range from mild to so severe that some women take days off work. While this is difficult for women to deal with in general, it affects athletes even more, who often have to go through rigorous training and physical exertion on a daily basis.

Content Analysis of the Effects of Domestic Violence on Child Victims in the Movie Precious

Domestic violence is a dynamic phenomenon that can occur in all walks of life. Given the role of film as a tool to convey ideas and influence the audience, research on the effects of domestic violence in the movie Precious is interesting to do. The rampant news about domestic violence makes this research relevant because this movie can provide an overview of the destructive impact of domestic violence on children as victims. The aim of this research is to find out what the physical, psychological, sexual, and social effects are due to domestic violence experienced by the main character in the film Precious. This research uses a quantitative content analysis method with a descriptive approach. Data will be measured using a measurement table. The research population is the movie Precious with a duration of 1 hour 50 minutes, with a sample of scenes containing the effects of domestic violence. The results showed that Precious depicts various effects of domestic violence, such as loss of self-confidence, anxiety, lack of attention from parents, withdrawal from the family, use of harsh words, stress, depression, self-isolation, not given living expenses, embarrassment to meet others, problematic education, trauma, pregnancy, children replacing parental roles, loss of jobs, imagining the violence experienced, bruises, bumps on the body, and injuries.