Rest Time Research Articles

Exploring the Risk Factors for Deep Vein Thrombosis after Percutaneous Nephrolithotomy.

Deep vein thrombosis (DVT), a frequent complication following percutaneous nephrolithotomy (PCNL), may lead to severe conditions like pulmonary embolism. Current knowledge on postoperative DVT risk factors is, however, limited. The aim of our study was to investigate the risk of DVT after PCNL. A retrospective study was conducted on patients who underwent PCNL from March 2020 to March 2023 at our institution. Patient demographics and clinical data, including, DVT-specific information, preoperative labs, and surgical details, was evaluated. One hundred patients were included. Thirty-two (20 males, 12 females, mean age 52.5 ± 7.4 years) developed lower limb DVT post-surgery, while the remaining 68 (48 males, 20 females, mean age 51.1 ± 5.5 years) had no DVT symptoms. Analysis revealed significant correlations between hyperlipidemia, operating time, postoperative bed rest duration, D-dimer level on the first day after surgery, Caprini risk assessment model (RAM) score, and DVT risk. D-dimer on the first day after percutaneous nephrolithotomy, postoperative bed rest time and Caprini RAM scores were independent risk factors for DVT after PCNL. Sex, age, hypertension status, diabetes status and smoking and drinking habits were not significantly associated with DVT risk. D-dimer on the first day after PCNL, postoperative bed rest time and Caprini RAM scores were independent risk factors for DVT after PCNL.

Challenges and support needs in psychological and physical health among pilots: a qualitative study.

Physical and mental health problems among pilots affect their working state and impact flight safety. Although pilots' physical and mental health problems have become increasingly prominent, their health has not been taken seriously. This study aimed to clarify challenges and support needs related to psychological and physical health among pilots to inform development of a more scientific and comprehensive physical and mental health system for civil aviation pilots. This qualitative study recruited pilots from nine civil aviation companies. Focus group interviews via an online conference platform were conducted in August 2022. Colaizzi analysis was used to derive themes from the data and explore pilots' experiences, challenges, and support needs. The main sub-themes capturing pilots' psychological and physical health challenges were: (1) imbalance between family life and work; (2) pressure from assessment and physical examination eligibility requirements; (3) pressure from worries about being infected with COVID-19; (4) nutrition deficiency during working hours; (5) changes in eating habits because of the COVID-19 pandemic; (6) sleep deprivation; (7) occupational diseases; (8) lack of support from the company in coping with stress; (9) pilots' yearly examination standards; (10) support with sports equipment; (11) respecting planned rest time; and (12) isolation periods. The interviewed pilots experienced major psychological pressure from various sources, and their physical health condition was concerning. We offer several suggestions that could be addressed to improve pilots' physical and mental health. However, more research is needed to compare standard health measures for pilots around the world in order to improve their physical and mental health and contribute to overall aviation safety.

FİZİKİ MƏHDUDLUĞU OLAN ATICILARIN İDMAN MƏŞQİNİN İDARƏ OLUNMASI

Management of Sports Training of Shooters with Physical Limitations Summary In one of the articles of the convention "On the rights of the disabled" adopted by the General Assembly of the United Nations in 2006, it is reflected in giving disabled people the opportunity to spend leisure and rest time together with other people, to participate in sports events. In order to solve the tasks arising from this article, opportunities have been created for the disabled to engage in various sports sections. People with various physical disabilities (restrictions) work in these units. Physically disabled (limited) athletes engaged in shooting sports have won certain achievements by performing in national and international level competitions. However, there are certain problems in the organization and conduct of training with such athletes. From this point of view, it is important to develop the methodology of training with physically disabled shooters. The article talks about various operations performed by the coach with the active participation of shooters, which are the basis of sports training management of shooters with physical limitations. Key words: shooting, air pistol, training process, physical limitation, management, activity

Faktor Resiko Cedera pada Crossfit ditinjau dari Body Posture

Crossfit is a sport that focuses on functional movements in everyday life with a mixture of various types of exercises with competitive and high intensity quickly and successively with limited rest time. High intensity exercise will put a very high risk of injury. To reduce this risk, it is important for practitioners to pay attention to body posture when doing exercises. The purpose of this study was to determine the risk factors for injury to crossfit in terms of body posture. The research method used is a literature review compiled based on secondary data in the form of research journal reviews obtained from databases spread on the internet related to risk factors for injury to crossfit in terms of body posture. Research journals are obtained from Google Scholar, Sage Journals, and springer links. By using keywords namely crossfit injury, sport body posture. Results: One of the factors that influence the occurrence of crossfit injuries is body posture. From several studies say that many crossfit practitioners are injured due to technical errors that cause loading in some parts of the body. Conclusion: Based on some of the literature discussed, it can be concluded that the risk of injury to crossfit practitioners can occur due to body posture and poor movement techniques from crossfit practitioners.

Effects of a work schedule with abated quick returns on insomnia, sleepiness, and work-related fatigue: results from a large-scale cluster randomized controlled trial.

To investigate the effect of a work schedule with abated quick returns (i.e. > 11 hours between two shifts) on insomnia, daytime sleepiness, and work-related fatigue compared to a shift schedule maintaining the usual number of quick returns. A two-armed cluster randomized controlled trial including 66 units was conducted at a university hospital in Norway. Units with healthcare workers on rotating shift schedules were randomly assigned to a shift schedule with abated quick returns (intervention) or to continue with a schedule including quick returns as usual (control) for 6 months. Questionnaires assessed symptoms of insomnia (Bergen Insomnia Scale [BIS]), daytime sleepiness (Epworth Sleepiness Scale [ESS]), and work-related fatigue (Revised Swedish Occupational Fatigue Inventory) at baseline and towards the end of the intervention. Data were analyzed using multilevel linear mixed-effects models, and Cohen's d was used to calculate the effect size between groups. Overall, 1314 healthcare workers (85.2% female) completed the baseline questionnaire (response rate 49.1%), and 552 completed the follow-up questionnaire. The intervention reduced quick returns from an average of 13.2 (SD = 8.7) to 6.7 (SD = 6.0), while the control group's average remained relatively unchanged from 13.2 (SD = 8.7) to 12.0 (SD = 9.3). Results showed a small improvement in symptoms of insomnia (BIS; d = -0.13, p = .022) and daytime sleepiness (ESS; d = -0.14, p = .013) in favor of the intervention. No effects were observed on work-related fatigue. Reducing the number of quick returns in the work schedule resulted in improvements in insomnia and daytime sleepiness. The findings highlight the importance of sufficient daily rest time in the work schedule of healthcare workers. Health Promoting Work Schedules: The Effect of Abolishing Quick Returns (HeWoS); clinicaltrials.gov/ct2/show/NCT04693182; Registered at ClinicalTrials.gov with the identifier NCT04693182.

Effects of Rest Time and Curing Regime on Short- and Long-Term Strength of Class C Fly Ash-Based Alkali-Activated Mortars.

This study investigated how different rest times affect the strength development of fly-ash-based alkali-activated mortar (AAM) over a period of 90 days. Two types of fly ash with varying calcium oxide contents of 37 and 21% were used. The rest times ranged from 2 to 36 h, and three curing methods (ambient, oven, and steam) were tested. The results showed that the rest time significantly influenced the compressive strength of the AAM. The optimal rest time was found to be between 12 and 30 h depending on the curing method and fly ash type. Beyond this range, there were only minor changes in strength. One type of fly ash (FA21) showed higher strength with longer rest times up to 30 h, while the other type (FA37) had the highest strength within a rest time range of from 12 to 24 h. Over the 90-day period, the specimens cured under ambient, oven, and steam conditions at 55 °C (131 °F) experienced increasing strength, but those steam-cured at 80 °C (176 °F) showed a decrease in strength. Analysis revealed the formation of hydration products in FA37, while FA21 showed a reduction in peaks for its main compounds. Additionally, XRD analysis revealed the formation of hydration products (CSH and CASH) in FA37, while FA21 displayed a reduction in peaks for its main compounds. EDS analysis indicated the presence of partially unreacted FA particles, highlighting the impact of curing methods on dissolving FA particles and the formation of geopolymer products (NASH and CNASH) responsible for compressive strength development.

Hubungan Beban Kerja Mental dengan Kelelahan Kerja dan Stres Kerja pada Pegawai PT X

PT X is a company engaged in the electricity sector whose work is administrative services related to selling and distributing energy. As a form of customer satisfaction, employees must address customer complaints. Demands for completing targets on time and public complaints are getting higher, forcing employees to wok overtime outside of working hours. These demands cause high mental workload. In addition, the disproportionate number of employees and the workload given make employees complain about symptoms of work fatigue and stress. The purpose of this study was to determine the correlation between mental workload with work fatigue and work stress in the PT X. This study is quantitative observasional analytic with a cross sectional apporach with a population of 107 employess of PT X and a sample of 107 employees. The data collection technique is total sampling. Measuring data on mental workload and work stress using a questionnaire and for work fatigue using a reaction timer. The analysis technique used was distributive for univariate analysis and somer’s test for bivariate analysis. The results of the somer'd correlation test showed that there was a significant relationship between mental workload and work fatigue, with a moderate correlation and positive direction (+) (p = 0.000; r = 0.503), and a significant relationship between mental workload and work stress, with a strong correlation and positive direction (+) (p = 0.000; r = 0.622). There is a correlation between mental workload with work fatigue and work stress for employees at PT X. To employess can adjust working hours properly to demands of duties or responbilities ouside of work and employess should use the rest time that has been given properly.

Evaluation of current practices for dogs engaged in assistance and therapy support programs within Australia

Evaluation of current practices for dogs engaged in assistance and therapy support programs within Australia

Anti-aging effect and molecular mechanism of Xiyangshen Sanqi Danshen Granules based on metabolomics and bioinformatics

This study investigated the anti-aging mechanism of Xiyangshen Sanqi Danshen Granules based on metabonomics, network pharmacology, and molecular docking. The aging mice model was induced by intraperitoneal injection of D-galactose(D-gal). Mice were randomly divided into a control group, model group, melatonin group(MT group), and low, medium, and high dose groups of Xiyangshen Sanqi Danshen Granules(XSD-L, XSD-M, and XSD-H). An open-field experiment was conducted, and the expression of cell cycle arrest proteins(p16) and phosphorylated histone family 2A variant(γH2AX) in the brain tissue was detected by immunofluorescence. The expression of interleukin-1β(IL-1β) and interleukin-6(IL-6) in the brain tissue was detected by enzyme-linked immunosorbent assay(ELISA). Metabolomics analysis was performed on the serum of mice in control, model, and XSD-H groups to obtain metabolic processes and metabolites. The effective chemical components and potential targets of Xiyangshen Sanqi Danshen Granules were predicted through network pharmacology, and the network diagram of "drug-effective chemical components-key targets" was constructed. Gene Ontology(GO) analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG) analysis were carried out, and a protein-protein interaction(PPI) network was constructed to clarify the anti-aging mechanism of Xiyangshen Sanqi Danshen Granules. The results showed that the Xiyangshen Sanqi Danshen Granules could significantly improve the aging degree of D-gal mice, significantly improve the total motion distance and the mean motion speed of D-gal mice, and reduce the rest time. In addition, Xiyangshen Sanqi Danshen Granules could significantly reduce the protein levels of IL-6 and IL-1β and the expression of p16 and γH2AX in D-gal mice. Compared with the model group, 66 differential metabolites(DMs) were significantly up-regulated, and 91 DMs were down-regulated in the XSD-H group. Moreover, four key metabolic pathways(tryptophan metabolism, glycerophospholipid metabolism, pyrimidine metabolism, and lysine degradation) and 16 biomarkers(lysine, tryptophan, indoleacetaldehyde, PCs, LysoPCs, 3-hydroxyanthranilic acid, melatonin, etc) were screened out. 58 main active components and 62 key targets of Xiyangshen Sanqi Danshen Granules were screened by network pharmacology. The GO functional enrichment analysis found the positive regulation of gene expression, drug response, etc. KEGG pathway enrichment screening involved diabetic complications-related AGE-RAGE signaling pathway, hypoxia inducible factor-1 signaling pathway, etc. Through the PPI network and molecular docking, six potential core targets of STAT3, MAPK1, MAPK14, EGFR, FOS, and STAT1 were screened.

Effects of the Surface Type on the Sprint Force–Velocity–Power Profile of Female Beach Handball Top-Level Players

Beach handball (BH) is characterized by high-intensity actions, such as accelerations and short rest times, in combination with long periods of low-intensity activity during a match. The purpose of this study was to establish a comparative analysis between the effect of a hard surface vs. sandy surface on the properties of the sprint Force–Velocity–Power Profile (FVP) of female beach handball top-level players. Fourteen female BH players participated in this research. A cross-sectional investigation was performed in order to evaluate the determining variables of the FVP profile for different surfaces. After a specific warm-up, two maximal 20–30 m sprints (4 min resting between trials) were performed in two conditions (hard surface and sand) within 10 min. The female BH players showed higher mean values for all the FVP profile variables (p < 0.001) on the hard surface compared to sand, in addition to lower values for the 5 m (ES = 2.29 to 3.89) and 20 m sprinting times (ES = 2.39 to 3.99) (p < 0.001). However, the decrease in the ratio of force over acceleration was not discriminant between the surfaces. Positive correlations were found for the speed variables (0.691–0.807, p < 0.01), as well as the Pmax (0.520, p = 0.035), between the surfaces. A prior knowledge of the FVP profile for hard–sandy surfaces could offer an important reference value about the sprint properties of this population, and be useful for evaluating the efficiency, as well as the effect on the sprint and gaming performance, of specifically oriented training programs based on those reference values.

Is it true that students' mental health is a problem? Literature Study of the Causes of Mental Health Problems

One of the factors that determine whether teenagers are more vulnerable to mental disorders is that teenagers tend to have explosive emotional outbursts. One of the causes of psychological disturbance in this group of students is excessive workload. This research used the literature review or literature study method. Through this literature review, the author will find various data and information that can be used through various journals and books as answers to the problems that the author is studying. This research aims to find out how to prevent mental health problems experienced by students. The results of this research show that mental health refers to an individual's condition that facilitates progress in all dimensions of development, such as physical, intelligence, and emotional, towards their best potential which is in line with the development of others. Aspects of mental health also include efforts to manage stress, difficulties in adaptation, interactions with other people, and decision-making processes. Students feel that the final assignment is quite a heavy burden. Anxiety is a personal sensation related to feelings of tension, restlessness, and worry associated with increased nervous system activity. Students are carrying out their final assignments which are considered to be a difficult task that can cause anxiety. The impact felt by students will be sleep disturbances, lack of rest time, and unhealthy eating patterns. One of the first steps is for students to have a good understanding of their body condition, including physical and mental. students can relax for their body and mind.

Hierarchical temporal sequence convergence in prescribed-time control for quadrotor UAVs under unknown dynamic disturbances

This paper studies the trajectory tracking control problem for quadrotor unmanned aerial vehicles (UAVs) under unknown disturbances and model uncertainties. A priori information about disturbances is required for most existing prescribed time-extended state observer (PTESO) methods. For unknown disturbances, a barrier function-based adaptive prescribed-time extended state observer (BFAPTESO) is designed by utilizing the time-domain transformation and adaptive mechanism in the prescribed time and using the barrier function method in the rest time. To improve tracking performance amidst model uncertainty, a finite-gain prescribed-time state observer (FGPTSO) is applied in the position loop. Then, the novel prescribed-time controllers are designed in conjunction with the above observers in the attitude and position loops. The proposed control scheme mitigates unknown dynamic disturbances and model uncertainties, guaranteeing that the tracking error achieves and sustains the preset accuracy within the prescribed time. Finally, numerical results indicate that the proposed control method is effective and robust.

Labor market: current situation and near-term prospects

The article analyzes the current situation in the Russian labor market, which affects all its participants such as employing organizations and employees of various professions, specialties, and skill levels. All participants of the labor market either justify their expectations or face the need to revise them depending on the influence of various factors. The features of labor conditions that potential employees pay attention to in newly changed conditions have been identified. These include the remuneration size, the possibility of working time rational organization and finding a balance between work time and rest time, the presence of the Diversity, Equity, Inclusion (DIE) concept in the organization environment. The tendencies of jobs creation and elimination in the labor market have been considered. The most rational ways of regulating the jobs number in accordance with the needs of the organization have been shown: job replacement – new high-tech jobs creation while eliminating obsolete existing ones. The skills of workers in high-tech positions that are most in demand from the employers’ point of view have been given. The main trends in the use of young specialists in the in-demand professions market have been considered.

The Relationship between Geographical Self-Efficacy and Academic Achievements in Geography: A Moderated Mediating Model

There are limited studies on the impact of domain-specific self-efficacy on academic achievements. The geospatial thinking ability is paramount to understand the relationship between geographical self-efficacy and academic achievements in geography. This study aims to explore the mediating effect of geospatial thinking on the relationship between geographical self-efficacy and academic achievements, and the moderating role of gender and attendance type. A total of 749 Chinese high school students, working as participants, anonymously completed a questionnaire covering topics like geographical spatial thinking, geographical self-efficacy, academic achievements in geography, gender, attendance type, and place of residence. The analysis using MPLUS 8.3 software indicates that geographical self-efficacy significantly predicts academic achievements in geography. Geospatial thinking plays a significant mediating role in this pathway, with gender and type of attendance having moderating effects. This study enhances the understanding between domain-specific self-efficacy and academic achievements, providing crucial guidance for educational practices, such as emphasizing geospatial thinking training for high school students, focusing on encouraging female students, and properly scheduling rest times for boarders, which will significantly contribute to the sustainable development of geography education.

Analysis of factors of Low Student Learning Interest in Grade IV Mathematics Subjects at Elementary School


 
 
 
 A study was conducted by researchers at SD Negeri 35 Palembang. The purpose of this study was to examine the various factors that cause students' lack of interest in learning in grade IV in mathematics. The researcher utilized a qualitative research method using a case study approach. Data collection was done through triangulation and inductive analysis, and emphasis on meaning rather than generalization in qualitative research results. Case study refers to a series of research activities carried out in a structured, detailed, and thorough manner regarding a program, event, or activity. The purpose of this case study is to understand in depth about it, both from the perspective of individuals, groups, institutions, and organizations. Generally, the case chosen is an ongoing event in real life, not something that has happened in the past. The process of collecting information is carried out through direct observation and interaction through interviews. Based on observations, interviews, and notes taken by the researcher, it was concluded that there were about five students in one class who received low scores and lacked interest in learning mathematics. Based on information found by researchers during observations and interviews, it can be concluded that there are several reasons why grade IV students' interest in learning mathematics at SD Negeri 35 Palembang is low. First, students do not have enough rest time. Second, students lack motivation to learn. Third, students do not show high interest in math. Fourth, students have to deal with two activities at once, namely school and boarding school. Finally, there is the influence of the post-Covid-19 situation or online learning.
 
 
 

Characterizing the Visual Cortex Function in Cognitive Task-Induced Mental Load: An Functional Magnetic Resonance Imaging Study.

Introduction: The mental load caused by simultaneous multitasking can affect visual information processing and reduce its ability. This study investigated the effect of mental load caused by cognitive tasks simultaneously with visual task on the number of active voxels in the visual cortex. Methods: This study recruited 22 individuals with a mean age of 24.72 ± 5.47 years. 3-Tesla functional magnetic resonance imaging (fMRI) was used to examine the functions of the visual cortex and amygdala region during three different task conditions: visual task alone, visual task with an auditory n-back task, and visual task with an arithmetic task. The visual stimuli consisted of Gabor patches with a contrast of 55% at spatial frequencies of 0.25, 4, and 9 cycles per degree (cpd). These were presented in three trials of eight blocks with a stimulation time of 12 sec and a rest time of 14 sec. Results: Activated brain voxels in the primary, secondary, and associated visual cortex areas were reduced in response to the mental load imposed by the n-back and arithmetic tasks. This reduction was greater for a spatial frequency of 0.25 cpd in the n-back task condition and spatial frequency of 9 cpd in the arithmetic task condition. In addition, the amygdala was stimulated in 2-back task and arithmetic task conditions. Conclusions: This study revealed a decline in the number of activated voxels of the visual cortex due to the mental load caused by simultaneous cognitive tasks, confirming the findings of previous psychophysical studies.

Bone cement reinforcement improves the therapeutic effects of screws in elderly patients with pelvic fragility factures

BackgroundPelvic fragility fractures in elderly individuals present significant challenges in orthopedic and geriatric medicine due to reduced bone density and increased frailty associated with aging.MethodsThis study involved 150 elderly patients with pelvic fragility fractures. The patients were divided into two groups, the observation group (Observation) and the control group (Control), using a random number table. Artificial intelligence, specifically the Tianji Orthopedic Robot, was employed for surgical assistance. The observation group received bone cement reinforcement along with screw fixation using the robotic system, while the control group received conventional screw fixation alone. Follow-up data were collected for one-year post-treatment.ResultsThe observation group exhibited significantly lower clinical healing time of fractures and reduced bed rest time compared to the control group. Additionally, the observation group experienced less postoperative pain at 1 and 3 months, indicating the benefits of bone cement reinforcement. Moreover, patients in the observation group demonstrated significantly better functional recovery at 1-, 3-, and 6-months post-surgery compared to the control group.ConclusionThe combination of bone cement reinforcement and robotic technology resulted in accelerated fracture healing, reduced bed rest time, and improved postoperative pain relief and functional recovery.

A ZTO-based memristor with tunable synaptic plasticity

It is an inevitable trend to use artificial neural networks based on neurons and synapses to deal with the bottleneck of von Neumann architectures, and memristor is one of the most potential artificial synapses. Here, Zinc oxide doped tin (ZTO), as a resistive material of memristor with a planar structure of Cu/ZTO/FTO, was prepared using sol-gel and spin-coating methods. Such devices exhibit stable resistive transition within scanning voltage 4 V. In particular, the device shows adjustable synaptic plasticity simulations, including the alternation between habituation and sensitization, which can be regulated by amplitude, rest time of stimulus pulse and the number of positive and negative pulse. Such remarkable plasticity performance of memristor based on ZTO might have promising applications for artificial synapse devices.

Physicochemical characteristics of pomegranate fruits as affected by foliar application of potassium and zinc

Foliar application of mineral nutrients can considerably improve fruit yield and quality. In this study, the effects of K and Zn application by spraying on leaf mineral contents, and some physical and biochemical characteristics of pomegranate fruits cv. ‘Malas Saveh’ were investigated. The mineral treatments were three concentrations of K2SO4 (0, 1, and 2%) and three concentrations of ZnSO4 (0, 0.5, and 1%). The solutions were applied in 2020–2021 and in four times: the first application was during the time of flowering and rest three applications were applied at two-week intervals. The results showed that leaves of trees fed with different concentrations of K2SO4 and ZnSO4 accumulated higher concentrations of N, P K, Zn, Fe, and Mn than those untreated. Pomegranate trees treated with the mineral treatments had higher chlorophyll a and total chlorophyll. Applying most mineral treatments, especially 2% K2SO4+0.5% ZnSO4, significantly increased the fruit yield, fruit diameter, fruit length, aril percentage, aril/skin, the weight of 100 arils, and juice content of 100 g arils, but reduced the cracking percentage, skin thickness, skin percentage and firmness of fruits. Moreover, fruits of pomegranate trees treated with the most mineral treatments and especially 2% K2SO4+0.5% ZnSO4, showed a greater level of TSS (total soluble solids), TSS/TA (total soluble solids/titratable acidity), anthocyanin, total phenol, flavonoid, antioxidant activity, and vitamin C, and a lower level of TA. The study results evidenced that K and Zn application by spraying has a high potential for improving fruit yield and quality of pomegranate.

Rheology and yield stress evolution of highly flowable cementitious grouting materials: Mechanisms and modeling

To study the rheological properties of grouting materials, the effects of sand-binder ratio, water-binder ratio, and rest time on the rheological model and parameters were studied through rheological tests. Through the cryo-scanning electron microscopy test to observe the structural build-up process of microstructures with rest time, the particle size test to measure the size distribution variation of flocculated structures over rest time, and the low-field nuclear magnetic resonance test to measure the change of water content in the slurry, the evolution mechanism of yield stress was studied. The results showed that the rheological model was consistent with Herschel–Bulkley model (H–B model). The yield stress increased with time. The growth of network flocculated structures and the decrease in the lubrication effect of water caused an increase in the aggregate particles–cement paste interaction stress. Therefore, the yield stress of the grouting materials increased over time. Considering the combined influences of the flocculation effect, hydration reaction, and the aggregate particles–cement paste interaction, a new evolution model was proposed to better describe the evolution law of yield stress with time. The results could provide a basis for the study on flow diffusion of grouting materials and an in-depth understanding of the time-dependent rheological properties of cement-based materials containing aggregate particles.