Major Physical Effects Research Articles

Prevalence of Urinary Incontinence and Coping Attitudes in Women With and Without Incontinence in Turkey

Aim: Coping strategies are thought to be important in dealing with a problem that affects women's well-being and quality of life, such as incontinence (UI). This study was done to investigate the incidence of UI and coping attitudes in women without and with UI in Turkey. 
 Material and Methods: The descriptive study was carried out with 417 women who were applied in a Healthy Life Center located in Turkey. The study data were obtained using the International Consultation on Incontinence Questionnaire (Short Form) (ICIQ-SF) and Coping Orientations to Problems Experienced (COPE). 
 Results: It was found that 34.8% of women had UI. It was determined that women used more common problem and emotion-focused coping attitudes” which are functional coping attitudes. It was found that women with UI used "withdrawal" which are problem-functional coping attitude "acceptance" which are emotion-functional coping attitude and "denial" and "behavioral disengagement" which are dysfunctional coping attitudes more than women without UI. 
 Conclusion: It was determined that one third of the women had UI and they used more common problem-and emotion-focused coping attitudes. Although urinary incontinence has a chance of being treated, it is a condition that has major physical, psychosocial and economic effects on society, and is often reported to the health institution by women, and treatment is delayed.

Isotopic study of rainfall and definition of local meteoric water lines: Case of the rainfall stations of the city of Bangui in Central African Republic

The study of the isotopic composition of rainwater discussed in this article allows isotopic characterization of rainfall recorded in the Bangui region over 11 years at two stations. It will highlight the relationships between isotopes, climatic parameters, and temporal variation before defining the local meteoric line, which constitutes the reference point for the region. The results obtained after a follow-up of eleven years without interruption showed two major physical effects, the effect of the rainfall influences more strongly the composition in isotopes, the contents in isotopes vary inversely with the precipitation. For example, heavy rainfall in August and September saw a strong depletion of δ¹⁸O and δ²H contents. These values reach up to -4.96‰ for δ¹⁸O and -28.3‰ for δ²H. Similar, although weaker, effects are observed for July and October precipitation. We also note that the isotope contents at the Bangui University station are lower than those measured at the Bangui Sodeca station located at 386 m altitude on the Lower Ubangi Hill, which is similar to a pseudo-altitude effect. The evolution of stable isotope content in water as a function of meteorological parameters (temperature, rainfall, altitude) has allowed us to determine a local meteorological line for the city of Bangui from two measuring stations defined as follows: δ2H = 7.6 × δ18O + 10.4 (R2 = 0.9909) Université de Bangui, δ2H = 8.4 × δ18O + 12.5 (R2 = 0.9909) Bangui-Sodeca and δ2H = 7.9 × δ18O + 11.3 (R2 = 0.9939) Bangui local meteoric water lines.

Cultural beliefs, attitudes and perceptions of lactating mothers on exclusive breastfeeding in The Gambia: an ethnographic study

BackgroundWHO/UNICEF recommends that women in resource-poor developing countries- like the Gambia, should exclusively breastfeed their infants for the first six months of their lives because of its health benefits to both mother and infant. The study aimed to explore the cultural beliefs, attitudes, and perceptions of lactating mothers towards exclusive breastfeeding in The Gambia.MethodsThis was a qualitative ethnographic study of culture-sharing groups of mothers with infants 4 to 6 months old. The study was conducted from July to October 2014 and data collection was done through a face-to-face, in-depth interview and moderate participant observation. The study recruited 22 breastfeeding mothers attending government health facilities in the Kanifing Municipality. The collected data were transcribed verbatim and analyzed through a constant comparison method generating six cultural themes, each with sub-themes.ResultsBaby’s welfare is traditionally based on the types of food mother’s eat. To this end, mothers reportedly shunned eating green leafy vegetables, liquid and hot foods for their infants’ wellbeing. Encounters such as weight loss, nipple inflammation, and backache, which mothers associated with hyper latching and sitting for prolonged breastfeeding, respectively, were among major undesirable physical effects revealed by the participants. Furthermore, the necessity of giving water to infants for their survival was illustrated as a barricade to exclusive breastfeeding practices. Likewise, the entrenched practice of giving charm water to instill the Islamic faith and shielding infants against evil spirits was another factor influencing exclusive breastfeeding practices. Finally, the belief that breast milk adequacy is based on breast size and nurturing men’s physical strength by starting prelacteal feeds early in infancy also contributes to the meek exclusive breastfeeding rate among mothers.ConclusionThis study could be a gazette piece for effective policy making and enhance nurses’ cultural sensitivity while caring for lactating mothers. Cultural meanings of health care behaviors in lactating mothers challenge universally applying guidelines of exclusive breastfeeding to all societies. The study findings could benefit healthcare providers in informing policies and designing culturally adaptive and acceptable community-based breastfeeding intervention programs in resource-limited settings.

The Effects of Childhood Abuse and Neglect on Anxiety, Anxiety Sensitivity and Academic Success: A University Sample

AbstractObjective: Child abuse and neglect which are the leading problems all over the world can cause major physical and mental effects. This study was conducted to investigate the effects of childhood abuse and neglect on anxiety symptoms, anxiety sensitivity and academic success in young adults.Material and Methods: This descriptive study was conducted with 301 volunteer participants aged between 17 and 24 and studying in the first year of university. ISPCAN Child Abuse Screening Tools (ICAST-R), Beck Anxiety Scale and Anxiety Sensitivity Index-3 forms were answered by the students who agreed to participate in the study and the students were asked to indicate the University Entrance Exams score. The data were statistically evaluated in theSPSS 22.0 database.Results: Of the 301 students 39.20% who participated in the study were exposed to abuse at least once before the age of 18 years. The most common types of exploitation was emotional abuse. The mean of the total score of the students taken from the Beck Anxiety Scale was 15.55±11.58 and it was found that there was a statistically significant relationship between anxiety levels and abuse status (p<0.001). It was found that there was a statistically significant relationshipbetween exploitation and anxiety sensitivity levels also (p<0.001). There was a statistically significant relationship between a history of abuse and university entrance exams success (p<0.001).Conclusion: According to findings in our study, being abused and neglected have strong influences on anxiety, anxiety sensitivity, and university untrance uxams score. The results were highly parallel to other studies with young adults. The psychiatric and sociological consequences of child abuse and neglect in the future can be protected with a multidisciplinary approach and adequate rehabilitation can be provided.

Investigating the effects of polymer plugging mechanism of liquid production decrease and improvement by the cross-linked gel performance

Polymer flooding, as the most successful and well-known chemical EOR method was broadly applied around the world. Mostly, contrasted with Waterflooding, the production rate decrease during polymer flooding is smaller based on field application. Nevertheless, the production liquid rate decreased critically in the middle phase to late phase due to plugging, which could lead the way to poor flooding performance and fewer cumulative oil. In this work, first, we approached the affecting polymer plugging mechanism model on liquid production decrease to investigate the parameters such as; solid-phase concentration (SOLIDMIN), reacting frequency factor (FREQFAC) and others affecting components are all investigated consecutively. Secondly the model approached by cross-linked gel for the improvement of production liquid rate. The physical work was designed by a physical model, and then the polymer adsorption that generating blockage emerging in permeability diminish assessed by a mathematical model. The outcomes specify that the existence of this debris, excessive assemblage of solid-phase and the excessive reactant frequency factor has major mechanical and physical parameters effects on the reservoir throughout polymer flooding. Polymer flood model base case liquid ratio loss is 11.15 m3/day between the years 2014-08-01 to 2020-03-04. Comparing with the polymer flood model case 1, liquid ratio loss ranging to 1.97 m3/day between the years 2014-08-02 to 2020-03-03. While the oil ratio loss of the polymer flood base case model between the years 2015-07-08 to 2020-03-04 attained 12.4 m3/day contrasting with the polymer flood model case 1 oil ratio increase to 0.37 m3/day between the years 2014-08-04 to 2019-04-02. The cross-linked gel model base case liquid ratio loss is 2.09 m3/day between the years 2015-01-02 to 2020-02-03, while the oil ratio lost reached 9.15 m3/day between the years 2015-09-01 to 2020-02-03. Contrasting with the cross-linked gel model case 2 liquid ratio recovered from the loss and attained 25.43 m3/day in the year 2020-12-01, while the oil ratio is reached 15.22 m3/day in the year 2020-12-01. Polymer flood model examined through cross-linked gel model performed reliable outcomes by taking out the plugging, which also occasioned the reservoir production rate to decrease. With the application of cross-linked gel the affected parameters and the production rate have achieved an improvement.

ЕВОЛЮЦІЯ ЕЛЕКТРОМАГНІТНИХ РЕЙКОВИХ ПРИСКОРЮВАЧІВ

In the present article, the analytical overview of the worldwide modern approaches to the development of electromagnetic railguns (RG) was carried out. The major physical effects in the RG were analyzed, and the corresponding ways of increasing the RGs efficiency were showed up. Considering the wide range of the proposed ER configurations, their generalization and comparative analysis is highly needed. Thus, the comparison of the most advanced configurations of the ER - conventional RG, augmented, multi-turn, and multistage segmented RG was carried out. Finally, the variation of the multistage segmented RG, proposed by authors, has been described. This type of ER allows for the sufficient decrement of the ERs resistance by splitting the rails on mutually insulated segments, and commutating those segments without additional control equipment, but only by synchronized movement of the armature. References 15, figures 8.

An investigation on major physical hazard exposures and health effects of forestry vehicle operators performing wood logging processes

Forest vehicle operators are occupationally exposed to combined hazards such as noise, whole-body vibration(WBV), adverse microclimate, and carbon monoxide. Such combined exposures may not only increase the risk of accidents but they may also have some synergized effects on the developments of major occupational diseases of the workers, which have been among the major concerns of the occupational safety and health for the forestry sector in Romania. This study investigated the combined exposures through measuring and analyzing the equivalent acoustic level LAeq (dB(A)), whole-body vibration (A(8)-value), working microclimate, and carbon monoxide inside the worker's cabin in the breathable area. The vehicles considered in this study included skidding vehicles dedicated to wood exploitation (type I) and agricultural tractors modified for logging (type II). The cumulative distribution function of each types of exposure was calculated in the analyses. This study found that the noise and WBV exposures had large probabilities of exceeding the permissible limits: for noise, 75% for vehicle type I, and 55% for vehicle type II; for the WBV, 63% for type I vehicles, and 72% for type II vehicles. The measured data suggest that the microclimate and carbon monoxide exposures were within their limits in the process of collecting wood. This study also found that 27% of workers participated in the study were detected with occupational diseases. Based on these findings, some intervention methods were recommended to control the exposures and health effects.

All Roads Lead to Directional Cell Migration.

Directional cell migration normally relies on a variety of external signals, such as chemical, mechanical, or electrical, which instruct cells in which direction to move. Many of the major molecular and physical effects derived from these cues are now understood, leading to questions about whether directional cell migration is alike or distinct under these different signals, and how cells might be directed by multiple simultaneous cues, which would be expected in complex in vivo environments. In this review, we compare how different stimuli are spatially distributed, often as gradients, to direct cell movement and the mechanisms by which they steer cells. A comparison of the downstream effectors of directional cues suggests that different external signals regulate a common set of components: small GTPases and the actin cytoskeleton, which implies that the mechanisms downstream of different signals are likely to be closely related and underlies the idea that cell migration operates by a common set of physical principles, irrespective of the input.

Brillouin optomechanics in nanophotonic structures

The interaction between light and mesoscopic mechanical degrees of freedom has been investigated under various perspectives, from spectroscopy in condensed matter, optical tweezer particle trapping, and long-haul optical fiber communication system penalties to gravitational-wave detector noise. In the context of integrated photonics, two topics with dissimilar origins—cavity optomechanics and guided wave Brillouin scattering—are rooted in the manipulation and control of the energy exchange between trapped light and mechanical modes. In this tutorial, we explore the impact of optical and mechanical subwavelength confinement on the interaction among these waves, coined as Brillouin optomechanics. At this spatial scale, optical and mechanical fields are fully vectorial and the common intuition that more intense fields lead to stronger interaction may fail. Here, we provide a thorough discussion on how the two major physical effects responsible for the Brillouin interaction—photoelastic and moving-boundary effects—interplay to foster exciting possibilities in this field. In order to stimulate beginners into this growing research field, this tutorial is accompanied by all the discussed simulation material based on a widespread commercial finite-element solver.

Negative Ion Formation in Low-Energy Electron Collisions with the Actinide Atoms Th, Pa, U, Np and Pu

Here we investigate ground and metastable negative ion formation in low-energy electron collisions with the actinide atoms Th, Pa, U, Np and Pu through the elastic total cross sections (TCSs) calculations. For these atoms, the presence of two or more open d- and f- subshell electrons presents a formidable computational task for conventional theoretical methods, making it difficult to interpret the calculated results. Our robust Regge pole methodology which embeds the crucial electron correlations and the vital core-polarization interaction is used for the calculations. These are the major physical effects mostly responsible for stable negative ion formation in low-energy electron scattering from complex heavy systems. We find that the TCSs are characterized generally by Ramsauer-Townsend minima, shape resonances and dramatically sharp resonances manifesting ground and metastable negative ion formation during the collisions. The extracted from the ground states TCSs anionic binding energies (BEs) are found to be 3.09eV, 2.98eV, 3.03eV, 3.06eV and 3.25eV for Th, Pa, U, Np and Pu, respectively. Interestingly, an additional polarization-induced metastable TCS with anionic BE value of 1.22eV is generated in Pu due to the size effect. We also found that our excited states anionic BEs for several of these atoms compare well with the existing theoretical electron affinities including those calculated using the relativistic configuration-interaction method. We conclude that the existing theoretical calculations tend to identify incorrectly the BEs of the resultant excited anionic states with the electron affinities of the investigated actinide atoms; this demonstrates the great need for experimental verification and unambiguous determination of their electron affinities.

Design for reliability of generic sensor interface circuits

Numerous applications require the use of robust and reliable integrated circuits. In order to develop such circuits, a wide variety of influences need to be considered and also compensated if necessary. For a complete consideration of all reliability issues, the circuit has to be investigated on different levels of abstraction and together with the complete overlying system. These requirements are addressed in this work by using cross-layer design methods for the development of a generic sensor interface as an example for a complex integrated circuit. During the development, a reliability-aware design is used and major physical effects are taken into account, which alter the overall behavior of the system. Furthermore, modeling techniques are applied to port influences and circuit components from one level of abstraction to another. Possible countermeasures and compensation techniques for a reliable circuit design are also analyzed on transistor and system level. The result is a sensor interface circuit, which can be used to investigate all effects of interest and suitable countermeasures on different abstraction levels.

A national hazard analysis and mapping for seveso establishments

On 23 February 2009, the European Commission adopted a Communication on a Community approach on the prevention of natural and man-made disasters setting out an overall disaster prevention framework and proposing measures to minimize the impacts of disasters. All EU Member States were asked to develop national approaches and procedures to risk management including risk analyses, covering the potential major natural and manmade disasters, taking into account the future impact of climate change. Based on the European Commission guidelines, Romania is currently developing a national approach to risk assessment by taking into account nine major risk categories: floods, droughts, forest fires, earthquakes, mass displacement, Seveso industrial accidents, transport accidents involving hazardous materials, nuclear accidents, and epidemics/zoonoses. This paper will address the difficulties of hazard analyses and technological hazard mapping on a local, regional and national scale for all Seveso establishments. By using REHRA (Rapid Environment and Health Risk Assessment) as the basis for hazard analysis, all Seveso sites will receive a hazard index. By undergoing analysis for major physical effects, each site will go through a worst case scenario simulation of a major technological accident using modeling software. Using G.I.S. software, all spatial data collected from these establishments will be transferred to a WebGIS database. All spatial data will be expressed in a unitary standard according to the INSPIRE Directive which regulates natural risk zones. The resulting technological hazard map will be overlapped to the other hazard maps, thus creating a national hazard map and a starting point for the further national risk assessment

Aging studies on micro-fabricated alkali buffer-gas cells for miniature atomic clocks

We report an aging study on micro-fabricated alkali vapor cells using neon as a buffer gas. An experimental atomic clock setup is used to measure the cell's intrinsic frequency, by recording the clock frequency shift at different light intensities and extrapolating to zero intensity. We find a drift of the cell's intrinsic frequency of (−5.2 ± 0.6) × 10−11/day and quantify deterministic variations in sources of clock frequency shifts due to the major physical effects to identify the most probable cause of the drift. The measured drift is one order of magnitude stronger than the total frequency variations expected from clock parameter variations and corresponds to a slow reduction of buffer gas pressure inside the cell, which is compatible with the hypothesis of loss of Ne gas from the cell due to its permeation through the cell windows. A negative drift on the intrinsic cell frequency is reproducible for another cell of the same type. Based on the Ne permeation model and the measured cell frequency drift, we determine the permeation constant of Ne through borosilicate glass as (5.7 ± 0.7) × 10−22 m2 s−1 Pa−1 at 81 °C. We propose this method based on frequency metrology in an alkali vapor cell atomic clock setup based on coherent population trapping for measuring permeation constants of inert gases.

Calculation of particle dynamics in the nonradiative model of plasma

The work discusses the implicit difference scheme for the equations of particle motion accounting for peculiarities of the Darwin approximation of plasma. The aspects of its consistency, accuracy, and stability are investigated, and the adequacy of conveying major physical effects, related to the motion of charges in an electromagnetic field, is demonstrated. On the basis of the scheme, an optimal numerical algorithm is proposed and its efficiency is considered.

The Psychoactive Effects of Antidepressants and their Association with Suicidality

Although antidepressants are known to produce some adverse mental effects, their full range of psychoactive effects has not been systematically described. It has been suggested that some antidepressants are associated with increased suicidal thoughts and actions, but the issue remains controversial, and the mechanism of association, if any, is unclear. In the current study we examined descriptions of the major psychoactive and physical effects experienced by users of two commonly used antidepressants, fluoxetine and venlafaxine, as reported on a patient-oriented web site. We categorised responses into common psychoactive effects and explored associations among those effects, including reported increases in suicidal ideation. In the 468 descriptions we examined, the most commonly reported drug-induced psychoactive effects were sedation, impaired cognition, reduced libido, emotional blunting, activation (feelings of arousal, insomnia and agitation) and emotional instability. There were no differences between the two drugs in the prevalence of reporting of these effects. Activation effects were associated with involuntary movements, suggesting a physical basis. Emotional blunting was associated with cognitive impairment, reduced libido and sedation. Emotional instability, which included the reported side effects of increased anxiety, anger, aggression and mood swings, was related to activation effects and was more commonly reported by younger respondents. Increased suicidal thoughts were rare but were associated with both types of emotional effect. The effects identified are consistent with other data, and suggest that some antidepressants may induce emotional effects that are experienced as unpleasant, may impact on the symptoms of mental disorders, and may account for the suggested occurrence of increased suicidal impulses in some users.

Changes in the thermal stability of Lake Simcoe from 1980 to 2008

Climate change is anticipated to have major physical and biological effects on aquatic ecosystems. Changes to the thermal regime of lakes such as shorter duration of ice-cover, earlier onset of stratification and an increase in the length of the stratified period have already been observed in some lakes in North America and Europe. Using vertical temperature profiles of Lake Simcoe during the open-water period from 1980 to 2008 we evaluated trends in water column stability, the onset of stratification and the timing of fall turnover at three stations situated in the lake's two bays and its main basin. Dramatic changes were observed at the three stations; each stratified earlier in the spring, mixed later in the fall and remained stratified for more than a month longer in 2008 compared to 1980. Long-term monotonic trends in the timing of the onset of thermal stratification, fall mixing and duration of stratification were significant. These trends resulted from changes in water column density that are strongly correlated with increasing average air temperatures over time, indicating that climate warming has had a significant effect on the thermal regime of Lake Simcoe.

Partially Premixed Turbulent Combustion Model Based on Joint Statistics of Progress Variable, Mixture Fraction, and Scalar Dissipation Rate

The authors use a probability density function method in which a transport equation for thejoint probability density function of velocity, turbulence frequency, progress variable, mixture fraction, and enthalpy was solved. Based on a new combustion model, this information was used to obtain the joint statistics of the compositions. The extinction and reignition of fluid particles is controlled by a particle progress variable and its scalar dissipation rate. Precomputed flamelets are only employed for particles in the flammable mixture fraction range. Outside of this range, the particle enthalpy is evolved by a mixing model (similar to the mixture fraction). Numerical test cases of lifted turbulent diffusion flames with a considerable amount of local extinction show the ability of the model to account for the major physical effects and comparisons with experimental data show good agreement.

Les variables associées à la décision d’hospitalisation

The psychiatric assessment conducted in a psychiatric emergency service and the subsequent admission decisions have major psychological, physical and fiscal effects on patients, families and the community. Despite the importance of the task, there is no agreement on the areas of clinical assessment the psychiatric emergency service should focus on. The purpose of this study was to identify important variables that influence admission decisions in psychiatric emergency services in order to provide information facilitating the development of assessment guidelines for use in the psychiatric emergency services. Residents at the psychiatric emergency service rated prospectively 326 patients (sex ratio: 1.91, mean age: 34.55 years (S.D. = 11.68), unemployment: 74.5%, low educational level: 60.7%; low socioeconomic level: 77.9%, married: 29.4%, rural residence: 51.8%, of the 326 patients, 218 (66.9 %) were hospitalized) on 12 clinical and demographic variables, including gender, marital status, socioeconomic level, unemployment, danger to self, danger to others, referred to by psychiatric physicians, self referred, psychotic signs, current diagnostic of major mental illness, involuntary consultation, and previous hospitalisation. First, a chi square analyse was conducted on the 12 variables to determine whether they significantly differentiated patients admitted from those released. A p value below 0.05 was used. Next, a binary logistic regression procedure was employed to develop a model for an admission depending on five variables. The SPSS software program was used for these analyses. The model's performance was evaluated in two ways: the proportion of cases correctly classified and the level of signification of the Hosmer–Lemeshow test. A logistic regression produced a model with five variables that significantly predicted admission, in order of importance they were danger to self, psychotic signs, current diagnostic of major mental illness, involuntary consultation, and danger to others. The model correctly classified 93.9 percent of the cases. The level of signification of the Hosmer–Lemeshow test was 0,724 (chi-square = 5.307, ddl = 8). A review of results of similar studies in other populations shows that these findings are supported in the literature. As a result, these five variables should be included in admission Guidelines for emergency psychiatric services staff. In this study, the admission decisions were usually justified.

Major physical and psychological harms of methamphetamine use

The major physical and psychological health effects of methamphetamine use, and the factors associated with such harms. Comprehensive review. Physical harms reviewed included toxicity and mortality, cardiovascular/cerebrovascular pathology, dependence and blood-borne virus transmission. Psychological harms include methamphetamine psychosis, depression, suicide, anxiety and violent behaviours. While high-profile health consequences, such as psychosis, are given prominence in the public debate, the negative sequelae extend far beyond this. This is a drug class that causes serious heart disease, has serious dependence liability and high rates of suicidal behaviours. The current public image of methamphetamine does not portray adequately the extensive, and in many cases insidious, harms caused.

Towards a unifying heat transfer correlation for the entire boiling curve

The mechanistic understanding of boiling processes is still inadequate. Major physical effects determining the heat transfer in high heat flux nucleate and transition boiling regions have not yet been captured adequately. Thus, existing design correlations are often valid only for one of the boiling regimes. In this paper, the wetting structure close to the boiling surface is identified using the experimental data from an optical probe, obtained during pool boiling of FC-72 on a horizontal surface, together with a mathematical model for the interfacial geometry based on two-phase flow averaging theory. In the same framework, a unifying correlation to describe the heat flux along the entire boiling curve is presented. The suggested correlation is based on the same physical quantities regardless of the boiling regime; it employs only a single fitting parameter in its most simple form. Alternative correlations are compared to the suggested correlation and their relative merit is assessed by statistical model discrimination techniques. The results suggest that transfer phenomena associated with the interfacial evolution, in particular the volumetric presence of interface close to the heater surface, together with the superheat, play an important role for the overall boiling heat transfer mechanism.