167 research outputs found
Does a brief mindfulness intervention counteract the detrimental effects of ego-depletion in basketball free throw under pressure?
Research has shown that a brief mindfulness intervention may counteract the depleting effects of an emotion suppression task upon a subsequent psychological task that requires self-control. However, the effects of a brief mindfulness intervention on perceptual–motor tasks particularly in stressful situations have not yet been examined. The purpose of this study was to investigate whether a brief mindfulness intervention can counteract the detrimental effects of ego-depletion in basketball free throw performance under pressure. Seventy-two basketball players (mean age = 28.6 ± 4.0 yrs) were randomly assigned to one of the following 4 groups: depletion/mindfulness, no depletion/mindfulness, depletion/no mindfulness and control (no depletion/no mindfulness). The mindfulness intervention consisted of a 15-min breathe and body mindfulness audio exercise, while the control condition (no mindfulness) listened to an audio book. A modified Stroop color-word task was used to manipulate self–control and induce ego depletion. Participants performed 30 free throws before and after the experimental manipulations. Results showed that basketball players’ free throw performance decreased after ego-depletion, but when ego-depletion was followed by the mindfulness intervention, free throw performance was maintained at a level similar to the control group. Our results indicate that a brief mindfulness intervention mitigates the effects of ego depletion in a basketball free-throw task
Psycological Impact Of COVID-19 Pandemic On Dental Student: A Cross-Sectional Pilot Study
Background and purpose: The covid-19 disease is widely spreading worldwide and has adversely impacted mental health in society, especially among the medical staff. In addition to the stresses related to the outbreak of covid-19, the suspension of in-person classes, undertaking electronic online learning, and concerns about achieving clinical skills cause increasing anxiety and stress in dental students, which might be related to increased mental health problems. Thus, the present study examined dental students’ levels of stress, anxiety, and depression in Shahrekord during the covid-19 pandemic.
Methods: In this cross-sectional study, 110 dental students completed the questionnaires of demographic data and depression, anxiety, and stress scale (DASS-21) in 2021. The data were analyzed with SPSS.
Results: In the DASS-21 questionnaire, the rate of depression was 57%, anxiety 76%, and stress 33%. The total score of the DASS-21 questionnaire was significantly different between the two genders (P<0.05), and the mean score of females was significantly higher than males.
Conclusion: The prevalence of depression and anxiety in dental students, especially females, was high during the covid-19 pandemic
Comparing of retention of cast crowns cemented with two kind of permanent cement with and without prier use of temporary cement
Introduction: This study evaluated the effects of eugenol –free temporary cement remnants on the
retentive strength of casting crowns luted via zinc phosphate and resin cement (Maxcem) to the
tooth structure.
Material and methods: 40 extracted human molars ware randomly divided into 2 groups. each
group was then divided into 2 subgroups and the teeth were paired so that the size of each tooth in
each subgroup was the same as a tooth in the other subgroups. 40 standardized Ni-cr complete
crowns were made on teeth prepared with a milling machine using conventional laboratory
techniques. For each adhesive system, in one subgroups a provisional restoration was cemented
using an eugenol –free temporary cement. Temporary crown was remained on the tooth structure
for an hour and then extracted and cement remnant was removed by an excavator. Then the casing
crowns were adhesively luted via zinc phosphate, adhesive resin(Maxcem) to prepared teeth. After
24h storage in distilled water, Retention was evaluated by measuring the tensile force required to
dislodge the crowns from tooth preparations with a universal testing machine after thermo cycling
(1500 cycles between 5c and 55c with 1- minute dwell times). The data were analyzed by means of
paired T-test and wilcoxon test in SPSS software version 11.5
Results: The analysis showed the mean retentive strength for 2 subgroups with and without prior
use of temporary cement in the maxcem group was 176 ± 55 and 274 ± 169 N, there was not a
significant difference between the 2 subgroups. (p value = 0.174). And the mean retentive strength
for 2 subgroups with and without prior use of temporary cement in the zincphosphate group was
257 ± 125 and 238 ± 135 N, there was not significan t difference between the 2 subgroups (p value
= 0.782).
Discussion: The use of an eugenol –free temporary cement does not alter the retentive strength of
casting restorations lutted to prepared teeth using the tested adhesive system, when temporary
cements are removed properly
Sustainability indicators of Iran's developmental plans : application of the sustainability compass theory
The main purpose of this study was to analyze Iran's developmental plans in order to examine and compare their direction and conformity with the sustainable development theory via the compass of sustainability. The approach involves a content analysis used in line with qualitative research methodologies. The results indicated that, in the first developmental plans, there was no direct reference to sustainable development. In the second to fifth plans, the main focus was on the social, environmental, and economic dimensions of development; which were common elements seen in the policies of all the plans. An analysis of the fourth plan revealed that expressions related to sustainable development appeared more frequently, indicating a stronger emphasis on sustainable development by decision-makers
Porównanie częstości występowania zakażeń Chlamydia u pacjentek z ciążą ektopową i bez, przy użyciu metody PCR
Cel pracy: Cel pracy: Uszkodzenie jajowodu po przebyciu choroby przenoszonej drogą płciową, takiej jak infekcja Chlamydia trachomatis jest istotnym czynnikiem ryzyka ciąży ektopowej (EP). Celem pracy była ocena częstości występowania zakażenia C. trachomatis u pacjentek z ciążą ektopową w południowo-wschodniej części Iranu. Materiał i metoda: Reakcję łańcuchowej polimerazy (PCR) w celu wykrycia DNA Chlamydii przeprowadzono na tkance jajowodu pobranego od 42 pacjentek z ciążą ektopową (grupa EP) i od 87 pacjentek bez ciąży ekotopowej (grupa kontrolna) w trakcie podwiązania jajowodów. Ten sam protokół przeprowadzono z próbkami moczu pobranymi od mężów pacjentek obu grup. Wyniki: Z całej grupy badanej, 5 pacjentek z ciążą ektopową miało pozytywny wynik badania PCR na obecność C.trachomatis, żadna pacjentka z grupy kontrolnej nie miała pozytywnego wyniku (
The relationship between emotional intelligence and addiction potential tendency pre-university students
Background and aims: Unfavorable emotional growth in adults may lead to addiction. This study investigated the relationship between emotional intelligence and students’ potential talent pertaining to addiction. Methods: This study is a descriptive analytical study. All male students of pre-universities in Shahrekord city participated in this study One hundred and twelve participnts were chosen based on the stage cluster sampling. In order to collect data emotional intelligence questionnaire and addictive potential survey (APS) were used. Data were analyzed based on Pearson and regression correlation. Results: The results Showed that there is a negative significant relationship among the emotional intelligence (P<0.05, r=-0.37), emotional save order (P<0.01 r=-0.63, P<0.01 r=-0.60) and emotional usability (P<0.01 r=-0.51, P<0.01 r=-0.49) in students resident in city and in rural area respectively and addiction vulnerability. Emotional intelligence and emotional save order components have the potential to predict the addiction tendency (P<0.01). Conclusion: Lack of emotional intelligence is one of the major factors that affect drug using tendency in students. Therefore, training is necessary for students
Signature of Non-Minimal Scalar-Gravity Coupling with an Early Matter Domination on the Power Spectrum of Gravitational Waves
The signal strength of primordial gravitational waves experiencing an epoch
of early scalar domination is reduced with respect to radiation domination. In
this paper, we demonstrate that the specific pattern of this reduction is
sensitive to the coupling between the dominant field and gravity. When this
coupling is zero, the impact of early matter domination on gravitational waves
is solely attributed to the alteration of the Hubble parameter and the scale
factor. In the presence of non-zero couplings, on the other hand, the evolution
of primordial gravitational waves is directly affected as well, resulting in a
distinct step-like feature in the power spectrum of the gravitational wave as a
function of frequency. This feature serves as a smoking gun signature of this
model. In this paper, we provide an analytical expression of the power spectrum
that illustrates the dependence of power spectrum on model parameters and
initial conditions. Furthermore, we provide analytical relations that specify
the frequency interval in which the step occurs. We compare the analytical
estimates with numerical analysis and show they match well.Comment: 19 pages, 7 figures, 1 table, and 2 appendice
Influence of temporal variation on morphology and architecture in burrows of Ocypode Rotundata (Miers, 1882) on Salakh beach of Qeshm Island, the Persian Gulf
Variability over time in morphology and architecture of burrows excavated by Ocypode rotundata was studied on Salakh beach, Qeshm Island, Persian Gulf. According to our results, O. rotundata excavated single Shafts, J-shaped, Y-shaped, spiral and complex burrows, with spiral and complex burrows occurring only in adult crabs. The results showed that mating and reproduction behaviour of O. rotundata mainly occurred in the upper foreshore zone. Based on carapace width data and sex, percentage of J-shaped and Y-shaped burrow were more in female young crabs compared to males. Whilst, percentage of constructed single Shaft, J-shaped burrows were more frequent in male adult crabs compared to females. On the other hand, created complex burrow was observed just in male adult crabs. Also, male crabs created sand pyramid mounds seaward in front of the burrows. Four types of sand disposal behaviour were observed: knocking, throwing, slamming (only males) and stacking (only males). Results indicated that O. rotundata constructed burrows with any shape in all types of sediment, from the backshore to the foreshore. Sand moisture decreased with distance from the sea, which was associated with an increase in burrow depth. Temporal variation had significant impact on burrow slope, so that the entrance branch of all burrow shapes was clearly steeper during the reproduction period in contrast to the same burrows created in the non-reproduction period.Universidade de Vigo/CISU
Prediction of domestic violence according to cognitive emotion regulation and early maladaptive schemas of couples
Background: Domestic violence causes the family institution to turn into a tense, stressful, cold and soulless environment. The current study was handled to the aim of predicting domestic violence according to cognitive emotion regulation (CER) and early maladaptive schemas (EMS) in couples.
Methods: The present study was a descriptive correlational Research, which was carried out on couples with domestic violence problems referring to counseling centers in Tehran, 2021. The number of 400 people was selected as samples through convenience sampling among those who were referred to counseling centers. The research tools included the questionnaire of Haj-Yahia violence against women, Garfenski et al.'s cognitive regulation of emotion, and Young's early maladaptive schemas. Data analysis was done using SPSS 21 software, Pearson's correlation coefficient and analysis of regression.
Results: The findings revealed that domestic violence has a significant and inverse correlation with CER, and a direct and significant correlation with EMSs (P < 0.001). Domestic violence was predictable based on CER (B = -0.411, P = 0.001) and EMSs (B =0.372, P = 0.001).
Conclusion: According to the results, CER and EMSs were able to reduce and increase domestic violence in couples, respectively. It is suggested to pay attention to the CER and EMSs of couples and supply the required teaching in this regard
Effect of anti-inflammatory drug (Piroxicam) on the development of fatty streak and biochemical factors in cholesterol-fed rabbits
زمینه و هدف: با توجه به اینکه هنوز علت اصلی مرگ و میر در اکثر نقاط دنیا بیماریهای قلبی- عروقی است، پیشگیری و درمان این بیماریها با توجه به مکانیسم های جدید ارائه شده قابل توجه است. این پروژه با تکیه بر مکانیسم جدید بیماریهای عروقی مبنی بر یک بیماری التهابی در صدد یافتن ترکیبات خاص در پیشگیری از تشکیل و پیشرفت رگه های چربی (fatty streak) در آترواسکلروز بوده است. روش مطالعه: در یک مطالعه مداخله ای 20 خرگوش نر به مدت 14 هفته مورد بررسی قرار گرفتند. خرگوشها بصورت انتخابی در 4 گروه 5 تایی تقسیم شدند و همه این گروهها در ابتدا به مدت2 هفته تحت رژیم پایه قرار گرفتند. سپس، گروه اول تا پایان دوره تحت رژیم استاندارد، گروه دوم علاوه بر رژیم استاندارد، روزانه mg6 پیروکسیکام تزریقی دریافت کردند، گروه سوم تحت رژیم پرکلسترول و گروه چهارم علاوه بر رژیم پرکلسترول روزانه mg6 پیروکسیـــکام تزریقی دریافت کردند. در طـــی این دوره در دو نوبت (بعد از رژیم پایه و در پایـــان دوره) از خرگوشها جهت آزمایشات بیوشیمیـــایی مختلف از جمله کلسترول تام، لیپوپروتئین با دانسیته پائین (LDL)، لیپوپروتئین با دانسیتـــه بالا (HDL)، مالون دی آلدئید، قند خون ناشتا (FBS)، CRP (C-Reactive protein) کمی، تری گلیسیرید و ظرفیت آنتی اکسیدان خونگیری به عمل آمد. در پایان پس از اتوپسی، نمونه آئورت و کرونرهای راست و چپ مورد بررسی پاتولوژی قرار گرفت. نتایج: رژیم پرکلسترول در مقایسه با رژیم استاندارد باعث ایجاد fatty streakدر عروق کرونر و آئورت شد (0001/0
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