141 research outputs found

    Artifacts in Optical Coherence Tomography Angiography

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    We performed a comprehensive search of the published literature in PubMed and Google Scholar to identify types, prevalence, etiology, clinical impact, and current methods for correction of various artifacts in optical coherence tomography angiography (OCTA) images. We found that the prevalence of OCTA image artifacts is fairly high. Artifacts associated with eye motion, misidentification of retinal layers, projections, and low optical coherence tomography signal are the most prevalent types. Artifacts in OCTA images are the major limitations of this diagnostic modality in clinical practice and identification of these artifacts and measures to mitigate them are essential for correct diagnosis and follow-up of patients

    Prediction of Optimum Gas Mixture for Highest SXR Intensity Emitted by A 4kj Plasma Focus Device Using Artificial Neural Network

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    In this study, artificial neural network (ANN) is investigated to predict the optimum gas mixture for highest soft X-ray (SXR) intensity emitted by a 4kJ plasma focus device. To do this multi-layer perceptron (MLP) neural network is used for developing the ANN model in MATLAB 7.0.4 software. In this model, the input parameters are voltage, Percentage of nitrogen in admixture and pressure and the output is SXR intensity. The obtained results show that the proposed ANN model has achieved good agreement with the experimental data and has a small error between the estimated and experimental values. Therefore, this model is a useful, reliable, fast and cheap tool to predict the optimum gas mixture for highest SXR intensity emitted by plasma focus devices

    FASAKH NIKAH DENGAN ALASAN SUAMI MISKIN (Studi Perbandingan antara Ulama Syafi’iyyah dan Hukum Positif di Indonesia)

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    In a family sometimes painful actions arise from involuntary causes (not intentionally), not on the wishes of the husband, such as because the husband is poor or poor so he does not have a living to fulfill his wife's rights in the form of food, clothing and home at a certain time, which makes the wife ask to part with her husband through the divorce (fasakh) path. Regarding the problem of the wife asking for fasakh (carrying out divorce) by reason of a poor husband there are differences of opinion between the Syafi'iyyah Ulama and Positive Law in Indonesia concerning the provisions that must be fulfilled by both. This study wants to answer the question of how the provisions of fasakh marriage are based on the reasons of poor husbands according to Syafi'iyyah Ulama and Positive Law in Indonesia. To get answers, the author uses primary data sources and secondary data. The research method that I use is Descriptive Comparative method that is research by analyzing and comparing opinions, reasons and interpretations of the arguments used as the opinions of the two groups. The results of the study indicate that the fasakh of marriage on the grounds of a poor husband according to the Shafi'iyyah Ulama is permissible and validly carried out on condition; 1) A wife who is married between being patient and divorced, 2) Judge's decision, in the form of; a. determination of poor status according to the provisions, b. giving an opportunity to a husband to work for a living, c. Fasakh implementation period three days after the wife reported. 3) Separated by reciting fasakh instead of divorce, and still having three times the right of divorce if in the future you want to remarry with a new contract. Whereas according to Positive Law in Indonesia fasakh marriage by reason of poor and permissible husband with conditions, 1) occur shikak between wife and husband, 2) wife make a divorce letter, 3) Decision judge namely proof of poor husband in a literal manner, 4) Court decision drop one bain sughra talak. From the explanation above, it can be concluded that the provisions of the fasakh of marriage by reason of poor husbands in the opinion of the Syafi'iyyah clerics are better and fair because they are supported by a strong foundation and are most in accordance with the soul, basis and principles of Islamic law. Therefore in Indonesia requires more explicit rules about fasakh (divorce) with the excuse of poor husbands.

    The Efficacy of Emotion Regulation Therapy (ERT) in Generalized Anxiety Disorder (GAD): symptom reduction and improving of emotion regulation and mindfulness skills

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    Background: According to Emotion Dysregulation Model (EMD), Generalized Anxiety Disorder (GAD) symptoms may be maintained by emotional hyperarousal, experience of intense emotion, poorer understanding of emotions, negative attitudes about emotions, and maladaptive emotion regulation and management. based on the EMD, Emotion Regulation Therapy (ERT) is a mechanism-targeted intervention that cultivating emotion regulation skills. Materials and Methods: Four men with generalized anxiety disorder were selected from Counseling Center of University of Tehran and Talieh Mehr clinic. Anxiety and Related Disorders Interview Schedule for DSM-IV (ADIS-IV) were used to diagnosis GAD and other disorders. Subjects were selected using purposeful sampling, multiple baseline experimental single case study was used as the method of the present study. The treatment program was carried out for 14 weekly sessions (14-session version), with a follow-up period of 2 months subsequent to treatment termination. Subjects completed the Penn State Worry Questionnaire (PSWQ), Beck Anxiety Inventory (BAI), Generalized Anxiety Disorder 7-item (GAD-7), The Emotion Regulation Questionnaire (ERQ), Five Facet Mindfulness Questionnaire (FFMQ) in the baseline, during treatment, post-treatment and follow-up period. Results: The patients demonstrated distinct improvements in symptom severity (i.e., worry, anxiety and GAD cretria in GAD-7), and in model-related outcomes including, mindful attending/acceptance, and cognitive reappraisal. Patients maintained gains across the two month follow-up period. In addition to, ERT was very well tolerated by patients and all of patients completed sessions. Conclusion: Results of present study provide additional evidence for the efficacy of the ERT in the treatment of generalized anxiety disorder (GAD), and additional support for the role of emotion dysregulation in the onset, maintenance, and treatment GAD

    A Comparison of Motivation, Metacognition and Mathematic Emotion Regulation in Students with Math Anxiety and Normal Students

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    The aim of this study was to compare motivation, metacognitive ability and adjustment of mathematical emotion in normal and anxious students.the research project was casual -Comparative and Statistical Society was 524 Fifth Grade Girls of Lahijan Normal Schools in 2018-2019 which after screening 142 students were equally divided in two groups. The main instruments of this study were Hanin et al.'s (2017) children's emotion regulation scale, Corter's mathematical motivation (2005), Philipo and Panora mathematical metacognitive (2007), and cognetive instruments Chiu's and Henry's children's mathematical anxiety (1990), Tabrizi Mathematical Disorder Scale (2015) and Raven's test (1938). Data were analyzed using SPSS software, MANOVA statistical methods and independent T-test. The results showed, the group with anxiety scored lower in all three variable) p < 0/05). In addition, there was no significant difference between the two groups in the motivation component in metacognition and help- seeking and maintain attention and concentration in the emotion regulation scale. Due to the importance of cognitive and motivational variable

    Identifying and explaining the factors affecting the design of safe structures of Nahaja fighter aircraft with physical defense approach

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    Objective: By using effective factors in the design of safe structures, it is possible to create a suitable level of protection for Nahaja fighter planes in the environment of future battles; in such a way that they are hidden and safe from detection and damage sensors and advanced weapons of the enemy. Therefore, in this research, the factors affecting the design of the safe structures of Nahaja fighter planes have been identified and explained with the approach of physical defense.Method: The type of applied-developmental research is a descriptive-case study method with a mixed approach. The statistical population of the study included all experts and experts of the military apparatus who are familiar with the topics of passive defense. Using purposive sampling method, 30 people were selected as the sample. Data collection tools included interviews, questionnaires, and standard documents whose validity was confirmed by content validity and their reliability by Cronbach's alpha.Findings: Based on the data analysis, the most influential components of the independent variable are location; Related to territorial planning with an average of 4/533 and a variance of 0/315, and the lowest impact related to technical and engineering factors with an average of 4/1 and a variance of 0.83, the highest impact of independent variable components of architectural principles and techniques related to interior architecture design with an average of 47 4.4 and variance 0.38 and the lowest effect related to multi-purpose use with an average of 3.13 and variance 1.18, the highest effect of the component in the field of using electrical facilities with an average of 4.43 and variance 0.57 and the lowest effect related to using the fire alarm system with a mean of 4.33 and a variance of 0.56.Conclusion: Failure to observe the factors affecting the design of safe structures of  Nahaja fighter jets with the physical defense approach, in addition to the vulnerability of these places during the threat, leads to irreparable damage

    Optical Coherence Tomography Angiography Findings after Acute Intraocular Pressure Elevation in Patients with Diabetes Mellitus versus Healthy Subjects

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    Purpose: To assess the changes in optic nerve head and macular microvascular networks after acute intraocular pressure (IOP) rise in healthy eyes versus the eyes of diabetic patients. Methods: In this prospective, interventional, comparative study, 24 eyes of 24 adults including 12 eyes of healthy nondiabetic subjects and 12 eyes with mild or moderate non-proliferative diabetic retinopathy (NPDR) were enrolled. IOP elevation was induced by a suction cup attached to the conjunctiva. IOP and optical coherence tomography angiographic (OCTA) images of the optic disc and macula were obtained before and immediately after the IOP rise. Results: Baseline and post-suction IOPs were not significantly different between the two groups (all Ps &gt; 0.05). The mean IOP elevation was 13.93 ± 3.41 mmHg among all eyes and was statistically significant as compared to the baseline in both groups (both Ps &lt; 0.05). After IOP elevation, healthy eyes demonstrated a reduction in the vessel density in the whole image deep and superficial capillary plexuses and parafoveal deep capillary plexus (DCP) (all Ps &lt; 0.05). In diabetic retinopathy, foveal vessel density at DCP decreased significantly following IOP rise (Ps = 0.003). In both groups, inside the disc, vessel density decreased significantly after IOP rise (both Ps &lt; 0.05), however, no significant change was observed in peripapillary vessel density (both Ps &gt; 0.05). Conclusion: Acute rise of IOP may induce different levels of microvascular changes in healthy and diabetic eyes. Optic disc microvasculature originating from the posterior ciliary artery may be more susceptible to IOP elevation than that of retinal microvasculature

    The Effect of Adding Lidocaine to Patient Controlled Analgesia with Morphine on Pain Intensity after Caesarean Section with Spinal Anesthesia: A Double-Blind, Randomized, Clinical Trial

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    BACKGROUND: Caesarean section is one of the commonest gynaecological surgeries. AIM: Given the importance of pain relief after caesarean section surgery as well as contradictions in the studies conducted on intravenous lidocaine analgesic effects, this study aimed to evaluate the effect of adding lidocaine to patient-controlled analgesia (PCA) with morphine on pain intensity after caesarean section surgery. MATERIAL AND METHODS: In a double-blinded, randomised clinical trial, 80 women who were scheduled for caesarean section surgery with spinal anaesthesia at Sari Imam Khomeini Hospital in 2017 were randomly assigned into two intervention and control groups. After surgery, all patients were connected to a morphine PCA pump. The PCA solution (total volume = 100 ml) in intervention group contained 50 ml of 2% lidocaine and 30 mg (3 ml) of morphine in 47 ml normal saline. In the control group, the PCA pump contained 30 mg (3 ml) of morphine, and the rest (97 cc) was normal saline. Patients' pain intensity was assessed at 2, 4, 6, 12, 18 and 24 hours after surgery using a visual analogue scale (VAS). Additionally, their postoperative nausea and vomiting, duration of hospitalisation, duration of ileus relapse after surgery, and patients' satisfaction after surgery were evaluated. Data were analysed using SPSS version 22 software.RESULTS: The mean and standard deviation of pain intensity in all patients at the intervals of 2, 4, 6, 12, 18 and 24 hours after surgery were 5.91 ± 1.57, 4.97 ± 1.55, 3.84 ± 1.60, 3.54 ± 1.45, 2.56 ± 1.70 and 0.94 ± 1.70, respectively. Data analysis revealed that, regardless of the groups, postoperative pain intensity significantly decreased (P &lt; 0.0001). However, there were no significant differences between the two groups in terms of mean postoperative pain intensity at any time interval (p &gt; 0.05). Also, there was no significant difference between the two groups in terms of frequency of receiving the diclofenac suppositories after the surgery (p &gt; 0.05). Additionally, there was no statistically significant difference between the two groups in terms of postoperative nausea and vomiting, duration of hospitalisation, duration of postoperative ileus relapse and patients' satisfaction (p &gt; 0.05).CONCLUSION: Based on the results of this study, it seems that adding lidocaine to PCA with morphine, compared with morphine PCA alone, do not have a significant effect on reducing the pain intensity after cesarean section using spinal anaesthesia. Although, further studies with larger sample size are warranted
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