Generating efficient chaos effect in micro channel using electrohydrodynamic theory

AC electro-osmotic flow is a promising technique in microfluidic manipulation. AC electroosmotic force has been generated inside a novel twisted micro channel in order to overcome the low Reynolds number fluid. The behavior of concentration distribution has been investigated by solving the transient electric field, fluid mechanic and convection-diffusion theory inside the channel. Two particles have been released inside the channel to investigate the efficiency of generated chaotic regime. Velocity streamlines and perturbation of species concentration reveal high performance stirring process which above 95% mixing efficiency achieved for 210 μm channel length. The efficiency increases by increasing the applied voltage amplitude. Geometrical and exciting parameters have been optimized in order to maximize the efficiency of mixing process and avoid electrolysis and sample damage

Study of DMSA (99mTc-dimercaptosuccinic acid) scan disorders in children 1-12 years with first acute pyelonephritis and its association with vesicoureteral reflux

Background: Acute pyelonephritis and vesicoureteral reflux are one of the main causes of renal scarring in children, which can lead to serious complications such as hypertension and chronic renal failure. The aim of this study was to evaluate the scan disorders in children aged 1-12 years with acute pyelonephritis and its relation with ureteral bladder reflux.Methods: This retrospective cross-sectional descriptive study was conducted on all patients who had been diagnosed with febrile UTI for 4 years (2012-2015) in Ardebil's Children's Hospital. Information about 99mTc-DMSA scan and ultrasonography and cystoyurethrography of patients were extracted from the files and then analyzed by statistical methods inSPSS.19.Results: 148 children (9 boys and 139 girls) with a range of 1 to 12 years old (mean age of 52.34±4.34 months) were included in the study. Of these, 123 patients were subjected to cystoyurethrography after a negative urine culture. A 99mTc-DMSA scan report in the acute phase of the disease was abnormal in 80.4% of the children. VCUG and RNC tests were performed in 123 patients, in 70 (57%) normal cases, and in 53 cases (43%) of urinary reflux. The incidence of reflux with abnormal 99mTc-DMSA scan was 42%. There was no significant correlation between the prevalence of reflux in patients with abnormal 99mTc-DMSA scan in two groups of 1-4 years old and more than 4 years old. No significant difference was found in patients with abnormal scan in responding to treatment and comparing fever after admission in patients with normal 99mTc-DMSA.Conclusions: The results indicate high prevalence of reflux in patients with acute pyelonephritis. Due to the high sensitivity of the scan to detect pyelonephritis and, Pyelonephritis

Effect of Monetary Reward on Artistic Creativity

This study was undertaken in an attempt to expand previous research on the effects of material rewards on performance. Specifically, the purpose of this study was to assess the effects of material rewards on artistic creativity. This study was designed, also, to test the validity of the reward induced developmental regression hypothesis in an attempt to provide an adequate theoretical explanation for the differential effects of rewards on performance. Monetary rewards were found to have differential effects on artistic creativity and technical performance, on HIT variables associated with creativity, perceptual organization, and emotional disturbances affecting perception and fantasy. The enhancing and detrimental effects of rewards were found to be mediated by some important independent variables, such as the cognitive/emotional nature of the task, sex of subjects, training in art, and presence of artists in the family. An attempt is made in the present study, to explain the findings obtained within the notion of reward induced developmental regression. This dissertion differs somewhat from the format called for in the Oklahoma State University Thesis Writing Manual. The body of this dissertation consists of a complete manuscript prepared for publication entitled, "Effects of Monetary Rewards on Artistic Creativity," prepared according to the Publication Manual of the American Psychological Association, Third Edition. In order that the dissertation be complete by traditional standards, the Review of Literature section, which is usually presented in the body of the dissertation is presented in Appendix A. Also included as appendix materials are all supplemental materials (rating scales, questionnaire, etc,), raw data, and various statistical analyses.Home Economics-Family Relations and Child Developmen

Evaluation of Osveral efficacy in reducing ferritin levels in patients with thalassemia major

Background: Beta thalassemia is one of the inherited blood diseases in which the production of specific chains in hemoglobin decreases. Esfarlal is a shaltor which is used in these patients as a single dose per day. Since it is prescribed orally, it is easier to tolerate the drug and control the serum iron level of the patient. The aim of this study was to evaluate the efficacy of Osveral in reducing ferritin levels in patients with thalassemia major.Methods: This quasi-experimental study was performed on 48 patients with thalassemia major who referred to Bu-Ali hospital for receiving blood. At the beginning of the study, the required data were collected along with patients' tests including hemoglobin, ferritin, TSH, T4, CBC diff, BUN AST, ALT, BS and creatinine CBC diff. The Osveral drug was prescribed and the patients were evaluated monthly for up to 6 months on the basis of complications. In the first three months after the start of the drug, the serum ferritin level was measured, the dose was adjusted and 6 months after late, the previous tests were again requested, and the auditory and visual examinations were performed, and the information entered the checklist. Data were analyzed using SPSS statistical software.Results: Among all patients, 27 (56.2%) were male and the rest were women with a mean age of 22.22 ± 8.77 years. The results showed that during one year of study, hemoglobin level increased and ferritin level decreased significantly, and other parameters didn’t show significant difference. Nausea and vomiting were the most common complications among patients, which was higher after Osveral than before receiving Osveral.Conclusions: Results showed that Osveral is effective in reducing the level of ferritin in patients with thalassemia major, but control of hematuria is recommended when using this drug

Simultaneous occurrence of advanced neuroblastoma and acute lymphoblastic leukemia: a case report

Neuroblastoma is the most common extracranial solid tumor in children. The cooccurrence of neuroblastoma and acute lymphoblastic leukemia is rare. We report a rare case of advanced-stage neuroblastoma in a 3.5-year-old girl that was accompanied by acute lymphoblastic leukemia following treatment. Her leukemia may have been due to chemotherapy (secondary leukemia) or may have been de novo

Use of multiple natural enemies for inoculative biological control of Bemisia tabaci in greenhouse poinsettia production

Two natural enemies, Eretmocerus eremicus Rose & Zolnerowich (Hymenoptera: Aphelinidae) and Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae), that differ in their feeding niches were selected to determine whether the combination of natural enemies provides superior suppression of sweetpotato whiteflies, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), on poinsettias [Euphorbia pulcherrima Willd. ex Klotz. (Malpighiales: Euphorbiaceae)] compared to either natural enemy species alone. I started by surveying initial B. tabaci densities on poinsettia cuttings received by growers and retailer thresholds of finished poinsettias over two years. Initial B. tabaci densities were 0.1 nymphs per cutting received by growers and up to an average of 73 B. tabaci nymphs per finished poinsettia at any given retailer. In caged greenhouse experiments, I investigated B. tabaci suppression by the combination of E. eremicus and A. swirskii compared to each natural enemy alone. Ultimately, the combination treatment suppressed B. tabaci population growth similarly to either natural enemy alone. In a separate set of caged greenhouse experiments, I challenged natural enemy (single species or combination) suppression of B. tabaci by modifying the natural enemy release schedule (one-week delay at weeks 4 and 8) and simulating B. tabaci immigration (at weeks 4 or 8). The combination of E. eremicus and A. swirskii maintained superior suppression of B. tabaci compared to E. eremicus alone. All combination natural enemy treatments ultimately resulted in B. tabaci densities that were below retailer thresholds on finished poinsettias. Lastly, I compared the use of a seasonal inoculative biological control program using E. eremicus and A. swirskii to manage B. tabaci compared to conventional insecticide use in commercial poinsettia production at three grower facilities in east Texas. At all grower locations, B. tabaci densities were consistently similar or higher than the conventionally managed greenhouse; however, final B. tabaci densities were below retailer acceptable densities in all treatments. The cost of inputs for the biological control program was lower ($0.057) or higher ($0.178) than frequently reported insecticide input costs for 15.2-cm potted poinsettias ($0.09). My dissertation demonstrates effective and potentially economic use of multiple natural enemies for B. tabaci suppression in commercial poinsettia production for the first time

A Comparative Study of Shearlet, Wavelet, Laplacian Pyramid, Curvelet, and Contourlet Transform to Defect Detection

This study presents a new approach based on shearlet transform for the first time to detect damages, and compare it with the wavelet, Laplacian pyramid, curvelet, and contourlet transforms to specify different types of defects in plate structures. Wavelet and Laplacian pyramid transforms have inferior performance to detect flaws with different multi-directions, such as curves, because of their basic element form, expressing the need for more efficient transforms. Therefore, some transforms, including curvelet and contourlet, have been evaluated so far for improving the performance of traditional transforms. Although these transforms have overcome the deficiencies of previous methods, they have a weakness in detecting several imperfections with various shapes in plate structures —one of the essential requirements that each transform should possess. In this study, we have used the shearlet transform that is used for the first time to detect identification and overcome all previous transform dysfunctionalities. In this regard, these transforms were applied to a four-fixed supported square plate with various defects. The obtained results revealed that the shearlet transform has the premier capability to demonstrate all kinds of damages compared to the other transforms, namely wavelet, Laplacian pyramid, curvelet, and contourlet. Also, the shearlet transform can be considered as an excellent and operational approach to demonstrate different forms of defects. Furthermore, the performance and correctness of the transforms have been verified via the experiment

Comparative study of some cardiovascular diseases risk factors in type D personality and non- type D personality

زمینه و هدف: ریخت شخصیتی D (Distressed personality) حدود 21 جامعه سالم را تشکیل داده است و به عنوان یک ریسک فاکتور در بروزبیماری های قلبی-عروقی شناخته می شود. این تحقیق به منظوربررسی برخی ریسک فاکتورهای بروز بیماری های قلبی در افراد بزرگسال سالم دارای ویژگی ریخت شناسی D انجام شده است. روش بررسی: در این مطالعه توصیفی-تحلیلی 54 نفر (زن و مرد) از بین مراجعه کنندگان به مرکز آزمایشگاهی المهدی شهرکرد به روش نمونه گیری در دسترس انتخاب شدند. افراد تحت مطالعه بر اساس مقیاس DS14 به دو گروه تقسیم شدند. 27 نفر آنها که دارای تیپ شخصیتی D بودند در گروه مورد و 27 نفر دیگر که فاقد تیپ شخصیتی Dبودند در گروه شاهد قرار گرفتند. داده های پژوهش از طریق آزمون افسردگی بِک (Beck)، مقیاس های اضطراب و خشم اسپیلبرگر و نتایج آزمایشگاهی کلسترول، تری گلیسیرید،LDL و HDL جمع آوری شدند. برای تجزیه و تحلیل داده ها ازآزمون t مستقل استفاده شد. یافته ها: میزان اضطراب، افسردگی، خشم و LDL در گروه مورد به طور معنی داری بیشتر از گروه شاهد بود بود (05/0>P). میزان HDL بصورت جزئی در گروه مورد کمتر از گروه شاهد بود (052/0= P) و ارتباط معنی داری بین شخصیت D وکلسترول و تری گلیسیرید دیده نشد (05/