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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Veterinary Surgery
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: Objective- To evaluate the radiology application in diagnosis of heavy metal poisoning inbirds. Design- Descriptive study. Animals- In this article 4 suspected cases of heavy metal poisoning, including 3 African Grey Parrots and a Sulfur Crested Cockatoo are described. Procedures- Presumptive diagnosis of heavy metal poisoning was made based on history andclinical signs including severe progressive depression, anorexia, regurgitation, vomiting, etc. Radiographic signs like presence of metallic densities in gastrointestinal (GI) tract, proventricular dilation and delayed GI passage time besides responses to treatment, confirm the diagnosis. Treatment including supportive care, rehydration and chelation therapy byadministration of CaEDTA and D-penicillamine was initiated immediately after primarydiagnosis in three cases out of four which resulted in dramatic response. Results- Based on our study, radiology can be a valuable tool for heavy metal poisoningdiagnosis in exotic birds and it can be confirmed by dramatic response to the initiation ofmentioned therapy. Conclusion and Clinical Relevance- Heavy metal poisoning is one of the most importanttoxicoses among pet and aviary birds and is commonly encountered in psittacine birdsbecause of their curiosity and special behavior in biting and chewing inanimate objects. Results of this study can be useful for avian clinicians.
- انتشار مقاله: 14-05-1386
- نویسندگان: Seyyed Ahmad Madani,Alireza Vajhi,Amir Rostami,Mohammad Mehdi Dehghan,Sarang Soroori,Fatemeh Arab Khazaei
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Pediatrics
- نوع مقاله: Journal Article
- کلمات کلیدی: Pediatrics,dialysis,Renal Replacement Therapy,Technique failure
- چکیده:
- چکیده انگلیسی: Background: Statistics have shown that the rate of technical failure in peritoneal dialysis (PD) is greater than hemodialysis. In this regard, the present study is aimed to determine the prevalence and risks factors of technique failure of PD in Iranian children using the country’s computerized PD data registry system.
Materials and Methods: Data of 405 PD patients younger than 20 years old were extracted from Iranian PD registry. The joint models of longitudinal and time-to-event data were used to assess independent risk factors of PD technique failure.
Results: PD technique failure occurred in 17.3% of the patients. 1 ng/ml increase in the baseline level of ferritin and 1 mmHg increase in the baseline systolic blood pressure will result in 0.11% (Hazard Ratio [HR]=1.0011; p=0.001), and 1.25% (HR=1.0125; p=0.046) increase in the risk of PD technique failure, respectively. In addition, 1 g/dl decrease in the baseline hemoglobin will cause a 16.25% increase in the risk of PD technique failure (HR=0.8602; p=0.026). Finally, 1 mg/l decrease in the blood urea nitrogen over time after starting PD will result in 1.75% increase in the risk of PD technique failure (HR=0.9829; p=0.006).
Conclusion: The findings from this study showed that an increase in ferritin as well as systolic blood pressure at the beginning of PD increase the risk of technique failure. Furthermore, an increase in the hemoglobin level at the beginning of PD as well as an increase in the blood urea nitrogen over time after starting PD have protective impacts on pediatric PD technique failure.- انتشار مقاله: 09-08-1398
- نویسندگان: Mostafa Hosseini,Shahin Roshani,Neamatollah Ataei,Fattah Hama Rahim Fattah,Mohammed Gubari,Michael Jones,Iraj Najafi,Fatemeh Darabi,Simin Darvishnoori Kalak,Mojtaba Fazel,Mehdi Yaseri,Mahmoud Yousefifard
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Pediatrics
- نوع مقاله: Journal Article
- کلمات کلیدی: risk factors,Children, Mortality, Peritoneal Dialysis, Survival
- چکیده:
- چکیده انگلیسی: Background: There is little information about the survival rate of pediatric peritoneal dialysis (PD) patients and its risk factors. Therefore, the aim of the present study was to assess survival rate and its risk factors in Iranian children undergoing PD.
Materials and Methods: Demographic and laboratory data of 407 Iranian children (up to 19 years old) undergoing PD, from 20 centers in Iran were included. The outcome of interest in our study was survival rate and determination of its risk factors in PD children. The joint models of longitudinal and time-to-event data analysis was used.
Results: The median duration of follow-up was 537 (interquartile range: 146 to 1,177) days. Finally, 72 (17.7%) patients died during a period of 23 years. Our results showed that one-year survival rate of PD patients was 93.6% and five-year survival rate was 76.9%. In addition, the most important risk factors for the PD all-cause mortality were age (HR=0.9301; 95% CI: 0.9031 to 0.9587), serum creatinine (HR=0.8907; 95% CI: 0.8138 to 0.9750), platelet count (HR=0.9999; 95% CI: 0.99995 to 0.99999), aspartate aminotransferase level (HR=1.0001; 95% CI: 0.9999, 1.0002), alkaline phosphatase (HR=0.9989; 95% CI: 0.9982 to 0.9997), renal solute clearance rate (HR=0.9839; 95% CI: 0.9700 to 0.9981), and normalized protein catabolic rate (HR=0.4031; 95% CI: 0.1879, 0.8648).
Conclusion: The survival rate of Iranian pediatric PD patients is similar to other countries. It is suggested that laboratory assessment be continually- انتشار مقاله: 24-04-1398
- نویسندگان: Mahmoud Yousefifard,Neamatollah Ataei,Shahin Roshani,Fatemeh Darabi,Iraj Najafi,Mojtaba Fazel,Zeynab Talayi,Michael Jones,Mehdi Yaseri,Mostafa Hosseini
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Psychology (IPA)
- نوع مقاله: Journal Article
- کلمات کلیدی: Academic Achievement,Locus of Control,optimism,school satisfaction
- چکیده: There is no doubt that the educational process consists of more than one or two factors. Several scholars maintain that it is important to put the emphasis on the role of psychological factors on academic performance. This study was an attempt to represent a pattern of correlations, through Structural Equation Modeling, among optimism, locus of control and academic achievement as well as the mediating effect of school satisfaction. Five-hundred and ten students, out a total population of the senior high-school (pre-university) male students, were selected randomly through cluster sampling. Data was collected through a set of questionnaires including: (1) Life Orientation Test-Revised Scale (Scheier &Carver, 1992), (2) School satisfaction sub-scale adopted from Satisfaction with Life Scale (Huebener, 1994), and (3) Internal-External Locus of Control Scale (Rotter, 1966). Data was submitted to a diagrammed structural equation model with its prerequisite exploratory factor analysis. The outcomes indicated that: (a) there is a bidirectional relationship between optimism and locus of control, (b) school satisfaction mediates the relationship between optimism and academic achievement, (c) the direct effect of school satisfaction on students’ academic achievement and the indirect effect of optimism on academic achievement through the mediating effect of school satisfaction was significant, and (4) there is no significant effect of locus of control on academic achievement while the mediating effect of school satisfaction is taken into account. The goodness of fit index indicated that the proposed diagrammed model is appropriate.
- چکیده انگلیسی: There is no doubt that the educational process consists of more than one or two factors. Several scholars maintain that it is important to put the emphasis on the role of psychological factors on academic performance. This study was an attempt to represent a pattern of correlations, through Structural Equation Modeling, among optimism, locus of control and academic achievement as well as the mediating effect of school satisfaction. Five-hundred and ten students, out a total population of the senior high-school (pre-university) male students, were selected randomly through cluster sampling. Data was collected through a set of questionnaires including: (1) Life Orientation Test-Revised Scale (Scheier &Carver, 1992), (2) School satisfaction sub-scale adopted from Satisfaction with Life Scale (Huebener, 1994), and (3) Internal-External Locus of Control Scale (Rotter, 1966). Data was submitted to a diagrammed structural equation model with its prerequisite exploratory factor analysis. The outcomes indicated that: (a) there is a bidirectional relationship between optimism and locus of control, (b) school satisfaction mediates the relationship between optimism and academic achievement, (c) the direct effect of school satisfaction on students’ academic achievement and the indirect effect of optimism on academic achievement through the mediating effect of school satisfaction was significant, and (4) there is no significant effect of locus of control on academic achievement while the mediating effect of school satisfaction is taken into account. The goodness of fit index indicated that the proposed diagrammed model is appropriate.
- انتشار مقاله: 07-10-1393
- نویسندگان: فیروزه سپهریان آذر,Sima Modirkhamene,Fatemeh Alizadeh Daraby
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of School Health
- نوع مقاله: Journal Article
- کلمات کلیدی: high school students,School Burnout,Exploratory and Confirmatory Factor Analysis
- چکیده:
- چکیده انگلیسی:
- انتشار مقاله: 11-10-1348
- نویسندگان: Fatemeh Arabshahi,Ali Fakhri,Maryam Serami,Mojtaba Ketabi,Zeynab Golestaneh,Hosein Akbari,Mahsa Asadollahezare
- مشاهده
- جایگاه : پژوهشی
- مجله: Avicenna Journal of Phytomedicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Seizure,Plant extracts,Zataria multiflora Boiss,Pentylenetetrazole
- چکیده:
- چکیده انگلیسی:
Objective: At present, there are many antiepileptic drugs with a wide range of side effects on the human body. It was assumed that Zataria multiflora Boiss (Z. multiflora) with sedative, anti-spasmodic and anti-inflammatory activity may be effective in the treatment of epilepsy. The aim of the present study was to elucidate the effect of Z. multiflora hydroalcoholic extract and its fraction extracts on pentylenetetrazole (PTZ)-induced chemical kindling.
Materials and Methods: In this experimental study, eight separate groups of male albino mice were used. All groups received 11 separate intraperitoneal injections of PTZ (35 mg/kg) with two-day intervals. 30 min before the injection of PTZ, mice received vehicle, Z. multiflora hydroalcoholic extract (300 and 600 mg/kg), n-hexane, acetone, methanol fraction extracts (150 mg/kg), or diazepam (10 mg/kg).
Results: The kindled mice that were pretreated with vehicle showed a gradual increase in their seizure scores up to the end of the study. The hydroalcoholic extract of Z. multiflora (300 and 600 mg/kg) reduced seizure scores significantly. However, n-hexane, acetone and methanol extracts did not affect seizure scores significantly.
Conclusion: The present findings demonstrate that the hydroalcoholic extract of Z. multiflora did reduce the severity of seizure attacks in PTZ-induced chemical kindling in mice.- انتشار مقاله: 06-05-1394
- نویسندگان: Ali Shamsizadeh,Farangis Fatehi,Fatemeh Arab Baniasad,Fatemeh Ayoobi,Mohammad Ebrahim Rezvani,Ali Roohbakhsh
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Layered double hydroxide,Magnetic separation,Adsorption kinetics,Anionic diazo dye
- چکیده:
- چکیده انگلیسی: A novel magnetic layered double hydroxide known as Zn0.5Cu0.5 Fe2O4@SiO2@Ni−Cr layered double hydroxide was synthesized with Zn0.5 Cu0.5Fe2O4, SiO2 and Ni−CrLDH by using coprecipitation method. In order to compare the adsorption efficiency, the Ni−CrLDH sample also was synthesized. The synthesized samples were characterized by X−ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The adsorption of Congo red (CR) by magnetic layered double hydroxide depended upon the contact time, initial dye concentration and pH. The adsorption of the Congo red (CR) reached equilibrium at 180 min and followed the pseudo−second−order kinetic equation. The adsorption capacity of the magnetic layered double hydroxide changed significantly between pH 4−10 and the maximum dye removal were 88% for CR. Moreover, the magnetic layered double hydroxide can be quickly separated from the aqueous solution by an external magnet before and after adsorption process. This indicated that the Zn0.5Cu0.5Fe2O4@SiO2@Ni−CrLDH composite was an effective adsorbent for CR dye removal with quick separation. The adsorption performance of the synthesized Zn0.5 Cu0.5Fe2O4, SiO2 and Ni−CrLDH and comparing with Ni−CrLDH show that the Zn0.5Cu0.5Fe2O4@SiO2@Ni−CrLDH can be more efficient than Ni−CrLDH for removal of CR dye.
- انتشار مقاله: 11-05-1396
- نویسندگان: Fatemeh Arab,Nahid Rasouli,Maryam Movahedi
- مشاهده
- جایگاه : پژوهشی
- مجله: Anthropogenic Pollution Journal
- نوع مقاله: Journal Article
- کلمات کلیدی: Titanium dioxide,Prefabricated facade,Sustainable Environment,Self- Cleaning,Nano-silica,water absorption
- چکیده:
- چکیده انگلیسی: Using mineral admixtures in cement composites as a way to improve their mechanical and sustainable environmental properties is a common practice in concrete technology. Among them nano-silica effectively influences the composite's early and long-term properties. In this study, the effect of different percentages of TiO2 (0, 2.5 and 5 %) on self-cleaning properties and water absorption of cement composites containing nano-silica were investigated. according to the use of different cementitious material (nano-silica) and TiO2 in mix proportions, to obtain mixtures with a desirable workability, superplasticizer was added in different volume percentages.Better size distribution and pore refinement lead to a denser cement matrix with low porosity which in turn considerably lower the water absorption of the cement composites. the maximum final water absorption according to ASTM C497 is 9% for method A and 8.5% for method B. Comparsions of water absorption tests as a result of adding of TiO2 and nano-silica in concrete show that the maximum final water absorption is 4.9% in N1 design mixture and the minimum final water absorption is 4.3% in N2 design mixture.The incorporation of TiO2 has positively affected the results for nano-silica containing specimens. A decrease of 6.5% and 11.1% between N1 and N3 respectively shows the positive effect of TiO2 on decrease of water absorption. The results show that TiO2 along with nanosilica has great potential for improving the environmental and self- cleaning properties of concrete facades of buildings in cities exposed to high levels of cleanliness.
- انتشار مقاله: 21-11-1398
- نویسندگان: Sayedeh Fatemeh Khoshkalam Soleimandarabi,Raheleh Rostami,Mehdi Nezhadnaderi
- مشاهده