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Search Results: 1 - 10 of 7457 matches for " Hasan SA. "
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On the Electrical and Optical Properties of Polycarbonate /MNCl2 Composite  [PDF]
Hasan M. El Ghanem, Subhi A. Saq’an, Mahmoud Al Saadi, Sa’di M. Abdul Jawad
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.212189
Abstract: The nature of the MnCl2 salt as a filler to polycarbonate , including their composition, particles dimensions and homogeneity of distribution have been studied using different spectroscopic techniques (XRD, DSC and TGA). A slight increases in the chain-chain separation due to the interaction of the MnCl2 salt with the polycarbonate chains was observed , while a decrease in the optical energy gap (Eopt ) of the polycarbonate polymer with increasing the salt concentration was detected .However employing impedance spectroscopy in the frequency range 10Hz up to 106 Hz. reveals an increase in the dielectric permittivity and conductivity with increasing salt content
Pain Management in Prostate Cancer  [PDF]
Ali Eman, Serbülent G?khan Beyaz, Hasan Sa?lam, Mustafa Emre Gürcü
Open Journal of Urology (OJU) , 2012, DOI: 10.4236/oju.2012.223031
Abstract: Prostate cancer is the most common urogenital malignity of western communities and is the second leading cause of cancer-related deaths in this population. Pain is often due to bone metastasis in prostate cancer. For the patient diagnosed with cancer and for his family, pain is the most feared aspect of cancer following the likelihood of failure to treat and death. Quality of life is severely impaired together with complaint of pain which arises high rates as 80% in advanced stage cancers.
Oral Submucous Fibrosis a Distressing Disease with Malignant Potential
Afroz N,Hasan SA,Naseem S
Indian Journal of Community Medicine , 2006,
Estimates of Genotype x Environment Interactions and Heritability of Black Point in Durum Wheat
Hasan KILI?,Abuzer SA?IR,Yunus BAYRAM
Notulae Scientia Biologicae , 2009,
Abstract: Experiments were carried out in four different locations with 14 durum wheat genotypes in two successful seasons of 1999- 2000 and 2000-2001. Black point disease of genotypes was evaluated by interactions of genotypes and environment as well as heritability (h2). It was found that black point disease affected differently in different locations and growing seasons. This indicates that the genotypes have different adaptation ability for traits studied in different locations. Heritability rate that variance analyzes accepted means squares calculated was found as phenotypic variance rate of genotypic variance was found as 49%. Variance of genotype x location x year was bigger than other variance components. Genotype x year variance was bigger than genotype x location variance too. The heritability of black point disease was founded moderate. In addition to one of factors on the black point disease genotype also environment x genotype interactions were found effective. According to evaluation of black point disease, the highest value was obtained from Sorgül (2.7%), Dicle-74 (2.56%) and Gidara-II (2.32%) varieties; the least value was obtained from Balcal -2000 variety (0.64%). Alternaria spp., Phoma sp., Fusarium spp., Helminthosporium spp., and Stemphylium spp., fungi were isolated from the grain affected by black point diseases.
Growth, nitrate reductase activity and antioxidant system in cadmium stressed tomato (Lycopersicon esculentum Mill.) cultivars
Hayat, S.,Hasan, SA.,Ahmad, A.
Biotechnologie, Agronomie, Société et Environnement , 2011,
Abstract: Ten cultivars of tomato were subjected to different cadmium (Cd2+) concentrations, to find out their degree of tolerance towards these metal ions during the tomato ontogeny. Seeds of tomato cultivars (i.e. 'K-25', 'K-21', 'NTS-9', 'Kaveri', 'NBR-Uday', 'Swarnodya', 'Sarvodya', 'NBR-Uttam', 'Malti' and 'S-22') were soaked in 0, 50, 100 or 150 μM of Cd2+ for 0, 4, 8 or 12 h. Despite substantial varietal differences, increases in Cd2+ concentration and the soaking duration caused a linear decrease in growth and a reduced activity of catalase and peroxidase for all varieties. Variety 'K-25' was found to be the most resistant cultivar as it possessed maximum activity of antioxidative enzymes reflecting one of the possible reasons to overcome stress conditions. However, the seeds of 'S-22' could not germinate in the presence of even the lowest Cd2+ concentration.
Changes in Electrocardiogram Findings during Treatment with Gonadotropin-Releasing Hormone Agonist and Surgical Castration for Prostate Carcinoma  [PDF]
Hasan Sa?lam, Akif ?akar, Osman K?se, ?ükrü Kumsar, Salih Budak, Serbülent G?khan Beyaz, ?ztu? Adsan
Open Journal of Urology (OJU) , 2012, DOI: 10.4236/oju.2012.223029
Abstract: Purpose: To investigate electrocardiogram (ECG) changes after complete androgen blockade (CAB) achieved by either surgical or medical castration and compare the outcomes of the groups. Methods: Sixty-three consecutive men (between 58 - 86 years of age) requiring CAB for prostate cancer were enrolled in the study. Patients with diabetes mellitus, an additional malignancy, coronary heart disease, atrial fibrillation, heart failure or a medical history of cardiac event in the last 12 months were excluded from the study. Additionally, those who were taking medicine affecting heart rate were excluded. The participants were divided into two groups according to their modality of castration. The first group consisted of 35 patients who received bilateral orchiectomy plus anti-androgen medication. The second group contained 28 patients who accepted gonadotropin-releasing hormone (GnRH) plus anti-androgen therapy. After complete examinations and biochemical tests, the ECG leads of the patients were obtained conveniently. This was then repeated at three- and six-month visits. ECG findings (including heart rate, PR, QRS, QT, corrected QT (QTc) intervals and QT dispersion (QTd)) were recorded and analysed statistically. The groups were then compared in terms of pre- and post-treatment ECG outcomes. Results: Both groups revealed similarly lower heart rate and prolonged PR, QRS, QT, corrected QTc and QTd by the end of six months. By the end of three months, all variables had changed significantly in the orchiectomy group, whereas in the GnRH group, they had not. Conclusion: CAB may result in lower heart rate and prolonged QT, a condition associated with fatal cardiac arrhythmia and sudden death. Therefore, patients receiving CAB should be monitored closely for cardiac adverse effects.
Clinical Profile of Patients with Osteoarthritis of the Knee A Study of 162 Cases
Shakoor MA,Taslim MA,Ahmed MS,Hasan SA.
Indian Journal of Physical Medicine and Rehabilitation , 2009,
Abstract: One hundred sixty two patients of osteoarthritis (OA)knee were studied to describe their clinical profile. Thepatients were included according to the criteria developedby the American College of Rheumatology. Detailedhistory, clinical examination and X-rays were carried out.The data were analysed statistically and the results wereexpressed in percentage and frequency. In this study, 96(59.3%) were male and 66 (40.7%) were female. Themean age of the subject was 53.73 ± 11.35 years. Mostof the patients of were in the age group of 50 to 59 years.Maximum number of females in the age group of 35 to45 years was affected. Most of the males were affectedin the later ages, between 55 to 65 years. Most of thepatients were middle class (68.5%) and housewives(35.8%). Mean height was 159.99 ± 8.12 cm and meanweight was 63.34 ± 11.60 kg. Mean duration of symptomswas 25.25 ± 38.85 months. Most patients gave the historyof gradual onset of the pain (87.7%). Most of the patientshad no morning stiffness in the knee (90.1%). Morningstiffness was present in 9.3% but it was for less than onehour. Maximum patients had intermittent pain (53.7%)but 46.3% patients had constant pain. By this study, itcan be concluded that OA knee is commoner in malesbut females develop it earlier in the life than the males.
Field Dependence of the Spin Relaxation Within a Film of Iron Oxide Nanocrystals Formed via Electrophoretic Deposition
Kavich DW,Hasan SA,Mahajan SV,Park J-H
Nanoscale Research Letters , 2010,
Abstract: The thermal relaxation of macrospins in a strongly interacting thin film of spinel-phase iron oxide nanocrystals (NCs) is probed by vibrating sample magnetometry (VSM). Thin films are fabricated by depositing FeO/Fe3O4 core–shell NCs by electrophoretic deposition (EPD), followed by sintering at 400°C. Sintering transforms the core–shell structure to a uniform spinel phase, which effectively increases the magnetic moment per NC. Atomic force microscopy (AFM) confirms a large packing density and a reduced inter-particle separation in comparison with colloidal assemblies. At an applied field of 25 Oe, the superparamagnetic blocking temperature is TBSP ≈ 348 K, which is much larger than the Néel-Brown approximation of TBSP ≈ 210 K. The enhanced value of TBSP is attributed to strong dipole–dipole interactions and local exchange coupling between NCs. The field dependence of the blocking temperature, TBSP(H), is characterized by a monotonically decreasing function, which is in agreement with recent theoretical models of interacting macrospins.
The effect of hemodialysis on right ventricular functions in patients with end-stage renal failure
Mehmet Akkaya,Ercan Erdo?an,Saim Sa,Hasan Ar?
Anadolu Kardiyoloji Dergisi , 2012,
Abstract: Objective: The aim of this study was to evaluate the effects of hemodialysis (HD) on right ventricular echocardiographic parameters in patients with end-stage renal failure (ESRF). Methods: Forty-three uremic patients who underwent echocardiography before and 30 minutes after dialysis included in this prospective observational study. Right ventricular systolic function was evaluated using tricuspid annular plane systolic excursion (TAPSE) by M-mode echocardiography and tricuspid lateral annular systolic velocity (Sa) by tissue Doppler echocardiography whereas diastolic function was evaluated using tricuspid early (E) and late (A) diastolic flow velocities by conventional and tricuspid lateral annular early (Ea) and late (Aa) diastolic velocities by tissue Doppler echocardiography. Myocardial performance index was taken as an indicator of global functions. Paired t test or Wilcoxon test were used for statistical analysis where appropriate.Results: E decreased significantly (68±13 cm/s and 56±12 cm/s before and after HD, respectively; p<0.0001) but A did not (p=0.797).TAPSE was 1.84±0.34 cm before HD and showed a significant increase to 2.03±0.20 cm after HD (p=0.006). Right ventricular MPI, Sa and Aa did not change significantly by dialysis (p=0.504; p=0.118 and p=0.150 respectively) whereas Ea decreased to 8.8±2.5 cm/s from 11.3±3.4 cm/s (p<0.001). Ea/Aa ratio also decreased significantly to 0.69±0.35 from 0.84±0.44 with HD (p=0.007).Conclusion: The results of this study indicates that parameters of right ventricular systolic function such as Sa and MPI are independent of preload whereas the conventional and tissue Doppler parameters of right ventricular diastolic function are preload dependent in patients with end-stage renal failure who undergo regular hemodialysis.
A retrospective cohort study of clinical outcomes for intravitreal crystalline retained lens fragments after age-related cataract surgery: a comparison of same-day versus delayed vitrectomy
Vanner EA, Stewart MW, Liesegang TJ, Bendel RE, Bolling JP, Hasan SA
Clinical Ophthalmology , 2012, DOI: http://dx.doi.org/10.2147/OPTH.S27564
Abstract: retrospective cohort study of clinical outcomes for intravitreal crystalline retained lens fragments after age-related cataract surgery: a comparison of same-day versus delayed vitrectomy Review (1677) Total Article Views Authors: Vanner EA, Stewart MW, Liesegang TJ, Bendel RE, Bolling JP, Hasan SA Published Date July 2012 Volume 2012:6 Pages 1135 - 1148 DOI: http://dx.doi.org/10.2147/OPTH.S27564 Received: 04 April 2012 Accepted: 29 April 2012 Published: 18 July 2012 Elizabeth A Vanner,1 Michael W Stewart,2 Thomas J Liesegang,2 Rick E Bendel,2 James P Bolling,2 Saiyid A Hasan2 1Departments of Preventive Medicine and Health Care Policy and Management, Stony Brook University, Stony Brook, NY; 2Department of Ophthalmology, Mayo Clinic College of Medicine, Jacksonville, FL, USA Background: This analysis compared outcomes for same-day (under a no-move, no-wait policy) versus delayed vitrectomy for intravitreal crystalline retained lens fragments after surgery for age-related cataract. Methods: This was a retrospective, nonrandomized treatment comparison cohort study with a consecutive series of 35 eyes (23 same-day, 12 delayed) receiving both cataract surgery and vitrectomy at the Mayo Clinic Florida between 1999 and 2010. Outcome measures included visual acuity (VA), glaucoma progression, visual utility, and complications. Several techniques (bootstrapping, robust confidence intervals, jackknifing, and a homogeneous sample) were used to reduce selection bias and increase confidence in our small sample's results. Results: No significant baseline treatment group differences. Mean previtrectomy delay (12 eyes) was 40.9 days (median 29.5, range 1–166). Mean postvitrectomy follow-up (35 eyes) was 47.5 months (median 40.5, range 3.1–123.5). Same-day patients had significantly better final VA (adjusted for age [t = -2.14, P = 0.040] and precataract surgery VA [t = -2.98, P = 0.006]); a higher rate of good final VA (≥20/40), 78.3% (18/23) versus 58.3% (7/12); a lower rate of bad final VA (≤20/200), 4.3% (1/23) versus 25.0% (3/12); and fewer final retinal conditions, 4.3% (1/23) versus 50.0% (6/12). Same-day patients also had marginally significant better mean final VA in the operated eye (20/40 versus 20/90, Z = 1.51, P = 0.130) despite poorer initial VA (20/98 versus 20/75) and higher age (3+ years), better final visual utility, and longer survival times for better VA. Among patients with preexisting glaucoma, same-day patients experienced significantly less differential (operated versus nonoperated eye) glaucoma progression. Conclusion: Results favored same-day patients, who experienced better final VA and visual utility, less differential glaucoma progression, and fewer complications. Results need confirmation with larger samples.
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