Fine structure of beta decay endpoint spectrum

We note that the fine structure at the endpoint region of the beta decay spectrum is now essentially known using neutrino oscillation data, if the mass of one neutrino is specified. This may help to identify the effects of nonzero neutrino masses in future experiments. An exact treatment of phase space kinematics is used. This work is independent of theoretical models. Additional restrictions due to the assumption of a so-called "complementary ansatz" for the neutrino mass matrix are also discussed.Comment: 9 pages, 8 figure

Electroweak Phase Transition in the U(1)' MSSM

In this work, we have investigated the nature of the electroweak phase transition in the U(1) extended minimal supersymmetric standard model without introducing any exotic fields. The effective potential has been estimated exactly at finite temperature taking into account the whole particle spectrum. For reasonable values of the lightest Higgs and neutralino, we found that the electroweak phase transition could be strongly first order due to: (1) the interactions of the singlet with the doublets in the effective potential, and (2) the evolution of the wrong vacuum that delays the transition.Comment: substantial changes, references added, 18 pages, 4 figure

Age and dialysis adequacy in maintenance hemodialysis patients Hemodiliz hastalari yönetiminde yaş ve dializ yeterliliǧi

Aim: The issue of optimal dialysis dose and frequency has been a central topic in the delivery of dialysis treatment. We aimed to consider the effects of age on some hemodialysis parameters specially dialysis adequacy by urea reduction rate (URR) and to compare these parameters between diabetics and non diabetic HD(hemodialysis) patients. Material and Method: Patients with end-stage renal disease (ESRD), undergoing maintenance hemodialysis treatment were considered. The urea reduction rate and body mass index were calculated. Results: The total patients were 60 (F=21 M=39), consisting of 44 non diabetic hemodialysis patients (F=15 M=29), and 16 diabetic hemodialysis patients (F=6 M=10). A significant difference of dialysis adequacy between non-diabetics and diabetics was observed with lower values in diabetic group and a significant difference of dialysis adequacy and creatinine was observed in patients, with ages below and more than 50 years old with lower values in older patients. A significant negative correlation of age with dialysis adequacy in total hemodialysis patients and a significant negative correlation of age with serum creatinine were observed. Discussion: The negative effect of age on dialysis adequacy needs more attention to this aspect to reduce the dialysis complications which is frequently observed in older patients

Relationship of Conjunctival and Corneal Calcification with Secondary Hyperpara-thyroidism in Hemodialysis Patients

Abstract Background/Objective: Hyperphosphatemia is the consequence of end stage renal failure. Inadequate control of serum phosphorus results in elevated Ca×P product with subsequent soft tissue deposition in the form of conjunctival and corneal calcification. In this study, we evaluated the relationship of conjunctival and corneal calcification with secondary hyperparathyroidism in hemodialysis patients. Patients and methods: This is a descriptive–analytic study performed on 24 hemodialysis patients. We measured serum calcium, phosphorus, alkaline phosphatase, iPTH and conjunctival and corneal calcification using slit–lamp microscope according to a modification of Porter's criteria. The duration of hemodialysis was 30.7 ± 21.7 months. Results: 24 patients participated in this study. The biochemical values were: Ca: 9.1 ± 0.8 mg/dl, P: 6.5 ± 2.2 mg/dl, ipTH: 488 ± 326 pg/ml, Ca×P : 51.5 ± 16.6 The mean of conjunctival and corneal calcification score was 7.1±4. There was a positive correlation between conjunctival and corneal calcification with a duration of hemodialysis (p=0.033, r=0.436), Ca×P product (p=0.007, r=0.538). P (p=0.006, r=548) and iPTH (p= 0.028 , r=0.449). There was no correlation between conjunctival and corneal calcification with the age of the patients, serum calcium and alkaline phosphatase. Conclusion: There is a positive correlation of serum phosphorus, Ca×P product and iPTH with conjunctival and corneal calcification and no significant correlation with serum calcium implying that there is a central role for phosphorus in calcium-phosphorus deposition in soft tissues like cornea and conjunctiva, underscoring further attention to phosphorus control in hemodialysis patients

Brain and Lung Abscesses in a 48-year-old Man with Focal and Segmental Glomerulosclerosis.

Focal segmental sclerosis (FSGS) is a common cause of idiopathic nephrotic syndrome in the adult population. A patient aged 48- year-old was admitted for evaluation of azotemia. Renal biopsy showed tip lesion FSGS and acute tubular necrosis. After methyl prednisolone pulse therapy, partial remission occurred, and he was stable with oral prednisolone and cyclosporine. Few months later two serious complications including lung and brain abscess occurred. We describe a case of FSGS with lung and brain abscess, who responded to medical management

Relationship of Conjunctival and Corneal Calcification with Secondary Hyperparathyroidism in Hemodialysis Patients

Background/Objective: Hyperphosphatemia is the consequence of end stage renal failure. Inadequate control of serum phosphorus results in elevated Ca×P product with subsequent soft tissue deposition in the form of conjunctival and corneal calcification. In this study, we evaluated the relationship of conjunctival and corneal calcification with secondary hyperparathyroidism in hemodialysis patients. Patients and methods: This is a descriptive-analytic study performed on 24 hemodialysis patients. We measured serum calcium, phosphorus, alkaline phosphatase, iPTH and conjunctival and corneal calcification using slit-lamp microscope according to a modification of Porter's criteria. The duration of hemodialysis was 30.7± 21.7 months. Results: 24 patients participated in this study. The biochemical values were: Ca: 9.1 ± 0.8 mg/dl, P: 6.5 ± 2.2 mg/dl, ipTH: 488 ± 326 pg/ml, Ca×P: 51.5 ± 16.6 The mean of conjunctival and corneal calcification score was 7.1±4. There was a positive correlation between conjunctival and corneal calcification with a duration of hemodialysis (p=0.033, r-0.436), Ca×P product (p=0.007, r=0.538). P (p=0.006, r=548) and iPTH (p= 0.028, r=0.449). There was no correlation between conjunctival and corneal calcification with the age of the patients, serum calcium and alkaline phosphatase. Conclusion: There is a positive correlation of serum phosphorus, Ca×P product and iPTH with conjunctival and corneal calcification and no significant correlation with serum calcium implying that there is a central role for phosphorus in calcium-phosphorus deposition in soft tissues like cornea and conjunctiva, underscoring further attention to phosphorus control in hemodialysis patients

The Effect of Flavonoid Naringenin on Contractile Response of Thoracic Aorta Isolated from Diabetic Rats

Abstract: Background & Aims: Considering increasing incidence of cardiovascular disorders in diabetes mellitus and some evidence on antioxidant and antidiabetic potentials of naringenin, this study was conducted to evaluate the beneficial effects of 6-week administration of naringenin on contractile reactivity of isolated thoracic aorta in diabetic rats. Methods: Male Wistar rats were divided into control, naringenin-treated control, diabetic and glibenclamide-treated, and naringenin-treated diabetic groups. For induction of diabetes, streptozotcin (STZ) was administered (60 mg/Kg). Naringenin (10 mg/kg) was administered i.p. one week after diabetes induction in every other day intervals for 6 weeks. Serum glucose level was measured before naringenin administration and at 6th week. Finally, contractile reactivity of thoracic aortic rings to KCl and phenylephrine (PE) was cumulatively determined. Results: Serum glucose level at week 6 showed a significant decrease in naringenin-treated diabetic group compared to diabetics (P<0.01). In addition, naringenin-treated diabetic group showed a significantly lower contraction to PE (P<0.05) as compared to diabetic group and such significant reduction was also observed for KCl (P<0.05). Meanwhile, there was also a significant difference between control and naringenin-treated control groups regarding their contractile reactivity to PE (P<0.05). Conclusion: Subchronic administration of naringenin for 6 weeks could exert an anti-hyperglycemic effect and lowers contractile responsiveness of thoracic aorta rings to KCl and phenylephrine. Keywords: Naringenin, Diabetes mellitus, Aorta, Contractilit

Dual polarization operation of nanostructure arrays in the MIR region

In this paper, we report on arrays of asymmetric split H-shape nanostructures tuned to produce two distinct resonances at wavelengths that range from 3 μm to 7 μm. The electric-field of the incident wave has been both polarized parallel to the vertical asymmetric dipole arms and polarized across the 50 nm gap in the asymmetric horizontal bar. We have produced resonance quality factors as large as 26 in the mid-infrared region