Vitamin D Acts as Bio-marker For Predicting IVF Success: A Case Study

Abstrac

Comparative assessment of Demerijian\'s and Cameriere\'s dental age estimation in children - A panaromic radiographic study

Age estimation in children is a fundamental question in forensic medicine and in treatment planning. Estimation of age is required to answer a variety of legal questions like status of majority and criminal liability such as in child marriage, sexual harassment and in situations where birth data is lacking or doubted.Various methods have been proposed for assessment of the dental maturation, but the most widely applied method is by Demirijian et al. Cameriere’s method is also used to assess chronological age in children with open apex. With this background, the present study was conducted to estimate the dental age of the children from open and closed apex.240 digital panoramic radiograph of patients aged between 5 and 15 years were taken randomly Dental age estimation was performed using by Demirijians and Cameriere‘s method.The mean difference between the chronological and dental age was found to be 3.93 and 0.17 for Demirijian’s and Cameriere’s age estimation method respectively. In Demirijian’s method, the accuracy was found more in older females where as in Cameriere’s method the accuracy was almost same in all the age groups and the precision was seen in males than in females, on comparison Cameriere’s age estimation method was more accurate than Demirijian’s method.Dental maturity can be used to assess chronological age in children either by Demirijian’s or Cameriere’s method, Cameriere’s method was more accurate than Demirijian’s method.</jats:p

The effect of structural properties of Cu2Se/polyvinylcarbazole nanocomposites on the performance of hybrid solar cells

It has been said that substitution of fullerenes with semiconductor nanocrystals in bulk heterojunction solar cells can potentially increase the power conversion efficiencies (PCE) of these devices far beyond the 10% mark. However new semiconductor nanocrystals other than the potentially toxic CdSe and PbS are necessary. Herein we report on the synthesis of Cu2Se nanocrystals and their incorporation into polyvinylcarbazole (PVK) to form polymer nanocomposites for use as active layers in hybrid solar cells. Nearly monodispersed 4 nm Cu2Se nanocrystals were synthesized using the conventional colloidal synthesis. Varying weight % of these nanocrystals was added to PVK to form polymer nanocomposites. The 10% polymer nanocomposite showed retention of the properties of the pure polymer whilst the 50% resulted in a complete breakdown of the polymeric structure as evident from the FTIR, TGA, and SEM. The lack of transport channels in the 50% polymer nanocomposite solar cell resulted in a device with no photoresponse whilst the 10% polymer nanocomposite resulted in a device with an open circuit voltage of 0.50 V, a short circuit current of 7.34 mA/cm2, and a fill factor of 22.28% resulting in a PCE of 1.02%.SP201

Colloidal synthesis of pure CuInTe₂ crystallites based on the HSAB theory

The determination of the order of precursor addition based on the HSAB theory in the synthesis of pure CuInTe2 particles.</p