Understanding the plasmonic properties of dewetting formed Ag nanoparticles for large area solar cell applications

Cataloged from PDF version of article.The effects of substrates with technological interest for solar cell industry are examined on the plasmonic properties of Ag nanoparticles fabricated by dewetting technique. Both surface matching (boundary element) and propagator (finite difference time domain) methods are used in numerical simulations to describe plasmonic properties and to interpret experimental data. The uncertainty on the locations of nanoparticles by the substrate in experiment is explained by the simulations of various Ag nanoparticle configurations. The change in plasmon resonance due to the location of nanoparticles with respect to the substrate, interactions among them, their shapes, and sizes as well as dielectric properties of substrate are discussed theoretically and implications of these for the experiment are deliberated. (C) 2013 Optical Society of Americ

Myelodysplastic syndrome in childhood [Çocukluk çaginda miyelodisplastik sendrom]

Myelodysplastic syndrome (MDS) constitutes 1-16% percent of haematological malignancies in childhood and is more frequently seen between two and four years of age. There are differences between pediatric and adult MDS. RA and RARS are very rare in childhood, while RAEB and RAEBt are most frequently seen. It is very difficult to diagnose childhood MDS. However, there has been an increasing number of reports during the last decades on childhood MDS owing to the better recognition of the disease. Recently, because of inadequacy of classic FAB classification, WHO has offered a new classification of pediatric MDS, at its last meeting in 2002. Cytogenetic abnormalities are frequently seen in MDS such as monosomy 7. The median survival time was 13 months and the survival rate for three years from the establishment of diagnosis was 16%. The clinical and laboratory findings of MDS are similar to many other diseases, thus delayed diagnosis and treatment can lead to increased mortality. Though the only successful treatment is stem cell transplantation, difficulties in getting a right donor and thus time lapsed leads to higher mortality. We presented this review article to attract your attention to this topic

Intrathecal Methylprednisolone in CNS-Directed Triple Therapy of Pediatric ALL

WOS: 000445195001117

Hepatomesenteric trunk

An hepatomesenteric trunk, formed by the common hepatic and superior mesenteric arteries, was found in a 50-year-old male cadaver. The left gastric and splenic arteries arose as a common trunk, the gastrosplenic trunk, from the abdominal aorta ; no typical celiac trunk was present. In addition, the hepatomesenteric trunk passed posterior to the portal vein. A knowledge of variations of the common hepatic artery may be important in pancreaticoduodenectomy, as well as during hepatic artery infusion chemotherapy

TRANSIENT MYELOPROLIFERATIVE DISORDER ASSOCIATED WITH DOWN-SYNDROME AND HYPOTHYROIDISM

WOS: A1995QB37500014PubMed ID: 7703050

optoelectrochromic properties of its polymer

A dipyrromethane functionalized monomer; 5-(4-tert-butylphenyl)dipyrromethane (BPDP) was synthesized. The structure of the monomer was characterized by nuclear magnetic resonance (H-1 NMR and C-13 NMR) and Fourier transform infrared (FTIR) spectroscopies. Electrochemical polymerization of BPDP was performed in acetonitrile (AN)/LiClO4. The resulting conducting polymer was characterized by FTIR spectroscopy and electrical conductivity measurements. Spectroelectrochemical behavior and switching ability of P(BPDP) film were investigated by UV-Vis spectroscopy. P(BPDP) revealed color changes between yellow and blue in the reduced and oxidized states, respectively. In order to investigate electrochromic properties and stability of the P(BPDP) in electrochromic device (ECDs) application, dual type polymer ECD based on P(BPDP) and poly(ethylene dioxythiophene) (PEDOT) were constructed. Spectroelectrochemistry, switching ability and stability of the devices were investigated by UV-Vis spectroscopy and cyclic voltammetry. (C) 2008 Elsevier Ltd. All rights reserved

Meropenem versus piperacillin-tazobactam as empiric therapy for febrile neutropenia in pediatric oncology patients

PubMedID: 24969883Background: Infection is a serious cause of mortality in febrile neutropenia of pediatric cancer patients. Recently, monotherapy has replaced the combination therapy in empirical treatment of febrile neutropenia. Since there has been no reported trial comparing the efficacy of meropenem and piperacillin-tazobactam (PIP/TAZ) monotherapies, the present retrospective study was conducted to compare safety and efficacy in febrile neutropenic children with cancer. Materials and Methods: Charts of febrile, neutropenic children hospitalized at our center between March 2008 and April 2011 for hemato-oncological malignancies were reviewed. Patients received PIP/TAZ 360 mg/kg/day or meropenem 60 mg/kg/day intravenously in three divided doses. Duration of fever and neutropenia, absolute neutrophil count, modification, and success rate were compared between the two groups. Resolution of fever without antibiotic change was defined as success and resolution of fever with antibiotic change or death of a patient was defined as failure. Modification was defined as changing the empirical antimicrobial agent during a febrile episode. Results: Two hundred eighty four febrile neutropenic episodes were documented in 136 patients with a median age of 5 years. In 198 episodes meropenem and in 86 episodes PIP/TAZ were used. Duration of fever and neutropenia, neutrophil count, sex, and primary disease were not different between two groups. Success rates and modification rate between two groups showed no significant differences (p>0.05). Overall success rate in the meropenem and PIP/TAZ groups were 92.4% and 91.9% respectively. No serious adverse effects occurred in either of the groups. Conclusions: Meropenem and PIP/TAZ monotherapy are equally safe and effective in the initial treatment of febrile neutropenia in children with cancer

Transient myeloproliferative disorder associated with down syndrome and hypothyroidism

PubMedID: 7703050[No abstract available