Search for Dijet Resonances in 7 TeV pp Collisions at CMS (vol 105, 211801, 2010)

Publisher’s Note: Search for Dijet Resonances in 7 TeV pp Collisions at CMS [Phys. Rev. Lett. 105, 211801 (2010)

Budd-Chiari Syndrome and Acute Liver Failure: An Uncommon Presentation of Acute Myeloid Leukaemia

Acute liver failure (ALF) is a rare entity, particularly in the context of Budd-Chiari syndrome (BCS). BCS is an uncommon disorder with multiple risk factors, most commonly myeloproliferative disorders. In BCS, active search and exclusion of underlying malignancy is mandatory, particularly in the context of ALF, as it may contraindicate liver transplantation (LT). We present the case of a healthy 29-year-old male, without known risk factors for liver disease, who presented to the emergency department with abdominal pain, ascites, and jaundice. BCS with consequent severe acute liver injury with rapid progression to ALF was diagnosed. The patient was listed for LT. The study of peripheral blood finally revealed myeloid blasts, and flow cytometry showed a population of blast cells with abnormal immunophenotypic profile (CD33+ and myeloperoxidase, MPO+). The bone marrow biopsy showed morphological and immunophenotypic aspects of acute myeloid leukaemia (AML) FAB M1. This diagnosis was considered a formal contraindication to LT, so the patient was delisted. ALF contraindicated rescue chemotherapy and AML contraindicated LT. The patient died 48 h after ICU admission. The search for underlying neoplasia is mandatory in the context of BCS, moreover with associated ALF, as it may limit lifesaving treatments and interventions to supportive and palliative care

Lattice sites of implanted Na in GaN and AlN in comparison to other light alkalis and alkaline earths

status: publishe

Lattice sites of ion-implanted Mn, Fe and Ni in 6H-SiC

© 2017 IOP Publishing Ltd. Using radioactive isotopes produced at the CERN-ISOLDE facility, the lattice location of the implanted transition metal (TM) ions 56Mn, 59Fe and 65Ni in n-type single-crystalline hexagonal 6H-SiC was studied by means of the emission channeling technique. TM probes on carbon coordinated tetrahedral interstitial sites (T C) and on substitutional silicon sites (S Si,h+k) were identified. We tested for but found no indication that the TM distribution on S Si sites deviates from the statistical mixture of 1/3 hexagonal and 2/3 cubic sites present in the 6H crystal. The TM atoms partially disappear from T C positions during annealing at temperatures between 500 °C and 700 °C which is accompanied by an increase on S Si and random sites. From the temperature associated with these site changes, interstitial migration energies of 1.7-2.7 eV for Mn and Ni, and 2.3-3.2 eV for Fe were estimated. TM lattice locations are compared to previous results obtained in 3C-SiC using the same technique.status: publishe

Lattice location study of low-fluence ion-implanted In-124 in 3C-SiC

status: publishe

Evidence of tetragonal distortion as the origin of the ferromagnetic ground state in γ -Fe nanoparticles

© 2017 American Physical Society. γ-Fe and related alloys are model systems of the coupling between structure and magnetism in solids. Since different electronic states (with different volumes and magnetic ordering states) are closely spaced in energy, small perturbations can alter which one is the actual ground state. Here, we demonstrate that the ferromagnetic state of γ-Fe nanoparticles is associated with a tetragonal distortion of the fcc structure. Combining a wide range of complementary experimental techniques, including low-temperature Mössbauer spectroscopy, advanced transmission electron microscopy, and synchrotron radiation techniques, we unambiguously identify the tetragonally distorted ferromagnetic ground state, with lattice parameters a=3.76(2)Å and c=3.50(2)Å, and a magnetic moment of 2.45(5) μB per Fe atom. Our findings indicate that the ferromagnetic order in nanostructured γ-Fe is generally associated with a tetragonal distortion. This observation motivates a theoretical reassessment of the electronic structure of γ-Fe taking tetragonal distortion into account.status: publishe

Post-harvest conservation of organic strawberries coated with cassava starch and chitosan

The strawberry is as non-climacteric fruit, but has a high post-harvest respiration rate, which leads to a rapid deterioration at room temperature. This study aimed to evaluate the application of biodegradable coating on postharvest conservation of organic strawberries, cv. Camarosa, packed in plastic hinged boxes and stored at 10ºC. The treatments consisted of: a) control; b) 2% cassava starch; c) 1% chitosan; and d) 2% cassava starch + 1% chitosan. Physical and chemical characteristics of fruits were evaluated at 3, 6 and 9 days of storage, and microbiological and sensory analyses were carried out at the end of the storage period. The treatments influenced positively the post-harvest quality of organic strawberries. The coating cassava starch + chitosan provided the best results, with less than 6% of loss in fruit mass, lower counts of yeast and psychrophilic microorganisms and the best appearance according to the sensory analysis