ALBERT

Beschreibung: Electroplating sludge is a hazardous waste produced in plating and metallurgical processes which is commonly disposed of in safety landfills. In this work, electroplating sludge containing 25.6% Fe and 5.5% Co (named S1) and another containing 36.8% Fe and 7.8% Cr (S2) were recycled for the preparation of erdite-bearing particles via a facile hydrothermal route with only the addition of Na2S·9H2O. In the sludges, Fe-containing compounds were weakly crystallized and spontaneously converted to short rod-like erdite particles (SP1) in the presence of Co or long nanorod (SP2) particles with a diameter of 100 nm and length of 0.5–1.5 μm in the presence of Cr. The two products, SP1 and SP2, were applied in electroplating wastewater treatment, in which a small portion of Co in SP1 was released in wastewater, whereas Cr in SP2 was not. Adding 0.3 g/L SP2 resulted in the removal of 99.7% of Zn, 99.4% of Cu, 37.9% of Ni and 53.3% of Co in the electroplating wastewater, with residues at concentrations of 0.007, 0.003, 0.33, 0.09 and 0.002 mg/L, respectively. Thus, the treated electroplating wastewater met the discharge standard for electroplating wastewater in China. These removal efficiencies were higher than those achieved using powdered activated carbon, polyaluminum chloride, polyferric sulfate or pure Na2S·9H2O reagent. With the method, waste electroplating sludge was recycled as nanorod erdite-bearing particles which showed superior efficiency in electroplating wastewater treatment.

Beschreibung: Background: Metaphase cytogenetics (MC), which has an important diagnostic, prognostic and therapeutic roles in myelodysplastic syndrome (MDS), is widely used as cytogenetic analyzing tools. It can present entire cytogenetic information at one time, although with some limitations such as Hypocellularity, fewer mitotic cells, secondary myelofibrosis and technicians' subjectivity. Single nucleotide polymorphism(SNP)array based karyotyping ( SNP-A based karyotyping) is a novel diagnostic tool which can detect copy number variations with a high resolution. More importantly, SNP-based array has a unique advantage in detection of loss of heterozygosity, also referred as to uniparental disomy (UPD), which results from duplication of a paternal (unimaternal) or maternal (unipaternal) chromosomal region and concurrent loss of the other allele. However the technology is still relatively expensive, and balanced structural METHOD: We analyzed SNP-A results from 127 patients diagnosed of MDS or MDS related myeloid malignancies(including 6 MDS/MPN, 11 acute myeloid leukemia from MDS, and 110 MDS). 122 patients of them had both MC and SNP-A results. We compared the frequency and diagnostic sensitivity between the cytogenetic aberration findings by MC and genomic alteration findings by SNP-A. In addition, we investigated the novel or additional lesions detected by SNP-A which had not been found by MC, and find further information about the edges of SNP-A. We drew attention to the missing matters of SNP-A which mentioned in MC reports to integrate the limits of SNP-A. We also used multiple-factor analysis to find out the specific situation which MC are not inferior to SNP-A. RESULTS: There are 199 genomic alteration findings in 127 patients by SNP-A ( including 43 UPDs, 57 gain alterations, 86 loss alterations and 13 complicated alterations). The average length of genomic alterations found by SNP-A is 27795.71Kb, the longest one is GainMosaic(1) (248375kb), the shortest is a UPD found in 17q (41.88Kb). In the 122 patients who had both MC and SNP-A results, SNP-A turns to be more effective than MC in significant chromosomal defects(58.2% vs 36.9%,P

Beschreibung: The microstructure evolution, mechanical properties, and tribological properties of high boron cast steel (HBCS) with various Mo concentrations are investigated. The results indicate that Mo addition can significantly modify the microstructure and enhance the comprehensive properties. With the increase of Mo concentration, borides change from the original fish-bone Fe-rich and Cr-rich M2B to dendritic Fe-rich M2B, blocky and cluster-like Cr-rich M2B, and grainy Mo-rich M2B. The hardness of HBCS increases gradually with the increase of Mo content due to the solid solution strengthening and the refinement of M2B. It can be found that all the samples exhibit quasi-cleavage, but the impact toughness increases firstly and reaches the maximum value when the concentration of Mo is 2.10 wt.%, which is the result of the dispersive distribution of M2B rather than the original fish-bone M2B. Subsequently, the impact toughness begins to decrease as the concentration of Mo further increases because of the extensive formation of grainy Mo-rich M2B at the grain boundary. Meanwhile, the wear results reveal that the average friction coefficient and wear ratio decrease with the increase of Mo content, and the wear mechanism changes from abrasive wear and adhesive wear to abrasive wear when the concentration of Mo exceeds 2.10 wt.%.