Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Ano de publicação
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
J Air Waste Manag Assoc ; 64(1): 115-23, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24620409

RESUMO

UNLABELLED: The biosorption characteristics of Cu(II) ions from aqueous solution using Lobaria pulmonaria (L.) Hoffm. biomass were investigated. The biosorption efficiency of Cu(II) onto biomass was significantly influenced by the operating parameters. The maximum biosorption efficiency of L. pulmonaria was 65.3% at 10 mg/L initial metal concentration for 5 g/L lichen biomass dosage. The biosorption of Cu(II) ions onto biomass fits the Langmuir isotherm model and the pseudo-second-order kinetic model well. The thermodynamic parameters indicate the feasibility and exothermic and spontaneous nature of the biosorption. The effective desorption achieved with HCl was 96%. Information on the nature of possible interactions between the functional groups of the L. pulmonaria biomass and Cu(II) ions was obtained via Fourier transform infrared (FTIR) spectroscopy. The results indicated that the carboxyl (-COOH) and hydroxyl (-OH) groups of the biomass were mainly involved in the biosorption of Cu(II) onto L. pulmonaria biomass. The L. pulmonaria is a promising biosorbent for Cu(lI) ions because of its availability, low cost, and high metal biosorption and desorption capacities. IMPLICATIONS: Lobaria pulmonaria is a promising biosorbent for Cu(II) ions because of its availability, low cost, and high metal biosorption and desorption capacities. To the best of our knowledge, this is the first paper on the biosorption Cu by L. pulmonaria.


Assuntos
Ascomicetos/metabolismo , Biodegradação Ambiental , Cobre/metabolismo , Modelos Teóricos , Termodinâmica , Cobre/química , Eliminação de Resíduos Líquidos
2.
Clin Dysmorphol ; 25(3): 91-7, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27100822

RESUMO

Mandibuloacral dysplasia (MAD) is an autosomal recessive disorder characterized by acroosteolysis (resorption of terminal phalanges), skin changes (hyperpigmentation), clavicular hypoplasia, craniofascial anomalies, a hook nose and prominent eyes, delayed closures of the cranial sutures, lipodystrophy, alopecia, and skeletal anomalies. MAD patients are classified according to lipodystrophy patterns: type A and type B. The vast majority of MAD cases are caused by LMNA gene mutations. MAD patients with type A lipodystrophy (MADA) have been reported to have LMNA R527H, A529V, or A529T mutations. In this report, we describe two MADA patients with progressive skeletal changes, absent breast development, and cataract in addition to the classical MAD phenotype. Both patients were found to be homozygous for the Ala529Val mutation of the LMNA gene. Our female patient is the oldest MADA patient (59 years old) who has ever been reported with the LMNA mutation and also the LMNA Ala529Val mutation. This study is the second report on MADA patients with a homozygous Ala529Val mutation.


Assuntos
Acro-Osteólise/diagnóstico , Acro-Osteólise/genética , Substituição de Aminoácidos , Códon , Lamina Tipo A/genética , Lipodistrofia/diagnóstico , Lipodistrofia/genética , Mandíbula/anormalidades , Mutação , Fenótipo , Adulto , Consanguinidade , Análise Mutacional de DNA , Éxons , Feminino , Homozigoto , Humanos , Cariotipagem , Masculino , Pessoa de Meia-Idade , Linhagem , Turquia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA