Facile one-pot low-temperature solid-state approach towards phase transformation of nanoCdS

Micro & nano letters

article

Sk Ershadul Haque¹  Balan Ramdas²  Nagarajan Padmavathy¹  Angappan Sheela¹ 

[1] Materials Chemistry Division, Centre for Nanomaterials, School of Advanced Sciences, VIT University;Department of Physics, MVJ College of Engineering

关键词: solid-state phase transformations;    nanostructured materials;    cadmium compounds;    II-VI semiconductors;    wide band gap semiconductors;    nanofabrication;    X-ray diffraction;    ultraviolet spectra;    visible spectra;    scanning electron microscopy;    transmission electron microscopy;    grinding;    heat treatment;    facile one-pot low-temperature solid-state method;    phase transformation;    nanocadmium sulfide;    cadmium chloride;    sodium sulfide;    grinding period;    cubic-hexagonal phase transformation;    powder X-ray diffraction;    UV–visible absorption spectroscopy;    scanning electron microscopy;    high resolution transmission electron microscopy;    mixed zinc blende-wurtzite structures;    heat treatment;    photocatalytic efficiency;    methyl orange;    temperature 200 degC;   

DOI  :  10.1049/mnl.2014.0167

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

We describe a 48-year-old man with history of chronic pain radiating from the right oral cavity to the occipital region with comorbid depression. He received anti-depressant drugs such as sodium valproate and maprotiline for comorbid depression, but these had little effect. His decreased concentration and motivation became protracted, leaving him unable to work. Electroencephalographic findings suggested a mild consciousness disorder. Blood tests indicated that his serum ammonia levels were abnormally elevated. After valproate administration was gradually tapered off, the symptoms of decreased motivation and cognitive inhibition rapidly improved and he became more active. Although his moderate pain persisted, he no longer complained of pain. Finally, he succeeded in returning to work. The central nervous system depression due to valproate and hyperammonemia may have decreased his activity levels and exacerbated his pain. The objective of chronic pain therapy should be to help improve the patient’s quality of life, and attention must be paid to the possibility that the adverse drug effects may exacerbate pain due to a consciousness disorder and one’s decreased activity levels. This case report is valuable because there are few reports regarding a relationship between chronic pain and disorders of consciousness.

【 授权许可】

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