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1.
Bull Environ Contam Toxicol ; 92(6): 726-32, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24687224

RESUMO

Metal contamination in arable soils and crops grown in and around an industrial area of Bangladesh were measured, and the transfer factor from soils to crops was calculated accordingly. The highest concentration was observed for Fe and the order of metal concentration was Fe > Zn > Cr > Pb > Cu > Ni > Cd in soils. Bioaccumulation and translocation of metals from roots to edible parts of the crop plants were varied for almost all elements studied. Absorption of metals was significantly more in the roots compared to other plant parts. Accumulation of all metals in the edible parts of the plants was compared with the recommended maximum tolerable levels proposed by the Joint FAO/WHO Expert Committee on Food Additives. Bioconcentration factors values based on dry weights were below one for all metals except Cu in the rice roots and decreased in the order of Cu > Zn > Fe > Pb > Ni > Cd > Cr.


Assuntos
Irrigação Agrícola , Produtos Agrícolas/metabolismo , Monitoramento Ambiental , Metais/metabolismo , Poluentes do Solo/metabolismo , Poluentes Químicos da Água/metabolismo , Bangladesh , Produtos Agrícolas/química , Resíduos Industriais , Metais/análise , Solo/química , Poluentes do Solo/análise , Eliminação de Resíduos Líquidos , Águas Residuárias/química , Poluentes Químicos da Água/análise
2.
Int J Surg ; 6(6): e97-9, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17561458

RESUMO

A young male patient presented with right lower abdominal pain and fever. He had tenderness in the right lumbar region, with no palpable lump. Subsequently he developed a tender fluctuant lump in the right loin. Abdominal ultrasonography showed heterogenous collection in the right lumber region near the posterior abdominal wall. Making a diagnosis of right-sided perinephric abscess, drainage was done. The patient was discharged. Eight months after his discharge, he developed fever and painful swelling in the previous operation site followed by spontaneous discharge of pus. Sinogram showed the contrast passed through the sinus tract into the large bowel and into the terminal ileum. Laparotomy, fistula tract was found communicating with the appendix. Appendicectomy and curettage of the fistula tract was followed by complete cure.


Assuntos
Abscesso Abdominal/cirurgia , Apêndice , Drenagem/efeitos adversos , Fístula Intestinal/etiologia , Abscesso Abdominal/etiologia , Apendicite/complicações , Humanos , Fístula Intestinal/diagnóstico , Fístula Intestinal/cirurgia , Masculino , Adulto Jovem
3.
Bioresour Technol ; 98(2): 465-9, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16524724

RESUMO

Lignins isolated from cotton stalks, jute stick and dhaincha by acidolytic dioxane were characterized using alkaline nitrobenzene oxidation, elemental analysis, methoxyl analysis and molecular weight analysis and UV, IR (1)H NMR spectroscopy. The C(9) formulas for cotton stalks, jute stick and dhaincha (Sesbania aculeata) lignin were C(9)H(9.36)O(4.50)(OCH(3))(1.23), C(9)H(9.02)O(4.57)(OCH(3))(1.35) and C(9)H(8.88)O(4.65)(OCH(3))(1.50), respectively. All three lignins were of the guaiacyl-syringyl type. Cotton stalks lignin contained more p-hydroxy phenyl unit than dhaincha and jute stick lignins as observed by alkaline nitrobenzene oxidation products. The beta-O-4 units in these nonwood lignins had predominately erythro stereochemistry type.


Assuntos
Gossypium/química , Lignina/química , Caules de Planta/química , Sesbania/química , Tiliaceae/química , Bangladesh
4.
Bioresour Technol ; 97(3): 401-6, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15927462

RESUMO

The chemical, morphological and anatomical studies of golpata fronds have been discussed. The lignin, pentosan and alpha-cellulose in golpata fronds were comparable to some common nonwood and hardwood raw materials. The alkali, water and dichloromethane solubility were higher than wood and common nonwood. The fiber length 1.73 mm was observed, which is little bit shorter than softwood and longer than hardwood but fiber diameter was very short. The pulpability of golpata fronds has also been studied. The pulp yield was very low and Kappa number was high. The strength properties were better than that of some common nonwood pulps. FT-IR spectrum and alkaline nitrobenzene oxidation products showed that golpata fronds lignin mainly consist of syringyl (S) and guaiacyl units (V).


Assuntos
Celulose/química , Lignina/química , Madeira , Celulose/isolamento & purificação , Lignina/isolamento & purificação , Teste de Materiais , Oxirredução , Solubilidade , Solventes , Espectroscopia de Infravermelho com Transformada de Fourier
5.
Anal Chem ; 68(18): 3210-4, 1996 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-8797381

RESUMO

A new thiocarbamate derivative is used in polymeric sensing films together with a lipophilic chromoionophore for determining Ag+ at submicromolar levels. The membrane composition has been optimized with a view to measuring concentrations of Ag+ added as a bacteriostatic agent to drinking water. The results compare well with those obtained by ICPMS.


Assuntos
Prata/análise , Abastecimento de Água/análise , Indicadores e Reagentes , Ionóforos , Espectrofotometria Ultravioleta
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