solid phase extraction (spe) cartridge embedded with octadecyl c18 chain bounded to silica particles were used for the isolation and trace enrichment of pesticides from water samples collected from cotton, rice growing and municipal areas. the eluents were analyzed with high performance liquid chromatography (hplc) using methanol (100%) as mobiles phase at different uv-visible wavelengths. ddt ...

ABSTRACT The nature and geometry of the accretion flow in low/hard state black hole binaries is currently controversial. While most properties are generally explained truncated disc/hot inner model, detection a broad residual around iron line argues for strong relativistic effects from an untruncated disc. Since spectral fitting alone somewhat degenerate, we combine it with additional informati...

The biokinetics of p,p'-dichlorodiphenyltrichloroethane (DDT) and its metabolites, p,p'-dichlorodiphenydichloroethylene (DDE) and p,p'-dichlorodiphenyldichloroethane (DDD), in the green-lipped mussel Perna viridis were characterized in this study. We exposed the mussels to DDT in aqueous or dietary sources and then compared and evaluated the absorption, accumulation, distribution and eliminatio...

The insecticide DDT is still used in specific areas of South Africa for indoor residual spray (IRS) to control malaria vectors. Local residents could be exposed to residues of DDT through various pathways including indoor air, dust, soil, food and water. The aims of this study were to determine the levels of DDT contamination, as a result of IRS, in representative homesteads, and to evaluate th...

We numerically study the long-term evolution of the accretion disc around the neutron star in a coplanar Be/X-ray binary with a short period and a moderate eccentricity. From three dimensional Smoothed Particle Hydrodynamics simulations, we find that the disc evolves through three distinct phases, each characterized by different mass accretion patterns. In the first ”developing phase”, the disc...

DDT was commercially introduced as an insecticide in the 1940s. Technical DDT contains 65 – 80 % p,p’-DDT. Other important constituents in the technical grade products are o,p’-DDT, p,p’-DDE and p,p’-DDD. The latter two compounds (along with their ortho, para analogues formed from o,p’-DDT) are also the major breakdown products in biological systems. Unless otherwise stated in this opinion, “DD...

Until the 1990s the 1,1,1-trichloro-bis-2,2'-(4chlorophenyl) ethane (DDT) was sprayed in the walls of the house along the Madeira River basin, Brazilian Amazon, a region well known for its large number of malaria cases. In 1910, Oswaldo Cruz described the presence of malaria in 100% of the population living in some localities from the Madeira River basin. Data available in the literature point ...

INTRODUCTION: DDT is an organochlorine insecticide used mainly to control mosquito-borne malaria; use on crops has generally been replaced by less persistent insecticides (79). It was extensively used during the Second World War among Allied troops and certain civilian populations to control insect typhus and malaria vectors, and was then extensively used as an agricultural insecticide after 19...

background: ninety percent of all people sometimes during their lives experience low back pain, and 30-40% develops radicular leg pain with the sciatica characteristics. although for clinical diagnosis of lumbar disc herniation (ldh) straight leg raising (slr) test in 85-90% of cases indicates ldh, but in our practice with ldh patients this test is frequently negative despite radicular leg pain...