El Diclorodifeniltricloroetano (DDT) y Hexaclorociclohexano (HCH) son disruptores endócrinos cuya presencia en la leche representa un riesgo para salud. Existe evidencia de que pasteurización disminuye o incrementa concentración plaguicidas organoclorados productos lácteos. La presente investigación evaluó el efecto a 63 °C 30 min-1 73 15 seg-1 las concentraciones DDT, HCH sus metabolitos bovin...

INTRODUCTION The use of p,p'-dichlorodiphenyltrichloroethane (DDT) has been banned since the late 1970s due to its toxicity. However, its long half-life makes it persistent in the environment and, consequently, almost everyone has DDT residues in the body. Human milk constitutes an ideal non-conventional matrix to investigate environmental chronic exposure to organochlorine compounds (OCs) resi...

BACKGROUND The origin of the fluid and precise pathophysiology of optic pit maculopathy remain unclear. It has been suggested that submacular fluid originates either from vitreous or cerebrospinal fluid. We report a case of optic pit maculopathy which was unsuccessfully treated with vitrectomy and internal limiting membrane (ILM) peeling, and subsequently resolved with revision of vitrectomy an...

Estimation of DDT by GLC (gas liquid chromatography) in K.U. strain of Culex fatigans L., shows that 59.68 ng DDT is found after the treatment with 0.175 ppm. In G.I. strain 18.3 ng DDT is found after treatment with 0.325 ppm whereas 4.35 ng DDT is found in L.Y. strain after the treatment with 0.425 ppm.

Estrogens play a critical role in the etiology of found breast cancer. Estradiol promotes the growth of breast cancer cells in vivo and in vitro. Exogenous estrogens in both the environment and in the human diet increase the growth of breast cancer cells in vitro. A role for xenoestrogens in breast cancer etiology has been proposed but remains controversial. We examined the effects of the xenoe...

BACKGROUND AND OBJECTIVES Methicillin-resistant Staphylococcus aureus (MRSA) is a well-known pathogen with a worldwide distribution. Given the increasing rate of MRSA infections, implementing of reliable, accurate and rapid testing for diagnosis of MRSA is necessary. The aim of this study was to compare four diagnostic methods for detection of MRSA isolates. MATERIALS AND METHODS From Decembe...

BACKGROUND & OBJECTIVES Members of the genus Acinetobacter are an important cause of nosocomial infections and with widespread resistance to various antibiotics. Extended spectrum beta lactamase (ESBL) associated resistance among Acinetobacter species is now known. The aim of this study was to speciate clinical isolates of Acinetobacter, analyze their resistance patterns, identify the productio...

BACKGROUND Although DDT [1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane] has been banned in many countries since the 1970s, it may still pose a risk to human respiratory health. In agriculture, DDT exposures have been associated with asthma and chronic bronchitis. However, little is known about the effect of DDT on lung function. METHODS We used data on 1,696 participants 20-79 years of age fr...

Double-roll rotary forging is an emerging plastic forming technology based on forging. Owing to the advantages of labor saving, small eccentric load, low noise and vibration, good uniformity, high surface quality, material it very promising for fabrication large-diameter thin-walled disc. To date, a few relevant researches double-roll metal discs have been reported, mechanisms process disc work...

BACKGROUND While considerable scientific effort has been devoted to studying how birds navigate over long distances, relatively little is known about how targets are detected, obstacles are avoided and smooth landings are orchestrated. Here we examine how visual features in the environment, such as contrasting edges, determine where a bird will land. METHODOLOGY/PRINCIPAL FINDINGS Landing in ...