The distinctly different, εNd(0) values of the Atlantic, Indian, and Pacific Oceans requires that the residence time of Nd in the ocean (i.e., τNd) be on the order of, or less than, the ocean mixing time of ∼500–1500 yr. However, estimates of τNd, based on river influxes, range from 4000 to 15,000 yr, thus exceeding the ocean mixing time. In order to reconcile the oceanic Nd budget and lower th...

In recent years there has been considerable concern over the ability of substances discharged into the environment to disrupt the normal endocrine function of wildlife. In particular, the apparent widespread feminization of male fish in rivers has received significant attention from regulators in the United Kingdom, the United States, Europe, and Japan. The U.K. and European epidemiological dat...

A 36-year-old woman came to our OPD with presentation of a solitary, indurated, nonpainful subcutaneous plaque on the left nipple area for 2 months. There was neither discharge nor ulceration. Axillary's lymph node was not palpable. Histopathological examination directed the diagnosis to microcystic adnexal carcinoma. A wide excision was performed with negative margin. The preoperative and intr...