The purpose of this study was to investigate the consistency of rectal sparing using multiple periodic quality assurance computerized tomography imaging scans (QACT) obtained during the course of proton therapy for patients with prostate cancer treated with a hydrogel spacer. Forty-one low- and intermediate-risk prostate cancer patients treated with image-guided proton therapy with rectal space...

Vertical and temporal variations of acid-volatile sulfides (AVS) and simultaneously extracted metals (SEM) in sediment can control biological impacts of metals. To assess the significance of these variations in field sediments, sediments spiked with cadmium, copper, lead, nickel, and zinc were deployed in Narragansett Bay for four months and recolonization by benthic organisms investigated. In ...

aflatoxin m1 (afm1) is an important mycotoxin frequently found in milk and dairy products. dairy products and colostrum may be contaminated by aflatoxin m1 when dairy cattle have fed with aflatoxin b1-contaminated feeds. this study was undertaken in a dairy farm around tehran province to determine the presence and level of aflatoxin m1 (afm1) in spray dried and lyophilized colostrum samples. in...

We report an HIV-HCV-HSV-2-coinfected man, who infected all of five sequential female sexual partners within seven years. HIV-RNA in semen was unusually high and exceeded that in plasma by one log10. Screening for sexually transmitted diseases remained negative with the exception of HSV-2-seropositivity. Recurrent asymptomatic genital herpes might explain the patient's increased HIV-RNA sheddin...

A simple bound is presented for the probability that the sum of nonnegative independent random variables is exceeded by its expectation by more than a positive number t. If the variables have the same expectation the bound is slightly weaker than the Bennett and Bernstein inequalities, otherwise it can be significantly stronger. The inequality extends to one-sidedly bounded martingale differenc...

background: the concentration of heavy metals in drinking water is very important. objectives: to to evaluate the chemistry of some heavy metals in surface drinking water of dakahlia governorate, egypt. methods: 51 surface drinking water samples were collected from the main surface water stations and compact units in october 2009 and analyzed chemically. 26 water samples were analyzed by atomic...

in this study mercury was determined in canned tuna fish produced and distributed in iran after digestion by the standard methods of aoac. mercury contents in fish and canned tuna fish were determined by cold vapor atomic absorption spectrophotometry. the metal contents expressed in mg/kg wet weight for mercury varied from 0.017 to 0.394 (average of 0. 089) and 0.023 to 0.529 (average of 0.146)...