Experiments showed that attachment of bacteria to surfaces provided the greatest increase in disinfection resistance. Attachment of high nutrient grown, unencapsulated, Klebsiellapneumoniae to glass ...microscope slides afforded the microorganisms as much as a 150 fold increase in disinfection resistance. Other mechanisms which increased disinfection resistance included: the age of the biofilm, bacterial encapsulation and previous growth conditions (e.g. growth medium, and growth temperature). These factors increased chlorine resistance from two to ten fold. The choice of disinfectant residual was shown to influence the type of resistance mechanism observed. Disinfection by free chlorine was affected by surfaces, age of the biofilm, encapsulation and nutrient effects. Disinfection by monochloramine, however, was only affected by surfaces. Importantly, the research showed that these resistance mechanisms were multiplicative (e.g. the resistance provided by one mechanism could be multiplied by the resistance provided by a second). These results provide important insights to understand the survival of bacteria in chlorinated drinking water supplies.
Mucormycosis is a rare fungal disease most often encountered in patients who are diabetic, immunocompromised, severely burned, or who have a history of intravenous drug abuse. Intracranial ...presentation includes the isolated cerebral and the more common rhinocerebral forms. The computed tomography picture in mucormycosis is well documented. The magnetic resonance (MR) findings associated with mucormycosis have not been previously described. We report a case of rhinocerebral mucormycosis in a poorly controlled diabetic man where the MR findings of cavernous sinus thrombosis and thrombosis of the cavernous portion of the internal carotid artery demonstrated progression of the patient's disease in spite of his stable clinica course. The results of the MR findings directly altered the patient's therapy, thus leading to a favorable outcome.
A retrospective analysis of 104 chest radionuclide angiography (CRNA) studies establishes the utility of this procedure in the evaluation of pulmonary malignancies and benign masses. Remarkable ...abnormalities in the perfusion of the lungs were identified in 36 (58%) of 62 cases that were not predictably normal or predictably abnormal form the clinical setting. While 60 of these 62 cases involved malignancy being evaluated for metastases, only 21 (34%) had metastases identified by radionuclide bone or liver-spleen scintigraphy. In addition to diagnosis of superior vena cava obstruction, the CRNA may have a more frequent application as an adjunct to routine scintigraphic studies directed to the identification of metastatic disease.
We present a suite of 18 synthetic sky catalogs designed to support science analysis of galaxies in the Dark Energy Survey Year 1 (DES Y1) data. For each catalog, we use a computationally efficient ...empirical approach, ADDGALS, to embed galaxies within light-cone outputs of three dark matter simulations that resolve halos with masses above ~5x10^12 h^-1 m_sun at z <= 0.32 and 10^13 h^-1 m_sun at z~2. The embedding method is tuned to match the observed evolution of galaxy counts at different luminosities as well as the spatial clustering of the galaxy population. Galaxies are lensed by matter along the line of sight --- including magnification, shear, and multiple images --- using CALCLENS, an algorithm that calculates shear with 0.42 arcmin resolution at galaxy positions in the full catalog. The catalogs presented here, each with the same LCDM cosmology (denoted Buzzard), contain on average 820 million galaxies over an area of 1120 square degrees with positions, magnitudes, shapes, photometric errors, and photometric redshift estimates. We show that the weak-lensing shear catalog, redMaGiC galaxy catalogs and redMaPPer cluster catalogs provide plausible realizations of the same catalogs in the DES Y1 data by comparing their magnitude, color and redshift distributions, angular clustering, and mass-observable relations, making them useful for testing analyses that use these samples. We make public the galaxy samples appropriate for the DES Y1 data, as well as the data vectors used for cosmology analyses on these simulations.
Medicine of all the branches of science has lagged behind the power curve in ages past and is doing so again in the era of information, frequently using the excuse that medicine is an art than a ...science. In alarming contrast, the general population has come to expect immediacy in all aspects of life as well as death. They are clearly frustrated with the inability of purveyors of healthcare to answer their need for immediacy and resolution. This manifests itself in the increasing diatribe against health maintenance organizations and the growth in tort claims, the widening chiasm between the healthcare providers and their beneficiaries.
Three case reports of spinal vascular tumors illustrate the need for well-organized and thorough neuroradiological and neurosurgical planning to achieve an initial cure without delay and to avoid ...inadequate operative procedures.
Four methods of Tc-99m red blood cell labeling were tested for labeling efficiency and kinetics in normal adults. From a perspective of the gastrointestinal hemorrhage study, the in vivo method was ...least appropriate because of extravascular loss of pertechnetate. The modified in vitro method was disadvantageous because of long labeling intervals in a syringe fixed to the patient's forearm (45 minutes). The pure in vitro methods produced the highest labeling efficiency (95% +) and are preferred by the authors.
Biliary scintigraphy. The "hot rim" sign Cawthon, M A; Brown, D M; Hartshorne, M F ...
Clinical nuclear medicine,
1984-November, Letnik:
9, Številka:
11
Journal Article
Recenzirano
A new cholescintigraphic finding, the "hot rim" sign, is reported in a case of acute cholecystitis. Local inflammation in the gallbladder fossa may be the cause of this phenomenon.
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