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PubMedDate not supplied

Starting over at St. Jude.

Its $127 million expansion project will be complete in 1995 and will be six times larger than when it opened in 1962; almost none of the original building will remain.

Cancer Care Facilities↗
PubMedDate not supplied

Chlorine emissions from a medical waste incinerator.

Chloride/chlorine emissions from a hospital's medical waste incinerator were quantified in conjunction with a particulate emission stack test. Chlorine emissions averaged 100.5 mg/m3 with a standard deviation of 72 mg/m3 for five sample runs. It was estimated that the plastic content of the waste burned varied up to about 30%. Since, in general, emission standards for chlorine from medical waste incinerators do not exist, a simple diffusion model technique is suggested to estimate a safe distance to locate a medical waste incinerator from occupied buildings.

Air Pollution↗
PubMed1991

Convenient care a top priority for new center.

One of the nation's largest academic medical centers is taking steps to ensure that when its new ambulatory care center opens next year, patients will spend very little time in waiting rooms or registration areas. Johns Hopkins' new $140 million ambulatory care center will consolidate outpatient services now scattered in six buildings.

Academic Medical Centers↗
PubMed1989

Ketone body production and disposal: effects of fasting, diabetes, and exercise.

Turnover studies performed during progressive fasting in normal subjects indicate that the production rate and the concentration of KB rise markedly during the early phase of fasting and start reaching a plateau after about 5 days. In addition to increased production, a reduction in the metabolic clearance rate of KB contributes to the hyperketonemia. This reduced metabolic clearance rate reflects essentially the progressive saturation of muscular ketone uptake that occurs with increasing ketonemia. The hormonal and metabolic environment of fasting plays only a minor role in this process, since a fall in KB metabolic clearance similar to that observed during fasting is observed if hyperketonemia is artificially induced in the postabsorptive state by the infusion of exogenous ketones. As extraction of KB by muscle becomes limited during ongoing fasting, KB are preferentially taken up by the brain to serve as a substrate replacing glucose. The remarkable stability of ketonemia during prolonged fasting is maintained through the operation of a negative feedback mechanism whereby KB tend to restrain their own production rate. The antilipolytic and insulinotropic effects of KB are instrumental in this process. This homeostatic mechanism maintains ketogenesis only slightly above the maximal metabolic disposal rate, the difference corresponding to urinary excretion, which is always below 10% of total turnover under physiologic conditions. When type I insulin-deprived diabetic patients are compared at the same KB concentration with control subjects with fasting ketosis, the characteristics of KB kinetics are comparable in the two groups. The maximal KB removal capacity is identical in the two situations, and it is not possible to identify a ketone removal defect specific to diabetes. Thus, these data favor the concept that excessive production of KB represent the main factor leading to uncontrolled hyperketonemia. It should be realized that a production exceeding only slightly that prevailing during prolonged fasting is sufficient to cause a progressive build-up in concentration, leading to uncontrolled diabetic ketosis. In the overnight-fasted state, a prolonged exercise (2 h) performed at moderate intensity (50% VO2 max) stimulates the capacity of muscle to extract ketones from blood as evidenced by a stimulation of the metabolic clearance rate.(ABSTRACT TRUNCATED AT 400 WORDS)

Diabetes Mellitus↗
PubMed1995

Techniques in mammalian genome mapping.

Increasing emphasis is being given to genomic cloning using Escherichia coli vectors of intermediate insert capacity, such as bacteriophage P1, P1-derived artificial chromosomes and the F factor based bacterial artificial chromosomes. These vectors are being used in addition to yeast artifical chromosomes (YACs) in recognition of the difficulties encountered with YAC stability and with handling of YAC DNAs (problems that will not easily be overcome). Nonetheless, YACs remain the most practical cloning system for global contig building. Efforts are currently under way to produce YAC contigs that represent the human and mouse genomes, and these will increasingly exploit extensive anchoring to detailed genetic maps. Intermediate capacity clone collections based on YAC contigs will follow, enabling the compilation of mapped gene catalogues. In this way, the era of big gene hunts will draw to a close.

Animals↗
PubMedDate not supplied

Role-modeling healthy behavior: peer counseling for pregnant and postpartum women in recovery.

The utilization of paraprofessional peer counselors for pregnant and postpartum women in recovery represents a nonthreatening and innovative departure from conventional medical and social service models. However, it must be acknowledged that these are women in recovery confronting the same daily stresses as their clients. In essence, they require the same social support services as their clients. Therefore, program planners must be reminded to build in the necessary social support systems for them at the outset. The rewards in terms of the peer counselors' capacity to engage and retain women with whom they can identify and help is well worth the investment. As a consequence of extensive community outreach and supportive activities undertaken by peer counselors, barriers to client receptivity may be removed, greater compliance and service utilization will be achieved, and the potential for successful recovery will be enhanced.

Alcoholism↗
PubMed2002

Thermal regime database of Ignalina Nuclear Power Plant cooler--Lake Drŭksiai.

The hydrothermal regime of the Lake Drŭksiai has changed when it became a cooler for the Ignalina NPP. For 18 years, 1981-1998, the hydrologists from Lithuanian Energy Institute have been investigating thermal state of the lake. The water temperature data owned by the laboratory is unique as it has been collected sequentially during 18 yr under wide range of different weather and INPP capacity conditions. Gathered information consists of lake surface temperature, related meteorological data and INPP operating capacity data. This information enables not only to state that the relationship between hydrological and meteorological/INPP capacity data exists (that is already known) but also to analyze its character. The aim of this study was to build computer database for data analysis and management as well as to create digital maps for further modelling and forecasting. ArcView software package was used for data set management and visualization.

Databases, Factual↗
PubMed1998

A novel portable perfused manometric system for recording of small intestinal motility.

The development of solid-state catheters with miniature pressure transducers and portable dataloggers with a large memory capacity has allowed recording of gastrointestinal motility in ambulant subjects. Developments in silicone rubber extrusion technology made it possible to build a perfused manometric system, using a perfused manometric assembly requiring a low volume of perfusate. In the present study the feasibility of recording and automated analysis of small intestinal motility using a perfused multiple lumen manometric system was evaluated in seven healthy volunteers. Pressures were recorded from 12 sideholes arranged in four clusters spaced at 10-cm intervals from the catheter tip. Each channel was perfused at 0.15 mL min-1 with degassed water by a portable, low-compliance, perfusion pump. The 12 sidehole recording channels were connected to external transducers mounted on a belt. Pressure data were stored in two dataloggers. Motility was recorded in the sitting (30 min), and supine (30 min) position, during walking (30 min) and postprandially (90 min). Using purpose-built software baseline variations were corrected for and manometric variables (number of pressure waves, mean amplitude and motility index) calculated. Bench testing of the manometric assembly showed a median baseline pressure offset of 4.2 kPa (range 3.7-10.1) and upon occlusion a rise rate of 27.8 kPa sec-1 (range 19.7-30.8). Changes in body position affected baseline pressures so that compared to the supine position changes in baseline pressure varied between 1.5 +/- 0.7 kPa and 1.9 +/- 0.6 kPa during sitting (P < 0.02), and between 1.7 +/- 0.7 kPa and 1.5 +/- 0.9 kPa during walking (P < 0.03). Manometric recordings obtained during the fasting period showed an increase in small intestinal motor activity during walking. In the postprandial period no differences in motility variables were observed within one cluster and in time. Recording of small intestinal motility with a multiple-channel silicone rubber manometric assembly with a portable perfusion system is a feasible technique which is relatively inexpensive. Computer-assisted data processing allows for adequate elimination of artefacts and automated numerical analysis.

Adult↗
PubMed2006

Pseudogene.org: a comprehensive database and comparison platform for pseudogene annotation.

The Pseudogene.org knowledgebase serves as a comprehensive repository for pseudogene annotation. The definition of a pseudogene varies within the literature, resulting in significantly different approaches to the problem of identification. Consequently, it is difficult to maintain a consistent collection of pseudogenes in detail necessary for their effective use. Our database is designed to address this issue. It integrates a variety of heterogeneous resources and supports a subset structure that highlights specific groups of pseudogenes that are of interest to the research community. Tools are provided for the comparison of sets and the creation of layered set unions, enabling researchers to derive a current 'consensus' set of pseudogenes. Additional features include versatile search, the capacity for robust interaction with other databases, the ability to reconstruct older versions of the database (accounting for changing genome builds) and an underlying object-oriented interface designed for researchers with a minimal knowledge of programming. At the present time, the database contains more than 100,000 pseudogenes spanning 64 prokaryote and 11 eukaryote genomes, including a collection of human annotations compiled from 16 sources.

Databases, Genetic↗
PubMed2006

Volatile organic compound (VOC) adsorption on material: influence of gas phase concentration, relative humidity and VOC type.

UNLABELLED: This paper presents the results of a factorial experiment design analysis to investigate volatile organic compounds (VOC) adsorption on a ceiling tile. The impacts of three factors, VOC gas phase concentration, relative humidity, and VOC type, as single parameters and as a combination, on adsorption have been investigated. Cyclohexane, toluene, ethyl acetate, isopropyl alcohol and methanol were the five VOCs used in this study. A factor significant level was determined through evaluating its F value and comparing it with the critical value of F distribution at 95% confidence level. It was found that: (i) neither the relative humidity and gas phase concentration nor any interaction effect between them had significant impacts on toluene adsorption on the ceiling tile; (ii) the adsorption isotherm appeared to be linear for the non-polar compounds and non-linear for the semi-polar and polar compounds; (iii) no significant impact of relative humidity on adsorption was observed for most VOC compounds except for methanol; and (iv) the ceiling tile had the highest adsorption capacity toward the polar compounds, followed by the aromatic compounds and aliphatic compounds. In addition, the statistical analysis regarding the experimental results of toluene as a single compound or as a part of a mixture showed that toluene adsorption capacity on the ceiling tile as a single compound was higher than as a part of a mixture. PRACTICAL IMPLICATIONS: Building materials and furnishings may act as source and sink of VOCs in the indoor environment. In this study, a factorial experiment design analysis technique was used to show the impact of three factors, VOC gas phase concentration, relative humidity, and VOC type, as single parameters and as a combination, on the adsorption process (sink effect). The aim was to better understand the interaction between these parameters and to verify the common assumptions made in the model development and measurement of indoor air quality.

Adsorption↗