Put your feet up: The impact of personality traits, job pressure, and social support on the need for recovery after work.

Unlabelled: The need for recovery after work (NFR) is an important warning of work-related fatigue. NFR is linked to prolonged work-related efforts and depletion of resources, creating a need for temporary respite from work demands. The aim of the current study was to investigate the relationships between NFR and the five-factor model (FFM), comprising the personality traits of emotional stability (ES), extraversion (E), agreeableness (A), conscientiousness (C), and openness to experience (O).

An evaluation of the residual toxicity and chemistry of a sodium hydroxide-based ballast water treatment system for freshwater ships.

Nonnative organisms in the ballast water of freshwater ships must be killed to prevent the spread of invasive species. The ideal ballast water treatment system (BWTS) would kill 100% of ballast water organisms with minimal residual toxicity to organisms in receiving waters. In the present study, the residual toxicity and chemistry of a BWTS was evaluated.

Bactericidal efficacy of elevated pH on fish pathogenic and environmental bacteria.

Ship ballast water is a recognized medium for transfer and introductions of nonindigenous species. There is a need for new ballast water treatment methods that effectively and safely eliminate or greatly minimize movements of these species. The present study employed laboratory methods to evaluate the bactericidal efficacy of increased pH (pH 10.

Toxicity of elevated partial pressures of carbon dioxide to invasive New Zealand mudsnails.

The authors tested the efficacy of elevated partial pressures of CO(2) to kill invasive New Zealand mudsnails. The New Zealand mudsnails were exposed to 100 kPa at three water temperatures, and the survival was modeled versus dose as cumulative °C-h. We estimated an LD50 of 59.

Effect of temperature, hydraulic residence time and elevated PCO2 on acid neutralization within a pulsed limestone bed reactor.

Limestone has potential for reducing reagent costs and sludge volume associated with treatment of acid mine drainage, but its use is restricted by slow dissolution rates and the deposition of Fe, Al and Mn-based hydrolysis products on reactive surfaces. We evaluated a pulsed limestone bed (PLB) reactor (15 L/min capacity) that uses a CO2 pretreatment step to accelerate dissolution and hydraulic shearing forces provided by intermittent fluidization to abrade and carry away surface scales. We established the effects of hydraulic residence time (HRT, 5.

Acid neutralization within limestone sand reactors receiving coal mine drainage.

Pulsed bed treatment of acid mine drainage (AMD) uses CO2 to accelerate limestone dissolution and intermittent fluidization to abrade and carry away metal hydrolysis products. Tests conducted with a prototype of 60 L/min capacity showed effective removal of H+ acidity over the range 196-584 mg/L (CaCO3) while concurrently generating surplus acid neutralization capacity. Effluent alkalinity (mg/L CaCO3) rose with increases in CO2 (DC, mg/L) according to the model Alkalinity=31.

Physiological and behavioral responses of stonefly nymphs to enhanced limestone treatment of acid mine drainage.

A new acid mine drainage (AMD) treatment system uses pulsed, fluidized beds of limestone, and carbon dioxide pretreatment of influent AMD, to enhance limestone neutralization of AMD. We conducted laboratory studies to evaluate the behavior and physiology of larval stoneflies (Pteronarcys proteus, Plecoptera) exposed to effluents produced by the treatment system. Survival, sodium balance, drift, and feeding responses by P.

Oxamniquine treatment for schistosomal polyposis: a 1-2 year follow-up study.

A follow-up was carried out into the study of schistosomal colonic polyposis reported in the last article. Eighteen patients with schistosomal colonic polyposis were treated with oxamniquine and their progress was evaluated for 2-3 weeks after treatment, at 3 months and at 12-24 months. Sigmoidoscopy to examine mucosa on the polyps and barium enemata to determine the size and number of polyps showed variable success, but treatment with oxamniquine produced no untoward side effects.

Schistosomal colonic polyposis: clinical, radiological and parasitological study.

One hundred and eight male Egyptian farmers with schistosomal colonic polyposis were reviewed. All patients gave a history of bloody diarrhoea. Sixty-one patients presented with finger clubbing, and four of these patients had painful, tender and swollen wrist, knee and ankle joints.

Correlates of weight loss in treatment and at follow-up.

Results showed that a Navy-sponsored weight-reduction program was relatively successful in helping participants lose weight during treatment and throughout a one-year follow-up. Of the 531 women and 155 men who reported a mean weight loss of 22 lb and 28 lb, respectively, 32 per cent of the women and 29 per cent of the men responded that no weight had been gained during treatment and follow-up. Regression analyses identified predictors of weight loss to be a self-reported improvement in health status, a history of few dieting attempts, and adult onset of obesity.

Ameobic liver abscess presenting as fever of unknown origin (FUO). Serology, isotope scanning and metronidazole therapy in diagnosis and treatment.

In a study of obscure fevers in Cairo, Egypt, 24 cases of hepatic amoebiasis were diagnosed during a 3-year period from 1977-1980. The counterimmunoelectrophoresis amoebic serologic test was positive in 20 of the 24 patients and was very useful in confirming the diagnosis. The four patients in whom the test was negative had been ill for between 1 and 5 months and had been treated with antibiotics and amoebicidal drugs.

Serum enzyme tests in hepatosplenic schistosomiasis.

The serum activities of monoamine oxidase (MAO), gamma-glutamyl transferase (GGT) and glutamic dehydrogenase (GDH) enzymes were measured in 25 patients with Schistosoma mansoni infection (Group I), 26 patients with schistosomal hepatosplenomegaly and ascites (Group II) and 21 normal controls. The activities of these enzymes were compared with those of serum aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP). The mean levels of MAO, GGT and GDH of Group I were not significantly different from controls.

Treatment of schistosomiasis mansoni with oxamniquine--five years' experience.

During a 5-year period (1975-1980), 171 male patients aged eight to 58 years infected with Schistosoma mansoni have been treated with oxamniquine on an in-hospital basis. The patients comprised three clinical groups--uncomplicated S. mansoni infection, colonic polyposis due to S.

Correlates of obesity.

Designed to create composites of eating behavior questionnaire items and determine their relationship to an obesity index within three subsamples of participants in three Navy-sponsored weight-reduction programs (N = 1,878). After item and scale analyses were performed on questionnaire items that pertained to eating behaviors, history of weight problems, activities, and feelings about food and dieting, scores for the resultant composites were computed for individuals within the three subsamples. Results of multiple-regression analyses indicated that the strongest correlates of obesity within each subsample were the Overweight History, Food Obsession, and Activities composites; the multiple R was .

Chronic hepatitis B antigenaemia in patients with hepatosplenic schistosomiasis.

Thirty-five male patients with decompensated hepatosplenic schistosomiasis were longitudinally studied and divided into 3 Groups; with hepatitis B surface antigen (HBsAg) or antibody (anti-HBs) and a control group negative to both. Patients with HBsAg were persistently carrying the antigen as estimated by radioimmunoassay (RIA) for up to 3 years and when compared with the other 2 groups, they had significantly higher serum glutamic transaminases, their liver biopsy showed more destructive liver cell lesions in the form of chronic active hepatitis or liver cirrhosis, they were refractory to diuretic treatment and had higher mortality rate (64% in 3 years compared to 22% and 33% in the other 2 groups). The majority of patients with dual infection are at greater risk in spreading hepatitis B as they proved to carry the 'e' antigen.

Effects of the immunosuppressive drug niridazole in isogeneic and allogeneic mouse tumor systems in vivo.

In both isogeneic (Sarcoma 1 in A/JAX mice) and allogeneic (Sarcoma 180 in C57BL/6 mice) mouse tumor systems, treatment of the tumor-bearing mice with niridazole, an antiprarasitic drug, known to be a potent suppressor of cell mediated but not humoral immunity caused enhancement of metastases to regional popliteal nodes. Niridazole also inhibited tumor growth in vivo, as manifested by a significant decrease in the weight of the primary tumors. The enhancement of metastases is attributed to the suppression of cell-mediated immunity by the drug, but the mechanism of tumor-growth inhibition is not yet clear.