Miracle-dz/UniFAR-FTUs huggingface dataset:
Feeding experience affects web relocation and investment in web threads in an orb-web spider, Cyclosa argenteoalba


Orb-web spiders often relocate their webs when they assess a web site as prey poor. When a spider spins its web at a new site, it may not be able to assess the prey availability at the site accurately on the first day, owing to stochastic variation in foraging success, but it is gradually able to make an assessment. Therefore, a spider's foraging behaviour may change according to how long it has been at its current web site. To test this possibility, we conducted a prey removal experiment, with the spider Cyclosa argenteoalba, to compare the response to prey deprivation of spiders that were on new sites with that of spiders that had been at a site for several days. Spiders in both groups had a higher relocation rate than the natural rate, but more spiders in the new-site group relocated their webs. Spiders thus seemed to use previous experience of prey capture at a web site to decide whether to relocate their web. The total length of silk thread in a web was greater on the second day at a new web site than on the first. We suggest that spiders minimize their investment in web threads until they are certain that the web site is prey rich. Copyright 1999 The Association for the Study of Animal Behaviour.
Correlating reported fever in young infants with subsequent temperature patterns and rate of serious bacterial infections

A retrospective study was performed of 292 infants younger than 2 months of age with a history of fever who received a standardized evaluation and were admitted to the hospital for possible sepsis. The purpose was to correlate the presence of this symptom with subsequent temperature patterns and the rate of serious bacterial infections (SBI). Caretakers reported fever per rectum via thermometer in 244 infants and tactile fever in 48 infants. Of 244 infants with reported fever per rectum, 224 (92%) had fever on presentation or during the subsequent 48 hours of hospitalization; by contrast, only 22 of 48 infants (46%) with reported tactile fever had fever on presentation or during the subsequent 48 hours of hospitalization (P < 0.0001). Of 26 infants with tactile fever who were afebrile on presentation, none had subsequent fever during hospitalization and only 1 (3.8%) had SBI (urinary tract infection); of 40 infants with reported fever per rectum who were afebrile on presentation, 8(20%) had subsequent fever during hospitalization and 4(10%) had SBI (meningitis, bacteremia, osteomyelitis and urinary tract infection). There were a total of 19 infants (6.5%) with SBI; although 5 (27%) were afebrile on presentation (4 with reported fever per rectum, 1 with tactile fever), all 19 exhibited abnormal clinical and/or laboratory features on evaluation which were suggestive of underlying serious infection. Management decisions for young infants with reported fever should be based on both clinical findings and temperaturepattern profiles.
Technical efficiency and total factor productivity in the Kazakh banking industry

This paper investigates the technical efficiency and productivity of Kazakh commercial banks over the period 2000–2013. Non-parametric approaches, namely the Data Envelopment Analysis and the Malmquist index are employed to calculate technical efficiency and productivity. In addition, a second-stage regression is also estimated to identify the determinants of efficiency. The results indicate that banks in Kazakhstan operate below their optimum levels, with larger banks being more efficient than smaller ones. The results also indicate the presence of economies of scale for banks of all sizes. The efficiency of banks is found to be significantly and positively related to profitability, capitalisation, bank size, and liquidity. The results further indicate that Kazakh banks seem to have experienced a significant productivity growth over the sample period.
Lactobacillus bulgaricus, Lactobacillus rhamnosus and Lactobacillus paracasei Attenuate Salmonella Enteritidis, Salmonella Heidelberg and Salmonella Typhimurium Colonization and Virulence Gene Expression In Vitro

Salmonella Enteritidis (SE), Salmonella Typhimurium (ST), and Salmonella Heidelberg (SH) have been responsible for numerous outbreaks associated with the consumption of poultry meat and eggs. Salmonella colonization in chicken is characterized by initial attachment to the cecal epithelial cells (CEC) followed by dissemination to the liver, spleen, and oviduct. Since cecal colonization is critical to Salmonella transmission along the food chain continuum, reducing this intestinal association could potentially decrease poultry meat and egg contamination. Hence, this study investigated the efficacy of Lactobacillus delbreuckii sub species bulgaricus (NRRL B548; LD), Lactobacillus paracasei (DUP-13076; LP), and Lactobacillus rhamnosus (NRRL B442; LR) in reducing SE, ST, and SH colonization in CEC and survival in chicken macrophages. Additionally, their effect on expression of Salmonella virulence genes essential for cecal colonization and survival in macrophages was evaluated. All three probiotics significantly reduced Salmonella adhesion and invasion in CEC and survival in chicken macrophages (p < 0.05). Further, the probiotic treatment led to a significant reduction in Salmonella virulence gene expression (p < 0.05). Results of the study indicate that LD, LP, and LR could potentially be used to control SE, ST, and SH colonization in chicken. However, these observations warrant further in vivo validation.
Marfan Sartan: a randomized, double-blind, placebo-controlled trial.

AIMS To evaluate the benefit of adding Losartan to baseline therapy in patients with Marfan syndrome (MFS). METHODS AND RESULTS A double-blind, randomized, multi-centre, placebo-controlled, add on trial comparing Losartan (50 mg when <50 kg, 100 mg otherwise) vs. placebo in patients with MFS according to Ghent criteria, age >10 years old, and receiving standard therapy. 303 patients, mean age 29.9 years old, were randomized. The two groups were similar at baseline, 86% receiving β-blocker therapy. The median follow-up was 3.5 years. The evolution of aortic diameter at the level of the sinuses of Valsalva was not modified by the adjunction of Losartan, with a mean increase in aortic diameter at the level of the sinuses of Valsalva of 0.44 mm/year (s.e. = 0.07) (-0.043 z/year, s.e. = 0.04) in patients receiving Losartan and 0.51 mm/year (s.e. = 0.06) (-0.01 z/year, s.e. = 0.03) in those receiving placebo (P = 0.36 for the comparison on slopes in millimeter per year and P = 0.69 for the comparison on slopes on z-scores). Patients receiving Losartan had a slight but significant decrease in systolic and diastolic blood pressure throughout the study (5 mmHg). During the study period, aortic surgery was performed in 28 patients (15 Losartan, 13 placebo), death occurred in 3 patients [0 Losartan, 3 placebo, sudden death (1) suicide (1) oesophagus cancer (1)]. CONCLUSION Losartan was able to decrease blood pressure in patients with MFS but not to limit aortic dilatation during a 3-year period in patients >10 years old. β-Blocker therapy alone should therefore remain the standard first line therapy in these patients.
BRAF T1799A Mutation Occurring in a Case of Malignant Struma Ovarii

Struma ovarii is an extremely rare tumor that occasionally undergoes malignant transformation. Because struma ovarii is composed of thyroid tissue, it is conceivable that the pathogenetic events involved in thyroid follicular transformation may take place also in struma ovarii. The authors describe a case of a classical variant of papillary thyroid carcinoma arising in a struma ovarii of a 22-year-old female. The tumor was heterozygous for BRAF T1799A mutation. No ret/ PTC-1 or ret/PTC-3 rearrangements were detected. This finding would suggest that malignant struma ovarii is similar histologically and genetically to primary papillary thyroid carcinoma.
Preliminary evidence of differential relations between prefrontal cortex metabolism and sustained attention in depressed adults with bipolar disorder and healthy controls.

OBJECTIVES To assess the relations between sustained attention as assessed by the Continuous Performance Test (CPT) and subgenual and dorsolateral prefrontal cortex metabolism in depressed patients with bipolar disorders and healthy controls. DESIGN Cross-sectional case-control design. METHODS Cerebral metabolic rates were assessed with 18F-fluoro-deoxyglucose and positron emission tomography (PET) in the regions of interest defined on co-registered structural magnetic resonance images in eight medication-free, depressed bipolar disorder patients and 27 healthy control participants. PET scans were obtained in a resting state and the CPT was administered within 1 week of the PET scan. RESULTS Although there were no statistically significant differences in performance on the CPT or in cerebral metabolism between the two groups, our analyses revealed differential relations between the CPT and metabolism across the groups. Decreased subgenual prefrontal metabolism was associated with slower hit rate reaction time and more omission errors in the bipolar group, but not the control group. Decreased dorsolateral prefrontal metabolism in the bipolar group, but not the control group, was associated with more commission errors. CONCLUSIONS This study extends previous neuroimaging findings of structural and functional relevance of the prefrontal region with attention to include depressed states in bipolar disorder. The results are consistent with interpretations that decreased prefrontal activity may represent failure to activate some areas of inhibitory control. Decreasing subgenual prefrontal cortex metabolism appears to relate to decreased attention whereas the decreased dorsolateral prefrontal cortex metabolism relates more to decreased inhibitory control.
Escape from Immune Surveillance Does Not Result in Tolerance to Tumor-Associated Antigens

Despite expression of tumor-associated or tumor-specific antigens by most tumors, evasion of protective T-cell immunity is the rule rather than the exception. Understanding whether tumor immune escape primarily represents T-cell neglect, anergy/tolerance, or quantitative limits of an existent immune response is central to developing new strategies to enhance antitumor immunity. The authors studied the immune response to MB49, a tumor that naturally expresses HY. Immune surveillance was effective following low-dose tumor inocula, since normal female mice showed a diminished incidence and slower growth rate of MB49 compared with T-cell-depleted female mice and male mice. Following high-dose tumor inoculation, females developed large, progressive tumors but continued to demonstrate immune responses to class I and class II restricted HY epitopes. The HY reactive T cells remained capable of executing HY immune responses since T cells adoptively transferred from MB49-bearing animals mediated accelerated HY skin graft rejection compared with those taken from naive mice. Thus, MB49 does not induce immune tolerance to HY but rather escapes immune surveillance largely due to quantitative limits of the immune response. Treatment of tumor-bearing animals with rhIL7 significantly increased the number of T cells responding to HY but did not alter tumor growth rate. These results demonstrate that escape from immune surveillance does not necessarily imply immune tolerance to tumor antigens and that immunotherapy need not overcome tumor-induced tolerance per se, and suggest that substantial opportunities remain in tumor-bearing hosts to amplify weak but persistent antitumor immune responses.
The many roles of family members in "family-centered care"--part I.

This article is the first in a series highlighting parental roles in family-centered care. A brief history of family-centered care from the 1960s to the present provides the context for the development of numerous roles parents have begun to play in the health care system. This background is followed by a mother's description of the steps in her own evolution as a "parent advocate. " Deborah Dokken first developed her voice in the health care system as a parent to three premature infants, one of whom survived. Dokken used the skills she developed as a NICU parent to help other families through a peer-support program. She was subsequently invited to serve on a hospital's Ethics Committee; later to participate as a co-investigator and consultant on a palliative care education project; and most recently to be a member of several federal level health care advisory committees. Several themes in her development as a parent advocate included: readiness and commitment to assume new roles; the open support of at least one care professional in each setting; the identification of roles that matched her interest, background, and skills; and a growing conviction of her ability to contribute in a holistic way. Subsequent articles in this series will introduce other parents as they describe a variety of parental roles in family-centered care. We hope that illustration of these roles will inspire further involvement of parents in the pediatric health care system, at all levels.
Implementation of a wireless sensor network for heart rate monitoring in a senior center.

OBJECTIVE Wearable sensor systems are widely used to monitor vital sign in hospitals and in recent years have also been used at home. In this article we present a system that includes a ring probe, sensor, radio, and receiver, designed for use as a long-term heart rate monitoring system in a senior center. The primary contribution of this article is successfully implementing a cheap, large-scale wireless heart rate monitoring system that is stable and comfortable to use 24 h a day. MATERIALS AND METHODS We developed new finger ring sensors for comfortable continuous wearing experience and used dynamic power adjustment on the ring so the sensor can detect pulses at different strength levels. RESULTS Our system has been deployed in a senior center since May 2012, and 63 seniors have used this system in this period. During the 54-h system observation period, 10 alarms were set off. Eight of them were due to abnormal heart rate, and two of them were due to loose probes. The monitoring system runs stably with the senior center's existing WiFi network, and achieves 99.48% system availability. The managers and caregivers use our system as a reliable warning system for clinical deterioration. CONCLUSIONS The results of the year-long deployment show that the wireless group heart rate monitoring system developed in this work is viable for use within a designated area.
Leuco-crystal-violet micelle gel dosimeters: I. Influence of recipe components and potential sensitizers

Radiochromic leuco crystal violet (LCV) micelle gel dosimeters are promising three-dimensional radiation dosimeters because of their spatial stability and suitability for optical readout. The effects of surfactant type and surfactant concentration on dose sensitivity of LCV micelle gels are tested, demonstrating that dose sensitivity and initial colour of the gel increases with increasing Triton x-100 (Tx100) concentration. Using Cetyl Trimethyl Ammonium Bromide (CTAB) in place of Tx100 produces gels that are nearly colourless prior to irradiation, but reduces the dose sensitivity. The separate effects of Tri-chloro acetic acid concentration and pH are investigated, revealing that controlling the pH near 3.6 is crucial for achieving high dose sensitivity. The sensitizing effect of chlorinated species on dose sensitivity is tested using 2,2,2-trichloroethanol (TCE), chloroform, and 1,1,1-trichloro-2-methyl-2-propanol hemihydrate. TCE gives the largest improvement in dose sensitivity and is recommended for use in micelle gel dosimeters because it is less volatile and safer to use than chloroform. Preliminary experiments on a new gel containing CTAB as the surfactant and TCE show that this new gel gives a dose sensitivity that is 24% higher than that of previous LCV micelle gels and is nearly colourless prior to irradiation.
Induction of cytochrome P4501A1 by autoclavable culture medium change in HepG2 cells

1. Without the addition of xenobiotics, only by changing the culture medium can one induce extensively and transiently cytochrome P4501A1 (CYP1A1) protein and mRNA in human hepatoma HepG2 cells. The induction was aryl hydrocarbon receptor (AhR)-dependent, and was proven by: (1) the medium change activated the AhR, as judged by a electrophoretic mobility shift assay; and (2) the AhR inhibitor α -naphthoflavone inhibited the medium change-mediated induction. 2. Induction of CYP1A1 was related to medium prepared by autoclaving. By screening the ingredients in the medium, the serum had no effect on CYP1A1 induction, whereas both photo-oxidized and autoclaved tryptophan were shown to induce CYP1A1, as indicated by CYP1A1 protein or ethoxyresorufin-O-deethylase activity. The autoclaved tryptophan contained in an autoclavable medium was a more potent inducer of CYP1A1 than photo-oxidized tryptophan. 3. The results provide some practical suggestions with experiments related to CYP1A1.
Validation of a dietary questionnaire used in a large-scale prospective cohort study on diet and cancer.

OBJECTIVE The study was conducted to assess the validity of a self-administered 150-item food frequency questionnaire (FFQ), used in a cohort study on diet and cancer (120,852 men and women, aged 55-69). DESIGN & SUBJECTS The study was carried out in a subgroup of the cohort (59 men and 50 women) 2 years after the baseline FFQ was completed. A dietary record, kept over three 3-day periods, 4-5 months apart, served as reference method. To evaluate the representativeness of the study population for the entire cohort, a comparison was made with the baseline questionnaire of a random sample of the cohort. RESULTS Pearson correlation coefficients between nutrient intakes assessed by the record and the FFQ that was completed afterwards ranged from 0.40 (95% CI: 0.22-0.54) for vitamin B1 to 0.86 (95% CI: 0.80-0.90) for alcohol intake, with correlations for most nutrients between 0.6 and 0.8. Adjustment for energy intake and sex did not materially affect these correlations, except the correlation for fat intake, which changed from 0.72 to 0.52. Correlation coefficients were only slightly modified when the results were extrapolated to the cohort at large. Correction of correlation coefficients for attenuation by day-to-day variance in the record data improved them by 0.07 on average. CONCLUSIONS It is concluded that the FFQ is able to rank subjects according to intake of food groups and nutrients. Despite a better performance of validation study participants, this conclusion also applies to the cohort at large.
Parental and self-report of sleep in children with attention-deficit/hyperactivity disorder.

OBJECTIVE To determine the prevalence of parent-reported and self-reported sleep disturbances in a sample of school-aged children with attention-deficit/ hyperactivity disorder (ADHD). DESIGN Cross-sectional survey questionnaire. SETTING A multidisciplinary ADHD evaluation clinic in a children's teaching hospital (ADHD sample) and 3 elementary schools in southern New England (control sample). PARTICIPANTS Forty-six unmedicated, school-aged children (mean age, 89.4 +/- 18.7 months; 74% male) diagnosed as having ADHD by Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, criteria who had been screened for marked symptoms of sleep-disordered breathing, and 46 normal control children (mean age, 86.5 +/- 16.9 months; 70% male). INTERVENTION None. MAIN OUTCOME MEASURE Sleep habits and sleep disturbances reported by parents and children. RESULTS Children with ADHD had significantly higher (more sleep-disturbed) scores on all sleep subscales of the Children's Sleep Habits Questionnaire (parent measure) than did controls; average sleep duration as reported by parents was also significantly shorter in the ADHD group. Children with ADHD also reported their own sleep to be more disturbed than controls did on the Sleep Self-report, particularly on items relating to bedtime struggles (P range, .05-.001). There was a much higher correlation between parent and child sleep report items for the children with ADHD (mean correlation, 0.55) than for the control children. CONCLUSIONS Sleep disturbances, particularly at bedtime, are frequently reported by both parents and children with ADHD. Children undergoing evaluation for ADHD should be routinely screened for sleep disturbances, especially symptoms of sleep-disordered breathing. The causes of sleep-onset delay in children with ADHD should be considered in designing intervention strategies for children with difficulty falling and staying asleep.
Measurement of the three-dimensional distribution of radiation dose in grid therapy

A single large dose of megavoltage x-rays delivered through a grid is currently being utilized by some centres for palliative radiotherapy treatments of large tumours. In this note, we investigate the dosimetry of grid therapy using two-dimensional film dosimetry and three-dimensional gel dosimetry. It is shown that the radiation dose is attenuated more rapidly with depth in a grid field than an open field, and that even shielded regions receive approximately 25% of the dose to the unshielded areas.
Elastic modulus of halloysite nanotubes

This work reports measurements of the elastic modulus of halloysite nanotubes. Nanoscale three-point bending tests were performed on individual nanotubes using an atomic force microscope. Nanotubes exhibit elastic behaviour at small deformations. The stiffness of the tubes, and hence their elastic modulus, was deduced from force curve measurements using an appropriate mechanical model. The boundary conditions were also identified by recording the stiffness profile of a tube along its suspended length. An average elastic modulus of 140 GPa is obtained for a set of tubes with outer diameters ranging between 50 and 160 nm. Moreover, the elastic modulus increases with decreasing outer diameter, with a steep jump below 50 nm. The size dependence of the elastic modulus may be attributed to: (i) surface tension effects for thinner tubes and (ii) a non-negligible contribution of shear deformations to the total deflection for larger tubes.
Determinants of immunisation coverage in Butere-Mumias district, Kenya.

BACKGROUND Butere-Mumias district is one of the districts which performs poorly on immunisation coverage, as observed from the Kenya Expanded Programme of Immunisation reports. OBJECTIVE To identify factors that contribute to the low level of immunisation coverage in the district among children under the age of five years. DESIGN Cross-sectional descriptive study. SETTING Butere-Mumias district. RESULTS Out of the 293 mothers who were sampled, 238 (80%) had attained primary level of education while, 55 (20%) attained secondary level and above. Immunisation coverage was found to be 35% in this district. Long distances to health facilities, poor states of the roads, age, attitude and knowledge regarding immunisation among mothers were significant factors that determined immunisation coverage. CONCLUSION Low levels of education, long distances to the nearest health facilities, lack of knowledge on immunisations and lack of staff were responsible for the low coverage. There is therefore, need to act on these factors which hamper the immunisation coverage in order to reduce child mortality rate which are attributable to non-immunisation.