Miracle-dz/UniFAR-FTUs huggingface dataset:
A new tool for measuring therapeutic electron beam energies with scintillation light

In order to facilitate quality control (QC) of the electron linear accelerator (LINAC), we propose a new method of measuring the mean energy of the therapeutic electron beam by using the visible scintillation light generated when the electron beam is irradiated on a plastic scintillator. We used the light capture system consisting of a tissue equivalent plastic scintillator and a charge coupled device (CCD) camera, and measured the brightness from the pixel of the image recorded by the CCD camera. Measurements of dose rate dependence and dose linearity were performed as the characterization of this system. In this research we determined the mean energy of the electron beams of 4 MeV and 6 MeV by measuring the depth brightness distribution of scintillation light, and then we compared it to the energy obtained from the percentage depth dose (PDD) in the water phantom. From the experimental results, the brightness was found to be linear in the dose rate. Moreover, the brightness increased in proportion to the absorbed dose. Although, there was a shift in the energy by 3.2% or less between the measured energies, we consider it possible to check the energy daily by correcting this shift measured in advance. Therefore, this new energy measuring tool can be useful for daily quality control of LINAC.
Functional expression of CD40 antigen on human epidermal Langerhans cells.

It is now well established that interactions of CD40 on the B cells, along with its ligand (CD40-L) on the T cells, regulate B cell proliferation and differentiation. However, the functional significance of CD40 expression on cells known for most efficient Ag-presenting function, i.e., dendritic cells, is not so clear. In this study, we demonstrate that CD40 is expressed on human dendritic Langerhans cells (LC) freshly isolated from epidermis. Using CD40-L transfected cells, CD40 triggering was found to enhance LC viability when cultured and to result in phenotypic alterations. Thus, a 2-day CD40 activation induced up-regulation of CD54 and CD86 at the LC surface, while it did not significantly affect the levels of HLA-DR, CD1a, CD58, and CD80 expression. These phenotypic changes correlate with enhanced LC allostimulatory property, as shown by the use of paraformaldehyde-fixed LC. Furthermore, mAbs against CD40, as well as CD40-L, strongly inhibit the primary T cell response to allogeneic LC. Collectively, these data support a role for CD40/CD40-L pair in the development of normal T cell functions.
Verifier-based password-authenticated key exchange protocol in cross-realm setting

Most existing password-based authenticated key exchange(PAKE) protocols in cross-realm setting are based on balance scheme, which is vulnerable to password guessing attacks and server compromise attack. In this paper, we propose a verifier-based PAKE protocol in cross-realm setting called VB-4PAKE, in which the client uses a plaintext version of the password, while the server stores a verifier of the password. We also show that the proposed protocol can resist various attacks including password guessing attacks and server compromise attack.
Gender differences in HIV disclosure, stigma, and perceptions of health

HIV disclosure is a gateway to HIV prevention – particularly among couples living in regions severely affected by the HIV epidemic. This cross-sectional study utilizes data collected from 862 people living with HIV across three countries (Ethiopia, Mozambique, and Uganda) in 2011 to determine the role of partner disclosure on self-reported health perceptions and changes in sexual risk behavior. The study's secondary aims are to understand whether or not internalized stigma mediates this relationship and if there is a different pattern of results by gender. The multivariate analysis reveals that the three key HIV-related independent variables, belonging to a support group, doing volunteer work, and disclosing to one's spouse or partner, were significantly associated with lower levels of internalized stigma. Internalized stigma was associated with self-perceptions of poorer health for both women and men, with women reporting higher levels of internalized stigma than men. Disclosure to spouse was positively associated with perceptions of better health for women but not for men. For men, doing HIV-related volunteer work and disclosing their status to their spouse were positively associated with self-reported changes in sexual risk behavior, although stigma was not found to mediate this relationship. Findings from this study suggest that disclosure and stigma have gender-specific effects on individual well-being and changes in sexual risk behaviors. As such, programs must address gender inequity in disclosure patterns and stigma to enhance prevention efforts.
Recurrent deletion of 3p13 targets multiple tumour suppressor genes and defines a distinct subgroup of aggressive ERG fusion‐positive prostate cancers

Deletion of 3p13 has been reported from about 20% of prostate cancers. The clinical significance of this alteration and the tumour suppressor gene(s) driving the deletion remain to be identified. We have mapped the 3p13 deletion locus using SNP array analysis and performed fluorescence in situ hybridization (FISH) analysis to search for associations between 3p13 deletion, prostate cancer phenotype and patient prognosis in a tissue microarray containing more than 3200 prostate cancers. SNP array analysis of 72 prostate cancers revealed a small deletion at 3p13 in 14 (19%) of the tumours, including the putative tumour suppressors FOXP1, RYBP and SHQ1. FISH analysis using FOXP1‐specific probes revealed deletions in 16.5% and translocations in 1.2% of 1828 interpretable cancers. 3p13 deletions were linked to adverse features of prostate cancer, including advanced stage (p < 0.0001), high Gleason grade (p = 0.0125), and early PSA recurrence (p = 0.0015). In addition, 3p13 deletions were linked to ERG+ cancers and to PTEN deletions (p < 0.0001 each). A subset analysis of ERG+ tumours revealed that 3p13 deletions occurred independently from PTEN deletions (p = 0.3126), identifying tumours with 3p13 deletion as a distinct molecular subset of ERG+ cancers. mRNA expression analysis confirmed that all 3p13 genes were down regulated by the deletion. Ectopic over‐expression of FOXP1, RYBP and SHQ1 resulted in decreased colony‐formation capabilities, corroborating a tumour suppressor function for all three genes. In summary, our data show that deletion of 3p13 defines a distinct and aggressive molecular subset of ERG+ prostate cancers, which is possibly driven by inactivation of multiple tumour suppressors. Copyright © 2013 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
Simulating and Summarizing Sources of Gene Tree Incongruence

We introduce a gene tree simulator that is designed for use in conjunction with approximate Bayesian computation approaches. We show that it can be used to determine the relative importance of hybrid speciation and introgression compared with incomplete lineage sorting (ILS) in producing patterns of incongruence across gene trees. Important features of the new simulator are (1) a choice of models to capture the decreasing probability of successful hybrid species formation or introgression as a function of genetic distance between potential parent species; (2) the ability for hybrid speciation to result in asymmetrical contributions of genetic material from each parent species; (3) the ability to vary the rates of hybrid speciation, introgression, and divergence speciation in different epochs; and (4) incorporation of the coalescent, so that patterns of incongruence due to ILS can be compared with those due to hybrid evolution. Given a set of gene trees generated by the simulator, we calculate a set of statistics, each measuring in a different way the discordance between the gene trees. We show that these statistics can be used to differentiate whether the gene tree discordance was largely due to hybridization, or only due to lineage sorting.
Thrombocytosis in myelodysplastic and myelodysplastic/myeloproliferative syndromes

Thrombocytosis at diagnosis is uncommon in myelodysplastic (MDS) and myelodysplastic/myeloproliferative (MDS/MPD) syndromes. We conducted a retrospective analysis to determine the clinical and haematopathological features of such patients, and the effect of thrombocytosis on prognosis. Of the 388 patients diagnosed with MDS from 1980 – 2006, 31 presented with thrombocytosis. The majority (71%) had low risk features and a low incidence of spontaneous bleeding or thrombo-embolic events. Compared to a case-matched control group of MDS and MDS/MPD patients without thrombocytosis of similar ages and IPSS scores, patients with thrombocytosis had a slightly lower probability of progression to a higher grade of MDS (P = 0.03), equivalent risk of transformation to acute myeloid leukemia (AML), and a trend (P = 0.07) towards longer overall survival (median 35.4 months compared to 27.6 months for controls).
Substantia gelatinosa neurons in the medullary dorsal horn: An intracellular labeling study in the rat

Morphologic features and electrical membrane properties of neurons in the substantia gelatinosa (SG) of the caudal spinal trigeminal nucleus (the medullary dorsal horn; MDH) were examined in the rat. Intracellular recording and biocytin‐injection combined with histochemical staining were performed in horizontal slices. Twenty‐four SG (lamina II) neurons were recorded stably and stained successfully. Both projection neurons (PNs; n = 9) that sent axons to regions outside the MDH and intrinsic neurons (INs; n = 15) that sent axons only to the MDH were observed. The INs were divided into those with dense axonal arborization (INDAs; n = 7) and those with sparse axonal arborization (INSAs; n = 8). In the PNs, the dendrites with spines spread to all MDH layers (laminae I–III). The main axons sent collaterals within the SG and rostrally, caudally, or medially to laminae I and III of the MDH, interpolar spinal trigeminal nucleus, spinal tract of the trigeminal nerve, or upper cervical cord segments. In the INDAs, the dendrites arising from the rostral and caudal pole of the cell bodies mainly extended rostrally and caudally parallel to the rostrocaudal axis of the SG: the dendritic trees were elongated and oval in shape and were confined within the SG. The axonal field of each INDA, a dense mesh of axonal processes, was elongated and oval in shape and almost was confined within the SG. In the INSAs, a small, round cell body was located in the center of each dendritic field, which usually was limited within the SG. Axonal processes ran radially to spread to all layers of the MDH, constituting round or oval axonal fields. The three groups of SG neurons showed more or less different intracellular responses to current injections. In particular, adaptation of spike frequency, hyperpolarizing sag, and rebound excitation were observed in the PNs and INSAs but not in the INDAs. Slow ramp depolarization and slow afterdepolarization were recorded only in INDAs. J. Comp. Neurol. 411:399–412, 1999. © 1999 Wiley‐Liss, Inc.
Circadian variation of heart rate variability.

STUDY OBJECTIVE The aim of the study was to examine the circadian variation in heart rate variability and to test the hypothesis that the variation is due to vagal influence. DESIGN Human subjects, some with vagal neuropathy, underwent ambulatory 24 h electrocardiographic monitoring, the recordings being played back through an analyser which identified and timed successive pulse (R-R) intervals. Heart rate variability was measured for each 30 min period over 24 h as the standard deviation of the successive differences between R-R intervals, which filtered out low frequency components of heart rate variability that were not autonomic in origin. Modelled curves of heart rate variability were compared using analysis of variance. SUBJECTS The subjects were aged between 33 and 65 years and were matched in three groups for age and sex. There were 11 healthy controls, 12 insulin dependent diabetics and seven alcoholics with vagal neuropathy. RESULTS A significant circadian variation in heart rate variability was present, characterised by a rise during sleep. Mean heart rate variation was significantly reduced in groups with vagal neuropathy, although the amplitude of the cycle and time of peak variability was not significantly different. The circadian variation was sustained regardless of the degree of vagal neuropathy. CONCLUSIONS The cycle of heart rate variability is not dependent on vagal interaction. It may be due to fluctuations in sympathetic activity affecting beat to beat variability.
Efficiency optimisation of an experimental PEM fuel cell system via Super Twisting control

A robust control solution is proposed to solve the air supply control problem in autonomous polymer electrolyte membrane fuel cells (PEMFC) based systems. Different second order sliding mode (SOSM) controllers are designed using a model of a laboratory test fuel cell generation system. Very good simulation results are obtained using such algorithms, showing the suitability of the SOSM approach to PEMFC stack breathing control. Subsequently, for experimental validation, a controller based on one of the previously assessed SOSM algorithms, namely a Super Twisting, is successfully implemented in the laboratory test bench. Highly satisfactory results are obtained, regarding dynamic behaviour, regulation error and robustness to uncertainties and external disturbances.
Dissemination of Community-Acquired Methicillin-Resistant Staphylococcus aureus Clones in Northern Norway: Sequence Types 8 and 80 Predominate

ABSTRACT Increasing frequencies of community-acquired methicillin-resistant Staphylcoccus aureus (MRSA) strain isolation have been reported from many countries. The overall prevalence of MRSA in Norway is still very low. MRSA isolates (n = 67) detected between 1995 and 2003 in northern Norway were analyzed by pulsed-field gel electrophoresis, multilocus sequence typing, and staphylococcal cassette chromosome mec (SCCmec) typing. Sixty-seven isolates were associated with 13 different sequence types. Two successful MRSA clones predominated. Sequence type 8 (ST8) (40%) and ST80 (19%) containing SCCmec type IV were detected in hospitals and communities in different geographic regions during a 7-year period. In general, there was a low level of antimicrobial resistance. Only 26% of the isolates were multiresistant. International epidemic clones were detected. The frequent findings of SCCmec type IV (91%) along with heterogeneous genetic backgrounds suggest a horizontal spread of SCCmec type IV among staphylococcal strains in parallel with the clonal spread of successful MRSA strains.
Improvement in respiratory function by percutaneous vertebroplasty

Background: Percutaneous vertebroplasty (PVP) improves back pain and corrects spinal misalignment to some extent, and thus may improve respiratory function. Purpose: To retrospectively investigate changes in respiratory function after PVP. Material and Methods: 41 patients (mean age 72.0 years, range 59–86 years; 39 women, two men) who had undergone PVP for vertebral compression fractures (37 thoracic vertebral bodies [Th6–Th12] and 50 lumbar vertebral bodies [L1–L5]) caused by osteoporosis visited our hospital for follow-up consultation between January and June 2005. At this follow-up consultation, respiratory function testing, including percent forced vital capacity (FVC%) and percent forced expiratory volume in 1 s (FEV1%), was performed. We retrospectively compared these values with those taken before PVP using a Wilcoxon signed-rank test. Results: FVC% was 85.2±30.3% before PVP and 91.5±16.8% at follow-up (mean 10 months after PVP), which represented a significant difference (P<0.003). No significant difference in FEV1% was detected. Regarding the number of treatment levels, that is, single vertebroplasty versus multiple vertebroplasty, no significant difference in improvement of FVC% was confirmed (P=0.1). FVC% was abnormally low (≤79%) before PVP in 16 patients and improved to within normal range postoperatively in six of these patients (38%). Conclusion: PVP improves preoperatively decreased lung function, but this improvement takes time.
Roles of Low-Molecular-Weight Penicillin-Binding Proteins in Bacillus subtilis Spore Peptidoglycan Synthesis and Spore Properties

ABSTRACT The peptidoglycan cortex of endospores of Bacillusspecies is required for maintenance of spore dehydration and dormancy, and the structure of the cortex may also allow it to function in attainment of spore core dehydration. A significant difference between spore and growing cell peptidoglycan structure is the low degree of peptide cross-linking in cortical peptidoglycan; regulation of the degree of this cross-linking is exerted byd,d-carboxypeptidases. We report here the construction of mutant B. subtilis strains lacking all combinations of two and three of the four apparentd,d-carboxypeptidases encoded within the genome and the analysis of spore phenotypic properties and peptidoglycan structure for these strains. The data indicate that while thedacA and dacC products have no significant role in spore peptidoglycan formation, the dacB anddacF products both function in regulating the degree of cross-linking of spore peptidoglycan. The spore peptidoglycan of adacB dacF double mutant was very highly cross-linked, and this structural modification resulted in a failure to achieve normal spore core dehydration and a decrease in spore heat resistance. A model for the specific roles of DacB and DacF in spore peptidoglycan synthesis is proposed.
Anxiety, depression, and the suicidal spectrum: a latent class analysis of overlapping and distinctive features

ABSTRACT Anxiety and depression diagnoses are associated with suicidal thoughts and behaviours. However, a categorical understanding of these associations limits insight into identifying dimensional mechanisms of suicide risk. This study investigated anxious and depressive features through a lens of suicide risk, independent of diagnosis. Latent class analysis of 97 depression, anxiety, and suicidality-related items among 616 psychiatric outpatients indicated a 3-class solution, specifically: (1) a higher suicide-risk class uniquely differentiated from both other classes by high reported levels of depression and anxious arousal; (2) a lower suicide-risk class that reported levels of anxiety sensitivity and generalised worry comparable to Class 1, but lower levels of depression and anxious arousal; and (3) a low to non-suicidal class that reported relatively low levels across all depression and anxiety measures. Discriminants of the higher suicide-risk class included borderline personality disorder; report of worthlessness, crying, and sadness; higher levels of anxious arousal and negative affect; and lower levels of positive affect. Depression and anxiety diagnoses were not discriminant between higher and lower suicide risk classes. This transdiagnostic and dimensional approach to understanding the suicidal spectrum contrasts with treating it as a depressive symptom, and illustrates the advantages of a tripartite model for conceptualising suicide risk.
A novel A-D conversion for digital control switching power supply

This paper proposes a novel A-D conversion method for the digital P-I-D control in order to improve the transient response in the switching power supply. The P-I-D control circuit has a delay time mainly due to the calculation and sampling. This delay heavily affects the transient responses. In the presented method, the P-I-D is divided into two parts, the P control and the I-D control, independently. In the P control, the high speed and low resolution A-D converter is used to realize the quick control for the transient response. In the I-D control, the high resolution and low speed A-D converter is used to realize the accurate regulation characteristics. The cost of proposed method which is used two A-D converter is lower than the high resolution and high speed A-D converter. As result, it is confirmed that the proposed method have equivalent transient response to the high-cost one. This suggests that the proposed method is the efficient approach to realize the high performance design of the control circuit in low cost.
Safety of Glyburide for Gestational Diabetes: A Meta-Analysis of Pregnancy Outcomes

BACKGROUND: Gestational diabetes mellitus affects approximately 4% of all pregnancies. As with other oral hypoglycemics, the use of glyburide in pregnancy has been limited by fears of neonatal hypoglycemia following fetal exposure. Recent experimental and clinical studies have suggested, however, that the drug is not detectable in umbilical blood. OBJECTIVE: To determine the safety of glyburide use in pregnancy in the treatment of gestational diabetes compared with insulin therapy by analyzing all available human studies. METHODS: We conducted a systematic review and meta-analysis of all randomized and cohort studies that reported on the perinatal complications among women with gestational diabetes who received glyburide versus insulin. MEDLINE, EMBASE, and biological abstracts using BIOSIS previews were searched from inception of these databases through October 2006. The following outcomes were included: macrosomia, birthweight, gestational age, neonatal hypoglycemia, and intensive care unit (ICU) admissions. Odds ratios were calculated by the random effects method using Cochrane's Review Manager version 4.3. RESULTS: Nine studies met the inclusion criteria, including a total of 745 glyburide-exposed pregnancies and 637 insulin-exposed pregnancies, with each adverse perinatal outcome reported by 4–7 studies. The use of glyburide was not associated with risk of macrosomia (OR 1.07; 95% CI 0.78 to 1.47), differences in birth weight (weighted mean difference [WMD] OR 20.46 g; 95% CI −34.90 to 75.82), rate of large for gestational age (OR 1.04; 95% CI 0.75 to 1.43), differences in gestational age at birth (WMD 0.02 wk; 95% CI −0.23 to 0.26), ICU admission (OR 0.95; 95% CI 0.43 to 2.09), or increased risk of neonatal hypoglycemia (OR 1.24; 95% CI 0.91 to 1.69). CONCLUSIONS: The data shown here do not suggest increased perinatal risks with glyburide. The effectiveness and safety of glyburide require further evaluation, as most studies to date were not randomized.
The effects of diurnal intermittent fasting on the wake-promoting neurotransmitter orexin-A

BACKGROUND: Food restriction has been demonstrated to increase the alertness in different species and to increase the levels of the wake-promoting neurotransmitter orexin. We hypothesized that diurnal intermittent fasting (DIF) increases orexin-A levels during fasting. Therefore, we conducted this study to assess the effects of DIF, during the month of Ramadan, on orexin, while controlling for lifestyle changes that may accompany Ramadan such as sleep duration, bedtime and wake time, energy expenditure, light exposure, and food. METHODS: Eight young healthy volunteers (mean age, 25.4 ± 3.5 years) reported to the laboratory on three occasions: (1) 4 weeks before Ramadan while performing DIF for 1 week outside the month of Ramadan (fasting outside Ramadan); (2) 1 week before Ramadan (nonfasting baseline) (BL); and (3) during the 2nd week of Ramadan while performing DIF (Ramadan). Plasma levels of orexin-A were measured using an enzyme immunoassay five times at 22:00, 02:00, 04:00, 06:00, and 11:00. Caloric intake, light exposure, and sleep schedule were maintained during the participants' stays in the laboratory in the three study periods. RESULTS: Orexin-A levels increased in the daytime during fasting and decreased at night compared to BL. The differences in orexin-A levels between DIF and BL were significant at 06:00, 11:00, 22:00, and 02:00. CONCLUSIONS: DIF increases orexin-A levels in the plasma during fasting hours. This finding supports findings from animal studies showing that fasting increases alertness.