The Search for the Missing Baryons at Low Redshift

At low redshift, only about one-tenth of the known baryons lie in galaxies or the hot gas seen in galaxy clusters and groups. Models posit that these "missing baryons" are in gaseous form in overdense filaments that connect the much denser virialized groups and clusters. About 30% are cool (<1E5 K) and are detected in Ly alpha absorption studies, but about half is predicted to lie in the 1E5-1E7 K regime. Gas is detected in the 2-5E5 K range through OVI absorption studies (7% of the baryons) and possibly near 1E5 K from broad Ly absorption (20% of the baryons). Hotter gas (0.5-2E6 K) is detected at zero redshift by OVII and OVIII K X-ray absorption, and the OVII line strengths seem to correlate with the Galactic soft X-ray background, so it is probably produced by Galactic Halo gas, rather than a Local Group medium. There are no compelling detections of the intergalactic hot gas (0.5-10E6 K) either in absorption or emission and these upper limits are consistent with theoretical models. Claimed X-ray absorption lines are not confirmed, while most of the claims of soft emission are attributable to artifacts of background subtraction and field-flattening. The missing baryons should become detectable with moderate improvements in instrumental sensitivity.Comment: To appear in Annual Review of Astronomy and Astrophysics, Vol 45 (Sept 2007) 44 pages, including 11 figure

Management of Lower Urinary Retention in a Limited Resource Setting

Background: There is a projected increase in lower urinary tract obstruction by 2018, especially in the developing economies of Asia and Africa. However in many of these countries, the problems encountered both by the patients and the clinicians are not well documented. Our aims are, to prospectively analyse the management of urinary retention, the associated difficulties, and complications in our setting, where access to investigative modalities such as Computerize Tomography and Magnetic Resonance Imaging are not available.Patients and Methods: The study was approved by the University Of Calabar Teaching Hospital ethical committee. A validated Proforma was used to collect data from all patients who were clinically diagnosed with urinary retention based on history, and physical examination, from July 2009 to June 2010. Data collected from the 1st of July 2009 to the 30th of June 2010, include demographics, findings on physical examination, previous medical history and co-morbid conditions. The results of investigations done such as: urinalysis, full blood count, electrolytes, urea and creatinine, intravenous urography, trans- abdominal ultrasonography, chest X-ray and histology of trans-rectal biopsies of the prostate . The total number of new patients seen, including those with urinary retention during the study was documented. The retentions were also classified into acute and chronic. All the patients were followed up throughout the study. The data was analysed using Epi-Info statistical program version 3.4 of 2007 to analyse the data, estimating averages, mean, median and percentages. Results: The total number of new patients seen, including those with urinary retention was Seventy thousand, one hundred and thirty nine (70,139).Of this number, hundred and fifty nine (0.23%), presented with urinary retention; 145 (91.2%) were acute, and14 (8.8%) were chronic. The male: female ratio was 39:1.The patients ages ranged from 4 to 94 years, with a mean of 53.7±11.2. Seventy seven [48.4%] of them were in the 6th and 7th decades of life. The common causes were; prostatic diseases [BPH and cancer of the prostate] 77.0%, infections 75.8%, trauma 12.1%, and congenital 12.1%. Urinary retention was relieved by: indwelling urethral catheterization [IUC] 120 patients (75.5%), supra- pubic cystostomy [SC] 34 (21.4%) and intermittent urethral catheterization [IC] 5 (3.1%). The most frequently encountered complications include pyuria (18.2%), pericatheter sepsis 17.5%, and haemorrhage during change of catheter 16.8% [figure 2].Conclusion: Lower urinary retention is common in our environment. The management is appropriate and standard. The man power and facilities are inadequate, and requires urgent improvement.Keywords: Urinary retention; management; limited resource

ASSESSMENT OF CORRELATION IN GENDER AND AGE WITH LIPOPROTEIN LEVELS IN HYPERLIPIDEMIA PATIENTS

ABSTRACTObjective: The main objective of the study was to monitor and compare the correlation between the age and gender with the serum lipoprotein levelsin the hyperlipidemia patients.Methods: The entire study was performed only after getting approval from the Institutional Ethics Committee. This is a prospective observationalstudy and conducted in Department of Cardiology of a tertiary care teaching hospital. A total of 520 patients were included and the data collected bydata entry form, and the results were thoroughly analyzed using various statistical tools for its relevance and significance.Results: From the total study population (n=520), the majority was males 271 (52.1%) than the female population 249 (47.9%). The minimum agein the study population identified was 40 (years) and the maximum age was 89 (years). The average age of the study population was found to be60.94±13.062 (years). The mean averages of total cholesterol in males 217.48±39.33 mg/dL compared to females 231.05±55.05 mg/dL, triglyceridesin males were 209.01±73.08 mg/dL compared to females 235.71±97.16 mg/dL, low-density lipoproteins in males were 156.42±37.02 mg/dLcompared to females 164.19±43.17 mg/dL, and in case of high-density lipoproteins it was 32.61±6.34 mg/dL compared to females 31.48±6.53 mg/dL.Conclusion: From the entire study, it was concluded that the prevalence rate is a more common in male population. The incidence rate is too high inyounger age population. The correlation of age and gender is directly proportional to the incidence of hyperlipidemia.Keywords: Hyperlipidemia, Cardiology, Gender, Age

Comparative Chemical Analysis, Phytochemical Screening and Antimicrobial Activities of the Rinds, Seeds and Juice of (Passiflora edulis var. flavicarpa) Passion Fruit

In this study, an attempt had been made to determine the proximate composition and anti-nutritional factors of the juice, rind and seed of passiflora edulis var. flavicarpa. Crude lipid was determined by Soxhlet extraction, crude protein by microkjeldahl method and crude carbohydrate by difference. The result of proximate composition showed that there was a significant difference (p&lt;0.05) in fibre, protein, lipid, and moisture content between the rind, juice and seed.  The oxalate, phytate, tannin and cyanide content of the rind, seed and juice were low but differed significantly. The methanol extract of the rind, seed and juice of Passiflora edulis var. flavicarpa were screened for the presence of secondary plant metabolites and tested for antimicrobial activity. Flavonoids, alkaloids, volatile oils and balsam were detected in all the extracts. Saponins and steroids were detected in seed and juice extracts. Glycosides and saponin glycosides were detected in seed and peel extracts. The antibacterial activity was tested against Salmonella typhi, Escherichia coli and Staphylococcus aureus by well-in agar method. The rind and seed showed significant antibacterial activity against the test organisms at all the concentrations tested (30, 60 and 90 mg/ml). The juice extract showed moderate activity. The rind, seed and juice showed antifungal activity. The fungus isolate used was Aspergillus niger using agar incorporation method. The methanol extracts of seed and rind showed extremely significant differences (p&lt;0.05) against the Aspergillus niger, while juice extract considered not quite significant (p&gt;0.05). The result showed a significant increase in the activity of the extracts at all the concentrations tested (10, 20, 40, 70 and 100 mg/ml). The observed result may be attributed to the presence of detected phytochemical constituents. It can be concluded that Passiflora edulis var. flavicarpa possess antimicrobial activity and is also nutritionally relevant and could serve as a rich source of nutrients. Keywords: Passiflora edulis var. flavicarpa, Comparative, Chemical, Antinutritional. Phytochemical, antimicrobial

Measurements of scattering observables for the pdpd break-up reaction

High-precision measurements of the scattering observables such as cross sections and analyzing powers for the proton-deuteron elastic and break-up reactions have been performed at KVI in the last two decades and elsewhere to investigate various aspects of the three-nucleon force (3NF) effects simultaneously. In 2006 an experiment was performed to study these effects in $\vec{p}+d$ break-up reaction at 135 MeV with the detection system, Big Instrument for Nuclear polarization Analysis, BINA. BINA covers almost the entire kinematical phase space of the break-up reaction. The results are interpreted with the help of state-of-the-art Faddeev calculations and are partly presented in this contribution.Comment: Proceedings of 19th International IUPAP Conference on Few-Body Problems in Physics, Bonn University, 31.08 - 05.09.2009, Bonn, GERMAN

Electro-Magnetic Nucleon Form Factors and their Spectral Functions in Soliton Models

It is demonstrated that in simple soliton models essential features of the electro-magnetic nucleon form factors observed over three orders of magnitude in momentum transfer $t$ are naturally reproduced. The analysis shows that three basic ingredients are required: an extended object, partial coupling to vector mesons, and relativistic recoil corrections. We use for the extended object the standard skyrmion, one vector meson propagator for both isospin channels, and the relativistic boost to the Breit frame. Continuation to timelike $t$ leads to quite stable results for the spectral functions in the regime from the 2- or 3-pion threshold to about two rho masses. Especially the onset of the continuous part of the spectral functions at threshold can be reliably determined and there are strong analogies to the results imposed on dispersion theoretic approaches by the unitarity constraint.Comment: 24 pages, (RevTeX), 5 PS-figures; Data points in fig.2 and corresponding references added. Final version, to be published in Z.Physik

Labelled drug-related public expenditure in relation to gross domestic product (gdp) in Europe: A luxury good?

"Labelled drug-related public expenditure" is the direct expenditure explicitly labelled as related to illicit drugs by the general government of the state. As part of the reporting exercise corresponding to 2005, the European Monitoring Centre for Drugs and Drug Addiction's network of national focal points set up in the 27 European Union (EU) Member States, Norway, and the candidates countries to the EU, were requested to identify labelled drug-related public expenditure, at the country level. This was reported by 10 countries categorised according to the functions of government, amounting to a total of EUR 2.17 billion. Overall, the highest proportion of this total came within the government functions of Health (66%), and Public Order and Safety (POS) (20%). By country, the average share of GDP was 0.023% for Health, and 0.013% for POS. However, these shares varied considerably across countries, ranging from 0.00033% in Slovakia, up to 0.053% of GDP in Ireland in the case of Health, and from 0.003% in Portugal, to 0.02% in the UK, in the case of POS; almost a 161-fold difference between the highest and the lowest countries for Health, and a 6-fold difference for POS. Why do Ireland and the UK spend so much in Health and POS, or Slovakia and Portugal so little, in GDP terms? To respond to this question and to make a comprehensive assessment of drug-related public expenditure across countries, this study compared Health and POS spending and GDP in the 10 reporting countries. Results found suggest GDP to be a major determinant of the Health and POS drug-related public expenditures of a country. Labelled drug-related public expenditure showed a positive association with the GDP across the countries considered: r = 0.81 in the case of Health, and r = 0.91 for POS. The percentage change in Health and POS expenditures due to a one percent increase in GDP (the income elasticity of demand) was estimated to be 1.78% and 1.23% respectively. Being highly income elastic, Health and POS expenditures can be considered luxury goods; as a nation becomes wealthier it openly spends proportionately more on drug-related health and public order and safety interventions

Monoculture of Leafcutter Ant Gardens

Background -- Leafcutter ants depend on the cultivation of symbiotic Attamyces fungi for food, which are thought to be grown by the ants in single-strain, clonal monoculture throughout the hundreds to thousands of gardens within a leafcutter nest. Monoculture eliminates cultivar-cultivar competition that would select for competitive fungal traits that are detrimental to the ants, whereas polyculture of several fungi could increase nutritional diversity and disease resistance of genetically variable gardens. Methodology/Principal Findings -- Using three experimental approaches, we assessed cultivar diversity within nests of Atta leafcutter ants, which are most likely among all fungus-growing ants to cultivate distinct cultivar genotypes per nest because of the nests' enormous sizes (up to 5000 gardens) and extended lifespans (10–20 years). In Atta texana and in A. cephalotes, we resampled nests over a 5-year period to test for persistence of resident cultivar genotypes within each nest, and we tested for genetic differences between fungi from different nest sectors accessed through excavation. In A. texana, we also determined the number of Attamyces cells carried as a starter inoculum by a dispersing queens (minimally several thousand Attamyces cells), and we tested for genetic differences between Attamyces carried by sister queens dispersing from the same nest. Except for mutational variation arising during clonal Attamyces propagation, DNA fingerprinting revealed no evidence for fungal polyculture and no genotype turnover during the 5-year surveys. Conclusions/Significance -- Atta leafcutter ants can achieve stable, fungal monoculture over many years. Mutational variation emerging within an Attamyces monoculture could provide genetic diversity for symbiont choice (gardening biases of the ants favoring specific mutational variants), an analog of artificial selection.The research was supported by National Science Foundation awards DEB-0920138, DEB-0639879, and DEB-0110073 to UGM; DEB-0949689 to T.R. Schultz, N. Mehdiabadi, and UGM; and a Fellowship (02/05) from the Conselho Nacional de Desenvolvimento Científico e Tecnológico to AR. The funding agencies had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Biological Sciences, School o

Integer programming methods for special college admissions problems

We develop Integer Programming (IP) solutions for some special college admission problems arising from the Hungarian higher education admission scheme. We focus on four special features, namely the solution concept of stable score-limits, the presence of lower and common quotas, and paired applications. We note that each of the latter three special feature makes the college admissions problem NP-hard to solve. Currently, a heuristic based on the Gale-Shapley algorithm is being used in the application. The IP methods that we propose are not only interesting theoretically, but may also serve as an alternative solution concept for this practical application, and also for other ones