Eta-nucleon and eta-prime-nucleon coupling constants in QCD and the role of gluons

Coupling constants of $\eta$ and $\eta^{\prime}$ mesons with nucleons have been calculated using the method of QCD sum rules. Starting from vacuum-to-meson correlation function of interpolating fields of two nucleons, its matrix element with respect to nucleon spinors has been considered. Coupling constants at the physical points have been estimated from extrapolation of results obtained at two other points. Anomalous glue has been found to give substantial contribution to the coupling constants and also accounts for a significant OZI-rule violation.Comment: 6 pages, 3 figures and 2 table

Productivity of key informants for identifying blind children: evidence from a pilot study in Malawi.

OBJECTIVES: To determine the productivity of village-based 'key informants' (KIs) in identifying blind children. MATERIALS AND METHODS: Ngabu subdistrict (population 101,000) of Chikwawa district was divided into KI catchment areas. KIs, selected by local village leaders, were trained to register children reported to be blind or with severe visual impairment. These children were clinically assessed at designated centres. RESULTS: In total, 44 KIs were selected and trained to cover 196 villages in Ngabu. They identified and referred 151 children, 37 of whom were blind (presenting vision <3/60 best eye). Overall, village leaders tended to choose female KIs (80%) compared to male KIs (20%); however, male KIs tended to be more productive, identifying 4.22 children each (compared to 3.23 for female KIs). Male KIs were 2.7 times more likely to identify blind children compared to female KIs. Only 25% of all identified blind children of school going age were in school. CONCLUSIONS: KIs may be effective in identifying blind children in the community; however, additional work is needed to determine who will be the most effective KI in a community and whether gender roles will limit interpretation of findings from KIs activities

Water ice clouds in a martian global climate model using data assimilation

The water cycle is one of the key seasonal cycles on Mars, and the radiative effects of water ice clouds have recently been shown to alter the thermal structure of the atmosphere. Current Mars General Circulation Models (MGCMs) are capable of representing the formation and evolution of water ice clouds, though there are still many unanswered questions regarding their effect on the water cycle, the local atmosphere and the global circulation. We discuss the properties of clouds in the LMD/UK MGCM and compare them with observations, focusing on the differences between the water ice clouds in a standalone model and those in a model which has been modified by assimilation of thermal and aerosol opacity spacecraft data

Survey of use of over the counter drug and other than over the counter drugs among medical students, nursing and technician staff of a tertiary care teaching hospital

Background: To find out pattern and extent of use of OTC and other than OTC drugs among medical students, nursing and technician staff.Methods: Study began after taking permission and approval from Institutional Review Board (IRB). Medical student, nursing and technician staff of tertiary care teaching hospital was enrolled after written informed consent. Pre validated questionnaire regarding use of such use was administered to each participant.Results: A total of 200 participants responded to questionnaire, M:F ratio was 1:1.7. Majority of the participants had taken OTC drugs for cough/cold (72.6%) followed by headache/ body ache (71.1%). Paracetamol (81%) followed by Diclofenac (42.5%), ibuprofen (37.8%) were the most common drugs taken. About 85% participants had taken antimicrobial considering it as an OTC product. Most commonly used antimicrobials were metronidazole (19.4%) followed by levofloxacin (17.9%).Most common reason for self medication was the perception that the disease wasn’t serious (44.8%), favourable prior advertisement (34.3%). About 52% requested for drug by mentioning name of drug. Most (50.7%) felt that OTC drug improved their illness. 45.9% stopped when symptoms disappeared. Majority of the participants (57.2%) believed use of OTC drug is a good practice. Most of the participants (56.7%) believed they can treat symptoms with OTC drugs.64.7% participants believed use of OTC drug is beneficial for them. Most of the participants lack the knowledge for dose (73.6%) and frequency (68.2%) of drug. A substantial number of participants (58.61%) were taking drugs outside OTC list.Conclusions: Awareness and dangers of misuse of OTC medications among all the participants was less. Therefore it is suggested that proper education should be imparted regarding illness where self-administration of OTC drugs to be employed

The H1 Forward Track Detector at HERA II

In order to maintain efficient tracking in the forward region of H1 after the luminosity upgrade of the HERA machine, the H1 Forward Track Detector was also upgraded. While much of the original software and techniques used for the HERA I phase could be reused, the software for pattern recognition was completely rewritten. This, along with several other improvements in hit finding and high-level track reconstruction, are described in detail together with a summary of the performance of the detector.Comment: Minor revision requested by journal (JINST) edito

Radiative transfer modelling for the NOMAD-UVIS instrument on the ExoMars Trace Gas Orbiter mission

The NOMAD (Nadir and Occultation for MArs Discovery) instrument is a 3-channel (2 IR, 1 UV/Vis) spectrometer due to fly on the 2016 ExoMars Trace Gas Orbiter mission. A radiative transfer model for Mars has been developed providing synthetic spectra to simulate observations of the UVIS channel in both solar occultation and nadir viewing geometries. This will allow for the characterization and mitigation of the influence of dust on retrievals of ozone abundance