Development of nine-channel 10-micrometer (Hg, Cd)Te pushbroom IR/CCD system

The engineering development of the 9-channel detector array is documented. The development of the array demonstrates the feasibility of a self scanned multi-element infrared detector focal plane. Procedures for operating the array are outlined

Potency of Septol® against Escherichia Coli and Staphylococcus Aureus Associated Nosocomial Infections in Specialist Hospital Gombe

The antimicrobial properties of various dilutions of Septol® against some test and control nosocomial E. coli and  Staphylococcus aureus were investigated. Results showed that loss of viability was faster in sterile deionised water (SDW), followed by sterile tap water (STW) and then 10% sheep serum. A higher percentage of the resistant strains (S2 and E2) survived compared to the susceptible strains (S1 and E1). The viability of the cells in the disinfectant was also concentration dependent. Minimum inhibitory concentration (MIC) and Minimum bactericidal concentration (MBC) values from the different diluents used were highest for serum, followed by STW, while lowest values were obtained from SDW. This study showed that the organisms exhibited some stable resistance to the disinfectants used; there is therefore a need for review of the dilutions being used. Greater concentration of the disinfectants should be used.Key wards: Septol®, Disinfection, Susceptibility, bactericidal, viability, Decimal reduction time

Search for eta-mesic Helium with the WASA-at-COSY detector

A search for the 4He-eta bound state via exclusive measurement of the excitation function for the dd->3Heppi- reaction, was performed at the Cooler Synchrotron COSY-Juelich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 GeV/c to 2.400 GeV/c crossing the kinematic threshold for the eta production in the dd -> 4He-eta reaction at 2.336 GeV/c. The corresponding excess energy in the 4He-eta system varied from -51.4 MeV to 22 MeV. The shape of the excitation function for the dd -> 3Heppi- was examined. No signal of the 4He-eta bound state was observed in the excitation function.Comment: 4 pages, 5 figures, to appear in proceedings of MESON201

Constant Amortized Time Enumeration of Eulerian trails

In this paper, we consider enumeration problems for edge-distinct and vertex-distinct Eulerian trails. Here, two Eulerian trails are \emph{edge-distinct} if the edge sequences are not identical, and they are \emph{vertex-distinct} if the vertex sequences are not identical. As the main result, we propose optimal enumeration algorithms for both problems, that is, these algorithm runs in $\mathcal{O}(N)$ total time, where $N$ is the number of solutions. Our algorithms are based on the reverse search technique introduced by [Avis and Fukuda, DAM 1996], and the push out amortization technique introduced by [Uno, WADS 2015]

Improvements of the reception facilities in Democratic Yemen

As a result of the restrictions imposed by MARPOL 73/78 on operational discharges, it has become essential for ships to retain all or a greater proportion of oily waste on board. In turn, this calls for the provision of adequate port reception facilities. The objective of this paper is to assist in providing for an adequate number of reception facilities for oily wastes in Democratic Yemen Ports and controlling their operation. The paper begins with tracing the development of the different requirements and regulations controlling the discharge of oily waste from ships and the provision of reception facilities in ports since 1954. Then Chapter 3 covers the Guidelines on the provision of adequate reception facilities in ports as prepared by the Maritime Environment Protection Committee. The importance of the Gulf of Aden as a main route of shipping, the impact of pollution in this area in general, and the activities in the country related to the oil industry are all covered in Chapter 4. The reception facilities available in Democratic Yemen and the adequacy of these facilities are discussed in Chapter 5. The conclusions and recommendations which form Chapter 6 are based on the following: a) to process the effluent such that it is purified and separated to comply with the provision of the MARPOL 73/78 Convention. b) to cope with the estimated traffic and throughputs of effluent, c) to have the required storage capacity, d) to have suitable connections to the discharging vessels to ensure complete transfer of the effluent ashore. e) to have a good controlling process over the adequacy of the facilities and their operation