We have developed a new technique based on the passive gamma method for measuring a quantity of uranium in a uranium waste container (1200 liter volume). The measurement system consists of three NaI (Tl)detectors, one High Purity Germanium (HPGe) detector and a handling system. The measuring method uses two discrete gamma-ray energies emitted from the daughter nuclide Pa-234m (1001 keV and 766 ...

Abstract This paper provides a study on the procedure of tugboat handling for berthing and unberthing container ships in Port Surabaya Container Terminal. The elements assistance consisted time series percentage tugboats’ power, direction tug’s force, duration. developed manoeuvring simulation program using mathematical group (MMG) model to determine achieve intended trajectory properly. consid...

Seaport container terminals are essential nodes in sea cargo transportation networks. As such, the operational efficiency of container terminals in handling containers passing through them plays a critical role in a globalized world economy. Many models and algorithms have been developed to address various decision problems in container terminals to help improve operational efficiency. These de...

Investigation of feeder ships worldwide has identified South East Asian and the Caribbean as transshipment markets open to feeder ship replacement with a need for improved operational efficiency. In response to this challenge an environmentally sustainable feeder-container ship concept has been developed for the 2020 container market. The concept utilises higher speed and larger capacity than t...

the toxicity of thiamethoxam and pirimicarb on diaeretiella rapae (mc'intosh) as a parasitoid of lipaphis erysimi (kaltenbach), exposed to residues on glass vials, was investigated under laboratory conditions at 23 ± 2 °c, 70 ± 5% rh and 16:8 h (l: d). moreover, in order to find the negative impacts of both insecticides on the efficiency of d. rapae, the functional response of the exposed paras...