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Using Jordanian Natural Zeolite for Capturing Hydrogen Sulfide Gas

Al Jarrah Asem Mohammad

Ecological Engineering & Environmental Technology

2022

Vol. 23, iss. 5

164--168

In this work a fixed bed column was used to study the adsorption capability of Jordanian natural zeolite for capturing H2S gas. The effect of pressure, inlet concentration, and zeolite particles size was study, and the breakthrough curves were obtained. The results indicate that Jordanian natural zeolite is an effective material for capturing H2S gas at a pressure around 5 atm or more and the adsorption capacity is comparable to commercial zeolite. At a pressure of 6atm or more, the saturation adsorption capacity of zeolite is about 0.24 g H2S/g zeolite. For pressure more than 6 atm the adsorption capacity remains almost the same, and therefore, 6 atm is the suitable operating pressure for Jordanian natural zeolite to capture H2S.

Tracking an omnidirectional evader with a differential drive robot at a bounded variable distance

Ruiz U., Marroquin J. L., Murrieta-Cid R.

International Journal of Applied Mathematics and Computer Science

2014

Vol. 24, no. 2

371--385

In this paper, we address the pursuit-evasion problem of tracking an Omnidirectional Agent (OA) at a bounded variable distance using a Differential Drive Robot (DDR), in an Euclidean plane without obstacles. We assume that both players have bounded speeds, and that the DDR is faster than the evader, but due to its nonholonomic constraints it cannot change its motion direction instantaneously. Only a purely kinematic problem is considered, and any effect due to dynamic constraints (e.g., acceleration bounds) is neglected. We provide a criterion for partitioning the configuration space of the problem into two regions, so that in one of them the DDR is able to control the system, in the sense that, by applying a specific strategy (also provided), the DDR can achieve any inter-agent distance (within an error bound), regardless of the actions taken by the OA. Particular applications of these results include the capture of the OA by the DDR and maintaining surveillance of the OA at a bounded variable distance.

Patient document formulation and archivisation in ERS

Krawczyk H., Knopa R., Kruk S. R., Mazurkiewicz A., Zieliński J.

Journal of Medical Informatics & Technologies

2001

Vol. 2, Part. 1

MI75--MI84

The format of patient documents created and stored in ERS system is presented. Its compatibility with DICOM standard is discussed, and the structure of a data base archiving such records are given.