Shipboard Controlled Atmosphere Plants: Selection, Installation, and Operation

1995 ◽  
Vol 32 (02) ◽  
pp. 141-146
Author(s):  
Martin D. Levin
Keyword(s):  
Control Systems ◽  
Safety Training ◽  
Controlled Atmosphere ◽  
Agricultural Produce ◽  
Atmosphere Control ◽  
Increasing Demand ◽  
Generating Equipment ◽  
Equipment And Pipelines ◽  
Selection Of ◽  
Classification Society

The increasing demand for marine transportation of agricultural produce under controlled atmosphere (CA) conditions is leading owners of refrigerated ships to provide permanently installed on-board nitrogen generating plants and atmosphere control systems. The selection of the shipboard CA gas generating plant must take into account the vessel type, the cargoes to be carried, and the range of controlled atmosphere conditions to be achieved for different commodities. The shipboard CA gas generating plant can be situated on the ship's weather deck, installed in the vessel's main or auxiliary machinery spaces, located in a separate CA compartment, or a combination of these options. Ventilation of all spaces containing CA generating equipment and pipelines, combined with atmosphere monitoring and alarms, and safety training of all concerned personnel, provides an acceptable level of safety. Experience with installation and operation of shipboard CA systems demonstrates that, with careful attention to sealing of the cargo spaces, proper equipment selection and installation in accordance with classification society guidelines, a successful shipboard CA installation can be achieved.

Amphoras in the Apollonia Museum Store

1981 ◽  
Vol 12 ◽  
pp. 75-78 ◽  
Author(s):  
John A. Riley
Keyword(s):  
Eastern Mediterranean ◽  
Eastern Mediterranean Region ◽  
Western Mediterranean ◽  
Second Century ◽  
Hellenistic Period ◽  
Royal Air Force ◽  
Agricultural Produce ◽  
Representative Selection ◽  
Coarse Wares ◽  
Selection Of

The store rooms of the Department of Antiquities at Apollonia contain pottery from excavations at Apollonia and Ras el Hilal, together with a few stray finds from other sites (including some from the sea collected by the Royal Air Force Aqualung Society in the 1950s and early 1960s). The bulk of this material dates in the later Roman period (i.e. sixth century A.D. onwards), but includes a little earlier Roman and some Hellenistic pottery. There is a representative selection of coarse wares, including amphoras, as yet unpublished. These are mainly in fragmentary condition but their typological range conforms with that from the well stratified and dated excavations at Berenice-Benghazi (Riley, in press).Publication of the more complete of these amphoras seems justified as there is a relative scarcity of published information on Roman amphoras from the eastern Mediterranean, at a time when many eastern types are being recognised in western Mediterranean excavated contexts (Panella, 1974; Hayes, 1976a; Riley, 1981). In addition, a brief consideration of the other amphoras helps to illustrate the diversity of trade in liquid agricultural produce within the eastern Mediterranean region. No locally made amphoras were noted on the Apollonia stone: all were imported into Cyrenaica.The Hellenistic period is represented by Rhodian (Inv. Nos. 321, 322 and 1582) and Knidian (Inv. Nos. 141 and 723) amphora fragments. There are several sherds of early Imperial amphoras, and attention has been drawn to these by Panella (1974). These include a first to second century A.D. Aegean type (ibid., 477, Ostia Form LXIII; Apollonia Box 2036, from Ras el Hilal); a Spanish garum amphora of the same period (ibid., 513, Ostia Form LXIII; Apollonia Inv. No. 256); several Tripolitanian amphoras of the first and second centuries A.D. (ibid., 562, Ostia Form LXIV; Apollonia Inv. Nos. 253, 254, 315 and 317); and a common Aegean amphora of the third and fourth centuries A.D. (ibid., 597, Ostia Form VI).

scholarly journals Electric Boosting and Energy Recovery Systems for Engine Downsizing

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4636 ◽  
Author(s):  
Mamdouh Alshammari ◽  
Fuhaid Alshammari ◽  
Apostolos Pesyridis
Keyword(s):  
Fuel Economy ◽  
Energy Recovery ◽  
Passenger Cars ◽  
Pros And Cons ◽  
Boosting Method ◽  
Increasing Demand ◽  
Selection Of

Due to the increasing demand for better fuel economy and increasingly stringent emissions regulations, engine manufacturers have paid attention towards engine downsizing as the most suitable technology to meet these requirements. This study sheds light on the technology currently available or under development that enables engine downsizing in passenger cars. Pros and cons, and any recently published literature of these systems, will be considered. The study clearly shows that no certain boosting method is superior. Selection of the best boosting method depends largely on the application and complexity of the system.

scholarly journals Counter-Interception and Counter-Exploitation Features of Noise Radar Technology

2021 ◽  
Vol 13 (22) ◽  
pp. 4509
Author(s):  
Gaspare Galati ◽  
Gabriele Pavan ◽  
Kubilay Savci ◽  
Christoph Wasserzier
Keyword(s):  
Information Theory ◽  
Technological Progress ◽  
A Priori ◽  
A Priori Knowledge ◽  
Noise Radar ◽  
Low Probability ◽  
Increasing Demand ◽  
Signal Processors ◽  
Function Information ◽  
Selection Of

In defense applications, the main features of radars are the Low Probability of Intercept (LPI) and the Low Probability of Exploitation (LPE). The counterpart uses more and more capable intercept receivers and signal processors thanks to the ongoing technological progress. Noise Radar Technology (NRT) is probably a very effective answer to the increasing demand for operational LPI/LPE radars. The design and selection of the radiated waveforms, while respecting the prescribed spectrum occupancy, has to comply with the contrasting requirements of LPI/LPE and of a favorable shape of the ambiguity function. Information theory seems to be a “technologically agnostic” tool to attempt to quantify the LPI/LPE capability of noise waveforms with little, or absent, a priori knowledge of the means and the strategies used by the counterpart. An information theoretical analysis can lead to practical results in the design and selection of NRT waveforms.

scholarly journals GIS technologies for selecting location of dams in the flood control systems

2019 ◽  
Vol 91 ◽  
pp. 07001 ◽  
Author(s):  
Mikhail Fedorov ◽  
Vladimir Badenko ◽  
Alexander Chusov ◽  
Vladimir Maslikov
Keyword(s):  
Control Systems ◽  
Flood Control ◽  
Control Volume ◽  
Flood Protection ◽  
Eastern Region ◽  
Engineering Structures ◽  
Gis Technologies ◽  
Far Eastern ◽  
Selection Of ◽  
Considerable Damage

Many floodplains are excluded from development because the floods cause considerable damage to people’s lives and properties. Systems of hydraulic engineering structures for flood protection working with hydropower facilities are analysed to solve the problem of reducing the flood control volume of hydropower station. Methods of reducing the risk of flooding in the river basin by means of a distributed system of detention self-regulated dams are discussed. A geoinformation method used to justify the selection of parameters of such dams, primarily location of dam that minimize impact on the environment (ecological factor), is presented. In the present study, a system of multipurpose flood protection self-regulated dams is analysed as the measures for mitigation of flash floods in the Far Eastern region of Russia.

scholarly journals Dataset of Targeted Metabolite Analysis for Five Taxanes of Hellenic Taxus baccata L. Populations

Data ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 22
Author(s):  
Eleftheria Dalmaris ◽  
Evangelia V. Avramidou ◽  
Aliki Xanthopoulou ◽  
Filippos A. Aravanopoulos
Keyword(s):  
Natural Populations ◽  
Population Level ◽  
Primary Sources ◽  
Taxus Baccata ◽  
Metabolite Analysis ◽  
Data Set ◽  
Baccatin Iii ◽  
Significant Seasonal Variation ◽  
Increasing Demand ◽  
Selection Of

Novel primary sources of one of the world’s leading anticancer agent, paclitaxel, as well as of other antineoplastic taxanes such as 10-deacetylbaccatin-III, are needed to meet an increasing demand. Among the Taxus species the promise of Taxus baccata L. (European or English yew) has been documented. In this study, the metabolite analysis of two marginal T. baccata populations in Greece (Mt. Cholomon and Mt. Olympus), located at the southeastern edge of the species natural distribution, are being explored. A targeted liquid chromatography – mass spectrometry (LC-MS/MS) analysis was used to determine the content of 10-deacetylbaccatin III, baccatin III, 10-deacetyltaxol, paclitaxel and cephalomannine in the needles of each of the populations from three sampling periods (spring, summer and winter). This is the first survey to generate a taxane targeted metabolite data set, since it derives from Hellenic natural populations that have not been explored before. Furthermore, it has used an extensive sample design in order to evaluate chemodiversity at the population level. The analysis revealed significant levels of chemodiversity within and among the investigated populations and significant seasonal variation that could be exploited for the selection of superior germplasm native to Greece, for yew plantations and further exploitation which is necessary for the production of important taxanes.

A Computer Experiment on Man-Machine Interaction

1998 ◽  
Vol 26 (2) ◽  
pp. 133-142 ◽  
Author(s):  
N. Aydin Hizal
Keyword(s):  
Computer Program ◽  
Automatic Control ◽  
Control Systems ◽  
Computer Experiment ◽  
Continuous Control ◽  
Operator Training ◽  
Interaction Experiment ◽  
Machine Interaction ◽  
And Training ◽  
Selection Of

A man-machine interaction experiment in the real-time continuous control sense is presented. The computer program is given and described, together with some representative results with regard to plant order, display effects and training effects. In particular, the importance of the selection of the displayed variable is emphasized. The experiment has been helpful in the appreciation of the effects of display gain selection and the inclusion of the derivative terms in the displayed variable, as well as demonstrating the importances of plant order and operator training, by allowing time response shape and criterion value comparisons. The nature of the conclusions reached can be generalized to automatic control, helping students of control systems.

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