Assessment of efficiency of distribution centre at different variants of freight traffic consolidation

2021 ◽  
pp. 22-27
Author(s):  
Elena Dmitrievna Pserovskaya ◽  
◽  
Anna Pavlovna Grefenshteyn ◽  
Keyword(s):  
Potential Benefit ◽  
High Efficiency ◽  
Positive Influence ◽  
Correct Selection ◽  
Freight Traffic ◽  
Distribution Centre ◽  
Selection Of

For the determination of a potential benefit from creation of a distribution centre the paper proposes a method and presents results of calculation of a decrease of total number of rides and total run of automobiles at various variants of goods consolidation. The authors have established a positive influence of the centre on intracity transportation. At the same time, high efficiency of the considered technology can be reached by involvement of a bigger number of consignees and by consolidation of a relatively small number of goods batches in one automobile at efficient routing and correct selection of location of a distribution centre.

Research and Application of High-Efficiency Multi-Cyclone Dust Removal

2011 ◽  
Vol 109 ◽  
pp. 400-404
Author(s):  
Yan Hong Yang ◽  
Da Fu Ni
Keyword(s):  
Structural Design ◽  
High Efficiency ◽  
Dust Removal ◽  
Working Principle ◽  
Selection Of

Performance and working principle of high-efficiency multi-cyclone were analyzed, and the structural design shortage of original high-efficiency multi-cyclone was pointed out. Its structure was researched and designed, including determination of setting chamber and pipe number, selection of material and the design of cyclones.

scholarly journals An Analysis of Choosing Gravity Anomalies for Solving Problems in Geodesy, Geophysics and Environmental Engineering

2020 ◽  
Author(s):  
Vytautas Puškorius ◽  
Eimuntas Paršeliūnas ◽  
Petras Petroškevičius ◽  
Romuald Obuchovski
Keyword(s):  
Gravity Field ◽  
Gravity Anomalies ◽  
Environmental Engineering ◽  
Correct Selection ◽  
Earth’S Gravity Field ◽  
The Earth ◽  
Pure Gravity ◽  
Geodynamic Processes ◽  
Selection Of

Gravity anomalies provide valuable information about the Earth‘s gravity field. They are used for solving various geophysical and geodetic tasks, mineral and oil exploration, geoid and quasi-geoid determination, geodynamic processes of Earth, determination of the orbits of various objects, moving in space around the Earth etc. The increasing accuracy of solving the above mentioned problems poses new requirements for the accuracy of the gravity anomalies. Increasing the accuracy of gravity anomalies can be achieved by gaining the accuracy of the gravimetric and geodetic measurements, and by improving the methodology of the anomalies detection. The modern gravimetric devices allow to measure the gravity with an accuracy of several microgals. Space geodetic systems allow to define the geodetic coordinates and ellipsoidal heights of gravimetric points within a centimeter accuracy. This opens up the new opportunities to calculate in practice both hybrid and pure gravity anomalies and to improve their accuracy. In this context, it is important to analyse the possibilities of detecting various gravity anomalies and to improve the methodology for detecting gravity anomalies. Also it is important the correct selection of the gravity anomalies for different geodetic, geophysical and environmental engineering tasks. The modern gravity field data of the territory of Lithuania are used for the research.

Effects of geometrical configurations of photobioreactors on the growth of marine benthic diatom Cylindrotheca closterium / Fotobiyoreaktörlerin geometrik konfigürasyonlarının sucul bentik diatom Cylindrotheca closterium üremesi üzerine etkisi

2016 ◽  
Vol 41 (2) ◽  
Author(s):  
Esra İmamoğlu
Keyword(s):  
High Efficiency ◽  
Bubble Column ◽  
Cost Effective ◽  
Batch Cultivation ◽  
Algal Biotechnology ◽  
Cylindrotheca Closterium ◽  
Photobioreactor Design ◽  
Reducing Sugar Concentration ◽  
Selection Of

AbstractObjective: For algal biotechnology, the primary barrier is the developing of cost effective photobioreactor operating in a high-efficiency. In this study, the effects of three different types of photobioreactors (bag, flat plate and bubble column) on the growth and sugar production of the diatom Cylindrotheca closterium were simultaneously investigated for 7 days of batch cultivation period.Methods: The photobioreactors were incubated at 21±2°C under the light intensity of 50 μmol photons m-2s-1 with a 12: 12 h light: dark cycle photoperiod at the air flow rate of 2 L min-1 for 7 days of batch productions. The turbidity (optical density), chlorophyll-a, exopolysaccharide (EPS) content and reducing sugar concentration were measured.Results: The maximum specific growth rate of 0.29 dayConclusion: The key is not only the selection of geometrical configuration of photobioreactor, but also the determination of the light penetration path for cost effective photobioreactor design operating in high efficiency related to the algal productions.

Mitotic cell responses to substrate topological cues are independent of the molecular nature of adhesion

2020 ◽  
Vol 13 (620) ◽  
pp. eaax9940 ◽  
Author(s):  
Ouranio Anastasiou ◽  
Rania Hadjisavva ◽  
Paris A. Skourides
Keyword(s):  
Mitotic Cell ◽  
Correct Selection ◽  
Spindle Orientation ◽  
Cell Cortex ◽  
Spatial Cues ◽  
Cell Responses ◽  
Division Axis ◽  
Molecular Nature ◽  
Selection Of

Correct selection of the cell division axis is important for cell differentiation, tissue and organ morphogenesis, and homeostasis. Both integrins, which mediate interactions with extracellular matrix (ECM) components such as fibronectin, and cadherins, which mediate interactions between cells, are implicated in the determination of spindle orientation. We found that both cadherin- and integrin-based adhesion resulted in cell divisions parallel to the attachment plane and elicited identical spindle responses to spatial adhesive cues. This suggests that adhesion topology provides purely mechanical spatial cues that are independent of the molecular nature of the interaction or signaling from adhesion complexes. We also demonstrated that cortical integrin activation was indispensable for correct spindle orientation on both cadherin and fibronectin substrates. These data suggest that spindle orientation responses to adhesion topology are primarily a result of force anisotropy on the cell cortex and show that integrins play a central role in this process that is distinct from their role in cell-ECM interactions.

scholarly journals Gas desulfurization adsorption technology

Paliva ◽  
2021 ◽  
pp. 123-130
Author(s):  
Karel Ciahotný
Keyword(s):  
Activated Carbon ◽  
Sorption Capacity ◽  
High Efficiency ◽  
Sulfur Compounds ◽  
Correct Selection ◽  
Adsorption Technology ◽  
History Of ◽  
High Concentrations ◽  
Further Development ◽  
Selection Of

Adsorption technologies used for gas desulfurization are a widespread technique which, due to its relative simplicity, are widely used to the purification smaller volumes of gas. However, for their trouble-free and economical use, it is necessary to respect several basic requirements for the selection of suitable types of adsorbents with respect to the specific composition of the purified gas. The article provides a brief overview of the history of the development of adsorption technologies and also provides several different examples of the operational use of this technology for the purification of gases containing high concentrations of sulfur substances. Furthermore, the principles of correct selection of a suitable adsorbent for specific application cases are also specified here. Iron oxide adsorbents were used in the early times of the operation of the technology, which were inexpensive but had a relatively low sorption capacity for sulfur compounds. Therefore, sorbents based on iron oxides have been gradually replaced by more powerful, but also more expensive sorbents based on activated carbon. Initially, activated carbon without impregnation was used, the production of which took place in the Czech Republic on an industrial scale. By the further development of impregnated types of activated carbon and their introduction into industrial production, these adsorbents have been also used in adsorption technologies intended for gas desulfurization. Their sorption capacity is much higher in comparison with non-impregnated types of activated carbon, because the impregnants used convert sulfur compounds from gas into non-volatile substances (elemental sulfur, sulfides, polysulfides). This ensures a long service life of the adsorbent and high efficiency of gas purification from sul-fur substances.

scholarly journals Evaluation of roadside service centers. Case study: Zahedan to Khash Road

2017 ◽  
Vol 7 (4) ◽  
pp. 374-381
Author(s):  
Maryam Karimiyan Bostani ◽  
Fateme Hashemzehi ◽  
Mahmood Reza Anvari
Keyword(s):  
Correct Selection ◽  
Transportation Industry ◽  
Related Factors ◽  
Job Opportunities ◽  
Selection Systems ◽  
Research Findings ◽  
The City ◽  
Selection Of

In the recent century, the excessive and unplanned growth of urbanism and inattention to the proper and correct selection of locations for roadside uses, especially roadside services, have led to the appearance of problems such as lack of spaces for service centers, inappropriate access, and other problems. The strategic location of the city of Zahedan among other cities of Sistan and Baluchistan Province and its connection to the national corridors requires development and growth of transportation industry and improvement of its performance. Some of the utmost important centers that have to be established for this purpose on the roadsides in the required quantities are roadside service and welfare centers. Therefore, in order to maintain and promote the security of the roads in the country, the establishment of such centers requires studies, evaluations and eventually, determination of appropriate and secure locations. In this study, considering the necessity of establishing service and welfare centers on the Zahedan to Khash Road, first, the existing centers were evaluated from the perspectives of passengers, then, by the use of site selection systems, some locations were determined in the high traffic parts of this road. The research methodology in this study is descriptive-analytical which is used in order to analyze the collected data. The research findings show that according to the passengers, the conditions of roadside services on the Zahedan to Khash Road and the existing infrastructures are weak. However, they are satisfied with social and security-related factors. The passengers also stated that these roadside service centers have created job opportunities in the region. They also have been effective in providing security of the roads.

DETERMINING THE DESALINATION UNIT COMPOSITION FOR COSTAL AREAS AND SMALL ISLANDS USE ANALYTIC HIERARCHY PROCESS

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Imam Setiadi ◽  
Dinda Rita K. Hartaja
Keyword(s):  
Analytic Hierarchy Process ◽  
Energy Demand ◽  
Pairwise Comparison ◽  
Small Islands ◽  
Ahp Method ◽  
Analytic Hierarchy ◽  
Comparison Research ◽  
Hierarchy Process ◽  
Selection Of

Selection of the appropriate composition desalination units can be done with a variety of method approaches, one of the method is the Analytic Hierarchy Process. In determining the desalination unit with AHP method to consider is setting a goal, an alternative criteria and pairwise comparison. Research for the determination of the exact composition of the desalination unit in order to achieve sustainable drinking water suppy in coastal areas and small islands has been conducted. The results of the study are as follows, the energy demand of 50.83%, operator costs of 26.64%, maintenance costs of 14.13% and chemical requirement 8.4%. For an alternative composition desalination unit of RO 10 m3 / day is the best alternative composition with value of 59.61%, the composition of the next alternative is RO 20 m3/ day of 30.40% and the last alternative of the desalination unit composition is RO 120 m3/ day of 09.99%.Key words : Desalination, Mukti Stage Flash Composition, AHP

Optimization of the selection of analysis methods for the determination of naturally occurring radionuclides

Kerntechnik ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. 118-121
Author(s):  
T. Heinrich ◽  
L. Funke ◽  
M. Köhler ◽  
U.-K. Schkade ◽  
F. Ullrich ◽  
...  
Keyword(s):  
Naturally Occurring ◽  
Analysis Methods ◽  
Naturally Occurring Radionuclides ◽  
Selection Of
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