Process of casting heavy slips Patent

Freeze casting of metal ceramic and refractory compound powders into plastic slip

Development Of A'Briquette Compressing Machine

A lov;-cost agritlJ!t-~ral and wood waste briquett~ compr~g~ih6 rTii:ichlne that can produce six (6) briquettes of about 300 mm long at a time was designed and fabricated for use in smali and medium scale industry. The cjesign was based on the principle of hydraulic pressure transmission (HPT) and the slider crank ejection mechanism (SCEM). The capacity of the machine which can be operated by two persons is about 1600 kg of briquettes per da

Status report: Data management program algorithm evaluation activity at Marshall Space Flight Center

An algorithm evaluation activity was initiated to study the problems associated with image processing by assessing the independent and interdependent effects of registration, compression, and classification techniques on LANDSAT data for several discipline applications. The objective of the activity was to make recommendations on selected applicable image processing algorithms in terms of accuracy, cost, and timeliness or to propose alternative ways of processing the data. As a means of accomplishing this objective, an Image Coding Panel was established. The conduct of the algorithm evaluation is described

Variable-resolution Compression of Vector Data

The compression of spatial data is a promising solution to reduce the space of data storage and to decrease the transmission time of spatial data over the Internet. This paper proposes a new method for variable-resolution compression of vector data. Three key steps are encompassed in the proposed method, namely, the simplification of vector data via the elimination of vertices, the compression of removed vertices, and the decoding of the compressed vector data. The proposed compression method was implemented and applied to compress vector data to investigate its performance in terms of the compression ratio, distortions of geometric shapes. The results show that the proposed method provides a feasible and efficient solution for the compression of vector data, is able to achieve good compression ratios and maintains the main shape characteristics of the spatial objects within the compressed vector dat

Prospects of Decarbonizing Industrial Areas in the Baltic States by Means of Alternative Fuels

This work has been supported by the National Research Programme, project “Trends, Challenges and Solutions of Latvian Gas Infrastructure Development” (LAGAS), No. VPP-EM-INFRA-2018/1-0003.All three Baltic States have reached good fi gures regarding the change in total greenhouse gas emissions from transport during 1990-2017. Particularly successful is Lithuania, showing a negative value of -2.7%. Latvia considerably lags behind Estonia (+15.1% vs. +1.5%). Amid the achievement of Latvian scientists, engineers and merchants, the authors point out the work of Lithuanian engineers who investigated how gaseous hydrogen affects the parameters of diesel internal combustion engine. Important to note that in the Baltic States, the activities of inland waterway vessels and the shunting locomotives are concentrated in only a few main cities. Regarding that, Baltic scientists and environment specialists nowadays are developing plans also for local air pollution decreasing, which can be carried out in particular cities or industrial areas, thereby allowing for improvements in air cleanliness and the ecological situation in concerned local area. A numerical estimation shows that applying the NYSMART technology, introduced in this paper, will make areas of active action of the high-volume diesels cleaner in the same amount as gained by photosynthesis of the urban green flora. In recent years, the developed technology of hydraulic piston compression allows producing numerous different vehicle fueling appliances for the CNG/bio-CNG fuel. The further development of this technology means the producing of various solutions, applicable at biogas/biomethane production sites, for CNG/bio-CNG compression, transportation and fast natural gas vehicles refueling in a cost effective and convenient way. The hydraulic piston compression and NYSMART have a potential in small and medium-scale technologies and therefore need to be developed further for applications with hydrogen. Production of biomethane and green hydrogen is delayed by the lack of state aid programmes in the Baltic States. Lithuania is on the way to change the situation in the coming years, with one of the first biomethane gas production plants due to be built near Panevėžys, in Šilagalys near the Via Baltica motorway. Summing up all aspects, the preconditions for the use of alternative fuels in the Baltic States are similar, allowing one to learn from other’s experience and to consider joint projects. © 2022. Journal of Ecological Engineering All Rights ReservedNational Research Programme VPP-EM-INFRA-2018/1-0003; Institute of Solid State Physics, University of Latvia has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2

Principal Component Analysis Of Synthetic Galaxy Spectra

We analyse synthetic galaxy spectra from the evolutionary models of Bruzual&Charlot and Fioc&Rocca-Volmerange using the method of Principal Component Analysis (PCA). We explore synthetic spectra with different ages, star formation histories and metalicities, and identify the Principal Components (PCs) of variance in the spectra due to these different model parameters. The PCA provides a more objective and informative alternative to diagnostics by individual spectral lines. We discuss how the PCs can be used to estimate the input model parameters and explore the impact of noise in this inverse problem. We also discuss how changing the sampling of the ages and other model parameters affects the resulting PCs. Our first two synthetic PCs agree with a similar analysis on observed spectra obtained by Kennicutt and the 2dF redshift survey. We conclude that with a good enough signal-to-noise (S/N>> 10) it is possible to derive age, star formation history and metallicity from observed galaxy spectra using PCA.Comment: 11 pages, 17 figures, submitted to MNRA

Humanitarian remains: erasure and the everyday of camp life in Northern Uganda

The impacts of protracted displacement can be understood through the spatial and material afterlives of war. In the context of Northern Uganda, the experiences of conflict that are interpreted in memorialisation are often reflected of how governments and aid agencies administered life during war. This article examines leftover aid rations, archives, former displacement camp sites and even unmarked graves as evidence to better understand what happens when people try to return "to normal"after decades of war between the Government of Uganda and the Lord's Resistance Army. It asks what narrative and material erasure implies for survivors who seek to create memorials to reflect on the war and have come to find that the past has been destroyed. Understanding how forgetting occurs, whether intentional or not, illuminates the difficulty of using archival material or artefacts as tools for remembrance projects. The article undertakes an examination of the everyday experiences of displacement and traces of aid assistance to show how memorial efforts can better make sense the past in the present