scholarly journals Thin Vaulted Tile Structure as a Sustainable Slab

2020 ◽  
Vol 9 (9) ◽  
pp. 132-134
Keyword(s):  
Low Cost ◽  
Literature Survey ◽  
Rural Settlements ◽  
The Core ◽  
Roof Structure ◽  
The Earth ◽  
Local Labour ◽  
Concrete Materials ◽  
The Impact ◽  
Local Materials

The concept of sustainability for roof structure becomes most effective because slab consumes the highest amount of cement and steel in the building. This increases carbon footprint, which is a measure of the impact caused by the utilization of natural resources, eventually affecting the earth, and it becomes a subject of higher cost also. The objective of the paper is to find a safe, economical and sustainable roofing structure suitable for suburban and rural settlements. The literature survey carried out deeply and the potential is observed in tile vaulted structures. The core reasons behind adopting a vaulted structure are, it avoids using steel and concrete materials in construction, utilizes local labour, and low-cost local materials for construction. This predominantly becomes the primary factor in deciding the construction of an economical roofing structure for multiple dwelling units in rural and suburban settlements to provide a safe, sustainable and maintenance-free roofing system using tile vaulted structure.

Low-Cost Technology for Water Pollution Control in Developing Countries

1982 ◽  
Vol 14 (9-11) ◽  
pp. 1337-1352 ◽  
Author(s):  
G G Cillié
Keyword(s):  
Water Pollution ◽  
Developing Countries ◽  
United Nations ◽  
Pollution Control ◽  
Low Cost ◽  
Water Pollution Control ◽  
Local Labour ◽  
International Water ◽  
Design And Methods ◽  
Local Materials

An estimated 80 % of all illnesses in developing countries is in one way or another related to water. In order to alleviate this most serious condition, the united Nations has initiated the “International Water Decade”, for which the estimated costs are $600 000 million, a sum which is far beyond any available means. By application of “low-cost technology” this sum could be reduced to $100 000 million which brings the objective within the reach of possibility. Details are given of the design and methods of construction of units which are best suited to the specific requirements and which would be simple, reliable and economical to operate. These can be constructed largely from local materials and by local labour. The need for appropriate training of both operators and the user population is stressed.

Magnetic to the Core - Communicating paleomagnetism with hands-on activities

2020 ◽  
Author(s):  
Annique van der Boon ◽  
Greig Paterson ◽  
Janine Kavanagh ◽  
Andy Biggin
Keyword(s):  
Magnetic Field ◽  
General Public ◽  
Magnetic Polarity ◽  
Lessons Learned ◽  
Family Science ◽  
The Core ◽  
The Earth ◽  
Hands On ◽  
The Uk ◽  
The Impact

<p>With geoscience student numbers dwindling, there is a strong need for Earth scientists to enthuse a new generation of prospective students. We created several hands-on activities to introduce members of the general public of all ages to the fundamentals of, and current research in paleomagnetism. We developed these activities at different outreach events in the UK, such as a family science fair (at the Ness Gardens) and a holiday workshop (at the Victoria Gallery & Museum). In the first week of July, 2019, we contributed to the Royal Society Summer Science Exhibition, a science exhibition in London with almost 14,000 visitors of the general public, including many school groups. Visitors came from all educational backgrounds. We had a stand that consisted of 4 hands-on experiments, and an informative backdrop. The four activities allowed visitors to explore the range of tasks that a paleomagnetist does, from the collection and measurement of samples to understanding the behaviour of the Earth’s magnetic field. Visitors could measure real lavas from Iceland on a custom-built magnetometer that was designed specifically for outreach, and determine the magnetic polarity of the samples. We also created an information booklet with ’10 things you might not know about Earth’s magnetic field’, which is openly available under a CC-license. To measure the impact of our stand on visitors’ knowledge of paleomagnetism, we designed a quiz. Our results show that especially for school kids, our stand had a significant impact on their knowledge of the Earth’s magnetic field. In this contribution we share lessons learned through designing the ‘Magnetic to the Core’ stand, hands-on activities and evaluations.</p>

Future of Earth observation at NASA

2020 ◽  
Author(s):  
Sandra Cauffman
Keyword(s):  
Low Cost ◽  
Earth Observation ◽  
Decision Makers ◽  
Wide Angle ◽  
Special Session ◽  
Significant Progress ◽  
The Earth ◽  
The World ◽  
Wide Angle Lens ◽  
The Impact

<p>Earth Observing satellites provide a wide angle lens with which to view our home planet in a systematic manner. Significant progress has been made over the last few decades in understanding the Earth as a system and the impact of human actions. Remote global observations provide knowledge that can inform policies of specific features of our world in transition. As the stakes get higher with more population, infrastructure, and higher stress on ecosystems, how are leading space agencies around the world taking on this challenge at both the national, regional and international level?  How is the advent of improved access to space and of new constellations of capable, low cost buses enabling new ways of investigating the Earth and providing operational services? Further, the data from this armada of spacecraft being returned to Earth are considerably beyond any level ever experienced previously. How are the agencies addressing this challenge of processing and storing unpresented levels of data and getting it in the hands of the decision makers? How well are the international coordination bodies working? Senior representatives from various space agencies will participate in this special session, to address the issues mentioned above and discuss the path forward.</p>

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira
Keyword(s):  
Amorphous Silicon ◽  
High Throughput Screening ◽  
Simulation Analysis ◽  
Low Cost ◽  
Deposition Process ◽  
Large Area ◽  
Sidewall Roughness ◽  
Sensing Applications ◽  
Fabrication Defects ◽  
The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

Soziale Disziplinierung im flexiblen Kapitalismus

2004 ◽  
Vol 34 (136) ◽  
pp. 339-356
Author(s):  
Tobias Wölfle ◽  
Oliver Schöller
Keyword(s):  
Social Welfare ◽  
Second Step ◽  
Social Rights ◽  
Federal Law ◽  
Capitalist Development ◽  
The Core ◽  
The Past ◽  
The Impact ◽  
Municipal Level

Under the term “Hilfe zur Arbeit” (aid for work) the federal law of social welfare subsumes all kinds of labour disciplining instruments. First, the paper shows the historical connection of welfare and labour disciplining mechanisms in the context of different periods within capitalist development. In a second step, against the background of historical experiences, we will analyse the trends of “Hilfe zur Arbeit” during the past two decades. It will be shown that by the rise of unemployment, the impact of labour disciplining aspects of “Hilfe zur Arbeit” has increased both on the federal and on the municipal level. For this reason the leverage of the liberal paradigm would take place even in the core of social rights.

Advancing dairy farming profitability through research

2001 ◽  
pp. 17-22
Author(s):  
J.R. Caradus ◽  
D.A. Clark
Keyword(s):  
Research And Development ◽  
Dairy Cow ◽  
Low Cost ◽  
Pasture Management ◽  
Nitrogen Fertiliser ◽  
Grass Endophyte ◽  
Forage Species ◽  
Development Outcomes ◽  
Dairy Cow Nutrition ◽  
The Impact

The New Zealand dairy industry recognises that to remain competitive it must continue to invest in research and development. Outcomes from research have ensured year-round provision of low-cost feed from pasture while improving productivity. Some of these advances, discussed in this paper, include the use of white clover in pasture, understanding the impacts of grass endophyte, improved dairy cow nutrition, the use of alternative forage species and nitrogen fertiliser to improve productivity, demonstration of the impact of days-in-milk on profitability, and the use of feed budgeting and appropriate pasture management. Keywords: dairy, profitability, research and development

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