scholarly journals Long Space Missions and the Problem of Geomagnetic Deprivation of Human Population and Astronauts on the Earth, Moon and Mars

2014 ◽  
Vol 7 (1) ◽  
pp. 22-28
Author(s):  
Alexander Trofimov
Keyword(s):  
Human Population ◽  
Space Missions ◽  
The Earth

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

scholarly journals GHG emissions in KG-CO2 / M2 generated by a House Type INFONAVIT

2019 ◽  
pp. 10-23
Author(s):  
Humberto Aceves-Gutierrez ◽  
Oscar López-Chávez ◽  
Santa Magdalena Mercado-Ibarra ◽  
Cesar Alejandro Contreras-Quintanar
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Urban Growth ◽  
Greenhouse Effect ◽  
Human Population ◽  
Building Materials ◽  
Ghg Emissions ◽  
Iso 14040 ◽  
Fundamental Factor ◽  
The Earth

Climate change is one of the main current problems, it concerns the entire human population since its effects are worldwide, especially now we have seen its consequences, according to Menghi (2007), the average global temperatures grew by more than 0.5 ° C in the last century, and the glaciers are disappearing from the earth. The greenhouse effect generated mainly by the gases of the same name (GHG), is the fundamental factor of climate change. Construction is one of the ways in which the human being contaminates in a constant way this due to urban growth and the demand for infrastructure that this generates. This research has the purpose of determining the KG-CO2 / M2 generated by a 44 m2 house of interest type INFONAVIT using the Life Cycle methodology (ACV) of the products or materials, established in ISO 14040, employee an inventory of KG-CO2 emissions from building materials, obtained from various bibliographic sources and databases and using the work volumes required to build the house. The results obtained of 161.57 Kg-CO2 / M2.

Space debris: ex facto sequitur lex

1988 ◽  
Vol 1 (1) ◽  
pp. 89-96
Author(s):  
Tanja L. Zwaan
Keyword(s):  
Space Debris ◽  
Outer Space ◽  
Space Missions ◽  
Variable Size ◽  
The Earth

Unfortunately, today's exploration of outer space is exposed to a rapidly expanding collection of what has come to be called space debris. Innumerous objects of variable size ranging from tiny paint chips to entire - defunct - satellites and produced by various causes, such as collisions, explosions, or simply exhaustion of fuel, are rotating around the Earth and create dangers to our space missions.

scholarly journals Numbers for an Alternative Anthropocene: Population Counting and Humanity’s Place Among Other Species in Daniel Keys Moran’s Tales of the Continuing Time // Cifras para un antropoceno alternativo: Recuento de población y el lugar de la humanidad entre otras especies en Tales of the Continuing Time de Daniel Keys Moran

2018 ◽  
Vol 9 (1) ◽  
pp. 66-84
Author(s):  
Keri R Stevenson
Keyword(s):  
Population Growth ◽  
Science Fiction ◽  
Human Population ◽  
Animal Studies ◽  
Genetically Engineered ◽  
Moran’S I ◽  
Moran's I ◽  
World Government ◽  
Human Population Growth ◽  
The Earth

     This article approaches the science fiction series Tales of the Continuing Time from an animal studies perspective: examining Daniel Keys Moran’s future earth which uses the means of respecting other intelligent species (artificial intelligences, genetically engineered beings, and aliens) rather than enforced bans on fertility to stop human population growth. Moran’s world government, the Unification, does not enforce such bans effectively, despite taking over the Earth for this purpose. Moran’s novels offer a picture of what happens when the rhetoric around population growth, and possibly justified fear, obstructs human will and human self-restraint. Resumen      Este artículo aborda la saga de ciencia ficción Tales of the Continuing Time desde la perspectiva de los estudios de los animales. Así, se investiga la Tierra futurista de las novelas de Daniel Keys Moran, en las cuales se representa un respeto hacia otras especies inteligentes (inteligencias artificiales, seres humanos genéticamente modificados, y extraterrestres) para parar el crecimiento poblacional, en vez de narrativizar políticas de prohibición la fertilidad. El gobierno planetario de las novelas, la Unificación, no impone tales prohibiciones de manera eficaz, a pesar de tomar el control del planeta con este fin. Las novelas de Moran ofrecen una imagen de lo que ocurre cuando la retórica sobre el crecimiento poblacional y el terror posiblemente justificado obstruyen la voluntad y el autocontrol humanos.

Agroecosystem energy, ecological human imprint and economic sustainability: Analysis and impacts

2021 ◽  
pp. 147-177
Author(s):  
Safwat H. Shakir Hanna ◽  
Gian Paolo Cesaretti
Keyword(s):  
Population Growth ◽  
Natural Resources ◽  
Human Population ◽  
Current Trend ◽  
Life Cycles ◽  
Current Status ◽  
World Population ◽  
Human Beings ◽  
Human Population Growth ◽  
The Earth

Agroecosystem energy is an essential part of the natural resources available to humans for use and the continuation of Earth's life cycle. Without energy, life on this Earth will stop, and the drivers of all ecological life cycles will not be able to continue function. Energy is an essential factor that makes the working process of human survivability possible. According to World Population Clock, the current status of human population growth is in an alarming situation (i.e., 7.81 billion people and continues to increase) [World Population Clock 2020 Accessed September 20, 2020][ World Population Clock, 2020). Therefore, the ecological human imprint will impact all Earth's natural resources, in the forms of more consumptions and demands that will have impacts on the global social and economic issues globally. Sustainability will be accomplished if we live within the concept of Nature, controlling our human population growth to reduce the impacts on natural resources' demands. In this respect, sustainability will not be achieved by economic growth alone; instead, the biosphere natural resources must replenish it and allow the natural resources to regenerate itself to support the growing human population. The present paper will assess the agroecosystem energy continuing ongoing demands and availability concerning human population growth by modeling different scenarios. According to our model, the human population growth will reach 10 billion people or more by the year 2050 at the current trend, and we may be faced with shortening the availability of energy. It is important to stress that the energy should be replenished through non-tradition energy supply, and we have to concentrate on renewable energy, which we can develop to the extent of harvesting this energy in efficient ways. An example of the needs of energy in the agroecosystem is to calculate how much enough the Earth has to support the human beings. In this regard, if each human being is in need of 2000 calories/per day on average, this means that globally the Earth has to produce more than 5694 trillion calories per year. The question is whether the Earth can create these calories to support 7.81 billion people, and we need more calories when the human population grows to be more than 7.81 bil lion people. Therefore, engineering of the Earth agroecosystem should be significant, and we have to think about how we accomplish it. Additionally, we need to sustain our environment by conserving our water resources and keeping our global climate environmentally in the best condition to maintain international economic and social standards. Further, in this paper, we will discuss the impacts of changing different parameters that affect global agroecosystem energy.

scholarly journals How Many People can the Earth Support?

1998 ◽  
Vol 4 (2) ◽  
pp. 170
Author(s):  
Sondi Bootle
Keyword(s):  
Population Growth ◽  
Carrying Capacity ◽  
Human Population ◽  
Modern Technology ◽  
Human Population Growth ◽  
The Past ◽  
The Earth ◽  
The Future ◽  
Heated Debate ◽  
Human Carrying Capacity

A much-heated debate has evolved over the past few decades regarding the future of human population growth and the number of humans that the planet Earth is able to sustain. Some claim that Earth has already reached its human carrying capacity, where others argue that the carrying capacity of the planet is limitless given modern technology. What is clear is that the carrying capacity of the Earth and the future of human population growth is a subject of much uncertainty.

People and Population

1965 ◽  
Vol 17 (3) ◽  
pp. 431-439 ◽  
Author(s):  
S.N. Afriat
Keyword(s):  
Human Population ◽  
Human Existence ◽  
The Earth ◽  
The World ◽  
The Future

The human population is the base of human existence. This, when considered, seems an inescapable proposition. But in the minds of most men it must have an absurd remoteness. The process of population has seemed like primordial creation itself, hardly a thing to be touched by mere scruple. Beyond the scope of any deliberation, the peopling of the earth has, for mankind as a whole, remained unquestioned as the earth, an axiom behind which there was no going and from which all proceeded. But according to a relentless gathering of awareness, as witnessed in an abundance of recent writings, it appears that history has marched to a new point. The condition of the world is being modified by a constellation of emergencies, and any observation and reflection on them, any rough glance at the outlines of trends in the life of the world, points to the swelling flood of population as the central reality in every perspective on the future.

Human Population and Environmental Problems

1974 ◽  
Vol 1 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Paul R. Ehrlich
Keyword(s):  
Population Growth ◽  
Natural Environment ◽  
Human Population ◽  
Developed Countries ◽  
Environmental Problems ◽  
Turn Of The Century ◽  
Weather Patterns ◽  
The Earth ◽  
The Face ◽  
Zero Population Growth

Human population growth is clearly outstripping the possibilities of increasing the supply of food and other prerequisites for satisfactory existence. Already, with around four thousand million people on Earth, the race appears to have been lost by agriculture. The prospect of doubling this population by shortly after the turn of the century is bleak indeed. It is the belief of many, however, that zero population growth will be reached earlier by a catastrophic increase in the number of deaths—most probably from starvation. This also bodes ill for conservation; for as people get more and more hungry, their behaviour towards wildlife and what remains of the natural environment is going to become more and more reckless. The destruction of both wildlife and its habitat may be expected to extend to quite devastating proportions, which will require understanding action in both over- and under-developed countries to counter with any degree of success.Man is inexorably changing the face of the Earth and weather patterns in directions which could have all manner of widespread ill-effects, and already have had some catastrophic local ones. Yet more and more of the world's productive lands are being paved with concrete, and the productivity of even wider areas is being permanently lost through erosion and laterization following the clearing of forests and other binding vegetation. Simultaneously, many strains of crop plants are being lost which are essential to humanity because they enable plant breeders to develop new agricultural varieties to help keep abreast of changes in pests and weather, and to raise production levels.

On the physical origin of the homochirality of life

2005 ◽  
Vol 13 (S2) ◽  
pp. 49-59 ◽  
Author(s):  
DAVID B. CLINE
Keyword(s):  
Space Missions ◽  
Racemic Mixture ◽  
Physical Origin ◽  
Physical Mechanisms ◽  
The Earth ◽  
Future Space ◽  
The Galaxy

It seems to be well known that life cannot arise in a racemic mixture of molecules (L=D). The various physical mechanisms that could influence the homochirality of the molecules responsible for life are reviewed together with a model where these molecules might be produced in the galaxy prior to the formation of the earth. The focus is on the influence of a powerful supernovae explosion to affect the homochirality of these molecules. Possible tests of this concept with meteorites and future space missions are described.

scholarly journals 2.1.1 In-Situ Records of Interplanetary Dust Particles - Methods and Results

1976 ◽  
Vol 31 ◽  
pp. 143-158 ◽  
Author(s):  
H. Fechtig
Keyword(s):  
Interplanetary Dust ◽  
Space Missions ◽  
Dust Particles ◽  
Measure Data ◽  
Interplanetary Dust Particles ◽  
Detection Techniques ◽  
The Earth ◽  
Future Space

AbstractA review is given on the techniques used to record and to quantitatively measure data of individual interplanetary dust particles. New developments in detection techniques are briefly discussed.The main results from recent space missions at about 1 AU and in the earth-moon neighborhood are discussed and compared with the flux results from lunar microcrater studies. Spatial anisotropies and time fluctuations are found indicating that the earth is exposed to two main micrometeoroid dust populations: the “apex”-population and the B-meteoroids. The near planet-dust enrichments measured by HEOS 2 near the earth and by the Pioneer 10/11 near Jupiter are emphasized. The experimental data strongly suggest a fragmentation process associated with the earth. The role of the moon as a dust source is discussed. The important problems in the dust field for future space missions are summarized.

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