scholarly journals Assessment of the Impact of Sheep and Goat Pox Lesions on Skin Quality in Selected Ware Houses of Central Ethiopia

2021 ◽  
Vol Volume 12 ◽  
pp. 199-204
Author(s):  
Ambaye Kenubih ◽  
Bedaso Mammo ◽  
Getachew Terefe ◽  
Tewodros Fentahun
2021 ◽  
Vol 13 (12) ◽  
pp. 6790
Author(s):  
Dula Etana ◽  
Denyse J. R. M. Snelder ◽  
Cornelia F. A. van Wesenbeeck ◽  
Tjard de Cock Buning

Although most micro-level studies show the positive impact of adaptation on food security and household income, these are only a few of the outcomes adaptation is intended to achieve. Farmers’ livelihoods function in complex ways such that an understanding the multidimensional outcome of adaptation is important. These necessitate the use of multiple indicators in the evaluation of the impact of adaptation. Based on data collected from 810 randomly selected households in central Ethiopia, this study investigates the impacts of adaptation strategies on the sustainability of the livelihoods of farmers. The economic, social, and environmental outcomes were integrated to construct the Livelihood Sustainability Index. The endogenous switching regression model, which accounts for unobserved heterogeneity and possible endogeneity, was used to examine the impact of using adaptation strategies. With a mean score of 41, the farmers had lower levels of livelihood sustainability. Farmers switching crop type, diversifying crops, planting improved seeds, engaging in land management activities, and using irrigation had a higher livelihood sustainability index compared to the counterfactual case in which they did not use them. Non-farm employment and migration significantly increased livelihood sustainability for the using households. However, had these factors been used by the non-users, it would have resulted in reduced livelihood sustainability. Farmers using more than four adaptation strategies had more sustainable livelihoods than using fewer strategies. The findings affirm that adaptation contributes to livelihood improvement. However, since the farmers are far from achieving a higher level of sustainable livelihoods, policies shall focus on maximizing the returns to be obtained from using adaptation strategies. This includes improving access to ecosystem services through environmental protection measures, increasing production efficiency through improved access to and proper utilization of farm inputs, expanding irrigation facilities, creating decent employment opportunities, and enhancing farmers’ skills through entrepreneurial training.


1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten

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.


1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.


1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.


1997 ◽  
Vol 161 ◽  
pp. 189-195
Author(s):  
Cesare Guaita ◽  
Roberto Crippa ◽  
Federico Manzini

AbstractA large amount of CO has been detected above many SL9/Jupiter impacts. This gas was never detected before the collision. So, in our opinion, CO was released from a parent compound during the collision. We identify this compound as POM (polyoxymethylene), a formaldehyde (HCHO) polymer that, when suddenly heated, reformes monomeric HCHO. At temperatures higher than 1200°K HCHO cannot exist in molecular form and the most probable result of its decomposition is the formation of CO. At lower temperatures, HCHO can react with NH3 and/or HCN to form high UV-absorbing polymeric material. In our opinion, this kind of material has also to be taken in to account to explain the complex evolution of some SL9 impacts that we observed in CCD images taken with a blue filter.


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