نتایج جستجو برای: sustainable 431 and unsustainable 267
تعداد نتایج: 16850958 فیلتر نتایج به سال:
Data drawn from a global compilation of studies quantitatively confirm the long-articulated contention that erosion rates from conventionally plowed agricultural fields average 1-2 orders of magnitude greater than rates of soil production, erosion under native vegetation, and long-term geological erosion. The general equivalence of the latter indicates that, considered globally, hillslope soil ...
ABSTRACT In the past few years, dairy industry has become one of the fastest growing sectors in the packaged food industry of Vietnam. However, the value-added creation among different activities in the value chain of Vietnam dairy sector is distributed unequally. In the production activities, the dairy farmers gain low value-added rate due to high input cost. Whereas the processing activities,...
This paper investigated the wear performances of Y2O3 doped MA6000 (Ni-Cr-Al) alloy produced by mechanical alloying (MA). Produced, all powders were pre-formed cold pressing and sintered in a vacuum environment. Sintered MA6000- X% superalloys characterized scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD) analysis, density, hardness measurements....
As long-chain fatty acids (LCFA) of the n-3 series are critically important for human health, fish consumption has considerably increased in recent decades, resulting in overfishing to respond to the worldwide demand, to an extent that is not sustainable for consumers' health, fisheries economy, and marine ecology. In a recent study, it has been shown that whole rye (WR) consumption improves bl...
In this election year, U.S. national spending on health care will reach $2.8 trillion, or about 18% of total spending on all goods and services. This high level of spending reduces our ability to invest in other important parts of the economy and also adds to our unsustainable national debt. There is wide agreement that we must find ways to bend the health care cost curve. Taking different appr...
For remote underdeveloped and sparsely populated regions, the use of national power grids to provide electricity can be both unsustainable and impractical. In recent years, decentralised renewable power has gained popularity, endowing social benefits to the local inhabitants through clean rural electrification. However, power reliability and system autonomy are often the primary technical conce...
The traditional linear industries led to dwindling resources and even exhaustion, as well as worsening pollution, it is a short-sighted unsustainable developing mode of the economy. Ecological industry is to realize the harmonious development between economy and environment by planning industrial systems according to material cycle in the natural ecological system. The Eco-industry coordinates ...
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