BACKGROUND Crop genetic resources are important components of biodiversity. However, with the large-scale promotion of mono-cropping, genetic diversity has largely been lost. Ex-situ conservation approaches were widely used to protect traditional crop varieties worldwide. However, this method fails to maintain the dynamic evolutionary processes of crop genetic resources in their original habita...

rivers can be contaminated with different pollutants such as trout farms. evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. in current work, the effect of constructed trout farms near the deinachal river on some physicochemical properties namely chemical oxygen demand (cod), biological oxygen demand (bod5), dissolved oxygen ...

Meeting basic food needs involves using photosynthesis to harvest solar energy over extensive areas. This work-intensive process can consume the majority of human productive capacity leaving only small amounts of this capacity to provide other features to which most societies aspire. There are systems of technology which can make food production more efficient in terms of human productive input...

As an integral part of the Coalition for Sustainable Egg Supply (CSES) Project, this study simultaneously monitored air emissions of 3 commercially operated egg production systems at the house level and associated manure storage over 2 single-cycle flocks (18 to 78 wk of age). The 3 housing systems were 1) a conventional cage house (CC) with a 200,000-hen capacity (6 hens in a cage at a stockin...

Meeting basic food needs involves using photosynthesis to harvest solar energy over extensive areas. This work-intensive process can consume the majority of human productive capacity leaving only small amounts of this capacity to provide other features to which most societies aspire. There are systems of technology which can make food production more efficient in terms of human productive input...

In this paper, a novel method is proposed and applied to quickly calculate the capacity of energy storage for stand-alone and grid-connected wind energy systems, according to the discrete Fourier transform theory. Based on practical wind resource data and power data, which are derived from the American Wind Energy Technology Center and HOMER software separately, the energy storage capacity of a...

The STAR level-3 trigger is a MYRINET interconnected ALPHA processor farm, performing online tracking of N 53!#, 58000 particles (N 10*/5 445 per track) with a design input rate of R"100 Hz. A large-scale prototype system was tested in 12/99 with laser and cosmic particle events. ( 2000 Published by Elsevier Science B.V. All rights reserved.

To the careless observer and general critic the making of a law is a very easy thing. But to the actual lawmaker who meets the usual difficulties and encounters the practical obstacles it is a very different matter, and it may be of interest to many to follow the course of a bill from beginning to end. In the first place it may be said that the legislature is only the "machine" through which la...

times, but more uncertainty seems to be hallmarks for 2008. Agriculture is experiencing the best times since the 1970s. It’s finally a boom for Indiana farmers and agribusinesses. Farm incomes are up. Equity is way up due to a 17% increase in land values. Farm families on average are on their strongest financial footing in 50 years. These better times are being driven by a worldwide surge in th...

A questionnaire survey was conducted to determine the worm control practices and anthelmintic usage of 150 key respondents involved in sheep and goat production in the arid Thal area of Pakistan. The information was collected by visiting farms, and interviewing the key respondents which included veterinary officers (n = 15), veterinary assistants (n = 51), traditional practitioners (n = 24), an...