a long-term rotation experiment was established in 2001 to compare conservation or reduced tillage systems (shallow rototiller and chisel tillage) with conventional tillage system using mouldboard plough in a semi-arid region with mediterranean climate. field experiments were conducted to determine weed density and profitability of cropping systems in a crop rotation of winter wheat (triticum a...

rice is one of the most important staple cereals‏ ‏in iran and has a main role in providing ‎the food ‎security. harvesting by hand postpone the rice harvesting stage, and facing late season ‎rainfall, and increase of yield losses during harvesting. to determine the most suitable ‎harvesting method in gilan, three different harvesting methods (by hand, harvester and ‎combine) were considered as...

The economics of small group insurance makes offering health benefits to employees a risky business. Surveys of employers from 1989 to 2003 reveal that more rapid premium increases are forcing small firms to impose higher cost-sharing. In 2003, premiums for small firms (3-199 workers) increased 15.5 percent, outpacing the 13.2 percent increase for large firms (200+ workers). From 2000 to 2003, ...

Stock return is usually considered to be affected by firm’s financial ratios as well as economic variables. Fundamental method assume that stock returns is not solely related to the stock market. Most result come from the company condition , industry situation and whole economy. In this paper, this relationship between stock return and fundamentals is studied using the data for 22 pharmaceutica...

The Nation's spending for health in fiscal year 1976 reached $139.3 billion, or $638 per person, according to preliminary figures. This total was 14 percent higher than the $122.2 billion spent for health in 1975. In the 2 years since price controls on the health industry were lifted, expenditures have risen $33.0 billion (31 percent). During this period, the economy has grown at a relatively s...