Over 2 yr, 45 Angus-sired steer offspring of Angus and Angus crossbred females were used to determine the effects of early weaning on feedlot performance, carcass characteristics, and economic return to the cow-calf enterprise. Steers were assigned by birth date to one of two weaning treatments: 1) weaned at an average age of 100 d (early weaned) or 2) weaned at an average age of 200 d (normall...

most regions of iran are confronted with inadequate supply and excessive demand of water in agriculture sector mainly resulting from a high difference between water providing cost and its price. coping with such a challenge needs to determine the water price based on the economic principles and its value in agricultural production. the aim of this study was to determine the economic value of th...

BACKGROUND It is estimated that major depression disorders constitute 8.2% of years lived with disability (YLDs) globally. The repetitive Transcranial Magnetic Stimulation (rTMS) and Electroconvulsive Therapy (ECT) are two relative common interventions to treat major depressive disorders, especially for treatment resistant depression. In this study the cost- effectiveness and cost-utility of rT...

Background: The quality of life in patients with chronic obstructive pulmonary disease (COPD) is associated with poor pulmonary function, respiratory symptoms, incapacity to perform daily activities, as well as mental and cognitive disorders. Although there exists some evidence regarding the effect of socioeconomic status on the quality of life in the general population and those with chronic d...

INTRODUCTION Screening can prevent colorectal cancer from becoming advanced by early detection of precancerous lesions. Cost-effectiveness analysis of colorectal cancer screening methods is highly necessary due to increased prevalence, decreased age at onset and the limited budget in Iran. METHODS Methods of screening currently available in Iran were selected. A systematic search revealed the...

Abstract We study the effects of time-varying volatility and investment horizon on economic significance stock market return predictability from perspective Bayesian investors. Using a vector autoregression framework with stochastic (SV) in returns predictor variables, we assess broad set twenty-six predictors both in-sample out-of-sample designs. Volatility are critically important for assessi...

General concept and major emphasis on off-pump coronary artery bypass surgery (OPCAB) is maintaining quality of care and patient safety while reducing cost and resource utilization. OPCAB probably avoids the potential complications of cardiopulmonary bypass. However its acceptance depends on clinical and economic outcome. The aim of this study is to compare clinical and economic outcome of off-...

sarcheshmeh copper complex is the largest producer of copper in iran. with copper production, high amounts of so2 are being produced in this complex and emmited into the environment. so, in this study, the social optimum level of so2 released from this complex and the optimal tax rate will be evaluated. for this purpose, md and mac curves were estimated. the wtp for the reduction of so2 emissio...