mix cropping of alfalfa (medicago sativa) and annual ryegrass (lolium rigidum) may improve forage production in the rangeland and field conditions, especially in spring after the establishment year. in this study, the effects of different sowing rates of alfalfa and annual ryegrass seeds in the replacement and additive series of mix cropping were evaluated on forage yield in first year after th...

introduction: quality of services extremely depends on how personnel have contact and interaction with the clients. moreover, the personnel’s attitudes and their behaviors with the clients significantly affect clients’ perception of quality of services and consequently influence their satisfaction as well as their absorption to the services of an institution. this study intends to investigate t...

the strength of concrete is a function of the proportions of the constituent materials, namely, cement, water, fine and coarse aggregates. the conventional methods used to determine the mix proportions that will yield the desired strength, are laborious, time consuming and expensive. in this paper, a mathematical method based on modified regression theory is formulated for the prediction of con...

Environmental problems such as air pollution and greenhouse gas emissions are caused by almost all transport modes. A potential solution to these could be electric mobility. Currently, efforts increase the use of various types vehicles under way virtually worldwide. While in recent years a major focus was put on electrification passenger cars, electricity has already, for more than hundred year...

In recent years, efforts to reduce greenhouse gas emissions have continued worldwide. the construction industry, a large amount of CO2 is generated during production Portland cement, and various studies are being conducted cement enable use substitutes. Ferronickel slag by-product by melting materials such as nickel ore bituminous coal, which used raw produce ferronickel at high temperatures. t...