Surface Trials of the Hydrominer
نویسنده
چکیده
A longwall water jet mining machine called the Hydrominer has been developed at the University of Missouri-Rolla under a Bureau of Mines contract. The first design, referred to as Hydrominer One, has been extensively tested in an open pit mine and has clearly demonstrated that the working principle is viable. The second and greatly improved version, Hydrominer Two, has been built but has not as yet been tested extensively. This paper describes the test series and some of the changes which were required to better achieve the full productive potential of the Hydrominer concept.
منابع مشابه
An Experimental Study on Geogrid with Geotextile Effects Aimed to Improve Clayey Soil
The increase of shear strength in soil, reinforced with the geogrid (alternate reinforcer), is resulted from an increase of modulus of soil hardness, and also from the tensile strength of reinnforcer. The shear strength of contact surface in soil appears due to both the friction strength against the contact surface, and the passive strength formed in front of the elements of the geogri...
متن کاملCharacteristics of Clinical Trials in Iran: A Sample of 5000 Trials Registered in IRCT
Background and Objectives: A considerable number of clinical trials are conducted in Iran each year. Not much is known about the characteristics of them, this study aimed to investigate key characteristics of Iranian clinical trials. Methods: All clinical trial protocols registered in IRCT until November 2013 were selected. Text mining techniques were used to extract information from data t...
متن کاملAn Introduction to the Field Trials Methodology
The knowledge related to the methodology of the field trial study as a type of intervention studies, yet for many of our researchers is not fully understood. The aim of the current study was a better understanding of conducting this type of research. Field trial studies are done on healthy individuals and aim to prevent. These types of studies such as clinical trials are performed on both i...
متن کاملEffect of Sambucus Ebulus Gel 5% on Severity and Surface Area of Uremic Pruritus in Hemodialysis Patients
Background and purpose: Sambucus Ebulus plant is known for its anti-inflammatory and wound healing properties. This study aimed to determine the effect of Sambucus Ebulus Gel 5% on the severity and surface area of pruritus in hemodialysis patients. Materials and methods: A single-blind randomized clinical trial was performed in 150 hemodialysis patients in three groups. We used Detailed Pruri...
متن کاملدرماتولوژی مبتنی بر شواهد: گزارش درست مقایسهی پیامدها در کارآزماییهای بالینی
According to evidence-based medicine, randomized controlled clinical trials are a group of research designs which provides the highest level of clinical evidence, particularly regarding therapeutic or preventive interventions. Considering the dramatic increase in the number of published clinical trials in medical journals, the readership need to have knowledge about the problems that may occur ...
متن کامل