The paper presents introduction to the research on possible supplying ship diesel engines with mixtures of diesel oils and vegetable oils or their esters with accounting for ecological aspects – exhaust gas purity. Characteristics of vegetable oils and their esters are compared with those diesel oils. Consequences of their application to diesel engines, mainly for their working process and exha...

BACKGROUND Narrow maxilla is a common problem in orthodontics and dentofacial orthopedics. To solve this problem, a procedure called rapid maxillary expansion (RME) has been used. However, relapse tendency is a major problem of RME. Although relapse tendency is not clearly understood, various treatment procedures and new applications have been investigated. The present study aimed to investigat...

in order to study the effects of a superabsorbent polymer on yield and yield components of dry land wheat cultivars, a field experiment was carried out in factorial arrangement using randomized complete block design with four replications on research field in khomein city, during 2010-2011 cropping season. the experimental factors included three dry land cultivars called azar2, sardari, rasad a...

It is well known among researchers and practitioners that election polls su↵er from a variety of sampling and non-sampling errors, often collectively referred to as total survey error. Reported margins of error typically only capture sampling variability, and in particular, generally ignore non-sampling errors in defining the target population (e.g., errors due to uncertainty in who will vote)....

A lot of controversy exists around the choice most appropriate error measure for assessing performance forecasting methods. While statisticians argue use measures with good statistical properties, practitioners prefer that are easy to communicate and understand. Moreover, researchers loss-function parameterizing a model should be aligned how post-performance measurement is made. In this paper w...

OBJECTIVES This study examined the effects of palate depth, modifications of the arm shape, and anchor screw placement in the mid-palatal area on rapid maxillary expansion (RME) using finite element (FE) analysis. MATERIALS AND METHODS Three-dimensional FE models were constructed that included the maxilla (cortical and cancellous bone), maxillary sinus, maxillary first molar and first premola...

OBJECTIVE To compare the effectiveness of the rapid maxillary expander and facemask (RME/ FM) and mandibular cervical headgear (MCH) protocols when followed by fixed appliances and evaluated at a postpubertal observation in patients with dentoskeletal Class III malocclusion. MATERIALS AND METHODS The sample treated with the RME/FM followed by fixed appliances included 32 patients (12 boys and...

ObJECTivE: To evaluate and compare the effectiveness of rapid maxillary expansion (RME) and slow maxillary expansion (SME). MaTERiaLS aND METHODS: PubMed, Embase, Web of Science, CENTRaL, ProQuest Dissertations & Theses, ClinicalTrial.gov, and SiGLE were searched from January 1980 to October 2012 for randomized or nonrandomized controlled trials. The processes of study search, selection, and qu...

OBJECTIVE To determine potential differences in treatment efficiencies of face mask therapy without rapid maxillary expansion (RME) at different early dental stages. MATERIALS AND METHODS Forty-nine Class III children who were treated with a face mask without RME were divided into two groups according to their pretreatment dental stage. The primary dentition treatment group consisted of 26 su...

SUMMARY The success of any project can be affected by requirements changes. Requirements elicitation is a series of activities of adding, deleting, and modifying requirements. We refer to the completion of requirements elicitation of a software component as requirements matura-tion. When the requirements of each component have reached the 100% maturation point, no requirement will come to the c...