Background Quantitative assessment of postnatal rat root dentin thickness is used in developmental, regenerative, and preclinical dental research, yet reported histomorphometric methods remain heterogeneous. The differences in tissue processing, section orientation, image acquisition, calibration, anatomical landmark selection, sampling, and statistical analysis may limit reproducibility and comparability across studies. Objective This narrative methodological review synthesized published approaches to the measurement of postnatal rat root dentin thickness and identified methodological and reporting considerations relevant to digital histomorphometry. Methods PubMed/MEDLINE, Scopus, and Web of Science were searched, and evidence was examine

The present work is a pre-step toward large scale research. It aims at achieving two objectives: First, developing a cognitive diagram that covers the semantic range of the preposition at; second, examining EFL learners' semantic range on the preposition at within three broad categories: sentences, expressions and phrasal verbs. Accordingly, the researchers designed a test that covers the overall usages of the preposition at. Such a test helps examining the different cognitive domains of at and analyzing qualitatively and quantitatively the subjects' answers. The model that is used in the analysis of the first objective is Domain Highlighting by William Croft (1993). The main conclusions arrived at are: First, the cognitive theories

Creative cognitive is a new research field that examines the cognitive process involved in constructing novel representations. It is further concerned with studying the role of such process in generating new ideas, concepts and representations (Finke et al., 1992; Smith et al., 1995; Ward et al., 1997; cited in Vega-Moreno, Rosa E., 2007, 6).  Hilligoss and Howard (2002, 3-5) state that one involves knowing how to read and what to read as readers as usually selective. On the other hand, Cohn et. al (2012) maintain that visual images represent a universal means of communication, reflecting as a result the cultural symbolisms that might be interpreted. They further state that visual language is the quickest and succinct means of comm

The present article publishes a remarkable school text housed in the Iraq Museum, likely originating from Sargonic Adab. The text, conical in shape, contains a list of fields, each measuring 1 iku, associated with a compilation of ad hoc personal names and unexpected terms. This study discusses the text’s content, origin, date, paleography, and its unusual names or expressions. The unique text edited here is kept in the Iraq Museum under the registration number IM 221570.1 It be- longs to a large collection of confiscated documents, most of which originate from the Umma and Adab regions. The document, shaped like a cone or a barrel, measures 8 cm in diameter at its base and 17.5 cm in height, consists of fourteen columns and has suffered

This study aimed to identify the role of servant leadership in promoting organizational citizenship behaviors in a sample of faculties of the University of Alqadisiya .It tried to answer several questions represented its problem.

 The most important questions are the followings:

1- Is there enough perception among administrative leaders in the aforementioned faculties toward the concept of servant leadership? And under what level?                                    &

The Backstepping Sliding Mode Control is a control technique used for controlling nonlinear systems. In this paper, the performance of the backstepping sliding mode controller schemes for the angular velocity control for a rotary actuator of an angular velocity control system that utilizes a novel hydraulic flow control method called inlet throttling was investigated. For the angular velocity dynamic, a linear state feedback with suitable high gain is designed as the virtual controller, where steady state error can be made arbitrarily small according to the gain value. A time varying sliding variable is then selected based on the designed virtual controller. The resulting control design is robust, and the maximum error of the angular veloci

The current research aims to recognize the exploratory and confirmatory factorial structure of the test-wiseness scale on a sample of Hama University students, using the descriptive method. Thus, the sample consists of (472) male and female students from the faculties of the University of Hama. Besides, Abu Hashem’s 50 item test-wiseness scale (2008) has been used. The validity and reliability of the items of the scale have also been verified, and six items have been deleted accordingly. The results of the exploratory factor analysis of the first degree have shown the presence of the following five acceptable factors: (exam preparation, test time management, question paper handling, answer sheet handling, and revision).  Moreover,

The permeability estimates for the uncored wells and a porosity function adopting a modified flow zone index-permeability crossplot are given in this work. The issues with implementing that approach were mostly crossplots, due to the influence of geological heterogeneity, did not show a clear connection (scatter data). Carbonate reservoir flow units may now be identified and characterized using a new approach, which has been formally confirmed. Due to the comparable distribution and flow of clastic and carbonate rock fluids, this zoning method is most effective for reservoirs with significant primary and secondary porosity. The equations and correlations here are more generalizable since they connect these variables by combining cor

In a hybrid cooling solar thermal systems , a solar collector is used to convert solar energy into heat energy in order to super heat the refrigerant leaving the compressor, and this process helps in the transformation of refrigerant state from gaseous state to the liquid state in upper two-thirds of the condenser instead of the lower two-thirds such as in the traditional air-conditioning systems and this will reduce the energy needed to run the process of cooling .In this research two systems with a capacity of 2 tons each were used, a hybrid air-conditioning system with an evacuated tubes solar collector and a traditional air-conditioning system . The refrigerant of each type was R22.The comparison was in the amou