The study entitled (Anthropometric Treatments of the Study Seat Units Used in Elementary stages) highlighted the relations between the sizes of dimensions of the study seats and the different anthropometric sizes of the students. The study problem is manifested in the following question: what are the anthropometric treatments used in the design of the study seats in the elementary stages? The research aims at finding design treatments for the anthropometric variables of the study seats used in the elementary stages, because the study seats have to do with preserving students health and safety through providing an ideal seating mechanism compatible with the anthropometric variables which enhances comfort, safety and focus in the most important educational institution, in which the students spend half of their time, i.e. the school. The descriptive approach has been adopted in the analysis of the samples which represented (3. 33 %) of the research community. The results have shown that the design processes of the formal formations for the study seat units are (100%) incompatible with the anthropometric dimensions in the seat bench body (depth of the seat) in the samples (1-2) which resulted in discomfort and weakness in performance. The lack of backrests in study seat units led to poor functional effectiveness, and they lack safety and security for the students in the three samples with (100%). The study came up with important conclusions that the designer's prior knowledge of the anthropometric measures of the student contributes to activating the performance side( the functional and the formal) in order to achieve the integration feature for the student and the study seat units.
تعد شخصية الوزير علي بن يقطين من الشخصيات التاريخية البارزة بالرغم من كونه
عمله كوزير ف
To work for your world as if you lived forever and work for your hereafter as if you were dying tomorrow, great wisdom and a high-level literary text and a philosophical text with clear features and complex structure.
This text attributed to Imam Ali is the answer to a question that humanity has put in place since its existence and to this day, which is: what is the decent and happy life for a dead person?. Myths and religions with different references and philosophers have answered this question in different ways and vision, including Imam Ali, who answered dualism of reason and faith, through his view of the human being and life and clear features.
The dispersion of supported Pt and Pt–Ir reforming catalysts have been studied, after treatment with oxidative and reducing atmosphere. Methylcyclohexane dehydrogenation reaction in the absence of hydrogen was used as a test reaction. An attempt was made to relate the behavior of the catalysts upon subject to reaction, to the dispersion of the same type of catalysts upon treatment with similar atmosphere and temperatures which appeared in literature. The total conversion of reaction can be explained by a change in metal dispersion. Thus, methylcyclohexane dehydrogenation reaction appears to be a really “structure sensitive” reaction.
The toluene yield increases as the oxidation temperature i
... Show MoreBackground: the aim of this study was to evaluate the effect of different surface acids treatments (37%phospjoric acid, 5%hydrofluoric acid, 1.23 acidulated phosphate fluoride) of feldspathic ceramic VITA 3D MASTER , and the effect of thermocycling on shear bond strength using a ceramic repair kit (ivoclar/vivadent). Material and Methods: sixty Nickel-Chromium metal base plates were prepared(9mm diameter,3mm depth) using lost wax technique, 2mm thick layer of ceramic(VITA 3D MASTER) fused to metal plates, all specimens were embedded in acrylic resin blocks except their examined surfaces and divided into 3 main groups 20 specimens each, Grp A: treatment with 37%phosphoric acid for 2 mins, Grp B: etching with 5% hydrofluoric acid for 2mins,
... Show MoreThe aim of the current research is to analyze the content of the two science books (chemistry units) for the two grades ( first and second intermediate ) according to environmental ethics, as the research community and its sample of the two science books (chemistry units) for the two grades ( first and second intermediate ), approved by the Iraqi Ministry of Education for the academic year ( 2021-2022 ), and the two researchers adopted the descriptive ( analytical ) approach, and the researchers built a standard for environmental ethics, and the validity of the tool was confirmed by presenting it to a group of experts, and then the researchers analyzed the two books in light of the standard prepared based on the implicit explicit idea, and
... Show MoreThis study focuses on improving the safety of embankment dams by considering the effects of vibration due to powerhouse operation on the dam body. The study contains two main parts. In the first part, ANSYS-CFX is used to create the three-dimensional (3D) Finite Volume (FV) model of one vertical Francis turbine unit. The 3D model is run by considering various reservoir conditions and the dimensions of units. The Re-Normalization Group (RNG) k-ε turbulence model is employed, and the physical properties of water and the flow characteristics are defined in the turbine model. In the second phases, a 3D finite element (FE) numerical model for a rock-fill dam is created by using ANSYS®, considering the dam connection with its powerhouse
... Show MoreGiven the importance of basic education (primary) being longer pillar in the construction of the individual's personality, as well as the importance of language and its role in the learning of students and development of cognitive, emotional and self-dynamic; therefore current research focuses on the study of building a standard oral expression can researchers and teachers alike measurement of oral expression among students, researcher has used to achieve this goal descriptive approach, it included standard on (10) paragraphs evenly distributed on the (5) key areas, and given (4) progressive alternatives according to the quality of the performance of the student and reached the highest score (30) and the lowest score (0).
... Show More