News are considered the most press arts that supply the target audiences with daily information and events happened inside and outside society since it is formed by depending on its resources which have a deep relation with formal corporations to gain their satisfaction in order to support their authority and spreading their domination by using mass media in editing their viewpoints and achieving wide acceptance among public opinion. In the field of technological development and changing in the fields of politics, society, culture, economics etc. inside Iraqi society and democratic transition help to convert news agenda from independent variation to a fellow variation while in the past the variation of mass media was the independent one that has a great impact on audience agenda. It finds out the following results:
1- Security file agenda occupies the first place from the rest of other files that news content is included in the newspapers samples and obtain a repetition of (48) with percentage amount of (18.18%)
2- The study discovers the limits of variations and plurality of sources and the relation of this plurality in building news agenda. The newspapers under study depend on formal resources from which they get information by 336 repetitions with a percentage amount of 72.73%.
The study ends with the following conclusions:
1- There is a cooperative interest in building news agenda mechanisms in the Iraqi newspapers under study. All of them agree on agenda of services and security issues and differ in building their news agenda for economic, political, social, religious, and administrative corruption.
2- They adopted formal sources in bias for building news agenda and this is in turn reflected in news-editorial sources in the newspapers under study.
Free vibration behavior was developed under the ratio of critical buckling temperature of laminated composite thin plates with the general elastic boundary condition. The equations of motion were found based on classical laminated plate theory (CLPT) while the solution functions consists of trigonometric function and a continuous function that is added to guarantee the sufficient smoother of the so-named remaining displacement function at the boundaries, in this research, a modified Fourier series were used, a generalized procedure solution was developed using Ritz method combined with the imaginary spring technique. The influences of many design parameters such as angles of layers, aspect ratio, thickness ratio, and ratio of initial in-
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Materials and methods: For this experimental study, 45 male rabbits, separated in two groups, control non- irrigated group (5rabbits) and study group (40 rabbits), gingivitis induced by ligatures was packed subgingivally in the lower right central incisors of the experimental group for seven days. Then, the animals were randomly designated to two irrigated groups (20 rabbits
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