Thirty samples were examined to document the nannofossil assemblage and determine the biostratigraphic zonation. Samples were taken from a borehole drilled at Sisseton (NE South Dakota). 92 species of nannofossil were determined and photographed. Biostratigraphic study of calcareous nannofossils allowed recognition of Late Early Campanian to Early Late Campanian age for the studied section.

The concept of a Γ-semihyperring is a generalization of a semiring, semihyperring, Γ-semiring. In this Paper we introduce the notion of bi-interior Γ-hyperideals, quasi-interior Γ-hyperideals and bi-quasi-interior Γ-hyperideals in a Γ-semihyperring as a generalization of Γ-hyperideal, left-Γ-hyperideal, right-Γ-hyperideals, bi Γ-hyperideal, quasi Γ-hyperideal, interior Γ-hyperideals of Γ-semihyperring. We studied the properties of these Γ-hyperideals and characterized them in simple Γ-semihyperring and regular Γ-semihyperring

"interior decoration", "interior design", and "interior architecture" are known as three names that refer to specialties that are focused on the organization of interior spaces. The emergence of these three specialties takes place in a historical process; first "interior decoration" in the early nineteenth century, then "interior design" in the early twentieth century, and then "interior architecture" about four decades ago. The precedence and delay in the emergence and application of these specialties does not mean the complete replacement of the latter over the earlier one; however, in some cases and for some reasons, the former specialty has been replaced by the latter. In fact, these three specialties, despite their many similarities and commonalities, have different meanings and uses and in relation to each other, and they have created a relationship that is questionable and worth considering. So the main question of this research is what is the relationship between the mergence of "interior decoration", "interior design", and "interior architecture".To answer the above question, first, the foundations and origins of each are examined and analyzed. This is because by finding the roots and recognizing the factors and conditions of each period, it is possible to identify the requirements and needs that have affected the emergence of each. These factors and conditions form a system in which they interact and are affected. As a result, their interaction leads to the formation and objectification of each of these specialties. After recognizing the way the three specialties are formed, their function and functional evolution have been studied in both the context of profession and education. In this way, the relationship between these three specialties is explained. Since the subject of this research is to know the origin of these professional areas and how it is formed, the main focus is on beginning to find the subject matter of these specialties that have lasted from the early nineteenth century to the late twentieth century. In the last two decades, these specialties have become more widespread in the profession and education, and so a careful study of this issue requires further opportunities. Therefore, the time period studied in this research is from around 1800 to 2000.So the goal of this study is to understand the relationship between these three titles. The methodology of this research is analytical, interpretive, and logical reasoning. This means that by searching, collecting, and organizing documents, and evaluating and interpreting data, a description of the origin and formation of these three specialties is provided. The findings of this study show how the factors influencing the formation and survival of "interior decoration", "interior design", and "interior architecture" operate and how they relate to each other. Since a relatively short time has passed since the introduction of these specialties, this research can help to understand each of these three areas of expertise more accurately and is effective in clarifying their position in relation to each other. Continuation of this research can help to develop the concepts and theoretical foundations of these specialties.

In this work, we attempt to investigate the connection between various types of ideals (for examples (m; n)-ideal, bi-ideal, interior-ideal, quasi-ideal, prime-ideal and maximal-ideal) of an or-dered semigroup (S;
;  ) and the corresponding, hyperideals of its EL-hyperstructure (S;  ) (if exists). Moreover, we construct the class of EL-􀀀-semihypergroup, associated to a partially-ordered 􀀀-semigroup.

Introduction: This study evaluated the degree of micro leakage of ideal Makoo and Tetric Flow composites using two dentin adhesives of Scotch Bond Multipurpose (SBMP) and Excite.Materials &Methods: 60 premolar teeth were divided in to four groups of 15. and class V cavity preparations were done in CEJ. Group 1 was rest orated with SBMP and ideal Makoo, Group II with SBMP and Tetric Flow, Group III with Excite and ideal Makoo, and Group IV with Excite and Tetric Flow. Stereomicroscope (X40) was used to evaluate and dye penetration in occlusal and gingival margins. Chi Square test, Pearson’s correlation test and Fishers exact test were used for data analysis (α= 0.05).Results: 1- The degree of leakage was not in correspondence to the type of composite.2- The degree of leakage was not in correspondence to the type of dentin adhesive.3- In four groups, the degree of leakage in gingival wall was significantly more than occlusal wall.Conclusion: Type of composite and dentin adhesive have no effect on degree of leakage. The important factor is the type of wall. It means that in class V restorations, gingival wall is always observed to have more micro leakage than occlusal wall.

Future and ideal are something problematic now more than every day before. In this frustrating fog occupying everywhere, all attempts have been assigned to individual needs, personal successes and close future. Collective ideal and far future have become secondary goals. In such conditions “, self”,will cut its ties from social context, will alienated from the society, from history and from itself and will tend to reification. What role university and academic training will play here? The specific question of this article is how each of the two approaches of natural sciences and human sciences will relate in this alienation? Social faculty of Tehran university has been selected as representative of human sciences and engineering faculty of Tehran university as representative of natural sciences. 15 students of each faculty were interviewed about their ideals, wishes and futures. According to the results, linear determinative scientific causal law dominated on natural sciences in engineering faculty will permeate to the world of human relations. In the sphere of these disciplines society is not an independent totality but just sum of the singular individuals. ideal and future have seen as not more than just personal success. In contrast in the fluid and multi-paradigm world of human sciences, relation between individual and society will be understood as complicated, multilateral and dialectical. Personal success and collective ideal will be seen as interwoven,and ideal will not know as just personal success inside the status quo, but the will of the change in the status quo itself.

Hesitant fuzzy sets are very useful for dealing with group decision-making problems when experts have hesitation among several possible memberships for an element in a set. Recently, many researchers have used these concepts in clustering analysis and decision-making. In this article, the notions of hesitant hybrid subsemigroups and hesitant hybrid left(resp., right) ideals in a semigroup are introduced, and several properties are investigated. The concept of hesitant hybrid product is also introduced, and properties of hesitant hybrid subsemigroups and hybrid left (resp., right) ideals are considered using the notion of hesitant hybrid product. Relations between hesitant hybrid intersection and hesitant hybrid product are exhibited. Additionally, we establish hesitant hybrid interior ideals in semigroups and study theirproperties. Furthermore, we prove that in regular and intra-regular semigroups, the hesitant hybrid ideal and the hesitant hybrid interior ideals are coincide.

In this paper, we investigate the connection between various types of $\Gamma$-ideals (for examples $(m, n)$-ideal, bi-ideal, interior ideal, quasi ideal, prime ideal and maximal ideal) of an ordered $\Gamma$-semigroup $(S,\Gamma,\leq)$ and the corresponding hyperideals of its $EL$-$\Gamma$-hyperstructure $(S,\overline\Gamma)$ (if exists).