Khorjini CONNECTIONS as the common CONNECTIONS in Iran have not a desirable_behavior against earthquake loads. Consequently, several researches have been conducted during two recent decades in Iran, to evaluate the behavior of these CONNECTIONS and expand their performance. This paper, introduces a new proposed detail as "Khorjini CONNECTIONS with Peripheral Angles". In the current research, numerical analysis has been conducted using Ansys 8.0 Finite Element Code. Three kinds of these CONNECTIONS have been studied with non-linear behavior material as well as non-linear geometry, under cyclic loads. According to the results, these CONNECTIONS have a desirable behavior and adequate ductility.

Recently we introduced a general class of Finsler CONNECTIONS which lead to a smart representation of connection theory in Finsler geometry and yielded a classification of Finsler CONNECTIONS into the three classes. Here, the properties of one of these classes, namely the Berwald-type connection which contains Berwald and Chern (Rund) CONNECTIONS as special cases are studied. It is proved, among other results, that the hv-curvature of these CONNECTIONS vanishes if and only if the Finsler space is a Berwald one. Some applications of this connection is discussed.

We discuss the invariant properties of curvatures effected by the Matsumoto’s C or L-process. We find equivalent conditions on curvatures by comparing the difference between the corresponding curvatures of closely related CONNECTIONS. As an application, Matsumoto’s L-process on Randers manifold is studied. Shen’s connection can not be obtained by using Matsumoto’s processes from other CONNECTIONS. This leads us to two new processes which we call Shen’s C and L-processes. We study the invariant properties of curvatures under Shen’s processes.

In this paper the most important character of saddlebag type connection which is the moment - rotation relation has been driven based on the dimensions of its constitutive angles. An analytical model with three parameters has been chosen to present the moment - rotation relationship. The two first parameters are respectively the initial stiffness and ultimate moment capacity of the connection, the third one (shape parameter) has been determined by the least square method. Finally considering the test results and mathematical equations a practical method is proposed to determine the rigidity of all saddlebag type connection.

Skewed beams may be utilized due to the architectural limitations. The use of skewed beam cause to initiation of torsional moment, in addition to flexural moment, at the connection face. In the beams with end plate CONNECTIONS, the torsional moment creates shear stress at the end plates which in combine with the shear stress due to connection shear force can lead to reduction in the connection frictional strength and the end plates slippage. This paper investigates the slippage of the end plates of skewed beam with rigid connection to columns with end-plates. 122 finite element non-linear models are used to study the end plate moment CONNECTIONS with skewed beams with 10, 20, 30 and 45 degree of deviation in the plan. The results showed that for the beams with low degree of deviation, the addition of one or two rows of bolts is a suitable method for reducing the loss of strength for skewed beams. For high deviation angle of 45 degree the friction strength loss is considerable and so large number of bolts may be required to be added to recover the friction strength loss, which may not be possible due to the geometric limitations of the connection and so it is recommended in the beams with 45 deviation angle other types of CONNECTIONS to be used.

Researches in the field of biomaterials especially those with pharmaceutical applications, named pharmaceutical biomaterials, have witnessed tremendous progress in the last decade. Meanwhile, nanotechnology provides opportunities to do research systematically at nanometer scale.