ZUSAMEN-FASSUNG:  Die oben angefuerte Erlaeuterung und Dis­kussion umfasst (I)- normale Entwicklung ein­zelner Hauptkomponente des menschlichen Immunmechanismus, ( 2) Faktoren, die moegli­cherweise fetalen Immunsystem aktivieren, (3) Faktoren, welche die Entwicklung des Immun­systems stoeren koennen.  REFERENCES 

ausser der traditionellen nutzung der geothermalen energie sind in jungster zeit neue erkenntnisse und projekte in ausarbeitung, die fur die zukunft ausserst wichtig sein konnen. bei einigen dieser projekte hat man bereits einige sehr positive ergebnisse erzielt. ausserdem wurde klar, das die ausgaben fur exploration,und expleitaion wirtscnaftlich ohneweiteres vsrtretbar sind,j•a sogar in hinbl...

This paper presents evaluation and effect of blank radius on radial stresses through mathematical formulations in hydroforming deep drawing process using castor oil medium. Hydraulic pressure can enhance the capabilities of the basic deep drawing process for making cups. In hydroforming deep drawing process, applying the hydraulic pressure on blank periphery in radial direction. It is obtained ...

PURPOSE To analyze the feasibility of combining computer-assisted 3-dimensional planning with patient-specific drill guides and to evaluate this technology's surgical outcomes for distal radius intra-articular malunions. METHODS Six symptomatic patients with intra-articular malunions of the distal radius with a stepoff of more than 2 mm were treated with an outside-in corrective osteotomy. Th...

Rectangular waveguide is one of the earliest types of transmission lines. Rectangular waveguide can be produced by hot extrusion process. In this paper, the hot extrusion process of CuZn5 rectangular waveguide was investigated by Finite Element Method (FEM). In addition, Genetic Algorithm (GA) was used to optimize the die geometry and process conditions to achieve the lowest magnitude of extrus...

In any metal forming process, both the strain rate and deformation rate depend on the die profile. The die profile also, is responsible for the non-uniformity of the deformation along the cross-section. These affect the quality and mechanical properties of the product. Therefore, if a die is designed, in which the affecting variables can be controlled spontaneously it is hoped to obtain a produ...

Several factors must be considered when designing parts that are being made by bending. The primary factor is minimum radius and angle of bending that can be bent successfully without metal cracking. Low carbon steel metal (st37), manufactured by Libyan Iron and steel Company, was used in this study. Various bending processes by Vee die for different radii and calculate thickness were conducted...

The plastic penetration condition and biting-in condition of a radial conical ring rolling process with a closed die structure on the top and bottom of driven roll, simplified as RCRRCDS, were established. The reasonable value range of mandrel feed rate in rolling process was deduced. A coupled thermomechanical 3D FE model of RCRRCDS process was established. The changing laws of equivalent plas...

OBJECTIVES This biomechanical study captured the reamer pathway in human femurs reamed through a greater trochanteric entry portal. The spatial pathway of the reamed intramedullary canal was analyzed to determine how closely a helix can match the dimensions of this canal. METHODS Twenty-one human cadaveric femurs were reamed through a trochanteric entry portal 12 mm lateral to the superior tr...

Let $G=(V(G),E(G))$ be a simple graph with vertex set $V(G)=\{v_{1},v_{2},\cdots, v_{n}\}$ and edge $E(G)$. The $p$-Sombor matrix $\mathcal{S}_{p}(G)$ of $G$ is the square order $n$ whose $(i,j)$-entry equal to $((d_{i})^{p}+(d_{j})^{p})^{\frac{1}{p}}$ if $v_{i}\sim v_{j}$, 0 otherwise, where $d_{i}$ denotes degree $v_{i}$ in $G$. In this paper, we study relationship between index $SO_{p}(G)$ b...