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Basing on the old steam-iron process to produce hydrogen-rich fuel gas [4], it achieves the hydrogen storage-release processes by a simple redox reaction as following procedure: Step1: Chemical hydrogen storage (reduction) Fe3O4+4H2→3Fe+4H2O (1) Step2: Hydrogen recovery (oxidization) 3Fe+4H2O→Fe3O4+4H2 (2) Due to the fact that the standard experimental methods, such as low-energy electron diffraction, X-ray photo-electron spectroscopy and Auger electron spectroscopy, are not able to detect the positions of hydrogen atoms, experimental researches on the adsorptions of hydrogen atoms and molecules at Fe3O4 surface are very limited.
CRC handbook of chemistry and physics 1999-2000: a ready-reference book of chemical and physical data, in: D.R.

This phenomenon is explained in terms of the magnetovolume effects, and therefore, it is expected that the reduction of volume for the compounds with high Fe concentration results in enhancement of ∆Sm.
The MCEs data for other candidates Gd5Si2Ge2 [17], MnFe(As0.5P0.5) [18] and MnAs [19] are also shown in the same table, for comparison.

Results 3.1 Tensile Test and Polarization Curve The data results of tensile test and polarization curves are shown in Table 2.
Reduction in cross-section shows that there is almost no shrinkage neck in 702-C and 1030-Q specimens.

Along with these advantages, SCC results in considerable reduction of the acoustic noise levels and the use of secondary raw materials [4].
R1, R2, and R3 are the test data of different barriers or accessibility, respectively.

The increasing demand for frequency band for high-speed application to accommodate quality voice, data and high-definition video have created the problem of spectrum deficiency due to fixed allocation of spectrum from regulatory bodies [11].
The challenges for UWB antenna are miniaturization and complexity reduction.

The experimental measurement has been carried out in the following steps: • data acquisition for the pristine panel
However, it should be noted that due to extensive heating release during activation of the Ni-Ti strip some softening on the beam material has been observed resulting in reduction in the second resonant frequency of the beam.

On the basis of mentioned data, It is proposed that green light emission assigned to transition from donor level due to sulfur vacancies to valence band[22,23].
Ichimura Defect reduction in electrochemically deposited CdS thin film by annealing in O2,Solar energy Solar materials & Solar cells.,50(1998),147-153 [25] E.

The detailed data of these systems are given in references [17, 18].
Sharma, Optimal allocation of distributed generation in distribution system for loss reduction, In Proc.

Organic Formation The adoption of efficient formal guidance and the adoption of formal cohesion (Fig. 5), the principle of using median yards in the formal formations (Fig. 6), the adoption of locally available materials, and the reduction of depth ratios in the formal building [17] in addition to the different architectural formations characterized by the diversity of openings From one floor to another in terms of surface and formation and according to the different function of each space and the gradation in the sizes of spaces and spaces and the diversity of their forms [15].
· .Emphasis on the importance of dealing with environmental data and taking traditional architecture as a starting point for design compatible with the environment to reach a contemporary architecture that belongs to its original environment, an experiment that has proven successful in our Arab environment

Japanese Shinkansen plays an important role in the development of Takaido urban agglomeration , Morikawa Ocean unified the high grade highway planning and planning of city expressway through the analysis of highway traffic census data, studying entrances and exits of highway and city, city problem such as entrances and exits , putting forward the suitable city layout planning of Japan, the urban planning of entrance and exit and development ideas, connecting all kinds of roads, giving full play to the function of the road network[1].
The entrance distance is 1500m on the basis of expected speed, and turns to be 1200m after economic reduction .In relationship between driving speed and distance, expect speed has bigger influence on distance.