  This paper has been removed by arXiv administrators because it plagiarizes
gr-qc/0010068.
  This paper has excessive overlap with the following papers also written by
the authors or their collaborators: gr-qc/0607109, gr-qc/0607126,
gr-qc/0607103, gr-qc/0607115, gr-qc/0607119, gr-qc/0608024, gr-qc/0601133,
gr-qc/0603044, gr-qc/0607089, gr-qc/0505078, and others.
