Geomagnetic field is the basic physics field of the Earth, which can't be destroyed or changed in the foreseeable
future. Geomagnetic field don't require special service, therefore, it can be considered as a solid source of navigation
information. The key technologies of geomagnetic navigation are still looking for high accuracy mapping and high
accuracy geomagnetic field measurement on board aircraft, The article analyses some kinds of geomagnetic models.
according to the character of the geomagnetic models, The NGDC-720 model is used as reference map preparation. The
model with Kriging method give birth to the reference maps which include geomagnetic seven vectors' map (X, Y, Z, F, D, I, H). Using the reference maps, The geomagnetic vectors'statistical characters have been analyzed. According to the
statistical characters, some changeable obviously statistical characters can be used as matching characteristic values.
In this research, a near-IR fluorescent labeled nucleic acid conjugate for the nucleic acid detection was synthesized, and characterized preliminarily for the detection of the nucleic acid. Th conjugate combines the molecular recognition properties of the oligonucleotides with the near-IR fluorescence label PR646. Both single- and dual- labeled conjugates were studied for their hybridization with the complementary nucleic acid. The dual labeled conjugate has indicated that the self-quenching effect exists in ssDNA form while the fluorescence increases greatly after hybridization with the complementary nucleic acids. The time-resolved fluorescence was also studied.
In this paper, nano technology, nano sensor, nano devices, bionics of nano technology are discussed. The significance of the topic includes its contribution to biology and medicine as well as to engineering and technology. Cell may be the best object to be researched. Cell membrane may be the key of such a study. By means of simulating the structure and function of a cell's membrane, a molecular network model of nanofactory are suggested. Methodologies for realizing such models are presented. Among them, nano fabrication biotechnology, chemical method and nano integration are illustrated. Nano fabrication in a broad sense will be preferable to others. At last, a diagram showing the perspectives of the new technologies including measuring and control of psychological state, establishing platform for monitoring a single cell, constructing nano robot and nanofactory etc. was depicted.