Effects of Alcohol and Liquid Paraffin on Development of Early Mouse Embryos in vitro

In culturing early mouse embryos in vitro,liquid paraffin and alcohol exert deleterious influence on the development of embryos. Some of light liquid paraffin produced by Chinese factories have proved harmful for early mouse embryos. As shown by our experiments, the nitronaphthalene contained and the specific gravity of liquid paraffin were not involved in the injurious effects.However,alcohol mingled in medium had harmful effects on the development of embryos. At the 0.1% concentration of alcohol in medium the proportion of embryos developing to blastocysts decreased to 73.9%. When the concentration of alcohol was increased to 0.8%, all embryos ceased developing. In our experiments, CO_2 which contained 0.13% alcohol had no visible effects on the development of embrvos in vitro.

Propagation Techniques of Ewes at Early Age

The integration of hormone induction of young ewes,live oocyte collection,in-vitro fertilization and embryo transfer( JIVET),as a major breakthrough in livestock breeding technology,not only solves the problem of low oocytes obtained from adult ewes by hormone induction in production practice,but also significantly improves production efficiency. This technology can reduce the generation interval of cattle and sheep and speed up the acquisition of genes in genetic breeding. The application of this technology can help accelerate the cultivation process,shorten the generation interval,promote the industrialization and improve the economic benefits of beef cattle breed. This paper provides a reference for the research and application of new breeding and propagation techniques of beef cattle.

The Origination and Formation of Chinese Civilization

The Chinese civilization is a highly developed,long-standing and comprehensive entity,materially,spiritually and institutionally created by the Chinese nation.Around 6000 BC,Early China in the cultural sense bears its root,marking the first stage of the origin of Chinese civilization.Around 4000 BC,Early China in the cultural sense formally takes shape,marking the second stage of the origin of Chinese civilization.Around 3100 BC,with the emergence of Chinese civilization,the stage of the Archaic State begins.Around 2100 BC,Early China enters the stage of the Dynastic State.Chinese civilization,with its universalistic cosmology and united structure,is of a unique"Tianxia(all under heaven)civilization"pattern.The"Tianxia civilization"patern,together with other cultural genes such as ritualism,ancestral worship,sincerity,benevolence,and coexistence of all in harmony,is the root cause for the continuous development of Chinese civilization to date.

What Semiotics Is

Charles Peirce compares the action of signs to what our experience of blue would have been had we been born wearing blue-tinted glasses: it is an influence on our experience that runs so deep we do not even become aware of its influence until some circumstance or other forces us to realize its action in shaping our identity and lives. For human animals, it was our becoming aware of the difference between the world as it appears to be in everyday experience and the world as it appears through telescopes and microscopes that, "slow-by-slow", forced intellectuals of modern times to recognize the need for recognizing a point of view that transcended the difference between the critical control of objectification reliant mainly upon "common experience" and the extension of that control to include the "special experiences" made possible by experimentation reliant upon instruments with results mathematically integrated. That realization marked the dawn of the postmodern era of intellectual culture, the era where it comes to be understood that the action of signs(semiosis) provides the framework for the whole of human knowledge, from its animal origins in sensation to its farthest reaches beyond the material world in the contemplation of spiritual dimensions within the physical order of being as independent of awareness by finite mind.