criticism of public extension services has resulted in various countries seeking alternative approaches for provision of these services. in all these approaches, extension personnel are the key factors to the success of the implementation. today, agricultural extension services in turkey bear the responsibility of the ministry of food, agriculture and livestock. a number of non-public extension...

Computed tomography is the method of choice for initial evaluation of pa tints with potential suprasellar masses. In our ex­perience during the last 2 years C.T. has proved reliable for detecting or rulling out the presence of a suprasellar mass.  It shows the direction and degree of parasellar extension and the presence of any calcific or cystic component of the le­sion. When C.T. was negat...

We have compared the DNA sequences of several different examples of the duplicated polymerase I promoters that are found in rDNA spacers of Xenopus laevis. Although different spacers exhibit different amounts of transcription in vivo, this does not seem to be due to DNA sequence differences between spacer promoters. We have found that several different spacer promoters when subcloned and inject...

The noncanonical wnt/planar cell polarity (PCP) pathway [1] regulates the mediolaterally (planarly) polarized cell protrusive activity and intercalation that drives the convergent extension movements of vertebrate gastrulation [2], yet the underlying mechanism is unknown. We report that perturbing expression of Xenopus PCP genes, Strabismus (Xstbm), Frizzled (Xfz7), and Prickle (Xpk), disrupts ...

Model reuse can be limited by software design, which often forces third parties to completely rewrite new versions of existing models before adapting them to new needs. This tendency removes resources from the development and improvement of models, and from the extension of their domain, leading to the proliferation of software having many different implementations of the same algorithms. A com...

Independent innovation is the core of the national development strategy. After twenty years, Extenics made great progress in innovation theory, formal method and real application. Developing and manufacturing innovation software to help people develop intelligence, inspire creation is key for Extenics further developing. Now software model cannot meet the requirements of flexible alternate in i...

After twenty years, Extenics made great progress in innovation theory, formal method and real application. Through the formalized research for its logical cell basic-element, the information-knowledge-strategy formalized system, extension analysis methods, extension transformation methods and superiority evaluation methods are set up. We introduce Extenics theory to describe, analyze and evalua...