the successfully breeding of the hybrids 873?874 had settled the problem that the yield was not uniform to the silk quality in silkworm varieties. in this paper, we illuminated the key technology, principle, hints and methods for selection in breeding spring-and-autumn rearing silkworm varieties were analyzed using the procedure of breeding the hybrid of 873?874 as example.

ever changing needs of society to which the health sector has to respond, makes the health sector reform inevitable for any country worldwide. increasing the efficiency and effectiveness of health services, equity, sustainable financing and management improvement are the main objectives of health sector reform. healthcare reform was set high on the new administration’s agenda with the start of ...

introduction: in the current world of business, benefiting from information technology is considered as one of the main factors to develop and improve the performance of organizations. this study was performed to identify access to infrastructures of information technology among the managers and executive experts of health departments in iranian universities of medical sciences. it also tried t...

introduction: the internet has quickly become a major player in the quest for information. researchers readily employ the internet as a tool for information retrieval because it can provide fast access to vast amounts of information from a multitude of sources. the purpose of this study is to investigate the role of the internet in locating information in najaf abad azad university. methods: it...

an investigation of science and technology parks in technology development in different countries show a positive impact on development is technology. factors influencing on the development of technology parks can be considerable help in the creation of parks may be appropriate.the study purpose is identified strategies for improving agricultural technology development in science and technology...

structural and environmental complexity and also competitive challenges make priotrizing of technology development so critical for policy makers, managers and industries planner. although the necessity of this subject has been mentioned in literature, but there is not any specific process for technology planning at industry level. because of  this theoretical gap, researches uses the technology...

The rapid pace of technological change, coupled with a pressing need for solutions to address grand societal challenges and global crises, heightens the challenge policy makers develop science, technology innovation policies at speed, in situations high uncertainty and, some cases, around potentially controversial fields. Technology assessment (TA) has long history providing decision-makers tim...