The production of available potash from the natural silicites

In this paper a summary is given of the various processes which have been proposed for making the potash in the natural silicates available as a fertilizer.Experimental trials of a new rotary kiln process for treating feldspar are described, which depends upon a previous treatment before furnacing, consisting of a method of aggregating or clumping the mix so that chemical contact of the reacting substances is brought about during the subsequent processing. The qualitative and quantitative results obtained on a number of experimental trials on a mill scale of operation are presented and discussed. It is shown that it is possible to economically manufacture a potash fertilizer containing free lime from feldspar, and for a sufficiently low cost to make an industry based upon the method worthy of consideration.     

Defining'science-based targets'

The 2015 Paris Agreement to keep global warming well below 2℃above pre-industrial levels and aim towards limiting warming to 1.5℃marked a wa-tershed in planetar...     

Collaboration between Library,Faculty, and Instructional Design to Increase All Open Educational Resources for Curriculum Development and Delivery

ABSTRACT

Students at universities spend an average of $1,250 yearly on textbooks and course materials. Can a collaboration between the Library and the Instructional Design Department create value for student populations by incorporating OER into the course development process? This is a case study of one University with a large online and distributed network with controls over the course design, timeline and curriculum delivered by the faculty. This University’s team tested whether the entire course could be designed in a scalable format using OERs collaborating with a librarian to organize the resources so students will have ready access to OER every time the course is offered. The result was an internal recommendation on structuring collaboration with the Library and course developers and presentation of the selected OERs in the Learning Management System. The result explored how adopting OERs redesigned course assignments and assessments in courses and fostered the development of original OERs in discipline-specific topics and content. The impact was a greater use of library resources by faculty and students and an economic impact to the student who does not have to purchase costly course materials. This process also supported course authentic assessment creation that are not dependent upon paid resources.