any other stated or intervening value in that stated range is encompassed within the invention also it is contemplated that any optional feature of the inventive variations described may be set forth and claimed independently or in combination with any one or more of the features described herein stated otherwise it is to be understood that each of the improvements described herein independently offer a valuable contribution to the state of the art so too do the various other possible combinations of the improvements features described herein and or incorporated by reference any of which may be claimed reference to a singular item includes the possibility that there are plural of the same items present more specifically as used herein and in the appended claims the singular forms u201c a u201d u201c an u201d u201c said u201d and u201c the u201d include plural referents unless specifically stated otherwise in other words use of the articles allow for u201c at least one u201d of the subject item in the description above as well as the claims below it is further noted that the claims may be drafted to exclude any optional element as such this statement is intended to serve as antecedent basis for use of such exclusive terminology as u201c solely u201d u201c only u201d and the like.