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If the Dublin Core is to be applied in some useful way to the domain of images , it will be necessary to isolate the essential core of information appropriate to a simple description record and to identify a graceful extension mechanism that supports encoding of the richer array of descriptors hinted at in the preceding paragraphs . Casting is necessary . The inner walls of the Atlantis Transform , which represent the crust generated at the inner corners of the RTIs , have been extensively dredged , and the results show that peridotite ( 43 % ) and gabbro ( 24 % ) dominate the recovery ( Dick et al ., 1991a , 1991c ) . IDL ( http://www.rsinc.com/ ) is now on its fifth release and is extensively used by the satellite community all over the world . Depending upon the size , location , and spread of the cancer , the treatment team may determine that reconstructive surgery is necessary . Resistance to drugs discontinued > 2-6 weeks before testing may not be expressed in the resistance testing , although this probably differs by individual patient and specific agent and has not been extensively studied . According to the Union , Proposal 2 " is necessary to insure that bargaining unit members not be forced to participate in a procedure that has not been agreed upon between [ the Union ] and the [ A ] gency . Should an additional mid-year meeting be necessary , the committee will need to request GB approval . Taxes on energy and carbon emissions have been extensively discussed . A two-thirds majority of members voting at that meeting shall be necessary to reverse the decision . To use this criterion , it is necessary to demonstrate that the forestry staff or tree board was instrumental in the project . The revised guidelines will indicate that an approximately 20 % increase in site size will be necessary to accommodate the additional facilities needed for the increased number of teachers . Ultrasound scanning of yearling seedstock for carcass merit ( and use of this data to generate EPDs ) has been extensively researched and determined to be an effective means to alleviate some of the shortcomings of carcass progeny testing . The mechanism by which venous hypertension causes the cutaneous inflammation of stasis dermatitis has been extensively studied for decades . The second is , according to the reasoning on page 68 , equal to that which would be necessary to increase one degree the temperature of one kilogram of air subjected to atmospheric pressure . These composites are being extensively studied for use as catalysts for gas-phase reactions .