Charles E. Martin

John W. Ropes

A survey was made during the summer of 1958 to assess the abundance of hard clams, Venus (Mercenaria) mercenaria, in Nantucket Sound, Massachusetts. A jet (hydraulic) dredge was used as the principal sampling gear. Data from 214 sample stations compared with other Atlantic coast areas indicated that the abundance of hard clams in Nantucket Sound was extremely low. The survey revealed no new general areas of commercial abundance. No clams less than 60 millimeters (2 3/8 inches) were caught. Because of hydrographic conditions unfavorable for spawning and setting and because there are few small clams to augment the present stocks, the future of this fishery is uncertain.

The Abundance and Distribution of Hard Clams in Nantucket Sound, Massachusetts, 1958

Feng Zhang

James DiNunzio

Isaac Ghebre-Sellassie

The first edition of Pharmaceutical Extrusion Technology, published in 2003, was deemed the seminal book on pharmaceutical extrusion. Now it is expanded and improved, just like the usage of extrusion has expanded, improved and evolved into an accepted manufacturing technology to continuously mix active pharmaceutical ingredients with excipients for a myriad of traditional and novel dosage forms. Pharmaceutical Extrusion Technology, Second Edition reflects how this has spawned numerous research activities, in addition to hardware and process advancements. It offers new authors, expanded chapters and contains all the extrusion related technical information necessary for the development, manufacturing, and marketing of pharmaceutical dosage forms. Key Features: Reviews how extrusion has become an accepted technology to continuously mix active pharmaceutical ingredients with excipients Focuses on equipment and process technology Explains various extrusion system configurations as a manufacturing methodology for a variety of dosage forms Presents new opportunities available only via extrusion and future trends Includes contributions of experts from the process and equipment fields

Pharmaceutical Extrusion Technology

Staying behind on an island after three summer people have left, Heather wonders what there will be to do.

Charles E. Martin

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