In this perspective, an ab initio force field refers to one that is derived from quantum mechanical first principles and does not contain any empirically fitted parameters. She is a full-time government and public safety reporter for Gannett. One way of expressing the electronic energy is by deriving the functional forms from quantum mechanics-based first principles. Endicia: Simple Shipping Solutions for Small BusinessĪshley Mott has 12 years of small business management experience and a BSBA in accounting from Columbia. : Priority Mail Padded Flat Rate Envelope.If you're not using a shipping company or online service which has online tools, make a spreadsheet featuring the item name, inventory number, envelope weight, item weight and preferred shipping options. As you sell the first of each unique item, save the shipping settings. When your business deals in repeat sales of certain merchandise, many shipping programs allow you to preset mailing options to streamline postage printing. Larger or thicker mail pieces, such as softcover books, ship as first class parcels, while heavier items move up to parcel post, also known as retail ground, or Priority Mail class. A flat must also meet minimum size requirements of 6 1/8 inches long by 11 1/2 inches wide. An envelope up to 12 inches tall by 15 inches wide and three-quarter inches thick can ship as a first class mail "flat" if it weighs 13 ounces or less. As you prepare shipments, the weight, size and thickness determines the type of postage you need to buy. Bubble mailers accommodate a range of merchandise.
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