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Crystal oscillators have been in use now for well over SO years-one of the first was built by W. G. Cady in 1921. Today, millions of them are made every year, covering a range of frequencies from a few Kilohertz to several hundred Mega hertz and a range of stabilities from a fraction of one percent to a few parts in ten to the thirteenth, with most of them, by far, still in the range of several tens of parts per million.Their major application has long been the stabilization of fre quencies in transmitters and receivers, and indeed, the utilization of the frequency spectrum would be in utter chaos, and the communication systems as we know them today unthinkable,'without crystal oscillators. With the need to accommodate ever increasing numbers of users in a limited spectrum space, this traditional application will continue to grow for the fore seeable future, and ever tighter tolerances will have to be met by an ever larger percentage of these devices.
Anna Elizabeth Draeger’s book Crystal Play is a treat for beaders who are captivated by the versatility of crystals in jewelry. Stitchers will explore even more combinations of crystals, new crystal shapes, seed beads, and even some new bead shapes like Tila and peanut beads. Anna showcases these crystals using techniques that include plenty of favorite stitches such as peyote, St. Petersburg chain, herringbone, and right-angle weave. But Anna also includes a few surprise alternatives, like crossweave, fringe technique, and easy wireworking. The projects include many bracelets (which readers love as they are quick and satisfying), a few necklaces, and many bonus design variations (earrings, rings, pendants). Anna’s playful, imaginative look is what truly sets this book apart!
Can this undercover agent save the woman he loves—or is her heart as counterfeit as the money he's been sent to track down? After all that Grandfather has sacrificed to raise her, Theresa Plane owes it to him to save the family name—and that means clearing their debt with creditors before she marries Edward Greystone. But when one of the creditors' threats leads her to stumble across a midnight meeting, she discovers that the money he owes isn't all Grandfather was hiding. And the secrets he kept have now trapped Theresa in a life-threatening fight for her home—and the truth. After months of undercover work, Secret Service operative Broderick Cosgrove is finally about to uncover the identity of the leader of a notorious counterfeiting ring. That moment of triumph turns to horror, however, when he finds undeniable proof that his former fiance is connected. Can he really believe the woman he loved is a willing participant? Protecting Theresa and proving her innocence may destroy his career—but that's better than failing her twice in one lifetime. They must form a partnership, tentative though it is. But there's no question they're both still keeping secrets—and that lack of trust, along with the dangerous criminals out for their blood, threatens their hearts, their faith, and their very survival. Combining rich history, danger, suspense, and romance, Crystal Caudill's debut novel launches this new historical series with a bang. Fans of Elizabeth Camden, Michelle Griep, and Joanna Davidson Politano will be thrilled to find another author to follow!
In this volume, contributions covering the theoretical and practical aspects of multicomponent crystals provide a timely and contemporary overview of the state-of-the art of this vital aspect of crystal engineering/materials science. With a solid foundation in fundamentals, multi-component crystals can be formed, for example, to enhance pharmaceutical properties of drugs, for the specific control of optical responses to external stimuli and to assemble molecules to allow chemical reactions that are generally intractable following conventional methods. Contents Pharmaceutical co-crystals: crystal engineering and applications Pharmaceutical multi-component crystals: improving the efficacy of anti-tuberculous agents Qualitative and quantitative crystal engineering of multi-functional co-crystals Control of photochromism in N-salicylideneaniline by crystal engineering Quinoline derivatives for multi-component crystals: principles and applications N-oxides in multi-component crystals and in bottom-up synthesis and applications Multi-component crystals and non-ambient conditions Co-crystals for solid-state reactivity and thermal expansion Solution co-crystallisation and its applications The salt-co-crystal continuum in halogen-bonded systems Large horizontal displacements of benzene-benzene stacking interactions in co-crystals Simultaneous halogen and hydrogen bonding to carbonyl and thiocarbonylfunctionality Crystal chemistry of the isomeric N,N’-bis(pyridin-n-ylmethyl)-ethanediamides, n = 2, 3 or 4 Solute・solvent interactions mediated by main group element (lone-pair)・・・π(aryl) interactions
Multi-component crystalline systems or co-crystals have received tremendous attention from academia and industry alike in the past decade. Applications of co-crystals are varied and are likely to positively impact a wide range of industries dealing with molecular solids. Co-crystallization has been used to improve the properties and performance of materials from pharmaceuticals to energetic materials, as well as for separation of compounds. This book combines co-crystal applications of commercial and practical interest from diverse fields in to a single volume. It also examines effective structural design of co-crystals, and provides insights into practical synthesis and characterization techniques. Providing a useful resource for postgraduate students new to applied co-crystal research and crystal engineering, it will also be of interest to established researchers in academia or industry.
Offers instructions, illustrations, patterns, and techniques for thirty beading projects that include alternative design options.
Elegant, old-world jewelry with modern style. Working with world-famous Swarovski crystal beads, author Laura McCabe creates luminous necklaces, earrings, pendants, and rings for beaders of every skill level. The author provides complete step-by-step instruction for 20 projects (10 for beginners) -- and presents 45 more in a photo gallery of design variations, teaching readers how to vary colors and shapes to create custom effects. All 65 designs are made with only three simple beadwork techniques: flat peyote stitch, tubular peyote stitch, and spiral rope. Laura McCabe also provides a chapter on making decorative embellishments, such as bezels, picots, berry clusters, and branch fringe. The concise instructions are illustrated with easy-to-follow illustrations. Beaders of any skill level can create their own high-end, boutique-style jewelry Goes beyond stringing to teach readers three basic beadweaving techniques and principles of design Only book on market endorsed by the worldÆs leading manufacturer of cut-crystal beads
A resource and guide to creating design alternatives for the Web, this book will lead Web site designers through those elements that can be easily--and some, not so easily--altered or enhanced. In-depth coverage and step-by-step solutions explains and shows how to design a site for optimum appearance and accessibility. The CD contains tutorial files, conversion and compression software, and more.
"ScienceArts" builds upon natural curiosity as children experience and explore basic science concepts as they create over 200 beautiful and amazing art experiments. Projects use common household materials and art supplies. The art activities are open-ended and easy to do with one science-art experiment per page, fully illustrated and kid-tested. The book inclues three indexes and an innovative charted Table of Contents. Suitable for home, school, museum programs, or childcare, all ages. Kids call this the "ooo-ahhh" book. Examples of projects include: - Crystal Bubbles - Dancing Rabbits - Building Beans - Magnetic Rubbing - Stencil Leaves - Magic Cabbage - Marble Sculpture - Immiscibles - Paint Pendulum - Ice Structures - Bottle Optics - Erupting Colors - Chromatography 1993 Benjamin Franklin Gold Award, Education/Teaching/Academic 1993 Benjamin Franklin Silver Award, Interior Design 1993 Benjamin Franklin Silver Award, Book Cover 1993 Washington Press Communicator Award, First Place Winner, Non-Fiction Book
Creating Glamorous Jewelry with Swarovski Elements presents a collection of modern reproductions of classic Hollywood glitz, worn by the dazzling starlets of the big screen, including Marlene Dietrich, Katherine Hepburn, and Marilyn Monroe. All 20 sparkling jewelry pieces are made with the internationally popular Swarovski products, including the newest items in their line of crystal beads and stones. Detailed instructions and illustrations take you step-by-step through the creation of each piece. Whether dressed up or dressed down, these statement pieces will be fun to wear and become stunning, heirloom-quality additions to your jewelry collection.