Carbocations and the Complex Flavor and Bouquet of Wine: Mechanistic Aspects of Terpene Biosynthesis in Wine Grapes.

Computational chemistry approaches for studying the formation of terpenes/terpenoids in wines are presented, using five particular terpenes/terpenoids (1,8-cineole, α-ylangene, botrydial, rotundone, and the wine lactone), volatile compounds (or their precursors) found in wine and/or wine grapes, as representative examples. Through these examples, we show how modern computational quantum chemistry can be employed as an effective tool for assessing the validity of proposed mechanisms for terpene/terpenoid formation

Robotic Deployment of Extraterrestrial Seismic Networks

Manual installation of seismic networks in extraterrestrial environments is risky, expensive and error-prone. A more reliable alternative is the automated deposition with a light-weight robot manipulator. However, inserting a spiked sensor into soil is a challenging task for a robot since the soil parameters are variable and difficult to estimate. Therefore, we investigate an approach to accurate insertion and positioning of geophones using a Cartesian impedance controller with a feed-forward force term. The feed-forward force component of the controller is either estimated using the Fundamental Earth-Moving Equation, the Discrete Element Method or empirically. For the first time, both the geological aspects of the problem as well as the aspects of robotic control are considered. Based on this consideration, the control approach is enhanced by predicting the resistance force of the soil. Experiments with the humanoid robot Rollin’ Justin inserting a geophone into three different soil samples validate the proposed method

Entrapment der A.tibialis anterior in einer distalen Tibiafraktur nach intramedullärer Nagelung

Zusammenfassung: Es wird ein Fallbericht über ein Entrapment der A.tibialis anterior im Rahmen der Versorgung einer distalen geschlossenen Tibiafraktur mit Hilfe eines Tibianagels präsentiert. Wegen offenen Metatarsalefrakturen mit einer schwerer Weichteilverletzung der gleichen Seite wurde nach mehreren Débridements eine freie Latissimus-dorsi-Lappenplastik zur Deckung geplant. Die präoperative Angiographie zeigte einen Verschluss der A.tibials anterior auf Frakturhöhe. Der Verschluss wurde als eine sekundäre Gefäßokklusion interpretiert, die durch eine Intimaverletzung des Gefäßes im Rahmen der Verletzung verursacht wurde. Das Entrapment der Arterie im Frakturspalt wurde erst intraoperativ während der Präparation für die Gefäßanstomosierung der Lappenplastik festgestell

Elektronische Wechselwirkung zwischen aufgedampften Germaniumfilmen und Sauerstoff

Ge films of thicknesses within the p-boundary layer thickness are precipitated under ultra high vacuum conditions, at 77 °K. They are investigated either in the disordered state (before annealing at a higher temperature) or in the ordered state (after annealing). The electric resistance R and the photoelectric work function & are measured before and after the influence of known amounts of oxygen. R is plotted as a function of time and coverage n, Φ as a function of n. Small amounts of oxygen cause R to increase without changing Φ, large amounts result in a succeeding decrease of R and cause Φ to increase by 0.1 to 0.2 V. The results are discussed by means of a band model. At small coverages oxygen acts as an electron donator, at higher coverages as an electron acceptor. © 1963, Walter de Gruyter. All rights reserved

Magnet Resonance Angiography versus Conventional Angiography for the Planning of Reconstructive Surgeries

Summary:: Assessing the vascular status and anatomy of the lower extremity is of crucial importance when planning the coverage of a tissue defect with a free flap. The standard techniques comprise the clinical examination, Doppler ultrasound and Doppler sonography for healthy patients without suspected direct trauma to the vascular system, and conventional digital subtraction angiography (DSA), respectively, in case of traumatized vessels or patients with peripheral arterial obstructive disease. Materials:: We have conducted a prospective study for the comparison of the magnetic resonance angiography (MRA) to the conventional DSA. Fourteen patients were examined presurgically by means of both a conventional DSA and an MRA before undergoing planned microvascular coverage of tissue defects of the lower extremity. The surgeon, based on a questionnaire, assessed and compared both examination results according to their information content. Furthermore, the presurgically planned level and localization of the vascular anastomoses and the intraoperative findings were compared postoperatively. Results:: The MRA examination yielded sufficient information on the vascular anatomy to enable the surgeon to carry out a detailed presurgical planning. Additionally, the use of MRA showed clear advantages with regard to both patient and user comfort. Conclusion:: Taking into account the advantages for the assessment of vessels using MRA, in particular when considering the impact of the frequently varying vascular anatomy of the lower leg on reconstructive surgery, as well as the significantly lower morbidity rate of the examination itself, then the MRA must be regarded as a safe alternative to the DS

Extending holographic LEED to ordered small unit cell superstructures

Following on the success of the recent application of holographic LEED to the determination of the 3D atomic geometry of Si adatoms on a SiC(111) p(3x3) surface, which enabled that structure to be solved, we show in this paper that a similar technique allows the direct recovery of the local geometry of adsorbates forming superstructures as small as p(2x2), even in the presence of a local substrate reconstruction.Comment: 10 pages, 5 figures postscript included, revtex, Phys. Rev. B in pres

Clinical outcome and long-term follow-up after liposuction procedures

Liposuction is one of the most common aesthetic procedure used in plastic surgery. Reports are available on the results, the probable complications, and the feedback of patients. However, systematic studies dealing with these aspects using reliable large-enough data are still needed. The data comprised 116 procedures during a 6-year period up to 2005. The data were processed and categories of results were formed. Furthermore, a follow-up examination and a survey on the feedback of patients were carried out. Significant differences were identified in indications, results, and complications. The follow-up examinations and the survey showed satisfying results. In the majority of cases, surgeons were satisfied with the operations. In conclusion, if conducted by qualified surgeons in appropriate surgical conditions and postoperative care possibilities, liposuction may be considered as a reliable surgical procedure. The success of this procedure depends, however, on suitable infrastructure and operative competenc

Retrospective analysis and clinical evaluation of mandible reconstruction with free fibula flap

The objective of this investigation was to evaluate the indications for and the functional and cosmetic results of mandible reconstruction using free vascularized fibular flaps. It was also designed to assess the patients' quality of life, daily activities, and self-esteem, with special emphasis on patient satisfaction. We conducted a retrospective chart review of all patients who underwent osseus or osteocutaneous free flap reconstruction of the mandible over a 10-year period (1992-2002). Those in whom a vascularized fibular flap was used were included in the study and invited for a follow-up comprehensive physical examination and x-ray evaluation. A questionnaire was also administered to evaluate patient satisfaction. Twenty-six patients were included in the study. Fourteen patients died after an average of 2years and 9months postoperatively due to their prognosis despite surgical intervention and adjuvant therapy. Of the remaining 12 patients, 6 appeared for the follow-up evaluation, 2 were unavailable for follow-up, and 4 denied participating. Of these 6 patients, all experienced a decrease in pain and were satisfied with their results. At the time of the latest follow-up, they experienced some difficulties swallowing, and in 3 patients, their articulation was impaired. All 6 patients would undergo the procedure again. Reconstruction of the mandible using a vascularized fibular graft produces satisfactory functional and cosmetic results. In benign lesions, the procedure is highly indicated. However, in the case of malignancy, most patients do not survive their primary tumor. Given the patients limited life expectancy, the improvement in their quality of life as a result of the improved appearance and function of the reconstructed mandible needs to be weighed against the potential morbidity of the operative intervention on an individual basi

UAS Literary & Arts Journal

Proof copy provided by Tidal Echoes.The 2015 edition of Tidal Echoes presents an annual showcase of writers and artists who share one thing in common: a life surrounded by the rainforests and waterways of Southeast Alaska.Dedication -- Editor’s Note -- Mid-Air -- Acknowledgements -- Salmon (Gohan Desu Yo/It’s Dinner Time) -- Xwaayeenák Richard Dauenhauer -- Loon -- Burney Falls -- Richard Dauenhauer -- Egg Carton Fox -- August Afternoon at Helle’s Pool, Vancouver, Washington -- Oak Run -- Buddy Tabor teaches me to filet a halibut -- Icelander -- Home -- Season’s End -- Young Me, Old Me -- The Window Seat -- Wind -- UAS Student Back Study -- Paintbrush Conversations -- Grey River Soulshine -- Across the Universe -- Aurora-Skaters’ Cabin 1 -- Whiskey and Autumn -- Leaf Wolf -- Spring Cleaning the Perennials -- Ode to a Rose -- Final Point -- After Spring Recital -- Olympic Ceiling -- Rodda-Hard going (too little snow) -- Birch Bark Calligraphy No. 2 -- Fishtailing -- Working the Corks -- Modern Alaskan Storyteller: An Interview with Ishmael Hope -- Bailer at the Back of the Boat (Excerpt) -- Close Up -- Bothering the Dauenhauers -- In Memory of Andrew Hope III -- Wolf Brimhat -- I Am From -- Crossing -- Revelations and Realizations -- The Shrinking Girl -- Untitled (Andi in Niki’s Room) -- Afternoon Reading, Rainy Room -- My Grandmother’s House in Metlakatla -- Deacon Charles Rohrbacher, Icon of St. Nicholas -- Honoring Tibet -- Fumi Matsumoto: Finding Art in Culture -- Pathway of Thorns -- Minidoka Interlude -- Mountain Dew Parrots -- Watch Out for Falling Objects -- Loose Change -- An Unkind Demise -- A Place That Holds Names -- Immortality (skull side) -- Opening Again the Box of Wisdom -- Iff’n I Go -- Colorless Blues -- The Heartsdance -- King of Dreams -- Hungering -- Colonialism -- Inside Out -- Rachel Day -- Lying Here -- Note to Wife -- Death -- Round the Clock -- Untitled (trap) -- Seeds of Racism -- Auschwitz Remembrance -- Moab 1 -- Pearl of the Orient -- Moab 3 -- Scars -- Transporting -- In Eliason Harbor -- Poet Passes: Leaves Words Behind -- Tough Guy -- Wolf Helmet -- Biographie

Potassium-mediated zincation of ferrocene and ruthenocene : potassium, the architect behind supramolecular structural variations

Direct zincation of ferrocene and ruthenocene by the synergic base [PMDETA.K(μ-TMP)(μ-Me)Zn(Me)] produces the monozincated complexes [{PMDETA.K(μ-Me)2Zn(Fc)}∞] and [{PMDETA.K(μ-Me)2Zn(Rc)}2] respectively, having similar monomeric (dinuclear) units but aggregating supramolecularly in very different polymeric and dimeric forms