Negative frequency-dependent foraging behaviour in a generalist herbivore (Alces alces) and its stabilizing influence on food web dynamics.

Resource selection is widely appreciated to be context-dependent and shaped by both biological and abiotic factors. However, few studies have empirically assessed the extent to which selective foraging behaviour is dynamic and varies in response to environmental conditions for free-ranging animal populations. Here, we assessed the extent that forage selection fluctuated in response to different environmental conditions for a free-ranging herbivore, moose (Alces alces), in Isle Royale National Park, over a 10-year period.

Comparison of the Pentax-AWS airway scope with the Macintosh laryngoscope for nasotracheal intubation: a randomized, prospective study.

Study Objective: To evaluate the effectiveness of the Pentax-AWS Airway Scope (AWS) in comparison to the Macintosh laryngoscope during nasotracheal intubation.

Design: Prospective randomized study.

Setting: Operating room of a university-affiliated hospital.

Ferromagnetic ordering and simultaneous fast magnetization tunneling in a Ni4 single-molecule magnet.

Low-temperature heat capacity and oriented single-crystal field-cooled and zero-field-cooled magnetization data for the single-molecule magnet [Ni(hmp)(dmb)Cl](4) are presented that indicate the presence of ferromagnetic ordering at approximately 300 mK, which has little effect on the magnetization relaxation rates.

Magnetic quantum tunneling: insights from simple molecule-based magnets.

This perspectives article takes a broad view of the current understanding of magnetic bistability and magnetic quantum tunneling in single-molecule magnets (SMMs), focusing on three families of relatively simple, low-nuclearity transition metal clusters: spin S = 4 Ni(II)(4), Mn(III)(3) (S = 2 and 6) and Mn(III)(6) (S = 4 and 12). The Mn(III) complexes are related by the fact that they contain triangular Mn(III)(3) units in which the exchange may be switched from antiferromagnetic to ferromagnetic without significantly altering the coordination around the Mn(III) centers, thereby leaving the single-ion physics more-or-less unaltered. This allows for a detailed and systematic study of the way in which the individual-ion anisotropies project onto the molecular spin ground state in otherwise identical low- and high-spin molecules, thus providing unique insights into the key factors that control the quantum dynamics of SMMs, namely: (i) the height of the kinetic barrier to magnetization relaxation; and (ii) the transverse interactions that cause tunneling through this barrier.

Displacement of the epiglottis during intubation with the Pentax-AWS Airway Scope.

The Pentax-AWS system is a rigid indirect video laryngoscope with integrated tube guidance. Complications associated with this device are not well understood. We report two cases of epiglottis malposition during intubation with the Pentax-AWS.

Nanomodulation of molecular nanomagnets.

Detailed synthetic, structural, and magnetic characterizations for a family of six [Mn(3)Zn(2)](13+) complexes are presented. These complexes have planar [Mn(3)(III)-(mu(3)-oxo)](7+) core magnetic units and have formulas represented by [cation](3)[Mn(3)Zn(2)(R-salox)(3)O(N(3))(6)X(2)], where [cation](+) = [NEt(4)](3)(+) or [AsPh(4)](3)(+); R = H or Me; and X = Cl(-), Br(-), I(-), or N(3)(-). Least-squares fits to the magnetic susceptibility data for these complexes indicate large negative values of the axial zero field splitting (ZFS) parameter D (approximately -1.

Pentax-AWS airway Scope as an alternative for awake flexible fiberoptic intubation of a morbidly obese patient in the semi-sitting position.

For anesthesia induction in a morbidly obese patient with a full stomach, awake flexible fiberoptic bronchoscope (FOB) intubation in the semi-sitting position may be a suitable choice. A new rigid indirect videolaryngoscope, the Pentax-AWS system, has a unique feature of an adjustable built-in monitor and is designed to be used in patients in various positions. However, the efficacy of its use in such situations has not been investigated or reported.

Single-molecule-magnet behavior and spin changes affected by crystal packing effects.

Five Mn 3Zn 2 heterometallic complexes have been synthesized and structurally and magnetically characterized. Spin ground states up to S = 6 have been observed for these complexes and are shown to depend on the cocrystallizing cation and on the terminal ligand. Large axial zero-field interactions ( D = -1.

Segmental radius and ulna fractures with scaphocapitate fractures and bilateral multiple epiphyseal fractures.

Segmental forearm fractures are rare in children, and management is controversial. Epiphyseal injuries further complicate matters. We report the case of a 15-year-old boy who had segmental radius and ulna fractures with a coronal split of a metaphyseal fragment, along with bilateral epiphyseal fractures of the distal radius and ulna as well as ipsilateral scaphocapitate fractures with perilunate dislocation.

Strategies and algorithms for management of the difficult airway.

Management of the difficult airway is the most important patient safety issue in the practice of anaesthesia. Many national societies have developed algorithms and guidelines for management of the difficult airway. The key issues of this chapter are definition of terms, the advantages and disadvantages of the use of guidelines, and a comparison of different algorithms and guidelines for management of the most important clinical airway scenarios.