Acetyl zingerone methyl ether protects hair against oxidative damage incurred during and after treatment with permanent dyes and helps extend longevity of newly developed hair colour.

Background: Use of permanent hair dyes causes unintended oxidative damage during the short time frame of the dyeing process that leads to perceivable changes in the feel, manageability and appearance of hair. Moreover, after hair has been dyed, regular exposure to the sun as a key environmental stressor continues to stimulate additional oxidative damage and to induce newly developed hair colours to fade prematurely or undergo changes in colour quality.

Objective: To document the utility of acetyl zingerone methyl ether (MAZ) as a newly designed haircare ingredient to afford extra protection against oxidative damage and safeguard the integrity of hair colour.

Photostability of Phenoxazine Derivatives.

Phenoxazine is a commonly used molecular building block, for example in optoelectronic applications and pharmaceuticals. However, it is highly susceptible to rapid photodegradation, especially in halogenated solvents. In the present study, we identify the degradation products in both halogenated and non-halogenated solvents by UV/Vis absorption, NMR spectroscopy and mass spectrometry.

A Stable Chichibabin Diradicaloid with Near-Infrared Emission.

Conjugated molecules with multiple radical centers such as the iconic Chichibabin diradicaloid hold promise as building blocks in materials for quantum sensing and quantum information processing. However, it is a considerable challenge to design simple analogues of the Chichibabin hydrocarbon that are chemically inert, exhibit high diradical character and emit light at a distinct wavelength that may offer an optical readout of the spin state in functional ensembles. Here we describe the serendipitous discovery of the stable TTM-TTM diradicaloid, which exhibits high diradical character, a striking sky-blue color and near-infrared (NIR) emission (in solution).

Giant Quantum Electrodynamic Effects on Single SiV Color Centers in Nanosized Diamonds.

Understanding and mastering quantum electrodynamics phenomena is essential to the development of quantum nanophotonics applications. While tailoring of the local vacuum field has been widely used to tune the luminescence rate and directionality of a quantum emitter, its impact on their transition energies is barely investigated and exploited. Fluorescent defects in nanosized diamonds constitute an attractive nanophotonic platform to investigate the Lamb shift of an emitter embedded in a dielectric nanostructure with high refractive index.

Absorption and birefringence study for reduced optical losses in diamond with high nitrogen-vacancy concentration.

The use of diamond colour centres such as the nitrogen-vacancy (NV) centre is increasingly enabling quantum sensing and computing applications. Novel concepts like cavity coupling and readout, laser-threshold magnetometry and multi-pass geometries allow significantly improved sensitivity and performance via increased signals and strong light fields. Enabling material properties for these techniques and their further improvements are low optical material losses via optical absorption of signal light and low birefringence.

Mixed-halide triphenyl methyl radicals for site-selective functionalization and polymerization.

Derivatives of the stable, luminescent tris-2,4,6-trichlorophenylmethyl (TTM) radical exhibit unique doublet spin properties that are of interest for applications in optoelectronics, spintronics, and energy storage. However, poor reactivity of the chloride-moieties limits the yield of functionalization and thus the accessible variety of high performance luminescent radicals. Here, we present a pathway to obtain mixed-bromide and chloride derivatives of TTM by simple Friedel-Crafts alkylation.

Input of solid-state C NMR to study permeation of wet archaeological bones by dicarboxylic fatty diacid-based chemicals.

Conservation treatment of degraded archaeological osseous materials is still an open challenge, since no specific conservation protocol is currently available for restorers or museum curators. This work aims to test the efficiency of two original consolidant solutions in consolidating archaeological material. Archaeological osseous materials remain rare and sparsely available, it is a real drawback for optimization of conservation treatments, therefore in the present work a set of representative samples was chosen.

Quantum-critical spin dynamics in quasi-one-dimensional antiferromagnets.

By means of nuclear spin-lattice relaxation rate T(1)(-1), we follow the spin dynamics as a function of the applied magnetic field in two gapped quasi-one-dimensional quantum antiferromagnets: the anisotropic spin-chain system NiCl(2)-4SC(NH(2))(2) and the spin-ladder system (C(5)H(12)N)(2)CuBr(4). In both systems, spin excitations are confirmed to evolve from magnons in the gapped state to spinons in the gapless Tomonaga-Luttinger-liquid state. In between, T(1)(-1) exhibits a pronounced, continuous variation, which is shown to scale in accordance with quantum criticality.

Efficient radio frequency filters for space constrained cryogenic setups.

Noise filtering is an essential part for measurement of quantum phenomena at extremely low temperatures. Here, we present the design of a filter which can be installed in space constrained cryogenic environment containing a large number of signal carrying lines. Our filters have a -3 db point of 65 kHz and their performance at GHz frequencies is comparable to the best available RF filters.

Utilizing computed tomography as a road map for designing selective and superselective neck dissection after chemoradiotherapy.

Objective: To determine whether computed tomography can distinguish low risk neck levels that can be omitted when neck dissection is undertaken after chemoradiotherapy.

Study Design: Case series with chart review.

Setting: Tertiary care center.

Orbitocranial wooden foreign body: a pre-, intra-, and postoperative chronicle: case report.

Objective: Intraorbital wooden foreign bodies--usually from a low-velocity puncture--are elusive and demand a low threshold for further imaging. In patients with traumatic injuries, orbital and intracranial air from fractures may be present, and it is particularly easy to overlook a wooden fragment

Clinical Presentation: A 53-year-old equestrian was kicked in the face by the rear hoof of a horse. The event was captured on video by her husband.

Hypertrophic olivary degeneration after resection of a cerebellar tumor.

We report a case of hypertrophic olivary degeneration due to cerebellar surgery for a low-grade tumor. A 27-year-old female presented with right-sided paresthesias and intermittent leg paresis following a right cerebellar resection of a tumor 2 weeks prior. One month later, her symptoms remained stable while her neurological examination demonstrated slight right hemi-body hypoesthesia and subtle appendicular ataxia in her right upper extremity.

Neural activities in human somatosensory cortical areas evoked by acupuncture stimulation.

Objectives: To investigate neural representation evoked by acupuncture from human somatosensory cortices, especially from primary (SI) and secondary (SII) somatosensory areas.

Design And Setting: Neuroimaging study - Blood-oxygenation-level-dependent (BOLD) functional MRI was performed during acupuncture on LI4 (n=12 healthy participants). Sham acupuncture and innocuous tactile stimulation were also applied on the same acupuncture site as control comparisons.

Chemoradiotherapy for adenoid cystic carcinoma: preliminary results of an organ sparing approach.

Objectives: A retrospective review of primary chemoradiotherapy (CRT) for adenoid cystic carcinoma (ACC) was performed to determine if CRT might be considered as an alternative to radiotherapy and/or definitive surgery.

Methods: All treatment-naive patients with ACC of the head and neck who were treated with definitive primary chemoradiotherapy using carboplatinum and paclitaxel at Dana-Farber Cancer Institute in 2000 through 2004 were identified. Information on site, stage, presenting symptoms, performance status, treatment, toxicity, and follow up were collected and tabulated for review.

Current practices in evaluating radiology residents, faculty, and programs: results of a survey of radiology residency program directors.

Rationale And Objectives: We surveyed program directors to determine current radiology program practices in evaluating their residents, faculty, and program.

Materials And Methods: In January 2003, a 52-item Web-based survey was made available to program directors of accredited core radiology programs. Responses to the items were tabulated to determine relative frequency distribution.

Modulation of cerebellar activities by acupuncture stimulation: evidence from fMRI study.

Recent neuroimaging studies have revealed that acupuncture stimulation modulates human central nervous system including cerebral limbic/paralimbic and subcortical structures. Due to the wide and intricate connections with cerebrum, we hypothesized that anatomically specific areas in human cerebellum are also modulated by acupuncture stimulation beyond classical involvement of cerebellum in motor coordination. Functional MRI (fMRI) was used to investigate neural substrates responding to the acupuncture stimulation of Pericardium 6 (PC6, Neiguan), an acupoint relevant for the management of nausea including vestibular-related motion sickness.

Acupuncture in the management of myofascial pain and headache.

Acupuncture encompasses a host of healing techniques that have been practiced for more than 2000 years. Many different techniques and styles are in use in the West. The scientific study of acupuncture regarding its effectiveness has proven to be problematic and definitive studies are few.

Non-ferromagnetic retinal tacks are a tolerable risk in magnetic resonance imaging.

Should patients with cobalt alloy (ASTM F563) retinal tacks (Grieshaber cat. #611.95) in their eyes be subjected to the magnetic fields used in magnetic resonance imaging? Although the tacks are not ferromagnetic, they will experience a retarding torque when they are moved at the high angular velocities of human eye motion.

MR imaging of stump neuroma.

Painful stump neuromas in the postamputation patient are difficult to diagnose and treat. We report a case in which magnetic resonance allowed precise preoperative diagnosis and localization of such a lesion. Magnetic resonance, with its ability for long axis imaging in the extremity, is ideally suited for the workup of stump neuromas.