1,223 research outputs found
Recommended from our members
Glancing angle deposition of sculptured thin metal films at room temperature
Metallic thin films consisting of separated nanostructures are fabricated by evaporative glancing angle deposition at room temperature. The columnar microstructure of the Ti and Cr columns is investigated by high resolution transmission electron microscopy and selective area electron diffraction. The morphology of the sculptured metallic films is studied by scanning electron microscopy. It is found that tilted Ti and Cr columns grow with a single crystalline morphology, while upright Cr columns are polycrystalline. Further, the influence of continuous substrate rotation on the shaping of Al, Ti, Cr and Mo nanostructures is studied with view to surface diffusion and the shadowing effect. It is observed that sculptured metallic thin films deposited without substrate rotation grow faster compared to those grown with continuous substrate rotation. A theoretical model is provided to describe this effect
"Sensory Fit Panel" – Development of a new Advertising Claim Support method to assess aesthetic diaper fit performance in an objective, reliable and reproducible way
For the product design of diapers, the fit on the baby plays a significant role. In particular,
innovation in the areas of fit and freedom of movement have become increasingly important as lower order
needs like leakage are sufficiently met by most products. Today’s methods to measure diaper fit focus on technical measurements (engineering and technical fit) and parents’ subjective perceptions. While these methods are useful tools for product development purposes, they are not seen as sufficient for Advertising Claim Support needs. However, when a new fit innovation should be advertised, particularly when this is done in a competitive way, a robust technical support is needed to defend this claim in case of challenges by competitors or regulatory bodies. For this purpose, methods need to be objective and technically sound in order to be acceptable to advertising regulatory bodies. Independent, objective ratings would substantiate claims on a more reliable and reproducible base. To meet this need, the diaper fit sensory panel method was developed. This test reapplies the established sensory methodology used, e.g. to assess taste or smell in food and beverages
A Mensural Assessment of the Interrelation of the Glenoid Fossa, the Curve of Spee, the Gonial Angle, Posterior Cusp Angulation, Overbite, and Overjet as Factors of Occlusion
Molecular alterations in triple-negative breast cancer-the road to new treatment strategies.
Triple-negative breast cancer is a heterogeneous disease and specific therapies have not been available for a long time. Therefore, conventional chemotherapy is still considered the clinical state of the art. Different subgroups of triple-negative breast cancer have been identified on the basis of protein expression, mRNA signatures, and genomic alterations. Important elements of triple-negative breast cancer biology include high proliferative activity, an increased immunological infiltrate, a basal-like and a mesenchymal phenotype, and deficiency in homologous recombination, which is in part associated with loss of BRCA1 or BRCA2 function. A minority of triple-negative tumours express luminal markers, such as androgen receptors, and have a lower proliferative activity. These biological subgroups are overlapping and currently cannot be combined into a unified model of triple-negative breast cancer biology. Nevertheless, the molecular analysis of this disease has identified potential options for targeted therapeutic intervention. This has led to promising clinical strategies, including modified chemotherapy approaches targeting the DNA damage response, angiogenesis inhibitors, immune checkpoint inhibitors, or even anti-androgens, all of which are being evaluated in phase 1-3 clinical studies. This Series paper focuses on the most relevant clinical questions, summarises the results of recent clinical trials, and gives an overview of ongoing studies and trial concepts that will lead to a more refined therapy for this tumour type
Relevance of the H2 + O reaction pathway for the surface formation of interstellar water. Combined experimental and modeling study
No abstrac
Reversible and Irreversible Interactions of Poly(3-hexylthiophene) with Oxygen Studied by Spin-Sensitive Methods
Understanding of degradation mechanisms in polymer:fullerene
bulk-heterojunctions on the microscopic level aimed at improving their
intrinsic stability is crucial for the breakthrough of organic photovoltaics.
These materials are vulnerable to exposure to light and/or oxygen, hence they
involve electronic excitations. To unambiguously probe the excited states of
various multiplicities and their reactions with oxygen, we applied combined
magneto-optical methods based on multifrequency (9 and 275 GHz) electron
paramagnetic resonance (EPR), photoluminescence (PL), and PL-detected magnetic
resonance (PLDMR) to the conjugated polymer poly(3-hexylthiophene) (P3HT) and
polymer:fullerene bulk heterojunctions (P3HT:PCBM; PCBM =
[6,6]-phenyl-C61-butyric acid methyl ester). We identified two distinct
photochemical reaction routes, one being fully reversible and related to the
formation of polymer:oxygen charge transfer complexes, the other one,
irreversible, being related to the formation of singlet oxygen under
participation of bound triplet excitons on the polymer chain. With respect to
the blends, we discuss the protective effect of the methanofullerenes on the
conjugated polymer bypassing the triplet exciton generation
Molecular profiling contributes more than routine histology and immonohistochemistry to breast cancer diagnostics
Design and implementation of a low-cost mechatronic shoe for biomechanical analysis of the human locomotion
In this paper the development of a low-cost and easy wearable mechatronic system for the measurement of ground reaction forces (GRF) for the biomechanical analysis of the human locomotion is presented. The system consists of an insole, a conditioning device for the signals produced by the sensors applied to the insole and a data acquisition system connected to a USB portable storage. The sensors applied to the insole can measure the reaction forces in the horizontal and vertical directions during locomotion. The prototype was validated by comparing the data from the sensors with the values obtained using a force platform
- …