scholarly journals Deposition of drugs in the nose and sinuses with an exhalation delivery system vs conventional nasal spray or high-volume irrigation in Draf II/III post-surgical anatomy

2019 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
P.G. Djupesland ◽  
J.C. Messina ◽  
J.N. Palmer
Keyword(s):  
Nasal Spray ◽  
Delivery System ◽  
High Volume ◽  
Surgical Anatomy ◽  
Nose And Sinuses

Competitive funding in North Rhine-Westphalia

2017 ◽  
Vol 27 (5) ◽  
pp. 495-515
Author(s):  
Matthias Kiese ◽  
Julian Kahl
Keyword(s):  
Delivery System ◽  
Selection Process ◽  
National Level ◽  
High Volume ◽  
Third Party ◽  
Federal State ◽  
Regional Competitiveness ◽  
Content Type ◽  
Competitive Funding ◽  
German Federal State

Purpose This paper aims to examine a cluster-based strategy implemented in the German federal state of North Rhine-Westphalia under the 2007-2013 “Regional Competitiveness and Employment” programme. Departing from traditional discretionary approaches, a substantial share of the funds was now allocated on a competitive basis. The authors analyse the resulting distribution of funds across stakeholders and sub-regions and try to assess the pros and cons of this process, which constitutes a novel delivery system for cluster policies. Design/methodology/approach Following a literature review, the paper applies two sets of regression models to explain the distribution of funds under the new policy delivery system. Interviews with stakeholders provide evidence on the efficacy and efficiency of the competitive funding process. Findings The changes introduced in the 2007-2013 funding period benefit universities and research organisations, as well as intermediary organisations, whereas the private sector and especially small firms capture a rather small piece of the pie. Contrary to the “innovation paradox” hypothesis, structurally weak sub-regions did not lose out in state-wide funding contests. The presence of universities with an overall high volume of third-party funding is the key variable explaining the spatial distribution of funds. This interview evidence identifies the duration of the selection process and its administrative complexity as main weaknesses, which the authors attribute to bureaucratic rationality on different levels. Originality/value This is the first analysis of a competitive funding scheme at the sub-national level, using the German federal state of North Rhine-Westphalia as a case study. It sheds light on the mechanisms of funding allocation in the 2007-2013 funding period of the European Union’s cohesion policy, which was reoriented towards supporting regional competitiveness and employment in response to the Lisbon Agenda. While competitive funding is still seen as mobilising regional stakeholders and improving the quality of projects and the selection process, these findings highlight administrative complexity as a main deficiency, which has partly been addressed in the 2014-2020 funding period.

scholarly journals Liquid Film Translocation Significantly Enhances Nasal Spray Delivery to Olfactory Region: A Numerical Simulation Study

Pharmaceutics ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 903
Author(s):  
Xiuhua April Si ◽  
Muhammad Sami ◽  
Jinxiang Xi
Keyword(s):  
Liquid Film ◽  
Nasal Spray ◽  
Delivery System ◽  
Transport Model ◽  
Ex Vivo ◽  
Film Formation ◽  
Optimal Dose ◽  
Subjective Perception ◽  
Wall Film

Previous in vivo and ex vivo studies have tested nasal sprays with varying head positions to enhance the olfactory delivery; however, such studies often suffered from a lack of quantitative dosimetry in the target region, which relied on the observer’s subjective perception of color changes in the endoscopy images. The objective of this study is to test the feasibility of gravitationally driven droplet translocation numerically to enhance the nasal spray dosages in the olfactory region and quantify the intranasal dose distribution in the regions of interest. A computational nasal spray testing platform was developed that included a nasal spray releasing model, an airflow-droplet transport model, and an Eulerian wall film formation/translocation model. The effects of both device-related and administration-related variables on the initial olfactory deposition were studied, including droplet size, velocity, plume angle, spray release position, and orientation. The liquid film formation and translocation after nasal spray applications were simulated for both a standard and a newly proposed delivery system. Results show that the initial droplet deposition in the olfactory region is highly sensitive to the spray plume angle. For the given nasal cavity with a vertex-to-floor head position, a plume angle of 10° with a device orientation of 45° to the nostril delivered the optimal dose to the olfactory region. Liquid wall film translocation enhanced the olfactory dosage by ninefold, compared to the initial olfactory dose, for both the baseline and optimized delivery systems. The optimized delivery system delivered 6.2% of applied sprays to the olfactory region and significantly reduced drug losses in the vestibule. Rheological properties of spray formulations can be explored to harness further the benefits of liquid film translocation in targeted intranasal deliveries.

Morphology, Distribution and Identification of Micro-Constituents Along Grain Boundaries in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 176-177
Author(s):  
D. E. Fornwalt ◽  
A. R. Geary ◽  
B. H. Kear
Keyword(s):  
Electron Microscope ◽  
Grain Boundaries ◽  
Volume Fraction ◽  
Rupture Life ◽  
Stress Rupture ◽  
High Volume ◽  
Precipitate Morphology ◽  
Stress Rupture Life ◽  
Nickel Base ◽  
Scanning Electron

A systematic study has been made of the effects of various heat treatments on the microstructures of several experimental high volume fraction γ’ precipitation hardened nickel-base alloys, after doping with ∼2 w/o Hf so as to improve the stress rupture life and ductility. The most significant microstructural chan§e brought about by prolonged aging at temperatures in the range 1600°-1900°F was the decoration of grain boundaries with precipitate particles.Precipitation along the grain boundaries was first detected by optical microscopy, but it was necessary to use the scanning electron microscope to reveal the details of the precipitate morphology. Figure 1(a) shows the grain boundary precipitates in relief, after partial dissolution of the surrounding γ + γ’ matrix.

A Comparison of Tem and Apfim to the Interpretation of Modulated Microstructures

1985 ◽  
Vol 43 ◽  
pp. 70-71
Author(s):  
M.G. Burke ◽  
M.K. Miller
Keyword(s):  
Low Temperature ◽  
Microstructural Characterization ◽  
Superlattice Reflection ◽  
High Volume ◽  
Atom Probe ◽  
Dark Field ◽  
Miscibility Gap ◽  
Second Phase ◽  
Two Phase ◽  
Probe Field

Interpretation of fine-scale microstructures containing high volume fractions of second phase is complex. In particular, microstructures developed through decomposition within low temperature miscibility gaps may be extremely fine. This paper compares the morphological interpretations of such complex microstructures by the high-resolution techniques of TEM and atom probe field-ion microscopy (APFIM).The Fe-25 at% Be alloy selected for this study was aged within the low temperature miscibility gap to form a <100> aligned two-phase microstructure. This triaxially modulated microstructure is composed of an Fe-rich ferrite phase and a B2-ordered Be-enriched phase. The microstructural characterization through conventional bright-field TEM is inadequate because of the many contributions to image contrast. The ordering reaction which accompanies spinodal decomposition in this alloy permits simplification of the image by the use of the centered dark field technique to image just one phase. A CDF image formed with a B2 superlattice reflection is shown in fig. 1. In this CDF micrograph, the the B2-ordered Be-enriched phase appears as bright regions in the darkly-imaging ferrite. By examining the specimen in a [001] orientation, the <100> nature of the modulations is evident.

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