conventional film
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2021 ◽  
Vol 10 (3) ◽  
pp. 69-95
Author(s):  
Michael T. Smith

Looking at two films that center upon a sensory disability (Chaplin’s City Lights and Randa Haines’ Children of a Lesser God), I propose that despite many gestures of sensitivity, these films reinforce an othering of the non-normative subject through conventional film codes and conventions. For example, in Haines’ film, the protagonist James Leeds (William Hurt) delivers a lecture on facing his deaf students so that they can read his lips. However, this scene is shot with his back turned away from us (the viewer). Rather than presenting an instance of irony, moments like this reinforce notions of normativity. Specifically, it’s the mechanism(s) behind and within film production that reinforce problematic notions of “normality” while trying to trump them.


2021 ◽  
pp. 1-44
Author(s):  
Jeng-haur Horng ◽  
Chia-Chun Yu ◽  
Yang-Yuan Chen

Abstract The third particle occurred at the interface of contacting surfaces is common situations in relative motion part. This study involved developing an analysis framework to investigate the contact characteristics in the full range of 3-body mixed lubrication. Conventional 2-body mixed lubrication is a special case of 3-body mixed lubrication analysis with particle size of zero. This study revealed that the values of real contact area, film thickness, contact mode, and the solid contact load in 3-body contact were larger than those in ideal 2-body contact in mixed lubrication, and they increased with an increasing particle size or density under the study conditions. The initial stages and transition processes of four types of 3-body contact modes under mixed lubrication were significantly different for different particle sizes and densities. The size of the third particle increased the values of both minimum and maximum values, λmin and λmax, of film parameter in the mixed lubrication regime. The particle density did not have a significant effect on the λmax value in mixed lubrication. Higher particle density led to a larger λmin value in mixed lubrication. The conventional film parameter, λ, was not a sufficient indicator of the different lubrication regimes in 3-body contact.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1742
Author(s):  
Ivo Laidmäe ◽  
Andres Meos ◽  
Irja Alainezhad Kjærvik ◽  
Sveinung G. Ingebrigtsen ◽  
Nataša Škalko-Basnet ◽  
...  

The hydration of phospholipids, electrospun into polymeric nanofibers and used as templates for liposome formation, offers pharmaceutical advantages as it avoids the storage of liposomes as aqueous dispersions. The objective of the present study was to electrospin and characterize amphiphilic nanofibers as templates for the preparation of antibiotic-loaded liposomes and compare this method with the conventional film-hydration method followed by extrusion. The comparison was based on particle size, encapsulation efficiency and drug-release behavior. Chloramphenicol (CAM) was used at different concentrations as a model antibacterial drug. Phosphatidylcoline (PC) with polyvinylpyrrolidone (PVP), using ethanol as a solvent, was found to be successful in fabricating the amphiphilic composite drug-loaded nanofibers as well as liposomes with both methods. The characterization of the nanofiber templates revealed that fiber diameter did not affect the liposome size. According to the optical microscopy results, the immediate hydration of phospholipids deposited on the amphiphilic nanofibers occurred within a few seconds, resulting in the formation of liposomes in water dispersions. The liposomes appeared to aggregate more readily in the concentrated than in the diluted solutions. The drug encapsulation efficiency for the fiber-hydrated liposomes varied between 14.9 and 28.1% and, for film-hydrated liposomes, between 22.0 and 77.1%, depending on the CAM concentrations and additional extrusion steps. The nanofiber hydration method was faster, as less steps were required for the in-situ liposome preparation than in the film-hydration method. The liposomes obtained using nanofiber hydration were smaller and more homogeneous than the conventional liposomes, but less drug was encapsulated.


2021 ◽  
Author(s):  
Aisling Yeoman

Even as contemporary film studies programs incorporate archival studies into courses, conventional film history, criticism, curatorial writing, and scholarly discourse rarely consider the physical characteristics and technical information intrinsic to the print itself or, indeed the negative elements from which prints are generated. Through an examination of four archival prints of Death Weekend (1976) – a film co-produced by Cinépix and Quadrant Films with funding from the Canadian Film Development Corporation – the thesis proposes a condensed timeline of key events in the life cycle of the prints starting with creation at a film processing lab and ending with acquisition by an archive. The thesis demonstrates that each print is physically unique and has unique provenance. It shows the importance of these factors, seeking to correct the rampant marginalization of the work of the lab and archive by privileging their contributions and foregrounding the preserved prints as rare objects.


2021 ◽  
Author(s):  
Aisling Yeoman

Even as contemporary film studies programs incorporate archival studies into courses, conventional film history, criticism, curatorial writing, and scholarly discourse rarely consider the physical characteristics and technical information intrinsic to the print itself or, indeed the negative elements from which prints are generated. Through an examination of four archival prints of Death Weekend (1976) – a film co-produced by Cinépix and Quadrant Films with funding from the Canadian Film Development Corporation – the thesis proposes a condensed timeline of key events in the life cycle of the prints starting with creation at a film processing lab and ending with acquisition by an archive. The thesis demonstrates that each print is physically unique and has unique provenance. It shows the importance of these factors, seeking to correct the rampant marginalization of the work of the lab and archive by privileging their contributions and foregrounding the preserved prints as rare objects.


2021 ◽  
pp. 1-12
Author(s):  
Penghao Duan ◽  
Li He

Abstract In this study, a turbine squealer tip is optimized by a multi-objective genetic algorithm (MOGA) with varying squealer heights and tip cooling configurations. The three objectives selected are the aerodynamic efficiency, the film cooling effectiveness and the surface temperature variance. The multi-scale methodology is implemented to reduce the computational cost and to skip the meshing of cooling holes. Two optimization approaches are compared: a) a conventional method that optimizes an uncooled shape first and then the cooling configuration sequentially, and b) a method that optimize shaping and cooling concurrently. The concurrent method is found to obtain a heat transfer performance that is not achieved by the conventional optimization. Moreover, by adding the cooling, the performance ranking of the uncooled blades in terms of the aerodynamic efficiency is changed. These observations are due to the strong interaction between the coolant and the tip leakage flow. They indicate that the coolant injected at the tip is not passive as expected in the conventional film cooling designs. By altering the tip leakage flow structure, the coolant can reduce the tip leakage loss, which contradicts the conventional wisdom that the added coolant should always lead to extra losses due to the extra mixing. More detailed observations of the flow field indicate that the influence of the squealer height towards the aerodynamic efficiency is caused by two competing effects: the blockage effect to reduce the tip leakage mass flow rate and the sudden expansion loss effect to generate additional losses.


Author(s):  
Kazuyuki Yagi ◽  
Kazuki Nishida ◽  
Joichi Sugimura

This study describes traction behaviours of lubricant films having anomalous shapes under elastohydrodynamic lubrication conditions. The traction generated at a point contact area between a glass or sapphire disc and a steel ball was measured by changing the slide-to-roll ratio. Three alcohols, 1-dodecanol, ethylene glycol and glycerol, and two alkanes of n-tetradecane and n-hexadecane were used as lubricants. Lubricants developing anomalous film shapes exhibited a solid-like behaviour with a sharp traction peak at low slide-to-roll ratios. On the contrary, other lubricants having conventional film shapes indicated a gradual increase in traction coefficient with increasing slide-to-roll ratios. The similarity of the traction behaviour to that of traction fluids supports the solidification of the film, which developed anomalous film shapes.


Micromachines ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 87
Author(s):  
Trenton Cersoli ◽  
Alexis Cresanto ◽  
Callan Herberger ◽  
Eric MacDonald ◽  
Pedro Cortes

Shape memory polymers (SMPs) are materials capable of changing their structural configuration from a fixed shape to a temporary shape, and vice versa when subjected to a thermal stimulus. The present work has investigated the 3D printing process of a shape memory polymer (SMP)-based polyurethane using a material extrusion technology. Here, SMP pellets were fed into a printing unit, and actuating coupons were manufactured. In contrast to the conventional film-casting manufacturing processes of SMPs, the use of 3D printing allows the production of complex parts for smart electronics and morphing structures. In the present work, the memory performance of the actuating structure was investigated, and their fundamental recovery and mechanical properties were characterized. The preliminary results show that the assembled structures were able to recover their original conformation following a thermal input. The printed parts were also stamped with a QR code on the surface to include an unclonable pattern for addressing counterfeit features. The stamped coupons were subjected to a deformation-recovery shape process, and it was observed that the QR code was recognized after the parts returned to their original shape. The combination of shape memory effect with authentication features allows for a new dimension of counterfeit thwarting. The 3D-printed SMP parts in this work were also combined with shape memory alloys to create a smart actuator to act as a two-way switch to control data collection of a microcontroller.


2020 ◽  
Vol 31 (6) ◽  
pp. 351-360
Author(s):  
Tsunehito Horii ◽  
Hiroyuki Tsujimoto ◽  
Susumu Kageyama ◽  
Tetsuya Yoshida ◽  
Kenichi Kobayashi ◽  
...  

BACKGROUND: To overcome the unfavorable issues associated with conventional anti-adhesive HA/CMC film, we developed an anti-adhesive thermally cross-linked gelatin film. OBJECTIVE: We tried to clarify the re-attachability of the film and the required properties concerning the film thickness, stiffness and anti-adhesion effect. METHODS: To determine the optimal thickness, 5 kinds of the thickness of gelatin film and the conventional film were analyzed by the tensile test, shearing test, buckling test and tissue injury test. Finally, using the optimal film thickness, we tried to clarify the anti-adhesion effect of the reattached film. RESULTS: The tensile and shearing test showed gelatin films ≥30 μm thick had greater tensile strength and a smaller number of film fractures, than the conventional film. The buckling and tissue injury test showed gelatin films ≥60 μm thick had higher buckling strength and worse injury scores than the conventional film. The anti-adhesive effect of re-attached gelatin film using optimal thickness (30–40 μm) found the anti-adhesion score was significantly better than that of the control. CONCLUSIONS: Provided it has an optimal thickness, gelatin film can be reattached with enough physical strength not to tear, safety stiffness not to induce tissue injury, and a sufficient anti-adhesion effect.


2020 ◽  
Vol 30 (4) ◽  
pp. 413-420
Author(s):  
S. V. Shakhtarina ◽  
A. A. Danilenko ◽  
N. V. Afanasova ◽  
N. A. Falaleeva ◽  
S. A. Ivanov ◽  
...  

Bleomycin used as part of many chemo-therapeutic programs for treating Hodgkin lymphoma is associated with pulmonary toxicity. Development of complications after mediastinal radiotherapy is also well-known. However, the synergistic effect of the combination of radiotherapy and bleomycin is considered in the literature much less frequently and mainly when using the total focal doses (SOD) of 36 – 40 Gy. Since 1998 the chemo-radiotherapeutic regimens applied to the treatment of Hodgkin lymphoma in the MRRC (Obninsk) has involved subradical TTD of 20 – 30 Gy. The goal of the study is to evaluate pulmonary toxicity in Hodgkin lymphoma patients treated with chemo-radiotherapy involving ABVD and mediastinal treatment with TTD of 20 – 30 Gy.Methods. A series of 142 Hodgkin lymphoma patients received ABVD and mediastinal radiotherapy at the TTD 20 – 30 Gy. Conventional film and digital chest X-rays, linear and digital tomograms taken at different stages of treatment and follow up were analysed.Results. Changes in lungs in the form of a pathologic pulmonary pattern (interstitial pneumonitis) were seen in 39 (27.5%) of 142 patients. In 10 (25.6%) of 39 patients focal or confluent pneumonitis infiltration were found, that was 7% of the whole study group. Clinical evidence of bleomycin-induced pneumonitis was found in 6 (15.4%) of 39 patients. With follow-up terms up to 60 months fibrotic changes in lungs were absent. The occurrence of radiation pneumonitis was 17.6%, radiation fibrosis – 35.9%. Fibrotic changes were mainly grade 1 (94.1%). In HL patients with bleomycin-induced pneumonitis the occurrence of radiation pneumonitis was 43.6% (17 of 39 patients), radiation fibrosis – 58.9% (23 of 39 patients) while the corresponding figures for patients who did not have bleomycin-induced pneumonitis were 8.7% (9 of 103 patients) and 27.2% (28 of 103 patients), respectively (p < 0.001).Conclusion. A statistically significant increase in occurrence of radiation pneumonitis and radiation fibrosis was defined in HL patients who suffered bleomycin-induced pneumonitis.


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