Search results for " film"
showing 10 items of 3842 documents
Polysarcosine-Based Lipids: From Lipopolypeptoid Micelles to Stealth-Like Lipids in Langmuir Blodgett Monolayers.
2016
Amphiphiles and, in particular, PEGylated lipids or alkyl ethers represent an important class of non-ionic surfactants and have become key ingredients for long-circulating (“stealth”) liposomes. While poly-(ethylene glycol) (PEG) can be considered the gold standard for stealth-like materials, it is known to be neither a bio-based nor biodegradable material. In contrast to PEG, polysarcosine (PSar) is based on the endogenous amino acid sarcosine (N-methylated glycine), but has also demonstrated stealth-like properties in vitro, as well as in vivo. In this respect, we report on the synthesis and characterization of polysarcosine based lipids with C14 and C18 hydrocarbon chains and their end g…
Naratīva struktūra un galvenā tēla analīze Džeimsa Bonda filmās
2016
Par bakalaura darba “Naratīva struktūra un galvenā tēla analīze Džeimsa Bonda filmās” pētījuma problēmu tiek izvirzīta Džeimsa Bonda filmu apbrīnojamā popularitāte, tāpēc, lai noskaidrotu šo filmu panākumu cēloni, darba mērķis ir apskatīt Bonda filmām raksturīgo naratīva struktūru, filmas tēlus un to lomas, kā arī pašu galveno varoni. Darba teorija ir balstīta uz teorētiķu atziņām un pētnieciskajām iestrādnēm par populāro kultūru, naratīvu, žanru kā būtisku naratīva sastāvdaļu, formālistu naratīva studijām, kā arī kino valodas elementiem. Ar kvantitatīvās un kvalitatīvās kontentanalīzes un naratīvas analīzes palīdzību ir veikta analīze piecās Džeimsa Bonda filmās: “Zelta pirksts”, “Dzīvo un…
Fresh-Cut Mangoes: How to Increase Shelf Life by Using Neem Oil Edible Coating
2022
The mango is the most widely cultivated tropical fruit. Fresh-cut mango is very useful, but it is very perishable. The purpose of this study was to highlight the effects of neem oil on fresh-cut mango fruits kept for 9 days at 4 ± 1 °C and 80 ± 5% relative humidity. The neem plant (Azadirachta indica) has numerous antioxidant and antibacterial properties. Despite this, very few studies have been carried out on neem oil added to edible coatings (EC) to retard ripening processes. Two formulations were tested: EC1 (hydroxypropyl methylcellulose + CaCl2) and EC2 (hydroxypropyl methylcellulose + CaCl2 + neem oil), both compared with an untreated sample (control). Physicochemica…
Simple metal under tensile stress: layer-dependent herringbone reconstruction of thin potassium films on graphite
2014
While understanding the properties of materials under stress is fundamentally important, designing experiments to probe the effects of large tensile stress is difficult. Here tensile stress is created in thin films of potassium (up to 4 atomic layers) by epitaxial growth on a rigid support, graphite. We find that this “simple” metal shows a long-range, periodic “herringbone” reconstruction, observed in 2- and 3- (but not 1- and 4-) layer films by low-temperature scanning tunneling microscopy (STM). Such a pattern has never been observed in a simple metal. Density functional theory (DFT) simulations indicate that the reconstruction consists of self-aligned stripes of enhanced atom density fo…
Innovative and Applied Research in Biology: Proceedings, Vol. 2
2020
The collection contains SCIENTIFIC articles on the topics of the LU 78 conference reports. The main focus is on innovative and applied research in biology and interdisciplinary fields.
Effect of Oxidized Potato Starch on the Physicochemical Properties of Soy Protein Isolate-Based Edible Films
2013
The influence of oxidized starch on the physicochemical properties of cast soy protein isolate films is determined in this study. Films were cast from heated (70 °C for 20 min) alkaline (pH=10) aqueous solutions of 7 % soy protein isolate containing 50 % (by mass) glycerol as a plasticizer and different levels of added oxidized starch (0, 5, 10, 15, and 20 %, by mass). For all types of films, opacity, contact angle, tensile strength, elongation at break, water vapour permeability, measured at 25 °C for four relative humidity differentials (30–53, 30–75, 30–84 and 30–100 %), differential scanning calorimetry and microstructure were determined after conditioning film specimens at 25 °C and 30…
Io, Robot
2006
Psiholoģiskā trillera iezīmes filmās "Would you rather" un "The forest"
2016
Bakalaura darba tēma ir psiholoģiskā trillera iezīmes filmās ‘’Ko tu labāk’’ un ‘Mežs’’. Darbs sastāv no teorētiskās daļas, kur tika apskatīta teorija par filmām, šausmu kino, šausmu apakš-žanriem, naratīvu un psihoanalīzi. Darbā tika aprakstīta arī metodoloģija ar kuras palīdzību tika veikts pētījums, kas ir semiotiskā analīze un fokusgrupas pētījums. Darbā tika noteikta pētījuma problēma- kas ir tie elementi, kas ļauj atšķirt šausmu filmu no psiholoģiskā trillera. Pētījuma mērķis ir noskaidrot, kuri elementi piesaista un kādā veidā psiholoģiski ietekmē skatītājus abās filmās; kas vispār nosaka psiholoģiskā trillera žanru un vai to vajadzētu nodalīt. Darbs tiek noslēgts ar secinājumiem.
Energy level determination of purine containing blue light emitting organic compounds
2018
Organic light emitting diodes (OLED) have found their applications in the mobile and TV screens. Till now the commercially available diodes are made by expensive thermal evaporation in a vacuum. The costs of OLED fabrication could be decreased by applying low-cost wet casting methods, for example, spin-coating. In this work, we have studied a group of blue light emitting purine derivatives which could potentially be used in OLEDs. The advantage of these compounds is their ability to form amorphous thin films from solutions. All the thin films were prepared by the spincoating method from chloroform solution on ITO glass. The position of hole and electron transport energy levels is important …
Rayleigh-instability-driven dewetting of thin Au and Ag films on indium-tin-oxide surface under nanosecond laser irradiations
2013
Investigations have been carried out on laser-beam-induced nanoparticle (NP) formation in thin (5 nm) Au and Ag films on indium-tin-oxide substrate. After the irradiation the films were observed to break-up into NPs through a dewetting mechanism. This mechanism was investigated as a Rayleigh-instability- driven process. In fact, for each used laser fluence, the resulting Au and Ag NPs' mean size and surface-to-surface mean distance were quantified and correlated between them in the framework of the Rayleigh-instability theory showing an excellent agreement. © The Institution of Engineering and Technology 2013.