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Author(s): 

LOEB G.I. | NEIHOF R.A.

Journal: 

ADVANCES IN CHEMISTRY

Issue Info: 
  • Year: 

    1975
  • Volume: 

    145
  • Issue: 

    -
  • Pages: 

    319-335
Measures: 
  • Citations: 

    1
  • Views: 

    194
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    9
  • Issue: 

    2
  • Pages: 

    73-79
Measures: 
  • Citations: 

    0
  • Views: 

    333
  • Downloads: 

    167
Abstract: 

In the present work, cupric oxide (CuO) films were obtained through thermal annealing of the copper (Cu) films deposited on quartz substrates by DC magnetron sputtering method. The annealing was performed in air atmosphere for different times ranging from 60-240 min at temperature of 400 oC. The influence of annealing times on structural and morphological properties of the films was investigated by different analyses. The XRD results showed that the as-deposited film was Cu, while those annealed at different times were composed of CuO. By increasing annealing times up to 180 min, the intensity of CuO diffraction peaks increased and further enhancement of annealing times led to decrease of the crystallinity. Also, the AFM images of the films conformed the dependence of surface morphology to annealing times.

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Author(s): 

SHEYKH N. | KIANFAR SH.

Issue Info: 
  • Year: 

    2010
  • Volume: 

    -
  • Issue: 

    4 (50)
  • Pages: 

    14-20
Measures: 
  • Citations: 

    0
  • Views: 

    1212
  • Downloads: 

    0
Abstract: 

Polymeric absorbents are extensively used in the separation systems. In this paper, the preparation and characterization of a polymeric absorbent is considered.For this purpose Polyvinyl alcohol (PVA) films were prepared and then crosslinked by radiation method using gamma-ray and chemical methods by the use of Glutaraldehyde solution. In the chemical method, the reaction with and without sulphuric acid and in the radiation method the reaction in dry and also aqueous media containing acid were carried out. The gel content, water uptake and tensile properties were measured for all samples. The results showed that the radiation method in aqueous media containing acid led to the maximum gel formation. In addition, the radiation method led to the formation of films with more flexibility. Nickel and Manganese adsorptions were measured on the crosslinked films, which were obtained by the radiation and chemical methods. These measurements were made as a function of pH and also the concentration of metal ion in the solution. The maximum metal adsorption was found at pH=7. In addition, with increasing the metal ion concentration the amount of ion adsorption was increased. In general, our studies showed that an absorbent which is prepared by the radiation method is suitable for water adsorption and another formed by the chemical method is desirable in ion adsorption processes.

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Journal: 

INDIAN DRUG

Issue Info: 
  • Year: 

    1985
  • Volume: 

    23
  • Issue: 

    1
  • Pages: 

    45-46
Measures: 
  • Citations: 

    1
  • Views: 

    166
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    9
  • Issue: 

    2
  • Pages: 

    162-168
Measures: 
  • Citations: 

    0
  • Views: 

    854
  • Downloads: 

    0
Abstract: 

Introduction: Due to ever-increasing need for diagnostic radiographs in dentistry, it is necessary to observe techniques to minimize the absorbed patient dose. The aim of this study was the comparative evaluation of inherent visual characteristics such as contrast and density and the gross fog of standard occlusal films with those of occlusal films taken with intensifying screens.Materials and Methods: In this experimental research, standard occlusal films and occlusal films prepared by cutting extraoral films to the size of occlusal films and placing them between intensifying screens were used. After determination of the most appropriate exposure time and maximum kVp and mA, radiographs were taken from one step wedge and processed using the same condition. A total of 25 radiographs were taken from each of the two film types and then the radiographs underwent densitometry at similar points. In order to evaluate the gross fog, densitometry was carried out at 5 similar points on one unexposed film from each type. Data were analyzed using SPSS 11.5 software and Mann-Whitney test (a=0.05).Results: Based on the results of this study, the density of the standard occlusal film was more than that of the occlusal film with intensifying screens (p value<0.001). The contrast of the film with intensifying screens was more than that of the standard occlusal film (p value<0.001). The gross fog of the film with intensifying screens was less than that of the standard occlusal film (p value=0.006).Conclusion: Occlusal films with intensifying screens have higher contrast and lower gross fog and density, but in the diagnostic range, in comparison with standard occlusal films; therefore, films with intensifying screens are recommended because they decrease patient absorbed dose by decreasing exposure time.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

KARI BROWN E.R. | CHOI K.

Issue Info: 
  • Year: 

    2006
  • Volume: 

    -
  • Issue: 

    -
  • Pages: 

    3311-3313
Measures: 
  • Citations: 

    2
  • Views: 

    148
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

Journal: 

SYST REV PHARM

Issue Info: 
  • Year: 

    2017
  • Volume: 

    8
  • Issue: 

    1
  • Pages: 

    31-31
Measures: 
  • Citations: 

    1
  • Views: 

    71
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 71

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Journal: 

SURFACE SCIENCE

Issue Info: 
  • Year: 

    2007
  • Volume: 

    601
  • Issue: 

    -
  • Pages: 

    4479-4483
Measures: 
  • Citations: 

    1
  • Views: 

    128
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2014
  • Volume: 

    9
  • Issue: 

    2
  • Pages: 

    99-106
Measures: 
  • Citations: 

    0
  • Views: 

    362
  • Downloads: 

    112
Abstract: 

Background & Objectives: Nanotechnology is one of great important part of technology. Nanoparticles can be used in different applications for industrial, medical, military and personal use. The objectives of this study were preparation of Polystyrene/ZnO nanocomposite films via a simple method and investigation of antibacterial activity of them.Materials and Methods: Polystyrene/ZnO nanoparticle (PS/nano-ZnO) composite films were prepared via simple method with 0, 0.1, 1 and 2.5% wt concentration of ZnO and characterized by scanning electron microscopy (SEM). The antibacterial properties of the product were investigated against Listeria monocytogenes, Escherichia coli, Staphylococcus aureus and Bacillus cereus.Results: The survival ratio of L. monocytogenes, E. coli, S. aureus and B. cereus decreased with increase of ZnO content on PS/nano-ZnO composite films and the best antibacterial activity was obtained with 2.5% wt ZnO-PS composite films for all bacteria. Results show the larger sensitivity of the S. aureus compared to other bacteria.Conclusion: The treated fabric with ZnO NP indicates significant improve for antibacterial properties for polystyrene fabric.

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Author(s): 

Esmaeili Ali | Rooien Ghasem

Issue Info: 
  • Year: 

    2024
  • Volume: 

    29
  • Issue: 

    2
  • Pages: 

    57-70
Measures: 
  • Citations: 

    0
  • Views: 

    49
  • Downloads: 

    23
Abstract: 

Sigmund Freud's theory posits that the essence of content analysis lies in uncovering the unconscious perceptions or cognitions embedded within a text. This endeavor finds its academic grounding within the discipline of psychology of art, where the underlying goals, values, cultural influences, and tendencies of creators or creations are scrutinized. Particularly within the cinematic domain, filmmakers are tasked with unraveling the intricacies of conveying meanings and messages through the nuanced language of cinema. In the latter half of the 20th century, content analysis has risen to prominence as a predominant research approach in both psychology and art studies. This study endeavors to apply qualitative content analysis (QCA) to the realm of cinema. Drawing upon Freud's psychoanalytic theory, specifically emphasizing the concept of personality, the research focuses on three seminal films by Alfred Hitchcock (Rope, Psycho, and Vertigo). Freud's theoretical framework is chosen for its influence on character development in cinema and its pioneering contributions to psychoanalysis, particularly in symbolism and personality theory. The selection of Hitchcock's films for case studies is deliberate, as they aptly showcase the centrality of character and delve into profound psychological dimensions. Personality emerges as the linchpin concept, seamlessly bridging Freud's psychoanalytic theory with the narrative intricacies of Hitchcock's films. The research methodology employs a non-random sampling strategy, guided by thematic and narrative proximity, alongside analytical indicators derived from Freud's theoretical constructs. The research methodology encompasses various analytical components, including analysis units, meaning units, content areas, and analytical categories. These components are meticulously selected through an exploratory approach, leveraging both traditional library resources and contemporary audio-visual materials. The findings of the study underscore a multifaceted analysis, encompassing the exploration of latent content, identification of primary characters, delineation of meaningful narrative sequences, and elucidation of primary thematic elements, notably instincts and anxiety. This approach ensures a deep and thorough understanding of the material. Furthermore, the research delineates two core content areas within Freud's theoretical framework: personality structure and personality levels. These delineations serve to deepen our understanding of the interplay between psychoanalytic theory and cinematic narrative, offering valuable insights into the rich tapestry of human experience depicted on the silver screen. The division of research results into descriptive and inferential parts adds another layer of depth. Based on this, the meaning units, which represent the primary scenes featuring the main characters, account for 18.42 minutes (72.52%) of the entire film in Rope, 49.59 minutes (49.45%) in Psycho, and 102.08 minutes (79.75%) in Vertigo. Therefore, the main character's presence as a meaning unit is most prominent in the film Vertigo. In short, this includes introducing main characters and analyzing how often they appear in the film, which helps analyze the content. The main themes found in analyzing these films are instincts, including themes of life and death, and anxiety, which includes real, emotional, and moral aspects. By incorporating these diverse elements, the research provides a holistic view of the psychological underpinnings in Hitchcock's works, offering a profound understanding of the characters' motivations and the films' overarching themes.

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