scholarly journals Managing Moholy : László Moholy-Nagy's photograms in the collections of the Art Institute of Chicago and George Eastman House

2021 ◽  
Author(s):  
D. Anne Maryanski
Keyword(s):  
Detailed Analysis ◽  
Storage Conditions ◽  
Experimental Techniques ◽  
Collections Management ◽  
Policies And Procedures ◽  
Unique Nature ◽  
Entire Career ◽  
Long Term Preservation

The Art Institute of Chicago (AIC) and George Eastman House International Museum of Photography and Film (GEH) have acquired substantial collections of László Moholy-Nagy's work, spanning his entire career. Using four photograms by Moholy-Nagy, two from each institution, as representative examples, this thesis examines how the AIC and GEH have dealt with his work through an examination of the acquisition, exhibition, publication, preservation, and conservation of his photographs. The unique nature of Moholy-Nagy's photograms, coupled with the myriad experimental techniques he employed in their production, has necessitated that the AIC and GEH establish policies and procedures for the care and long-term preservation of photographic objects of this nature, through the development and implementation of exhibition and loan standards as well as highly monitored storage conditions. This thesis includes an overview of the museums, a detailed analysis of each photogram, and a discussion of the collections management concerns that these objects raise.

scholarly journals Managing Moholy : László Moholy-Nagy's photograms in the collections of the Art Institute of Chicago and George Eastman House

2021 ◽  
Author(s):  
D. Anne Maryanski
Keyword(s):  
Detailed Analysis ◽  
Storage Conditions ◽  
Experimental Techniques ◽  
Collections Management ◽  
Policies And Procedures ◽  
Unique Nature ◽  
Entire Career ◽  
Long Term Preservation

The Art Institute of Chicago (AIC) and George Eastman House International Museum of Photography and Film (GEH) have acquired substantial collections of László Moholy-Nagy's work, spanning his entire career. Using four photograms by Moholy-Nagy, two from each institution, as representative examples, this thesis examines how the AIC and GEH have dealt with his work through an examination of the acquisition, exhibition, publication, preservation, and conservation of his photographs. The unique nature of Moholy-Nagy's photograms, coupled with the myriad experimental techniques he employed in their production, has necessitated that the AIC and GEH establish policies and procedures for the care and long-term preservation of photographic objects of this nature, through the development and implementation of exhibition and loan standards as well as highly monitored storage conditions. This thesis includes an overview of the museums, a detailed analysis of each photogram, and a discussion of the collections management concerns that these objects raise.

scholarly journals Preservation of Azotobacter chroococcum vegetative cells in dry polymers

2014 ◽  
Vol 20 (2) ◽  
pp. 201 ◽  
Author(s):  
Daniel Rojas-Tapias ◽  
Oriana Ortega Sierra ◽  
Diego Rivera Botía ◽  
Ruth Bonilla
Keyword(s):  
Storage Conditions ◽  
Azotobacter Chroococcum ◽  
Bacterial Degradation ◽  
Protective Agent ◽  
Degradation Rates ◽  
Different Temperatures ◽  
And Storage ◽  
Temperature Time ◽  
Long Term Preservation

We studied the preservation of Azotobacter chroococcum C26 using three dry polymers: carrageenin, sodium alginate, and HPMC, using a method of accelerated degradation. Bacterial viability, as response variable, was measured at three temperatures in four different times, which was followed by calculation of bacterial degradation rates. Results showed that temperature, time of storage, and protective agent influenced both viability and degradation rates (P;lt;0.05). We observed, using the Arrhenius thermodynamic model, that the use of polymers increased the activation energy of bacterial degradation compared to control. We obtained thermodynamic models for each polymer, based on the Arrhenius equation, which predicted the required time for thermal degradation of the cells at different temperatures. Analysis of the models showed that carrageenin was the best polymer to preserve A. chroococcum C26 since ~ 900 days are required at 4 ºC to reduce its viability in two log units. We conclude, therefore, that long-term preservation of A. chroococcum C26 using dry polymers is suitable under adequate preservation and storage conditions.

scholarly journals Adapting to born-digital photographs: a case study of the Canadian Centre for Architecture

2021 ◽  
Author(s):  
Saba Moghtader
Keyword(s):  
Best Practices ◽  
Collections Management ◽  
Digital Photograph ◽  
Digital Photographs ◽  
Steady Growth ◽  
Practical Project ◽  
Photography Collections ◽  
Long Term Preservation

As born-digital photography collections grow, so grows the need for a more defined set of guidelines on the best practices of how to acquire, describe and preserve said photographs. This paper is the result of a practical project conducted at the Canadian Centre for Architecture. The project uses the CCA as a case study and asks the question: how is the Centre adapting to the collection of born-digital photographs? During a six-month residency, the author, developed and implemented a description guideline, workflow, and donor guideline for the collection and cataloguing of born-digital photographs. These guidelines are the result of the steady growth in the volume of born-digital photographs coupled with the need for ensuring long term preservation for existing and potential collections. The aim of this paper is to help improve the usefulness and clarity of the guidelines. The case study and paper was conducted in conjunction with the requirements of Film and Photography Preservation and Collections Management (FPPCM) master’s at Ryerson University. The title of the guideline is Guidelines for Describing Born-Digital Photograph.

The impact of high-density polyethylene materials on microbiological purity in the process of storing and preserving textiles

2016 ◽  
Vol 87 (17) ◽  
pp. 2076-2088 ◽  
Author(s):  
Tomasz Lech
Keyword(s):  
High Density Polyethylene ◽  
Good Condition ◽  
Natural Fibers ◽  
Storage Conditions ◽  
High Density ◽  
Cellulolytic Enzymes ◽  
Microbiological Analysis ◽  
The Impact ◽  
Long Term Preservation

Textiles made of natural fibers, both contemporary and historical, are at constant risk of degradation caused by, among others, microbial enzymatic activity. Fungi, bacteria, or actinomycetes are capable of producing proteolytic and cellulolytic enzymes, enabling microbial growth on textiles and leading to their decay. Ensuring proper storage conditions, including the usage of protective materials, allows long-term preservation of historical textiles in a good condition. These studies involved a broad microbiological analysis in order to verify whether high-density polyethylene (HDPE) materials can protect historical textiles during their storage. The results demonstrate interesting differences in microbial counts between washed textiles stored without HDPE covers and those stored in such covers; the latter presented considerably higher counts of microorganisms. However, when textiles had previously been sterilized, HDPE covers helped maintain appropriate microbiological purity. A considerable portion of historical textile collections, particularly exceptional silk liturgical vestments or burial garments, are kept by church institutions and stored in sacristies, treasuries, or other church rooms. The specificity of these places, both cultural and related to the age of the buildings themselves, makes them exceptional environments for storing textiles. To date, these places have rarely been researched, particularly in microbiological aspects. The analysis recounted below encompasses qualitative and quantitative assessment of fungi and bacteria present in the air of the treasury of the Wawel Royal Cathedral in Krakow, Poland, as well as the analysis of their destructive potential.

scholarly journals Effect of pressure at primary drying of freeze-drying mouse sperm reproduction ability and preservation potential

Reproduction ◽  
2007 ◽  
Vol 133 (4) ◽  
pp. 841-846 ◽  
Author(s):  
Yosuke Kawase ◽  
Toshio Hani ◽  
Nobuo Kamada ◽  
Kou-ichi Jishage ◽  
Hiroshi Suzuki
Keyword(s):  
Freeze Drying ◽  
Developmental Rate ◽  
Storage Conditions ◽  
Blastocyst Stage ◽  
Influential Factor ◽  
Effect Of Pressure ◽  
Freeze Dried ◽  
Preservation Potential ◽  
Long Term Preservation

Freeze-dried spermatozoa are capable of participating in normal embryonic development after injection into oocytes and thus useful for the maintenance of genetic materials. We recently reported that long-term preservation of freeze-dried mouse spermatozoa by conventional methods requires temperatures lower than −80 °C. Successful permanent preservation of mouse spermatozoa at much higher temperatures requires thorough investigation of the freeze-drying procedure. Thus, we examined the relationship between the pressure at primary drying and the preservation potential of freeze-dried mouse spermatozoa. Three different primary drying pressures were applied to evaluate the effect of pressure on freeze-dried spermatozoa under varying storage conditions and the rate of development measured. The developmental rate of embryos to the blastocyst stage from intracytoplasmic sperm injection by freeze-dried spermatozoa at pressures of 0.04, 0.37, and 1.03 mbar without storage were 59% (337/576), 71% (132/187), and 33% (99/302) respectively. When stored at 4 °C for 6 months, the rate was 13% (48/367), 50% (73/145), and 36% (66/182) respectively. These results show that primary drying pressure is an influential factor in the long-term preservation of freeze-dried mouse spermatozoa.

scholarly journals Adapting to born-digital photographs: a case study of the Canadian Centre for Architecture

2021 ◽  
Author(s):  
Saba Moghtader
Keyword(s):  
Best Practices ◽  
Collections Management ◽  
Digital Photograph ◽  
Digital Photographs ◽  
Steady Growth ◽  
Practical Project ◽  
Photography Collections ◽  
Long Term Preservation

As born-digital photography collections grow, so grows the need for a more defined set of guidelines on the best practices of how to acquire, describe and preserve said photographs. This paper is the result of a practical project conducted at the Canadian Centre for Architecture. The project uses the CCA as a case study and asks the question: how is the Centre adapting to the collection of born-digital photographs? During a six-month residency, the author, developed and implemented a description guideline, workflow, and donor guideline for the collection and cataloguing of born-digital photographs. These guidelines are the result of the steady growth in the volume of born-digital photographs coupled with the need for ensuring long term preservation for existing and potential collections. The aim of this paper is to help improve the usefulness and clarity of the guidelines. The case study and paper was conducted in conjunction with the requirements of Film and Photography Preservation and Collections Management (FPPCM) master’s at Ryerson University. The title of the guideline is Guidelines for Describing Born-Digital Photograph.

Prosodic Impairment Associated With Traumatic Brain Injury

2009 ◽  
Vol 19 (3) ◽  
pp. 97-102
Author(s):  
Billy Irwin
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Detailed Analysis ◽  
Acoustic Characteristics ◽  
Individual Variations

Abstract Purpose: This article discusses impaired prosody production subsequent to traumatic brain injury (TBI). Prosody may affect naturalness and intelligibility of speech significantly, often for the long term, and TBI may result in a variety of impairments. Method: Intonation, rate, and stress production are discussed in terms of the perceptual, physiological, and acoustic characteristics associated with TBI. Results and Conclusions: All aspects of prosodic production are susceptible to the effects of damage resulting from TBI. There are commonly associated prosodic impairments; however, individual variations in specific aspects of prosody require detailed analysis.

Problems of treatment of primary openangle glaucoma in combination with thrombosis of the central retinal vein

GlaucomaNews ◽  
2020 ◽  
pp. 65-69
Author(s):  
T.E. Lipatkina ◽  
◽  
Е.V. Karlova ◽  
A.V. Zolotarev ◽  
◽  
...  
Keyword(s):  
Macular Edema ◽  
Primary Open Angle Glaucoma ◽  
Antihypertensive Drugs ◽  
Open Angle Glaucoma ◽  
Vascular Wall ◽  
Open Angle ◽  
Retinal Edema ◽  
Long Term Preservation ◽  
Central Retinal Vein

Patients with primary open-angle glaucoma (POAG) and ophthalmic hypertension have an increased likelihood of developing occlusions (thrombosis) of the central retinal vein. Different groups of antihypertensive drugs differ in their mechanism of action and may affect concomitant ocular pathology, in particular, retinal edema, which occurs, for example, in occlusion of the central retinal vein. Used in most patients with glaucoma, prostaglandin analogs can contribute to the long-term preservation of macular edema due to the effect on the permeability of the vascular wall. Preparations of other pharmacological groups, reducing the production of aqueous humor, on the contrary, may contribute to its regression. Therefore, the question of choosing a drug for antihypertensive therapy in patients with primary open-angle glaucoma and concomitant macular edema is relevant and is for further study.

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