Relevant bibliographies by topics / College Corner

Academic literature on the topic 'College Corner'

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Published: 25 July 2024
Last updated: 26 July 2024

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Journal articles on the topic "College Corner"

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Hawthorne, Elizabeth K. "Community college corner." ACM SIGCSE Bulletin 41, no. 4 (January 18, 2010): 16–17. http://dx.doi.org/10.1145/1709424.1709432.

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Hawthorne, Elizabeth K. "Community college corner." ACM SIGCSE Bulletin 40, no. 4 (November 30, 2008): 20–21. http://dx.doi.org/10.1145/1473195.1473205.

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Hawthorne, Elizabeth K. "Community college corner." ACM SIGCSE Bulletin 41, no. 2 (June 25, 2009): 76–77. http://dx.doi.org/10.1145/1595453.1595472.

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Petersen, Drew, Kim Pinske, and Trent Greener. "College Coaches Corner—CrossFit." Strength and Conditioning Journal 36, no. 2 (April 2014): 56–58. http://dx.doi.org/10.1519/ssc.0000000000000037.

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Pinske, Kim, Trent Greener, and Andrew Peterson. "College Coaches Corner-Speed Training." Strength and Conditioning Journal 34, no. 5 (October 2012): 96–98. http://dx.doi.org/10.1519/ssc.0b013e31826d8fa2.

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Plisk, Steven Scott. "COLLEGE COACHES' CORNER: Training Smart." STRENGTH AND CONDITIONING JOURNAL 18, no. 3 (1996): 22. http://dx.doi.org/10.1519/1073-6840(1996)018<0022:ts>2.3.co;2.

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Szymanski, David J., and Gregory A. Fredrick. "COLLEGE COACHES CORNER: College Baseball/Softball Periodized Torso Program." Strength and Conditioning Journal 21, no. 4 (1999): 42. http://dx.doi.org/10.1519/1533-4295(1999)021<0042:cbsptp>2.0.co;2.

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Tang, Cara. "COMMUNITY COLLEGE CORNER: ACM CCECC activities." ACM Inroads 12, no. 2 (June 2021): 14–16. http://dx.doi.org/10.1145/3462646.

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Radcliffe, James C. "COLLEGE COACHES' CORNER: A Power Perspective." STRENGTH AND CONDITIONING JOURNAL 16, no. 5 (1994): 46. http://dx.doi.org/10.1519/1073-6840(1994)016<0046:app>2.3.co;2.

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Sare, Laura. "Editor's Corner." DttP: Documents to the People 48, no. 1 (April 16, 2020): 2. http://dx.doi.org/10.5860/dttp.v48i1.7330.

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Howdy everyone! It is 2020 and Census Day is April 1, 2020. There are many changes with the Census this year. Census 2020 will be the first census that people can respond to online. Sometimes people are not sure where to be counted (for example people in shelters and college students) and the Census Bureau has been working on this issue since 2015 (https://www.census.gov/programs-surveys/decennial-census/2020-census/about/residence-rule.html). For more information check out the 2020 Census Operational Plan—https://www.census.gov/programs-surveys/decennial-census/2020-census/planning-management/planning-docs/operational-plan.html.
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Dissertations / Theses on the topic "College Corner"

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Musselmann, Kurt. "Developing culture conditions to study keratocyte phenotypes in vitro." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001726.

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Etheredge, LaTia Shaquan. "The Effect of Growth Factors on the Corneal Stroma Extracellular Matrix Production by Keratocytes." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003238.

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Vrana, Nihal Engin. "Collagen-based Scaffolds For Cornea Tissue Engineering." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607540/index.pdf.

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In this study, collagen based scaffolds were prepared for cornea tissue engineering. Three different cell carriers (rat tail collagen foam, insoluble collagen foam and patterned collagen film) were produced using two different collagen sources. Scaffolds were designed to mimic the unique topographical features of the corneal stroma. A novel crosslinking method was developed to achieve constant foam thickness. All scaffolds were tested with the primary cells of the native corneal stroma, human keratocytes. Although both foams promoted cell growth and penetration, rat tail foams were found to be superior for keratocyte proliferation. Their degradation rates were high enough but did not compromise their structural integrity during testing. Transparency studies with the foams revealed a progressive improvement. Collagen films degraded significantly over a one month period
however, the presence of cells increased the tensile strength of the films over a 21 day period to close to that of the native cornea and compensated for the loss of strength due to degradation. The micropatterned films proved to have higher transparency than the unpatterned scaffolds. In this study, it was possible to prepare collagen based micropatterned scaffolds using a silicon wafer and then a silicone template, successively, starting from original designs. The resultant collagen films were able to control cell growth through contact guidance, restricted cells and secreted-ECM within the pattern grooves, resulting in a higher transparency in comparison to unpatterned films. Thus, the tissue engineered constructs revealed a significant potential for use as total artificial corneal substitutes.
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Ibrahim, Jamal. "Hydroxylysine glycosides of corneal collagen." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:2442f75c-6a1c-4575-98b0-a4475a3df1f2.

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These findings are discussed with respect to the possible role of hydroxylysine glycosides in limiting collagen fibril diameter. Comparisons of the amino acid sequences around the seven glycoside sites however gave no clues as to what makes some lysyl residues more susceptible to modification than others. The possible reasons for the high extent of lysyl modification in the cornea are also discussed.
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Song, Yihui. "Development of a printable collagen bioink for treatment of corneal disease." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/27218.

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Corneal disease is one of the major causes of blindness. Ocular glues are a common initial treatment for corneal wounds but, in some severe cases, cornea transplantation will be required. However, gluing only offers temporary emergency management, and corneal transplantation is limited by donor shortage. Corneal bioengineering potentially offers an alternative pathway to treat severe corneal injuries. The major challenge in corneal bioengineering is balancing the combined requirements of the flexible manufacturing process whilst providing adequate properties to create a customisable artificial corneal that can mimic the human cornea. The main aim of this study is to develop a pure collagen I-based bioink: Firstly, to explore the feasibility of direct printing into a corneal wound using a handheld device and secondly for the printing of an artificial cornea on a tabletop 3D printer. The collagen bioink were developed and the mechanical and optical properties of the bioink were characterised in this study. Cell compatibility is important for the bioink. The collagen hydrogels with various collagen concentrations were tested with major corneal cells in this study. The potential applications of the collagen bioink in corneal bioengineering, including wound filling/sealing experiments and 3D printing of a cell-laden cornea shaped structure were also explored in this thesis. In conclusion, the collagen bioink developed showed the potential of a corneal filler/sealant for corneal wound healing, having the comparable filling/sealing ability, better transparency, and shorter crosslinking time compared to currently available collagen based corneal filler/sealant. The results of this thesis also constitute the basis for 3D printing the customisable artificial cornea with incorporated corneal cells to shorten the healing time.
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Acun, Aylin. "Construction Of A Collagen-based, Split Thickness Cornea Substitute." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615340/index.pdf.

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Cornea is the transparent outermost layer of the eye. It is a thin (500 µ
m) multilayer tissue which performes around 75% of the total refraction in the eye. It also protects the inner layers against any type of damage. Since it is avascular, the three cellular layers of cornea always need transport of nutrients and other materials in and out of the tissue via diffusion. Any change in shape, transparency or thickness of cornea, or physical damages and infections, may cause serious defects. The conventional methods are satisfactory in the treatment of mild injuries but severe cases require the substitution of the tissue with an equivalent. Keratoprosthesis and donor corneas that are used as replacements do not completely meet requirements. Tissue engineering can be an alternative method for preparing a biocompatible and stable cornea equivalent. The ability to choose from a variety of materials and the ability to incorporate bioactive agents allow the researchers to tailor make the construct. The structure needs to be seeded with the patient&rsquo
s own cells and cultured in vitro to yield an optimal corneal replacement. In this study a novel, split thickness cornea replacement is proposed to substitute the two upper cellular layers (epithelium and stroma) of the native cornea. The design includes a chondroitin sulfate impregnated collagen type I (isolated from rat tail) foam (CSXLF) produced by lyophilization carrying electrospun fibers of the same polymer collected directly on top of the foam, forming the bilayer structure (Fo-Fi). The fiber layer was intended to separate the epithelium and the stroma of the reconstructed cornea yet to allow material transfer in between. The foam layer (bottom) was crosslinked by N-ethyl-N-[3-dimethylaminopropyl] carbodiimide (EDC), and N-hydroxy succinimide and after fiber deposition the bilayer was further stabilized with physical crosslinking (DHT method). The physical characterization of the foam showed that their pore sizes (10-200 µ
m) and porosities (around 70%) were well within the desired range for typical tissue engineering applications. The cell free wet thicknesses of both single and bilayer constructs were close to that of the native stroma and light transmittance through these scaffolds was quite high (around 82% in the 500-700 nm range). The scaffolds were also tested for their stability and shown to be suitable for in vitro testing. In vitro studies were performed using retinal pigment epithelial cells (RPE, D407 cell line) and isolated human corneal keratocytes (HK) to reconstruct the epithelium and the stroma, respectively. Three types of constructs were prepared
only HK seeded Fo-Fi constructs, RPE-HK seeded CSXLFs, and RPE-HK seeded Fo-Fi constructs. All were shown to support cell attachment and promoted cell proliferation as was shown by the cells that covered the inner and outer spaces of the scaffolds. The fiber layer prevented the mixing of the two cell types, without hindering material exchange between them. Moreover, when co-cultured for 14 days, the keratocytes started to deposit collagen type I, a specific marker of these cells. In contrast, ECM deposition could not be observed in the single type cell seeded samples. The co-cultured bilayer construct was tested for suturability at the end of 31 days of in vitro incubation and it was shown that it could be successfully sutured without any major tears. Under the light of these results it was concluded that both the single layer and the bilayer constructs show promise for use as split thickness cornea replacements.
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Giacomin, Natalia Torres. "Análise da eficácia e segurança do crosslinking corneano em pacientes com ceratocone avançado." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5149/tde-09042018-100655/.

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OBEJTIVOS: Analisar a segurança e eficácia da cirurgia de crosslinking (CXL) de córnea em pacientes com ceratocone em estágios avançados após um seguimento de 4 anos. MÉTODOS: Trata-se de um estudo retrospectivo de pacientes com ceratocone avançado em progressão (Estágio 3 e 4 da classificação de Amsler-Krumeich) que foram submetidos a cirurgia de CXL seguindo o protocolo padrão. Os parâmetros examinados foram acuidade visual com (AVCC) e sem (AVSC) correção, valores ceratométricos (média, plana, curva e apical), paquimetria, e contagem de células endoteliais no préoperatório e após 12, 24 e 48 meses do procedimento. RESULTADOS: Este estudo abrange quarenta olhos de 40 pacientes que foram submetidos a cirurgia de CXL. A média de idade foi 22,5 anos (Intervalo:15 a 37 anos). Tanto a AVSC quanto a AVCC permaneceram estáveis durante o período de seguimento, sem mudanças estatisticamente significativas. Apesar de todos os valores ceratométricos sofrerem uma leve diminuição, apenas a ceratometria apical atingiu uma mudança com significado estatístico (P=0,037) após 4 anos de seguimento. Uma redução significativa da espessura corneana foi também observada (paquimetria ultrassônica era de 388 ± 49 e passou para 379 ± 48 ?m, P < 0,0001; paquimetria através de tomografia de imagem em fenda era de 362 ± 48 e foi para 353 ± 51 um, P < 0,0001); embora essa diferença não seja clinicamente significativa. A contagem de células endoteliais não sofreu alterações significativas durante o seguimento. A taxa de falha do tratamento foi de 5% (dois pacientes) durante o seguimento. CONCLUSA?O: A cirurgia de CXL corneano em pacientes com ceratocone avançado se mostrou segura e capaz de manter os parâmetros visuais e topográficos pelo menos durante 4 anos
PURPOSE: To analyze the safety and efficacy of standard corneal collagen crosslinking (CXL) in advanced cases of progressive keratoconus (KC) after four years of follow-up. METHODS: A retrospective case series of patients with advanced progressive KC (stage 3 and 4 of Amsler-Krumeich classification) underwent standard CXL treatment. The parameters examined were changes in uncorrected visual acuity (UDVA), corrected visual acuity (CDVA), keratometry values (mean K, flattest K, steepest K, and apical K), pachymetry, and endothelial cell count at the baseline and at 12-, 24- and 48-months postoperatively. RESULTS: Forty eyes of 40 patients were enrolled into the study. The mean patient age was 22.5 years (range: 15 to 37 years). Both mean UCVA and CDVA remained stable during the time points; no statistically significant change was noted. Although a slightly reduction was observed in all keratometric readings, a statistically significant reduction was only reached in the apical K (p=0.037) at four years after CXL. A significant reduction in the pachymetry was also found (from 388±49 to 379±48 um, P < 0,0001 and from 362±48 to 353±51 um, P < 0,0001, ultrasonic and slit-scanning readings, respectively) ; however this change is not likely clinically meaningful. Endothelial cell count was not significantly modified at the end of the study. Treatment failure or progression was noted in two patients (5%) over the followup period. CONCLUSION: Standard CXL treatment seems to be safe and able to stabilize both visual acuity and topographic parameters at four-year follow-up in advanced keratoconic eyes
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Ghannad, Mona. "Design and Synthesis of Collagen-binding Anti-microbial Proteins." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19981.

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The Herpes simplex virus (HSV) is a virus that commonly infects the skin, and mucous membrane of the mouth, genitalia, and the eye. HSV-1 is the strain that is most commonly associated with corneal infections, and it is the most frequent cause of corneal blindness in North America [1]. Currently no cure is available, and many limitations are characterized by the currently available synthetic antiviral drugs, which suggest the need for other potential drug alternatives and delivery strategies. Anti-microbial peptides are naturally occurring peptides that are potent killers of a broad range of micro-organisms, including bacteria, fungi, and viruses [2]. AMPs are known to be a key component of the innate immune response at the human ocular surface. The human cathelicidin-derived AMP, LL-37, expressed in human corneal epithelial cells provides a wide range of protection against viral pathogens such as HSV-1 [3]. My thesis research addressed the design and recombinant production of hybrid AMP sequences containing LL-37 with the potential ability to form chemical or physical associations with a Collagen scaffold material, such as those used in current artificial cornea constructs to address the need for alternative anti-viral drugs. Three fusion proteins were tested, and compared for feasible design anti-microbial peptide expression and purification in E. coli. It was illustrated that the thioredoxin and SUMO fusion systems are good candidates for successful recombinant production of active designed peptides. The point-mutated LL-37 sequence was successfully expressed and purified using the thioredoxin fusion system. It was demonstrated that this modified LL-37 was effective against HSV-1 infection. The SUMO system was used to express the bio-functional LL-37 containing a collagen-binding sequence. Further work is required to address issues regarding recombinant AMP production, such as increasing enzymatic cleavage efficacy, and minimizing proteolytic degradation or modification.
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Lappin, Cory James. "Investigating the Role of Shroom3 in Collagen Regulation and Development of the Corneal Stroma." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523921114811659.

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Hemmavanh, Chinda. "Regulatory Roles of FACIT Collagens XII and XIV in Cornea Stromal and Endothelial Development and Function." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5038.

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Purpose: Corneal transparency depends upon the precise organization of corneal stromal extracellular matrix and corneal endothelial function. Stromal structure and extracellular matrix organization is responsible for proper refraction of light into the eye. The corneal endothelium is responsible for pumping excess fluid out of the cornea, effectively maintaining corneal hydration and thickness. Corneal transplantation is the current form of treatment for corneal endothelial and stromal dystrophies. The mechanisms controlling stromal collagen fibril packing and organization into orthogonal layers as well as maturation of the endothelium into a fully functioning cellular layer are unknown. Collagens XII and XIV, fibril associated collagens with interrupted triple helices (FACIT), have been implicated in matrix-matrix interactions regulating structure, cell behavior, and cell-matrix interactions. The overall aim is to determine the role of collagens XII and XIV in fibril assembly, fibril packing, lamellar assembly, stromal organization, corneal thickness, and endothelial maturation. The general hypothesis is that collagens XII and XIV regulate cornea stromal matrix development and structure, endothelial development, and corneal function. This dissertation assesses three specific hypotheses: 1) Collagen XIV regulates lateral fibril growth and fibril packing through fibrillar surface interactions; 2) Collagen XII regulates fibril packing, lamellar assembly, stromal organization, corneal thickness, and therefore, corneal function; and 3) FACIT collagens in the specialized posterior stroma regulate the acquisition of function in the corneal endothelium. Materials and Methods: The temporal and spatial expression patterns of collagens XII and XIV were determined in the murine cornea using quantitative PCR, semi-quantitative immuno-blots and immuno-localization approaches. To determine the regulatory roles of collagens XII and XIV in stromal and endothelial development, mouse models null for collagens XII or XIV were. This was coupled with ultrastructural and morphometric analyses of fibril assembly, fibril packing, lamellar organization, and endothelial maturation. The roles of collagens XII and XIV in corneal structure were determined using measurements of corneal thickness at postnatal day (P) 30 and P60. Results: Collagen XIV had a dynamic expression pattern in wild type (WT) corneal development. Corneas at P4 expressed the highest amount of collagen XIV with a sharp reduction by P10. Collagen XIV localized in the full thickness of the stroma at P4 and P14. At P30 and P90 there was less immuno-reactivity for collagen XIV in the WT stroma. The collagen XIV null stromas contained larger diameter fibrils when compared to P30 WT stromas. The null stromas also exhibited irregular spacing of fibrils. In the absence of collagen XIV there was an abnormal increase in corneal thickness. Unlike collagen XIV, collagen XII localized homogenously throughout the WT corneal stroma from P4 to P90. Collagen XII content was relatively constant in the cornea from P4 to P90. The collagen XII P30 null stromas contained areas of increased fibril density and disruption of lamellar organization. Corneal thickness increased in the absence of collagen XII at P60. Corneas deficient in Col12a1-/- and/or Col14a1-/- exhibited a delay in maturation. The null corneal endothelia retained vacuoles seen only in the immature WT P4 cornea. The P30 Col12a1-/- and Col14a1-/- endothelia had patchy localization of ZO-1 similar to that of an immature endothelium. There was an abnormal increase in thickness at P30 in the absence of collagens XII and XIV suggesting an increase in stromal hydration. Conclusions: Collagen XIV regulates fibril assembly, and regular fibril packing in early stromal development. Collagen XII regulates fibril packing, lamellar assembly, stromal organization, and influences the keratocyte network. Both collagens XII and XIV regulate endothelial maturation and acquisition of function through interactions between the stroma and underlying endothelium. Understanding the mechanisms behind stromal organization and endothelial maturation will improve treatment of stromal and endothelial dystrophies, as well as other diseases that involve extracellular matrix-cell interactions mediated by FACIT collagens.
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Books on the topic "College Corner"

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Kanar, Carol C. The reader's corner: Expanding perspectives through reading. 4th ed. Boston, Mass: Wadsworth Cengage Learning, 2011.

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The reader's corner: Essays for developing readers. New York: Houghton Mifflin, 2001.

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The reader's corner: Expanding perpectives through reading. 3rd ed. Boston, MA: Houghton Mifflin Co., 2007.

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Stanley-Molen, Lorena. A history of College Corner School Dist. No. 12, Lincoln County, Oklahoma, 1893-1941 and childhood remembrances. Fresno, CA: Lorena Stanley-Molen, 2006.

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Ottawa, University of. Souvenir of the laying of the corner-stone of the new Arts Building, University of Ottawa, Canada. [Ottawa?: s.n., 1996.

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Darby, Patrick. "The houses in-between": A history of the houses on the north side of Dulwich Common, between College Road and Gallery Road, ... "Corner House". London: The Dulwich Society, 2000.

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Divers, David. An Archaeological watching brief at Lambeth College on the corner of Queen Elizabeth Street and Tower Bridge Road, London Borough of Southwark, SE1: NGR: TQ 3355 8001 Site Code: QET 99. London: Pre-Construct Archaeology, 1999.

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Rose, Blue, ed. Cornel West. Chicago, Ill: Raintree, 2006.

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Hillel, Cornell. Cornell Hillel: The Yudowitz Center for Jewish Campus Life. Ithaca, New York: Cornell Hillel, 2007.

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Rich, Justin. Cutting corners: A complete college handbook for getting A's the easy way. United States]: Soundhouse Publishing, 2012.

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Book chapters on the topic "College Corner"

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Guerra, Gustavo, Fernando Faria Correia, Daniel G. Dawson, Lia Florim Patrão, Ivan Dias Ferreira, and Renato Ambrósio Junior. "Diagnostic Tools for Ectatic Corneal Diseases." In Corneal Collagen Cross Linking, 1–21. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_1.

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Sinjab, Mazen M. "Patterns and Classifications in Ectatic Corneal Diseases." In Corneal Collagen Cross Linking, 23–62. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_2.

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McQuaid, Rebecca, Michael Mrochen, Brian Vohnsen, Eberhard Spoerl, Sabine Kling, and Cynthia J. Roberts. "Fundamentals of Corneal Cross Linking." In Corneal Collagen Cross Linking, 63–86. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_3.

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Cummings, Arthur B., Mazen M. Sinjab, Kathryn M. Hatch, Jonathan Talamo, Bradley Randleman, Anastasios John Kanellopoulos, George Asimellis, et al. "Combined Corneal Cross Linking and Other Procedures: Indications and Application Models." In Corneal Collagen Cross Linking, 87–165. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_4.

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Frucht-Pery, Joseph, and Denise Wajnsztajn. "Clinical Application and Decision-making." In Corneal Collagen Cross Linking, 167–88. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_5.

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Vinciguerra, Paolo, Fabrizio I. Camesasca, Leonardo Mastropasqua, Elena Albè, Mario R. Romano, Vito Romano, Silvia Trazza, Manuela Lanzini, and Riccardo Vinciguerra. "Clinical Results of Corneal Collagen Cross-linking." In Corneal Collagen Cross Linking, 189–223. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_6.

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Stulting, R. Doyle. "Complications of Corneal Cross-linking." In Corneal Collagen Cross Linking, 225–28. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_7.

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Hamada, Samer, Ankur Barua, Aldo Caporossi, Antonio Villano, Orsola Caporossi, Romina Fasciani, and Elias Jarade. "Corneal Cross-linking in Children." In Corneal Collagen Cross Linking, 229–68. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_8.

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Myung, David, Edward E. Manche, David Tabibian, and Farhad Hafezi. "The Future of Corneal Cross-linking." In Corneal Collagen Cross Linking, 269–92. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39775-7_9.

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Pavelka, Margit, and Jürgen Roth. "Dense Connective Tissue: Collagen Bundles in the Cornea." In Functional Ultrastructure, 282–83. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-211-99390-3_145.

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Conference papers on the topic "College Corner"

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Currie, Brian, Haley Thoresen, Emma Palko, Blake Stubbins, Rosamiel Ries, Emmanuel Adedugbe, Jonathan Levy, Daniel Blake, and T. Andrew Nash. "REVISED BEDROCK TOPOGRAPHIC MAP FOR THE OXFORD AND COLLEGE CORNER QUADRANGLES, BUTLER AND PREBLE COUNTIES, OHIO." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323335.

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Stubbins, Blake, Brian Currie, Haley Thoresen, Emma Palko, Rosamiel Ries, Seth Swearingen, Emmanuel Adedugbe, et al. "BEDROCK-TOPOGRAPHY AND QUATERNARY DRIFT-THICKNESS MAPS OF THE OXFORD AND COLLEGE CORNER QUADRANGLES, BUTLER AND PREBLE COUNTIES, OHIO." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-340888.

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Rahimi, Abdolrasol, and Hamed Hatami-Marbini. "Hydration Effects on Tensile Properties of the Corneal Stroma." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14788.

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The mechanical behavior of the cornea is mainly governed by the microstructure and composition of the stroma. The stroma is a highly ordered extracellular matrix and constitutes about 90% of the corneal thickness. From the mechanics point of view, the corneal stroma can be considered as a polyelectrolyte gel which is composed of collagen fibrils embedded in an aqueous matrix. The collagen fibrils compose about 70% of cornea’s dry mass and are arranged in a regular lattice structure [2]. Previous studies have shown that while the collagen fibrils are primarily located parallel to the surface, they are not distributed uniformly in all directions and their preferred orientation is not same in different species. For example, collagen fibrils are almost equally distributed in the nasal-temporal and inferior-superior directions in healthy human corneas [4] and they are mainly aligned in the inferior-superior direction in bovine corneas[2]. The differences in the orientations of the collagen fibrils have seen to have important implications on the mechanical properties of the cornea. In addition to this observation, the relative distance between the collagen fibrils is expected to play a role in defining the mechanics of the tissue. It is well-documented that the proteoglycans bind collagen fibrils at regular sites and control their relative position. The main proteoglycan in the corneal stroma is decorin. Decorin is the simplest small leucine-rich proteoglycan with a single glycosaminoglycan side chain. Chondroitin sulfate, dermatan sulfate, and keratan sulfate are among the prevalent glycosaminoglycans found in the cornea. Under physiological conditions, these linear carbohydrate polymers are ionized and carry negative charges. Therefore, a hydrated gel is formed in the empty space between collagen fibrils by attracting water. It is known that the interaction of these negatively charged glycosaminoglycans with themselves and with the free ions contribute to the corneal swelling pressure and subsequently to its compressive stiffness. Nevertheless, their possible influence on the corneal tensile properties is yet to be determined. In this work, we experimentally characterized the tensile properties of the bovine corneal stroma in different bathing solutions. Furthermore, a quasi-linear viscoelastic (QLV) model was used to examine the effect of bathing fluids and corneal hydration on mechanical parameter of the cornea.
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Yilmaz, Emin, and Abhijit Nagchaudhuri. "Winning the ASEE 2006 Robotics Design Competition: Guiding Students to Success." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42258.

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Robotics Model Design Competition sponsored by the Two Year College Division (TYCD) of American Society for Engineering Education (ASEE) provides an avenue for freshman and sophomore student teams in two year as well as four year colleges and universities to participate in a creative engineering design project. Historically Black Colleges and University - Undergraduate Program (HBCU-UP) at National Science Foundation (NSF) have provided support for development of ACTION (Advanced Curriculum and Technology-based Instructional Opportunities Network) at UMES. The ACTION program promotes inquiry based active learning and research projects among undergraduate STEM (Science, Technology, Engineering and Mathematics) majors. Engineering, Technology, and Mathematics students responded enthusiastically when the authors proposed the idea of participating in the (ASEE) 2006 Robotic Model Design Competition at one of the American Society for Mechanical Engineers (ASME) student section meetings at UMES in the fall of 2005. (The authors serve as the advisors for ASME student section chapter at UMES). The student leader of the section quickly put together a team of five freshman and sophomore engineering, engineering technology and mathematics students to develop a proposal to UMES ACTION program. The authors supported the proposal development efforts. The proposal got funded and provided the resources for project execution and travel. A team of eleven freshmen and sophomore students from Engineering, Engineering Technology and Mathematics departments of University of Maryland Eastern Shore (UMES) participated in the American Society for Engineering Education’s (ASEE) 2006 Robotics Model Design Competition project. The event was sponsored by the Two-year College Division (TYCD) of ASEE and was open to freshman and sophomore student teams from two year as well as four year colleges and universities. The competition required teams to design and build an autonomous robot capable of delivering ping pong balls to each of four corner pockets located on an 8ft×8ft plywood track in a sequence. Each team was evaluated on the basis of a written report, an oral presentation, and scores obtained from the best two runs out of four runs on the racing track. Sixteen student teams across the nation participated in the event. UMES entered two teams in the competition who called themselves “Hawks 1” and “Hawks 4”. The student team “Hawks 1” won the competition. Video clips of both design projects as they executed the specified task at the 2006 ASEE Robotics Model Design Competition can be viewed at: http://www.umes.edu/asme/robots.htm. This paper describes the design projects “Hawks 1” and “Hawks 4” and its relevance to ABET learning outcomes.
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Jian, Jia-Hong, and Jia-Han Li. "Analysis of the Optical Properties Affected by the Nanostructures of the Corneal Stroma." In JSAP-OSA Joint Symposia. Washington, D.C.: Optica Publishing Group, 2019. http://dx.doi.org/10.1364/jsap.2019.18a_e208_5.

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Nanostructures of the collagen fibers play an important role in the corneal stroma. It influences the optical properties and transparency of the cornea. Several theoretical studies indicate that the cornea presents transparent because of the suitable diameter of collagen fibers, the arrangement between layers of the lamellar, and the refractive index of collagen fibers and fillers in the stroma [1]. The cornea is the transparent substance at the front of the eye. From the outside to the inside layers of the cornea are divided into epithelium, bowman’s layer, stroma, descemet’s membrane and endothelium. The thickness of the stroma is about 500 μm, which is about 90% of the total thickness of the cornea. It is made of 200 lamellar crystal layers which are stacked at an angle to each layers, and lamellar crystal consists type I and IV collagen fiber structure. In 1957, D. M. Mauurice proposed the theory of lattice arrangement in the fibrous structure of the corneal stroma layer [2].
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Ziegler, Kimberly A., and Thao D. Nguyen. "Modeling Study Incorporating Depth-Dependent Transverse Reinforcement due to Variation in Collagen Lamellae Interweaving in Corneal Tissue." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80771.

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The cornea is crucial for maintaining refraction and focusing ability of the eye. Small alterations in mechanical behavior of the tissue can cause changes in curvature and structure of the cornea, having adverse affects on visual acuity. Since the corneal stroma makes up 90% of corneal thickness and contains a majority of the tissue’s collagen content, it is considered the dominant contributor to the tissue’s mechanical strength and stiffness, which originates from a complex fiber-reinforced structure [1]. It has been shown that collagen lamellae (comprised of type I collagen fibrils) within a dense, proteoglycan-rich matrix, are highly interwoven in the anterior third of the cornea and the degree of interweaving decreases significantly through the thickness with relatively no interweaving observed in the posterior third [1]. The interwoven structure also varies within the plane of the tissue, gradually increasing from a planar arrangement in the central cornea to a highly interwoven arrangement near the limbus [2].
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Hatami-Marbini, Hamed, and Ebitimi Etebu. "Material Properties of Porcine Corneal Stroma in Unconfined Compression." In ASME 2013 2nd Global Congress on NanoEngineering for Medicine and Biology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/nemb2013-93113.

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The tensile properties of the cornea have been extensively studied while there are fewer studies on its compressive stiffness. The mechanical properties and structure of the cornea like many other connective tissues are derived from the function and properties of their extracellular matrix. The corneal extracellular matrix, stroma, is a polyelectrolyte gel composed of collagenous fibers embedded in an aqueous matrix. The cornea has two different functions: optical and mechanical. It is the main refractive component of the visual system and it is an effective barrier resisting the deformation caused by external and internal stresses. A necessary condition for corneal optical properties and transparency is the maintenance of a pseudo hexagonal arrangement of the collagen fibers inside the extracellular matrix. This regular arrangement is attributed to the interaction of collagen fibers with the proteoglycans. Under physiological conditions, the proteoglycans are ionized and form a hydrated gel in the empty space between the collagen fibrils by attracting the water and solutes. The interaction of the negatively fixed charges of the proteoglycans with themselves and with the free ions inside the interstitial fluid contributes to the corneal swelling pressure and subsequently to its compressive properties.
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Zhai, Yingnan, Jose A. Colmenarez, Valentina O. Mendoza, Pengfei Dong, Kenia Nunes, Donny Suh, and Linxia Gu. "Multiscale Mechanical Characterization of Cornea With AFM, SEM, and Uniaxial Tensile Test." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-113394.

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Abstract Cornea stiffness is associated with the progression of keratitis, aging, and glaucoma diseases. Knowing the microstructure and mechanical properties of the cornea is important for cornea tissue engineering. In this study, the microstructure and mechanical properties of the cornea from African green monkey eye were determined through multiscale methods with atomic force microscopy (AFM), scanning electron microscopy (SEM), and uniaxial tensile test. The cornea samples were dissected from the eyeball of African green monkeys. Cornea microstructures were inspected by SEM and optical microscopy for corneal stroma collagen lamellae. The aligned collagen lamellae have a width of approximately 3–6 μm. The stiffness map of cornea stroma with scanning regions of 10 × 10 μm2 and 5 × 5 μm2 was detected by AFM indentation test. The average Young’s modulus determined by AFM was 238.2 ± 32.7 kPa, which is on the same scale as the toe modulus (402.1 ± 176.7 kPa) of the stress-strain curve (linear region of 0%–5% strain) obtained from uniaxial tensile test. The heterogeneity of corneal stroma stiffness was presented in the stiffness map with line-shaped and band-shaped regions showing higher Young’s Modulus (around 250 kPa). The width of the band-shaped region is around 3.7 μm referring to collagen lamellae, while the adjacent arbitrarily shaped region with lower Young’s modulus (&lt; 70 kPa) on the stiffness map refers to keratocytes. Corresponding histograms show two-phase characteristics with one peak at a lower Young’s modulus range of 0.027–0.574 kPa, and another peak at a higher Young’s modulus in the range of 250.0–263.3 kPa. Monkey cornea shows heterogeneous and nonlinear mechanical properties over the scale of the tests.
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Hatami-Marbini, Hamed, and Peter M. Pinsky. "The Contribution of Proteoglycans on the Mechanical Properties of the Corneal Stroma." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13175.

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This paper studies the electrostatic contribution to the elasticity of corneal stroma using the Poisson-Boltzmann (PB) equation. Corneal stroma is a transparent connective tissue consisting of regularly organized collagen fibrils and proteoglycans (PGs) within an aqueous matrix. The cornea proteoglycan decorin is crucial for the regulation of collagen fibril diameters and their spacings. Decorin is the simplest small leucine-rich PG and is made up of a core protein and a glycosaminoglycan (GAG) side chain. Under physiological pH conditions, GAG molecules are completely ionized and become negatively charged. Their repulsive electrostatic interaction, mediated by free ions inside the bath, controls collagen interfibril spacings and contributes to corneal stiffness. In order to quantify the electrostatic contribution of GAGs to the elastic properties of the cornea, we define a unit cell in which GAGs are represented as cylindrical rods with a fixed charge density. The unit cell is deformed affinely and the electrical potential and free ion distribution inside the unit cell are obtained from the solution of the nonlinear PB equation. Having the potential and charge distribution, the changes in electrostatic free energy due to the deformation gives the electrostatic elastic moduli.
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Raoux, Clothilde, Margaux Schmeltz, Marion Bied, Maged Alnawaiseh, Uwe Hansen, Gaël Latour, and Marie-Claire Schanne-Klein. "Polarization-resolved SHG imaging of lamellar organization in keratoconic human corneas." In European Conference on Biomedical Optics. Washington, D.C.: Optica Publishing Group, 2021. http://dx.doi.org/10.1364/ecbo.2021.em3b.1.

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We implement polarization-resolved second harmonic generation microscopy to characterize the orientation distribution of collagen lamellae in human cornea. We evidence a less ordered distribution in keratoconic corneas, in agreement with their deteriorated mechanical behavior.
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Reports on the topic "College Corner"

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Christy, Ralph D., and Lin Fu, eds. Innovative Institutions to Accelerate Agroindustry Development in Asia. Asian Productivity Organization, December 2020. http://dx.doi.org/10.61145/pjdk3530.

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Agroindustries spur economic development, create jobs in rural and urban areas, increase food security, and reduce poverty. This report by Prof. Ralph D. Christy, Research Fellow Lin Fu, and their team at the Dyson School of Applied Economics and Management, Cornell College of Business, resulted from joint research with the APO examining the institutional basis for accelerating agroindustry development, government initiatives in Asia to achieve it, and mega trends shaping the sector now and in the future.
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Skoch, Bernard K. Proposed Automation and Software Management Studies for the Air War College Curriculum (Core and Advanced Study) Justification and Methodology. Fort Belvoir, VA: Defense Technical Information Center, May 1990. http://dx.doi.org/10.21236/ada241281.

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Scarpini, Celeste, Oyebola Okunogbe, and Fabrizio Santoro. The Promise and Limitations of Information Technology for Tax Mobilisation. Institute of Development Studies, February 2023. http://dx.doi.org/10.19088/ictd.2023.005.

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As digital technologies continue gaining momentum in Africa and lower-income countries, more and more tax authorities are adopting them to improve their core functions and collect revenue more efficiently. This paper reviews recent literature on using technology for tax administration. Technology has the potential to improve tax collection in three areas: identifying the tax base, monitoring compliance, and facilitating compliance. But even the most user-friendly technology will hardly function without basic infrastructure and a stable internet connection. The potential benefits of new technology are further hampered by resistance from taxpayers and collectors, an unsupportive regulatory environment and lack of strategy for adoption by institutions. We close by proposing reforms to ensure investments in new technology improve efficiency and revenue collection.
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Benison, Thomas, and Julia Talbot-Jones. Urban water security: Assessing the impacts of metering and pricing in Aotearoa New Zealand. Motu Economic and Public Policy Research, October 2023. http://dx.doi.org/10.29310/wp.2023.09.

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With urbanisation and climate change placing increasing pressure on water security around the world, demand-side mechanisms, such as metering and pricing, have emerged as core components of urban water management. Yet the impacts of metering and pricing on water production and consumption in Aotearoa New Zealand are not well understood. This constrains the ability of decision-makers to make targeted wellbeing improvements for the communities they serve. In this paper, we endeavour to estimate the impact of metering and pricing on urban water consumption in Aotearoa. We collect data on residential water production and consumption from 67 local councils and provide comparisons of water use across regions and over time, with particular attention given to Tauranga and Wellington. Our experience reveals the extent of the drinking water data gaps in urban areas in Aotearoa, raising questions about how evidence is being used to inform the design of urban water policy in Aotearoa and issues of public accountability.
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Løvschal, Mette, and Havananda Ombashi. Palynological Sampling in Western Jutland 2021-22: Anthea Work Package #2. Det Kgl. Bibliotek, 2023. http://dx.doi.org/10.7146/aulsps-e.478.

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A palynological sampling programme was carried out in three areas of Western Jutland in 2021-22. Our goal was to collect new sediment samples from archaeological excavations and peat deposits to reconstruct patterns in past heathland use and development. The location of the case areas was determined by the potential of the sites for combination with existing palynological data (Solsø Hede) and/or archaeological data (the Vejen area). At Solsø Hede, a pollen core was obtained near Solsø. At Vejen, two separate sediment collections took place. To the north of Vejen, in Gammelby Mose, peat sediments were collected. To the south of Vejen, at Kongehøj, 15 samples were collected from a Bronze Age house floor plan. The sampling programme formed part of the research project called ANTHEA (Løvschal 2021), which focuses on the deep history of anthropogenic heathlands. The project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 853356).
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Calomeni, Alyssa, Andrew McQueen, Ciera Kinley-Baird, and Gerard Clyde. Identification and preventative treatment of overwintering cyanobacteria in sediments : a literature review. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45063.

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Freshwaters can experience growths of toxin-producing cyanobacteria or harmful algal blooms (HABs). HAB-producing cyanobacteria can develop akinetes, which are thick-enveloped quiescent cells akin to seeds in vascular plants or quiescent colonies that overwinter in sediment. Overwintering cells produce viable “seed beds” for HAB resurgences and preventative treatments may diminish HAB intensity. The purpose of this literature review was to identify (1) environmental factors triggering germination and growth of overwintering cells, (2) sampling, identification, and enumeration methods, and (3) feasibility of preventative algaecide treatments. Conditions triggering akinete germination (light ≥0.5 μmol m-2s-1, temperature 22-27℃) differ from conditions triggering overwintering Microcystis growth (temperature 15-30℃, nutrients, mixing). Corers or dredges are used to collect surficial (0-2 cm) sediment layers containing overwintering cells. Identification and enumeration via microscopy are aided by dilution, sieving, or density separation of sediment. Grow-out studies simulate environmental conditions triggering cell growth and provide evidence of overwintering cell viability. Lines of evidence supporting algaecide efficacy for preventative treatments include (1) field studies demonstrating scalability and efficacy of algaecides against benthic algae, (2) data suggesting similar sensitivities of overwintering and planktonic Microcystis cells to a peroxide algaecide, and (3) a mesocosm study demonstrating a decrease in HAB severity following preventative treatments. This review informs data needs, monitoring techniques, and potential efficacy of algaecides for preventative treatments of overwintering cells.
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Anderson, Erin. Utilizing unmanned aircraft system (UAS) technology to collect early stand counts and to assess early plant vigor for use in early-season stress tolerance characterization of hybrid corn products. Ames (Iowa): Iowa State University, January 2018. http://dx.doi.org/10.31274/cc-20240624-1576.

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Jones. L51751 Evaluation of Low Hydrogen Welding Processes for Pipeline Construction in High Strength Steel. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), August 1996. http://dx.doi.org/10.55274/r0010220.

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As the use of higher strength and thicker walled pipe becomes more prevalent, the procedures that would normally guard against hydrogen cracking when welding with cellulosic electrodes, become less effective and it has become necessary to investigate the use of alternative low hydrogen consumables. Low hydrogen manual welding processes, suitable for pipeline girth welding, have been available for some time for the lower strength pipe grades, and latterly, for high strength pipelines (up to and including X80). Despite their availability and advantages in terms of reduced crack susceptibility, they have been rarely used in production up to the present time. Basic coated shielded metal arc (SMA) electrodes, suitable for vertical-down welding, are produced by some manufacturers at the strength level required for both the root welding and filling of pipeline girth welds. Self-shielded flux-cored wires (SSFCA) are also available for both root and fill welding, and in addition to the low hydrogen levels, these have the advantage of increased productivity. Both of these processes require different methods of deposition compared to welding using cellulosic electrodes, which necessitates specialized training of welders. It is thought that this, along with doubts concerning the reliability and speed of the processes in site conditions, has made contractors reluctant to adopt them. Furthermore, there was a dearth of independently produced information on the welding production performance of low hydrogen processes. The objectives of this work was to generate data to enable users to make an informed judgement regarding the practical application of low hydrogen processes. Furthermore, it was intended to develop improved root welding procedures, which had been recognized as being significant process limitation. A further objective of this work was to collect data to permit an informed choice when choosing low hydrogen welding processes for modern high-strength steel walled pipe. The performance of low hydrogen vertical down electrodes (L4VD) and solid and flux cored wires for welding X80 linepipe is assessed with regard to ease of welding, productivity and weldment mechanical properties in comparison to cellulosic electrodes.
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Brongers, Michiel, Michael Rosenfeld, Cara Macrory, and Gery Wilkowski. PR-276-214503-R01 Causes of Crack Failures in Pipelines and Research Gap Analysis. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), February 2022. http://dx.doi.org/10.55274/r0012212.

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This project details the methodologies used to collect and review crack failures, near misses and false positives, and how the available technologies are used in consideration of the CM-SRP pillars of crack (1) susceptibility, (2) inspection, (3) assessment and remediation, and (4) management. This project outcome enhances crack management by providing an independent review and understanding of the research gaps as they relate to cracking in pipelines, based on historic incidents, operator interviews, and subject matter expert opinions. The scope of work consisted of developing future research guideline suggestions through the following tasks: * Task 1 - Collection and review of publicly available reports, * Task 2 - Collection and review of PRCI member incident reports and operator interviews, * Task 3 - Compilation of root causes for historic crack-related pipeline incidents, * Task 4 - Categorization of root causes within the CM-SRP, and * Task 5 - Identification of research gaps in the CM-SRP. This report provides more details about the research suggestions, and cross-references them with the core priorities as outlined in CM-SRP report "Pathway to Achieving Efficient and Effective Crack Management," as well as the future research project ideas that have been submitted to PRCI four CM-SRP pillars. This report has a related Webinar.
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Tucker-Blackmon, Angelicque. Engagement in Engineering Pathways “E-PATH” An Initiative to Retain Non-Traditional Students in Engineering Year Three Summative External Evaluation Report. Innovative Learning Center, LLC, July 2020. http://dx.doi.org/10.52012/tyob9090.

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The summative external evaluation report described the program's impact on faculty and students participating in recitation sessions and active teaching professional development sessions over two years. Student persistence and retention in engineering courses continue to be a challenge in undergraduate education, especially for students underrepresented in engineering disciplines. The program's goal was to use peer-facilitated instruction in core engineering courses known to have high attrition rates to retain underrepresented students, especially women, in engineering to diversify and broaden engineering participation. Knowledge generated around using peer-facilitated instruction at two-year colleges can improve underrepresented students' success and participation in engineering across a broad range of institutions. Students in the program participated in peer-facilitated recitation sessions linked to fundamental engineering courses, such as engineering analysis, statics, and dynamics. These courses have the highest failure rate among women and underrepresented minority students. As a mixed-methods evaluation study, student engagement was measured as students' comfort with asking questions, collaboration with peers, and applying mathematics concepts. SPSS was used to analyze pre-and post-surveys for statistical significance. Qualitative data were collected through classroom observations and focus group sessions with recitation leaders. Semi-structured interviews were conducted with faculty members and students to understand their experiences in the program. Findings revealed that women students had marginalization and intimidation perceptions primarily from courses with significantly more men than women. However, they shared numerous strategies that could support them towards success through the engineering pathway. Women and underrepresented students perceived that they did not have a network of peers and faculty as role models to identify within engineering disciplines. The recitation sessions had a positive social impact on Hispanic women. As opportunities to collaborate increased, Hispanic womens' social engagement was expected to increase. This social engagement level has already been predicted to increase women students' persistence and retention in engineering and result in them not leaving the engineering pathway. An analysis of quantitative survey data from students in the three engineering courses revealed a significant effect of race and ethnicity for comfort in asking questions in class, collaborating with peers outside the classroom, and applying mathematical concepts. Further examination of this effect for comfort with asking questions in class revealed that comfort asking questions was driven by one or two extreme post-test scores of Asian students. A follow-up ANOVA for this item revealed that Asian women reported feeling excluded in the classroom. However, it was difficult to determine whether these differences are stable given the small sample size for students identifying as Asian. Furthermore, gender differences were significant for comfort in communicating with professors and peers. Overall, women reported less comfort communicating with their professors than men. Results from student metrics will inform faculty professional development efforts to increase faculty support and maximize student engagement, persistence, and retention in engineering courses at community colleges. Summative results from this project could inform the national STEM community about recitation support to further improve undergraduate engineering learning and educational research.
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