1,722,755 research outputs found
癌における変異の細胞下レベルでの解析
Full text link研究課題/領域番号:X43021------9085, 研究期間(年度):1968出典：研究課題「癌における変異の細胞下レベルでの解析」課題番号 X43021------9085
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-X43021------9085/）を加工して作成金沢大学医学部research repor
Comparison of Ultem 9085 Used in Fused Deposition Modelling (FDM) with Polytherimide Blends
No full textPolyetherimide (PEI) blends modified by either polycarbonate (PC) or polyethylene terephthalate glycol-modified (PETG) were prepared. The latter modifier (PETG) was an industrial grade widely used for fused deposition modelling (FDM) printing. PEI blends were compared to Ultem 9085, which is the standard PEI grade for FDM printing in advanced applications. All the blends were thoroughly characterized in terms of their rheological, morphological, thermomechanical and tensile properties. Ultem 9085 showed improved rheology for processing over standard PEI. PEI/PC blends with 10 wt % of modifier developed here closely matched the viscosity behavior of Ultem 9085. On the other hand, the blends with low PC content (i.e., less than 20 wt %) outperformed Ultem 9085 in terms of thermal and tensile properties. When PETG was added, similar tensile properties to Ultem 9085 were found. The immiscibility for PC contents higher than 20 wt % deteriorated the tensile properties, making it less attractive for applications, although melt viscosity decreased further for increasing PC contents
Investigation of Ultem 9085 for Use in Printed Orbital Structures
Full text linkAdditive manufacturing is revolutionizing industries ranging from medicine to space. However, the structural characteristics of plastic parts created by these methods are not as well understood as their more established counterparts. This research explored two relevant areas: how the structural characteristics of ULTEM 9085 plastic behaved after exposure to orbital conditions and the design of the cross-sectional area of a beam to be 3-D printed in microgravity based on the expected loads from the printer. To study orbital effects, ULTEM 9085 was printed into 1/4th scale ASTM D638- 14 dogbones using a Stratasys 450mc printer. These dogbones were placed in a vacuum chamber and exposed to ultraviolet (UV) radiation and high temperatures. The dogbones were removed regularly from the testing environments after up to 980 hours in the chamber and subjected to axial loading tests using an MTS Microtester. Using the initial shape of the dogbones and the collected force values, the stressstrain curve for each sample in each exposure duration was found, and the Young\u27s modulus, Ultimate Tensile Strength (UTS), Yield Tensile Strength (YTS), Poisson\u27s ratio, and Fracture Strain calculated. The ULTEM 9085 became stronger as a result of the vacuum and more brittle as a result of the UV radiation. Simultaneously, data from previous studies into ULTEM 9085\u27s structural characteristics was imported into Hyperworks\u27 Optistruct software module. The data was used to optimize a beam\u27s internal structure based on several possible loading configurations expected during printing on orbit. A general design was selected and its maximum allowable end moment was found. The above information will be helpful in designing ULTEM 9085 structures for use on orbit
Embedding Electronics In Printing ULTEM 9085 Quadcopter
No full textThere are a lot of benefits, particularly in aerospace and automotive engineering applications, to embedding electronic systems within structural bodies. First and foremost is the benefit of weight reduction. Typically, electronic hardware must be fitted into some form of protective casing before being mounted onto a bracket, and then onto the airframe section (or into a car) where the hardware can potentially become exposed to variations in pressure, temperature and moisture. By using additive manufacturing to embed the electronics into structural elements, the need for protective casing and brackets can be alleviated, reducing weight and cost while adding protection from the elements. ULTEM 9085 is an engineering thermoplastic used widely in the aerospace industry due to its high tensile and specific strengths relative to other 3D printed thermoplastics (see Figures 1 and 2). Additionally, ULTEM 9085 has been certified for use in commercial aviation and spaceflight applications, due to its low toxicity and low outgassing properties.NRF (Natl Research Foundation, S’pore)Published versio
Linked collectors and determiners for: A distinct new species of riparian rock-dwelling gecko (genus: Hemidactylus) from the southern Western Ghats.
No full textNatural history specimen data linked to collectors and determiners held within, "A distinct new species of riparian rock-dwelling gecko (genus: Hemidactylus) from the southern Western Ghats". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/bfc6faaf-9085-47f4-b80f-0cf69eb717d1">https://bionomia.net/dataset/bfc6faaf-9085-47f4-b80f-0cf69eb717d1</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/bfc6faaf-9085-47f4-b80f-0cf69eb717d1">https://gbif.org/dataset/bfc6faaf-9085-47f4-b80f-0cf69eb717d1</a>. Formatted as a Frictionless Data package
3-D Printed Ultem 9085 Testing and Analysis
Full text linkThe purpose of this document is to analyze the mechanical properties of 3-D printed Ultem 9085. This document will focus on the capabilities, limitations, and complexities of 3D printing in general, and explain the methods by which this material is tested. Because 3-D printing is a relatively new process that offers an innovative means to produce hardware, it is important that the aerospace community understands its current advantages and limitations, so that future endeavors involving 3-D printing may be completely safe. This document encompasses three main sections: a Slosh damage assessment, a destructive test of 3-D printed Ultem 9085 samples, and a test to verify simulation for the 3-D printed SDP (SPHERES Docking Port). Described below, 'Slosh' and 'SDP' refer to two experiments that are built using Ultem 9085 for use with the SPHERES (Synchronized Position Hold, Engage, Reorient, Experimental Satellites) program onboard the International Space Station (ISS) [16]. The SPHERES Facility is managed out of the National Aeronautics and Space Administration (NASA) Ames Research Center in California
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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