Relevant bibliographies by topics / 3DPD

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic '3DPD'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "3DPD"

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Bertholdt, Charline, Gabriela Hossu, Claire Banasiak, Marine Beaumont, and Olivier Morel. "First trimester screening for pre-eclampsia and intrauterine growth restriction using three-dimensional Doppler angiography (SPIRIT): protocol for a multicentre prospective study in nulliparous pregnant women." BMJ Open 10, no. 10 (October 2020): e037751. http://dx.doi.org/10.1136/bmjopen-2020-037751.

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IntroductionPre-eclampsia (PE) and intrauterine growth restriction (IUGR) are two major pregnancy complications, related to chronic uteroplacental hypoperfusion. Nowadays, there is no screening or diagnostic test for uteroplacental vascularisation deficiency in pregnant women. Since 2004, 3 three-imensional power Doppler (3DPD) angiography has been used for the evaluation of uteroplacental vascularisation and three vascular indices are usually calculated: Vascularisation Index (VI), Flow Index (FI) and vascularisation-FI (VFI). A high intraobserver and interobserver reproducibility and a potential interest for placental function study were reported by our team and others.The main objective of our study is to determine differences in 3DPD indices at first trimester between pregnancies defined at their outcome as uncomplicated pregnancy, PE (mild and severe) and IUGR in nulliparous women.Methods and analysisThis is a national multicentre prospective cohort study conducted in four French maternity units. We expect to include 2200 women in a period of 36 months. The nulliparous pregnant women will be recruited during their first trimester consultation (11–13+6 gestation week (GW)).The 3DPD and uterine artery Doppler acquisition will be included in the current routine 11–13+6 GW ultrasound. Also, additional blood samples will be taken for biomarker analysis (PAPP-A and P1GF) and biological collection. Uteroplacental VIs (FI and VFI) will be measured. For each subgroup (uncomplicated pregnancy, PE and IUGR), mean values in 3DPD indices will be computed and compared using a pairwise t test with a Bonferroni correction p value adjustment.Ethics and disseminationThe study was approved by the French Ethics Committee, the Comité de Protection des Personnes SUD MEDITERRANEE IV on 13 February 2018 with reference number 17 12 03. The results of this study will be published in a peer-reviewed journal and will be presented at relevant conferences.Trial registration numberNCT03342014; Pre-results. PHRCN-16-0567.
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Bertholdt, Charline, Marie-Laure Eszto, Mathilde Tournier, Gabriela Hossu, Naoual Mellouki, Aboubaker Cherifi, and Olivier Morel. "Assessment of uteroplacental vascularisation in early first-trimester pregnancy with contrast-enhanced ultrasound and 3D power Doppler angiography: protocol for a prospective, cross-sectional, multicentre and non-randomised open study (“HOPE Study”)." BMJ Open 9, no. 9 (September 2019): e030353. http://dx.doi.org/10.1136/bmjopen-2019-030353.

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IntroductionKnowledge about the mechanisms leading to the establishment of uteroplacental vascularisation is inadequate, and some of what has been thought to be known for decades has recently been challenged by showing that the intervillous space, the major area of maternal-fetal exchange, appears to be perfused by maternal blood at as early as 6 weeks of gestation. The vascular flow then seems relatively constant until 13 weeks when it appears to increase suddenly.ObjectivesThe principal objective is to quantify the perfusion of the intervillous space by contrast-enhanced ultrasonography (CEUS) during the first-trimester at three different gestational ages (8, 11 and 13 weeks). The secondary objectives are to: (1) describe the indicators of vascularisation of the placenta (intervillous space) and the myometrium at the three gestational ages, measured by CEUS and three-dimensional power Doppler (3DPD) angiography; (2) compare the diagnostic performance of CEUS and 3DPD for the demonstration and quantification of uteroplacental vascularisation and (3) establish a biological collection of placentas to increase knowledge about placental development and functions during pregnancy.Methods and analysisThis is a prospective, cross-sectional, multicentre and non-randomised open study. We will include 42 women with ongoing pregnancy and divided into three groups of gestational ages (ie, 14 women by per group): 8, 11 and 13 weeks of gestation. 3DPD and then CEUS will be performed and the data about the perfusion kinetics and the 3DPD indices will be calculated and then compared with each other and for each gestational age.Ethics and disseminationThe appropriate French Ethics Committee Est III approved this study and the related consent forms on 5 April 2016, and the competent authority (Agence Nationale de Sécurité du Médicament et des Produits de Santé) authorised the study on 21 June 2016. The results of this study will be published in a peer-reviewed journal and will be presented at relevant conferences.Trial registration numbersClinicalTrials.gov registry (NCT02884297); EudraCT registry (2015-005655-27).
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Simioni, E., C. Re, T. Mudric, G. Cremonese, S. Tulyakov, A. Petrella, A. Pommerol, and N. Thomas. "3DPD: A photogrammetric pipeline for a PUSH frame stereo cameras." Planetary and Space Science 198 (April 2021): 105165. http://dx.doi.org/10.1016/j.pss.2021.105165.

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Re, C., S. Tulyakov, E. Simioni, T. Mudric, G. Cremonese, and N. Thomas. "PERFORMANCE EVALUATION OF 3DPD, THE PHOTOGRAMMETRIC PIPELINE FOR THE CASSIS STEREO IMAGES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W13 (June 5, 2019): 1443–49. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w13-1443-2019.

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<p><strong>Abstract.</strong> A novel photogrammetric pipeline has been designed by INAF-Padova for the processing of the recent stereo images of CaSSIS and it will be a starting point for the future procedures that will be applied to Stereo Camera (STC) (Cremonese, 2009; Da Deppo, 2010) images for the BepiColombo mission to Mercury. The large number of stereo pairs being generated has made it necessary that several teams attempt to generate products. The presented procedures are the two strategies (proposed by INAF-PADOVA and by EPFLLausanne) available nowadays in an international attempt to generate 3D products from the CaSSIS images. The comparisons here presented will be the first of several such efforts and are important to make the planetary community aware of the accuracy of the 3D data available. Furthermore, the possibility to consider higher accuracy DTMs as the ones of HiRISE makes the quality assessment of stereo products of CaSSIS robust and important for the assessment of data to be provided to the scientific community. The performance evaluation of the INAF-Padova pipeline (3DPD software) is the main objectives of this work. Additionally, the comparison between the correlation phase of 3DPD and of ASP (Moratto, 2010) that is integrated in the EPFL pipeline has been considered.</p>
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Zhang, De Ke, Ying Bin Cao, Rong Jun Liu, and Ya Nan Jiao. "Effect of Braided Structure on Mechanical Properties of Cf/SiC Composites." Advanced Materials Research 538-541 (June 2012): 423–26. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.423.

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Using polycarbosilane(PCS) as precursor materials, 2.5D、3D3d、3D4d、3D5d braided structure Cf/SiC composites were prepared by Precursor Infiltration and Pyrolysis (PIP). The result showed that different braided structure Cf/SiC composites had dissimilar change tendency of density and porosity. The braided structure and pore position influenced mechanical properties of Cf/SiC composites obviously. 2.5D Cf/SiC composites had the lowest mechanical properties compared others braided structure via PIP process, 3D5d Cf/SiC composites had the highest mechanical properties for the bending strength reached 334MPa, modulus 99.5GPa. Furthermore, the microstructure and properties of different braided structure Cf/SiC composites has been investigated by means of SEM.
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Molnár, András, Andrea Surányi, Mária Jakó, Tibor Nyári, and Gábor Németh. "A háromdimenziós power Doppler-indexek és a perinatalis kimenetel vizsgálata méhen belüli növekedési restrikcióval szövődött terhességekben." Orvosi Hetilap 158, no. 26 (July 2017): 1008–13. http://dx.doi.org/10.1556/650.2017.30784.

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Abstract: Introduction: Development of intrauterine growth restriction (IUGR) can be traced back to maternal or fetal factors, but in many cases we find placental factors (reduced placental circulation) in the background. Aim: Our aim was to examine whether the reduced placental bloodperfusion and vascularity show any correlation with cesarean section frequency and the clinical outcome in IUGR pregnancies. The aim of the present study was also to use a properly calibrated and reproducible method for evaluating placental blood flow, that can later be incorporated into the routine examination. Method: 254 women were recruited in our prospective case-control study. The 3 dimensional power Doppler (3DPD) ultrasound indices; vascularisation index (VI), flow index (FI) and vascularization flow index (VFI) were measured on each participant. Results: Median VI was 3.7% (interquartile range [IQR] 3.2%–4.2%) in the IUGR group and 10.1% (IQR 8.6%–10.9%) in the control group (p = 0.001). Median FI value was 40.0 (IQR 39.7–42.5) in the IUGR group and 45.1 (IQR 44.1–53.1) in the control group (p = 0.012). Median VFI was 2.2 (IQR 2.1–2.4) in the IUGR group and 4.8 (IQR 4.4–5.3) in the control. Conclusions: The 3DPD indices may be useful for examining changes in circulation in IUGR pregnancies to characterize the underlying pathology. Orv Hetil. 2017; 158(26): 1008–1013.
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Chen, Sue-Jar, Chie-Pein Chen, Fang-Ju Sun, and Chen-Yu Chen. "Comparison of Placental Three-Dimensional Power Doppler Vascular Indices and Placental Volume in Pregnancies with Small for Gestational Age Neonates." Journal of Clinical Medicine 8, no. 10 (October 11, 2019): 1651. http://dx.doi.org/10.3390/jcm8101651.

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This prospective observational study aimed to compare the changes in placental vascular indices and placental volume using three-dimensional power Doppler (3DPD) ultrasound in pregnancies with small for gestational age (SGA) neonates. We enrolled 396 women with singleton pregnancies from September 2013 to June 2016. Placental vascular indices, including the vascularization index (VI), flow index (FI), and vascularization flow index (VFI), and placental volume were obtained using 3DPD ultrasound in the first and second trimesters. Of the enrolled women, 21 delivered SGA neonates and 375 did not. In the first trimester, the SGA group had a significantly lower mean FI (25.10 ± 7.51 versus 33.10 ± 10.97, p < 0.001) and VFI (4.59 ± 1.95 versus 6.28 ± 2.35, p = 0.001) than the non-SGA group. However, there was no significant difference in the placental volume between the two groups during the first trimester. In the second trimester, the SGA group also had a significantly lower mean FI (27.08 ± 7.97 versus 31.54 ± 11.01, p = 0.022) and VFI (6.68 ± 1.71 versus 8.68 ± 3.09, p < 0.001) than the non-SGA group. In addition, a significantly smaller placental volume was noted in the SGA group (104.80 ± 24.23 cm3 versus 122.67 ± 26.35 cm3, p = 0.003) than in the non-SGA group during the second trimester. The results showed that a decreased placental VFI occurred earlier than a decreased placental volume in SGA pregnancies.
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Nagori, C., and S. Panchal. "OP19.01: Comparison of CD & 3DPD for prehCG follicular & endometrial assessment in IUI cycles." Ultrasound in Obstetrics & Gynecology 38, S1 (September 14, 2011): 110. http://dx.doi.org/10.1002/uog.9435.

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Sciaky-Tamir, Yael, Sarah M. Cohen, Drorith Hochner-Celnikier, Dan V. Valsky, Baruch Messing, and Simcha Yagel. "Three-dimensional power Doppler (3DPD) ultrasound in the diagnosis and follow-up of fetal vascular anomalies." American Journal of Obstetrics and Gynecology 194, no. 1 (January 2006): 274–81. http://dx.doi.org/10.1016/j.ajog.2005.08.045.

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Alcazar, J., S. Guerriero, B. Olartecoechea, S. Ajossa, M. Jurado, and G. B. Melis. "P28.05: Three-dimensional power Doppler angiography (3DPD) in adnexal masses: re-analysis of prospective collected data." Ultrasound in Obstetrics & Gynecology 38, S1 (September 14, 2011): 263. http://dx.doi.org/10.1002/uog.9953.

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Dissertations / Theses on the topic "3DPD"

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Rodríguez, Morante David. "Papel de la angiografía ecográfica con Power Doppler tridimensional (sistema vocal) en el manejo de masas anexiales sospechosas de malignidad." Doctoral thesis, Universitat de Barcelona, 2009. http://hdl.handle.net/10803/2489.

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OBJETIVO. El objetivo de este estudio fue explorar la capacidad de la ecografía tridimensional con Power Doppler (3DPD) para discriminar los tumores benignos y malignos dentro del grupo de masas anexiales sólido-quísticas con vascularización central y definir los puntos de corte de los índices 3DPD que se deben utilizar en un entorno clínico.

MÉTODOS. Un total de 143 mujeres consecutivas (edad media, 50,4 años, rango, 17-82 años) con diagnóstico de lesión sólido-quística o sólida en modo B y con vascularización central en el 2DPD fueron evaluadas con ecografía 3D PD antes de la cirugía. El 3DPD se utilizó para evaluar la vascularización en las proyecciones papilares y áreas sólidas. Los índices vasculares (índice de vascularización [VI], índice de flujo [FI], y el índice vascularization-flujo [VFI]) se calculan automáticamente. El diagnóstico histológico definitivo se obtuvo en cada caso.

RESULTADOS. Un total de 113 masas (74%) eran malignas y 39 (26%) fueron benignoa. La evaluación morfológica reveló 30 uniloculares sólidas (19,7%), 43 multilocular sólidas (28,3%), y 79 masas sólidas (52%). La media VI (9,365% frente al 3,3%, P <.001), FI (34,318 versus 28,794; p <.001), y VFI (3,233 frente a 1,15; P <0,01) fueron significativamente mayores en los tumores malignos. No se encontraron diferencias en el índice de resistencia, índice de pulsatilidad, y la velocidad pico sistólica. El análisis de la curva ROC reveló un área bajo la curva de 0,77 (intervalo de confianza del 95%, 0.69-0.85), 0,71 (0.60-0.81) y 0.75 (0.66-0.83) para la VI, FI y VFI, respectivamente. Para reducir la tasa de falsos positivos en casi una tercera parte, los valores de sensibilidad para el VI (corte, 1,556%), FI (25,212), y VFI (0,323) fueron 92%, 95% y 93%, respectivamente.

CONCLUSIONES. Los índices vasculares con 3DPD son útiles para reducir la tasa de falsos positivos en lesiones sólidas y sólido-quísticas con vascularización central.

PALABRAS CLAVE: masa anexial; cáncer de ovario; Power Doppler, 3DPD
OBJECTIVE. The purpose of this study was to explore the role of 3-dimensional (3D) power Doppler (PD) sonography to discriminate between benign and malignant cystic-solid and solid vascularized adnexal masses and to define cutoff values for 3D PD indices to be used in a clinical setting.

METHODS. A total of 143 consecutive women (mean age, 50.4 years; range, 17-82 years) with diagnoses of cystic-solid or solid vascularized adnexal masses on B-mode and 2-dimensional PD sonography were evaluated by 3D PD sonography before surgery. Three-dimensional PD sonography was used to assess vascularization within papillary projections and solid areas with a virtual organ computer-aided analysis program.
Three-dimensional PD vascular indices (vascularization index [VI], flow index [FI], and vascularizationflow index [VFI]) were automatically calculated. A definitive histologic diagnosis was obtained in each case.

RESULTS. A total of 113 masses (74%) were malignant, and 39 (26%) were benign. Morphologic evaluation revealed 30 unilocular solid masses (19.7%), 43 multilocular solid masses (28.3%), and 79 mostly solid masses (52%). The mean VI (9.365% versus 3.3%; P < .001), FI (34.318 versus 28.794; P < .001), and VFI (3.233 versus 1.15; P < 0.01) were significantly higher in malignant tumors. No differences were found in the resistive index, pulsatility index, and peak systolic velocity. Receiver operating characteristic analysis revealed an area under the curve of 0.77 (95% confidence interval, 0.69-0.85), 0.71 (0.60-0.81), and 0.75 (0.66-0.83) for the VI, FI and VFI, respectively. For reducing the false-positive rate by almost one-third, sensitivity values for the VI (cutoff, 1.556%), FI (25.212), and VFI (0.323) were 92%, 95%, and 93%, respectively. CONCLUSIONS. Three-dimensional PD vascular indices could be helpful for reducing the false-positive rate in cystic-solid and solid vascularized adnexal masses.

KEY WORDS: adnexal mass; ovarian cancer; 3-dimensional power Doppler sonography.
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Lange, Katharina. "Multidimensionale Darstellung der proximalen RCA in 3D4D- Technik im Vergleich zur Koronarangiographie." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-146506.

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Das Ziel der vorliegenden Studie war die Analyse der Detektierbarkeit von Stenosen und Lumenverschlüssen im proximalen Bereich der rechten Koronararterie mit konventioneller 2D- und 3D- Echokardiographie von transthorakal. Zusätzlich wurden die Befunde der 3D-Echoloops mit den Untersuchungsergebnissen der Koronarangiographie verglichen. Methodisch wurden daher bei Patienten mit bestehender Indikation zur Koronarangiographie vorhergehende zweidimensionale parasternale Lang- (n=91) und Kurzachsenaufnahmen (n=76), sowie parasternale dreidimensionale (n=91) echokardiographische Aufnahmen des Ostiums und der proximalen Region der rechten Herzkranzarterie durchgeführt. Durch zusätzliche Schnittebenen der proximalen Abschnitte der rechten Koronararterie sollte die konventionelle zweidimensionale Echokardiographie für eine Stenosendetektion ergänzt werden. Diese ermöglichten eine genaue Darstellung der rechtskoronaren Morphologie im proximalen Gefäßbereich. Maximal konnten die proximalen 35mm der rechten Koronararterie untersucht werden. Die Ergebnisse der einzelnen verschiedenen echokardiographischen Dokumentationen wurden miteinander und mit denen der Koronarangiographie verglichen. Insgesamt zeigten sich keine signifikanten Unterschiede zwischen den Ergebnissen der 2D Echokardiographie und der Koronarangiographie. Die Diameter der Streckenmessungen an der rechten Koronararterie in der 3D-Echokardiographie und der Koronarangiographie sind hingegen in ihren Mittelwerten signifikant verschieden. Dies ist durch häufigere Sekantenanschnitte der Gefäße mittels Echokardiographie bedingt. Die höchste Sensitivität konnte mittels 3D-Echokardiographie (98%) nachgewiesen werden, wohingegen die zweidimensionale Technik bessere Spezifitäten (91% in 2D-Langachsen- und 92% in 2D-Kurzachsen-Aufnahmen) aufweist. Diese Ergebnisse zeigen den Nutzen der Echokardiographie im klinischen Alltag zur intravasalen Stenosendetektion der rechten Koronararterie.
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Gatto, Matteo. "Investigation of 3DP technology for fabrication of surgical simulation phantoms." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8362.

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The demand for affordable and realistic phantoms for training, in particular for functional endoscopic sinus surgery (FESS), has continuously increased in recent years. Conventional training methods, such as current physical models, virtual simulators and cadavers may have restrictions, including fidelity, accessibility, cost and ethics. In this investigation, the potential of three-dimensional printing for the manufacture of biologically representative simulation materials for surgery training phantoms has been investigated. A characterisation of sinus anatomical elements was performed through CT and micro-CT scanning of a cadaveric sinus portion. In particular, the relevant constituent tissues of each sinus region have been determined. Secondly, feedback force values experienced during surgical cutting have been quantified with an actual surgical instrument, specifically modified for this purpose. Force values from multiple post-mortem subjects and different areas of the paranasal sinuses have been gathered and used as a benchmark for the optimisation of 3D-printing materials. The research has explored the wide range of properties achievable in 3DP through post-processing methods and variation of printing parameters. For this latter element, a machine-vision system has been developed to monitor the 3DP in real time. The combination of different infiltrants allowed the reproduction of force values comparable to those registered from cadaveric human tissue. The internal characteristics of 3D printed samples were shown to influence their fracture behaviour under resection. Realistic appearance under endoscopic conditions has also been confirmed. The utilisation of some of the research has also been demonstrated in another medical (non-surgical) training application. This investigation highlights a number of capabilities, and also limitations, of 3DP for the manufacturing of representative materials for application in surgical training phantoms.
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Wang, Hong-Ren 1973. "Gradient-Index (GRIN) lenses by Slurry-based Three-Dimensional Printing (S-3DP)." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30248.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.
In title on t.p., superscript "TM" follows "S-3DP".
Includes bibliographical references.
GRIN lenses with vertical index variation and radial index variation have been successfully fabricated using S-3DPTM. Two silica-based material systems, A1203-SiO₂ and BaO-SiO₂, have been studied and used for the fabrication of GRIN lenses. Aluminum nitrate was dissolved in water to provide the dopant salt solution for S-3DPTM. The pre-sintering treatment at 1000 ⁰Cfor 24 hours in. vacuum (-5x10-6 torr) was used to remove the hydroxyl groups that cause bubbles during sintering. The sintering condition for the A1203-SiO₂ material system was found to be 1650 ⁰C for 30 minutes in vacuum. Two alumina-doped silica GRIN lenses with vertical index variation, Design 1.63 [percent] max and Design 2.5 [percent] max, were fabricated with effective focal lengths of 10.00 cm and 6.10 cm, respectively. An alumina-doped silica GRIN lens with radial parabolic index variation also was fabricated with effective focal lengths of 63.75 cm in the x direction and 52.50 cm in the y direction. The BaO-SiO₂ material system, which has a 2.4 stronger index changing ability than the A1203-SiO₂ material system, also was developed. Barium acetate was used as the dopant source. The pre-sintering treatment was found to be 900 ⁰C for 18 hours in air to convert barium acetate to barium oxide. The sintering condition was found to be 1725 ⁰C for 10 minutes in vacuum. A barium oxide-doped GRIN lens with radial parabolic index variation was fabricated. Its effective focal length was measured to be 14.63 cm in the x direction and 11.14 cm in the y direction. The barium oxide concentration profiles were measured. The theoretical focal lengths were calculated and compared with the effective focal lengths.
by Hong-Ren Wang.
Ph.D.
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Oliveira, Mark A. (Mark Anthony) 1977. "Slurry based Three Dimensional Printing (S-3DP tm) of tungsten carbide cobalt." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/109638.

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Kang, Jinah. "Retrospective Three-dimensional facial soft tissue analysis in skeletal Class I malocclusions with premolar extractions." Master's thesis, Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/512008.

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Oral Biology
M.S.
Objectives: Decreased volume and atrophy are hallmarks of aging facial soft tissues. In perioral region, a hallmark is deepening of nasolabial folds. It is unknown how extraction orthodontic treatment affects such tissues. This study describes nasolabial fold regional changes in premolar extraction cases. Methods: Pre- and post-treatment 3dMD images of 14 skeletal Class-I patients with 4 premolar extractions were studied for changes of tissue thickness in the nasolabial fold region. All subjects were treated at Temple University. The sample consisted of 10 females and 4 males aged 12 -26 years old and included three ethnicities: Asian, Hispanic, and African American. With the aid of 3dMD Vultus software, both qualitative and quantitative analyses were collected. Color histograms were created for qualitative analyses, and quantitative volumetric changes in cheek volume were correlated to 2-D cephalometric lip thickness, lip retraction, and incisor retraction. Data were analyzed by Spearman’s rho for lip thickness, lip retraction, and incisor retraction. Regression analyses were completed controlling for age, gender, and ethnicity. Results: In this sample of Class-I malocclusion patients with 4 premolar extraction treatment, quantitative results showed no significant correlations were found between 2-D soft tissue thickness and volumetric changes around the nasolabial fold region. Moreover, none of the other characteristics including, change in the upper lip in 2-D cephalometric measurements, age, and gender were factors that correlated with volumetric changes around the nasolabial fold. The qualitative findings showed changes in lips and commissures did not affect the soft tissues around the nasolabial fold areas. Overall, there were no significant correlations between the thickness of soft tissue, change in the lips in 2-D, age, ethnicity, and gender in volumetric changes. Conclusions: Data generated by this investigation did not imply any cause-and-effect relationship between measurements of lip thickness, lip retraction, and incisor retraction to the deepening of the nasolabial fold.
Temple University--Theses
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Reeve, Glen M. D. "Sedimentation And Hydrodynamics of Whitianga Estuary." The University of Waikato, 2008. http://hdl.handle.net/10289/2344.

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Whitianga Estuary is a bayhead barrier type estuary located on the east of the Coromandel Peninsula, North Island, New Zealand. The catchment has undergone many land-use changes since pre-European settlement. In some areas of the catchment land-use has changed from native forest to grasslands to forestry and back to pasture. These changes in catchment land-use all contribute to increased sedimentation into the estuary. Development of the estuary itself has also occurred in recent times. Much growth has been focussed around the estuary due to Whitianga town-ship having a large boating community, and includes a 170 berth marina and wharf situated at the tidal inlet entrance to the estuary. These, and the extensive canal development engineering works can have substantial impacts on the sedimentation regime, and may modify tidal circulation, flushing, and sediment deposition within the estuary. The principle aim of this research is to assess hydrodynamics and sedimentation of the estuary for future management and development purposes, and also to model different scenarios in order to determine the most cost effective, and least obtrusive design for a proposed boat-ramp and approach channel near the marina. To determine sedimentation rates, sediment cores from four locations were collected to depths of 1 m. Coring locations were chosen based on preliminary model run results, selecting areas that appeared to be long-term sediment sinks of a stable nature. Cores were divided into 10 mm sections and prepared for 210Pb dating and heavy metal analysis, to make an assessment of the vertical sedimentation rates. Recent sedimentation rates were found to be as high as 9 mm/yr post-1950s and past sedimentation rates as high as 30 mm/yr pre-1950s. The use of heavy metal analysis for dating proved difficult as the background levels of the conservative elements used to normalise results varied, making the geochemical analysis approach inappropriate. As bathymetry is one of the most important aspects of modelling, a large amount of surveying was undertaken for this study. LiDAR, singlebeam data, and recent rectified aerial photographs were interpreted for the creation of a bathymetric grid file to be used for hydrodynamic modelling of the estuary. The 3DD numerical model was used to determine tidal flows and current velocities. From this initial hydrodynamic model a particle-tracking model was created to determine sediment transport pathways within the estuary. From the initial 20 m model it was then possible to create a number of nested model grids for the purpose of determining the best practice scenario for the creation of a proposed boat ramp and associated approach channel near the harbour entrance. Hydrodynamic results suggest that residual circulation in Whitianga Estuary is nearly in balance, with a low ebb tidal domination present. Particle tracking results suggest that sediment entrained and carried into and within the estuary will accumulate on the intertidal flats. Sediment transport modelling indicates that the impact of a proposed boat-ramp will result in sedimentation of the dredged approach channel due to reductions in residual and tidal velocities.
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Brown, Paul. "Magneto-responsive surfactants." Thesis, University of Bristol, 2012. http://hdl.handle.net/1983/41cd19c9-3d4d-47c9-a6a6-dfcab12586f2.

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Surfactants comprise one of the largest volume commodity chemicals in the world and have multifarious uses from pharmaceuticals, agrochemicals, food, fuel and lubricant additives, paints and inks as well as detergents and cleaning agents. The ability to control surfactants once they are in solution is of great importance not only for scientific reasons but also because of environmental and economic interest. To this end, surfactants sensitive to changes in pH, temperature, C02, light and redox have already been developed. This thesis investigates a new class of surfactants designed to be magnetically active, whereby the composition and physico-chemical properties of a system may be perturbed simply by the switching "on" and "off" of a magnetic switch and with no significant energy input. The thesis demonstrates that these new magneto-responsive surfactants behave like conventional surfactants but are now bifunctional allowing for new magnetic approaches where previously magnetic nanoparticles have been employed. For example, the magnetic properties makes it easier to round up and remove the surfactant from a system once it has been added. By developing the first nanoparticle-free magnetic emulsions the potential for further applications in environmental clean ups (e.g. oil spills), water treatment or drug delivery have been demonstrated. In addition to this, the combination of surfactant adsorption and intrinsic magnetism has allowed for the control and manipulation of biomolecules without the need for magnetic nanoparticles. This work explores both the fundamental properties of these novel surfactants and also takes significant steps to optimize the surfactants for potential applications.
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Håkansson, Filip. "3D PDF." Thesis, Jönköping University, JTH, Civil Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1341.

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This report is about Adobe Acrobat 3D and their new PDF format witch can contain 3 dimensional models that are interactive. The purpose is to find out if the program and the format work in a level that is suitable for the market. To create this PDF you need Acrobat 3D installed on your computer but it only needs Acrobat Reader 7 or 8 to open it, and the Reader is free to download on the internet.

The examination is focusing on four formats: U3D, 3DS, DWG and DXF because they are the most common in the building industry seen from the architects’ way. From a 3D model exported to these four formats they where converted to PDF in different settings to be compared in different points as information and size of the files. The result where put together in tables for an easy overview.

During the work there were no big differences between the results from the different settings noticed. The differences depended more from which format the PDF where converted from. Then the program is not that old on the market there are still some things that can be improved.

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Schuler, Megan G. "Perception of profile appearance as judged by peers using 3D video imaging." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4157.

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The purpose of this study was to investigate the social perceptions of subjects with differing lip position and facial convexity in three dimensions. A 3dMD camera (3dMD, Atlanta, GA) was used to capture 3D images of 9 subjects’ faces. The images were altered to have ideal lip position and ideal convexity, ideal lip position and Class II convexity, Class II lip position and ideal convexity, and Class II lip position and Class II convexity. 400 laypersons rated their perceptions of the subjects’ athletic ability, popularity, leadership, and intelligence on a VAS scale. Subjects with ideal lip position relative to the E-line were rated significantly higher for leadership and intelligence. Males with ideal facial convexity were judged to be better leaders and more intelligent than those with Class II convexity. Subjects with ideal lip position were given the highest mean VAS scores for all four social attributes. The perception of differences related to facial convexity was inconsistent.
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Books on the topic "3DPD"

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Magnenat-Thalmann, Nadia. Modelling the Physiological Human: 3D Physiological Human Workshop, 3DPH 2009, Zermatt, Switzerland, November 29 – December 2, 2009. Proceedings. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2009.

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3dd: A 3-D Celebration of Breasts. Seven Footer Press, 2010.

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Hoyle, William, and T. Birtchnell. 3D Printing for Development in the Global South: The 3D4D Challenge. Palgrave Pivot, 2014.

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Z, Smith, and Space Environment Center (U.S.), eds. Comparison of plasma parameter values obtained from the WIND SWE and 3DP instruments. Boulder, Colo: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Space Environment Center, 1998.

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Z, Smith, and Space Environment Center (U.S.), eds. Comparison of plasma parameter values obtained from the WIND SWE and 3DP instruments. Boulder, Colo: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Space Environment Center, 1998.

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Z, Smith, and Space Environment Center (U.S.), eds. Comparison of plasma parameter values obtained from the WIND SWE and 3DP instruments. Boulder, Colo: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Space Environment Center, 1998.

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Book chapters on the topic "3DPD"

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Birtchnell, Thomas, and William Hoyle. "The 3D4D Challenge." In 3D Printing for Development in the Global South, 13–35. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137365668_2.

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Birtchnell, Thomas, and William Hoyle. "The 3D4D Elements." In 3D Printing for Development in the Global South, 81–95. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137365668_6.

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Birtchnell, Thomas, and William Hoyle. "3D4D Indicators and Forerunners." In 3D Printing for Development in the Global South, 96–112. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137365668_7.

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Griffin, James. "Biotech 3DP digital watermarking." In Intellectual Property Rights and Emerging Technology, 28–49. New York, NY: Routledge, 2018.: Routledge, 2018. http://dx.doi.org/10.4324/9781351239905-3.

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Eyers, Daniel. "Flexibility Strategies for 3DP." In Managing 3D Printing, 77–96. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-23323-5_6.

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Ryan, Michael. "Implementation Scenarios for 3DP." In Managing 3D Printing, 7–24. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-23323-5_2.

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Minetola, Paolo, Paolo C. Priarone, and Giuseppe Ingarao. "Sustainability for 3DP Operations." In Managing 3D Printing, 97–126. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-23323-5_7.

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Kontovourkis, Odysseas. "3D Printing Technology Within a Regenerative Construction Framework." In Future City, 245–61. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71819-0_13.

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Abstract3D printing (3DP) is considered as a promising technology in construction industry due to a number of advantages that among others include fast and accurate construction, as well as elimination of formworks and material waste. Although 3DP technology is at an early stage of adoption in construction industry, its positive contribution towards a more sustainable construction approach is well acknowledged. Nevertheless, various constraints prevent its further establishment that include among others lack of knowledge among construction actors, premature investigation regarding techniques and material properties, as well as limited work on design optimization, cost, and environmental impact performance analysis. This chapter aims to contribute towards this direction by analysing the 3DP cost and environmental impact of a number of brick units, forming walls with different geometrical complexity. Results show that while walls’ complexity is increased, there are no significant changes in cost, global warming and primary energy consumption. In contrast, through the application of traditional construction processes, the result values would have been increased proportionally to the degree of complexity. This proves the potential of applying the 3DP technique to the construction of any structure at no extra cost and without increasing the environmental impact. Also, it provides an indication of its potential to be included within a regenerative construction framework.
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Delić, Mia. "Technology Adoption Models for 3DP." In Managing 3D Printing, 25–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-23323-5_3.

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Bolles, Robert C., and Patrice Horaud. "3DPO: A Three-Dimensional Part Orientation System." In The Kluwer International Series in Engineering and Computer Science, 399–450. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1981-8_10.

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Conference papers on the topic "3DPD"

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Zhou, Ding, Jiabei Jiang, and Yuqing Zou. "Systemic Design Method for Co-creation of 3D Printing Service." In Systems & Design: Beyond Processes and Thinking. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/ifdp.2016.3144.

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Background- As one of the objectives of Design for Additive Manufacture, the capability of customized geometry promotes 3D printing to increasingly realize product customization in the service market. Defined as a business strategy focusing on customer experience and interaction, co-creation is expected to obtain fast-growing market volume. Recently, some co-creation of 3D printing service (3DPS) have been released to realize value creation. Despite its rapid growth, there is little research on this field, especially its design method. Aim- This research aims to define a systemic design method for developing the co-creation of 3DPS. Method- First, this research distinguished ambiguous-type and definite-type of 3DPS co-creation. The latter was taken as the current research object, because it presents the services scope more clearly. Furthermore, in order to solve the research question, that is, how to organize the service innovation for 3DPS co-creation, evidence needed to be collected by observing the mentioned cases. Therefore, holistic multiple-case study of 3DPS co-creation samples was designed and conducted, as it was herein employed as the research method. This research is divided into three sections. The first section presents the preparation for data collection, involving case selection and the formulation of evidence collection. The second section analyzes the collected evidences. Based on the evidence analysis, the third section concludes the knowledge of 3DPS co-creation. In order to collect adequate evidences, a pair of models was employed to build a framework. The first one is the Den Hertog's service innovation model, which presents four dimensions including new service concept, new client interface, new service delivery system, and technological options. Another model refers to the building blocks of interactions for value co-creation: dialogue, access, risk-benefits, and transparency, presenting the components in basis construction, which are necessary for the interaction between consumer and service provider. Finding- The findings conclude a systemic design method for 3DPS co-creation, which is divided into the following steps: embedding 3DPS co-creation in current product customization, developing a WebGL-based interface for service processes, preparing 3D printing technology for customized results, evaluating and optimizing the co-creation structure according to the standard including clear dialogues, complete customization access, reasonable understanding of risk-benefits, and ideal transparency.Conclusion- This research proposes a systemic design method for co-creation of 3DPS, which promises benefits to enterprises engaged in the 3D printing service, and will contribute to promoting co-creation in the context of service design and other related fields.DOI: http://dx.doi.org/10.4995/IFDP.2016.3144
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Barkhaya, Nurul Maziah Mohd, Noor Dayana Abd Halim, and Noraffandy Yahaya. "Development of 3DPH: HoloRead for Preschool Children’s Learning." In 2018 IEEE 10th International Conference on Engineering Education (ICEED). IEEE, 2018. http://dx.doi.org/10.1109/iceed.2018.8626977.

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Paydar, O. H., C. N. Paredes, and R. N. Candler. "THREE-DIMENSIONALLY-PRINTED (3DP) MICROFLUIDIC DEVICES." In 2012 Solid-State, Actuators, and Microsystems Workshop. San Diego: Transducer Research Foundation, 2012. http://dx.doi.org/10.31438/trf.hh2012.57.

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Ratnayake, R. M. Chandima. "Making Sense of 3D Printing/Additive Layer Manufacturing in Offshore Petroleum Industry: State of the Art." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54537.

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Three-dimensional printing (3DP)/additive layer manufacturing (ALM) allows the cost-effective and fast fabrication of parts with intricate/complex external and internal structure via the addition of material layer-by-layer in a controlled environment. Hence, 3DP/ALM related technology has a significant potential to mitigate most spare parts related challenges present in the offshore petroleum industry. That is especially the case in offshore petroleum operations in remote locations and harsh environments (e.g. Arctic operations), when parts can be printed on-site upon demand. Digitalized and localized supply chains enable the minimization of delivery lead-times. This is vital when there is a significantly large lead-time involved for spare parts to come from a warehouse or manufacturer. Putting multiple parts together into one minimizes future inspection and maintenance challenges, where, without 3DP/ALM, it is too expensive or impossible to produce with the existing conventional manufacturing approaches. Mass customization and 3D visualization allow industry leaders, engineers and technicians to gain a better understanding of the equipment operation. This manuscript provides a comprehensive investigation of the potential to use 3DP/ALM in general and within the offshore petroleum industry. In addition, it suggests a methodology for investigating optimal parameter settings (i.e. designing of parameter combination) when a 3DP/ALM machine supplier’s manual does not specify the parameter combinations for a certain metal and/or when the end-product requirements demand certain metallurgical properties and mechanical characteristics.
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Yu, D. G., X. X. Shen, J. Han, L. M. Zhu, C. Branford-White, X. Y. Li, and X. L. Yang. "Oral Fast-Dissolving DDD Fabricated Using 3DP." In 2008 2nd International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.729.

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Sun, Qinglei, Yang Peng, Hao Cheng, Yun Mou, and Mingxiang Chen. "Direct Ink Printing of Cavities in DPC Ceramic Substrates With Kaolin Pastes for Hermetic Packaging." In ASME 2019 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ipack2019-6616.

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Abstract Fabrication of three-dimensional cavities containing kaolin pastes to be used as direct plated copper (3DPC) substrates ceramics is a very important advancement for electronic packaging of hermetic and ultraviolet light emitting diodes. This work demonstrates usage of pastes consisting of 32–40 wt% of kaolin clay and polyacrylic acid for direct ink printing (DIP) of 3DPC. Rheological and zeta potential tests were performed to determine printability and stability, respectively, of these kaolin pastes. Kaolin content variation had minimum effect on absolute values of the zeta potentials. All pastes had enough stability with the absolute values larger than 30 mV. 40 wt% kaolin solids mass paste was the optimal for DIP due to its excellent shear thinning and viscoelastic properties. Cured 40 wt% kaolin solids mass paste had superior compressive, flexural and bonding strengths. DIP using pastes containing 40 wt% of kaolin is promising for electronic chip integrated hermetic packaging.
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Zhou, Qian, Kai Wu, Gregor Miller, Ian Stavness, and Sidney Fels. "3DPS: An auto-calibrated three-dimensional perspective-corrected spherical display." In 2017 IEEE Virtual Reality (VR). IEEE, 2017. http://dx.doi.org/10.1109/vr.2017.7892376.

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Li, Xuan, Jun Wan, Yi Jin, Ajian Liu, Guodong Guo, and Stan Z. Li. "3DPC-Net: 3D Point Cloud Network for Face Anti-spoofing." In 2020 IEEE International Joint Conference on Biometrics (IJCB). IEEE, 2020. http://dx.doi.org/10.1109/ijcb48548.2020.9304873.

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Sama, M., V. Pacella, E. Farella, L. Benini, and B. Ricco. "3dID: a low-power, low-cost hand motion capture device." In 2006 Design, Automation and Test in Europe. IEEE, 2006. http://dx.doi.org/10.1109/date.2006.243817.

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Baqersad, Javad, Peyman Poozesh, Christopher Niezrecki, and Peter Avitabile. "Full-Field Strain Monitoring of a Wind Turbine Using Very Limited Set of Displacements Measured With Three-Dimensional Point Tracking." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47413.

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In the current work, the optical three-dimensional point-tracking (3DPT) measurement approach is used in conjunction with a recently developed modal expansion technique. These two approaches (empirical and analytical) complement each other and enable the prediction of the full-field dynamic response on the surface of the structure as well as within the interior points. The practical merit of the approach was verified using a non-spinning and spinning wind turbine rotor. The three-bladed wind turbine rotator was subjected to different loading scenarios and the displacement of optical targets located on the blades was measured using 3DPT. The measured displacement was expanded and applied to the finite element model of the turbine to extract full-field strain on the turbine. The sensitivity of the proposed approach to the number of optical targets was studied in this paper. It is shown the approach can accurately predict the strain even with very few set of measurement points.
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Reports on the topic "3DPD"

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Kahler, S. W., N. U. Crooker, and D. E. Larson. Parameterizing the Wind 3DP Heat Flux Electron Data. Fort Belvoir, VA: Defense Technical Information Center, January 2004. http://dx.doi.org/10.21236/ada422682.

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Reeves, Robert, Joseph Tringe, Darby Makel, and Susana Carranza. Development of Powder Bed Printing (3DP) For Rapid and Flexible Fabrication of Energetic Material Payloads and Munitions Final Report CRADA No. TC02250.0. Office of Scientific and Technical Information (OSTI), November 2017. http://dx.doi.org/10.2172/1419652.

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Reeves, R., J. Tringe, D. Makel, and S. Carranza. Development of Powder Bed Printing (3DP) For Rapid and Flexible Fabrication of Energetic Material Payloads and Munitions Final Report CRADA No. TC02250.0. Office of Scientific and Technical Information (OSTI), March 2021. http://dx.doi.org/10.2172/1774216.

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