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3-D Printing

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https://www.readbyqxmd.com/read/29447272/reduced-translucency-and-the-addition-of-black-patterns-increase-the-catch-of-the-greenhouse-whitefly-trialeurodes-vaporariorum-on-yellow-sticky-traps
#1
Clare Sampson, Anca D Covaci, James G C Hamilton, Nayem Hassan, Shakir Al-Zaidi, William D J Kirk
The greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) is a pest of a wide range of vegetable and ornamental crops in greenhouses around the world. Yellow sticky traps are highly attractive to flying adults and so are frequently used to monitor the pest. Our aim was to test whether changes in trap translucency or the addition of printed black patterns could increase the catch on yellow sticky traps in greenhouses. Field trials were carried out in commercial crops of strawberry and tomato under glass over three years...
2018: PloS One
https://www.readbyqxmd.com/read/29444286/techniques-to-ensure-accurate-targeting-for-delivery-of-awake-laser-interstitial-thermotherapy
#2
Dimitri Laurent, Seth F Oliveria, Michael Shang, Frank Bova, Rachel Freedman, Maryam Rahman
BACKGROUND: Magnetic resonance imaging (MRI) guided laser interstitial thermal therapy (LITT) is an emerging neurosurgical treatment modality that is typically performed under general anesthesia. We describe a novel workflow developed at the University of Florida to deliver LITT in conscious patients without the use of general anesthesia. OBJECTIVE: To describe a novel workflow for LITT implementation in the awake patient with equivalent treatment results when compared to procedures performed under general anesthesia...
February 10, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29433862/three-dimensionally-printed-bioactive-ceramic-scaffold-osseoconduction-across-critical-sized-mandibular-defects
#3
Christopher D Lopez, J Rodrigo Diaz-Siso, Lukasz Witek, Jonathan M Bekisz, Bruce N Cronstein, Andrea Torroni, Roberto L Flores, Eduardo D Rodriguez, Paulo G Coelho
BACKGROUND: Vascularized bone tissue transfer, commonly used to reconstruct large mandibular defects, is challenged by long operative times, extended hospital stay, donor-site morbidity, and resulting health care. 3D-printed osseoconductive tissue-engineered scaffolds may provide an alternative solution for reconstruction of significant mandibular defects. This pilot study presents a novel 3D-printed bioactive ceramic scaffold with osseoconductive properties to treat segmental mandibular defects in a rabbit model...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29433006/strains-in-trussed-spine-interbody-fusion-implants-are-modulated-by-load-and-design
#4
Jason P Caffrey, Eloy Alonso, Koichi Masuda, Jessee P Hunt, Cameron N Carmody, Timothy M Ganey, Robert L Sah
Titanium cages with 3-D printed trussed open-space architectures may provide an opportunity to deliver targeted mechanical behavior in spine interbody fusion devices. The ability to control mechanical strain, at levels known to stimulate an osteogenic response, to the fusion site could lead to development of optimized therapeutic implants that improve clinical outcomes. In this study, cages of varying design (1.00 mm or 0.75 mm diameter struts) were mechanically characterized and compared for multiple compressive load magnitudes in order to determine what impact certain design variables had on localized strain...
February 3, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29424152/-application-of-the-computer-assisted-virtual-reduction-combined-with-3d-printing-technique-in-acetabular-fractures
#5
Yu-Chen Wang, Yong Ma, Wei-Zhong Yu, Yun-Feng Li, Yan-Hui Liu
OBJECTIVE: To investigate the computer-assisted virtual reduction combined with 3D printing technique as preoperative planning and assess their therapeutic effects. METHODS: Thirty-five cases of acetabular fracture treated by internal fixation from March 2011 and March 2014 were retrospectively analyzed. All patients underwent operations with internal fixations implanted. The patients were divided into 2 groups according whether they used the computer-assisted virtual reduction combined with 3D printing technology...
July 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29415128/expression-iii-patient%C3%A2-s-expectations-and-preferences-regarding-physician-patient-relationship-and-clinical-management-results-of-the-international-noggo-engot-ov4-gcig-study-in-1-830-ovarian-cancer-patients-from-european-countries
#6
G Oskay-Özcelik, S Alavi, R Richter, M Keller, S C Cecere, G Cormio, F Joly, J E Kurtz, A du Bois, M Maciejewski, M Jedryka, I Vergote, E Van Nieuwenhuysen, A Casado, C Mendiola, P Achimas-Cadariu, C Vlad, D Reimer, A G Zeimet, M Friedlander, J Sehouli
Backround: The primary aim of this study was to investigate information needs and treatment preferences of patients with ovarian cancer, focusing especially on physician-patient relationship and treatment. Patients and methods: A questionnaire was developed based on the experiences of the national German survey Expression II, and was provided to patients with ovarian cancer either at initial diagnosis or with recurrent disease via Internet (online-version) or as print-out-version...
February 5, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29409167/three-dimensional-printing-enhances-preparation-for-repair-of-double-outlet-right-ventricular-surgery
#7
Liyun Zhao, Sijie Zhou, Taibing Fan, Bin Li, Weijie Liang, Haoju Dong
OBJECTIVE: To assess the clinical value of three-dimensional (3D) printing technology for treatment strategies for complex double outlet right ventricle (DORV). METHODS: Twenty-five patients with complex double outlet right ventricle were enrolled in this study. The patients were divided into two groups: 3D printing group (eight patients) and a non-3-D printing control group (17 patients). The cardiac images of patients in the 3D printing group were transformed to Digital Imaging and Communications and were segmented and reconstructed to create a heart model...
January 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29401368/three-dimensional-technologies-in-orthopedics
#8
Panayiotis J Papagelopoulos, Olga D Savvidou, Panagiotis Koutsouradis, George D Chloros, Ioanna K Bolia, Vasileios I Sakellariou, Vasileios A Kontogeorgakos, Ioannis I Mavrodontis, Andreas F Mavrogenis, Panos Diamantopoulos
New 3-dimensional digital technologies are revolutionizing orthopedic clinical practice, allowing structures of any complexity to be manufactured in just hours. Such technologies can make surgery for complex cases more precise, more cost-effective, and possibly easier to perform. Applications include pre-operative planning, surgical simulation, patient-specific instrumentation and implants, bioprinting, prosthetics, and orthotics. The basic principles of 3- dimensional technologies, including imaging, design, numerical simulation, and printing, and their current applications in orthopedics are reviewed...
January 1, 2018: Orthopedics
https://www.readbyqxmd.com/read/29396606/3d-printed-models-in-mandibular-reconstruction-with-bony-free-flaps
#9
Banaszewski Jacek, Pabiszczak Maciej, Pastusiak Tomasz, Buczkowska Agata, Kuczko Wiesław, Wichniarek Radosław, Górski Filip
The aim of the study was to compare two types of mandible reconstructive operations with scapula and fibula free flaps: procedures with 3-D models from thermoplastic materials and conventional planning surgeries. 8 patients were treated due to an advanced oral cavity squamous cell carcinoma. In four patients with a mandibular defect, a physical 3-D model consisting of the reconstructed and unaffected sites was prepared for a reconstruction protocol. The 3-D models were designed based to high resolution CT scans...
February 2, 2018: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29395314/endometrial-cancer-survivors-sleep-patterns-before-and-after-a-physical-activity-intervention-a-retrospective-cohort-analysis
#10
Shannon D Armbruster, Jaejoon Song, Leticia Gatus, Karen H Lu, Karen M Basen-Engquist
OBJECTIVE: To identify the baseline sleep patterns of endometrial cancer survivors and examine the impact of a physical activity intervention on their sleep quality via retrospective secondary analysis. METHODS: Early-stage endometrial cancer survivors participated in a 6-month single-arm exercise intervention using printed materials, telephone-based counseling, and pedometers to encourage adherence to exercise guidelines. Participants completed questionnaires evaluating their sleep (PSQI), physical activity (CHAMPS), quality of life (SF-36), and stress (PSS) at baseline and study completion...
January 30, 2018: Gynecologic Oncology
https://www.readbyqxmd.com/read/29385089/recent-advances-in-treatment-of-coronary-artery-disease-role-of-science-and-technology
#11
REVIEW
Eswar Kandaswamy, Li Zuo
Coronary artery disease (CAD) is one of the most common causes of death worldwide. In the last decade, significant advancements in CAD treatment have been made. The existing treatment is medical, surgical or a combination of both depending on the extent, severity and clinical presentation of CAD. The collaboration between different science disciplines such as biotechnology and tissue engineering has led to the development of novel therapeutic strategies such as stem cells, nanotechnology, robotic surgery and other advancements (3-D printing and drugs)...
January 31, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29375962/remarkable-enhancement-of-the-hole-mobility-in-several-organic-small-molecules-polymers-and-small-molecule-polymer-blend-transistors-by-simple-admixing-of-the-lewis-acid-p-dopant-b-c6f5-3
#12
Julianna Panidi, Alexandra F Paterson, Dongyoon Khim, Zhuping Fei, Yang Han, Leonidas Tsetseris, George Vourlias, Panos A Patsalas, Martin Heeney, Thomas D Anthopoulos
Improving the charge carrier mobility of solution-processable organic semiconductors is critical for the development of advanced organic thin-film transistors and their application in the emerging sector of printed electronics. Here, a simple method is reported for enhancing the hole mobility in a wide range of organic semiconductors, including small-molecules, polymers, and small-molecule:polymer blends, with the latter systems exhibiting the highest mobility. The method is simple and relies on admixing of the molecular Lewis acid B(C6F5)3 in the semiconductor formulation prior to solution deposition...
January 2018: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29375901/conjoined-twins-role-of-imaging-and-recent-advances
#13
Rishi Philip Mathew, Swati Francis, Ram Shenoy Basti, Hadihally B Suresh, Annie Rajarathnam, Prema D Cunha, Sujaya V Rao
Introduction: Conjoined twins are identical twins with fused bodies, joined in utero. They are rare complications of monochorionic twinning. The purpose of this study is to describe the various types of conjoined twins, the role of imaging and recent advances aiding in their management. Material and methods: This was a twin institutional study involving 3 cases of conjoined twins diagnosed over a period of 6 years from 2010 to 2015. All the 3 cases were identified antenatally by ultrasound...
December 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29370409/does-the-endometrial-gene-expression-of-fertile-women-vary-within-and-between-cycles
#14
Gloria E Evans, Gregory T M Phillipson, Peter H Sykes, Les A McNoe, Cristin G Print, John J Evans
STUDY QUESTION: Does gene expression of putative endometrial implantation markers vary in expression between menstrual cycles? SUMMARY ANSWER: In fertile women the expression of certain genes exhibits a pattern of stable regulation.which is not affected even when sampled twice in one cycle. WHAT IS KNOWN ALREADY: Successful implantation occurs in a minority of IVF embryo transfers. In contrast to knowledge regarding the ovulatory process, there is a sparse understanding of endometrial genes critical to implantation...
January 23, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29356372/rapid-generation-of-3-d-microchannels-for-vascularization-using-a-subtractive-printing-technique
#15
Stephanie R Burtch, Mahyar Sameti, Richard Ty Olmstead, Chris A Bashur
The development of tissue engineered products has been limited by lack of a perfused microvasculature that delivers nutrients and maintains cell viability. Current strategies to promote vascularization such as additive 3-D printing techniques have limitations. This study validates the use of an ultra-fast laser subtractive printing technique to generate capillary-sized channels in hydrogels pre-populated with cells by demonstrating cell viability relative to the photodisrupted channels in the gel. The system can move the focal spot laterally in the gel at a rate of 2,500 mm/s by using a galvanometric scanner to raster the in plane focal spot...
January 22, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29321464/microfluidic-paper-based-analytical-device-for-quantification-of-lead-using-reaction-band-length-for-identification-of-bullet-hole-and-its-potential-for-estimating-firing-distance
#16
Supatana Buking, Phoonthawee Saetear, Warawut Tiyapongpattana, Kanchana Uraisin, Prapin Wilairat, Duangjai Nacapricha, Nuanlaor Ratanawimarnwong
A low-cost and user-friendly microfluidic paper-based analytical device (μPAD) was developed for identification of bullet hole from gunshot residue (GSR) on cotton fabric target. The device (25 × 82 mm) is made of filter paper with a printed pattern consisting of a circular sample loading reservoir (6 mm i.d.), a circular waste reservoir (4 mm i.d.) and a straight flow channel (3 mm wide and 60 mm long). A sticker with a ruler scale in millimeters was mounted alongside the channel. The straight channel is first impregnated with rhodizonate and dried at ambient temperature...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/29320971/the-effect-of-nutritional-intervention-on-the-lipid-profile-and-dietary-intake-of-adolescents-with-juvenile-systemic-lupus-erythematosus-a-randomized-controlled-trial
#17
S G L da Silva, M T Terreri, T T O Abad, D Machado, F L A Fonseca, S Hix, F I Suano-Souza, R O S Sarni, C A Len
Objective This study sought to evaluate the effects of a nutritional intervention on the lipid metabolism biomarkers associated with cardiovascular risk, and their variation over time, in juvenile systemic lupus erythematosus (JSLE) patients. This study also investigated the relationships between these biomarkers and dietary intake, nutritional status, disease variables, and medication used. Methods A total of 31 10- to 19-year-old female adolescents with JSLE for at least six months were analyzed. The participants were randomly allocated to two groups: nutritional intervention or control...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29317379/effect-of-a-gender-tailored-ehealth-weight-loss-program-on-the-depressive-symptoms-of-overweight-and-obese-men-pre-post-study
#18
Myles D Young, Philip J Morgan
BACKGROUND: Obesity and depression are of two of the largest contributors to the global burden of disease in men. Although lifestyle behavior change programs can improve participants' weight and depressive symptoms, the evidence is limited by a lack of male participants and a reliance on face-to-face treatment approaches, which are not accessible or appealing for many men. OBJECTIVE: This study examined the effect of a gender-tailored electronic health (eHealth) program on the depressive symptoms of a community sample of overweight and obese men with or without depression...
January 9, 2018: JMIR Mental Health
https://www.readbyqxmd.com/read/29301087/localized-3-d-functionalization-of-bionanoreceptors-on-high-density-micropillar-arrays-via-electrowetting
#19
Sangwook Chu, Thomas E Winkler, Adam Degen Brown, James N Culver, Reza Ghodssi
In this work, we introduce an electrowetting-assisted 3-D biofabrication process allowing both complete and localized functionalization of bionanoreceptors onto densely arranged 3-D microstructures. Integration of biomaterials with three-dimensional (3-D) microdevice components offers exciting opportunities for communities developing miniature bioelectronics with enhanced performances and advanced modes of operation. However, most biological materials are stable only in properly conditioned aqueous solutions, thus the water-repellent properties exhibited by densely arranged micro-/nano- structures (widely known as the Cassie-Baxter state) represent a significant challenge to biomaterial integration...
January 4, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29300411/customizing-polyelectrolyte-complex-shapes-through-photolithographic-directed-assembly
#20
Udaka K de Silva, Kunal Choudhuri, Amanda C Bryant-Friedrich, Yakov Lapitsky
Polyelectrolyte complexes (PECs) form through the association of oppositely charged polymers and, due to their attractive properties, such as their mild/simple preparation and stimulus-sensitivity, attract widespread interest. The diverse applications of these materials often require control over PEC shapes. As a versatile approach to achieving such control, we report a new photolithographic directed assembly method for tailoring their structure. This method uses aqueous solutions of a polyelectrolyte, an oppositely charged monomer and a photoinitiator...
January 4, 2018: Soft Matter
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