keyword
MENU ▼
Read by QxMD icon Read
search

Reconstructive

keyword
https://www.readbyqxmd.com/read/28532119/poly-d-l-lactide-polycaprolactone-bioactive-glasss-nanocomposites-materials-for-anterior-cruciate-ligament-reconstruction-screws-the-effect-of-glass-surface-functionalization-on-mechanical-properties-and-cell-behaviors
#1
Javad Esmaeilzadeh, Saeed Hesaraki, Seyed Mohammad-Mehdi Hadavi, Mohammad Hosein Ebrahimzadeh, Masoud Esfandeh
In this paper, different nanocomposites made of a polymer blend (80% of PDLLA and 20% of PCL in w/w) and various amounts of a sol-gel derived bioactive glass nanoparticles (0, 1, 3 and 6wt%) were prepared using a solvent-evaporation technique. The morphology, mechanical properties and osteoblastic cell behaviors of the nanocomposites were evaluated. According to the early results, addition of bioactive glass nanoparticles to the polymer matrix reduced the tensile and flexural strength because of a non-uniform distribution of the nanoparticles...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532062/polylactide-and-polycaprolactone-based-substrates-enhance-angiogenic-potential-of-human-umbilical-cord-derived-mesenchymal-stem-cells-in-vitro-implications-for-cardiovascular-repair
#2
Małgorzata Sekuła, Patrycja Domalik-Pyzik, Anna Morawska-Chochół, Sylwia Bobis-Wozowicz, Elżbieta Karnas, Sylwia Noga, Dariusz Boruczkowski, Marta Adamiak, Zbigniew Madeja, Jan Chłopek, Ewa K Zuba-Surma
Recent approaches in tissue regeneration focus on combining innovative achievements of stem cell biology and biomaterial sciences to develop novel therapeutic strategies for patients. Growing recent evidence indicates that mesenchymal stem cells harvested from human umbilical cord Wharton's jelly (hUC-MSCs) are a new valuable source of cells for autologous as well as allogeneic therapies in humans. hUC-MSCs are multipotent, highly proliferating cells with prominent immunoregulatory activity. In this study, we evaluated the impact of widely used FDA approved poly(α-esters) including polylactide (PLA) and polycaprolactone (PCL) on selected biological properties of hUC-MSCs in vitro...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531346/projector-augmented-wave-method-incorporated-into-gauss-type-atomic-orbital-based-density-functional-theory
#3
Xiao-Gen Xiong, Takeshi Yanai
The Projector Augmented Wave (PAW) method developed by Blochl is well recognized as an efficient, accurate pseudopotential approach in solid-state density functional theory (DFT) calculations with plane-wave basis. Here we present an approach to incorporate the PAW method into the Gauss-type function (GTF) based DFT implementation, which is widely used for molecular quantum chemistry calculations. The nodal and high-exponent GTF components of valence molecular orbitals (MOs) are removed or pseudized by the ultrasoft PAW treatment, while there is elaborate transparency to construct accurate and well-controlled pseudopotential from all-electron atomic description and to reconstruct all-electron form of valence MOs from the pseudo MOs...
May 22, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28531221/human-paleodiet-and-animal-utilization-strategies-during-the-bronze-age-in-northwest-yunnan-province-southwest-china
#4
Lele Ren, Xin Li, Lihong Kang, Katherine Brunson, Honggao Liu, Weimiao Dong, Haiming Li, Rui Min, Xu Liu, Guanghui Dong
Reconstructing ancient diets and the use of animals and plants augment our understanding of how humans adapted to different environments. Yunnan Province in southwest China is ecologically and environmentally diverse. During the Neolithic and Bronze Age periods, this region was occupied by a variety of local culture groups with diverse subsistence systems and material culture. In this paper, we obtained carbon (δ13C) and nitrogen (δ15N) isotopic ratios from human and faunal remains in order to reconstruct human paleodiets and strategies for animal exploitation at the Bronze Age site of Shilinggang (ca...
2017: PloS One
https://www.readbyqxmd.com/read/28531204/messinian-age-and-savannah-environment-of-the-possible-hominin-graecopithecus-from-europe
#5
Madelaine Böhme, Nikolai Spassov, Martin Ebner, Denis Geraads, Latinka Hristova, Uwe Kirscher, Sabine Kötter, Ulf Linnemann, Jérôme Prieto, Socrates Roussiakis, George Theodorou, Gregor Uhlig, Michael Winklhofer
Dating fossil hominids and reconstructing their environments is critically important for understanding human evolution. Here we date the potentially oldest hominin, Graecopithecus freybergi from Europe and constrain the environmental conditions under which it thrived. For the Graecopithecus-bearing Pikermi Formation of Attica/Greece, a saline aeolian dust deposit of North African (Sahara) provenance, we obtain an age of 7.37-7.11 Ma, which is coeval with a dramatic cooling in the Mediterranean region at the Tortonian-Messinian transition...
2017: PloS One
https://www.readbyqxmd.com/read/28531170/potential-hominin-affinities-of-graecopithecus-from-the-late-miocene-of-europe
#6
Jochen Fuss, Nikolai Spassov, David R Begun, Madelaine Böhme
The split of our own clade from the Panini is undocumented in the fossil record. To fill this gap we investigated the dentognathic morphology of Graecopithecus freybergi from Pyrgos Vassilissis (Greece) and cf. Graecopithecus sp. from Azmaka (Bulgaria), using new μCT and 3D reconstructions of the two known specimens. Pyrgos Vassilissis and Azmaka are currently dated to the early Messinian at 7.175 Ma and 7.24 Ma. Mainly based on its external preservation and the previously vague dating, Graecopithecus is often referred to as nomen dubium...
2017: PloS One
https://www.readbyqxmd.com/read/28530904/wiring-variations-that-enable-and-constrain-neural-computation-in-a-sensory-microcircuit
#7
William F Tobin, Rachel I Wilson, Wei-Chung Allen Lee
Neural network function can be shaped by varying the strength of synaptic connections. One way to achieve this is to vary connection structure. To investigate how structural variation among synaptic connections might affect neural computation, we examined primary afferent connections in the Drosophila olfactory system. We used large-scale serial section electron microscopy to reconstruct all the olfactory receptor neuron (ORN) axons that target a left-right pair of glomeruli, as well as all the projection neurons (PNs) postsynaptic to these ORNs...
May 22, 2017: ELife
https://www.readbyqxmd.com/read/28530851/chondral-injuries-and-irreparable-meniscal-tears-among-adolescents-with-anterior-cruciate-ligament-or-meniscal-tears-are-more-common-in-patients-with-public-insurance
#8
Ariel A Williams, Nickolas S Mancini, Matthew J Solomito, Carl W Nissen, Matthew D Milewski
BACKGROUND: Access to health care services is a critical component of health care reform and may differ among patients with different types of insurance. Hypothesis/Purpose: The purpose was to compare adolescents with private and public insurance undergoing surgery for anterior cruciate ligament (ACL) and/or meniscal tears. We hypothesized that patients with public insurance would have a delayed presentation from the time of injury and therefore would have a higher incidence of chondral injuries and irreparable meniscal tears and lower preoperative International Knee Documentation Committee (IKDC) scores than patients with private insurance...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28530783/a-rare-case-of-obscure-gastrointestinal-bleeding-small-bowel-varices-flowing-into-the-inferior-epigastric-vein
#9
Akira Hoshiai, Junya Tsurukiri, Yasuhiro Sumi
Ectopic varices include all varices except esophageal or gastric varices and comprise large portosystemic venous collaterals that occur anywhere in the abdomen. Ectopic varices are relatively rare; however, approximately 5% are related to gastrointestinal bleeding. Ectopic varices usually occur in the rectum, duodenum, or colon, and portal hypertension is the most common cause. Hemodynamic profiles of ectopic varices remain unknown, and extensive bleeding from these structures occurs because diagnosis and treatment are difficult...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28530631/-editorial-urinary-tract-laparoscopic-reconstructive-surgery
#10
Ignacio T Castillón-Vela
No abstract text is available yet for this article.
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530623/-laparoscopic-boari-flap-ureteral-reimplantation
#11
Ignacio Castilló-Vela, Gema Del Pozo Jiménez, Jorge Turo Antona, David Vázquez Alba, Javier Sáenz Medina, Joaquín Carballido Rodríguez
OBJECTIVES: To report our initial experience with laparoscopic Boari flap ureteral reimplantation and to review the main technical elements in ureteral reconstructive surgery. METHODS: In a 10-year period we performed 23 laparoscopic ureteral reimplantations. Three cases required a Boari flap. Two patients presented ureteral stenosis above the iliac vessels and the third one a urothelial tumor of the pelvic ureter. RESULTS: Two cases were completed laparoscopically; the third one was electively converted to open surgery to avoid prolonged OR time...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530621/-laparoscopic-ureteral-reimplantation-in-the-treatment-of-urinary-tract-complications-after-renal-transplantation
#12
Juan Soto Villalba, Jesús Rosety Rodríguez, Cristina León Delgado, María José Ledo Cepero, Patricia Parra Serván, José Luis Álvarez-Ossorio Fernández
OBJECTIVES: Laparoscopic ureteral reconstructive surgery is routinely performed , because it demonstrated efficacy and safety profiles similar to open surgery in expert hands. The most frequent surgical complications after transplant are urological, appearing in up to 12,5% of the cases; they can compromise graft function and mortality. The most frequent ones include ureterovesical anastomosis stenosis (2,5-7,5%) and vesicoureteral reflux (0,4-2,2), which present in up to 80% of the cases...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530619/-current-status-of-laparoscopic-sacrocolpopexy-in-the-treatment-of-pelvic-organ-prolapse
#13
Carmen González-Enguita, Natalia Gennaro-DellaRossa, Esther López-López, Juliana Escobar-Castaño, Percy Miguel Rodríguez-Castro, Raquel González-López
OBJECTIVES: Surgical restoration of pelvic floor anatomy in pelvic organ prolapse (POP) should avoid extensive areas that may injure healthy tissues and lead to scar fibrosis producing dysfunctional rigidity. Laparoscopic sacrocolpopexy corrects POP by lifting pelvic elements with a minimally invasive procedure.Various current strategies and approaches make it a diverse procedure. METHODS: We performed a bibliographic review on the published experience about abdominal sacrocolpopexy over the last 20 years...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530617/-principles-of-urinary-tract-reconstructive-surgery
#14
Juan Gomez Rivas, Jesús Cisneros Ledo
INTRODUCTION: In the last 15 years, the role of laparoscopic surgery has progressively increased to include reconstructive procedures such as pyeloplasty and management of ureteral stricture, in addition to being a field in continuous development, this refers to the improvement of ergonomics, new instruments and new techniques. We present a review on basic features of laparoscopic reconstructive surgery in urology. ACQUISITION OF EVIDENCE: For this review, an exhaustive literature search was performed in PUBMED, MEDILNE, BioMed central and others, with the keywords: reconstructive surgery, urology, laparoscopy...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28530484/in%C3%A2-vivo-geometry-of-the-kissing-stent-and-covered-endovascular-reconstruction-of-the-aortic-bifurcation-configurations-in-aortoiliac-occlusive-disease
#15
Erik Groot Jebbink, Thijs G Ter Mors, Cornelis H Slump, Robert H Geelkerken, Suzanne Holewijn, Michel Mpj Reijnen
Objectives Various configurations of kissing stent (KS) configurations exist and patency rates vary. In response the covered endovascular reconstruction of the aortic bifurcation configuration was designed to minimize mismatch and improve outcome. The aim of the current study is to compare geometrical mismatch of kissing stent with the covered endovascular reconstruction of the aortic bifurcation configuration in vivo. Methods Post-operative computed tomographic data and patient demographics from 11 covered endovascular reconstruction of the aortic bifurcation and 11 matched kissing stent patients were included...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28530258/enhanced-recovery-program-erp-in-major-laryngeal-surgery-building-a-protocol-and-testing-its-feasibility
#16
M Gemma, S Toma, F Lira Luce, L Beretta, M Braga, M Bussi
Enhanced recovery programs (ERP) represent a multimodal approach to perioperative patient care. The benefits of ERP are well demonstrated in colorectal surgery and Enhanced Recovery After Surgery (ERAS®) programs, that epitomise the ERP concept, have being introduced in different specialties, including vascular, gastric, pancreatic, urogynecologic and orthopaedic surgery. However, no ERP has been proposed for head and neck surgery. We developed an expert-opinion-based ERP for laryngeal surgery based on the key principles of colorectal surgery ERAS®...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28530218/visualization-of-penile-suspensory-ligamentous-system-based-on-visible-human-data-sets
#17
Xianzhuo Chen, Yi Wu, Ling Tao, Yan Yan, Jun Pang, Shaoxiang Zhang, Shirong Li
BACKGROUND The aim of this study was to use a three-dimensional (3D) visualization technology to illustrate and describe the anatomical features of the penile suspensory ligamentous system based on the Visible Human data sets and to explore the suspensory mechanism of the penis for the further improvement of the penis-lengthening surgery. MATERIAL AND METHODS Cross-sectional images retrieved from the first Chinese Visible Human (CVH-1), third Chinese Visible Human (CVH-3), and Visible Human Male (VHM) data sets were used to segment the suspensory ligamentous system and its adjacent structures...
May 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28530209/reproducible-3d-printed-head-tanks-for-electrical-impedance-tomography-with-realistic-shape-and-conductivity-distribution
#18
James Avery, Kirill Aristovich, Barney Low, David Holder
OBJECTIVE: Electrical impedance tomography (EIT) has many promising applications in brain injury monitoring. To evaluate both instrumentation and reconstruction algorithms, experiments are first performed in head tanks. Existing methods, whilst accurate, produce a discontinuous conductivity, and are often made by hand, making it hard for other researchers to replicate. APPROACH: We have developed a method for constructing head tanks directly in a 3D printer. Conductivity was controlled through perforations in the skull surface, which allow for saline to pass through...
May 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28530208/eit-imaging-of-admittivities-with-a-d-bar-method-and-spatial-prior-experimental-results-for-absolute-and-difference-imaging
#19
S J Hamilton
Electrical impedance tomography (EIT) is an emerging imaging modality that uses harmless electrical measurements taken on electrodes at a body's surface to recover information about the internal electrical conductivity and or permittivity. The image reconstruction task of EIT is a highly nonlinear inverse problem that is sensitive to noise and modeling errors making the image reconstruction task challenging. D-bar methods solve the nonlinear problem directly, bypassing the need for detailed and time-intensive forward models, to provide absolute (static) as well as time-difference EIT images...
May 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28530205/phantom-experiments-using-soft-prior-regularization-eit-for-breast-cancer-imaging
#20
Ethan K Murphy, Aditya Mahara, Xiaotian Wu, Ryan J Halter
OBJECTIVE: A soft-prior regularization (SR) electrical impedance tomography (EIT) technique for breast cancer imaging is described, which shows an ability to accurately reconstruct tumor/inclusion conductivity values within a dense breast model investigated using a cylindrical and a breast-shaped tank. APPROACH: The SR-EIT method relies on knowing the spatial location of a suspicious lesion initially detected from a second imaging modality. Standard approaches (using Laplace smoothing and total variation regularization) without prior structural information are unable to accurately reconstruct or detect the tumors...
June 2017: Physiological Measurement
keyword
keyword
5801
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"