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"Component separation"

Alexandra M Moore, Lisa N Anderson, David C Chen
INTRODUCTION: Minimally invasive laparoscopic and robotic techniques for ventral hernia repair have evolved to achieve the benefits and minimize the limitations of both the open Rives-Stoppa sublay mesh repair and laparoscopic intraperitoneal onlay mesh (IPOM) repair. By combining the principles of a retromuscular repair with the benefits of a minimally invasive approach, these techniques attempt to decrease recurrence, increase functionality, exclude mesh from the viscera, limit infection and wound complications, and minimize pain...
October 6, 2016: Surgical Technology International
Ahmed B Soliman, Rana R Haikal, Youssef S Hassan, Mohamed H Alkordi
A one-pot, bottom-up assembly of a pyrimidine-containing porous-organic polymer (PyPOP) was conducted to homogenously deposit the PyPOP atop unmodified graphene sheets, affording a composite material PyPOP@G. The PyPOP demonstrated an appreciable affinity toward CO2 capture but was found to be largely insulating, hindering its usage in potential electrochemical conversion of CO2. However, its composite with graphene was found to be microporous, with maintained affinity toward CO2 and furthermore demonstrated significant electrochemical activity toward CO2 reduction (5 mA cm(-2) at -1...
October 4, 2016: Chemical Communications: Chem Comm
Salvatore Giordano, Patrick B Garvey, Donald P Baumann, Jun Liu, Charles E Butler
BACKGROUND: Prior abdominal wall radiotherapy (XRT) adversely affects wound healing, but data are limited on how prior XRT may affect abdominal wall reconstruction (AWR) outcomes. The purpose of this study was to determine whether prior abdominal wall radiotherapy is associated with a higher incidence of complications following AWR for a hernia or oncologic resection defect. METHODS: We performed a retrospective study of consecutive patients who underwent complex AWR using acellular dermal matrix (ADM) at a single center...
September 30, 2016: Annals of Surgical Oncology
Nanwei Chen, Jie Ren, Ziwei Ye, Qizhi Xu, Jingyong Liu, Shuiyu Sun
This study was carried out to investigate the kinetics of coffee industrial residue (CIR) pyrolysis, the effect of pyrolysis factors on yield of bio-oil component and components separation of bio-oil. The kinetics of CIR pyrolysis was analyzed using distributed activation energy model (DAEM), based on the experiments in thermogravimetric analyzer (TGA), and it indicated that the average of activation energy (E) is 187.86kJ·mol(-1). The bio-oils were prepared from CIR pyrolysis in vacuum tube furnace, and its components were determined by gas chromatography/mass spectrometry (GC-MS)...
December 2016: Bioresource Technology
Dustin Y Yoon, Scott A Resnick, Mark K Eskandari, Heron E Rodriguez
No abstract text is available yet for this article.
October 2016: Journal of Vascular Surgery
Mikhail Zubkov, Timothy Stait-Gardner, William S Price
Quantitative MRI is often used to analyse multicomponent systems. The analysis requires the contributions from different species to be isolated. Species with distinct chemical shifts can be separated by using a low acquisition bandwidth, which is easy to achieve in common quantitative imaging protocols. The bandwidth reduction leads to separation of NMR contributions from different species in the image space. This new method was implemented and tested on two multicomponent systems containing several spectrally and spatially unresolved components with both distinctly different and similar diffusion coefficients and relaxation times...
September 6, 2016: Magnetic Resonance in Chemistry: MRC
Dahui Qin, Zhong Zheng, Shanxiang Shen, Prudence Smith, Farah K Khalil
Microdissection is a useful method in tissue sampling prior to molecular testing. Tumor heterogeneity imposes new challenges for tissue sampling. Different microdissecting methods have been employed in face of such challenge. We improved our microdissection method by separately microdissecting the morphologically different tumor components. This improvement helped the pyrosequencing data analysis of two specimens. One specimen consisted of both adenocarcinoma and neuroendocrine components. When both tumor components were sequenced together for KRAS (Kirsten rat sarcoma viral oncogene homolog) gene mutations, the resulting pyrogram indicated that it was not a wild type, suggesting that it contained KRAS mutation...
2016: BioMed Research International
Josep M Llibre, Elisa de Lazzari, Jean-Michel Molina, Sébastien Gallien, Juan Gonzalez-García, Arkaitz Imaz, Daniel Podzamczer, Bonaventura Clotet, Pere Domingo, Josep M Gatell
OBJECTIVE: To evaluate the efficiency of single-tablet regimens (STR) and multiple-tablet regimens (MTR) with exactly the same or different components. METHODS: A study was conducted on HIV-1-infected antiretroviral-naïve patients from 6 Spanish or French centers, who were started on treatment with STR-Atripla(®), or the same components separately (MTR-SC), or a different MTR (MTR-Other). Effectiveness was measured as percentage of HIV-RNA <50copies/mL at 48 weeks (ITT)...
August 29, 2016: Enfermedades Infecciosas y Microbiología Clínica
Vikalp Jain, Peter Banga, Raghuveer Vallabhaneni, Matthew Eagleton, Gustavo Oderich, Mark A Farber
BACKGROUND/OBJECTIVE: Open aortoiliac grafts have typically been constructed with a short aortic bifurcation sewn near or to the visceral vessels to avoid limb kinking. Similarly, the majority of endovascular bifurcated stent grafts have short aortic main body ranging from 3 to 5 cm. In these patients, endovascular salvage with fenestrated stent grafts is technically challenging because of the short distance between the renal arteries and the flow divider of the graft. Custom fenestrated stent grafts can be extended into the prior open surgical graft or stent graft using a short distal bifurcated stent graft with inverted iliac limb for the contralateral gate...
September 2016: Journal of Vascular Surgery
Caitlin W Hicks, Katherine E Poruk, Pablo A Baltodano, Kevin C Soares, Said C Azoury, Carisa M Cooney, Peter Cornell, Frederic E Eckhauser
BACKGROUND: Sandwich ventral hernia repair (SVHR) may reduce ventral hernia recurrence rates, although with an increased risk of surgical site occurrences (SSOs) and surgical site infections (SSIs). Previously, we found that a modified negative pressure wound therapy (hybrid vacuum-assisted closure [HVAC]) system reduced SSOs and SSIs after ventral hernia repair. We aimed to describe our outcomes after SVHR paired with HVAC closure. METHODS: We conducted a 4-y retrospective review of all complex SVHRs (biologic mesh underlay and synthetic mesh overlay) with HVAC closure performed at our institution by a single surgeon...
August 2016: Journal of Surgical Research
Elizabeth C Kozak, George W Uetz
Cross-modal integration, i.e., cognitive binding of information transmitted in more than one signal mode, is important in animal communication, especially in complex, noisy environments in which signals of many individuals may overlap. Males of the brush-legged wolf spider Schizocosa ocreata (Hentz) use multimodal communication (visual and vibratory signals) in courtship. Because females may be courted by multiple males at the same time, they must evaluate co-occurring male signals originating from separate locations...
November 2016: Animal Cognition
Osvaldo Chiara, Stefania Cimbanassi, Walter Biffl, Ari Leppaniemi, Sharon Henry, Thomas M Scalea, Fausto Catena, Luca Ansaloni, Arturo Chieregato, Elvio de Blasio, Giorgio Gambale, Giovanni Gordini, Guiseppe Nardi, Pietro Paldalino, Francesco Gossetti, Paolo Dionigi, Giuseppe Noschese, Gregorio Tugnoli, Sergio Ribaldi, Sebastian Sgardello, Stefano Magnone, Stefano Rausei, Anna Mariani, Francesca Mengoli, Salomone di Saverio, Maurizio Castriconi, Federico Coccolini, Joseph Negreanu, Salvatore Razzi, Carlo Coniglio, Francesco Morelli, Maurizio Buonanno, Monica Lippi, Liliana Trotta, Annalisa Volpi, Luca Fattori, Mauro Zago, Paolo de Rai, Fabrizio Sammartano, Roberto Manfredi, Emiliano Cingolani
BACKGROUND: A part of damage-control laparotomy is to leave the fascial edges and the skin open to avoid abdominal compartment syndrome and allow further explorations. This condition, known as open abdomen (OA), although effective, is associated with severe complications. Our aim was to develop evidence-based recommendations to define indications for OA, techniques for temporary abdominal closure, management of enteric fistulas, and methods of definitive wall closure. METHODS: The literature from 1990 to 2014 was systematically screened according to PRISMA [Preferred Reporting Items for Systematic Reviews and Meta-analyses] protocol...
January 2016: Journal of Trauma and Acute Care Surgery
Zongli Sun, Qiang Gu
The component separation of the trapped large-spin Fermi gas is studied within density functional theory. The ground state and ferromagnetic transition in the gas, with and without the spin mixing collision, are calculated. In the absence of spin mixing, two patterns of separation are observed as the interaction between atoms increases, whereas only one of them corresponds to a ferromagnetic transition. The phase diagram suggests that the pattern which the system chooses depends on the interaction strength in the collision channels...
2016: Scientific Reports
Nergis Nina Suleiman, Lars Johan Marcus Sandberg
Symptomatic heterotopic ossification of abdominal surgical incisions is a rare occurrence. We present a 67-year-old man with severe discomfort caused by heterotopic ossification extending from the xiphoid to the umbilicus. The patient underwent an abdominal aortic aneurysm repair 3 years before our treatment. A 13 × 3.5 cm ossified lesion was excised. The resulting midline defect was closed using component separation and inlay Strattice. Tension-free midline adaptation of the recti muscles was achieved...
July 2016: Plastic and Reconstructive Surgery. Global Open
J Zhou
Autologous blood transfusion (ABT) has been gradually attracting more attention due to the increasingly prominent problem of blood transfusion safety and blood shortage in recent years. With the rapid development of blood conservation techniques, blood component separation technology, blood transfusion medicine and a constant increase in clinical needs, ABT technology has been expanded and innovated to a large degree. In this study, the development of preoperative autologous blood donation (PABD), acute normovolemic hemodilution (ANH), intraoperative and postoperative autotransfusion, and other new technologies and theories are reviewed and existing questions are analyzed...
August 1, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
M Kääriäinen, M Kuuskeri, M Helminen, H Kuokkanen
BACKGROUND AND AIMS: The open abdomen technique is a standard procedure in the treatment of intra-abdominal catastrophe. Achieving primary abdominal closure within the initial hospitalization is a main objective. This study aimed to analyze the success of closure rate and the effect of negative pressure wound therapy, mesh-mediated medial traction, and component separation on the results. We present the treatment algorithm used in our institution in open abdomen situations based on these findings...
August 15, 2016: Scandinavian Journal of Surgery: SJS
Ciara R Huntington, Tiffany C Cox, Laurel J Blair, Samuel Schell, David Randolph, Tanushree Prasad, Amy Lincourt, B Todd Heniford, Vedra A Augenstein
BACKGROUND: Biologic mesh choice in ventral hernia repair is challenging due to lack of prospective data. This study examines long-term, single-center biologic mesh outcomes. METHODS: Prospective operative outcomes data was queried for open ventral hernia repair with biologic mesh. Univariate and multivariate analysis were used to compare mesh outcomes. RESULTS: In the study, 223 patients underwent open ventral hernia repair with biologic mesh, including 40 with Alloderm, 23 AlloMax, 70 FlexHD, 68 Strattice, and 22 Xenmatrix...
August 12, 2016: Surgery
N D Appleton, K D Anderson, K Hancock, M H Scott, C J Walsh
INTRODUCTION Large, complicated ventral hernias are an increasingly common problem. The transversus abdominis muscle release (TAMR) is a recently described modification of posterior components separation for repair of such hernias. We describe our initial experience with TAMR and sublay mesh to facilitate abdominal wall reconstruction. METHODS The study is a retrospective review of patients undergoing TAMR performed synchronously by gastrointestinal and plastic surgeons. RESULTS Twelve consecutive patients had their ventral hernias repaired using the TAMR technique from June 2013 to June 2014...
August 11, 2016: Annals of the Royal College of Surgeons of England
Alexandre Balaphas, Philippe Morel, Romain Breguet, Michela Assalino
Giant hernias with loss of domain induce physiological modifications that impair quality of life and make more complex their surgical management. A good preparation of patients before surgery is the key to an eventless postoperative course. The progressive pre-operative pneumoperitoneum (PPP) is one of the described abdominal augmentation protocols which can help patients to tolerate hernia content reintegration and avoid components separation technique during hernia repair. This article describes the management of these complex patients...
June 15, 2016: Revue Médicale Suisse
Yu-Ru Su, Chong-Zhi Di, Li Hsu
SummaryThe development of next-generation sequencing technologies has allowed researchers to study comprehensively the contribution of genetic variation particularly rare variants to complex diseases. To date many sequencing analyses of rare variants have focused on marginal genetic effects and have not explored the potential role environmental factors play in modifying genetic risk. Analysis of gene-environment interaction (GxE) for rare variants poses considerable challenges because of variant rarity and paucity of subjects who carry the variants while being exposed...
July 28, 2016: Biostatistics
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