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"Component separation"

Jagadesh Ramaiah, Pramod Rastogi, Gannavarpu Rajshekhar
This paper presents a method for extracting multiple phases from a single moire fringe pattern in digital holographic interferometry. The method relies on component separation using singular value decomposition and an extended Kalman filter for demodulating the moire fringes. The Kalman filter is applied by modeling the interference field locally as a multi-component polynomial phase signal and extracting the associated multiple polynomial coefficients using the state space approach. In addition to phase, the corresponding multiple phase derivatives can be simultaneously extracted using the proposed method...
March 10, 2018: Applied Optics
J D Hodgkinson, C A Leo, Y Maeda, P Bassett, S M Oke, C J Vaizey, J Warusavitarne
PURPOSE: This study aims to compare the outcomes of posterior component separation and transversus abdominis release (PCSTAR) with the open anterior component separation (OACS) technique. OACS, first described by Ramirez et al. (Plast Reconstr Surg 86(3):519-526, 1990), has become an established technique for local myofascial advancement in abdominal hernia surgery. PCSTAR, described by Novitsky et al. (Am J Surg 204(5):709-716, 2012), is being used more frequently and is rapidly becoming the technique of choice in complex ventral hernia repair...
March 7, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Alvaro Robin-Lersundi, Luis Blazquez Hernando, Javier López-Monclús, Arturo Cruz Cidoncha, Carlos San Miguel Méndez, Elena Jimenez Cubedo, Miguel Angel García-Ureña
BACKGROUND: Posterior component separation with transversus abdominis release technique is increasingly being used for abdominal wall reconstruction in complex abdominal wall repair. The main purpose of this study is to present a modification of the surgical technique originally described that facilitates the surgical procedure and offers additional advantages. METHODS: Based on the knowledge of the anatomy of the retromuscular space and the preperitoneal aerolar tissue distribution, we start the incision on the posterior rectus sheath from the arcuate line in a down to up direction...
March 3, 2018: Langenbeck's Archives of Surgery
Ramana Balsubramanian
No abstract text is available yet for this article.
February 27, 2018: Journal of Minimal Access Surgery
Brian Hill, Rohan Kambeyanda, Donna Fewell, Stewart Bryant, Kevin O Delaney, Fernando A Herrera
PURPOSE: In this study, we reviewed our institution's experience using component separation for repair of ventral hernias. METHODS: This was a retrospective review of all component separations for ventral hernia between July 2009 and December 2015. Recorded data included body mass index (BMI), preoperative albumin, smoking history, comorbidities, additional procedures, length of surgery, hospitalization, recurrence, and postoperative complications. RESULTS: One hundred ninety-six component separations were performed in the study period...
February 23, 2018: Annals of Plastic Surgery
Md Imran H Khan, Szilvia Anett Nagy, M A Karim
The cellular structure of food tissue is complex, and it is difficult to understand the morphological changes during drying. Three different cellular environments, namely intracellular space, intercellular space, and cell wall in food tissue contain a different proportion of water. It is crucial to understand the moisture migration mechanisms from different cellular environments during drying for improving energy efficiency and for ensuring better quality dried foods. Due to the lack of sufficient understanding of transport mechanisms of different types of water, existing mathematical models for food drying have been developed without considering these components separately...
March 2018: Food Research International
Z Song, D Yang, J Yang, X Nie, J Wu, H Song, Y Gu
PURPOSE: Abdominal wall defects caused by neoplasms with large extended resection defects remain a challenging problem. Autologous flaps, meshes, and component separation techniques are effective in reconstructing these defects. We retrospectively reviewed and assessed the success of reconstruction using tensor fascia lata flap with or without meshes. METHODS: 18 patients with abdominal wall neoplasms were identified during the period from 2007 to 2016. A retrospective review of office charts and hospital records was performed...
February 7, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Christopher J Russo, Richard Henderson
Curvature of the Ewald sphere limits the resolution at which Fourier components in an image can be approximated as corresponding to a projection of the object. Since the radius of the Ewald sphere is inversely proportional to the wavelength of the imaging electrons, this normally imposes a limit on the thickness of specimen for which images can be easily interpreted to a particular resolution. Here we present a computational method for precisely correcting for the curvature of the Ewald sphere using defocused images that delocalise the high-resolution Fourier components from the primary image...
January 12, 2018: Ultramicroscopy
Hugo Palma Rios, André Goulart, Pedro Leão
INTRODUCTION: Performing surgery on patients with Crohn's disease is a true challenge due to the elevated risk of complications related to the chronic proinflammatory response. Stenosis is the leading cause of intestinal resection in these patients. CASE REPORT: The authors present the case of a 50-year-old woman with inflammatory stenosis of the terminal ileum due to Crohn's disease. The patient underwent a laparoscopic ileocecal resection, which was complicated by a small anastomotic dehiscence with localized peritonitis...
January 2018: Wounds: a Compendium of Clinical Research and Practice
Jill Smolevitz, Richard Jacobson, Milot Thaqi, Samantha Millikan, Keith W Millikan
BACKGROUND: Consensus guidelines recommend against elective ventral hernia repair (VHR) in patients with BMI >30 kg/m2 without preoperative weight loss intervention. We aim to compare hernia recurrence and perioperative complications in VHR utilizing anterior component separation (CS) in patients with class III obesity (BMI >40 kg/m2). METHODS: A retrospective review of patients undergoing VHR with CS was performed. The primary endpoint was hernia recurrence; secondary endpoints were wound complications, postoperative medical complications, mortality and length of stay...
November 11, 2017: American Journal of Surgery
F Köckerling, N N Alam, S A Antoniou, I R Daniels, F Famiglietti, R H Fortelny, M M Heiss, F Kallinowski, I Kyle-Leinhase, F Mayer, M Miserez, A Montgomery, S Morales-Conde, F Muysoms, S K Narang, A Petter-Puchner, W Reinpold, H Scheuerlein, M Smietanski, B Stechemesser, C Strey, G Woeste, N J Smart
INTRODUCTION: Although many surgeons have adopted the use of biologic and biosynthetic meshes in complex abdominal wall hernia repair, others have questioned the use of these products. Criticism is addressed in several review articles on the poor standard of studies reporting on the use of biologic meshes for different abdominal wall repairs. The aim of this consensus review is to conduct an evidence-based analysis of the efficacy of biologic and biosynthetic meshes in predefined clinical situations...
January 31, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Meng-Xin Hu, Xiang Li, Ji-Nian Li, Jing-Jing Huang, Ge-Rui Ren
Polymer brushes modified surfaces have been widely used for protein immobilization and isolation. Modification of membranes with polymer brushes increases the surface concentration of affinity ligands used for protein binding. Albumin is one of the transporting proteins and shows a high affinity to bile acids. In this work, the modified membranes with cholic acid-containing polymer brushes can be facilely prepared by the immobilization of cholic acid on the poly(2-hydroxyethyl methacrylate) grafted microporous polypropylene membranes (MPPMs) for affinity adsorption of albumin...
January 19, 2018: Journal of Chromatography. A
J S Winder, A Majumder, M Fayezizadeh, Y W Novitsky, E M Pauli
BACKGROUND: A minority of patients undergoing posterior component separation (PCS) have abdominal wall defects that preclude complete reconstruction of the visceral sac with native tissue. The use of absorbable mesh bridges (AMB) to span such defects has not been established. We hypothesized that AMB use during posterior sheath closure of PCS is safe and provides favorable outcomes. METHODS: We performed a retrospective review of consecutive patients undergoing PCS with AMB at two hernia centers...
January 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Enrique Lomba, Jean-Jacques Weis, Salvatore Torquato
We study the behavior of a classical two-component ionic plasma made up of nonadditive hard disks with additional logarithmic Coulomb interactions between them. Due to the Coulomb repulsion, long-wavelength total density fluctuations are suppressed and the system is globally hyperuniform. Short-range volume effects lead to phase separation or to heterocoordination for positive or negative nonadditivities, respectively. These effects compete with the hidden long-range order imposed by hyperuniformity. As a result, the critical behavior of the mixture is modified, with long-wavelength concentration fluctuations partially damped when the system is charged...
December 2017: Physical Review. E
R B Onzima, M R Upadhyay, R Mukiibi, E Kanis, M A M Groenen, R P M A Crooijmans
Uganda has a large population of goats, predominantly from indigenous breeds reared in diverse production systems, whose existence is threatened by crossbreeding with exotic Boer goats. Knowledge about the genetic characteristics and relationships among these Ugandan goat breeds and the potential admixture with Boer goats is still limited. Using a medium-density single nucleotide polymorphism (SNP) panel, we assessed the genetic diversity, population structure and admixture in six goat breeds in Uganda: Boer, Karamojong, Kigezi, Mubende, Small East African and Sebei...
January 17, 2018: Animal Genetics
Julio Gómez-Menchero, Juan Francisco Guadalajara Jurado, Juan Manuel Suárez Grau, Juan Antonio Bellido Luque, Joaquin Luis García Moreno, Isaías Alarcón Del Agua, Salvador Morales-Conde
BACKGROUND: Closing the defect (CD) during laparoscopic ventral hernia repair began to be performed in order to decrease seroma, to improve the functionality of the abdominal wall, and to decrease the bulging effect. However, tension at the incision after CD in large defects is related to an increased rate of pain and recurrence. We present the preliminary results of a new technique for medium midline hernias as an alternative to conventional CD. METHODS: A prospective controlled study was conducted from January 2015 to January 2017 to evaluate an elective new procedure (LIRA) performed on patients with midline ventral hernias (4-10 cm width)...
January 17, 2018: Surgical Endoscopy
Colton H L McNichols, Silviu Diaconu, Yuanyuan Liang, Eseigboria Ikheloa, Shivum Kumar, Saahil Kumar, Arthur Nam, Yvonne Rasko
PURPOSE: Combined ventral hernia repair and panniculectomy (VHR/PAN) is controversial, and the safety profile including anticipated complications has been questioned. We present a retrospective case series review of patients from the University of Maryland Medical Center to help surgeons counsel patients on the risks and benefits of this procedure. METHODS: A retrospective database was collected using current procedural terminology codes for VHR/PAN. The patient-specific variables that were studied include the following: sex, body mass index (BMI), smoking, diabetes, chronic obstructive pulmonary disease, cirrhosis, immunosuppression, length of operation, acute incarcerated hernias, hernia size and location, mesh size and location, pannus weight, concomitant component separation, use of negative-pressure wound therapy, intestinal violation, follow-up duration, ventral hernia working group, history of bariatric surgery, previous hernia repair, skin dehiscence, skin necrosis, chronic wound, surgical site infection, seroma, hematoma, fascial dehiscence, hernia recurrence, unplanned return to operating room, and medical complication...
January 5, 2018: Annals of Plastic Surgery
Sanjay Naran, Sameer Shakir, Kenneth C Shestak, James M Russavage, Vu T Nguyen
PURPOSE: Components separation of the abdominal musculature remains a mainstay for closure of complicated midline and paramedian abdominal wall defects. The authors critically analyzed their experience with this technique to identify prognosticators affecting long-term clinical outcomes. METHODS: A retrospective review was performed of patients undergoing components separation by a single senior surgeon (J.M.R.) between 2000 and 2010. Numerous perioperative patient characteristics were collected and analyzed to determine their effects on long-term clinical outcomes...
March 2018: Annals of Plastic Surgery
Andrew C Kotze, Angela Ruffell, Jane Lamb, Tim P Elliott
There is an increasing interest in the use of combination anthelmintic products for the control of intestinal nematode parasites of livestock. These products are seen as attractive options for parasite control in the face of increasing levels of resistance to the different anthelmintic drug classes, as well as a means to slow the rate at which resistance develops to the individual components of the combination. With the recent introduction of an anthelmintic combination product containing abamectin and monepantel (at 1:12...
January 15, 2018: Veterinary Parasitology
Julia Isabelle Staubitz, Peter Gassmann, Daniel Wilhelm Kauff, Hauke Lang
BACKGROUND: An inguinoscrotal hernia is defined as "giant" if descending below the midpoint of the inner thigh of a patient in upright position. In developed countries this is a rare entity. In the literature different surgical techniques have been reported so far to achieve a successful treatment. CASE PRESENTATION: We present the case of a 63 year-old man suffering from a giant inguinoscrotal hernia, whom we treated using a combined open transabdominal and inguinal approach following an unsuccessful laparoscopic attempt...
December 19, 2017: BMC Surgery
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