Immunochemical analysis on polypropylene mesh: does mesh size make a difference?

2020 ◽  
Vol 32 (1) ◽  
pp. 47-55
Author(s):  
Tsia-Shu Lo ◽  
Yi-Hao Lin ◽  
Sandy Chua ◽  
Hsiao-Chien Chu ◽  
Ma. Clarissa Uy-Patrimonio ◽  
...  
Keyword(s):  
Polypropylene Mesh ◽  
Mesh Size ◽  
Immunochemical Analysis

Use of Polypropylene Mesh in the Management of a Contaminated Large Ventral Hernia: A Contraindication or a Solution?

2013 ◽  
Vol 79 (12) ◽  
pp. 1298-1303 ◽  
Author(s):  
Fei Yang
Keyword(s):  
Ventral Hernia ◽  
Polypropylene Mesh ◽  
Perioperative Management ◽  
Abdominal Cavity ◽  
Mesh Size ◽  
Bladder Injury ◽  
Wound Debridement ◽  
Large Ventral Hernia ◽  
Hernia Size ◽  
Ventral Hernias

Management of contaminated large ventral hernias is still a challenge as a result of massive loss of muscular and fascial tissues in the abdominal wall, traditional contraindication to use of a prosthesis, and complicated perioperative management. This study aimed to provide a solution for this challenging dilemma using monofilament polypropylene mesh (Marlex; Bard) in the Sublay-Bridge fashion. Twenty-three consecutive patients with contaminated large ventral hernias from 2009 to 2011 were identified. Preoperatively, source of contamination at the surgical site was managed through oral antibiotics, wound débridement, and dressing change; the hernia content was reduced into the abdominal cavity gradually and an abdominal binder was applied. Marlex meshes in the Sublay-Bridge fashion were used in these patients. Demographic and perioperative data were collected. Fourteen males and nine females were included with a mean age of 52.5 ± 10.5 years and a mean body mass index of 25.2 ± 6.1 kg/m2. Twelve patients underwent ostomy takedown, which was the most common indication. Mean hernia size was 120.5 ± 18.5 cm2 and a mean mesh size was 380.0 ± 80.5 cm2. The mean operative time was 125.5 ± 35.5 minutes and the hospital stay was 10.0 ± 3.5 days. Twenty-three patients had a mean follow-up period of 12.5 ± 6.5 months. An iatrogenic bladder injury occurred because of severe prevesical adhesion attributed to previous prosthesis repair. There was no presentation of abdominal compartment syndrome. Four patients developed surgical site infection and managed with conservative therapy without mesh removal. Three patients had seromas and underwent aspiration guided by B-ultrasound. Three patients reported chronic foreign body sensation. No recurrence was followed up. Repair of contaminated large ventral hernia using a Marlex mesh in the Sublay-Bridge fashion is safe and efficient management. Perioperative management and operative technology play important roles in dealing with this problem.

THE COMPOSITION AND DISTRIBUTION OF BENTHIC FORAMINIFERA AT CORAL REEF ECOSYSTEM IN THOUSANDS ISLAND

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Lumban Nauli Lumban Toruan ◽  
Dedi Soedharma ◽  
Kresna Tri Dewi
Keyword(s):  
Coral Reef ◽  
Human Activities ◽  
Close Association ◽  
Mesh Size ◽  
Coral Reef Ecosystem ◽  
Composition Distribution ◽  
Benthic Foraminifers ◽  
High Nutrient ◽  
Binocular Microscope ◽  
Reef Ecosystem

Composition and distribution of foraminifers are affected by human activities and have close association with coral reef ecosystem. The aims of this research were to investigate the benthic foraminifers’ composition and distribution in sediment of coral reef ecosystem. Eleven stations of Karang Bongkok, Pramuka, and Onrust Island were observed in this study. The sediments were taken from surface substrate up to 2 cm under the substrate. Samples were washed on sieve with mesh size 0,063 mm, and then dried in oven with 50°C of temperature  for two hours. After separating from the sediment, the foraminifers were laid on foraminiferal slide and indentified using binocular microscope. The highest composition of symbiont-bearing foraminiferal assemblages which associated with reef ecosystem was in East Pramuka (78.17%) and the lowest was in South Onrust (21,83%). The opportunistic type had the highest composition in South Onrust (38.67%) and the lowest was in South Karang Bongkok. In west Pramuka had the highest composition of heterotrophic type (57.17%) and the lowest was in North Onrust (11.33%). Onrust Island was dominated by opportunistic type, indicating high nutrient. The highest amount of foraminifers’ taxa was found in Karang Bongkok with good coral reef coverage, while the lowest in Onrust facing with Jakarta Bay. Keywords: composition, distribution, benthic foraminifers, coral reef.

WALLEX Nos. 55 and 505

Alloy Digest ◽  
1995 ◽  
Vol 44 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Mesh Size ◽  
Powder Metal ◽  
Application Methods

Abstract Wallex Nos. 55 and 505 are similar composite hardfacing powders with different mesh size for different application methods. The minimum hardness is RC 58. This datasheet provides information on composition, physical properties, and hardness. It also includes information on corrosion resistance as well as powder metal forms. Filing Code: CO-98. Producer or source: Wall Colmonoy Corporation.

scholarly journals Influence of finite element mesh size on the carrying capacity analysis of single-row ball slewing bearing

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110090
Author(s):  
Peiyu He ◽  
Qinrong Qian ◽  
Yun Wang ◽  
Hong Liu ◽  
Erkuo Guo ◽  
...  
Keyword(s):  
Finite Element ◽  
Carrying Capacity ◽  
Mesh Size ◽  
Finite Element Mesh ◽  
Fe Model ◽  
Element Mesh ◽  
Heavy Load ◽  
Slewing Bearing ◽  
Maximum Contact ◽  
Slewing Bearings

Slewing bearings are widely used in industry to provide rotary support and carry heavy load. The load-carrying capacity is one of the most important features of a slewing bearing, and needs to be calculated cautiously. This paper investigates the effect of mesh size on the finite element (FE) analysis of the carrying capacity of slewing bearings. A local finite element contact model of the slewing bearing is firstly established, and verified using Hertz contact theory. The optimal mesh size of finite element model under specified loads is determined by analyzing the maximum contact stress and the contact area. The overall FE model of the slewing bearing is established and strain tests were performed to verify the FE results. The effect of mesh size on the carrying capacity of the slewing bearing is investigated by analyzing the maximum contact load, deformation, and load distribution. This study of finite element mesh size verification provides an important guidance for the accuracy and efficiency of carrying capacity of slewing bearings.

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