58 research outputs found

    Evaluating performance characteristics of different fusible intertinings

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    An attempt has been made to evaluate the performance characteristics of three different fusible interlinings used in apparel industries with sheep nappa leathers in terms of bending, softness, bond strength, shrinkage, tensile strength and double hole stitch tear strength. Of all aspects of performance investigated, it is found that among the three interlinings, the fusible interlining which is warp knitted with a combination of strong nylon yarn woven with the cotton yarn performs well as compared to the other two interlining materials. The results not only facilitate the basic understanding of the fusing behavior of interlining materials with nappa leathers but also are useful for apparel design and construction

    Pretreatment strategies to improve crude glycerol utilisation and metabolite production by Aspergillus terreus

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    Crude glycerol (CG) can be used as a substrate for microbial bioconversion. However, due to presence of many impurities, manymicroorganisms are unable to utilise this substrate efficiently. +e present study is trying to improve CG using as the feedstock ofAspergillusterreusfor the production of lovastatin, (+)-geodin, and sulochrin. +e CG was pretreated chemically (solvents) andphysically (activated carbon (AC) and water softener (WS)) to separate most of the impurities from the CG. For solventpretreatments, petroleum ether (PE) produced the largest increase of lovastatin (92.8%) when compared to positive control andpure glycerol (PG) and up to 820% when compared to negative control (CG). In contrast, diethyl ether (DE) produced the largestincrease in (+)-geodin at 80.81% (versus CG) and 176.23% (versus PG). +e largest increase in toluene (Tol) was observed insulochrin production, at 67.22% (versus CG) and 183.85% (versus PG). For physical pretreatments, the pattern of metaboliteproduction in AC (lovastatin: 20.65 mg/L, (+)-geodin: 7.42 mg/L, sulochrin: 11.74 mg/L) resembled PG (lovastatin: 21.8 mg/L,(+)-geodin: 8.60 mg/L, sulochrin: 8.18 mg/L), while WS (lovastatin: 11.25 mg/L, (+)-geodin: 15.38 mg/L, sulochrin: 16.85 mg/L)resembled CG (lovastatin: 7.1 mg/L, (+)-geodin:17.10 mg/L, sulochrin:14.78 mg/L) at day 6 of fermentation. +ese results indicatethat solvent pretreatments on CG are excellent for metabolites production inA. terreus, depending on the solvents used. Incontrast, physical pretreatments are only feasible for (+)-geodin and sulochrin production. +erefore, different strategies can beemployed to manipulate theA. terreusbioconversion using improved CG by using a few simple pretreatment strategies

    Potensi Tape Sebagai Panganan Tradisional Terhadap Efek Hepatotoksik Tikus Terinduksi Karbon-tetraklorida

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    The purpose of this study was to determine the effect of “Tape” that has an alcoholic compound, to the hepatotoxic effect in the rat induced Carbon Tetrachloride. And also determine which fermentation time of the Tape can give effect to the hepatotoxic in the rat induced Carbon tetrachloride. Healthy rats were randomly divided into 7 groups of 5 animals in each. Group 1 received carbon tetrachloride 2ml/kgBW treated intraperitoneal. Group 2-4 were given “Tape” suspension 18g/kgBW once daily for 6 days with different fermentation time (3, 5, 7 days). Group 5-7 were given “Tape” suspension 18g/KgBW once daily for 6 days with different fermentation time and carbon tetrachloride was given on the 7th day. Blood sample from all groups was obtained by sinus orbitalis after 24 hours application for estimation the serum level oftransaminase. The result showed that “Tape” suspension had a potential effect to reduce the hepatotoxicity induced by carbon tetrachloride. “Tape” suspension with 5 days fermentation was significantly decreased serum level of transaminase (P<0,05) upon carbon tetrachlorideinduced hepatic damage in rats

    Compatibility of mulberry silk fabric with cow nappa leather for product development

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    298-304The present work describes the application of silk fabric for leather garments and goods to support the leather products industry in identifying alternate raw material. The results show that the quilted silk fabric has the potential to be combined with cow nappa leather to make products with improved strength and enhanced aesthetic appeal. The major findings of this study also prove that on treatment with artificial alkaline perspiration, leather and silk-based samples behave inversely and this relation gives a clear direction to product designers and developers about the placement of leather and silk panels while making combination products. Apparently, this study helps the silk industry to attain the major share in the domestic and global market

    Compatibility of mulberry silk fabric with cow nappa leather for product development

    Get PDF
    The present work describes the application of silk fabric for leather garments and goods to support the leather products industry in identifying alternate raw material. The results show that the quilted silk fabric has the potential to be combined with cow nappa leather to make products with improved strength and enhanced aesthetic appeal. The major findings of this study also prove that on treatment with artificial alkaline perspiration, leather and silk-based samples behave inversely and this relation gives a clear direction to product designers and developers about the placement of leather and silk panels while making combination products. Apparently, this study helps the silk industry to attain the major share in the domestic and global market.

    Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

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    BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

    Xer Recombinase and Genome Integrity in Helicobacter pylori, a Pathogen without Topoisomerase IV

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    In the model organism E. coli, recombination mediated by the related XerC and XerD recombinases complexed with the FtsK translocase at specialized dif sites, resolves dimeric chromosomes into free monomers to allow efficient chromosome segregation at cell division. Computational genome analysis of Helicobacter pylori, a slow growing gastric pathogen, identified just one chromosomal xer gene (xerH) and its cognate dif site (difH). Here we show that recombination between directly repeated difH sites requires XerH, FtsK but not XerT, the TnPZ transposon associated recombinase. xerH inactivation was not lethal, but resulted in increased DNA per cell, suggesting defective chromosome segregation. The xerH mutant also failed to colonize mice, and was more susceptible to UV and ciprofloxacin, which induce DNA breakage, and thereby recombination and chromosome dimer formation. xerH inactivation and overexpression each led to a DNA segregation defect, suggesting a role for Xer recombination in regulation of replication. In addition to chromosome dimer resolution and based on the absence of genes for topoisomerase IV (parC, parE) in H. pylori, we speculate that XerH may contribute to chromosome decatenation, although possible involvement of H. pylori's DNA gyrase and topoisomerase III homologue are also considered. Further analyses of this system should contribute to general understanding of and possibly therapy development for H. pylori, which causes peptic ulcers and gastric cancer; for the closely related, diarrheagenic Campylobacter species; and for unrelated slow growing pathogens that lack topoisomerase IV, such as Mycobacterium tuberculosis

    Surgical site infection after gastrointestinal surgery in high-income, middle-income, and low-income countries: a prospective, international, multicentre cohort study

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    Background: Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in countries in all parts of the world. Methods: This international, prospective, multicentre cohort study included consecutive patients undergoing elective or emergency gastrointestinal resection within 2-week time periods at any health-care facility in any country. Countries with participating centres were stratified into high-income, middle-income, and low-income groups according to the UN's Human Development Index (HDI). Data variables from the GlobalSurg 1 study and other studies that have been found to affect the likelihood of SSI were entered into risk adjustment models. The primary outcome measure was the 30-day SSI incidence (defined by US Centers for Disease Control and Prevention criteria for superficial and deep incisional SSI). Relationships with explanatory variables were examined using Bayesian multilevel logistic regression models. This trial is registered with ClinicalTrials.gov, number NCT02662231. Findings: Between Jan 4, 2016, and July 31, 2016, 13 265 records were submitted for analysis. 12 539 patients from 343 hospitals in 66 countries were included. 7339 (58·5%) patient were from high-HDI countries (193 hospitals in 30 countries), 3918 (31·2%) patients were from middle-HDI countries (82 hospitals in 18 countries), and 1282 (10·2%) patients were from low-HDI countries (68 hospitals in 18 countries). In total, 1538 (12·3%) patients had SSI within 30 days of surgery. The incidence of SSI varied between countries with high (691 [9·4%] of 7339 patients), middle (549 [14·0%] of 3918 patients), and low (298 [23·2%] of 1282) HDI (p < 0·001). The highest SSI incidence in each HDI group was after dirty surgery (102 [17·8%] of 574 patients in high-HDI countries; 74 [31·4%] of 236 patients in middle-HDI countries; 72 [39·8%] of 181 patients in low-HDI countries). Following risk factor adjustment, patients in low-HDI countries were at greatest risk of SSI (adjusted odds ratio 1·60, 95% credible interval 1·05–2·37; p=0·030). 132 (21·6%) of 610 patients with an SSI and a microbiology culture result had an infection that was resistant to the prophylactic antibiotic used. Resistant infections were detected in 49 (16·6%) of 295 patients in high-HDI countries, in 37 (19·8%) of 187 patients in middle-HDI countries, and in 46 (35·9%) of 128 patients in low-HDI countries (p < 0·001). Interpretation: Countries with a low HDI carry a disproportionately greater burden of SSI than countries with a middle or high HDI and might have higher rates of antibiotic resistance. In view of WHO recommendations on SSI prevention that highlight the absence of high-quality interventional research, urgent, pragmatic, randomised trials based in LMICs are needed to assess measures aiming to reduce this preventable complication
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