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  • Experimental investigation on performance of

    2018-10-1 · The influence of two opposite central circular perforations on the structural performance of tubular steel stub columns under concentric loading was investigated for perforation size to flat width ratios up to 0.9 The local geometric imperfections, load–end shortening curves, strain distributions at mid height of column and typical failure modes observed from the present test programme are …

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  • Numerical optimization for acoustic performance of

    4) Based on the verified simulation model, the impact of the hole size, plate thickness and perforation rate on sound insulation performance of the perforated plate is analyzed. As indicated from the result, these parameters have some reasonable values rather than that the larger, the better, which provides a foundation for the optimization design of the perforated plate.

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  • Performance and exergy analysis of different

    This parameter is appraised to estimate the considerable performance due to the use of perforated ribs with respect to without perforation as shown in Fig. 25. The higher performance indicator values are acquired at the higher values for the inner annulus Reynolds number. The performance index increases with the increase of the louver width.

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  • Latex-Free Gloves: Safer for Whom? - ScienceDirect

    2010-1-1 · The overall latex glove perforation rate was 8.4% compared with 21.6% for the latex-free alternative (χ 2 P < .001). The operation perforation rate for latex gloves was 34.4% compared with 80% for latex-free gloves (χ 2 P < .001). We suggest that the latex-free glove tested cannot provide a reliable barrier between the surgeon and the patient.

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  • Performance of the OTSC System in the endoscopic

    2013-1-24 · One of the major challenges of current endoscopy and future development of endoscopic interventions is a reliable and safe method for closure of acute gastrointestinal perforations and leaks. Literature reported on perforation rates by accident of 0.06–0.12 % for colonoscopy [1–4]. Given the growing numbers of colonoscopies worldwide, the absolute numbers of complications reach a critical …

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  • Computational analysis of perforation effect on the

    2021-5-1 · The pressure drops, Nu, and performance are calculated for a wide range (as studied in literature) of velocity (100 ≤ Re ≤ 1000). At a constant heat flux of (q = 20 k W m 2), a heat source is considered to be placed at the base plate's bottom surface . The boundary conditions of a uniform velocity at the inlet and a zero-gauge pressure at the outlet are enforced for all the cases.

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  • Long-term reliable physical health monitoring by

    2021-7-1 · Note that higher strain responsivity recorded from the perforated e-skin (four times) arises because a suspended freestanding structure of strain sensors reduces flexural rigidity of the sensor region , suppressing strain damping effect from the PDMS adhesive (see note S2.1 and figs. S8 to S10 for details of the sensor performance). However, when we stimulated sweating on the forehead, …

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  • UK key performance indicators and quality assurance ...

    2006-2-16 · The results of this study indicated that different physically reasonable sets of permeability–porosity–thickness (k–ϕ–h) values of the uniformly crushed zone around the perforation could be assigned to represent single-phase flow performance including inertial effects. The status of the tip of the perforation for two extreme cases of totally closed tip and fully open tip was evaluated and found to have minimal effect on the performance …

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  • Flow around a rock perforation surrounded by

    The experimental results show perforation rate has an optimum value of 0.39% and the corresponding heat flux and effective thermal conductivity reach a minimum value of 2.61 W/m 2 and 2.31 × 10-4 W/(m⋅K).

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  • KSeal | Lidding Film | KM Packaging

    The option to include macro holes, hot needle or laser perforation ensures packages using K Seal can support a range of different atmospheric needs. The ability to print straight onto the lidding film, as well as its superior anti-fog options, helps to improve pack presentation and shelf-appeal ensuring your products stand out from the crowd.

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  • PEH:Perforating - PetroWiki

    2017-4-26 · The perforation flow efficiency is a part of the total well flow efficiency. Achieving the highest flow efficiency, by perforation characteristic, by cleanup, or by a breakdown operation, is a critical step. Good perforation flow efficiency is greater than 80%. Pressure differential toward the formation from the wellbore is overbalance ...

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  • Perforating methods - PetroWiki

    2015-6-29 · Abrasive perforating methods. Abrasive perforating methods use high-volume flow of abrasive-laden fluid to erode through the target pipe or cut it off when the nozzle or tubing string is rotated. Abrasive impingement of hard particles such as sand on steel can cut through 0.25 to 0.3 in. of casing in a matter of minutes.

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  • RJHQLF7UDQVIHU/LQHV

    2019-9-14 · W/(m·K). In addition, both . q. and . k. e. increase with . rise of absolute pressure in vacuum jacket and the absolute pressure should be maintained lower than 0.01 Pa at least. The research of optimal perforation of PMLI in this study offers reliable experimental basis for manufacturing perforated multilayer insulation cryogenic transfer ...

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  • Gastrointestinal Tract Perforation: MDCT Findings ...

    2009-10-1 · Gastrointestinal Tract Perforation: MDCT Findings according to the Perforation Sites Sung Hwan Kim, MD, 1 Sang Soo Shin, MD, 2 Yong Yeon Jeong, MD, 2 Suk Hee Heo, MD, 2 Jin Woong Kim, MD, 3 and Heoung Keun Kang, MD 2 1 Department of Radiology, Chonnam National University Hospital, Gwangju 501-757, Korea.: 2 Department of Radiology, Chonnam National University Medical School, …

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  • UK key performance indicators and quality assurance ...

    2021-5-27 · Secondary sonographic findings of appendicitis can aid image analysis and support diagnosis with and without visualization of an appendix. We sought to determine if age affected the test performance of secondary findings for pediatric appendicitis. We performed a medical record review of emergency department patients younger than 19 years of age who had a sonogram for suspected …

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  • Does age affect the test performance of secondary ...

    2020-9-17 · More importantly, the fibrinogen-albumin ratio index (FARI) has been proposed as a low-cost and widely used marker to predict cancer prognosis. Several studies have demonstrated that FARI is a good predictor of prognosis in gastric tumor, 28, 29 non-small cell lung tumor, 30 CRC, 9, 11, 18, 31 gallbladder tumor, 32 prostate tumor, 33 breast ...

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  • 130+ million publications organized by topic on

    Chemistry Tree: publications by researcher

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  • Gastrointestinal Tract Perforation: MDCT Findings ...

    2009-10-1 · Gastrointestinal Tract Perforation: MDCT Findings according to the Perforation Sites Sung Hwan Kim, MD, 1 Sang Soo Shin, MD, 2 Yong Yeon Jeong, MD, 2 Suk Hee Heo, MD, 2 Jin Woong Kim, MD, 3 and Heoung Keun Kang, MD 2 1 Department of Radiology, Chonnam National University Hospital, Gwangju 501-757, Korea.: 2 Department of Radiology, Chonnam National University Medical School, …

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  • Diagnostic Performance of US for Differentiating ...

    2016-10-31 · The diagnostic performance of US studies designated 5a and 5b was calculated. The following US findings were correlated with perforation at multivariate analysis: maximum appendiceal diameter, wall thickness, loss of mural stratification, hyperemia, periappendiceal fat inflammation, periappendiceal fluid, lumen contents, and appendicolith presence.

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  • New Finite Element Model for Perforation Well

    2013-11-16 · Existing models for predicting productivity with perforation well completion are based on empirical formulas of a finite element modeling method and on electrical simulation data. All known models are extremely simplified and cannot be used for an accurate productivity estimate. In this paper, we propose a new model for perforation of the near-wellbore zone, including empirical formulas for ...

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  • BIR Publications

    2014-2-13 · Small bowel (SB) perforation is an emergency medical situation that presents as an acute abdomen, and is only rarely diagnosed clinically. Nowadays, as CT is often the initial modality used to assess patients with acute abdomen, the radiologist may be the first to suggest such a diagnosis [1–5].CT provides superb anatomical detail and diagnostic specificity by directly imaging the intestinal ...

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  • KReseal | Lidding Film | KM Packaging

    K Reseal improves consumer convenience and reduces food waste. It combines a reliable seal with easy-to-peel functionality and allows the lidding film to be resealed back to the tray. Our K Reseal range can incorporate print designs for improved pack presentation and shelf-appeal using a variety of printing methods.. As a market leading supplier of barrier films for the global food ...

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  • Perforating methods - PetroWiki

    2015-6-29 · Abrasive perforating methods. Abrasive perforating methods use high-volume flow of abrasive-laden fluid to erode through the target pipe or cut it off when the nozzle or tubing string is rotated. Abrasive impingement of hard particles such as sand on steel can cut through 0.25 to 0.3 in. of casing in a matter of minutes.

    Get Price
  • strip perforation - SlideShare

    2021-1-22 · The current study was carried out to (1) evaluate premixed bioceramic (BC) and mineral trioxide aggregate (MTA) sealing properties in a laboratory and (2) compare the performance of these two materials in repairing an immediate iatrogenic furcal perforation of primary molars both clinically and radiographically. In vitro sections including eighty mandibular second primary molars were sorted ...

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  • Premixed bioceramics versus mineral trioxide

    Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

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  • Google Scholar

    2018-3-14 · Predictable, Atraumatic Performance Providing Complete Reassurance Size Flexibility • Pre-shaped design for predictable, reliable performance across a broad spectrum of transcatheter devices • Double curve architecture absorbs contractions of the left …

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  • BIR Publications

    2014-2-13 · Small bowel (SB) perforation is an emergency medical situation that presents as an acute abdomen, and is only rarely diagnosed clinically. Nowadays, as CT is often the initial modality used to assess patients with acute abdomen, the radiologist may be the first to suggest such a diagnosis [1–5].CT provides superb anatomical detail and diagnostic specificity by directly imaging the intestinal ...

    Get Price
  • Diagnostic Performance of Us - RSNA Publications Online

    2019-8-14 · appendicitis). The diagnostic performance of US studies designated 5a and 5b was calculated. The following US findings were correlated with perforation at multivariate analysis: maximum appendiceal diameter, wall thickness, loss of mural stratification, hyperemia, periappendiceal fat inflammation, periappendiceal fluid, lumen contents, and

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  • Multicentre observational study of performance

    Background: Identification of variation in practice is a key step towards standardization of service and determination of reliable quality markers. This study aimed to investigate variation in provision and outcome of emergency appendicectomy. Methods: A multicentre, trainee-led, protocol-driven, prospective observational cohort study was performed during May and June 2012.

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  • KPeel | Peelable Lidding Films | KM Packaging

    K Peel is an extremely versatile range of lidding products that can incorporate many consumer-friendly features. Exceptional sealing performance comes as standard, with PLUS + available for more challenging sealing conditions. We offer one of the largest ranges in the industry and are continually expanding our products to ensure we can meet the demands of the fast-paced food industry.

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  • KFoil | Lidding Film | KM Packaging

    Responding to the food industry’s need for a reliable lidding film for uncoated smoothwall aluminium food trays in the late 1990’s KM Packaging launched K Foil - the world’s first range of films designed specifically for uncoated foil trays.. As a market leader working with top food manufacturers in the UK and around the world, our knowledge of tray sealing application technology is ...

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  • Fishman or Baggs? - The Unofficial Martin Guitar Forum

    2020-1-10 · The K&K is much better, but most definitely requires some EQ to sound good. It is also less feedback resistant than the Baggs. Both Baggs and Fishman make some great outboard gear. I use a older Baggs ParaAcoustic DI that has been incredibly reliable. I love Fishman amps, and use a …

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  • Find Publications — Oregon Health & Science University

    Search by expertise, name or affiliation. Search as: Concept: matching text

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  • Drill Bits | Schlumberger - slb.com

    Rock destruction solutions for every drilling application. What sets us apart is that we start developing a bit design where the bit meets the rock—the cutting element. It’s very small, but how it interacts with the rock type has really big impact. And this approach is how we are reshaping bit performance …

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  • Advanced Ultrasonic Downhole Transducers &

    1999-11-4 · Evaluation of soil N dating with amino acid enantiomers. C2 - Non-edited contributions to conferences. Amelung, W., Zhang, X. and Bol, R. 1999. Evaluation of soil N dating with amino acid enantiomers. ASA CSSA SSSA Annual Meeting Abstracts, Salt Lake City, 31 October - 4 November 1999. American Society of Agronomy. pp. 232.

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  • Diagnostic Performance of Us - RSNA Publications Online

    2019-8-14 · appendicitis). The diagnostic performance of US studies designated 5a and 5b was calculated. The following US findings were correlated with perforation at multivariate analysis: maximum appendiceal diameter, wall thickness, loss of mural stratification, hyperemia, periappendiceal fat inflammation, periappendiceal fluid, lumen contents, and

    Get Price
  • KPeel | Peelable Lidding Films | KM Packaging

    K Peel is an extremely versatile range of lidding products that can incorporate many consumer-friendly features. Exceptional sealing performance comes as standard, with PLUS + available for more challenging sealing conditions. We offer one of the largest ranges in the industry and are continually expanding our products to ensure we can meet the demands of the fast-paced food industry.

    Get Price
  • V adeor - Food and Drug Administration

    2012-8-6 · Performance Bench Testing: Samples of each model were used to drill holes in wood and animal bone to verify its mechanical functionality similar to predicate devices. The release mechanism worked reliable on both materials and stopped cutting as …

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  • Penetrating colorectal injuries

    2015-10-24 · Uttam K. Bodanapally, MBBS Michael Hornick, BS Deborah M. Stein, MD, MPH Penetrating colorectal injuries: Diagnostic Performance of Multidetector CT with Trajectography1 This copy is for personal use only. To order printed copies, contact [email protected]

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  • Performance of CT in Detection of Bowel Injury :

    2019-9-15 · Individual performance and group performance were evaluated by standard receiver operator characteristic analysis (MRMC [multiple readers multiple conditions] type) . Interobserver agreement (reliability) was assessed by item analysis with Cronbach's alpha, where an alpha value of 0.8 or greater is considered reliable . Individual CT signs as ...

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  • Perforated peptic ulcer - The Lancet

    2012-3-23 · syndrome. It is safer, more reliable, and more rapidly applied in an emergency than ... that avoids the risks of displacement, infection, hemorrhage, embolization, perforation, phlebitis, and mechanical or electrical stimulation of ventricular tachycardia or fibrillation ... Extensive performance testing ensures that the proposed ZOLL R Series

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  • 510(k) Summary - Food and Drug Administration

    2021-6-28 · Lee, Y. K. et al. Dissolution of monocrystalline silicon nanomembranes and their use as encapsulation layers and electrical interfaces in water-soluble electronics. ACS Nano 11 , …

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