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Efficient hexane isomers separation in isoreticular bipyrazolate metal-organic frameworks:The role of pore functionalization

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Nano Research 2021年第2期14卷 532-540页

作者： rebecca Vismara corrado Di Nicola Rodrigo Gil-San Millan Kostiantyn V.Domasevich claudio Pettinari Jorge A.R.Navarro Simona Galli Dipartimento di Scienza e Alta Tecnologiay University delVInsubria 22100 ComoItaly School of Science and Technology University ofCamerino62032 Camerino(MC)Italy Departamento de Quimica Inorganica Universidad de Granada18071 GranadaSpain Taras Shevchenko National University of Kyiv 01601 KyivUkraine School of Pharmacy University of Camerino62032 Camerino(MC)Italy Istituto di chimica dei composti Organometallici(IccOM-cNR) 50019 Sesto FiorentinoItaly consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali 50121 FirenzeItaly Department of chemistry University of LiverpoolLiverpool L73NYUK

Hydrocarbons separation in petrochemical industries is a key,energy-consuming stage in the manufacture of high-quality added-value products—hence the need for more efficient materials and environmentally friendly methodologies to improve this *** this context,we have studied the effect of metal-organic frameworks(MOFs)pore functionalization in hexane isomers separation,isolating the robust isoreticular zinc(ll)bipyrazolates Zn(BPZ),showing no pore decoration,Zn(Me_(2)BPZ),the pores of which are decorated with apolar methyl groups,and Zn(BPZ(NH_(2))_(2)),the spacers of which possess polar Lewis-basic functions(H_(2)BPZ=1H,1'H-4,4'-bipyrazole;H_(2)Me_(2)BPZ=3,3'-dimethyl-1H,1'H-4,4'-bipyrazole;H_(2)BPZ(NH_(2))_(2)=3,5-diamino-1H,1'H-4,4'-bipyrazole;DMF=dimethylformamide).After characterizing Zn(BPZ(NH_(2))_(2))as per its crystal structure and thermal behaviour,and all the three MOFs as per their textural properties,we investigated,from the experimental and computational points of view,the impact of the square one-dimensional channels decoration on the separation of the hexane isomers,demonstrating the relevance of pore constrictions in the resolution of the title alkanes mixture.

关键词： adsorption molecular sieving nitrogen-donor ligands gas separation pow der diffraction variable-tem perature pulse gas chromatography

comparison of Acoustic Respiration Rate, Impedance Pneumography and capnometry Monitors for Respiration Rate Accuracy and Apnea Detection during GI Endoscopy Anesthesia

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Open Journal of Anesthesiology 2013年第2期3卷 74-79页

作者： Basavana Gouda Goudra Lakshmi c. Penugonda rebecca M. Speck Ashish c. Sinha Department of Anesthesiology and critical care Perelman School of Medicine Hospital of the University of Pennsylvania Philadelphia USA Department of Anesthesiology and Perioperative Medicine Drexel University College of Medicine Philadelphia USA Department of Biostatistics and Epidemiology Perelman School of Medicine Hospital of the University of Pennsylvania Philadelphia USA Department of Surgery Perelman School of Medicine Hospital of the University of Pennsylvania Philadelphia USA

Study Objective: To assess the accuracy of respiration rate measurements and the ability to detect apnea by capnometry, impedance pneumography and a new method, acoustic respiration rate monitoring, in anesthetized patients undergoing gastrointestinal endoscopy procedures. Design: Prospective observational study. Setting: Endoscopy procedures laboratory. Patients: 98 patients scheduled for upper gastrointestinal endoscopy with propofol-based anesthesia. Interventions: Patients were monitored for respiration rate with acoustic respiration rate monitoring, capnometry and impedance pneumography and values were compared to the manual counting of breaths by observation of chest wall movements. Additionally, when any respiration rate monitor indicated a cessation of breathing for 30 seconds or greater, the presumed apnea was confirmed by direct observation of the patient for absence of chest wall movements. Measurements and Main Results: Bias and precision for respiration rate measurement was 0 ± 1.0 bpm for acoustic monitoring, 4.8 ± 15.1 bpm for capnometry and 0.4 ± 5.9 bpm for impedance pneumography. Sensitivity and specificity for detection of apnea was 73% and 93% for acoustic monitoring, 73% and 12% for capnometry and 45% and 93% for impedance pneumography. conclusions: Acoustic respiration rate monitoring was found to be accurate for assessment of respiration rate and to have similar or better sensitivity and specificity for detection of apnea compared to capnometry and impedance pneumography in the setting of upper GI endoscopy.

关键词： capnography Endoscopy Monitoring Physiologic Respiratory Rate

Hepatic sarcoidosis complicating treatment-naive viral hepatitis

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World Journal of Hepatology 2012年第12期4卷 402-405页

作者： Aloysious Aravinthan William Gelso Anita Limbu rebecca Brais Paul Richardson Department of Hepatology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom Department of Hepatology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom n Department of Histopathology Cambridge University Hospitals NHS TrustCambridge CB2 0QQUnited Kingdom Department of Hepatology The Royal Liverpool and Broadgreen University Hospitals NHS TrustLiverpool L7 8XPUnited Kingdom

Hepatic sarcoidosis is usually asymptomatic but rarely leads to adverse liver-related ***-existence of viral hepatitis and hepatic sarcoidosis is a rare,but recognised *** a balance between immune suppression and anti-viral therapy may be *** in the presence of viral hepatitis can lead to rapid deterioration of liver ***,anti-viral therapy may exacerbate granulomatous *** we present two cases of viral hepatitis co-existing with sarcoidosis that illustrate successful management *** one,hepatitis B replication was suppressed with oral antiviral therapy before commencing *** the second,remission of hepatic sarcoidosis was achieved with prednisolone,before treating hepatitis c and obtaining a sustained virological response with pegylated interferon and ribavirin therapy.

关键词： Hepatic sarcoidosis chronic hepatitis c infection chronic hepatitis B infection Immune suppression Anti-viral therapy

非常规资源评估——概率法和确定性法在非常规储层的适应性研究

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世界石油工业 2016年第1期23卷 22-26页

作者： c.coll S.Elliott 英国天然气集团

非常规资源在全球分布广泛且资源量巨大，主要包括页岩气、油页岩、煤层气、重油、沥青、致密气、盆地中心气和天然气水合物。但其开采难度大，同时还要应对产品价格不断走低的挑战。然而过去40年，美国非常规天然气储量和资源量持续增... 详细信息

非常规资源在全球分布广泛且资源量巨大，主要包括页岩气、油页岩、煤层气、重油、沥青、致密气、盆地中心气和天然气水合物。但其开采难度大，同时还要应对产品价格不断走低的挑战。然而过去40年，美国非常规天然气储量和资源量持续增长，弥补了常规储量和资源量的减少。

关键词：资源评估非常规储层确定性法适应性概率法天然气储量天然气水合物资源量

Analyzing Virtual World Region Fidelity on Scalability and Simulation Performance

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Open Journal of Modelling and Simulation 2015年第3期3卷 126-135页

作者： Sean c. Mondesire Jonathan Stevens rebecca Leis Douglas B. Maxwell US Army Research Laboratory Orlando FL USA Institute for Simulation and Training University of Central Florida Orlando FL USA

Virtual world simulation offers tremendous potential opportunities to improve, and optimize, individual and collective echelon training for the military. The US Army Research Laboratory (ARL) Military Open Simulator Enterprise Strategy (MOSES) project’s charter is to investigate simulation-based training technology for use in military specific training domains. Of particular interest are attributes of virtual worlds such as geographically distributed large-scale trainee support. We have initiated a series of experiments to determine appropriate benchmarks for simulator performance and to determine appropriate independent variables in order to create a robust predictive model that will enable virtual world training scenario designers to calculate, a priori, the number of trainees that may synchronously operate in a virtual world. The present paper’s purposes were to determine the effect that virtual world region fidelity had on server performance and determine whether this independent variable would be appropriate for inclusion into our predictive model. We found that region fidelity had a statistically significant effect on the simulator’s processor memory usage but had no significant effect on the simulator’s vertical scalability, cPU usage nor network performance. In this paper, we discourse on the purpose of this research, our experimental methodology and results, and discuss the significance of our findings.

关键词： Region Fidelity Vertical Scaling Virtual World Simulation Performance Analysis Distributed Simulation

Hepatitis B surface antigen and hepatitis B core-related antigen kinetics after adding pegylated-interferon to nucleos(t)ids analogues in hepatitis B e antigen-negative patients

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World Journal of Hepatology 2020年第11期12卷 1076-1088页

作者： Teresa Broquetas Montserrat Garcia-Retortillo Miquel Mico Lidia canillas Marc Puigvehi Nuria canete Susana coll Ana Viu Juan Jose Hernandez Xavier Bessa JoseA carrion Department of Gastroenterology Liver SectionHospital del Mar Medical Research InstituteBarcelona 08003Spain Departament of de Medicina Universitat Autònoma de BarcelonaBarcelona 08003Spain Laboratori de Referencia de catalunya El Prat de LlobregatBarcelona 08820Spain

BAcKGROUND Hepatitis B e antigen-negative chronic hepatitis B patients under nucleos(t)ids analogues(NAs)rarely achieve hepatitis B surface antigen(HBsAg)*** To evaluate if the addition of pegylated interferon(Peg-IFN)could decrease HBsAg and hepatitis B core-related antigen(HBcrAg)levels and increase HBsAg loss rate in patients under NAs *** Prospective,non-randomized,open-label trial evaluating the combination of Peg-IFN 180μg/week plus NAs during forty-eight weeks vs NAs in *** B e antigen-negative non-cirrhotic chronic hepatitis B patients of a tertiary hospital,under NAs therapy for at least 2 years and with undetectable viral load,were *** with hepatitis c virus,hepatitis D virus or human immunodeficiency virus co-infection and liver transplanted patients were *** and HBcrAg levels(log10 U/mL)were measured at baseline and during ninety-six *** loss rate was evaluated in both *** events were recorded in both *** kinetic of HBsAg for each treatment group was evaluated from baseline to weeks 24 and 48 by the slope of the HBsAg decline(log10 IU/mL/week)using a linear regression *** Sixty-five patients were enrolled,61%receiving tenofovir and 33%***-six(55%)were included in Peg-IFN-NA group and 29(44%)in NA *** matching by age and treatment duration,baseline HBsAg levels were comparable between groups(3.1 vs 3.2)(P=0.25).HBsAg levels at weeks 24,48 and 96 declined in Peg-IFN-NA group(-0.26,-0.40 and-0.44)and remained stable in NA group(-0.10,-0.10 and-0.10)(Pcline in Peg-IFN-NA group(-0.02)was higher than in NA group(-0.00)(P=0.015).HBcrAg levels did not ***(22%)patients discontinued Peg-IFN due to adverse *** HBsAg loss was achieved in 3(8.3%)patients of the Peg-IFN-NA group and 0(0%)of the NA *** The addition of Peg-IFN to NAs caused a greater and faster decrease of HBsAg levels compared to N

关键词： chronic hepatitis B Hepatitis B e antigen-negative Hepatitis B surface antigen Hepatitis B core-related antigen Pegylated-interferon Nucleos(t)ids analogues©The Author(s)2020.Published by Baishideng Publishing Group Inc.All rights reserved

Intestinal Staple Line Reinforcement Using MatriStem

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Surgical Science 2015年第2期6卷 65-70页

作者： Kent c. Sasse David Warner Sean M. Ward Walter Mandeville rebecca Evans Department of Physiology & cell Biology University of Nevada School of Medicine Reno USA

Background: Staple line reinforcement material has been demonstrated to raise the burst pressure threshold after linear intestinal stapling. Numerous bioprosthetic materials have been utilized in surgical practice. Porcine urinary bladder matrix (Acell, Inc.) is an extracellular matrix material derived from porcine bladder used to reinforce surgically repaired soft tissue, and facilitate the body’s regenerative capacity. Objective: This study represents the first evaluation of urinary bladder matrix in gastrointestinal staple line reinforcement. Methods: Pathogen-free pigs underwent midline laparotomy under general anesthesia. Small intestinal division was performed with an endoscopic linear stapler. Nineteen intestinal divisions were performed with urinary bladder matrix staple line reinforcement, and twenty divisions were unreinforced. Staple lines were then subjected to burst pressure analysis by intraluminal infusion of dyed Krebs solution at an infusion rate of 20 ml·min-1 under manometric monitoring. Upon visible staple line extravasation, intraluminal pressure was recorded. Results: Intestinal staple lines reinforced with urinary bladder matrix exhibited significantly higher burst pressure threshold (p ced staple lines had an average burst pressure of 99 ± 33 mmHg, compared to 61 ± 37 mmHg for unreinforced staple lines. conclusion: Staple line reinforcement using urinary bladder matrix acutely improves burst pressures of intestinal staple lines when compared with unreinforced staple lines. Its regenerative properties may confer a long-term advantage to staple line reinforcement. These findings, along with previous findings of constructive remodeling in the presence of urinary bladder matrix in treatment of the gastrointestinal system, suggest that UBM may serve a role in gastrointestinal staple line reinforcement.

关键词： Surgical Staples Extracellular Matrix Porcine Urinary Bladder Matrix Surgical Anastomosis Small Intestine

Measurement of(n,α)and(n,2n)reaction cross sections at a neutron energy of 14.92±0.02 MeV for potassium and copper with uncertainty propagation

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chinese Physics c 2022年第1期46卷 110-117页

作者： A.Gandhi Aman Sharma rebecca Pachuau1 Namrata Singh L.S.Danu S.V.Suryanarayana B.K.Nayak A.Kumar Department of Physics Banaras Hindu UniversityVaranasi 221005India Nuclear Physics Division Bhabha Atomic Research CentreMumbai 400085India

Experimentally measured neutron activation cross sections are presented for the ^(65)cu(n,0)^(62m)cu,^(41) K(n,a)^(38c)l,and ^(65)cu(n.2n)^(64)cu reactions with detailed uncertainty *** neutron cross secions were measured at an incident energy of 14.92±0.02 MeV,and the neutrons were based on the(d,n)a fusion *** ^(27) Al(n,a)^(24)Na reaction was used as a reference reaction for the normalization of the neutron *** pre-calib-rated lead-shielded HPGe detector was used to detect the residues'γ-ray *** data from the measured cross sections are compared to the previously measured cross sections from the EXFOR database,theoretically calculated cross sections using the TALYS and EMPIRE codes,and evaluated nuclear data.

关键词： nuclear reactions (n,a)and(n,2n)reactions t(c/,n)a neutron source uncertainty propagation covariance analysis TALYS-1.9 and EMPIRE-3.2 code

Hierarchically Structured Nanocomposites via a“Systems Materials Science”Approach

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Accounts of Materials Research 2022年第12期3卷 1248-1259页

作者： rebecca L.Li carl J.Thrasher Theodore Hueckel Robert J.Macfarlane Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139United States Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMassachusetts 02139United States

cONSPEcTUS:Nanocomposite materials can achieve desirable characteristics otherwise unavailable to single component systems,making them attractive platforms to precisely modulate a material’s mechanical,electromagnetic,thermal,and optical *** these properties are often dependent on the organization of constituent materials just as much as their relative composition,intentionally programming composite properties requires hierarchical structural control across many length ***,the fundamental forces governing the atomic,molecular,nanoscale,microscale,and macroscale composition and structure of a material are all interlinked,and thus must be manipulated simultaneously to properly create ideal designer materials.

关键词： properties composite composites