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Switchable carbamate coagulants to improve recycling ionic liquid from biomass solutions

Green Chemical Engineering 2021年第4期2卷 384-391页

作者： Julia l.Shamshina Ying Qin Ken Belmore Daniel T.Daly Robin D.Rogers Fiber and Biopolymer Research Institute Department of Plant and Soil ScienceTexas Tech UniversityLubbockTX79409USA Alabama Institute for manufacturing Excellence The University of AlabamaTuscaloosaAL35487USA Department of Chemistry and Biochemistry The University of AlabamaTuscaloosaAL35487USA College of Arts&Sciences The University of AlabamaTuscaloosaAL35487USA Solutions Inc.P.O.Box 2206TuscaloosaAL35403USA

A reversible amine-carbamate approach has been developed to reduce the use of antisolvents such as water in the coagulation of biopolymers from ionic liquid(Il)solution and thus improve the economy of Il *** and chitin were recovered from 1-ethyl-3-methylimidazolium acetate([C_(2)mim][OAc])solution by introducing the miscible amines triethanolamine(TEA),ethylenediamine(EDA),or butylamine(BA)and bubbling CO_(2) at 40℃ and atmospheric pressure through the solutions to form carbamate salts in situ which resulted in biopolymer *** gave the best results because of its low boiling point and low viscosity,which benefited both biopolymer recovery and Il *** films and fibers could be formed by extrusion of an mCC/[C_(2)mim]-[OAc]solution into a coagulating bath comprised of a 1:1 m mixture of[C_(2)mim][OAc]and butylammonium butylcarbamate(BA-carbamate).The cellulose,Il,amine,and CO_(2) were easily separated,although the cellulose recovered required some water washings to remove traces of *** to 96.4%of the[C_(2)mim][OAc]could be recovered,76.2%from the coagulation bath and 20.2%from the water *** recycled Il was suitable for another cycle of cellulose dissolution and extrusion and 84.6%of the Il used for the second cycle was *** further work is needed,not the least of which will be reducing the amount of water needed for washing steps,some promising features of this process point the way for new directions for more economically viable Il recycling processes in biomass treatment with Ils.

关键词： Carbamate Ionic liquid Recovery Switchable Coagulation Biopolymers Carbamates Il recycle

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烧结温度对钨重合金的影响

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电工合金文集 1992年第1期 48-51页

作者： l.l.Bourguignon R.m.German 史烽

采用三批不同的商业粉末在五个不同的烧结温度下烧结含钨93%重量的重合金 W-Ni-Fe。然后,对其进行两种不同的热处理。测量了微观结构和拉伸性能的变化以评估这三类实验参数的影响。评估的内容包括密度、硬度、拉伸强度、断裂伸长、晶粒... 详细信息

采用三批不同的商业粉末在五个不同的烧结温度下烧结含钨93%重量的重合金 W-Ni-Fe。然后,对其进行两种不同的热处理。测量了微观结构和拉伸性能的变化以评估这三类实验参数的影响。评估的内容包括密度、硬度、拉伸强度、断裂伸长、晶粒尺寸、接触率和基体相体积分数。结果表明:粉末批次对拉伸性能影响甚微;随着烧结温度的升高,延伸率增加而强度降低。导致这些变化的原因是较高的烧结温度使合金的微观组织粗化。烧结后两种热处理的差异不大,主要取决于烧结温度。

关键词：烧结温度钨重合金测量

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内科学复习自我测试指南

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1985年

作者：（美）史密斯（Smith l.m.）彭先导等译

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Investigation on 1.07 μm laser emission in Nd^(3+)-doped sodium fluoroborate glasses

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Journal of Rare Earths 2012年第5期30卷 413-417页

作者： D.Umamaheswari B.C.Jamalaiah T.Sasikala G.V.lokeswara Reddy l.Rama moorthy Department of Physics Sri Venkateswara UniversityTirupati517 502India Department of Physics Changwon National UniversityChangwon641 773Republic of Korea

Spectroscopic and fluorescence properties of Nd 3＋ ions in sodium fluoroborate（SFB） glasses were prepared and characterized through optical absorption,emission and decay *** energy level analysis was carried out using free-ion Hamiltonian *** oscillator strengths were determined by measuring the area encompassed by the absorption peaks recorded for 1.0 mol.% Nd 3＋-doped *** Judd-Ofelt parameters（2,4,6） were used to evaluate the laser characteristic parameters such as radiative transition probability（A R）,radiative decay time（τ R）,fluorescence branching ratio（β R） and stimulated emission cross-section（σ e） for the 4 F 3/2 metastable *** fluorescence spectra for different concentrations of Nd 3＋ ions were recorded by exciting the samples at 514.5 nm Ar ＋ ion laser.

关键词： sodium fluoroborate glasses rare earth spectroscopy Judd-Ofelt theory laser materials

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极致自然--汕头幼师学校,广东,中国

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世界建筑 2021年第2期 54-57页

作者： l&m Design lab 立木设计

这是一所位于汕头的幼儿教师学校,98%以上的学生是该地区的女性。设计致力于提供自然、自由、平等的空间,以激励这些即将成为幼儿教师的女性实现自我的追求,并将这种观念通过教育传播给当地的儿童。

关键词：幼儿教师一所幼师学校实现自我汕头

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Detection and local Staging of Prostate Cancer by 68Ga-PSmA-PET/CT, Comparison with mpmRI and Histopathology

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Advances in molecular Imaging 2020年第3期10卷 15-29页

作者： F. Intema A. Kooistra m. C. Vermeulen R. m. Hoeben A. m. van de Berk A. lont W. Dingemans l. m. Andrews G. K. lammers J. m. H. de Klerk Department of Radiology and Nuclear medicine Meander Medical Centre Amersfoort The Netherlands Department of Urology Meander Medical Centre Amersfoort The Netherlands Department of Pathology Meander Medical Centre Amersfoort The Netherlands Hospital Pharmacy Meander Medical Centre Amersfoort The Netherlands

Introduction: 68Ga-PSmA-PET/CT has proven its value in prostate cancer with high positive predictive value for lymph node metastasis and superior detection of distant metastasis. There is growing evidence that 68Ga-PSmA- PET/CT has high sensitivity for detection of tumor lesions in the prostate as well. Studies thus far have mainly been performed in patients prior to prostatectomy. Aim of this study is to evaluate diagnostic accuracy in a mixed population of men with increased risk of prostate cancer and evaluate diagnostic possibilities with respect to extra-capsular extension and seminal vesicle invasion. methods: The population consisted of a retrospectively included sequential cohort of 69 patients with 68Ga-PSmA-PET/CT and mpmRI available. 68Ga-PSmA-PET/CT was re-evaluated by two readers blinded for mpmRI and clinical information. likelihood of tumour presence, extra-prostatic extension and seminal vesicle invasion was scored on 5-point likert scale and localized schematically. Results were compared with mpmRI. Available pathological outcome served as gold standard. SUVmax of index lesions was measured and correlated to index tumor Gleason grade. Results: Clinically significant prostate cancer (Gleason ≥ 3 + 4) was detected in 57 (83%) of 69 patients. Diagnostic accuracy was 89% for PET reader 1, 93% for PET reader 2 and 86% for mpmRI. lesion concordance of 68Ga-PSmA-PET/CT and mpmRI was 97%. SUVmax of the index lesion correlated to Gleason grade. Sensitivity for extracapsular extension in the prostatectomy group was 62% for PET reader 1, 33% for PET reader 2 and 50% for mpmRI. Specificity was 62% for PET reader 1, 100% for PET reader 2 and 69% for mpmRI. Conclusion: Ga68-PSmA-PET shows high accuracy in the detection of tumor lesions in the prostate. Results on evaluating extra-capsular extension and seminal vesicle invasion are comparable to mpmRI. This study adds to the increasing evidence th

关键词： Prostate Cancer Detection local Staging 68-Gallium-Prostate Specific membrane Antigen-Positron Emission Tomography multiparametric magnetic Resonance Imaging

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Predicting the outcome of closed-loop small bowel obstruction by preoperative characteristics

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World Journal of Gastrointestinal Surgery 2022年第6期14卷 556-566页

作者： masja K Toneman Bente m de Kok Frank m Zijta Stanley Oei Gijs J D van Acker marinke Westerterp Anne E m van der Pool Department of Surgery Haaglanden Medical CentreThe Hague 2512 VANetherlands Department of Radiology Haaglanden Medical CentreThe Hague 2512 VANetherlands

BACKGROUND Closed-loop small bowel obstruction(Cl-SBO)can threaten the viability of the intestine by obstructing a bowel segment at two adjacent *** recognition and surgery are *** To analyze the outcomes of patients who underwent surgery for Cl-SBO and to evaluate clinical *** Patients who underwent surgery for suspected Cl-BSO on computed tomography(CT)at a single center between 2013 and 2019 were evaluated *** were divided into three groups by perioperative outcome,including viable bowel,reversible ischemia,and irreversible *** and laboratorial variables at presentation were compared and postoperative outcomes were *** Of 148 patients with Cl-SBO,28(19%)had a perioperative viable small bowel,86(58%)had reversible ischemia,and 34(23%)had irreversible *** with a higher age had higher risk for perioperative irreversible ischemia[odds ratio(OR):1.03,95%confidence interval(CI):0.99-1.06].Patients with American Society of Anaesthesiologists(ASA)classification≥3 had higher risk of perioperative irreversible ischemia compared to lower ASA classifications(OR:3.76,95%CI:1.31-10.81).Eighty-six patients(58%)did not have elevated C-reactive protein(>10 mg/l),and between-group differences were *** in-hospital stay was significantly longer for patients with irreversible ischemia(median 8 d,P=0.001)than for those with reversible ischemia(median 6 d)or a viable bowel(median 5 d).Postoperative morbidity was significantly higher in patients with perioperative irreversible ischemia(45%,P=0.043)compared with reversible ischemia(20%)and viable bowel(4%).CONClUSION Older patients or those with higher ASA classification had an increased risk of irreversible ischemia in case of *** irreversible ischemia,postoperative morbidity was increased.

关键词： General surgery laparoscopy laparotomy Critical care Intestinal obstruction morbidity

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1982年夏季塔尔休特人工岛报警和撤离的经验

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海岸工程 1994年第Z1期13卷 209-214页

作者： D.l.汤森 H.R.斯图尔特 R.m.迈尔斯孙伯英

在冰覆盖的波弗特海中建造的塔尔休特人工岛是按冬季钻井平台设计的。该海区的夏季里有多年浮冰的冰侵和突发的风浪，为适应钻井在无冰水面的夏季持续作业，要求设计上做两个方面的考虑。首先考虑的是加固结构。采用护坡抛石，减低冲刷... 详细信息

在冰覆盖的波弗特海中建造的塔尔休特人工岛是按冬季钻井平台设计的。该海区的夏季里有多年浮冰的冰侵和突发的风浪，为适应钻井在无冰水面的夏季持续作业，要求设计上做两个方面的考虑。首先考虑的是加固结构。采用护坡抛石，减低冲刷混凝土沉箱底层的浮力和抬高防浪滔高度防海浪冲击。其次是岛上的报警系统和撤离方法的考虑。不但需要短期预报而且要求做局部直接观测，并对影响直升机飞行的狂风也需报警。1982年夏季，因正确预报和观测天气条件，实施了两期加固工程。在发生两起风暴期间，全员成功地撤离人工岛，岛上损坏极小，人员无伤亡。一、加固结构作为冬季钻井作业设计的塔尔休特人工岛，是用4个独立沉箱组成的。铺设在沉箱间接合处的

关键词：人工岛钻井作业报警条件直升机防冲刷加固工程波弗特海加固结构钻井船大块浮冰

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Strange pentaquarks and excited■^(-)hyperons in■b^(-)→J/ψpK^(-)final states

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Science Bulletin 2021年第13期66卷 1256-1257页

作者： marek Karliner Jonathan l.Rosner School of Physics and Astronomy Tel Aviv UniversityTel Aviv 69978Israel Enrico Fermi Institute and Department of Physics University of ChicagoChicagoIL 60637USA

Besides the observed quark-antiquark and three-quark states,the quark model predicts other states with integral charges,such as qqqq(tetraquarks)and qqqqq(pentaquarks).In 2015,the lHCb Collaboration observed J=wp reso... 详细信息

关键词： quark 末态五夸克态

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Performance of inverse fluidized bed bioreactor in treating starch wastewater

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Frontiers of Chemical Science and Engineering 2009年第3期3卷 235-239页

作者： m.RAJASImmAN C.KARTHIKEYAN Environmental Engineering laboratory Department of Chemical EngineeringAnnamalai UniversityAnnamalai Nagar-608002Tamil NaduIndia

Aerobic digestion of starch industry waste-water was carried out in an inverse fluidized bed bioreactor using low-density(870kg/m 3)polypropylene *** were carried out at different initial substrate concentrations of 2250,4475,6730,and 8910mg COD/l and for various hydraulic retention times(HRT)of 40,32,24,16,and *** of organic matter was studied at different organic loading rates(OlR)by varying the HRT and the initial substrate *** the results it was observed that the maximum COD removal of 95.6% occurred at an OlR of 1.35kg COD/(m^(3)·d)and the minimum of 51.8% at an OlR of 26.73kg COD/(m 3$d).The properties of biomass accumulation on the surface of particles were also *** was observed that constant biomass loading was achieved over the entire period of operation.

关键词： inverse fluidization low-density particles polypropylene starch biofilm

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