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Thermodynamics of the Second Stage Dissociation Step (pK<sub>2</sub>) of buffer Monosodium 1,4-Piperazinediethanesulfonate from (278.15 to 328.15) K

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Journal of biophysical Chemistry 2014年第3期5卷 91-98页

作者： Rabindra N. Roy Lakshmi N. Roy John J. Dinga Matthew R. Medcalf Katherine E. Hundley Eric b. Hines Ryan R. Parmar Jamie A. Veliz clark b. Summers Lucas S. Tebbe Hoffman Department of Chemistry Drury University Springfield USA

Values of the second thermodynamic dissociation constant pK2 of the protonated form of monosodium 1,4-piperazinediethanesulfonate (PIPES) have been determined at twelve different temperatures in the temperature range from (278.15 to 328.15) K including the body temperature 310.15 K by measurement of the electromotive-force for cells without liquid junction of the type: Pt (s), H2 (g), 101.325 kPa|Na-PIPES (m1) + Na 2-PIPES (m2) + NaCl (m3)|AgCl (s), Ag (s), where m1, m2 and m3 indicate the molalities of the corresponding species at 1 atm = 101.325 kPa in SI units. The pK2 values for the dissociation of Na-PIPES are represented by the equation: pK2 = -1303.76/T + 48.369 - 6.46889 lnT with an uncertainty of ± 0.001. The values of pK2 for Na-PIPES were found to be 7.1399 ± 0.0004 at 298.15 K and 7.0512 ± 0.0004 at 310.15 K, respectively, and indicate that this buffer would be useful as pH standard in the range of physiological application. Standard thermodynamic quantities for the acidic dissociation process of Na-PIPES have been derived from the temperature coefficients of the pK2. These values are compared with those of structurally related N-substituted PIPERAZINE and TAURINE at 298.15 K.

关键词： Dissociation Constant Zwitterion Ionic Strength pK2 buffer Compound e.m.f Thermodynamic Quantities

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小詹姆斯·亨特图书馆

世界建筑导报 2015年第2期30卷 62-67页

作者： clark Nexsen(原PbC+L)

2013年7月，斯诺赫塔建筑师事务所与北卡罗来纳大学当地建筑师clarkNexsen（原PbC＋L）合作设计的北卡罗莱纳州立大学新小詹姆斯·亨特图书馆获得72013年图书馆建筑奖，这是美国建筑师学会和美国图书馆协会认可的优秀设计奖。为了溺一... 详细信息

2013年7月，斯诺赫塔建筑师事务所与北卡罗来纳大学当地建筑师clarkNexsen（原PbC＋L）合作设计的北卡罗莱纳州立大学新小詹姆斯·亨特图书馆获得72013年图书馆建筑奖，这是美国建筑师学会和美国图书馆协会认可的优秀设计奖。为了溺一塞个新建筑，斯诺赫塔建筑师事务所与当地建筑师CIarkNexsen以及北卡罗来纳大学（NCSU）图书馆密切合作，树立先进技术协作学习空间的新标杆。

关键词：图书馆建筑建筑师事务所州立大学合作设计优秀设计学习空间技术协作新建筑

氨基酸表面活性剂的合成、性质及工业应用(续完)

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日用化学品科学 2018年第12期41卷 5-12页

作者：肖进新(编译) Divya b.Tripathy Anuradha Mishra James clark Thomas Farmer 北京氟乐邦表面活性剂技术研究所北京100096 不详

7毒性传统表面活性剂,特别是阳离子表面活性剂对水生生物具有很强的毒性。其急性毒性是由于表面活性剂在细胞-水界面处的吸附-离子相互作用现象。降低表面活性剂的cmc通常导致表面活性剂更强的界面吸附,通常导致其急性毒性升高。表面活... 详细信息

7毒性传统表面活性剂,特别是阳离子表面活性剂对水生生物具有很强的毒性。其急性毒性是由于表面活性剂在细胞-水界面处的吸附-离子相互作用现象。降低表面活性剂的cmc通常导致表面活性剂更强的界面吸附,通常导致其急性毒性升高。表面活性剂疏水链的长度增加也导致表面活性剂急性毒性增大。大部分AAS为对人体和环境(特别是对海洋生物)低毒或无毒,使其适合做为食品成分、药物和化妆品[107-113]。很多研究者证明氨基酸表面活性剂对皮肤温和且无刺激[110]。

关键词：传统表面活性剂氨基酸工业应用阳离子表面活性剂急性毒性合成性质离子相互作用

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肉鸡加工过程中环境与产品质量控制

中国家禽 2011年第6期33卷 38-40页

作者： E.Abboah-Afari b.H.Kiepper H.S.Plumber b.H.Kiepper M.E.berrang D.P.Smith R.J.Meinersmann T.J.clark J.Hughes b.Dean 美国乔治亚大学美国农业部美国北卡罗莱纳州立大学美国阿肯色州立大学

1采用膜过滤净化肉鸡加工废水本研究的目的旨在评价采用膜过滤对改善肉鸡加工废水水质的效果。将一定量商业肉鸡加工废水分别用1500~3000μm和508μm过滤网进行初级过滤,去除固体残渣。取4L经过初级处理的废水样品,用500/106μm过滤器... 详细信息

1采用膜过滤净化肉鸡加工废水本研究的目的旨在评价采用膜过滤对改善肉鸡加工废水水质的效果。将一定量商业肉鸡加工废水分别用1500~3000μm和508μm过滤网进行初级过滤,去除固体残渣。取4L经过初级处理的废水样品,用500/106μm过滤器进行预处理.

关键词：肉鸡加工克氏肉鸡屠宰弯曲杆菌试验鸡萘啶酸酮酸聚砜膜挥发性固体总悬浮固体量屠体胴体 COD 化学需氧量水质污染固体物聚偏二氟乙烯膜鼠伤寒沙门菌日龄

COMbINED QEXAFS-XRD,A NEW TECHNIQUE COMbINING IN-SITU FAST SCANNING X-RAY AbSORPTION SPECTROSCOPY AND X-RAY DIFFRACTION

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COMBINED QEXAFS-XRD,A NEW TECHNIQUE COMBINING IN-SITU FAST S...

Weight changes and patterns of weight measurements in hospitalized burn patients:a contemporary analysis

Sixteenth Congress of the International Union of Crystallography

作者： G N Greaves A J Dent b R Dobson S M clark C A Ramsdale G Sankar P A Wright S Natarajan J M Thomas R H Jones SERC Daresbury Laboratory WarringtonUK. The Royal Institution 21Albemarle StreetLondonUK. Department of Chemistry The University of KeeleKeeleUK.

We have recently demonstrated the value of the combined use of Energy Dispersive X-Ray Absorption Spectroscopy and X-ray Diffraction (XRD) in tracing the in-situ conversion of a mineral precursor, aurichalcite(Cu Znx(...

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burns & Trauma 2018年第4期6卷 262-268页

作者： Denisse Mendez-Romero Audra T clark Alana Christie Steven E Wolf Department of Surgery Division of BurnTraumaand Critical CareUniversity of Texas Southwestern Medical CenterE05514B5323 Harry Hines BlvdDallasTX 75390USA

background:Severe burn is associated with significant changes in body weight due to resuscitation volumes, fluid shifts, a hypermetabolic state, prolonged bed rest, and caloric intake. Our goal was to quantify and describe trends in weight change in patients with burns of all severities under modern treatment conditions and to identify the time points at which these changes occur. Methods: An institutional review board-approved chart review was conducted of acute burn patients treated at an American burn Association-verified regional burn center from February 2016 to November 2016. Patients were then divided into three groups based on percent of total burn surface area (%TbSA) burn:1–19%, 20–39%, and≥40%. Weight was expressed as percent change of weight from baseline. Regression analysis was conducted on percent weight changes for each TbSA group. Results:We identified 197 burn patients with a length of stay (LOS) of≥7 days. Of the study cohort, 149 had TbSA burn of 1–19%, 27 had TbSA burn of 20–39%, and 21 had TbSA burn of≥40%. All groups had a majority of White male, non-Hispanic patients with mean ages between 40 and 42 years. burn patients with>20%TbSA burn had a median increase in weight above baseline of approximately 5 to 8%likely due to resuscitation fluids within the first week of hospitalization. Weight loss below baseline often did not exceed 10% and was more pronounced as LOS increased, mostly in patients with >20% TbSA burn. Whereas patients with 1–19% TbSA burn on average returned to baseline weight at last measurement, patients with 20–39% TbSA and ≥40%TbSA burn continued a decline in weight at 4 weeks (r2=0.57 and 0.55, respectively) on the same trajectory. Conclusions:burn patients with>20%TbSA burn had an increase in weight above baseline of up to 8%, likely due to resuscitation fluids within the first week of hospitalization. Weight loss below baseline often did not exceed 10%and was more pronounced as LOS increased, mostly in patients with>20%TbS

关键词： burn Weight Nutrition Metabolism Critical care

Role of magnetic field evolution on filamentary structure formation in intense laser–foil interactions

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High Power Laser Science and Engineering 2019年第1期7卷 99-106页

作者： M.King N.M.H.butler R.Wilson R.Capdessus R.J.Gray H.W.Powell R.J.Dance H.Padda b.Gonzalez-Izquierdo D.R.Rusby N.P.Dover G.S.Hicks O.C.Ettlinger C.Scullion D.C.Carroll Z.Najmudin M.borghesi D.neely P.McKenna SUPA Department of Physics University of Strathclyde Central Laser Facility STFC Rutherford Appleton Laboratory The John Adams Institute for Accelerator Science Blackett Laboratory Imperial College London Centre for Plasma Physics Queen's University Belfast

Filamentary structures can form within the beam of protons accelerated during the interaction of an intense laser pulse with an ultrathin foil target. Such behaviour is shown to be dependent upon the formation time of quasi-static magnetic field structures throughout the target volume and the extent of the rear surface proton expansion over the same *** is observed via both numerical and experimental investigations. by controlling the intensity profile of the laser drive,via the use of two temporally separated pulses, both the initial rear surface proton expansion and magnetic field formation time can be varied, resulting in modification to the degree of filamentary structure present within the laser-driven proton beam.

关键词： laser-plasma ion acceleration instabilities

Moisture and temperature controls on nitrification differ among ammonia oxidizer communities from three alpine soil habitats

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Frontiers of Earth Science 2016年第1期10卷 1-12页

作者： brooke b. OSbORNE Jill S. bARON Matthew D. WALLENSTEIN Natural Resource Ecology Laboratory Colorado State University Fort Collins CO 80523 USA Present address: Department of Ecology and Evolutionary biology Brown University Providence RI 02912 USA U.S. Geological Survey Fort Collins Science Center Fort Collins CO 80526 USA Department of Ecosystem Science and Sustainability Colorado State University Fort Collins CO 80523 USA

Climate change is altering the timing and magnitude of biogeochemical fluxes in many high- elevation ecosystems. The consequent changes in alpine nitrification rates have the potential to influence ecosystem scale responses. In order to better understand how changing temperature and moisture conditions may influence ammonia oxidizers and nitrification activity, we conducted laboratory incubations on soils collected in a Colorado watershed from three alpine habitats （glacial outwash, talus, and meadow）. We found that bacteria, not archaea, dominated all ammonia oxidizer communities. Nitrification increased with moisture in all soils and under all temperature treatments. However, temperature was not correlated with nitrification rates in all soils. Site-specific temperature trends suggest the development of generalist ammonia oxidzer communities in soils with greater in situ temperature fluctuations and specialists in soils with more steady temperature regimes. Rapidly increasing tempera- tures and changing soil moisture conditions could explain recent observations of increased nitrate production in some alpine soils.

关键词： ammonia-oxidizing archaea (AOA) ammo-nia-oxidizing bacteria (AOb) global change Loch Valewatershed nitrification thermal adaptation

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教你一个哮喘长期治疗方案

实用乡村医生杂志 2003年第1期10卷 37-39页

作者： Robert b.Mellins Dadid Evans Noreen clark barry Zimmerman Sandra Wiesemann 刘嘉嘉 Columbia University College of Physicians and Surgeons Columbia University School of Public Health NewYorkNewYorkPH.D. University of Michigan School of Public Health City University of New York Graduate School and University Center Medical Health Research Association of NewYork NewYorkNewYorkR.N.M.P.H. 中国医科大学84期日文2班沈阳110001

据了解,目前约有40%～50%的医嘱得不到患者的正确执行,而通过医生与患者进行有效的沟通,可以提高患者对用药方案的依从性.本文介绍了一种针对哮喘患者制定的长期治疗方案,并强调了治疗方案涉及患者及其家属从而提高其依从性的重要性,同... 详细信息

据了解,目前约有40%～50%的医嘱得不到患者的正确执行,而通过医生与患者进行有效的沟通,可以提高患者对用药方案的依从性.本文介绍了一种针对哮喘患者制定的长期治疗方案,并强调了治疗方案涉及患者及其家属从而提高其依从性的重要性,同时利用比较容易理解和运用的图表形式使治疗方案简单易行.该方案要求医生向患者提供治疗指导,患者或其家属能够根据每次发病的病情自行调整治疗方案.

关键词：哮喘治疗方案症状预防