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Reactive processing of poly(lactic acid)/poly(ethylene octene) blend film with tailored interfacial intermolecular entanglement and toughening mechanism

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Journal of Materials Science & Technology 2022年第3期98卷 186-196页

作者： Wenjun He Lin Ye Phil Coates fin caton-rose Xiaowen Zhao State Key Laboratory of Polymer Materials Engineering of China Polymer Research Institute of Sichuan UniversityChengdu 610065China School of Engineering Design and TechnologyUniversity of BradfordBradfordUK

In order to obtain a uniform and effectively toughened poly(lactic acid)film by blending with low content of poly(ethylene octene)(POE)with high elasticity,the tailored interfacial intermolecular interaction and entanglement between the two phases of the PLA/POE blend was innovatively constructed via the facile reactive melt blending process through the reaction of the epoxy/anhydride groups grafted on the POE chains with the end groups of PLA chains(PLA/GPOE-MPOE).It was observed that POE domains were embedded tightly in PLA matrix with a fuzzy interface and abundant interface transition area,and the impact fractured surface of the blend showed an obvious plastic deformation with less occurrence of fibrillation of PLA matrix or interfacial *** with neat PLA and directly blended PLA/POE blends,the PLA/GPOE-MPOE blend exhibited much higher complex viscosity/storage modulus,much lower tanδvalues in the terminal region,and obvious strain-hardening *** deviation in viscoelastic behavior of PLA/GPOE-MPOE from linear PLA indicated the enhanced molecular entanglement between the long-branched chains,resulting in an enhancement of the stretching ability during biaxial drawing of the *** PLA/GPOE-MPOE films with draw ratio as high as 7×7 were obtained through biaxial stretching,which showed much higher tensile strength and the elongation at break than that of neat PLA and PLA/POE *** work provides a facile method for fabricating toughening PLA films with application potentials.

关键词： Poly(lactic acid)/poly(ethylene octene)(PLA/POE)blend film Reactive processing Tailored interfacial intermolecular interaction Long-chain branched structure Toughening mechanism

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The model developed for stress-induced structural phase transformations of micro-crystalline silicon films

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Nano-Micro Letters 2010年第2期2卷 68-73页

作者： Chang-Fu Han Jen-fin Lin Department of Mechanical Engineering National Cheng Kung University Center for Micro/Nano Science and Technology National Cheng Kung University

The nanoindentations were applied to island-shaped regions with metal-induced Si crystallizations. The experimental stress-strain relationship is obtained from the load-depth profile in order to investigate the critical stresses arising at various phase transitions. The stress and strain values at various indentation depths are applied to determine the Gibbs free energy at various phases. The intersections of the Gibbs free energy lines are used to determine the possible paths of phase transitions arising at various indentation depths. All the critical contact stresses corresponding to the various phase transitions at four annealing temperatures were found to be consistent with the experimental results.

关键词： Silicon films Phase transitions Stress-strain model

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Low-dose tacrolimus ameliorates liver inflammation and fibrosis in steroid refractory autoimmune hepatitis

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World Journal of Gastroenterology 2007年第23期13卷 3232-3236页

作者： fin Stolze Larsen Ben Vainer Martin Eefsen Peter Nissen Bjerring Bent Adel Hansen Department of Hepatology RigshospitaletUniversity Hospital of CopenhagenCopenhagen 2100Denmark Department of Pathology RigshospitaletUniversity Hospital of CopenhagenCopenhagen 2100Denmark

AIM: To determine the eff icacy of tacrolimus on clinical status, histopathological status and biochemical markers in patients with steroid refractory autoimmune hepatitis (AIH). METHODS: Retrospectively, clinical parameters, biochemistry and histology were obtained from patient records. RESULTS: Nine patients [8 females/1 male, median age 32 (range 16-64) years] were identified to have received tacrolimus for a median duration of 18 (12-37) mo. Before initiation of tacrolimus treatment the patients were maintained on a prednisolone dose of 20 mg daily (range 20-80 mg/d), which was tapered to 7.5 (5-12.5) mg/d (P = 0.004). Alanine aminotransferase and immunoglobulin-G concentrations decreased from 154 (100-475) to 47(22-61) U/L (P = 0.007), and from 16 (10-30.2) to 14.5 (8.4-20) g/L (P = 0.032), respectively. All patients showed improvement of the liver inflammatory activity, as determined by the Ishak score (P = 0.016), while the degree of f ibrosis tended to decrease (P = 0.049). CONCLUSION: The use of low dose tacrolimus can lead to biochemical and histologic improvement of inflammation with no progression of the stage of f ibrosis in patients with steroid refractory AIH. Low dose tacrolimus therapy also allows substantial reduction of prednisone dose.

关键词： Autoimmune hepatitis Tacrolimus Prednisone Azathioprine Mycophenolate mofetil Liver failure

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Effect of Prometheus liver assist system on systemic hemodynamics in patients with cirrhosis: A randomized controlled study

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World Journal of Gastroenterology 2008年第13期14卷 2065-2071页

作者： Thomas Dethloff Flemming Tofteng Hans-Jorgen Frederiksen Michael Hojskov Bent Adel Hansen fin Stolze Larsen Department of Hepatology Copenhagen University Hospital Rigshospitalet Copenhagen Denmark Department of Anaesthesia Copenhagen University Hospital Rigshospitalet Copenhagen Denmark

AIM： To evaluate treatment safety and hemodynamic changes during a single 6-h treatment with the PrometheusTM liver assist system in a randomized, controlled study. METHODS： Twenty-four patients were randomized to either the study group or to one of two control groups： Fractionated Plasma Separation Adsorption and Dialysis, PrometheusTM system （Study group; n = 8）; Molecular Adsorbent Recirculation System （MARS）TM （Control group 1, n = 8）; or hemodialysis （Control group 2; n = 8）. All patients included in the study had decompensated cirrhosis at the time of the inclusion into the study. Circulatory changes were monitored with a Swan-Ganz catheter and bilirubin and creatinine were monitored as measures of protein-bound and water-soluble toxins. RESULTS： Systemic hemodynamics did not differ between treatment and control groups apart from an increase in arterial pressure in the MARS group （P = 0.008）. No adverse effects were observed in any of the groups. Creatinine levels significantly decreased in the MARS group （P = 0.03） and hemodialysis group （P = 0.04）. Platelet count deceased in the Prometheus group （P = 0.04）.CONCLUSION： Extra-corporal liver support with Prometheus is proven to be safe in patients with endstage liver disease but does not exert the beneficial effects on arterial pressure as seen in the MARS group,

关键词： Extra-corporal liver therapy Prometheus Molecular Adsorbent Recirculation System Systemic hemodynamics

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Sildenafil does not influence hepatic venous pressure gradient in patients with cirrhosis

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World Journal of Gastroenterology 2008年第40期14卷 6208-6212页

作者： Jens Otto Clemmesen Annamaria Giraldi Peter Ott Kim Dalhoff Bent Adel Hansen fin Stolze Larsen Department of Hepatology RigshospitaletUniversity Hospital of Copenhagen Clinical Pharmacology RigshospitaletUniversity Hospital of Copenhagen

AIM： To investigate if sildenafil increases splanchnic blood flow and changes the hepatic venous pressure gradient （HVPG） in patients with cirrhosis. Phosphodiesterase type-5 inhibitors are valuable in the treatment of erectile dysfunction and pulmonary hypertension in patients with end-stage liver disease. However, the effect of phosphodiesterase type-5 inhibitors on splanchnic blood flow and portal hypertension remains essentially unknown. METHODS： Ten patients with biopsy proven cirrhosis （five females/five males, mean age 54：1：8 years） and an HVPG above 12 mmHg were studied after informed consent. Measurement of splanchnic blood flow and the HVPG during liver vein catheterization were done before and 80 min after oral administration of 50 mg sildenafil. Blood flow was estimated by use of indocyanine green clearance technique and Fick＇s principle, with correction for non-steady state. RESULTS： The plasma concentration of sildenafil was 222 ± 136 ng/mL 80 min after administration. Mean arterial blood pressure decreased from 77 ±7 mmHg to 66 ± 12 mmHg, P = 0.003, while the splanchnicblood flow and oxygen consumption remained unchanged at 1.14 ± 0.71 L/min and 2.3 ± 0.6 mmol/ min, respectively. Also the HVPG remained unchanged （18 ± 2 mmHg vs 16 ± 2 mmHg） with individual changes ranging from -8 mmHg to ±2 mmHg. In seven patients, HVPG decreased and in three it increased. CONCLUSION： In spite of arterial blood pressure decreases 80 min after administration of the phosphodiesterase type-5 inhibitor sildenafil, the present study could not demonstrate any clinical relevant influence on splanichnic blood flow, oxygen consumption or the HVPG.

关键词： Cirrhosis Sildenafil Portal hypertension Portal hemodynamics Hepatic blood flow Erectile dysfunction Hepatic venous pressure gradient

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Selenium and Cardiovascular Diseases-An Update

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Biomedical and Environmental Sciences 1997年第2期10卷 220-226页

作者： JUSSI K. HUTTUNEN (National Public Health Institute, Mannerheimintie 166,fin-00300 Helsinki, finland) National Public Health Institute Helsinki Finland.

Dietary deficiency of seleniurn has been incriminated in the etiology of cardiovascular diseases. Thus, cardiomyopathy associated with low selenium intake has been described in areas of exceptionally low selenium intake and in patients receiving total parenteral nutrition. Epidemiological studies have provided some evidence for the role of selenium deficiency in the etiology of atherosclerotic disease. An inverse association between the incidence of ischaemic heart disease and selenium intake has been described in population comparisons. The results of longitudinal studies within populations are conflicting. While some investigations have observed a relationship between low serum-selenium levels and the risk of coronary disease, others have not. final evidence for the role of selenium in preventing atherosclerotic disease can be obtained only from controlled prevention trials

关键词： Selenium and Cardiovascular Diseases-An Update CVB

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Felix Havoc

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音乐大观 2008年第12期 12-14页

作者： fin De Siede Angst

以前我已抱怨过很多次了,但是最后什么都没有改变,我的鲜血依然沸腾着,所以我要再说一次:操!流行摇滚!操!后硬核!我都不能相信最后的十年里这种大多没有骨气,空虚乏力的音乐会在市场上将自己贴上硬核标签售出。把拳击手套脱了跑进赛场... 详细信息

以前我已抱怨过很多次了,但是最后什么都没有改变,我的鲜血依然沸腾着,所以我要再说一次:操!流行摇滚!操!后硬核!我都不能相信最后的十年里这种大多没有骨气,空虚乏力的音乐会在市场上将自己贴上硬核标签售出。把拳击手套脱了跑进赛场那你就会变成草包。这狗屎让我愤怒难遏。花大部分时间去听这种狗屎流行音乐,简直就是浪费生命。在我工作时我会听电台,这样可以帮我打发时间,而且我也不能整天搅在那些劣质磁带里。最近我一直都在听本地一个大学校园电台,因为我喜欢听各种各样非商业的摇滚乐。但是我现在不得不把频道调到一个商业硬摇滚电台,因为那些狗屎一样的校园摇滚快要把我逼疯了。当硬摇滚电台的啤酒广告和鸟音乐泛滥之后,我又把频道调回校园电台。这时候我突然发现了不一样的感觉,大学的校园电台这些时候播放的流行摇滚已经不再是REM和Violent Femmes,取而代之的是称为后硬核的乐队们。它开始成天播放那些在"音乐节"上和我的乐队一起演出过的乐队。那是曾经收录在"独立地下朋克录音选辑"中大家手握拳头相互传卖的音乐。我也是其中一名自愿者,我从"炸弹掩体"邀请了一些乐队。

关键词： Felix 西班牙内战为自由而战下层人民问过加利弗利亚哲学课在路上 Minor 预科班

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Ciclosporin does not attenuate intracranial hypertension in rats with acute hyperammonaemia

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World Journal of Hepatology 2013年第9期5卷 513-520页

作者： Rikke Hebo Larsen Mette S Kjr Martin Eefsen fin Stolze Larsen Peter Nissen Bjerring Department of Hepatology RigshospitaletUniversity Hospital of Copenhagen2100 CopenhagenDenmark

AIM:To investigate the neuroprotective potential of ciclosporin during acute liver failure. We evaluated the effect of intrathecally administered ciclosporin on intracranial pressure, brain water content and aquaporin-4 expression in a rat model with acute ***:Twenty-four male Wistar rats with portacaval anastomosis were randomised into four groups receiving ciclosporin or vehicle and ammonia or saline infusion. Ciclosporin or vehicle was given intrathecally prior to the ammonia or saline infusion. The ammonia or saline infusion was given intravenously for 4 h,while intracranial pressure and arterial pressure was recorded. At the end of the experiment, cerebral cortex and cerebellar brain tissue was analysed for water and aquaporin-4 ***:The following intracranial pressures were found at the end of the experiment:ammonia + ciclosporin:10.0±1.7 mmHg, ammonia + vehicle:6.8±1.0mmHg, saline + ciclosporin:3.1±0.5 mmHg, saline +vehicle:3.3 ± 0.6 mmHg. Ammonia infusion had a significant effect on intracranial pressure and brain water content, which both were higher in the groups receiving ammonia(P0.2 micromolar)but did not reduce intracranial pressure after 4 h. Furthermore, ciclosporin did not attenuate the increase in cerebral water content, and did not affect ***:Intrathecal administration of ciclosporin does not attenuate intracranial hypertension or brain oedema in rats with portacaval anastomosis and 4 h of ammonia infusion.

关键词： Brain oedema Acute liver failure Neuroprotection Hyperammonaemia Ciclosporin

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Molecular-specific and elemental valence state analyses in corrosion inhibitor research

Molecular-specific and elemental valence state analyses in c...

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第十一届全国腐蚀与防护大会

作者： Matja? fin?gar Faculty of Chemistry and Chemical Engineering University of Maribor

The way the corrosion inhibitor binds to the metallic surface and the distribution of the corrosion inhibitor molecules are two crucial things to mitigate corrosion. These can probably be analysed most effectively by X-ray photoelectron spectroscopy（XPS） and time-of-flight secondary ion mass spectrometry（ToF-SIMS）.In this work, several N-and S-containing molecules are presented as corrosion inhibitors for brass in chloride solution. XPS was used to elucidate the nature of binding of the molecules to the metallic *** addition, angle-dependent XPS analysis was performed to show the layered structure formed when the corrosion inhibitor molecules adsorb on the surface. Furthermore, a gas cluster ion beam（GCIB） was used to sputter the thin organic layer slowly. XPS analysis was performed between each sputtering cycle to reveal the chemical environment of the corrosion inhibitor structures. Principal component analysis was also performed to show the different phases formed on the *** order to determine the surface distribution of different organic and inorganic species on the metallic surface, molecular specific signals obtained by the ToF-SIMS technique are probably the best option currently available. This technique offers the possibility of high mass and lateral resolution, which allows distinguishing between the signals for the analyte and the surface contamination. This work demonstrates the surface distribution of various corrosion inhibitors and their organometallic complexes on the brass surface. Moreover, ToF-SIMS is a practical technique to obtain information about the thermal stability of corrosion inhibitor molecules on metallic surfaces by performing a so called cooling/heating *** latter reveals typical desorption temperatures, which is crucial in many industrial applications. A practical feature in the use of ToF-SIMS is 3D imaging, where sputter and analysis beams are used to obtain the depth distribution of the species of interest

关键词： corrosion inhibitor surface distribution XPS ToF-SIMS 3D imaging

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中文版会声会影8 DV影片采集/编辑/刻录全掌握

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丛书名：全国职业院校技能型紧缺人才培养培训教材

2005年

作者： fin工作室

全国职业院校计算机技能型紧缺人才培养培训教材:本书主要内容包括：中文版会声会影8的系统需求、如何用影片向导快速制作数码影片、编辑器的工作方式、如何输入素材、如何修整素材、如何制作影片特效、添加转场的技巧等。

ISBN: (纸本)7502763627

关键词：图形软件高等教育多媒体

来源：畅想之星图书光盘版（南... 评论

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