Irradiated membrane for cell expansion

    公开(公告)号:US10974201B2

    公开(公告)日:2021-04-13

    申请号:US13120375

    申请日:2009-09-23

    摘要: A membrane for cultivating adherent or suspension cells, in particular adherent cells. The membrane permits adhesion and proliferation of the cells due to the irradiation of the wet or dry membrane with gamma or beta rays or an electron beam in a dose of from 12.5 to 175 kGy in the presence of oxygen. The resulting membrane may be used without any pre-treatment with surface-modifying substances. A method for preparing such an irradiated membrane for cultivating adherent or suspension cells. Methods of using such a membrane for cultivating adherent or suspension cells.

    Method of treating a subject suffering from end stage renal disease against cardiovascular disease
    2.
    发明授权
    Method of treating a subject suffering from end stage renal disease against cardiovascular disease 有权
    治疗终末期肾病患者抗心血管疾病的方法

    公开(公告)号:US08657775B2

    公开(公告)日:2014-02-25

    申请号:US12585054

    申请日:2009-09-01

    摘要: The present invention relates to high cut-off hemodialysis membranes for the treatment of chronic hemodialysis (CHD) patients, with the potential to improve long-term survival of these patients by reducing the risk of cardiovascular disease, through down-regulation of monocyte activation in the blood. Monocytes are the major circulating blood cells involved in the progression of cardiovascular disease. High cut-off hemodialysis in chronic dialysis patients results in a sustained decrease in expression of monocyte cell-surface proteins that direct the movement of these cells from the blood to the walls of blood vessels, where they promote the progression of arterial disease (atherosclerosis) that leads to cardiovascular disease (CVD); heart disease, strokes and peripheral vascular disease.

    摘要翻译: 本发明涉及用于治疗慢性血液透析(CHD)患者的高截止血液透析膜,可通过降低心血管疾病的风险来改善这些患者的长期存活,通过下调单核细胞活化 血液。 单核细胞是涉及心血管疾病进展的主要循环血细胞。 慢性透析患者的高截止血液透析导致单核细胞表面蛋白质的表达持续下降,从而将这些细胞从血液移动到血管壁,在那里它们促进动脉疾病(动脉粥样硬化)的进展, 导致心血管疾病(CVD); 心脏病,中风和外周血管疾病。

    Plasma separation membrane
    4.
    发明授权
    Plasma separation membrane 有权
    等离子体分离膜

    公开(公告)号:US08051991B2

    公开(公告)日:2011-11-08

    申请号:US12307670

    申请日:2007-06-25

    摘要: A process for manufacturing of an asymmetric hollow fiber membrane, comprising the steps of extruding a polymer solution through the outer ring slit of a hollow fiber spinning nozzle, simultaneously extruding a center fluid through the inner bore of the hollow fiber spinning nozzle, into a precipitation bath, whereby the polymer solution contains 10 to 26 wt-% of polysulfone (PSU), polyethersulfone (PES) or polyarylethersulfone (PAES), 8 to 15 wt-% polyvinylpyrrolidone (PVP), 55 to 75 wt-% N-alkyl-2-pyrrolidone (NAP) and 3 to 9 wt-% water the centre fluid contains 70 to 90 wt-% N-alkyl-2-pyrrolidone (NAP) and 10 to 30 wt-% water, and the precipitation bath contains 0 to 20 wt-% N-alkyl-2-pyrrolidone (NAP) and 80 to 100 wt-% water.

    摘要翻译: 一种不对称中空纤维膜的制造方法,其特征在于,包括以下步骤:通过中空纤维纺丝喷嘴的外圈狭缝挤出聚合物溶液,同时将中心流体通过中空纤维纺丝喷嘴的内孔挤出成为沉淀物 由此聚合物​​溶液含有10-26重量%的聚砜(PSU),聚醚砜(PES)或聚芳醚砜(PAES),8-15重量%的聚乙烯吡咯烷酮(PVP),55-75重量%的N-烷基 - 2-吡咯烷酮(NAP)和3〜9重量%的水,中心流体含有70〜90重量%的N-烷基-2-吡咯烷酮(NAP)和10〜30重量%的水,沉淀浴中含有0〜 20重量%的N-烷基-2-吡咯烷酮(NAP)和80-100重量%的水。

    HYDROPHILIC MEMBRANES WITH A NON-IONIC SURFACTANT
    6.
    发明申请
    HYDROPHILIC MEMBRANES WITH A NON-IONIC SURFACTANT 有权
    具有非离子表面活性剂的亲水膜

    公开(公告)号:US20100320146A1

    公开(公告)日:2010-12-23

    申请号:US12680531

    申请日:2008-09-26

    摘要: The invention relates to hydrophilic membranes which are supplemented or treated with a non-ionic surfactant and processes for preparing such membranes. The membranes are particularly suitable for plasma separation or for haemodialysis and haemodiafiltration, but can also advantageously be used in other applications. Accordingly, the invention is further directed to the use of such membranes for plasma separation, plasma filtration, micro filtration, plasma therapy, haemodialysis and haemodiafiltration or cell filtration applications, respectively. The treated hydrophilic membranes show excellent biocompatibility, such as reduced platelet drop and decreased TAT levels.

    摘要翻译: 本发明涉及用非离子表面活性剂补充或处理的亲水膜及其制备方法。 该膜特别适用于血浆分离或用于血液透析和血液透析过滤,但也可有利地用于其它应用。 因此,本发明进一步涉及这种膜用于血浆分离,血浆过滤,微过滤,血浆治疗,血液透析和血液透析或细胞过滤应用。 经处理的亲水膜显示出优异的生物相容性,例如减少血小板降低和降低的TAT水平。

    Plasma Separation Membrane
    7.
    发明申请
    Plasma Separation Membrane 有权
    等离子体分离膜

    公开(公告)号:US20090283470A1

    公开(公告)日:2009-11-19

    申请号:US12307678

    申请日:2007-06-25

    IPC分类号: B01D69/08 B01D67/00 B01D69/02

    摘要: A process for manufacturing of an asymmetric hollow fibre membrane, comprising the steps of extruding a polymer solution through the outer ring slit of a hollow fibre spinning nozzle, simultaneously extruding a centre fluid through the inner bore of the hollow fibre spinning nozzle, into a precipitation bath, whereby the polymer solution contains 10 to 26 wt-% of polysulfone (PSU), polyethersulfone (PES) or polyarylethersulfone (PAES), 8 to 15 wt-% polyvinylpyrrolidone (PVP) and 60 to 80 wt-% N-alkyl-2-pyrrolidone (NAP), the centre fluid contains 60 to 70 wt-% N-alkyl-2-pyrrolidone (NAP) and 30 to 40 wt-% water, and the precipitation bath contains 70 to 82 wt-% N-alkyl-2-pyrrolidone (NAP) and 18 to 30 wt-% water.

    摘要翻译: 一种不对称中空纤维膜的制造方法,其特征在于,包括以下步骤:通过中空纤维纺丝喷嘴的外圈狭缝挤出聚合物溶液,同时将中心流体通过中空纤维纺丝喷嘴的内孔挤出成为沉淀物 由此聚合物​​溶液含有10-26重量%的聚砜(PSU),聚醚砜(PES)或聚芳醚砜(PAES),8-15重量%聚乙烯吡咯烷酮(PVP)和60-80重量%N-烷基 - 2-吡咯烷酮(NAP),中心流体含有60〜70重量%的N-烷基-2-吡咯烷酮(NAP)和30〜40重量%的水,沉淀浴含有70〜82重量%的N-烷基 -2-吡咯烷酮(NAP)和18-30wt%水。

    METHOD FOR ADAPTIVE PREDICTION OF STACK VOLTAGE IN AUTOMOTIVE FUEL CELL SYSTEMS
    8.
    发明申请
    METHOD FOR ADAPTIVE PREDICTION OF STACK VOLTAGE IN AUTOMOTIVE FUEL CELL SYSTEMS 有权
    汽车燃料电池系统堆叠电压自适应预测方法

    公开(公告)号:US20080076012A1

    公开(公告)日:2008-03-27

    申请号:US11534341

    申请日:2006-09-22

    IPC分类号: H01M2/00

    摘要: A method for revising a reference polarization curve of a fuel cell stack that identifies the relationship between the voltage and the current of the stack over time. When the stack is operating at a low load where kinetic voltage losses of the stack dominate, a first adaptation value is revised as the difference between the actual stack voltage and the stack voltage of the reference polarization curve. When the stack is operating at higher loads where ohmic voltage losses of the stack dominate, a second adaptation value is revised as the difference between the actual stack voltage and the stack voltage of the reference polarization curve.

    摘要翻译: 一种用于修改燃料电池堆的参考极化曲线的方法,其识别堆叠随时间的电压和电流之间的关系。 当堆栈以堆叠的动态电压损失为主的低负载运行时,第一适配值被修改为实际堆叠电压与参考极化曲线的堆叠电压之间的差值。 当堆栈工作在堆叠的欧姆电压损耗主导的较高负载时,第二适配值被修改为实际堆叠电压和参考极化曲线的堆叠电压之间的差。

    Reduction of voltage loss by voltage cycle through the use of specially formed bipolar plates
    9.
    发明申请
    Reduction of voltage loss by voltage cycle through the use of specially formed bipolar plates 有权
    通过使用特殊形成的双极板降低电压周期的电压损耗

    公开(公告)号:US20060275644A1

    公开(公告)日:2006-12-07

    申请号:US11142762

    申请日:2005-06-01

    IPC分类号: H01M8/02

    摘要: A fuel cell that includes specially configured bipolar plates that separate the reactant gas flow field in an active area of the fuel cell into a primary flow channels and a secondary channels. In one embodiment, the primary flow channels are in use over the entire operating range of the fuel cell and the secondary flow channels are only in use at high cell current outputs. At low power demands, the primary channels operate at a voltage below 0.8 volts and provides a gas current density of more than 0.2 A/cm2. The secondary flow channels have no gas supply and operate at mass transport limited conditions. Because of this design, voltage cycling is significantly reduced or eliminated, thus increasing the life of the fuel cell.

    摘要翻译: 一种燃料电池,其包括特殊配置的双极板,其将燃料电池的有效区域中的反应气体流场分离成主流道和次流道。 在一个实施例中,主流动通道在燃料电池的整个操作范围内使用,并且次级流动通道仅在高电池电流输出时使用。 在低功率需求下,主通道工作在低于0.8伏特的电压,并提供大于0.2A / cm 2的气体电流密度。 二次流动通道没有气体供应并且在大规模运输有限的条件下运行。 由于这种设计,电压循环显着降低或消除,从而增加燃料电池的寿命。

    Reduction of voltage loss caused by voltage cycling by use of a rechargeable electric storage device
    10.
    发明申请
    Reduction of voltage loss caused by voltage cycling by use of a rechargeable electric storage device 审中-公开
    通过使用可再充电蓄电装置降低由电压循环引起的电压损失

    公开(公告)号:US20060147770A1

    公开(公告)日:2006-07-06

    申请号:US11028887

    申请日:2005-01-04

    申请人: Bernd Krause

    发明人: Bernd Krause

    IPC分类号: H01M8/04

    摘要: A fuel cell system that employs a fuel cell stack and a supplemental power source, such as a battery or an ultra-capacitor. The power source provides supplemental power in addition to the output power of a fuel cell stack for high load demands. The fuel cell system includes a power management controller that controls the power output from the supplemental power source and the fuel cell stack as the demand on the fuel cell stack changes. During low load demands, where the voltage across the fuel cell stack may increase above a potential that could cause oxidation of platinum catalyst particles within the fuel cells in the stack, the power management controller causes the fuel cell stack to charge the power source so as to decrease the voltage output on the stack.

    摘要翻译: 一种燃料电池系统,其使用燃料电池堆和补充电源,例如电池或超电容器。 除了用于高负载需求的燃料电池堆的输出功率之外,电源还提供补充功率。 燃料电池系统包括电力管理控制器,当燃料电池堆的需求发生变化时,控制从补充电源和燃料电池堆输出的功率。 在低负载要求期间,燃料电池堆上的电压可能增加到可能导致堆叠内的燃料电池内的铂催化剂颗粒氧化的电位,电力管理控制器使燃料电池堆对电源充电, 以降低堆叠上的电压输出。