摘要:
A machine for the manufacture of a web of single-faced corrugated board comprises a nip pressure device for a liner web to be pressed against a corrugated paper web. This nip pressure device comprises a nip pressure belt which is comprised of a fabric of metal with warp threads and weft threads. The warp threads and weft threads are connected to each other at least where intersecting.
摘要:
A sensor element for limiting-current sensors for determining the lambda value of gas mixtures, in particular of exhaust gases from internal combustion engines. The sensor element has inner and outer pump electrodes arranged on a solid electrolyte foil. The inner pump electrode is arranged in a diffusion channel that is bordered by a diffusion barrier, the pump electrode lying in the diffusion direction of the gas mixture downstream of the diffusion barrier. The gas entry hole, essentially perpendicular to the surface of the solid electrolyte foil, is led through the solid electrolyte foil into the diffusion channel. The diffusion barrier is arranged so as to be set back in the diffusion channel from the interior wall of the gas entry hole. For manufacturing the sensor element, a chamber created upstream of the diffusion barrier is filled with a cavity-creating material, which evaporates in the sintering of the sensor element and thus forms a cavity in the diffusion channel.
摘要:
A measuring sensor for determining gas compositions, includes a substrate consisting essentially of Al.sub.2 O.sub.3, electrodes disposed on the substrate, a sensor layer consisting essentially of TiO.sub.2 disposed above the electrodes, and an adhesion-improving layer which consists essentially of Al.sub.2 TiO.sub.5 and which is disposed on the substrate, the adhesion-improving layer being at least partially connected with the electrodes. The adhesion-improving layer is provided to improve the adhesiveness of the electrodes, and includes a material in common with the material of the sensor layer, i.e., Ti. The material of the adhesion-improving layer is selected so as to prevent a chemical reaction between the materials of the substrate and the sensor layer.
摘要翻译:用于确定气体组成的测量传感器包括基本上由Al 2 O 3组成的基底,设置在基底上的电极,基本上由设置在电极上方的TiO 2组成的传感器层,以及基本上由Al 2 TiO 5构成的粘附改善层, 所述基底,所述粘附改善层至少部分地与所述电极连接。 提供粘附改善层以改善电极的粘合性,并且包括与传感器层的材料即Ti相同的材料。 选择粘合性改善层的材料,以防止基板的材料与传感器层之间的化学反应。
摘要:
In the formation of finished slide surfaces for slide rails on a track for an electromagnetically levitated vehicle, the track is constructed as a girder-like beam with the slide rails located on cantilevered parts of the upper surface of the beam. The beam can be formed of prestressed concrete. Initially the slide rails are provided with a height oversize. The height oversize part of the slide rails is removed and the slide surface of the rails are finished to the desired degree. The height oversize part is removed by cutting and grinding devices mounted on a machine frame movable over the upper surface of the track. The machine frame is adjustable in the vertical direction from a datum plane formed by the lower surfaces of support stators secured to the undersides of the cantilevered parts of the track. The machine frame rides on the upper surface of the beam and is in contact with the lower surfaces of the support stators.
摘要:
An artificial island located on the high sea is formed of a support structure and a platform mounted on the upper end of the support structure. During erection, the support structure, not completed for its full height, is moved into position and founded on the ocean floor. The platform is floated into position and mounted on the upper end of the support structure. The height of the support structure is then extended until the final height is reached. During the completion of the upper end of the support structure, the platform is lifted so that it remains on top of the support structure. A housing is provided around the upper end of the support structure so that it can be sealed from the environment for completing the construction of the upper end of the support structure.
摘要:
A method for obtaining human microglial precursor cells, comprising: (a) providing a cell population comprising neural precursor cells, wherein the cell population is obtainable from embryoid bodies differentiated from human pluripotent stem cells; (b) differentiating the cell population comprising neural precursor cells into microglial precursor cells by culturing in medium comprising a growth factor selected from the group consisting of insulin and insulin-like growth factors; (c) expanding and enriching microglial precursor cells in medium comprising a growth factor selected from the group consisting of insulin and insulin-like growth factors and 10 to 150 ng/ml GM-CSF; and (d) isolating microglial precursor cells comprising CD45-positive cells.
摘要翻译:一种获得人小胶质细胞前体细胞的方法,包括:(a)提供包含神经前体细胞的细胞群,其中所述细胞群可从人多能干细胞分化的胚状体获得; (b)通过在包含选自胰岛素和胰岛素样生长因子的生长因子的培养基中培养将包含神经前体细胞的细胞群分化为小胶质前体细胞; (c)在包含选自胰岛素和胰岛素样生长因子和10至150ng / ml GM-CSF的生长因子的培养基中扩增和富集小神经胶质前体细胞; 和(d)分离包含CD45阳性细胞的小胶质前体细胞。
摘要:
The reference air channel of a gas sensor or a lambda probe having a laminate body produced by printing technology is provided. The laminate body is produced by printing a suitably structured layer onto a neighboring layer, for example, by screen printing.
摘要:
An electrochemical sensor, in particular for determining the oxygen content in exhaust gases of internal combustion engines, has a solid electrolyte element having at least one first electrode, at least one second electrode, and at least one heating element. The second electrode located to the heating element is connected to ground, and the first electrode coacting with the second electrode is negatively polarized, a negative operating voltage being provided.
摘要:
For the reduction of internal stresses and formation of cracks caused thereby, an exhaust gas probe includes two measuring electrodes separated by a solid electrolyte layer made substantially of ZrO2 and a circuit-board conductor layer for electrically heating the solid electrolyte layer. The circuit-board conductor layer is firmly connected to the solid electrolyte layer via a first sealingly sintered insulating layer made of an Al2O3-containing material. A pore-forming material is added to the Al2O3-containing material before. sintering.
摘要:
A ceramic layer system including at least two layers having respective ion conductivities which are substantially different includes a substrate layer composed of a ceramic material and having substantially no ion conductivity; and at least one conducting layer positioned adjacent to the substrate layer, containing coated ceramic particles composed of ceramic particles composed of a ceramic material having no substantial ion conductivity which are coated with a material having a substantial ion conductivity so that each conducting layer of the at least one conducting layer has a continuous phase after sintering composed of the material which has a substantial ion conductivity and so that the at least one conducting layer has an ion conductivity effective to conduct ions. A method of producing a gas sensor for detecting small quantities of at least one gas in gas mixtures includes providing a substrate layer composed of ceramic particles composed of a material having substantially no ion conductivity; applying a layer composed of coated ceramic particles onto the substrate layer, the coated ceramic particles being composed of ceramic particles composed of a material that has no substantial ion conductivity coated with a material which has a substantial ion conductivity at the operating temperature of the gas sensor; applying at least one functional layer onto the layer composed of coated ceramic particles to provide a green body; preheating the green body to remove binding agents, plastifying agents, and any additional organic constituents; and sintering the green body after preheating by heating to a temperature effective to sinter the green body so that the layer comprised of coated ceramic particles has a continuous phase comprised of the material which has a substantial ion conductivity.