-
公开(公告)号：US5183598A
公开(公告)日：1993-02-02
申请号：US664626
申请日：1991-03-04
CPC分类号： B29C67/0074 , Y10S428/913 , Y10T156/1075 , Y10T156/108 , Y10T156/13
摘要： Process for obtaining three-dimensional objects, according to which process a sheet (2A, 2B, 2C) is prepared, which sheet is composed of a material, the solubility of which varies when it is subjected to a specific radiation, and of fibers or of a screen for reinforcement, the sheet having a sufficient rigidity to be handled and being capable of adhering on a similar sheet. The sheet is subjected to said radiation (18) in a defined zone, and then a new sheet is fixed onto it and the passing of radiation is recommenced, and then the stack is subjected to a selective dissolving which causes the desired object (31) to appear.
摘要翻译： 用于获得三维物体的方法，根据该方法，制备片材（2A，2B，2C），该片材由材料组成，其材料在其经受特定辐射时变化，纤维或 用于加强的筛网，该片材具有足够的刚度被处理并且能够粘附在类似的片材上。 片材在限定的区域内经受所述辐射（18），然后将新的片材固定在其上并重新开始辐射通过，然后对叠层进行选择性溶解，使得所需物体（31） 出现。
-
公开(公告)号：US20070026524A1
公开(公告)日：2007-02-01
申请号：US11443223
申请日：2006-05-31
IPC分类号： G01N33/03
CPC分类号： G01N33/2876 , G01N33/2882
摘要： A method for evaluating the acidity of oil samples in small amounts, applicable at any stage of the petroleum industry, includes labelling by an isotope of a chemical element present in at least one acid function present in petroleum samples. Isotopic enrichment of the samples is then determined by isotope ratio mass spectrometry (IRMS). The acidity of the samples is deduced therefrom. This method is an alternative to the measurement of the Total Acid Number (TAN). In particular, it represents the only possibility to reliably measure the acidity of oil samples available in small amounts. The method can be applied to the economic evaluation of a hydrocarbon production field, to the determination of the carbon range responsible for the acidity of a crude, or to monitoring of the evolution of the acid distribution of a site polluted by hydrocarbons.
摘要翻译： 用于评估在石油工业的任何阶段适用的少量油样的酸度的方法包括在石油样品中存在的至少一种酸性功能中存在的化学元素的同位素标记。 然后通过同位素比质谱（IRMS）测定样品的同位素富集。 从中推导出样品的酸度。 该方法是总酸值（TAN）测量的替代方法。 特别地，它代表了可靠地测量少量可用的油样品的酸度的唯一可能性。 该方法可应用于烃生产领域的经济评价，负责原油酸度的碳范围的测定，或监测受烃类污染地点酸分布演变情况。
-
公开(公告)号：US07618824B2
公开(公告)日：2009-11-17
申请号：US11443223
申请日：2006-05-31
IPC分类号： G01N33/03
CPC分类号： G01N33/2876 , G01N33/2882
摘要： A method for evaluating the acidity of oil samples in small amounts, applicable at any stage of the petroleum industry, includes labelling by an isotope of a chemical element present in at least one acid function present in petroleum samples. Isotopic enrichment of the samples is then determined by isotope ratio mass spectrometry (IRMS). The acidity of the samples is deduced therefrom. This method is an alternative to the measurement of the Total Acid Number (TAN). In particular, it represents the only possibility to reliably measure the acidity of oil samples available in small amounts. The method can be applied to the economic evaluation of a hydrocarbon production field, to the determination of the carbon range responsible for the acidity of a crude, or to monitoring of the evolution of the acid distribution of a site polluted by hydrocarbons.
摘要翻译： 用于评估在石油工业的任何阶段适用的少量油样的酸度的方法包括在石油样品中存在的至少一种酸性功能中存在的化学元素的同位素标记。 然后通过同位素比质谱（IRMS）测定样品的同位素富集。 从中推导出样品的酸度。 该方法是总酸值（TAN）测量的替代方法。 特别地，它代表了可靠地测量少量可用的油样品的酸度的唯一可能性。 该方法可应用于烃生产领域的经济评价，负责原油酸度的碳范围的测定，或监测受烃类污染地点酸分布演变情况。
-
公开(公告)号：US06764636B1
公开(公告)日：2004-07-20
申请号：US09914712
申请日：2001-08-31
IPC分类号： B05C1104
摘要： The invention concerns a fast three-dimensional modeling method comprising the following steps: a phase which consists in transforming the raw material in the work space (32) by means of a device inducing transformation (1); at least at one moment, a phase which consists in supplying non-transformed material, downstream of the doctor blade; a phase which consists in covering the transformed material (PI) with non-transformed material (MAT), which consists in moving the blade in a direction (F), driving in rotation about an axis a rolling member (26, 27) whereon an extruded log of non-transformed raw material (28) is wound, arranging a pushing member (22) such that its proximal edge (23) coincides with the surface of said work space, and positioning said rolling member downstream of the pushing member, and opposite thereof, so as to channel the extruded log of non-tramsformed material towards a cavity formed between the proximal edge and the rolling member facing it.
摘要翻译： 本发明涉及一种快速三维建模方法，包括以下步骤：一个阶段，其中包括通过设备诱导变换（1）来转换工作空间（32）中的原材料; 至少在一个时刻，包括在刮刀下游提供未变形材料的相位; 该相包括用非变形材料（MAT）覆盖变形材料（PI），其包括沿着方向（F）移动叶片，绕轴线旋转驱动滚动构件（26,27），其中 卷绕未转化原料（28）的挤压成形品，配置推压部件（22），使其近端边缘（23）与所述工作空间的表面重合，并将所述滚动部件定位在推动部件的下游， 以使得非成型材料的挤压成型体朝向形成在近侧边缘和面向其的滚动部件之间的空腔。
-
-
-
搜索结果
4 条记录 (耗时 0.023 秒)
