Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: A m-xylene adsorbent contains 94 to 99.9 wt % of a Y molecular sieve and 0.1 to 6 wt % of a matrix. The Y molecular sieve consists of a non-crystal-transformed Y molecular sieve and a Y molecular sieve produced by a crystal transformation. The non-crystal-transformed Y molecular sieve is a mesoporous nano Y molecular sieve, which has a crystalline grain size of 20 to 450 nanometers, contains two types of mesoporous pores, and respectively has most probable pore diameters of 5 to 20 nanometers and 25 to 50 nanometers. The adsorbent is used for adsorptive separation of m-xylene from mixed C8 aromatic hydrocarbons.

Abstract: A process for producing para-xylene and ethylbenzene from C8 aromatics containing ethylbenzene includes the steps of sending C8 aromatics containing ethylbenzene to an ethylbenzene liquid-phase adsorption separation device, wherein a suction liquid containing ethylbenzene and a suction residual liquid are obtained after the adsorption separation, and the desorbents in the suction liquid and the suction residual liquid are removed to obtain ethylbenzene and a suction residual oil; sending the suction residual oil to a para-xylene adsorption separation device, and unadsorbed components are discharged as a raffinate from the adsorbent bed; the adsorbent bed is rinsed with a desorbent to desorb the para-xylene therein and obtain an extract; the desorbents in the extract and the raffinate are respectively removed to obtain para-xylene and a raffinate oil; sending the raffinate oil to a xylene isomerization device to carry out xylene isomerization, and the isomerization product is fractionated.

Abstract: Examination of the structure and function of blood vessels is an important means of monitoring the health of a subject. Such examination can be important for disease diagnoses, monitoring specific physiologies over the short- or long-term, and scientific research. This disclosure describes technology and various embodiments of a system and method for imaging blood vessels and the intra-vessel blood flow, using at least laser speckle contrast imaging, with high speed so as to provide a rapid estimate of vessel-related or blood flow-related parameters.

Abstract: A process for producing para-xylene and ethylbenzene from C8 aromatics containing ethylbenzene includes the steps of sending C8 aromatics containing ethylbenzene to an ethylbenzene liquid-phase adsorption separation device, wherein a suction liquid containing ethylbenzene and a suction residual liquid are obtained after the adsorption separation, and the desorbents in the suction liquid and the suction residual liquid are removed to obtain ethylbenzene and a suction residual oil; sending the suction residual oil to a para-xylene adsorption separation device, and unadsorbed components are discharged as a raffinate from the adsorbent bed; the adsorbent bed is rinsed with a desorbent to desorb the para-xylene therein and obtain an extract; the desorbents in the extract and the raffinate are respectively removed to obtain para-xylene and a raffinate oil; sending the raffinate oil to a xylene isomerization device to carry out xylene isomerization, and the isomerization product is fractionated.

Abstract: The present invention provides a composite layer agglomerating adsorbent, comprising an outer adsorbent layer containing a low silica X molecular sieve and an inner adsorbent layer containing a high silica X molecular sieve, the low silica X molecular sieve has a silica/alumina molar ratio of 2.07-2.18, the high silica X molecular sieve has a silica/alumina molar ratio of 2.2-2.5, based on the total amount of the adsorbent, the adsorbent comprises 95.0-100 mass % of the X molecular sieve and 0-5.0 mass % of the matrix, the cation sites of the X molecular sieve in the adsorbent are occupied by a metal of Group IIA or occupied together by a metal of Group IA and a metal of Group IIA. The adsorbent is suitable for the process of adsorptive separation of PX from C8 aromatic hydrocarbons using light aromatic hydrocarbons as desorbent, and has high adsorption selectivity and good mass transfer performance.

Abstract: Examination of the structure and function of blood vessels is an important means of monitoring the health of a subject. Such examination can be important for disease diagnoses, monitoring specific physiologies over the short- or long-term, and scientific research. This disclosure describes technology and various embodiments of a system and method for imaging blood vessels and the intra-vessel blood flow, using at least laser speckle contrast imaging, with high speed so as to provide a rapid estimate of vessel-related or blood flow-related parameters.

Abstract: Examination of the structure and function of blood vessels is an important means of monitoring the health of a subject. Such examination can be important for disease diagnoses, monitoring specific physiologies over the short- or long-term, and scientific research. This disclosure describes technology and various embodiments of a system and method for imaging blood vessels and the intra-vessel blood flow, using at least laser speckle contrast imaging, with high speed so as to provide a rapid estimate of vessel-related or blood flow-related parameters.

Abstract: An object dimension measurement method and apparatus, where the object dimension measurement method includes obtaining a horizontal distance between a photographing terminal and a photographed object or a vertical distance between the photographing terminal and a horizontal plane, obtaining a camera imaging angle when the photographing terminal photographs the photographed object, calculating a deflection angle of a camera in a vertical direction when the photographing terminal photographs the photographed object, obtaining through calculation an imaging distance of the photographed object on a display screen of the photographing terminal according to a trigonometric relationship among the horizontal distance or the vertical distance, the camera imaging angle, the deflection angle, and the imaging distance, and obtaining through conversion an actual dimension of the photographed object according to the imaging distance.

Abstract: The present invention provides a method and apparatus for tracking hand and/or wrist rotation of a user performing exercise. An aspect of the present invention proposes a method of tracking hand and/or wrist rotation of a user performing an exercise, wherein the user wears a marker on his/her hand, the method comprising the steps of: acquiring a first image and a second image of the marker by means of a camera when the hand is in a first posture and a second posture respectively; deriving the angle change of the hand and/or wrist from the change from the first posture to the second posture, based on the first image and the second image and the type of the exercise that the user is performing; and outputting the angle change of the hand and/or wrist, wherein the marker approximates a rectangular block, the marker has an opening for accommodating the palm(s) of the user and the side of the marker along the direction perpendicular to the palm is substantially shorter than two other sides.

Abstract: Examination of the structure and function of blood vessels is an important means of monitoring the health of a subject. Such examination can be important for disease diagnoses, monitoring specific physiologies over the short- or long-term, and scientific research. This disclosure describes technology and various embodiments of a system and method for imaging blood vessels and the intra-vessel blood flow, using at least laser speckle contrast imaging, with high speed so as to provide a rapid estimate of vessel-related or blood flow-related parameters.

Abstract: An object dimension measurement method and apparatus, where the object dimension measurement method includes obtaining a horizontal distance between a photographing terminal and a photographed object or a vertical distance between the photographing terminal and a horizontal plane, obtaining a camera imaging angle when the photographing terminal photographs the photographed object, calculating a deflection angle of a camera in a vertical direction when the photographing terminal photographs the photographed object, obtaining through calculation an imaging distance of the photographed object on a display screen of the photographing terminal according to a trigonometric relationship among the horizontal distance or the vertical distance, the camera imaging angle, the deflection angle, and the imaging distance, and obtaining through conversion an actual dimension of the photographed object according to the imaging distance.

Abstract: The present invention provides a method and apparatus for tracking hand and/or wrist rotation of a user performing exercise. An aspect of the present invention proposes a method of tracking hand and/or wrist rotation of a user performing an exercise, wherein the user wears a marker on his/her hand, the method comprising the steps of: acquiring a first image and a second image of the marker by means of a camera when the hand is in a first posture and a second posture respectively; deriving the angle change of the hand and/or wrist from the change from the first posture to the second posture, based on the first image and the second image and the type of the exercise that the user is performing; and outputting the angle change of the hand and/or wrist, wherein the marker approximates a rectangular block, the marker has an opening for accommodating the palm(s) of the user and the side of the marker along the direction perpendicular to the palm is substantially shorter than two other sides.

Abstract: A method of displaying smoke propagation in a region minimizes distractions due to building structural elements so that a user can focus on the smoke flow. An associated apparatus includes a plurality of smoke detectors and a display device which respond to smoke in the building. The apparatus generates the displays indicating the path of propagation of the developing smoke between floors. The display device can be wirelessly coupled to the apparatus.