Abstract: A tuning method for a collimator of a CT machine, which, in each cycle of X-ray scan operation and stop, may include determining whether an X-ray is generated from the anode plate; calculating the Z-direction heating displacement of the slot plate during the current scan based on a detected X-ray, driving the slot plate to move by the heating displacement in the Z-direction, calculating the total Z-direction heating displacement of the slot plate at the end of the current scan, calculating the cooling displacement of the slot plate during the current stop based on the stop time of the X-ray, and driving the slot plate to move.

Abstract: Disclosed herein are methods and compositions for the identification of teloRNA marks to assess the differentiation status of an individual stem cell or a population of stem cells, to diagnose whether and to what extent a stem cell or stem cell culture has already initiated cell differentiation, and to monitor the differentiation status of an individual stem cell or a stem cell culture during passage. The use of these methods and compositions to monitor the pluripotency and differentiation status of a stem cell or stem cell culture during differentiation enables the identification of undifferentiated and pluripotent stem cells prior to the initiation of differentiation.

Abstract: Disclosed herein are methods and compositions for the identification of teloRNA marks to assess the differentiation status of an individual stem cell or a population of stem cells, to diagnose whether and to what extent a stem cell or stem cell culture has already initiated cell differentiation, and to monitor the differentiation status of an individual stem cell or a stem cell culture during passage. The use of these methods and compositions to monitor the pluripotency and differentiation status of a stem cell or stem cell culture during differentiation enables the identification of undifferentiated and pluripotent stem cells prior to the initiation of differentiation.

Abstract: A novel conjugate comprising a support material and an oligomer or polymer of a saccharide, in which the oligomer or polymer is linked to the support material via one or more ether, carbamate, ester, or imino linkages between the saccharide and the support material, and in which the saccharide is fully functionalized, provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.

Abstract: A novel conjugate comprising a support material and an oligomer or polymer of a saccharide, in which the oligomer or polymer is linked to the support material via one or more ether, carbamate, ester, or imino linkages between the saccharide and the support material, and in which the saccharide is fully functionalized, provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.

Abstract: A flash card management apparatus has a progression of compartments that govern or direct which cards are reviewed at a given drill session. When the progression is ordered by card capacities, a given card will come up for review possibly at each drill session for the first few sessions, and then come up for review with ever decreasing frequency thereafter. The use of the management apparatus will assure that each card will be not only periodically reviewed, but also reviewed a fixed number of times before it is put on the side.

Abstract: A pancake cooking apparatus has an elongate and preferably open-ended griddle and a batter scraper by which a mass of batter is spread from one end of the griddle to the other. Thickness uniformity is realized by structures for keeping the scraper's edge and the griddle's cooking surface spaced a fixed distance apart during the batter spreading step. The pancake cooking apparatus at times includes a plurality of side-by-side griddles for high-volume manual cooking operations. A method for cooking uniformly thin, rectangular pancakes uses the cooking apparatus.