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As a novel X-ray focusing technology, lobster eye micro-pore optics (MPO) feature both a wide observing field of view and true imaging capability, promising sky monitoring with significantly improved sensitivity and spatial resolution in soft X-rays. Since first proposed by Angel (1979), the optics have been extensively studied, developed and trialed over the past decades. In this Letter, we report on the first-light results from a flight experiment of the Lobster Eye Imager for Astronomy ($LEIA$), a pathfinder of the wide-field X-ray telescope of the Einstein Probe mission. The piggyback imager, launched in July 2022, has a mostly un-vignetted field of view of $18.6^\circ \times 18.6^\circ $. Its spatial resolution is in the range of 4$-$7 arcmin in FWHM and the focal spot effective area is 2$-$3 cm$^2$, both showing only mild fluctuations across the field of view. We present images of the Galactic center region, Sco X-1 and the diffuse Cygnus Loop nebular taken in snapshot observations over 0.5$-$4 keV. These are truly wide-field X-ray images of celestial bodies observed, for the first time, by a focusing imaging telescope. Initial analyses of the in-flight data show excellent agreement between the observed images and the on-ground calibration and simulations. The instrument and its characterization are briefly described, as well as the flight experiment. The results provide a solid basis for the development of the present and proposed wide-field X-ray missions using lobster eye MPO., Comment: 11 pages, 4 figures. Accepted for publication in Astrophysical Journal Letter

We aimed to evaluate the specificity of 12 tumor markers related to colon carcinoma and identify the most sensitive index. Bhattacharyya distance was used to evaluate the index. Then, different index combinations were used to establish a support vector machine (SVM) diagnosis model of malignant colon carcinoma. The accuracy of the model was checked. High accuracy was assumed to indicate the high specificity of the index. The Bhattacharyya distances of carcinoembryonic antigen, neuron-specific enolase, alpha-feto protein, and CA724 were the largest, and those of CYFRA21-І, CA125, and UGT1A83 were the second largest. The specificity of the combination of the above seven indexes was higher than that of other combinations, and the accuracy of the established SVM identification model was high. Using Bhattacharyya distance detection and establishing an SVM model based on different serum marker combinations can increase diagnostic accuracy, providing a theoretical basis for application of mathematical models in cancer diagnosis.

Metallization of indium-tin-oxide (ITO)-coated glass using an Al/Cr composite thin film is a common practice for chip-on-glass packaging. However, the reliability of the Cr/ITO interface is always a problem because of poor adhesion due to the chemical inertness of ITO. In this study, the adhesion strength between a Cr film and ITO coated glass was enhanced by forming an intermediate oxide layer at the interface. To find out the optimal interface condition, various amounts of oxygen were doped at the interface. The results show that the adhesion strength and thermal stability are both enhanced by the interfacial doping of oxygen. This enhancement is found to be related to the flow rate of oxygen and, therefore, to the oxide thickness. Maximum improvement occurs when the flow rate of oxygen is set at 6 sccm during doping, and at this rate the interface oxide thickness also reaches its maximum value. Under this condition, the Cr/ITO interface also shows the best thermal stability. Wire bond testing shows tha...

To detect the susceptibility of urogenital chlamydia trachomatis(CT) to 12 kinds of diuretic traditional Chinese medicines.The inhibitory activity of these medicines for CT was detected by microculture technique of McCoy cell in vitro.All the 12 kinds of diuretic traditional Chinese medicines had inhibitory activities for urogenital CT, with minimal inhibitory concentrations (MICs) from 0.122 mg.ml-1 to 62.5 mg.ml-1. The activities of Dianthus superbus L., Poria cocos(Shcw.) Woft, Polyporus umbellatus and Artemissia capillaris were stronger. The number and volume of CT inclusions reduced gradually and disappeared finally with the rise of concentration.All the 12 kinds of diuretic traditional Chinese medicines possess some inhibitory activity for urogenital CT.

In order to study the frequency and complications related to pancreatic fistula following distal pancreatectomy we have reviewed 19 patients operated on between January 1st 1981 and February 28 1986. There was no mortality but the incidence of pancreatic fistula was 52%. 40% of these cases developed a subphrenic abscess (21% of the total number of cases). These fistulas closed after an average post-operative period of 42 days. Reoperation for an infected collection was required in 4 cases. The incidence of pancreatic fistula was not related to the initial pancreatic pathology. Splenectomy did not influence the incidence of subphrenic abscess. Different techniques of closure of the distal pancreas after resection have not changed the incidence of this complication. The use of somatostatin appears to favourably influence the course of the fistula. These conclusions tend to confirm the results of other reported series.