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data and code of the paper: Mind wandering state detection during video-based learning via EEG

Rapid 3D radiation field evaluation is the key point of occupational dose optimization for design and operation of nuclear power plant. Based on the requirement analysis from designers and operators of nuclear power plant, three key technical issues are identified and solved through the development of the RPOS system, which are rapid calculation of 3D radiation field, reconstruction of the calculated 3D radiation field based on measured data, and occupational dose optimization based on 3D radiation field. Operational measurements of dose rate from in-service nuclear power plants are used to test the RPOS system, which shows that accurate 3D radiation field can be rapidly generated by the RPOS system and effectively used on the occupational dose optimization for on-site workers. The applications of the established rapid 3D radiation field evaluation technique on HPR1000 unit design provide evidence on its feasibility in a large scale, the improvement of radiation protection design efficiency and the enhancement of ALARA assessment and justification for nuclear power plants.

Jing Li, Yu Ma, Xiaohan Huang, Lanfang Xu, Shaohua Tang Department of Ophthalmology, Beijing Jishuitan Hospital, Beijing, People’s Republic of ChinaCorrespondence: Jing Li; Shaohua TangBeijing Jishuitan Hospital, 31 Xinjiekou East St., Xicheng District, Beijing 100035, People’s Republic of ChinaTel +86-10-58398208Email lijing_pku@163.com; yanke_jst@163.comBackground: The clinical efficacy of eye drops in the treatment of recurrent corneal erosion syndrome (RCES) is not satisfactory. Many studies have confirmed the positive effect of the bandage contact lens (BCL) in corneal diseases, but not many in patients with RCES. The purpose of this study is to investigate the efficacy of the BCL compared with deproteinized calf blood extract eye gel in the initial treatment of RCES.Methods: Forty-seven patients with RCES treated in our hospital from September 2010 to September 2018 were retrospectively analyzed, including 24 cases (26 eyes) in the bandage contact lenses (BCLs) group wearing bandage contact lens and 23 cases (24 eyes) in the drug group treated with deproteinized calf blood extract eye gel. The efficacy was evaluated after 3 months of treatment, with a mean follow-up time of 21.15 ± 1.71 months in the BCL group and 20.87 ± 1.89 months in the drug group. Corneal erosion resolution, pain relief, visual acuity recovery time, recurrence and complications were observed.Results: After 3 months of treatment, 22 eyes (22/26, 84.6%) in the BCLs group achieved complete resolution, compared with 14 eyes (14/24, 58.3%) in the drug group (P < 0.05). The corneal healing time in the BCLs group was 4.77 ± 4.51 weeks, which was significantly shorter than that in the drug group (9.83 ± 5.93 weeks (P < 0.01)). At 1 and 2 months after treatment, the visual analogue score (VAS) in the BCLs group (3.28 ± 1.15 at 1 month and 1.90 ± 0.77 at 2 months) decreased more significantly than that in the drug group (4.54 ± 0.89 at 1 month and 2.43 ± 0.93 at 2months, P =0.000 at 1 month and P=0.034 at 2 months). At 3 months after treatment, the mean BCVA in the BCL group (logMAR 0.03± 0.08) improved more significantly than that in the drug group (logMAR 0.14± 0.12,P=0.001). The complete recovery time of visual acuity was 5.46 ± 4.43 weeks in the BCLs group, compared with 10.33 ± 6.12 weeks in the drug group (P =0.003). During further follow-up, recurrence was observed in 2 eyes (2/22, 9.1%) of the BCLs group and 6 eyes (6/14, 42.8%) of the drug group. No patient in both groups developed adverse side effects.Conclusion: Bandage contact lenses are safe and effective in the initial treatment of RCES. Compared with topical deproteinized calf blood extract eye gel, the use of BCLs can provide a higher cure rate, better pain control, faster visual recovery and lower recurrence rate.Trial Registration: Chinese Clinical Trial Registry, ChiCTR2000031241. Registered 25 March 2020- Retrospectively registered, http://www.chictr.org.cn/edit.aspx?pid=51309andhtm=4.Keywords: bandage contact lens, recurrent corneal erosion syndrome, deproteinized calf blood extract eye gel

This study aimed to identify the location and depth of the center of intramuscular nerves dense regions (CINDRs) in anterior brachial muscles. Twelve adult cadavers were used. One side anterior brachial muscles were isolated and subjected to Sihler's staining to show intramuscular nerve dense regions. Then the data was used to localize CINDRs in situ on the same muscles of the contralateral side. The localization method involved dissection and exposure of CINDRs, barium sulfate labeling, body surface reference line design, spiral computed tomography scan, three-dimensional image reconstruction, and Syngo system measurements. The number of CINDRs in coracobrachialis, biceps brachii and brachialis muscle were 3, 2 and 2, respectively. The body surface coordinates for the three CINDRs in coracobrachialis muscle were at 24.22%, 18.89% and 8.15% on the horizontal reference line and 21.37%, 31.78% and 30.07% on the longitudinal reference line. For biceps brachii muscle, they were at 49.68% and 40.28% on the horizontal reference line and 56.60% and 67.63% on the longitudinal reference line. For brachialis muscle, they were at 48.34% and 52.45% on the horizontal reference line and 71.30% and 81.62% on the longitudinal reference line. On cross-sectional planes, the depths of these CINDRs were at 22.81%, 26.76% and 27.99% (coracobrachialis); 14.79% and 17.45% (biceps); 34.03% and 30.26% (brachialis) of section diameters through CINDRs. These results may help to guide the injection of botulinum toxin A for the treatment of spasticity in the anterior brachial muscles and improve treatment efficacy and efficiency.

Due to its excellent hardware performance and elegant design,the lightweight block cipher PRESENT attracts widely attention from both industry and academy society.In this paper,we present a new Biclique cryptanalysis on 21-round PRESENT,which can recover secret key with 278.9 time complexity and 264 chosen ciphertexts.Moreover,our Biclique attack can be extended to PRESENT-128 and the compression function of DM-PRESENT with the same rounds.Compared with the published results,our new Biclique analysis has the advantage on its memory complexity.

A preliminary organic geochemical study shows that the sulphide ores from the hydrothermal deposit of the Okinawa Trough are generally low in the total organic carbon and extremely low in the soluble organic matter. In the aliphatic hydrocarbon fraction, the n-alkanes range from C15 to C35, with usual maxima in the middle n-C20 region and strong odd-carbon number predominance when n > C25 (CPI = 1.2). The dominant analog in the aromatic fraction is phenanthrene, a polynuclear aromatic hydrocarbon, which provides evidence for hydrothermal activity. The organic matter derived mainly from marine planktonic and terrigenous vascular plants is entrapped in a high-temperature regime such as an active chimney and cooled quickly in the sulphide ores on the seafloor. Organic matter and sulphides are definitely products of a high-temperature alteration. The biomarker compounds indicate that the ores are formed under low Eh and pH conditions—a reducing to anoxic environment, which is favourable for sulphates to be reduced into sulphides by biogenic (bacterial) or abiogenic activity.

A long-term sensor for molten copper was developed by using MgO-PSZ electrolyte tube. The reference electrode was presintered to avoid the appearance of a gap between the tube and reference due to the shrinkage of reference electrode powder at working temperature. Liquid sealing technique could be employed to improve the sensor long-term stability. The sensor obtained is highly sensitive, simple in structure, easy to handle and low cost.

The ore deposit is dominated by Pb-Sb sulphosalt minerals accompanied by various Sb, Bi sulphosalt minerals of Pb, Ag, Cu, and Sn. The 22 species of sulphosalt minerals and the 9 species of rare sulphides associated with them, as well as the natural elements, have been identified in this paper. Of them, the 23 species including 17 species of sulphosalt minerals and other associated minerals were discovered for the first time in the Dachang ore field. Based on the paragenesis of the minerals, different types of sulphosalt minerals assemblages have been preliminarily determined. Based on the temporal and spatial evolutionary relationship of the mineral assemblages and the ore-forming element assemblages, the zoning pattern of the deposit has been worked out. It exhibited normal characters at the early stage and reverse zoning at the late stage. The sulphosalt minerals were all formed in the late stage and the difference in their species and their paragenesis is a qualitative indicator of the difference in the concentration of the components in the ore-forming fluids.

The Dachang ore belt is associated with the Yenshanian epizonal granite in the Zhuang Autonomous Region of Guangxi, and is one of the most important cassiter-ite-sulphide polymetallic ore belts of China. The relatively complete investigations of the geological features, various ore-controlling factors, and main metallogenic features are described. In addition, a summary of the investigations on the metallogenic patterns and model of the Changpo-Tongkeng ore deposit, and a preliminary discussion on the genesis of the ore deposits are also made.