Anhui Provincial Research Articles

Configuration Interaction of Electronic Structure and Spectroscopy of AlH and Its Cation * *Supported by the National Natural Science Foundation of China (Grant No. 11604052), the Fundamental Research Funds in Heilongjiang Province Universities, China (Grant No.135109223), the Natural Science Research Project of the Education Department of Anhui Province, China (Grant No. KJ2020A0544), the Anhui Provincial Natural Science Foundation, China (Grant

We carry out a detailed study of the low-lying states of AlH and AlH+, using a multireference configuration interaction method. Based on the computed potential energy curves, the spectroscopic constants of bound Λ–S states are fitted; these agree with the results for the measurements. The values of the permanent dipole moment of the Λ–S states are calculated, and the charge transfer mechanism is discussed. Based on the calculated transition dipole moments and vibrational levels, the radiative lifetimes of bound states are determined. Finally, tunneling lifetimes, and ν′ = 0–2 vibrational levels of 42 Σ + and 32 Π states with a potential barrier are investigated.

The attention networks in benign epilepsy with centrotemporal spikes: A long-term follow-up study

PurposeTo evaluate the long-term prognosis of attention deficit in children with newly diagnosed benign childhood epilepsy with centrotemporal spikes (BECTS). MethodsAttention network test (ANT) was performed over a period of 7 years on 42 patients who were newly diagnosed with BECTS, in the Department of Neurology of Anhui Provincial Children's Hospital. ResultsIn the patients’ group, the accuracy of ANT was lower (P = 0.000), the total response time was longer (P = 0.000), and the efficiency of orienting (P = 0.000) and alerting (P = 0.041) networks was lower than that of the control group. Accuracy was positively correlated with age of onset (b = 1.184) and negatively correlated with number of seizures (b = −1.321). After 7 years, there was no significant difference in the accuracy (P = 0.385); total response time (P = 0.661); and alerting (P = 0.797), orienting (P = 0.709), and executive control (P = 0.806) network efficiencies between the patients and controls. Accuracy was positively correlated with age of onset (b = 0.8583) and negatively correlated with number of seizures (b = −1.017) and duration of antiepileptic drugs therapy (b = −3.203). ConclusionsIn our study, the newly diagnosed BECTS patients had impaired attention network, mainly in the alerting and orienting domains. Age of onset, number of seizures, and time of antiepileptic treatment may affect the attention networks. With the remission of BECTS, the attention network dysfunction was reversed.

Laparoscopic approach for intermittent hydronephrosis caused by primary ureteral fibroepithelial polyps in children

ObjectiveTo summarize the diagnosis and treatment experience of children with intermittent hydronephrosis caused by ureteral fibroepithelial polyp (UFP).MethodsFrom 2017 to 2020, cases of hydronephrosis caused by ureteral polyp in Anhui...

Predictive value of ACEF score for clinical prognosis of elderly patients with ST-segment elevation myocardial infarction after percutaneous coronary intervention.

To investigate the predictive value of the age, creatinine, and ejection fraction (ACEF) score for cardiac death in patients aged ≥75 years diagnosed with acute ST-segment elevation myocardial infarction (STEMI) at 1 month and 1 year after emergency percutaneous coronary intervention (PCI). A total of 360 patients with STEMI undergoing emergency PCI in the Department of Cardiology of Anhui Provincial Hospital from January 2013 to April 2018 were consecutively recruited. The primary endpoint event was cardiac death at postoperative 1 month and 1 year. The ROC curve was utilized to evaluate ACEF scoring system and predict cardiac death rate. According to ACEF score upon admission, 360 patients were divided into low-to-intermediate risk group (n=80) with ACEF score of 0.99-1.27 (1.18±0.07) and high-risk group (n=280) with ACEF score of 1.28-4.14 (1.83±0.51). The age, left ventricular ejection fraction (LVEF), estimated glomerular filtration rate (eGFR), heart rate and the proportion of complete revascularization in the high-risk group were significantly higher than those in low-to-intermediate risk group (all P<0.05). The area under ROC curve for ACEF scoring system to predict cardiac death at 1 month and 1 year following PCI was 0.809 and 0.763, respectively. ACEF value upon admission can predict the cardiac death rate at 1 month and 1 year after emergency PCI in STEMI patients aged ≥75 years old.

Association between cold spells and childhood asthma in Hefei, an analysis based on different definitions and characteristics

BackgroundAs the global climate continues to warm, there is an increased focus on heat, but the role of low temperatures on health has been overlooked, especially for developing countries. Methods We collected the admission data of childhood asthma in 2013–2016 from Anhui Provincial Children's Hospital, as well as meteorological data from the Meteorological Bureau for the study period and collected data of pollutants from 10 monitoring stations around Hefei city. Poisson's generalized additive model (GAM) combined with a distributed lag non-linear model (DLNM) was used to estimate the short-term effects of cold spell on childhood asthma in cold seasons (November to March). 16 definitions of cold spells were clearly compared, which combining 4 temperature indexes (daily minimum and mean temperature; daily minimum and mean apparent temperature), 2 temperature thresholds (2.5th and 5th) and 3 durations of at least 2–4 days. We then have an analysis of the modifying effect of characteristics of cold spells and individuals(gender and age), with a view to discovering the susceptible population to cold spell. Results There was significant association between cold spells and admission risk for childhood asthma. And the definition, in which daily minimum apparent temperature falls below 5th percentile for at least 3 consecutive days, produced the optimum model fit performance. Based on this optimal fit we found that, for the total population, the effect of cold spell lasted approximately five days (lag1-lag5), with the largest effect occurring in lag 3 (RR = 1.110; 95% CI: 1.052–1.170). In subgroup analysis, the cumulative effect of lag0-7 was higher in males and school-age children than in females and other age groups, respectively. In addition, we found that the effect of is higher as the duration increases. Conclusion This study suggests an association between cold spell and childhood asthma, and minimum AT may be a better indicator to define the cold spells. Boys and school-age children are more vulnerable to cold spell. And one of our very interesting findings is that if a cold spell lasts for several days, the impact of the cold spell on those later days is likely to be greater than that of the previous days. In conclusion, we should pay more attention to the protection of boys and school-aged children in our future public health protection and give more attention to those cold spells that last longer. Therefore, we recommend that schools and health authorities need to take targeted measures to reduce the risk of asthma in children during the cold spell.

The Images of the Merits of Shi and Hu Families: Between Popular Prints and Genealogies. Narratives of Loyalty to the Song Empire and the Edifying Practices of Huizhou Lineages in the Ming–Qing Dynasties

The Images of the Merits (Baogong tu 報功圖) of the Shi 石 and Hu 胡 families, from southern Anhui and northeastern Jiangsu, are held in Anhui Provincial Museum (in Hefei) and Shanghai Museum respectively. Exceptional in size and printing techniques, these prints are equally special because of their content, which includes the history of the two families, with a focus on the period of the founding of the Song dynasty (960–1276), where family, local, and “national” narratives combine in a composite, yet unique and continuous visual representation. This study describes the documents, narrates the events depicted, and questions the dating, nature, and use of the Baogong tu prints. The aim of this article is to analyze what the prints tell us, not only about the events depicted, but also about the rural world in which they were created, a world where the prominence of the lineages was particularly pronounced in the late imperial period.

64 SIN3 transcription regulator family member A regulates porcine early embryonic development by modulating CCNB1 expression

SIN3 transcription regulator family member A (SIN3A) is the central scaffold protein of the SIN3/HDAC (histone deacetylase) transcriptional repressor complex. We previously found that SIN3A participates in the mouse pre-implantation development by finetuning HDAC1 expression. However, it remains unresolved whether this functional significance of SIN3A is conserved in other mammals. The objective of this work was thus to characterise the expression profiles and the functional role of SIN3A in pre-implantation development using non-rodent animal models. RNA sequencing results show that a large amount of SIN3A mRNA is present in oocytes and early embryos before embryonic genome activation and a low amount thereafter, suggesting a maternal origin of SIN3A in all species examined. Interestingly, immunofluorescence data show that SIN3A protein level peaks at the 4-cell stage in pigs compared with the morula stage in cattle, suggesting a differential role of SIN3A among species. To explore the function of SIN3A in early embryonic development, we used a short interfering (si)RNA-mediated knockdown approach in porcine parthenogenetic activated (PA) embryos. Immunocytochemical analysis showed that SIN3A levels were diminished ∼80% compared with nonspecific siRNA (NC) injected control (n=3). To monitor the developmental potential of embryo depleted of SIN3A, we injected SIN3A-siRNA into MII stage oocytes, followed by parthenogenetic activation, and percent cleavage and blastocyst formation were recorded. We found that SIN3A knockdown (KD) did not affect the cleavage rate (NC vs. KD, 83.63±3.63% vs. 80.08±4.66%, n=5), but significantly reduced blastocyst rate compared with the NC group (NC vs. KD, 36.64±4.28% vs. 6.33±3.12%, n=5). Specifically, SIN3A depletion in early embryos causes developmental arrest at 2-cell stage in pigs but does not affect early embryonic development in bovines. In contrast with mouse data, SIN3A depletion results in only a slight decrease and even no difference in HDAC1 expression in porcine and bovine early embryos, respectively. In addition, HDAC1 knockdown does not cause 2-cell block but leads to a reduced blastocyst rate, suggesting that the effect of SIN3A depletion on porcine early embryos is independent of HDAC1. RNA-Seq analysis was used to compare the global transcript content between NC and KD 2-cell embryos. A total of 23 genes (14 upregulated and 9 downregulated) had undergone significant changes. Interestingly, cyclin B1 (CCNB1) ranked second among downregulated genes. To test whether knockdown of CCNB1 would display a similar phenotype in porcine early embryos, we injected CCNB1-siRNA into pronuclear stage. CCNB1 KD resulted in a similar phenotype as SIN3A depletion. Injection of exogenous CCNB1 mRNA into SIN3A-depleted embryos could partly rescue embryonic development. In conclusion, our results indicate SIN3A plays an essential role in porcine early embryonic development, probably involving the regulation of CCNB1 expression. This work was funded by National Natural Science Foundation of China, the Anhui Provincial Natural Science Foundation and China Postdoctoral Science Foundation.

Efficacy and safety of domestic and imported gefitinib in patients with advanced non-small cell lung cancer.

Gefitinib is a first-generation epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI). It was approved by the U.S. Food and Drug Administration (FDA) for clinical use in 2003. However, gefitinib has only come to China in recent years. Previous studies have not compared the efficacy and safety of domestic and imported gefitinib. Therefore, we conducted this study. This study included 227 patients with advanced non-small cell lung cancer (NSCLC) who received gefitinib treatment in four medical institutions: The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Anhui Provincial Cancer Hospital, Fudan University Shanghai Cancer Center, Shandong Provincial Institute of Cancer Prevention and Jiangsu Cancer Hospital, from January 2017 to July 2018. The patients were divided into a Yiruike group (55 patients treated with domestic gefitinib, Yiruike) and an Iressa group (172 patients treated with imported gefitinib, Iressa). Because gefitinib resistance usually occurs within 8-10 months of gefitinib administration, the patients were followed up for one year to observe their conditions and compare the occurrence of adverse reactions between the two groups. The two groups had no significant difference in baseline data. The median progression-free survival (PFS) of Yiruike group and that of Iressa group were 10.270±2.036 and 12.970±1.634 months, respectively. The mean PFS of Yiruike group and that of Iressa group were 12.598±1.083 and 15.958±0.987 months, respectively. The one-year disease control rate (DCR) of Yiruike group and that of Iressa group were 61.8% and 59.3%, respectively. The differences were all insignificant (P>0.05). The incidence of adverse reactions in these two groups were not significantly different. Yiruike was slightly superior to Iressa in terms of DCR. However, comparisons of bioequivalence and DCR were not sufficient for evaluating a drug. Other comparisons require long-term follow-up studies with a large sample size.

Mutual Restriction between Concurrence and Intrinsic Concurrence for Arbitrary Two-Qubit StatesSupported by the National Science Foundation of China (Grant Nos. 12075001, 61601002 and 11575001), the Anhui Provincial Natural Science Foundation (Grant No. 1508085QF139), and the Fund from CAS Key Laboratory of Quantum Information (Grant No. KQI201701).

Concurrence is viewed as the most commonly approach for quantifying entanglement of two-qubit states, while intrinsic concurrence contains concurrence of four pure states consisting of a special pure state ensemble concerning an arbitrary two-qubit state. Thus, a natural question arises: Whether there is a specified relation between them. We firstly examine the relation between concurrence and intrinsic concurrence for the maximally nonlocal mixed state under a special unitary operation, which is not yet rigorously proved. In order to obtain a general result, we investigate the relation between concurrence and intrinsic concurrence using randomly generated two-qubit states, and derive an inequality relation between them. Finally, we take into account the relation between concurrence and intrinsic concurrence in open systems, and reveal the ratio of the two quantum resources, which is only correlated with the experiencing channels.

Butterfly-Like Anisotropic Magnetoresistance and Angle-Dependent Berry Phase in a Type-II Weyl Semimetal WP2Supported by the National Natural Science Foundation of China (Grant Nos. 11974324, 11804326, U1832151, and 11674296), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDC07010000), the National Key Research and Development Program of China (Grant No. 2017YFA0403600), the Anhui Initiative in Quantum Information Technologies

The Weyl semimetal has emerged as a new topologically nontrivial phase of matter, hosting low-energy excitations of massless Weyl fermions. Here, we present a comprehensive study of a type-II Weyl semimetal WP2. Transport studies show a butterfly-like magnetoresistance at low temperature, reflecting the anisotropy of the electron Fermi surfaces. This four-lobed feature gradually evolves into a two-lobed variant with an increase in temperature, mainly due to the reduced relative contribution of electron Fermi surfaces compared to hole Fermi surfaces for magnetoresistance. Moreover, an angle-dependent Berry phase is also discovered, based on quantum oscillations, which is ascribed to the effective manipulation of extremal Fermi orbits by the magnetic field to feel nearby topological singularities in the momentum space. The revealed topological character and anisotropic Fermi surfaces of the WP2 substantially enrich the physical properties of Weyl semimetals, and show great promises in terms of potential topological electronic and Fermitronic device applications.

Tocilizumab Ameliorates the Hypoxia in COVID-19 Moderate Patients with Bilateral Pulmonary Lesions: A Randomized, Controlled, Open-Label, Multicenter Trial

Background: Tocilizumab is reported to be able to attenuate the cytokine storm in COVID-19 patients. We tried to ascertain the effectiveness and safety of tocilizumab in COVID-19 and identify patients most likely to be benefit from the treatment. Methods: This was a randomized, controlled, open-label, multicenter trial at 6 hospitals in Anhui and Hubei. Patients were randomly assigned in a 1:1 ratio to receive either tocilizumab in addition to standard care, or standard care alone. The first dose of tocilizumab was 400 mg, diluted in 100 ml 0.9% saline, and intravenous dripped in more than 1 h. A second dose was given if a patient remained febrile for 24 hours after the first dose. The primary endpoint was the cure rate. Primary analysis was done in the intention -to -treat (ITT) population and safety analysis was done in all patients who started their assigned treatment. Findings: Between Feb 13, 2020, and March 13, 2020, 65 patients were enrolled and randomly assigned to a treatment group (33 to tocilizumab and 32 to the controls). One patient in the control group, who aggravated severely 3 days after randomization, was transferred to the tocilizumab group. The cure rate in tocilizumab group was higher than that in the controls but not significant (94.12% vs 87.10%, P=0.4133). Adverse events were recorded in 20 (58.82%) of 34 tocilizumab recipients versus 4 (12.90%) of 31 in the controls. No serious adverse events were reported in tocilizumab group. Interpretation: Tocilizumab treatment did not increase the cure rate of COVID-19. A large scale of study enrolling more patients is needed. However，tocilizumab can improve oxygenation without significant influence on the time virus load tunes negative. For patients with bilateral pulmonary lesions and elevated IL-6 levels, tocilizumab should be recommended for better disease management. Trial Registration: This trial was registered in Chinese Clinical Trial Registry (Number: ChiCTR2000029765). Funding: This work was supported by Department of Science and Technology of Anhui Province and Health Commission of Anhui Province (grant number: 202004a07020001) and the China National Center for Biotechnology Development (grant number: 2020YFC0843800). Declaration of Interests: The authors declare no competing interests. Ethics Approval Statement: The study protocol was approved by the Medical Research Ethics Committee of Anhui Provincial Hospital, the First Affiliated Hospital of USTC [approval no. 2020-XG (H)-015]. The authors committed to protect the patient’s privacy and comply with the Helsinki Declaration.

The Research on the Evaluation and Optimization of the Traditional Dwelling Conservation Practice: A Case Study of Cheng Zhi Hall Restoration Project within Hongcun

Hongcun is the World Cultural Heritage which is a Traditional Village in China, and Cheng Zhi Hall is the most important traditional dwelling within Hongcun. In December 2010, Yi County Cultural Relics Bureau commissioned Anhui Provincial Cultural Relics Protection Center to complete the Restoration Plan of Cheng Zhi Hall, Hongcun Village, Yi County, Huangshan City, Anhui Province, and carried out the actual restoration project from 2015 to 2018. However, by the evaluation of the restoration plan and project of Cheng Zhi Hall, many problems are found such as that the description of restoration measures is rough, the restoration drawings are not clearly marked, and the restoration practices are lack of the theoretical support and so on. Therefore, the aim of this research is to sort out the existing problems, and through the comparative study of the relevant Italian cases, putting forward the optimization strategies of the plan and practice of traditional dwelling conservation practice in China.

Calculation of radiative heat flux on irregular boundaries in participating media* *Project supported by the Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology, the Anhui Provincial Natural Science Foundation, China (Grant No. 2008085ME151), and the National Natural Science Foundation of China (Grant Nos. 51976057 and 51827808).

Radiative heat flux at wall boundaries is important for its thermal design. Numerical methods based on structured grids are becoming trendy due to their simplicity and efficiency. Existing radiative transfer equation solvers produce oscillating radiative heat flux at the irregular boundary if they are based on structured grids. Reverse Monte Carlo method and analytical discrete ordinates method are adopted to calculate the radiative heat flux at complex boundaries. The results show that the reverse Monte Carlo method can generate a smooth radiative heat flux profile and it is smoother with larger energy bundles. The results from the analytical discrete ordinates method show that the fluctuations are due to the ray effect. For the total or the mean radiative heat flux, the results from the analytical discrete ordinates method are very close to those from the reverse Monte Carlo method.

Running vacuum model in a non-flat universe * * Supported in part by National Center for Theoretical Sciences, MoST (MoST-107-2119-M-007-013-MY3), National Natural Science Foundation of China (11505004, 11447104) and the Anhui Provincial Natural Science Foundation of China (1508085QA17)

We investigate observational constraints on the running vacuum model (RVM) of in a spatially curved universe, where is the model parameter, corresponds to the spatial curvature constant, represents the scalar factor, and is a constant defined by the boundary conditions. We study the CMB power spectra with several sets of and in the RVM. By fitting the cosmological data, we find that the best fitted value for RVM is slightly smaller than that of CDM in the non-flat universe, along with the constraints of (68% C.L.) and (95% C.L.). In particular, our results favor the open universe in both CDM and RVM. In addition, we show that the cosmological constraints of (RVM) and ( CDM) at 95% C.L. for the neutrino mass sum are relaxed in both models in the spatially curved universe.

Room temperature nonlinear mass sensing based on a hybrid spin-nanoresonator system**Project supported by the National Natural Science Foundation of China (Grant Nos. 11647001 and 11804004) and Anhui Provincial Natural Science Foundation (Grant No. 1708085QA11).

We present a room temperature nonlinear mass sensing based on a hybrid spin-nanoresonator system with the microwave pump–probe technique and the spin readout technique, which includes a single spin of nitrogen–vacancy (NV) center in diamond and a nanomechanical cantilever. The resonance frequency of the nanoresonator can be measured with the nolinear Kerr spectrum, and the parameters that influence the nolinear Kerr spectrum are also investigated. Further, according to the relationship between frequency shifts and variable mass attached on the nanoresonator, this system can also be used to detect the mass of DNA molecules with the nolinear Kerr spectrum. Benefiting from the single spin of the NV center in diamond has a long coherence time at 300 K, the hybrid system can realize room temperature mass sensor, and the mass response rate can reach 2600 zg/Hz.

Epidemiological characteristics of pulmonary tuberculosis in Anhui Province, Eastern China from 2013 to 2018.

ObjectivePulmonary tuberculosis (TB) is a severe infectious respiratory disease, the burden of which remains high in China. To provide scientific evidence for developing more targeted prevention and control strategies, this study aimed to determine the incidence trends and explore the epidemiological characteristics of pulmonary TB in Anhui Province, Eastern China between 2013 and 2018.MethodsThe retrospective study analyzed information regarding pulmonary TB cases reported by the National Infectious Disease Reporting System and census data collected from the Anhui Provincial Bureau of Statistics.ResultsOverall, 211,892 cases of TB patients were reported in Anhui Province, China between 2013 and 2018, with an average annual reported incidence rate of 57.7 per 100,000 persons. A significant decrease in the incidence rate of pulmonary TB (p < 0.001) was observed during the study period. Men had a higher incidence rate of pulmonary TB than women (p < 0.001). The highest annual average reported incidence rate was 204.2 per 100,000 persons in those aged 70–74 years. The number of farmers with pulmonary TB, i.e., 155,415, accounted for 73.4% of all cases. Moreover, the peak period of reported cases was from January to March. Four cities along the Yangtze River—Anqing, Tongling, Chizhou, and Wuhu—reported significantly higher incidence rates of pulmonary TB than other cities (p < 0.001).ConclusionsFrom 2013 to 2018, there was a significant decline in the incidence rate of pulmonary TB in Anhui Province, with peaks occurring from January to March. Prevention and control strategies targeting men, people aged 70–74 years, farmers, and the four cities along the Yangtze River should be strengthened.

Design of passive filters for time-delay neural networks with quantized output**Project supported by the Excellent Youth Talent Support Program of Universities in Anhui Province, China (Grant No. GXYQZD2019021), the Major Research Project of Anhui Provincial Department of Education, China (Grant No. KJ2017ZD05), and the National Natural Science Foundation of China (Grant Nos. 61503002 and 61973199).

Passive filtering of neural networks with time-invariant delay and quantized output is considered. A criterion on the passivity of a filtering error system is proposed by means of the Lyapunov–Krasovskii functional and the Bessel–Legendre inequality. Based on the criterion, a design approach for desired passive filters is developed in terms of the feasible solution of a set of linear matrix inequalities. Then, analyses and syntheses are extended to the time-variant delay situation using the reciprocally convex combination inequality. Finally, a numerical example with simulations is used to illustrate the applicability and reduced conservatism of the present passive filter design approaches.

Expression of mucin-4 in meningiomas and its diagnostic significance

Objective: To investigate the expression of mucin-4 (MUC4) in meningiomas. Methods: Totally 258 cases of meningiomas and 165 cases of other brain tumors were collected from the First Affiliated Hospital of China University of Science and Technology (Anhui Provincial Hospital) from 2011 to 2017. MUC4, EMA, PR, SSTR-2 protein expression was detected by immunohistochemistry, and their expression in meningiomas and other tumor tissue was compared. Results: The 258 patients with meningioma included 85 males and 173 females, with a mean age of 69 years. Among the meningiomas, 192, 54 and 12 were WHO grades Ⅰ, Ⅱ and Ⅲ respectively. The overall expression rate of MUC4 in meningiomas was 67.8% (175/258), including 46/46 (100.0%) in meningothelial meningiomas, 3/3 in secretory meningiomas, 44/45 (97.8%) in angiomatous meningiomas, 37/41 (90.2%) in atypical meningiomas, 3/4 in metaplastic meningiomas, 2/3 in microcystic meningiomas, 7/11 in psammomatous meningiomas, 7/11 in chordoid meningiomas, 14/28 (50.0%) in transitional meningiomas, 1/2 in clear cell meningiomas, 1/2 in papillary meningiomas, 4/9 in anaplastic meningiomas, 7/52 (13.5%) in fibrous meningiomas, and 0/1 in rhabdoid meningiomas. In addition, MUC4 was expressed in 44 EMA negative meningiomas and in four SSTR-2 negative meningiomas. PR, EMA, SSTR-2 were expressed in 149 cases (57.7%), 173 cases (67.1%), 235 cases (91.1%) of meningiomas, respectively. MUC4 was not expressed in other tumors in the central nervous system, including schwannomas, neurofibromas, solitary fibrous tumors/hemangiopericytoma (SFT/HPC), hemangioblastoma, gliomas and ependymomas. Conclusion: MUC4 is widely expressed in meningiomas and has great value in distinguishing meningiomas from other non-meningeal epithelial tumorsof the central nervous system.

Predictive Value of the Texture Analysis of Enhanced Computed Tomographic Images for Preoperative Pancreatic Carcinoma Differentiation.

PurposeTo assess the utility of texture analysis for predicting the pathological degree of differentiation of pancreatic carcinoma (PC).MethodsEighty-three patients with PC who went through postoperative pathology diagnose and CT examination were selected at Anhui Provincial Hospital. Among them, 34 cases were moderately differentiated, 13 cases were poorly differentiated, and 36 cases were moderately poorly differentiated. The images in the arterial and venous phase (VP) with the lesions at their largest cross section were selected to manually outline the region of interest (ROI) to delineate lesions using open-source software. A total of 396 features were extracted from the ROI using AK software. Spearman correlation analysis and random forest selection by filter (rfSBF) in the caret package of R studio were used to select the discriminating features. The receiver operating characteristic ROC analysis was used to evaluate their discriminative performance.ResultsTwelve and six features were selected in the arterial and VPs, respectively. The areas under the ROC curve (AUC) in the arterial phase (AP) for diagnosing poorly differentiated, moderately differentiated and moderate-poorly differentiated cases were 0.80, 1, and 0.80 in the training group and 0.77, 1, and 0.77 in the test group; in the VP, the values were 0.81, 1, and 0.82 in the training group and 0.74, 1, and 0.74 in the test group.ConclusionTexture analysis based on contrast-enhanced CT images can be used as an adjunct for the preoperative assessment of the pathological degrees of differentiation of PC.

Transverse Ward-Takahashi identities and full vertex functions in different representations of QED3 * * Supported in part by the National Natural Science Foundation of China (11475085, 11535005, 11690030), the National Major state Basic Research and Development (2016YFE0129300) and the Anhui Provincial Natural Science Foundation (1908085MA15)

We derive the transverse Ward-Takahashi identities (WTI) of N-dimensional quantum electrodynamics by means of the canonical quantization method and the path integration method, and subsequently attempt to prove that QED3 is solvable based on the transverse and longitudinal WTI, indicating that the full vector and tensor vertices functions can be expressed in terms of the fermion propagators in QED3. Further, we discuss the effect of different γ matrix representations on the full vertex function.