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Clinical features,diagnosis,and treatment of Peutz-Jeghers syndrome:Experience with 566 Chinese cases

World Journal of Gastroenterology 2023年第10期29卷 1627-1637页

作者： zu-Xin xu Li-Xin Jiang Yu-Rui Chen Yu-Hui Zhang Zhi Zhang Peng-Fei Yu Zhi-Wei dong Hai-Rui Yang Guo-Li Gu Fifth Clinical College of Anhui Medical University Air Force Clinical College of Anhui Medical UniversityBeijing 100142China Air Force Clinical College of China Medical University Beijing 100142China Department of General Surgery Air Force Medical CenterChinese People's Liberation ArmyBeijing 100142China

BACKGROUND Peutz-Jeghers syndrome(PJS)is a clinically rare disease with pigmented spots on the lips and mucous membranes and extremities,scattered gastrointestinal polyps,and susceptibility to tumors as clinical *** preventive and curative methods are still *** we summarize our experience with 566 Chinese patients with PJS from a Chinese medical center with regard to the clinical features,diagnosis,and *** To explore the clinical features,diagnosis,and treatment of PJS in a Chinese medical *** The diagnosis and treatment information of 566 cases of PJS admitted to the Air Force Medical Center from January 1994 to October 2022 was summarized.A clinical database was established covering age,gender,ethnicity,family history,age at first treatment,time and sequence of appearance of mucocutaneous pigmentation,polyp distribution,quantity,and diameter,frequency of hospitalization,fre-quency of surgical operations,*** clinical data was retrospectively analyzed using SPSS 26.0 software,with P<0.05 considered statistically *** Of all the patients included,55.3%were male and 44.7%were *** time to the appearance of mucocutaneous pigmentation was 2 years,and median time from the appearance of mucocutaneous pigmentation to the occurrence of abdominal symptoms was 10 *** vast majority(92.2%)of patients underwent small bowel endoscopy and treatment,with 2.3%having serious *** was a statistically significant difference in the number of enteroscopies between patients with and without canceration(P=0.004,Z=-2.882);71.2%of patients underwent surgical operation,75.6%of patients underwent surgical operation before the age of 35 years,and there was a statistically significant difference in the frequency of surgical operations between patients with and without cancer(P=0.000,Z=-5.127).At 40 years of age,the cumulative risk of intussusception in PJS was approximately 72.0%,and at 50 years,t

关键词： Peutz-Jeghers syndrome Management Intussusception Canceration STK11

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The Research of QoS Guarantee Mechanism of the Secondary Users in Cognitive Radio Networks

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China Communications 2016年第10期13卷 146-152页

作者： Wanshu Yang Yunxiao zu School of Electronic Engineering Beijing University of Posts and Telecommunications

Cognitive radio(CR) is a promising solution to improve the spectrum *** cognitive radio networks includes the primary user(PU) system with authorized spectrum and the secondly user(SU) system without authorized spectrum. When the SUs want to use the spectrum, they have to find the idle channels that are not occupied by the PUs. So the QoS of the SUs will be affected not only by the characteristic of their own business, but also by the behavior of the ***, in order to ensure the quality of the SU services, the M-LDWF algorithm is widely used in scheduling. However, the M-LWDF algorithm didn't fully consider the difference among the SUs. For those SUs who are in the process of communication but have to change channel due to the return of the PU, they should have higher scheduling priority. In this paper, we put forward an improved algorithm based on M-LWDF. In order to guarantee the QoS of the SUs those were in the processing of communication, we gave the higher scheduling priority. Simulation results show that the improved algorithm can effectively decrease the dropping rate and improve the QoS of the SUs and the performance of the whole system.

关键词： TDMA scheme asynchronous myopic repeated game coloring quality classical centralized algorithms

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A New Expression of the Fractional Fourier Transformation

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Communications in Theoretical Physics 2001年第10期36卷 399-400页

作者： YU zu-Rong Department of Applied Physics Shanghai Jiao Tong University Shanghai 200030 China

With the help of su(2) algebra technique, a new equivalent form of the fractional Fourier transformation is given. Two examples are illustrated for their physical application in quantum optics.

关键词： su(2) algebra, the fractional Fourier transformation, squeezed state, Wigner operator

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In-Situ Control of Oxygen Fugacity in Water-Free Systems at High Temperature and High Pressure

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Chinese Physics Letters 1998年第3期15卷 162-164页

作者： LI He-ping XIE Hong-sen GUO Jie ZHANG Yue-ming xu zu-ming xu Ji-an Material Laboratory of the Earths Interior Institute of GeochemistryChinese Academy of SciencesGuiyang 550002 Institute of Geosciences Academia SinicaTaipei

By using two oxygen specific electrolyte discs and applying a dc voltage between the sample and an oxygen buffer,oxygen can be driven into or pumped from the sample at a fixed temperature and *** measuring the voltage between the sample and a reference buffer,the oxygen fugacity in the sample is simultaneously ***,the oxygen fugacity in the sample at high temperature and high pressure can be in situ controlled independently of temperature and pressure.

关键词： pumped Oxygen applying

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Descriptions of Leptomastidea angulipennis sp. nov. and two known species of Leptomastidea(Hymenoptera:Encyrtidae),with a key to Chinese species

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Journal of Forestry Research 2017年第1期28卷 189-194页

作者： Guohao zu Chengde Li School of Forestry Northeast Forestry University College of Horticulture and Landscape Tianjin Agricultural University

Leptomastidea angulipennis sp. nov. is described as new to science from Yunnan, China, It can be easily separated from all the other species of the genus by the triangular shape and infuscate pattern of the forewing. Brief diagnoses and new distributional data of L. herbicola and L. rubra are also provided, and a key to the females of all the Chinese species is given.

关键词： Chalcidoidea Encyrtidae Leptomastidea Taxonomy New species

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Surface Ferrite Grain Refinement and Mechanical Properties of Low Carbon Steel Plates

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Journal of Iron and Steel Research International 2006年第4期13卷 35-39页

作者： FAN Jian-wen DAI Xiao-li XIE Rui-ping ZHANG Wei-xu WANG zu-bin Shougang Research Institute of Technology Shougang Group Corporation Beijing 100041 China Chinese Society for Metals Beijing 100011 China

Considering the specialities of the steel plate production, the TMCP study has been carried out with Gleeble 2000 tester to explore the possibility of fine grained ferrite in the low carbon steel plates with the chemical composition of C 0.13--0.18, Si 0.12-0.18, Mn 0.50-0. 65, P 0. 010-0. 025, and S 0. 005-0. 028. The plates with thickness of 8. 7 mm in which the ferrite grain size is smaller than 8μm have been produced by special de- formation process in the laboratory. Furthermore, the trial production of special plain carbon steel plates of 16-25 mm in thickness and 2 000- 2 800 mm in width with fine grained ferrite has been successfully carried out in the Shougang Steel Plate Rolling Plant. The ferrite grain size is 5.5-7μm in the surface layers and 9.5-15μm in the central layer respectively. The yield strength is 320- 360 MPa, tensile strength is 440-520 MPa and the elongation is 25%- 34 %. It is very important for the rolling plants to improve the low carbon steel plates＇ mechanical properties. The results show that the ferrite grains in the surface layer can be refined effectively by the appropriate rolling process, and the strength can be also increased.

关键词： TMCP fine grained ferrite plain low carbon steel plate mechanical property

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Self-Attention Spatio-Temporal Deep Collaborative Network for Robust FDIA Detection in Smart Grids

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Computer Modeling in Engineering & Sciences 2024年第11期141卷 1395-1417页

作者： Tong zu Fengyong Li College of Computer Science and Technology Shanghai University of Electric PowerShanghai201306China

False data injection attack(FDIA)can affect the state estimation of the power grid by tampering with the measured value of the power grid data,and then destroying the stable operation of the smart *** work usually trains a detection model by fusing the data-driven features from diverse power data ***-driven features,however,cannot effectively capture the differences between noisy data and attack *** a result,slight noise disturbances in the power grid may cause a large number of false detections for FDIA *** address this problem,this paper designs a deep collaborative self-attention network to achieve robust FDIA detection,in which the spatio-temporal features of cascaded FDIA attacks are fully ***,a high-order Chebyshev polynomials-based graph convolution module is designed to effectively aggregate the spatio information between grid nodes,and the spatial self-attention mechanism is involved to dynamically assign attention weights to each node,which guides the network to pay more attention to the node information that is conducive to FDIA ***,the bi-directional Long Short-Term Memory(LSTM)network is introduced to conduct time series modeling and long-term dependence analysis for power grid data and utilizes the temporal self-attention mechanism to describe the time correlation of data and assign different weights to different time *** designed deep collaborative network can effectively mine subtle perturbations from spatiotemporal feature information,efficiently distinguish power grid noise from FDIA attacks,and adapt to diverse attack *** experiments demonstrate that our method can obtain an efficient detection performance over actual load data from New York Independent System Operator(NYISO)in IEEE 14,IEEE 39,and IEEE 118 bus systems,and outperforms state-of-the-art FDIA detection schemes in terms of detection accuracy and robustness.

关键词： False data injection attacks smart grid deep learning self-attention mechanism spatio-temporal fusion

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One new species and one new record species of Acerophagus(Hymenoptera: Encyrtidae) from China with a key to Chinese species

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Journal of Forestry Research 2017年第4期28卷 849-854页

作者： Guohao zu Chengde Li School of Forestry Northeast Forestry UniversityHarbin 150040HeilongjiangPeople’s Republic of China

Two species of Acerophagus from Yunnan Province, China, are reported. One species, A. ovaliclavus sp. nov., is described as new to science, and one species, A. solidus Hayat is reported as new to China. A key to all described species from China based on females is given. All the type materials are deposited in the insect collections of Northeast Forestry University, China.

关键词： Acerophagus Chalcidoidea Encyrtidae New species Taxonomy

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The fecal shield is a double-edged sword for larvae of a leaf beetle

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Current Zoology 2023年第2期69卷 173-180页

作者： Zheng-Zhong Huang Ze-Qun dong zu-Long Liang Bin Zhang Huai-Jun xue Si-Qin Ge Institute of Zoology Chinese Academy of SciencesBeijing 100101China College of Life Sciences The Key Laboratory of Zoological Systematics and Application of Hebei ProvinceHebei UniversityBaoding 071002China College of Life Science Institute of Life Science and Green DevelopmentHebei UniversityBaoding 071002China College of Life Sciences Nankai UniversityTianin 300071China

Larvae of some leaf beetles carry masses of feces covering parts or all of the body,which is called a"fecal shield'In general,the shield is thought to be a defense structure against natural ***,some studies have suggested that defense effectiveness varies depending on the natural *** this study,we used a fecal retention leaf beetle Ophrida xanthospilota(Coleoptera:Chrysomelidae),and 2 local generalist predators(an ant,Camponotus japonicus(Hymenoptera:Formicidae)and a stinkbug,Arma custos(Hemiptera:Pentatomidael)as a system to test the hypothesis that the fecal shield of *** plays different roles in predation behavior of different predators and can provide multiple chemical communication signals in predator-prey *** bioassays showed that the fecal shield of *** larvae repelled the ant *** while attracting the stinkbug *** results also strongly demonstrated that hexane extracts of the fecal shield significantly repelled ***,while dichloromethane(DCM)extracts did not inhibit ant ***,DCM extracts attracted ***,but hexane extracts did ***,we suggest that the fecal shield is a double-edged sword for the larvae of *** results also indicated that the risk-benefit tradeoff of an insect should be estimated at a community level involving multiple enemies(predators and parasites)and herbivores,rather than in a single prey-predator pair.

关键词： ant chemical cues kairomone predatory stinkbug predator-prey interactions

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Optimal control approach to stability criteria on Hill's equations

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Applied Mathematics(A Journal of Chinese Universities) 2018年第3期33卷 253-273页

作者： zu Jian LI Yong School of Mathematics and Statistics & Center for Mathematics and Interdisciplinary Sciences North-east Normal University Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University College of Mathematics Jilin University

This paper gives a tutorial on how to prove Lyapunov type criteria by optimal control methods. Firstly, we consider stability criteria on Hill’s equations with nonnegative potential. By optimal control methods developed in 1990s, we obtain several stability criteria including Lyapunov’s criterion, Neǐgauz and Lidskiǐ’s criterion. Secondly, we present stability criteria on Hill’s equations with sign-changing potential in which Brog’s criterion and Krein’s criterion are included.

关键词： stability criteria optimal control method Hill's equation Lyapunov inequality

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