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夏玉米对花期高温逆境的响应与耐热性分析

玉米科学 2024年第5期32卷 40-49,59页

作者：张志方张守林徐国举王良发刘桂珍鹤壁市农业科学院河南鹤壁458030 河南省种业发展中心郑州450008

以浚单996(XD996)、郑单958(ZD958)、先玉335(XY335)为试验材料,采用温控试验,设自然温度(CK,29~32℃)、高温(HT,30、35、38、40℃)处理,研究花期不同程度高温对花粉活力和花丝活力的影响。采用高温胁迫试验,研究花期高温对受精结实、... 详细信息

以浚单996(XD996)、郑单958(ZD958)、先玉335(XY335)为试验材料,采用温控试验,设自然温度(CK,29~32℃)、高温(HT,30、35、38、40℃)处理,研究花期不同程度高温对花粉活力和花丝活力的影响。采用高温胁迫试验,研究花期高温对受精结实、果穗发育、产量及构成因素的影响。结果表明,随着温度升高,各品种高活力花粉呈降低趋势,低活力花粉呈先增后降趋势,无活力花粉呈增加趋势,花丝活力呈降低趋势。模型拟合分析结果表明,以50%为阈值,XD996、ZD958、XY335的花粉活力耐高温临界温度分别为37.0、35.4、33.2℃,花丝活力耐高温临界温度分别为37.4、35.6、33.7℃。高温处理条件下,XD996、ZD958、XY335的受精率分别较CK降低8.8%、12.9%、20.1%,结实率分别较CK降低9.9%、18.4%、36.4%,结实受精比分别较CK降低1.3%、6.2%、20.3%。耐热系数聚类分析结果表明,穗长、穗行数、行粒数、产量为主要耐热鉴定指标,穗粗、秃尖长、百粒重为次要耐热鉴定指标。

关键词：玉米花期高温逆境受精结实耐热系数

Neural network study of the nuclear ground-state spin distribution within a random interaction ensemble

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Nuclear Science and Techniques 2024年第3期35卷 216-227页

作者： Deng liu Alam Noor A zhen-zhen Qin Yang Lei School of Mathematics and Physics Southwest University of Science and TechnologyMianyang 621010China School of Nuclear Science and Technology Southwest University of Science and TechnologyMianyang 621010China

The distribution of the nuclear ground-state spin in a two-body random ensemble(TBRE)was studied using a general classification neural network(NN)model with two-body interaction matrix elements as input features and the corresponding ground-state spins as labels or output *** quantum many-body system problem exceeds the capability of our optimized NNs in terms of accurately predicting the ground-state spin of each sample within the ***,our NN model effectively captured the statistical properties of the ground-state spin because it learned the empirical regularity of the ground-state spin distribution in TBRE,as discovered by physicists.

关键词： Neural network Two-body random ensemble Spin distribution of nuclear ground state

Observations on the Curative Effect of Acupuncture and Moxibustion plus Systematic Desensitization on Anxiety Neurosis

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Journal of Acupuncture and Tuina Science 2003年第4期1卷 33-34页

作者： liu gui-zhen ZANG Yun-juan liu Ai-zhen WANG Si-you Qingdao medical college Shandong 266021 China Qingdao medical college Shandong 266021 China Qingdao medical college Shandong 266021 China

Purpose To investigate the clinical effect of a combined treatment on anxiety *** Eighty cases of anxiety neurosis were treated by acupuncture-moxibustion plus systematic desensitization. The result was compared with simple acupuncture-moxibustion or simple systematic *** and conclusion The cure rate was 52.5% in acupuncture-moxibustion plus systematic desensitization, which was significantly different from that in simple acupuncture-moxibustion or in simple systematic desensitization (P<0.05). Key Words Acupuncture-Moxibustion - Anxiety disorders - Psychotherapy Translator: WANG Si-you

关键词： Acupuncture-Moxibustion Anxiety disorders Psychotherapy

Polynomial-Time Key-Recovery Attacks Against NTRURe Encrypt from ASIACCS'15

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Journal of Systems Science & Complexity 2024年第3期37卷 1308-1325页

作者： liu zhen PAN Yanbin zhenG Jinwei School of Cyber Science and Technology Hubei Key Laboratory of Applied MathematicsHubei UniversityWuhan 430062China Key Laboratory of Mathematics Mechanization Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100190China

In ASIACCS 2015, Nu nez, et al. proposed a proxy re-encryption scheme, named NTRURe Encrypt, based on NTRU, which allows a proxy to translate ciphertext under the delegator’s public key into a re-encrypted ciphertext that can be decrypted correctly by delegatee’s private key. Because of the potential resistance to quantum algorithm, high efficiency and various applications in real life,NTRURe Encrypt has drawn lots of attention and its security has been widely discussed and *** PQCrypto2019, liu, et al. proposed two key recovery attacks against it. However, their first attack heavily relies on a weaken decryption oracle, and the second attack needs to collect about 260ciphertexts from the same message by theoretical analysis, which makes both of the attacks unrealistic. In this paper, inspired by the broadcast attack against NTRU, the authors find out that for NTRURe Encrypt the delegator and the delegatee can efficiently recover each other’s private key in polynomial time without any unrealistic assumptions. In addition, the authors also show how to fix NTRURe Encrypt to resist the proposed attacks. As a by-product, the authors also show how to commit broadcast attacks against NTRU 2001 with even dg, which was thought infeasible before.

关键词： Broadcast attack key recovery NTRU NTRUReEncrypt

Polymer-to-Monomers Chemically Recyclable Poly(imide-imine)Plastics with Extreme-Condition Resistance and Flame Retardancy

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Chinese Journal of Polymer Science 2024年第10期42卷 1525-1535,I0012页

作者： zhen-Yu Wang Xiao-Kong liu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun130012China

Polyimides are a family of high-tech plastics that have irreplaceable applications in the fields of aerospace,defense,and opto-electronics,but polyimides are difficult to be reprocessed and recycled at the end of their service life,resulting in a significant waste of ***,it is of great significance to develop recyclable polyimides with comparable properties to the commercial ***,we report a novel polymer-to-monomers chemically recyclable poly(imide-imine)(PtM-CR-PII)plastic,synthesized by cross-linking the amine-terminated aromatic bisimide monomer and the hexa-vanillin terminated cyclophosphazene monomer via dynamic imine *** PtM-CR-PII plastic exhibits comparable mechanical and thermal properties as well as chemical stability to the commercial *** PtM-CR-PII plastic possesses a high Young’s modulus of≈3.2 GPa and a tensile strength as high as≈108 MPa,which also exhibits high thermal stability with a glass transition temperature of≈220℃.Moreover,the PtM-CR-PII plastic exhibits outstanding waterproofness,acid/alkali-resistance,and solvent-resistance,its appearance and mechanical properties can be well maintained after long-term soaking in water,highly concentrated acid and base,and various organic ***,the cyclophosphazene moieties endow the PtM-CR-PII plastic with excellent flame *** PtM-CR-PII plastic exhibits the highest UL-94 flame-retarding rating of V-0 and a limiting oxygen index(LOI)value of 45.5%.Importantly,the PtM-CR-PII plastic can be depolymerized in an organic solvents-acid mixture medium at room temperature,allowing easy separation and recovery of both monomers in high *** recovered pure monomers can be used to regenerate new PtM-CR-PII plastics,enabling sustainable polymer-monomers-polymer circulation.

关键词： Chemical recyclability Polyimides Polyimines Dynamic imine bonds Mechanical properties Chemical stability

Design and Gait Planning of a Worm-inspired Metameric Robot for Pipe Crawling

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Journal of Bionic Engineering 2024年第3期21卷 1265-1277页

作者： Yu liu Qingbiao Shi zhen Chen Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen361102China

The earthworm has been attracted much attention in the research and development of biomimetic robots due to their unique locomotion mechanism,compact structure,and small motion *** paper presents a new design and prototype of a worm-inspired metameric robot with a movement pattern similar to that of *** robot consists of multiple telescopic modules connected in series through joint *** telescopic module mimics the contraction and elongation motion modes of the earthworm segments.A kinematic and dynamic analysis is conducted on the telescopic module,and an input torque calculation method is provided to ensure sufficient friction between the robot and the pipe *** gait modes of the prototype robot for straight and turning locomotion are introduced,and these modes are extended to robots constructed by different numbers of telescopic *** addition,a method is proposed to increase the friction between the robot and the pipe wall in the aforementioned gait modes without changing the robot structure,thereby improving the robot’s motion ability in *** theoretical model of gait modes has also been validated through gait *** findings of this paper would provide a useful basis for the design,modeling,and control of future worm inspired robots.

关键词： Bio-inspired robot Spatial linkage mechanism Kinematics model Peristaltic locomotion

Clinical Study on Electroacupuncture for Cervical Intervertebral Disc Herniation

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Journal of Acupuncture and Tuina Science 2013年第6期11卷 371-374页

作者： Wu Yao-chi Zhang Jun-feng Sun Yi-jun Huang Cheng-fei Shao Ping liu gui-zhen Hong Jue No.6 People’s Hospital Affiliated to Shanghai Jiaotong University Shanghai Municipal Hospital of Traditional Chinese Medicine Putuo District Center Hospital

Objective:To compare the therapeutic efficacies between electroacupuncture(EA)and medication for cervical intervertebral disc herniation(CIDH).Methods:Totally 420 patients with CIDH were randomized into two groups by random number table.210 patients in the EA group were intervened by EA at Dazhui(GV 14),Dazhu(BL 11),and Houxi(SI 3);210patients in the medication group were treated by oral administration of Meloxicam ***:The average ranks of both short and long term efficacies in the EA group were significantly lower than that in the medication group(both P<0.01);there were significant differences in comparing the total effective rates of both short and long terms between the two groups(both P<0.01).It shows that EA group has better therapeutic efficacy than the medication ***:EA is better than medication in comparing both short-term and long-term therapeutic efficacies in treating CIDH.

关键词： Intervertebral Disc Displacement Neck Pain Acupuncture Therapy Electroacupuncture

Understand the Temperature Sensing Behavior of Solid-state Polymerized PEDOT Hybrid Based on X-ray Scattering Studies

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Chinese Journal of Polymer Science 2024年第1期42卷 105-112,I0010页

作者： zhen-Hang He Guang-Feng liu Ze-Kun Zhou zhen liu Yi-Shu Zeng Peng Zhang School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSun Yat-sen UniversityGuangzhou 510275China Shanghai Advanced Research Institute(Zhangjiang Laboratory) Chinese Academy of SciencesShanghai 201204China

Poly(3,4-ethylenedioxythiophene)(PEDOT) is one of the most successful conductive polymers that recently has been used in wearable sensors for human health monitoring. In this work, we prepared a series of PEDOT hybrids consisting of PEDOT, sodium poly(styrene sulfonate)(PSSNa) and polyethylene oxide(PEO), and their preparation could be scaled-up via an adapted solid-state polymerization process. The resistance of the as-prepared PEDOT:PSS/PEO hybrid shows clear temperature response, i.e., it decreases almost linearly with the temperature increase. To understand this phenomenon, the in situ synchrotron radiation wide-and small-angle X-ray scattering(WAXS/SAXS) characterizations were undertaken to study the temperature-dependent microstructure change of the PEDOT:PSS/PEO hybrid. It demonstrated that PEDOT formed conductive paths in the hybrids, which were not destroyed by the PEO crystallization. As temperature increased, the PEO crystals' melting and the accompanying reorganization of PEDOT chains endowed the hybrid sample temperature responsiveness. Based on these fundamental knowledges, the hybrid materials were used to fabricate flexible wearable sensor that showing temperature sensing performance with an accuracy of 1 ℃. These findings shed lights on the scalable manufacturing of wearable sensors for body temperature monitoring.

关键词： Solid-state polymerization PEDOT hybrid Structure-property correlation X-ray scattering

Sobolev Mapping of the Bergman Projections on Generalized Hartogs Triangles

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Acta Mathematica Sinica,English Series 2024年第2期40卷 451-466页

作者： Hong Yan liu zhen Han TU School of Mathematics and Statistics Wuhan UniversityWuhan 430072P.R.China

In this paper,we investigate Sobolev mapping properties of the Bergman *** domain we focus on is defined byΩm/n:={(z,w)∈C^(1+N):|w1|<|z|m1/n1<1,…|wN|<|z|/m_(N)/n_(N)<1},where m=(m1,…mN)∈(Z^(+))^(N),n=(n1,…nN)∈(Z^(+))N,N∈Z^(+).Sobolev irregularity of the Bergman projections on 2 is *** also prove some Sobolev regularity results of the Bergman projections onΩm/n for m=(1,…1).

关键词： Bergman projections generalized Hartogs triangles Sobolev spaces