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Variation analyses of growth and wood properties of Larix olgensis clones in China

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Journal of Forestry Research 2017年第4期28卷 687-697页

作者： Shaopeng Yin zhenhai Xiao Guohui Zhao Xin Zhao Xiaoyang Sun Ying Zhang Fuwei Wang Shuchun Li Xiyang Zhao Guan-Zheng Qu State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People’s Republic of China Tree Seedling Management Station Forestry Department of Jilin ProvinceChangchun 130000People’s Republic of China Seed Orchard of Siping Siping 136000People’s Republic of China

The growth traits (tree height, diameter at breast height, and stem straightness degree) and wood properties [wood density (WD), fiber length, fiber width, ash content (AC), lignin content, cellulose content, hemicellulose content (HEC), and holocellulose content] of 208 26-year-old Larix olgensis clones were analyzed. Except for WD and AC, there were significant differences (p < 0.01) for all traits among clones. The phenotypic coefficient of variation and repeatability of all traits were 9.34-35.33% and 0.218-0.930, respectively. Tree height and diameter at breast height showed significant positive correlation; however, the correlation coefficients among growth characteristics and wood properties were mostly not significant. Ten clones (L70, L56, L82, L90, L59, L91, L61, L92, L86, and L64) were selected as excellent clones under a selection rate of 5%, using tree height, diameter at breast height, and stem straightness degree as evaluation indexes, providing genetic gains of 28.69, 17.96, and 0.67%, respectively. Ten clones (L88, L305, L59, L66, L253, L304, L277, L298, L248, and L293) were selected as excellent clones using wood properties as an evaluation index, with a selection rate of 5%, providing genetic gains in WD, fiber length, fiber width, cellulose content, and HEC of 4.14, 3.64, 9.28, 6.77, and 9.61%, respectively. This study provides a theoretical basis for selecting excellent L. olgensis clones.

关键词： Genetic variation Growth traits Larix olgensis Wood properties

Heat-sensitive moxibustion for lumbar disc herniation:a meta-analysis of randomized controlled trials

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Journal of Traditional Chinese Medicine 2012年第3期32卷 322-328页

作者： Rixin Chen Jun Xiong zhenhai Chi Bo Zhang Acupuncture and Rehabilitation Department The Affiliated Hospital of Jiangxi University of Traditional Chinese MedicineNanchang 330006China Key Laboratory of Heat-sensitive Moxibustion State Administration of Traditional Chinese Medicine of People’s Republic of ChinaNanchang 330006China Acupoint Sensibility Laboratory State Administration of Traditional Chinese Medicine of People’s Republic of ChinaNanchang 330006China

OBJECTIVE:To assess the efficacy and safety of heat-sensitive moxibustion in the treatment of lumbar disc herniation(LDH).METHODS:Randomized controlled trials(RCTs) involving heat-sensitive moxibustion in the treatment of LDH were retrieved from the Chinese Biological Medical Literature database(1978-20011),Weipu database(1989-2011),Wanfang digital journal(1998-2011),China National Knowledge Internet(1979-2011),PubMed(1966-2011),EMBASE(1980-2011),and Cochrane Library(Issue 1,2011).Hand-search of the relevant journals from the Library of Jiangxi University of Traditional Chinese Medicine was also adopted for the collection of *** were extracted and evaluated by two reviewers independently with a specially designed extraction *** Cochrane Collaboration's RevMan 5.0.20 software was used for data ***:A total of 6 trials involving 580 patients were ***-analysis showed that the total effectiveness rate in the heat-sensitive moxibustion group was significantly different when compared with conventional moxibustion [RR=1.19,95% CI [1.06,1.33)] and diclofenac sodium [RR=1.47,95% CI [1.17,1.85)],but similar to that of *** cure rate in the heat-sensitive moxibustion group was significantly different when compared with conventional moxibustion [RR=1.58,95% CI(1.04,2.40)] and diclofenac sodium [RR=1.91,95% CI(1.01,3.60)],but similar with that of *** terms of the Japanese Orthopaedic Association scores,significant differences were noted in subjective indices,objective indices,and daily life *** trials reported that there were no adverse events over the duration of ***:Compared with conventional moxibustion,acupuncture,and diclofenac sodium,heat-sensitive moxibustion in the treatment of LDH is superior in *** large-scale trials are required to define the role of heat-sensitive moxibustion in the treatment of this disease.

关键词： Moxibustion Intervertebral disk displacement Randomized controlled trial Meta-analysis

ON A NONLINEAR DEGENERATE PARABOLICEQUATION

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Systems Science and Mathematical Sciences 1999年第S1期12卷 122-128页

作者： LIU zhenhai(Department of Mathematics, Changsha University of Electric Power,Changsha 410077, China)

In this papaer, existence results for degenerate parabolic boundary valueproblems of second order are proved. The weak solution is sought in a suitable weightedSobolev space by using the generalized degree theory.

关键词： Nonlinear parabolic degenerate equation existence results.

SINGULAR DOUBLE PHASE EQUATIONS

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Acta Mathematica Scientia 2023年第3期43卷 1031-1044页

作者：刘振海 Nikolaos S.PAPAGEORGIOU Guangxi Colleges and Universities Key Laboratory of Complex System Optimization and Big Data Processing Yulin Normal UniversityYulin537000China Guangxi Key Laboratory of Hybrid Computation and IC Design Analysis Guangxi Minzu UniversityNanning530006China Department of Mathematics National Technical UniversityZografou Campus15780AthensGreece

We study a double phase Dirichlet problem with a reaction that has a parametric singular term. Using the Nehari manifold method, we show that for all small values of the parameter, the problem has at least two positiv... 详细信息

关键词： double phase singular term unbalanced growth Musielak-Orlice spaces Nehari manifold positive solutions

Tailoring nanoprecipitates for ultra-strong high-entropy alloys via machine learning and prestrain aging

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Journal of Materials Science & Technology 2021年第10期69卷 156-167页

作者： Tao Zheng Xiaobing Hu Feng He Qjngfeng Wu Bin Han Chen Da Junjie Li Zhijun Wang Jincheng Wang Ji-jung Kai zhenhai Xia C.T.Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072China Center for Advanced Nuclear Safety and Sustainable Development City University of Hong KongHong KongChina Institute of Atomic and Molecular Science.Shaanxi University of Science and Technology Xi'an710021China Department of Material Science and Engineering College of Science and EngineeringCity University of Hong KongHong KongChina Department of Materials Science and Engineering University of North TexasDentonTXUSA Center for Advanced Structural Materials Department of Mechanical EngineeringCollege of Science and EngineeringCity University of Hong KongHong KongChina

The multi-principal-component concept of high-entropy alloys(HEAs) generates numerous new *** them,nanoscale precipitated HEAs have achieved superior mechanical properties and shown the potentials for structural ***,it is still a great challe nge to find the optimal alloy within the numerous *** to now,the reported nanoprecipitated HEAs are mainly designed by a trialand-error approach with the aid of phase diagram calculations,limiting the development of structural *** the current work,a novel method is proposed to accelerate the development of ultra-strong nanoprecipitated *** the guidance of physical metallurgy,the volume fraction of the required nanoprecipitates is designed from a machine learning of big data with thermodynamic foundation while the morphology of precipitates is kinetically tailored by prestrain *** a proof-of-principle study,an HEA with superior strength and ductility has been designed and systematically *** newly developed γ’-strengthened HEA exhibits 1.31 GPa yield strength,1.65 GPa ultimate tensile strength,and 15% tensile *** probe tomography and transmission electron microscope characterizations reveal the well-controlled high γ’ volume fraction(52%) and refined precipitate size(19 nm).The refinement of nanoprecipitates originates from the accelerated nucleation of the γ’ phase by prestrain aging.A deeper understanding of the excellent mechanical properties is illustrated from the aspect of strengthening mecha ***,the versatility of the current design strategy to other precipitation-hardened alloys is discussed.

关键词： High-entropy alloys Machine learning Prestrain aging Mechanical properties Strengthening mechanisms

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高填充无卤阻燃电缆料的研制

合成树脂及塑料 2005年第6期22卷 13-16页

作者：何震海中国石化北京燕化石油化工股份有限公司树脂应用研究所北京102500

通过研究基体树脂、Mg(OH)2及其填充量对电缆料性能的影响,确立高填充无卤阻燃电缆料的配方为乙烯-乙酸乙烯酯共聚物、低密度聚乙烯、Mg(OH)2、马来酸酐接枝乙烯-乙酸乙烯酯与抗氧剂的质量比为28∶8∶50∶10∶4;利用扫描电子显微镜观察... 详细信息

通过研究基体树脂、Mg(OH)2及其填充量对电缆料性能的影响,确立高填充无卤阻燃电缆料的配方为乙烯-乙酸乙烯酯共聚物、低密度聚乙烯、Mg(OH)2、马来酸酐接枝乙烯-乙酸乙烯酯与抗氧剂的质量比为28∶8∶50∶10∶4;利用扫描电子显微镜观察了复合材料断面的形貌。结果表明,加入马来酸酐接枝乙酸乙烯酯作为界面相容剂能够强化界面柔性层的脱黏作用,有利于氢氧化镁在基体树脂中均匀分散,从而解决了由于大量填充氢氧化镁造成的电缆料力学性能下降的问题,改善了电缆料的综合性能。

关键词：低密度聚乙烯氢氧化镁阻燃电缆相容剂

Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input

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Photonic Sensors 2023年第1期13卷 56-65页

作者： Jiaojiao WANG Xingfan CHEN Shaochong ZHU zhenhai FU Nan LI Huizhu HU State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Quantum Sensing Center Zhejiang LabHangzhou 310000China

Sensing sensitivity is the key performance of optical *** adjusting the frequency and magnitude of an applied Coulomb force as an input of optical tweezers,we directly measured the sensitivity and signal-to-noise ratio(SNR)of a system and indirectly calculated the actual noise *** with an output filter,the relationship between the SNR and bandwidths was *** established the simulation model of a system using Simulink and simulated the relationship between the SNR and magnitude of the input forces and filter *** addition,we built an experimental system to determine the relationship between the SNR and the magnitude of the input forces and filter *** actual minimum detectable force was measured as 1.8275×10^(-17)N at a 1Hz *** experimental results were correlated with the simulation and theoretical results,confirming the effectiveness of the proposed method and demonstrating the high sensitivity of vacuum optical tweezers as mechanical *** proposed a novel method of calibration and measurement of system sensing parameters by applying an actual force that was more direct and precise than the theoretical calculation method that requires accurate fitting parameters,such as the particle radius and *** method can be employed to analyze the system noise and phase characteristics to confirm and improve the real performance of the system.

关键词： Optical tweezers sensitivity Coulomb force SNR Simulink system noise characteristic

Is there a survival benefit from adjuvant chemotherapy for patients with liver oligometastases from colorectal cancer after curative resection?

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Cancer Communications 2018年第1期38卷 319-328页

作者： Zhizhong Pan Jianhong Peng Junzhong Lin Gong Chen Xiaojun Wu zhenhai Lu Yuxiang Deng Yujie Zhao Qiaoqi Sui Desen Wan Department of Colorectal Surgery Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer Medicine651 Dongfeng Road EastGuangzhou 510060GuangdongP.R.China

Background:Although colorectal oligometastases to the liver can potentially be cured with aggressive local abla-tion,the efficacy of adjuvant chemotherapy(ACT)for such metastasis remains *** present study explored the effects of ACT on patients with colorectal liver oligometastases(CLO)after curative resections and aimed to iden-tify patients who could benefit from ***:We retrospectively analyzed 264 eligible patients with CLO who underwent curative resection between September 1999 and June ***-free survival(RFS)and overall survival(OS)were analyzed using the Kaplan-Meier method and log-rank test;prognostic factors were a by Cox regression ***:Among 264 patients,200(75.8%)patients received ACT and 64(24.2%)did not receive *** two groups did not significantly differ in clinicopathologic characteristics,and had comparable 3-year OS and RFS rates(RFS:42.1%vs.45.7%,P=0.588;OS:69.7%vs.62.7%,P=0.446)over a median follow-up duration of 35.5 months,irrespective of preoperative *** markedly improved 3-year OS in high-risk patients with Memorial Sloan-Kettering Cancer Center clinical risk scores(MSKCC-CRS)of 3-5(68.2%vs.33.8%,P=0.015),but presented no additional benefit in patients with MSKCC-CRS of 0-2(72.2%vs.78.6%,P=0.834).In multivariate analysis,ACT was independently associated with improved OS in patients with MSKCC-CRS of ***:ACT might offer a prognostic benefit in high-risk patients with CLOs after curative liver resection,but not in low-risk ***,patients’risk status should be determined before ACT administration to optimize postoperative therapeutic strategies.

关键词： Colorectal cancer Oligometastases Adjuvant chemotherapy Liver resection Benefit

Bacterial nanocellulose assembly into super-strong and humidity-responsive macrofibers

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Journal of Bioresources and Bioproducts 2024年第3期9卷 369-378页

作者： Yadong Zhao Zheng Yang Rusen Zhou Bin Zheng Meiling Chen Fei Liu Wenhua Miao Renwu Zhou Patrick Cullen zhenhai Xia Liming Dai Kostya(Ken)Ostrikov School of Food and Pharmacy Zhejiang Ocean UniversityZhoushan 316022China State Key Laboratory of Electrical Insulation and Power Equipment Center for Plasma BiomedicineXi'an Jiaotong UniversityXi'an 710049China School of Chemical and Biomolecular Engineering University of SydneySydney 2006Australia School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbane 4000Australia Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Australian Carbon Materials Centre(A-CMC) School of Chemical EngineeringUniversity of New South WalesSydneyNew South Wales 2052Australia

Cellulose macrofibers (MFs) are gaining increasing interest as natural and biodegradable alternatives to fossil-derived polymers for both structural and functional applications. However, simultaneously achieving their exceptional mechanical performance and desired functionality is challenging and requires complex processing. Here, we reported a one-step approach using a tension-assisted twisting (TAT) technique for MF fabrication from bacterial cellulose (BC). The TAT stretches and aligns BC nanofibers pre-arranged in hydrogel tubes to form MFs with compactly assembled structures and enhanced hydrogen bonding among neighboring nanofibers. The as-prepared BC MFs exhibited a very high tensile strength of 1 057 MPa and exceptional lifting capacity (over 340 000 when normalized by their own weight). Moreover, due to the volume expansion of BC nanofibers upon water exposure, BC MFs quickly harvested energy from environmental moisture to untwist the bundled networks, thus generating a torsional spinning with a peak rotation speed of 884 r/(min·m). The demonstrated rapid and intense actuation response makes the MFs ideal candidates for diverse humidity-response-based applications beyond advanced actuators, remote rain indicators, intelligent switches, and smart curtains.

关键词： Nanocellulose assembly Cellulose macrofibers Super-strong Humidity-responsive actuation Moisture Fast actuation