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Applicability of the Friedberg-Lee-Zhao Method

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Communications in Theoretical Physics 2002年第7期38卷 41-46页

作者： ZHAO Gong-Bo DING Yi-bing LI Xue-qian qian Ke WANG Guo-Li Zhaorigetu Department of Physics Nankai University Tianjin 300071 China Department of Physics Graduate School the Chinese Academy of Sciences Beijing 100039 China Department of Physics Nankai University Tianjin 300071 China Department of Physics Nankai University Tianjin 300071 China Department of Physics Nankai University Tianjin 300071 China Department of Physics Chifeng Normal College Inner-Mongolia Chifeng 024000 China

Friedberg, Lee and Zhao (FLZ) proposed a method for effectively evaluating the eigenenergies and eigen wavefunctions of quantum systems. In this work, we study several special cases to investigate applicability of the ***, we calculate the ground-state eigenenergy of the Hellmann potential as well as the Cornell potential, and also evaluate the energies of the systems where linear term is added to the Coulomb as a perturbation. The results obtained in this method have a surprising agreement with the traditional method or the numerical results. Since the results in this method have obvious analyticity compared to that in other methods, and because of the simplicity for calculations this method can be applied to solving the Schrodinger equation and provides us a better understanding of the physical essence of the concerned systems. But meanwhile applications of the FLZ method are restricted at present, especially for certain potential forms, but due to its obvious advantages, it should be further developed.

关键词： applicability, FLZ method

基于IMB模式的术后早期康复护理对胫骨平台骨折患者术后康复效果的影响

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川北医学院学报 2024年第8期39卷 1143-1147页

作者：曹冰倩方曙静宋美谕南京医科大学第一附属医院·江苏省人民医院骨科二病区江苏南京210029

目的:探讨基于信息-动机-行为技巧(IMB)模式的术后早期康复护理对胫骨平台骨折术后康复效果的影响。方法:选取173例单侧胫骨平台骨折患者为研究对象,依据术后康复护理方案不同分为对照组(n=82)和观察组(n=91)。对照组患者予以常规康复护... 详细信息

目的:探讨基于信息-动机-行为技巧(IMB)模式的术后早期康复护理对胫骨平台骨折术后康复效果的影响。方法:选取173例单侧胫骨平台骨折患者为研究对象,依据术后康复护理方案不同分为对照组(n=82)和观察组(n=91)。对照组患者予以常规康复护理;观察组患者予以基于IMB模式的早期康复护理,干预时间均为3个月。比较两组患者干预前后康复锻炼知信行水平[康复锻炼知信行水平量表评分];干预前、干预1个月及3个月后膝关节功能情况[Lysholm膝关节量表评分];住院时间、骨折愈合时间、完全负重时间及干预期间并发症发生情况。结果:干预后,两组患者康复锻炼知信行水平量表总分及各维度评分均升高(P<0.05),且观察组高于对照组(P<0.05);Lysholm膝关节量表评分均随护理时间推移而升高(P<0.05),且观察组各时间点均高于对照组(P<0.05)。干预3个月后,观察组患者膝关节优良率高于对照组(P<0.05)。观察组患者住院时间、骨折愈合时间及完全负重时间短于对照组(P<0.05);术后并发症总发生率低于对照组(P<0.05)。结论:基于IMB模式的术后早期康复护理对胫骨平台骨折患者治疗效果优异,可有效提高患者康复锻炼知信行水平,减轻患者术后疼痛,促进膝关节功能恢复,且可降低术后并发症发生率。

关键词：胫骨平台骨折信息-动机-行为技巧模式术后早期康复护理术后疼痛膝关节功能并发症

深度学习重建提高腹部能谱CT图像质量和病灶诊断的可行性研究

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中国CT和MRI杂志 2024年第6期22卷 154-157页

作者：褚冰倩沈艺宋建刘斌安徽医科大学第一附属医院放射科安徽合肥230032

目的与常规多模型迭代重建(adaptive statistica literative reconstruction Veo,ASIR-V)相比,评估深度学习图像重建(deep learning image reconstruction,DLIR)提高能谱CT单能量图像的图像质量和病灶诊断检出率的可行性。方法随机纳入65例完成腹部能谱CT扫描的患者,对病人的门脉期扫描数据分别增加在薄层(1.25mm)层厚下的ASIR-V40%、DLIR-M(中度)、DLIR-H(高度)三种重建方式进行重建。获取70keV条件下常规5m m的A SIR-V40%及薄层(1.25mm)的ASIR-V40%、DLIR-M、DLIR-H共4组的门脉期图像。对4组图像的肝脏、脾脏、竖脊肌及背部脂肪进行CT值、SD值的测量,并计算相应的SNR及CNR。此外,计算薄层(1.25m m)的3组数据中肝脏病灶在门脉期图像的检出率。图像质量主观评分及病灶的诊断信心由2名有着丰富阅片经验的放射科医师进行评分。结果对于能谱扫描下70keV的薄层(1.25mm)图像,DLIR-M组和DLIR-H组较ASIR-V4 0%组的肝脏、脾脏、竖脊肌及背部脂肪的SD值更低,SNR、CNR更高(P均<0.001),且三组数据的病灶检出率一致,而DLIR-M组和DLIR-H组的诊断信心和图像质量主观评分均高于ASIR-V40%组,其中DLIR-H组分数最佳。此外,70keV的薄层(1.25mm)DLIR-H组图像的SD值、CNR较70keV的常规5mmASIR-V40%组比较无明显统计学差异(P=0.211,0.358,0.208,0.052)。结论和常规的多模型迭代重建算法(ASIR-V)相比,用深度学习重建算法(DLIR)获得的能谱单能量图像能在保证理想的诊断性能的前提下,进一步降低腹部CT的图像噪声,获得更好的图像质量和更高的病灶诊断信心。同时,与70keV+ASIR-V40%相比,70keV+DLIR-H能够在相似图像噪声的情况下实现更薄层厚图像重建。

关键词：深度学习图像重建算法能谱成像门脉期图像质量病灶诊断

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酸性条件下小麦低聚肽增强紫薯花色苷抗氧化性的研究

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粮油食品科技 2024年第4期32卷 84-90页

作者：陆雪乔炳乾杨思徐信豪余莉莉牛丽亚江西农业大学食品科学与工程学院江西南昌330045

在pH4.0酸性条件下,添加25~100g/L的小麦低聚肽(WOPs)虽降低了紫薯花色苷(PSPAs)的热稳定性,但两者相互作用增强了其抗氧化能力,并随着其添加量的增加而增大。当添加量为100g/L时,PSPAs溶液在体外模拟消化后的DPPH、ABTS自由基清除能力... 详细信息

在pH4.0酸性条件下,添加25~100g/L的小麦低聚肽(WOPs)虽降低了紫薯花色苷(PSPAs)的热稳定性,但两者相互作用增强了其抗氧化能力,并随着其添加量的增加而增大。当添加量为100g/L时,PSPAs溶液在体外模拟消化后的DPPH、ABTS自由基清除能力和总抗氧化能力(FRAP)分别提高了1.5倍、34倍和34%,且分别在37℃和45℃贮藏7d后,其抗氧化能力没有出现显著性降低,相比于单独的PSPAs具有更强的生物活性以及更高的稳定性。紫外光谱和荧光光谱表明在实验浓度下,PSPAs可以引起WOPs特定波长下吸收峰的红移和荧光猝灭,证明WOPs和PSPAs之间存在相互作用。综上可知,WOPs具有应用于酸性PSPAs饮料开发的潜力。

关键词：紫薯花色苷小麦低聚肽抗氧化性稳定性相互作用

Estimation of OCDD degradation rate in soil

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Journal of Environmental Sciences 2005年第6期17卷 981-983页

作者： ZHAO Xing-ru ZHENG Ming-hui ZHANG bing qian Yong XU Xiao-bai State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of ScienceBeijing 100085 China

The current concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans （PCDD/Fs） were determined in soils contaminated with Chinese technical product sodium pentachlorophenate （ Na- PCP）. The estimated half-life of octachlorodioxin （OCDD） was about 14 years in contaminated soils based on the local historical record and mass balance calculation during the past 43 years（ 1960-2003）. The isomer profiles remained the same regardless of paddy field soil or riverbank soil. The results indicated that the congenerspecific information was efficient in estimating the PCDD/Fs fate in contaminated soils.

关键词： OCDD degradation rate Na-PCP

How did high temperature extremes in southern Xinjiang,China induce the repaid rise in jujube futures prices in the summer of 2021?

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Advances in Climate Change Research 2023年第3期14卷 449-457页

作者： De-qian LI Shu-Juan HU Jing-Jing ZHANG Chen-Bin GAO bing-qian ZHOU Wen-Xin ZHANG Key Laboratory for Semi-Arid Climate Change of the Ministry of Education College of Atmospheric SciencesLanzhou UniversityLanzhou 730000China

In the summer of 2021,southern Xinjiang,China,experienced a temporary period of high temperature *** of this weather event,jujube futures prices rose by more than 50%in a short *** clarify the influence mechanism of these two events,we investigated the current status of jujube farming and collected investors’online *** analysed these comments specifically using textual analysis tools,such as co-word *** showed that the concerns of investors about the reduction in jujube production triggered by high temperature extremes were the primary reason for the rapid rise in jujube futures *** in combination with the cultivation density of jujube and their adaptability to the growing environment,a new understanding can be *** is to say,when a crop is excessively densely cultivated in a region and is highly sensitive to a meteorological variable anomaly at a certain growth stage,a less destructive local extreme weather event could induce severe panic among investors regarding production reduction and thus influence the normal changes in futures *** response to the impact mechanisms revealed in this study,we proposed policy recommendations,such as strengthening the degree of crop damage disclosure and designing weather futures derivatives,to address similar situations in the *** study not only fills the gap in the research on the impact paths of high temperature extremes on jujube futures prices but also has a reference value for securing the stability of futures prices of related agricultural products in the future.

关键词： Jujube futures prices High temperature extremes Co-word networks Market hot topics Southern Xinjiang

Direct ink writing of 3D-Honeycombed CL-20 structures with low critical size

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Defence Technology（防务技术） 2020年第3期16卷 588-595页

作者： Bao-yun Ye Chang-kun Song Hao Huang qian-bing Li Chong-wei An Jing-yu Wang School of Environment and Safety Engineering North University of China030051 TaiyuanChina Shanxi Engineering Technology Research Center for Ultrafine Powder North University of China030051 TaiyuanChina China North Industries Group Corporation Limited 100821BeijingChina

3D-Honeycombed CL-20 structures with low critical size of detonation have been fabricated successfully for intelligent weapon systems using a micro-flow direct ink writing(DIW) *** CL-20-based explosive ink for DIW technology was prepared by a two-component adhesive system with waterborne polyurethane(WPU) and ethyl cellulose(EC).Not only the preparation of the explosive ink but also the principle of DIW process have been investigated *** explosive ink displayed stro ng shea rthinning behavior that permitted layer-by-laye r deposition from a fine nozzle onto a substrate to produce complex *** EC content was varied to alter the pore structure distribution and rheological behavior of ink samples after *** deposited explosive composite materials are of a honeycombed structure with high porosity,and the pore size distribution increases with the increase of EC *** phase change was observed during the preparation *** WPU and EC show good compatibility with CL-20 *** high activation energy was realized in the CL-20-based composite ink compared with that of the refined CL-20 due to the presence of non-energetic but stable *** detonation performance of the composite materials can be precisely controlled by an adjustment in the content of *** 3D honeyco mbed CL-20 structures,which are fabricated by DIW technology,have a very small critical detonation size of less than 69 μm,as demonstrated by wedge shaped charge *** ink can be used to create 3D structures with complex geometries not possible with traditional manufacturing techniques,which presents a bright future for the development of intelligent weapon systems.

关键词： Hexanitrohexaazaisowurtzitane(CL-20) Direct ink writing Micro-electro-mechanical system(MEMS) Pore structure Detonation performance

Rigid elliptical cross-section ogive-nose projectiles penetration into concrete targets

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Defence Technology（防务技术） 2021年第3期17卷 800-811页

作者： Xiang-hui Dai Ke-hui Wang Ming-rui Li Jian Duan bing-wen qian Gang Zhou Laboratory of Intense Dynamic Loading and Effect Northwest Institute of Nuclear TechnologyXi’anShaanxi710024PR China

The elliptical cross-section ogive-nose projectile(ECOP) has recently attracted attention because it is well suited to the flattened shape of earth-penetrating weapons. However, the penetration performance of ECOPs has not been completely understood. The objective of this study was to investigate the penetration performance of ECOPs into concrete targets using a theoretical method. A general geometric model of ECOPs was introduced, and closed-form penetration equations were derived according to the dynamic cavity-expansion theory. The model was validated by comparing the predicted penetration depths with test data, and the maximum deviation was 15.8%. The increment in the penetration depth of the ECOP was evaluated using the proposed model, and the effect of the majoreminor axis ratio on the increment was examined. Additionally, the mechanism of the penetration-depth increment was investigated with respect to the caliber radius head, axial stress, and resistance.

关键词： Elliptical cross-section Projectile Penetration Concrete target Dynamic cavity-expansion

UiO-66衍生物孔结构调控对其质子传导性能的影响

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化学研究与应用 2024年第9期36卷 2040-2046页

作者：路宁悦张雪莲高慧柴冰倩白熙李银涛长治医学院药学院山西长治046000 长治医学院基础医学部山西长治046000

基于微孔UiO-66-NH_(2)合成体系采用水诱导的方法制备出具有多级孔结构的UiO-66-NH_(2),后经修饰处理制备出含有不同基团的多级孔UiO-66-X衍生物,并对所制材料的质子传导性能进行了研究。采用X-射线粉末衍射(XRD)、扫描电镜(SEM)、透射... 详细信息

基于微孔UiO-66-NH_(2)合成体系采用水诱导的方法制备出具有多级孔结构的UiO-66-NH_(2),后经修饰处理制备出含有不同基团的多级孔UiO-66-X衍生物,并对所制材料的质子传导性能进行了研究。采用X-射线粉末衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、N_(2)吸附-脱附及傅里叶变换红外光谱(FT-IR)对所制材料的物化性质进行详细表征,并揭示了UiO-66-X衍生物的孔结构和基团类型对质子传导性能的影响。结果表明,具有多级孔结构的UiO-66-X衍生物可吸附较多水分子形成氢键网络以促进其质子迁移,同时,含较多质子源和质子跳跃位点数目的基团也可增强质子传导。在温度为60℃、相对湿度为93%的实验条件下,Hier-UiO-66-IM表现出最优的质子传导性能。

关键词： UiO-66衍生物孔结构质子传导