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Advanced Fiber Materials 2022年第5期4卷 1094-1107页

作者： Dawang Zhou hongxia Luo Fangzhou Zhang Jing Wu Jianping Yang Huaping Wang State Key Laboratory for Modification of chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Co‑Innovation Center for Textile Industry Innovation Center for Textile Science and TechnologyDonghua UniversityShanghai 201620China

Fiber-based microplastics(FMPs)are highly persistent and ubiquitously exist in the wastewater of textile industry and urban *** remains challenging to completely remove such.newly emerged organic pollutants by the predominant physical *** this work,we investigated a photocatalytic degradation catalyzed by TiO_(2) catalyst to demonstrate the feasibility of implementing efficient chemical protocol to fast degrading polyethylene terephthalate(PET)-FMPs(a major FMP type existing in environment).The result shows that a hydrothermal pretreatment(180℃/12 h)is necessary to induce the initial rough appearance and molecular weight *** the comprehensive action of the nano-flower shaped n doped-TiO_(2) catalyst(Pt@n-TiO_(2)-1.5%)on the relatively low molecular weight intermediates,an approximate 29%weight loss was induced on the pretreated PET-FMPs,which is about 8 times superior to the untreated *** work not only achieves a superior degradation effect of PET-FMPs,but also provides a new inspiration for the proposal of reduction strategies in the field of environmental remediation in the future.

关键词： Microplastics Fiber-based microplastics Polyethylene terephthalate Photocatalytic degradation Hydrothermal pretreatment

The Twin Domination number of Cartesian Product of Directed Cycles

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Journal of Mathematical Research with Applications 2016年第2期36卷 171-176页

作者： hongxia MA Juan LIU College of Mathematics Sciences Xinjiang Normal University

Let γ*（D） denote the twin domination number of digraph D and let Cm Cn denote the Cartesian product of C;and C;, the directed cycles of length m, n ≥ 2. In this paper, we determine the exact values: γ*（C;?C;） = n; γ*（C;?C;） = n if n ≡ 0（mod 3）,otherwise, γ*（C;?C;） = n + 1; γ*（C;?C;） = n + n/2 if n ≡ 0, 3, 5（mod 8）, otherwise,γ*（C;?C;） = n + n/2 + 1; γ*（C;?C;） = 2n; γ*（C;?C;） = 2n if n ≡ 0（mod 3）, otherwise,γ*（C;?C;） = 2n + 2.

关键词： twin domination number Cartesian product directed cycles

基于改进的机器学习模型对重症急性胰腺炎诊断的早期预测

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陆军军医大学学报 2024年第7期46卷 753-759页

作者：李龙尹梁宇种菲菲童宁黎娜刘洁余相江王耀丽许红霞陆军特色医学中心临床营养科重庆400042 联勤保障部队第九四五医院急诊与重症医学科四川雅安625000 陆军特色医学中心重症医学科重庆400042

目的基于改进的机器学习模型建立重症急性胰腺炎诊断的早期预测模型,并分析其临床价值。方法纳入2014年1月至2023年8月陆军特色医学中心消化内科、肝胆外科以及联勤保障部队第九四五医院急诊与重症医学科收治的352例急性胰腺炎患者,根... 详细信息

目的基于改进的机器学习模型建立重症急性胰腺炎诊断的早期预测模型,并分析其临床价值。方法纳入2014年1月至2023年8月陆军特色医学中心消化内科、肝胆外科以及联勤保障部队第九四五医院急诊与重症医学科收治的352例急性胰腺炎患者,根据病情严重程度将其分为重症组(n=88)和非重症组(n=264),开展病例对照研究。利用RUSBoost模型以及改进的阿基米德优化算法,分析入院48 h内的39项常规实验室生化指标,帮助构建重症急性胰腺炎早期诊断预测模型,同步完成特征筛选和超参数优化,并利用ReliefF算法特征重要性排序和Logistic多因素分析,对筛选出的特征进行价值分析。结果在训练集上,改进机器学习模型的曲线下面积(area under curve,AUC)为0.922;在测试集上,改进机器学习模型的AUC达到了0.888。基于改进机器学习模型筛选出的预测重症急性胰腺炎发生的4个关键特征分别为C反应蛋白、血氯、血镁、纤维蛋白原水平,与ReliefF算法特征重要性排序和Logistic多因素分析结果相吻合。结论应用改进机器学习模型分析实验室检查结果,可帮助临床早期预测重症急性胰腺炎的发生。

关键词：重症急性胰腺炎机器学习模型阿基米德优化算法 C反应蛋白镁

Effects of Traditional ch.nese Medicine herbs for tonifying Qi and kidney, and replenishing spleen on intermittent asthma in children aged 2 to 5 years old

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Journal of Traditional ch.nese Medicine 2016年第1期36卷 32-38页

作者： Geng Yingying Wang Wenge Zhang Junhong Bi Shuying Li hongxia Lin Meijiao Department of Pediatrics The General Hospital of the Air Force Chinese People's Liberation Army Department of Pediatrics Dongzhimen Hospital Affiliated to Beijing University of China Medicine

OBJECTIVE: To evaluate the efficacy and safety of Traditional ch.nese Medicine(TCM) herbs for tonifying Qi and kidney, and replenishing spleen on intermittent asthma in children aged 2 and 5 ***: A randomized, single-blind, placebo controlled trial was conducted. children with intermittent asthma were enrolled and their baseline conditions were measured using a questionnaire. A total of 60 participants, aged 2 to 5, were randomized into either the treatment group(n = 40) or the placebo group(n = 20). The treatment group was treated with granules of TCM herbs for tonifying Qi and kidney, and replenishing spleen, and the placebo group was given placebo granules for 3 *** number of asthma attacks was counted and TCM syndrome scores were measured at 1, 2, 3, 6, 9,and 12 months. The airway resistance and levels of eosinophil cationic protein for the two groups were observed before and after 3 months. The results were statistically ***: Compared with the placebo group, the number of asthma attacks significantly decreased in the treatment group(P nt group, the TCM syndrome scores decreased after 1 and 2 months; there was also a significant difference in scores between the two groups(P nce remained after the medicine was stopped for 9 months(P nth treatment, compared with the placebo group, the airway resistance decreased in the treatment group(P no adverse events were reported in the treatment ***: The TCM herbs for tonifying Qi and kidney, and replenishing spleen reduced the number of intermittent asthma attacks, decreased the TCM syndrome scores, and reduced the airway resistance in the children aged 2 to 5.

关键词： Asthma child, preschool Medicine,ch.nese traditional Reinforcing Qi and kidney Strengthening spleen

Observed features of temperature, salinity and current in central chukchi Sea during the summer of 2012

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Acta Oceanologica Sinica 2015年第5期34卷 51-59页

作者： HE Yan LIU na ch.n hongxia TEnG Fei LIn Lina WAnG Huiwu Laboratory of Marine Science and numerical modeling The First Institute of OceanographyState Oceanic Administration College of Oceanography and Environment Ocean University of China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of Sciences

During the summer of 2012, the fifth ch.nARE Arctic Expedition was carried out, and a submersible mooring system was deployed in M5 station located at （69°30.155＇n,169°00.654＇W） and recovered 50d later. A set of temperature, salinity and current profile records was acquired. The characteristics of these observations are analyzed in this paper. Some main results are achieved as below. （1） Temperature generally decreases while salinity generally increases with increasing depth. The average values of all records are 2.98℃ and 32.21 psu. （2） Salinity and temperature are well negatively correlated, and the correlation coefficient between them is -0.84. However, they did not always vary synchronously. Their co-variation featured different characters during different significant periods. （3） The average velocity for the whole water column is 141 mm/s with directional angle of 347.1°. The statistical distribution curve of velocity record number gets narrower with increasing depth. More than 85% of the recorded velocities are northward, and the mean magnitudes of dominated northward velocities are 100-150 mm/s. （4） Rotary spectrum analysis shows that motions with low frequency take a majority of energy in all layers. The most significant energy peaks for all layers are around 0.012 cph （about 3.5 d period）, while the tidal motion in mooring area is nonsignificant. （5） Velocities in all layers feature similar and synchronous temporal variations, except for the slight decrease in magnitude and leftward twist from top to bottom. The directions of velocity correspond well to those of Surface wind. The average northward volume transport per square meter is 0.1-0.2 m3/s under southerly wind, but about -0.2 m3/s during northerly wind burst.

关键词： chukchi Sea submersible mooring measurement 1 ong-term observations temperature and salinity,velocity profile

组织学绒毛膜羊膜炎对早产儿并发症及1岁时神经发育的影响

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中国儿童保健杂志 2024年第9期32卷 947-952页

作者：谢海霞罗洪霞刘海霞邵琴楠冯国隽文亚兰江油市人民医院四川江油621700

目的探讨组织学绒毛膜羊膜炎(HCA)对早产儿并发症及1岁时神经发育的影响,为围产儿管理及早期干预提供依据。方法选取2017年1月-2022年12月江油市人民医院出生的342例早产儿为研究对象,根据其是否暴露于HCA及其严重程度分为对照组214例... 详细信息

目的探讨组织学绒毛膜羊膜炎(HCA)对早产儿并发症及1岁时神经发育的影响,为围产儿管理及早期干预提供依据。方法选取2017年1月-2022年12月江油市人民医院出生的342例早产儿为研究对象,根据其是否暴露于HCA及其严重程度分为对照组214例、轻度HCA组38例、中度HCA组56例和重度HCA组34例,比较4组早产儿并发症和纠正胎龄1岁时神经发育状况,并分析不同程度HCA对早产儿神经发育的影响。结果4组早产儿的胎龄、出生体重、剖宫产和胎膜早破发生率差异有统计学意义(F=6.546、14.780、χ^(2)=5.427、6.215,P<0.05)。在并发症方面,4组早产儿的早发型败血症(EOS)和Ⅱ级以上脑室内出血(IVH)发生率差异有统计学意义(χ^(2)=1.273、2.457,P<0.05)。4组早产儿纠正胎龄1岁时大运动和精细动作发育差异有统计学意义(F=14.89、10.23,P<0.05);进一步组间两两比较,与对照组相比,重度HCA组适应性、大运动和精细动作发育均落后(P<0.05),中度HCA组大运动和精细动作落后(P<0.05);与轻度HCA组相比,重度HCA组适应性和大运动落后(P<0.05),中度HCA组大运动发育落后(P<0.05);与中度HCA组相比,重度HCA组大运动发育落后(P<0.05)。Logistic多元回归分析显示,与对照组相比,重度HCA组适应性(OR=1.559,95%CI:1.084~2.869)和大运动(OR=2.958,95%CI:1.824~4.662)发育落后的风险相对较高(P<0.05),中度HCA组大运动发育落后风险增高(OR=1.428,95%CI:1.014~3.752,P<0.05)。结论HCA与早产儿EOS和Ⅱ级以上IVH的发生有关,且会增加早产儿1岁时神经发育异常的风险,尤其是中-重度HCA。

关键词：组织学绒毛膜羊膜炎早产儿并发症神经发育

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海军某院校学员膳食营养调查与评价

海军军医大学学报 2024年第4期45卷 515-519页

作者：张东波周启程刘文博陈涛朱星辰林宇轩沈慧李红霞海军军医大学(第二军医大学)海军医学系海军营养与食品卫生学教研室上海200433

目的了解军校学员食物与营养素摄入、体格发育、能量消耗和体能素质等情况,评估学员膳食营养状况。方法选择海军某院校预防医学专业本科学员共46人作为调查对象,通过膳食调查、体格测量、能量消耗调查、膳食营养问卷调查及体能测试等方... 详细信息

目的了解军校学员食物与营养素摄入、体格发育、能量消耗和体能素质等情况,评估学员膳食营养状况。方法选择海军某院校预防医学专业本科学员共46人作为调查对象,通过膳食调查、体格测量、能量消耗调查、膳食营养问卷调查及体能测试等方式评估学员的热能摄入、营养素摄入及体质情况。结果46名军校学员粮食、蔬菜、水果、水产类、奶及奶制品、植物油、菌藻类等食物摄入偏少,畜肉、禽肉类食物摄入过多。学员人均每日能量摄入量为3444 kcal(1 kcal=4.184 kJ),大于军标每人每日能量摄入量上限(3000 kcal),也大于通过24 h生活观察法计算得到的人均每日能量消耗量(2656 kcal)。在三大产能营养素中,碳水化合物供能比不足(32.8%,军标55%~65%),脂肪供能比超标(49.8%,军标20%~30%),蛋白质供能比稍高(17.4%,军标12%~15%)。在微量营养素中,磷、钠、铁的摄入量超标,维生素A摄入不足。体型超重/肥胖者(13人,28.3%)、体能测试综合成绩不及格者(16人,34.8%)占比较高。问卷调查结果显示,学员平均营养知识得分较低(67.4分)。结论学员膳食结构不尽合理,三大产能营养素配比不平衡,微量营养素摄入不均衡,超重者比例偏高。建议减少畜肉、禽肉类食物摄入,减少调味品用量,增加粮食、蔬菜、水果摄入,增加水产类、奶及奶制品类食物供应,并加强合理膳食科普宣传教育。

关键词：营养评估军校学员膳食调查体格测量

Effect of Alkylaluminum Activators on Ethylene Trimerization Based on 2,5-DMP/Cr（III）/TCE Catalyst System

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ch.nese Journal of chemistry 2011年第6期29卷 1149-1153页

作者： Jiang, Tao Ji, Rongxin ch.n, hongxia Cao, ch.ngang Mao, Guoliang ning, Yingnan College of Material Science and chemical Engineering Tianjin University of Science & Technology Tianjin 300457 China Department of chemistry and chemical Engineering Northeast Petroleum University Daqing HeUongjiang 163318 China

Ethylene trimerization toward 1-hexene catalytic system with 2,5-dimethylpyrrole （2,5-DMP）/Cr（III）/alkylaluminum/tetrachloroethane （TCE） was investigated. The effects of various cocatalysts on catalytic activity and product selectivity were discussed. The results showed that triethylaluminum （TEA）, trimethylaluminum （TMA）, tri-n-hexylaluminum （TnHA） and tri-isobutylaluminum （TIBA） were all effective cocatalysts for ethylene trimerization toward 1-hexene. 2,5-DMP/Cr（III）/TEA/TCE catalytic system afforded the best results for ethylene trimerization, while reducing the level of by-product formation. Some specific interaction modes of alkylaluminum with active Cr species in the catalytic cycle were proposed to explain the effect of cocatalyst on catalytic activity and 1-hexene selectivity.

关键词： ethylene oligomerization cocatalyst coordination modes

Study on Glass Fiber Dispersion Technology in SiO_2 Aerogel-glass Fiber Composite Insulation Materials

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ch.na's Refractories 2019年第1期28卷 32-36页

作者： WAnG Haimei SUn Xiaofei LI hongxia State Key Laboratory of Advanced Refractories Sinosteel Luoyang Institute of Refractories Research Co. Ltd.

In order to improve the mech.nical properties of SiO_2 aerogel-glass fiber composites, effects of different solvents(cyclohexane, n-hexane, ethanol, acetone) and different dispersing modes(planetary ball milling, ultrasonic dispersion and mech.nical stirring) and dispersing duration(10-40 min) on the dispersion of chopped alkali-free glass fiber bundles were studied to determine the best dispersion process. On this basis, the materials were batched according to the mass fraction of SiO_2 aerogel powder to chopped alkali free glass fiber bundles of 90:10, and a certain amount of zinc oxide light-screening agent and phenolic resin binder were added. SiO_2 aerogel glass fiber composite specimens were prepared by direct adding chopped alkali free glass fiber bundles and pre-dispersed chopped alkali free glass fiber bundles, respectively. The cold crushing strength and the thermal conductivity at different surface temperatures(300, 400, 500 and 600 ℃, respectively)of the specimens were measured. The results show that:(1) the optimum dispersion process of chopped alkali-free glass fiber bundles is using ethanol as solvent and mech.nical stirring for 30 min;(2) pre-dispersion of chopped alkali-free glass fiber bundles has little effect on the thermal conductivity of SiO_2 aerogel-glass fiber composites but can improve the cold crushing strength.

关键词： silicon aerogel-glass insulating materials alkali-free glass fiber fiber reinforcement dispersion

Optimization of hypocrellin B derivative amphiphilicity and biological activity

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ch.nese Science Bulletin 2009年第12期54卷 2045-2050页

作者： LIU Xin XIE Jie ZHAnG LuYong ch.n hongxia GUYing ZHAO JingQuan Beijing national Laboratory for Molecular Sciences (BnLMS) and Key Laboratory of Photochemistry Institute of Chemistry Chi- nese Academy of Sciences Beijing 100080 China Department of Laser Medicine Chinese People's Libration Army General Hospital Beijing 100853 China

To satisfy the dual requirements of the fluent transportation in blood and the affinity to the target tissues of vascular diseases, hypocrellin derivatives with optimized amphiphilicity are expected. In this work, 3-amino-1-propanesulfonic acid and 4-amino-1-butanesulfonic acid substituted hypocrellin B, named compounds 1 and 2, were designed, synthesized in high yields and characterized. Besides greatly strengthened red absorption, the maximum solubility of compound 2 in phosphate buffered saline (PBS) is 4.2 mg/mL which is just enough to prepare an aqueous solution for intravenous injection in clinically acceptable concentration, while the partition coefficient between n-octanol and PBS, 5.6, benefits the cell-uptake and biological activity as well. Furthermore, EPR measurements reveal that the photosensitization activities of the two compounds to generate semiquinone anion radicals, superoxide anion radicals and singlet oxygen are a little bit higher than those of taurine substituted hypocrellin B (THB), but the photodynamic activities to human lung cancer A549 cells are several times that of THB, mainly due to increases in lipophilicity and cell-uptake.

关键词：竹红菌乙素生物活性衍生物优化超氧阴离子自由基 A549细胞磷酸盐缓冲液电子顺磁共振