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Study of Static Adsorption Capacity of ACF for Xenon at 201 K

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Chemical Research in Chinese Universities 2002年第2期18卷 216-220页

作者： wang Ya long ZHANG hai tao wang Xu hui ZHANG Li xing CHEN Li yun XIE Jin chuan Northwest Institute of Nuclear Technology Xian 710024P.R.China

The static adsorption performances of a series of active carbon fiber(ACF)for xenon at 201 K were measured with a model ASAP2010M specific surface area and aperture distribution instrument by changing the working gas of instrument from N 2 to Xenon. Compared with grain active carbon(GAC): (1) the adsorption performance of Viscose based ACF(VACF) adsorbents is better than that of GAC; (2) owing to the difference of aperture distribution, the adsorption performance of ACF with different radicales is different under the same experiment conditions though the specific surface area is similar; (3) there is no definite relationship between adsorption performance and specific surface area; (4) the VACF A2 is the superior xenon adsorbent at the experimental temperature.

关键词： Active carbon fiber CTBT Xenon Static adsorption Adsorptive capacity Adsorptive velocity

Birthing ball on promoting cervical ripening and its influence on the labor process and the neonatal blood gas index

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World Journal of Clinical Cases 2021年第36期9卷 11330-11337页

作者： hai-chuan Shen Huan wang Bo Sun Lan-Zhi Jiang Qian Meng Obstetrical Department Lianyungang Maternal and Child Health HospitalLianyungang 222000Jiangsu ProvinceChina

BACKGROUND Term pregnancy-induced labor refers to the use of artificial methods to induce uterine contractions and terminate pregnancy after 37 *** is a common method to prevent overdue pregnancy and to deal with high-risk *** addition,it can alleviate maternal complications and cause the fetus to leave the adverse intrauterine environment early,which is beneficial to the outcome of *** To explore the effect of a birthing ball on labor by inducing cervical ripening and its influence on labor and the neonatal blood gas *** Twenty-two women who were scheduled to undergo labor induction and delivery in the obstetrics department of our hospital were randomly divided into two groups:the delivery ball group(childbirth ball combined with COOK balloon induction)and the conventional group(COOK balloon induction alone).The cervical Bishop score before and after intervention,duration of labor at each stage,mode of delivery,neonatal umbilical venous blood pH,oxygen partial pressure(PO_(2)),carbon dioxide partial pressure(PCO_(2)),and the 1-min Apgar score were *** After the intervention,the cervical Bishop score of the delivery ball group(7.84±1.52)was significantly higher than that of the conventional group(7.32±1.29)(P0.05).There was no significant difference in the pH,PO_(2),and PCO_(2) values of newborns between the delivery ball gro

关键词： Childbirth ball Induction of labor Promotion of cervical ripening Labor Blood gas index COOK balloon

Properties of multi-Gaussian Schell-model beams carrying an edge dislocation propagating in oceanic turbulence

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Chinese Physics B 2019年第10期28卷 360-366页

作者： Da-Jun Liu Yao-chuan wang Gui-Qiu wang Hong-Ming Yin hai-Yang Zhong Department of Physics College of Science Dalian Maritime University

Based on the theory of coherence, the model of multi-Gaussian Schell-model(MGSM) beams carrying an edge dislocation generated by the MGSM source is introduced. The analytical cross-spectral density of MGSM beams carrying an edge dislocation propagating in oceanic turbulence is derived, and used to study the evolution properties of the MGSM beams carrying an edge dislocation. The results indicate that the MGSM beam carrying an edge dislocation propagating in oceanic turbulence will evolve from the profile with two intensity peaks into a flat-topped beam caused by the MGSM source, and the beam will evolve into the Gaussian-like beam due to the influences of oceanic turbulence in the far *** the propagation distance increases, the MGSM beam carrying an edge dislocation propagating in oceanic turbulence with the larger rate of dissipation of mean-squared temperature(χT) and ratio of temperature to salinity contribution to the refractive index spectrum(?) or the smaller rate of dissipation of kinetic energy per unit mass of fluid(ε) evolves into the flat-topped beam or a Gaussian beam faster.

关键词： oceanic turbulence multi-Gaussian Schell-model source edge dislocation laser propagation average intensity

Ultrasound elastography for evaluating stiffness of the human lens nucleus with aging:a feasibility study

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International Journal of Ophthalmology(English edition) 2021年第2期14卷 240-244页

作者： hai-Yan Zhou Hong Yan Wei-Jia Yan Xin-chuan wang Department of Ophthalmology Shanxi Provincial People’s HospitalThird Affiliated Hospital of the School of MedicineXi’an Jiaotong UniversityXi'an 710068Shanxi ProvinceChina Department of Ophthalmology Xi’an No.4 HospitalShanxi Eye HospitalAffiliated Guangren Hospital School of MedicineXi’an Jiaotong UniversityXi'an 710004Shanxi ProvinceChina Medical School the University of SheffieldWestern BankSheffield S102TNUK Shanxi Traditional Chinese Medicine Hospital Xi'an 710003Shanxi ProvinceChina

AIM:To investigate the significance of ultrasound elastography for evaluating stiffness of the human lens nucleus in volunteers with different ***:A total of 90 volunteers(lens transparency,uncorrected visual acuity≥0.5,intraocular pressure:14-19 mm Hg)were divided into 3 groups according to age:Group A(30 people,median age:82±3.5 y,mean axial lengths 23.7±0.5 mm);Group B(30 people,median age:46±2.1 y,mean axial lengths 23.9±0.4 mm);and Group C(30 people,median age:22±3.5 y,mean axial lengths 24.0±0.4 mm).Lens nuclear stiffness was measured by Free-hand qualitative elastography by independent *** gray scale and color-coded elastography maps were *** each case,three consecutive detections were performed and strain ratio was used for statistical ***:Elastography analysis showed excellent diagnostic performance for lens *** strain ratio was lowest(0.03±0.01)%in Group A and highest(2.03±0.43)%in Group *** strain ratio was moderate(0.64±0.10)%in Group *** were significant differences between these three groups(P<0.05).The lens nucleus strain rate changes with *** aging,the lens nucleus strain rate and resilience decrease,demonstrating harder ***:The relationship between human lens stiffness and age is demonstrated by ultrasound *** age is associated with lower strain ratio and less resilience of the lens.

关键词： ultrasound elastography human lens nucleus stiffness

Giant Birefringence in Layered Compound LaOBiS2

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Chinese Physics Letters 2014年第4期31卷 174-177页

作者： wang hai College of Materials Science and Engineering Tongji University Shanghai 201804

Birefringent crystals （BFCs） have been extensively used in imaging spectrometers, laser devices, and optical com- ponents. Seeking new BFCs is important for both fundamental research and industrial applications. Employing first-principles density functional theory, we find that LaOBiS2 （space group： P4/nmm） appearing in the parent phase of the recently discovered 13iS2-superconductor exhibits superior birefringence with a maximum value of 2.94, which is 13.4 times larger than the extensively used YV04 （0.22）. Furthermore, LaOBiS2 is an indirect semiconductor with a band gap of 0.9eV, which is suitgble for optical applications. The origin of giant inherent birefringence is also discussed.

关键词： LaOBiS_2 Giant parent

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广外地区人群血脂异常与高血压相关性分析

首都公共卫生 2017年第3期11卷 121-123页

作者：郑颖刘玉红乔蕾杨辉张海川王成恒陈晶北京市广外社区卫生服务中心 100055

目的探讨血脂异常与高血压的关系。方法采用整群抽样方法,对5 599名年龄≥15岁常住户籍居民进行问卷调查、体格检查和实验室检查。结果本研究人群高血压患病率为22.0%,血脂异常患病率为22.3%。血脂异常组高血压患病率高于非血脂异常组(... 详细信息

目的探讨血脂异常与高血压的关系。方法采用整群抽样方法,对5 599名年龄≥15岁常住户籍居民进行问卷调查、体格检查和实验室检查。结果本研究人群高血压患病率为22.0%,血脂异常患病率为22.3%。血脂异常组高血压患病率高于非血脂异常组(χ~2=456.43,P<0.000 1);高血压组TC、TG和LDL-C值,均高于非高血压组(P<0.000 1);收缩压(SBP)与TC、TG和LDL-C值之间存在直线相关关系,舒张压(DBP)仅与TC、TG之间存在直线相关关系。logistic回归结果显示,高血压(OR=2.860,P<0.000 1)是血脂异常的危险因素。结论高血压与血脂异常密切相关,应加强血脂异常和高血压的联合干预。

关键词：血脂异常高血压慢性病

Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao wang Qingsong Huang School of Chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DCN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DCN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

Multilayer Antireflection Coating for Triple Junction Solar Cells

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Chinese Physics Letters 2011年第4期28卷 209-212页

作者： ZHAN Feng wang hai-Li HE Ji-Fang wang Juan HUANG She-Song NI hai-Qiao NIU Zhi-chuan State Key Lab for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

According to the theory of optical films,we simulate the reflectivity of antireflection coatings(ARCS)for solar cells of Gao.51no.5P/GaAs/Ge based on an optical transfer *** order to provide sufficient consideration of the refractive index dispersion effect of multilayer ARCS,we use multi-dimensional matrix data for reliable *** the reflection curves are obtained,the effective average reflectance Re is introduced to optimize the film system by minimizing *** of single layer(A1_(2)0_(3)),double layer(MgF_(2)/ZnS)and triple layer(MgF_(2)/A1_(2)0_(3)/ZnS)ARCS is realized by using this method for space and terrestrial *** of these ARCS are compared after *** theoretical parameters can be used to guide experiments.

关键词： Solar layer multilayer

Necessary and Sufficient Conditions for Expansions of Wilson Type

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Acta Mathematica Sinica,English Series 2008年第7期24卷 1107-1116页

作者： Kun chuan wang Department of Mathematics National Hualien University of Education Hua-Lien Taiwan 970-03

We consider expansions of the type arising from Wilson bases. We characterize such expansions for L^2（R）. As an application, we see that such an expansion must be orthonormal, in contrast to the case of wavelet expa... 详细信息

关键词： Gabor expansion orthogonality wavelet expansion Wilson expansion