Improvement of hydrothermal stability of zeolitic imidazolate frameworks

The metal-organic framework ZIF-8, which undergoes hydrolysis under hydrothermal conditions, is endowed with high water-resistance after a shell-ligand-exchange-reaction. The stabilized ZIF-8 retains its structural characteristics with improved application performances in adsorption and membrane separation. © 2013 The Royal Society of Chemistry

我国企业对外投资方式分析

近年来,对外投资已成为我国企业参与经济全球化、形成跨国公司的重要形式。虽然我国对外投资起步相对较晚,但是对外投资却在快速的发展。随着全球并购浪潮的来临,跨国并购逐渐成为国际投资的主要方式。我国的投资方式也由"绿地投资"逐渐向跨国并购转变,并购的规模和金额也在不断的增大,尤其是近几年,大规模的跨国收购浪潮正悄然涌起。我国企业应根据企业自己的能力和经营目标,来作出正确的投资方式

拓展闽台经贸合作空间 加快海峡西岸经济发展

本文以如何扩大闽台贸易和投资为切入点,分析近期导致福建对外开放步伐放慢的原因。在简单回顾闽台贸易与投资发展现状的基础上,我们认为闽台贸易投资关系不论是在福建还是在大陆对台经贸关系中的地位都在不断下降。福建工业化进程的相对缓慢,中心城市经济规模小、没有与周边城市形成产业互补关系是制约福建吸引台资(以及外资)的两个主要原因。因此,强化工业基础、大力发展中心城市,并拓展闽台在第一产业以及金融物流等服务业领域的合作空间是进一步扩大闽台经贸合作空间的关键

Study on Phase-change Cold Storage Characteristics of Al_2O_3-H_2O Nanofluids

Al2O3-H2O nanofluids with uniform dispersancy were prepared in which a spot of Al2O3 nanoparticles with a particle size of 20nm suspended in water and the dispersant and supersonic oscillating were added.The cold storage characteristics of the nanofluids and water were experimentally compared.The results show that the nanoparticles in water reduced the subcooling degree of water and the freezing time,and the cold storage capacity of the nanofluids was larger than that of water for the same time

单个纳米颗粒的光散射检测技术进展

纳米颗粒因其在生物医学和生物分析领域具有重要的应用前景而备受关注.单个纳米颗粒的光散射检测技术是一种简单、有效地对纳米颗粒的尺寸、尺寸分布及浓度等进行表征的分析方法,尤其在揭露纳米颗粒的内在异质性方面具有独特优势.然而瑞利散射强度随粒径减小呈六次方衰减,使得小尺寸单个纳米颗粒的检测非常具有挑战性.本文对近年发展起来的多种单个纳米颗粒的光散射检测技术进行综述

Evaluation on difference of therapeutic efficacy of Jiawei Xiaoyao Granules and Pills in treatment of emotional disorder during perimenopause based on Greene Climacteric Scale

目的:在前期加味逍遥丸治疗围绝经期情绪障碍具有比较优势的基础上,基于grEEnE量表探讨其颗粒剂和丸剂不同剂型间疗效差异。方法:经筛选后患有情绪障碍的围绝经期女性75例随机等分为A、b、C3组,分别对应采用帕罗西汀、加味逍遥丸和加味逍遥颗粒剂治疗8周。所有患者在治疗前后各进行1次grEEnE及其子因子评定,并在观察期结束时进行TESS评定。结果:grEEnE总分差及其焦虑、抑郁因子分差:3种治疗方法均能改善,且相互间无显著差异;grEEnE性因子和血管因子分差:后二组均优于A组(P<0.01);TESS评分:与A组比较,b、C组均有统计学意义(P<0.01),评分均小于A组,且后二组间无显著差异。结论:加味逍遥的2种剂型间疗效无显著差异,考虑到帕罗西汀的不良反应,治疗该病加味逍遥的2种剂型都值得推荐。Objective: To investigate the difference in therapeutic efficacy between Jiawei Xiaoyao Granules and pills based on the preliminary research of treating emotional disorder during perimenopause with Jiawei Xiaoyao Pills and Greene Climacteric Scale.Methods: 75 female patients with emotional disorder during perimenopause were slected and randomly divided into 3 groups as group A, B and C.Patients in the 3 groups were treated with paroxetine, Jiawei Xiaoyao Pills and Jiawei Xiaoyao Granules respectively for 8 weeks.Greene and Greene factors assessment were carried out in all the patients before and after treatment, and the TESS assessment was carried out at the end of the observation period.Results: The three therapies all could improve the gap in total score of Greene and its factors as anxiety and depressed, and the difference among these three groups was no significant.The factors of Greene and gap in score of vascular factors of group B and C was better than that of group A(P<0.01).The difference in TESS score between group A and group B and C was significant(P<0.01), while the difference between group B and group C was not significant.Conclusion: The difference in curative effect between the two formulations was not significant.Because of the adverse reactions of paroxetine, in the treatment of emotional disorder during perimenopause, the two formulations of Jiawei Xiaoyao Powder were worth to be recommended.国家自然科学青年基金项目(No.81302960)~

OGLE-2019-BLG-1470LABc : another microlensing giant planet in a binary system?

We report the discovery and analysis of a candidate triple-lens single-source (3L1S) microlensing event, OGLE-2019-BLG-1470. This event was first classified as a normal binary-lens single-source (2L1S) event, but a careful 2L1S modelling showed that it needs an additional lens or source to fit the observed data. It is found that the 3L1S model provides the best fit, but the binary-lens binary-source (2L2S) model is only disfavoured by Δχ2 ≃ 18. All of the feasible models include a planet with planet-to-host mass-ratios 10−3 ≲ q ≲ 10−2. A Bayesian analysis based on a Galactic model indicates that the planet is super-Jovian, and the projected host-planet separation is about 3 au. Specifically, for the best-fitting 3L1S model, the two stars have masses of M1=0.57+0.43−0.32M⊙⁠, and M2=0.18+0.15−0.10M⊙ with projected separation of 1.3+0.5−0.5 au, and the planetary mass is M3=2.2+1.8−1.3MJupiter⁠. For the 2L2S model, the masses of the host star and the planet are 0.55+0.44−0.31M⊙ and 4.6+3.7−2.6MJupiter⁠, respectively. By investigating the properties of all known microlensing planets in binary systems, we find that all planets in binary systems published by the KMTNet survey are located inside the resonant caustics range with q ≳ 2 × 10−3, indicating the incompleteness of the KMTNet sample for planets in binary systems. Thus, planets in binary systems cannot be included in the current study of the KMTNet mass-ratio function, and a systematic search for planetary anomalies in KMTNet microlensing light curves of binary systems is needed

山东理工大学非体育专业排球运动开展现状调查

排球运动是中国三大球种唯一获得世界冠军和奥运冠军的项目。高校排球运动不仅是高校体育锻炼的主要形式，同时也是高校体育教学的主要内容。如何提高非体育专业学生排球运动的参与情况，是进一步提高和完善高校体育运动的重要内容。</jats:p