In, Sn, Pb and Zn Contents and Their Relationships in Ore-forming Fluids from Some In-rich and In-poor Deposits in China

All the indium-rich deposits with indium contents in ores more than 100×10^-6 seems to be of cassiterite-sulfide deposits or Sn-bearing Pb-Zn deposits, e.g., in the Dachang Sn deposit in Guangxi, the Dulong Sn-Zn deposit in Yunnan, and the Meng＇entaolegai Ag-Pb-Zn deposit in Inner Mongolia, the indium contents in ores range from 98×10^-6 to 236×10^-6 and show a good positive correlation with contents of zinc and tin, and their correlation coefficients are 0.8781 and 0.7430, respectively. The indium contents from such Sn-poor deposits as the Fozichong Pb-Zn deposit in Guangxi and the Huanren Pb-Zn deposit in Liaoning are generally lower than 10×10^-6, i.e., whether tin is present or not in a deposit implies the enrichment extent of indium in ores. Whether the In enrichment itself in the ore -forming fluids or the ore-forming conditions has actually caused the enrichment/depletion of indium in the deposits？ After studying the fluid inclusions in quartz crystallized at the main stage of mineralization of several In-rich and In-poor deposits in China, this paper analyzed the contents and studied the variation trend of In, Sn, Pb and Zn in the ore-forming fluids. The results show that the contents of lead and zinc in the ore-forming fluids of In-rich and -poor deposits are at the same level, and the lead contents range from 22×10^-6 to 81×10^-6 and zinc from 164×10^-6 to 309×10^-6, while the contents of indium and tin in the ore-forming fluids of In-rich deposits are far higher than those of Inpoor deposits, with a difference of 1-2 orders of magnitude. Indium and tin contents in ore-forming fluid of In-rich deposits are 1.9×10^-6-4.1×10^-6 and 7×10^-6-55×10^-6, and there is a very good positive correlation between the two elements, with a correlation coefficient of 0.9552. Indium and tin contents in ore-forming fluid of In-poor deposits are 0.03×10^-6-0.09×10^-6 and 0.4×10^-6-2.0×10^-6, respectively, and there is no apparent correlation between them. This indicates, on one hand, that In-rich oreforming fluids are the material basis for the formation of In-rich deposits, and, on the other hand, tin probably played a very important role in the transport and enrichment of indium.

Poor rich demarcation of Matthew effect on scale-free systems and its application

In a scale-free network, only a minority of nodes are connected very often, while the majority of nodes are connected rarely. However, what is the ratio of minority nodes to majority nodes resulting from the Matthew effect？ In this paper, based on a simple preferential random model, the poor-rich demarcation points are found to vary in a limited range, and form a poor-rich demarcation interval that approximates to k/m E [3,4]. As a result, the （cumulative） degree distribution of a scale-free network can be divided into three intervals： the poor interval, the demarcation interval and the rich interval. The inequality of the degree distribution in each interval is measured. Finally, the Matthew effect is applied to the ABC analysis of project management.

Narrowing Gap Between Rich and Poor

Inequality in distribution has become an issue of public concern in China. Incomes of the Chinese people have grown year after year ever since the reform and opening era began in the late 1970s. Meanwhile, the income gap between urban and rural residents has widened constantly, from 1.8:1 in the mid-1980s to 3.2:1 in 2003. In a report entitled Analysis and Forecast of China's Social Conditions 2004-2005, experts with the Chinese Academy of Social Sciences listed the widening income gaps as the second most serious of the six problems China is facing. The report notes that such gaps have kept widening not only between individual workers in the same profession but also between workers in different industries and regions. In view of this, the national economic work conference held in early January called for effort to improve the order of income distribution and readjust the distribution of national wealth in an appropriate manner. How to view the problem of inequality in distribution as we see now? How the divide of the rich and the poor affects the improvement of human rights? What should be done to narrow the gap between the rich and the poor? We have dis- cussed these questions with two leading social scientists in China, Sun Guohua, pro- fessor of law at the Renmin University of China and Prof. Hu Angang of Qinghua University, a noted expert in study of the conditions in China.

The Rich Help the Poor

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On the Pain Points and Governance of the Constructionof the Socialist Market Economy in Contemporary China

经过3 0 多年的改革开放,中国的社会主义市场经济建设取得了丰硕成果,成为了中国特色社会主义制度的重要支柱,奠定了建设全面小康社会的坚实基础.但是,随着我国经济步入深化发展与转型调整阶段,市场的优化配置功能在社会管理、公共产品供应等民生问题上出现了越位、缺位等异化现象,引发了官民对立、干群关系紧张、贫富两极分化、社会保障缺失等不和谐问题,严重掣肘了中国社会主义市场经济的健康与持续发展D 为治理上述痛点,论文提出了党要坚持执政为民的治国理念、完善社会考评制度、合理分配社会财富、健全社会保障体系等治理上的一些简单思路,以起抛砖引玉之效.

Neutron-Capture Elements in the Double-Enhanced Star HE 1305-0007： a New s- and r-Process Paradigm

The star HE 1305-0007 is a metal-poor double-enhanced star with metallicity [Fe/H] = -2.0, which is just at the upper limit of the metallicity for the observed double-enhanced stars. Using a parametric model, we find that almost all s-elements were made in a single neutron exposure. This star should be a member of a post-commonenvelope binary. After the s-process material has experienced only one neutron exposure in the nucleosynthesis region and is dredged-up to its envelope, the AGB evolution is terminated by the onset of common-envelope evolution. Based on the high radial-velocity of HE 1305-0007, we speculate that the star could be a runaway star from a binary system, in which the AIC event has occurred and produced the r-process elements.

Species richness and biodiversity significance of alpine micro-waterbody systems in Gaoligong Mountain, Northwest Yunnan, China

Water quality, size, connectivity and other physical properties of hydrological systems might have different functions in the formation and maintenance of biodiversity, but this remains mostly unclear due to the lack of undisturbed sites for experimental modelling. Alpine freshwater habitats such as micro-waterbodies(MWB) represent a kind of natural system suitable for biodiversity research. In order to assess potential linkages between environmental factors, connectivity of MWBs and aquatic species richness, we conducted a pilot study in two separated MWB systems located in Gaoligong Mountain, northwest Yunnan province, China. A total of 27 MWBs have been analyzed, including 22 connected and 5 isolated bodies. 13 conventional environmental factors were tested while all kinds of aquatic macro-organisms were collected and classified. Results showed a high environmental heterogeneity among MWBs and significant differences between the two systems but only a few environmental variables such as the depth of soil bottom, total Nitrogen and altitude were related to species richness and the formation of the community structure. As a benefit from the high environmental heterogeneity, the cascaded MWB systems provided divergent habitats able to support species richness at a higher level than the same number of randomly selected MWBs. This finding supports the idea that habitat connectivity matters also in extremely small aquatic ecosystems. Moreover, although still a preliminary result, a polarization effect within connected chains where edge MWBs host higher taxa and endemic taxa richness as well as larger populations, was detectable. This study gives interesting insights on the spatial processes driving community structure and a new prospective for biodiversity conservation. Since alpine MWBs have significant effects on the maintenance of watershed biodiversity, further research on such small and crucial ecosystems is encouraged.

基尼系数测度贫富差距的一种改进方法

基尼系数是测度贫富差距的重要指标,但是洛伦兹曲线的构造使得基尼系数存在结构性局限,即代表着不同的贫富差距情况的两条洛伦兹曲线可能对应着同一个基尼系数,仅凭基尼系数无法反映贫富差距的结构特征。文章提出将洛伦兹曲线上切线斜率为1的点叫做平均增长点,每条洛伦兹曲线有且仅有一个平均增长点,洛伦兹曲线切线斜率具有单调性,可以通过引入平均增长点,与基尼系数共同测度贫富差距,突破单纯依靠基尼系数测度贫富差距的结构性局限。

Genetic causes of oil-rich and oil-poor reservoirs: Implications from two Cenozoic basins in the eastern North China Craton

The Bohai Bay and Hehuai(southern North China) rift basins in the eastern part of the North China Craton are southnorth-adjacent. They have shown synchronous evolutionary processes, and possess generally identical superficial and shallow structural characteristics as well as similar basin areas. However, there is a large difference in the richness of oil resources between the two basins. The Bohai Bay Basin has extremely abundant oil reserves, while commercial oil reserves have not been found in the Hehuai Basin. The deep tectonic structures, magmatic activities, and modern and paleo-geothermal fields of the two basins are significantly different. Compared with the Hehuai Basin, the Bohai Bay Basin has a thinner crust and more complex structure with multiple low-velocity layers. It is also characterized by intense magmatic activity, high modern and paleogeothermal fields, frequent seismic activity, and active deep interactions, small effective elastic thickness of the isotropic lithosphere, and shorter balanced transformation wavelength of the lithosphere with a high likelihood of local compensation. The Hehuai Basin has a simple deep structure and homogeneous crustal composition, with a high likelihood of regional compensation. The characteristics of the deep structures mentioned above are generally similar to those of the southern part of the stable Ordos Basin, except for the smaller crust thickness. This indicates the presence of differences in Mesozoic destruction between the southern and northern zones in the eastern part of the North China Craton. The northern zone was subjected to significant destruction, while the southern zone was subjected to modifications, primarily in the form of local changes in the structures and/or properties of the crust or lithospheric mantle, with the overall structure and stability of the craton kept intact. The formation of high-quality source rock is primarily influenced by the abnormal flourishment of organisms in water bodies during the syndepositional period, and is also strongly associated with the high geothermal setting of basins and nutrients from hydrothermal solutions and volcanoes. In other words, it is mainly controlled by deep processes and deep-major fault activity. The differences in the deep structures and modern and paleo geothermal fields of the two basins correspond to the difference in richness of oil resources, suggesting that there is an important internal or causal relationship between the two aspects. This viewpoint coincides with the conditions and environments required for the development of high-quality source rock in hydrocarbon-rich basins(sags)in China and other countries, and is evidenced by the modern lake basin of the East African Rift. A new hydrocarbon generation model is proposed in this work: petroleum is a comprehensive product of the integration of bioenergy, thermal energy, and other related energies(such as chemical and kinetic energy) and their interactions; the degree of richness of petroleum is generally controlled by the regional tectonic structure, thermal environment, and deep processes; nonmarine basins or depressions with abundant resources are closely related to active deep processes, intense exchange of material between the deep and shallow layers, participation of external hydrocarbons, and energy integration and conversion.

主佃借贷与贫富相资——对宋代契约租佃制下富民借贷的探讨

宋代是我国古代民间借贷关系空前发展的重要时期。随着富民阶层的崛起和契约租佃主导地位的确立,民间借贷关系与契约租佃关系的结合表现得越来越紧密,有效地实现了生产要素的优化配置,逐渐成为当时重要的制度选择和制度安排。而宋政府也逐渐认识并重视这一点,利用主佃借贷来实现贫富相资,促进了乡村经济的稳定和发展。

Co_(3)O_(4)@碳纤维诱导贫/富电子中心活化PMS高效降解2,4-二氯酚

【目的】工业快速发展导致水体中氯酚类污染物含量上升,对生态系统和人类生存发展造成影响,高效降解工业废水中难降解污染物2,4-二氯酚(2,4-DCP)成为。【方法】通过一步浸渍法制备了具有贫/富电子活性中心的Co_(3)O_(4)包覆碳纤维催化剂(Co_(3)O_(4)@CF),并应用于活化过硫酸盐降解2,4-DCP研究中。【结果】研究结果表明,Co_(3)O_(4)被均匀的涂覆在具有规则骨架结构的碳纤维表面,在Co(Ⅱ)-π的相互作用下形成了富电子钴中心和贫电子碳中心。在pH值为3.0~7.8,2,4-DCP的质量浓度为50mg/L,Co_(3)O_(4)@CF质量浓度为0.1g/L,PMS浓度为10mmol/L的初始条件下,Co_(3)O_(4)@CF在20min内可实现2,4-DCP的完全降解。在此过程中,Co_(3)O_(4)@CF可诱导反应体系中电子从贫电子中心向富电子中心转移,实现Co_(3+)的快速还原和PMS的快速活化。表征结果也进一步证明,碳纤维不仅可以作为载体,还可以通过其结构缺陷参与过硫酸盐活化的链式自由基反应,从而促进SO_(4)^(-)·转换为1O_(2)和O_(2)^(-)·,达到高效降解2,4-DCP的目的。

Rejuvenation of Ovary and Thin Endometrium by Autologous PRP Injection in POR and Recurrent Implantation Failure

In India, the problem of infertility is growing and in the last 5 years, it has gone up to 20% - 30%. This ongoing prospective clinical study brings forth a novel, innovative, effective, simple, affordable, easily performed outpatient procedure (OP) and a promising therapeutic method in rejuvenating the Ageing Ovaries and Thin Endometrium, with autologous Platelet Rich Plasma (PRP). This clinical study proves to give a better result in rejuvenating Ovary and treating the Thin Endometrium. This pilot study included five women (28 - 44 years) with Poor Ovarian Response (POR), Premature Ovarian Insufficiency (POI) and Perimenopause and Thirty-nine women (22 - 43 years.) with recurrent implantation failure due to Thin Endometrium were subjected to autologous PRP instillation under Ultrasound Guidance, and Hysteroscopic guided PRP. After PRP, a significant output was obtained, with improved Anti Mullerian Hormone (AMH) and Antral Follicle Count (AFC) and out of five women three women conceived by Intra Cytoplasmic Sperm Injection (ICSI). PRP injected in women with Poor Ovarian Response found successful ovarian rejuvenation within 1 - 3 months and had a 60% of pregnancy rate, PRP into the endometrium had 53.8% successful pregnancies. We have not encountered any complications.

富血小板血浆在生殖医学领域应用的研究进展

富血小板血浆(PRP)是一种高浓度血小板血浆,被应用于临床多个学科,本文旨在总结和评价PRP在生殖医学领域的作用,包括薄型子宫内膜、反复着床失败(RIF)、慢性子宫内膜炎和卵巢功能低下等方面,期望为PRP在生殖领域的临床治疗及未来的科学研究提供参考。

技术之殇:两宋时期的农业减灾技术与救荒制度

以农学、工学和生物防治技术为代表的农业减灾技术,在两宋灾荒救济中发挥着无可估量的作用但在官府救荒实践中,技术之外的蠲阁、灾赈等制度手段仍居于最核心和最根本的地位。一方面,传统农业减灾技术的革新过于缓慢,难以适应实际减灾需求;另一方面,减灾技术的革新与推广需要官府力量的推动,而两宋地方官员在此间所扮演的角色,更显得力不从心。劝农之制虽然为技术传播提供了一个制度平台,但传统官僚的劝农之为,更侧重于伦理教化之功,弱于技术的推广应用。当然,技术手段在传统救荒中的弱化,不仅仅是因为传统农业技术落后尚不能担当其救济灾荒的重任,更在于宋代贫富分化,土地兼并的现实。时势要求,宋代政府必须着眼于通过调节财富的分配,来缓解、消弭灾荒易造成动乱的社会危机。

普惠保险、人力资本投资与贫富差距

尝试构建包含普惠保险、人力资本投资与贫富差距的柯布道格拉斯生产函数研究框架,分析普惠保险通过人力资本投资缩小贫富差距并助推共同富裕的作用渠道与影响效应;基于熵权法构建普惠保险指数并结合中介效应模型,实证检验普惠保险的就业效应与人力资本投资、增收效应与贫富差距间的相互关系。研究发现:普惠保险促进人力资本投资是缩小贫富差距并助推共同富裕的重要机制;普惠保险的公平性和市场性降低金融服务门槛,增加教育和技能培训机会,提高就业竞争力,产生就业效应;普惠保险的保障性与政策性有利于减少教育投资失败风险,增加居民教育投资意愿,提高教育投资回报率,产生增收效应;人力资本投资强化了普惠保险缩小贫富差距并助推共同富裕的作用;普惠保险对贫富差距的影响因教育投入水平不同而存在明显差异。对普惠保险的多维增收效应研究发现:普惠保险对低收入家庭相对收入与生活水平均有显著的正向作用。进一步研究发现:当教育投入与受教育水平越高时,普惠保险缩小贫富差距的影响更显著。

下扬子宣城地区二叠系孤峰组页岩气勘查方法研究

针对下扬子宣城地区复杂地质条件下二叠系页岩气勘查难度大的问题,基于岩石物性测试,运用高精度重力、高精度磁法、复电阻率法(CR法)进行联合勘查,探讨复杂地质条件下有效的页岩气勘查方法。研究表明:宣城地区孤峰组页岩具有“弱磁、低密度、中低阻、高极化”特征,含炭硅质页岩具有明显的低电阻率、高极化率特征,主要影响孤峰组的侵入岩体(花岗斑岩)具有“弱磁、低密度、低阻、低极化”特征。在宣城地区魏墩一带孤峰组页岩气勘查过程中,应用高精度重力、高精度磁法寻找弱磁、低重力地区,推断岩体分布情况;然后在岩浆岩不发育区布设CR法剖面,选择低电阻率(小于1000.00Ω·m)、高极化率(大于4.00%)的位置来布设钻井进行验证,共钻遇视厚度达50.89 m孤峰组含炭硅质页岩、硅质泥岩,取得了良好的应用效果。研究内容对宣城地区乃至下扬子复杂地质条件区富有机质页岩层段识别和页岩气“甜点”区优选具有重要的指导意义。

The Profound Changes Unseen in a Century: The Perspective of Overlapping Effect of Technological Revolution Cycle and Political & Economic Thought Cycle

The waves of technological revolution can lead to great differences in the economic and social structures of countries and have a destructive impact. The choice of political and economic thoughts can amplify or inhibit such differentiation and impact. Over the past 100 years, humankind has undergone three technological revolutions, and the mainstream political and economic thoughts have experienced a cycle from classical liberalism to various types of anti-liberalism and finally to neoliberalism. In the two liberal periods, the overlap of liberalism and a technological revolution caused sharp contradictions between the rich and the poor, leading to profound economic adjustment and great political and social turmoil worldwide. In the non-liberal period, however, the overlapping effects were relatively mild. Currently, the world is facing similar trends and risks as during 1914-1940. Whether humankind will repeat the same mistakes merits attention and vigilance. This study argues that it is necessary to oppose unilateralism, uphold multilateralism, and advance globalization and free trade under the concept of collaborative development and shared prosperity, as well as explore comprehensive and sustainable development. These are of great significance for human society to prevent risks, obtain advantages and avoid disadvantages, and maintain world peace and development.

富血小板血浆与贫血小板血浆治疗中华眼镜蛇细胞毒素致小鼠皮肤溃疡的效果比较

目的 比较富血小板血浆(PRP)与贫血小板血浆(PPP)治疗中华眼镜蛇细胞毒素致小鼠皮肤溃疡的效果。方法 将中华眼镜蛇细胞毒素造模成功的30只中小鼠随机分为对照组(n=10)、PRP组(n=10)、PPP组(n=10),造模后第9天各组分别给予单纯生理盐水、PRP、PPP治疗,比较3组小鼠皮肤溃疡面积、溃疡创面愈合率、创面面积差绝对值与HE染色的病理改变。结果 低速组的PRP、PPP符合工作浓度标准。PRP凝胶、PPP凝胶治疗小鼠溃疡愈合时间可缩短3 d。PRP组与PPP组创面愈合率及3 d内面积差绝对值均大于对照组(均P<0.05)。镜下见PRP凝胶、PPP凝胶可减少炎症细胞浸润,促进小鼠上皮细胞再上皮化等病理改变。结论 PRP凝胶、PPP凝胶均可促进中华眼镜蛇伤溃疡皮肤修复,缩短愈合时间。

贫富差距歧视与主观幸福感

生活幸福感是经济增长进一步推进的必然追求。本文利用中国家庭追踪调查(CFPS)2014年的数据,探究由贫富差距造成的歧视经历对居民主观幸福感的影响。研究表明,贫富差距歧视显著降低了居民的主观幸福感,在经过内生性处理及一系列稳健性检验后,该结论仍然成立。在异质性分析方面,不平等感知会加剧歧视对幸福感的冲击,而地位认同会在一定程度上缓冲歧视对幸福感的危害;在机制分析方面,本文验证了贫富差距歧视通过影响社会信任和心理健康两条路径来降低主观幸福感。本文从个人歧视经历的角度出发,为贫富差距与主观幸福感的联系提供了更为丰富的证据。