云南省陇川县浪达山-敢共山离子吸附型稀土矿床成矿条件及找矿前景探讨

云南陇川县浪达山-敢共山离子吸附型稀土矿床成矿母岩为白垩纪-始新世(似斑状)黑云母二长花岗岩。矿体赋存于全风化花岗岩及强风化花岗岩中,平面上呈面型展布;垂向上呈层状、似层状产出,具“弓背式”、“浅伏式”分布特征;属富镧钕低铕低钇的离子吸附型轻稀土矿床。区内花岗岩风化壳较发育,厚度大、含矿性好,具有较好的花岗岩风化壳离子吸附型稀土矿找矿前景。

教育公平视角下浙江省城乡教育资源共享发展路径——基于“山海协作教共体”模式的研究

为了促进义务教育优质均衡发展,缩小城乡教育差距,以浙江省26个加快发展县为例,综合分析“山海协作教共体”模式下浙江省城乡教育资源共享发展现状,深入研究城镇地区学校教育发展模式。分析认为,以立足教育过程公平、巩固乡村教师队伍建设、促进校与校共享常态化、加大乡村教育资金投入、优化乡村学校生源体系为内容建立教育质量检测制度,能够有效促进教育公平,推进教育资源共享的实现。

清水江流域林业经济制度史研究的几个问题——清水江文书·林契研究之三

清水江流域林业经济时代林地产权研究已有成果仍可商榷:对林业生产体量的分析说明其林业生产呈现出的小林农经济特征,证实建立在"大规模生产"上的"家族共有制"与广泛使用佃农的结论是不可靠的;对清水江文书中林契内"共山""股分"术语及对"共山股分"从实践方面的历史考查证实,都不能确定其为制度性的"共有"性质;清水江流域不存在着"家族共有制"与"家庭私有制"非此即彼的极端形式,也非均衡的混合占有形式;林业经济从一开始生产关系就呈现出个体家庭为主导的林地权及向个人集中的产权趋向。

The changes of co-possession of plant species between communities with altitudes on northern slope of Changbai Mountain

Twenty plots were investigated on northern slope of Changbai Mountain at an attitude interval of 100 m (from 700 to 2600 m). The species co-possession between plant communities at different altitudes was analyzed by Jaccard index. The analytical results showed that the co-possession calculated according to species in different layers or all species between adjacent communities was higher than that between disjunct communities. The co-possessions between adjacent communities calculated by species in different layers had comparability and dissimilarity. If the two adjacent communities belong to different types of vegetation, then their co-possession was lower. The peak values and valley values of species co-possession between communities along elevation gradient just matched vegetation gradient patterns, and species subrogation of shrubs had more obvious rule on northern slope of Changbai Mountain. Co-possessions between communities with same altitude difference were much similar, and it decreased as the increase of elevation difference, which showed that species compositions in different layers of the communities were highly related.

济水源头之谜探析(一)

从文献记载、地质考古、历史演变等多方面对济水源头问题提出新的解答。研究结果表明《山海经》"济水出共山南东丘"是对史前济水的客观真实记载,共山指济源盆地北缘的太行山,东丘指济源盆地内北东走向拦蓄水流的高丘,史前古济水发源于共山南东丘的济源古湖盆,水量巨大且水清沙少,与盆地南缘的黄河相互分隔、各自独立,形成独立的济水源头水系。同时,对济水源头与沁河、沇水、氵聯水的关系以及济水源头从共山南东丘的济源古湖盆到济源城西北的东西二源的演变过程进行了分析。

济水源头之谜探析(二)

济水源头问题错综复杂,大体有王屋山说、东西二源说以及黄河说。这些说法似乎都有依据,然而细究起来,却并没有科学地描述出济水史前的模样。《山海经》中提出"济水出共山南东丘"的说法,值得玩味。这绝不是远古的神话传说或作者的主观想象,而是史前济水的客观真实记载。考察当地的地质特点,可以认为共山就是济源盆地北缘的太行山,而东丘则是济源盆地内北东走向拦蓄水流的高丘。综合分析济源一带的地质地貌,古济水可能发源于"共山南东丘"的"济源古湖盆"。

Effects of co-existing microalgae and grazers on the production of hemolytic toxins in Karenia mikimotoi

Karenia mikimotoi （Miyake ＆ Kominami ex Oda） Hansen ＆ Moestrup is associated with harmful algal blooms in temperate and subtropical zones of the world. The hemolytic substances produced by K. mikimotoi are thought to cause mortality in fishes and invertebrates. We evaluated the composition of the hemolytic toxin produced by K. mikimotoi cultured in the laboratory using thin-layer chromatography. In addition, we evaluated the effect of co-occuring algae （Prorocentrum donghaiense and Alexandrium tamarense） and the cladoceran grazer Moina mongoliea on hemolytic toxin production in K. mikimotoi. The hemolytic toxins from K. mikimotoi were a mixture of 2 liposaccharides and 1 lipid. Waterborne clues from P. donghaiense and A. tamarense inhibited the growth of K. mikimotoi but increased the production of hemolytic toxins. Conversely, K. mikimotoi strongly inhibited the growth of caged P. donghaiense and A. tamarense. In addition, the ingestion of K. mikimotoi by M. mongolica induced the production of hemolytic toxins in K. mikimotoi. Taken together, our results suggest that the presence of other microalgae and grazers may be as important as environmental factors for controlling the production of hemolytic substances. K. mikimotoi secreted allelochemicals other than unstable fatty acids with hemolytic activity. The production of hemolytic toxins in dinofiagellates was not only dependent on resource availability, but also on the risk of predation. Hemolytic toxins likely play an important role as chemical deterrents secreted by K. mikimotoi.

Determinants of Public Goods Investment in Rural Communities in Mountainous Areas of Sichuan Province, China

This study aims to investigate two important issues: what are the determinants of public goods investment and what is the government's investment behavior in mountainous areas. The impacts of natural conditions, target, and demand elements on public goods investment are analyzed with statistical method, and the determinants of public goods investment in the areas are obtained by using population-weighted and stepwise regression models with Eviews6.0 software with survey data in 2008 and calculated data based on GIS of 20 typical villages in mountainous regions in Sichuan, China. The results showed:(1) natural conditions are the important determinants of public investment. Mountainous villages with steep slope have relatively high levels of investment;(2) concentration of population and the educational levels of the village leaders also have important impacts on public goods investment;(3) the government is more concerned with public investment resources particularly in areas characterized by fragile ecological environment and poor agricultural output. These results suggest that the current investment strategy helps to reduce disparities in regional development.

Rainfall,Landslide and Debris Flow Intergrowth Relationship in Jiangjia Ravine

Jiangjia Ravine is a world-famous debris flow valley in Dongchuan,Yunnan Province,China.Every year large numbers of landslides and collapses happened and caused enormous damages to people's properties and lives.With longtime observation and testing in Jiangjia Ravine we had found out one kind of special landslide which had the characteristics of landslide and collapse.Landslide and collapse supplied sufficient materials for debris flow.When a debris flow broke out,some kind of intergrowth existed among rainfall,landslide and debris flow.In order to study the intergrowth and some key parameters,we carried out artificial rainfall landslide tests and model experiments to observe the phenomena such as collapse,surface slide and surface flow.By observing the experimental phenomena and monitoring water contents,the transformation process among landslide deposits and debris flow under the condition of rainfall had been analyzed.Research results revealed the relationship of this kind of intergrowth among rainfall,landslide and debris flow in Jiangjia Ravine.Meanwhile,it was found that this kind of intergrowth relationship existed only when the moisture content was in a certain range.That is,the critical state seemed to be existed in the transformation process.

Life Strategy Traits of the Liana Sericostachys scandens Spreading in the Montane Forests in the Kahuzi-Biega National Park (DR Congo)

Sericostaehys seandens is a monocarpic and heliophilous liana, native in tropical African forests. In the montane forests of the Kahuzi-Biega National Park （KBNP） （East of DR Congo）, it has been expanding very strongly for a decade, and is currently considered as having negative impacts on biodiversity conservation. In this paper, we test if S. scandens differs from three co-occurring, native, non spreading lianas （Gouania longispicata, Tacazzea apiculata and Adenia bequaertii） for functional traits which might influence plant expansion. For leaf traits （SLA, dry matter content, nitrogen concentration）, S. scandens did not show extreme values compared to those of the three other lianas. In contrast, S. scandens had much higher biomass allocation to sexual reproduction. It also differs from the three other lianas for its reproductive strategy that combines both vegetative propagation and sexual reproduct/on, and propagule dispersal by wind. Moreover, S. scandens has larger leaves and a greater number of lateral branches per unit stem length. It is argued that the particular combination of functional traits exhibited by S.scandens may in part explain its propensity to behave as an opportunistic weed in the disturbed areas in the montane forests of Kahuzi-Biega.

Patterns and security technologies for co-extraction of coal and gas in deep mines without entry pillars

Retaining gob-side entryways and the stability of gas drainage boreholes are two essential techniques in the co-extraction of coal and gas without entry pillars （CECGWEP）. However, retained entryways located in deep coal mines are hard to maintain, especially for constructing boreholes in confined spaces, owing to major deformations. Consequently, it is difficult to drill boreholes and maintain their stability, which therefore cannot guarantee the effectiveness of gas drainage. This paper presents three measures for conducting CECGWEP in deep mines on the basis of effective space in retained entryways for gas drainage, They are combinations of retaining roadways and face-lagging inclined boreholes, retaining roadways and face-advancing inclined boreholes, and retaining roadways and high return airway inclined boreholes. Several essential techniques are suggested to improve the maintenance of retained entryways and the stabilization of boreholes. For the particular cases considered in this study, two field trials have verified the latter two measures from the results obtained from the faces 1111（1） and 11112（1） in the Zhuji Mine. The results indicate that these models can effectively solve the problems in deep mines. The maximum gas drainage flow for a single hole can reach 8.1 m^3/min and the effective drainage distance can be extended up to 150 m or more.

Synthesis and Characterisation of Sorbitol Based Copolyesters for Biomedical Applications

In this investigation we report on the synthesis and characterisation of certain polyester elastomers namely as Poly（Sorbitol succinate-co-ethylene glycol succinate） （PSSEG）, Poly（sorbitol succinate-co-butane diol succinate） （PSSBD） and Poly（sorbitol succinate-co-hexane diol succinate） （PSSHD） by carrying out catalyst free melt polycondensation.. The synthesised polyesters were characterised by solubility, FT-IR, -H NMR and 13C NMR spectral methods. The thermal properties were analysed by differential scanning calorimetry and thermogravimetric analysis. The mechanical properties evaluated for the polyester films in the tensile mode shows that the polymer has characteristics of elastomers and stiff thermosets. We demonstrate that the chemical structure, physical integrity and mechanical property of synthesized copolyester can be controlled by simply changing the monomers and suit them for the requirements of various biomedical and soft tissue engineering applications.

颛顼大帝

颛顼是黄帝之孙,二十岁即位,定都帝丘,耜耕农业得到进一步发展,制陶、冶铜都得到极大发展。黄帝战败蚩尤后,部落融合加强,共工氏败后,颛顼拓宽了疆域,阶级分化明显,采取了一些加强部落军事贵族统治权力,他还很讲究礼法,勤于修德,善于治国,司马迁对他有很高评价。

Residents'Satisfaction with Public Services in Mountainous Areas:An Empirical Study of Southwestern Sichuan Province,China

Abstract： Enhancing the efficiency of public services is essential to residents in mountainous areas. It is also important to promote sus- tainable development of these regions. Analysing residents＇ satisfaction with public services in mountainous areas can help in evaluating outcomes of fiscal investment and identifying potential coping approaches for improving public service efficiencies. The residents＇ satisfaction with public services and the factors that influence such satisfaction were examined in this study. A study of 12 towns located in the southwestern Sichuan Province was performed using an entropy-weighted analytic hierarchy process （EWAHP）, the technique for order preference by similarity to ideal solution （TOPSIS） and Tobit regression methods. The results indicate that： 1） the spatial distribu- tion of satisfaction with public services is non-uniform, and the spatial distribution structure varies for different types of public services. 2） Residents＇ satisfaction with public services is influenced by both objective and subjective factors. Population density, economic dis- tance, social and cultural divisions and elevation are the major objective factors, whereas bounded rationality, the hierarchy of needs and service expectations are the main subjective factors. The most effective strategies for enhancing residents＇ satisfaction with public ser- vices are likely to be clustering the population, choosing supply centres with different public services, regulating the cultural division in ethnic minority towns, selecting supply priorities in accordance with residents＇ needs, implementing targeted intervention policies and establishing ＇bottom-up＇ and ＇top-down＇ integrated decision-making mechanisms. Keywords： mountainous areas; public services; residents＇ satisfaction; entropy-weighted analytic hierarchy process （EWAHP）; technique for order preference by similarity to ideal solution （TOPSIS）; Tobit regression; southwestern Sichuan Province

Standardization Promotes the Construction of Shandong E-government Resource Sharing

Standardization is the basis of e-government construction which aims to link organically government affair systems of different departments through standardized method and provide technical guidelines and specifications for collaborative work in all affair aspects. Standardized coordination and optimization can help to guarantee the safety and reliability of e-government construction and promote efficiency. This article discusses the achievements, existing problems and experience of Shandong e-government standardization.

Airborne Fungal Spores of Subalpine Zone of the Karkonosze and Izerskie Mountains(Poland)

The incidence of the airborne fungal spores was determined in the air of subalpine zone of the Karkonosze Mountains and of the Izerskie Mountains in the borderland between Poland and the Czech Republic. The experiment was conducted in2011 and 2012 at three to four week intervals from May to October. Air samples were taken from three locations in the Karkonosze Mts. and one from the Izerskie Mts. To examine the air, the Air Ideal 3P sampler and acidified PDA medium were used. The results show that Cladosporium cladosporioides was the most abundant spore type in all the sampling locations(up to 30%), followed by Alternaria alternata(16%–20%), Fusarium(up to 10%) and Sclerotinia sclerotiorium(up to 6%). The lower spore counts were recorded in May samples, compared to the other months. In this case the snow cover, that was still present in the area at the beginning of May,may be the reason for the lower, compared to June,July and August samplings, CFU(Colony Forming Unit) counts in that month.. The influx of air masses from SE, S and SW sectors in the area under study may affect dissemination of the plant-pathogenic fungi from the Czech Republic and from the South of Europe in general.

Research on Ecological Protection and Restoration Measures in Altay Region based on the Coupling Perspective of the Mountains-Rivers-Forests-Farmlands-Lakes-Grasslands System

The adoption of both Nature-based Solutions(NbS)and a system perspective is a hot issue and an area in which there is much room for improvement in ecological protection and restoration.The study takes Altay region as an example,an area located in Xinjiang,China,which is an important ecological corridor of the national key functional area and the core area of the Belt and Road but has a fragile ecological environment and needs much enhancement in ecological protection and restoration.Guided by the concept of"mountains-rivers-forestsfarmlands-lakes-grasslands(MRFFLG)system is a life community",the coupling relationship of the various MRFFLG elements,the main ecological environmental problems and the integrated countermeasures for protection and restoration in Altay region have been analyzed in this study.The study shows that Altay region has a typical meta-ecosystem of mountain,oasis,and desert,and the connections by rivers and lakes make the ecosystem links within the region much closer.The interweaving of resource-environmental-ecological issues of the aquatic ecosystem,degradation of the quality of terrestrial ecosystems such as forests,grasslands and farmlands,the increased ecosystem fragmentation and ecological risks are the major ecological environmental issues in this region.This study takes the improvement of the ecosystem health and function in Altay region as the core goal of regional ecological protection and restoration.First,we establish a zoning governance pattern from the perspective of ecosystem integrity;second,we design governance strategies for different zones with the goal of synergistic improvements in the ecosystem functions;and finally,we clarify the key engineering tasks in different zones from the perspective of ecosystem services.Ecological conservation and restoration of the MRFFLG system is a prime example of the application and development of NbS in China.This paper constructs an analytical framework for identifying regional life communities,diagnosing ecological protection and restoration of zoning problems,and proposing classified solutions for ecological protection tasks for the protection of the MRFFLG system.This research will enrich the theory and technology for the protection and restoration of MRFFLG systems,and provide guidance for the practice of ecological protection and restoration in Altay region.

The Spatio-temporal Evolution and Influencing Factors of Common Prosperity Level in the Wuling Mountain Area

As China successfully won the tough battle against poverty,advancing common prosperity on all frontshas gradually become an important task in realizing Chinese modernization.The evaluation index system forcommon prosperity is constructed of four dimensions of“affluence,sharing,commonality,and sustainability”,andthe Entropy weight-TOPSIS method,Theil index,and Multiscale geographically weighted regression are applied toanalyzing the spatio-temporal evolution and influencing factors of common prosperity level in the Wuling Mountainarea.The results show that the level of common prosperity in the Wuling Mountain area was low but slowly increased from 2011 to 2021.The spatial development pattern of common prosperity in the Wuling Mountain areashows an evolutionary trend of being“fast in the north and east,and slow in the south and west".The core countieshave a positive spillover effect on the neighboring counties.The overall gap in the level of common prosperity in theWuling Mountain area displays a trend of“weakly fluctuating and slightly declining”,with the main source of development differences within the Hunan region.Each factor shows various impact intensit on the level of commonprosperity in the Wuling Mountain area and its fluctuation directions at different times.Among these factors,GDPper capita has the strongest impact and always plays a positive role.The conclusions of this study can provide atheoretical basis and scientific reference for the less developed regions to effectively articulate rural revitalizationand realize common prosperity.