红柱石精矿物相分析研究

本文以红柱石与其共生矿物的组成特点进行试验，确立了精矿样品预先高温灼烧，氢氟酸、硝酸处理，并确定在此条件下的校正系数，以铝量法为基础，准确测定红柱石精矿的含量。     

西峡发现红柱石矿

在西峡县羊乃沟,发现巨晶红柱石,最大的晶体块度为30×5×5公分,是迄今国内已发现红柱石矿晶体最大的产地之一。据少量红柱石样品分析、试验资料:A1_2O_3 51.19—60.35％,SiO_2 37.25—42.06％,Fe_2O_3 1.70一2.36％,TiO_2O.19一O.46％,耐火度1780一1790℃。由于红柱石晶体大,质量好,西峡县外贸局已组织出口,在一九八二年通过广交会外销30吨,一九八三年200吨。在国际市场,红柱石(南非,A1_2O_3 60％)到岸价90一130英镑/吨。红柱石产于震旦系中统小寨组(Z_(2x))的含铝泥质泥砂质变质岩系中,岩性主要     

河南省西峡桑坪粗晶红柱石矿床地质特征及成因分析

本文以西峡桑坪乡杨乃沟红柱石矿床为实例,论述了粗晶红柱石产出地质特征,并对矿床成因作了分析。含矿层属于下古生界二郎坪群小寨组,含矿岩性为含碳质石榴十字红柱石黑云石英片岩,原岩为浅海相沉积的富铝贫钙的粘土质泥质岩,经区域变质后又多次迭加热力接触变质作用,生成粗晶红柱石矿床,矿床主要特征是:矿层力布稳定,矿床规模大,红柱石结晶粗大、大多为自形晶,呈斑晶沿矿层层理分布。矿石物质组分简单,乃是国内罕见,总结矿床特征、探讨矿床成因,为寻找同类型矿床具有重要意义。     

海林市青云山红柱石值得开展地调工作

高级耐火材料的矿物原料方面，我省已拥有著名的鸡西矽线石矿床，而海林、东宁等地的古生界二迭纪板岩类地层万里云母花岗岩接触带的红柱石尚未被人们重视。笔者于20世纪80年代末从事牡丹江地区1：50万地质编图期间，在含腕足类苔藓虫及海百合茎化石的二迭纪地层中采集到一批红柱石样品，[第一段]     

浙东南地区次生石英岩型红柱石成矿地质特征及矿床成因初探

浙东南地区次生石英岩型红柱石矿床为一种新的矿产类型,本文简要地总结该类矿床的地质特征和矿床特征,探讨了成矿地质条件和矿床成因,认为该类型红柱石矿床是由火山岩经火山热液蚀变形成次生石英岩,然后经热接触变质作用,致使部分铝硅酸盐矿物脱水分解形成红柱石矿床.     

河南西峡石界河群的变质作用特征及演化

从原二朗坪群中解体出来的石界河群主要为一套泥砂质沉积建造。根据矿物世代关系及矿物共生组合，可划分出绿泥石－黑云母带、石榴石带、十字石－红柱石带和红柱石－堇青石带四个变质带，其变质作用属低压相系，变质过程中温压演化趋势和变质作用ＰＴｔ轨迹综合研究表明石界河群因秦岭群向北逆冲而被掩埋，在深部发生热松弛而升温，之后又因构造隆起和侵蚀，压力明显下降，但温度则继续保持了一段时间。     

试论河南红柱石宝石的开发利用问题

河南地区产的红柱石(空晶石),晶体粗大,颜色多样,为一处大型优质的红柱石宝石矿床。本文侧重讨论其开发利用问题。主要突出红柱石变种-空晶石具黑十字的特征,并考虑了黑十字正交与不正交都能同样得到利用的问题,提出了一个开发利用的方案,并设计了八种红柱石(空晶石)宝石款式。其中的“双环抱珠”款式,为一宝珠,珠上抱绕两个正交或不正交的圆环,从不同侧面各有不同景观,或显一黑十字,或显一条黑带,或显两条黑带.十分特殊和珍奇。这些款式若参加展销会,相信定能得到欢迎,受到青昧。     

矿石中红柱石含量的化学法测定

运用化学法测定矿石中红柱石含量,关键是溶剂的选择。当矿样中存在黑云母、石榴石、石英等矿物时,可采用NH_4F—HNO_3作选择溶剂,经对试样20次测定,其RSD(%)=5.30%。当矿样中存在有十字石时,可采用NH_4HF_2—HNO_3作选择溶剂,通过十字石和红柱石不溶解率的差异将二者分离开,然后用联立方程和经验公式运算求出红柱石的含量。本法对试样8次测定,其RSD(%)=3.86%。     

河南省西峡红柱石选矿研究通过鉴定

"选矿试验全流程设计科学合理,各阶段试验过程严谨,原生矿选矿技术方面取得突破性进展(红柱石回收率66.9%),达到国内同类研究领先水平,为工业化试验提供了可靠的技术依据".这是近日河南省国土资源厅组织有关专家在郑州就《河南省西峡红柱石选矿》试验研究通过鉴定的结果.     

河南省西峡红柱石选矿研究通过鉴定

“选矿试验全流程设计科学合理,各阶段试验过程严谨,原生矿选矿技术方面取得突破性进展(红柱石回收率66.9%),达到国内同类研究领先水     

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米曲霉中性蛋白酶特性的研究

研究了米曲霉中性蛋白酶的特性。结果表明,米曲霉中性蛋白酶的最佳提取方法为加入pH 7.2的缓冲液研匀,置恒温(30℃)培养箱中提取30 min,每10 min搅动1次,最后用4层纱布过滤。酶反应最适温度为55℃,最适pH值为7.2。NaCl和EDTA对其有一定的抑制作用。酶的热稳定性好,在45℃的温度下处理24 h后,酶活力仍有45.5%。米曲霉中性蛋白酶与培养物一起保存时,稳定性也较好,在4℃保存一个月后,酶活力几乎无变化。     

Preliminary determination of calcium, phosphorus, and the calcium/phosphorus ratio in cortical bone of Chinstrap penguin using synchrotron X-ray fluorescence analysis

Synchrotron radiation X-ray fluorescence （SR-XRF） approach was applied to analyzing of Chinstrap penguin （ Pygoscelis Antarctica） cortical bone. The method enabled the in situ determination of Ca and P concentrations and the Ca/P ratio in cortical bone. The preliminary results show that ： （ 1 ） there is the bone site-related difference for Ca and P concentrations. The mean values for the investigated parameters （ on a dry-weight basis） are： 30.7% （Ca） and 14.9% （P） for the femoral cortical bone, 21.4% （Ca） and 11.5% （P） for wing cortical bone. （2） The variation for the Ca/P ratio in cortical bone is lower than those for Ca and P separately. This is in agreement with the previous report that the specificity of the Ca/P ratio is better than that of Ca and P concentrations and is more reliable for the diagnosis of bone disorders. The authors suggest that further studies be conducted to establish norreal values of Ca, P and Ca/P ratio for polar animals and provide a basis for the diagnosis of bone disorders.     

BDS参考站间低高度角卫星三频整周模糊度解算方法

针对BDS参考站间低高度角卫星整周模糊度受大气延迟误差影响较大、难以正确固定等问题,提出一种BDS参考站间低高度角卫星三频整周模糊度确定方法：首先根据超宽巷整周模糊度长波长的优势确定双差超宽巷整周模糊度,并利用其与双差宽巷组合观测值所受电离层延迟误差较为接近的特性搜索确定双差宽巷整周模糊度;然后将双差整周模糊度之间的线性关系作为约束条件,高高度角卫星双差整周模糊度根据双频无电离层组合模型确定;利用固定模糊度的高高度角卫星建立参考站间双差电离层延迟误差空间线性模型,实现对低高度角卫星电离层延迟误差的削弱;最后将固定双差整周模糊度的高高度角卫星双差载波相位观测方程作为距离约束,进一步搜索确定低高度角卫星的双差整周模糊度。     

Polyploidy induction by hydrostatic pressure shock and embryo development of sea cucumber Apostichopus japonicus

The manipulation of the chromosome set for commercially valuable marine animals is important for enhancing aquacultural production. In this study, triploid and tetraploid sea cucumber Apostichopus japonicus were induced by hydrostatic pressure shock, and the conditions of appropriate induction were tested with different starting times, and hydrostatic pressure intensities and durations. The highest rate of triploid induction reached 20% and that of tetraploid was 60%. In consideration of the survival rate and hatch rate, the appropriate treatment for triploid was 55 Mpa of hydrostatic pressure for 5 min at 55 min after fertilization (a.f.), while for tetraploid it was 60 Mpa for 5 min at 61 min a.f. The triploid of the sea cucumber could survive through the pelagic larval stage and attachment stage, and develop like the control group of the experiment. The tetraploid, however, could not survive the attachment stage.     

Landslide and basin self-organized criticality in the Lushan Hot Spring area

Defining a basin under a critical state(or a self-organized criticality) that has the potential to initiate landslides,debris flows,and subsequent sediment disasters,is a key issue for disaster prevention.The Lushan Hot Spring area in Nantou County,Taiwan,suffered serious sediment disasters after typhoons Sinlaku and Jangmi in 2008,and following Typhoon Morakot in 2009.The basin’s internal slope instability after the typhoons brought rain was examined using the landslide frequency-area distribution.The critical state indices attributed to landslide frequency-area distribution are discussed and the marginally unstable characteristics of the study area indicated.The landslides were interpreted from Spot 5 images before and after disastrous events.The results of the analysis show that the power-law landslide frequency-area curves in the basin for different rainfall-induced events tend to coincide with a single line.The temporal trend of the rainfallinduced landslide frequency-area distribution shows 1/f noise and scale invariance.A trend exists for landslide frequency-area distribution in log-log space for larger landslides controlled by the historical maximum accumulated rainfall brought by typhoons.The unstable state of the basin,including landslides,breached dams,and debris flows,are parts of the basin’s self-organizing processes.The critical state of landslide frequency-area distribution could be estimated by a critical exponent of 1.0.The distribution could be used for future estimation of the potential landslide magnitude for disaster mitigation and to identify the current state of a basin for management.     

Population ecology of the endangered Himalayan Yew in Khokhan Wildlife Sanctuary of North Western Himalaya for conservation management

The Himalayan Yew （Taxus baccata subsp, wallichiana） is an endangered native high value medicinal plant of the Himalayan Region. The several medicinal properties of the bark and leaves of this species have increased its risk of extinction due to pressures for utilization. It is also subjected to harvest for fuelwood. The species does not regenerate well from seed and that is another risk factor. The objective of this research was to investigate the population ecology of the species as a foundation for its conservation. Six forest communities in the Khokhan Wildlife Sanctuary where the species is present were sampled. The abundance of the species, impacts of harvesting and its current regeneration patterns indicate that it may soon be extirpated from the Sanctuary. A plan for conserving the remaining sub-populations is presented. It could provide a template for conservation in other locations where the species is at risk.     

东太平洋赤道公海茎柔鱼生物学特性

根据2013年4~6月在赤道公海探捕期间采集茎柔鱼样本,研究赤道公海茎柔鱼渔业生物学特性。结果表明,不同性别、不同月份,茎柔鱼胴长和体质量组成不同。雌、雄性样本的胴长范围分别为93~495 mm和94~406 mm,优势胴长组分别为260~340 mm和240~320 mm,分别占样本总数72.53%和70.26%;雌、雄性样本体质量范围分别为25~3 900 g和33~2170 g,优势体质量组分别为400~1 200 g和200~1 000 g,分别占样本总数82.71%和87.82%。雌、雄性茎柔鱼净体质量比例分别介于31.69%~80.51%和37.05%~81.35%之间,平均值分别为60.45%和62.73%。协方差分析表明,茎柔鱼胴长与体质量、胴长与净体质量的生长均存在性别间差异,胴长与体质量的生长都最适合用幂函数表示,而胴长与净体质量的生长,雌、雄性样本分别最适合用幂函数和指数函数表示。不同月份茎柔鱼性别比例构成不同,4月、5月和6月性别比例分别为1.87∶1、1.61∶1和1.17∶1,全部样本的性别比例为1.61∶1。不同月份茎柔鱼性腺成熟度的组成不同。不同性别、不同月份间茎柔鱼胃含物等级组成存在差异。     

区域地震地质灾害损失分析系统的开发

介绍基于地理信息系统（GIS）的区域地震地质灾害损失分析系统的开发。顾及不同用户的需求，资料搜集精度可调以适应不同经济水平，设计一组可以模拟减灾效果的功能模块，发展了基于反应谱的建筑物破坏模型，并考虑了场地条件对地震动的影响。