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Carlin is where gold mining began for Newmont. In 1961, Newmont geologists began probing the high desert area around the Tuscarora Mountains in search of finely disseminated gold - gold that could be seen only in a microscope and, thus, had eluded earlier prospectors.

历史概述 Carlin是纽蒙特金矿的发源地。1961年,纽蒙特的地质人员开始在Tuscarora山四周的高沙漠地带寻找细颗粒浸染型金—一种极为细小,只有用显微镜才能看见的金子,所以以往的勘探人员都未能发现。1963年夏季通过钻孔和化验划定了一个 300万盎司的矿床,即使当时的金价每盎司只有35美元,该矿山也具有开采价值。

During the technology of Zincite produced by direct process from the Zinc Sulfide mineral concentrate in high elevation area,the characteristic of the impurities,distribution was different from that of the technology under usual condition.

根据硫化锌精矿在高原地区用直接法生产氧化锌的工艺中,杂质元素走向与正常状况下不同的特点,文章研究了该工艺的不同操作参数对产品质量的影响。

Chromium and iron oxide supported silica-pillared zirconium phosphates with high surface area have been prepared successfully by the new method as well.

2同样采用先负载后再焙烧的方法,制备了大比表面负载氧化铬和氧化铁的氧化硅层柱磷酸锆,进一步表明此方法具有一定的普遍意义。

Zirconium containing MCM-41 molecular sieves with high surface area, good crystallinity and Si / Zr ratio from 20 -∞ were synthesized in a near neutral condition by using a sodium silicate as silicon source and a zirconyl nitrite as zirconium source.

MCM - 41与传统分子筛比较,最突出的特点是具有 1~ 5nm直径的孔道和 1 0 0 0m2 ·g- 1 左右的比表面,如此宽孔道尺寸的固体材料对于大分子的吸附和催化具有潜在的应用前景[1 - 3] 。

In this study, we developed the ammonia sensing material by using MCM-41 impregnated with bromocresol green. MCM-41 is one kind of mesoporous molecular sieves. It can be applied to many fields due to well-defined pore shapes, narrow distribution of pore sizes, large pore volumes, high surface area, excellent thermal, hydrothermal, chemical and mechanical stability. And the bromocresol green dye is commonly used as a pH indicator with colorimetric from pH 3.8 to pH 5.4.

本研究之目的是结合变色染剂及中孔洞分子筛MCM-41进行氨气吸附,研究中所选择之变色染剂溴甲酚绿是一种偏酸性之大分子有机染剂,其变色范围在pH 3.8到pH 5.4;而MCM-41由於其孔洞大小分布范围狭窄、孔洞体积大、高比表面积、具有良好的吸附容积、表面反应性强及易於改质等优点,故期望利用此复合材料,经气体吸附达到氨的移除并同时在吸附饱和前能产生显色效果。

There are some grass seeds recommended for ecological restoration , for example, Kentucky bluegrass, ryegrass, coronilla, festuca arundinacea, sword-bamboo and euonymus fortunei.3Regarding JBA,YQS, and CXL fertilizer as addition agent of the ecological material, magnetic fertilizer as ecological fertilizer, the material take on character such as water holding capacity, fertilizer retaining, prime cluster structure and binding power, which realize the destination of ecological protection of the abrupt rock slope.4Ecological material protection slope techniques, which is suitable for abrupt rock slope in high-cold area, has been formed elementarily.

高寒地区生态护坡的草种应选用具有抗寒、抗贫瘠和适宜粗放管理的冷季型草种,推荐使用的川西高寒地区生态护坡植物种属为:草地早熟禾、黑麦草、小冠花、高羊茅的草种组合,剑竹灌木种,以及小叶扶芳藤藤蔓植物种。(3)适当配比的高分子材料JBA、YQS和生态肥料CXL作为生态基材的添加剂可使基材具有保水、保肥、优质团粒化和粘结性能,从而达到生态护坡的目的。(4)开发了JYC生态护坡基材,初步形成了一套适合川西高寒地区岩质陡边坡生态基材防护的技术方法体系。来源:Ac9BC论文网www.abclunwen.com

Pitch is a kind of thermoplastic material. It needs to be treated into infusible material as raw material of prepared micro-pore carbon of high surface area.

煤沥青是一种热塑性物质,作为制备高比表面积微孔炭的原料需要进行不熔化处理。

The aim of the research was to discuss the effects of planting Medicago sativa L.on the soil nutrients in high-cold area.

方法通过田间试验,研究在高寒地区种植紫花苜蓿后其土壤中有机质、氮素、磷素、钾素等养分的变化情况。

HIFU surgery, which resorts to focus energy of ultrasound beam on a small area in the pathological tissue, is a Minimally Invasive Surgery, and has achieved the sanatory effect via the solidified putrescence generated in the pathological tissue without recoverability.

高强度聚焦超声(High-Intensity Focused Ultrasound,HIFU)外科治疗技术是将超声能量汇聚到病变组织中的一个较小区域内,使病变组织发生不可逆的凝固性坏死从而到达治疗效果的一种微创技术,是当前国内外超声治疗领域研究的一个热点前沿课题。

A novel carbon-sulfur nano-composite as cathode for lithium battery was synthesized by heating sublimed sulfur and high surface area activated carbon in certain conditions.

用该复合材料作为正极活性物质所制备的锂蓄电池具有较好的循环性能和高的比容量、比能量。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。