西藏热昌金矿地质及物探化探特征

西藏洛隆县热昌金矿为近年来在那曲—洛隆弧前盆地新发现的贵金属矿点。运用地质、物化探等勘查手段,圈定35个单元素异常,5个综合异常带;发现8条金矿化体,矿(化)体金品位0.315×10~(-6)～1.75×10~(-6),单样金品位最高达4.63×10~(-6)。通过对矿床地质及物化探特征进行综合分析,认为热昌金矿体赋存于花岗斑岩构造裂隙及与地层接触部位,受断裂及岩体控制。花岗斑岩西段深部存在低阻高激化的异常,地球化学异常Au、Cu、W等多元素套合性好,在花岗斑岩体边界及内部破碎带部位,矿化富集。热昌金矿的发现,为洛隆弧前盆地区域性找矿提供了积极的线索。     

综合物化探方法在坦桑尼亚卡尹泽金矿区勘查中的应用

坦桑尼亚卡尹泽金矿区位于坦桑尼亚卡哈马绿岩带,是坦桑尼亚金矿重要成矿区。通过开展地面高精度磁法测量、土壤地球化学测量和激电中梯测量相结合的综合物化探方法研究,分析了物化探异常特征,建立了卡尹泽金矿区物化探综合找矿评价标志,为矿区下一步找矿工作指明了方向。后经工程查证,在物化探异常区内发现了金矿体,综合物化探方法在卡尹泽金矿区找矿效果明显。     

老挝纳勐金矿区地质特征及找矿方向

纳勐金矿区位于北北西向长山—邦美蜀海西印支复式褶皱带东南端,成矿地质条件优越,原为砂金采集地,通过化探、地质填图、槽探、钻探等勘查手段,初步查明了西部含矿构造蚀变带(F1)和东部含矿构造蚀变带(F2),在东部含矿构造蚀变带发现原生金矿,原生金矿与硅化、钠长石化、碳酸盐化、黄铁矿化等关系密切,属构造蚀变岩型金矿。文章通过成矿地质条件分析,探讨该区的金矿找矿方向。     

河南省栾川县老王沟矿区多金属矿物化探异常特征及找矿预测

老王沟矿区位于河南省栾川矿集区的西南部,周边矿权密集,成矿地质条件优越。在区内开展了1∶1万土壤地球化学测量,共圈定了8处综合异常。采用化探剖面、激电中梯和槽探等综合手段进行异常查证,在综合异常TR05内发现了与断裂F4有关的铅矿化体;综合异常TR07和TR08与激电中梯高极化率低阻异常套合较好;综合异常TR07开展了岩石地球化学剖面测量,在断裂构造F7处见Zn、Pb、Mo和W高值异常,经槽探工程验证发现了锌矿体。结合区域成矿地质条件和物化探信息,推测老王沟矿区具有较好的找矿前景。     

新疆哈密黑山金矿物化探异常特征及找矿预测

黑山金矿"又称宝东金矿"处于沙泉子断裂以南的中天山地块,为2016—2017年"1∶5万沙泉子幅矿产地质调查"新发现的金矿点,处于北西向和北东向断裂交汇部位,赋存于编号为SHS-15岩屑测量综合异常中,对重点地段通过槽探工程结合物探高磁精测剖面和激电测深成果实施了钻探验证。认为金矿化带赋存于晚古生代中酸性火山岩组,其次为天湖岩群变质岩,受北东向构造控制,成因为浅成低温热液型。该区总体工作程度低,通过综合研究,认为黑山金矿区除新圈定的金矿化带外,还存在北区、南区2个成矿潜力地段,目前仅对现有矿化带进行了初步验证和控制,矿区深部及两侧、南区及北区有较好找矿前景,应进一步开展地质勘查。     

内蒙古鄂伦春自治旗953高地金矿地质特征及找矿标志

953高地金矿工作区位于大兴安岭主脊铜铅锌银多金属成矿带北段,处于吉峰—环宇韧性推覆构造的中东部。在地质、物化探评价工作的基础上,目前初步圈定的3条金矿化蚀变带、5条金矿体均为钻探过程中发现的隐伏矿体。初步推断矿床成因类型属变质—热液型金矿床(或浅成热液层控型金矿床)。从区域、矿区成矿条件分析,该矿区有较好的找矿前景。     

地物化综合方法在坦桑尼亚卢帕金矿田东缘找矿中的应用

卢帕金矿田位于坦桑尼亚西南部,是坦桑尼亚仅次于北部维多利亚湖金矿田的重要产金区。通过在卢帕金矿田东缘已知金矿点及其外围开展地质、物探和化探综合勘查。在东部土壤测量区发现了8个综合异常,其中HT1-甲3 As-Au-W-Sb、HT4-甲3 Au-As和HT7-乙3 Au-Mo-Bi-Ag等3个综合异常,异常面积大、强度高,具清晰的三级浓度分带和较强的浓集中心,经查证均为矿致异常。经地表探槽工程和深部钻孔验证,在研究区西部发现工业金矿体,证实激电中梯D9、D5、D3"低阻"异常带应为F1、F2、F3构造破碎带深部激电响应。该矿床的发现是地质、物探、化探综合勘查方法在卢帕金矿田东缘找矿实践中的成功案例。     

物化探综合方法在皖南东源斑岩型钨矿早期勘查中的应用

东源钨矿是皖南地区首次发现的斑岩型大型白钨矿床,文章探讨了物化探综合方法对该矿床的靶区选定、早期发现和勘查的作用。首先通过1∶10万航空磁法测量和1∶20万水系沉积物化探测量,选定重点找矿靶区;其次地表投入1∶1万地磁、1∶1万土壤化探测量,探寻钨矿化异常,查明成矿地质体特征;最后利用槽探工程,对钨矿化异常进行揭露。这种物化探综合方法找矿模式取得了良好的找矿效果。     

综合物化探方法在黑龙江滚子沟地区铀矿勘查中的应用与研究

综合物化探方法在我国矿产勘查领域中取得了较好的找矿效果,近年来被广泛应用。本次研究利用航空伽玛能谱测量、地面伽玛能谱测量、音频大地电磁测量相结合的方式,对黑龙江省嘉荫县磨石山滚子沟地区进行铀矿勘查工作。首先通过航空伽玛能谱测量数据,选定重点找矿地区;其次在地表利用地面伽玛能谱测量,探寻了铀矿化异常信息;利用音频大地电磁测量,查明其断裂构造形态特征;最后利用槽探工程,对铀异常线索进行了揭露,形成了一套航空(综合选区)—地面(查明铀异常特征)—地下(探槽揭露)"三位一体"综合找矿方式,并取得了较好的找矿效果。     

新疆希勒库都克铜钼金矿靶区优选与评价

索尔库都克—喀拉通克铜钼金矿集区是新疆准噶尔北缘向阿尔泰南缘过渡地区重要的铜、钼、金多金属矿集中分布区,有着优越的成矿地质条件.在矿集区区域成矿地质背景、成矿地质条件研究的基础上,通过区域化探、遥感异常筛选,运用地质、物化探综合信息找矿预测方法优选了希勒库都克铜钼金找矿靶区,并运用地质填图、高精度磁测、激电测量、土壤地球化学测量、岩石地球化学测量、槽探等工程对靶区进行找矿评价,进而运用钻探、坑探等手段进行工程验证,估算了钼资源量,达到中型以上矿床规模,并总结了一套靶区优选评价的方法技术,对于矿集区内找矿预测具有一定的指导意义.     

Levels of antimony,arsenic, cadmium,copper, lead,mercury, selenium,silver, tin and zinc in bone tissue of industrially exposed workers

The contents of the elements antimony, arsenic, cadmium, copper, lead, mercury, selenium, silver, tin and zinc in bone tissue from autopsy specimens of the femur of workers who had been exposed to a large number of metals in a smeltery and refinery in Northern Sweden as well as of a control group have been quantitatively assayed.The analytical techniques used were atomic absorption spectrophotometry, neutron activation analysis and particle induced X-ray emission analysis (PIXE) in a proton microprobe. Increased levels of lead in the bone tissue of exposed workers compared to a non-exposed control group were observed. The median level of lead in the group of exposed workers exceeded the corresponding value of the control group about 5 times.Using the proton microprobe in the PIXE-mode, concentration profiles of copper, lead and zinc were examined within the Haversian system of the bone samples.     

Archi-Union Architects,City of Breeze,Shenzhen Bay,Shenzhen, China

What happens when ancient cultural practices are combined with the most current design technologies? Archi-Union Architects used the opportunity of their entry to the 2014 Shenzhen Bay ‘Super City’ International Competition to develop a bespoke generational method that integrated feng shui with advanced environmental simulation techniques. Philip F Yuan, the founder and director of Archi-Union Architects, who is Associate Professor in Architecture at Tongji University, Shanghai, here describes the City of Breeze project and the design methodology behind it.     

高黎贡手工造纸博物馆，云南，中国

纸张产生于迄今2000多年前,是中国古代四大发明之一。顾名思义,手工造纸博物馆展现了造纸的历史与过程,辅以现场演示和手工作坊的阐释手段。它展示、保存和开发当地的造纸艺术,并推动该领域的学术研究和文化交流。为了实现这些目标,博物馆为来访者提供了住宿和艺术家的住宅,并设计了一间茶室作为当地人的聚会活动场所。它可以视作中国近期发展小规模专业博物馆趋势的一部分。这些专业博物馆致力于记录和宣传中国的地区历史与文化。     

纳高尔堡修缮，纳高尔，拉贾斯坦，印度

拉贾斯坦邦中部的古城纳高尔是印度北部的穆斯林势力（12—16世纪）的第一批据点之一。纳高尔位于一条重要的马帮路线上,这里也是苏菲派重要的修行和朝圣中心。纳高尔堡坐落在一座小山上。     

清华大学建筑学院新馆,北京,中国

<正>新建筑馆的体量为旧馆内院的三边所限定。为了模糊表面之间的距离以消解位处夹缝中的压迫感,立面铺满倾斜的穿孔钢板。建筑下沉地面半层,底层架空并采用玻璃立面,东西两面向内退2m,以进一步获得轻盈感,减少对地面的压迫。立面划分为九宫格,并进一步由钢板均质划分,与无序的室外环境对比、相衬。新建筑不对旧立面做形态上     

Pollution of montane soil with Cu, Zn, As, Sb, Pb, and nitrate in Kanto, Japan

Soil cores and rainwater were sampled under canopies of Cryptomeria japonica in four montane areas along an atmospheric depositional gradient in Kanto, Japan. Soil cores (30 cm in depth) were divided into 2-cm or 4-cm segments for analysis. Vertical distributions of elemental enrichment ratios in soils were calculated as follows: (X/Al)_i/(X/Al)_BG (where the numerator and denominator are concentration ratios of element-X and Al in the i- and bottom segments of soil cores, respectively). The upper 14-cm soil layer showed higher levels of Cu, Zn, As, Sb, and Pb than the lower (14-30 cm) soil layer. In the four areas, the average enrichment ratios in the upper 6-cm soil layer were as follows: Pb (4.93) ≥ Sb (4.06) ≥ As (3.04) > Zn (1.71) ≥ Cu (1.56). Exogenous elements (kg/ha) accumulated in the upper 14-cm soil layer were as follows: Zn (26.0) > Pb (12.4) > Cu (4.48) ≥ As (3.43) ≥ Sb (0.49). These rank orders were consistent with those of elements in anthropogenic aerosols and polluted (roadside) air, respectively, indicating that air pollutants probably caused enrichment of these elements in the soil surface layer. Approximately half of the total concentrations of As, Sb, and Pb in the upper 14-cm soil layer were derived from exogenous (anthropogenic) sources. Sb showed the highest enrichment factor in anthropogenic aerosols, and shows similar deposition behavior to NO₃⁻, which is a typical acidic air pollutant. There was a strong correlation between Sb and NO₃⁻ concentrations in rainfall (e.g., in the throughfall under C. japonica: [NO₃⁻] = 21.1 [dissolved Sb], r = 0.938, p < 0.0001, n = 182). Using this correlation, total (cumulative) inputs of NO₃⁻ were estimated from the accumulated amounts of exogenous Sb in soils, i.e., 16.7 t/ha at Mt. Kinsyo (most polluted), 8.6 t/ha at Mt. Tsukuba (moderately polluted), and 5.8 t/ha at the Taga mountain system (least polluted). There are no visible ecological effects of these accumulated elements in the Kanto region at present. However, the concentrations of some elements are within a harmful range, according to the Ecological Soil Screening Levels determined by the U.S. Environmental Protection Agency.     

长生殿昆曲舞台,上海,中国

<正>戴志康邀请著名昆曲演员张军先生在会所表演昆曲经典戏目——长生殿。建筑师通过仔细研究会所,决定利用开放的下沉庭院,并尽量不改动现状来建设小剧院。他将中国古代在庭院临时分割空间的屏风这个概念,转换可以展现灯光图像的屏幕把整个庭院精致地隔离成一个抽象、纯粹、白色的场所。以最现代的形象表     

Determination of Co,Cu, Fe,Hg, Mn,Sb, Se and Zn in milk samples

Concentrations of Co, Cu, Fe, Hg, Mn, Sb, Se and Zn in IAEA milk (dry) standard A-11 were re-evaluated with the help of instrumental and radiochemical neutron activation analysis (NAA). The results show reasonably good agreement for Co (5.1 ± 0.55 ng/g) and Zn (34 ± 2.5 μg/g), in relation to the recommended values. For Cu (374 ± 15 ng/g), Fe (2.4 ± 0.34 μg/g) and Mn (250 ± 20 ng/g); the results obtained are lower than the reported values.Cu, Mn, and Zn were cross-checked by atomic absorption spectrophotometry (AAS). The results, Cu = 331 ± 27 ng/g, Mn = 302 ± 62 ng/g, and Zn = 35 ± 1 μg/g, fall within the range of mean values obtained by NAA.For Hg and Se, using instrumental NAA, only upper limits could be indicated; because of the low levels of concentrations of Hg and Se on one hand, and high content of P (9100 μg/g) in A-11 milk standard on the other, NAA coupled with radiochemistry is to be preferred for these two elements.In pooled human milk, in addition to Cu and Mn (radiochemical) and Co, Fe, Sb and Zn (instrumental), Hg and Se could also be determined non-destructively because of the favourable Hg/P and Se/P ratios in this matrix.     

波士顿艺术博物馆,波士顿,美国

波士顿艺术博物馆成立于1870年,是美国最大、世界上最好的博物馆之一,每年有超过100万的参观者。但是,同其他许多此类机构一样,观众的规模导致了博物馆设施被过度使用。在建筑上,这个项目重复了德国议会大厦和大英博物馆的大厅所探讨的主题,结合了新旧元素,并且通过让博物馆变得更为开放和易达来加强同社区的联系。博物馆总体设计的核心是对建筑的鲍扎平面的逻