Moreno y Escandón’s Plan geográphico del Virreinato de Santafé de Bogotá, 1772

The extent to which Francisco Antonio Moreno y Escandón’s plan of the Viceroyalty of Santafé sparked a revival of cartographical activity has hitherto been overlooked. The Viceroyalty of Santafé was created as a major unit in the Spanish Empire in 1739 and included the present-day countries of Colombia, Ecuador, Venezuela and Panama. Moreno, a high-standing Creole functionary, mapped the region in 1772 in the context of its administrative organization. By drawing attention to Moreno’s official map, I hope to encourage the study of late-colonial and early-republican cartography of the northwestern part of the former Spanish-American dominion and the present-day constituent republics.     

360°瑞士美景

<正>MySwitzerland.com在中国,提起瑞士,有人说那儿有美丽的阿尔卑斯雪山:有人想起经历了几个世纪的传奇——瑞士手表:也有人提及带些神秘色彩的瑞士银行……的确.这个西欧中不大的袖珍小国承载了太多的传奇。来瑞士.领略自然本色和人类文明发展到极致的完美与和谐:来瑞士.在依然纯净如初的保鲜空气里为自己洗去旅居大都市的尘嚣;来瑞士.敞开心肺.深呼吸!瑞士,一个你不能擦肩而过的地方……     

Tidal winds in the radio-meteor region over Trivandrum (8.5°N, 77°E)

Wind measurements using a meteor trail radar which performed during two June solstice and three December solstice months were analysed to study the tidal winds over Trivandrum (8.5°N). The ter-diurnal (8 h) component of wind was found to be as significant as the diurnal and semi-diurnal components. The modulations in the altitude profiles of amplitude and phase of the tidal wind components are interpreted to be due to higher order tidal modes. The amplitudes and vertical wavelengths of the tidal modes observed in the meteor zone are discussed.     

南纬17°高更之爱

高更说,南纬17°,夜夜都是美的;北纬47°,巴黎,我相信,椰子树已不存在,声音也不再悦耳动听……高更重回了巴黎,但两年后,他还是选择回到了大溪地,再也未曾离开。这里到底有怎样的魔咒,让高更深深迷恋并追寻一世？无论如何,世上没有第二个高更,但每个人都能找到自己热爱的大溪地。     

流淌在17°的柔软光阴

一阵东风吹出来绝世景观 由市区驶到梅城旅游码头,不过短短半个小时,大家有说有笑踏上“扬帆之星”的游轮,江风拂面吹来无限的惬意,抬眼沿途尽是青山绿水构建而成的诗境.“七里扬帆”景点有“小三峡”之称,融江湖之浩瀚、峡谷之幽深、水乡之秀媚于一体,既是一条山水长廊,也是一条极富情韵的诗画长廊,引人人胜.     

The quasi 2-day wave at Durham (43°N): solar and magnetic effects

A quasi 2-day oscillation has been observed in the meteor winds at Durham since 1970. On a four-day basis the oscillation occurs throughout the year with amplitudes of 10 m s⁻¹ and standing wave or evanescent (λ_z > 150 km) behavior with height. During late summer the oscillation increases in amplitude to ~30 m s⁻¹ with increased phase coherence. When analyzed as a 48 h component the time of maximum of the North-South oscillation prefers the value 15 h LST implying some interaction with the solar tides. The amplitude of the 2-day component is correlated with the daily magnetic index A_p indicating magnetic activity as a possible forcing for this oscillation.     

Observations of the quasi 2-day wave near 90 km altitude at Adelaide (35°S)

A quasi 2-day oscillation in the meridional winds near 90 km altitude has been observed at Adelaide (35°S) during late summer of the years 1966–1975. The mean amplitude in mid-January is 48 m s⁻¹, and the phase variation with height is indicative of a wave with downward phase propagation and a vertical wavelength greater than 100 km.     

Upper atmosphere semidiurnal tides at Christchurch (44°S) and Scott Base (78°S)

Lunar and solar semidiurnal tides have been determined from winds measurements in the 82 to 100 km height range at Christchurch and Scott Base made during 1983–1984. At Christchurch, the solar tide has maximum amplitudes in April and December, while at Scott Base, only the December maximum is present at all heights. Phases at Scott base mostly agree with those measured earlier at Mawson, but vertical wavelengths are always long. The lunar tide was difficult to isolate at Christchurch, but the winter to summer phase reversal was clear. This was also seen at Scott Base.     

Long period wind oscillations in the meteor region over Trivandrum (8°N, 77°E)

The spectra of long period wind oscillations in the meteor zone over Trivandrum are presented. The spectral amplitudes were found to be much larger during June 1984 when the QBO in the stratospheric zonal wind was in a strong easterly phase compared with June 1987 when the zonal winds at the altitude of maximum QBO were weak westerlies. Zonal wind amplitudes for periods of 15 and 5 days were found to be most significant during these two June months. The amplitudes of these two oscillations in meridional wind were found to be as large as the amplitudes in the zonal wind. The vertical wavelength in both zonal wind and meridional winds of the 15-day oscillation is very large whereas for the 5-day oscillation the vertical wavelengths were 80 and 65 km during June 1984 and June 1987, respectively. The results are discussed.     

On the nighttime increase of NmF2 at Jicamarca on 2–3 February 1965

The conditions of the nighttime increase in NmF2 at the geomagnetic equator are investigated. It is shown that, in an altitude region above 250 km, after 2100 LT, the increase is due to a downward electromagnetic drift when the compression of the plasma associated with the drift overcomes the chemical loss rate.     

从2010年理综全国工卷28题讨论Mg^2＋、Al^3＋和CO3^2-、HCO3^-的反应

1题目呈现 2010年理科综合能力测试全国I卷第28题是：有A、B、C、D、E和F六瓶无色溶液,它们都是中学化学中常用的无机试剂,纯E为无色油状液体;B、C、D和F是盐溶液,且它们的阴离子均不同。现进行如下实验：     

Rotational temperatures for OH and O2 airglow bands measured simultaneously from El Leoncito (31°48′S)

Some results from 54 nights of simultaneous measurements, performed between 1984 and 1987, of rotational temperatures for the OH(6−2) and O₂(¹∑)(0–l) bands are presented. A summer enhancement by 15 K in O₂ temperature has been found that has not formerly been observed in airglow measurements. At least five nights show prominent tide-like temperature oscillations with a phase shift between layers typical of upward wave propagation at about 10 km h⁻¹, with up to 55 K variation. During other nights, similar oscillations are limited to the O₂ layer. Data for different seasons seem to be characterized by different levels of variability. During the one equinox campaign, nocturnal temperature variations show an exceptionally stable pattern of tide-like oscillations.     

北纬39°东方波尔多美酒与美景兼得

昌黎葡萄酒的前世流年 昌黎在哪里?在北京以东200多公里处,离北戴河只有一步之遥.踏上昌黎的土地,仿佛置身葡萄的海洋,满山遍野的葡萄让人眼花缭乱,目不暇接. 昌黎缘何盛产葡萄呢?据说与当地的地理位置和土壤有关.     

《中华民国史》第3编第2卷序言

本卷内容起自1932年淞沪抗战,迄至1937年“七七”事变,共计5年半时间。主要叙述这一阶段民国的政治、军事与外交,也涉及财政、经济、教育及科学。     

浅析“3＋2”高职教育的有效对接

本文探讨了目前我国“3＋2”高职教育存在的衔接到位的问题,从中、高职院校的有效对接方面着手,针对办思路、课程设置、教学管理等问题提出了相应的解决方案,在加强“3＋2”高职教育的中、高职有效对接,进一步提高“3＋2”的办学质量。不学旨勺     

大红山铁矿Ⅲ2-3矿体采矿方法优化研究

通过对普通房柱采矿法与留条柱的空场采矿法进行适应性对比分析,明确了留条柱的空场采矿法在大红山铁矿Ⅲ2-3矿体实行的必要性,系统阐述了留条柱空场采矿法的实施方案及用废石充填治理采空区的实施工艺,降低了普通房柱法采矿作业中的高损失率,使矿产资源得到充分有效回收,同时用废石充填采空区减少废石外排费用,缓解外废石场堆存压力,为矿业公司降本增效工作做出巨大贡献。     

"3+2"对口专本贯通分段培养研究

高等职业教育培养的人才应用性强,技术与技能性强,而且职业针对性强,具有很大的优势,所以,这两年,很多省提出并践行3+2对口专本贯通分段培养.为了培养出优质的3+2对口贯通学生,既要注重学生的品德培养,又要关注高职与对口本科高校共参、共管、衔接培养,还得坚持文化+技能并重,增加职业适应性测试.