S.M.“造星工厂”的营销策略

21世纪初开始,韩流作为全球乐坛的一大分支以迅猛的速度占据了亚洲音乐市场,在继续保持拥有亚洲市场的同时,韩国歌手也慢慢地被欧美地区接受,成为了不可忽视的乐坛力量。本文分析的对象是韩国"造星工厂"S.M.公司,其公司明星拥有今天的人气和影响力,不仅在于公司的造星流水线,也离不开其成熟的营销模式和品牌打造策略。     

利用感耦等离子体原子发射光谱真空紫外波段测定I.P.B.S.As和Sn

<正> 本文介绍了采用170—200毫微米之间的谱线,通过 ICP-AES 定量测定 I、P、B、S、As 和 Sn 的方法。光谱仪保持真空,压力低于0.1帕,光路由99.99%的纯氩充满,其流速为3.5升/分。本法已用于测定铁、钢     

富含H.S.B菌群活性污泥降解煤气废水的试验研究

煤气是一种清洁的燃料。然而,在煤气化生产过程中也产生了大量废水。生物降解目前是煤气化废水治疗的主要方法。由于煤气废水对微生物有较强的毒性和抑制性,生物学的技术提高是特别必需的。采用厌氧-好氧工艺,接种焦化厂厌氧池和好氧池成熟污泥,经驯化,通过对废水COD去除率的测定,结果显示,厌氧降解实际废水试验中,9天后COD去除率能达到72%以上;好氧降解水解出水试验中,7天后COD去除率能达到80%以上。     

溶藻细菌Chryseobaterium sp.S7控藻实验

为使溶藻细菌Chryseobaterium sp.S7在水体修复工程中得到科学应用,在单因素实验的基础上,确定细菌和Chl.a浓度的响应面中心点,以蓝绿藻Chl.a去除率为响应值,以细菌和Chl.a浓度为影响因素,采用Central-Composite响应曲面分析法,研究了影响Chryseobaterium sp.S7溶藻效应的2个重要因素的交互作用,得出Chl.a去除率与细菌初始浓度和水体Chl.a浓度的二次多项式模型。该模型具有显著性高(P<0. 01),模型拟合度好(R~2=0. 9071)等优点。当细菌初始浓度为9. 46×10~6cell/L、Chl.a初始浓度为175. 3 mg/m~3时,Chl.a理论去除率最大(83. 53%)。水槽实验也表明该模型具有一定实用性。针对不同水华水体,可以根据本文建立的模型确定细菌投放量,达到最优控藻效果。研究结果可为应用Chryseobaterium sp.S7控制蓝绿藻引起的水华污染提供参考。     

EXPLODING U.S. GRAIN DEMAND FOR AUTOMOTIVE FUEL THREATENS WORLD FOOD SECURITY AND POLITICAL STABILITY

Now that the year's grain harvest is safely in the bin, it is time to take stock and look ahead. This year's harvest of 1,967 million tons is falling short of the estimated consumption of 2,040 million tons by some 73 million tons. This shortfall of nearly 4 percent is one of the largest on record.Even more sobering, in six of the last seven years world grain production has fallen short of use. As a result, world carryover stocks of grain have been drawn down to 57 days of consumption, the lowest level in 34 years. The last time they were this low wheat and rice prices doubled.     

A synopsis of the book Striking a balance: improvingstewardship of marine areas(by the U. S. National Research Council the operating arm of the U. S National Academiesof Science and Engineering)

Sustainable use of the planet will require a more robust regulatory and management framework for marine areas as advances in offshore technology and changes in market conditions lead to an increase in coastal populations and marine recreation and tourism. Although each area of the world presents unique problems, many principles of stewardship, which can appropriately modified, will serve well anywhere on the planet. The purpose of this brief synopsis is to share these principles ot stewardship with colleagues in China. This volume (Striking a balance: improving stewardship of marine areas) notes:" In addition to the governance problems created by multiple nonmarket uses of marine resources and maintaining access to them, existing systems have two fundamental problems first, fragmentation among federal and local agencies and second, not enough participation and coordination of interests at the local level"( p. 4 ). Although this book focuses on marine ecosystems associated with the United States coastline( such as the Gulf of maine/Massachusetts Bay, the Florida Keys National Marine Sanctuary/Florida Bay ecosystem, and the Southern California coast), the issues, the problems, and strategies should be, with minor adjustments, fully applicable anywhere in the world. The following general elements of the framework for improved governance and management of marine areas are given as recommendations(p. 5)[Comments given in brackets are those of the author].     

The relationship between upwind SO2 emissions and SO4– concentrations in precipitation at six sites in the eastern U.S.A.

A method for estimating the upwind SO₂ emissions associated with individual wet SO₄²⁻ deposition events has been developed. The relationship between these estimates and wet SO₄²⁻ concentrations was examined at six Utility Acid Precipitation Study Program Sites (UAPSP) for the 1979–1986 period. Using Spearman correlation coefficients and the Bonferroni experimentwise criterion for statistical significance it was found that upwind emissions and concentrations were significantly related (p < 0.05). However, correlation's were sensitive to site location, time upwind of the emissions and season, and ranged from −0.03 to 0.50. Correlations were weaker at sites located west of the high emission region in the midwestern U.S.A. and stronger at sites further away and to the east of this region. There was a decrease in the strength of the correlations from the warm season to the cold season. It was also found that differences in meteorology between events obscured the relationship between emissions and concentrations. The effects of variations in ambient temperature and precipitation amount on wet SO₄²⁻ concentrations were taken into account by calculating partial correlation coefficients. A higher percentage of the resulting correlations were found to be statistically significant and the differences between sites decreased. This suggested that meteorological variability had a confounding influence on the detection of a link between concentrations and emissions. This influence should be considered when studying source-receptor relationships.     

Aqueous S(IV) oxidation—III. Catalytic effect of soot particles

The paper reports on studies of S(IV) oxidation in aqueous media containing suspensions of soot particles from domestic coal burning and activated carbon RB-1. The results show that the reaction rate depends upon dissolved iron leached from soot particles. At a low initial pH (⩽4), Fe(III) species are responsible for the high oxidation rate, whereas at a higher initial pH (5.2 – 5.5), Fe(II), which is primarily present in soot suspensions, acts as a catalyst. These homogeneous reactions dominate the catalytic effect of the coal soot surface. It is shown that the mechanism oof S(IV) oxidation catalysed by activated carbon is quite different.     

Aqueous S(IV) oxidation—I. Catalytic effects of some metal ions

Catalytic effect of metal ions [Fe(III), Mn(II), Cu(II), Pb(II) and Zn(II)] on the oxidation of S(IV) in aqueous solution at concentrations of metal ions and S(IV) as found in an urban atmosphere were studied under controlled experimental conditions (T, pH air flow rate, mixing, concentration of reactant, etc.). The following rate expressions were obtained: −r_S(IV) = k [Fe(III)] [S(IV)], −r_S(IV) = k [Mn(II)] [S(IV)]^0.65, −r_S(IV) = k [Cu(II)] [S(IV)]². The activation energy equals 104 kJ mol⁻¹ for Fe(III), 63.3 kJ mol⁻¹ for Mn(II), and 116.8 kJ mol⁻¹ for Cu(II) catalysed S(IV) oxidation.     

共存离子对ZVI/S.oneidensis还原U(Ⅵ)的影响研究

研究零价铁(ZVI)与奥奈达希瓦氏菌(S.oneidensis)协同还原去除水相中U(Ⅵ)时,共存离子Cr~(6+)、Fe~(3+)、Cu~(2+)、Mn~(2+)、Zn~(2+)、NO_3~-和SO_4~(2-)分别存在时对U(Ⅵ)还原效果的影响。结果表明:溶液中共存的Cr~(6+)和溶解态的Fe~(3+)对ZVI与微生物协同还原U(Ⅵ)均存在显著的抑制作用,且当溶液中共存Cr~(6+)的含量超过10.0 mg/L时,U(Ⅵ)的还原几乎被完全抑制。在共存金属浓度为20 mg/L时,Cu~(2+)、Zn~(2+)对U(Ⅵ)的还原均具有抑制作用,且Cu~(2+)的影响大于Zn~(2+);Mn~(2+)对U(Ⅵ)的还原有微弱的促进作用。共存阴离子SO_4~(2-)对U(Ⅵ)的还原有微弱的促进作用,且作用大小与其浓度成正相关;在0.5~5.0 mmol/L浓度范围内,12 h时,共存阴离子NO_3~-对U(Ⅵ)的还原有明显的抑制作用。     

В.И.斯米尔诺夫

<正> 莫斯科大学矿产系地质学和地球化学教研室主任、社会主义劳动英雄、列宁奖金获得者、科学院院士В.И.斯米尔诺夫1985年1月31日满75岁高龄。 В.И.斯米尔诺夫把毕生精力贡献于金属矿床地质学的研究。在他的科学成就中要指出的有:制定了地下矿物原料储量评价的合理     

E.F.舒马赫

E．F．舒马赫（Schumacher,E．F）,英籍德国人,世界知名的经济学者和企业家,被后人尊称为“可持续发展的先知”。 舒马赫于1911年生于柏林,其父是德国一位不知名的政治经济学教授。20世纪30年代,舒马赫先后在英国牛津大学和美国哥伦比亚大学学习经济学,并且22岁就留在哥伦比亚大学讲授经济学,成为该校历史上最年轻的学者之一。二战前,舒马赫移民到英格兰。     

V.M.戈尔德施密特奖与F.W.克拉克奖

<正> 这是(美国)地球化学学会(The Geochemical society)1973年11月开始颁发的、以地球化学创始人的名字命名的两项地球化学研究奖。其中的戈尔德施密特奖,又叫高级奖或成年奖,为一枚金质奖章和一张证书,奖章上刻有戈尔德施密特的半身像,授予在地球化学或宇宙化学方面取得重大成就的人。     

反烧法 消烟.除尘.节煤.

燃烧炉窑传统的烧煤方法是把煤放在底火上面,断续加煤的燃烧过程。而反烧法却是先把定量的煤放入燃烧室炉床上,形成一个较厚煤层,然后,在煤层上面置放火源点火燃烧,整个燃烧过程处于连续进行中。反烧法是从简易煤气炉的操作中发现的,它具有如下优点: 1.消烟除尘效果显著,实测     

基于.NET的B(S)/结构的环境管理信息系统的设计和开发研究

针对某企业目前环境管理的实际情况,分析该企业环境管理的各项需求,在对环境管理的的系统架构和功能平台进行充分设计的基础上,开发出一套较为完整的企业环境管理信息系统,使得企业中各部门能快捷共享环境数据库,提高企业处理环境事务的信息化水平.在系统的实现上,选定ASP.Net作为WEB服务端的开发技术,SQL Server作为后台数据库技术,完成基于.NET的B/S结构的企业环境管理信息系统的设计和开发,并成功应用于该企业的环境管理,满足了对环境管理信息化的需求.     

电池.环境.塑料电池

废电池对环境的危害主要发生在废旧电池丢弃后或随垃圾焚烧时。焚烧时电池中的有害物质将进入空气或随残渣埋入地下进而流入水源。美国CarnegieMellon大学曾对废电池危害环境问题做过深入研究，否定了把电动汽车看作未来绿色希望的主张。他们认为，电动汽车需要大量的电池，可能造成比普通汽车更严重的铅污染。尽管此说法受到广泛的批评，但是毕竟揭示了废电池对环境构成威胁的事实。镍镉电池是目前最通用的可充电电池。虽然人们已经认识到镉的危害，但目前还没有能取代它的材料。最近欧美的发达国家开始采取集中回收处理废电池办法，此外…