2009中国广州国际家具展速递

素有“亚洲家居交易中心”美誉的中国广州国际家具博览会将于2009年3月18至21日和3月27至30日分两期在中国进出口商品交易会琶洲展馆隆重举行,总面积将达到50万平方米。第一期2009年3月18至21日为“大家居”题材,包括：民用家具、家居饰品,户外家具、厨房家具、家纺、工艺陶瓷等六大题材;第二期3月27至30日为办公家具和木工机械、家具配料题材。     

求新 求变 求突破——第23届中国广州国际家具博览会掠影

素有“亚洲家居交易中心”美誉的中国广州国际家具博览会于2009年3月18至21日和3月27至30日,分两期在中国进出口商品交易会琶洲展馆隆重举行。第一期2009年3月18至21日为“大家居”题材,包括：民用家具、家居饰品、户外家具、家用纺织品、工艺陶瓷等五大题材及数码整体厨房展示区;第二期3月27至30日为办公家具和木工机械、家具配料题材。     

3月广州国际家具博览会最新动态

素有“亚洲家居交易中心”美誉的中国广州国际家具博览会将于2009年3月18～21日和3月27～30日．分两期在广州琶洲展览馆举行,总面积将达50万平米。 第一期3月18～21日为“大家居”题材,包括：民用家具、家居饰品、户外家具、厨房家具、家纺、工艺陶瓷等六大题材;第二期3月27至30日为办公家具和木工机械、家居配料题材。     

中国（上海）综合木工展速递

依托市场优势,拓宽展会平台享有“亚洲家具交易中心”美誉的中国广州国际家具博览会经历2005年3月成功分期举办后,以兴盛规模与至臻品质,风靡全国同行和广袤海外,晋身“国际知名家具展”前列,成为世界家具业的焦点之一。 2006年3月,广州家具展将迎来第十七届盛会第一期于3月18日-21 日举行,展出的题材为民用家具;第二期于3月27日-30日举行,展出题材为办公、商用家具。     

第17届中国广州国际家具展掠影

3月18日-21日第17届中国广州国际家具博览会民用家具展、2006(春)中国广州国际家居饰品／用品展览会已隆重举行。本届家具展继续采用分两期举行的成功模式:第一期于 3月18-21日举行,展出的题材为民用家具;第二期于3月27-30日举行,展出题材为办公、商用家具。家具展第一期与家居饰品／用品展同期举行。2006中国广州国际木工机械、家具配料展览会、2006(春)中国广州国际家纺布艺展     

长沙窑主题餐厅——设计大师登琨艳妙手演驿湖湘文化

3月18日-21日第17届中国广州国际家具博览会民用家具展、2006 (春)中国广州国际家居饰品／用品展览会已隆重举行。本届家具展继续采用分两期举行的成功模式:第一期于3月18-21日举行,展出的题材为民用家具;第二期于3月27-30日举行,展出题材为办公、商用家具。家具展第一期与家居饰品／用品展同期举行。2006中国广州国际木工机械、家具配料展览会、2006(春)中国广州国际家纺布艺展览会将与家具展第二期办公／商用家具展同期举行。两期四展总面积超过25万平方米, 是目前亚洲规模最大的家居专业题材博览会。     

缔造行业国际盛会——第29届中国广州国际家具博览会综述

被誉为＂中国家具行业晴雨表＂的第29届中国广州国际家具博览会于2012年3月18日-21日（民用家具展）及27日-30日（办公环境展）在中国进出口商品交易会展馆（琶洲）分两期盛大举行。本届广州家具展以62万平方米的超大规模和3375家参展企业,成为全球当之无愧的最具影响力的家具专业展览会之一。3月18日上午9：30,第29届中国广州国际家具展开幕式在琶洲展馆隆重举行,     

2009中国广州国际家具展中国广州国际木工机械与家具配料展速递

第23届中国广州国际家具博览会正在紧锣密鼓的筹备当中,本届展会一期民用家具展将于2009年3月18-21日在广交会展馆举行,届时将与家居饰品展、家纺布艺展、户外及休闲展、厨房家具展、陶瓷展同期举行,共同构成广州家具博览盛会。     

第23届中国广州国际家具博览会展后报道

第23届中国广州国际家具博览会（民用家具展）、2009中国广州国际户外及休闲展览会、2009中国广州国际家居饰品／用品展览会、2009中国（广州）国际家用纺织品及辅料博览会、2009中国广州国际陶瓷展览会,以及第23届中国广州国际家具博览会（办公家具展）、2009中国广州国际木工机械、家具配料展览会已分别于2009年3月21日及3月30日在广交会琶洲展馆圆满地落下帷幕。     

第十一届中国广州国际家具博览会

由中国家具协会、中国对外贸易中心(集团)和广东省家具协会共同主办．经中国对外贸易广州展览公司承办的中国广州国际家具博览会(简称广州家具展)将于2003年3月18至21日拉开帷幕，羊年伊始．中国家具兴盛之花将再次绽放在广州中国出口商品交易会展览馆。届时还将同期举办中国广州家纺装饰布     

Arsenic(III) oxidation by iron(VI) (ferrate) and subsequent removal of arsenic(V) by iron(III) coagulation

We investigated the stoichiometry, kinetics, and mechanism of arsenite [As(III)] oxidation by ferrate [Fe(VI)] and performed arsenic removal tests using Fe(VI) as both an oxidant and a coagulant. As(III) was oxidized to As(V) (arsenate) by Fe(VI), with a stoichiometry of 3:2 [As(III):Fe(VI)]. Kinetic studies showed that the reaction of As(III) with Fe(VI) was first-order with respect to both reactants, and its observed second-order rate constant at 25 degrees C decreased nonlinearly from (3.54 +/- 0.24) x 10(5) to (1.23 +/- 0.01) x 10(3) M(-1) s(-1) with an increase of pH from 8.4 to 12.9. A reaction mechanism by oxygen transfer has been proposed for the oxidation of As(III) by Fe(VI). Arsenic removal tests with river water showed that, with minimum 2.0 mg L(-1) Fe(VI), the arsenic concentration can be lowered from an initial 517 to below 50 microg L(-1), which is the regulation level for As in Bangladesh. From this result, Fe(VI) was demonstrated to be very effective in the removal of arsenic species from water at a relatively low dose level (2.0 mg L(-1)). In addition, the combined use of a small amount of Fe(VI) (below 0.5 mg L(-1)) and Fe(III) as a major coagulant was found to be a practical and effective method for arsenic removal.     

Iron(VI) and iron(V) oxidation of copper(I) cyanide

Copper(Il) cyanide (Cu(CN)4(3-)) in the gold mine industry presentsthe biggest concern in cyanide management because it is much more stable than free cyanide. Cu(CN)4(3-) is highlytoxic to aquatic life; therefore, environmentally friendly techniques are required for the removal of Cu(CN)4(3-) from gold mine effluent. The oxidation of Cu(CN)4(3-) by iron-(VI) (FeVIO4(2-), Fe(VI)) and iron(V) (FeVO4(3-), Fe(V)) was studied using stopped-flow and premix pulse radiolysis techniques. The stoichiometry with Fe(VI) was determined to be 5HFeO(4-) + Cu(CN)4(3-) + 8H2O - > 5Fe(OH)3 + Cu2+ + 4CNO- +3/202 + 6OH-. The rate law for the oxidation of Cu(CN)4(3-) by Fe(VI) was found to be first-order with each reactant. The rates decreased with increasing pH and were mostly related to a decrease in concentration of reactive protonated Fe(VI) species, HFeO4-. A mechanism is proposed that agrees with the observed reaction stoichiometry and rate law. The rate constant for the oxidation of Cu(CN)4(3-) by Fe(V) was determined at pH 12.0 as 1.35 +/- 0.02 x 10(7) M(-1) s(-1), which is approximately 3 orders of magnitude larger than Fe(VI). Results indicate that Fe(VI) is highly efficient for removal of cyanides in gold mill effluent.     

Mind the (yield) gap(s)

This paper explores the origin of the notion of ??yield gap?? and its use as a framing device for agricultural policy in sub-Saharan Africa. The argument is that while the yield gap of policy discourse provides a simple and powerful framing device, it is most often used without the discipline or caveats associated with the best examples of its use in crop production ecology and microeconomics. This argument is developed by examining how yield gap is used in a selection of recent and influential agricultural policy documents. The message for policy makers and others is clear: ??mind the (yield) gap(s)??, for they are seldom what they appear.     

Supercritical fluid extraction (SFE) of 4(5)-methylimidazole (4-MeI) and 2-acetyl-4(5)-(1,2,3,4)-tetrahydroxybutyl-imidazole (THI) from ground-coffee with high-performance liquid chromatographic-electrospray mass spectrometric quantification (HPLC/ESI-MS).

Two polar analytes, 4(5)-methylimidazole (4-MeI) and 2-acetyl-4(5)-(1,2,3,4)-tetrahydroxybutyl-imidazole (THI), were extracted with supercritical carbon dioxide (CO2) modified with aqueous methanol. The method was applied to a roasted coffee powder with good recovery rates. Method efficiency was compared with that of solid-phase extraction using SCX Disc cartridges and validated for spiked solid matrix. The analytes were determined using isocratic liquid chromatography-mass spectrometry (LC/MS) on an Atlantis HILIC Silica column (150 x 2.1 mm, 3 microm) with 80% methanol and 20% 0.01 mol l-1 ammonium formate as the mobile phase. The limit of quantification was around 1.5 pg for 4-MeI and 2.0 pg for THI. The linearity of the calibration curves was satisfactory as indicated by correlation coefficients of >0.999. The coefficient of variation for the intra-day and inter-day precisions was <4% (n = 6). Accuracy was in the range 98-101%; recovery rates were > or = 98 and > or = 99% for THI and 4-MeI, respectively. Several samples of Arabica coffee from various locations and commercially available 'off-the-shelf' coffee products (Arabica/Robusta mixtures) were analysed to test the method.     

Reduction of Tc(VII) by Fe(II) sorbed on Al (hydr)oxides

Under oxic conditions, Tc exists as the soluble, weakly sorbing pertechnetate [TcO4-] anion. The reduced form of technetium, Tc(IV), is stable in anoxic environments and is sparingly soluble as TcO2 x nH2O(s). Here we investigate the heterogeneous reduction of Tc(VII) by Fe(II) adsorbed on Al (hydr)oxides [diaspore (alpha-AlOOH) and corundum (alpha-Al2O3)]. Experiments were performed to study the kinetics of Tc(VII) reduction, examine changes in Fe surface speciation during Tc(VII) reduction (M?ssbauer spectroscopy), and identify the nature of Tc(IV)-containing reaction products (X-ray absorption spectroscopy). We found that Tc(VII) was completely reduced by adsorbed Fe(II) within 11 (diaspore suspension) and 4 days (corundum suspension). M?ssbauer measurements revealed thatthe Fe(II) signal became less intense with Tc(VII) reduction and was accompanied by an increase in the intensity of the Fe(III) doublet and magnetically ordered Fe(III) sextet signals. Tc-EXAFS spectroscopy revealed that the final heterogeneous redox product on corundum was similar to Tc(IV) oxyhydroxide, TcO2 x nH2O.     

优质农业生产管理指导手册

优质农业生产管理体系(GAP)概念提出的目的在于确保烟叶生产的持续、健康发展,可以将GAP定义为:在保护、维持或增强土壤、水源、空气、动植物生命和环境的同时,在确保农业生产可持续发展的条件下,推行一系列农业措施,生产出一定产量和质量的优质农作物.     

优质农业生产管理指导手册(二)

4病虫害综合防治 病虫害综合防治(IPM)是烟叶生产的一项系统体系,利用病虫害预测预报系统,提供最好的病虫害综合防治决策,重点是协调应用一切可行的办法.病虫害综合防治并不意味着完全排除使用农药,而是在使用其它办法不能使病虫害的种群数保持在可接受的范围时适当使用农药.施用农药的地方应确保安全,并遵守一切法律法规.     

优质农业生产管理指导手册(三)

7 烘烤（调制）和烤房管理 烟叶的正确烘烤和烤房管理对优化烟叶的产量、质量和产值来说是非常关键的因素。烟叶烘烤是保持烟叶产量、质量的最后一道环节。烟叶质量会因烘烤不当而降低，而正确进行烘烤能确保烟叶质量的稳定。然而，若将劣质的鲜烟叶或烟株放入烤房，则不可能提高最终的烟叶质量。     

Reactivity of Pb(II) at the Mn(III,IV) (oxyhydr)oxide--water interface

In this study, the reactivity of lead (Pb(II)) on naturally occurring Mn(III,IV) (oxyhydr)oxide minerals was evaluated using kinetic, thermodynamic, and spectroscopic investigations. Aqueous Pb(II) was more strongly adsorbed to birnessite (delta-MnO1.7) than to manganite (gamma-MnOOH) under all experimental conditions. The isoteric heat of Pb adsorption (delta HT) or birnessite was 94 kJ mol-1 at a surface loading of 1.1 mmol g-1, and decreased with increasing adsorption density. This indicated that adsorption was an endothermic process and that birnessite possessed heterogeneous sites of reactivity for Pb. X-ray absorption fine structure (XAFS) spectra revealed that Pb was adsorbed as inner-sphere complexes on both birnessite and manganite with no evidence to suggest oxidation as an operative sorption mechanism. Lead appeared to coordinate to vacancy sites in the birnessite layer structure with concurrent release of Mn to solution, which resulted in a greater number of second shell Mn scatterers in Pb-birnessite when compared to Pb-manganite samples. The difference in Pb coordination apparently explained the contrasting desorption behavior between the two Mn minerals. These results have significant implications for Pb partitioning in soil environments containing solid-phase Mn(III,IV) (oxyhydr)oxides.