有機堿化合物 的英文怎麼說
中文拼音 [yǒujījiǎnhuàgěwù]
有機堿化合物
英文
organo-alkali compound-
They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem
本研究以重慶市的南川金佛山(自然保護區) 、黔江武陵山(國家重點退耕還林示範縣,森林覆蓋率50以上)和北碚中梁山(遭人為破壞嚴重)典型巖溶區為對象,選擇了幾種重要的利用方式,包括林地、果園、耕地、棄耕地和灌草坡,採用野外巖溶生態調查和室內試驗測量分析相結合的方法,以不同土地利用方式巖溶土壤肥力為重點,對不同土地利用方式土壤肥力特徵進行量化分析,找出巖溶土壤肥力差異的主要方面及其根本原因,論文主要從土壤剖面物理退化指標(有效土層厚度、有機質層厚度、質地、團聚體、水分含量等) ,化學肥力退化指標(有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等) ,樣地土壤微生物指標(細菌、真菌、放線菌數量及總量)以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究,為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological
分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象,依據astm標準及國際通用文物保護研究方法與評估準則相結合,通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定,及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響,對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。Unsaturated alkynyl alcohols, such as dehydronerolidol, dehydrogeranyllinalool, and dehydroisophytol, were prepared by ethynylation of turpentine derivatives, namely terpenylacetones, e. g. geranylacetone, farnesylacetone, and phyton under normal pressure in presence of alkali metal hydroxide and organic solvents
摘要松節油衍生物格萜烯基丙酮,如香葉基丙酮、金合歡基丙酮和植物酮在常壓條件,堿金屬氫氧化物和有機溶劑存在下可發生乙炔化反應,形成對應的, -不飽和炔醇化合物脫氫橙花叔醇、脫氫香葉基芳樟醇和脫氫異植物醇。Research interests : organic synthesis, including synthetic methodology, divergent oriented organic synthesis, asymmetric synthesis, asymmetric synthesis of small molecules with biological significance ( alkaloids, amino acids, pheromones, nucleosides analogues, enzyme inhibitors, receptor agonists and antagonists, bioactive heterocycles etc ) and chiral drugs
研究興趣:主要從事有機合成化學及相關的化學生物學研究,包括合成方法學、多樣性導向有機合成、不對稱合成、有機小分子調節劑(生物堿,氨基酸,昆蟲信息素,酶抑制劑,受體拮抗劑,核苷類似物等)和手性藥物的不對稱合成。Nano - alkali metal hydrides and lanthanide hydrides can be prepared easily by the direct hydrogenation catalyzed by ticl4 in tetrahydrofunan ( thf ) under normal pressure. lanthanide powder of nanometric size in a finely dispersed active form was generated by the thermal decomposition of organolanthanide in vacuum. 1
本文應用絡合催化法,在常溫常壓下,在萘/ ticl4催化體系作用下合成納米尺寸堿金屬氫化物(以nah為代表) 、納米尺寸鑭系金屬氫化物(以smh3為代表)和鑭系金屬有機化合物(以蒽鑭為代表) ,並通過真空熱解鑭系金屬有機化合物得到高分散度的納米尺寸鑭系金屬粉末(以la為代表) ,主要考察如下三個方面的內容。Test method for acidity - alkalinity of halogenated organic solvents and their admixtures
鹵化有機溶劑及其摻合物酸堿度的測試方法They include alkaloids, steroids, phenolics, saponins, tannins, resins, essential oils, various organic acids, and other componds.
它們包括生物堿、甾類化合物、酚類、皂角苷、丹寧、樹脂、香精和各種有機酸,以及其他化合物。The wet parts of this pump are made of full stainless steel material to perform outstanding corrosion resistance to organic acid , organic compound , alkali , neutral solution and a great many of gases , double helix carbon graphite bearing and hardalloy bearing are provided with good abrasion - resisting propertyto ensure the service life of product , it is an optimal pump forhandling corrosive mediums without leakage
功能描述該泵過流部份採用全不銹鋼材料,對有機酸,有機化合物,堿、中性溶液和多種氣體都有良好的耐腐性,雙螺旋槽碳石墨軸承和硬質合金軸套的磨合,具有較強的耐磨性,保證了產品的壽命,是無泄漏輸送腐蝕性介質的理想泵。The wet parts of this pump are made of full stainless steel material to perform outstanding corrosion resistance to organic acid, organic compound, alkali, neutral solution and a great many of gases, double helix carbon graphite bearing and hardalloy bearing are provided with good abrasion - resisting propertyto ensure the service life of product, it is an optimal pump forhandling corrosive mediums without leakage
產品概述:該泵過流部份採用全不銹鋼材料,對有機酸,有機化合物,堿、中性溶液和多種氣體都有良好的耐腐性,雙螺旋槽碳石墨軸承和硬質合金軸套的磨合,具有較強的耐磨性,保證了產品的壽命,是無泄漏輸送腐蝕性介質的理想泵。分享友人