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1.
竹红菌甲素和吲哚类化合物的相互作用 总被引:2,自引:2,他引:2
本文利用吸收光谱,荧光光谱研究了竹红菌甲素(以下简称HA)和吲哚类化合物的相互作用。发现HA和吲哚类化合物在一定条件下可形成复合物。这种复合物带有电荷转移性质。吲哚环上带有给电子取代基,位阻小,溶剂的极性大和溶液呈中性有利于该复合物的形成。 相似文献
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用溶剂萃取法从甲基萘油中萃取吲哚.主要研究了不同溶剂、溶剂比、萃取温度、萃取时间和萃取级数对BO3和DMNO的吲哚萃取率的影响,结果表明,两种甲基萘油均采用正庚烷-三甘醇作萃取剂效果较好,BO3:三甘醇:正庚烷=1:1:2、DMNO:三甘醇:正庚烷=2:1:2为佳,萃取温度为30~40℃时较好,萃取理论级数取N=10比较适合,但萃取时间对BO3、DMNO的吲哚萃取率的影响较小.在对常规的双溶剂萃取研究的基础上,提出了吲哚加盐萃取方法.结果表明,在吲哚萃取过程中加入NaSCN和CH3COOK,不但能降低非极性物质在极性溶剂中的溶解度,提高吲哚的萃取选择性,而且还能够提高吲哚的萃取率. 相似文献
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Habibullah Khalilullah Deepak K. Agarwal Mohamed J. Ahsan Surender S. Jadav Hamdoon A. Mohammed Masood Alam Khan Salman A. A. Mohammed Riaz Khan 《International journal of molecular sciences》2022,23(12)
Newly designed series of indole-containing pyrazole analogs, pyrazolinylindoles, were synthesized, and their structures were confirmed based on the spectral data of the 1H NMR, 13C NMR, and HR-MS analyses. Preliminary anti-cancer activity testings were carried out by the National Cancer Institute, United States of America (NCI, USA). Compounds HD02, HD05, and HD12 demonstrated remarkable cytotoxic activities against nine categories of cancer types based cell line panels which included leukemia, colon, breast, melanoma, lungs, renal, prostate, CNS, and ovarian cancer cell lines. The highest cytotoxic effects were exhibited by the compounds HD02 [1-(5-(1-H-indol-3-yl)-3-(p-tolyl)-4,5-dihydro-1H-pyrazol-1-yl)-2-phenylethanone], HD05 [1-(3-(4-chlorophenyl)-5-(1H-indol-3-yl)-4,5-dihydro-1H-pyrazol-1-yl)-2-phenoxyethanone], and HD12 [(3-(4-chlorophenyl)-5-(1H-indol-3-yl)-4,5-dihydro-1H-pyrazol-1-yl)(pyridin-4-yl)methanone] against some of the 56 types of NCI-based cell lines in different panels. Compound HD05 showed the maximum range of cancer cell growth inhibitions against all categories of the cell lines in all nine panels. On average, in comparison to the referral standard, imatinib, at a dose level of 10 µM, the HD05 showed significant activity against leukemia in the range of 78.76%, as compared to the imatinib at 9% of cancer cells’ growth inhibitions. Molecular docking simulation studies were performed in silico on the epidermal growth factor receptor (EGFR) tyrosine kinase, in order to validate the activity. 相似文献
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为实现色氨酸酶高效、低成本催化合成L-色氨酸,利用p ET30a为载体在宿主细胞E.coli BL21(DE3)中重组表达了产气肠杆菌(Enterobacter aerogenes)来源的色氨酸酶,以丙酮酸、吲哚和氨为底物,探究其酶学性质,考察了反应温度、起始p H、底物摩尔比对酶促反应的影响,并利用丙酮酸发酵液为底物酶法合成L-色氨酸。结果表明,色氨酸酶重组表达成功,色氨酸酶最佳反应条件为:温度35℃,起始p H=9.0,底物摩尔比n(吲哚)∶n(丙酮酸)=0.6∶1,底物丙酮酸浓度为0.17 mol/L。利用重组色氨酸酶全细胞催化100 m L浓度为0.57 mol/L丙酮酸发酵液,流加浓度为4.27 mol/L吲哚酒精溶液6.5 m L,反应28 h后,L-色氨酸浓度达0.25 mol/L,吲哚摩尔转化率达91.8%。 相似文献
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Ho-Cheol Kang 《Polycyclic Aromatic Compounds》2016,36(5):745-757
The separation of nitrogen heterocyclic compounds (NHC) contained in a model coal tar fraction comprising four kinds of NHC [indole (In), quinoline (Q), iso-quinoline (iQ), quinaldine (Qu)], three kinds of bicyclic aromatic compound (BAC) [1-methylnaphthalene (1MN), 2-methylnaphthalene (2MN), dimethylnaphthalene (DMN) mixture with ten structural isomers (DMNs; regarded as one component)], biphenyl (Bp), and phenyl ether (Pe) was examined by batch cocurrent three stages equilibrium extraction. The model coal tar fraction used as a raw material in this work was prepared according to the components and compositions contained in coal tar fraction (distilled temperature ranges: 240–265°C). An aqueous solution of formamide and that of methanol were used as solvent, respectively. The distribution coefficient of the entire NHC (NHCs) summed four kinds of NHC was much larger than that of the entire BAC (BACs) summed three kinds of BAC, Bp, and Pe. Irrespective of solvent used in this work, the NHCs was recovered more than 90% through three stages of the equilibrium extraction. The selectivity of NHCs based on BACs obtained through the 3 stages equilibrium extraction using an aqueous solution of formamide was higher 3.6–8 times than that using an aqueous solution of methanol. Furthermore, we investigated the recovery process of NHCs contained in coal tar fraction using the formamide experimental results obtained from this work. 相似文献
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吲哚是一种化学稳定剂,为探讨吲哚掺入CuPc薄膜对NO_2气敏特性的影响,用共沉积的方法在CuPc薄膜中掺入吲哚,从制备的CuPc夹层光电池测试中,探讨了吲哚对CuPc薄膜的光电导的影响;由X-线衍射分析了吲哚对CuPc薄膜的结构的影响,测试了掺杂对NO_2敏感特性的影响,结果表明,掺入吲哚可抑制CuPc的光电导,提高其气敏的稳定性;同时使得CuPc分子在基片上的排列趋向单一有序,对改善CuPc薄膜气敏的灵敏度和时间特性具有积极意义。 相似文献
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M. Düdükcü 《工业材料与腐蚀》2011,62(3):264-268
The inhibitor performance of 5‐aminoindole (5‐AI) on mild steel corrosion in 0.5 M HCl was investigated in relation to the inhibitor concentration using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and linear polarization (LPR) methods. The effect of immersion time on the corrosion behavior of mild steel was also studied. The impedance data obtained were fitted and modeled using an equivalent circuit model. The results show that 5‐AI is an effective inhibitor and has an inhibition efficiency of 90% at 1 × 10?2 M additive concentration. The adsorption behavior of 5‐AI was also investigated. For this purpose, the adsorption equilibrium constant (Kads), and the free energy of adsorption (ΔGads) were calculated and discussed. It was found that 5‐AI acts as mixed‐type inhibitor and obeys Langmuir adsorption isotherm with a free energy of adsorption of ?27.71 kJ/mol. 相似文献