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《物理化学学报》2015,(2):393
1)THERMODYNAMICS,KINETICS,AND STRUCTURAL CHEMISTRY(chemical equilibrium and thermodynamic parameters,calorimetry,nonequilibrium thermodynamics and dissipative structure,statistical thermodynamics,macrokinetics,molecular dynamics,ultrafast dynamics,excited states,solution chemistry,complex fluids,solution structure,atmospheric chemistry,dynamic structure,molecular structure,bulk structure,clusters,spectroscopy)2)THEORETICAL AND COMPUTATIONAL CHEMISTRY(quantum chemistry,statistical mechanics.simulation methods and application,computational chemistry,chemical informatics) 相似文献
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蒙古蒿精油化学成份的研究I. 总被引:1,自引:0,他引:1
The chemical constituents of the essential oil from the leaves of artemisia mongolica Fisch. were separated by gas chromatography employing glass capillary eolumns and identified by GC-MS-COM. 30 components have been separated and identified, i.e. 2-methyl-2-butene, methylene cyclopentane, 7,7-dimethyl-3-methylen-bicyclo-(3, 1, 1) heptane, α-thujene, α-pinene, camphene, 1-octen-3-o1, β-thujene, β-pinene, α-phellandrene, bornylene, p-cymene, terpinen-1-o1, artemisia ketone, γ-terpinene, β-terpineol, 3,7,7-trimethyl-bicyclo-(3, 1,1)-2-heptanol, α-terpinolene, verbenone, linalool iso-thujone, thujone, camphor, isopulegone, isoborneol, terpinen-4-o1, α-terpineol, myrtenol, trans- carveol, cis-carveol. 相似文献
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第二、培養基的條件培養基的功用,一方面是供给菌種生长的需要,另一方面是供给菌種综合产品的原料。其成分可分为两類:第一類为炭水化物,如糖飴,玉黍粉,麥粉,馬鈴薯,紙漿废液,葡萄糖等。這些是酒精,丙酮戊醇,构椽酸,酵母等工業的重要原料。其功用是供给微生物生长的能(Energy)。第二類成分是蛋白性的材料如酪素,玉黍浆(Corn steep)粟米,蛋清,鱼肉,肉膏,蛋白脒, 相似文献
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Multivalent metal-sulfur(M-S,where M=Mg,Al,Ca,Zn,Fe,etc.)batteries offer unique opportunities to achieve high specific capacity,elemental abundancy and cost-effectiveness beyond lithium-ion batteries(LIBs).However,the slow diffusion of multivalent-metal ions and the shuttle of soluble polysulfide result in impoverished reversible capacity and limited cycle performance of M-S(Mg-S,Al-S,Ca-S,Zn-S,Fe-S,etc.)batteries.It is a necessity to optimize the electrochemical performance,while deepening the understanding of the unique electrochemical reaction mechanism,such as the intrinsic multi-electron reaction process,polysulfides dissoluti on and the in stability of metal an odes.To solve these problems,we have summarized the state-of-the-art progress of current M-S batteries,and sorted out the existing challen ges for different multivalent M-S batteries according to sulfur cathode,electrolytes,metallic an ode and current collectors/separators,respectively.In this literature,we have surveyed and exemplified the strategies developed for better M-S batteries to strengthen the application of green,cost-effective and high energy density M-S batteries. 相似文献
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采用ICP—AES法同时测定黑豆和红小豆中Na,Sn,Ca,Zn,Cu,Mg,Al,Fe,P,K,Si,Se,Ba,Mn,M015种元素含量,并对各元素进行了加标回收实验,黑豆和红小豆中各元素的平均回收率在93.11%~102.15%,相对标准偏(RSD)在0.83%0~2.8%,检出限介于0.11~14.09Fg/L。建立了简便、快速、准确和稳定的测定黑豆和红小豆中元素的测定方法。结果显示在黑豆和红小豆中K,Ca,P,Mg,Mn,Fe,Zn等常量元素和微量元素含量较高。红小豆中Ca,Mg,Fe,Zn等营养元素的含量较黑豆中的高。 相似文献
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《广东微量元素科学》2017,(5):63-63
若缺铜,人早衰,细胞损,骨质败,既愚蠢,又笨傻,男变疯,女变呆,多贫血,多畸形,冠心病,又多患,易病危,易得癌,常见病,白癜风,胆固醇,速高升,应早治,不徘徊,食疗法,喜开怀. 相似文献
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粒径分布对水焦浆性质的影响 《燃料化学学报》2015,43(8):940-946
分析研究了不同粒径分布的石油焦成浆性及制备水焦浆的流变性和稳定性。结果表明,石油焦的成浆性较好,成浆浓度近70%,浆体的表观黏度均随浓度的增大而增大。粒径分布越宽,越有利于堆积,堆积效率越高,可制浆浓度越高,制备水焦浆的最佳药剂量越低,采用萘系分散剂制备的水焦浆呈胀塑性流型,粒径分布越宽,胀塑性越弱,利用静置观察法与Turbiscan Lab稳定性分析仪测定相结合评价水焦浆的稳定性,水焦浆的稳定性差,且粒径越大,析水率越低,沉降区的焦粉颗粒越易发生聚结,底部越易产生硬沉淀,稳定性越差。颗粒聚结是水焦浆稳定性的主要影响因素。 相似文献
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Most of the current analytical methods depend largely on laboratory-based analytical techniques that require expensive and bullky equipment,potentially incur costly testing,and involve lengthy detection processes.With increasing requirements for point-of-care testing(POCT),more attention has been paid to miniaturized analytical devices.Miniaturized electrochemical(MEC)sensors,including different material-based MEC sensors(such as DNA-,paper-,and screen electrode-based),have been in strong demand in analytical science due to their easy operation,portability,high sensitivity,as well as their short analysis time.They have been applied for the detection of trace amounts of target through measuring changes in electrochemical signal,such as current,voltage,potential,or impedance,due to the oxidation/reduction of chemical/biological molecules with the help of electrodes and electrochemical units.MEC sensors present great potential for the detection of targets including small organic molecules,metal ions,and biomolecules.In recent years,MEC sensors have been broadly applied to POCT in various fields,including health care,food safety,and environmental monitoring,owing to the excellent advantages of electrochemical(EC)technologies.This review summarized the state-of-the-art advancements on various types of MEC sensors and their applications in POCT.Furthermore,the future perspectives,opportunities,and challenges in this field are also discussed. 相似文献
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《广东微量元素科学》2017,(5):45-45
若缺铁,生贫血,减智力,得痴呆,肝脾肿,无神色,诸细胞,易能缺,一缺乏,肤变白,早治疗,速收效,食疗法,是先决.其一法:取生铁,一百克,先净后,加大枣,放二两,入水煮,去生铁,喝完汤,将大奉,随身装,时时吃,日一剂,二月愈. 相似文献
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常温常湿条件下Au/MeO~x催化剂上CO氧化性能 总被引:12,自引:0,他引:12
利用共沉淀法制备了Au/MeO~x催化剂(Me=Al,Co,Cr,Cu,Fe,Mn,Ni,Zn)。在常温常湿条件下,考察了不同氧化物负载的金基催化剂的CO氧化性能。结果表明,氧化物种类对催化剂的活性和稳定性均有较大的影响。Cu,Mn,Cr等氧化物负载的金基催化剂的活性较差,而Zn,Fe,Co,Ni,Al等金属氧化物负载的金基催化剂可将CO完全氧化,又具有一定的稳定性,在相同反应条件下,CO完全转化时的稳定性顺序为Au/ZnO>Au/α-Fe~2O~3>Au/Co~3O~4>Au/γ-Al~2O~3≈Au/NiO。还发现水对Au/MnO~x催化剂的活性和稳定性有负作用,而对180℃焙烧制备的Au/ZnO-180催化剂的活性和稳定性均有明显的湿度增强作用。 相似文献
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An aminophenol ligand, N,N,N'-tri(2-hydroxy-5-methylbenzyl)-l,2-ethanediamine, was prepared through the Marmich reaction, and structurally characterized by NMR, IR, MS and single-crystal X-ray diffract... 相似文献
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Baolei Wang Hongxue Wang Hang Liu Lixia Xiong Na Yang Yan Zhang Zhengming Li 《中国化学快报》2020,31(3):739-745
A series of novel phenylpyrazole carboxylic acid derivatives containing fluorine moiety,i.e.,diamides 11,simple aryl-bearing amides 12 and acylthioureas 14 were successfully synthesized based on the key fluo ro-containing phe nylpyrazole acid intermediate.The new compounds were identified and confirmed by melting point,1H NMR,13C NMR and elemental analysis or HRMS.The bioassay results indicated that some of the compounds possessed excellent insecticidal activities towards oriental armyworm,diamondback moth and corn borer at low concentrations.For examples,compounds 11a,11e-g and 14b exhibited remarkable larvicidal activities with LC50 values of 0.13-0.39 mg/L and 0.0002-0.0014 mg/L against oriental armyworm and diamondback moth,respectively,were comparable with those of the control chlorantraniliprole.Particularly,lie were found superior to chlorantraniliprole in oriental armyworm tests(LC50:0.23 mg/L vs.0.26 mg/L);11a,lie,11f and 14c in diamondback moth tests with LC50 values of 0.0002 mg/L,0.0002 mg/L,0.0008 mg/L and 0.0005 mg/L,respectively,we re more effective than that of chlorantraniliprole.In addition,12 a also showed a promising insecticidal potential and development/optimization advantage.Compounds 11a,lle-g,12a,14b and 14c could be considered as possible new leading structures for further study.The SAR investigation indicated that the compounds with fluorine motif(e.g.,-F,-CF2H,-CF3)held apparently favorable insecticidal potentials,which provided useful guidance for further design/development of new phenylpyrazole-containing agrochemicals. 相似文献
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《物理化学学报》2015,(4):807
The journal has been indexed in SCIE,CA,SCOPUS,AJ,JICST,and CSTPCD.The average publication time is 71 days for the web version and 139 days for the printed version in 2014Scope of the Journal1)THERMODYNAMICS,KINETICS,AND STRUCTURAL CHEMISTRY(chemical equilibrium and thermodynamic parameters,calorimetry,nonequilibrium thermodynamics and dissipative structure,statistical thermodynamics,macrokinetics,molecular dynamics,ultrafast dynamics,excited states, 相似文献
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热解重油加氢裂化制取高芳潜石脑油的研究 《燃料化学学报》2019,47(11):1329-1336
以哈密热解焦油重质馏分悬浮床加氢裂化后的轻质油为原料,对其性质进行了分析,轻质油保留了煤的基本单元结构特点,富含芳烃类和环烷烃类化合物,氮含量较高;采用200 mL固定床精制-裂化串联装置,对轻质油原料进行了加氢裂化制取石脑油的研究;反应压力15 MPa下,考察了不同温度对加氢裂化反应的影响。结果表明,适宜的裂化段温度为390℃,此温度下,180℃馏分转化率为53.69%,氢耗5.13%,180℃石脑油收率56.8%,裂化后石脑油主要以C_(6-9)类烃类物质为主,其中,环烷烃含量为71.99%,芳烃含量3.13%,芳潜值70.1;以最佳工艺条件下产出裂化石脑油为原料,进行了催化重整制取BTXE的研究,采用石油系中间基石脑油作为对比,裂化石脑油重整后BTXE类物质总产率为55.85%,较石油基石脑油生成量高25.53%,彰显了煤基油的优势和特点,验证了煤热解重油裂化石脑油是制取BTXE类物质良好的原料。 相似文献
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黑冰片为猪科动物野猪(Sus scrofa L)的干燥粪便.初春、秋未采收,除去杂质,晒干,密封煅成炭用,性味为苦、辛、温,功能与主治为清希拉,消食,杀粘,破痞,用于消化不良,希拉痞,粘症[1]. 相似文献