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甜杏仁中微量元素的光谱测定 总被引:2,自引:0,他引:2
采用火焰原子吸收光谱法(FAAS)测定了甜杏仁中锰、铁、锌、铜、钴、镁、钠、钾、铅、铬和镍的含量,并用加标回收检验了测定方法的可靠性。结果发现:杏仁中金属元素的回收率在95.00%—108.26%之间;测定的甜杏仁金属元素的含量依次为Na、K、Mg、Zn、Fe、Ni、Mn、Cu、Co、Pb、Cr,其中,甜杏仁中人体必需的微量元素Na、K、Mg、Zn、Fe含量较高。重金属Pb、Cr含量较少。 相似文献
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一、渗透的必要性和可能性 当前,自然科学的发展速度比以往任何时候都快,物理学这门古老的学科也迅速的向纵深、向边缘、向前沿全方位发展。一方面,物理学正高速向其它学科渗透,形成众多的新分支学科和边缘学科。如晶体物理、表面物理、凝聚态物理、粒子物理、生物物理,医学物理、海洋物理、空间物理、地球物理、天体物理、低温物理、音乐物理、光子学、光电子学,等离子体物理学、光谱学、断裂力学、地震力学、建筑声学等。另一方面,物理学还正在各技术应用科学中迅猛发展。如核技术、激光脉冲技术、射流技术、表面处理技术、微电子技术、新能源新材料技术、航空航天技术、谱线分折技术、数控、遥控通讯技术、红外技术、环境保护技术、生物工程技术等等。 与此同时,电视、电脑、电冰箱、电子游戏机、BP机、大哥大、微波炉等大批高新技术产品进入平民百姓家庭;B超、CT扫描、核磁共振仪、激光计数器、光导纤维、程控电话、电子计算机、电子显微镜、射电望远镜、激光排印等各式仪器、各种技术的普遍使用,使生活在20世纪90年代的人们比以往任何时期更能享受 相似文献
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ICP-AES法测定中药中多种元素 总被引:1,自引:0,他引:1
生物体内的微量元素具有含量低、功能作用大的特点,微量元素与人体的免疫、内分泌、生长发育和神经系统的功能等密切相关。其中铜、锌、铁、钴、锰、镍、铬、钼、钒、碘、氟、锡和硅是人体内14种必须的微量元素。近年来对中药中微量元素与疗 相似文献
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介绍使用一个统一的摄谱条件,同时测定矿石、矿物、岩石和土壤中的 Ag、Al、As、B、Ba、Be、Bi、Ca、Cd、Ce、Co、Cr、Cu、Fe、Ga、Ge、Hf、In、La、Li、Mg、Mn、Mo、Nb、Na、Ni、P、Pb、Re、Sb、Sc、Si、Sn、Ta、Te、Th、Ti、Tl、V、W、Y、Yb、Zn、Zr 等44个元素的半定量分析方法。选用硫酸锶加碳粉(13 87)为缓冲剂,锶为内 相似文献
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1客观世界运动的层次客观世界的运动按层次可以分为:物理运动(机械、热、电磁、混沌与分形、量子等)、化学运动(原子、分子、生物小分子、生物大分子等)、生命运动(生物分子、细胞、器官、生命整体、生物群落等)、宇宙运动(星体、星系、宇宙的形成与演化等)、精神运动(反应、感觉、记忆、理解、认知等)、社会运动(群体、民族、国家、国际交流、社会形态、政治、经济、军事、文 相似文献
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A. I. Trokhimets 《Journal of Applied Spectroscopy》1995,62(1):88-90
Institute of Physicoorganic Chemistry, Academy of Sciences of Belarus, 220603, Minsk, Ul. Surganova, 13, Belarus. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 1, pp. 104–107, January–February, 1995. 相似文献
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F. Gandini A. Bruschi S. Cirant G. Gittini G. Granucci V. Muzzini C. Sozzi N. Spinicchia 《International Journal of Infrared and Millimeter Waves》2007,28(2):121-128
A spherical compact matched load, for high vacuum operation suited for short pulses (2 MW, 0.1 s) precise measurement has
been designed to test high power gyrotrons Bruschi, Gandini, Muzzini, Spinicchia, Cirant, Gittini, Granucci, Mellera, Nardone,
Simonetto, and Sozzi (Fusion Eng. Des. 56–57:649–654, 2001); Bruschi, Cirant, Gandini, Granucci, Mellera, Muzzini, Nardone,
Simonetto, Sozzi, and Spinicchia (Nucl. Fusion 43:1513–1519, 2003); Bruschi, Cirant, Gandini, Gittini, Granucci, Mellera,
Muzzini, Nardone, Simonetto, Sozzi, Spinicchia, Angella, and Signorelli (Development of CW and short-pulse calorimetric loads
for high power millimeter-wave Beams, 23rd Symposium on Fusion Technology, September 20–24, 2004, Venice, Italy). In order
to enhance the power handling capability of the load and to reduce the operation problems that may arise from an excessive
reflection from the load, a ray tracing code has been written to model the power distribution on the inner surface and the
pattern of the reflected radiation. The outcome of this code has been used to select a more convenient profile for the spreading
mirror of the load and to optimize a pre-load specially conceived to minimize the power reflected fraction. 相似文献
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N. K. Morozova E. I. Smirnova I. A. Karetnikov O. R. Golovanova V. G. Galstyan V. S. Zimogorskii 《Journal of Applied Spectroscopy》1996,63(4):543-547
Moscow Power Engineering Institute, 14, Krasnokazarmennaya Str., Moscow, GSP, 105835, Russia. Translated from Zhurnal Prikladnois
Spektroskopii, Vol. 63, No. 4, pp. 646–651, July–August, 1996. 相似文献
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É. S. Zolotovitskaya L. V. Glushkova T. V. Kozulya A. B. Blank 《Journal of Applied Spectroscopy》1997,64(3):410-413
A method of the atomic-emission spectrum analysis of soil has been developed for control of the accumulation of technogenic
impurities in environmental objects. A sample, after calcination at 550°C, is evaporated in an arc discharge. Spectra are
recorded by a DFS-8 spectrograph. Simultaneously, determination is made of Li, Ba, Sr, Cu, Zn, Cr, Ni, Co, Pb, Bi, Mo, V,
Ge, Ga, Y, Nb, Sn, Cd. For the majority of the elements the detection limits are lower than their percent abundance in the
crust and their maximum permissible concentrations.
Institute for Single Crystals, National Academy of Sciences of Ukraine, 60, Lenin Ave., Khar'kov, 310001, Ukraine. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 3, pp. 396–399, May–June, 1997. 相似文献
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ICP-AES雾化法氢化法联合测定白族产妇及新生儿发中常微量元素 总被引:2,自引:0,他引:2
本文报道用ICP-AES同时测定人发中24种元素的方法。采用10mg/ml样品,4.8mol/L盐酸溶液,用基体匹配法校正干扰,分别用雾化法和氢化法测定,用人发标准检验方法和结果的准确性。较满意地测定了Zn等18种元素。91例母婴发中的Zn、Fe、Sr、Mg、Cd、P、Ni、Se、As和Mo等元素呈显著的正相关性。 相似文献
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I. D. Lomako T. V. Smirnova A. N. Igumentsev A. A. Mel'nikov 《Journal of Applied Spectroscopy》1996,63(4):561-567
Institute of Physics of Solids and Semiconductors, Academy of Sciences of Belarus, 17, P. Brovka Str., GSP, Minsk, 220072.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 63, No. 4, pp. 667–675, July–August, 1996. 相似文献
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M. K. Samokhvalov 《Journal of Applied Spectroscopy》1995,62(3):555-558
Ul'yanovsk State Technical University, 32, Severnyi Venets St., Ul'yanovsk, 432027, Russia. Translated from Zhurnal Prikladnoi
Spektroskopii, Vol. 62, No. 3, pp. 182–185, May–June, 1995. 相似文献
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Due to the drawbacks in Support Vector Machine(SVM)parameter optimization,an Improved Shuffled Frog Leaping Algorithm(Im-SFLA)was proposed,and the learning ability in practical speech emotion recognition was improved.Firstly,we introduced Simulated Annealing(SA),Immune Vaccination(Iv),Gaussian mutation and chaotic disturbance into the basic SFLA,which bManced the search efficiency and population diversity effectively.Secondly,Im-SFLA Was applied to the optimization of SVM parameters,and an Im-SFLA-SVM method Was proposed.Thirdly,the acoustic features of practical speech emotion,such aS ridgetiness,were analyzed.The pitch frequency,short-term energy,formant frequency and chaotic characteristics were analyzed corresponding to different emotion categories,and we constructed a 144-dimensional emotion feature vector for recognition and reduced to 4-dimension by adopting Linear Discriminant Analysis(LDA) Finally,the Im-SFLA-SVM method Was tested on the practical speech emotion database,and the recognition results were compared with Shuffled Frog Leaping Algorithm optimization-SVM(SFLA-SVM)method,Particle Swarm Optimization algorithm optimization-SVM(PSo-SVM) method,basic SVM,Gaussian Mixture Model(GMM)method and Back Propagation(BP)neural network method.The experimentM resuits showed that the average recognition rate of Im-SFLA-SVM method was 77.8%,which had improved 1.7%,2.7%,3.4%,4.7%and 7.8%respectively,compared with the other methods.The recognition of fidgetiness was significantly improve,thus verifying that Im-SFLA was an effective SVM parameter selection method,and the Im-SFLA-SVM method may significantly improve the practical speech emotion recognition. 相似文献
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利用ICP-AES分析技术,通过对样品处理、元素分析谱线、酸度等因素进行试验研究,综合确定了分析条件,对铜电解液中杂质元素(Fe、Ni、Pb、Bi、Sb、Zn、As)进行了ICP-AES测定。结果表明,ICP-AES测定铜电解液中Fe、Ni、Pb、Bi、Sb、Zn和As,可以满足铜电解生产的需要,为高纯阴极铜的生产起了指导作用。 相似文献