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地球物理数字滤波引论第1版

Modulated Quasi-plane Tunneling Current

1980年

作者：（瑞典）o.库尔哈尼克（o.Kulhanek）李华英孙克忠译

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International Journal of Minerals,Metallurgy and Materials 1999年第1期13卷 44-46页

作者： Peng Feng Wenmin Dai (China Center of Advanced Science & Technology (World Laboratory ) P.o. Box 8730, Beijing 100080, China)(Applied Science School, University of Science and Technology Beijing, Beijing 100083, China) China Center of Advanced Science and Technology (World Laboratory) P.O. Box 8730 Beijing 100080 China Applied Science School University of Science and Technology Beijing Beijing 100083 China

A new tutmeling junction can be formed by an insulator layer inserting into a quantum well, and in the quantum well, a quasi-plane tunneling current can be formed by applying a tunneling voltage. If a P-N junction is grown on the quantum well, the tunneling current can be modulated by a P-N junction-bias voltage. The modulated quasi-plane tunneling current is not only related to the bias voltage, but also to the depth of the quantum well. It is analyzed that the P-N junction-bias voltage how to affect the tunneling current and a method of measuring the depth of the quantum well is presented.

关键词： quantum well tunneling current semiconductor device

Cascadability of Uniform Fibre Bragg Grating for 40 Gbit/s RZ-ooK to NRZ-ooK Conversion

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optics and Photonics Journal 2013年第2期3卷 337-341页

作者： o. ozolins V. Bobrovs G. Ivanovs Institute of Telecommunications Riga Technical University Riga Latvia

The cascadability of uniform fibre Bragg grating for 40 Gbit/s return to zero on-off keying to non-return to zero on-off keying format conversion has been shown using optSim simulation program. The main idea of this approach is use of specially designed uniform fibre Bragg grating with appropriate transfer function for shaping of 40 Gbit/s return to zero on-off keying optical spectrum. Error free performance is achieved after four cascades of uniform fibre Bragg grating with different reflectivity values.

关键词： All-optical Devices Fibre Bragg Grating Fibre optic Transmission Systems Format Conversion Intensity Modulation optical Signal Processing

Advances in the development of new biomarkers for Alzheimer’s disease

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Translational Neurodegeneration 2022年第1期11卷 601-624页

作者： Timofey o.Klyucherev Pawel olszewski Alena A.Shalimova Vladimir N.Chubarev Vadim V.Tarasov Misty M.Attwood Stina Syvänen Helgi B.Schiöth Department of Neuroscience Functional PharmacologyUniversity of Upp-salaUppsalaSweden Department of Pharmacology Institute of PharmacyI.M.Sechenov First Moscow State Medical UniversityMoscowRussia Institute of Translational Medicine and Biotechnology I.M.Sechenov First Moscow State Medical UniversityMoscowRussia Department of Public Health and Caring Sciences Rudbeck LaboratoryUppsala UniversityUppsalaSweden.

Alzheimer’s disease(AD)is a complex,heterogeneous,progressive disease and is the most common type of neurodegenerative *** prevalence of AD is expected to increase as the population ages,placing an additional burden on national healthcare *** is a large need for new diagnostic tests that can detect AD at an early stage with high specificity at relatively low *** development of modern analytical diagnostic tools has made it possible to determine several biomarkers of AD with high specificity,including pathogenic proteins,markers of synaptic dysfunction,and markers of inflammation in the *** is a considerable potential in using microRNA(miRNA)as markers of AD,and diagnostic studies based on miRNA panels suggest that AD could potentially be determined with high accuracy for individual *** of the retina with improved methods of visualization of the fundus are also showing promising results for the potential diagnosis of the *** review focuses on the recent developments of blood,plasma,and ocular biomarkers for the diagnosis of AD.

关键词： Alzheimer’s disease Amyloid beta peptides Biomarkers Blood Cytokines Inflammation MicroRNA ocular biomarkers

Effect of Different Supplementation Levels of Soybean Flour on Pearl Millet Functional Properties

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Food and Nutrition Sciences 2012年第1期3卷 1-6页

作者： Maha A. M. Ali Abdullahi H. El Tinay Abd Elmoneim o. Elkhalifa Limya o. Mallasy Elfadil E. Babiker 不详

Pearl millet cultivar (Dempy) was supplemented with soybean flour to raise the protein content by 5%, 10% and 15%. Defatted soybean flour, pearl millet flour and their composite flour had varying functional properties. Water and fat absorption, bulk density, nitrogen solubility and dispersibility were higher for soybean flour compared to that of pearl millet flour. Therefore, such properties were improved significantly (P ≤ 0.05) for pearl millet with increasing the level of soybean supplementation. The emulsifying and foaming properties of pearl millet flour were poor but after supplementation with soybean they significantly (P ≤ 0.05) improved. Supplementation of pearl millet flour with soybean had no effect on least gelation concentration of millet. The implication of these results will be realized in designing protein-enriched products based on pearl millet flour, especially for pearl millet–growing regions in the under-developing countries.

关键词： Pearl Millet Soybean Supplementation Functional Properties

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含金矿砂和砾岩的选矿

含金矿砂和砾岩的选矿

1980年

作者：（苏）o·B·扎米亚廷

本书列举了含金砂矿床的性质、物质组成和工艺特征，阐述了使用各种设备选别矿砂的实践，介绍了重选新设备研制和使用方面的最新成果。

ISBN: (纸本)15062·3474

本书列举了含金砂矿床的性质、物质组成和工艺特征，阐述了使用各种设备选别矿砂的实践，介绍了重选新设备研制和使用方面的最新成果。

关键词：砂金矿选矿砾岩

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原子、大自然与人类

Physico-Chemical and Petrographic Characterization of Carbonated Rocks of Mintom (South-Cameroon) and Their Potential Uses

丛书名：原子能知识丛书

1982年

作者：（美）N.o. 海因斯唐霞译

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International Journal of Geosciences 2016年第5期7卷 775-783页

作者： Zo’o Zame Philémon Mpakam Hernanie Grelle Samba Assomo Philippe Department of Earth Sciences Faculty of Sciences University of Yaoundé I Yaoundé Cameroon The Higher Institute of the Sahel University of Maroua Maroua Cameroon

The characterization of carbonated rocks of Mintom allowed identifying three features (massive limestone, banded limestone and dolomite). Samples taken in these features were subjected to the physico-chemical analyses and to the mechanical tests. The results obtained show a convergence in the mineralogical composition in particular in the calcareous features (smectite, micas and calcite);the dolomite feature being mainly constituted by dolomite associated with the smectite. The chemical composition allows finding contents raised in Cao, in all the samples. However, in the dolomite and the banded limestone, the concentrations in Mgo and in Sio2 are also important. The mechanical properties showed a good compression resistance for the massive limestone and the dolomite, the mechanical behavior of the banded limestone being low. The exploitation of these results allows recommending carbonated rocks of Mintom in the production of the clinker, agricultural amendments and in the constructions of the civil engineering.

关键词： Mintom Carbonated Rocks Characterization Physico-Chemical Petrographic

Plane Stagnation Double-Diffusive MHD Convective Flow with Convective Boundary Condition in a Porous Media

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American Journal of Computational Mathematics 2012年第3期2卷 223-227页

作者： okedayo T. Gideon S. o. Abah Department of Mathematical Sciences Ondo State University of Science and Technology Okitipupa Nigeria Department of Mathematics Statistics and Computer Science Kaduna Polytechnic Kaduna Nigeria

A numerical analysis has been carried out to study the problem of plane stagnation double-diffusive MHD convective flow with convective boundary condition in a porous media. The governing nonlinear partial differential equations have been reduced to systems of nonlinear ordinary differential equations by the similarity transformations. The transformed equations are solved numerically by using the classical fourth order Runge-Kutta method together with the shooting technique implemented on a computer program. The effects of the physical parameters are examined on the velocity, temperature and concentration profiles. Numerical data for the skin-friction coefficients, Nusselt and Sherwood numbers have been tabulated for various parametric conditions and are also shown graphically and discussed.

关键词： Plane Stagnation Double-Diffusive MHD Convective Flow and Porous Media