Zinc, which is the second most abundant transition metal ion in human body after iron, plays an important role in cytobiology and cytotroph. Meanwhile, it’s known to us that zinc has taken a share in synthesis of enzyme, structure and function of proteins, even in cellular metabolism and nerve conduction process. The disorder of zinc
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Zinc, which is the second most abundant transition metal ion in human body after iron, plays an important role in cytobiology and cytotroph. Meanwhile, it’s known to us that zinc has taken a share in synthesis of enzyme, structure and function of proteins, even in cellular metabolism and nerve conduction process. The disorder of zinc
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Internet fault diagnosis on time is important to network service providers, and Internet service providers (ISPs). For example, users always choose more reliable ISPs. With the diversity and heterogeneity, Internet fault diagnosis becomes an increasingly challenging problem.At early years, several router-based Internet diagnosis tools need the collaboration of the network nodes, these tools generally need
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With the rapid development of Internet application, IP network becomes more and more complicated. In order to manage network effectively, network administrator needs to make a quantitative analysis of performance metrics for whole network.A scheme which can satisfy the need of general measurement system is proposed and designed according the reference above. We implement an
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The novel, easily available Salicylaldehyde bis-Schiff based colourimetric chemosensors 2-[（2,4-dihydroxyphenyl）methylene]hydrazone （L1）, 2,2′-[1,2-ethanediylbis（nitrilomethy lidyne）]bis[5-（diethylamino）-Phenol （L2） and the new coumarin based colorimetric nickel chemosensor 7-hydroxycoumarin-3 （2-pyridyl）methylene)amine （L3） have been investigated in this work. The structures of these compounds were characterized by mass spectrometry, NMR and elemental analysis. L1 exhibits highly selective and sensitive recognition toward Cu2+ in
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The novel, easily available Salicylaldehyde bis-Schiff based colourimetric chemosensors 2-[（2,4-dihydroxyphenyl）methylene]hydrazone （L1）, 2,2′-[1,2-ethanediylbis（nitrilomethy lidyne）]bis[5-（diethylamino）-Phenol （L2） and the new coumarin based colorimetric nickel chemosensor 7-hydroxycoumarin-3 （2-pyridyl）methylene)amine （L3） have been investigated in this work. The structures of these compounds were characterized by mass spectrometry, NMR and elemental analysis. L1 exhibits highly selective and sensitive recognition toward Cu2+ in
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In recent years, in order to reveal the nature and the formation mechanism of thepulse information, the domestic and foreign scholars have done a lot of work on thepulse-taking device and the detection method of the pulse condition. Various types ofpulse condition devices have been developed. Although the most widely used pressuresensor can acquire and
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Distributed Network Measurement Equipments are capable to effectively monitor network status and locate network faults, as well as provide precious analyzed data for improving the network performance; these equipments are playing crucial roles in the development of Internet. Unfortunately, domestic enterprises fail to provide any related products yet. This work introduces a distributed network measurement
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In the field of modern manufacturing and design,the role of reverse engineering becomes more and more obvious.Reverse engineering has already been a research focus in study of advanced manufacturing.Based on converse thinking, reverse engineering is a process of establishing and resolving of mathematical model.Therefore,the development of reverse engineering is complicated system engineering.Reverse engineering,which refers to
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NMR measurement of the magnetic field is the current method of measuring the magnetic field in a high precision. Because of the gyromagnetic ratio of atomic nucleus can be measured accurate to 10-5～10-7 order of magnitude, the magnetic field measured by NMR measurements also can be measured accurate to 10-5-10-7 order of magnitude. So the
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