Spectroscopy Reference Materials

Description: In the construction industry, concrete is a widely used functional material. Solid concrete has a large number of pores. Those pore states are different and the different states will result ...

Description: After the slaughter of livestock, fresh meat still maintains the cell structure. The structure of the muscle tissue and the processing method of the fresh meat will affect the water distribution in ...

Description: Core pore size distribution refers to the percentage of pore sizes at all layers in the core, it's calculated by quantity or volume. The layered pore size distribution refers to the layer ...

Description: Live mouse body composition helps study on the mouse model of intrahepatic fat content. ...

Description: Losing weight has become a problem that all human beings must face. Studying weight loss has become an important task for today's biological researchers. Often, mice are used as experimental subjects ...

Description: The pulsed NMR also called Time domain NMR, the short name is TD NMR. It uses physical methods to display abstract theories using multimedia, allowing us to see the imaging effects intuitively and ...

Description: Nowadays, Obesity has become a public health problem that endangers human health globally. Obese people are more likely to have high blood pressure, diabetes, fatty liver than normal people, and ...

Description: NMR is a rapid, simple and non-damaging technique for the determination of seeds oil content. This technology has been used for the determination of different seeds oil content. Such as rapeseed, ...

Description: In biomedical clinical animal experiments, targeted agent contrast agent research, anatomy teaching, etc., in vivo imaging of small animals such as mice, rabbits, and monkeys is often performed, and ...

Description: Solid Fat Content (SFC) determination is basically accepted analysis of fats or oils in the food industry and manage & control the quality of these products. Compare to the traditional extraction ...

Description: Spin finish is an important quality control parameter in textile, it's directly determines whether the fiber can meet the requirements of use. Uneven spin finish is a common problem in chemical fiber ...

Description: Fiber oiling rate is an important quality control parameter, which directly determines whether the fiber can meet the requirements of use. Uneven oil content is a common problem in chemical fiber ...

Description: Time-domain NMR is widely used in scientific research and industrial quality control, with applications spanning food, agriculture, material science, petroleum energy, nano-pharmaceuticals... such as ...

Description: Low-field nuclear magnetic resonance (Low Field NMR) has great potential to study water transport and micro-structure of water mobility-based polymer networks. Unlike high-resolution NMR, low-field ...

Description: Low Field nuclear magnetic resonance (Low Field NMR) technology has the advantages of non-destructive and non-invasive technology, and has great potential in the visual detection of seed moisture, ...

Description: The benchtop NMR analysis technique is based on the direct measurement of the nuclear magnetic resonance (NMR) signal of fluorine 19. Since the fluorine content is proportional to the intensity of the ...

Description: Small Animal MRI is a powerful non-invasive tool that can be used to detect a wide variety of lesions. ...

Description: Doctor Batsberg Pedersen et al. first introduced low-field NMR to analyze wax precipitation in crude oil. They compared the amount of precipitated wax of 17 crude oils with the amount of wax ...

Description: In different application directions, the properties of the hydrogels that need to be tracked and detected are different, and the detection methods used are also different, which brings inconvenience ...

Description: In biomedical clinical animal experiments, targeted agent contrast agent research, anatomy teaching, etc., in vivo imaging of small animals such as mice, rabbits, and monkeys is often performed, and ...

Description: Coffee beans refer to the fruit of plants used to make coffee. The oil content and water content of coffee beans determine the taste of coffee. Different roasted coffee beans will result in different ...

Description: The pulsed MRI also called Time domain NMR, the short name is TD NMR, it uses physical methods to display abstract theories using multimedia, allowing us to see the imaging effects intuitively and ...

Description: Winter wheat is planted in slightly warmer places, generally sown from mid to late September to early October and matures from the end of May to mid-to-late June of the following year. For example, ...

Description: Cold stress is an important factor affecting the geographical distribution and growth of plants. Cold temperatures can damage plants, especially when sudden frosts occur, resulting in reduced crop ...

Description: Cotton fiber is a seed fiber formed by elongation and thickening of the epidermal cells of the fertilized ovule, which is different from the general bast fiber. Its main constituent is cellulose. ...

Description: Why Measure Oil Content of wool fibers? ...

Description: In the field of food industry, the formation of oil crystal network consists of two stages. One stage is rapid cooling and kneading on the production line to rapidly crystallize the oil, resulting in ...

Description: Three different relaxation mechanisms, free relaxation, surface relaxation and diffusion relaxation, exist in the NMR relaxation of rock pore fluids, and generally the three relaxation behaviors ...

Description: Hydraulic fracturing technology can improve crude oil production in tight formations, and the impact of fractures on rock pore recovery is the focus of research. Rock pore structure changes during ...

Description: NMR is a physical phenomenon. As early as 1945, the Purcell and Bloch groups independently discovered the NMR phenomenon. As an analytical method, it is widely used in the fields of physics and ...

Description: Fiber Oiling also called Spin Finish ...

Description: The wettability of particle surface is of great significance to powder dispersion and is the theoretical basis for powder dispersion, solid-liquid separation, surface modification and granulation. The ...

Description: The uniformity of the magnetic field is very critical to MRI. This article briefly introduces the shimming method of Benchtop NMR. ...

Description: Jatropha carcas is a bio-energy tree. The oil content of Jatropha curcas is as high as 30% to 47%, and the oil content of the seed kernel is 40% to 60%, which is higher than that of many oil crops. ...

Description: Fluorine content can be measured quickly and accurately using low-field NMR, independent of fluoride compounds and toothpaste formulations. The method is fast, easy to operate and calibrate, and ...

Description: The degree of cross-link, also known as the cross-linking density, is usually expressed in terms of cross-link density or the number-average molecular weight between two adjacent cross-link points or ...

Description: What is low-field NMR? NMR instruments can be divided into the following categories according to the strength of the magnetic field ...

Description: Using low-field NMR to elucidate changes in moisture distribution and state of wet porous fabrics during simulated drying. The fabrics are dried under different moisture regain conditions and there ...

Description: Time-domain NMR (TD-NMR) is a magnetic resonance technique based on relaxation time detection. Time-domain nuclear magnetic resonance is generally tested and analyzed through T1 and T2 relaxation ...

Description: A novel compact high-performance small animal MRI platform takes a novel magnet design and application-based approach to reduce the cost and complexity of conventional systems. The system is mobile ...

Description: During the production of chemical powders (such as sulfur), a certain amount of oil is added according to product quality and characteristics to improve product performance and facilitate production ...

Description: Coated fabrics are fabrics or cloths that have been treated with a special process. Mainly, on the basis of the cloth, special technology is used to coat materials with special functions, so that the ...

Description: During the production of chemical powders (such as sulfur), a certain amount of oil is added according to product quality and characteristics to improve product performance and facilitate production ...

Description: Low-field NMR technology is a fast, accurate and non-destructive testing method, which can be used for the determination of water content in tea. ...

Description: Elastomer materials have a wide application. Affected by the temperature, time, pH and other factors, elastomer materials will degrade and age, which cannot meet the requirement. Therefore, it is ...

Description: On October 23-26, 2019, the 18th Beijing Analytical and Testing Academic Conference and Exhibition (BCEIA 2019) was opened at the Beijing National Convention Center. Niumag analysis and MRI analyzers ...

Description: On October 23, 2019, the biennial feast of the Chinese scientific instrument industry - the 18th Beijing Analytical and Testing Academic Conference and Exhibition (BCEIA2019) was held at the National ...

Description: Natural gas is self-storage. It’s generated during the process of coal formation and exists in the underground coal seams and surrounding rocks in the adsorption and free state. The data show ...

Description: SBR is also known as polystyrene butadiene copolymer. Its physical mechanism performance, processing performance and product performance are close to natural rubber. Some properties such as wear ...

Description: Fat content is an important nutritional and quality control parameter during feed production. The energy of fat is high, Increasing the fat content in the feed can improve the energy level and save ...

Description: From the perspective of the technical parameters of NMR, the most commonly used ones include relaxation time (T2 relaxation mostly), nuclear magnetic imaging (MRI) and two-dimensional nuclear magnetic ...

Description: On November 14-16, the season of the autumn season, the country of Tianfu, the 11th National Low Field Nuclear Magnetic Resonance Technology and Application Seminar ended successfully in Chengdu. More ...

Description: Long-term freezing will cause damage and deterioration of porous rocks, stone relics and concrete buildings in cold regions. The freezing of pore water is the cause of freezing damage. In the past, ...

Description: Typical fully saturated sandstone T2 spectrum at room temperature contains three peaks (as shown in figure 3), with A dominated by bound water (76%), B capillary water (14%) and C free water ...

Description: The air temperature in the tank and the rock surface temperature were tested, and the results were consistent with the set temperature range (see figure 5).The fully saturated coal sample has thermal ...

Description: In the material industry, many materials will add a certain amount of rubber to achieve the purpose of material modification. The amount of rubber in various materials directly affects the physical ...

Description: NMR instruments can be divided into two categories according to different scanning methods: one is continuous wave NMR instruments, and the other is pulsed NMR instruments based on pulsed magnetic ...

Description: The gas-water seepage ability has an important influence on the production of coalbed methane well. The gas-water two-phase flow process is accompanied by every link of coalbed methane development, ...

Description: According to figure 3, the low-order coal has two distinct continuous spectral peaks, and the peak on the left is roughly located between 0.1~1ms at the relaxation time, representing the surface ...

Description: Drying is an important part in food, medicine and other materials processing, can prolong the shelf life, keep the original quality and taste of the modern food processing method, drying process in ...

Description: Recently, the research institute of science and technology strategy consulting of the Chinese academy of sciences, the literature information center of the Chinese academy of sciences and kerui wei ...

Description: Obesity has become a public health problem that endangers human health globally. Obese people are more likely to have high blood pressure, diabetes, fatty liver than normal people, and severe obesity ...

Description: NMR is sensitive to hydrogen-containing materials in porous media and is a non-destructive and effective method for characterizing the physical properties of rocks in oil-bearing reservoirs. Proton ...

Description: Studies have shown that a person consumes 8,469 kilograms of oil during his or her lifetime just to feed, clothe, clothe and move around. As an important strategic mineral resource, petroleum and ...

Description: More than 70 years ago, a brilliant scientist first measured nuclear magnetic spins, work that eventually won him a Nobel Prize in 1943.From the mid-1950s to 2010, a small group of companies inspired ...

Description: The quality and taste of chocolate largely depend on its ingredients. The fat content in chocolate is an important physical and chemical index to measure its quality. At present, the fat content can ...

Description: According to related studies, the three peaks of a typical T2 spectrum correspond to micropores, mesopores, and macropores, respectively. Shale contains a large number of mesopores, more micropores ...

Description: The T2 spectrum of shale NMR is affected by the content of quartz and the number of dissolved holes. The T2 spectrum of shale under saturated kerosene is usually bimodal or multimodal, with micropores ...

Description: Nuclear magnetic resonance (NMR) is a cross-cutting technique for rapid detection of biological samples, also known as magnetic relaxation switching (MRSw) technology. The technology, which combines ...

Description: Coal water according to the different can be divided into the adsorption state of occurrence state of water (adsorbed water (mainly small hole), capillary bound water, capillary water (within Yu ...

Description: Combined with the judgment that the former diffusion water is mainly adsorbed water and the former drip water is mainly free water, it is not difficult to get the conclusion: 1. The adsorption ...

Description: The dielectric properties, wave absorbing properties and related electromagnetic indicators of different starchy materials are reviewed. The possible structural changes of starch in the microwave ...

Description: Shale has low permeability, low porosity, high clay content, and high organic matter content. The lacustrine shale has strong heterogeneity and variable organic matter content. Stratification is a ...

Description: Fluorescence is the molecular absorption of light energy at one wavelength and its nearly instantaneous re-emission at another, usually longer, wavelength. Some molecules fluoresce naturally and ...

Description: Speaking of nuclear magnetic resonance (NMR), the first reaction of many people is the examination we usually do in the hospital-magnetic resonance imaging (MRI). Due to the lack of certain scientific ...

Description: Compact nuclear magnetic resonance (Compact NMR) is a unique form of NMR technology. In recent years, with the advantages of convenience, greenness and accuracy, a large number of new methods and ...

Description: Nuclear Magnetic Resonance Imaging (NMRI, Nuclear Magnetic Resonance Imaging), also known as Magnetic Resonance Imaging (MRI, Magnetic Resonance Imaging), is a kind of nuclear physical phenomenon. The ...

Description: Rock is a porous medium with complex pore structure, and it is also the primary research object in the field of oil and gas exploration and development. At present, low-field nuclear magnetic ...

Description: The Benchtop NMR T2 spectrum distribution curve of the carbon dioxide miscible flooding process is shown in Figure 5. Under the same parameter, the signal intensity is positively related to the number ...

Description: Expansive soil is a special clay with high expansion, multi-cracks, and over-consolidation characteristics, distributed in more than 40 countries including China, the United States and Canada. NMR ...

Description: Figure 2 shows the soil sample expansion curve under 0-4 dry and wet cycles. NMR Analyzer Because the soil sample is laterally restricted by the ring knife, only vertical deformation occurs. The ...

Description: Beef is rich in nutrients and perishable and is a common meat in daily diets around the world. Low temperature can inhibit the growth of microbes and enzyme activity in meat, but chilled beef will ...

Description: When performing a medical examination in a hospital, doctors often recommend that you do some necessary examination items, such as x-ray, CT, B-ultrasound, and nuclear magnetic resonance. So, what is ...

Description: In the drying stage, the shrinkage of the pores is exacerbated by the surface tension of the water, resulting in unrecoverable deformation; as the residual deformation accumulates, the expansion ...

Description: The NMR family is huge and complex, including NMR spectroscopy, MRI, and relaxation NMR. Frequently heard are NMR spectroscopy, human body MRI, low field NMR, electron paramagnetic resonance, variable ...

Description: Measurement of solid fat content (SFC) is a common step in the food industry. Solid fat content analysis is very important for food manufacturers producing fatty based foods. Traditional extraction ...

Description: As we know the principle of NMR test pore distribution, the first step is to fully saturate the sample with water, and then measure the original porosity and pore size distribution of the sample ...

Description: The water wettability of coal pores directly reflects the degree to which the pores on the coal surface are filled with water. The results show that with the increase of pretreatment time, the ...

Description: T2 relaxation time and its corresponding amplitude are given by NMR T2 relaxation spectrum. The T2 relaxation time reflects the dynamic characteristics of water molecules and is related to the size ...

Description: Low field NMR analyzer is one of the most prominent new techniques in core analysis and reservoir logging. Although a lot of work has been done in conventional reservoir characteristic analysis, the ...

Description: From the perspective of the technical parameters of NMR, the most commonly used ones include relaxation time (mostly T2 relaxation), nuclear magnetic imaging (MRI) and two-dimensional NMR. T2 spectrum ...

Description: Shale has low permeability, low porosity, high clay content and high organic matter content. The lacustrine shale has strong heterogeneity and variable organic matter content. Stratification is a ...

Description: Time-domain Nuclear magnetic resonance (NMR) is a physical phenomenon in which the nucleus in a static magnetic field is subjected to the electromagnetic wave of the corresponding frequency of another ...

Description: According to the principle of LF-NMR, we know that when the H nucleus is used as the research object, the content of H protons in the sample is proportional to the amount of signal. From a macro ...

Description: CMP stands for Chemical Mechanical Polishing. This technology is one of the necessary processes for semiconductor wafer manufacturing, which is very important for high precision and high performance ...

Description: Benchtop NMR technology is based on the basic principles of NMR. The Benchtop NMR takes online samples from the process pipeline. The sample is drained through the permanent magnetic field system, and ...

Description: Beef is rich in nutrients and perishable. It is a common meat in daily diets around the world. Low temperature can inhibit the growth of microorganisms and enzyme activities in meat, but chilled beef ...

Description: EDUMR is a desktop NMR device designed for MRI experimental teaching. Courses to teach NMR principles and experiments through MRI demonstration can be created by including EDUMR in physical ...

Description: Two-dimensional NMR logging expands the distribution of the number of hydrogen nuclei in the pore fluid from one-dimensional single T2 relaxation variable to two-dimensional two variables, making full ...

Description: The oil and water content indicators in food are very important, but the current detection methods are slightly behind. There are many complicated systems in which oil and water coexist in food. The ...