At the beginning of the 20th century, AE Douglas founded the tree ring school, which has been divided into: tree ring chronology; tree wheel biology; tree wheel climatology; tree wheel fire science; tree wheel geomorphology; tree wheel Chemistry, tree archaeology. Among them, tree-ring chronology, tree-ring climatology and tree-ring archaeology have made amazing research results. The research of annual ring science can not be separated from professional "tools", ranging from sampling devices to precision analysis, all of which require professional equipment technology. This article introduces advanced technology instruments in the field of international annual ring research as follows, including the year of trees. Round measurement, elemental analysis, etc.
1, Multiscanner tree ring element analysis system Multiscanner tree ring element analysis system is a high-end measurement and analysis equipment, the world's first simultaneous use of XRF and X-ray imaging technology, can be used for trees, wood or wood products, etc. Density and elemental analysis. The measurable elements are Al, Si, S, Cl, K, Ca, Cr, Mn, Fe, Cu, Zn, As, Hg, Pb, etc., many of which can be measured below trace levels, sensitivity and resolution requirements Higher research is especially suitable.
â—Automatic multi-sample analysis, repeated analysis and reproducibility is very good
2, MT annual measurement analysis system MT annual measurement analysis system under the microscope to measure the tree rings, through the precise micro-operating console and electronic unit and software, real-time analysis shows the tree ring status. The instrument is convenient and practical, can quickly grasp the operation, precise wheel control and high-resolution microscope positioning technology, making the annual ring analysis accurate and simple.
â— Data collector: The maximum measured sample size is 1000; each sample measurement can record the sample point 500; the online mode data is saved to the computer in real time without being limited by the number of samples;
â— Software can download data, Online measurement, manually modify data, annual ring year, annual ring width, tree core ID information, add notes, compare two sets of annual ring data, preliminarily determine annual ring feature matching degree, initial evaluation (Assessment), Indicate the abnormal growth year and possible influencing factors such as drought, rainy season, and low temperature.
3, Win Dendro annual wheel analysis system WinDENDRO annual wheel analysis system uses a high-quality graphic scanning system to replace the traditional camera system, using a special lighting system to remove the effects of shadows and unevenness, customized sample core fixing system The sample core positioning tool effectively guarantees the quality of the scan. The multi-version software is suitable for different analysis needs. The software can also read images in the TIFF standard format.
4, IML series tree needle tester IML series tree needle tester is used to detect the internal structure of trees (wood), through the drill hole into the tree impedance measurement record, can easily and accurately detect the internal structure of the tree such as decay or void, Material condition, growth status (annual round analysis), etc.
â— Data output: print wax paper tape and download to PC
â— Optional Tools PRO software package for data output, averaging, hole detection analysis, tree ring analysis, etc.
5, Haglof tree growth cone tree growth survey necessary tools, does not destroy the normal growth of trees, made of high quality Swedish steel, high strength, durable, various models for different hardness wood.
â— Sampling core diameter: 3.5mm, 4.3mm, 5.15mm, 10mm, 12mm;
â— Length range: 100mm-1000mm
Beijing Yiketai Ecological Technology Co., Ltd. has been committed to China's scientific research for nearly 20 years. It has introduced advanced ecological measurement and monitoring instruments and technologies from abroad, and has comprehensive solutions and perfect after-sales service in the field of annual ring research. We look forward to your attention.
Magnetic Bead Nucleic Acid Extraction Reagent
The magnetic bead method nucleic acid extraction kit is a high-tech product that combines biological science and nanomaterial science. It is a major breakthrough in my country's nucleic acid extraction and purification technology. . Magnetic bead method for nucleic acid extraction has incomparable advantages over traditional DNA extraction methods, which are mainly reflected in: 1. It can realize automatic and large-scale operation. At present, there are 96-well nucleic acid automatic extraction instruments, and the extraction time of one sample can be realized. The processing of 96 samples complies with the high-throughput operation requirements of biology, enabling rapid and timely response to infectious disease outbreaks, which makes traditional methods unmatched; â‘¡ The operation is simple and time-consuming, and the entire extraction process has only four steps , most of them can be completed within 36-40 minutes; â‘¢ Safe and non-toxic, no toxic reagents such as benzene and chloroform in traditional methods are used, and the damage to experimental operators is minimized, which fully conforms to modern environmental protection concepts; â‘£ Magnetic beads and nucleic acids The specific binding of the extracted nucleic acid results in high purity and high concentration of the extracted nucleic acid. According to the same principle as the silica membrane spin column, the superparamagnetic silica nano-magnetic beads are prepared after the surface of the superparamagnetic nanoparticles is modified and modified by nanotechnology. The magnetic beads can specifically recognize and efficiently bind to nucleic acid molecules on a microscopic interface. Using the superparamagnetic properties of silica-coated nanomagnetic microspheres, under the action of Chaotropic salts (guanidine hydrochloride, guanidine isothiocyanate, etc.) and an external magnetic field, samples from blood, animal tissues, food, pathogenic microorganisms, etc. The isolated DNA and RNA can be used in clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, molecular biology research and other fields. Magnetic bead nucleic acid extraction can generally be divided into four steps: lysis-binding-washing-elution. Genetic testing will surely become a new symbol of the development of the biological industry. The emergence of high-throughput, automated nucleic acid extraction methods will reduce the labor cost of genetic testing, make large-scale testing a reality, and make it possible for genetic testing to reach ordinary people.
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