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Plant Physiology 应用综述

ASD systems are used to determine plant physiological status, including disease status, nutritional status related to nitrogen uptake and moisture balance. Plant canopy measurements or individual leaf measurements can be made using ASD spectrometers. A variety of analysis approaches have been used to determine relevant plant health indicators. Vegetative indices, multivariate predictive models and multivariate classification models all have been use with success. Spectral data can be obtained either under solar illumination or with artificial light sources. The flexibility of sample accessories provided by ASD systems allows researchers to collect data relevant to their projects.. Examples of ASD instruments used in plant physiology research are listed below.. Physical and Physiological Basis for the Reflectance of Visible and Near-Infrared Radiation from Vegetation, Knipling, USDA, Remote Sensing of the Environment 1 (1970) 155-159, http://naldc.nal.usda.gov/download/37948/PDF. Goetz award winner on palm oil disease research - http://discover.asdi.com/evaluation-of-neural-network-classifier-with-vnir-spectroscopy-for-early-detection-of-cccvd-in-oil-palm. Use of Vegetative Indices to detect plant diseases - http://www.gil-net.de/Publikationen/19_91.pdf. Early Detection of Oak Wilt Disease in Quercus spp: A Hyperspectral Approach - http://www.utsa.edu/lrsg/teaching/es6973/project/blake1.pdf. Dectection of Powdery Mildew in Two Winter Wheat Plant Densities and Predition of Grain Yield Using Canopy Hyperspectral Reflectance - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376796/. Canopy Spectral Characterization of Wheat Stripe Rust in Latent Period - http://www.hindawi.com/journals/jspec/2015/126090/. Non-Invasive Spectral Phenotyping Methods can Improve and AccelerateCercospora Disease Scoring in Sugar Beet Breeding - http://www.mdpi.com/2077-0472/4/2/147/htm.

产品:
ASD 微量热仪系列
日期:
April 25 2018
语言:
English
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“The brewing process includes several steps: malting, milling, mashing, lautering boiling, fermenting, conditioning, filtering and packaging. The fermentation step is critical to the final beer quality because a multitude of factors (e.g. temperature, pH, sugar composition, yeast type) can affect a large number of quality parameters.” (Grassi et al., 2013)

产品:
ASD 微量热仪系列
日期:
April 25 2018
语言:
English
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“The NIR spectroscopy has been used to measure the content of various constituents in dairy products such as milk, milk powder, whey, and cheese” (Tsenkova et al., 1999)“The composition of produced milk has great value for the dairy farmer. It determines the economic value of the milk and provides valuable information about the metabolism of the corresponding cow. Vis/NIR transmittance spectra of the milk samples gave accurate fat and crude protein predictions (R2 > 0.90) and useful lactose predictions (R2 = 0.88).” (Aernouts et al., 2011)“Contents of main components (e.g. fats, proteins, and carbohydrates) are one of the important factors for the quality of milk powder; NIR spectroscopy is a feasible way for the components determination of the milk powder based on the NIR spectra.” (Wu et al., 2008)“…predictors based on NIR scans are much better than predictors based on age for content of the free amino acids important for cheese ripening.” (Feten et al., 2007)“Governmental or other official laboratories for quality control of dairy products can use NIRS as a screening method for rapid analysis of the composition of unknown samples. Besides with NIRS, it might be possible to determine quality parameters where in the past no direct correlation with chemical or physical methods was apparent.” (Burns & Ciurczak, 2007)

产品:
ASD 微量热仪系列
日期:
April 25 2018
语言:
English
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Spectroscopic techniques such as near infrared (NIR) can be used as a physiological indicator for irrigation scheduling based on vine water demand, rather than relying on weather and/or soil moisture measurements, which do not consider the plant in the assessmentNIR can be used to analyze chlorophyll in grape wine leaves, sugar content, nutrients and carbohydratesThe use of NIR has been reported as a tool to measure physical properties such as firmness, elasticity, and touch resistance in batches of Cabernet Franc grapes (LeMoigne n = 84 et al., 2008)The method based on NIR spectroscopy has been used to discriminate ripening, parcel effects, predict ripening stages, and parcel type (LeMoigne et al., 2008)Investigations of whole grape berry presentation using a NIR spectroscopic device indicated that NIR may have potential for use at the weighbridge or for in -field analysis of total anthocyanins (color), TSS and pH (Cozzolino et al.,2004)Studies have revealed the potential of NIR spectroscopy to predict the concentration of and monitor the extraction and evolution of phenolic compounds during red wine fermentation (Cozzolino et al., 2006)

产品:
ASD 微量热仪系列
日期:
April 25 2018
语言:
English
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"Albedo, the ratio of incoming to reflected solar radiation, plays an important role in climate by regulating the amount of shortwave radiation reflected or absorbed and subsequently reradiated as longwave radiation by a surface.” (Burakowski et al., 2015). Albedo changes are related to light scattering which is caused by changes in particle (crystal size) packing density and foreign materials such as algae or dust on the snow; these things impact the melt rate and can be an indicator of snow/water equivalent, which is important for reservoir management.. .

产品:
ASD 微量热仪系列
日期:
April 18 2018
语言:
English
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