Spectral quality of supplemental LED grow light permanently alters stomatal functioning and chilling tolerance in basil ( Ocimum basilicum L.)

2018 ◽  
Vol 227 ◽  
pp. 38-47 ◽  
Author(s):  
Nikolaj Bjerring Jensen ◽  
Morten Rahr Clausen ◽  
Katrine Heinsvig Kjaer
Keyword(s):  
Chilling Tolerance ◽  
Ocimum Basilicum ◽  
Spectral Quality ◽  
Stomatal Functioning

EFFECTS OF ATMOSPHERE COMPOSITION ON POSTHARVEST QUALITY OF FRESH BASIL LEAVES (OCIMUM BASILICUM L.)

2005 ◽  
pp. 731-736 ◽  
Author(s):  
M.L. Amodio ◽  
G. Peri ◽  
G. Colelli ◽  
D. Centonze ◽  
M. Quinto
Keyword(s):  
Ocimum Basilicum ◽  
Postharvest Quality ◽  
Atmosphere Composition

scholarly journals Physiological and transcriptome changes induced by exogenous putrescine in anthurium under chilling stress

2020 ◽  
Vol 61 (1) ◽  
Author(s):  
Xiangli Sun ◽  
Zebin Yuan ◽  
Bo Wang ◽  
Liping Zheng ◽  
Jianzhong Tan ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Chilling Stress ◽  
Chilling Tolerance ◽  
Membrane Lipid ◽  
Control Group ◽  
Qrt Pcr ◽  
Differential Gene ◽  
Anthurium Andraeanum ◽  
Chilling Response

Abstract Background Chilling stress is the major factor limiting plant productivity and quality in most regions of the world. In the present study, we aimed to evaluate the effects of putrescine (Put) and polyamine inhibitor d-arginine (d-arg) on the chilling tolerance of anthurium (Anthurium andraeanum). Results Anthurium seedlings were pretreated with five different concentrations of Put solution or d-arg solution. Subsequently, the seedlings were subjected to chilling stress at 6 °C for 3 days, followed by a recovery at 25 °C for 1 day. Relative permeability of the plasma membrane, as well as physiological and morphologic parameters was assessed during the experiments. Additionally, transcriptome sequencing and patterns of differential gene expression related to chilling response were analyzed by qRT-PCR in 1.0 mM Put-treated and untreated anthurium seedlings. Results indicated that the supplementation of exogenous Put decreased the extent of membrane lipid peroxidation and the accumulation of malondialdehyde (MDA), promoted the antioxidant activities and proline content and maintained the morphologic performances compared with the control group. This finding indicated that the application of exogenous Put could effectively decrease the injury and maintain the quality of anthurium under chilling conditions. In contrast, the treatment of d-arg exhibited the opposite effects, which confirmed the effects of Put. Conclusions This research provided a possible approach to enhance the chilling tolerance of anthurium and reduce the energy consumption used in anthurium production.

scholarly journals Integration of Satellite Data with High Resolution Ratio: Improvement of Spectral Quality with Preserving Spatial Details

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4418 ◽  
Author(s):  
Aleksandra Sekrecka ◽  
Michal Kedzierski
Keyword(s):  
High Ratio ◽  
Data Sets ◽  
Spectral Quality ◽  
Local Statistics ◽  
Panchromatic Image ◽  
Urbanized Area ◽  
Fusion Methods ◽  
Spatial Quality ◽  
Different Levels

Commonly used image fusion techniques generally produce good results for images obtained from the same sensor, with a standard ratio of spatial resolution (1:4). However, an atypical high ratio of resolution reduces the effectiveness of fusion methods resulting in a decrease in the spectral or spatial quality of the sharpened image. An important issue is the development of a method that allows for maintaining simultaneous high spatial and spectral quality. The authors propose to strengthen the pan-sharpening methods through prior modification of the panchromatic image. Local statistics of the differences between the original panchromatic image and the intensity of the multispectral image are used to detect spatial details. The Euler’s number and the distance of each pixel from the nearest pixel classified as a spatial detail determine the weight of the information collected from each integrated image. The research was carried out for several pan-sharpening methods and for data sets with different levels of spectral matching. The proposed solution allows for a greater improvement in the quality of spectral fusion, while being able to identify the same spatial details for most pan-sharpening methods and is mainly dedicated to Intensity-Hue-Saturation based methods for which the following improvements in spectral quality were achieved: about 30% for the urbanized area and about 15% for the non-urbanized area.

scholarly journals On the Spectral Quality of Time-Resolved CMOS SPAD-Based Raman Spectroscopy With High Fluorescence Backgrounds

2020 ◽  
Vol 20 (9) ◽  
pp. 4635-4645
Author(s):  
Jere Kekkonen ◽  
Tuomo Talala ◽  
Jan Nissinen ◽  
Ilkka Nissinen
Keyword(s):  
Raman Spectroscopy ◽  
Spectral Quality ◽  
Time Resolved ◽  
High Fluorescence

Harmonics control of three phase voltage source inverter with random carriers and modified reference

2021 ◽  
pp. 002072092199659
Author(s):  
R Anand ◽  
L Padmasuresh ◽  
P Muthukumar ◽  
P Sreeja ◽  
V Krishnakumar ◽  
...  
Keyword(s):  
Motor Drives ◽  
Voltage Source ◽  
Spectral Quality ◽  
Phase Voltage ◽  
Voltage Source Inverter ◽  
Middle Portion ◽  
Induction Motor Drives ◽  
Three Phase ◽  
Experimental Values

The Harmonics control of any inverters can be decided by the PWM incorporated for the switches. In recent years the carrier and reference modification based research is going on the inverter field. This paper suggests that the alteration of carriers and references of the three phase voltage source inverter enhance the ability to decrease the harmonic content.This enhanced realization deals with the carrier and reference modification arrangement for three phase voltage source inverter through amalgamating the boosted reference and random triangular carrier. The boosted reference is the addition of sine reference with injection of 1/3rd of reference amplitude (3fs) in the middle portion of the reference wave. i.e., [Formula: see text] to [Formula: see text] and [Formula: see text] to [Formula: see text] . The proposed PWM scheme use two carriers, one is Triangle wave and another one is inverted Triangle wave. The process of selecting the winning carrier among the two triangle carriers is purely based on the LFSR technique. The spectral quality of the induction motor drives has improved by the random carriers. The simulation and experimental values are proving the validity of the PWM method. The PWMs are generated by using parallel processing enabled FPGA processor.

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