scholarly journals Porosity, permeability, and grain density core analysis results from the FEX Limited Partnership Aklaq #6 well and white light and ultra-violet photography of the FEX Limited Partnership Aklaq #2, Aklaq #6, and Aklaqyaak #1 wells

2011 ◽  
Author(s):  

2021 ◽  
Vol 15 (4) ◽  
pp. 497-503
Author(s):  
Qihang Liu ◽  
Yueli Jiang ◽  
Mingqian Zhao ◽  
Jin Miao ◽  
Zhongjun Gong ◽  
...  

To understand the visual sensitivity of western flower thrips to 350–450 nm light, we examined thrips selective response effect and the effect of white light on thrips visual response effect. The results showed that the visual selection response to Ultra Violet (UV) light at 360–365 nm, the approach sensitivity to 380–385 nm light with 6000 lx was respectively the best (15.59, 7.26%), while under light energy, both of them to 360–365 nm light with 60 mW/cm2 were the best (20.04, 11.13%). Under contrast white light, the most sensitive UV spectra of thrips respectively caused by illumination, light energy was 380–385, 360–365 nm, and white light enhanced thrips visual response effect to UV light, which further increased by the increasing intensity, showing that under illumination, the visual response effect to 380–385 nm light with 6000 lx was the best (51.21,69.78%), while that to 360–365 nm light with 60 mW/cm2 were the best (43.98, 65.68%), originated from the different intensity spread by light energy and illumination. These results indicate that the change of photo-stimulus intensity property can regulated thrips visual sensitivity to enhance the phototactic effect.



1. About forty years ago I sealed in a vacuum tube a yellow diamond cut as a brilliant. This diamond was chosen because it phosphoresced in the dark after exposure to bright sunshine,—it also phosphoresced slightly under the influence of ultra-violet light. In the vacuum tube, as the anti-cathode, it emitted a brilliant yellowish white light giving almost as much light as a candle. It was often exhibited to illustrate the glow of a diamond under the influence of cathode rays in vacuo ; scarcely a week passed without the vacuum tube containing the diamond being exhibited to friends. It was by far the most attractive tube in my collection. After forty years of hard work the diamond has become much dis-coloured. It was of interest to see if the repeated bombardment, as the anti-cathode, in the vacuum tube had conferred radio-activity on the diamond. Accordingly I opened the tube, quickly removed the diamond, and in the dark put it on a sensitive film, a thin sheet of black paper intervening. Over the diamond was placed a pad of cotton-wool and a weight, to prevent the stone from shifting its position. After nine days’ contact the film was developed. An exceedingly slight action could, with difficulty, be detected, showing that the off and on action for forty years had conferred practically no radio-activity on the diamond. 2. A sensitive electroscope was now made, with sulphur insulation. The fall of the leaf was observed with a small telescope having a photographed scale. The normal fall due to natural leakage was 5° in 165 seconds. A piece of a thoria gas mantle caused a fall of 5° in two seconds, and radio-active diamonds caused a fall in from two or three seconds to a fraction of a second. Tested in this instrument I found this special diamond to be entirely devoid of action.



2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Carole A. Llewellyn ◽  
Carolyn Greig ◽  
Alla Silkina ◽  
Bethan Kultschar ◽  
Matthew D. Hitchings ◽  
...  

AbstractThe “UV sunscreen” compounds, the mycosporine-like amino acids (MAAs) are widely reported in cyanobacteria and are known to be induced under ultra-violet (UV) light. However, the impact of far red (FR) light on MAA biosynthesis has not been studied. We report results from two experiments measuring transcriptional regulation of MAA and aromatic amino acid pathways in the filamentous cyanobacterium Chlorogloeopsis fritschii PCC 6912. The first experiment, comparing UV with white light, shows the expected upregulation of the characteristic MAA mys gene cluster. The second experiment, comparing FR with white light, shows that three genes of the four mys gene cluster encoding up to mycosporine-glycine are also upregulated under FR light. This is a new discovery. We observed corresponding increases in MAAs under FR light using HPLC analysis. The tryptophan pathway was upregulated under UV, with no change under FR. The tyrosine and phenylalanine pathways were unaltered under both conditions. However, nitrate ABC transporter genes were upregulated under UV and FR light indicating increased nitrogen requirement under both light conditions. The discovery that MAAs are upregulated under FR light supports MAAs playing a role in photon dissipation and thermoregulation with a possible role in contributing to Earth surface temperature regulation.



2017 ◽  
Vol 728 ◽  
pp. 1124-1138 ◽  
Author(s):  
C. Pratapkumar ◽  
S.C. Prashantha ◽  
H. Nagabhushana ◽  
M.R. Anilkumar ◽  
C.R. Ravikumar ◽  
...  


2017 ◽  
Vol 190 ◽  
pp. 279-288 ◽  
Author(s):  
T. Manohar ◽  
S.C. Prashantha ◽  
H.P. Nagaswarupa ◽  
Ramachandra Naik ◽  
H. Nagabhushana ◽  
...  


RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 100230-100238 ◽  
Author(s):  
Preetam Singh ◽  
Indrani Choudhuri ◽  
Hari Mohan Rai ◽  
Vikash Mishra ◽  
Rajesh Kumar ◽  
...  

Photoluminescence emission spectra from Fe doped LaGaO3. The luminescence due to ultra violet He–Cd laser is shown in the inset.



2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Eunkyeom Kim ◽  
Jihoon Kyhm ◽  
Jung Hyuk Kim ◽  
Gi Yong Lee ◽  
Doo-Hyun Ko ◽  
...  


2018 ◽  
pp. 105-112 ◽  
Author(s):  
Victoriya A. Lapina ◽  
Peter P. Pershukevich ◽  
Alexei V. Trofimov ◽  
Natalya N. Trofimova ◽  
Yuri B. Tsaplev

The article presents a review of fluorescent material use: inorganic phosphors, organic polymeric and molecular phosphors, complex (coordination) compounds, quantum dots and frame metal-organic compounds as component materials of fluorescent converters to transform radiation of blue and ultra-violet diode crystals to white light.



1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.



1994 ◽  
Vol 144 ◽  
pp. 82
Author(s):  
E. Hildner

AbstractOver the last twenty years, orbiting coronagraphs have vastly increased the amount of observational material for the whitelight corona. Spanning almost two solar cycles, and augmented by ground-based K-coronameter, emission-line, and eclipse observations, these data allow us to assess,inter alia: the typical and atypical behavior of the corona; how the corona evolves on time scales from minutes to a decade; and (in some respects) the relation between photospheric, coronal, and interplanetary features. This talk will review recent results on these three topics. A remark or two will attempt to relate the whitelight corona between 1.5 and 6 R⊙to the corona seen at lower altitudes in soft X-rays (e.g., with Yohkoh). The whitelight emission depends only on integrated electron density independent of temperature, whereas the soft X-ray emission depends upon the integral of electron density squared times a temperature function. The properties of coronal mass ejections (CMEs) will be reviewed briefly and their relationships to other solar and interplanetary phenomena will be noted.



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