Journal articles: 'Photodestruction'

1

CZÉAGÉA, JÓAZSEF, and LOU REINISCH. "PHOTODESTRUCTION OF BACTERIORHODOPSIN." Photochemistry and Photobiology 53, no. 5 (May 1991): 659–66. http://dx.doi.org/10.1111/j.1751-1097.1991.tb08494.x.

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Yandidova, O. V., V. V. Lemanov, and B. V. Sukharev. "Photodestruction of LiNbO3:Fe crystals." Ferroelectrics Letters Section 7, no. 6 (September 1987): 157–61. http://dx.doi.org/10.1080/07315178708200545.

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Allain, T., E. Sedlmayr, and S. Leach. "Formation and photodestruction of pahs." Astrophysics and Space Science 224, no. 1-2 (February 1995): 417–18. http://dx.doi.org/10.1007/bf00667884.

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Melø, T. B., G. Reisaeter, A. Johnsson, and M. Johnsson. "Photodestruction of Propionibacterium acnes Porphyrins." Zeitschrift für Naturforschung C 40, no. 1-2 (February 1, 1985): 125–28. http://dx.doi.org/10.1515/znc-1985-1-224.

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Abstract The fluorescence spectra of colonies of Propionibacterium acnes were studied under various experimental conditions. The spectra contained peaks at 580 nm and 620 nm. These bands were due to two different components; the 580 nm component was likely to be a metalloporphyrin, and there are indications that the 620 nm component could be a coproporphyrin. The 580 nm fluorescence was destroyed by the combined action of light and oxygen (no destruction under strict anaerobic conditions). A dark period interrupting the bleaching light stopped the destruction of this component for the time of the dark period. The initial production of the 620 nm component was due to the oxygen exposure. Upon light irradiation this component was later destroyed by the combined action of oxygen and light.

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Lelekov, A. S., A. B. Borovkov, T. M. Novikova, I. N. Gudvilovich, A. L. Avsiyan, and O. A. Memetshayeva. "Modeling the Dynamics of Pigment Content in Cells of Dunaliella Salina Teod. Unicellular Alga at the Stage of Carotenogenesis." Mathematical Biology and Bioinformatics 14, no. 1 (May 29, 2019): 279–89. http://dx.doi.org/10.17537/2019.14.279.

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The work is focused on modeling of chlorophyll and carotenoids content dynamics in the in cells of the unicellular algae D. salina, living in salt water, at carotenogenesis induction phase. A mathematical model of pigments content in microalgae cells, which experience excess of light energy and the limit of nutrient medium mineral components, is proposed. The model is based on assumption, that observed rate of variation in pigment concentration is an algebraic sum of the rates of synthesis, photodestruction and partial recovery of photo-oxidized pigments. The rate of secondary carotenoids synthesis does not depend on external conditions and is determined by the quantity of key enzyme complex and its turnover rate. The rate of secondary carotenoids and chlorophyll photodestruction depends on the effective light intensity and is proportional to the amount of absorbed photosynthetically active radiation energy. The verification of the derived equations was conducted in the course of D. salina cultivation at the carotenogenesis stage. The specific rate of chlorophyll a photodestruction was determined, which resulted in 0.12 days–1. The secondary carotenoids concentration increases up to the maximum value, which is determined by the ratio of synthesis and photodestruction specific rates, as well as the maximum culture density. Under conditions of natural light in the Sevastopol region, the maximum concentration of carotenoids was 18.33 mg/l or 0.73 g/m2.

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Romanova, N. A., L. Y. Brovko, L. Moore, E. Pometun, A. P. Savitsky, N. N. Ugarova, and M. W. Griffiths. "Assessment of Photodynamic Destruction of Escherichia coli O157:H7 and Listeria monocytogenes by Using ATP Bioluminescence." Applied and Environmental Microbiology 69, no. 11 (November 2003): 6393–98. http://dx.doi.org/10.1128/aem.69.11.6393-6398.2003.

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ABSTRACT Antimicrobial photodynamic therapy was shown to be effective against a wide range of bacterial cells, as well as for fungi, yeasts, and viruses. It was shown previously that photodestruction of yeast cells treated with photosensitizers resulted in cell destruction and leakage of ATP. Three photosensitizers were used in this study: tetra(N-methyl-4-pyridyl)porphine tetratosylate salt (TMPyP), toluidine blue O (TBO), and methylene blue trihydrate (MB). A microdilution method was used to determine MICs of the photosensitizers against both Escherichia coli O157:H7 and Listeria monocytogenes. To evaluate the effects of photodestruction on E. coli and L. monocytogenes cells, a bioluminescence method for detection of ATP leakage and a colony-forming assay were used. All tested photosensitizers were effective for photodynamic destruction of both bacteria. The effectiveness of photosensitizers (in microgram-per-milliliter equivalents) decreased in the order TBO > MB > TMPyP for both organisms. The MICs were two- to fourfold higher for E. coli O157:H7 than for L. monocytogenes. The primary effects of all of the photosensitizers tested on live bacterial cells were a decrease in intracellular ATP and an increase in extracellular ATP, accompanied by elimination of viable cells from the sample. The time courses of photodestruction and intracellular ATP leakage were different for E. coli and L. monocytogenes. These results show that bioluminescent ATP-metry can be used for investigation of the first stages of bacterial photodestruction.

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Gorbatova, N. Y., T. Y. Yushina, O. O. Sarukhanyan, A. G. Dorofeyev, and A. V. Bryantsev. "Emergency Laser Photodestruction of Benign Vascular Formations of the Skin in Children, Complicated by Bleeding." Russian Sklifosovsky Journal "Emergency Medical Care" 8, no. 1 (April 23, 2019): 35–44. http://dx.doi.org/10.23934/2223-9022-2019-8-1-35-44.

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BACKGROUNDBenign vascular lesions of the skin, hemangiomas and pyogenic granulomas are quite common in pediatric patients, which are complicated with bleeding in 7.5% of cases.MATERIAL AND METHODSIn 2016–2018, 17 children with cavernous hemangiomas and pyogenic granulomas complicated with bleeding were operated on an emergency basis at the Research Institute of Emergency Children’s Surgery and Traumatology. Surgical intervention for all patients was performed using the method of interstitial selective laser photodestruction developed by the RIECST, which took out the utility patent. This method was implemented using two wave laser surgical device IPG “IRE-Polus” (Russia), generating two wavelengths of laser radiation of 0.97 μm and 1.56 μm.RESULTSThe analysis of the long-term results of treatment in 17 pediatric patients who were operated on an emergency basis for hemangioma and pyogenic granuloma complicated by bleeding showed that all 17 patients (100%) had a good clinical and aesthetic result. The method of interstitial selective laser photodestruction provided a radical removal with guaranteed hemostasis of the indicated benign vascular lesions of the skin complicated with bleeding illustrate the effectiveness of this method in clinical practice, as well as the possibility of its use in inpatient and outpatient conditions.CONCLUSIONTo prevent the large blood loss in hemangiomas complicated by bleeding and pyogenic granulomas of the skin in children, emergency surgical treatment has been performed using interstitial selective laser photodestruction. This method ensures the radical photodestruction of tissues of a pathological vascular formation and reliable hemostasis, which guarantees the achievement of a good clinical and aesthetic result of treatment in inpatient and outpatient conditions in all cases.

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Masiera, N., A. Bojarska, I. Gawryszewska, and J. Waluk. "Porphycenes as photosensitizers: Photodestruction of bacteria." Photodiagnosis and Photodynamic Therapy 17 (March 2017): A44. http://dx.doi.org/10.1016/j.pdpdt.2017.01.098.

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Cecchi-Pestellini, Cesare, Santi Aiello, and Bruno Barsella. "R V-dependent Interstellar Photodestruction Rates." Astrophysical Journal Supplement Series 100 (September 1995): 187. http://dx.doi.org/10.1086/192215.

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10

Crovisier, Jacques. "Photodestruction rates for cometary parent molecules." Journal of Geophysical Research 99, E2 (1994): 3777. http://dx.doi.org/10.1029/93je02088.

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11

Tarakanov, O. G., L. V. Nevskji, and V. K. Beljakov. "Photodestruction and photooxidative destruction of polyurethanes." Journal of Polymer Science Part C: Polymer Symposia 23, no. 1 (March 8, 2007): 193–99. http://dx.doi.org/10.1002/polc.5070230124.

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Ivanov, V. B., I. I. Barashkova, V. V. Selikhov, V. N. Vysotsky, Yu Yu Yakovlev, R. A. Sadekova, and N. N. Barashkov. "Photooxidation and photodestruction of modified polyamides." Polymer Degradation and Stability 35, no. 3 (January 1992): 267–76. http://dx.doi.org/10.1016/0141-3910(92)90035-4.

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13

Riemann, Michael, Daniel Bouyer, Akiko Hisada, Axel Müller, Osamu Yatou, Elmar W. Weiler, Makoto Takano, Masaki Furuya, and Peter Nick. "Phytochrome A requires jasmonate for photodestruction." Planta 229, no. 5 (January 31, 2009): 1035–45. http://dx.doi.org/10.1007/s00425-009-0891-9.

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Gorbatova, N. E., D. A. Safin, E. N. Gasanova, A. A. Sirotkin, G. P. Kuzmin, A. S. Tertychny, O. V. Tikhonevich, M. V. Remennicova, and S. A. Zolotov. "Experimental substantiation of «green» laser light application for selective photodestruction of capillary angiodysplasia of the skin." Laser Medicine 24, no. 4 (April 28, 2021): 43–53. http://dx.doi.org/10.37895/2071-8004-2020-24-4-43-53.

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Rationale. The existing techniques for treating skin capillary angiodysplasias, including «laser» photodestruction, are not effective enough and often cause undesirable thermal damage and cicatricial deformities of the skin. Thus, the effective removal of this vascular pathology is still relevant and requires further solution.Purpose. To study the nature of thermal injuries and wound regenerative processes after «green» laser irradiation with wavelength 525 nm so as to find out if it may be used for selective photodestruction of subepithelial pathological vascular structures, including angiodysplasias of skin capillaries.Material and Methods. Scallops of alive white chickens were taken as a biological model of vascular structures for in vivo studies. An experimental solid-state laser generating «green» light with wavelength 525 nm was used. This laser light has similar peaks of the absorption coefficient of hemoglobin and oxyhemoglobin which are found in skin capillaries. Features of damage and dynamics of regenerative process in the irradiated area were studied at the model of vascular structures using findings of morphological macroscopic and histological examinations.Results. Findings of the present experimental trial have inspired that selective photodestruction of subepithelial vascular structures of scallops is possible with minimal damage to the epithelium, including growth zones. In irradiated areas, one could see whitening and smoothing of the surface due to closure of vessel lumens in the subepithelial zone and formation of collagenosis layer there, as well as epithelialization of wound surface in physiological terms without any formation of cicatricial deformation of the skin.Conclusion. The selective effect of 525 nm «green» laser light at subepithelial vascular structures with minimal skin damage has been confirmed. It opens a way to apply this light for selective photodestruction of capillary angiodysplasias of the skin with good clinical and esthetic outcomes.

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Gredel, R., S. Lepp, A. Dalgarno, and E. Herbst. "Cosmic Ray Induced Photodestruction of Interstellar Molecules." International Astronomical Union Colloquium 120 (1989): 32–37. http://dx.doi.org/10.1017/s0252921100023459.

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AbstractUltraviolet photons are created in the interior of dense interstellar clouds by the impact excitation of molecular hydrogen by secondary electrons generated by cosmic ray ionization. The resulting photodissociation and photoionization rates of a wide range of interstellar molecules are calculated. The effects on the equilibrium chemical composition of dense clouds are briefly discussed.

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SCHMIDT-ERFURTH, URSULA, THOMAS J. FLOTTE, EVANGELOS S. GRAGOUDAS, KEVIN SCHOMACKER, REGINALD BIRNGRUBER, and TAYYABA HASAN. "Benzoporphyrin-Lipoprotein-Mediated Photodestruction of Intraocular Tumors." Experimental Eye Research 62, no. 1 (January 1996): 1–10. http://dx.doi.org/10.1006/exer.1996.0001.

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Lincoln, R., A. M. Durantini, L. E. Greene, S. R. Martínez, R. Knox, M. C. Becerra, and G. Cosa. "meso-Acetoxymethyl BODIPY dyes for photodynamic therapy: improved photostability of singlet oxygen photosensitizers." Photochemical & Photobiological Sciences 16, no. 2 (2017): 178–84. http://dx.doi.org/10.1039/c6pp00166a.

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Br or I substituted BODIPY photosensitizers for photodynamic therapy bearmeso-acetoxymethyl substitutents for improved photostability to singlet-oxygen damage rendering enhanced¹O₂generation before photodestruction.

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Dorofeev, A. G., Natalia E. Gorbatova, T. E. Yushina, I. V. Batunina, A. V. Bryantsev, S. A. Zolotov, and O. O. Sarukhanyan. "THE EFFECTIVENESS OF INTERSTITIAL SELECTIVE LASER PHOTODESTRUCTION OF FOCAL FORMS OF HEMAGIOMAS IN CHILDREN." Russian Journal of Pediatric Surgery 23, no. 6 (January 15, 2020): 314–20. http://dx.doi.org/10.18821/1560-9510-2019-23-6-314-320.

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Introduction. Hemangiomas in infants at their first weeks of life can quickly progress and lead not only to the disfigurement of appearance, but also to serious complications, like bleeding, ulceration, suppuration and other negative consequences. Purpose. To have good clinical and aesthetic results in children with cavernous hemangiomas using the technique of interstitial selective laser photodestruction. Material and methods. In 2016 - 2018, focal forms of hemangiomas were registered in 140 children aged 1 month-16 years who were consulted in the Clinical and Research Institute of Emergency Pediatric Surgery and Trauma. The technique of interstitial selective laser photodestruction was selected for surgical treatment in all patients (RF Patent №2016110843 dated 04.09.2017). Two-wave laser surgical apparatus LSP IRE-Polyus (Russia) with wavelengths 0.97 μm and 1.56 μm was used. All 140 patients had ultrasound examination of their vascular formations and other preoperative procedures . The surgical intervention was performed in the hospital under general anesthesia. 131 of patients had planned operations and 9 of them had urgent operations because of hemangioma bleeding. Results. Long-term outcomes have shown that in 100% of cases we achieved good clinical result with no residual hemangioma elements; in the majority of cases (69%) the optimal aesthetic result was achieved; and in 31% of cases we had satisfactory outcomes by the criteria of aesthetic effectiveness. Conclusions. Interstitial selective laser photodestruction is the best option to radically treat focal forms of hemangiomas in children.

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Cottin, Herve, Marla H. Moore, and Yves Benilan. "Photodestruction of Relevant Interstellar Molecules in Ice Mixtures." Astrophysical Journal 590, no. 2 (June 20, 2003): 874–81. http://dx.doi.org/10.1086/375149.

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Lao, K., and A. N. Glazer. "Ultraviolet-B photodestruction of a light-harvesting complex." Proceedings of the National Academy of Sciences 93, no. 11 (May 28, 1996): 5258–63. http://dx.doi.org/10.1073/pnas.93.11.5258.

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Zhou, X. L., and J. P. Cowin. "Photodestruction of CCl4on MgO Films with/without Water." Journal of Physical Chemistry 100, no. 3 (January 1996): 1055–65. http://dx.doi.org/10.1021/jp952375q.

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Xu, Ruifen, Xiaoling Liu, Peng Zhang, Hao Ma, Gang Liu, and Zhengyan Xia. "The photodestruction of virus in Nano-TiO2 suspension." Journal of Wuhan University of Technology-Mater. Sci. Ed. 22, no. 3 (September 2007): 422–25. http://dx.doi.org/10.1007/s11595-006-3422-6.

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Weiss, R. E., W. M. Roberts, W. Stühmer, and W. Almers. "Mobility of voltage-dependent ion channels and lectin receptors in the sarcolemma of frog skeletal muscle." Journal of General Physiology 87, no. 6 (June 1, 1986): 955–83. http://dx.doi.org/10.1085/jgp.87.6.955.

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The mobility of lectin receptors and of two types of ion channels was studied in skeletal muscles of the frog Rana temporaria. Lectin receptors were labeled with fluorescent derivatives of succinyl-concanavalin A (Con A) or wheat germ agglutinin (WGA), and their mobility was measured by fluorescence recovery after photobleaching. Of the receptors for WGA, approximately 53% were free to diffuse in the plane of the membrane, with an average diffusion coefficient as found in other preparations (D = 6.4 X 10(-11) cm2/s). Con A receptors were not measurably mobile. The mobility of voltage-dependent Na and K (delayed rectifier) channels was investigated with the loose-patch clamp method, coupled with through-the-pipette photodestruction of channels by ultraviolet (UV) light. Na channels were not measurably mobile (D less than or equal to 10(-12) cm2/s). With K channels, photodestruction was followed by a small but consistent recovery of K current, which suggested that some K channels diffused in the plane of the membrane. Our results with K currents are best fit if 25% of the K channels diffuse with D = 5 X 10(-11) cm2/s, with the remainder being immobile. For both Na and K channels, photodestruction by UV was most effective at a wavelength of approximately 289 nm. At this wavelength, the energy density required for an e-fold reduction in the number of functional channels was 0.40 J/cm2 for Na channels and 0.94 J/cm2 for K channels. Irradiation at this wavelength and dose did not measurably diminish the mobility of WGA receptors; hence, the immobility of Na and most K channels is not due to UV irradiation. It is concluded that mobile and immobile membrane proteins coexist in the sarcolemma of frog skeletal muscle, and that voltage-dependent Na and K channels are singled out for immobilization.

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Srećković, Vladimir A., Ljubinko M. Ignjatović, and Milan S. Dimitrijević. "Photodestruction of Diatomic Molecular Ions: Laboratory and Astrophysical Application." Molecules 26, no. 1 (December 31, 2020): 151. http://dx.doi.org/10.3390/molecules26010151.

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In this work, the processes of photodissociation of some diatomic molecular ions are investigated. The partial photodissociation cross-sections for the individual rovibrational states of the diatomic molecular ions, which involves alkali metals, as well as corresponding data on molecular species and molecular state characterizations, are calculated. Also, the average cross-section and the corresponding spectral absorption rate coefficients for those small molecules are presented in tabulated form as a function of wavelengths and temperatures. The presented results can be of interest for laboratory plasmas as well as for the research of chemistry of different stellar objects with various astrophysical plasmas.

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Saunders, W. A., P. Fayet, and L. Wöste. "Photodestruction of positively and negatively charged aluminum-cluster ions." Physical Review A 39, no. 9 (May 1, 1989): 4400–4405. http://dx.doi.org/10.1103/physreva.39.4400.

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BARRY, PAUL, ANDREW J. YOUNG, and GEORGE BRITTON. "Photodestruction of Pigments in Higher Plants by Herbicide Action." Journal of Experimental Botany 41, no. 2 (1990): 123–29. http://dx.doi.org/10.1093/jxb/41.2.123.

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Harris, David M., Steven L. Jacques, and Richard Darveau. "The Black Bug Myth: Selective photodestruction of pigmented pathogens." Lasers in Surgery and Medicine 48, no. 7 (August 1, 2016): 706–14. http://dx.doi.org/10.1002/lsm.22545.

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Evstropiev, S. K., N. V. Nikonorov, and A. S. Saratovskii. "Photodestruction of Polyvinylpyrrolidone in Aqueous Solutions of Metal Nitrates." Optics and Spectroscopy 128, no. 11 (November 2020): 1873–79. http://dx.doi.org/10.1134/s0030400x20110119.

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Anastasio, Cort, and Keith G. McGregor. "Photodestruction of Dissolved Organic Nitrogen Species in Fog Waters." Aerosol Science and Technology 32, no. 2 (February 2000): 106–19. http://dx.doi.org/10.1080/027868200303812.

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Novak, Kenneth D., Steven M. Williams, Irena Kokot, and Robert L. Schultze. "Nd:YAG Photodestruction of a Presumed Corneal Toxocara canis Larva." Cornea 29, no. 6 (June 2010): 703–5. http://dx.doi.org/10.1097/ico.0b013e3181c296d6.

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ROBERTS, W. GREGORY, KEVIN M. SMITH, JERRY L. MCCULIOUGH, and MICHAEL W. BERNS. "SKIN PHOTOSENSITIVITY AND PHOTODESTRUCTION OF SEVERAL POTENTIAL PHOTODYNAMIC SENSITIZERS." Photochemistry and Photobiology 49, no. 4 (April 1989): 431–38. http://dx.doi.org/10.1111/j.1751-1097.1989.tb09191.x.

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Astanov, S. Kh, M. Turdiev, M. Z. Sharipov, É. N. Kurtaliev, and N. N. Nizomov. "Effect of Acidity of a Medium on Riboflavin Photodestruction." Russian Physics Journal 58, no. 11 (March 2016): 1592–97. http://dx.doi.org/10.1007/s11182-016-0688-9.

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Vorobei, A. V., É. E. Petrov, N. A. Shukanova, E. I. Sagun, and B. M. Dzhagarov. "Autosensitized photodestruction of merocyanine 540 in solution and membranes." Journal of Applied Spectroscopy 59, no. 5-6 (November 1993): 876–79. http://dx.doi.org/10.1007/bf00664935.

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Yushina, Tatiana Е., N. E. Gorbatova, A. G. Dorofeev, I. V. Batunina, S. A. Zolotov, and O. O. Sarukhanyan. "LASER PHOTO-DESTRUCTION OF PYOGENIC GRANULOMAS OF THE SKIN IN CHILDREN." Russian Journal of Pediatric Surgery 23, no. 4 (September 17, 2019): 196–200. http://dx.doi.org/10.18821/1560-9510-2019-23-4-196-200.

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Introduction. Pyogenic granuloma (PG), a benign vascular tumor of the skin of inflammatory etiology, is often met in children. Complications of this pathology (ulceration and bleeding) are seen in 7.5% of cases. Material and methods. 67 patients were operated on for pyogenic granulomas. 22 patients had bleedings. Before surgery, all patients had sonography with color Doppler mapping of this vascular formation. 57 children had a planned surgery and were operated under topical anesthesia in the outpatient unit. 10 patients on admission had bleedings from pyogenic granulomas. After conservative arresting the bleeding, 7 patients out of these 10 had urgent surgery; in other three children with severe bleeding hemostasis was not achieved conservatively, and they were immediately operated on. All urgent surgical interventions were made under local anesthesia in an outpatient operating room. Patients with emergency cases, were younger than 3 y.o. They were operated in the operation room in the hospital under general anesthesia. Pyogenic granulomas in all 67 patients were removed by the technique of interstitial selective laser photodestruction, the prototype of which was “Method for treating cavernous forms of hemangiomas in children” developed and patented in CRIEPST. For this surgical intervention, two-wave laser surgical device “IRE-Polyus” (Russia), with wavelength of 0.97 mkm and 1.56 mkm was used. Results. Postoperative period in all patients was uneventful, with complete healing of wound defect in 10-12 days; no recurrences of vascular formation or its residual elements were observed in any case. All 67 patients had good clinical and aesthetic results after the applied surgical technique. Conclusion. To prevent complications in children with pyogenic granulomas, surgical treatment with the technique of interstitial selective laser photodestruction adapted for this pathology is recommended. The described interstitial selective laser photodestruction radically removes pathological tissues of pyogenic granulomas and ensures reliable hemostasis, what leads to good clinical and aesthetic results in treating the discussed group of patients both in inpatient and outpatient settings.

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Bahnemann, D. W., S. N. Kholuiskaya, R. Dillert, A. I. Kulak, and A. I. Kokorin. "Photodestruction of dichloroacetic acid catalyzed by nano-sized TiO2 particles." Applied Catalysis B: Environmental 36, no. 2 (February 2002): 161–69. http://dx.doi.org/10.1016/s0926-3373(01)00301-0.

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Baltova, Stela, and Violeta Vassileva. "Photochemical behaviour of natural silk—II. Mechanism of fibroin photodestruction." Polymer Degradation and Stability 60, no. 1 (April 1998): 61–65. http://dx.doi.org/10.1016/s0141-3910(98)80027-x.

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Miyake, S., P. C. Stancil, H. R. Sadeghpour, A. Dalgarno, B. M. McLaughlin, and R. C. Forrey. "RESONANT H – PHOTODETACHMENT: ENHANCED PHOTODESTRUCTION AND CONSEQUENCES FOR RADIATIVE FEEDBACK." Astrophysical Journal 709, no. 2 (January 14, 2010): L168—L171. http://dx.doi.org/10.1088/2041-8205/709/2/l168.

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Krichevsky, G. E., G. T. Khachaturova, and O. M. Anissimova. "Specific Features of Photodestruction and Photostabilization of Dyed Textile Materials." International Journal of Polymeric Materials 13, no. 1-4 (September 1990): 63–72. http://dx.doi.org/10.1080/00914039008039462.

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Makarov, D. A., N. A. Kuznetsova, and O. L. Kaliya. "Regularities of the photodestruction of acridine dyes in aqueous media." Russian Journal of Physical Chemistry 80, no. 2 (February 2006): 268–74. http://dx.doi.org/10.1134/s0036024406020270.

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Sternberg, A., A. Dalgarno, and S. Lepp. "Cosmic-ray-induced photodestruction of interstellar molecules in dense clouds." Astrophysical Journal 320 (September 1987): 676. http://dx.doi.org/10.1086/165585.

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Fotou, George P., Srinivas Vemury, and Sotiris E. Pratsinis. "Synthesis and evaluation of titania powders for photodestruction of phenol." Chemical Engineering Science 49, no. 24 (December 1994): 4939–48. http://dx.doi.org/10.1016/0009-2509(94)00394-7.

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Dinu, Laura, and Wim J. van der Zande. "Photodestruction of NO2− using time resolved multicoincidence detection photofragment spectroscopy." Chemical Physics 300, no. 1-3 (May 2004): 133–41. http://dx.doi.org/10.1016/j.chemphys.2004.01.005.

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Melø, Thor B. "Uptake of Protoporphyrin and Violet Light Photodestruction of Propionibacterium acnes." Zeitschrift für Naturforschung C 42, no. 1-2 (February 1, 1987): 123–28. http://dx.doi.org/10.1515/znc-1987-1-220.

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Abstract The uptake of protoporphyrin IX by Propionibacterium acnes in suspension has been studied by fluorescence spectroscopy. Protoporphyrin, after it was injected into a cell suspension, was firstly bound to receptors on the cell surface and in this state protoporphyrin was non-fluorescent. Subsequently, probably as a result of lateral diffusion in the cell wall, these protoporphyrinreceptor complexes formed dimers. The final step in the overall uptake process of protoporphyrin by the cells from the surroundings consisted in a jum p of such dimers from waterlike to lipidlike com partm ents in the cell mem brane where protoporphyrin became fluorescent. The lipidlike com partm ents in the cells had a limited binding capacity of protoporphyrin. The fraction of surviving cells versus light dose has also been studied for varying amounts of protoporphyrin added to the cell suspensions. The survival curves were exponentially decaying with the irradiation time and there was a direct proportionality between the inverse slope of the survival curves and the intensity of protoporphyrin fluorescence from the lipidlike compartm ents. The relevance of these results to the therapy of Acne vulgaris is also discussed.

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Franck, Fabrice, and Georg H. Schmid. "On the Correlation between Oxygen Uptake in Plastids of Greening Etiolated Oat Leaves and Pigment Photooxidation." Zeitschrift für Naturforschung C 40, no. 9-10 (August 1, 1985): 699–704. http://dx.doi.org/10.1515/znc-1985-9-1020.

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Abstract Changes in oxygen evolution or uptake in illuminated plastids were studied during the early stages of greening in etiolated leaves. An oxygen uptake was observed in etioplasts, which persisted even after the appearance of oxygen evolution. This oxygen uptake was most pronounced in etioplasts or in plastids prepared after redarkening the plants. Incubation of pre-illuminated etioplasts in the presence of NADPH resulted in an inhibition of the uptake in a subsequent illumination. Addition of NADPH had three further consequences: a shift of the chlorophyllide absorbance band to 682 nm, an inhibition of pigment photodestruction and the appearance of a light-induced fluorescence transient at room temperature. Inhibition of pigment photodestruction by NADPH was maximal when the experimental conditions favoured the formation of the P682 chlorophyllide-protein. It is inferred that the oxygen uptake seen under these conditions is due to pigment photooxidation. Inhibition of both phenomena by NADPH is ascribed to the specific interaction of the nucleotide with the pigment-protein complexes and to the ability of these complexes to undergo the light-induced chlorophyllide microcycle, described by Franck and Inoue (Photobiochem. Photobiophys. 8, 85-96, 1984). In the leaf, NADPH is thought to play the same role.

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Lambert, R., A. Sibille, C. Vialet, F. Chapuis, F. Berger, and F. Descos. "Laser photodestruction of sessile adenoma in the rectum: Long term results." Gastrointestinal Endoscopy 41, no. 4 (April 1995): 380. http://dx.doi.org/10.1016/s0016-5107(05)80374-8.

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Lutz, Cornelius. "Avoidance of Photoinhibition and Examples of Photodestruction in High Alpine Eriophorum." Journal of Plant Physiology 148, no. 1-2 (January 1996): 120–28. http://dx.doi.org/10.1016/s0176-1617(96)80303-8.

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Belykh, D. V., O. G. Shevchenko, and I. S. Tarabukina. "Erythrocytes Membrane Photodestruction Sensitized Chlorophyll a Derivatives: Some Structure-Activity Regularities." Macroheterocycles 7, no. 1 (2014): 79–87. http://dx.doi.org/10.6060/mhc140377b.

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Khandarkhaeva, M. S., V. A. Munkoeva, A. A. Batoeva, and M. R. Sizykh. "Effect of Hydrocarbonates and Chlorides on the Photodestruction of Bisphenol A." Russian Journal of Physical Chemistry A 92, no. 12 (December 2018): 2570–74. http://dx.doi.org/10.1134/s0036024418120208.

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Aiello, S., C. Cecchi Pestellini, and S. Tiné. "Radiation Transfer and Photochemical Effects in Inhomogeneous Dense Clouds." Symposium - International Astronomical Union 150 (1992): 231–36. http://dx.doi.org/10.1017/s0074180900090082.

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UV radiation leads to photodissociation and photoionization of molecular species in diffuse clouds and in the extended envelopes of dark regions. In the inner part of heavily-obscured objects, the residual external field may be negligible; alternative mechanisms, such as cosmic-ray-induced H2 emission, appear to be efficient in photodestruction processes. We evaluate the relative importance of these radiation sources, and give some estimates of their effects on the mean lifetime of interstellar molecules, taking into account the cloud structure that significantly affects the penetration depth of UV radiation.

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Mostowska, Agnieszka. "Response Of Chloroplast Structure To Photodynamic Herbicides And High Oxygen." Zeitschrift für Naturforschung C 54, no. 9-10 (October 1, 1999): 621–28. http://dx.doi.org/10.1515/znc-1999-9-1002.

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Response of chloroplast on the structural level to photodynamic herbicides and high oxygen concentration was compared with symptoms of chloroplast senescence. Based on the present results and those known from the literature a general pattern of response was proposed: the action of most of environmental factors induces the oxidative stress and often gives similar symptoms of structural damage and dysfunctions independent of the primary stressing factor. These alterations consist mostly in swelling of thylakoids, disruption of chloroplast membranes, intensive plastoglobuli accumulation, photodestruction of pigments and inhibition of photosynthesis

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Journal articles on the topic 'Photodestruction'

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