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| Registros recuperados: 12 | |
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| ebrahimi, mohammad ali. |
| Initial low cost of pesticides and lack of knowledge on the part of agricultural producers has led to an overuse of pesticides, with dangerous consequences. On the other hand, today pesticides have an important role in the increment of agriculture products. Therefore, in recent years, the major aims of agricultural, environmental and even the food industry researchers have been to reduce the usage of chemical materials in agricultural applications. To achieve this, variable rate application in sprayers using different technologies such as machine vision, ultrasonic sensors, spectrometry, laser scanning, as well as pest identification and classification, have been applied in recent studies. This paper reviews these works reported in the 21 century. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ph.D Machine Vision; Ultrasonic Sensors; Spectrometry; Laser; Pest identification and Classification. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4815 |
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| STAINKI,Daniel Roulim; RAISER,Alceu Gaspar; GRAÇA,Dominguita Lühers; BECKER,Cristina; FERNANDEZ,Gilda Maria Saldanha. |
| Vinte e quatro cães adultos, sem raça definida, foram separados em quatro grupos e submetidos a neurotomia bilateral do nervo radial, em nível do terço distal do úmero e, 21 dias após, sofreram anastomose epineural secundária, término-terminal. Nos 10 dias subseqüentes à neuroanastomose, o membro esquerdo de todos os cães foi irradiado com laser arseneto de gálio no intuito de investigar sua influência na regeneração do nervo. O membro contralateral serviu como testemunha. A recuperação funcional foi verificada através da característica da deambulação, testes de sensibilidade e avaliação motora. Foram efetuadas biópsias bilaterais, na região de anastomose, aos 10 dias (grupo A), 30 dias (grupo B), 60 dias (grupo C) e 90 dias (grupo D) após a reconstituição... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Laser; Regeneração; Cicatrização; Nervo radial cães. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000100007 |
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| Fonseca,A.S.; Campos,V.M.A.; Magalhães,L.A.G.; Paoli,F.. |
| Low-intensity lasers are used for prevention and management of oral mucositis induced by anticancer therapy, but the effectiveness of treatment depends on the genetic characteristics of affected cells. This study evaluated the survival and induction of filamentation of Escherichia coli cells deficient in the nucleotide excision repair pathway, and the action of T4endonuclease V on plasmid DNA exposed to low-intensity red and near-infrared laser light. Cultures of wild-type (strain AB1157) E. coli and strain AB1886 (deficient in uvrA protein) were exposed to red (660 nm) and infrared (808 nm) lasers at various fluences, powers and emission modes to study bacterial survival and filamentation. Also, plasmid DNA was exposed to laser light to study DNA lesions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Enzyme; Escherichia coli; Filamentation; Laser. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001000011 |
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| Castro-e-Silva,T.; Castro-e-Silva,O.; Kurachi,C.; Ferreira,J.; Zucoloto,S.; Bagnato,V.S.. |
| The biostimulating effect of laser radiation has been observed in many areas of Medicine. However, there are still several questions to be answered, among them the importance of light coherence in the stimulatory process. In the present study, we used light-emitting diodes (LED) to promote the stimulation of liver regeneration after partial hepatectomy in rats. Fourteen male Wistar rats weighing 200-250 g were submitted to partial hepatectomy (70%) followed by LED light irradiation (630 nm) of the remaining part of the liver at two doses, i.e., 10 (N = 7) and 140 (N = 7) J/cm². A group irradiated with laser, 590 nm (N = 7, 15 J/cm²) was performed for the study of proliferating cell nuclear antigen-labeling index. Data are reported as mean ± SEM.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Liver; Mitochondria; Laser; Light-emitting diode; Liver regeneration; Proliferating cell nuclear antigen. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800006 |
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| Barboza,L.L.; Campos,V.M.A.; Magalhães,L.A.G.; Paoli,F.; Fonseca,A.S.. |
| Semiconductor laser devices are readily available and practical radiation sources providing wavelength tenability and high monochromaticity. Low-intensity red and near-infrared lasers are considered safe for use in clinical applications. However, adverse effects can occur via free radical generation, and the biological effects of these lasers from unusually high fluences or high doses have not yet been evaluated. Here, we evaluated the survival, filamentation induction and morphology of Escherichia coli cells deficient in repair of oxidative DNA lesions when exposed to low-intensity red and infrared lasers at unusually high fluences. Cultures of wild-type (AB1157), endonuclease III-deficient (JW1625-1), and endonuclease IV-deficient (JW2146-1) E. coli, in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Escherichia coli; Filamentation; Laser. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001000013 |
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| Gonçalves,R.V.; Mezêncio,J.M.S.; Benevides,G.P.; Matta,S.L.P.; Neves,C.A.; Sarandy,M.M.; Vilela,E.F.. |
| This study determined the effects of gallium-aluminum-arsenide laser (GaAlAs), gallium-arsenide laser (GaAs) and Dersani® healing ointment on skin wounds in Wistar rats. The parameters analyzed were: type I and III collagen fiber concentrations as well as the rate of wound closure. Five wounds, 12 mm in diameter, were made on the animals’ backs. The depth of the surgical incision was controlled by removing the epithelial tissue until the dorsal muscular fascia was exposed. The animals were anesthetized with ketamine and xylazine via intraperitoneal injection. The rats were randomly divided into five groups of 6 animals each, according to the treatment received. Group 1 (L4): GaAs laser (4 J/cm²); group 2 (L30): GaAlAs laser (30 J/cm²); group 3 (L60):... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cicatrization; Laser; Healing ointment; Collagen I and III; Cutaneous wound. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000400005 |
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| Canuto,K.S.; Sergio,L.P.S.; Guimarães,O.R.; Geller,M.; Paoli,F.; Fonseca,A.S.. |
| Low-level lasers are used at low power densities and doses according to clinical protocols supplied with laser devices or based on professional practice. Although use of these lasers is increasing in many countries, the molecular mechanisms involved in effects of low-level lasers, mainly on DNA, are controversial. In this study, we evaluated the effects of low-level red lasers on survival, filamentation, and morphology of Escherichia colicells that were exposed to ultraviolet C (UVC) radiation. Exponential and stationary wild-type and uvrA-deficient E. coli cells were exposed to a low-level red laser and in sequence to UVC radiation. Bacterial survival was evaluated to determine the laser protection factor (ratio between the number of viable cells after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Escherichia coli; Laser; Ultraviolet radiation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001000012 |
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| Registros recuperados: 12 | |
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