Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 85 for “"Paraquat"”.
-
Paraquat : in use and misuse
… the problems that have been associated with paraquat, both in relation to its occupational use as a herbicide and its misuse in cases of accidental or deliberate human poisoning. In order to provide a frame of reference for the later discussion, the general properties of paraquat are …
-
The renal handling and nephrotoxicity of paraquat
Thesis (M.S.)--Michigan State University. Dept. of Pharmacology, 1975
-
Systems Genetics and Systems Biology Analysis of Paraquat Effects in BXD Recombinant Inbred Mice
<p>Paraquat (PQ) is a chemical herbicide that is used in many countries including the United States. It is also highly acutely toxic to humans and has been used as a means of suicide. As PQ is applied mainly in agricultural settings, it moves to soil and well water. Chronic low dose exposure via …
-
Effects of paraquat and diquat on the pulmonary and platelet disposition of 5-hydroxytryptamine
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
-
The long-term respiratory health effects of the herbicide, paraquat, among Western Cape workers
Objective: Paraquat is a commonly used herbicide worldwide and is a well-documented cause of pulmonary fibrosis in studies of laboratory animals and in humans following high dose exposure (usually accidental or as parasuicide). The respiratory effects of long-term, low dose paraquat exposure have …
-
Pseudorotaxanes and Supramolecular Polypseudorotaxanes Based on the Dibenzo-24-Crown-8/Paraquat Recognition Motif
… a new recognition motif, the dibenzo-24-crown-8/paraquat recognition motif. Main kinds of pseudorotaxanes and rotaxanes and various protocols used for the study of them were discussed first. By preparation and characterization of a series of pesudorotaxanes based on DB24C8 and paraquat …
-
The mechanism for paraquat toxicity involves oxidative stress and inflammation : a model for Parkinson's disease
… increased risk of developing PD with exposure to paraquat. In this study, we examined the source of reactive oxygen species (ROS) and the underlying signaling pathway for paraquat-induced cytotoxicity to BV-2 microglial cells. Paraquat-induced ROS production was attenuate by inhibitors for NADPH …
-
The Impact of Methylenetetrahydrofolate Reductase (MTHFR) Deficiency in a Paraquat Mouse Model of Parkinson’s Disease
… remains unknown. Environmental toxicants such as paraquat have been linked to the characteristic dopaminergic (DA) neurodegeneration in the substantia nigra (SN); nutrition may also play a role. A common polymorphism (677C>T) in methylenetetrahydrofolate reductase (MTHFR), a folic acid metabolism …
-
Towards decomposition of phosphonates in water using catalytic membranes: paraquat on silica as a proxy
… equally important but easier to study compound, paraquat dichloride, has been selected for initial investigation. Both adsorption and decomposition kinetics have been explored utilizing different analytical techniques such as liquid chromatography mass spectrometry and UV-Vis spectrometry. The …
-
Metabolic bases for the differential response of 'Kwangkyo' and 'Hood' soybean (Glycine max (L.) Merr) to the herbicide paraquat
… and 'Hood' are the bipyridylium herbicide paraquat (1,l'-dimethyl-4,4'-bipyridinium ion). This was confirmed by visible injury observations as well as by measurements of desiccation ratings, chlorophyll content, and chlorophyll fluorescence tracings of fully expanded first trifoliolate …
-
Interactions of paraquat and nitrodiphenylether herbicides with the chloroplast photosynthetic electron transport in the activation of toxic oxygen species
The interactions of paraquat (methylviologen) and diphenylether herbicides with the Mehler reaction as investigated. Sera from two different rabbits (RS1 & RS2) were examined for their patterns of inhibition of the photosynthetic electron transport (PET) system. Serum from RS2 was greatly …
-
Host-Guest Systems Based on Crown Ether, Cryptand, and Pseudocryptand Hosts with Paraquat, Diquat, Secondary Ammonium, and Monopyridinium Salt Guests
… Based on the known bis(m-phenylene)-32-crown-10/paraquat recognition motif, the first solid-state supramolecular poly(taco complex) was prepared. We demonstrate not only that bis(m-phenylene)-32-crown-10-based cryptands are powerful hosts for paraquat derivatives compared with the simple crown …
-
Dessecação em pré-colheita na produtividade e qualidade fisiológica de sementes de feijão-caupi
… coloração marrom). Usaram-se como dessecantes: paraquat, paraquat com reaplicação de paraquat após desfolha total das plantas (PQ+PQ), glufosinato de amônio, glyphosate com aplicação seguinte de paraquat após morte das plantas (G+PQ) e mistura paraquat+diuron. No tratamento controle não houve …
-
Effect of oxidative stress on <i>Escherichia coli sodA-sodB-</i>: protection by the mimic of superoxide dismutase, Mn(III)-salophen
… stress was imposed by exposure of the cells to paraquat or hyperoxia. Cells were grown in LB medium overnight, washed and resuspended in the indicated glucose/salts medium supplemented with casamino acids. The effect of Mn(III)-salophen in the oxidative stress model <i>in vivo</i> was measured …
-
Investigation of Drp1 inhibition as potential therapy in pesticide-based models of Parkinson's disease
… models of Parkinson’s disease, and found that paraquat induced autophagy blockade in vitro, which was abrogated by inhibition of Drp1 function through siRNA knockdown or expression of the Drp1K38A dominant negative. Rotenone and paraquat are two pesticides implicated in the pathophysiology and …
-
Weed control in no-till corn as affected by cultivation, herbicide banding, and cover crop suppression
… cover crop suppression methods evaluated were paraquat or mechanical suppression via mowing. In areas without a cover crop, paraquat was compared to a treatment without paraquat. Five selective herbicide treatments were evaluated within each level of the variable described above. These …
-
Evaluation of herbicides for no-till corn establishment
… glyphosate [N-(phosphonomethyl)glycine] and paraquat (1,1'-dimethyl 4,4'-bipyridinium ion) for the control of vegetation existing at the time of no-till corn establishment. These herbicides were applied alone or in combination with 2,4-D [(2,4-dichlorophenoxy)acetic acid] or dicamba …
-
Design, Preparation and Characterization of Novel Pseudorotaxanes, Semirotaxanes, Rotaxanes, Non-Covalent Supramolecular Polymers and Polycatenanes
… (BMP32C10) derivative/paraquat complexes, for about a quarter century only “taco”-shaped complexes were observed by X-ray crystallography. Here, by the self-assembly of a BMP32C10 bearing two electron-donating groups (carbazoles) with electron-accepting paraquat …
-
Antioxidant responses of pea (Pisum sativum L.) protoplasts
… Sulfite and the superoxide generating herbicide, paraquat, were used as the oxidants. Final sulfite concentrations during photosynthetic incubations ranged from 1.5 mM to 30.0 mM. During the polarographic estimation of photosynthesis, CO₂-dependent O₂ evolution did not decrease. At sulfite …
-
Producción de maiz (Zea mays L.) bajo dos sistemas de labranza y tres métodos de control de malezas, efecto sobre la dinámica de las malezas y el crecimiento y rendimiento del cultivo
… de malezas en las sub-parcelas, estos fueron: paraquat más chapia(pre-emergente y control mecánico a los 28 dias después de la siembra), paraquat (pro-emergente) y paraquat más paraquat (pre-emergente y post-emergente). Los resultados obtenidos muestran que el sistema de labranza cero presentó …
Page 1 of 5