A Common Ragweed (Ambrosia artemisiifolia) Biotype in Southwestern Québec Resistant to Linuron

2005 ◽  
Vol 19 (3) ◽  
pp. 737-743 ◽  
Author(s):  
Sophie Saint-Louis ◽  
Antonio DiTommaso ◽  
Alan K. Watson
Keyword(s):  
Dose Rate ◽  
Herbicide Resistance ◽  
Ambrosia Artemisiifolia ◽  
Resistance Ratio ◽  
Recommended Dose ◽  
Cross Resistance ◽  
Prior History ◽  
Common Ragweed ◽  
History Of ◽  
The Common

The degree of resistance to linuron of a common ragweed biotype was investigated. Suspected linuron-resistant plants collected from a carrot field near Sherrington, Québec, were subjected to increasing rates of linuron under glasshouse conditions. Resistance to linuron of the common ragweed biotype was suspected because 33% of plants survived to reproduction after they were sprayed at a rate of 4.5 kg ai/ha, two times the dose rate recommended for linuron in carrots, and also because 3% of plants survived to reproduction after they were sprayed at a rate of 22.5 kg ai/ ha, 10 times the recommended dose. Susceptible plants collected from a field with no prior history of linuron use were all killed when sprayed at the lowest dose rate recommended, 1.125 kg ai/ha. The herbicide-resistance ratio was 29.0 for linuron, and for cross-resistance to atrazine, the ratio was 1.3, indicating that these plants exhibit greater resistance to linuron than to atrazine.

scholarly journals Characteristics of Apixaban-Treated Patients, Evaluation of the Dose Prescribed, and the Persistence of Treatment

2018 ◽  
Vol 23 (6) ◽  
pp. 494-501 ◽  
Author(s):  
Ainhoa Gomez-Lumbreras ◽  
Jordi Cortes ◽  
Maria Giner-Soriano ◽  
M. Angeles Quijada-Manuitt ◽  
Rosa Morros
Keyword(s):  
Atrial Fibrillation ◽  
Primary Care ◽  
Factor Xa ◽  
Recommended Dose ◽  
Prior History ◽  
Nonvalvular Atrial Fibrillation ◽  
Treatment Naïve ◽  
History Of ◽  
Using Data

Background: Apixaban is a direct oral anticoagulant, which inhibits factor Xa. It has demonstrated clinical efficacy in prevention of stroke and systemic embolism in adult patients with nonvalvular atrial fibrillation and a better safety profile compared to warfarin. Objectives: (1) To describe the characteristics of patients with nonvalvular atrial fibrillation beginning treatment with apixaban, (2) to analyze concomitant prescriptions of medications that could potentially interact with apixaban, (3) to evaluate the level of appropriate usage according to the recommended dosage, and (4) to estimate the level of apixaban persistence among naive and non-naive patients. Methods: Cohort study using data from primary care (System for Research in Primary Care database, users of the Institut Català de la Salut; Catalonia, Spain) from August 2013 to December 2015. Results: Mean age for apixaban-treated patients was 71.8 years (standard deviation = 11.1) and 55.6% were male. In all, 3.2% of patients receiving apixaban were taking drugs described as potentially related to either pharmacokinetic or pharmacodynamic interactions. According to the summary of product characteristics, 81.1% of patients with a recommended dose of 2.5 mg twice daily and 51.8% with a recommended dose of 5 mg twice daily actually took this dose. After 1 year of follow-up, 62.6% of the apixaban users showed good adherence. Conclusion: The prescribed dose of apixaban did not fully follow the recommended dose, particularly in patients who were treatment naive. Patients with a prior history of anticoagulant treatment were more likely to remain persistent to treatment with apixaban.

Pollen Release in the Common Ragweed (Ambrosia artemisiifolia)

1959 ◽  
Vol 120 (4) ◽  
pp. 235-243 ◽  
Author(s):  
D. E. Bianchi ◽  
D. J. Schwemmin ◽  
W. H. Wagner,
Keyword(s):  
Ambrosia Artemisiifolia ◽  
Common Ragweed ◽  
The Common ◽  
Pollen Release

scholarly journals Detection of Target-Site Herbicide Resistance in the Common Ragweed: Nucleotide Polymorphism Genotyping by Targeted Amplicon Sequencing

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 118
Author(s):  
Barbara Kutasy ◽  
Zoltán Farkas ◽  
Balázs Kolics ◽  
Kincső Decsi ◽  
Géza Hegedűs ◽  
...  
Keyword(s):  
Herbicide Resistance ◽  
Illumina Miseq ◽  
Amplicon Sequencing ◽  
Ambrosia Artemisiifolia ◽  
Target Site ◽  
Acetohydroxyacid Synthase ◽  
Wild Type ◽  
Common Ragweed ◽  
Weed Communities ◽  
Herbicide Exposure

Background: The spread of herbicide-resistance Ambrosia artemisiifolia threatens not only the production of agricultural crops, but also the composition of weed communities. The reduction of their spread would positively affect the biodiversity and beneficial weed communities in the arable habitats. Detection of resistant populations would help to reduce herbicide exposure which may contribute to the development of sustainable agroecosystems. Methods: This study focuses on the application of target-site resistance (TSR) diagnostic of A. artemisiifolia caused by different herbicides. We used targeted amplicon sequencing (TAS) on Illumina Miseq platform to detect amino acid changes in herbicide target enzymes of resistant and wild-type plants. Results: 16 mutation points of four enzymes targeted by four herbicide groups, such as Photosystem II (PSII), Acetohydroxyacid synthase (AHAS), 5-enolpyruvylshikimate 3-phosphate synthase (EPSPS) and protoporphyrinogen IX oxidase (PPO) inhibitors have been identified in common ragweed populations, so far. All the 16 mutation points were analyzed and identified. Out of these, two mutations were detected in resistant biotypes. Conclusions: The applied next-generation sequencing-targeted amplicon sequencing (NGS-TAS) method on A. artemisiifolia resistant and wild-type populations enable TSR detection of large sample numbers in a single reaction. The NGS-TAS provides information about the evolved herbicide resistance that supports the integrated weed control through the reduction of herbicide exposure which may preserve ecological properties in agroecosystems.

On the efficiency of introduction of American insects feeding on the common ragweed (Ambrosia artemisiifolia L.) in the south of Russia

2013 ◽  
Vol 93 (8) ◽  
pp. 962-973 ◽  
Author(s):  
O. V. Kovalev ◽  
Yu. V. Tyutyunov ◽  
L. P. Iljina ◽  
S. V. Berdnikov
Keyword(s):  
Ambrosia Artemisiifolia ◽  
The South ◽  
Common Ragweed ◽  
The Common

scholarly journals Common Femoral Artery Aneurysm : A Challenging Diagnostic And Treatment Of A Rare Case

2021 ◽  
Vol 2 (2) ◽  
pp. 31-33
Author(s):  
Ayu Asri Devi Adityawati ◽  
Novi Kurnianingsih ◽  
Budi Satrijo ◽  
Indra Prasetya
Keyword(s):  
Case Report ◽  
Femoral Artery ◽  
Artery Aneurysm ◽  
Common Femoral Artery ◽  
Type Ii Diabetes Mellitus ◽  
Vascular Pathology ◽  
Prior History ◽  
Case Presentation ◽  
History Of ◽  
The Common

Background: Aneurysm of the peripheral artery is a rare vascular pathology, especially aneurysm in the common femoral artery. Here, we presented a case report of a right common femoral artery aneurysm caused by infection. Objective: This case report is aimed to explore further about the diagnosis process of rare cases in peripheral arteries to elaborate proper treatment for patients with this condition. Case Presentation: a 76-year-old man was referred to our hospital with a pulsatile groin mass at his right thigh. He had no prior history of surgery or traumas, but he has been treated in a private hospital due to septic condition, hypertension, and type II diabetes mellitus. A diagnosis of a common femoral artery aneurysm was made based on findings from physical examination and radiology examination. The patient was referred to the Cardiovascular and Thoracic Surgeon Department and scheduled for routine surgery, but on the third day of admission patient became hemodynamically unstable, and on re-examination, the aneurysm was found had been ruptured. Emergency surgery was conducted on that day. During surgery, the patient was hemodynamically stable with PRC transfusion. The result of aneurysm excision and the bypass was remarkable. Conclusion: The common femoral artery aneurysm is uncommon. When a femoral artery aneurysm is suspected, a search for such aneurysms should be conducted. In this kind of patient, straightforward surgical management yields positive outcomes.

Toward a Speech Sciences Community

2012 ◽  
Vol 22 (1) ◽  
pp. 14-20
Author(s):  
Donald Finan ◽  
Stephen M. Tasko
Keyword(s):  
Science Research ◽  
Knowledge Generation ◽  
Speech Language Pathology ◽  
Mandated Curriculum ◽  
Professional Discipline ◽  
Common Area ◽  
Language Pathology ◽  
History Of ◽  
The Common ◽  
Speech Science

The history of speech-language pathology as a profession encompasses a tradition of knowledge generation. In recent years, the quantity of speech science research and the presence of speech scientists within the domain of the American Speech-Hearing-Language Association (ASHA) has diminished, even as ASHA membership and the size of the ASHA Convention have grown dramatically. The professional discipline of speech science has become increasingly fragmented, yet speech science coursework is an integral part of the mandated curriculum. Establishing an active, vibrant community structure will serve to aid researchers, educators, and clinicians as they work in the common area of speech science.

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