scholarly journals Xanthomonas vasicola pv. vasculorum (bacterial leaf streak of corn).

2021 ◽  
Author(s):  
Lindsay Triplett ◽  
Ravikumar Patel
Keyword(s):  
Bacterial Pathogen ◽  
Effective Control ◽  
Control Methods ◽  
Bacterial Leaf Streak ◽  
Xanthomonas Species ◽  
The Usa ◽  
The Subject ◽  
Active Research ◽  
Impact Data ◽  
Taxonomic Tree

Abstract Xanthomonas vasicola pv. vasculorum (Xvv) is a bacterial pathogen that causes both bacterial leaf streak of maize and sugarcane gumming disease. After decades limited to South Africa, bacterial leaf streak of maize spread rapidly through maize-growing areas of Argentina, Brazil and the USA since 2014. The origin, method and biological underpinnings of this sudden spread are not well understood but are the subject of active research. Effective control methods remain elusive, but sanitation and crop debris management may limit the disease. Yield impact data are not yet available, but lesions may become severe enough to limit plant productivity in some varieties. The pathogen is not currently considered a quarantine threat by the USDA, EPPO or IPPC. Taxonomic Tree Top of page Domain: Bacteria Phylum: Proteobacteria Class: Gammaproteobacteria Order: Xanthomonadales Family: Xanthomonadaceae Genus: Xanthomonas Species: Xanthomonas vasicola pv. vasculorum Notes on Taxonomy and Nomenclature Top of page The taxonomic nomenclature of the pathogen has undergone several changes and is still being resolved at the time of this report. The Xanthomonas clade causing.

Xanthomonas vasicola pv. vasculorum (bacterial leaf streak of corn).

2021 ◽  
Author(s):  
Lindsay Triplett ◽  
Ravikumar Patel
Keyword(s):  
South Africa ◽  
Bacterial Pathogen ◽  
Plant Productivity ◽  
Effective Control ◽  
Control Methods ◽  
Bacterial Leaf Streak ◽  
The Usa ◽  
The Subject ◽  
Active Research ◽  
Impact Data

Abstract Xanthomonas vasicola pv. vasculorum (Xvv) is a bacterial pathogen that causes both bacterial leaf streak of maize and sugarcane gumming disease. After decades limited to South Africa, bacterial leaf streak of maize spread rapidly through maize-growing areas of Argentina, Brazil and the USA since 2014. The origin, method and biological underpinnings of this sudden spread are not well understood but are the subject of active research. Effective control methods remain elusive, but sanitation and crop debris management may limit the disease. Yield impact data are not yet available, but lesions may become severe enough to limit plant productivity in some varieties. The pathogen is not currently considered a quarantine threat by the USDA, EPPO or IPPC.

scholarly journals A Review of Alternative Management Tactics Employed for the Control of Various Cockroach Species (Order: Blattodea) in the USA

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 550
Author(s):  
Ameya D. Gondhalekar ◽  
Arthur G. Appel ◽  
Gretchen M. Thomas ◽  
Alvaro Romero
Keyword(s):  
Applied Research ◽  
Research Effort ◽  
Effective Control ◽  
Control Methods ◽  
Alternative Tactics ◽  
Alternative Control ◽  
The Public ◽  
Concurrent Use ◽  
The Usa ◽  
Alternative Control Methods

Effective control of domestic and peridomestic cockroaches requires integrated approaches that emphasize concurrent use of chemicals with alternative control tactics. An integrated pest management (IPM) approach is particularly justified in environments where satisfactory cockroach control cannot be achieved due to multiple factors including development of insecticide aversion and resistance in some cockroach species, and poor sanitation or structural issues that foster infestations. While a flurry of research effort has been devoted to study alternative tactics for cockroach control, only a few of them have been evaluated in the context of IPM programs. This review focuses on examining studies on alternative tactics that are proven efficacious, economical, and logistically feasible for their inclusion in IPM programs for important domestic and peridomestic cockroaches in the USA. Management programs that educate the public on cockroach biology, behavior, and the importance of sanitation; use of traps to monitor infestation levels; apply targeted low impact insecticides such as baits, have demonstrated a greater success for effective and sustainable control of cockroaches when compared to an insecticide-only approach. Incorporation of other alternative control methods to IPM programs will require more applied research that validates their use in real-world scenarios and demonstrates their cost-effectiveness.

scholarly journals A Bibliometric Review of the Keap1/Nrf2 Pathway and its Related Antioxidant Compounds

Antioxidants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 353 ◽  
Author(s):  
Ana Paunkov ◽  
Dionysios V. Chartoumpekis ◽  
Panos G. Ziros ◽  
Gerasimos P. Sykiotis
Keyword(s):  
Web Of Science ◽  
Research Field ◽  
Antioxidant Compounds ◽  
Nrf2 Pathway ◽  
The Past ◽  
Reverse Pattern ◽  
The Usa ◽  
Bibliometric Review ◽  
The Subject ◽  
Active Research

Nrf2 is a master transcriptional regulator of antioxidant and cytoprotective pathways. Currently in its third decade, research on Nrf2 has expanded to encompass not only basic but also clinical studies. In the present bibliometric review, we employed the VOSviewer tool to describe the existing Nrf2 literature landscape. As of July 2019, 11,931 papers on Nrf2 were listed in the “Web of Science” database, with more than 1000 new papers published each year. As expected, terms related to oxidative stress and antioxidant molecules occur very often in the Nrf2 literature throughout the years. Interestingly, there is also a gradual increase in the occurrence of terms related to diseases or to natural compounds, the most prominent being sulforaphane, curcumin, and resveratrol that modulate the Nrf2 pathway. Going beyond molecular biology/biochemistry and related fields, Nrf2 research has begun to spread into more clinical areas like endocrinology/metabolism, cardiology, and nephrology, likely reflecting an increased interest in clinical applications of Nrf2 pathway activators. China has become the most prolific producer of Nrf2 papers the last five years followed by the USA and Japan, a reverse pattern compared to the past. In conclusion, Nrf2 is the subject of a globally active research field that keeps growing and extends from bench to bedside.

The Israeli–Lebanese war of 2006: consequences for Lebanon

2008 ◽  
Vol 1 (2) ◽  
pp. 187-210
Author(s):  
Ziad Hafez
Keyword(s):  
Arab Countries ◽  
The Political ◽  
National Unity ◽  
Major Consequence ◽  
Political Narrative ◽  
Defence Policy ◽  
Before And After ◽  
The Usa ◽  
The Subject ◽  
The Impact

This article focuses on the political narrative in Lebanon before and after the Israeli war against Lebanon in 2006. It revolves around the subject of national unity as a sine qua non condition for success for the Lebanese resistance led by Hezbollah. A major consequence of the narrative on national unity is the need to build a modern state and establish a cohesive defence policy. The paper also examines the impact of the war on Lebanon's economy and on its relations with the rest of the world (the USA, France, Syria, Arab countries, and Iran).

Lilioceris lilii (lily leaf beetle).

2021 ◽  
Author(s):  
Marc Kenis
Keyword(s):  
New England ◽  
Leaf Beetle ◽  
Northern Europe ◽  
Control Methods ◽  
Cut Flowers ◽  
Lilioceris Lilii ◽  
Lily Leaf Beetle ◽  
The Usa ◽  
Canadian Provinces ◽  
The Uk

Abstract L. lilii is a Eurasian chrysomelid beetle that was first found in Quebec, Canada, in 1943, from where it has spread to several Canadian Provinces, and Vermont and Maine in the USA. It was also reported in Boston, Massachusetts, in 1992, and it is now found in several New England States. It is also alien and invasive in the UK and, probably, in Northern Europe. The beetle most probably spreads with the sale and movement of potted lilies, flowering bulbs or cut flowers. In countries where it is invasive, it is a serious pest of cultivated lilies and fritillaries. Without control methods, leaves and flowers are totally defoliated by larvae. In North America, it also represents a threat to native lilies.

PROVIDING FREE LEGAL ASSISTANCE TO PERSONS SENTENCED TO IMPRISONMENT IN RUSSIA AND THE USA: A COMPARATIVE ANALYSIS

2021 ◽  
pp. 14-19
Author(s):  
Оксана Алексеевна Владимирова
Keyword(s):  
United States ◽  
Comparative Analysis ◽  
The United States ◽  
Synthesis Methods ◽  
Legal Assistance ◽  
American System ◽  
The Usa ◽  
Legal Foundations ◽  
The Subject ◽  
Domestic Practice

Статья посвящена исследованию опыта оказания бесплатной юридической помощи осужденным к лишению свободы в США, а также проведению сравнительного анализа данного и отечественного опыта. Целью работы является изучение основных организационных аспектов и правовых основ оказания юридической помощи такой категории граждан, как осужденные, с целью установления закономерностей и выявления возможности использования положительных аспектов указанного опыта в российском законодательстве. Методы, использующиеся при написании статьи: диалектический, анализ, синтез, сравнительно-правовой. В статье последовательно изучается организация оказания бесплатной юридической помощи осужденным и их родственникам в различных регионах (штатах) США. Особое внимание уделяется субъектам оказания помощи, а также специфике отдельных механизмов и особенностей работы организаций по оказанию безвозмездной помощи осужденным. В качестве особенности американской системы оказания правовой помощи автор особенно выделяет предметный (специализированный) подход к вопросам оказания помощи - отдельные организации занимаются оказанием помощи по выбранному узкому кругу вопросов. Исследование российского опыта правовой помощи осужденным позволяет отметить некоторые преимущества. Вместе с тем, анализ проблем, существующих в системе оказания бесплатной юридической помощи осужденным к лишению свободы, позволил сделать вывод о необходимости совершенствования системы юридической помощи в России. В результате работы выявлен положительный опыт, возможный для применения в российском законодательстве. The article is devoted to the study of the experience of providing free legal assistance to those sentenced to imprisonment in the United States, as well as to the comparative analysis of this experience and that available in domestic practice. The purpose of this work is to study the main organizational aspects and legal foundations of providing legal assistance to such a category of citizens as convicts in order to establish patterns and identify the possibility of using the positive aspects of this experience in Russian legislation. Methods used in this study: dialectical method of cognition, analysis, synthesis, methods of comparative law. The article consistently examines the organization of the provision of free legal assistance to convicts and their relatives in various regions (states) of the United States. Great attention is paid to the subjects of assistance, as well as the specifics of individual mechanisms and features of the work of organizations to provide gratuitous assistance to convicts. As a feature of the American system of providing legal assistance, the author especially highlights the subject (specialized) approach to assistance issues - individual organizations are involved in providing assistance on a selected narrow range of issues. The study of the Russian experience of legal assistance to convicts reveals some advantages. At the same time, the analysis of the problems existing in the system of providing free legal assistance to those sentenced to imprisonment made it possible to conclude that it is necessary to improve the system of legal assistance in Russia. As a result of the work, a positive experience was revealed that could be applied in Russian legislation.

scholarly journals Estimating evapotranspiration using the complementary relationship and the Budyko framework

2017 ◽  
Vol 8 (4) ◽  
pp. 771-790 ◽  
Author(s):  
Homin Kim ◽  
Jagath J. Kaluarachchi
Keyword(s):  
Root Mean Square Error ◽  
Vegetation Cover ◽  
Meteorological Data ◽  
Mean Square ◽  
Limited Data ◽  
Complementary Relationship ◽  
Proposed Model ◽  
The Usa ◽  
Dry Conditions ◽  
The Subject

Abstract Several models have been developed to estimate evapotranspiration. Among those, the complementary relationship has been the subject of many recent studies because it relies on meteorological data only. Recently, the modified Granger and Gray (GG) model showed its applicability across 34 diverse global sites. While the modified GG model showed better performances compared to the recently published studies, it can be improved for dry conditions and the relative evaporation parameter in the original GG model needs to be further investigated. This parameter was empirically derived from limited data from wet environments in Canada – a possible reason for decreasing performance with dry conditions. This study proposed a refined GG model to overcome the limitation using the Budyko framework and vegetation cover to describe relative evaporation. This study used 75 eddy covariance sites in the USA from AmeriFlux, representing 36 dry and 39 wet sites. The proposed model produced better results with decreasing monthly mean root mean square error of about 30% for dry sites and 15% for wet sites compared to the modified GG model. The proposed model in this study maintains the characteristics of the Budyko framework and the complementary relationship and produced improved evapotranspiration estimates under dry conditions.

scholarly journals IRANIAN NUCLEAR DEAL: CHALLENGES FOR REGIONAL AND GLOBAL STRATEGIC MANAGEMENT

2017 ◽  
Vol 2 (1) ◽  
pp. 1-12
Author(s):  
Waseem Ishaque ◽  
Syed Jawad Shah ◽  
Aman Ullah
Keyword(s):  
Strategic Management ◽  
Economic Sanctions ◽  
Nuclear Program ◽  
International Debate ◽  
Hostage Crisis ◽  
The Us ◽  
The Usa ◽  
The Subject ◽  
The 1950S ◽  
Nuclear Assistance

Reza Shah Pahlavi laid the foundations of the Iranian nuclear quest in the 1950s by getting nuclear assistance under reciprocal arrangements in the US-sponsored Atom for Peace program. Iran is a signatory of the NonProliferation Treaty (NPT) since 1970, and by their perspective, all protocols under NPT have fully complied. The 1979 revolution in Iran proved a watershed in relations with the USA due to the hostage crisis and increased hostility, which resulted in economic sanctions and isolation. However, Iran covertly pursued its nuclear program, which remained the subject of international debate until the nuclear deal of 2015 aimed at limiting Irans nuclear capability for the lifting of sanctions and breaking isolation. On 16 January 2016, in response to Irans compliance with the provisions of the nuclear deal, all nuclear-related sanctions were lifted. President Trump since taking over office has repeatedly criticized the agreement and decertified it unilaterally. This article analyses implications on regional and global strategic management.

scholarly journals Assessing the impact of widespread respirator use in curtailing COVID-19 transmission in the USA

2021 ◽  
Vol 8 (9) ◽  
pp. 210699
Author(s):  
Calistus N. Ngonghala ◽  
James R. Knitter ◽  
Lucas Marinacci ◽  
Matthew H. Bonds ◽  
Abba B. Gumel
Keyword(s):  
Dynamic Models ◽  
Effective Control ◽  
Natural Immunity ◽  
Third Wave ◽  
Respiratory Protection ◽  
The Third ◽  
Surgical Masks ◽  
The Usa ◽  
Baseline Levels ◽  
The Impact

Dynamic models are used to assess the impact of three types of face masks (cloth masks, surgical/procedure masks and respirators) in controlling the COVID-19 pandemic in the USA. We showed that the pandemic would have failed to establish in the USA if a nationwide mask mandate, based on using respirators with moderately high compliance, had been implemented during the first two months of the pandemic. The other mask types would fail to prevent the pandemic from becoming established. When mask usage compliance is low to moderate, respirators are far more effective in reducing disease burden. Using data from the third wave, we showed that the epidemic could be eliminated in the USA if at least 40% of the population consistently wore respirators in public. Surgical masks can also lead to elimination, but requires compliance of at least 55%. Daily COVID-19 mortality could be eliminated in the USA by June or July 2021 if 95% of the population opted for either respirators or surgical masks from the beginning of the third wave. We showed that the prospect of effective control or elimination of the pandemic using mask-based strategy is greatly enhanced if combined with other non-pharmaceutical interventions (NPIs) that significantly reduce the baseline community transmission. By slightly modifying the model to include the effect of a vaccine against COVID-19 and waning vaccine-derived and natural immunity, this study shows that the waning of such immunity could trigger multiple new waves of the pandemic in the USA. The number, severity and duration of the projected waves depend on the quality of mask type used and the level of increase in the baseline levels of other NPIs used in the community during the onset of the third wave of the pandemic in the USA. Specifically, no severe fourth or subsequent wave of the pandemic will be recorded in the USA if surgical masks or respirators are used, particularly if the mask use strategy is combined with an increase in the baseline levels of other NPIs. This study further emphasizes the role of human behaviour towards masking on COVID-19 burden, and highlights the urgent need to maintain a healthy stockpile of highly effective respiratory protection, particularly respirators, to be made available to the general public in times of future outbreaks or pandemics of respiratory diseases that inflict severe public health and socio-economic burden on the population.

scholarly journals Global Publications Output in Quantum Computing Research: A Scientometric Assessment during 2007-16

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
S. M. Dhawan ◽  
B.M. Gupta ◽  
Sudhanshu Bhusan
Keyword(s):  
Quantum Computing ◽  
Computer Science ◽  
Citation Index ◽  
National Level ◽  
The Usa ◽  
The Subject ◽  
Scopus Database ◽  
Using Data ◽  
Scientometric Assessment ◽  
Highly Cited

The paper maps quantum computing research on various publication and citation indicators, using data from Scopus database covering 10-year period 2007-16. Quantum computing research cumulated 4703 publications in 10 years, registered a slow 3.39% growth per annum, and averaged 14.30 citations per paper during the period. Top 10 countries dominate the field with 93.15% global publications share. The USA accounted for the highest 29.98% during the period. Australia tops in relative citation index (2.0).  International collaboration has been a major driver of research in the subject; 14.10% to 62.64% of national level output of top 10 countries appeared as international collaborative publications. Computer Science is one of the most popular areas of research in quantum computing research. The study identifies top 30 most productive organizations and authors, top 20 journals reporting quantum computing research, and 124 highly cited papers with 100+ citations per paper.

Sign in / Sign up

Export Citation Format

Share Document