COVID19: Preventive and Protective Control Management Strategies

2021 ◽  
pp. 32-62
Author(s):  
Kalyani Pathak ◽  
Manash Pratim Pathak ◽  
Urvashee Gogoi ◽  
Riya Saikia ◽  
Aparoop Das
2020 ◽  
Vol 8 (1) ◽  
pp. 5-20
Author(s):  
Adriana Bruscato Bortoluzzo ◽  
Antonio Reis Silva Neto ◽  
Maurício Mesquita Bortoluzzo

The Brazilian Real Estate Investment Trusts (REITs) had a market capitalization of 20.2 billion dollars on July 31, 2018, and is a constantly growing market, according to the Brazilian Association of Financial and Capital Market Entities (ANBIMA). This paper seeks to analyse property-type diversification and property control management strategies in the performance of Brazilian REITs, measured by Jensen’s Alpha indicator, using a dynamic regression panel data from 110 REITs in the period between 2002 and early 2016. The results suggest that a property control strategy positively affects the performance of Brazilian REITs, indicating that trusts could improve performance by avoiding conflicts of interest with third parties, and perhaps agency problems inside the REIT’s corporate structure by having full control over its properties. When excluding mortgage REITs from the sample, the property-type diversification also presents a positive and statistical relevant impact on performance, surpassing the impacts of a focused strategy. Finally, it is noted that the performance of Brazilian REITs have high persistence, which indicates that managers seek to achieve a target performance and maintain this performance over time.


Water ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1395
Author(s):  
Weicheng Lo ◽  
Sanidhya Nika Purnomo ◽  
Dwi Sarah ◽  
Sokhwatul Aghnia ◽  
Probo Hardini

Since 1900, Semarang City has been meeting its industrial water needs by pumping groundwater through its underlying aquifers. The trend toward exploiting groundwater resources has driven the number of deep wells and their production capacity to increase, and therefore leads to the water table to drop from time to time, which has been marked as one of the primary causes of land subsidence there. The main aim of the current study was to numerically model the temporal and spatial evolution of groundwater table under excess abstraction so that a groundwater management strategy can be accordingly drawn up for ensuing the sustainability of groundwater resources in the future. A series of numerical simulations were carried out to take into account hydrogeological data, artificial and natural discharges of deep wells, and boundary effects in Semarang City. The groundwater modeling is calibrated under two flow conditions of the steady state from 1970 to 1990 and the transient state from 1990 to 2005 for six observation wells distributed in Semarang City. Four scenarios that reflect potential management strategies were developed, and then their effectiveness was systematically investigated. The results of our study indicate that the implementation of proper groundwater control management and measure is able to restore the groundwater level to rise back in Semarang City, and in turn achieve the sustainability of groundwater resources.


2017 ◽  
Vol 74 (11) ◽  
pp. 1960-1973 ◽  
Author(s):  
André E. Punt ◽  
Malcolm Haddon ◽  
L. Richard Little ◽  
Geoffrey N. Tuck

Simulation is used to explore the effect of spatial heterogeneity and spatial closures on the ability of feedback-control management strategies to achieve goals relating to conservation and utilization of fishery resources. The operating model underlying the projections is based on pink ling, Genypterus blacodes, off southern Australia and assumes that animals are sedentary following settlement. The management strategies are able to move the resource towards the target level in the absence of spatial closures even though assessment results are biased. The probability of reducing the stock below its limit reference point is higher when growth rates vary spatially, but the effect is small. The probability of the stock being above its target reference point is lower when one of the smaller spatial areas is closed. However, performance is markedly different when a larger fraction of the total area is closed, with stock size being substantially larger than the target at the end of the projection period.


2014 ◽  
Vol 60 (No. 12) ◽  
pp. 574-579 ◽  
Author(s):  
Travlos IS ◽  
M. Lysandrou ◽  
V. Apostolidis

Effective weed control in perennial crops is a challenge due to the limited availability of registered herbicides and herbicide resistance. The objective of the study was to evaluate the efficacy of the herbicide GF-2581 (penoxsulam + florasulam) on broadleaf weeds in comparison with other commonly used herbicides. Field trials were conducted in olives, in Etoloakarnania (Agrinio region) for two years (2012 and 2013). Efficacy assessments were made at 30, 60, 90 and 120 days after treatment. The GF-2581 formulation provided excellent control of a broad spectrum of broadleaf weed species. The long-term control of Sonchus oleraceous, Conyza canadensis and Stellaria media, provided by GF-2581 during the growing season was significantly greater than that using flumioxazin. When combined with glyphosate or diquat, the level of control of these three weeds was improved. The GF-2581 agent applied pre-emergence followed 14 days later by application of glyphosate provided 100% control in 2012. Lower efficacy levels were observed in 2013 and may have been the result of higher rainfall when compared to 2012. GF-2581 is an effective herbicide product to control broadleaf weeds, as a part of integrated weed control management strategies in olives.


Plant Disease ◽  
2019 ◽  
Vol 103 (6) ◽  
pp. 1196-1205 ◽  
Author(s):  
Carlos Agustí-Brisach ◽  
Juan Moral ◽  
Dan Felts ◽  
Antonio Trapero ◽  
Themis J. Michailides

Botryosphaeriaceae and Diaporthaceae species are the causal agents of branch dieback of English walnut in California. In this study, the effects of the interaction between Neofusicoccum mediterraneum and Diaporthe rhusicola were evaluated in vitro by using mycelial plugs or spore suspensions and in vivo by inoculating shoots and epicarps (hulls) of walnut. Single inoculations of each species and different coinfection treatments were performed under laboratory or field conditions. The influence of shoot age and susceptibility of bark or pith tissues to N. mediterraneum and D. rhusicola infection after pruning was also evaluated. In in vitro experiments, spore germination of D. rhusicola was significantly (P < 0.0001) reduced in the presence of N. mediterraneum spores. When D. rhusicola was inoculated at 4 days before N. mediterraneum, a delay in lesion development in shoots and hulls was observed compared with the other two interaction treatments. One- to 2-year-old shoots were more susceptible to infection and colonization by N. mediterraneum than 3- to 4-year-old shoots. In young shoots, inoculation in the pith tissue resulted in longer lesions than those observed on shoots inoculated in the bark. No significant differences were observed between the development of internal or external necrosis and the age of the shoots, or the susceptibility of bark and pith to D. rhusicola infection. This information is essential to better understanding the complex situation of this walnut disease toward developing control management strategies.


Author(s):  
I. Lavkor Meena ◽  
I. Var ◽  
S. Saglam ◽  
O. Uckun ◽  
A. and O. Tekin ◽  
...  

In this study, aflatoxin and cyclopiazonic acid levels on the second crop of peanuts collected from 102 different research areas of Osmaniye and Adana, Turkey in 2016 was determined from harvest, drying, pre-storage and storage. During the periods of the research, it was found that aflatoxin levels in 86 out of 102 contaminated samples were ranged from 0.2 to 2177.2 ìg/kg. However, cyclopiazonic acid, another mycotoxin investigated in this study has not been found in any of the 102 peanut samples. When aflatoxin contamination compared in different periods; it was observed that the aflatoxin level in storage and drying (97%) periods were found to be higher than the harvest (66%) and pre-storage (71%). The statistical analysis showed that significant differences in the aflatoxins in drying, and storage periods. Therefore, for preventing grains from aflatoxins damage control management strategies need to be improved.


Author(s):  
Ahmad Sharieh ◽  
Ruba Abu Khurmah ◽  
Raja Masadeh ◽  
Abdullah Alzaqebah ◽  
Nesreen Alsharman ◽  
...  

Author(s):  
ANNABELLE VOLGMAN ◽  
Emelia Benjamin ◽  
Anne Curtis ◽  
Margaret Fang ◽  
Kathryn Lindley ◽  
...  

Atrial fibrillation (AF) remains a growing problem in the United States and worldwide, imposing a high individual and health system burden, including increased resource consumption due to repeated hospitalizations, stroke, dementia, heart failure, and death. This comprehensive review summarizes the most recent data on sex-related differences in risks associated with AF. Women with AF have increased risk of stroke and death compared to men, and possible reasons for this disparity are explored. Women also continue to have worse symptoms and quality of life, and poorer outcomes with stroke prevention, as well as with rate and rhythm control management strategies. Many current rhythm control treatment strategies for AF, including cardioversion and ablation, are used less frequently in women as compared to men, whereas women are more likely to be treated with rate control strategies or anti-arrhythmic drugs. Sex differences should be considered in treating women with AF to improve outcomes and women and men should be offered the same interventions for AF. We need to improve the evidence base to understand if variation in utilization of rate and rhythm control management between men and women represents health inequities or appropriate clinical judgement.


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