scholarly journals Reported Lead Levels in Different Environmental Matrices in Colombia

2021 ◽  
Vol 25 ◽  
Author(s):  
Carol Brigitte Hernández Rodríguez ◽  
Alvaro Martin Gutierrez-Malaxechebarria ◽  
Carlos Alfonso Zafra Mejía
Keyword(s):  
Policy Making ◽  
Large Scale ◽  
Control Measures ◽  
Scale Problem ◽  
Environmental Matrices ◽  
Exclusion Criteria ◽  
Target Values ◽  
Lead Levels ◽  
And Control ◽  
Qualitative Literature

Objective: The aim of this paper is to present a review of specific cases that reported lead concentrations in blood, objects, food, soil, bioindicators, air, and water in specific places in Colombia and evaluate the reported concentrations against target values. Materials and Methods: A systematic qualitative literature review of publications between 1995 and 2019 was done; using Boolean operators 1571 papers were identified, to which 3 inclusion and 4 exclusion criteria were applied. A total of 57 studies met the defined criteria. The reports in these studies were geo-localized and compared with acceptable values. Results and Discussion: Results suggest that lead is present in all environmental matrices, widely distributed in the Colombian territory, and that 72 % of the cases exceeded regulation limits. The percentage of noncompliance per environmental matrix was 89 % for blood samples, 71 % in food, 63 %, in soil, 89 % for bioindicators, 60 % for air, and 55 % for water. Conclusion: These results show that lead pollution is a large-scale problem in the country, more systematic studies are needed, and control measures, policy-making and regulatory updating should be pursued.

scholarly journals Heterogeneity and effectiveness analysis of COVID-19 prevention and control in major cities in China through time-varying reproduction number estimation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Qing Cheng ◽  
Zeyi Liu ◽  
Guangquan Cheng ◽  
Jincai Huang
Keyword(s):  
Prevention And Control ◽  
Large Scale ◽  
Reproduction Number ◽  
Correlation Method ◽  
Control Measures ◽  
Time Varying ◽  
Short Period ◽  
Significant Difference ◽  
Prevention And Control Measures ◽  
And Control

AbstractBeginning on December 31, 2019, the large-scale novel coronavirus disease 2019 (COVID-19) emerged in China. Tracking and analysing the heterogeneity and effectiveness of cities’ prevention and control of the COVID-19 epidemic is essential to design and adjust epidemic prevention and control measures. The number of newly confirmed cases in 25 of China’s most-affected cities for the COVID-19 epidemic from January 11 to February 10 was collected. The heterogeneity and effectiveness of these 25 cities’ prevention and control measures for COVID-19 were analysed by using an estimated time-varying reproduction number method and a serial correlation method. The results showed that the effective reproduction number (R) in 25 cities showed a downward trend overall, but there was a significant difference in the R change trends among cities, indicating that there was heterogeneity in the spread and control of COVID-19 in cities. Moreover, the COVID-19 control in 21 of 25 cities was effective, and the risk of infection decreased because their R had dropped below 1 by February 10, 2020. In contrast, the cities of Wuhan, Tianmen, Ezhou and Enshi still had difficulty effectively controlling the COVID-19 epidemic in a short period of time because their R was greater than 1.

A population model for Noogoora Burr (Xanthium occidentale).

1983 ◽  
Vol 5 (2) ◽  
pp. 54 ◽  
Author(s):  
RJ Martin ◽  
JA Carnahan
Keyword(s):  
Biological Control ◽  
Large Scale ◽  
Control Measures ◽  
Weed Biological Control ◽  
Two Phase ◽  
Eastern Australia ◽  
Seed Reserves ◽  
Control Procedures ◽  
Grazing Lands ◽  
And Control

Noogoora burr (Xanthium occidentale), an annual species, is an important weed of sheep grazing lands in eastern Australia. This paper describes a model of Noogoora bun population dynamics which enables alternative management and control procedures to be simulated. The model is based on a two-phase life cycle with a long-lived overlapping population of seeds and short-lived non- overlapping populations of plants. The model takes into account changes in soil seed reserves due to germination, decay and dispersal. Density dependent processes affecting seed production were incorporated by using Shinozaki's reciprocal yield equation and measure- ments were made of seed losses due to granivory by birds and mice. Simple rainfall records were used to derive the model which was used to predict changes in seed populations in various environments. Theoretical seed populations were close to those actually observed. The model was also used to predict how particular control measures might affect population densities and the types of organisms which might be appropriate for biological control of the weed. Biological control appears to be the only possible means of controlling the large scale infestations of Noogoora burr in semi- arid areas where landholders have abandoned conventional control techniques.

scholarly journals Heterogeneity and effectiveness analysis of COVID-19 prevention and control in major cities in China through time-varying reproduction numbers estimation

2020 ◽  
Author(s):  
Qing Cheng ◽  
Zeyi Liu ◽  
Guangquan Cheng ◽  
Jincai Huang
Keyword(s):  
Prevention And Control ◽  
Large Scale ◽  
Correlation Method ◽  
Control Measures ◽  
Time Varying ◽  
Reproduction Numbers ◽  
Short Period ◽  
Significant Difference ◽  
Novel Coronavirus ◽  
And Control

Abstract From December 31, 2019, a large-scale 2019 novel coronavirus disease (COVID-19) broke out in China. Tracking and analyzing the heterogeneity and effectiveness of cities’ prevention and control for COVID-19 epidemic is essential to design and adjust epidemic prevention and control. The number of newly infected cases in 25 China’s worst cities for COVID-19 epidemic from January 11 to February 10 was collected. The heterogeneity and effectiveness of these 25 cities’ prevention and control measures for COVID-19 were analyzed by using a estimate time-varying reproduction numbers method and a serial correlation method. The results shown that the effective reproduction number (R) in 25 cities showed a downward trend as a whole, but there was a significant difference in the R change trends among cities indicating that there was heterogeneity in the spread and control of COVID-19 in cities. Moreover, the COVID-19 control in 21 of 25 cities were effective and the risk of infection was decreasing due to their R had dropped below 1 on February 10, 2020 and the average decline of R in the past 5 days was greater than 0, while cities of Wuhan, Tianmen, Ezhou and Enshi were still difficult to effectively control the COVID-19 epidemic in a short period of time because their R was also greater than 1.

scholarly journals Overcoming Current and Preventing Future Nosocomial Outbreaks during the COVID-19 Pandemic: Lessons Learned at Three Hospitals in Japan

2021 ◽  
Vol 18 (19) ◽  
pp. 10226
Author(s):  
Makiko Komasawa ◽  
Myo Nyein Aung ◽  
Kiyoko Saito ◽  
Mitsuo Isono ◽  
Go Tanaka ◽  
...  
Keyword(s):  
Infection Control ◽  
Large Scale ◽  
Practical Knowledge ◽  
Care Delivery ◽  
Lessons Learned ◽  
Control Measures ◽  
Infection Prevention And Control ◽  
Infection Control Measures ◽  
Health Care Delivery Systems ◽  
And Control

Hospitals are increasingly challenged by nosocomial infection (NI) outbreaks during the ongoing coronavirus disease 2019 (COVID-19) pandemic. Although standardized guidelines and manuals regarding infection prevention and control (IPC) measures are available worldwide, case-studies conducted at specified hospitals that are required to cope with real settings are limited. In this study, we analyzed three hospitals in Japan where large-scale NI outbreaks occurred for hints on how to prevent NI outbreaks. We reviewed openly available information from each hospital and analyzed it applying a three domain framework: operation management; identification of infection status; and infection control measures. We learned that despite having authorized infection control teams and using existing standardized IPC measures, SARS-CoV-2 may still enter hospitals. Early detection of suspected cases and confirmation by PCR test, carefully dealing with staff-to-staff transmission were the most essential factors to prevent NI outbreaks. It was also suggested that ordinary training on IPC for staff does not always provide enough practical knowledge and skills; in such cases external technical and operational supports are crucial. It is expected that our results will provide insights into preventing NI outbreaks of COVID-19, and contribute to mitigate the damage to health care delivery systems in various countries.

scholarly journals Wet climate and transportation routes accelerate spread of human plague

2014 ◽  
Vol 281 (1780) ◽  
pp. 20133159 ◽  
Author(s):  
Lei Xu ◽  
Leif Chr. Stige ◽  
Kyrre Linné Kausrud ◽  
Tamara Ben Ari ◽  
Shuchun Wang ◽  
...  
Keyword(s):  
Large Scale ◽  
Control Measures ◽  
Long Distance ◽  
Quantitative Analyses ◽  
Novel Method ◽  
Wet Climate ◽  
Prevention And Control Measures ◽  
And Control ◽  
Transportation Routes ◽  
Transmission Speed

Currently, large-scale transmissions of infectious diseases are becoming more closely associated with accelerated globalization and climate change, but quantitative analyses are still rare. By using an extensive dataset consisting of date and location of cases for the third plague pandemic from 1772 to 1964 in China and a novel method (nearest neighbour approach) which deals with both short- and long-distance transmissions, we found the presence of major roads, rivers and coastline accelerated the spread of plague and shaped the transmission patterns. We found that plague spread velocity was positively associated with wet conditions (measured by an index of drought and flood events) in China, probably due to flood-driven transmission by people or rodents. Our study provides new insights on transmission patterns and possible mechanisms behind variability in transmission speed, with implications for prevention and control measures. The methodology may also be applicable to studies of disease dynamics or species movement in other systems.

scholarly journals DEVELOPMENT OF THE LEGAL FRAMEWORK OF PARLIAMENTARY CONTROL IN UZBEKISTAN: THE SUBSTANTIVE PROVISIONS OF THE LAW “ON PARLIAMENTARY CONTROL”

2016 ◽  
pp. 0-0
Author(s):  
Рахим Хакимов ◽  
Rakhim Khakimov
Keyword(s):  
Large Scale ◽  
Theoretical Study ◽  
Legal Framework ◽  
Control Measures ◽  
Control Functions ◽  
The Subject ◽  
The Law ◽  
The Republic ◽  
And Control

The article is devoted to the development of the constitutional and legal framework of parliamentary control in Uzbekistan. It provides an analysis, carried out during the years of independence, of large-scale, successive reforms aimed at strengthening the role, authority and control functions of the Parliament — the Oliy Majlis of the Republic of Uzbekistan. Particular attention is paid to the disclosure of the nature and the content of the Law “Оn parliamentary control” adopted in 2016. Separately, the issues concerning the subject structure of legal relations in the sphere of parliamentary control, the object of parliamentary control, the permissibility and the limits of parliamentary control, its forms, as well as measures taken by the parliamentary response by the results of the control measures are considered. The author made an attempt to justify the provisions of the Law of the Republic of Uzbekistan “On parliamentary control” scientifically and theoretically, identified a number of issues that require scientific and practical discussion and profound scientific and theoretical study.

scholarly journals Comparative evaluation of the transmissibility of SARS-CoV-2 variants of concern

2021 ◽  
Author(s):  
Liang Wang ◽  
Xavier Didelot ◽  
Yuhai Bi ◽  
George Fu Gao
Keyword(s):  
Comparative Evaluation ◽  
Prevention And Control ◽  
Large Scale ◽  
Reproduction Number ◽  
Genomic Data ◽  
Control Measures ◽  
Global Pandemic ◽  
Time Period ◽  
Exact Reproduction ◽  
And Control

Since the start of the SARS-CoV-2 pandemic in late 2019, several variants of concern (VOC) have been reported, such as B.1.1.7, B.1.351, P.1, and B.1.617.2. The exact reproduction number Rt for these VOCs is important to determine appropriate control measures. Here, we estimated the transmissibility for VOCs and lineages of SAR-CoV-2 based on genomic data and Bayesian inference under an epidemiological model to infer the reproduction number (Rt). We analyzed data for multiple VOCs from the same time period and countries, in order to compare their transmissibility while controlling for geographical and temporal factors. The lineage B had a significantly higher transmissibility than lineage A, and contributed to the global pandemic to a large extent. In addition, all VOCs had increased transmissibility when compared with other lineages in each country, indicating they are harder to control and present a high risk to public health. All countries should formulate specific prevention and control policies for these VOCs when they are detected to curve their potential for large-scale spread.

scholarly journals Diplomatic Collaborative Solutions to Assure the Adoption of the European Single Market Amid the COVID-19 Pandemic

2021 ◽  
Vol 9 ◽  
Author(s):  
Silvia Logar ◽  
Rizzardo Alessandro
Keyword(s):  
Large Scale ◽  
Single Market ◽  
Control Measures ◽  
Collaborative Systems ◽  
Health Crisis ◽  
Public Health Crisis ◽  
Full Implementation ◽  
European Single Market ◽  
Bilateral Cooperation ◽  
And Control

As the COVID-19 crisis has shown, the lack of harmonized and coordinated actions superseding national borders represented a limit to the full implementation of already existing legal binding instruments at the European level. It is recognized that the existing levels of globalization have contributed to accelerate the large-scale transmission of viruses and increased the likelihood of a pandemic public health crisis. This article aims to highlight the importance of greater bilateral cooperation to mitigate the health and economic impact of the coronavirus disease 2019 (COVID-19) pandemic. It focuses on the implementation of diplomatic collaborative systems to assure the full implementation of the European single market as well as the adoption of standardized health information platforms as a part of pandemic preparedness and control measures.

scholarly journals Occupational hazards in medium and large scale industrial sectors in Sri Lanka – Experience of a developing country

2019 ◽  
Author(s):  
S.M. Arnold ◽  
MSK Wickrematilake ◽  
RMSD Fernando ◽  
HMRC Sampath ◽  
RPP Karunapema ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Large Scale ◽  
Raw Materials ◽  
Industrial Sector ◽  
Control Measures ◽  
Occupational Hazards ◽  
Physical Hazards ◽  
Industrial Sectors ◽  
Poor Ventilation ◽  
And Control

Abstract Objective Occupational hazards is an area where many countries have begun to pay more emphasis as it affects the health of many particularly in developing countries. However, documented literature is scarce in this regard although occupational hazards are common in workplaces. The study was carried out with the objective of describing the physical hazards and control measures adopted in the formal medium and large-scale industrial sector in Sri Lanka. Results Physical hazards detected in the workplaces were; excessive noise (78.3%), poor light (58%), increased temperature (65.2%), and poor ventilation (68.1%). Over 50% of large machinery and 33% of medium-scale machinery were not adequately guarded. Nearly 41% of the machinery were difficult to operate, of them 36.2% had controls in positions which were hard to reach. Of safety measures adopted, only 34.8% had proper demarcation of areas with 28.9% displaying safety signs. Housekeeping was poor in 59.4% and less than 40% had safe storage of raw materials and end products.

scholarly journals Prevalence of bovine tuberculosis in dairy cattle in China during 2010–2019: A systematic review and meta-analysis

2021 ◽  
Vol 15 (6) ◽  
pp. e0009502
Author(s):  
Qing-Long Gong ◽  
Yu Chen ◽  
Tian Tian ◽  
Xiaobo Wen ◽  
Dong Li ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Bovine Tuberculosis ◽  
Large Scale ◽  
Meta Analysis ◽  
Control Measures ◽  
China National Knowledge Infrastructure ◽  
Cattle Industry ◽  
Health And Economic Development ◽  
Prevention And Control Measures ◽  
And Control

Background Bovine tuberculosis (bTB), caused by members of the Mycobacterium tuberculosis complex bacteria, mainly Mycobacterium bovis (M. bovis), is a major threat to public health and economic development. There has been no systematic epidemiological assessment concerning bTB in dairy cattle in China. Methodology/principal findings Literature related to bTB in China was retrieved from China National Knowledge Infrastructure (CNKI), PubMed, ScienceDirect, VIP Chinese Journals Database, and Wan Fang Database to build the first meta-analysis for estimating the prevalence and infection moderators of bTB in dairy cattle in China. A total of 100 relevant studies published from 2010 to 2019 were included. We estimated the overall prevalence of bTB was 2.4% (95% CI: 2.1–2.8) during this decade. In the sampling year subgroup, the prevalence was lowest in 2017 or later at 0.8% (95% CI: 0.3–1.5). The lowest prevalence was 0.7% (95% CI: 0.5–1.0) in Northwestern China. The lowest prevalence was 2.1% (95% CI: 1.8–2.5) using SIT test. Heifer cows had the highest prevalence, which was 27.1% (95% CI: 9.7–49.2). The prevalence in scale farming was 3.7% (95% CI: 3.1–4.3), significantly higher than that in free-range farming (1.7%, 95% CI: 1.1–2.4). The prevalence of bTB was highest in summer at 4.0% (95% CI: 1.7–7.0). In addition, the influence of different geographical factors (altitude, longitude, latitude, precipitation, temperature, humidity) on the prevalence was analyzed. Conclusions/significance The results showed that bTB was widespread in China but has been gradually reduced through concerted national intervention. It is suggested that different countries should formulate corresponding prevention and control measures according to the epidemic situation in its cattle industry. Enhanced monitoring of warm and humid areas may play an important role in reducing the incidence of bTB. In addition, when large-scale breeding is promoted, attention should be paid to standardizing breeding management and improving animal welfare to reduce the prevalence of bTB in cattle.

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