scholarly journals A Research Overview of the Siltation Loss Controls and Capacity Recovery Processes in China’s Reservoirs

2018 ◽  
Vol 246 ◽  
pp. 01086
Author(s):  
H H Hu ◽  
A J Deng ◽  
J G Chen ◽  
H L Shi ◽  
M Ye
Keyword(s):  
Service Life ◽  
Control Measures ◽  
Recovery Processes ◽  
Reservoir Siltation ◽  
Research Findings ◽  
Loss Control ◽  
And Control ◽  
Research Studies

There are many reservoirs in China with serious siltation issues which are affecting the function and safety of the reservoirs. Recently, research studies have been carried out regarding siltation loss control and capacity recovery technology due to the decreases in suitable dam sites for establishing reservoirs, and the increasingly serious siltation losses which have been occurring in the present reservoirs. The results of these studies have been of great significance to the partial recoveries of the siltation capacities of reservoirs, improvements in the respective efficiencies of the current reservoirs, and the prolonging of the service life the reservoirs. This study presented a simple review of the previous research findings regarding the current siltation loss situations and controls, as well as the capacity recoveries which have been achieved. Also, this study proposed the urgent need for in-depth examinations to be conducted pertaining to the national investigations of the reservoir siltation status in China, as well as a review of the current mechanisms and control measures for reservoir siltation losses.

scholarly journals Atmospheric Relative Humidity Can Increase the Spread of COVID-19

2020 ◽  
Author(s):  
Qing Zheng ◽  
Lei Wang ◽  
Hongbin Wang ◽  
Wenjing Gui
Keyword(s):  
Relative Humidity ◽  
Prevention And Control ◽  
Meteorological Factors ◽  
Control Measures ◽  
The World ◽  
Research Findings ◽  
Atmospheric Relative Humidity ◽  
Increasing Risk ◽  
Prevention And Control Measures ◽  
And Control

Abstract COVID-19 has been spreading around the world since the end of 2019, and there is no sign of a slowdown. Previous studies on seasonality of similar infectious diseases have hinted that meteorological factors may influence COVID-19 outbreaks as well1. Here we show, based on data collected in 132 cities of China, that relative humidity, as an essential meteorological indicator, is positively correlated with the growth rate of incidence of COVID-19, which contradicts previous research findings. Our result suggests an increasing risk of COVID-19 cases as summer and rain seasons arrive in many places of the world. They also help countries and regions to formulate pandemic prevention and control measures and policies according to local meteorological characteristics.

Inquiry Teaching in Social Studies and the Social Sciences: A Critical Review of Research Findings 1967–1972

1975 ◽  
Vol 19 (3) ◽  
pp. 276-283
Author(s):  
Colin J. Marsh
Keyword(s):  
Social Sciences ◽  
Social Studies ◽  
Teaching Method ◽  
Inquiry Teaching ◽  
Control Groups ◽  
The Social ◽  
Research Designs ◽  
Research Findings ◽  
And Control ◽  
Research Studies

In this paper, twenty-eight recent research studies on inquiry teaching in social studies and the social sciences are reviewed. Although a number of statistically significant results were claimed by the respective researchers, methodological deficiencies in many of the studies greatly reduce the importance of their efforts. Reference is made to a number of research deficiencies, including unsuitable evaluation instruments, lack of comparability of groups, lack of comparability of tasks and instructors for experimental and control groups and inadequate research designs. Although inquiry teaching has become widely espoused as a teaching method in schools, there are few substantial research studies to support its superiority over other teaching methods.

A Framework for Developing Research Protocols for Evaluation of Microbial Hazards and Controls during Production That Pertain to the Quality of Agricultural Water Contacting Fresh Produce That May Be Consumed Raw

2012 ◽  
Vol 75 (12) ◽  
pp. 2251-2273 ◽  
Author(s):  
LINDA J. HARRIS ◽  
JEFF BENDER ◽  
ELIZABETH A. BIHN ◽  
TYANN BLESSINGTON ◽  
MICHELLE D. DANYLUK ◽  
...  
Keyword(s):  
Fresh Produce ◽  
Crop Protection ◽  
Control Measures ◽  
Future Research ◽  
Agricultural Water ◽  
Safety Hazards ◽  
Design Studies ◽  
And Control ◽  
Research Studies

Agricultural water may contact fresh produce during irrigation and/or when crop protection sprays (e.g., cooling to prevent sunburn, frost protection, and agrochemical mixtures) are applied. This document provides a framework for designing research studies that would add to our understanding of preharvest microbial food safety hazards and control measures pertaining to agricultural water. Researchers will be able to use this document to design studies, to anticipate the scope and detail of data required, and to evaluate previously published work. This document should also be useful for evaluating the strength of existing data and thus should aid in identifying future research needs. Use of this document by the research community may lead to greater consistency or comparability than currently exists among research studies, which may ultimately facilitate direct comparison of hazards and efficacy of controls among different commodities, conditions, and practices.

Knowledge and Awareness of Dengue Fever

2018 ◽  
pp. 219-222
Author(s):  
Y. Arockia Suganthi ◽  
Chitra K. ◽  
J. Magelin Mary
Keyword(s):  
Dengue Fever ◽  
Prevention And Control ◽  
Control Measures ◽  
Infection Transmission ◽  
Standard Guideline ◽  
The World ◽  
Different Types ◽  
Prevention And Control Measures ◽  
Dengue Prevention ◽  
And Control

Dengue fever is a painful mosquito-borne infection caused by different types of virus in various localities of the world. There is no particular medicine or vaccine to treat person suffering from dengue fever. Dengue viruses are transmitted by the bite of female Aedes (Ae) mosquitoes. Dengue fever viruses are mainly transmitted by Aedes which can be active in tropical or subtropical climates. Aedes Aegypti is the key step to avoid infection transmission to save millions of people in all over the world. This paper provides a standard guideline in the planning of dengue prevention and control measures. At the same time gives the priorities including clinical management and hospitalized dengue patients have to address essentially.

The Mediterranean Action Plan: A Regional Approach to Pollution Control

1986 ◽  
Vol 18 (9) ◽  
pp. 197-205
Author(s):  
Lj Jeftié ◽  
L. J. Saliba
Keyword(s):  
Mediterranean Sea ◽  
Action Plan ◽  
Control Measures ◽  
Industrial Wastes ◽  
Pollution Monitoring ◽  
Environmental Preservation ◽  
Agricultural Pesticides ◽  
The Mediterranean ◽  
A Prospective Study ◽  
And Control

Increasing concern over the deterioration of the Mediterranean sea as a result of increasing pollution by untreated sewage and industrial wastes, agricultural pesticides and fertilizers and oil discharges, led to a series of meetings between 1970 and 1974, and finally to the UNEP-sponsored Mediterranean Action Plan, adopted by governments of the region in 1975 and ongoing since that time. The legal component of the Plan includes a framework Convention and four protocols; the environmental assessment component (the MED POL programme) consists of national pollution monitoring programmes, and research projects conducted by Mediterranean institutions; the environmental management component consists of the Blue Plan (a prospective study combining socio-economic development with environmental preservation) and the Priority Actions Programme (a series of sub-region sectoral projects in defined areas). The Plan has been financed by Mediterranean States since 1979, and is managed by UNEP with the cooperation of other competent UN Agencies. During the last ten years, activities undertaken have improved knowledge of the state of pollution of the Mediterranean sea, and facilitated joint regional action in the form of preventive and control measures.

An evaluation model of 2019-nCoV prevention effectiveness based on immigration data in China (Preprint)

2020 ◽  
Author(s):  
Qiangsheng Huang
Keyword(s):  
Prevention And Control ◽  
Time Window ◽  
Evaluation Model ◽  
Control Measures ◽  
Related Data ◽  
The Face ◽  
Prevention And Control Measures ◽  
And Control ◽  
Best Fit

BACKGROUND As of the end of February 2020, 2019-nCoV is currently well controlled in China. However, the virus is now spreading globally. OBJECTIVE This study aimed to evaluate the effectiveness of outbreak prevention and control measures in a region. METHODS A model is built for find the best fit for two sets of data (the number of daily new diagnosed, and the risk value of incoming immigration population). The parameters (offset and time window) in the model can be used as the evaluation of effectiveness of outbreak prevention and control. RESULTS Through study, it is found that the parameter offset and time window in the model can accurately reflect the prevention effectiveness. Some related data and public news confirm this result. And this method has advantages over the method using R0 in two aspects. CONCLUSIONS If the epidemic situation is well controlled, the virus is not terrible. Now the daily new diagnosed patients in most regions of China is quickly reduced to zero or close to zero. Chinese can do a good job in the face of huge epidemic pressure. Therefore, if other countries can do well in prevention and control, the epidemic in those places can also pass quickly.

Investigation on emotion and behavior of children aged 1-11 during the pandemic of COVID-19: A Cross-sectional study in Guizhou, China (Preprint)

2020 ◽  
Author(s):  
Yushi Mo ◽  
Yan Luo ◽  
Hong Li ◽  
Dewei Xiao ◽  
Shuqing Liu ◽  
...  
Keyword(s):  
Behavioral Problems ◽  
Prevention And Control ◽  
Online Survey ◽  
Sleep Problems ◽  
Emotional Problems ◽  
Control Measures ◽  
Emotional And Behavioral Problems ◽  
Guizhou Province ◽  
Cross Sectional ◽  
And Control

BACKGROUND In face of the sudden epidemic of COVID-19, strict prevention and control measures had been urgently carried out all over China. Because of the long-term home quarantine, all kinds of people were affected by it. OBJECTIVE In order to understand the mental health of children during the pandemic of COVID-19, this study investigated the prevalence and characteristics of emotional and behavioral problems of children aged 1-11 in Guizhou. METHODS Based on the online survey platform, the survey link was pushed through Wechat in April 2020. Electronic questionnaires were used to investigate children's demographic characteristics, emotional or behavioral problems. RESULTS A total of 3505 valid questionnaires were received from 9 prefectures and cities in Guizhou Province. 39.67% of the children in the 1-2-year-old group had emotional problems. 17.63% of the children agd 3-5 years had behavioral or emotional problems. And 23.57% of the children agd 6-11 years havd behavioral problems. CONCLUSIONS During the home quarantine period of prevention and control of COVID-19, even young children were adversely affected. The prevalence of emotional and behavioral problems in children was high, which was mainly manifested as anxiety, difficulty in concentration and sleep problems.

Sign in / Sign up

Export Citation Format

Share Document