scholarly journals Artificial lighting impairs mate attraction in a nocturnal capital breeder

2020 ◽  
Vol 223 (19) ◽  
pp. jeb229146
Author(s):  
Alan J. A. Stewart ◽  
Craig D. Perl ◽  
Jeremy E. Niven
Keyword(s):  
Light Intensity ◽  
Artificial Light ◽  
Negative Effects ◽  
Artificial Lighting ◽  
Artificial Light Source ◽  
Capital Breeder ◽  
Population Survival ◽  
Insect Populations ◽  
The Impact

ABSTRACTArtificial lighting at night (ALAN) is increasingly recognised as having negative effects on many organisms, though the exact mechanisms remain unclear. Glow worms are likely susceptible to ALAN because females use bioluminescence to signal to attract males. We quantified the impact of ALAN by comparing the efficacy of traps that mimicked females to attract males in the presence or absence of a white artificial light source (ALS). Illuminated traps attracted fewer males than did traps in the dark. Illuminated traps closer to the ALS attracted fewer males than those further away, whereas traps in the dark attracted similar numbers of males up to 40 m from the ALS. Thus, ALAN impedes females' ability to attract males, the effect increasing with light intensity. Consequently, ALAN potentially affects glow worms' fecundity and long-term population survival. More broadly, this study emphasises the potentially severe deleterious effects of ALAN upon nocturnal insect populations.

scholarly journals Design of Monitoring System for Measuring the Impact of Light Intensity of Artificial Lights on Human Circadian Cycles in Web-Based Inpatient Rooms

2018 ◽  
Vol 6 (1) ◽  
pp. 28-32
Author(s):  
Dian Agus Kurniawan
Keyword(s):  
Light Intensity ◽  
Monitoring System ◽  
Light Exposure ◽  
Human Life ◽  
Artificial Light ◽  
Web Based ◽  
Artificial Lighting ◽  
Morning Temperature ◽  
The Impact ◽  
Room Lighting

Light is a source of energy that is needed in human life. In hospitals, artificial lighting is very necessary, especially in operating rooms that are impermeable to natural light and must be sterile from room bacteria. Artificial light exposure that does not meet the SNI standard for room lighting causes various problems. Therefore, in this study, a tool to control the intensity of artificial light according to the SNI standard in hospitals was designed. This research uses measurement, calculation and comparison methods. The first measurement is to measure the value of the light intensity of the lamp, then measure the temperature value in the room, the last one is to sterilize the room bacteria. From these measurements, values ??are obtained to be compared in reaching conclusions. From this research, it can be concluded that the monitoring system with the LDR light sensor can read the value of the light intensity properly according to the digital lux meter in the morning at 400 lux, 200 lux in the daytime, and 120 lux at night. Then the DHT-11 sensor can read the temperature value in the room according to the HTC comparison with the morning temperature is 25 degrees, daytime 29 degrees, afternoon 27 days, and night is 24 degrees. To help kill room bacteria, a Utraviolet lamp is used with a light for 2 hours in the morning.

Welfare Use in Japan: Trends and Determinants

2007 ◽  
pp. 88
Author(s):  
Wataru Suzuki ◽  
Yanfei Zhou
Keyword(s):  
Time Series ◽  
Longitudinal Data ◽  
Time Series Data ◽  
Positive Impact ◽  
Series Data ◽  
Negative Effects ◽  
Long Time ◽  
Welfare Use ◽  
The Impact

This article represents the first step in filling a large gap in knowledge concerning why Public Assistance (PA) use recently rose so fast in Japan. Specifically, we try to address this problem not only by performing a Blanchard and Quah decomposition on long-term monthly time series data (1960:04-2006:10), but also by estimating prefecturelevel longitudinal data. Two interesting findings emerge from the time series analysis. The first is that permanent shock imposes a continuously positive impact on the PA rate and is the main driving factor behind the recent increase in welfare use. The second finding is that the impact of temporary shock will last for a long time. The rate of the use of welfare is quite rigid because even if the PA rate rises due to temporary shocks, it takes about 8 or 9 years for it to regain its normal level. On the other hand, estimations of prefecture-level longitudinal data indicate that the Financial Capability Index (FCI) of the local government2 and minimum wage both impose negative effects on the PA rate. We also find that the rapid aging of Japan's population presents a permanent shock in practice, which makes it the most prominent contribution to surging welfare use.

scholarly journals Zoom fatigue wśród nastolatków

2021 ◽  
pp. 167-178
Author(s):  
Ewa Pudłowska
Keyword(s):  
Distance Learning ◽  
School Psychologist ◽  
Social Phenomenon ◽  
Stanford University ◽  
Social Changes ◽  
Negative Effects ◽  
Long Distance ◽  
School Activities ◽  
The Impact

The aim of this study is to analyze a new social phenomenon that appeared during the SARS-CoV-2 pandemic, i.e. zoom fatigue. Zoom fatigue is the result of fatigue from long-term conferences, which can also be related to long-term school lessons during distance learning. The main considerations will focus on teenagers, namely on the impact of zoom fatigue on teenagers in Polish schools and on observation of students from technical secondary schools by a school psychologist. This paper, based on the results of research conducted at Stanford University and by Social Changes, is also an attempt to answer the questions: what risks may arise from the phenomenon of zoom fatigue and the threat posed by distance learning for teenagers in the era of Covid-19. It will also attempt to answer the question of how to help students cope with the fatigue of long distance school activities and find ways to help teens deal with isolation and the negative effects of zoom fatigue and find ways to overcome zoom fatigue.

scholarly journals CONGENITAL ANOMALIES IN CHILDREN OF UKRAINE: 25-YEAR MONITORING OF MORBIDITY AND PREVALENCE

2020 ◽  
Vol 73 (10) ◽  
pp. 2193-2197
Author(s):  
Oleksandr P. Volosovets ◽  
Tetyana O. Kryuchko ◽  
Viktor L. Veselskyi ◽  
Sergii P. Kryvopustov ◽  
Tetiana M. Volosovets ◽  
...  
Keyword(s):  
Congenital Anomalies ◽  
Congenital Defects ◽  
Negative Effects ◽  
Epidemiological Analysis ◽  
Child Population ◽  
Total Incidence ◽  
Industrial Regions ◽  
The Impact ◽  
Long Term Studies

The aim: Of the work was to study 25-year trends in the incidence of congenital anomalies in the child population of Ukraine in order to determine the impact of ecotoxic environmental factors on their development, in particular radiation. Materials and methods: Methods of statistical assessment, epidemiological analysis of materials at the Center for Medical Statistics of the MOH of Ukraine were used. Results: The rate of congenital anomalies growth for the recent 25 years has exceeded the growth rate of the total incidence in the child population of Ukraine by 1.6 times, occupying the leading place in Europe by the level of environment pollution. Over the last 25 years, the growth of the Ukrainian children’s congenital anomalies incidence level by 59.5% is observed, mostly in children from large industrial regions of Ukraine, due to the significant ecotoxic effect of pollutants on the child’s body. Children living permanently in the areas contaminated by the Chernobyl accident had significantly higher rates of congenital anomalies in 1986 than in the early 1990s, but over the recent 25 years the incidence in this contingent has decreased. Conclusions: The results of such long-term studies performed by a group of leading Ukrainian scientists from different regions of Ukraine indicate that in children experiencing negative effects of ecotoxic factors, including radiation, an increase in the detection and prevalence of congenital defects is observed, which requires complex international and intersectoral measures to prevent and reduce child mortality.

Acceptance and Feasibility of Seated Elliptical Pedaling to Replace Sedentary Behavior in Older Adults

2020 ◽  
Vol 28 (6) ◽  
pp. 844-853
Author(s):  
Nicholas L. Lerma ◽  
Chi C. Cho ◽  
Ann M. Swartz ◽  
Hotaka Maeda ◽  
Young Cho ◽  
...  
Keyword(s):  
Older Adults ◽  
Light Intensity ◽  
Health Outcomes ◽  
Sedentary Behavior ◽  
Activity Monitor ◽  
Group Differences ◽  
Significant Group ◽  
Significant Difference ◽  
The Impact

The purpose of this study was to explore the feasibility and acceptability of a seated pedaling device to reduce sedentary behavior (SB) in the homes of older adults. Methods: Each participant (N = 20) was outfitted with an activity monitor and seated pedaling device in the home for 7 days and randomly assigned to one of four light-intensity pedaling groups (15, 30, 45, and 60 min/day). Results: There was 100% adherence in all groups and significant group differences in the minutes pedaled per day (p < .001), with no significant difference in the total pedaling days completed (p = .241). The 15-, 30-, 45-, and 60-min groups experienced a 4.0%, 5.4%, 10.6%, and 11.3% reduction in SB on the days pedaled, respectively. Conclusion: Clinically relevant reductions in SB time were achievable in this 1-week trial. Long-term adherence and the impact of replacing SB with seated light activities on geriatric-relevant health outcomes should be investigated.

scholarly journals Rapid evolution by spontaneous mutation increases genetic diversity facilitating plant population survival

2018 ◽  
Author(s):  
Henning Nottebrock ◽  
Mao-Lun Weng ◽  
Matthew T Rutter ◽  
Charles B. Fenster
Keyword(s):  
Large Scale ◽  
Community Dynamics ◽  
Spontaneous Mutation ◽  
Rapid Evolution ◽  
Potential Effect ◽  
Small Scale ◽  
Negative Effects ◽  
Population Survival ◽  
Population And Community Dynamics ◽  
The Impact

Using a mechanistic eco-evolutionary trait-based neighborhood-model, we quantify the impact of mutations on spatial interactions to better understand the potential effect of niche evolution through mutations on the population dynamics of Arabidopsis thaliana. We use 100 twenty-fifth generation mutation accumulation (MA) lines (genotypes) derived from one founder genotype to study mutational effects on neighbor responses in a field experiment. We created individual-based maps (15,000 individuals), including phenotypic variation, to quantify mutational effects within genotypes versus between genotypes on reproduction and survival. At small-scale, survival is enhanced but reproduction is decreased when a genotype is surrounded by different genotypes. At large-scale, seed set is facilitated by different genotypes while the same genotype has either no effect or negative effects. Mutations may provide a mechanism for plants to quickly evolve niches and may drive competition, facilitation and selection with profound consequences for future population and community dynamics.

scholarly journals The mutational load in natural populations is significantly affected by high primary rates of retroposition

2021 ◽  
Vol 118 (6) ◽  
pp. e2013043118 ◽  
Author(s):  
Wenyu Zhang ◽  
Chen Xie ◽  
Kristian Ullrich ◽  
Yong E. Zhang ◽  
Diethard Tautz
Keyword(s):  
Gene Evolution ◽  
Natural Populations ◽  
Distribution Patterns ◽  
Mutational Load ◽  
Negative Effects ◽  
Single Nucleotide ◽  
Species Comparisons ◽  
The Impact ◽  
Profiling Analysis

Gene retroposition is known to contribute to patterns of gene evolution and adaptations. However, possible negative effects of gene retroposition remain largely unexplored since most previous studies have focused on between-species comparisons where negatively selected copies are mostly not observed, as they are quickly lost from populations. Here, we show for natural house mouse populations that the primary rate of retroposition is orders of magnitude higher than the long-term rate. Comparisons with single-nucleotide polymorphism distribution patterns in the same populations show that most retroposition events are deleterious. Transcriptomic profiling analysis shows that new retroposed copies become easily subject to transcription and have an influence on the expression levels of their parental genes, especially when transcribed in the antisense direction. Our results imply that the impact of retroposition on the mutational load has been highly underestimated in natural populations. This has additional implications for strategies of disease allele detection in humans.

The impact of food aid on world malnutrition

1981 ◽  
Vol 35 (2) ◽  
pp. 329-354 ◽  
Author(s):  
James N. Schubert
Keyword(s):  
Nutritional Status ◽  
Food Production ◽  
Developed Countries ◽  
Food Aid ◽  
Control Group ◽  
Negative Effects ◽  
Alternative Hypotheses ◽  
Long Term Impact ◽  
The Impact

Does food aid enhance or diminish the nutritional status of recipient populations in less developed countries? In proposing that the long-term impact is negative, critics have argued that aid depresses local food production, is maldistributed and mismanaged such that it does not reach the needy in sufficient quantities, or, where effective, that aid merely reduces the death rate relative to the birth rate, permitting more people to survive at the margin of existence. This study explores the long-term impact of U.S. Public Law 480 food aid through a crossnational analysis of aggregate data on aid receipts and change in nutritional status over the period from 1962 through 1974. Alternative hypotheses are tested through least squares methods and.mean difference tests in the framework of a nonequivalent control group, quasi-experimental design. This study supports the following generalizations: food aid is significantly related with improved nutritional status; the greater the aid, the greater the improvement in nutrition; higher aid recipients do not have significantly lower rates of growth in domestic food production; higher aid recipients do not have higher rates of population growth; and food aid may lead to greater meat consumption among higher aid recipients. Negative effects, experienced in some countries at some times, are not systematically incurred by all food aid recipients over time. In general, food aid does improve nutrition.

scholarly journals The Impact of Uncertainty on State-Level Housing Markets of the United States: The Role of Social Cohesion

2021 ◽  
Vol 13 (6) ◽  
pp. 3065
Author(s):  
Linyan Dai ◽  
Xin Sheng
Keyword(s):  
United States ◽  
Social Cohesion ◽  
Housing Markets ◽  
State Level ◽  
The United States ◽  
Negative Effects ◽  
Housing Returns ◽  
The Impact

While considering the role of social cohesion, we analyse the impact of uncertainty on housing markets across the 50 states of the United States, plus the District of Columbia, using the local projection method for panel data. We find that both short-term and long-term measurements of macroeconomic and financial uncertainties reduce real housing returns, with the strongest effect originated from the macro-economic uncertainty over the long term. Moreover, the degree of social cohesion does not change the nature of the impact of uncertainty on real housing returns dramatically, but the size of the negative effects is relatively large for states with low social cohesion.

scholarly journals Help in controlling pain in children: pediatrician’s tips

2021 ◽  
pp. 263-268
Author(s):  
Lada S. Starostina
Keyword(s):  
Adverse Reactions ◽  
Invasive Procedures ◽  
Negative Effects ◽  
Oil Emulsion ◽  
Surgical Manipulations ◽  
Social Components ◽  
The Impact ◽  
Receptor Apparatus

The problem of anesthesia includes mainly the treatment of pre-existing pain or surgical manipulations with the use of anesthesia. However, the problems of pain prevention during traumatic (invasive) procedures are also actively solved, methods of prevention are improved and expanded, taking into account the impact of pain on the quality of life. Pain is not a simple physiological process of conducting stimulation from the receptor apparatus to the CNS structures, but a complex phenomenon that includes biological, emotional, psychological and social components. Pain is one of the earliest formed psychophysical functions; by the 30 th week of fetal development all pathways of pain conduction and perception are already formed, so both fetus and child are already capable of perceiving pain, and the intensity is often even higher than in adults. Many believe that: young children do not feel pain because their central nervous system is immature; children remember themselves from the age of 4–5 years, so they do not remember the pain they suffered, so all surgical problems that cause pain should be addressed as early as possible; if the child is sleeping or playing, he or she has no pain, etc. Current research has demonstrated significant short-term adverse reactions and long-term negative effects in children in response to pain-related manipulations. Anesthesia of intact skin was previously impossible without prior painful anesthetic injection. Today, other ways of administering anesthetics are used as alternatives: oral, in enemas or suppositories, locally as sprays, ointments, or by application. To address the pain associated with invasive procedures, the effectiveness of a 5% local anesthetic cream based on a water-oil emulsion of lidocaine and prilocaine (1:1), which has good absorption properties, has been studied. Using local anesthesia can prevent and/or reduce the risk of pain-induced stress. Considering the results of these studies, the use of a local combined anesthetic containing 2.5% lidocaine and 2.5% prilocaine may be suggested.

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