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Iot Forest Environmental Factors Collection Platform Based On Zigbee

Abstract

Nowadays the development of Internet of Things (IoT) technology has witnessed great changes in the world. As it has often been mentioned, IoT Environment Monitoring Technologies and IOT Smart Home Technologies have been gradually accepted by people and have good prospects for development. Now we can research a networking based intelligent platform to monitor our forest environmental factors in time with the new IoT technology based on ZIGBEE protocol. ZIGBEE based networking technologies has the advantages of low power dissipation, low data rate and high-capacity transportation, which makes it more suitable for the design of the node of forest environmental factors collection platform. So, we are going to discuss a kind of IoT forest environment factors collection platform based on ZIGBEE protocol.

Open access
The influence of selected environmental factors on the time of natural menopause in women living in the Małopolskie voivodeship

Abstract

The main objective of the study is to determine which of the chosen environmental factors and selected groups of such factors alter the time of natural menopause in women living in the Małopolska region. Two hundred and thirty two women aged over 40 years were investigated in a cross-sectional survey in Cracow and the surrounding area. Among them 165 women who had undergone natural menopause and had their last bleeding at least 12 month prior to the interview were chosen. To estimate the age at menopause, a retrospective method was used. Univariate and multivariate methods were employed to estimate association of age at natural menopause with factors of interest. Mean age at natural menopause was 50.32 years (SD=3.82). Among biological and socio-economic factors, only the length of the reproductive period (H=106.07; p=0.000) and the age at the time of the first birth (R=0.18; p=0.020) turned out to be associated with the age at natural menopause in the studied group. The length of the smoking period (R=-0.17; p=0.031), the amount (F=3.25; p=0.04) and frequency of alcohol consumed (H=6.95; p=0.031) were the environmental factors related to the time of menopause. Women who drank more and smoked over longer period of time were likely to experience menopause earlier than their less drinking and shorter smoked counterparts. Three factors taken together, frequency of smoking, alcoholic intake and the age the tobacco addiction started (F=3.87; p=0.050), as well as the consumption of strong alcoholic drinks and the early start of tobacco addiction (F=2.85; p=0.026) were significantly related to the occurrence of natural menopause

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The Effect of Seasonal Changes on Freshwater Fish Assemblages and Environmental Factors in Bukit Merah Reservoir (Malaysia)

Abstract

Seasonal changes of freshwater fish assemblages and environmental factors in Bukit Merah Reservoir were carried out from January-February 2013 (dry season) to March-April 2013 (wet season) by measuring several physico-chemical parameters such as dissolved oxygen (DO), water temperature, pH, water conductivity, total dissolved solids (TDS) and water clarity. 19 fish species comprising of 10 families were collected by using experimental gill nets with different mesh sizes at four different sampling stations. Mean CPUE for total catch and biomass were significantly different between dry and wet season (p < 0.05). Based on a T-test analysis, water temperature, pH and conductivity were significantly different (p < 0.05) between seasons whereas a one-way ANOVA displayed a significant difference in TDS and water clarity between sampling stations (p < 0.05), implicating that those factors did not give major influence towards other parameters in a man-made reservoir. From all fish species studied, only mean CPUE for individuals (CPUEn) of Osteochilus vittatus and Oxygaster anomalura had a significant difference between seasons (p < 0.05); probably an indicator of their migration season

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Responses of Aspergillus niger to selected environmental factors

Abstract

Four wild type strains of A. niger were collected from soil and stream sediments representing environments with variable level of As, Sb, Al, Fe, Cd, Cu, and Zn contamination. Banská Štiavnica-Šobov (S), Pezinok-Kolársky vrch (P) and Slovinky (Sl) represent contaminated localities. Locality Gabčíkovo (G) was as a control site. The influence of toxic elements in these substrates on fungal growth, colony size, enzymatic activity, production of organic acids and their pelletization in water suspensions with montmorillonite was studied. The aim of our study was to find out how the wild type strains from (contaminated) environment will behave in different model solutions. We also wanted to add some new information in this area of study, because that there is some gap in the available knowledge.

Open access
Asthma and Environmental Factors in Children

exposure and incidence of asthma and wheeze: systematic review and meta-analysis. Pediatrics, 2012. 129(4): p. 735-44. 18. Chan-Yeung, M., et al. Early environmental determinants of asthma risk in a high-risk birth cohort. Pediatr Allergy Immunol, 2008. 19(6): p. 482-9. 19. Gaffin, J.M., W. Kanchongkittiphon, and W. Phipatanakul, Perinatal and early childhood environmental factors influencing allergic asthma immunopathogenesis. Int Immunopharmacol, 2014. 22(1): p. 21-30. 20. Carlsen, K.H. and K.C. Lodrup Carlsen, Parental

Open access
Fatigue Cracks Detection using PZT Transducers under the Influence of Uncertain Environmental Factors

Abstract

This paper presents technique for qualitative assessment of fatigue crack growth monitoring, utilizing guided elastic waves generated by the sparse PZT piezoelectric transducers network in the pitch – catch configuration. Two Damage Indices (DIs) correlated with the total energy received by a given sensor are used to detect fatigue cracks and monitor their growth. The indices proposed carry marginal signal information content in order to decrease their sensitivity with respect to other undesired non-controllable factors which may distort the received signal. The reason for that is to limit the false calls ratio which besides the damage detection capability of a system, plays a crucial role in applications. However, even such simplified damage indices can alter over a long term, leading to the misclassification problem. Considering a single sensing path, it is very difficult to distinguish whether the resultant change of DIs is caused by a damage or due to decoherence of these DIs. Therefore, assessment approaches based on threshold levels fixed separately for DIs obtained on each of the sensing paths, would eventually lead to a false call. An alternative approach is to compare changes of DIs for all sensing paths. Developing damage distorts the signal only for the sensing paths in its proximity. In order to decrease the misclassification risk, a method of compensating such DIs drift is proposed. The main features and damage detection capabilities of this method will be demonstrated by conducting a laboratory fatigue test of an aircraft panel. The proposed approach has been verified on a real structure during fatigue test of a helicopter tail boom.

Open access
Training Transfer: a Moderator of Entrepreneurial Performance Determinants

Journal of Industrial Engineering, 2 (2), 52–62. https://doi.org/10.3923/ajie.2010.52.62 Erofeev, D. (2002). Personal, Organisational, and Environmental Factors as Predictors of Entrepreneurial Success within a Franchising Company in the Personnel Service Industry . PhD thesis, Department of Psychology, Central Michigan University. United States, Michigan. Hair, J., Black, W., Babin, B., & Anderson, R. (2010). Multivariate Data Analysis (7th Ed.). Pearson Prentice Hall. Hisrich, R.D., Peters, M.P., & Shepherd, D.A. (2008). Entrepreneurship (9 th

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The Eye - a Neglected Organ in Environmental and Occupational Medicine: An Overview of Known Environmental and Occupational Non-Traumatic Effects on the Eyes

pollution and climatic conditions on the frequency of ophthalmological emergency examinations. Br J Ophthalmol 2003;87:809--11. Wolkoff P, Skov P, Franck C, Petersen LN. Eye irritation and environmental factors in the office environment-hypotheses, causes and a physiological model. Scand J Work Environ Health 2003;29:411--30. Schneider T, Bohgard M. Airborne particle deposition onto the ocular surface. Indoor Air 2005;15:215--19. Brasche S, Bullinger M, Petrovitch A, Mayer E, Gebhardt H

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Genetic and environmental factors in the etiology of schizophrenia - towards mainstreaming

Mutations in Schizophrenia to a Fetal Prefrontal Cortical Network, 2013. 15. 15.Schmitt A., Malchow B., Hasan A., Fallkai P. The impact of environmental factors in severe psychiatric disorders, 2014. 16. Hauser J. Interakcja czynników genetycznych i środowiskowych w schizofrenii, 2007. 17. AbdelMalik P., Husted J., Chow E.W.C., Bassett A.S. Childhood Head Injury and Expression of Schizophrenia in Multiply Affected Families, 2003. 18. Renard J., Rosen L.G., Loureiro M., De Oliveira C., Schmid S., Rushlow W.J. et al: Adolescent Cannabinoid Exposure

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Diversity of Earthworms in Nnamdi Azikiwe University, Awka

Abstract

Studies reveal that not up to 50% of earthworm species have been described in the world and the understanding of earthworm diversity is finite in most countries including Nigeria. The study was aimed at evaluating the diversity of earthworms and environmental factors affecting their abundance. Earthworms were collected from three (3) different sampling locations in Nnamdi Azikiwe University, Awka. Descriptive statistics and estimation of species abundance, dominance and diversity were used to analyze the data obtained from the study. From the study, four (4) species of earthworms were identified and recorded from the three sampling locations. Eudrilus eugeniae (54.9%) was the most abundant species followed by Hyperidrilus africanus (20.3%), Libyodrilus violaceous (19.6%) and Alma millsoni (6.3%) with the least abundant species. The result of the diversity indices showed Science village (1.13) as the most diverse habitat followed by Emelda hostel (0.86) and Boys’ hostel (0.84) with the least diversity of species. Soil pH ranged from 2.25 to 4.06 and total organic matter ranged from 14.10 to 16.36%. Soil temperature was uniform with an average value of 27°C for the three sampling locations. The soil moisture content ranged from 11.19 to 14.12%. The conductivity recorded the lowest value (25.60μS/cm) in Emelda Hostel and highest value (111.8 μS/cm) in Science village. The study provided understanding into the patterns of earthworm populations in Nnamdi Azikiwe University, Awka and the need for the conservation of earthworm diversity. Better understanding about habitat and living conditions of earthworms is required to provide suitable and enhanced production of vermicompost in different geographic conditions.

Open access