scholarly journals Influence of Ecological Factors on Population Morbidity Indicators

10.12737/8227 ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 18-29
Author(s):  
Рисник ◽  
D. Risnik ◽  
Барабаш ◽  
A. Barabash ◽  
Левич ◽  
...  
Keyword(s):  
Ecological Factors ◽  
Range Limits ◽  
Environmental Standards ◽  
Normal Range ◽  
Environment Quality ◽  
Deep Well ◽  
Drinking Waters ◽  
Chemical Factors ◽  
Physical And Chemical

On the Tambov region example a research related to deep-well drinking waters’ composition influence on able-bodied population morbidity in 16 classes of diseases on the international classification has been performed. Correlation analysis, contingency tables analysis, local environmental standards calculation method (LES method) have been used for this purpose. Environment quality control in-situ-technology bases have been presented. Normal range limits of deep-well waters’ physical and chemical factors, as well as of morbidity in different classes of diseases have been calculated by means of the LES method.

Demography and Morbidity in Russian Regions as Indicators of Territories’ Ecological Trouble

10.12737/213 ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 53-63
Author(s):  
Барабаш ◽  
A. Barabash ◽  
Левич ◽  
A. Levich ◽  
Булгаков ◽  
...  
Keyword(s):  
Quality Control ◽  
Data Analysis ◽  
Quality Assessment ◽  
Ecological Factors ◽  
Russian Regions ◽  
Environmental Standards ◽  
Ecological Data ◽  
Technology Application ◽  
Environment Quality ◽  
Establishment Method

Problems of environment quality assessment and methodical questions of ecological data analysis are considered in this article. The assessment and analysis of use of Insitu-technology of environment quality control are given. The establishment method of local environmental standards is considered. Recommendations on Insitu-technology application are offered according to results of work. Demography and morbidity indicators in Russian regions and standards of ecological factors are considered.

scholarly journals A Quantitative Study of the Fauna of the Sandy Beach at Port Erin

1932 ◽  
Vol 18 (1) ◽  
pp. 279-296 ◽  
Author(s):  
Marjorie E. Pirrie ◽  
J. R. Bruce ◽  
H. B. Moore
Keyword(s):  
Quantitative Study ◽  
Dominant Species ◽  
Sandy Beach ◽  
Interstitial Water ◽  
Tidal Level ◽  
Isle Of Man ◽  
Chemical Factors ◽  
Physical And Chemical ◽  
Made In

A survey of the sandy beach at Port Erin, Isle of Man, was made in. September, 1931. Observations were made, at a number of stations, involving simultaneous records of the macro-fauna and its density, and certain physical and chemical factors of the sand and interstitial water, as well as tidal level on the beach. The results enable certain general conclusions to be drawn as to the causes of the observed distribution of species, and of the differences between the faunas of this and some Scottish beaches. Plans are given, indicating tidal contours, salinity, and grade composition, in situ on the beach, together with frequency diagrams for five dominant species.

scholarly journals The Evaluation of a Risk Degree for the Process of a Brown Coal Spontaneous Ignition on Dumps with Using of Modern Numeric Methods

2018 ◽  
Vol 26 (2) ◽  
pp. 71-75
Author(s):  
Petr Klouda ◽  
Vlastimil Moni ◽  
Michal Řehoř ◽  
Jan Blata ◽  
František Helebrant
Keyword(s):  
Brown Coal ◽  
Barometric Pressure ◽  
Spontaneous Ignition ◽  
Atmospheric Conditions ◽  
Database Analysis ◽  
Chemical Factors ◽  
Risk Degree ◽  
Physical And Chemical

Abstract The article is a summary of information about evaluation of a risk degree for a brown coal spontaneous ignition which is realized on the base of a database analysis of information about the development of stative quantities and desorbated gases in the stored bodies of the brown coal. The data were gained from the long term complex measurements which were realized at chosen companies during the coal mining in the previous parts of the project. In the last part of the project, we examined results of temperature models from thermographs with results of gasses and coal samples from the mines. Then, the influence of atmospheric conditions (insolation, water downfall, changes of barometric pressure etc.), the influence of coal mass degradation, the influence of physical and chemical factors, and the influence of other defective factors on the process of the coal spontaneous ignition. The gasmetry was assess with gas in-situ samples and laboratory gas models of indicative gasses for the spontaneous ignition, which were taken from the method of the thermic oxidation with the aim of the correlation finding for an epicentre of temperature within the spontaneous ignition.

Adhesion of Elastomers, with Special Reference to Triblock Copolymers

1978 ◽  
Vol 51 (2) ◽  
pp. 354-364 ◽  
Author(s):  
A. N. Gent ◽  
G. R. Hamed
Keyword(s):  
Triblock Copolymers ◽  
Thermoplastic Elastomers ◽  
Random Copolymers ◽  
Plastic Yielding ◽  
Dissipation Process ◽  
Substrate Adhesion ◽  
Chemical Factors ◽  
Physical And Chemical ◽  
Strength Of Adhesion

Abstract Several physical and chemical factors affect the strength of adhesion (as measured by a peeling method) for elastomers adhering to rigid substrates. These factors include: the thickness of the elastomer layer (and of an adhering backing, if present); the rate of detachment and the test temperature; and the presence of chemical bonds between elastomer and the substrate. Adhesion of thermoplastic elastomers, i.e., SBS triblock copolymers, applied as hot melts, is much stronger than for the corresponding random copolymers, crosslinked in situ. These materials also show higher cohesive (tear) strength. Both effects probably arise from the same cause: an energy-dissipation process which operates at large stresses and prevents brittle fracture. This process is thought to be plastic yielding of the polystyrene domains.

scholarly journals STUDI FAKTOR FISIKA KIMIA PERAIRAN TERHADAP BIOTA AKUATIK DI EKOSISTEM SUNGAI BELAWAN

2017 ◽  
Author(s):  
Seminar Nasional Multidisiplin Ilmu 2017 ◽  
Khairul
Keyword(s):  
Laboratory Test ◽  
Aquatic Ecosystems ◽  
Ex Situ ◽  
Aquatic Biota ◽  
Average Flow ◽  
Average Flow Velocity ◽  
Chemical Factors ◽  
Average Water ◽  
Physical And Chemical

The purpose of this research is to know the condition of physical and chemical factors in aquatic biota in aquatic ecosystems against River Belawan. This research uses a method of exploration with the taking of sampling is carried out for 3 months. The taking of sampling is carried out in situ and ex situ (laboratory test). Based on the research results at the 3rd station observations can be known to the average of the highest water temperature at station 1 (29, 5 OC) and lowest in station 3 (27 OC), brightness of the highest average water at station 3 (76 cm) and the lowest in station 2 (72 cm), the average flow velocity is highest at station 1 (9.5 m/s) and the lowest in station 3 (5.3 m/s), the pH of the water the highest average at station 2 (6.8) and the lowest in station 3 (6.8), the highest average salinity at station 1 (15, 7ppt) and the lowest station 3 (5.4 ppt), DO the highest average at stations 1 and 2 (3.5 mg/litre) and lowest in station 3 (3.4 mg/liter), the highest average BOD on station 1 (6.3 mg/litre) and lowest in station 2 (0.5 mg/litre), nitrate average high at station 1 (13.1 mg/litre) and lowest in station 1 (3.9 mg/liter), and the highest average phosphate at station 3 (0.53 mg/litre) and lowest in station 1 (0.3 mg/litre).

scholarly journals Enhanced Tensile Strength of Monolithic Epoxy with Highly Dispersed TiO2-Graphene Nanocomposites

2021 ◽  
Vol 5 (7) ◽  
pp. 191
Author(s):  
Yanshuai Wang ◽  
Siyao Guo ◽  
Biqin Dong ◽  
Feng Xing
Keyword(s):  
Tensile Strength ◽  
Epoxy Resin ◽  
Mechanical Performance ◽  
Chemical Properties ◽  
High Mechanical Property ◽  
Graphene Nanocomposites ◽  
Highly Dispersed ◽  
Dispersion State ◽  
Physical And Chemical

The functionalization of graphene has been reported widely, showing special physical and chemical properties. However, due to the lack of surface functional groups, the poor dispersibility of graphene in solvents strongly limits its engineering applications. This paper develops a novel green “in-situ titania intercalation” method to prepare a highly dispersed graphene, which is enabled by the generation of the titania precursor between the layer of graphene at room temperature to yield titania-graphene nanocomposites (TiO2-RGO). The precursor of titania will produce amounts of nano titania between the graphene interlayers, which can effectively resist the interfacial van der Waals force of the interlamination in graphene for improved dispersion state. Such highly dispersed TiO2-RGO nanocomposites were used to modify epoxy resin. Surprisingly, significant enhancement of the mechanical performance of epoxy resin was observed when incorporating the titania-graphene nanocomposites, especially the improvements in tensile strength and elongation at break, with 75.54% and 176.61% increases at optimal usage compared to the pure epoxy, respectively. The approach presented herein is easy and economical for industry production, which can be potentially applied to the research of high mechanical property graphene/epoxy composite system.

Further Studies upon Chemical Factors Affecting the Breeding of Anopheles in Trinidad

1934 ◽  
Vol 25 (4) ◽  
pp. 491-494 ◽  
Author(s):  
P. A. Buxton
Keyword(s):  
Analytical Study ◽  
Chemical Constituents ◽  
Physical Factors ◽  
Factors Affecting ◽  
Early Stages ◽  
Freshwater Biology ◽  
Chemical Technique ◽  
Chemical Factors ◽  
Physical And Chemical

During the last decade, entomologists have made progress in understanding the environment in which certain insects live; in particular, we begin to understand the effect of certain physical and chemical factors, which make up a part of the environment. With this gain in knowledge, it is sometimes possible to forecast outbreaks of insects and of diseases conveyed by them, and one can sometimes say that a particular alteration of the environment will result in loss or gain. But so far as mosquitos are concerned, one must admit that though much work has been devoted to the analytical study of the water in which the early stages are passed, the results are disappointing. A consideration of the published work suggests several reasons for this. Investigation into the ecology of the mosquito has had a vogue, and much of it has been done by workers who were isolated and whose knowledge of chemical technique and freshwater biology was limited. Apart from that, the inherent difficulties are great, for the worker must hunt for the limiting chemical and physical factors among a host of others which are doubtless unimportant, and there are few clues to indicate which of the chemical constituents of the water affects the mosquito. The data are therefore voluminous and it is difficult to reduce them to order and present them so that they can be readily understood.

Menadione nicotinamide bisulphite as a source of vitamin K and niacin activities for the growing pig

2000 ◽  
Vol 71 (1) ◽  
pp. 111-117 ◽  
Author(s):  
M. Marchetti ◽  
M. Tassinari ◽  
S. Marchetti
Keyword(s):  
Vitamin K ◽  
Control Diet ◽  
Live Weight ◽  
Organic Salt ◽  
Free Form ◽  
Food Supplementation ◽  
Sodium Bisulphite ◽  
Chemical Factors ◽  
And Control ◽  
Physical And Chemical

AbstractWhen compared with other menadione derivatives such as menadione sodium bisulphite (MSB), menadione nicotinamide bisulphite (MNB), an organic salt combining menadione and nicotinamide, shows better stability towards physical and chemical factors once it is added to pre-mixes or foods. The present work evaluates the bioavailability of the two vitamins present in this compound and toxicity in the pig. To assess vitamin bioavailability, pigs were given small amounts of food containing MNB or equivalent amounts of MSB and nicotinamide in the free form. Menadione and nicotinamide concentrations in blood samples drawn at set times after the diets were given did not reveal any significant differences between the two modes of administration. Haematic levels of both vitamins in animals receiving MNB, or MSB and nicotinamide, were after 2, 4, 8 and 12 h higher (P < 0·001) than those of untreated animals. The tolerance level to MNB was evaluated in pigs given diets containing graded amounts of MNB (100, 500, 2500 mg/kg) for 28 days. No significant (P > 0·05) differences were recorded in live weight, food intake and gain/food ratio in pigs given these diets when compared with those given an unsupplemented diet. Haemoglobin and bilirubin levels did not differ between animals given various amounts of MNB and control animals. Plasma aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities in pigs given 100 mg/kg of MNB did not show significant differences when compared with those observed in pigs given an unsupplemented control diet. In pigs on the diets supplemented with 500 and 2500 mg/kg of MNB there was a significant increase in the two enzymatic activities as compared with controls (P < 0·001 and P < 0·01). In the case of ALT this had disappeared by 28 weeks. MNB is a good source of vitamin K for the pig and does not appear to have any adverse effects, even when administered at levels higher than those normally used in pig food supplementation.

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