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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Biologie a regulace svízele přítuly / Biology and control of catchweed

VONDRUŠKA, Jakub January 2010 (has links)
A very limited range of crops provides the human nutrition. In some time there was selected a little amount of weedy species that plays an important role with respect to quantum and danger. Galium aparine belongs to these species. Therefore an herbicide experiment was carried out with Triticum aestivum catering for a chemical regulation of this weed. In particular 26 varieties of a half of a hectare there was used 21 herbicide preparations and their combinations altogether in demanding conditions of low preparation of soil. It was realised at a land with a large amount of Galium aparine. Most of the preparations had a very good effect regarding the actual control. At some of them Galium aparine nevertheless outgrew and produced seeds. Although these seeds were produced in a little amount, they supply the reserve in a soil. In the literary recherche are described biology, harmfulness and potential methods of regulation of Galium aparine.
2

Environmental health and primary health care: towards a new workforce model

Hanna, Elizabeth Gayle (Liz), lizhanna@netc.net.au January 2005 (has links)
Public health was once synonymous with environmental health. However, as living conditions improved the two fields diverged. Environmental factors are again re-emerging as hazards human health. Increasing global reliance on agricultural and veterinary chemicals (AgVets) over recent decades has is now a serious public health concern. Evidence of their toxicity has prompted international efforts to minimize, monitor and manage exposure risks. Direct involvement of the primary health care workforce is seen as critical to this process, yet little data exists on the health burden on Australian rural communities imposed by these chemicals. The study presented here attempts to explore the impact of these chemicals on two rural communities in Victoria, and ascertain the how the existing primary heath care system responds to AgVet exposure issues. Health determinants are complex, and inter-related, and the client �provider interface is not an entity acting in isolation from other frameworks. The provider-client service relationship has evolved against a background of legislation and provider training. Many external factors also impinge, such as the structure and focus of the health sector, and Australia�s systematic approach to environmental and chemical management. Examination of this underlying infrastructure in Australia provided the background against which the issue of exposure to agricultural and veterinary chemicals was explored. A brief summary of international developments in this area served to provide insight as to what interventions may be introduced to address the issue of chemical exposure. A CATI (Computer Assisted Telephone Interview) survey of 1050 households sought the perspectives from two Victorian agricultural communities to gather self-reported AgVet exposure patterns and health data, and whether respondents perceived their health problems were linked to exposure. Respondents were also asked to comment on the primary health care service experiences from local providers, and which services they preferred to seek for health advice. Perspectives were then sought from all primary health care providers servicing these communities. Information was sought on their level of expertise in diagnosing, and managing exposure related illness, via face-to-face interviews, focus groups and paper surveys. The study revealed rural communities have a long history of hazardous exposure to toxic AgVets. Awareness of toxicity risks is growing, yet further scope exists to improve safe handling of chemicals. High levels of illnesses known be associated with AgVet exposure exist among rural populations. Many believe their own ill-health is linked to exposure, and express strong dissatisfaction with the apparent lack of environmental health expertise especially among their GPs. Health providers demonstrated limited understanding of the health impacts of AgVet exposure. The lack of environmental health expertise among the existing primary health care workforce means that health conditions associated with exposure to AgVets are not being identified, and the absence of health intelligence hampers health planning. In Australia, the health, environment and primary industries sectors function in effect, as distinct silos, with little cross-fertilisation. The United States has combined its agricultural chemical legislative authority to develop a focus on human health, establish direct links, and biomonitoring programs to protect human heath. The U.S. has also developed environmental health expertise at the primary health care level to address community needs as they arise. Strategies are required in Australia to connect the environment, chemical management and health portfolios, with respect to the emerging environmental issues of chemical exposure. There is a need also in Australia to inject environmental health capacity into the primary health care practice.
3

Implementeringen av REACH : Fallstudie på ett SME-företag

Pettersson, Linnea January 2008 (has links)
<p>The importance of chemical use is enormous for areas such as agriculture, industry and medicine and hence a prerequisite for our modern society. In order to protect humans and the environment from the negative effects of chemical use, chemical regulations have been used at a relatively early stage in our history. The purpose of REACH, the new chemical regulation of the European Union, is to generate new knowledge of chemicals within the European market and to increase the responsibilities of the enterprises when it comes to risk management. Whether the enterprises will implement the regulations or not will be of vital importance for the realization of the law’s intentions.</p><p>The purpose of this study was to identify possibilities and problems that can occur when a downstream-user SME is about to implement REACH. Case study is the method by which this study has been carried out. Further, the study includes 20 smaller interviews with focus on smaller enterprises to address the generalization of the case study and to investigate the knowledge about REACH within this group of enterprises. The results from the case study showed three aspects that were important for this enterprise in the implementation process; the chosen enterprise had an active trade organization, the enterprise was a formulator and the size of the enterprise. The results from the telephone interviews showed that 12 of 20 enterprises were not aware of the new legislation but that there are differences between the subgroups of downstream-users. All of the interviewed formulators were aware of the legislation and had also started to work active towards implementing it, within the group of professional users only one of the enterprises were aware of the legislation. Further the telephone interviews did not show any clearly connection between the size of the enterprises and the level of knowledge about the new regulation, something that has been shown in earlier studies. Hence, there is a risk that the lack of knowledge will have a negative impact on the overall goal of REACH; to contribute to a sustainable development. From the results of this study it is motivated with directed information within this group of enterprises to overcome the lack of knowledge and to increase the chance that REACH will be a valuable contribution to a sustainable development within the chemical sector.</p>
4

Environmental health and primary health care: towards a new workforce model

Hanna, Elizabeth Gayle (Liz), lizhanna@netc.net.au January 2005 (has links)
Public health was once synonymous with environmental health. However, as living conditions improved the two fields diverged. Environmental factors are again re-emerging as hazards human health. Increasing global reliance on agricultural and veterinary chemicals (AgVets) over recent decades has is now a serious public health concern. Evidence of their toxicity has prompted international efforts to minimize, monitor and manage exposure risks. Direct involvement of the primary health care workforce is seen as critical to this process, yet little data exists on the health burden on Australian rural communities imposed by these chemicals. The study presented here attempts to explore the impact of these chemicals on two rural communities in Victoria, and ascertain the how the existing primary heath care system responds to AgVet exposure issues. Health determinants are complex, and inter-related, and the client �provider interface is not an entity acting in isolation from other frameworks. The provider-client service relationship has evolved against a background of legislation and provider training. Many external factors also impinge, such as the structure and focus of the health sector, and Australia�s systematic approach to environmental and chemical management. Examination of this underlying infrastructure in Australia provided the background against which the issue of exposure to agricultural and veterinary chemicals was explored. A brief summary of international developments in this area served to provide insight as to what interventions may be introduced to address the issue of chemical exposure. A CATI (Computer Assisted Telephone Interview) survey of 1050 households sought the perspectives from two Victorian agricultural communities to gather self-reported AgVet exposure patterns and health data, and whether respondents perceived their health problems were linked to exposure. Respondents were also asked to comment on the primary health care service experiences from local providers, and which services they preferred to seek for health advice. Perspectives were then sought from all primary health care providers servicing these communities. Information was sought on their level of expertise in diagnosing, and managing exposure related illness, via face-to-face interviews, focus groups and paper surveys. The study revealed rural communities have a long history of hazardous exposure to toxic AgVets. Awareness of toxicity risks is growing, yet further scope exists to improve safe handling of chemicals. High levels of illnesses known be associated with AgVet exposure exist among rural populations. Many believe their own ill-health is linked to exposure, and express strong dissatisfaction with the apparent lack of environmental health expertise especially among their GPs. Health providers demonstrated limited understanding of the health impacts of AgVet exposure. The lack of environmental health expertise among the existing primary health care workforce means that health conditions associated with exposure to AgVets are not being identified, and the absence of health intelligence hampers health planning. In Australia, the health, environment and primary industries sectors function in effect, as distinct silos, with little cross-fertilisation. The United States has combined its agricultural chemical legislative authority to develop a focus on human health, establish direct links, and biomonitoring programs to protect human heath. The U.S. has also developed environmental health expertise at the primary health care level to address community needs as they arise. Strategies are required in Australia to connect the environment, chemical management and health portfolios, with respect to the emerging environmental issues of chemical exposure. There is a need also in Australia to inject environmental health capacity into the primary health care practice.
5

Implementeringen av REACH : Fallstudie på ett SME-företag

Pettersson, Linnea January 2008 (has links)
The importance of chemical use is enormous for areas such as agriculture, industry and medicine and hence a prerequisite for our modern society. In order to protect humans and the environment from the negative effects of chemical use, chemical regulations have been used at a relatively early stage in our history. The purpose of REACH, the new chemical regulation of the European Union, is to generate new knowledge of chemicals within the European market and to increase the responsibilities of the enterprises when it comes to risk management. Whether the enterprises will implement the regulations or not will be of vital importance for the realization of the law’s intentions. The purpose of this study was to identify possibilities and problems that can occur when a downstream-user SME is about to implement REACH. Case study is the method by which this study has been carried out. Further, the study includes 20 smaller interviews with focus on smaller enterprises to address the generalization of the case study and to investigate the knowledge about REACH within this group of enterprises. The results from the case study showed three aspects that were important for this enterprise in the implementation process; the chosen enterprise had an active trade organization, the enterprise was a formulator and the size of the enterprise. The results from the telephone interviews showed that 12 of 20 enterprises were not aware of the new legislation but that there are differences between the subgroups of downstream-users. All of the interviewed formulators were aware of the legislation and had also started to work active towards implementing it, within the group of professional users only one of the enterprises were aware of the legislation. Further the telephone interviews did not show any clearly connection between the size of the enterprises and the level of knowledge about the new regulation, something that has been shown in earlier studies. Hence, there is a risk that the lack of knowledge will have a negative impact on the overall goal of REACH; to contribute to a sustainable development. From the results of this study it is motivated with directed information within this group of enterprises to overcome the lack of knowledge and to increase the chance that REACH will be a valuable contribution to a sustainable development within the chemical sector.
6

Metody regulace pýru plazivého \kur{Elytrigia repens} (L.) Desv. na orné půdě / The methods of regulation the Elytrigia repens (L.) Desv. on arable land

KOCEK, Václav January 2012 (has links)
Weed infestation of the arable land by persistent weeds is serious problem today. Very dangerous species occuring in all crops, not just only on the arable land, is "Elytrigia repens". It's spread is connected with decrease the level of tillage and with reduction of agrotechnical measures. The target of my thesis is to broadening of knowledges and to suggest other possible solutions of regulation of the occurrence of "Elytrigia repens". SO we did an herbicidal attempt at "Triticum aestivum", which was focused on chemical regulation of this weed. There were used three herbicidal products in different variants. Using of herbicidal products reduces the occurrence of weed species.
7

"It Doesn't Need to be Industrial Strength": An Analysis of Women's Adoption of a Chemical-Free Lifestyle

Vidug, Kristina 23 December 2011 (has links)
This thesis seeks to uncover women’s concerns about chemicals in the household, and, more specifically, in cleaning products. The research is based on semi-structured interviews with women who are primarily responsible for household cleaning and who consciously avoid conventional cleaning products. From a sociological standpoint, the topic remains unstudied. The women were critical of greenwashing and the institutions responsible for chemical regulation. Further, the women’s chemical-free lifestyle defied conventional definitions of activism. Sociological theories of risk are used to help understand women’s avoidance of chemicals. It was found that tenets of the precautionary principle were reflected in their reasoning for avoiding chemicals. Recent biomonitoring and body burden studies have influenced women’s knowledge of chemical risk and their decision to avoid them. The thesis demonstrates that risk-management, in this context, has become an individualized pursuit reflective of the neo-liberal ideology informing chemical regulation. / Canadian Institutes of Health Research

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