Deborah Hennessy - Academia.edu (original) (raw)
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Papers by Deborah Hennessy
Environmental Sciences Europe, 2012
Background: Genetically engineered, herbicide-resistant and insect-resistant crops have been rema... more Background: Genetically engineered, herbicide-resistant and insect-resistant crops have been remarkable commercial successes in the United States. Few independent studies have calculated their impacts on pesticide use per hectare or overall pesticide use, or taken into account the impact of rapidly spreading glyphosate-resistant weeds. A model was developed to quantify by crop and year the impacts of six major transgenic pest-management traits on pesticide use in the U.S. over the 16-year period, 1996-2011: herbicide-resistant corn, soybeans, and cotton; Bacillus thuringiensis (Bt) corn targeting the European corn borer; Bt corn for corn rootworms; and Bt cotton for Lepidopteron insects. Results: Herbicide-resistant crop technology has led to a 239 million kilogram (527 million pound) increase in herbicide use in the United States between 1996 and 2011, while Bt crops have reduced insecticide applications by 56 million kilograms (123 million pounds). Overall, pesticide use increased by an estimated 183 million kgs (404 million pounds), or about 7%. Conclusions: Contrary to often-repeated claims that today's genetically-engineered crops have, and are reducing pesticide use, the spread of glyphosate-resistant weeds in herbicide-resistant weed management systems has brought about substantial increases in the number and volume of herbicides applied. If new genetically engineered forms of corn and soybeans tolerant of 2,4-D are approved, the volume of 2,4-D sprayed could drive herbicide usage upward by another approximate 50%. The magnitude of increases in herbicide use on herbicide-resistant hectares has dwarfed the reduction in insecticide use on Bt crops over the past 16 years, and will continue to do so for the foreseeable future.
The Journal of Neuroscience, 2009
Nervous system functions in all animals rely upon synaptic connectivity that is established durin... more Nervous system functions in all animals rely upon synaptic connectivity that is established during early development. Whereas cell–cell signaling plays a critical role in establishing synapse specificity, the involvement of extrinsic growth factors cannot, however, be undermined. We have previously demonstrated that trophic factors are required for excitatory but not inhibitory synapse formation betweenLymnaeaneurons. Moreover, in the absence of trophic factors, neurons from a number of species establish inappropriate inhibitory synapses, which can, however, be corrected by the addition of trophic factors. The precise site of trophic factor actions (presynaptic versus postsynaptic) and the underlying mechanisms remain, however, undefined. Here, we provide the first direct evidence that the trophic factor-mediated excitatory synapse formation involves activity-induced calcium (Ca2+) oscillations in the postsynaptic left pedal dorsal 1 (LPeD1) but not the presynaptic visceral dorsal 4...
Community Health Care Development, 1997
Human resources for health, 2006
Indonesia's recent economic and political history has left a legacy of widespread poverty and... more Indonesia's recent economic and political history has left a legacy of widespread poverty and serious health problems, and has contributed to marked inequalities in health care. One means of responding to these challenges has been through a reconsideration of the professional roles of nurses, to enable them to deal with the range and complexity of health problems. However, there are currently a number of obstacles to achieving these aims: there is a serious shortfall in trained nurses; the majority of nurses have only limited education and preparation for the role; and there is no central registration of nurses, which means that it is impossible to regulate either the profession or the standards of care. This study aimed to establish the occupational profiles of each grade of nurse, identify their training and development needs and ascertain whether any differences existed between nurses working in different regions or within hospital or community settings. An established and ps...
Human resources for health, 2006
There is a shortfall in midwives in Indonesia (an estimated 26 per 100,000 people), which means t... more There is a shortfall in midwives in Indonesia (an estimated 26 per 100,000 people), which means that the quality of antenatal, perinatal and postnatal care varies widely. One consequence of this is the high rate of maternal and perinatal mortality, which has prompted a number of health initiatives. The current study was part of a review of the existing complex system of midwifery training and the development of a coherent programme of continuing professional development, tighter accreditation regulations and clearer professional roles. Its aims were to identify the occupational profiles and development needs of the participating midwives, and to establish whether any differences existed between grades, geographical location and hospital/community midwives. A psychometrically valid training-needs instrument was administered to 332 midwives from three provinces, covering both hospital and community staff and a range of midwifery grades. The instrument had the capacity to identify occu...
Human resources for health, 2006
Despite recent developments, health care provision in Indonesia remains suboptimal. Difficult ter... more Despite recent developments, health care provision in Indonesia remains suboptimal. Difficult terrain, economic crises, endemic diseases and high population numbers, coupled with limited availability of qualified health care professionals, all contribute to poor health status. In a country with a population of 220 million, there are currently an estimated 50 nurses and 26 midwives per 100,000 people. In line with government initiatives, this series of studies was undertaken to establish the training and development needs of nurses and midwives working within a variety of contexts in Indonesia, with the ultimate aim of enhancing care provision within these domains. An established, psychometrically valid and reliable training needs instrument was modified for use within the Indonesian context. While this technique has had widespread international use in the developed world, its application for developing countries has not yet been established. The standard form consists of a biographi...
Health services management research : an official journal of the Association of University Programs in Health Administration / HSMC, AUPHA, 1996
The growing demand for professional updating and training within the health service has created a... more The growing demand for professional updating and training within the health service has created a proliferation of post-registration courses, many of which fail to reach the appropriate personnel or the real training objectives of the participants and their managers. One reason behind this problem relates to the fact that many such courses are constructed and delivered in a haphazard way, without systematic reference to the direct and indirect consumers of the educational programmes. A more rational approach to post-experience provision of this sort might involve the methodical collection of information regarding the training needs of target health professional populations. Such a data base would afford a global overview of competencies and deficiencies, both within and between individuals. From this the content, level and focus of training could be customized to meet the reported needs, thereby streamlining the commissioning process to enhance efficiency and effectiveness. Previous...
Nursing times, Jan 31, 1980
International journal of nursing studies, 1991
Two questions of importance to those concerned with maintaining standards and increasing the effi... more Two questions of importance to those concerned with maintaining standards and increasing the efficiency of Community Nursing are: (1) does reducing hospital provision alter the number of patients referred for Community Nursing or the type of care provided; (2) are Community Nursing Services directed towards those who most require them? A base-line study was carried out in the first quarter of 1988, before the closure of one of two general hospitals in an inner London Health Authority and was replicated in the same quarter of 1989, after all acute inpatient services had been transferred to the other hospital. Comparison of patients discharged before and after closure showed no significant differences in patients' age, sex, proportion living alone, length of stay in hospital, readmissions or deaths within one month of discharge. There was some decline in general nursing care. Total discharges declined by 20% while the number of referrals remained the same, indicating that proporti...
SA nursing journal. SA verplegingstydskrif, 1976
Environmental Sciences Europe, 2012
Background: Genetically engineered, herbicide-resistant and insect-resistant crops have been rema... more Background: Genetically engineered, herbicide-resistant and insect-resistant crops have been remarkable commercial successes in the United States. Few independent studies have calculated their impacts on pesticide use per hectare or overall pesticide use, or taken into account the impact of rapidly spreading glyphosate-resistant weeds. A model was developed to quantify by crop and year the impacts of six major transgenic pest-management traits on pesticide use in the U.S. over the 16-year period, 1996-2011: herbicide-resistant corn, soybeans, and cotton; Bacillus thuringiensis (Bt) corn targeting the European corn borer; Bt corn for corn rootworms; and Bt cotton for Lepidopteron insects. Results: Herbicide-resistant crop technology has led to a 239 million kilogram (527 million pound) increase in herbicide use in the United States between 1996 and 2011, while Bt crops have reduced insecticide applications by 56 million kilograms (123 million pounds). Overall, pesticide use increased by an estimated 183 million kgs (404 million pounds), or about 7%. Conclusions: Contrary to often-repeated claims that today's genetically-engineered crops have, and are reducing pesticide use, the spread of glyphosate-resistant weeds in herbicide-resistant weed management systems has brought about substantial increases in the number and volume of herbicides applied. If new genetically engineered forms of corn and soybeans tolerant of 2,4-D are approved, the volume of 2,4-D sprayed could drive herbicide usage upward by another approximate 50%. The magnitude of increases in herbicide use on herbicide-resistant hectares has dwarfed the reduction in insecticide use on Bt crops over the past 16 years, and will continue to do so for the foreseeable future.
The Journal of Neuroscience, 2009
Nervous system functions in all animals rely upon synaptic connectivity that is established durin... more Nervous system functions in all animals rely upon synaptic connectivity that is established during early development. Whereas cell–cell signaling plays a critical role in establishing synapse specificity, the involvement of extrinsic growth factors cannot, however, be undermined. We have previously demonstrated that trophic factors are required for excitatory but not inhibitory synapse formation betweenLymnaeaneurons. Moreover, in the absence of trophic factors, neurons from a number of species establish inappropriate inhibitory synapses, which can, however, be corrected by the addition of trophic factors. The precise site of trophic factor actions (presynaptic versus postsynaptic) and the underlying mechanisms remain, however, undefined. Here, we provide the first direct evidence that the trophic factor-mediated excitatory synapse formation involves activity-induced calcium (Ca2+) oscillations in the postsynaptic left pedal dorsal 1 (LPeD1) but not the presynaptic visceral dorsal 4...
Community Health Care Development, 1997
Human resources for health, 2006
Indonesia's recent economic and political history has left a legacy of widespread poverty and... more Indonesia's recent economic and political history has left a legacy of widespread poverty and serious health problems, and has contributed to marked inequalities in health care. One means of responding to these challenges has been through a reconsideration of the professional roles of nurses, to enable them to deal with the range and complexity of health problems. However, there are currently a number of obstacles to achieving these aims: there is a serious shortfall in trained nurses; the majority of nurses have only limited education and preparation for the role; and there is no central registration of nurses, which means that it is impossible to regulate either the profession or the standards of care. This study aimed to establish the occupational profiles of each grade of nurse, identify their training and development needs and ascertain whether any differences existed between nurses working in different regions or within hospital or community settings. An established and ps...
Human resources for health, 2006
There is a shortfall in midwives in Indonesia (an estimated 26 per 100,000 people), which means t... more There is a shortfall in midwives in Indonesia (an estimated 26 per 100,000 people), which means that the quality of antenatal, perinatal and postnatal care varies widely. One consequence of this is the high rate of maternal and perinatal mortality, which has prompted a number of health initiatives. The current study was part of a review of the existing complex system of midwifery training and the development of a coherent programme of continuing professional development, tighter accreditation regulations and clearer professional roles. Its aims were to identify the occupational profiles and development needs of the participating midwives, and to establish whether any differences existed between grades, geographical location and hospital/community midwives. A psychometrically valid training-needs instrument was administered to 332 midwives from three provinces, covering both hospital and community staff and a range of midwifery grades. The instrument had the capacity to identify occu...
Human resources for health, 2006
Despite recent developments, health care provision in Indonesia remains suboptimal. Difficult ter... more Despite recent developments, health care provision in Indonesia remains suboptimal. Difficult terrain, economic crises, endemic diseases and high population numbers, coupled with limited availability of qualified health care professionals, all contribute to poor health status. In a country with a population of 220 million, there are currently an estimated 50 nurses and 26 midwives per 100,000 people. In line with government initiatives, this series of studies was undertaken to establish the training and development needs of nurses and midwives working within a variety of contexts in Indonesia, with the ultimate aim of enhancing care provision within these domains. An established, psychometrically valid and reliable training needs instrument was modified for use within the Indonesian context. While this technique has had widespread international use in the developed world, its application for developing countries has not yet been established. The standard form consists of a biographi...
Health services management research : an official journal of the Association of University Programs in Health Administration / HSMC, AUPHA, 1996
The growing demand for professional updating and training within the health service has created a... more The growing demand for professional updating and training within the health service has created a proliferation of post-registration courses, many of which fail to reach the appropriate personnel or the real training objectives of the participants and their managers. One reason behind this problem relates to the fact that many such courses are constructed and delivered in a haphazard way, without systematic reference to the direct and indirect consumers of the educational programmes. A more rational approach to post-experience provision of this sort might involve the methodical collection of information regarding the training needs of target health professional populations. Such a data base would afford a global overview of competencies and deficiencies, both within and between individuals. From this the content, level and focus of training could be customized to meet the reported needs, thereby streamlining the commissioning process to enhance efficiency and effectiveness. Previous...
Nursing times, Jan 31, 1980
International journal of nursing studies, 1991
Two questions of importance to those concerned with maintaining standards and increasing the effi... more Two questions of importance to those concerned with maintaining standards and increasing the efficiency of Community Nursing are: (1) does reducing hospital provision alter the number of patients referred for Community Nursing or the type of care provided; (2) are Community Nursing Services directed towards those who most require them? A base-line study was carried out in the first quarter of 1988, before the closure of one of two general hospitals in an inner London Health Authority and was replicated in the same quarter of 1989, after all acute inpatient services had been transferred to the other hospital. Comparison of patients discharged before and after closure showed no significant differences in patients' age, sex, proportion living alone, length of stay in hospital, readmissions or deaths within one month of discharge. There was some decline in general nursing care. Total discharges declined by 20% while the number of referrals remained the same, indicating that proporti...
SA nursing journal. SA verplegingstydskrif, 1976