bluuebunny/crossref_metadata_2025 huggingface dataset:
Nutrition in inflammatory bowel disease
Authors: Banai János
Published: April 2009

Aetiology of inflammatory bowel disease (IBD) is complex and probably multifactorial. Nutrition has been proposed to be an important aetiological factor for development of IBD. Several components of the diet (such as sugar, fat, fibre, fruit and vegetable, protein, fast food, preservatives etc.) were examined as possible causative agents for IBD. According to some researchers infant feeding (breast feeding) may also contribute to the development of IBD. Though the importance of environmental factors is evidenced by the increasing incidence in developed countries and in migrant population in recent decades, the aetiology of IBD remained unclear. There are many theories, but as yet no dietary approaches have been proved to reduce the risk of developing IBD. The role of nutrition in the management of IBD is better understood. The prevention and correction of malnutrition, the provision of macro- and micronutrients and vitamins and the promotion of optimal growth and development of children are key points of nutritional therapy. In active disease, the effective support of energy and nutrients is a very important part of the therapy. Natural and artificial nutrition or the combination of two can be choosen for supporting therapy of IBD. The author summarises the aetiological and therapeutic role of nutrition in IBD.
Heart rate variability analysis in sports
Authors: Apor Péter , Petrekanich Máté , Számadó Júlianna
Published: April 2009

Differences in the duration of the cycles reflects the balance of the sympathetic and parasympathetic influence on the heart. Variancy in the heart rate correlates to the breathing cycle, to baroreflex sensitivity, to day and night alternations and to changes in the vegetative tone evoked by physical exercises. Analysis of the time and/or frequency power domain of the heart rate variancy is expected to have diagnostic value in physiological and pathological situations as adaptation to training, overtraining, heart disease etc. Both time- and frequency domains reflect the same physiological phenomenon but from different point of view. Vagus tonus is reflected in the high frequency part of the range of variancy, while an increased sympathetic tone enriches the low frequency part of the variations of the duration of the consecutive heart cycles. This technically simple and relatively inexpensive method has inspired a couple of clinical and sports medical studies. Certain tendencies seem to be clear, but for individual diagnosis or for prognosis the data must be treated very carefully.
From the metabolic syndrome to the concept of global cardiometabolic risk
Authors: Nádas Judit , Jermendy György
Published: April 2009

Although the clustering of cardiovascular risk factors is unquestionable, the clinical significance of the metabolic syndrome as a distinct entity has been debated in the past years. Recently, the term ‘metabolic syndrome’ has been replaced by ‘global cardiometabolic risk’ which implies cardiovascular risk factors beyond the metabolic syndrome. The metabolic syndrome can be frequently detected among people in western and developing countries affecting 25-30% of adult population, and its prevalence rate is increasing. Prospective studies show that the metabolic syndrome is a significant predictor of incident diabetes but has a weaker association with cardiovascular morbidity and mortality. At the same time the metabolic syndrome is inferior to established predicting models for either type 2 diabetes or cardiovascular disease.The underlying pathomechanism of the metabolic syndrome is still poorly understood. The role of insulin resistance – although not as a single factor – is still considered as a key component. In the last decade the importance of abdominal obesity has received increased attention but some studies, mainly in the Asian population, showed that central obesity is not an essential component of the syndrome. Regardless of the theoretical debates the practical implications are indisputable. The frequent clustering of hypertension, dyslipidaemia and glucose intolerance, that often accompanies central obesity, can not be ignored. Following the detection of one risk factor, the presence of other, traditional and non-traditional factors should be searched for, as the beneficial effect of intensive, target oriented, continuous treatment of metabolic and cardiovascular risk factors has been proven in both the short and long term.
Li‐Driven Copper Extrusion/Re‐injection in Various Cu‐based Oxides and Sulfides
Authors: Rozier Patrick , Morcrette Mathieu , Szajwaj Olivier , Bodenez Vincent , Dolle Mickael , Surcin Christine , Dupont Loic , Tarascon Jean Marie
Published: April 2009

The present paper is in part a continuation of our recent work dealing with the fully reversible Li‐driven Cu extrusion/injection of Cu in Cu2.33V4O11. The peculiar electrochemical property of such a compound was mainly ascribed to both structural considerations (presence of anchoring oxygen, giving flexibility to the [V4O11] layers) and electronic considerations, such as the existence of a delicate balance between the two Cu+/Cu2+ and V4+/V5+ redox centers. To support such suggestions, numerous compounds were revisited for their electrochemical–structural interplay. Network dimensionality, lattice flexibility, and cationic mobility parameters were addressed by exploring in depth the richness of the Cu–V–O system, while the importance of the donor/acceptor energy levels was checked via the choice of compounds having the right energy match between the two redox centers. As an extensive trial‐and‐error approach was not realistic, we relied on simple considerations based on the ionization energy of the various d‐metals to narrow down metal pairs having redox levels occurring within the same range of energies. Bearing this in mind, it was logical to consider compounds still containing Cu ions but with Nb instead of V or compounds having V and Ag instead of Cu. Regardless of our effort, it turned out that the number of potential candidates worth considering for practical applications is still very limited, in spite of the elegance of this new Li reactivity mechanism.
Red Snapper Larval Transport in the Northern Gulf of Mexico
Authors: Johnson Donald R. , Perry Harriet M. , Lyczkowski‐Shultz Joanne , Hanisko David
Published: April 2009

This study examines the advection of red snapper Lutjanus campechanus larvae in the northern Gulf of Mexico. The potential for repopulating the eastern Gulf stock through larval transport from the more populous western stock is addressed. Transport pathways across topographic features that inhibit alongshelf flow (e.g., the Mississippi River delta, DeSoto Canyon, and the Apalachicola peninsula) and interregional larval transport are considered. An advective field of currents is developed from a large database of drifter and moored currents, augmented by an operational model to fill gaps. The starting points for larval transport are the locations and day of the year of larval captures from the Southeast Area Monitoring and Assessment Program ichthyoplankton surveys. Because the field of currents is derived from near‐surface observations and the depth distribution of larvae is uncertain, findings are expressed in terms of maximal transport pathways. Transport pathways were principally vectored toward the west during September, October, and May under the influence of relatively strong climatological westward wind stress. Eastward pathways occurred in June, July, and August under the influence of weaker shoreward wind stress. Westward transport pathways past the Mississippi delta were found near the delta, whereas eastward transport pathways were found in deeper waters beyond the continental shelf break, away from typical juvenile settlement habitat. Water movement from east to west across the Apalachicola peninsula occurred in the fall, suggesting the potential for genetic exchange from the eastern to the western Gulf. Eastward water movement across the Apalachicola peninsula occurred in July, but only along the outer shelf.
The chicken type III GnRH receptor homologue is predominantly expressed in the pituitary, and exhibits similar ligand selectivity to the type I receptor
Authors: Joseph Nerine T , Morgan Kevin , Sellar Robin , McBride Derek , Millar Robert P , Dunn Ian C
Published: April 2009

Two GnRH isoforms (cGnRH-I and GnRH-II) and two GnRH receptor subtypes (cGnRH-R-I and cGnRH-R-III) occur in chickens. Differential roles for these molecules in regulating gonadotrophin secretion or other functions are unclear. To investigate this we cloned cGnRH-R-III from a broiler chicken and compared its structure, expression and pharmacological properties with cGnRH-R-I. The broiler cGnRH-R-III cDNA was 100% identical to the sequence reported in the red jungle fowl and white leghorn breed. Pituitary cGnRH-R-III mRNA was ∼1400-fold more abundant than cGnRH-R-I mRNA. Northern analysis indicated a single cGnRH-R-III transcript. A pronounced sex and age difference existed, with higher pituitary transcript levels in sexually mature females versus juvenile females. In contrast, higher expression levels occurred in juvenile males versus sexually mature males. Functional studies in COS-7 cells indicated that cGnRH-R-III has a higher binding affinity for GnRH-II than cGnRH-I (Kd: 0.57 vs 19.8 nM) with more potent stimulation of inositol phosphate production (ED50: 0.8 vs 4.38 nM). Similar results were found for cGnRH-R-I, (Kd: 0.51 vs 10.8 nM) and (ED50: 0.7 vs 2.8 nM). The initial rate of internalisation was faster for cGnRH-R-III than cGnRH-R-I (26 vs 15.8%/min). Effects of GnRH antagonists were compared at the two receptors. Antagonist #27 distinguished between cGnRH-R-I and cGnRH-R-III (IC50: 2.3 vs 351 nM). These results suggest that cGnRH-R-III is probably the major mediator of pituitary gonadotroph function, that antagonist #27 may allow delineation of receptor subtype function in vitro and in vivo and that tissue-specific recruitment of cGnRH-R isoforms has occurred during evolution.
Dietary modulation of ghrelin and leptin and gorging behavior after weight loss in the obese Zucker rat
Authors: Beck B , Richy S
Published: April 2009

In this study, we measured ghrelin and leptin in obese Zucker rats after weight loss induced by calorie restriction using either a low-fat (LF) or high-energy palatable (HEPa) diet. After weight loss, the animals were refed lab chow and offered one hour-palatable test meals on the second and fifteenth days of refeeding. Both LF and HEPa rats lost 10% of their initial body weight (P<0.0001). Plasma ghrelin increased with calorie restriction in both groups (P<0.002) with a tendency to a higher increase in the HEPa group while plasma leptin decreased only in the LF group (P<0.01). Both groups ate the same quantity of chow during refeeding and both groups gorged on palatable diet during test meals at a very high constant intensity in HEPa rats. After one week of refeeding, ghrelin levels remained elevated in HEPa rats (+33.2%; P<0.001) while returning to baseline in LF rats. Plasma leptin remained low in LF rats. We conclude that weight loss on a palatable diet is possible if total energy intake is controlled. After stopping restriction, when a palatable diet is available, observed gorging might be dependent on specific ghrelin and leptin changes.
Briefing: Further proposals regarding statutory adjudication in the construction industry
Authors: Dumaresq Delia
Published: April 2009

The draft bill currently before the UK Parliament radically proposes a widening of statutory adjudication in the construction industry to cover all oral and part-oral contracts under its umbrella. However, it addresses few of the major practical issues concerning the practice of adjudication raised during the lengthy industry-wide consultation period. Recently, Lord O’Neill tabled some interesting further amendments specifically targeting some of those concerns – in particular, a proposed uniform statutory scheme and a prohibition on any form of agreement requiring one party to an adjudication to bear the costs irrespective of outcome.
Adjudication: possible amendment to the 1996 act
Authors: Mort J.
Published: April 2009

This paper addresses proposed changes to the UK Housing Grants, Construction and Regeneration Act 1996, as introduced by part 8 of the Local Democracy, Economic Development and Construction Bill. Strengths of the current act are addressed, together with its weaknesses in light of the courts’ subsequent interpretation of the act. The changes proposed by the bill are evaluated in the context of the current act under the following headings: application of the act; adjudication; payment notice/withholding notice regime; suspension of works. The paper also attempts to identify difficulties in the current act that are not addressed by the proposed reforms and potential new difficulties that the reforms bring.
Restructuring public–private partnership in student housing
Authors: Tan W.
Published: April 2009

This paper presents the historical development of public–private partnership models in student housing in higher education institutes. It focuses on the rationale for the changes largely in terms of the circuits of capital, where each round of investment in student housing is accompanied by changing financing structures to respond to the new investment environment. Traditionally, student housing was often considered as part of social housing but increasingly, universities are looking to the private sector to finance, build, operate and transfer these facilities to release limited university funds for priority areas such as research and teaching. The risks for lenders and private sector developers as well as the varied ways in which such housing is financed are considered.
Environmental footprint of pharmaceuticals: The significance of factors beyond direct excretion to sewers
Authors: Daughton Christian G. , Ruhoy Ilene S.
Published: April 2009

The combined excretion of active pharmaceutical ingredients (APIs) via urine and feces is considered the primary route by which APIs from human pharmaceuticals enter the environment. Disposal of unwanted, leftover medications by flushing into sewers has been considered a secondary route—one that does not contribute substantially to overall environmental loadings. The present study presents the first comprehensive examination of secondary routes of API release to the environment and for direct but unintentional human exposure. These include bathing, washing, and laundering, all of which release APIs remaining on the skin from the use of high-content dermal applications or from excretion to the skin via sweating, and disposal of unused and partially used high-content devices. Also discussed are the health hazards associated with: partially used devices, medication disposal practices of consumers, and interpersonal dermal transfer of API residues. Understanding these secondary routes is important from the perspective of pollution prevention, because actions can be designed more easily for reducing the environmental impact of APIs compared with the route of direct excretion (via urine and feces), for reducing the incidence of unintentional and purposeful poisonings of humans and pets, and for improving the quality and cost-effectiveness of health care. Overall, unintentional exposure to APIs for humans via these routes is possibly more important than exposure to trace residues recycled from the environment in drinking water or foods.
Effect of dietary linseed supplements on ù-3 PUFA content and on IGF-1 expression in broiler tissues
Authors: SAPRÕKINA Z. , KARUS A. , KUUSIK S.
Published: April 2009

The aim of this study was to evaluate the effect of ù-3 PUFA-rich linseed-supplemented diet on the ù-6/ù-3 PUFA content and IGF-I mRNA expression in broiler tissues. Broilers (50 of 21 d old and 90 of 42 d old) were divided into groups according to dietary additives: 1.5% linseed oil (LO), 3.0% LO, 15% linseed cake (LC) and 30% LC and to the duration of modified feeding (121, 142 and 2242 days). PUFA content in breast muscles was assayed by gas chromatography and IGF-I mRNA content in liver, muscle and leukocytes was measured by one step RT-PCR. The experimental diets improved the ù-6/ù-3 PUFA ratio through a threefold increase in the ù-3 PUFA content in the breast muscle. The changes in PUFA content were accompanied by changes in IGF-1 gene expression levels in tissues. Therefore, both paracrine and autocrine manner of IGF-1 action are likely to be involved. 15% LC at starting period or 1.5% LO in final diet can be advised as optimal for enriching broiler meat with ù-3 fatty acids.;
Modification in the Expression of MRE11/RAD50/NBS1 Complex in Low dose Irradiated Human Lymphocytes
Authors: Singh Sompal , Bala Madhu , Kumar Raj , Kumar Anil , Dhiman SC
Published: April 2009

Despite the fact that high doses of radiation are detrimental, low dose radiation (LDR) often protects the organism against a subsequent exposure of lethal doses of radiation. Present study was undertaken to understand the role of Mre11, Rad50 and Nbs1 genes in the low dose radio-adapted human peripheral blood mononuclear cells (PBMCs). Optimum time interval between low dose (0.07 Gy) and high dose (5.0 Gy) of 60Co-γ-radiation was observed to be 5.0 hours, at which PBMCs showed maximum LDR induced resistance (RIR). At cytogenetic level, micronuclei frequency was found to be reduced in LDR pre-irradiated PBMCs subsequently exposed to high dose radiation (HDR) as compared to controls. At transcriptional level, with reference to sham-irradiated cells significantly ( p≤0.05) altered expression of Mre11, Rad50 and Nbs1 genes was observed in low dose irradiated cells. At protein level, Mre11, Rad50 and Nbs1 were enhanced significantly ( p≤0.05) in low dose pre-irradiated cells subsequently exposed to high dose of radiation as compared to only high dose irradiated cells. Transcriptional as well as translational modulation in the expression of MRN complex components upon low dose irradiation may confer its participation in repair pathways, resulting in induced resistance.
‘They Don't like Us’: Reflections of Turkish Children in a German Preschool
Authors: Kurban Fikriye , Tobin Joseph
Published: April 2009

In this article, the authors present multiple interpretations of a transcript of a discussion with a group of Turkish-German girls in a kindergarten in Berlin, Germany. These five-year-old girls make statements suggesting they experience alienation from their non-Turkish classmates and teachers, and the wider German society. The authors argue that the meanings of these statements should not be taken at face value. Instead, they employ interpretive strategies borrowed mostly from Mikhail Bakhtin and interpretive frameworks taken from Judith Butler, and post-colonial theory and Critical Race Theory to suggest that the girls' utterances can be usefully seen as having a performative dimension and as expressing tensions around immigration that can be found in the larger society.
Being Accountable for One's Own Governing: A Case Study of Early Educators Responding to Standards-Based Early Childhood Education Reform
Authors: Brown Christopher P.
Published: April 2009

As early childhood education continues to gain prominence on the agendas of policy makers across the globe, members of the field of early childhood education are concerned that these reforms will create new governing discourses that restrict how early educators are defined and limit their work with young children. While these neo-liberal policies tend to alter traditional conceptions of early education and learning, opportunities do arise for early educators to formulate responses to these policies in a way that might expand these neo-liberal conceptions of early education. Through an instrumental case study of standards-based education reform in a large urban early childhood program in the USA, the author examines one such opportunity, in which a collection of pre-kindergarten stakeholders responded to a set of particular policies that emphasize a uniform conception of learning and student performance. This article provides insight into the struggles of early childhood stakeholders as they attempt to address these governing discourses of reform, and it raises questions as to whether proactive responses can destabilize the normalizing power that exists within these policies.
Dialogical Spaces to Reconceptualize Parent Support in the Social Investment State
Authors: Vandenbroeck Michel , Boonaert Tom , Van Der Mespel Sandra , De Brabandere Katelijne
Published: April 2009

The study from which this article derives investigated some dominant assumptions of parent support policies and programmes, and suggests new possibilities for the conceptualization of the relations between parents and such policies, inspired by the possibilities of dialogical spaces and ‘relational citizenship’. Parent support programmes are increasingly conceptualized within a prevention paradigm, underpinning the individualization of social problems in the social investment state. Early childhood is consequently instrumentalized as the place where early socialization needs to be shaped. In this vein, socialization is understood as the adaptation of children as well as their parents to the prevailing societal norms and values. In an action research project involving researchers, practitioners and policy makers in the city of Brussels (Belgium), the authors explored new possibilities in understanding and conceptualizing work with parents of young children. The project consisted of three parts: the creation of a dialogical space where practitioners and policy makers discussed research, policy and practice; a survey of the parenting conditions in Brussels; and the exploration of the possibilities for new initiatives for parents and children, with a focus on social support. The focus in this article is on a report of the second component (the study), however, elements of the first and third components are included to highlight the dialogical dimensions of the project and possible future developments.
Writing Matters! Teaching Writing Development to First-Year Early Years Students
Authors: French Amanda
Published: April 2009

This article reports on a current piece of action research designed to explore how the writing skills of first-year early childhood students can be developed in proactive and innovative ways. It describes how the research/tutor team worked with colleagues to produce and deliver a series of activities which were embedded in first-year core modules on the Early Childhhod Studies degree. The activities were designed to stimulate discussions about writing in higher education and provided students with opportunities to write and receive feedback about their writing throughout the first year of their programme. The research discusses the rationale for such activities and describes the reactions of staff and students to the activities.
‘Learning Together, Shaping Tomorrow’: New Teachers Try New Ways
Authors: Cooper Maxine , Stewart Joan
Published: April 2009

Teacher induction programs provide the critical support that new teachers need as they move from university teacher education studies to the everyday realities of teaching. Newly Qualified Teachers (NQTs) work through a range of new and challenging experiences as they explore their sense of themselves as professionals. Their identities are being constantly constructed and reconstructed as they work through their subjective experience of being a teacher and the objective structures of the wider educational field of the classroom, school and the local community. A high percentage of NQTs leave the teaching profession within the first 5 years of beginning teaching as they grapple with and succumb to the challenges caused by a number of stressors they encounter. New teachers frequently become dissatisfied with the outcomes of their work and decide that they are unsuited to teaching and leave the profession. This article is based on a study of beginning teachers in two Australian states. The focus is on multiple ways to meet the needs of new teachers to establish their professional identity within the context of a community of learners and to value diversity and complexity in the professional community. Key issues addressed included: teacher induction and quality teaching, changing school cultures and the culture of professional learning, teacher learning and responding to changes in the wider community.
Mentors, Not Models: Supporting Teachers to Be Empowered in an Irish Context
Authors: O'Doherty Teresa , Deegan James
Published: April 2009

This article explores the values and perceptions of Irish mentor teachers who have been involved in mentoring novice teachers. While situating this research within the historical context of the teaching profession in the Republic of Ireland, the article chronicles the establishment of the National Pilot Project on Teacher Induction and reports on a survey of the perceived needs of Irish mentors. The article illustrates that respondents gained personally from the mentoring process and recognised its potential to be a transformative agent within Irish schools, creating a framework for professional dialogue and supporting extended learning communities within staffs. The article concludes by examining the potential implications of these findings for policy and practice in new mentoring programmes.
Teacher Induction: Does Scotland's Approach Stand Comparison?
Authors: O'Brien Jim
Published: April 2009

The 2-year probationary experience of new teachers was described by the McCrone Report as scandalous and led to the development of an induction standard (as part of an emerging framework or continuum of standards for various stages of teacher development) with related structures of support for beginner teachers in Scotland provided by schools and Education Authorities. The approach adopted by the Evidence for Policy and Practice Information and Co-ordinating Centre review of the international literature since 1998 on teacher induction offers a lens through which to review developments in Scotland. Hastily implemented but generally regarded to be a success by the General Teaching Council for Scotland and the Scottish government, how do the Scottish developments measure up?
The Induction and Mentoring of New Teachers in Portugal: Contradictions, Needs and Opportunities
Authors: Flores Maria Assunção , Ferreira Fernando Ilídio
Published: April 2009

In this article, policy and research on teacher induction in Portugal are examined. The lack of a formal induction system (despite recognition of its relevance in legal policy documents) and the mismatch between national regulations and practice are also discussed. The authors argue the need for a coherent and sustained induction and support system, drawing on empirical research carried out in Portugal according to two main themes: 1. images of the teaching profession: the balance between conservatism and innovation, and 2. the experience of teaching: implications for mentoring. A number of key issues and questions are identified taking into account the transition period currently underway in the Portuguese context especially as far as teachers' careers are concerned, with implications for induction and mentoring.
Induction: Making the Leap
Authors: Ling Lorraine M.
Published: April 2009

This article provides a critical examination of a variety of approaches to induction focusing especially upon Australia and other Pacific Rim countries. The question of the purposes induction serves for graduate teachers, experienced teachers and education systems is addressed in terms of whether it is a technical exercise which preserves the existing teacher culture, or whether it is a means to critically approach teaching as a profession and to bring about change and renewal. In an era where the local and the global intersect to bring about glocalisation, it is suggested here that new approaches to induction are required which do more than preserve the status quo or which are narrowly about understanding and official knowledge of the existing systems. A ‘radical centre’ model is proposed which blends elements of the Old Democratic Left and the New Right to provide the basis for a new approach to teacher induction.
Supportive Induction Slows the Revolving Door
Authors: Wilkinson Gayle A.
Published: April 2009

The revolving door appropriately describes the attrition among beginning teachers. Especially high attrition plagues our urban schools where highly qualified teachers are most crucial. Even though research over 3 decades has provided the basis for intricate induction programs, not all new teachers experience them. Effective mentoring has provided the greatest impact on increasing teacher retention, but often is not sufficient support alone. Alternative teacher certification programs have increased the numbers going into teaching, but no firm evidence has proven they remain longer. This report explains one example of induction support that results in greater retention.
Hydrodynamic performance of coaxial contra-rotating propeller (CCRP) for large ships
Authors: Ghassemi Hassan
Published: April 2009

Hydrodynamic performance of coaxial contra-rotating propeller (CCRP) for large ships

This paper describes a coaxial contra-rotating propeller (CCRP) system to calculate the hydrodynamic characteristics and then obtain the optimum operational condition to install on two different large bulk carrier and VLCC. The method is based on boundary element method (BEM) to obtain the hydrodynamic performance of any complicated configuration such as CRP system, and then the optimum propeller data is obtained by the systematical method at the design condition. We prepared a software package code, namely SPD (Ship Propeller Design), which has model mesh generation, solver and numerical output results. The comparison of the propulsive performance was made between the propeller alone and CRP arrangement. Major finding include good agreement between predictions using the numerical code and experimental data for both ships.
Identification of shaft line alignment with insufficient data availability
Authors: Murawski Lech
Published: April 2009

Identification of shaft line alignment with insufficient data availability

The paper presents a method of identification parameters of shaft line alignment in case of the lack of producers' data. Proper shaft line alignment is often a problem for repair shipyards, for aged ships without sufficient documentation. Author proposed combined experimental-analytical method for identified some existing parameters and checking (and eventually correcting) power transmission system's foundation. Specialised software has been developed for shaft line alignment calculations with influence coefficients. An example analysis has been performed for cargo ships with medium-speed main engine and second one with slow-speed propulsion system. Multivariant computations supported by measurements of the ships' shaft line have been carried out.
Ring thruster — a preliminary optimisation study
Authors: Matuszewski Leszek
Published: April 2009

Ring thruster — a preliminary optimisation study

The ring thruster is a new type of propeller, for which there is no experimental data to verify analytical design calculations. A significant feature of the ring thruster is the absence of a shaft. Propeller blades are mounted to the ring rotating inside the housing, which has the shape of a nozzle. For this reason the ring thruster is closest, with respect to both the construction and principle of operation, to the Kort nozzle propeller. The absence of a shaft and no gap between the blades and the nozzle make it impossible to fully relay on results obtained from Kort nozzle propeller examination. What is more, the already existing computer codes developed for designing Kort nozzle propellers cannot be directly used for designing ring thrusters either. That is why for this purpose a new code determining hydrodynamic characteristics based on the theory of the vortex lifting surface will be used. When using the above method, some differences between calculated and experimentally recorded results are expected to be observed. To a significant extent, the level of the torque taken by the thruster will be affected by drag of the rotating ring to which the blades are fixed. Examining a propeller equipped with a rotating ring has revealed that the expected torque increment may reach as much as a few per cent, at the comparable level of axial force (thrust). At the present stage of ring propeller investigations there is no data available on how to shape the ring propeller blades. Possible comparison calculations, done using the existing computer code, will allow, the most, the shape of the blades to be determined for preliminary tests in the cavitation tunnel and on a self-propelled model. And only the results obtained in these tests will provide opportunities for verification of preliminary design calculations. It should be stressed, however, that developing design procedures for this type of propellers will require additional optimisation calculations, with further experimental verification. And this should be the subject of separate investigations.
Evaluating theYouth Criminal Justice Actafter Five Years: A Qualified Success
Authors: Bala Nicholas , Carrington Peter J. , Roberts Julian V.
Published: April 2009

The Youth Criminal Justice Act (2003) was enacted with the intent of decreasing the use of courts and restricting the use of custody for adolescent offenders, while improving the effectiveness of the responses to serious violent youth offenders. This paper assesses the impact of the act in its first five years. It reviews salient provisions of the act dealing with sentencing and diversion, discusses Supreme Court of Canada jurisprudence interpreting the act, and presents statistical data on the impact of the YCJA on diversion and sentencing of youth and on youth court and custodial caseloads. The Supreme Court has narrowly interpreted the provisions of the YCJA that allow for the use of custody, contributing to a reduction in use of custody. The Court has also emphasized that youth are to be treated differently from adults and ruled unconstitutional provisions of the YCJA that created a presumption of adult sentencing for the most serious offences by young offenders, limiting the effect of provisions of the act directed at serious violent offenders. The YCJA has succeeded in significantly reducing the rates of use of court and custody, without increasing recorded youth crime. There continue to be significant regional variations in rates of use of youth courts and custody. Although regional differences in the use of court have declined under the YCJA, variation in the use of custody has not been significantly affected by the new act. Youth crime remains a contentious political concern in Canada.
Trends in the Imprisonment of Women in Canada
Authors: Gartner Rosemary , Webster Cheryl Marie , Doob Anthony N.
Published: April 2009

There are conflicting claims about whether women's imprisonment in Canada has followed the trend toward increasing punitiveness observed in a number of other western nations. This paper provides a detailed description of the scope of women's imprisonment in Canada since the early 1980s to adjudicate between these claims. Using different measures of imprisonment and data from federal and provincial prisons for women, the paper shows that we do not have convincing national evidence that there has been substantial growth in women's imprisonment Canada over the past few decades. There are however, some important gaps in the existing data that make it impossible to describe the full extent of the imprisonment of women and, more importantly, trends in the size of the population of women in prison. At the same time data from one province – Ontario – describe an important and disconcerting shift in the nature of women's imprisonment that has gone largely unnoticed by scholars: a large and growing proportion of the imprisoned female population is made up of women who are not serving sentences. The paper concludes with a call for more attention to the increase in the remand population and to what it means for theories of punitiveness.
Racism versus Professionalism: Claims and Counter-claims about Racial Profiling
Authors: Satzewich Vic , Shaffir William
Published: April 2009

This paper examines the meaning of police denials of racial profiling. Based on interviews with members of Hamilton Police Service, we suggest that the concept of a police subculture offers the most credible backdrop for understanding what is commonly termed racial profiling. When contextualized in this manner, racial profiling is perceived by the police as one in a series of activities that define their work. We argue that, when seen in the context of police subcultures, such profiling occurs even in the absence of officers who may be inclined to prejudice or discrimination against members of visible minorities. As well, that subculture provides police with a powerful and convincing deflection rhetoric to neutralize claims that the policing institution has failed to root out the racist practices of its officers.
Policer la violence: analyse du taux de déclaration et du taux d’enregistrement des victimisations criminelles au Canada en 1999 et 2004
Authors: Ouimet Marc , Tessier-Jasmin Jean-Michel
Published: April 2009

This article uses data from Canadian victimization surveys between 1999 and 2004 to analyse the factors shaping two decisions of vital importance to the justice system – namely, the reporting of a crime to the police and the recording of a crime by the police. These analyses serve to show that the seriousness of the crime, and not the characteristics of the victim, is the main factor driving the decision to report a crime to the police. Likewise, the police officially record approximately 80% of the criminal events reported to them and are not influenced by the characteristics of the victim (e.g., age, gender, ethnic origin, schooling level, income, etc.). For this reason, they appear to take a protocol-based approach to their work. Finally, the analyses show that the reporting and recording rates for crimes against property were lower in 2004 than in 1999 – a fact that may partially account for the drop in Canada's official crime rate. However, the reporting and recording rate for violent crimes is up. Accordingly, violent crime has become a growing focus of concern among the general public and the police authorities alike.
In vitro efficacy of some indigenous plants on the inhibition of development of eggs of Ascaridia galli (Digenia: Nematoda)
Authors: Islam KR , Farjana T , Begum N , Mondal MMH
Published: April 2009

In vitro efficacy of five indigenous plants namely Bishkatali (Polygonum hydropiper), Neem (Azadirachta indica), Papaya (Carica papaya), Korolla (Momordica charantia) and Mahogany (Swietenia macrophylla) were studied against the development of Ascaridia galli eggs from July 2007 to May 2008. Fresh juice, extracts and dust of leaves were tested. Fresh juice of leaves were trialed at 5%, 10% and 20% concentrations; aqueous, ethanol and methanol extracts were used at 1%, 2% and 4% concentrations and dusts of leaves were applied at 10% and 20% concentration. Among the trials, 4% of methanol extracts of papaya showed the highest efficacy (92.86%) followed by 4% ethanol extract of papaya (92%). Among the selected plants and in all three concentrations of fresh juice of leave, Bishkatali (88.46% at 20% conc.) was the highest effective plant against the development of A. galli eggs. Papaya showed the highest efficacy (71.42%) in 1% aqueous solution, but bishkatali was found as the best (73.33% and 83.33% respectively) in 2% and 4% concentration of ethanol extract of the five selected plants. In vitro screening of 5 plants with ethanol extract revealed that papaya was the highest efficacious plant (92% at 4% conc.) against development of A. galli eggs. Among the plants, in all concentrations of methanol extract of leaves, papaya was observed as best plant (92.86%, 88% and 78.95% at 4%, 2% and 1% of conc. respectively) followed by bishkatali (80% and 75% at 4% and 2% of conc. respectively) and neem (78.57% and 73.08% at 4% and 2% conc. respectively). In two concentrations of dust of leaves, bishkatali was observed as the effective plant (75% at 20% and 73.33% at 10% conc.) among the five plants. The present study suggests that dust of bishkatali leaves can be used with litter for inhibition of development of A. galli eggs and fresh juice and extract of bishkatali, neem and papaya may be impregnated in litter and used after sun dry. Key words: In vitro efficacy, indigenous plants, development, Ascaridia galli eggs doi: 10.3329/bjvm.v6i2.2329 Bangl. J. Vet. Med. (2008). 6 (2): 159-167 Â Â
Studies on medicinal plants against gastroinstestinal nematodes of goats
Authors: Sujon MA , Mostofa M , Jahan MS , Das AR , Rob S
Published: April 2009

A detailed investigation was performed with the aim to find out the indigenous medicinal plants having anthelminthic action. Ten (10) indigenous medicinal plants were primarily selected and the ethanol extracts were prepared for anthelminthic trial and determination of anthelminthic properties in vitro and in vivo against the gastro-instestinal nematodes in goat during the period from July 2006 to December 2006. Screening of ethanol extracts of selected plants showed the anthelmintic activity against gastrointestinal nematodes at lower concentration (50 mg/ml). In vivo screening (by oral administration) of four plant extracts (ethanol) showed variable degree of efficacy in experimentally infected goats, as measured by faecal egg count reduction test. A relatively higher efficacy was recorded in ethanol extract of neem treated animals in comparison to other plants extracts. Ethanol extracts of korolla also showed significant efficacy. The results obtained in this study showed that ethanol extract of Labanga, Neem, Karolla and Pineapple at the dose of 100mg/kg showed a significant and potent antinematodal effect. These findings indicate that the adult gastrointestinal nematodes are more vulnerable to selected indigenous plants. Within these ten (10) plants 4 showed more than 70% efficacy at a concentration of 100mg/mkg. Key words: Medicinal plants, anthelmintics, nematodes, fecal egg count, goat doi: 10.3329/bjvm.v6i2.2333 Bangl. J. Vet. Med. (2008). 6 (2): 179-183
Effect of garlic and vitamin B-complex in lead acetate induced toxicities in mice
Authors: Khan MSH , Mostofa M , Jahan MS , Sayed MA , Hossain MA
Published: April 2009

The experiment was performed on 25 adult mice, (Swiss albino), weighing about 25 gm, maintained on standard pellet diet and drinking water ad libitum. All the mice were randomly divided into five equal groups (5x5). Each group comprised of five mice was marked as group A, B, C, D and E. In the present study an attempt has been taken to study the effect of Garlic and vitamin B-complex in lead induced toxicities in mice with the observation of some parameters as toxic signs and body weight, some haematological parameters like total erythrocyte count (TEC), total leukocyte count (TLC), haemoglobin content (Hb%) and Packed cell volume (PCV), some biochemical parameters such as serum glutamate pyruvate transaminase SGPT/ALT, Serum glutamate Oxaloacetate transaminase (SGOT/AST) and postmortem changes in mice. An attempt was also made to estimate the residual deposition of lead in body tissues i.e. blood, liver, kidney, brain and bone in mice. Mice treated with lead acetate showed severe toxic signs and significantly reduced total erythrocyte count, total leukocyte count, haemoglobin content and packed cell volume and significant elevation of SGPT and SGOT. But in case of mice treated by lead acetate along with Garlic and vitamin B-complex showed almost normal levels of haematological and biochemical parameters. From this experiment it is revealed that Garlic and vitamin B-complex has protective and curative effect in lead toxicity. The mean body weight of mice of group B (only lead acetate) was significantly (p < 0.01) decreased, in comparison with the other treated groups. Lead acetate group also significantly reduced (p < 0.01) total erythrocyte count, packed cell volume and hemoglobin content was on 42 days of treatment. SGPT and SGOT were significantly elevated in all treated groups in comparison with control group. The liver of the mice of group B were blackish discoloration and enlarged. The significant reduction of lead in blood, liver and kidney was found in group E < C< D in comparison to group B (lead treated). The order of effectiveness was Garlic + Vitamin B- complex > Garlic > Vitamin Bcomplex. Key words: Garlic, vitamin B-complex, lead acetate, mice Â  doi: 10.3329/bjvm.v6i2.2337 Bangl. J. Vet. Med. (2008). 6 (2): 203-210
Comparative efficacy of powdered form of stevia (Stevia rebaudiana Bertoni) leaves and glimepiride in induced diabetic rats
Authors: Sumon MH , Mostofa M , Jahan MS , Kayesh MEH , Haque MA
Published: April 2009

Now a day, various medicinal plants are becoming popular for the treatment of different diseases. Some medicinal plants are being used for the treatment of diabetes all over the world. The study was conducted to investigate the effects of powdered form of Stevia (Stevia rebaudiana Bertoni) leaves on blood glucose concentration and body weight in Streptozotocin induced diabetic rats and for its efficacy study with a patent drug, Glimepiride. The effects of powdered form of Stevia leaves was evaluated in the Streptozotocin (STZ; 55 mg/kg body weight as single intraperitoneal injection) induced diabetic rats and for this, powdered form of Stevia leaves was orally administered at three different dose rates of 150 mg/kg, 200 mg/Kg and 250 mg/Kg body weight, respectively once a day for 3 weeks. Changes in the blood glucose levels and body weights were measured and the data obtained were compared with that of Glimepiride statistically by using Student's unpaired t-test. The powdered form of Stevia leaves produced significant (p < 0.01 or p < 0.05) hypoglycemic effects on Streptozotocin induced diabetic rats in comparison with that of the standard drug, Glimepiride. Powdered form of Stevia leaves at a dose rate of 250 mg/Kg decreased body weight significantly (p < 0.01 or p < 0.05) in STZ-induced diabetic rats. From this study, it was observed that powdered form of Stevia leaves possessed both hypoglycemic and body weight reducing effects. Key words: Stevia rebaudiana Bertoni, glimepiride, streptozotocin, diabetic rat doi: 10.3329/bjvm.v6i2.2338 Bangl. J. Vet. Med. (2008). 6 (2): 211-215