Assessing the sources and magnitude of diurnal nitrate variability in the San Joaquin River (California) with an in-situ optical nitrate sensor and dual nitrate isotopes

We investigated diurnal nitrate (NO3-) concentration variability in the San Joaquin River using an in situ optical NO3- sensor and discrete sampling during a 5-day summer period characterized by high algal productivity. Dual NO3- isotopes (delta N-15(NO3) and delta O-18(NO3)) and dissolved oxygen isotopes (delta O-18(DO)) were measured over 2 days to assess NO3- sources and biogeochemical controls over diurnal time-scales. Concerted temporal patterns of dissolved oxygen (DO) concentrations and delta O-18(DO) were consistent with photosynthesis, respiration and atmospheric O-2 exchange, providing evidence of diurnal biological processes independent of river discharge. Surface water NO3- concentrations varied by up to 22% over a single diurnal cycle and up to 31% over the 5-day study, but did not reveal concerted diurnal patterns at a frequency comparable to DO concentrations. The decoupling of delta N-15(NO3) and delta O-18(NO3) isotopes suggests that algal assimilation and denitrification are not major processes controlling diurnal NO3- variability in the San Joaquin River during the study. The lack of a clear explanation for NO3- variability likely reflects a combination of riverine biological processes and time-varying physical transport of NO3- from upstream agricultural drains to the mainstem San Joaquin River. The application of an in situ optical NO3- sensor along with discrete samples provides a view into the fine temporal structure of hydrochemical data and may allow for greater accuracy in pollution assessment.

Referral of the Halocypridina Thaumatocypris (Miocene, Australia) to the Cladocopina (Ostracoda, Halocyprida)

B. K. Nadeau in 1955 identified as Thaumatocypris ostracodes from the middle Miocene Glenample Clay of Victoria, southeastern Australia. Nadeau's collection of Ostracoda from the Glenample Clay was located in the collections of the Museum of Victoria, Melbourne. Examination of that material indicates that the Glenample Clay specimens attributed by Nadeau to Thaumatocypris belong to Polycope sanctacatherinae Whatley & Downing 1983. As a result, it is concluded that Thaumatocypris has not been collected in the Miocene of Australia. Furthermore, in a broader  biostratigraphic/palaeobiogeographic context, the result confirms that no member of the Suborder Halocypridina has been reported so far from the Tertiary Period.

Towering over all : the Italianate villa in the colonial landscape

The Picturesque aesthetic emerged in the later 18th century, uniting the Sublime and the Beautiful and had its roots in the paintings of Claude Lorrain. In Britain, and in Australia, it came to link art, literature and landscape with architecture. The Picturesque aesthetic informed much of colonial culture which was achieved, in part, through the production and dissemination of architectural pattern books catering for the aspirations of the rising middle classes. This was against a background of political change including democratic reform. The Italianate villa, codified and promoted in such pattern books, was a particularly successful synthesis of style, form and function. The first Italianate villa in England, Cronkhill (1803) by John Nash contains all the ingredients which were essential to the model and had a deeper meaning. Deepdene (from 1807) by Thomas Hope gave the model further impetus. The works of Charles Barry and others in a second generation confirmed the model's acceptability. In Britain, its public status peaked with Osborne House (from 1845), Queen Victoria's Italianate villa on the Isle of Wight, Robert Kerr used a vignette of Osborne House on the title page of his sophisticated and influential pattern book, The Gentleman's House (1864,1871). It was one of many books, including those of J.C, Loudon and AJ. Downing, current in colonial Victoria. The latter authors and horticulturists were themselves villa dwellers with libraries and orchards, two criteria for the true villa lifestyle. Situation and a sense of retreat were the two further criteria for the villa lifestyle. As the new colony of Victoria blossomed between 1851 and 1891, the Italianate villa, its garden setting and its landscape siting captured the tenor of the times. Melbourne, the capital was a rich manufacturing metropolis with a productive hinterland and international markets. The people enjoyed a prosperity and lifestyle which they wished to display. Those who had a position in society were keen to demonstrate and protect it. Those with aspirations attempted to provide the evidence necessary for such acceptance, The model matured and became ubiquitous. Its evolution can be traced through a series of increasingly complicated rural and suburban examples, a process which modernist historians have dismissed as a decadent decline. These villas, in fact, demonstrate an increasingly sophisticated retreat by merchants from ‘the Town’ and by graziers from ‘the Country’. In both town and country, the towers of villas mark territory newly acquired. The same claim was often made in humbler situations. Government House, Melbourne (from 1871), a splendid Italianate villa and arguably finer than Osborne House, was set in a cultivated landscape and towered above all It incorporated the four criteria and, in addition, claimed its domain, focused authority and established the colony's social status. It symbolised ancient notions of democracy and idealism but with a modem appreciation for the informal and domestic. Government House in Melbourne is the epitome of the Italianate villa in the colonial landscape and is the climax of the Picturesque aesthetic in Victoria.

The equipping inclusion studies : assistive technology use and outcomes in Victoria ; key findings and policy implications, study 1 - the equipment study, study 2 - the economic study

Approximately one in five of the Australian population lives with disability (AIHW 2006a; ABS 2003). Of these, almost 1.9 million rely on assistive technologies to live independently (Hobbs, Close, Downing, Reynolds & Walker 2009).

Assistive Technology (AT) is defined as,

‘any device, system or design, whether acquired commercially or off the shelf, modified or customised, that allows an individual to perform a task that they would otherwise be unable to do, or increase the ease and safety with which a task can be performed’ (Independent Living Centres Australia n.d).

‘Assistive Technology solutions’ have been defined as entailing a combination of devices (aids and equipment), environmental modifications (both in the home and outside of it), and personal care (paid and unpaid) (Assistive Technology Collaboration n.d).

Despite a large number of Australians relying on AT, there is little data available about life for these Australians, the extent of AT use, or unmet need for AT. Existing research in Australia suggests that aids and equipment provision in Australia is ‘fragmented’ across a plethora of government and non government programs (AIHW 2006a:35). In Victoria, one of the prime sources of government funding for AT is the Victorian Aids and Equipment Program (VAEP) which is a subsidy program for the purchase of aids and equipment, home and vehicle modifications for people with permanent or long term disability. Recent research suggests that waiting times for accessing equipment through the VAEP are high, as is the cost burden to applicants (Wilson, Wong & Goodridge 2006). In addition, there appears to be a substantial level of unmet need (KPMG 2007).

Additionally, there is a paucity of literature around the economic evaluation of AT interventions and solution packages, resulting in little evidence of their cost-effectiveness credentials.

The equipping inclusion studies : assistive technology use and outcomes in Victoria ; key findings and policy recommendations

Approximately one in five of the Australian population lives with disability (AIHW 2006a; ABS 2003). Of these, almost 1.9 million rely on assistive technologies to live independently (Hobbs, Close, Downing, Reynolds & Walker 2009).

Assistive Technology (AT) is defined as,

‘any device, system or design, whether acquired commercially or off the shelf, modified or customised, that allows an individual to perform a task that they would otherwise be unable to do, or increase the ease and safety with which a task can be performed’ (Independent Living Centres Australia n.d).

‘Assistive Technology solutions’ have been defined as entailing a combination of devices (aids and equipment), environmental modifications (both in the home and outside of it), and personal care (paid and unpaid) (Assistive Technology Collaboration n.d).

Despite a large number of Australians relying on AT, there is little data available about life for these Australians, the extent of AT use, or unmet need for AT. Existing research in Australia suggests that aids and equipment provision in Australia is ‘fragmented’ across a plethora of government and non government programs (AIHW 2006a:35). In Victoria, one of the prime sources of government funding for AT is the Victorian Aids and Equipment Program (VAEP) which is a subsidy program for the purchase of aids and equipment, home and vehicle modifications for people with permanent or long term disability. Recent research suggests that waiting times for accessing equipment through the VAEP are high, as is the cost burden to applicants (Wilson, Wong & Goodridge 2006). In addition, there appears to be a substantial level of unmet need (KPMG 2007).

Additionally, there is a paucity of literature around the economic evaluation of AT interventions and solution packages, resulting in little evidence of their cost-effectiveness credentials.

Early childhood physical activity, sedentary behaviors and psychosocial well-being: a systematic review

Objectives
Little is known about how health behaviors such as physical activity (PA) and sedentary behaviors (SB) may be associated with psychosocial well-being during the crucial early childhood period. The aim of this study was to undertake a systematic review of associations between PA, SB and psychosocial well-being during early childhood.

Methods
In February 2013, MEDLINE, PsycINFO, SPORTDiscus and Embase electronic databases were searched. Inclusion criteria were: 1. peer-reviewed publication since 1980 in English; 2. children aged birth–5 years; 3. PA or SB measured during early childhood; 4. an indicator of child psychosocial well-being; and 5. association between PA/SB and psychosocial well-being reported. Studies could be observational or interventions. Data were extracted by one author and entered into a standardized form in February and March 2013.

Results
19 studies were identified: four examined PA, 13 examined SB and two examined PA and SB. No interventions met the inclusion criteria; all included studies were observational. In total, 21 indicators of psychosocial well-being were examined, 13 only once with the remaining eight reported in more than one study. Some dose–response evidence was identified suggesting that PA is positively, and SB inversely, associated with psychosocial well-being.

Conclusions
Too few studies exist to draw conclusions regarding associations. Future high-quality cohort and intervention studies are warranted particularly investigating dose–response associations.