No description available.

Study was conducted to evaluate in vitro digestibility of native warm-season grasses. Three grasses were used: big bluestem (Andropogon gerardii Vitman), little bluestem (Schizachyrium scoparium Nash), and indiangrass (Sorghastrum nutans Nash). There were no differences in NDF, ADF, FAT and OM of the three grass species. However, DM, hemicellulose and CP were slightly different in the three grass species. Also, the frequency nested in cutting effects was determined. In vitro dry matter disappearance of big bluestem, little bluestem and indiangrass was evaluated to determine rate of disappearance. The 100 % indiangrass revealed the greatest rate of disappearance for IVDMD and 100 % little bluestem grass the least, respectively. However, that of other proportion mixtures of treatments and 100 % big bluestem grass were in between. There were no differences in in vitro neutral detergent fiber disappearances among treatments.

No description available.

No description available.

A 147cm sediment core from Lake DV09, northern Devon Island, Nunavut, Canada (75° 34’34”N, 89° 18’55”W) contains annually-laminated (varved) sediments, providing a 1600-year record of climate variability. A minerogenic lamina deposited during the annual thaw period and a thin deposit of organic matter deposited during the summer and through the winter, together form a clastic-organic couplet each year. The thinnest varves occur from AD800-1050, and the thickest from AD1100-1300, during the Medieval Warm Period. The relative sediment density is also highest during this period suggesting increased sediment transport energy. The coldest period of the Little Ice Age appears to be during the AD1600s. Varve widths over the past century indicate climate warming in the region. / This research program was funded by the Natural Sciences and Engineering Research Council of Canada (NSERC), and the Canadian Foundation for Climate and Atmospheric Sciences (CFCAS). A tuition bursary from Ultramar Inc. also helped in making this research possible. Logistical support was provided by the Polar Continental Shelf Project (PCSP Contribution number 04508).

Living at the northern limits of its geographic range, the Florida manatee is particularly susceptible to cold stress-related mortality during the winter months, with most deaths occurring in the lower two-thirds of the state. Contributing to this cold stress susceptibility is the manatee's limited physiological and behavioral responses available when thermally stressed. While capable of migrating south in response to falling water temperatures, manatees must still find warm water when ambient river temperature drops below 20°C for more than a few days. This is in part due to the species low metabolic rate, limited capacity for thermogenesis, and limited ability to raise its metabolic rate. Prolonged exposure to cold temperatures may result in cold stress syndrome, which involves a number of potentially life-threatening, if not fatal physiological changes. Survival during the winter months is therefore, dependent upon the manatee's ability to balance basic physiological needs, primarily the need to forage and to obtain fresh water with the need to stay warm. When identifying which animals are most susceptible and where, analyses of statewide manatee mortality records from 1996 through 2011 (n = 823) indicated that, size and location matter. Medium to large-sized calves accounted for the majority of documented death from cold stress (46.6%), while subadults and small calves were the least represented size classes (14.3 % and 9.5%, respectively). Adults slightly outnumbered subadults (15.8%). Males outnumbered females in all size classes but gender differences were not statistically significant. With regards to location, two areas of the state, the southwest and central east coasts showed the highest incidents of cold stress-related mortality. Both are regions with no primary, natural warm-water springs and whose principal warm-water refugia are power plant effluents. Brevard County on the central east coast is the area most at risk during cold weather events accounting for more than 25% of all cold stress deaths statewide. Warm-water sites within this region are few and relatively underrepresented in the literature in an area well-studied in terms of manatee abundance and distribution relative to the operational power plant. Results from cold stress data analyses emphasize the importance of identifying and characterizing the physical attributes of both known and suspected secondary warm-sites used by manatees in this region for both long and short term protection of the species, and its critical habitat. Three locations within Brevard County identified as passive thermal basins (PTBs), and classified as secondary warm-water sites, have been documented supporting in excess of 100 manatees on numerous occasions, and during winters of varying severity. Unique in physical appearance, distance to forage, hydrology including thermal profiles, and when it was used by manatees, each site challenged the accepted definitions and criteria of what constitutes an acceptable and appropriate warm-water site. Through analyses of photo-identification records, site fidelity at two of these warm-water sites, the Berkeley Canal and the Desoto Canal, was established for a minimum of 20 highly identifiable animals, 15 of which used adjacent sites within the same year, and 6 that used both sites but during different years. Observations of daily use patterns within the sites supported optimization of thermoregulation through adjustments in both vertical and horizontal movement, the latter of which seemed to follow the path of the sun. Manatees using the sites also made use of bottom sediment presumably to stay warm at all three locations. Temperature data indicated that water temperatures monitored in the sediment at secondary sites were some of the highest in the county. The predictable movements during all but the coldest weather fronts indicated that manatees utilized these sites during the early morning and afternoon hours when ambient river temperatures were coldest, gradually returning to the river to feed as ambient temperatures began to rise later in the afternoon. The availability of PTBs in proximity to primary warm-water sites within the region may provide an important component needed for manatees to successfully balance the need to forage with the need to stay warm by providing a network that allows for more efficient foraging while reducing exposure to sub-critical ambient river temperatures. The challenge of balancing the need to forage and to maintain homeostasis in the face of thermal stress is complex. This complexity was best approached and better understood through use of a manatee energetics model. The model was designed to facilitate simulation of an unlimited number of different case scenarios involving the exposure of virtually created manatees to a variety of winter conditions as might be experienced by real manatees in a natural system. Sixty-four different simulations were run using six virtual manatees of differing ages, gender, physical parameters, and knowledge of warm-water sites. Simulations were conducted using actual winter water temperature data from Brevard secondary sites and the ambient river from both a mild and a severe winter season. Outcomes, measured as changes in physical parameters indicative of body condition (i.e. mass, percent body fat, blubber depth, girths, etc.), showed that all else being equal, calves in the 2 year-old range fared poorly in all scenarios when compared to individuals of larger size. Subadults fared better than larger adults. This outcome illustrates the complex relationship between size, energy requirements and the synergistic effects of body mass, body fat and blubber thickness on SA:V ratio. Model outcomes agree closely with manatee cold stress mortality analyses predicting that medium to large-sized calves are most susceptible to CS, followed by adults, then subadults. Because all models are simplifications of complex systems, the manatee energetics model is not without its flaws and limitations. The current version of the model could not predict the point at which cold stress mortality would occur. However, a cold stress warning system incorporated into the design alerts the user if potential CSS is likely based on changing physical parameters. Another limitation was the inability of the model to account for the behavioral plasticity of individual subjects since virtual manatees respond to water temperatures based on the user defined rules. A number of additional limitations related to gaps in existing manatee data the gaps were identified and defined. Despite these gaps, the model is designed to allow for incorporation of additional interactions, feedback loops and relevant data as it becomes available and as additional physiological interactions and energy requirements are more clearly defined. Sensitivity analyses, a feature of the model that allowed for modifications in a number of physical as well as environmental parameters, provided an otherwise unlikely opportunity to see how incremental changes in input values, specifically the starting values for mass, percent body fat and blubber depth affected the model's outcome. Ultimately the goal of the model was to facilitate a better understanding of complex relationships by challenging our preconceived understanding of the manatee and its environment.

We are at a time when energy efficiency and the reduction in the use of non-renewable energy is an important objective in all aspects and will continue to be so, therefore it is necessary to try to reduce energy and heat losses in the systems used in homes and, in particular, in the domestic hot water (DHW) system. This study aims to find out the advantages and disadvantages of an innovative pipe-in-pipe (PIP) system for DHW circulation with respect to the conventional system of two separate pipes. Previous studies have shown that DHW circulation is indeed an important point of energy losses in the home and that it is possible to reduce these losses by using the innovative system under study. The properties and coefficients defining the heat transfer system have been obtained for both the traditional and innovative systems by using empirical equations and iterative processes, indicating a 32% reduction in heat losses in favour of the pipe-in-pipe system. However, this result has been obtained in a kind of case study, using some simplifying assumptions, needed to accomplish to work within limited time. So the result could vary if a somewhat different system is studied, which is why it is necessary to carry out further studies and research on this subject in order optimize DHW systems in buildings.

Здания являются крупными потребителями энергии во всех странах. В неблагоприятных погодных условиях большая часть энергии идет на кондиционирование зданий. Эта нагрузка на кондиционирование воздуха может быть уменьшена многими способами; среди них выделяется правильная конструкция, выбор технологий и их компонентов. Это исследование направлено на изучение особенностей, которые способствуют проектированию жилого комплекса с критериями устойчивости для зон с теплым климатом. экологичные дома, которые способны создать комфортную среду, с инструментами, которые позволяют нам реализовать экономические и комфортные аспекты при вводе в эксплуатацию здания. В этой работе описываются различные подходы и приложения в традиционном и moderna архитектурном дизайне, что приводит к набору параметров и правил, которые следует учитывать при планировании здания. Постулируется, что руководящие принципы проектирования включают принципы здоровой экосистемы и ландшафтного дизайна, превращая их в два момента, которые необходимо правильно понять, потому что они могут быть вектором для создания построенной среды, начиная от простого обслуживания в текущем сценарии и становясь неотъемлемым компонентом интеграции архитектуры и среды. / Buildings are major energy consumers in all countries. In adverse weather conditions, most of the energy goes to the air conditioning of buildings. This load on air conditioning can be reduced in many ways; among them stands out the correct design, the choice of technologies and their components. This study is aimed at studying the features that contribute to the design of a residential complex with sustainability criteria for areas with a warm climate. eco-friendly houses that are able to create a comfortable environment, with tools that allow us to implement economic and comfortable aspects when commissioning a building. This article describes various approaches and applications in traditional and moderna architectural design, which leads to a set of parameters and rules that should be taken into account when planning a building. It is postulated that the design guidelines include the principles of a healthy ecosystem and landscape design, turning them into two points that need to be properly understood, because they can be a vector for creating a built environment, starting from simple maintenance in the current scenario and becoming an integral component of the integration of architecture and environment.

The concept of visiting a restaurant is no longer related to the consumption of a food. The total process of visiting a restaurant became a pleasant experience to elevate mood and satisfaction and create a memorable experience. In this thesis, we aim to case study three restaurants of the same brand using quantitative and qualitative measurements such as questionnaire, V/P theory, and measurements. Moreover, the results of the assessments will be used to investigate how lighting can improve the dining experience in the restaurant while taking into consideration reducing energy consumption. The results of the quantitative and qualitative analysis indicated the lighting in each of these restaurants differs from each other, and they require a redesign to enhance customer satisfaction and to be more energy efficient. The thesis presented a lighting solution which considers all the relevant factors for customer satisfaction from literature and standards. The solution can improve the customer experience in the restaurant and advance its compliance with the sustainability goals.

Twenty eight years ago there was a brutal war in Bosnia and Herzegovina between the three main ethnic groups in the country as a part of the bracke-up of Yugoslavia  (Balazs, 2008). This thesis analyses how the OHR has contributed to the reconciliation process in Bosnia and Herzegovina by looking at academic articles, information from local actors, analysing the local debate and semistructured interviews within the international community in BiH. Primarily, Bar-Tals conditions for reconciliation are used to measure how the OHR has contributed to the reconciliation process. It is clear that OHR has contributed positively to the reconciliation process however the process has been slow and some consider the reconciliation process to go in the wrong direction right now. To push the reconciliation process forward is explicitly not a part of the OHRs mandate however there is a lack of actors working with it and OHR has been a suitable actor to do so. However, the OHR have lost respect because they have not held people accountable when violating the OHR decisions. Additionally, the OHR is seen as anti-Serb by the Bosnian Serbs, even though it is unrightfully so this has resulted in there decisions occasionally leading to further polarisation between the ethnic groups. Thus, the OHR may not be the most suitable actor to push BiH forward in the reconciliation process in the future, however they are still needed to make sure that the peace agreement is followed to avoid another war. There is already extensive research on the reconciliation process in BiH and the OHR separately however there is very limited research on how the OHR have worked with the reconciliation process even though the research is relevant considering that there is an discussion on about how much influence the OHR should have in BiH and if they should remain in BiH (Hayat Media BiH, 2023). As well as to give the OHR an opportunity to learn from perilous mistakes and perfect their way of working with reconciliation.