To improve the self-cleaning ability of aquaculture tank and the efficiency of circulating water,physical and numerical experiments were conducted on the influence of inlet structure on sewage discharge in a rounded s...To improve the self-cleaning ability of aquaculture tank and the efficiency of circulating water,physical and numerical experiments were conducted on the influence of inlet structure on sewage discharge in a rounded square aquaculture tank with a single inlet.Based on the physical model of the tank,analysis of how inlet structure adjustment affects sewage discharge efficiency and flow field characteristics was conducted to provide suitable flow field conditions for sinkable solid particle discharge.In addition,an internal flow field simulation was conducted using the RNG k-εturbulence model in hydraulic drive mode.Then a solid-fluid multiphase model was created to investigate how the inlet structure affects sewage collection in the rounded square aquaculture tank with single inlet and outlet.The finding revealed that the impact of inlet structure is considerably affecting sewage collection.The conditions of C/B=0.07-0.11(the ratio of horizontal distance between the center of the inlet pipe and the tank wall(C)to length of the tank(B))andα=25°(αis the angle between the direction of the jet and the tangential direction of the arc angle)resulted in optimal sewage collection,which is similar to the flow field experiment in the rounded square aquaculture tank with single inlet and outlet.An excellent correlation was revealed between sewage collection and fluid circulation stability in the aquaculture tank.The present study provided a reference for design and optimization of circulating aquaculture tanks in aquaculture industry.展开更多
Objectives:This study was conducted to examine the differences between perceptions and practices of family-centered care among Thai pediatric nurses.Methods:This mixed-methods study consisted of two phases,in the firs...Objectives:This study was conducted to examine the differences between perceptions and practices of family-centered care among Thai pediatric nurses.Methods:This mixed-methods study consisted of two phases,in the first phase,a descriptive comparative design using the Family-Centered Care Questionnaire-Revised(FCCQ-R)was administered to 142 pediatric nurses from a university hospital in Bangkok,Thailand.in the second phase,qualitative interviews were conducted with 16 pediatric nurses to gather complementary information regarding the major findings from the first phase.Results:The results revealed that family strengths and individuality were rated the highest as the most important elements and the most frequent practices.Parent/professional collaboration was perceived as the least important element,while the design of the heath care delivery system was rated as the least frequent practice.The qualitative data revealed that the major reasons for suboptimal implementation included a common perception that family-centered care is a Western concept,nurses'weak attitudes towards their roles,and a shortage of nurses.Conclusions:Nurses agreed that the identified elements of family-centered care were necessary but that they did not incorporate the concepts into their daily nursing practice to maintain their endorsement of the family-centered care model.Further study is needed to explore how family-centered care is understood and operationalized by Thai nurses and how hospital administration and environments can be modified to support this care model.展开更多
It was of interest to determine the water holding effect of the gum from the Acacia senegal var. kerensis in extended beef rounds. Beef rounds injected at two injection levels (30% and 35% over green weight) with curi...It was of interest to determine the water holding effect of the gum from the Acacia senegal var. kerensis in extended beef rounds. Beef rounds injected at two injection levels (30% and 35% over green weight) with curing brines containing gum arabic at 1%, 1.5%, 2.0%, 2.5% and 3.0% of the final product were investigated. A non-injected sample and a product injected with soy protein concentrate (SPC) at 3.5% of the final product weight were prepared for comparison. Mean results indicated that the level of gum arabic from Acacia senegal var. kerensis used in curing brines significantly increased the cook yield and reduced the extractable moisture in cooked extended beef rounds. The injection of beef with curing brine also significantly increased the cook yield and the extractable moisture of the extended beef rounds as compared to the non-injected beef samples. Both injection and gum levels had a significant effect on the proximate composition and sensory properties of the resulting beef rounds. Sensory analysis revealed that samples containing gum arabic at 2.5% were juicier and comparable to those containing SPC at 3.5% injection level. Furthermore, these samples had the highest overall preference comparable to samples injected with curing brines containing SPC. This is the first report on the physicochemical properties of extended beef rounds containing gum arabic from Acacia senegal var. kerensis.展开更多
基金Supported by the 2023 Central Government Finance Subsidy Project for Liaoning Fisheries,the Key Research Project of Liaoning Provincial Department of Education in 2022(No.LJKZZ20220091)the National Natural Science Foundation of China(No.31872609)+1 种基金the Innovation Support Program for High-level Talents of Dalian City(No.2019RD12)the earmarked fund for CARS-49。
文摘To improve the self-cleaning ability of aquaculture tank and the efficiency of circulating water,physical and numerical experiments were conducted on the influence of inlet structure on sewage discharge in a rounded square aquaculture tank with a single inlet.Based on the physical model of the tank,analysis of how inlet structure adjustment affects sewage discharge efficiency and flow field characteristics was conducted to provide suitable flow field conditions for sinkable solid particle discharge.In addition,an internal flow field simulation was conducted using the RNG k-εturbulence model in hydraulic drive mode.Then a solid-fluid multiphase model was created to investigate how the inlet structure affects sewage collection in the rounded square aquaculture tank with single inlet and outlet.The finding revealed that the impact of inlet structure is considerably affecting sewage collection.The conditions of C/B=0.07-0.11(the ratio of horizontal distance between the center of the inlet pipe and the tank wall(C)to length of the tank(B))andα=25°(αis the angle between the direction of the jet and the tangential direction of the arc angle)resulted in optimal sewage collection,which is similar to the flow field experiment in the rounded square aquaculture tank with single inlet and outlet.An excellent correlation was revealed between sewage collection and fluid circulation stability in the aquaculture tank.The present study provided a reference for design and optimization of circulating aquaculture tanks in aquaculture industry.
基金This research project was supported by the China Medical Board of New York,Inc.Faculty of Nursing,Mahidol University.
文摘Objectives:This study was conducted to examine the differences between perceptions and practices of family-centered care among Thai pediatric nurses.Methods:This mixed-methods study consisted of two phases,in the first phase,a descriptive comparative design using the Family-Centered Care Questionnaire-Revised(FCCQ-R)was administered to 142 pediatric nurses from a university hospital in Bangkok,Thailand.in the second phase,qualitative interviews were conducted with 16 pediatric nurses to gather complementary information regarding the major findings from the first phase.Results:The results revealed that family strengths and individuality were rated the highest as the most important elements and the most frequent practices.Parent/professional collaboration was perceived as the least important element,while the design of the heath care delivery system was rated as the least frequent practice.The qualitative data revealed that the major reasons for suboptimal implementation included a common perception that family-centered care is a Western concept,nurses'weak attitudes towards their roles,and a shortage of nurses.Conclusions:Nurses agreed that the identified elements of family-centered care were necessary but that they did not incorporate the concepts into their daily nursing practice to maintain their endorsement of the family-centered care model.Further study is needed to explore how family-centered care is understood and operationalized by Thai nurses and how hospital administration and environments can be modified to support this care model.
文摘It was of interest to determine the water holding effect of the gum from the Acacia senegal var. kerensis in extended beef rounds. Beef rounds injected at two injection levels (30% and 35% over green weight) with curing brines containing gum arabic at 1%, 1.5%, 2.0%, 2.5% and 3.0% of the final product were investigated. A non-injected sample and a product injected with soy protein concentrate (SPC) at 3.5% of the final product weight were prepared for comparison. Mean results indicated that the level of gum arabic from Acacia senegal var. kerensis used in curing brines significantly increased the cook yield and reduced the extractable moisture in cooked extended beef rounds. The injection of beef with curing brine also significantly increased the cook yield and the extractable moisture of the extended beef rounds as compared to the non-injected beef samples. Both injection and gum levels had a significant effect on the proximate composition and sensory properties of the resulting beef rounds. Sensory analysis revealed that samples containing gum arabic at 2.5% were juicier and comparable to those containing SPC at 3.5% injection level. Furthermore, these samples had the highest overall preference comparable to samples injected with curing brines containing SPC. This is the first report on the physicochemical properties of extended beef rounds containing gum arabic from Acacia senegal var. kerensis.
