• Title/Summary/Keyword: Utilization Efficiency

Search Result 1,955, Processing Time 0.037 seconds

Food Consumption and Utilization Efficiency in Samia ricini Donovan Reared on Ricinus communis, lin. Leaves Supplemented with Cyanobacteria

  • Sujatha, K.;Jaikishan Singh, R.S.;Sampath, A.;sanjeeva Rao, B.V.
    • International Journal of Industrial Entomology and Biomaterials
    • /
    • v.28 no.2
    • /
    • pp.32-38
    • /
    • 2014
  • Food consumption and conversion efficiency of eri silkworm Samia ricini Donovan were studied during $4^{th}$ and $5^{th}$ larval instars by feeding castor leaves fortified with 100, 200, 300, 400 and 500 ppm concentrations of aqueous extracts of cyanobacteria Anabaena variabilis. The nutritional indices viz., ingesta, digesta, approximate digestibility (%), reference ratio and efficiency parameters like ECI and ECD were recorded which were significantly high at 400 ppm concentration treated batches of $4^{th}$ instar larvae over control batches. The decline in nutritional efficiency parameters of $5^{th}$ instar treated larvae might be due to higher utilization of the digested food for metabolic activities. Significant difference of ECI to cocoon % and non-significant difference of ECD to cocoon% and shell were observed between the treatments and control. Cyanabacteria feed supplement contains antibiotic and nutritions factors which has reflective effect on the biological parameters in eri silkworm and therefore has greater application in commercial eri silkworm rearing.

파쇄 폐타이어를 이용한 반응벽체에 관한 연구: 폐타이어 내의 MTBE(Methyl tertiary Butyl Ether) 흡착 중심

  • 박상현;이재영
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
    • /
    • 2003.04a
    • /
    • pp.176-179
    • /
    • 2003
  • Fuel oxygenates, such as Methyl tertiary Butyl Ether (MTBE) is additive in gasoline used to reduce air pollution. Gasoline components and fuel additives can leak form underground storage tanks. MTBE is far more water soluble than gasoline hydrocarbons like BTEX then it travels at essentially the same velocity as groundwater. MTBE in drinking water causes taste and odor problems. Therefore, the purpose of the this study is to examine the ability of ground rubber to sorb MTBE form water. The study consisted of running both batch and column tests to determine the sorption capacity and the flow through utilization efficiency of ground rubber. The result of Column test indicate that ground tire rubber has on the 36% utilization rate. Finally, it is clear that ground rubber present an attractive and relatively inexpensive sorption medium for a MTBE. The Author thought that to determine the economic costs of ground rubber utilization, the cost to sorb a given mass of contaminant by ground rubber will have to be compared to currently accepted sorption media.

  • PDF

The Effect of UTAUT, Dynamic Capabilities, Utilization of Smart Factory on the Intention to Continue Using: Technology Perception Moderating Effect

  • Jin-Kwon KIM;Kyung-Soo LEE
    • The Journal of Economics, Marketing and Management
    • /
    • v.11 no.6
    • /
    • pp.43-55
    • /
    • 2023
  • Purpose: The purpose of this study was to identify the relationship between smart factory utilization and continued use intention between UTAUT, dynamic capabilities of smart factory construction companies and present the company's strategic direction. Research design, data, and methodology: In this study, a structured research model was derived to confirm the relationship between UTAUT, dynamic capabilities, smart factory utilization and continued use intention and the difference according to Technology perception. For analysis a total of 223 valid questionnaires from e-commerce users were used. Confirmatory factor analysis, correlation analysis, and structural equations were conducted to verify. Results: Both UTAUT, dynamic capabilities had a significant effect on smart factory utilization as well as continued use intention. It was found that the relationship between UTAUT, dynamic capabilities, smart factory utilization, and continued use intention. differed depending on the technology perception. Conclusions: Organizational members utilize the smart factory in anticipation of effects such as work performance and various improvements. Smart factory data will be used continuously when it is useful for business processes and operations. It is necessary to establish strategies and provide training to improve the technical level and capabilities of organizational members. Through this, a strategy is needed that can be continuously used by utilizing the information obtained through smart factory to improve work efficiency, productivity and efficiency increase is needed

Rumen Manipulation to Improve Animal Productivity

  • Santra, A.;Karim, S.A.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.16 no.5
    • /
    • pp.748-763
    • /
    • 2003
  • Anaerobic rumen microorganisms mainly bacteria, protozoa and fungi degrade ligno-cellulosic feeds consumed by the ruminants. The ruminants in developing countries are predominantly maintained on low grade roughage and grazing on degraded range land resulting in their poor nutrient utilization and productivity. Hence, manipulation of rumen fermentation was tried during last two decades to optimize ruminal fermentation for improving nutrient utilization and productivity of the animals. Modification of rumen microbial composition and their activity was attempted by using chemical additives those selectively effect rumen microbes, introduction of naturally occurring or genetically modified foreign microbes into the rumen and genetically manipulation of existing microbes in the rumen ecosystem. Accordingly, rumen protozoa were eliminated by defaunation for reducing ruminal methane production and increasing protein outflow in the intestine, resulting in improve growth and feed conversion efficiency of the animals. Further, Interspecies trans-inoculation of rumen microbes was also successfully used for annulment of dietary toxic factor. Additionally, probiotics of bacterial and yeast origin have been used in animal feeding to stabilize rumen fermentation, reduced incidence of diarrhoea and thus improving growth and feed conversion efficiency of young stalk. It is envisaged that genetic manipulation of rumen microorganisms has enormous research potential in developing countries. In view of feed resource availability more emphasis has to be given for manipulating rumen fermentation to increase cellulolytic activity for efficient utilization of low grade roughage.

Enteric methane emissions, energy partitioning, and energetic efficiency of zebu beef cattle fed total mixed ration silage

  • Subepang, Sayan;Suzuki, Tomoyuki;Phonbumrung, Thamrongsak;Sommart, Kritapon
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.32 no.4
    • /
    • pp.548-555
    • /
    • 2019
  • Objective: The main objective of this study was to evaluate the effect of different feeding levels of a total mixed ration silage-based diet on feed intake, total tract digestion, enteric methane emissions, and energy partitioning in two beef cattle genotypes. Methods: Six mature bulls (three Thai natives, and three Thai natives - Charolais crossbreeds) were assigned in a replicated $3{\times}3$ Latin square design, with cattle breed genotype in separate squares, three periods of 21 days, and three energy feeding above maintenance levels (1.1, 1.5, and 2.0 MEm, where MEm is metabolizable energy requirement for maintenance). Bulls were placed in a metabolic cage equipped with a ventilated head box respiration system to evaluate digestibility, record respiration gases, and determine energy balance. Results: Increasing the feeding level had no significant effect on digestibility but drastically reduced the enteric methane emission rate (p<0.05). Increasing the feeding level also significantly increased the energy retention and utilization efficiency (p<0.01). The Thai native cattle had greater enteric methane emission rate, digestibility, and energy utilization efficiency than the Charolais crossbred cattle (p<0.05). The daily metabolizable energy requirement for maintenance in Thai native cattle ($388kJ/kg\;BW^{0.75}$, where $BW^{0.75}$ is metabolic body weight) was 15% less than that in Charolais crossbred cattle ($444kJ/kg\;BW^{0.75}$). Conclusion: Our results suggested that the greater feeding level in zebu beef cattle fed above maintenance levels resulted in improved energy retention and utilization efficiency because of the reduction in enteric methane energy loss. The results also indicated higher efficiency of metabolisable energy utilization for growth and a lower energy requirement for maintenance in Bos indicus than in Bos taurus.

Optimum Efficiency Calculation of Capacitor Run Type Single Phase Induction Motor considering Utilization Rate (이용률을 고려한 콘덴서 구동형 단상 유도전동기의 최적효율 계산)

  • Kim, Yang-Ho;Kim, Young-Sun;Choi, Sung-Jai
    • Proceedings of the KIEE Conference
    • /
    • 2007.07a
    • /
    • pp.1053-1054
    • /
    • 2007
  • This paper represents technique of optimum efficiency calculation for condenser run type single phase induction motor considering utilization rate. The material cost and loss expense are major factor of proposed algorithm. The simulation results are compared with experimental ones. And they are agreement with each other.

  • PDF

Simulation analysis on the separation characteristics and motion behavior of particles in a hydrocyclone

  • Xu, Yanxia;Tang, Bo;Song, Xingfu;Sun, Ze;Yu, Jianguo
    • Korean Journal of Chemical Engineering
    • /
    • v.35 no.12
    • /
    • pp.2355-2364
    • /
    • 2018
  • We evaluated the effect of particle size and associated dynamics on a hydrocyclone separation process in order to understand the movement of the particle trajectories inside the hydrocyclone via numerical analysis, with particles of acid hydrolysis residues discharged in $TiO_2$ production via the sulfate method as a case study. The values obtained from the numerical simulation were successfully compared with those from experimental tests in the literature, allowing a description of the dynamics of the particles, their acting forces, and their relevant properties together with separation efficiency. The results showed that particle motion is jointly controlled by the drag force, the pressure gradient force and the centrifugal force. With increasing particle size, the influence of the drag force is weakened, whereas that of the centrifugal force and pressure gradient is strengthened. Factors including particle density, slurry viscosity, and inlet slurry flow rate also contribute to a clear and useful understanding of particle motion behavior in the hydrocyclone as a method for improving the separation efficiency.

The Characteristics of the Ozonation of phenol wastewater by the variation of pH using the continuous PCR and BCR (연속식 PCR과 BCR에서 pH 변화에 따른 페놀 폐수의 오존처리특성에 관한 연구)

  • 안재동;김민수;김용대;최석규
    • Journal of Environmental Health Sciences
    • /
    • v.23 no.1
    • /
    • pp.74-80
    • /
    • 1997
  • This study was performed to estimate the ozonation characteristics of phenol wastewater with increasing pH in the continuous packed column reactor (PCR) and the bubble column reactor (BCR). Among various influencing factors that affect phenol on decomposition through the ozonation, pH was chosen as reaction parameter. Upon increasing pH from 3 to 9, the phenol removal efficiency in PCR was improved approximately by 17% while in BCR approximately by 19.2%. The improvements in the phenol removal efficiency by increasing pH caused the enhancements in ozone utilization efficiency reaching almost 100% in PCR at pH 9. In conclusions, ozone has latent power for phenol wastewater treatment, and the performance of PCR was superior to that of BCR in the aspects of phenol removal and ozone utilization efficiency.

  • PDF

Utilization of Mobile Information and Perceptions of Society: A Comparison of Korea, China, U.S.A and Japan (모바일 정보 활용은 사회인식에 어떤 영향을 미치는가: 한중미일 4개국 비교)

  • Jun, Jongkun;Lee, Thaemin;Park, Cheol
    • Information Systems Review
    • /
    • v.17 no.3
    • /
    • pp.19-38
    • /
    • 2015
  • Utilization of information increases not only individual performance but also the welfare of whole society including social trust, efficiency, and communication. This study examines the effects of the utilization of mobile information on social trust, efficiency, and communication using a survey data responding 2,000 people from Korea, China, USA, and Japan. As the results, the higher uses mobile information, the higher perceives social trust, efficiency, communication, and welfare. In addition the effects of utilization of mobile information on the perception of social trust, efficiency, communication, and welfare are different among 4 countries. Cross-cultural implications of IT are suggested based on the results.