Mercerization in degassed sodium hydroxide solution     

Seung Il Kim  Eui So Lee  Heung Soo Yoon 《Fibers and Polymers》2006,7(2):186-190

The application of a degassing system to mercerization process was investigated. It was found that the physical properties of cotton fabrics mercerized in the degassed NaOH solution were superior to those mercerized in NaOH solution. The degree of penetration of the degassed water was examined by measuring wicking height. The wicking height in the degassed water without the wetting agent is higher than that of the saturated water with 0.1 % of wetting agent.  相似文献   

Detection of porcine circovirus type 2 in feces of pigs with or without enteric disease by polymerase chain reaction.   总被引：1，自引：0，他引：1  

Jeong S Yang  Dae S Song  So Y Kim  Kwang S Lyoo  Bong K Park 《Journal of veterinary diagnostic investigation》2003,15(4):369-373

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Some problems of testing foot-and-mouth disease vaccines. I. Innocuity testing     

T Soós 《Acta veterinaria Hungarica》1987,35(3):319-330

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Low Rate of Methicillin‐resistant Coagulase‐positive Staphylococcal Colonization of Veterinary Personnel in Hong Kong     

M. V. Boost  S. Y. C. So  V. Perreten 《Zoonoses and public health》2011,58(1):36-40

Elevated rates of methicillin‐resistant Staphylococcus aureus (MRSA) carriage have been reported in veterinary personnel, suggesting an occupational colonization risk. Hong Kong veterinary personnel (n = 150) were sampled for coagulase‐positive staphylococci (CPS) nasal colonization. Risk factors for colonization were assessed by questionnaire. Isolates were identified and antibiotic susceptibility determined. All CPS isolates were investigated for mecA carriage, SCCmec type and PVL genes. Two subjects were colonized with methicillin‐resistant CPS: one with MRSA (spa type t002 (CC5), SCCmec type II) and one with methicillin‐resistant Staphylococcus pseudintermedius (MRSP) (MLST type ST71, SCCmec type II‐III). MLST type ST71 S. pseudintermedius strain is the predominant MRSP clone circulating in dogs in Europe and in Hong Kong. The low MR‐CPS colonization rate may be associated with low levels of large animal exposure or low rates of MRSA colonization of companion animals in Hong Kong. Colonization with non‐aureus CPS, which may cause human infection, must also be considered in veterinary personnel.  相似文献   

A mid-IR multivariate analysis study on the gross calorific value in longleaf pine: impact on correlations with lignin and extractive contents     

Chi-Leung So  Thomas L. Eberhardt 《Wood Science and Technology》2013,47(5):993-1003

Twenty 70-year-old longleaf pine trees from a spacing, thinning, and pruning study were harvested, from which samples were analyzed for gross calorific value (GCV). A strong correlation was found between GCV and extractive contents for the unextracted wood samples. Although lignin content should impact GCV, no correlation was found between the variation in GCV with lignin content for the extractive-free wood samples. Mid-IR spectroscopy coupled with multivariate analysis provided strong correlations between the mid-IR-predicted and calorimetry-determined values for the unextracted wood samples. Plotting the regression coefficients for GCV and extractive contents showed that the same mid-IR bands were responsible for the strength of these models. Spectral differences were observed between the different extract samples, and relative peak intensities appeared to be dependent upon the extractive contents from the wood samples. Thus, models were also built based on the corresponding wood extractive contents using the actual extracts. These provided good correlations, suggesting a proportional change in extractive compositions coinciding with the total amount of extractives present in the unextracted wood samples.  相似文献   

Iscom of viral envelope proteins protects against Aujeszky's disease   总被引：3，自引：0，他引：3  

B Morein  S Belák  T Soós  M Rusvai  B S McGwire  K Bognár 《Veterinary microbiology》1989,20(2):143-154

An immunostimulating complex (iscom) containing the envelope proteins of pseudorabies virus (PRV) was prepared and its efficacy was evaluated in two experiments on sheep. In the first experiment, sheep were intramuscularly (i.m.) or intradermally (i.d.) vaccinated with PRV iscom doses varying between 1 and 81 micrograms. The vaccination was repeated on Day 21 and the animals were exposed to challenge infection by subcutaneous inoculation of 1000 TCID50 of the virulent Phylaxia strain on Day 35 after first vaccination. In the second experiment, sheep were i.m. vaccinated with single doses of iscom varying between 1 and 27 micrograms and challenge-infected on Day 14. It was found that: (1) the i.d. administration of PRV iscom has no advantage over i.m. administration (2); a single dose of greater than or equal to 3 micrograms of PRV iscom provided protection against the disease. In immunoblots, viral proteins of molecular masses 120, 109, 55, 53 and 32 kDa were detected with the sera obtained from iscom-vaccinated and subsequently challenge-infected sheep, but not with sera from sheep which were iscom-vaccinated only. The above findings indicated that: (1) by using iscom technology, potent subunit vaccines can be prepared to prevent Aujeszky's disease; (2) the selective incorporation of viral envelope proteins into iscoms gives the opportunity to discriminate between iscom-vaccinated and naturally infected animals.  相似文献   

布氏姜片虫排泄分泌抗原的提取及其免疫化学特性研究     

钱旻  郎所 《中国兽医寄生虫病》1993,1(1):23-26

利用体外无菌培养技术，制备了布氏姜片虫的排泄分泌抗原(ES)。经梯度PAGE和SDS-PAGE分别分离出7条蛋白质区带和9条多肽区带，其中包括1条糖蛋白和1条糖脂蛋白，说明布氏姜片虫ES含复杂的蛋白组分。免疫电泳、免疫扩散即迹试验表明，布氏姜片虫ES含有较多与虫体抗原相同的抗原成分，也含有少数与虫卯抗原相同的抗原成分。  相似文献   

Effects of classical swine fever virus infection on the porcine leukocyte subsets     

Soós P  Schubert HJ  Depner KR 《Acta veterinaria Hungarica》2000,48(1):35-42

The effects of classical swine fever (CSF) virus infection on the porcine leukocyte subsets were investigated by flow cytometry in acute, chronic and convalescent forms of the disease. The virus antigen could be first detected in the monocytes on postinfection (p.i.) day 10 while in the lymphocytes on p.i. day 13. It could be established that the ratio of CD6+ cells decreased until p.i. day 6, but afterwards it started to increase and reached different values. The CD4+CD8+, the CD8+ and the CD6- cells were obviously higher virus positive than the CD4+ and the CD4-CD8-subsets, but essentially all subsets could be infected. The ratio of CD8+ cells increased during the disease, while the number of double positive cells decreased, and that of the CD4+ cells was variable. The viral antigen could be detected in a lower percentage of the CD4+CD8+, CD8+, CD6+ and CD6- cells of the pigs affected with the chronic form of the disease than in those with the acute form. During the experiments no viral antigen could be detected in the leukocytes of the pig that became convalescent, though the changes in its leukocyte subsets were very similar to those seen in pigs in which the viral antigen could be detected. The studies have revealed that essentially all leukocyte subsets can be infected with the CSF virus, but in very different amounts.  相似文献   

Selecting and applying quantification models for ecosystem services to forest ecosystems in South Korea     

Hyun-Ah Choi  Woo-Kyun Lee  Cholho Song  Nicklas Forsell  Seongwoo Jeon  Joon Soon Kim  So Ra Kim 《林业研究》2016,27(6):1373-1384

There is growing interest in using ecosystem services to aid development of management strategies that target sustainability and enhance ecosystem support to humans. Challenges remain in the search for methods and indicators that can quantify ecosystem services using metrics that are meaningful in light of their high priorities. We developed a framework to link ecosystems to human wellbeing based on a stepwise approach. We evaluated prospective models in terms of their capacity to quantify national ecosystem services of forests. The most applicable models were subsequently used to quantify ecosystem services. The Korea Forest Research Institute model satisfied all criteria in its first practical use. A total of 12 key ecosystem services were identified. For our case study, we quantified four ecosystem functions, viz. water storage capacity in forest soil for water storage service, reduced suspended sediment for water purification service, reduced soil erosion for landslide prevention service, and reduced sediment yield for sediment regulation service. Water storage capacity in forest soil was estimated at 2142 t/ha, and reduced suspended sediment was estimated at 608 kg/ha. Reduced soil erosion was estimated at 77 m³/ha, and reduced sediment yield was estimated at 285 m³/ha. These results were similar to those reported by previous studies. Mapped results revealed hotspots of ecosystem services around protected areas that were particularly rich in biodiversity. In addition, the proposed framework illustrated that quantification of ecosystem services could be supported by the spatial flow of ecosystem services. However, our approach did not address challenges faced when quantifying connections between ecosystem indicators and actual benefits of services described.  相似文献   

Analysis of water balance by surface–groundwater interaction using the SWAT model for the Han River basin,South Korea     

So Ra Ahn  Seong Joon Kim 《Paddy and Water Environment》2018,16(3):543-560

The water balance and groundwater dynamics due to surface–groundwater interactions for watershed health assessment were investigated for the Han River basin (34,148 km²) of South Korea using the Soil and Water Assessment Tool (SWAT). The model was established considering 4 multipurpose dams and 3 multifunction weirs. The SWAT was spatially calibrated and validated using daily observed inflows for the dam (2005–2014) and weir (2012–2014) as well as evapotranspiration, soil moisture, and groundwater level data (2009–2013). The simulation results revealed the impact of surface–groundwater exchange fluxes on the water balance and baseflow by evaluating the vertical water budget and horizontal water transfer. Evapotranspiration in the surface and return flows from the shallow aquifer for the dry season was estimated to be 29 and 10% higher than for the wet season, respectively. Percolation’s role was also significant, providing approximately 24% of the annual groundwater recharge to shallow aquifers in the rainy season. On average, the February to August period (A) was characterized by a net flux of infiltration into the groundwater. For the September to January period (B), the proportion of groundwater flow into the river of the basin was nearly balanced by a slight increase in surface water infiltration. During period A of average surface water infiltration into the groundwater, the net groundwater recharge was positive and up to 20% of the infiltration during this period resulted from groundwater recharge. These results showed that groundwater recharge is strongly affected by the surface water and groundwater interactions.  相似文献