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101.
Jae-Won Byun Soon-Seek Yoon Gye-Hyeong Woo Byeong Yeal Jung Yi-Seok Joo 《Journal of veterinary science (Suw?n-si, Korea)》2009,10(3):269-271
An outbreak of fatal hemorrhagic pneumonia with 70~90% morbidity and 50% mortality occurred in an animal shelter in Yangju, Gyeonggi Province, Korea. Clinically, the affected dogs showed severe respiratory distress within 48 h after arriving in the shelter. The dead were found mainly with nasal bleeding and hematemesis. At necropsy, hemothorax and hemorrhagic pneumonia along with severe pulmonary consolidation was observed, though histopathological analysis showed mainly hemorrhagic bronchopneumonia. Lymphoid depletion was inconsistently seen in the spleen, tonsil and bronchial lymph node. Gram-positive colonies were shown in blood vessels or parenchyma of cerebrum, lung, liver, spleen, and kidney. Also, Streptococcus (S.) equi subsp. zooepidemicus was isolated from the various organs in which the bacterium was microscopically and histologically detected. In addition, approximately 0.9 Kb specific amplicon, antiphagocytic factor H binding protein, was amplified in the bacterial isolates. In this study, we reported an outbreak of canine hemorrhagic bronchopneumonia caused by S. equi subsp. zooepidemicus in an animal shelter in Yangju, Korea. 相似文献
102.
A melt-process was used to prepare high molecular weight Poly(vinyl chloride) (PVC) films without the use of a conventional
plasticizer and heat stabilizer. Rigid PVC powder was swollen with dimethylformamide containing 4∼10 vol% water to reduce
its melting temperature. The swollen powder was pressed at a relatively low temperature of 75∼125 °C to form a film shape,
and then washed and dried. The visible light transmittance, X-ray diffraction, density and the tensile properties of the resulting
films were examined to estimate the success or failure of film formation. The films could be produced by not only the melt-process
but also a compression-process using the rigid, highly swollen PVC powder. The resulting films had no voids, which are generally
observed in PVC products formed by a solution process. The minimum temperature for these processes decreased with decreasing
water content in the mixture: The minimum temperatures according to the water content in the mixture to produce faultless
films through the melt-process were 4 %–105 °C, 6 %–115 °C, 8 and 10 %–125 °C, while those through the compression process
were 4 %–95 °C, 6 and 8 %–105 °C, 10 %–115 °C. 相似文献
103.
In this study, micro-porous carboxymethyl cellulose (CMC) nonwovens were prepared by carboxymethylation of cellulose nonwovens
produced by a wet-laid process and their properties were investigated for potential applications as adhesion prevention barriers.
After carboxymethylation, the thickness and mean pore size of the cellulose nonwovens were increased, whereas their pore size
distribution became narrower. Tensile strength of cellulose nonwovens was proportional to basis weight, and dramatically increased
after carboxymethylation. CMC nonwovens immediately absorbed a phosphate buffered saline solution and showed swollen phase
within 1 min. It was found that the thickness and pore size distribution of CMC nonwovens could be easily controlled by the
wet-laid process. It is expected that the CMC nonwovens can be used as adhesion prevention barriers. 相似文献
104.
Multiple segmented reaches per subwatershed modeling approach for improving HSPF-Paddy water quality simulation 总被引:2,自引:0,他引:2
Ji-Hong Jeon Kyoung Jae Lim Chun G. Yoon Bernard A. Engel 《Paddy and Water Environment》2011,9(2):193-205
Reach segmentation influences predicted water quality concentrations in water quality modeling. Many lumped or semi-distributed
watershed models, including Soil and Water Assessment Tool (SWAT) and Hydrologic Simulation Program-Fortran (HSPF), simulate
stream/river water quality with a single segmented reach per subwatershed (SSRS) modeling approach. A multiple-segmented reaches
per subwatershed (MSRS) modeling approach was developed, and simulated BOD5 concentrations for this approach were compared with results from the SSRS modeling approach using the HSPF-Paddy model. The
SSRS modeling approach has potential systemic errors for predicting BOD5 concentration even when the model is well calibrated. When the point source was loaded at the most upstream location with
the same decay rate, the predicted BOD5 concentration using the SSRS modeling approach was higher compared with results for the MSRS modeling approach, and the difference
between two methods increases with increasing load and decay rate. When BOD5 was loaded more downstream, BOD5 concentration using the SSRS modeling approach was lower compared with results for MSRS modeling. For a case study, simulated
streamflow and BOD5 concentration for the SSRS and MSRS modeling approaches demonstrated good agreement with observed data. However, the estimated
decay rate for the SSRS modeling approach was smaller than that for the MSRS modeling approach because BOD decays through
total volume in the SSRS modeling approach, although BOD may be loaded anywhere in the reach. The MSRS modeling approach can
minimize systematic errors and provide more detailed variation of water quality concentrations along a river length. The MSRS
modeling approach does not always need to be applied to all subwatersheds but is recommended for reaches significantly polluted
by point source pollution. 相似文献
105.
Methyl jasmonate alleviated salinity stress in soybean 总被引:1,自引:0,他引:1
Ji Young Yoon Muhammad Hamayun Su-Kyung Lee In-Jung Lee 《Journal of Crop Science and Biotechnology》2009,12(2):63-68
We studied the role of methyl jasmonate (MeJA) in alleviating NaCl-induced salt stress on soybean growth and development in
hydroponics medium. Soybean seedlings were exposed to 60 mM NaCl stress for 2 weeks, 24 h after the application of 20 and
30 μM MeJA. NaCl stress induced a significant reduction in plant growth, endogenous bioactive gibberellin (GA4), photosynthesis
and transpiration rate, while a marked increase in the endogenous abscisic acid (ABA) and proline contents were recorded.
MeJA application greatly mitigated the adverse effects of NaCl on soybean growth and endogenous hormones. MeJA significantly
increased ABA levels, while the endogenous amount of GA4 was reduced by the application of NaCl. Our study revealed that MeJA
counteracted the negative effects of NaCl stress on plant growth, chlorophyll content, leaf photosynthetic rate, leaf transpiration
rate, and proline content. 相似文献
106.
Vanessa Dias Capriles Eveline Lopes Almeida Reinaldo Eduardo Ferreira Jos Alfredo Gomes Arêas Caroline Joy Steel Yoon Kil Chang 《Cereal Chemistry》2008,85(5):614-618
The sum of wheat flour and corn starch was replaced by 10, 20, or 30% whole amaranth flour in both conventional (C) and reduced fat (RF) pound cakes, and the effects on physical and sensory properties of the cakes were investigated. RF presented 33% fat reduction. The increasing amaranth levels darkened crust and crumb of cakes, which decreased color acceptability. Fresh amaranth‐containing cakes had similar texture characteristics to the controls, evaluated both instrumentally and sensorially. Sensory evaluation revealed that replacement by 30% amaranth flour decreased C cakes overall acceptability scores, due to its lower specific volume and darker color. Amaranth flour levels had no significant effect on overall acceptability of RF cakes. Hence, the sum of wheat flour and corn starch could be successfully replaced by up to 20% amaranth flour in C and up to 30% in RF pound cakes without negatively affecting sensory quality in fresh cakes. Moisture losses for all the cakes were similar, ≈1% per day during storage. After six days of storage, both C and RF amaranth‐containing cakes had higher hardness and chewiness values than control cakes. Further experiments involving sensory evaluation during storage are necessary to determine the exact limit of amaranth flour replacement. 相似文献
107.
Safety evaluation of orally administered afoxolaner and milbemycin oxime in eight‐week‐old dogs 下载免费PDF全文
M. Drag J. Saik J. Harriman L. Letendre S. Yoon D. Larsen 《Journal of veterinary pharmacology and therapeutics》2017,40(5):447-453
The safety profile of afoxolaner (an isoxazoline molecule) when combined with milbemycin oxime (a macrocyclic lactone) was evaluated according to the regulatory requirements when administered six times orally in a soft chewable formulation at a dose of at least 1×, 3×, or 5× the maximum exposure dose in 8‐week‐old Beagle dogs. Thirty‐two healthy puppies (16 males and 16 females) were enrolled and allocated randomly to one of four treatment groups. Three doses were administered at 28‐day intervals (Days 0, 28, and 56), followed by three additional doses administered with 14‐day intervals (Days 84, 98, and 112). The study ended on Day 126. Treatment groups were as follows: Group 1: untreated, sham‐dosed control; Group 2: afoxolaner/milbemycin oxime chews administered at a dose of at least 5 and 1 mg/kg, respectively (1×); Group 3: afoxolaner/milbemycin oxime chews administered at a dose of at least 15 and 3 mg/kg, respectively (3); and Group 4: afoxolaner/milbemycin oxime chews administered at a dose of at least 25 and 5 mg/kg, respectively (5×). All dogs were examined for general health twice a day beginning on Day ‐14. Physical examinations, and blood collections for clinical pathology analysis and afoxolaner and milbemycin oxime plasma concentrations, were performed throughout the study. No afoxolaner/milbemycin oxime treatment‐related changes were observed in growth, physical variables, clinical pathology variables, or tissues examined histologically. No clinically relevant or statistically significant health abnormalities related to the administration of afoxolaner/milbemycin oxime were observed. No signs of macrocyclic lactone sensitivity were observed at any time during the study. Vomiting and diarrhea were observed sporadically across all groups including the controls. Based upon the results of this study, afoxolaner/milbemycin oxime soft chewables were shown to be safe when administered repeatedly at up to 5× the maximum exposure dose in dogs as young as 8 weeks of age. 相似文献
108.
Jundae Lee Jae Bok Yoon Jung-Heon Han Won Phil Lee Sang Hoon Kim Hyo Guen Park 《Euphytica》2010,173(1):55-61
Genic male sterility (GMS) has long been used as a tool for hybrid seed production in chili pepper (Capsicum annuum L.). We developed DNA markers linked to the GMS ms
3
gene in a segregating population using bulked segregant analysis (BSA) and amplified fragment length polymorphism (AFLP)
techniques. The segregating population was subjected to BSA-AFLP with 512 primer combinations. Three AFLP markers (Eagg/Mccc276, Eagc/Mctt178, and Ecag/Mtgc204) were identified as tightly linked to the ms
3
locus. Among them, we converted the AFLP marker Ecag/Mtgc204 to the cleavage amplified polymorphic sequence (CAPS) marker, named GMS3-CAPS, based on sequencing analysis of internal and
flanking regions for the markers between male-fertile and sterile plants. This marker will be useful for pepper breeding using
the GMS system. 相似文献
109.
Allosteric regulation of organometallic catalysts could allow for greater control over reactions. We report an allosteric supramolecular structure in which a monometallic catalytic site has been buried in the middle layer of a triple-layer complex. Small molecules and elemental anions can open and close this complex and reversibly expose and conceal the catalytic center. The ring-opening polymerization of ε-caprolactone can be turned on by the in situ opening of the triple-layer complex and then completely turned off by reforming it through the abstraction of Cl(-), the allosteric effector agent, without appreciable loss of catalytic activity. This process can regulate the molecular weights of the resulting polymers. 相似文献
110.
Woong Yoon Jung Min Ryu Min Young Lee Yong Ju Moon Sang Hun Lee Jae Hong Park Seung Pil Yun Min Woo Jang Sung Su Park Ho Jae Han 《Journal of veterinary science (Suw?n-si, Korea)》2010,11(3):185-189
Micropigs are the most likely source animals for xenotransplantation. However, an appropriate method for evaluating the lung of micropigs had not been established. Therefore, this study was performed to evaluate the feasibility of 64-channel multi-detector row computed tomography (MDCT) to measure the diameter of the pulmonary arteries and the lung volume in micropigs. The mean diameters of the trachea, and left and right bronchi were 1.6 ± 0.17, 1.18 ± 0.14, and 1.1 ± 0.11 cm, respectively. The mean diameters of the main, right, and left pulmonary arteries were 1.38 ± 0.09, 1.07 ± 0.26, and 0.98 ± 0.13 cm and the diameters of right, left, and common inferior pulmonary veins were 0.97 ± 0.20, 0.76 ± 0.20, and 1.99 ± 0.26 cm, respectively. The mean lung volume was 820.3 ± 77.11 mL. The data presented in this study suggest that the MDCT may be a noninvasive, rapid, and accurate investigational method for pulmonary anatomy in living lung donors. 相似文献