Effect of preservative‐free tafluprost on intraocular pressure,pupil diameter,and anterior segment structures in normal canine eyes          下载免费PDF全文

Jiyoon Kwak  Seonmi Kang  Eui Ri Lee  Sangwan Park  Sungwon Park  Eunjin Park  Jaegook Lim  Kangmoon Seo 《Veterinary ophthalmology》2017,20(1):34-39

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Sorption of Pb in chemical and particle-size fractions of soils with different physico-chemical properties     

Park  Hyun-Jung  Park  Hyun-Jin  Yang  Hye In  Park  Se-In  Lim  Sang-Sun  Kwak  Jin-Hyeob  Lee  Goon-Taek  Lee  Sang-Mo  Park  Man  Choi  Woo-Jung 《Journal of Soils and Sediments》2019,19(1):310-321

Journal of Soils and Sediments - Lead (Pb) sorption capacity (PbSmax) and distribution in chemical and particle-size fractions of six soils with different physico-chemical properties were...  相似文献   

Pathology of Mycoplasma serogroup 11 induced mastitis in sheep     

D. KUMAR  PP GUPTA  JS RANA  HS BANGA 《Australian veterinary journal》1993,70(2):70-71

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Effects of Gonadotrophin Releasing Hormone Administration on the Pituitary-Ovarian Axis in Anoestrous vs Ovariectomized Bitches     

JJCWM Buijtels  NJ Beijerink  HS Kooistra  SJ Dieleman  AC Okkens 《Reproduction in domestic animals》2006,41(6):555-561

The aim of this study was to determine the effects of gonadotrophin releasing hormone (GnRH) administration on the plasma concentrations of reproductive hormones in intact and ovariectomized (OVX) bitches. Therefore, blood samples were collected at multiple times before and after the administration of 10 microg/kg GnRH (Fertagyl)) for the determination of the plasma concentrations of luteinizing hormone (LH), oestradiol, progesterone and testosterone in six anoestrus and in six OVX bitches. The mean plasma LH concentrations before and 60 min after GnRH administration were significantly lower in the anoestrous bitches than in the OVX bitches. In both groups GnRH administration resulted in a significant increase in the plasma LH concentration. The highest plasma LH concentrations were found at 10 min after GnRH administration and these values did not differ significantly between the two groups. Only in the anoestrous bitches a significant increase in plasma oestradiol concentrations was found after GnRH administration and these values were significantly higher than those in the OVX bitches. The plasma concentrations of progesterone and testosterone were low (close to or below the limit of quantitation) both before and after GnRH administration and the differences between anoestrous and OVX bitches were not significant. It can be concluded that (i) basal plasma LH concentration is significantly higher in OVX bitches than in anoestrous bitches, (ii) plasma LH concentration increases after GnRH administration in both anoestrous and OVX bitches, (iii) GnRH administration causes a significant rise in plasma oestradiol concentration only if ovarian tissue is present and (iv) measurement of plasma progesterone and testosterone concentrations before and after GnRH administration does not aid in distinguishing between anoestrous and OVX bitches. The results of this study may provide a basis for the diagnosis of remnant ovarian tissue and verification of neuter status in the bitch.  相似文献   

Synthesis and testing of novel alternative oxidase (AOX) inhibitors with antifungal activity against Moniliophthora perniciosa (Stahel), the causal agent of witches' broom disease of cocoa,and other phytopathogens     

Mario RO Barsottini  Brbara A Pires  Maria L Vieira  Jos GC Pereira  Paulo CS Costa  Jaqueline Sanit  Alessandro Coradini  Fellipe Mello  Cidnei Marschalk  Eder M Silva  Daniele Paschoal  Antonio Figueira  Fbio HS Rodrigues  Artur T Cordeiro  Paulo CML Miranda  Paulo SL Oliveira  Maurício L Sfora  Marcelo F Carazzolle  Silvana A Rocco  Gonalo AG Pereira 《Pest management science》2019,75(5):1295-1303

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In vitro study of microencapsulated isoflavone and beta-galactosidase     

Kim NC  Jeon BJ  Ahn J  Kwak HS 《Journal of agricultural and food chemistry》2006,54(7):2582-2586

This study was designed to find the optimum conditions for isoflavone or beta-galactosidase microencapsulation and to examine the release efficiency of microcapsules in simulated gastrointestinal conditions. Coating materials were either medium-chain triacylglycerol (MCT) or polyglycerol monostearate (PGMS). The highest rate of microencapsulation was found at 15:1 (w/w) ratio of MCT to isoflavone or beta-galactosidase as 70.2 or 75.4%, respectively. When PGMS was used as the coating material, 91.5% beta-galactosidase was microencapsulated with 15:1 mixture (w/w). In vitro study, less than 6.3-9.3% of isoflavone was released in simulated gastric fluid (pH 2-5) during 1 h incubation. Comparatively, isoflavone release increased dramatically to 87.8% at pH 8 for 1 h incubation in simulated intestinal fluid and was maintained thereafter. The release of beta-galactosidase showed a similar trend to that of isoflavone. It appeared in the range of 12.3-15.2% at pH 2-5; however, it increased significantly to 80.6% as the highest value at pH 8. Among the released isoflavones, 53.5% was converted into the aglycone form of isoflavone at pH 8 for 3 h incubation. The present study indicated that isoflavone or beta-galactosidase could be microencapsulated with fatty acid esters and released effectively in simulated intestinal condition.  相似文献   

Detection of nutrient elements and contamination by pesticides in spinach and rice samples using laser-induced breakdown spectroscopy (LIBS)     

Kim G  Kwak J  Choi J  Park K 《Journal of agricultural and food chemistry》2012,60(3):718-724

The laser-induced breakdown spectroscopy (LIBS) technique was applied to quantify nutrients (Mg, Ca, Na, and K) in spinach and rice and to discriminate pesticide-contaminated products in a rapid manner. Standard reference materials (spinach leaves and unpolished rice flour) were used to establish a relationship between LIBS intensity and the concentration of each element (Mg, Ca, Na, and K) (i.e., calibration line). The limits of detection (LODs) for Mg, Ca, Na, and K were found to be 29.63, 102.65, 36.36, and 44.46 mg/kg in spinach and 7.54, 1.76, 4.19, and 6.70 mg/kg in unpolished rice, respectively. Concentrations of those nutrient elements present in spinach and unpolished rice from a local market were determined by using the calibration lines and compared with those measured with ICP-OES, showing good agreement. The data also suggested that the LIBS technique with the chemometric method (PLS-DA) could be a great tool to distinguish pesticide-contaminated samples from pesticide-free samples in a rapid manner even though they have similar elemental compositions. Misclassification rates were found to be 0 and 2% for clean spinach and pesticide-contaminated spinach, respectively, by applying the PLS-DA model established from the training set of data to predict the classes of test samples.  相似文献   

Phosphorus uptake and use efficiency in different varieties of bread wheat (Triticum Aestivum L)     

HS Gill  Anoop Singh  SK Sethi  RK Behl 《Archives of Agronomy and Soil Science》2013,59(6):563-572

Thirty spring wheat varieties were evaluated and classified into eight different groups on the basis of their grain yield performance and phosphorus (P) uptake using Metroglyph analysis. Significant variability was observed for grain and biomass yield, plant height, P content in grain and straw, total P uptake and phosphorus harvest index and P use efficiency traits. Varieties WH 711 and PBW 343 exhibited high grain yield as well as high P uptake (HGY-HP). WH 283 and UP 2425 with high index score of 19 and 16 respectively, constituted the high grain yield-medium P uptake (HGYMP) group. Both these varieties, though had similar grain yield of 5348 kg/ha, but WH 283 (12.64 kg/ha) utilized much lower P as compared to UP 2425 (16.94 kg/ha). Moreover, WH 283 (81.64) also showed higher values for phosphorus harvest index (PHI) than UP 2425 (67.88%). P uptake of WH 283 was comparable with that of Raj 3765 (10.78 kg/ha) and grouped into high grain yield and low P uptake (HGY-LP) group. The grain yield performance of these two varieties with a relatively low P uptake is reflected in their high index score for P use efficiency thus, earmarking them for low P regimes. Variety HW 2006, despite low grain yields of 4665 kg/ha had high index score of 16 due to its higher value for Phosphorus Biological (PBER) and Economic Yield (PEER) Efficiency Ratio as it has effected least (7.18 kg/ha) P mobilization. In addition high P translocation in the grain was also observed for this variety. Inter-mating of genotypes like HW 2006, UP 2338 and HW 2016 with those belonging to HGY-HP (PBW 343 and WH 711) and HGY-LP (Raj 3765 and WH 283) would be an ideal strategy to develop the cultivars for efficient phosphorus use.  相似文献   

Soil and plant nitrogen pools in paddy and upland ecosystems have contrasting δ15N     

Sang-Sun Lim  Jin-Hyeob Kwak  Kwang-Seung Lee  Scott X. Chang  Kwang-Sik Yoon  Han-Yong Kim  Woo-Jung Choi 《Biology and Fertility of Soils》2015,51(2):231-239

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Modular microcomputer software to estimate fish population parameters, production rates and associated variance   总被引：1，自引：0，他引：1  

T. J. Kwak 《Ecology of Freshwater Fish》1992,1(1):73-75

Abstract– Microcomputer software to estimate fish population parameters, production rates, and associated variances was developed using established procedures. Pop/Pro Modular Statistical Software is a series of portable programs written in English that run on Macintosh^(R) or IBM^(R) (and compatible) computers. Population parameters can be estimated using either a single-census mark-recapture method or a removal method. Production and component parameters can be estimated with either the instantaneous growth rate method or the increment summation method. Output may be stratified by fish length, age or sampling interval and includes variance estimates for all parameters. The software was developed for use with fish data but may be applicable to other taxa.  相似文献