Anticariogenic activity of some tropical medicinal plants against Streptococcus mutans     

Hwang JK  Shim JS  Chung JY 《Fitoterapia》2004,75(6):596-598

The methanol extracts of five tropical plants, Baeckea frutescens, Glycyrrhiza glabra, Kaempferia pandurata, Physalis angulata and Quercus infectoria, exhibited potent antibacterial activity against the cariogenic bacterium Streptococcus mutans. In particular, G. glabra, K. pandurata and P. angulata conferred fast killing bactericidal effect against S. mutans in 2 min at 50 microg/ml of extract concentration.  相似文献   

Reproductive Performance and Reconception of Nellore Cows According to Their Pure‐ or Cross‐Bred Calves          下载免费PDF全文

WB Rodrigues  FS Wechsler  E Nogueira 《Reproduction in domestic animals》2015,50(3):431-436

The objective of the present research was to evaluate the effect of a calf's genetic group on the productive and reproductive efficiency of its Nellore dam. Fixed‐time artificial insemination was applied to 800 cows using semen extracted from Nellore, Simmental and Angus Red bulls. Four hundred eleven cows calved, producing 119 Nellore, 103 ½Simmental–½Nellore and 189 ½Nellore–½Angus Red calves. The second mating period, which paired Nellore cows with Simmental bulls, was initiated 10 days after parturitions began and lasted for 5 months. Based on the two successive parturitions, the cumulative parturition rate for calving periods of 3, 4 and 5 months was calculated. Although no significant difference was observed for birth weight among the genetic groups, cross‐bred calves weighed, on average, 10% more than did pure‐bred calves at the age of 205 days. Nellore dams experienced a gestation period that was 7 days longer than did the cross‐bred dams, and the former showed a higher parturition rate at 90 and 120 days of the calving season, but not at 150 days (calving rates of 80.6, 76.4 and 76.2% for mothers of Nellore, ½Nellore–½Angus Red and ½Nellore–½Simmental, respectively, p > 0.05). At 90 and 120 days, Nellore dams produced more kg of calf per mated dam. In conclusion, in a short breeding season, Nellore dams nursing pure‐bred Nellore calves were found to have a higher biological efficiency compared with Nellore dams nursing cross‐bred calves.  相似文献   

Functional characteristics of porcine peripheral T cells stimulated with IL-2 or IL-2 and PMA     

In Su Cheon  Sung-Moo Park  Hye Jin Lee  Ji Eun Hong  Sang Yun Ji  Byoung-Shik Shim  Kwang Ho Kim  Pil Seung Heo  Yoo Yong Kim  Hyun Jung Jung  Hakhyun Ka  Seung Hyun Han  Manki Song  Cheol-Heui Yun 《Research in veterinary science》2014

In human or mouse, mature T cells express either CD4 or CD8, resulting in different functions in the periphery. Interestingly, porcine CD4 and CD8 double positive (DP) T cells are present in the blood, and their proportions change from youth to adulthood. However, the features of these cells in swine are poorly understood. We investigated the fate of porcine peripheral T cells based on their functional characteristics, including proliferation and the expression of CD4 and CD8 co-receptors. The results showed that all the populations changed their CD8 expression in a time-dependent manner and porcine T cells had different proliferative pattern from human T cells. The results further revealed that Th2 cytokines were increased later in porcine T cells compared to human T cells upon stimulation with IL-2 + PMA. Collectively, we found that the fate of porcine peripheral T cells is different from that of human T cells, and the changes occur in a time- and stimulation-dependent manner.  相似文献   

Physiological and biochemical consequences of electroimobilisation in conscious sheep     

TR KUCHEL  LE MATHER†  WB RUNCIMAN†  RJ CARAPETIS† 《Australian veterinary journal》1990,67(2):33-38

An electroimmobilisation device has been developed to facilitate the automated shearing of sheep, but there is little information on its effects on the body. We have studied its effects on the cardiovascular system and on intermediary metabolism in sheep. Electroimmobilisation caused statistically significant increases in mean arterial pressure, heart rate, cardiac output, renal and hepatic and hindquarter glucose and lactate flux, organ and whole body oxygen flux, hindquarter blood flow and core temperature and decreases in arterial and posterior vena cava blood pH, renal and hepatic blood flow and PaCO2. Notably, no change occurred in PaO2. The metabolic changes demonstrated the capacity of sheep to respond to the increased muscular and cardiovascular work induced by electroimmobilisation. Pulmonary function was not compromised during electroimmobilisation as judged from blood gas changes, and the acid/base changes were rapidly reversed after electroimmobilisation. The recovery to control conditions for all perturbations generally took no longer than 30 min, consistent with a rapid and physiologically adequate reversal by the animal's homeostatic mechanisms.  相似文献   

Pharmacokinetic variables of moxifloxacin in healthy male camels following intravenous and intramuscular administration     

Abd El-Aty AM  Goudah A  Shah SS  Shin HC  Shimoda M  Shim JH 《Journal of veterinary pharmacology and therapeutics》2007,30(6):586-591

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Genome-wide analysis of mutations in a dwarf soybean mutant induced by fast neutron bombardment     

Won Joo Hwang  Moon Young Kim  Yang Jae Kang  Sangrea Shim  Minviluz G. Stacey  Gary Stacey  Suk-Ha Lee 《Euphytica》2015,203(2):399-408

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Imaging of intermittency in ripple-wave turbulence     

WB Wright  R Budakian  DJ Pine  SJ Putterman 《Science (New York, N.Y.)》1997,278(5343):1609-1612

The dynamics of a fluid surface filled with high-amplitude ripples were studied with a technique (diffusing light photography) that resolves the height at all locations instantaneously. Even when nonlinearities are strong enough to generate a (Kolmogorov) cascade from long wavelength (where energy is input) to shorter wavelength, the resulting turbulent state contains large coherent spatial structures. The appearance of these structures in a thermal equilibrium state (with the same average energy) would be highly improbable.  相似文献   

担子菌中牛磺酸的检测   总被引：2，自引：0，他引：2  

Shim.M.J Park.T 《安徽农业大学学报》1999,26(3):302-305

利用基于离子交换色谱原理氨基酸自动分析仪检测了一些常见食用菌中牛磺酸的含量。牛磺酸在磷酸丝氨酸及磷酸乙醇胺洗脱液中经色谱分析可得到清晰的对称峰。灵芝的牛磺酸含量为每100g干重含3.7～83umol。火菇在所检蘑菇中牛磺酸含量高,每100g湿重含（83.2±6.6)umol,与陆生植物相近。双孢蘑菇与香菇的牛磺酸含量相对较高,每100g湿重含量约49～55umol,牡蛎蘑菇及糙皮侧耳的鲜重含量分别为（8.9±0.712)umol、（3.7±0.3)umol,木耳及甘露地衣的干重含量分别为（19.5±2.1)umol、（9.3±1.5)umol。高牛磺酸、无胆固醇的蘑菇有望作为低胆甾醇类食物的替代品。  相似文献   

Synchronized oscillation in coupled nanomechanical oscillators     

Shim SB  Imboden M  Mohanty P 《Science (New York, N.Y.)》2007,316(5821):95-99

We report measurements of synchronization in two nanomechanical beam oscillators coupled by a mechanical element. We charted multiple regions of frequency entrainment or synchronization by their corresponding Arnold's tongue diagrams as the oscillator was driven at subharmonic and rational commensurate frequencies. Demonstration of multiple synchronized regions could be fundamentally important to neurocomputing with mechanical oscillator networks and nanomechanical signal processing for microwave communication.  相似文献   

Modeling the localized-to-itinerant electronic transition in the heavy fermion system CeIrIn5     

Shim JH  Haule K  Kotliar G 《Science (New York, N.Y.)》2007,318(5856):1615-1617

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