• Title/Summary/Keyword: AM to PM

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Effect of acidified milk feeding on the intake, average daily gain and fecal microbiological diversity of Holstein dairy calves

  • Chen, Yong;Gao, Yan;Yin, Shuxin;Zhang, Shuai;Wang, Lu;Qu, Yongli
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.8
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    • pp.1265-1272
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    • 2020
  • Objective: To evaluate the effect of feeding acidified milk on the growth and fecal microbial diversity of dairy calves. Methods: Twenty healthy 3-day-old female Holstein calves with similar body weights were selected and randomly divided into two groups. One group was fed pasteurized milk (PM, Control), while the other was fed acidified milk (AM) ad libitum until weaned (day 60). The experiment lasted until day 180. Results: There was no difference in the nutritional components between PM and AM. The numbers of Escherichia coli and total bacteria in AM were lower than in PM. At 31 to 40 and 41 to 50 days of age, the milk intake of calves fed AM was higher than that of calves fed PM (p<0.05), and the solid feed intake of calves fed AM was higher than that of calves fed PM at 61 to 90 days (p<0.05). The average daily gain of calves fed AM was also higher than that of calves fed PM at 31 to 60, 61 to 180, and 7 to 180 days (p<0.05). The calves fed AM tended to have a lower diarrhea rate than those fed PM (p = 0.059). Bacteroides had the highest abundance in the feces of calves fed AM on day 50, while Ruminococcaceae_UCG_005 had the highest abundance in the feces of calves fed AM on day 90 and calves fed PM on days 50 and 90. At the taxonomic level, the linear discriminant analysis scores of 27 microorganisms in the feces of calves fed AM and PM on days 50 and 90 were higher than 4.0. Conclusion: Feeding AM increased calf average daily gain and affected fecal bacterial diversity.

Change of Oxygen Uptake, Heart Rate, Blood Pressure with Body Fat Rate in AM and PM (체지방에 따른 오전과 오후의 산소섭취량, 심박수, 혈압의 변화)

  • Lee, Jung-Sug;Kim, Seong-Suk;Kim, Hee-Eun
    • Fashion & Textile Research Journal
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    • v.7 no.3
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    • pp.321-326
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    • 2005
  • The purpose of this study was to investigate the effect of body fat on energy metabolic response and subjective sensations under the hot environment. Fifteen female university students volunteered as subjects. We organized subjects into three groups: low body fat group(group L : less than 20% of body fat), medium body fat group(group M : 20%~30% of body fat) and high body fat group(group H: more than 30% of body fat). The experiment was conducted with $32^{\circ}C$, 60%RH. The subjects repeated 'Exercise' and 'Rest' period. The results of this study are as follows ; The oxygen uptake value of AM is higher than PM. The value of group H is the highest in three fat groups. But it showed group L is the highest in oxygen uptake per weight. %body fat is the lower, oxygen uptake is the higher. In Calorie, group L has higher value in AM in than in PM. In M group and group H, a value of PM is higher than AM. In group H, difference of AM and PM is the highest. From a view point of three groups, a value of group H is the highest. This support that calorie increases as oxygen uptake increase. The heart rate values of group L and group H are the higher in AM than in PM. This support that heart rate was relation to oxygen uptake. In all three groups, the value of blood pressure is higher in AM than in PM. Subjective sensations of temperature sensation, thermal comfort, and wetness sensation are higher in Am than in Pm. This explains that subject sensations are similar to experimental data, such as oxygen uptake, heart rate, blood pressure. In oxygen uptake, heart rate and blood pressure, general tend to showed higher AM than PM. This showed that heart rate, oxygen uptake increase in AM, as blood pressure increase, too. From a view point of %body fat, group H is higher than the others in oxygen uptake, heart rate and blood pressure.

Estimation of Daily Milk Yields from AM/PM Milking Records

  • Lee, Deukhwan;Min, Hongrip
    • Journal of Animal Science and Technology
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    • v.55 no.6
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    • pp.489-500
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    • 2013
  • Daily milk yields on test days were estimated using morning or afternoon partial milk yields collected by official agencies and the accuracy of the estimates was determined. Test-day data for milk yields consisted of 3,156,734 records of AM/PM partial milking measurements of 255,437 milking Holstein cows from 3,708 farms collected from December 2008 to April 2013. A linear regression model (LRM) was applied to estimate daily milk yields using alternate AM/PM milk yield records within lactation stages, milking intervals, and parities on every daily milk yield. The alternate statistical approach was a non-linear hierarchical model (NHM) in which Brody's growth function was implemented by reflecting an animal's physiological milk production cycle. When compared with LRM, daily milk yields predicted by the NHM were assumed to be functionally related to day in milk (or lactation) stage, milking intervals, and partial milk yields. Since the results were in terms of accuracies based on comparisons of different statistical models, accuracies of estimates of daily milk yields by NHM were close to those determined by the LRM. The average of these accuracies was 0.94 for AM partial milk yields and 0.93 for PM partial milk yields for first calving cows. However, the accuracies of AM/PM milk yield estimations from cows under a calving stage higher than the first parity were 0.96 and 0.95, respectively. Correlations between the estimated daily milk yields and the actual daily milk yields ranged from 0.96~0.98. These accuracies were lower for unbalanced AM/PM milking intervals and the first calving cows. Overall, prediction of daily milk yields by NHM would be more appropriate than by LRM due to its flexibility under different milk yield-related circumstances, which provides an idea of the functional relationship between milking intervals and days in milk with daily milk yields from statistical viewpoints.

Theoretical Study of the HOMO-LUMO Gap, THG, DC-EFISHG, IDRI, and OKE in Polyenes (폴리엔의 HOMO-LUMO Gap, THG, DC-EFISHG, IDRI, OKE들에 대한 이론적 연구)

  • Kim, Tae-Won;Choi, U-Sung
    • Journal of the Korean Chemical Society
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    • v.40 no.8
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    • pp.579-584
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    • 1996
  • The HOMO-LUMO gap, and static and dynamic third-order polarizabilities for the polyenes are evaluated by means of the time-dependent Hartree Fock(TDHF) semiempirical PM3, AM1, MNDO, and MINDO/3 calculations. All calculations have performed on the series $C_2H_4$ to $C_{32}H_{34}$. The HOMO-LUMO gap increases in the order: MINDO/3> MNDO> PM3> AM1 levels. THG, DC-EFISHG, IDRI, and OKE for the various calculations show the order: AM1 > MNDO > PM3 levels. The various third-order effects for the polyenes have the following order: THG> DC-EFISHG> IDRI> OKE.

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CHARACTERISTICS OF STREPTOCOCCI AND ENTEROCOCCI ISOLATED FROM RUMEN OF MOUFLONS AND EUROPEAN BISONS

  • Laukova, A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.8 no.1
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    • pp.37-41
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    • 1995
  • Streptococci and enterococci, isolates from the rumen content of mouflons and European bisons were isolated. The total counts of these species reached the values(log 10 ${\pm}$ S.E.M.) $7.3{\pm}0.21$; $6.1{\pm}0.06$ bacteria per one ml of the rumen content in streptococci and $3.6{\pm}0.20$; $3.17{\pm}0.18$ bacteria per one ml of the rumen content in enterococci, Strains isolated were allotted to te species Streptococcus bovis(AM1, AM2, AM3, AM4), Enterococcus faecium(EH1, EFG2, EC3) and Enterococcus faecalis (EFA1, EFD2). Bactera presented belong to the strains with low urease and ${\alpha}$-amylase activities. The majority of isolates were polyresistant. Each strain produced bacteriocin - like substance with effect against at least of one of relatives species as indicators used. The most of inhibition zones were hazy with the width 2-6 mm in diameter.

A study on the high power amplifier Distortion analysis and Improving (전력 증폭기의 왜곡해석 및 개선에 관한 연구)

  • Ha, Sung-Jae;Hong, Ui-Seok
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.10A
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    • pp.1072-1077
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    • 2007
  • In this paper, a power amplifier intermodulation distortion has been analyzed to improve linearity and the analysis results are used to minimize the distortion for linear power amplifier design. The proposed design technique is which the intermodulation distortions of the final amplifier are removed by driver intermodulation distortions. This proposed technique is based on AM to AM distortion analysis using power series, and AM to PM distortion analysis results using Bessel function. To verify this technique implement a cellular HPA(High Power Amplifier) 30W. From the results of the implementation and measurement for the linear power amplifier, the spurious characteristic is shown as 50 dBc at 1.98 MHz with 30 W with 20FA. These results show that distortion characteristics are improved as much as 10 dB in spurious characteristic compared with conventional design method.

Effect of Vehicles and Enhancers on the in vitro Skin Penetration of Aspalatone and Its Enzymatic Degradation Across Rat Skins

  • Gwak, Hye-Sun;Chun, In-Koo
    • Archives of Pharmacal Research
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    • v.24 no.6
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    • pp.572-577
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    • 2001
  • The feasibility of skin penetration was studied for aspalatone (AM, acetylsalicylic acid maltol ester), a novel antithrombotic agent. In this studys hairless mouse dorsal skins were used as a model to select composition of vehicle and AM. Based on measurements of solubility and partition coefficient, the concentration of PC that showed the highest flux for AM across the hairless mouse skin was found to be 40%. The cumulative amount permeated at 48 h, however, appear inadequate, even when the PC concentration was employed. To identify a suitable absorption enhancer and its optimal concentration for AM, a number of absorption enhancers and a variety of concentration were screened for the increase in transdermal flux of AM. Amongst these, linoleic acid (LOA) at the concentration of 5% was found to have the largest enhancement factor (i.e., 132). However, a further increase in AM flux was not found in the fatty acid concentration greater than 5%, indicating the enhancement effect is in a bell-shaped currie. In a study of the effect of AM concentration on the permeation, there was no difference in the permeation rate between 0.5 and 1% for AM, below its saturated concentration. At the donor concentration of 2%, over the saturated condition, the flux of AM was markedly increased. A considerable degradation of AM was found during permeation studies, and the extent was correlated with protein concentrations in the epidermal and serosal extracts, and skin homogenates. In rat dorsal skins, the protein concentration decreased in the rank order of skin homogenate > serosal extract > epidermal extract. Estimated first order degradation rate constants were $6.15{\pm}0.14,{\;}0.57{\pm}0.02{\;}and{\;}0.011{\pm}{\;}0.004{\;}h^{-1}$ for skin homogenate, serosal extract and epidermal extract, respectively. Therefore, it appeared that AM was hydrolyzed to some extent into salicylmaltol by esterases in the dermal and subcutaneous tissues of skin. taken together, our data indicated that transdermal delivery of AM is feasible when the combination of PC and LOA is used as a vehicle. However, since AM is not metabolically stable, acceptable degradation inhibitors may be nervessary to fully realize the transdermal delivery of the drug.

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A Study on Nonlinear Distortion Analysis of Power Amplifier using the OFDM for WLAN System (무선랜 시스템에서 OFDM 방식을 사용한 전력증폭기의 비선형 왜곡분석에 관한 연구)

  • Oh Chung-Gyun;Kim Dong-Ok
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.2 no.4
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    • pp.42-51
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    • 2003
  • In this paper, we are going to analyze on relation of an output spectrum along phase distortion of power amplifier in wireless LAN system, and then considered an ACPR characteristic of power amplifier and consideration of an OFDM method for this. Also, we did implementation for OFDM modulation and transmission section of an IEEE 802.11a standard to have transmission speed of the maximum 54Mbps in order to know an OFDM modulation method and relation of non-linear characteristic of power amplifier. The non-linear characteristic of power amplifier did modeling with AM-to-AM and AM-to-PM, and we analyzed an output spectrum characteristic along phase distortion composed input signal supply for power amplifier. When output spectrum analysis results phase distortion increased, and an AM-to-PM characteristic of power amplifier in 5 degrees, the output spectrum was satisfied with a demand spectrum in P1 dB, but 10-20 degrees were able to confirm what cannot be satisfied with a demand spectrum in phase distortion. Also, an output spectrum of power amplifier by frequency re-growth generated by a non-linear characteristic of power amplifier did not satisfied in P1dE. therefore, a back-off value was requested according to an AM-to-PM distortion degree, and smaller back-off value were able to know what demand became in case of modulation section that used OFDM.

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Properties of Indoor Particles Collected in Japanese Homes

  • Ma, Chang-Jin;Kang, Gong-Unn;Kang, Chang-Hee
    • Asian Journal of Atmospheric Environment
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    • v.9 no.1
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    • pp.31-38
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    • 2015
  • Due to the heightened ambient $PM_{2.5}$ levels, the whole citizen of Japan, especially dwellers in Fukuoka Prefecture, start to make attention to the particulate matter (PM) of indoor environments. This study was aimed to thoroughly estimate the characteristics of indoor PM collected in five Japanese homes located in Fukuoka Prefecture. Simultaneous indoor measurements of PM were intensively made at five homes using filter-pack samplers, particle counters, and $PM_{2.5}$ monitors for a day in springtime, 2012. Major ionic and carbonaceous components were also analyzed. The time series fluctuation of PM number concentration was gradually decreased by 6 AM and then it was rapidly increased by 8 AM in all indoor sites. The maximum level of $PM_{2.5}$ was measured at the morning time (8 AM-9 AM) when the resident's behavior was fast and strenuous. The Indoor/Out-door (I/O) ratio for the giant PM larger than $5.0{\mu}m$ was 1.16. It was possible to identify PM types and estimate the resident's behavior through the comparison the theoretically calculated and the measured retention times for several types of PM in an indoor site. The theoretically reconstructed mass concentration of $PM_{2.0-0.3}$ suggested that the portion of $PM_{2.5}$ in indoor was quietly occupied by $PM_{0.3}$ or the PM inherently originated from indoor environment.

Residues of ampicillin in blood of cultured olive flounder by oral, injection and dipping administration (Ampicillin의 경구, 주사 및 약욕 투약에 따른 넙치 혈액에서의 잔류량 변화)

  • Jung, Sung Hee;Seo, Jung Soo;Park, Myoung Ae
    • Journal of fish pathology
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    • v.25 no.3
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    • pp.211-219
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    • 2012
  • The residue levels of ampicillin (AM) in cultured olive flounder, Paralichthys olivaceus (average 300g) at $20{\pm}1.0^{\circ}C$ were studied by oral, intramuscular and dipping administration (routes). The concentrations of AM in the plasma were determined by HPLC-UV detector. The average recoveries of AM in spiked samples between 0.01~10 ppm were ranging from 84.45% to 91.26% for plasma. The limit of detection for AM was 0.05 ppm by using this method. Plasma concentrations of AM were determined after oral dosage (10, 20 and 40 mg/kg body weight), intramuscular injection (5, 10 and 20 mg/kg body weight) and dipping (10, 20 and 40 ppm; 1 h). Samples were taken at 1, 3, 5, 10, 15, 24, 30, 48, 96, 144, 216, 264 and 360 h post-administration. In oral dosage of 10, 20 and 40 mg/kg, it's peak concentrations were $3.62{\pm}0.97$, $5.20{\pm}0.70$ and $11.18{\pm}0.87{\mu}g/ml$, respectively at 10 h post-administration, but AM was not measurable at 144, 360 and 360 h post-administration, respectively. In intramuscular injection of 5, 10 and 20 mg/kg, it's peak concentrations were $6.92{\pm}1.29{\mu}g/m1$, $9.89{\pm}2.22{\mu}g/ml$ and $19.85{\pm}2.97{\mu}g/ml$, respectively at 5 h post-administration, but AM was not measurable at 216, 264 and 264 h post-administration, respectively. In dipping of 10, 20 and 40 ppm, it's peak concentrations were $4.39{\pm}1.10$, $9.57{\pm}1.51$ and $11.61{\pm}1.92{\mu}g/ml$, respectively at 3 h post-administration, but AM was not measurable at 264, 264 and 360 h post-administration, respectively. Therefore, the plasma distribution and elimination levels of AM in olive flounder were dosage-dependant manner in all administration routes.