• 제목/요약/키워드: saline water

검색결과 751건 처리시간 0.034초

An Ileal Amino Acid Digestibility Assay for the Growing Meat Chicken-Effect of Feeding Method and Digesta Collection Procedures

  • Yap, K.H.;Kadim, I.T.;King, R.D.;Moughan, P.J.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제10권6호
    • /
    • pp.671-678
    • /
    • 1997
  • The objective was to evaluate method of feeding (free access or intubation), method of slaughter (carbon dioxide gas or barbiturate) and digesta flushing medium (distilled water or physiological saline), in the development of an ileal amino acid digestibility assay for 4 week-old broiler chickens. Three diets were used (commercial (C), semi-synthetic meat-and bone meal (MBM) or wheat (W)). For the coarser C and W diets but not for the MBM diet, feeding method had a significant effect on concentrations of chromium (Cr), nitrogen (N), acid detergent fibre (ADF) and neutral detergent fibre (NDF) in the crop contents at a set time after a meal. There appeared to be a selection of food particles under free-access feeding. For birds receiving the wheat diet there was an effect (p < 0.05) of sampling time after feeding on the concentrations of Cr, N, ADF and NDF/Cr in the crop contents. Flushing ileal digesta with distilled water or saline led to similar apparent ileal N digestibility coefficients. Birds given the MBM diet, and killed by inhalation of $CO_2$, had significantly (p < 0.05) lower apparent ileal N digestibility coefficients (73 versus 80%) than those killed by barbiturate overdose.

Anxiolytic-like effects of extracts from Albizzia julibrissin bark in the elevated plus- maze in rats

  • Ahn, Nam-Yoon;Jung, Ji-Wook;Oh, Hye-Rim;Lee, Bo-Kyung;Oh, Jin-Kyung;Cheng, Jae-Hoon;Ryu, Jong-Hoon
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
    • /
    • pp.212.1-212.1
    • /
    • 2003
  • The purpose of the this study was to characterize the putative anxiolytic-like effects of the aqueous extract of Albizzia julibrissin stem bark using the elevated plus maze (EPM) in rats. The water extract of Albizzia julibrissin was orally administered at 10, 50, 100 or 200 mg/kg to adult male SD rats, 1 h before behavioral evaluation in an EPM, respectively. Control rats were treated with an equal volume of saline, and positive control rats buspirone (1 mg/kg). Single or repeated treatment (for 7 days) of the water extract of Albizzia julibrissin (at 100 or 200 mg/kg) significantly increased time-spent and arm entries into the open arms of the EPM, and decreased time-spent and arm entries in the closed arms of the EPM versus saline controls (P < 0.05). (omitted)

  • PDF

해안간척지 토양의 생물학적 토성개선에 관한 연구 (제4보) 유기산첨가에 따르는 토양성분의 제 변화에 대하여 (Biological Improvement of Reclaimed Tidal Land Soil(IV) Changes of Saline Soil by addition of Organic Acids)

  • 홍순우
    • Journal of Plant Biology
    • /
    • 제12권4호
    • /
    • pp.9-18
    • /
    • 1969
  • In the previous paper(part III), a certian relationships between the changes of chlorinity and organic acid released from organic material were seemed to be concened to each other in saline soil suspension. Such a possibility had been a cause to take this experiments and this experiment was carried out under the treatment of organic acid crystal, oxalic acid and succinic acid, to the soil suspension(soil: water=20g:40cc) directly. The amount of organic acid treated to the suspension were related to the contents of organic material, as amount of organic acid per gram of organic material(391.76mg). The saline soil suspension were grouped and treated with the acids in order of 78.35mg(Group 1), 391.76mg(Group 2) 979.4mg(Group 3), and 1958.8mg(Group 4), respectively. Treated suspension had been incubated at room temperature and extract from suspension was used for analysis. Followings are summary of this report. 1) Changes of pH in soil suspension appeared a little increase after the treatment of organic acid until 168 hours. 2) Total acidity of soil suspension showed a variation, however, the values of total acidity appeared not to be increased or decreased during the period of experiment. 3) Sugar contents of soil suspension was increased until 168 hours after treatment. These results are similar tendency to the previous paper. 4) Addition of organic acid to soil suspension was confirmed not to be effective method for desalination from saline soil. Chlorinity of group 3 and 4 which were treated with high concentration of organic acid showed a decrease comparing to control group.

  • PDF

Fates of water and salts in non-aqueous solvents for directional solvent extraction desalination: Effects of chemical structures of the solvents

  • Choi, Ohkyung;Kim, Minsup;Cho, Art E.;Choi, Young Chul;Kim, Gyu Dong;Kim, Dooil;Lee, Jae Woo
    • Membrane and Water Treatment
    • /
    • 제10권3호
    • /
    • pp.207-212
    • /
    • 2019
  • Non-aqueous solvents (NASs) are generally known to be barely miscible, and reactive with polar compounds, such as water. However, water can interact with some NASs, which can be used as a new means for water recovery from saline water. This study explored the fate of water and salt in NAS, when saline water is mixed with NAS. Three amine solvents were selected as NAS. They had the same molecular formula, but were differentiated by their molecular structures, as follows: 1) NAS 'A' having the hydrophilic group ($NH_2$) at the end of the straight carbon chain, 2) NAS 'B' with symmetrical structure and having the hydrophilic group (NH) at the middle of the straight carbon chain, 3) NAS 'C' having the hydrophilic group ($NH_2$) at the end of the straight carbon chain but possessing a hydrophobic ethyl branch in the middle of the structure. In batch experiments, 0.5 M NaCl water was blended with NASs, and then water and salt content in the NAS were individually measured. Water absorption efficiencies by NAS 'B' and 'C' were 3.8 and 10.7%, respectively. However, salt rejection efficiency was 98.9% and 58.2%, respectively. NAS 'A' exhibited a higher water absorption efficiency of 35.6%, despite a worse salt rejection efficiency of 24.7%. Molecular dynamic (MD) simulation showed the different interactions of water and salts with each NAS. NAS 'A' formed lattice structured clusters, with the hydrophilic group located outside, and captured a large numbers of water molecules, together with salt ions, inside the cluster pockets. NAS 'B' formed a planar-shaped cluster, where only some water molecules, but no salt ions, migrated to the NAS cluster. NAS 'C', with an ethyl group branch, formed a cluster shaped similarly to that of 'B'; however, the boundary surface of the cluster looked higher than that of 'C', due to the branch structure in solvent. The MD simulation was helpful for understanding the experimental results for water absorption and salt rejection, by demonstrating the various interactions between water molecules and the salts, with the different NAS types.

A Efficacy of Ginseng radix on the Preservation of Spinal Bone Mineral Density and Bone Inorganic Substance of Oophorectomized Rats

  • Byun, Boo-hyeong;Seo, Bu-il
    • Preventive Nutrition and Food Science
    • /
    • 제8권3호
    • /
    • pp.245-248
    • /
    • 2003
  • This study was undertaken to investigate the effects of the Ginseng radix in osteoporosis of the oophorectomized rats. In this experiment, the rats were oophorectomized and administered the water extracts of the Ginseng radix. The spinal bone mineral density, calcium, phosphorus and ash weight of the bones were measured. The spinal bone mineral density was significantly increased in the ovariectomized (OVX)-Ginseng radix group at 8 weeks as compared to the OVX-saline group. Furthermore, the calcium and phosphorus contents of the femoral and fibula-tibia were significantly increased in the OVX-Ginseng radix group as compared to the OVX-saline group. The ash weights of the femoral and fibula-tibial bones were increases in the OVX-Ginseng Radix group, although it was not statistically significant. On reviewing these experiments, it appears that the Ginseng radix possess efficacy for the prevention of osteoporosis. Further study would be of value to confirm the efficacy of the Ginseng radix for the treatment and/or prevention of osteoporosis in humans.

Salt fog 내에서 옥외용 고분자 절연물의 내오손 성능 변화 (The Change of Contamination Performance of Polymeric Insulators for Outdoor Use)

  • 김정호;문중섭;박용판;김동명;원호상
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 1999년도 추계학술대회 논문집
    • /
    • pp.505-508
    • /
    • 1999
  • In this study, weight loss, ESDD, surface conductivity and leakage current were measured at the different saline solutions by salt fog method. The magnitude of leakage current was higher at higher conductivity of 2 S/m saline water, but weight loss ESDD and surface conductivity which are indices of degradation were lower. This is considered that the current includes mainly ohmic component which doesn\`t contribute to surface degradation. In addition, it is shown that FFT could be useful in measuring initial transition from hydrophobic to hydrophilic surface.

  • PDF

Effects of Oriental medicine on Osteoporosis in Ovariectomized Rats

  • Kim, Young-Ock;An , Deuk-Kyun;Lee, Hyun-Sun;Lee, Young-Ah;Kim, Yang-On;Song, Chang-Woo;Kim, Yang-Eon;Song, Chang-Woo
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
    • /
    • pp.233.2-233.2
    • /
    • 2003
  • This experiment study was carried out to prove the efficacy of Cheongpajeon(CPJ) extract in ovariectomized rats. 40 rats were divided into 4 groups, administrated saline after sham operation group(sham-op), administered saline after ovariectomy group(control), administered CPJ 1g/kg after ovariectomy group and administered Livial 0.042mg/kg after ovariectomy group(positive control). We examined the water extract of CPJ that is capable of affecting osteoblast proliferation using MG-63 and HOS-TE85. (omitted)

  • PDF

북서태평양에서의 북태평양중층수 (North Pacific Intermediate Water in the Northwest Pacific)

  • 양성기
    • 한국환경과학회지
    • /
    • 제3권3호
    • /
    • pp.229-239
    • /
    • 1994
  • 북태평양에 위치한 일본근애의 수괴분포에 대한 특성을 중층수에 중점을 두어 일본 해상 기상청이 관측한 정이 해양관측정선에서 얻어진 자료를 사용하여 검토하였다. 쿠로시오해역의 T-S도상에서 분산은 비교적 작게 나타나고 있다. 쿠로시오해역에서 고온, 고염분층에서부터 저온, 저염분측으로 이동하고 있다. 혼합해역에서 수형의 분한은 북으로 이동함에 따라 고염분측의 이동보다 저온, 저염분측으로 급격히 증가하고 있다. 염분극소층에서 해수의 써모스테릭 아노말리(thermosteric anomaly)는 해양관측정선이 북에서 남으로 이동함에 따라 감소하고 있다. 이러한 사실은 해수가 염분극소층을 따라 남하하는 것이 아니고, 염분극소층이 두 해수의 수직적인 경계임을 제시하고 있다. 여기서 오야시오수와 쿠로시오수의 두 전형적인 수괴를 정의하고 있따. 염분극소층보다 깊은 부분의 T-S도는 전형적인 오야시오수와 쿠로시오수가 같은 양으로 혼합하는데 대해, 염분극소층보다 상층에서는 전혀 다름 양상을 나타내고 있다. 염분극소층 해수의 써모스테릭 아노말리가 북에서 남으로 이동함에 따라 뚜렷이 감소해 간다. 이러한 사실은 왜 염분극소층에서 써모스테릭 아니말리의 값이 북에서 남쪽으로 이동함에 따라 감소하는지를 설명해 주고 있다.

  • PDF