• 한국산림과학회지
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• 제9권1호
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• pp.75-80
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• 1969

우리나라 남부지방(南部地方)에 많이 분포(分布)되는 동백나무에 대(對)한 개화기인산(開花期燐酸) 효율(効率)과 체내행동(體內行動)에 대(對)하여 $P^{32}$ 표식인산(標識燐酸)을 사용(使用)하여 추적(追跡)하여 본바 다음과 같은 결과(結果)를 얻었다. 1. Flower-bud의 P%는 다른 부분(部分)의 약(約) 2배치(倍値)을 시현(示顯)하였고 Root와 Stem은 다같이 동일(同一)한 경시적(經時的) 변화상(變化相)을 나타내였다. 2. 체내이동(體內移動)은 전반적(全般的)으로 봐서 24시간(時間) 내(內)에 일어나는 것 같았으며 인산(燐酸) 함량비(含量比)는 Growing-Point와 Flower-bud가 나머지 3부분(部分)의 합계(合計)와 같은 절반치(切半値)를 점유(占有)하였다. 3. 동백나무의 부분별(部分別) 비방사능(比放射能)은 Growing-point가 가장 현저(顯著)하였고 48시간(時間) 이후(以後)에는 평균(平均) 80%이상(以上)을 해부분(該部分)이 차지하였으며 본(本) 실험(實驗) 결과(結果)에서 얻어진 인산(燐酸)의 효율도(効率度)(이용도(利用度))는 약(約) 19% 정도(程度)로 나타 났다.

• 한국환경과학회지
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• 제22권11호
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• pp.1383-1388
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• 2013

The pilot plant experiment was performed to investigate phosphorus and nitrogen removal from domestic wastewater by MLE process combined with aluminum corrosion reactor. When operating 0.5Q and 1Q to internal recycle and sludge recycle in the MLE process, the effluent $COD_{Mn}$ concentration of internal recycle 0.5Q were higher than internal recycle 1Q, the removal efficiency rates of $NH_3$-N in the internal recycle 0.5Q were was higher than internal recycle 1Q. Denitrification rates were about 86.8% in internal recycle and sludge recycle 0.5Q. When operating 0.5Q to internal recycle and sludge recycle in the MLE process, the removal efficiency rates of total nitrogen was the highest. The removal efficiency rates of total phosphorus was about 91.5% in the aluminum corrosion reactor.

• Journal of Applied Biological Chemistry
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• 제59권3호
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• pp.261-264
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• 2016

In soybean (Glycine max (L.) Merr.) seeds, phosphorus (P) is primarily stored in the form of phytate, which is generally indigestible by monogastric animals such as human, pig, poultry, and fish. Thus, this study was conducted to isolate soybean mutants with high available P. Inorganic P content was assessed in a total of 1,266 ethyl methanesulfonate (EMS) $M_4$ lines from the Pungsannamul cultivar. Among the tested lines, four EMS lines (PE379, PE432, PE2205, and PE2503) showed higher mean inorganic P ($1.21-1.56gkg^{-1}$) than did the Pungsannamul cultivar ($0.90gkg^{-1}$). Additionally, six EMS lines (PE718, PE828, PE1466, PE1552, PE3378, and PE3386) showed lower mean inorganic P ($0.38-0.60gkg^{-1}$). The high inorganic P mutants isolated in this study will be further investigated for phytate and total P levels. Moreover, the high and low inorganic P lines will be utilized in a future study of the biochemical pathway of phytate.

• 한국환경과학회지
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• 제22권3호
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• pp.379-383
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• 2013

This study was conducted to investigate the changes in nitrogen and soluble reactive phosphorus(SRP) contents from hanwoo manure using probiotics to feed and manure additives during 5 weeks. A total of 45 hanwoo(24 months old) with averaging $580{\pm}20$ kg in weight were randomly assigned to 3 dietary treatments with 3 replicates per treatment(5 hanwoo per pen, $5{\times}8m$). The treatment were supplemented, control, T1(10 kg roughage + 2 kg concentrate(2% probiotics as-fed basis)), and T2(10 kg roughage + 2 kg concentrate(2% probiotics as-fed basis) + 7 kg probiotics on the surface of hanwoo manure (top-dressing)). During the experimental period, there were statistically significant differences(P<0.05) in pH values at 3 and 5 weeks; TN contents at 5 weeks; and SRP contents at 5 weeks in all treatments. Adding probiotics to feed or feed and manure increased manure pH in comparison with controls. As time increased, changes in TN contents decreased in the order: T2 > Control > T1. Especially, the reduction in SRP contents in all treatments at 5 weeks was in following order: T1 > T2 > Control. This result suggests that it is possible to make efficient use of probiotics as feed and manure additives for reducing environmental pollution or to provide fundamental information on livestock managements to producers.

• Asian-Australasian Journal of Animal Sciences
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• 제28권3호
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• pp.369-373
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• 2015

An experiment was conducted to determine the effect of cellulose concentration in diets containing no phosphorus (P) on the basal endogenous loss (BEL) of P in growing pigs. Twelve barrows (an initial mean body weight = $49.6{\pm}3.2kg$) were individually housed in metabolism crates. Pigs were allotted to 4 experimental diets according to a cross-over design with 12 animals and 2 periods. Four P-free diets were mainly based on corn starch, sucrose, and gelatin, and were formulated to contain 0%, 4%, 8%, or 12% cellulose. Each period consisted of a 5-d adaptation and a 5-d collection period. The marker-to-marker method was used for fecal collection. The feed intake (p<0.05, linear and quadratic) and dry feces output (p<0.01, linear and quadratic) were increased with increasing dietary cellulose concentration. However, P concentration in the feces was decreased (p<0.01, linear and quadratic) with increasing dietary cellulose concentration. There was no significant difference in total P output and the BEL of P as mg per kg DMI (ranging from 157 to 214 mg/kg of dry matter intake) among experimental diets. However, values for the apparent total tract digestibility of energy, dry matter, organic matter, crude protein, and calcium were linearly decreased (p<0.01) with increasing cellulose concentration in the diet. In conclusion, dietary cellulose affected the amount of feces and digestibility of energy and nutrients, but did not affect the endogenous loss of P.

• 한국물환경학회지
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• 제20권4호
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• pp.333-338
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• 2004

This study was carried out to investigate the generation and discharge characteristics of non-point pollutants from farmlands in Nak-dong river basin. Annual unit generation load of nitrogen and phosphorus by fertilization in the test paddy field was almost similar to those calculated by the fertilization standards of district agricultural technology center, but it was extremely higher in case of the test dry field. By comparing annual total generation load of nutrients from fertilization to the data of fertilizer marketing, the accurate forecasting of generation load of pollutants was achieved by marketing data. The annual total discharge ratio of nutrients through infiltration and overflow from the farmland of the test paddy field were 9.5% and 1.1%, respectively, and those in the test dry field were 22.0% and 0.1%, respectively. The monthly discharge load of nutrients were shown the highest proportioned to the discharge load from lands, but it showed higher in phosphorus, which was caused by the intermittent discharge of phosphorus accumulated in drainage.

• 한국전기전자재료학회논문지
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• 제13권2호
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• pp.131-136
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• 2000

We have investigated the slurry induced metallic contaminations of undoped and doped silicate oxides surface on CMP cleaning process. The metallic contaminations by CMP slurry were evaluated in four different oxide films, such as plasma enhanced tetra-ethyl-orthyo-silicate glass(PE-TEOS), O3 boro-phos-pho-silicate glass(O3-BPSG), PE-BPSG, and phospho-silicate glass(PSG). All films were polished with KOH-based slurry prior to entering the post-CMP cleaner. The Total X-Ray fluorescence(TXRF) measurements showed that all oxide surfaces are heavily contaminated by potassium and calcium during polishing which is due to a CMP slurry. The polished O3-BPSG films presented higher potassium and calcium contaminations compared to PE-TEOS because of a mobile ions gettering ability of phosphorus. For PSG oxides, the slurry induced mobile ion contamination increased with an increase of phosphorus contents. In addition, the polishing removal rate of PSG oxides had a linear relationship as a function of phosphorus contents.

• 한국토양비료학회지
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• 제21권2호
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• pp.195-201
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• 1988

인산(燐酸) 축적지(畜積地) 전토양(田土壤)에서 토양(土壤) 인산(燐酸) 및 무기태(無機態) 인산(燐酸)의 형태별(形態別) 조성(造成)에 영향(影響)하는 몇가지 토양화학성(土壤化學性)과 토양(土壤)의 인산(燐酸) 함량(含量), 인산(燐酸) 흡수량(吸收量)과의 관계(關係)를 검토(檢討)한 결과(結果)를 요약(要約)하면 다음과 같디. 1. 토양(土壤) 산도(酸度) 및 치환성(置換性) 석회함량(石灰含量)은 토양(土壤)의 여러가지 인산(燐酸)들과는 정(正)의 상관관계(相關關係)를 보였는데 $1.25N-N-NH_4$ OAc-P, Saloid-P, Ca-P 및 Total-P와는 고도(高度)의 유의성(有意性)이 인정(認定)되었으나 pH와 $0.01M-CaCl_2-P$, Al-P 및 Fe-P 사이에는 유의성(有意性)있는 상관관계(相關關係)를 보이지 않았다. 2. 활성(活性) 알루미늄은 유효인산(有效燐酸), 수용성인산(水溶性燐酸) 및 무기태(無機態) 인산(燐酸) 함량(含量)과 고도(高度)의 부(負) 상관관계(相關關係)를 나타내었으나 Al-P와 Fe-P와는 유의성(有意性)이 없었고, 활성(活性) 철(鐵)은 Fe-P 및 Total-P와만 1%에서 정(正)의 상관(相關) 관계(關係)를 나타내었다. 3. 토양(土壤) 산도(酸度)와 활성(活性) 알루미늄 및 치환성(置換性) 석회(石灰) 함량(含量)과의 관계(關係)에서, 활성(活性) 알루미늄은 고도(高度) 유의성(有意性)을 보이는 부(負)의 Log함수관계(函數關係)를($r=-0.836^{***}$), 치환성(置換性) 석회(石灰)와는 정(正)의 직선(直線) 상관관계(相關關係)($r=0.769^{***}$)를 보였다. 4. 토양(土壤)의 인산(燐酸) 흡수량(吸收量)은 토양(土壤) 유효인산(有效燐酸), 수용성(水溶性) 인산(燐酸) 및 $0.01M-CaCl_2-P$와는 0.1%에서 고도(高度) 유의성(有意性)을 보이는 부(負) 상관관계(相關關係)를, 활성(活性) 알루미늄과는 정(正)의 수직상관관계(直線相關關係)를 나타내었으며, Ca-P와만 유의성(有意性)을 나타내지 않았다.

• Asian-Australasian Journal of Animal Sciences
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• 제22권3호
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• pp.404-409
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• 2009

A total of 240 day-old broiler chicks were used to study the effects of phytase on performance and phosphorus (P) excretion from birds fed diets containing low phytate barleys formulated without inorganic P. A positive control based on Harrington barley (HB) was formulated to meet requirements for total P. Three experimental diets, based on either HB (0.39% total P with 0.28% phytate P) or the low phytate varieties LP 422 (0.36% total P with 0.14% phytate P) and LP 955 (0.40% total P with 0.01% phytate P), were formulated to be below requirements for total P by removing all the inorganic P from the diet. The four diets were fed with and without 1,000 FTU/kg phytase. Apparent P digestibility was significantly higher (p<0.01) for birds fed the low phytate barleys than for birds fed HB either supplemented or un-supplemented with inorganic P. P excretion was significantly lower (p<0.01) for birds fed HB without inorganic P than with inorganic P. P excretion was further reduced by the use of the low phytate barleys LP 422 and LP 455 (p<0.01). Phytase supplementation did not affect P excretion (p = 0.39). Body weight gain and feed intake were highest for birds fed the HB diet with inorganic P and lowest for birds fed the HB diet without inorganic P (p<0.01). Among the three low P diets, body weight gain and feed intake of broilers increased as the level of phytate in the barley declined (p<0.01). Phytase modestly increased body weight gain (p = 0.08) and feed intake (p = 0.04). The overall results of this study indicate that it may be possible to reduce the amount of inorganic P used when formulating diets with low phytate barley compared with the levels needed when formulating diets with normal phytate barley. However, it is not possible to completely replace the inorganic P in diets containing low phytate barley without impairing poultry performance. Feeding diets devoid of supplementary inorganic P in combination with low phytate barley resulted in a significant reduction in P excretion by poultry.

• Environmental Engineering Research
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• 제20권3호
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• pp.277-284
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• 2015

Experiments for highly concentrated contaminants in pig waste slurry were carried out for the feasibility test of a pilot-scale innovative process scheme of engaging autothermal thermophilic aerobic digestion (ATAD) and expended granular sludge bed (EGSB) followed by sequencing batch reactor (SBR) system. Contaminants in pig waste slurry such as organic substance, total nitrogen (TN), ammonia nitrogen and total phosphorus (TP) contents were successfully reduced in the system. Total volatile solids (TVS) and chemical oxygen demands (COD) for organic matter in the feed were 32.92 g/L and 42.55 g/L respectively, and they were reduced by about 98.7% and 99.2%, respectively in the system. The overall removal efficiencies for TN and ammonium nitrogen were found to be 98.1 and 98.5%, respectively. The overall removal efficiency for total phosphorus was also found to be 92.5%. Faecal coliform density was reduced to <$1.2{\times}10^4CFU/g$ total solids. Biogas and $CH_4$ were produced in the range of 0.39-0.85 and $0.25-0.62m^3/kg$ [VS removed], respectively. The biogas produced in the system comprised of $295{\pm}26ppm$ (v/v) [$H_2S$].