• 상하수도학회지
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• 제23권3호
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• pp.363-369
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• 2009

In order to evaluate primary clarifier performance on TSS(Total Suspended solids) removal, four different sampling sets were collected as part of this study; (1) weekly test, (2) the diurnal sampling, (3) the settling velocity distribution sampling. Primary effluent TSS($TSS_{PE}$) and non settleable TSS($TSS_{NON}$) concentrations were averaged 160 and 75.5 mg/L, respectively. These data suggest approximately 85 mg/L TSS can be removed more. Average $TSS_{NON}$, $TSS_{PE}$, and Dispersed TSS(DTSS) concentrations(75.5, 160, and 104 mg/L, respectively) suggest that 28.5 mg/L of TSS difference attributable to poor flocculation, whereas 56 mg/L of TSS difference attributable to poor hydraulics within primary clarifier. In this study, equations for maximum TSS removal efficiency and effluent TSS concentration were suggested and compared with experimented data.

• 한국양식학회지
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• 제16권4호
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• pp.216-222
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• 2003

In a simulated seawater aquaculture system, effects of different operating factors like the superficial air velocity (SAY), hydraulic residence time (HRT), protein concentration and foam overflow height on the removal of total suspended solids (TSS) by a foam fractionator, with 20 cm diameter and 120 cm height, were investigated. This experiment was performed on batch and consecutive modes for different combinations of the tested factors, using synthetic wastewater. In 5 consecutive trials, TSS concentration in culture tank water decreased faster, when the foam fractionator was operated at higher SAV and lower HRT. In batch trials, with increasing SAV, TSS removal rate increased, but decreased with increasing HRT. Higher protein concentration in the bulk solution resulted in higher TSS removal rate. TSS concentration in the collected foam condensates increased but the foam overflow rate decreased with increasing foam overflow height. Foam fractionation was effective for removing TSS in seawater aquaculture systems and its performance largely depended on the operating parameters, especially superficial air velocity.

• 전자통신동향분석
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• 제8권4호
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• pp.68-78
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• 1993

1993 년 3 월 CCITT 가 TSS(Telecommunication Standardization Sector) 로 재구성됨에 따라 UPT(Universal Personal Telecommunication) 의 연구 및 표준화가 더욱 가속화될 예정이다. 이러한 추세에 맞추어 국내 및 소내에서도 UPT 에 대한 관심도가 날로 높아가고 있다. 본 고에서는 재구성된 UPT 관련 TSS 조직, TSS SG 11 및 PMG2 UPT 그룹, UPT 연구내용, UPT 발전방향 등을 중심으로 설명하고자 한다.

• 한방안이비인후피부과학회지
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• 제12권1호
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• pp.79-98
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• 1999

The purpose of this Study was to investigate effect of TakliSodokSan(TSS) on the anti-tumor, immunocytes and nitric oxide(NO) production from mice peritoneal macrophages. This Study estimated the proliferation of L1210 cell lines, A431 cell lines, Hep-G2 cell lines, K562 cell lines, 3T3 cell lines, mouse thymocytes and mouse splenocytes and NO production from pcritoneal macrophages in vitro, and estimated the proliferation of L1210 cells, thymocytes and splenocytcs, NO production from peritoneal macrophages and body weight in L1210 cells-transplanted mice in vivo. The results were obtained as follows; 1. TSS inhibited significantly the proliferation of L1210, A431, Hep-G2, K562 cell lines in vitro. 2. TSS accelerated the proliferation of mice thymocytes and splenocytes in vitro. 3. TSS was not increased the nitric oxide production from mice peritoneal macrophages in vitro. 4. TSS inhibited significantly the proliferation of L1210 cells in Ll210 cells∼transplanted mice. 5. TSS accelerated the proliferation of mice thymocytes and splenocytes In L1210 cells-transplanted mice. 6. TSS was increased significantly the nitric oxide production from mice peritoneal macrophages in L1210 cells-transplanted mice. 7. TSS was increased the body weight as comparing with control group in Ll210 cells-transplanted mice.

• Journal of Korean Neurosurgical Society
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• 제29권7호
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• pp.929-934
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• 2000

Objective : The results of secondary transsphenoidal surgery(TSS) for either residual or recurring pituitary adenomas have been reported to be unfavorable. To evaluate the effectiveness of secondary TSS, we analyzed the surgical results of residual or recurred pituitary adenomas in patients who underwent secondary TSS from 1992 to 1998. Material and Methods : Among the 95 patients who underwent TSS during this period, 14(15%) received repeated TSS. Two of the 14 patients underwent three TSS. Among the 11 patients with pituitary adenomas, three had nonfunctioning tumors ; six prolachnomas ; two GH-secreting adenomas. The remaining three patieats had craniopharyngioma, pituitary abscess and hemangioendothelioma respectively. The interval between the two surgical procedures ranged from one week to 33 months(mean ; 12 months). Causes of the secondary TSS were tumor recurrence in 11 patients, intentional staged operation in three, persistent disease despite medical therapy and CSF leak after initial operation in one respectively. Treatments prior to secondary TSS were medical treatment only in eight patients. Results : During the repeated operationtss some adhesion was noted in septal mucous membrane. The sphenoid cavity was filled with fibrous tissue which correlated with the methods of reconstruction of the sellar floor at the previous operation. There was no statistically significant difference in success rate of surgery between the initial and the second TSS(86% vs 81%). The complication rate was similar between the two procedures. There was no statistically significant factors affecting the results of second TSS. Conclusion : Transsphenoidal reoperation was regarded as a suitable approach for treating recurrent pituitary adenomas in spite of some degree of operative difficulties. In patients with transsphenoidally resectable tumor residuals or recurrences confirmed by magnetic resonance imaging, remissions can be obtained with high probability, especially in secondary surgery after an staged decompression.

• 한국통신학회논문지
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• 제30권12C호
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• pp.1133-1143
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• 2005

본 논문에서는 다중경로 채널 환경의 초광대역 (Ultra Wide Band; UWB) 시스템에서 고속 고신뢰의 동기획득을 위한 향상된 두 단계 신호 탐색 기법인 TSS-LS(Two-Step Search scheme with the Linear search based Second step) 를 제안한다. 제안된 TSS-LS는 기존에 본 저자들이 제안하였던 TSS-BS (Two-Step Search scheme with the Bit reversal search based Second step)와 견줄만한 매우 빠른 동기획득 성능을 달성할 수 있도록 Single-Dwell 연속 동기탐색 기법에 기초하고 있으며 두 개의 다른 임계값과 탐색창을 적용한다. 반면, 제안된 TSS-LS는 UWB 시스템에서 통기획득의 고신뢰성을 보장하기 위해 두번째 단계에서 Bit Reversal 탐색 알고리즘을 사용하는 TSS-BS와는 달리 Linear 탐색 알고리즘을 적용하게 된다. IEEE 802.15.3a의 UWB 다중경로 채별 환경에서의 모의실험 결과, 일반적인 탐색 기법보다 본 논문에서 제안된 두 단계 탐색 기법의 정규화된 평균 동기획득 소요 시간이 큰 폭으로 향상됨을 확인할 수 있었다. 특히, 신호 동기획득 과정과 연동된 비트오율 성능 평가에서 제안된 TSS-LS 기법의 경우 높은 신호대 잡음비에 대해 이상적인 성능에 필적하는 매우 우수한 성능을 보임을 확인할 수 있었다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.997-999
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• 2005

블루투스 베이스밴드를 효율적으로 테스트하기 위하여, 블루투스 버전 1.1에서는 TSS를 (Test Suite Structure) 제공한다. TSS에서 정의한 part.1-3의 부분에 대한 테스트를 구현함으로써 블루투스 베이스밴드가 인증을 받을 수 있는 것이다. 본 고에서는 TSS vl.0에서 제시하는 테스트 스펙에 근거하여 블루투스 베이스밴드에 대한 설계를 검증하고 테스트 하는 방법에 대해서 논한다. 또한 테스트를 수행하기 위한 다양한 시나리오와 가능성에 대해서 논한다.

• 한국물환경학회지
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• 제39권6호
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• pp.475-490
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• 2023

Chemical water quality suitability for species (Ephemera strigata, Ephemera separigata, and Ephemera orientalis-sachalinensis group) of the mayfly genus Ephemera (Order Ephemeroptera) was analyzed with probability distribution models (Exponential, Normal, Lognormal, Logistic, Weibull, Gamma, Beta, Gumbel). Data was collected from 23,957 sampling units of 6,664 sites in Korea from 2010 to 2021. E. orientalis-sachalinensis occurred at the range of BOD₅ 0.3~11.1 mg/L (the best-fit Lognormal model); T-P 0.007~0.769 mg/L (the Gumbel model); TSS 0.4~142.2 mg/L (the Lognormal model). E. strigata occurred at the range of BOD₅ 0.4~7.4 mg/L (the Gumbel model); T-P 0.007~0.254 mg/L (the Lognormal model); TSS 0.4~17.1 mg/L (the Lognormal model). E. separigata occurred at the range of BOD₅ 0.4~2.6 mg/L (the R-Weibull model); T-P 0.007~0.134 mg/L (the Lognormal model); TSS 0.7~10.0 mg/L (the Lognormal model). Habitat suitability range of E. orientalis-sachalinensis was estimated to be 0.4~1.9 mg/L (BOD₅), 0.024~0.086 mg/L (T-P), 2.5~22.4 mg/L (TSS); that of E. strigata was 0.4~0.7 mg/L (BOD₅), 0.007~0.018 mg/L (T-P), 0.0~1.7 mg/L (TSS); that of E. separigata was 0.0~0.4 mg/L (BOD₅), 0.000~0.015 mg/L (T-P), 0.5~3.1 mg/L (TSS). In a relative comparision, E. orientalis-sachalinensis was estimated to be eurysaprobic, and narrowly adapted in high levels of T-P and TSS, E. strigata was estimated to be oligosaprobic and adapted in low levels of T-P and TSS, and E. separigata was estimated to be stenooligosaprobic and widely adapted in low level of T-P and TSS.

• 한국습지학회지
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• 제21권2호
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• pp.173-180
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• 2019

본 연구는 도로, 주차장 및 지붕에서 발생된 TSS와 중금속의 거동을 분석하기 위해 수행되었다. 강우시 도로, 주차장, 지붕에서 발생되는 중금속은 입자상 물질(TSS)에 부착되어 이동된다. 이는 TSS 부하량과 Cr, Fe, Cu 및 Pb의 입자상 중금속 및 용존성 중금속의 부하량의 상관관계로 판단 가능하다(r =0.52~0.73, p <0.01). 일반적으로 도로 및 주차장에서 발생된 TSS 및 중금속은 지붕에 비해 더 높은 것으로 분석되었는데, 이는 차량에 의해 중금속이 많이 발생하며, 집수면적 또한 도로 및 주차장이 넓기 때문으로 보여진다. 첨두유출발생시까지 TSS 부하량의 65~75%가 유출되는 것으로 나타났으며, 이는 인근 수계로 유출되는 TSS를 제거하기 위해서는 첨두유출을 제어하는 것이 가장 효과적인 것을 의미한다. 또한 비용경제적인 LID 시설의 규모를 산정하기 위해 시설의 적정 크기(시설의 표면적/배수구역 면적)에 따른 TSS와 중금속 제거율을 평가하였다. 본 연구는 LID 시설의 설계시 참고 가능한 기초데이타로 중요한 의미가 있는 것으로 사료된다.

• Environmental Engineering Research
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• 제14권4호
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• pp.262-269
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• 2009

This study examined the separation characteristics of particles in the rainfall runoff from paved roads using a ${\varphi}7.5$ cm hydrocyclone. The volume fraction and total suspended solids concentrations in the overflow and underflow from the hydrocyclone, as well as the separation efficiency were determined. The results indicated that the overflow volume increased with increasing operational pressure, but decreased with decreasing ratio of underflow outlet to inlet sizes ($D_u/D_i$), while the underflow to overflow volumes showed contrary behavior. The total suspended solid (TSS) concentration ratio between the overflow and inflow ($TSS_{over/in}$) decreased as a function of the operational pressure, while the corresponding ratio of underflow to inflow ($TSS_{under/in}$) increased. There was no visible difference in the $TSS_{over/in}$ with increasing $D_u/D_i$ ratio, but the $TSS_{under/in}$ decreased sharply. The particle removal efficiency was mainly affected by the particle size.