• Title/Summary/Keyword: Void Removal

Search Result 49, Processing Time 0.021 seconds

A Case Report of a Patient with Voiding Dysfunction Caused by Cerebral Infarction Treated with Dangguishaoyao-san-hap-Jeoryeong-tang (뇌경색 이후 발생한 배뇨곤란 환자에 대한 당귀작약산 합 저령탕 치험 1례)

  • Sun-woo Kwon;Choong-hyun Park;Ji-yoon Lee;Hye-soo Youn;Eun-chang Lee;Jung-min Son;Yi-jae Kwon;Hyo-jeong Lee;Jung-eun Lee
    • The Journal of Internal Korean Medicine
    • /
    • v.44 no.5
    • /
    • pp.1041-1049
    • /
    • 2023
  • Objectives: The aim of this study is to describe the effects of treatment with traditional Korean medicine on a patient with voiding dysfunction caused by cerebral infarction. Methods: The patient was treated with herbal medicine, moxibustion, acupuncture, and electroacupuncture. The effects of these treatments were evaluated using the Korean version of the Modified Barthel Index and a post-void residual volume. Results: In this study, the Korean medicine Dangguishaoyao-san-hap-Jeoryeong-tang resulted in improvements in this patient with post-stroke urinary retention and successful removal of the indwelling catheter. Conclusion: The results suggest that traditional Korean medicine may be effective in ameliorating dysfunction caused by cerebral infarction.

THE EFFECTS OF ATELO-COLLAGEN SPONGE INSERTION ON THE PERIODONTAL HEALING OF SECOND MOLARS AFTER IMPACTED MANDIBULAR THIRD MOLAR EXTRACTION (매복 하악 제3대구치 발치와에 Atelo-collagen Sponge 삽입이 제2대구치 예후에 미치는 영향)

  • Nam, Jin-Woo;Kim, Kyung-Wook
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.35 no.2
    • /
    • pp.112-119
    • /
    • 2009
  • Extracellular matrix(ECM) is known to function as a reservoir of endogenous growth factors, can be an effective delivery system of growth factor that easily lost bioactivity in solution. Fibrillar collagens like type I collagen, are the major constituent of the ECM and structural protein of bone. Also, it can be a scaffold for osteoblast migration. The purpose of this study was to compare the effects of absorbable Atelo-collagen Sponge($Teruplug^{(R)}$) insertion in tooth extraction sites on periodontal healing of the mandibular second molar after the extraction of the impacted third molar. The study population comprised 31 cases who had been scheduled for surgical removal of impacted mandibular third molars. All patients were in good general health and were not using any medication that would influence wound healing after surgery. In 15 cases control group, none was inserted into the tooth extraction site. In 16 cases experimental groups, $Teruplug^{(R)}$ was inserted into the tooth extraction site. We evaluated tooth mobility, pocket depth, gingival margin level preoperatively and 1 week, 2 weeks, 4 weeks, and 3 months postoperatively. The change was compared with two groups using Mann-Whitney test. The results were as follows. 1. There was no significant change of tooth mobility on both groups. 2. There was tendency of decreasing of previous pocket depth causing tooth extraction on both groups. 3. On gingival margin level, there was various change according to initial swelling and loss of attachment on both groups. 4. There was tendency of decreasing of gingival margin level on both groups because of removal of inflammation and decreasing of previous pocket depth. 5. There was large change of pocket depth on buccal middle, distal, lingual distal area because of tooth extraction and bone reduction. Compared with the control group and experimental group, we observed significant difference during some periods. The results of this study suggest that absorbable atelo-collagen sponge($Teruplug^{(R)}$) is relatively favorable bone void filler with prevention of tissue collapse, food packing and enhance periodontal healing.

Synthesis and Electrochemical Characteristics of Carbon Coated SiOx/ZnO Composites by Sol-gel Method (졸겔법으로 제조한 탄소피복된 SiOx/ZnO 복합체의 합성 및 전기화학적 특성)

  • Baek, Gwang-Yong;Jeong, Sang Mun;Na, Byung-Ki
    • Clean Technology
    • /
    • v.22 no.4
    • /
    • pp.308-315
    • /
    • 2016
  • $SiO_x/ZnO$ composites were prepared from sol-gel method for excellent cycle life characteristics. The composites were coated by PVC as a carbon precursor. ZnO removal to create a void space therein was able to buffer the volume change during charge and discharge. To determine the crystal structure and the shape of the synthesized composite, XRD, SEM, TEM analysis was performed. The carbon contents in the composites were confirmed by TGA. The pore structure and pore size distribution of the composite was measured with the BET specific surface area analysis and BJH pore size distribution. Enhanced electric conductivity by carbon addition was determined from powder resistance measurement. Electrochemical properties were measured with the AC impedance and the charge and discharge cycle life characteristics. When carbon was coated on the $SiO_x/ZnO$ sample, the electrical conductivity and the discharge capacity were increased. After removal of ZnO with HCl the surface area of the sample was increased, but the discharge capacity was decreased. $SiO_x/ZnO$ sample without acarbon coating showed very low discharge capacity, and after carbon coating the sample showed high discharge capacity. For cycle life characteristics, $C-SiO_x/ZnO$ composite (Zn : Si : C = 1 : 1 : 8) with a capacity of $815mAh\;g^{-1}$ at 50 cycle and 0.2 C has higher capacity than existing graphite-based anode materials.

Comparison of the effects of two different styles of orally prescribing prednisolone on postoperative sequelae of surgical extraction of an impacted mandibular third molar: a single-blind randomized study

  • Mohammed Mousa H. Bakri;Faisal Hussain Alabdali;Rashed Hussain Mahzari;Thamer Jabril Rajhi;Norah Mohammed Gohal;Rehab Abdu Sufyani;Asma Ali Hezam;Ahtesham Ahmed Qurishi;Hamed Mousa Bakri;Fareedi Mukram Ali
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.50 no.1
    • /
    • pp.27-34
    • /
    • 2024
  • Objectives: Surgical intervention for removal of an impacted third molar can lead to significant pain and swelling. Corticosteroids show promise for mitigating postoperative sequelae across various surgical contexts. The use of corticosteroids following minor oral surgery, though controversial, has already been proven effective. However, little research has explored peroral prescription of corticosteroids despite its convenience for outpatients and for non-surgeons like implantologists and periodontists and others who don't have access to needle injections. The aim of this study was to address a void in the literature by comparing the effects of two styles of preoral administration of prednisolone after surgical removal of the mandibular third molar and to determine which style minimizes postoperative sequelae. Materials and Methods: A randomized, split-mouth clinical study was conducted to investigate the efficacy of two different styles of preoral prednisolone in mitigating postoperative sequelae following surgical extraction of impacted mandibular third molars. Fifteen participants were enrolled in the study. Random selection was used to determine the prescription style for the right and left mandibular arch. Group A included those who received a single dose of prednisolone 25 mg, while group B received prednisolone 5 mg postoperatively for a period of three days (5 mg three times/day on the first postoperative day, 5 mg twice/day on the second postoperative day; 5 mg once/day on the third postoperative day). Results: There was a significant difference in the distance between the corner of the mouth and tragus, which decreased with the time interval with respect to group B when compared to group A. Conclusion: The present study showed that a three-day tapered dose of prednisolone postoperatively was more effective in reducing post-extraction sequelae than a single-dose regimen.

Nitrite Accumulation Characteristics According to Hydraulic Retention Time and Aeration Rate in a Biological Aerated Filter (생물여과 반응기에서 수리학적 체류시간 및 폭기량에 따른 아질산 축적 특성)

  • Yoon, Jong Moon;Kim, Dong Jin;Yoo, Ik-Keun
    • Korean Chemical Engineering Research
    • /
    • v.44 no.2
    • /
    • pp.200-206
    • /
    • 2006
  • In a biological aerated filter (BAF) packed with ceramic media (void fraction of BAF=0.32), nitrite accumulation was studied with the variation of hydraulic retention time (HRT) and superficial air velocity. Synthetic ammonium wastewater and petrochemical wastewater were fed at a constant load of $1.6kgNH_4^+-N/m^3{\cdot}d$. Ammonium removal rate was mainly affected by the superficial air velocity in BAF, but nitrite ratio($NO_2-N/NO_x-N$) in the effluent was dependent on both HRT and superficial air velocity. For a fixed HRT of 0.23 hr (corresponding to the empty bed contact time of 0.7 hr) ammonium removal rate was 73/90/92% and nitrite ratio was 0.92/0.82/0.48 at the superficial air velocity of 0.23/0.45/0.56 cm/s, respectively. When HRT is increased to 0.9 hr with superficial air velocity ranging from 0.34 to 0.45 cm/s, the ammonium removal rate was 89% on average. However nitrite ratio decreased significantly down to 0.13. When HRT was further increased to 1.4 hr, ammonium removal rate decreased, thereby resulting in the free ammonia ($NH_3-N$, FA) build-up and nitrite ratio gradually increased (>0.95). Although aeration rate and FA concentration at HRT of 0.23 hr were unfavorable for nitrite accumulation compared with those at HRT of 0.9 hr, nitrite ratio at HRT of 0.23 hr was higher. Taken together, HRT and nitrogen load were found to be critical, in addition to FA concentration and aeration condition, for nitrite accumulation in the BAF tested in the present study.

A Study on the Vent Path Through the Pressurizer Manway and Steam Generator Manway under Loss of Residual Heat Removal System During Mid-loop Operation in PWR (가압경수로의 부분충수 운전중 잔열제거계통 기능 상실사고시 가압기와 증기발생기 Manway 유출유로를 이용한 사고완화에 관한 연구)

  • Y. J. Chung;Kim, W. S.;K. S. Ha;W. P. Chang;K. J. Yoo
    • Nuclear Engineering and Technology
    • /
    • v.28 no.2
    • /
    • pp.137-149
    • /
    • 1996
  • The present study is to analyze an integral test, BETHSY test 6.9c, which represent loss of RURS accident under mid-loop operation. Both the pressurizer manway and the steam generator outlet plenum manway are opened as vent paths in order to prevent the system from pressurization by removing the steam generated in the core. The main purposes are to gain insights into the physical phenomena and identify sensitive parameters. Assessment of capability of CATHARE2 prediction can be established the effective recovery procedures using the code in an actual plant. Most of important physical phenomena in the experiment could be predicted by the CATHARE2 code. The peak pressure in the upper plenum is predicted higher than experimental value by 7 kPa since the differential pressure between the pressurizer and the surge line is overestimated. The timing of core uncovery is delayed by 500 seconds mainly due to discrepancy in the core void distribution. It is demonstrated that openings of the pressurizer manwey and the steam generator manway can prevent the core uncovery using only gravity feed injection. Although some disagreements are found in the detailed phenomena, the code prediction is considered reasonable for the overall system behaviors.

  • PDF

Studies on Cu Dual-damascene Processes for Fabrication of Sub-0.2${\mu}m$ Multi-level Interconnects (Sub-0.2${\mu}m$ 다층 금속배선 제작을 위한 Cu Dual-dmascene공정 연구)

  • Chae, Yeon-Sik;Kim, Dong-Il;Youn, Kwan-Ki;Kim, Il-Hyeong;Rhee, Jin-Koo;Park, Jang-Hwan
    • Journal of the Korean Institute of Telematics and Electronics D
    • /
    • v.36D no.12
    • /
    • pp.37-42
    • /
    • 1999
  • In this paper, some of main processes for the next generation integrated circuits, such as Cu damascene process using CMP, electron beam lithography, $SiO_2$ CVD and RIE, Ti/Cu-CVD were carried cut and then, two level Cu interconnects were accomplished. In the results of CMP unit processes, a 4,635 ${\AA}$/min of removal rate, a selectivity of Cu : $SiO_2$ of 150:1, a uniformity of 4.0% are obtained under process conditions of a head pressure of 4 PSI, table and head speed of 25rpm, a oscillation distance of 40 mm, and a slurry flow rate of 40 ml/min. Also 0.18 ${\mu}m\;SiO_2$ via-line patterns are fabricated using 1000 ${\mu}C/cm^2$ dose, 6 minute and 30 second development time and 1 minute and 30 second etching time. And finally sub-0.2 ${\mu}$ twolevel metal interconnects using the developed processes were fabricated and the problems of multilevel interconnects are discussed.

  • PDF

Mechanical Properties for Processing Parameters of Thermoplastic Composite Using Automated Fiber Placement (자동 섬유 적층(AFP)을 활용한 열가소성 복합재의 공정 변수에 따른 기계적 물성 평가)

  • Sung, Jung-Won;Choe, Hyeon-Seok;Kwon, Bo-Seong;Oh, Se-Woon;Lee, Sang-Min;Nam, Young-Woo;Kweon, Jin-Hwe
    • Composites Research
    • /
    • v.32 no.5
    • /
    • pp.229-236
    • /
    • 2019
  • In this study, the effects of the additional processing parameters on the mechanical properties of thermoplastic composites fabricated with automated fiber placement (AFP) were evaluated. Annealing and vacuum bag only processes were then performed on the manufactured thermoplastic composites, respectively. For verification, the crystallinity was measured by differential scanning calorimetry (DSC), confirming the variation of semi-crystalline thermoplastic composite according to the process conditions. The void content of thermoplastic composites was evaluated by matrix digestion method while microscopic examination confirmed the porosity distribution. The interlaminar shear strength test was conducted for three different process parameters (VBO, annealing, and no treatment). A comparison of the three tested strengths was made, revealing that the porosity value had larger effect on the mechanical properties of the thermoplastic composite compared to the degree of crystallinity. Additionally, when thermoplastic composite melted up, the pores were continuously removed under vacuum process; the removal of the pores resulted in an increase of the interlaminar shear strength.

Uplift Pressure Removal System in Underground Structure by Utilizing Geocomposite System (지오컴포지트를 이용한 양압력 제거공법)

  • Shin, Eun-Chul;Kim, Jong-In;Park, Jeong-Jun
    • Journal of the Korean Geotechnical Society
    • /
    • v.22 no.9
    • /
    • pp.61-68
    • /
    • 2006
  • Recently the large scale civil engineering projects are being implemented by reclaiming the sea or utilizing seashore and river embankment areas. The reclaimed land and utilized seashore are mostly soft ground that doesn't have sufficient bearing capacity. This soft ground consists of fine-grained soil such as clayey and silty soils or large void soil like peat or loose sand. It has high ground water table and it may cause the failure and crock of building foundation by uplift pressure and ground water leakage. In this study, the permittivity and the transmissivity were evaluated with the applied normal pressure in the laboratory. The laboratory model tests were conducted by utilizing geocomposite drainage system for draining the water out to release the uplift pressure. The soil used in the laboratory drainage test was dredged soil from the reclaimed land where uplift pressure problems can arise in soil condition. Geocomposite drainage system was installed at the bottom of apparatus and dredged soil was layered with compaction. Subsequently the water pressure was supplied from the top of specimen and the quantities of drainage and the pore water pressure were measured at each step water pressure. The results of laboratory measurements were compared with theoretical values. For the evaluation of propriety of laboratory drainage test, 2-D finite elements analysis that can analyze the distribution and the transferring of pore water pressure was conducted and compared with laboratory test results.