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Shailendra P. Banne,Arun W. Dhawale,Rajkumar B. Patil,Manjitsinh Girase,Chinmay Kulkarni,Mayuri Dake,Simran Khan 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.4
The landslides or slope failures are responsible for many fatalities and significant delays in travel by blocking the roads. The soil properties such as cohesiveness, angle of internal friction, and bulk unit weight are the primary parameters responsible for land stability and should be considered for the analysis. In this paper, a Xanthan Gum (XG) biopolymer is applied to the laterite soil to improve its engineering properties. The Plaxis Limit Equilibrium (LE) 2D software is utilized to analyze the slope's stability. Four section/ paths of the Lote Parshuram Ghat in the Ratnagiri area of Maharashtra, India are taken for the analysis. It is observed that the applicationof the XG to the soil which is exposed to atmosphere (normal condition) and submerged conditions improves the strength of the soil and stability of slopes. When compared to conventional laterite soil in its natural state, the cohesiveness of soil treated with XG at concentrations ranging from 1 to 5% is greatly improved, increasing from 250.51% to 378.64%. XG-treated laterite soil has a maximum dry density of 1.72 gm/cc, 28.36% higher than untreated soil. Submerged XG-treated soil often shows a factor of safety (FOS) improvement of across 57.25%. The slope stability analysis revealed that the optimum percentage of xanthan gum as a stabilizer for the submerged slope condition is 2.7% that increase the factor of safety. In case of normal condition, the factor of safety (FOS) and strength of the laterite soil increases with the reinforced percentage of xanthan gum.
일산화탄소중독시(一酸化炭素中毒時) 폐(肺)로 부터의 일산화탄소(一酸化炭素) 방산(放散)에 관(關)하여
강반(Kang, Bann),김근주(Kim, Kun-Joo),여웅연(Ryo, Ung-Yun) 대한생리학회 1967 대한생리학회지 Vol.1 No.2
In order to evaluate the elimination of CO through the lung comparing with the decrease of CO content in the blood, authors had induced acute CO poisoning on 9 dogs. Arterial CO-Hb saturation, CO concentration, %, in expired gas and eliminated CO amount through the lung were measured at 1,5,10,30,60, and 120 minutes after acute CO poisoning in 6 dogs breathing room air and 3 dogs breathing room air and oxygen alternately. Results obtained are summarized as follows. In room air breathing group, arterial CO-Hb saturation averaged 50.8% , and 53.67 ml of CO was blew off through the lung during 120 minutes and in alternately air and oBygen breathing group, the arterial CO-Hb saturation averaged 65.6% and 95.6 ml of CO was blew off through the lung. The amount of CO eliminated in expired gas for 120 minute was much less than the amount of decreased CO in arterial blood which was calculated with the decreased CO-Hb content in the estimated circulating blood volume. Such difference between the amount of eliminated CO in expired gas and the decreased CO in blood might be attributed to the oxidation of CO to CO<sub>2</sub> in the tissues. Concentration of CO in expired gas was markedly increased and the rate of decrease in arterial CO-Hb saturation is enhanced by oxygen breathing. In early period of recovery from acute CO poisoning, neither the CO concentration in expired gas, nor, the rate of CO elimination (unlit 2 minutes after CO poisoning) showed close correlation with the blood CO-Hb saturation level. The reason seemed to be due to irregularly depressed or unevenly stimulated respiration which were induced by acute CO poisoning.
數種 Steroids의 白鼠赤血球 Fragility에 미치는 影響
呂雄淵,姜班 慶北大學校 醫科大學 1963 慶北醫大誌 Vol.4 No.1
The effects of Steroid, both injected intramusculary and added directly in vitro, on the red cell fragility were studied, and the following results were obtained. 1. In two groups where 1) 1.25㎎ of Cortisone and 2) 1.0㎎ of Prednisolone were injected intramusculary, the red cell osmotic fragility was significantly decreased 7 hours after the injection. 2. The Testosterone and Cortisone showed no remarkable effect on the red cell osmotic fragility in vitro during 20 hours. 3. As a control, the authors studied the red cell fragility in normal rats, and a relation curve of the hemoglobin percentage in hemolyzed solution and transmittancy in Spectrophotometer, were obtained.
일산화탄소중독견(一酸化炭素中毒犬) 체내(體內)에서의 일산화탄소처리능(一酸化炭素處理能)에 관(關)하여
여웅연(Ryo, Ung-Yun),강반(Kang, Bann) 대한생리학회 1968 대한생리학회지 Vol.2 No.2
The Present study attempted to analyze the fate of CO diffused into the circulating blood through the alveoli. Dogs were induced to CO poisoning by rebreathing CO gas mixture contained in Krog s spirometer, by closed circuit method, for 60 minutes. The spirometer was filled initially with 282 ml of CO and 20 liters of air and oxygen, so the composition of gases were arranged as 1.4% in CO and 50% in O<sub>2</sub> at the begining of the rebreathing. Oxygen was added corresponding to the utilization of O<sub>2</sub> by the animal in proceeding of the experiment. At 60th minutes of CO rebreathing, the concentration of CO in arterial blood and in mixed venous blood were analysed and compared with each other after the CO contents were corrected with the hematocrit measured in the arterial and mixed venous blood. The distribution of CO gas to other tissues was estimated by the analysis of CO diffused into the cystic bile and into the peritoneal gas pocket which was formed by injection of 300 ml air into the peritoneal cavity prior to the CO gas rebreathing. The blood volume was measured by dilution method using <sup>51</sup>Chromium tagged red cells. CO amount vanished in the animal body was calculated by subtraction of total CO content in blood stream and the CO remained in closed circuit breathing system from the CO amount given to the breathing system at the begining of the experiment. Results obtained are summarized as follows: 1. The content of CO corrected by the hematocrit value was slightly less in mixed venous blood than in arterial blood. The amount of CO diffused into the cystic bile and into the peritoneal cavity was averaged to 0.1% and 0.4% of the CO amount in 100 ml of blood, respectively. 2. For 60 minutes of CO rebreathing, CO-hemoglobin saturation reached about 77% at the 60th minutes, CO amount vanished in the experimental animal averaged 36.1 ml/dog/hr., or 21% of the total CO volume in the blood stream. The average vanishing rate of CO during 60 minutes of CO rebreathing per kg of body weight was 2.71 ml/hr. Production of CO measured in ten dogs under hypoxic condition averaged 0.023 ml/kg/hr. The major part of the CO vanished in the dogs seemed to be oxidized to CO<sub>2</sub> by various tissues of the animal. The conclusion might be delivered as such oxidation of CO to CO<sub>2</sub> by animal tissues can play a role in part of the process of recovery and protection of animal from CO-poisoning.
Gender and telomere length: Systematic review and meta-analysis
the Halcyon study team,Gardner, M.,Bann, D.,Wiley, L.,Cooper, R.,Hardy, R.,Nitsch, D.,Martin-Ruiz, C.,Shiels, P.,Sayer, A.A.,Barbieri, M.,Bekaert, S.,Bischoff, C.,Brooks-Wilson, A.,Chen, W.,Cooper, C. Pergamon Press ; Elsevier Science Ltd 2014 Experimental Gerontology Vol.51 No.-
Background: It is widely believed that females have longer telomeres than males, although results from studies have been contradictory. Methods: We carried out a systematic review and meta-analyses to test the hypothesis that in humans, females have longer telomeres than males and that this association becomes stronger with increasing age. Searches were conducted in EMBASE and MEDLINE (by November 2009) and additional datasets were obtained from study investigators. Eligible observational studies measured telomeres for both females and males of any age, had a minimum sample size of 100 and included participants not part of a diseased group. We calculated summary estimates using random-effects meta-analyses. Heterogeneity between studies was investigated using sub-group analysis and meta-regression. Results: Meta-analyses from 36 cohorts (36,230 participants) showed that on average females had longer telomeres than males (standardised difference in telomere length between females and males 0.090, 95% CI 0.015, 0.166; age-adjusted). There was little evidence that these associations varied by age group (p=1.00) or cell type (p=0.29). However, the size of this difference did vary by measurement methods, with only Southern blot but neither real-time PCR nor Flow-FISH showing a significant difference. This difference was not associated with random measurement error. Conclusions: Telomere length is longer in females than males, although this difference was not universally found in studies that did not use Southern blot methods. Further research on explanations for the methodological differences is required.