• Title/Summary/Keyword: cold accumulation

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Investigation of Vertical Profiles of Meteorological Parameters and Ozone Concentration in the Mexico City Metropolitan Area

  • Benitez-Garcia, Sandy E.;Kanda, Isao;Okazaki, Yukiyo;Wakamatsu, Shinji;Basaldud, Roberto;Horikoshi, Nobuji;Ortinez, Jose A.;Ramos-Benitez, Victor R.;Cardenas, Beatriz
    • Asian Journal of Atmospheric Environment
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    • v.9 no.2
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    • pp.114-127
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    • 2015
  • In the Mexico City Metropolitan Area (MCMA), ozone ($O_3$) concentration is still higher than in other urban areas in developed countries. In order to reveal the current state of photochemical air pollution and to provide data for validation of chemical transport models, vertical profiles of meteorological parameters and ozone concentrations were measured by ozonesonde in two field campaigns: the first one, during the change of season from wet to dry-cold (November 2011) and the second during the dry-warm season (March 2012). Unlike previous similar field campaigns, ozonesonde was launched twice daily. The observation data were used to analyze the production and distribution of ozone in the convective boundary layer. The observation days covered a wide range of meteorological conditions, and various profiles were obtained. The evolution of the mixing layer (ML) height was analyzed, revealing that ML evolution was faster during daytime in March 2012 than in November 2011. On a day in November 2011, the early-morning strong wind and the resulting vertical mixing was observed to have brought the high-ozone-concentration air-mass to the ground and caused relatively high surface ozone concentration in the morning. The amount of produced ozone in the MCMA was estimated by taking the difference between the two profiles on each day. In addition to the well-known positive correlation between daily maximum temperature and ozone production, effect of the ML height and wind stagnation was identified for a day in March 2012 when the maximum ground-level ozone concentration was observed during the two field campaigns. The relatively low ventilation coefficient in the morning and the relatively high value in the afternoon on this day implied efficient accumulation of the $O_3$ precursors and rapid production of $O_3$ in the ML.

Study on the 'Diagnosis and Treatment of Terror and Palpitation due to Fright and the Several Hemorrhagic Diseases' in Synopsis of Golden Chamber (금궤요략${\cdot}$경계토뉵하혈흉만어혈병맥증병치 제십육(第十六)에 대(對)한 연구(硏究))

  • Yun, Ju-Heon;Park, Kum-Sook;Kwon, Mi-Ja;Lim, Dong-Kook;Jeong, Heon-Young
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.1
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    • pp.13-24
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    • 2008
  • This Chapter mentioned Terror and Palpitation due to Fright(驚悸) and Hemorrhagic disease(血證). Terror and Palpitation due to FrightAcctually Terror(驚) is different from Palpitation(悸). Terror(驚) is one of the seven emotions. But in this case, It refer to the Palpitation and the uneasiness of mind due to one's hearing a strange sound of seeing a strange. Tremulous Pulse can be appear. So Terror(驚) is caused by Exopathic Factors(外因) and belongs to Excess syndrome(實證). Palpitaion(悸) is the sensation of plamus, palpitation and unrest not because of being frightened. It is usurally caused by the deficiency of Ki(氣) and blood(血). So Deep, Thready and weak pulse can be appear. So Palpitaion(悸) is caused by Endopathic Factors and belongs to Deficiency Syndrome. In this Chapter, Terror and Palpitation due to Fright(驚悸) treat with the Kyeji-ke-jakyak-ka-chokchil-moryu-yongkol-kuyuk-tang(桂枝去芍藥加蜀漆牡蠣龍骨救逆湯) and Banha-mahwang-hwan(半夏麻黃丸). There are two type in Hemorrhagic disease(血證). One is bleeding(出血) and another is blood stasis(瘀血). The contents which relate with the Hemorrhagic disease(血證) are Hematemisis(吐血), Rhinorrhagia, Hemafecia(下血). In hemorrhage pathological mechanisms, there are two mechanisms. One is that Fire and Heat(火熱) pressure blood. Another is that cold and deficiency(虛寒) disable Ki(氣) from keeping blood flowing within vessels. Blood stasis(瘀血) can be called Extravasated Blood(惡血), Coagulated Blood, Blood retention(蓄血,積血), Dead Blood(死血) and Emaciation due to Blood disorder(乾血). It refer to a morbid state of unsmooth circulation and blood stagnancy often resulting from Ki(氣) stagnation, Ki(氣) deficiency and accumulation of pathogenic coldness. The symptom of Blood stasis are 'Fullness sensation in the chest, Lip Flaccidity, Cyonotic Tongue and Dryness of Mouth'. And the man who have Blood stasis, want to rinse his mouth with the water, but he can't drink the water because there isn't interior Heat of Excess Type. The symptom of Cyonotic Tongue(舌靑) had influence on diagnosing Blood stasis(瘀血) in offspring.

The beneficial effect of ginsenosides extracted by pulsed electric field against hydrogen peroxide-induced oxidative stress in HEK-293 cells

  • Liu, Di;Zhang, Ting;Chen, Zhifei;Wang, Ying;Ma, Shuang;Liu, Jiyun;Liu, Jingbo
    • Journal of Ginseng Research
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    • v.41 no.2
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    • pp.169-179
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    • 2017
  • Background: Ginsenosides are the main pharmacological components of Panax ginseng root, which are thought to be primarily responsible for the suppressing effect on oxidative stress. Methods: 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and oxygen radical absorption capacity were applied to evaluate the antioxidant activities of the ginsenosides. Human embryonic kidney 293 (HEK-293) cells were incubated with ginsenosides extracted by pulsed electric field (PEF) and solvent cold soak extraction (SCSE) for 24 h and then the injury was induced by $40{\mu}M$ $H_2O_2$. The cell viability and surface morphology of HEK-293 cells were studied using MTS assay and scanning electron microscopy, respectively. Dichloro-dihydro-fluorescein diacetate fluorescent probe assay was used to measure the level of intracellular reactive oxygen species. The intracellular antioxidant activities of ginsenosides were evaluated by cellular antioxidant activity assay in HepG2 cells. Results: The PEF extracts displayed the higher 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and stronger oxygen radical absorption capacity (with an oxygen radical absorption capacity value of $14.48{\pm}4.04{\mu}M\;TE\;per\;{\mu}g/mL$). The HEK-293 cell model also suggested that the protective effect of PEF extracts was dose-dependently greater than SCSE extracts. Dichloro-dihydro-fluorescein diacetate assay further proved that PEF extracts are more active (8% higher than SCSE extracts) in reducing intracellular reactive oxygen species accumulation. In addition, scanning electron microscopy images showed that the HEK-293 cells, which were treated with PEF extracts, maintained more intact surface morphology. Cellular antioxidant activity values indicated that ginsenosides extracted by PEF had stronger cellular antioxidant activity than SCSE ginsenosides extracts. Conclusion: The present study demonstrated the antioxidative effect of ginsenosides extracted by PEF in vitro. Furthermore, rather than SCSE, PEF may be more useful as an alternative extraction technique for the extraction of ginsenosides with enhanced antioxidant activity.

A literatual study on the Ecthyma (렴瘡에 對한 文獻的 考察)

  • Kim, Hee-Taek;Oh, Young-Seon;Rho, Sek-Seon
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.10 no.1
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    • pp.209-246
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    • 1997
  • In the literatual study on the Ecthyma, the results were as follows. 1. The pathogenic factors of Ecthyma is divided three parts. One is exogenous pathogenic factors which including the wind evil, wind heat and toxic material produced by wetness evil. Another is endogenous pathogenic factors which including the declination of kidney-yang, impairment of the liver and kidney, the lower classes of yin-fire, accumulation of wetness-heat in the spleen asthenia, impairment of the liver and kidney, wetness-heat of three yang, asthenic heat-syndrome of three yin. The other is pathogenic factors neither endogenous nor exogenous which including the food and living, uncontrol sexual excess, anxiety and angry, injury of skin, injury of insects and animals. 2. Five viscera which was concerned with Ecthyma are liver, spleen and kidney. 3. Frequent region of Ecthyma are S-36(足三里) and C-7(陰交). External Ecthyma was rose to wetness-heat of three yang channel that cured easily. Internal Ecthyma was rose to asthenic heat-syndrome of three yin channel that cured hardly. 4. In the frequency of prescription, the most numerous prescription is Bojungikgitang(補中益氣湯) and the next are Kyukgigo(隔紙膏) and Yukmijihwanghwan(六味地滉丸). 5. In the frequency of medicine, the most medicine is Calomelas(輕粉) which included Hydrargyrum(水銀) and the next are Olibanum(乳香) and Resina Commiphorae Myrrhae(沒藥) which regulating vital energy and pain control medicine used that in order to destroy insects and remove polson. 6. In classification of the medical action, medicine of clearing away summer-heat and heat evil and activating blood circulation to dissipate blood stasis used to be very busy which in order to remove the disorder of vital energy for virulent heat-evil. 7. In classification of four characters, the most part is warm medicine, the next are cold and cool medicine and there is a few that is hot medicine. 8. In classification of five tastes, the most numerous tastes are bitter and acrid, the next are sweet, salty and sour tastes. 9. In classification of virulence of medicine, the most part is non-toxic, the next are weakly and deadly poison. 10. In classification of channel distribution, the most is the medicine that belongs to liver channel, the next are the lung, spleen, stomach and kidney channel.

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Using Digital Climate Modeling to Explore Potential Sites for Quality Apple Production (전자기후도를 이용한 고품질 사과생산 후보지역 탐색)

  • Kwon E. Y.;Jung J. E.;Seo H. H.;Yun J. I.
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.6 no.3
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    • pp.170-176
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    • 2004
  • This study was carried out to establish a spatial decision support system for evaluating climatic aspects of a given geographic location in complex terrains with respect to the quality apple production. Monthly climate data from S6 synoptic stations across South Korea were collected for 1971-2000. A digital elevation model (DEM) with a 10-m cell spacing was used to spatially interpolate daily maximum and minimum temperatures based on relevant topoclimatological models applied to Jangsoo county in Korea. For daily minimum temperature, a spatial interpolation scheme accommodating the potential influences of cold air accumulation and the temperature inversion was used. For daily maximum temperature estimation, a spatial interpolation model loaded with the overheating index was used. Freezing risk in January was estimated under the recurrence intervals of 30 years. Frost risk at bud-burst and blossom was also estimated. Fruit quality was evaluated for soluble solids, anthocyanin content, Hunter L and A values, and LID ratio, which were expressed as empirical functions of temperature based on long-term field observations. AU themes were prepared as ArcGlS Grids with a 10-m cell spacing. Analysis showed that 11 percent of the whole land area of Jangsoo county might be suitable for quality 'Fuji' apple production. A computer program (MAPLE) was written to help utilize the results in decision-making for site-selection of new orchards in this region.

Some Observations on the Organelles Participating in the Biliary Excretion in the Hepatocyte of the Biligrafin Injected Mouse (Biligrafin 투여 마우스 간세포의 미세구조적 및 세포화학적 연구)

  • Kim, Hyang;Shin, Young-Chul
    • Applied Microscopy
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    • v.23 no.2
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    • pp.53-77
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    • 1993
  • In this study, an attempt was made to investigate the probable organelles participating in the secretion of biligrafin. The animals (ICR male mice, 25-30gm) were divided into normal control and 6 biligrafin injected groups to which 30% biligrafin (0.006ml/gm b.w.) were injected at 10, 20, 40, 80, 160 and 320 min prior to the sampling. The mice of each group were perfused through the heart with ice-cold 2.5% glutaraldehyde buffered with 0.1M Na-cacodylate (pH. 7.4) under the Na-pentobarbital (Nembtal 0.0015mg/gm b.w.) anesthesia and liver tissues were taken from each group. Some specimens were immersed 1 hr in the same solution used in the perfusion. After an overnight rinse in 0.1M Na-cacodylate buffer containing 10% DMSO and 7.6% sucrose, $75{\mu}m$ fronzen sections were made for cytochemical study. The sections were incubated in thiamin pyrophosphatase (TPPase) and inosine diphosphatase (ID Pase) media for 70 min at $37^{\circ}C$ respectively and acid phosphatase (AcPase) medium for 40 min at $37^{\circ}C$. They were postfixed in 1 % $OsO_4$ for 1 hr. The other specimens were immersed for 8 hrs in the fixative consisting of 2.5% glutaraldehyde and 3.0% paraformaldehyde buffered with Na-cacodylate (pH. 7.4). All of the osmificated specimens were processed for electron microscopy. In both normal and biligrafin injected groups, endoplasmic reticulum (ER), vacuoles, Golgi apparatus and lysosomes were seen in the vicinity of bile canaliculus. In the biligrafin injected groups, however, the Golgi apparatus appeared to be decreased and ER and vacuoles were dilated and increased. The rough endoplasmic reticulum (RER) having a few attached ribosomes appeared to be the round saccule, especially at 20 min after biligrafin injection. Smooth endoplasmic reticulum (SER) seemed to be formed by the detachment of ribosomes at the cisternal end of RER. The cistern of SER showed saccules which probably budded off to form the vacuole. The vacuoles were devoid of visible centents. This finding seemed to be in agreement with the biochemical property of the bile constituents. The fusion between the vacuoles and bile canaliculus were frequently seen in the groups injected with biligrafin. The lysosome did not show any changes in the biligrafin injected groups. Accumulation of some material and lipid droplets were seen at the 40 and 80 min after biligrafin injection, especially at the latter. At 160 and 320 min after biligrafin injections, however, they were decreased successively while the RER stack, free ribosomes and polysomes were increased. Although the reactive products of TPPase and IDPase were observed in the ER saccules and vesicles of the normal control and biligrafin injected groups, the fusion between the bile canaliculus and saccules or vesicles could easily be seen in the latter. The AcPase activity, however, was observed in the cistern at the maturing face of Golgi apparatus and lysosomes in both normal and biligrafin groups. The results suggest that the biligrafin is excreted via the vesicles, vacuoles or sacoules probably derived from the SER without the participation of Golgi apparatus and lysosomes, and the excess amount of material is stored as inclusions during the repairing of the organelles being overactive.

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Obesity Regulation through Gut Microbiota Modulation and Adipose Tissue Browning (장내 미생물의 조절과 지방세포의 갈색지방화를 통한 비만 조절 연구)

  • Cho, Yejin;Shamim, Rahman Md.;Kim, Yong-Sik
    • Journal of Life Science
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    • v.29 no.8
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    • pp.922-940
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    • 2019
  • Obesity, represented by abnormal fat accumulation due to an imbalance between energy intake and expenditure, is a major public health issue worldwide, leading to multiple noncommunicable diseases, including atherosclerosis, hypertension, type 2 diabetes, and cancer. Diverse solutions have been proposed to combat obesity. Attention has focused on two types of adipose tissues as a promising therapeutic target in obesity: traditional brown and beige or brite. Unlike energy-storing white adipose (endocrine) tissue, traditional brown adipose tissue and beige adipose tissue have energy-dissipating thermogenic properties. Both types of tissue are present in adult humans and inducible through external stimuli, such as cold exposure, ${\beta}3$-adrenergic receptor agonists, and phytochemicals. Among these stimuli, microbiota present in the human intestinal tract participate in multiple metabolic activities. Modulation of gut microbiota may offer a potent and possibly curative strategy against various metabolic diseases. Numerous studies have focused on the effects of established antiobesity treatments on the gut microenvironment or brown-adipose-tissue activation. In this review, we focus mainly on stimuli known to alleviate obesity, weight gain, and metabolic diseases, in addition to known and possible inter-relations between gut microbiota modulation and similar interventions and adipose tissue browning. The findings may pave the way toward new strategies against obesity.

Studies on Reserved Carbohydrates and NEL ( Net energy Lactation ) in Corn and Sorghum I. Synthesis and Accumulation Pattern of Fructosan, Mono-and Disaccharose (옥수수 및 Sorghum에 있어서 탄수화물과 NEL 축적에 관한 연구. I. Fructosan , Mono 및 Disaccharose의 합성 및 축적형태)

  • ;G. Voigtlaender
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.5 no.1
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    • pp.45-52
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    • 1985
  • Phytotron and field experiments were conducted to determine the influence of morphological development and environmental temperature on synthesis, translocation and accumulation behaviour of Fructosan, Monoand Disaccharose in corn cv. Blizzard and fodder sorghum cv. Sioux and Pioneer 931 at Munich technical university. Sorghum and maize plants were grown for 42 days at 4 temperature regimes (30/25, 25/20, 28/18 and 28/8 dog C) and mid-summer sunlight over 13-h days. The obtained results are summarized as follows: 1 Non-structural carbohydrates in maize and sorghum were accumulated mainly as Mono- and Disaccharose. The concentrations of Mono- and Disaccharose were increased markedly after differentiation of growing points and shown at early milk stage the highest contents with 27.8-29.1% and 16.8-20.4% for maizeand sorghums respectively. 2. Non-structural carbohydrates were accumulated mainly in stalk. However, during the late maturity the most of Mono- and Disaccharose were translocated into grain and reserved as starch. The increase of starch was associated with decrease of total non-structural carbohydrates. 3. Fructosan synthesis was not affected by morphological changes and environmental factors, which shows a value of 1.5-2.5% in whole stage of maize and sorghum. 4. Sorghum and maize plants were shown to have a great photosynthetic rates to high temperature. Reserved Mono- and Diaaccharose were, however, declined when temperature exceeded 30 dog C. Under cold stress at l8/8 deg C non-structural carbohydrates were not translocated and also were accumulated in leaves too much that cause to restrict of photosynthesis. 5. Net Energy Lactation (NEL) of sorghum and maize were directly associated with synthetic rates of non-structural carbohydrates, especially Mono- and Disaccharose. The highest values of NEL were found at physiological maturity stage with 6.6- 6.9 MJ and 5.7-6.0 MJ-NEL/kg for maize and sorghum respectively.

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Difference in Freshness of Soybean Sprouts as Affected by $\textrm{CO}_2$ Concentration and Postharvest Storage Temperature (콩나물 재배과정 중 기체 조성과 수확 후 저장온도에 따른 선도 변화)

  • 배경근;남승우;김경남;황영현
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.3
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    • pp.172-178
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    • 2004
  • When soybean sprouts aye grown in the closed condition (where the ratio of $\textrm{O}_2$ and $\textrm{CO}_2$ is 7 : 3), amount of $\textrm{CO}_2$ is increased and $\textrm{O}_2$ is decreased with the passage of time. At the same time, the amount of ethylene is automatically increased. By increasing the concentration of ethylene gas up to 0.5-1.0 ppm in the growth room, the length of sprouts was restricted to 6-7 cm and the thickness of sprouts was increased to 2.70$\pm$0.30 mm. The production of good quality sprouts which were fat and short was possible without application of any growth regulators such as indole-3-acetic acid known to have accumulation problem in humane body. To maintain the freshness during the transportation and prevent sprouts from rotting and bad smell at market, cold storage at 2-$5^{\circ}$ and airtightness which will restrict photosynthesis and respiration (higher than $10^{\circ}$) are needed. The freshness of sprouts is depended on the increase of $\textrm{CO}_2$ and the depletion of $\textrm{O}_2$ in the package. When the sprouts were stored below 1$0^{\circ}C$ (preferably below 8$^{\circ}C$), the concentration of $\textrm{CO}_2$ in the package remained below 30% for more than 60 hours, which was possible to keep sprouts in freshness without any offensive odor, But sprouts were maintained at $13^{\circ}$ for more than 25 hours, the concentration of $\textrm{CO}_2$ increased over 30% and produced an offensive odor. The little amount of $\textrm{O}_2$ gas was existing for 30 hours at $5^{\circ}$ but it was disappeared completely within 7 hours over $10^{\circ}$ and the sprouts became rot and produced severe offensive odor.

Major character analysis of CAX 1 (cation exchanger 1) transgenic rice plants in In Vivo (CAX 1 형질전환체 벼의 In Vivo에서 주요특성 분석)

  • Kim, Kyung-Min
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.54 no.4
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    • pp.375-383
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    • 2009
  • This study was carried out to develop transgenic rice cultivars with the CAX1 (accession no. U57411) gene. We successfully selected the transgenic rice plants over-expressing the Arabidopsis H+/$Ca^{2+}$ antiporter CAX1 (accession no. U57411) gene in T6 generation. The brown rice of the CAX1 expressing rice contained 13.4~68.0 % more calcium $(Ca^{2+})$ than that of the wild type and 5 lines were selected based on the phenotypes compared to the control cultivar at the GMO field. The CAX1 expressing transgenic rice plants were similar in phenotype to the wild type during the whole growth period. Also these selected 4 lines appeared to be resistant to blast, cold and water solution compared with the wild type. Difference in 1,000 grain weight of brown rice was observed among each line but grain shape did not show any morphological alternations. These results suggest the enhanced Ca-substrate specificity of CAX1 exchanger in donor plant. Therefore, intact CAX1 exchanger can be functionally useful for $Ca^{2+}$ nutrient enrichment of rice with reduced accumulation of undesirable cation.