1.Reflection on developing bio-energy industry of large oil company.
Haiyang SUN ; Haijia SU ; Tianwei TAN ; Shumin LIU ; Hui WANG
Chinese Journal of Biotechnology 2013;29(3):299-311
China's energy supply becomes more serious nowadays and the development of bio-energy becomes a major trend. Large oil companies have superb technology, rich experience and outstanding talent, as well as better sales channels for energy products, which can make full use of their own advantages to achieve the efficient complementary of exist energy and bio-energy. Therefore, large oil companies have the advantages of developing bio-energy. Bio-energy development in China is in the initial stage. There exist some problems such as available land, raw material supply, conversion technologies and policy guarantee, which restrict bio-energy from industrialized development. According to the above key issues, this article proposes suggestions and methods, such as planting energy plant in the marginal barren land to guarantee the supply of bio-energy raw materials, cultivation of professional personnel, building market for bio-energy counting on large oil companies' rich experience and market resources about oil industry, etc, aimed to speed up the industrialized process of bio-energy development in China.
Biofuels
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China
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Gasoline
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Industry
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Petroleum
2.Aplastic Anemia in a Petrochemical Plant Worker.
Young Mann BAAK ; Yong Hyu CHOI ; Seong Kyu KANG ; Ji Hong KIM ; Kyoung Ah KIM ; Young LIM ; Joung Wook LEE
Korean Journal of Occupational and Environmental Medicine 1999;11(2):287-292
Aplastic anemia is characterized by pancytopenia with hypocellular bone marrow. Fifty percent of the cases are idiopathic and the rest are caused by various agents including drugs, chemicals, radiation and viruses. It is difficult to link specific etiologic agents, especially chemicals to the development of aplastic anemia because multiple or unknown exposures may be involved in. Benzene, a common industrial chemical and a component of gasoline, may lead progressively to pancytopenia, aplastic anemia and leukemia when exposed. A petrochemical worker with aplastic anemia was referred to our hospital to evaluate a relationship between the job history and the disease. He worked in the petrochemical plant for .21 years and was exposed to low-level benzene. There was not any other etiologic agent except benzene and this is the case report of aplastic anemia which possibly due to benzene exposure.
Anemia, Aplastic*
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Benzene
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Bone Marrow
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Gasoline
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Leukemia
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Pancytopenia
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Plants*
3.Performance optimization of property-improved biodiesel manufacturing process coupled with butanol extractive fermentation.
Longyun ZHANG ; Ying YANG ; Zhongping SHI
Chinese Journal of Biotechnology 2008;24(11):1943-1948
The products concentrations in traditional acetone-butanol (AB) fermentation are too low that large amount of energy has to be consumed in the distillation and product recovery process. Aiming at direct utilization of the fermentation products, in this study, optimization of property-improved biodiesel manufacturing process coupled with AB extractive fermentation was conducted, under the condition of using the biodiesel originated from waste cooking oil as the extractant and high concentrated corn flour medium. The effect of biodiesel/broth volume ratio, waste supernatant recycle ratio, and electronic carrier addition on the major process performance index was carefully investigated. Under the optimized condition, the biodiesel quality was improved with the cetane value increased from 51.4 to 54.4; "actual butanol yield" reached to a level of 18%, and waste supernatant recycle ratio exceeded 50%. In this way, elimination of energy-consuming product recovery process and realization of "energy-saving & waste minimization" industrial production target advocated by the state government, could be potentially expected.
Bioelectric Energy Sources
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Butanols
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chemistry
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Fermentation
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Gasoline
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Zea mays
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metabolism
4.Diesel pollution biodegradation: synergetic effect of Mycobacterium and filamentous fungi.
You-Qing LI ; Hong-Fang LIU ; Zhen-Le TIAN ; Li-Hua ZHU ; Ying-Hui WU ; He-Qing TANG
Biomedical and Environmental Sciences 2008;21(3):181-187
OBJECTIVETo biodegrade the diesel pollution in aqueous solution inoculated with Mycobacterium and filamentous fungi.
METHODSBacteria sampled from petroleum hydrocarbons contaminated sites in Karamay Oilfield were isolated and identified as Mycobacterium hyalinum (MH) and cladosporium. Spectrophotometry and gas chromatography (GC) were used to analyze of the residual concentrations of diesel oil and its biodegradation products.
RESULTSFrom the GC data, the values of apparent biodegradation ratio of the bacterial strain MH to diesel oil were close to those obtained in the control experiments. Moreover, the number of MH did not increase with degradation time. However, by using n-octadecane instead of diesel oil, the real biotic degradation ratio increased to 20.9% over 5 days of degradation. Cladosporium strongly biodegraded diesel oil with a real degradation ratio of up to 34% after 5 days treatment. When the two strains were used simultaneously, a significant synergistic effect between them resulted in almost complete degradation of diesel oil, achieving a total diesel removal of 99% over 5 days of treatment, in which one part of about 80% and another part of about 19% were attributed to biotic and abiotic processes, respectively.
CONCLUSIONThe observed synergistic effect was closely related to the aromatics-degrading ability of Cladosporium, which favored the growth of MH and promoted the bioavailability of diesel oil.
Biodegradation, Environmental ; Cladosporium ; metabolism ; Environmental Pollutants ; metabolism ; Gasoline ; Mycobacterium ; metabolism
5.Two Cases Showing Severe Abdominal Combustion.
Kyung Moo YANG ; Shin Mong KANG ; Han Young LEE ; Won Tan LEE
Korean Journal of Legal Medicine 2002;26(2):60-63
Two cases showing severe combustion, especially, of the abdomen are presented in this report. The corpse were found in the outdoor field. Their head and four extremities showed relatively weak combustion with their original contour. But, their abdomen including lumbar vertebrae almost totally became ash. Gasoline and Kerosine had been used in each case. At the time of autopsies, I did not understand exactly why these corpse showed peculiar findings like this. Recently one scientist had performed an experiment with pig. The result of the combustion in this reference is same with my cases. According to this experiment, the melted fat leaked from the splitted skin acted as fuel and the burned clothes or blanket acted as a wick. The total combustion of the abdomen is not a suspicious finding of previous open wound before fire. This knowledge is beneficial for the practitioners in the forensic field.
Abdomen
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Autopsy
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Burns
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Cadaver
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Extremities
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Fires
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Gasoline
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Head
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Kerosene
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Lumbar Vertebrae
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Skin
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Wounds and Injuries
6.An Unexpected Death Related to Accidental Gasoline Inhalation.
So Woon KIM ; Young Man LEE ; Kyounghong LEE ; Jong Shin PARK ; Jaehong PARK ; Byung Ha CHOI ; Sohyung PARK
Korean Journal of Legal Medicine 2016;40(3):83-87
Gasoline is a chemical compound of aliphatic and aromatic hydrocarbons, and it easily vaporizes because of its volatile characteristics. Gasoline inhalation may occur accidentally or intentionally in various situations which could result in acute non-lethal or lethal intoxication. Given that gasoline is widely used in everyday life, it is surprising that deaths related to gasoline inhalation rarely occur. We presented a rare case of unexpected death related to gasoline inhalation with the postmortem findings and features.
Autopsy
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Death, Sudden
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Forensic Toxicology
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Gasoline*
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Hydrocarbons, Aromatic
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Inhalation*
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Intention
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Poisoning
7.Longitudinal trends of blood lead levels before and after leaded gasoline regulation in Korea
Se Eun OH ; Gi Bog KIM ; Sung Ho HWANG ; Mina HA ; Kyoung Mu LEE
Environmental Health and Toxicology 2017;32(1):2017019-
The objective of this study was to verify a change in the longitudinal trend of blood lead levels for the Korean population, before and after the regulation of leaded gasoline— which occurred between 1987 and 1993 in Korea. A total of 77 reports on blood lead levels among general Korean population between 1981 and 2014 were selected, and the results were summarized to have the variables of year, number of subjects, the subjects’ range in age, gender, and blood lead concentrations (arithmetic mean). The annual average atmospheric lead levels for four major cities (i.e., Seoul, Busan, Daegu and Gwangju) were collected from the Air Pollution Monitoring Database from 1991, and pilot studies from 1985 to 1990 before the national air quality monitoring system was launched in 1991. Blood lead levels were visualized in a bubble plot in which the size of each bubble represented the sample size of each study, and the annual average concentrations in ambient air were depicted on line graphs. Blood lead levels in the Korean population tended to gradually increase from the early 1980s (approximately 15-20 μg/dL) until 1990-1992 (20-25 μg/dL). Blood lead levels then began to rapidly decrease until 2014 ( < 2 μg/dL). Similar patterns were observed for both adults (≥20 years) and younger children/adolescents. The same longitudinal trend was observed in annual average atmospheric lead concentration, which suggests a significant correlation between air lead concentration and blood lead concentration in the general population. In conclusion, the regulation of leaded gasoline has significantly contributed to the rapid change in blood lead concentrations. And, the regulation of other sources of lead exposure should be considered to further decrease blood lead levels in the Korean population.
Adult
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Air Pollution
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Busan
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Daegu
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Gasoline
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Humans
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Korea
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Pilot Projects
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Sample Size
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Seoul
8.Evaluation of the immunobiological effects of a regenerative far-infrared heating system in pigs
Suji KIM ; Hong Tae PARK ; Sang Hee SOH ; Myung Whan OH ; Soojin SHIM ; Han Sang YOO
Journal of Veterinary Science 2019;20(6):e61-
Thermal conditions are an important environmental factor in maintaining healthy pigs because they affect feed intake, growth efficiency, reproduction and immune responses in pigs. RAVI, a regenerative far-infrared heating system, can effect pig production by emitting an optimal far-infrared wavelength. Far-infrared radiation has been reported to increase microvascular dilation and vascular flow volume. The purpose of this study was to evaluate the immunobiological differences between pigs raised with the RAVI system and the gasoline heater system. Twenty-six-week-old weaned pigs were raised in two rooms that were equipped with a RAVI system or a gasoline heater for 8 weeks. A porcine atrophic rhinitis vaccine was administered after two weeks and transcriptome analysis in whole blood were analyzed at 2-week intervals. Signaling pathway analyses of the RAVI group at 8 weeks showed the activation of pathways related to nitric oxide (NO) production. This suggests that the application of RAVI might induce the production of NO and iNOS, which are important for increasing the immune activity. Similar to the result of microarray, phenotypic changes were also observed at a later period of the experiment. The increase in body weight in the RAVI group was significantly higher than the gasoline heater group at 8 weeks. The antibody titer against the vaccine in the RAVI group was also higher than that the gasoline heater group at 4 weeks and 8 weeks. This evaluation of the use of a far-infrared heating system with pigs will be helpful for applications in the pig farm industry and pig welfare.
Agriculture
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Body Weight
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Gasoline
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Gene Expression Profiling
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Heating
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Hot Temperature
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Nitric Oxide
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Reproduction
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Rhinitis, Atrophic
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Swine
9.Three Cases of Planned Complex Suicide
Korean Journal of Legal Medicine 2019;43(4):159-163
Complex suicide refers to a type of suicide that leads to death using two or more methods. We report three cases of unique and rare examples of complex suicide, with the plan of the second and/or third method working simultaneously if the first suicidal attempt had failed. In the first case, the victim used three methods of asphyxia: hanging by a safety belt, plastic bag suffocation, and self-ligature strangulation by stretching rubber bands within the vehicle. In the second case, the victim hanged himself with electrocution by attaching electrical leads to the right side of his head. In the third case, the victim with the intention of drowning jumped 20 m above the water surface on the bridge by tying metal chains to the bridge rail and self-immolation by gasoline. Planned complex suicide involves more successful methods to commit suicide and may conversely be camouflaged as suicide in murder case.
Asphyxia
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Drowning
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Gasoline
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Head
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Homicide
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Intention
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Methods
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Plastics
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Rubber
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Suicide
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Water
10.Analysis of psychological and N-EMG abnormality of patients with solvent gasoline poisoning.
Chang-ying LI ; Shao-yuan MA ; Chang-ping SONG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2009;27(1):49-51
Adult
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Electromyography
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Gasoline
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poisoning
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Humans
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Male
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Poisoning
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physiopathology
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psychology
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Young Adult