• International Journal of Aeronautical and Space Sciences
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• 제17권1호
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• pp.37-44
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• 2016

Optical fiber temperature sensing systems have incomparable advantages over traditional electrical-cable-based monitoring systems. However, the fiber optic interrogators and sensors have often been rejected as a temperature monitoring technology in real-world industrial applications because of high cost and over-specification. This study proposes a multiplexed fiber optic temperature monitoring sensor system using an economical Optical Time-Domain Reflectometer (OTDR) and Hard-Polymer-Clad Fiber (HPCF). HPCF is a special optical fiber in which a hard polymer cladding made of fluoroacrylate acts as a protective coating for an inner silica core. An OTDR is an optical loss measurement system that provides optical loss and event distance measurement in real time. A temperature sensor array with the five sensor nodes at 10-m interval was economically and quickly made by locally stripping HPCF clad through photo-thermal and photo-chemical processes using a continuous/pulse hybrid-mode laser. The exposed cores created backscattering signals in the OTDR attenuation trace. It was demonstrated that the backscattering peaks were independently sensitive to temperature variation. Since the 1.5-mm-long exposed core showed a 5-m-wide backscattering peak, the OTDR with a spatial resolution of 40 mm allows for making a sensor node at every 5 m for independent multiplexing. The performance of the sensor node included an operating range of up to $120^{\circ}C$, a resolution of $0.59^{\circ}C$, and a temperature sensitivity of $-0.00967dB/^{\circ}C$. Temperature monitoring errors in the environment tests stood at $0.76^{\circ}C$ and $0.36^{\circ}C$ under the temperature variation of the unstrapped fiber region and the vibration of the sensor node. The small sensitivities to the environment and the economic feasibility of the highly multiplexed HPCF temperature monitoring sensor system will be important advantages for use as system-integrated temperature sensors.

• Asian-Australasian Journal of Animal Sciences
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• 제20권6호
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• pp.894-899
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• 2007

An experiment was conducted using a [6, 6-$^2H$]glucose isotope dilution method to determine the effects of plantain (Plantago lanceolata L.) on plasma glucose metabolism in sheep taken from a thermoneutral environment and exposed to a hot environment. The sheep were fed either mixed hay (MH) of orchardgrass (Dactylis glomerata L.) and reed canarygrass (Phalaris arundinacea L.) at a 60:40 ratio or MH and plantain (PL) at a 9:1 ratio in a crossover design for each 23-day period. In both dietary treatments the metabolizable energy (ME) and crude protein intake were designed to be isoenergetic and isoproteinous at around maintenance level. The sheep were taken from a thermoneutral environment ($20^{\circ}C$, 70% RH) and exposed to a hot environment ($28-30^{\circ}C$, 70% RH) for 5 days. The isotope dilution method using a single injection of [6, 6-$^2H$]glucose was performed on the $18^{th}$ day of the thermoneutral environment and on the $5^{th}$ day of heat exposure. Plasma glucose pool size was numerically lower (p = 0.26) during heat exposure on both dietary treatments, and numerically higher (p = 0.13) on the MH diet irrespective of environmental temperature. Plasma NEFA concentration (p = 0.01) and glucose turnover rate (p = 0.03) were decreased during heat exposure, but remained similar between diets. It could be concluded that, although no positive impact of plantain on glucose metabolism was found under the present experimental conditions (plantain constituted only 10% of basal diet), plantain herb is an alternative to MH for rearing sheep in both thermoneutral and hot environments.

• Asian Pacific Journal of Cancer Prevention
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• 제17권2호
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• pp.575-579
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• 2016

The aim of this research is to determine the characteristics of endothelial factors and the hemostatic system conditions with malignant neoplasms patients, which were exposed to ionizing radiation. Total number of examined people is 223, 153 of them are patients with gastrointestinal tract oncopathology. The article presents the results of the analysis of numerical indicators of endothelial condition and platelet hemostasis of patients, who had cancer. They lived in the regions of Kazakhstan, subjected to contamination of radionuclides as a result of nuclear weapons tests, which took place in this region from 1949 to 1989. These results then were compared to cancer patients and healthy individuals with no radiation risk. The study revealed the presence of higher levels of endothelial dysfunction and following trigger of the hemostatic system in patients with malignant tumors of the gastrointestinal tract. In particular, the defined high degree of endothelial dysfunction include endothelium-dependent vasodilation, content desquamated endothelial cells in peripheral blood and von Willebrand factor. These indicators have a clear correlation with the degree of disorder of studied parameters of the hemostasis, which can cause the development of thrombotic complications.

• Asian Pacific Journal of Cancer Prevention
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• 제14권12호
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• pp.7555-7560
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• 2013

Background: Beedi rollers are exposed to unburnt tobacco dust through cutaneous and pharyngeal route and it is extremely harmful to the body since it is carcinogenic in nature and can cause cancer during long exposure. This indicates that occupational exposure to tobacco imposes considerable genotoxicity among beedi workers. Materials and Methods: In the present study, 27 beedi workers and age and sex matched controls were enrolled for clinical, cytogenetics and molecular analysis. Clinical features were recorded. The workers were in the age group of 28-67 years and were workers exposure from 8-60 years. Blood samples were collected from workers and control subjects and lymphocyte cultures were carried out by using standard technique, slides were prepared and 50 metaphases were scored for each sample to find the chromosomal abnormalities. For molecular analysis the genomic DNA was extracted from peripheral blood, to screen the variations in gene, the exon 1 of CYP1A1 gene was amplified by polymerase chain reaction (PCR) and then screened with Single Strand Conformation Polymorphism (SSCP) analysis. Results: A statistically significant increase was observed in the frequencies of chromosomal aberrations in exposed groups when compared to the respective controls and variations observed in Exon 1 of CYP1A1(Cytochrome P450, family 1, subfamily A, polypeptide 1) gene. Conclusions: This study shows that, the toxicants present in the beedi that enter into human body causes disturbance to normal state and behavior of the chromosomes which results in reshuffling of hereditary material causing chromosomal aberrations and genomic variations.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1995년도 추계학술대회 논문집
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• pp.224-227
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• 1995

The micro-patterning by a Bow energy FIB whish has been conventionally utilized far mask-repairing was investigated. Amorphous Se$\_$75/Gee$\_$25/ resist irradiated by 9[keV]-defocused Ga$\^$+/ ion beam(∼10$\^$15/[ions/$\textrm{cm}^2$]) resulted in increasing the optical absorption, which was also observed also in the film exposed by an optical dose of 4.5${\times}$10$\^$20/[photons/$\textrm{cm}^2$]. The ∼0.3[eV] edge shift for ion-irradiated film was about twice to that obtained for photo-exposed. These large shift could be estimated as due to an increase in disorder from the decrease in the sloop of the Urbach tail. For Ga$\^$+/ FIB irradiation with a relatively low energy, 30[keV] and above the amount of dose of 1.4${\times}$10$\^$16/[ions/$\textrm{cm}^2$], the irradiated region in a-Se$\_$75/Ge$\_$25/ resist was perfectly etched in acid solution for 10[sec], which is relatively a short development time. A contrast was about 2.5. In spite of the relatively low incident energy,∼0.225[$\mu\textrm{m}$] pattern was clearly obtained by the irradiation of a dose 6.5${\times}$10$\^$16/[ions/$\textrm{cm}^2$] and a scan diameter 0.2[$\mu\textrm{m}$], from which excellent results were expected fur incident energies above 50[keV] which was conventionally used in FIBL.

• 재무관리연구
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• 제20권1호
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• pp.305-329
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• 2003

본 연구는 1987년 1월 5일부터 2001년 12월 28일까지의 일별 및 월별 자료를 가지고 미국 달러화와 일본 엔화가 기업의 주식수익률에 미치는 영향 및 비대칭성을 분석하였다. 일별 자료에 대해서는 오차항의 이분산을 고려해 자기회귀와 GARCH 계열 모형을 사용하였으며, 월별 자료에 대해서는 자기회귀모형을 사용했다. 전체기간 및 하위기간에 대한 분석결과는 일별 자료가 월별 자료에 비해 환노출을 발견하는 데 보다 탁월하다는 것을 보여주고 있다. 또한 EGARCH(1, 1)와 GJR-GARCH(1, 1)로 일별 자료를 분석하는 것이 보다 높은 설명력을 갖는 것으로 나타났다. 한편, 노출된 기업의 대부분에서 음의 환노출이 발견되고 있다. 이는 우리나라 기업의 주식수익률은 환율인상에 대해서는 부정적 영향을, 환율인하에 대해서는 긍정적 영향을 받는 것으로 해석할 수 있다. 비대칭성에 대한 분석 결과는 우리나라 기업은 대부분 비대칭적 환노출에 직면하고 있으며, 실물옵션이론보다는 시장중시가격이론이 보다 설득력이 있다는 결론을 제시해주고 있다. 또한 월별 자료가 일별 자료에 비해 비대칭 분석을 정확히 할 수 있는 것도 발견되었다.

• BMB Reports
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• 제41권5호
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• pp.388-393
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• 2008

The Pphsc70 (heat shock cognate 70) gene was isolated from the endoparasitoid Pteromalus puparum and then characterized. The full-length cDNA was 2204 base pair (bp) and contained a single 1968 bp ORF that encoded a polypeptide of 656 amino acids with a predicted molecular mass of 71.28 kDa. Phylogenetic analysis based on Hsc70 amino acid sequences from fifteen insect species agreed with the present phylogeny. In addition, genomic DNA confirmed the presence of three introns located at the coding region as well as the 5'UTR. A significant elevation of Pphsc70 expression was observed following heat treatment, however, continued exposure to heat shock or recovery caused the expression of induced mRNA to gradually decline to levels that were significantly lower than those of control pupae (P < 0.05). In addition, a significant increase was observed in the emergence rate of pupae that were preheated at $40^{\circ}C$ and then exposed to $50^{\circ}C$ for 1 h when compared with the pupae that were not preheated, but instead directly exposed to $50^{\circ}C$. Taken together, these results revealed that exposure to gradually increasing temperatures can enhance an insects thermo-tolerance.

• Geomechanics and Engineering
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• 제20권2호
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• pp.131-146
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• 2020

Evaluation of earthquake impacts in settlements with a high risk of earthquake occurrence is important for the determination of site-specific dynamic soil parameters and earthquake-resistant structural planning. In this study, dynamic soil properties of Karliova (Bingol) city center, located near to the intersection point of the North Anatolian Fault Zone and the East Anatolian Fault Zone and therefore having a high earthquake risk, were investigated by one-dimensional equivalent linear site response analysis. From ground response analyses, peak ground acceleration, predominant site period, 0.2-sec and 1-sec spectral accelerations and soil amplification maps of the study area were obtained for both near-field and far-field earthquake effects. The average acceleration spectrum obtained from analysis, for a near-field earthquake scenario, was found to exceed the design spectra of the Turkish Earthquake Code and Eurocode 8. Yet, the average acceleration spectrum was found to remain below the respective design spectra of the two codes for the far-field earthquake scenario. According to both near- and far-field earthquake scenarios in the study area, the low-rise buildings with low modal vibration durations are expected to be exposed to high spectral acceleration values and high-rise buildings with high modal vibration durations will be exposed to lower spectral accelerations. While high amplification ratios are observed in the north of the study area for the near-distance earthquake scenario, high amplification ratios are observed in the south of the study area for the long-distance earthquake scenario.

• Animal cells and systems
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• 제13권4호
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• pp.447-452
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• 2009

We cloned the complete complementary DNA (cDNA) of a Pacific oyster (Crassostrea gigas) cytochrome P450 (CYP450)-related protein using rapid amplification of cDNA ends (RACE). The cDNA included a 1470 bp open reading frame that began with the first ATG codon at position 103 bp and ended with a TAG stop codon at position 1573 bp (GenBank accession EF451959). The sequence had all major functional domains and characteristics of previously characterized CYP450 molecules, including the heme-binding region (FGVGRRRCVG) and putative arginine codon (R) integral to enzymatic function. An NCBI/GenBank database comparison to other CYP450 genes revealed that the deduced C. gigas CYP450 amino acid sequence is similar to that of mouse (Mus musculus) CYP450 2D/II (28%, accession AK078880), rabbit (Oryctolagus cuniculus) CYP450 2D/II (28%, AB008785), and white-tufted-ear marmoset (Callithrix jacchus) CYP450 2D (28%, AY082602). Thus, although the C. gigas CYP450 we cloned appears to belong to the 2D type of the CYP450 group, it has low similarity to this type. CYP450 mRNA expression increased over 6 h in C. gigas gills at $30^{\circ}C$ and $10^{\circ}C$, and then decreased, indicating that CYP450 plays an important role in C. gigas exposed to water temperature changes. This finding can be used as a physiological index for Pacific oysters exposed to changing water temperatures.

• Journal of Acupuncture Research
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• 제19권1호
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• pp.175-188
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• 2002

Objective : The effects of SP6(Sanyinjiao, 三陰交) acupuncture stimulation on bladder parasympathetic nerve activity (PNA), tibial nerve activity (TNA) as well as blood pressure were examined in anesthetized rats and the results are as follows. Methods : The parasympathetic nerve leading to the bladder was exposed retroperitoneally, and the tibial nerve in the hindlimb was exposed through inguinal area. PNA and TNA were recorded using a bipolar platinum-iridium wire electrode and it was connected to preamplifier. Blood pressure was measured using cannula that was inserted into femoral artery and was recorded with blood pressure sensor that is connected with transducer amplifier. The mean value of all parameters measured for 30 seconds before the stimulation was expressed as 100%. An acupuncture needle was inserted into the SP6 region to a depth of 4 mm. Results : Under intact state (IS), acupuncture stimulation for 120 seconds induced significant increase of PNA which was accompanied with decrease of blood pressure. At the same time, TNA showed temporary increase only with acupuncture stimulation. In 4 mg/kg of naloxone-administrated state (NAS), significant decrease of PNA was seen and it was accompanied with increase of blood pressure. TNA also showed temporary increase only with acupuncture stimulation under the NAS just like the IS. Conclusion : consider that SP6(Sanyinjiao, 三陰交) acupuncture stimulation activated parasympathetic nerve and caused vasodilation to lead into the diuresis, but naloxone reversed the effect of acupuncture for antidiuresis.