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Ita Marlita Sari,Asri C,Adisasmita,Sabarinah Prasetyo,Dwirani Amelia,Ratih Purnamasari 한국역학회 2020 Epidemiology and Health Vol.42 No.-
OBJECTIVES: The global prevalence of preterm labor is approximately 11.1% of live births. However, preterm labor contributes to 75-80% of neonatal morbidity and mortality. The morbidity experienced by preterm infants may continue to influence their subsequent development, imposing physical, psychological, and economic burdens. Premature rupture of membranes (PROM) is a causal factor that may affect preterm birth. Previous studies have shown an association between PROM and preterm labor, but this association should be investigated in more diverse populations. Therefore, this study was conducted in Cilegon, Indonesia to determine the magnitude of the risk of preterm labor associated with PROM at Cilegon Hospital from July 2014 to December 2015. METHODS: This case-control study used data from patients’ medical records. The cases were all mothers who delivered at less than 37 weeks of gestation, while the control population comprised all mothers who delivered at greater or equal to 37 weeks. The data were analyzed using logistic regression. RESULTS: The bivariate analysis yielded an odds ratio (OR) of 2.97 (95% confidence interval [CI], 1.92 to 4.59) before controlling for covariates. The model derived through multiple regression analysis after controlling for education, history of preterm labor, and anemia resulted in an OR of 2.58 (95% CI, 1.68 to 3.98). CONCLUSIONS: Mothers who experience PROM during pregnancy were at a 2.58 times higher risk of preterm labor after controlling for education, history of preterm labor, and anemia.
Ita, Yoshifusa,Kato, Daisuke,Onaka, Takashi,AKAR.LMC survey team The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4
We observed an area of 10 $deg^2$ of the Large Magellanic Cloud using the Infrared Camera (IRC) onboard AKARI. The observations were carried out using five imaging filters (3, 7, 11, 15, and $24{\mu}m$) and the prism disperser ($2-5{\mu}m$, ${\lambda}/{\Delta}{\lambda}{\sim}20$) equipped in the IRC. This paper presents an outline of the survey project and also describes very briefly the newly compiled near- to mid-infrared point source catalog. The $10{\sigma}$ limiting magnitudes are 17.9, 13.8, 12.4, 9.9, and 8.6 mag at 3.2, 7, 11, 15 and $24{\mu}m$, respectively. The photometric accuracy is estimated to be about 0.1 mag at $3.2{\mu}m$ and 0.06 - 0.07 mag in the other bands. The position accuracy is 0.3" at 3.2, 7 and $11{\mu}m$ and 1.0" at 15 and $24{\mu}m$. The sensitivities at 3.2, 7, and $24{\mu}m$ are roughly comparable to those of the Spitzer SAGE LMC point source catalog, while the AKARI catalog provides the data at 11 and $15{\mu}m$, covering the near- to mid-infrared spectral range continuously.
AKARI INFRARED CAMERA SURVEY OF THE LARGE MAGELLANIC CLOUD. I. POINT-SOURCE CATALOG
Kato, Daisuke,Ita, Yoshifusa,Onaka, Takashi,Tanabé,, Toshihiko,Shimonishi, Takashi,Sakon, Itsuki,Kaneda, Hidehiro,Kawamura, Akiko,Wada, Takehiko,Usui, Fumihiko,Koo, Bon-Chul,Matsuura, Mikako,Tak American Institute of Physics 2012 The Astronomical journal Vol.144 No.6
<P>We present a near- to mid-infrared point-source catalog of five photometric bands at 3.2, 7, 11, 15, and 24 μm for a 10 deg<SUP>2</SUP> area of the Large Magellanic Cloud (LMC) obtained with the Infrared Camera on board the AKARI satellite. To cover the survey area the observations were carried out at three separate seasons from 2006 May to June, 2006 October to December, and 2007 March to July. The 10σ limiting magnitudes of the present survey are 17.9, 13.8, 12.4, 9.9, and 8.6 mag at 3.2, 7, 11, 15, and 24 μm, respectively. The photometric accuracy is estimated to be about 0.1 mag at 3.2 μm and 0.06-0.07 mag in the other bands. The position accuracy is 0<img entity='farcs' SRC='http://ej.iop.org/icons/Entities/farcs.gif' ALT='farcs' ALIGN='BOTTOM' />3 at 3.2, 7, and 11 μm and 1<img entity='farcs' SRC='http://ej.iop.org/icons/Entities/farcs.gif' ALT='farcs' ALIGN='BOTTOM' />0 at 15 and 24 μm. The sensitivities at 3.2, 7, and 24 μm are roughly comparable to those of the Spitzer SAGE LMC point-source catalog, while the AKARIcatalog provides the data at 11 and 15 μm, covering the mid-infrared spectral range contiguously. Two types of catalog are provided: a Catalog and an Archive. The Archive contains all the detected sources, while the Catalog only includes the sources that have a counterpart in the Spitzer SAGE point-source catalog. The Archive contains about 650,000, 140,000, 97,000, 43,000, and 52,000 sources at 3.2, 7, 11, 15, and 24 μm, respectively. Based on the catalog, we discuss the luminosity functions at each band, the color-color diagram, and the color-magnitude diagram using the 3.2, 7, and 11 μm band data. Stars without circumstellar envelopes, dusty C-rich and O-rich stars, young stellar objects, and background galaxies are located at distinct regions in the diagrams, suggesting that the present catalog is useful for the classification of objects toward the LMC.</P>
Edu Inam,Joseph Essien,Basil Ita,Helen Etuk,김경웅 한국자원공학회 2012 Geosystem engineering Vol.15 No.1
The mangrove oyster: Crassostrea rhizophorae was harvested from clutches associated with mangroves in the Qua Iboe Estuary and adjoining creeks to determine the concentrations of total petroleum hydrocarbons (TPH) and trace metals (Fe, Ni, Pb, Cr, V, Cu, and Zn) and to understand their bioaccumulation status. The mean concentrations of trace metals in C. rhizophorae were 36.06 mg·kg-1 for Fe, 0.58 mg·kg-1 for Ni, 0.05 mg·kg-1 for Pb, 0.66 mg·kg-1 for Cr, 0.32 mg·kg-1 for V, 6.70 mg·kg-1 for Cu, and 3.93mg·kg-1 for Zn. The oysters demonstrated relative affinity for accumulation of Fe, Cu, and Zn, and the relative status of the metals accumulated, in comparison with the background trace metal load, revealed bio-concentration factors of 0.024, 0.016, 0.004, 0.213, 0.037, 0.302, and 0.036 for Fe, Ni, Pb, Cr, V, Cu, and Zn, respectively. The concentrations of TPH in the oyster were highly variable and ranged between 6.37 and 8.44 mg·kg-1 dry weight of C. rhizophorae. Although the correlation between TPH levels in intertidal (epipelic) sediment and oyster specimens was positive (r = 0.097), it was not significant (p > 0.05). However, the relationship between TPH and trace metal levels in C. rhizophorae revealed well-fitting linear models that indicated that the trace metals originated from petrogenic sources. Although the levels of TPH and trace metals in the oyster were within permissible levels, they might affect calcium metabolism and the general productivity of the shellfish. The recorded levels are also indicative of long-term and chronic accumulation of hydrocarbons in the estuarine ecosystem and potential risk to human health.
Cancer Stem Cells (CSCs) in Drug Resistance and their Therapeutic Implications in Cancer Treatment
Phi, Lan Thi Hanh,Sari, Ita Novita,Yang, Ying-Gui,Lee, Sang-Hyun,Jun, Nayoung,Kim, Kwang Seock,Lee, Yun Kyung,Kwon, Hyog Young Hindawi 2018 Stem cells international Vol.2018 No.-
<P>Cancer stem cells (CSCs), also known as tumor-initiating cells (TICs), are suggested to be responsible for drug resistance and cancer relapse due in part to their ability to self-renew themselves and differentiate into heterogeneous lineages of cancer cells. Thus, it is important to understand the characteristics and mechanisms by which CSCs display resistance to therapeutic agents. In this review, we highlight the key features and mechanisms that regulate CSC function in drug resistance as well as recent breakthroughs of therapeutic approaches for targeting CSCs. This promises new insights of CSCs in drug resistance and provides better therapeutic rationales to accompany novel anticancer therapeutics.</P>
Analysis of Nigeria Research Reactor-1 Thermal Power Calibration Methods
Sunday Arome Agbo,Yusuf Aminu Ahmed,Ita Okon Bassey Ewa,Yahaya Jibrin 한국원자력학회 2016 Nuclear Engineering and Technology Vol.48 No.3
This paper analyzes the accuracy of the methods used in calibrating the thermal power ofNigeria Research Reactor-1 (NIRR-1), a low-power miniature neutron source reactor locatedat the Centre for Energy Research and Training, Ahmadu Bello University, Zaria, Nigeria. The calibration was performed at three different power levels: low power (3.6 kW), halfpower (15 kW), and full power (30 kW). Two methods were used in the calibration, namely,slope and heat balance methods. The thermal power obtained by the heat balance methodat low power, half power, and full power was 3.7 ± 0.2 kW, 15.2 ± 1.2 kW, and 30.7 ± 2.5 kW,respectively. The thermal power obtained by the slope method at half power and full powerwas 15.8 ± 0.7 kW and 30.2 ± 1.5 kW, respectively. It was observed that the slope method ismore accurate with deviations of 4% and 5% for calibrations at half and full power,respectively, although the linear fit (slope method) on average temperature-rising ratesduring the thermal power calibration procedure at low power (3.6 kW) is not fitting. Assuch, the slope method of power calibration is not suitable at lower power for NIRR-1.
Bassey Sunday Antia,Basil Nse Ita,Uwemedimo Emmanuel Udo 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.5
The stembarks of Harungana madagascariensis were analyzed for their content of chemical constituents, antinutrients, vitamin levels, and in vitro antioxidant properties in two solvent systems. Phytochemical screening revealed higher levels of alkaloids, saponins, and flavonoids in the methanolic (MHM) extract than in the dichloromethane (DCM) extract. The methanolic extract had higher contents of minerals, vitamins, and antinutrients except K, vitamin B1, and phytic acid, respectively. Antioxidant potentials of the stembark extracts were assessed by the 1, 1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, metal chelating activity, and ferric reducing power. The methanolic extract showed a better antioxidant activity (IC50 = 87.66 ± 0.97 μg/mL) in the DPPH system. The metal chelating activity was higher in the methanolic extract (92.4% at 20 mg/mL), but lower than the control ethylenediaminetetraacetic acid (EDTA). The methanolic extract also showed greater ferric reducing power and was richer in phenolics (132.24 ± 0.61 mgGAE/g) and flavonoids (259.05 ± 2.85 mgQE/g). Antinutrient analysis of the extracts indicated low levels of phytic acid, oxalates, and hydrocyanides below the lethal doses. The LD50 (i.p. mice) of the extracts showed relatively low toxicity in the range 1000–1414 mg/kg. These results support the ethnomedicinal uses of this plant in the treatment of diseases related to oxidative stress and suggest that consumption of H. madagascariensis is not harmful nutritively.