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Search Results: 1 - 10 of 3139 matches for " Mari Ikeda "
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The Experience of Postpartum Depression among Mothers with Withdrawn Attachment Style during Pregnancy and the First Postnatal Month  [PDF]
Mari Ikeda, Momoko Hayashi, Kiyoko Kamibeppu
Open Journal of Depression (OJD) , 2015, DOI: 10.4236/ojd.2015.44008
Abstract: Approximately 19% of women experience minor or major depression in the first three months following childbirth. Most research suggests that women with withdrawn attachment styles are less likely to be depressed. However, unlike mothers in Western culture, mothers in Japan with withdrawn attachment styles are reported to have greater potential to become depressed. Thus, the aim of this study was to describe the behaviors and situational awareness of Japanese mothers’ with withdrawn attachment styles during pregnancy in order to reveal the specific dynamics underlying the withdrawn style. Interview data were analyzed using qualitative thematic content analysis. Of the 84 women assessed, 12 were determined to have a withdrawn style, and based on the Mini-International Neuropsychiatric Interview, five demonstrated the onset of postpartum depression (PPD). Two themes regarding relationships with partners emerged including: 1) confiding behavior: the importance of what is shared; and 2) need to be heard: wanting sympathy rather than criticism. Additionally, three themes describing mothers’ experiences during the first postnatal month emerged: 1) overwhelming experiences: the childbirth experience; 2) seeking help: behavior changes altered relationships; and 3) experience with the baby. Withdrawn style mothers keep distance from crisis, avoid closeness with others, and opt to manage problems by themselves. However, childbirth and infant care are not easily managed in this style. Mothers who used childbirth to confide in their partners may have reduced the severity of insecurity or developed a more secure style. Healthcare professionals are in the best position to develop good relationships with new mothers and provide support that focuses more on emotional factors and self-esteem levels.
The Development and Implementation of the Maternal Mental Health Promotion Program for Expectant Mothers  [PDF]
Mari Ikeda, Kaori Nishigaki, Miharu Kida, Ami Setoyama, Kyoko Kobayashi, Kiyoko Kamibeppu
Open Journal of Nursing (OJN) , 2014, DOI: 10.4236/ojn.2014.413104
Abstract:
Approximately 19% of women have minor or major depression in the first three months following delivery. The Maternal Mental Health Promotion Program is an intervention program designed to deliver during pregnancy to increase awareness and limits the effects of postpartum depression (PPD). The program was developed through a literature review and a focus group interview. It has three components (information on depressive symptoms during postpartum, reflecting on pregnancy, and the importance of good communication with one’s partner), delivered through lectures and group discussions using educational worksheets. The purpose of this paper was to describe the development, planning and implementing of an intervention program for expectant mothers to increase awareness and limits the effects of PPD. The program was evaluated by experienced midwives, and then delivered in antenatal classes where process evaluations were conducted. We confirmed that the objectives of the program were met and that the intervention was relevant to participants.
Sentinel Lymph Node Biopsy as Guidance for Lateral Neck Dissection in Patients with Papillary Thyroid Carcinoma  [PDF]
Yoshifumi Ikeda
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.22012
Abstract: Introduction: The surgical management of lateral lymph nodes in differentiated thyroid carcinoma is controversies. Therefore, we analyzed whether sentinel lymph nodes (SLN) biopsy of the first draining nodes in the jugulo-carotid chain is an accurate technique to select patients with true-positive but nonpalpable lymph nodes for selective lateral node dissection. Materials and Methods: From January 2009 to December 2009, 12 patients with solitary papillary carcinoma measuring 2 cm by ultrasonography were included in this study. After the thyroid gland was exposed to avoid injuring the lateral thyroid lymphatic connection, approximately 0.2 ml of 5mg/ml indocyanine green was injected into the parenchyma of upper and lower thyroid gland. Some stained lymph nodes in the jugulo-carotid chain could be identified following the stained lymphatic duct and dissected as the SLN. After that, thyroidectomy with modified neck dissection was performed. Results: The mean tumor size was 22.1 ± 4.6 mm. Identification and biopsy of stained SLN in the ipsilateral jugulo-carotid chain was successful in all 12 cases. In 6 cases, histopathological analysis of SLNs revealed metastases of the papillary thyroid carcinoma. Among them, 2 cases had additional metastatic lymph nodes in the ipsilateral compartment. Of the 6 patients who had negative lymph node metastasis (LNM) in SLNs, all patients had negative LNM in the ipsilateral compartment. Conclusions: The method may be helpful in the detection of true-positive but nonpalpable lymph nodes and may support a decision to perform a selective lateral node dissection in patients with papillary thyroid carcinoma.
The Function of Roots of Tea Plant (Camellia sinensis) Cultured by a Novel Form of Hydroponics and Soil Acidification  [PDF]
Kieko Saito, Masahiko Ikeda
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.35078
Abstract: A novel form of hydroponic culture was employed to explore the physiological function of roots of a tea plant (Camellia sinensis). The pH of the nutrient solution with an actively growing tea plant decreased during cultivation. Furthermore, no oxalic acid, tartaric acid, malic acid or citric acid, all possible factors in acidification, was detected in the nutrient solution of a growing plant. A proton pump inhibitor suppressed the acidification of the solution. Soil acidification might have been accelerated with a proton released from ammoniacal nitrogen preferentially for the growth, suggesting the specific mechanism of tea plant as a functional food.
Regional Mapping of Vertical Hydraulic Gradient Using Uncertain Well Data: A Case Study of the Toyohira River Alluvial Fan, Japan  [PDF]
Yoshitaka Sakata, Ryuji Ikeda
Journal of Water Resource and Protection (JWARP) , 2013, DOI: 10.4236/jwarp.2013.58083
Abstract:

Vertical hydraulic gradient (VHG) provides detailed information on 3D groundwater flows in alluvial fans, but its regional mapping is complicated by a lack of piezometer nests and uncertainty in conventional well data. Especially, determining representative depth of well screen in each well is problematic. Here, a VHG map of the Toyohira River alluvial fan, Sapporo, Japan, is constructed based on groundwater table elevation (GTE), using available well-data of various screen lengths and depths. The water-level data after 1988, when subway constructions are mostly completed in the city, are divided into those of shallow wells (≤20 m deep), and those of deep wells (>20 m deep). First, the GTE map is generated by kriging interpolation of shallow well data with topographic drift. Next, the individual VHG value of each deep well is calculated using its top, middle, and bottom elevations of the screen depths, respectively. The VHG maps of three cases are then obtained using neighborhood kriging. The VHG map of the bottom screen depths has proven most valid by cross-validation. The VHG map better visualizes that downward flows of groundwater are predominant over the fan. Positive area of VHG is mostly vanished around the fan-toe, indicating urbanization effect such as artificial withdrawals. A negative peak of VHG corresponds to recharge area, and is seen along the distinct losing section in the river. The negative peak also expands upstream to the fan-apex where a basement is suddenly depressed.

Exchange Rate and Current Account Dynamics with Habits over Consumption and Money Holdings  [PDF]
Ichiro Gombi, Shinsuke Ikeda
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.47051
Abstract:

Incorporating two independent habits over consumption and money holdings into a small country model, we examine the adjustment dynamics of the current account and the exchange rate to expansionary monetary and fiscal shocks under two alternative policy regimes: (1) the endogenous income transfer regime; and (2) the endogenous fiscal spending regime. In response to the shocks under regime (1), the exchange rate depreciates on impact and in the long run whereas it appreciates (depreciates) in transition if preferences for real money balances exhibit distant (adjacent) complementarity. Under regime (2), the consumption habits and the monetary habits jointly generate possibly non-monotonic current account dynamics. An induced increase in fiscal spending in regime (2) can generate a current account surplus in the case where the monetary habits exhibit strong distant complementarity.

Fabrication and Characterization of Porous Silica Monolith by Sintering Silica Nanoparticles  [PDF]
Hiroshi Ikeda, Shigeru Fujino
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2017, DOI: 10.4236/jmmce.2017.53009
Abstract: This paper aims to fabricate over centimeter size of porous silica monolith having meso-pores with large surface area. A precursor of porous silica monolith was obtained by sintering a monolithic SiO2-poly (vinyl alcohol) (PVA) nanocomposite at 600oC-1100oC. The sintering behavior was examined by means of Raman spectroscopy and a porosimetry. The PVA of the SiO2-PVA nanocomposite was combusted below 600oC, subsequently the silica nanoparticles of the nanocomposite were sintered above 900oC. The Raman spectroscopy suggested that amorphous structure of the porous silica monolith obtained above 1000oC was similar to that of a silica glass. The BET surface area and pore radius of the porous silica monolith decreased with increasing sintering temperature. These values were tailored in the range of ca. 0-291 m2.g-1 and 5-25 nm, respectively, by controlling the sintering temperature and time. The fabricated porous-silica monolith was translucent or opaque porous-silica depending on the pore size.
Should We Enhance or Restrict Technological Diffusion from Major to Minor Firms?  [PDF]
Hideki Nakamura, Takeshi Ikeda
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.811146
Abstract: This study examines how technological diffusion from a major firm to a minor firm affects social welfare via R & D competition in an asymmetric Cournot duopoly. We assume that the minor firm can decrease its production cost because of the spillover effect arising through R & D by the major firm. R & D by the minor firm depends on the free-riding effect and a taking-away effect that removes market share from the major firm. If given a low R & D cost, both firms invest in R & D with an appropriate level of technological diffusion, we can obtain a high level of social welfare. However, an increase in the level of technological diffusion could make the major firm abandon R & D activity. Given a high R & D cost, a high level of welfare can be obtained only with a low level of technological diffusion because the potential presence of technological diffusion easily disrupts R & D by the major firm.
One-dimensional Kac model of dense amorphous hard spheres
Harukuni Ikeda,Atsushi Ikeda
Physics , 2015, DOI: 10.1209/0295-5075/111/40007
Abstract: We introduce a new model of hard spheres under confinement for the study of the glass and jamming transitions. The model is an one-dimensional chain of the $d$-dimensional boxes each of which contains the same number of hard spheres, and the particles in the boxes of the ends of the chain are quenched at their equilibrium positions. We focus on the infinite dimensional limit ($d \to \infty$) of the model and analytically compute the glass transition densities using the replica liquid theory. From the chain length dependence of the transition densities, we extract the characteristic length scales at the glass transition. The divergence of the lengths are characterized by the two exponents, $-1/4$ for the dynamical transition and $-1$ for the ideal glass transition, which are consistent with those of the $p$-spin mean-field spin glass model. We also show that the model is useful for the study of the growing length scale at the jamming transition.
IL-12 and IL-18 Induction and Subsequent NKT Activation Effects of the Japanese Botanical Medicine Juzentaihoto
Kazuhiko Fujiki,Masanori Nakamura,Takako Matsuda,Mariko Isogai,Minako Ikeda,Yutaka Yamamoto,Mari Kitamura,Naoko Sazaki,Fumiatsu Yakushiji,Shinji Suzuki,Junji Tomiyama,Takashi Uchida,Ken Taniguchi
International Journal of Molecular Sciences , 2008, DOI: 10.3390/ijms9071142
Abstract: In this study, we first measured some cytokine concentrations in the serum of patients treated with Juzentaihoto (JTT). Of the cytokines measured interleukin (IL) -18 was the most prominently up-regulated cytokine in the serum of patients under long term JTT administration. We next evaluated the effects of JTT in mice, focusing especially on natural killer T (NKT) cell induction. Mice fed JTT were compared to control group ones. After sacrifice, the liver was fixed, embedded and stained. Transmission electron microscope (TEM) observations were performed. Although the mice receiving the herbal medicine had same appearance, their livers were infiltrated with massive mononuclear cells, some of which were aggregated to form clusters. Immunohistochemical staining revealed that there was abundant cytokine expression of IL-12 and IL-18 in the liver of JTT treated mice. To clarify what the key molecules that induce immunological restoration with JTT might be, we next examined in vitro lymphocyte cultures. Mononuclear cells isolated and prepared from healthy volunteers were cultured with and without JTT. Within 24 hours, JTT induced the IL-12 and IL-18 production and later (72 hours) induction of interferon (IFN)-gamma. Oral administration of JTT may induce the expression of IL-12 in the early stage, and IL-18 in the chronic stage, followed by NKT induction. Their activation, following immunological restoration could contribute to anti-tumor effects.
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