Electroless Deposition of Silver on Multiwalled Carbon Nanotubes Using Iodide Bath

Electroless deposition of silver on multiwalled carbon nanotubes (MWCNTs) was investigated using an iodide bath. Prior to electroless deposition of silver, the MWCNTs were chemically oxidized and then pre-treated using a typical two-step method (sensitization and activation) to form catalytic palladium nuclei on the MWCNTs. Dimethylaminoborane (DMAB) was used to reduce silver ions. Electroless deposition of silver was carried out at 25 degrees C with variation of the pH. The microstructure of the deposits was evaluated using field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The silver iodide complex ion species present was determined to be AgI(4)(3-) from equilibrium potential measurements. Silver was selectively deposited on palladium nuclei on the surface of the MWCNTs and continuous diffusion of deposited silver and palladium nuclei resulted in a solid solution of Ag-Pd alloy particles on the MWCNTs at pH = 7.5.ArticleJOURNAL OF THE ELECTROCHEMICAL SOCIETY 158: D506-D510(2011)journal articl

Superfluidity and BEC of liquid 4He confined in a nanometer-size channel

We have studied the heat capacity and superfluidity of liquid 4He confined in a uniform and straight nanometer-size channel. The heat capacity of liquid 4He in the channel has a bend at a certain temperature TB; below this temperature a small amount of the superfluid fraction appears. This means that 4He atoms enter a BEC-like low-entropy state below TB. Additionally, the superfluid fraction showed a second growth far below TB under low pressure, accompanied by the dissipation. This two-stage growth is possibly a feature of the quasi-one-dimensional system

On simultaneous approximation to (α,α2) with α3+kα−1=0

AbstractWe show that the modified Jacobi–Perron algorithm gives the best simultaneous approximation to (α,α2) with α3+kα−1=0. We claim the following facts: (1)the limit set of {(qn(qnα−pn),qn(qnα2−rn)|n=1,2,…} become an ellipse, where (pn,qn,rn) is the nth convergent (pn/qn,rn/qn) of (α,α2) by the modified Jacobi–Perron algorithm,(2)the limit set of {(q(qα−p),q(qα2−r)|q∈Z,q>0} belongs to outside of the ellipse in (1)

Character, Habit and Taste of woman with coldeness in their bodies

冷え性の発現は寒冷刺激に対する血管運動性体温調節と密接に関係しているが,患者の性格･生活習慣･食事の嗜好等にも関わっていると考えられる｡そこで今回は冷え性婦人100名を対象にCMl調査と35項目にのぼるアンケート調査を行った｡その結果,冷え性の増悪因子として,日頃の運動不足･神経症的性格傾向･過労･食べ物の嗜好がクローズアップされ,この面での生活指導が冷え性の治療を行っていく上で,薬物的な治療と並んで重要であることか示唆された。The character, habit and taste were studied about by means of a questionnaire survey and Cornell Medical Index in 100 women who felt cold in their part of bodies. More than 30% of the women showed the neurotic personality, They had a tendency to dislike the greasy foods, and frequently had sweet foods. More than 50% of them ordinally complained of shoulder stiffness and generalfatigue. The women who played sports weekly were less than 20%. The neurotic porsonality, the tendency to dislike the greasy foods and the lack of exercise were seemed to be the feature of their character, taste, and habit. Thus, improvement of their personality and life style may have a good effect on the coldness in women

Electroless Deposition of Silver on Multiwalled Carbon Nanotubes Using Iodide Bath

Electroless deposition of silver on multiwalled carbon nanotubes (MWCNTs) was investigated using an iodide bath. Prior to electroless deposition of silver, the MWCNTs were chemically oxidized and then pre-treated using a typical two-step method (sensitization and activation) to form catalytic palladium nuclei on the MWCNTs. Dimethylaminoborane (DMAB) was used to reduce silver ions. Electroless deposition of silver was carried out at 25 degrees C with variation of the pH. The microstructure of the deposits was evaluated using field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The silver iodide complex ion species present was determined to be AgI(4)(3-) from equilibrium potential measurements. Silver was selectively deposited on palladium nuclei on the surface of the MWCNTs and continuous diffusion of deposited silver and palladium nuclei resulted in a solid solution of Ag-Pd alloy particles on the MWCNTs at pH = 7.5.ArticleJOURNAL OF THE ELECTROCHEMICAL SOCIETY 158: D506-D510(2011)journal articl

The efficacy of maternity swimming to reduce mother's weight

第1報において妊婦水泳に関する妊婦の認識について報告し (1) ,第2報において妊婦水泳の現状とその適応について報告した (2) ｡その後,第3報において妊婦水泳が母児の循環系におぼす影響について報告し (3) ,第4報にて出産後1年間の児の予後調査を行った (4) 。今回は,妊婦水泳による体重減少効果について検討を行った。その結果,妊婦水泳前後で平均460gの体重減少がみられた｡また水泳を10回以上行った妊婦において,水泳を行っている期間の体重増加が水泳を行っていない期間の体重増加に比べて有意に少なかった｡これより,妊婦水泳には一定の減量効果があり,肥満妊婦の治療にも応用できると考えられた。The efficacy of awimming to reduce mother's weight were studided retrospectively in 107 women. Each time they swum for a hour. They were given a chance of swimming at only one time in a week. Most of them reduced their weight after the swimming. The average of the weight loss was 460 gram after each time of swimming. In women who had a chance of swimming at ten times or more, the mother's weight gain in a week when they had a chance of swimming, was statistically (p<0.01) less than the weight in a week when they didn't swim. Thus, the maternity swimming was thought to have the efficacy to reduce mother's weight. If the maternlty swimming is clinically applied for the treatment of obese pregnant women, their weight will reduce efficiently

Clinicopathological Evaluation of Papillary Thyroid Microcarcinoma

BACKGROUND AND AIMS: Clinicians sometimes encounter papillary thyroid microcarcinoma (PMC) that is less than 10 mm, associated with lymph node metastasis. In this study, we assessed PMC clinicopathologically to clarify risk factors for poor prognosis. PATIENTS AND METHODS: Fifty-one patients who underwent thyroid surgery at Aichi Medical University from September 2009 to October 2016 were included. Patients were divided into two groups, pEX-positive (23 patients) and pEX-negative (28 patients), based on the pathological finding of thyroid capsule invasion. The former indicates that the tumor infiltrated the thyroid capsule and spread to the neighboring tissue, and the latter indicates no capsule invasion. We analyzed factors such as patient characteristics, pathological findings, and serum levels of thyroid hormones in the two groups. RESULTS: No statistical differences were observed between the two groups in gender distribution or age at surgery. Preoperative cancer diagnoses were established for more patients in the pEX-positive group than in the pEX-negative group (n = 21 and 14, respectively; P = 0.004). The mean (±SD) pathological tumor diameter was 5.42 ± 2.77 in the pEX-negative group and 8.32 ± 1.61 in the pEX-positive group (P \u3c 0.001). No significant differences in preoperative serum levels of free T3, free T4, thyroid-stimulating hormone, or thyroglobulin were observed between the two groups. The odds ratio for node positivity in tumors invading thyroid capsules (pEX-positive) compared to those with no capsule invasion (pEX-negative) was 13.20 (95% confidence interval, 3.45-50.42). Immunohistological staining for phosphatase and tensin homolog deleted from chromosome 10 (PTEN) and Akt (protein kinase B) revealed the facilitation of PTEN and suppression of Akt, which might indicate downregulation of the phosphoinositide 3-kinase-Akt (PI3K-Akt) cascade. DISCUSSION: In general, the prognosis of PMC is favorable. However, the prognosis is less favorable in patients with nodal metastasis or extrathyroidal invasion. It is controversial whether resection is required for proven PMCs. For PMCs associated with extrathyroidal invasion, regional lymph node resection with lobectomy should be performed due to the high risk for lymphatic spread. There might be a possibility that the natural progression of PMC seems to be controlled by the facilitation of PTEN. However, a tumor in the lateral peripheral region of the thyroid parenchyma might be associated with capsule invasion followed by lymphatic spread

Maternity swimming at M isasa Hospital of Okayama University Medical School-Fourth report. The growth and development of babies who were born from the mothers who experienced the maternity swimming

第1報において妊婦水泳に関する妊婦の認識について報告し，第2報において妊婦水泳の現状とその適応について報告し，第3報にて妊婦水泳が循環器系に与える影響について報告した。今回は，母親が妊婦水泳を行い出生後1年以上経過した児の発育，発達状況についてアンケート調査を行った。その結果，発育e発達状況は艮好であった。現時点で全例正常な発達をしていた。このことより我々の行っている妊婦水泳は児の発育，発達に悪影響を及ぼさないことが確かめられた。Seventy babies were born from the mothers who experienced maternity swimming in our hospital. The growth and development of 31 babies that were over 1 years old were investigated by means of a questionnaire survey. 62.5% of the total were answered. This survey showed that no babies had problems with their growth and development. These results suggest that maternal Swimmingmight have no hazardous effects on the fetus

Three Dimensional Motion Analysis of Hand Tremors During Endoscopic Ear Surgery

[Background] Endoscopic surgery is developing in various clinical specialties. During ear endoscopic surgery, a surgeon has to hold an endoscope with one hand and operate the surgical instruments with another hand. Therefore, the stability of the surgeon’s hand affects the field of surgical view and quality of the surgery considerably. There are few techniques which are used during surgery to stabilize the endoscope. However, no study has evaluated the efficacy of such techniques in detail. This study examined the three dimensional movement of an endoscope to compare and evaluate the effect of various stabilization techniques to reduce the hand tremor while using the endoscope. [Methods] A non-randomized controlled trial involving 15 medical students was conducted in Tottori University, Japan. Subjects held an endoscope with their non-dominant hand and manipulated it using three different stabilization techniques i.e. with resting the elbow on the table, resting the endoscope on the ear canal, both with the elbow on the table and endoscope on the ear canal. For the control, subjects were made to use the endoscope without any stabilization technique. The endoscopic movement was measured with and without using the stabilization techniques. [Results] The results obtained in this study indicated that manipulating the endoscope with resting the elbow on the table restrains both vertical (Y-axis) and optical axis (Z-axis) direction of tremor, and manipulating the endoscope by resting it on the ear canal restrains both vertical (Y-axis) and horizontal axis (X-axis) direction while the combined use of both the techniques reduces the endoscope movement in all the three X, Y and Z axes. [Conclusion] In conclusion, concomitant use of both techniques appears to be clinically beneficial in endoscopic ear surgery

Loss of IL-33 enhances elastase-induced and cigarette smoke extract-induced emphysema in mice

Background IL-33, which is known to induce type 2 immune responses via group 2 innate lymphoid cells, has been reported to contribute to neutrophilic airway inflammation in chronic obstructive pulmonary disease. However, its role in the pathogenesis of emphysema remains unclear. Methods We determined the role of interleukin (IL)-33 in the development of emphysema using porcine pancreas elastase (PPE) and cigarette smoke extract (CSE) in mice. First, IL-33(-/-) mice and wild-type (WT) mice were given PPE intratracheally. The numbers of inflammatory cells, and the levels of cytokines and chemokines in the bronchoalveolar lavage (BAL) fluid and lung homogenates, were analyzed; quantitative morphometry of lung sections was also performed. Second, mice received CSE by intratracheal instillation. Quantitative morphometry of lung sections was then performed again. Results Intratracheal instillation of PPE induced emphysematous changes and increased IL-33 levels in the lungs. Compared to WT mice, IL-33(-/-) mice showed significantly greater PPE-induced emphysematous changes. No differences were observed between IL-33(-/-) and WT mice in the numbers of macrophages or neutrophils in BAL fluid. The levels of hepatocyte growth factor were lower in the BAL fluid of PPE-treated IL-33(-/-) mice than WT mice. IL-33(-/-) mice also showed significantly greater emphysematous changes in the lungs, compared to WT mice, following intratracheal instillation of CSE. Conclusion These observations suggest that loss of IL-33 promotes the development of emphysema and may be potentially harmful to patients with COPD