远程卸压瓦斯抽放数值模拟

利用新近开发的含瓦斯煤岩破裂过程固气耦合作用的F -RFPA2D数值模拟工具 ,模拟了潘一矿在下煤层开采过程中上覆岩层的移动、垮落的全过程 ,以及由于下煤层开采所诱发的上煤层 (主采煤层 )透气性演化过程 ,并对采动影响下煤层瓦斯抽放时瓦斯的流动运移规律进行了初步的数值模拟研究。模拟结果同现场工程实际比较吻合 ,表明利用F -RFPA来研究煤矿开采所诱发的煤层透气性演化和瓦斯运移等工程实际问题是可行的

10. 昭和21年3月の櫻島噴火

The volcano Sakura-zima began its activities early in March, 1946, and became calm late in May the same year. During that period, about two, and a half months, the volcano kept on smoking and welled out large quantity of fresh lava. Recieving the news of the eruption the writers went to the island carring with them four portable seismometers, a precise spirit level, a reflection telecamera and other instruments. Two of them stayed there to continue obsary ations and surveys of the eruptional phenomena till April 25

10. The Erup\u27ion of Mt. Sakura-Zima in 1946

The volcano Sakura-zima began its activities early in March, 1946, and became calm late in May the same year. During that period, about two, and a half months, the volcano kept on smoking and welled out large quantity of fresh lava. Recieving the news of the eruption the writers went to the island carring with them four portable seismometers, a precise spirit level, a reflection telecamera and other instruments. Two of them stayed there to continue obsary ations and surveys of the eruptional phenomena till April 25

Glucose Intolerance and Hypoxia in Tibetan Highlanders : Review on Verification of Diabetes Acceleration Hypothesis

特集2: 総合地球環境学研究所「高所プロジェクト」特集 = Special Issue 2: The High Altitude Project in Research Institute for Humanity and Nature本稿は, 高所プロジェクトの提唱してきた「糖尿病アクセル仮説」の一部について検証した科学論文 (Glucose intolerance associated with hypoxia in people living at high altitudes in the Tibetan highland. BMJ open 2016) のレビューである。耐糖能障害がライフスタイルと低酸素血症といかに関連するかを, 中国からインドにわたるチベット高原 (2900-4800m) の1258人の住民において研究された。社会経済的要因, 高度3500m 以上在住, および低酸素血症が, 高所住民の耐糖能異常の増加に大きく関与していることが報告された。低酸素血症, 多血症, 耐糖能異常の3者には密接な関係があり, 加齢とライフスタイル変化がその関係を促進している (糖尿病アクセル仮説) ことが検証された。The association between glucose intolerance and high altitudes (2900-4900m) was clarified in Tibetan highlanders. The hypothesis was verified that dwelling at high altitudes have vulnerability to diabetes accelerated by lifestyle change or aging. 1258 subjects (40-87 years) were examined; farmers in Domkhar (2900-3800m), nomads in Haiyan, Ryuho, and Changthang (3000-4800m), and urban dwellers in Leh and Jiegu (3300-3700m). The prevalence of glucose intolerance was higher in urban dwellers and in farmers compared with nomads. Dwelling at a higher altitude was significantly associated with fasting hyperglycemia (odds ratios for >4500 and 3500-3999m were 3. 59 and 2. 07 vs 1.0 ; <3500m) by multiple logistic regression analysis with adjustment of age, sex, and confounding factors. Further hypoxemia and polycythemia were closely associated with glucose intolerance. Socioeconomic factors, hypoxemia, and the effects of altitudes over 3500m play a major role in the high prevalence of glucose intolerance in highlanders. Tibetan highlanders may be vulnerable to glucose intolerance, with polycythemia as a sign of poor hypoxic adaptation, accelerated by lifestyle change and aging