Relationship between Serum Osteocalcin Levels and Non-Alcoholic Fatty Liver Disease in Adult Males,South China

AIM

To determine serum osteocalcin levels in South Chinese males with non-alcoholic fatty liver disease (NAFLD) and to examine the relation between serum osteocalcin and NAFLD.

METHODS

Data were collected from 1683 men attending the Fangchenggang Area Male Healthy and Examination Survey (FAMHES) from September 2009 to December 2009. Serum osteocalcin was measured with electrochemiluminescence immunoassay. An abdominal ultrasonographic examination for all individuals was performed by two experienced ultrasonographers. The associations of serum osteocalcin with NAFLD were evaluated.

RESULTS

The levels of serum osteocalcin were lower in 364 NAFLD participants than in 1319 non-NAFLD participants (24.51 ± 1.38 ng/mL vs. 20.81 ± 1.33 ng/mL, p < 0.001). Serum osteocalin level was associated with the scale of NAFLD (r = −0.150, p < 0.01). Serum osteocalin level tended to decrease with the scale of NAFLD. Binary logistic regression analysis showed that decreased ORs for NAFLD were observed from the first to the fourth osteocalcin quartiles.

CONCLUSIONS

Our findings suggest that a lower serum osteocalcin level is associated with the presence of NAFLD.     

直流X射线模拟电缆X射线响应的可行性

本文对电缆X射线辐照响应的机理和模拟方法进行了研究,分析了电缆直流和脉冲X射线辐照响应的异同。建立了带状电缆X射线辐照响应一维计算模型,该模型包含电缆屏蔽层和介质层间隙、介质层瞬态辐射感应电导率等计算模型,模拟了带状电缆直流和脉冲X射线辐照电流响应。模拟结果表明,在X射线注量相同的条件下,电缆直流和方波脉冲X射线响应具有类似的波形特征及相同的间隙电压。因此,在该计算模型描述的电缆X射线辐照响应机制下,可利用直流X射线开展相应的脉冲X射线辐照响应机制模拟。     

Effects of M 23C6 on the High-Temperature Performance of Ni-Based Welding Material NiCrFe-7

The effects of M ₂₃C₆ (M = Cr, Fe) on the high-temperature performance of the NiCrFe-7 welding rods and weld metals were studied by high-temperature tensile tests and microstructure analysis. M ₂₃C₆ at the grain boundaries (GBs) has a cube-on-cube coherence with one grain in the NiCrFe-7 weld metals, and the adjacent M ₂₃C₆ has the coherence relationship with the same grain. The grain with a coherent M ₂₃C₆ has a Cr-depletion region. The number and size of M ₂₃C₆ particles can be adjusted by heat treatment and alloying. There are two temperatures [T _E1: 923 K to 1083 K (650 °C to 810 °C) and T _E2: 1143 K to 1203 K (870 °C to 930 °C)] at which the GBs and grains of the NiCrFe-7 welding rod have equal strength during the high-temperature tensile test. When the temperatures are between T _E1 and T _E2, the strength of the GBs is lower than that of the grains, and the tensile fractures are intergranular. When the temperatures are below T _E1 or over T _E2, the strength of the GBs is higher than that of the grains, and the tensile fractures are dimples. M ₂₃C₆ precipitates at the GBs, which deteriorates the ductility of the welding rods at temperature between T _E1 and T _E2. M ₂₃C₆ aggravates ductility-dip-cracking (DDC) in the weld metals. The addition of Nb and Ti can form MX (M = Ti, Nb, X = C, N), fix C in grain, decrease the initial precipitation temperature of M ₂₃C₆, and mitigate the precipitation of M ₂₃C₆, which is helpful for minimizing DDC in the weld.     

卷取机恒张力控制方法与应用

本文通过分析卷取机负载的机械特性和变频电机的调速特性,对恒张力卷取的控制方法进行了论述,介绍了冷轧生产线中不同情况下卷取功率的计算方法。结合实例,给出了运用最大力矩控制法,合理选择卷取机的传动电机功率与减速比的公式,该计算结果和计算方法已得到实际验证。     

近期嘉德家具拍品精品赏析

近期北京嘉德家具拍卖精品不少,也拍出不错的价格。这儿介绍三件黄花梨精品家具。第一件,清中期黄花梨高束腰三弯腿带托泥香几(图1),黄花梨家具带有如此精细工艺,十分少见。此香几做工复杂,尺寸又大于常例,恐怕非一般家庭居室所为,     

返本开新（三）——雍正时期家具的基本特征及发展过程

古典家具专家周默先生所编著的《雍正家具十三年》（故宫出版社出版）,开篇总结了雍正家具十三年的基本特征,清晰指出雍正时期是中国家具发展史的重要转折点及过渡时期,即为明式家具的终结点,也是清式家具的肇始期。全文将分期刊出,将对古典家具行业产生积极深远的影响,在为中国古代家具发展史提供详实、鲜活的第一手资料的同时,也因为真知灼见,新作面世,重磅出击,必将不同凡响。     

超临界色谱技术制备功能性产品研究进展

介绍了近年来超临界制备色谱技术在热力学及动力学等方面的研究进展,并重点综述了在功能糖、脂肪酸、氨基酸、维生素等功能性食品,以及手性药物、Z-藁本内酯、青蒿素、茄尼醇等天然药物的分离纯化过程的应用进展,最后对超临界流体制备色谱技术在热敏性高附加值产品的分离提纯技术领域的应用前景进行了展望。     

循环流化床飞灰在混凝土中的应用研究

分析了循环流化床锅炉飞灰与常规煤粉炉粉煤灰在物化特性和活性方面的差别,针对循环流化床锅炉飞灰的特性,将其作为混凝土掺合料进行了实验研究,通过燃烧使其灰含炭量降低,灰的性质得到优化,并比较了改性灰与原状灰作为掺合料时混凝土强度的差别.     

原油发电机排烟喷射装置研制与应用

本文介绍了一种原油发电机排烟喷射装置的研制方法.为减小原油发电机排出的烟气对平台环境的影响,在排烟管尾部安装排烟喷射装置,使烟气喷射距平台较远距离.以烟雾喷射距离和集束度为目标,对喷射装置排烟道进行流道分析,同时根据所需风量进行风机选型,考虑到设备对主机背压的影响以及产生的振动,确定研制方案并进行设计、制造,检验完成后进行陆地试验和海上安装.应用结果表明,安装该喷射装置后,在无风或风速较小的情况下,可使烟雾喷射15.0m以上距离,并且在此范围内,烟雾集束效果较好.该装置可明显改善平台烟气排放问题,为改善平台工作环境提供了一种解决该问题的方案和设备.