查询词典 diffuse

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

Jq Ez6_{0An outbreak of highly pathogenic avian influenza caused by H5N1 virus occurred in Vietnam, Japan and Korea, commencing in December, 2003. By February, 2004, it has been distributed widely in Asia and brought heavy losses. H5N1 are ball-like RNA viruses, birds can shed them via respiratory system, ocular secretions and feces, sometimes transferred to human and cause lethal infection. H5N1 patients have prominent features of reactive hemophagocytic syndrome,bronchiolar inflammation, necrosis of bronchial epithelium and organizing,diffuse alveolar damage with interstitial fibrosis.

2003年12月，H5N1型禽流感病毒在越南、日本和韩国爆发，到2004年2月，该病毒已在亚洲广泛蔓延并带来了巨大损失。H5N1是球型RNA病毒，禽类间可通过呼吸系统、眼分泌物和粪便传播，也可传染人类甚至导致死亡。H5N1感染者的特征是反应性噬血细胞综合征、细支气管炎症、支气管上皮坏死和机化、弥漫性肺泡病变和间质纤维化。

Stimulation of these afferents elicits diffuse and pronounced pulmonary reflex responses such as cough, bronchoconstriction, and mucus secretion.

刺激此类感觉神经会引发多种的呼吸反射，例如：咳嗽、气道收缩及黏液分泌等。

Atherosclerotic/calcific aortic stenosis, on the other hand, develops at later in life and is a manifestation of diffuse atherosclerosis that commonly affects elderly individuals.

另一方面，动脉粥样硬化/钙化性主动脉瓣狭窄出现的时期更晚，表现为广泛的动脉粥样硬化，常好发于老年人。

ABSTRACT: BACKGROUND: Liver transplantation in presence of diffuse portal vein thrombosis is possible by using caval blood as portal inflow, through cavo-portal transposition.

背景：目前在应用肝移植治疗弥漫性门静脉血栓通常是通过下腔静脉-门静脉转流将下腔静脉血分流至门静脉。

Chest radiography and chest computed tomography showed diffuse multiple cavitary nodules of the bilateral lung fields.

病患的胸部X光片和胸部电脑断层均显示两侧肺部散佈著瀰漫性、多发性的开洞式结节。

The distribution was different in various multiple cavitary lung diseases.Local multiple onset was particularly prevalent in cavitary pulmonary tuberculosis,scattered multiple onset was particularly prevalent in various infected cavitary lung diseases,diffuse multiple onset was particularly seen in cavitary pulmonary metastases.

多发性肺空洞病变的肺内分布形式不同，局部多发多见于结核性肺空洞病变，散在多发多见于感染性肺空洞病变，弥漫多发多见于肺转移瘤空洞。

Stems single or several and cespitose, erect to diffuse, hispid or pilose, rarely glabrous.

茎单一或数个和丛生，直立扩散，或具柔毛，很少无毛。

The eye was irrigated with saline immediately, but the initial slit-lamp examination showed diffuse punctate epithelial keratopathy, prominent conjunctival injection and chemosis.

病人在急诊室立即接受大量生理食盐水冲洗，随后之眼部细隙灯检查发现左眼有明显之点状角膜上皮缺损及结膜充血水肿。

Staining extent and intensity were evaluated semiquantitatively and mean values for each parameter were calculated. Immunostaining with D2-40 showed positivity in 100% of skeletal myxoid chondrosarcomas, 96% of enchondromas, 95% of low-grade chondrosarcomas, 80% of chordoid meningiomas, and 75% of chordoid gliomas. Staining with S100 demonstrated diffuse, strong positivity in all (100%) chordoid gliomas, skeletal myxoid chondrosarcomas, low-grade chondrosarcomas, and enchondromas, 94% of chordomas, and 81% of extraskeletal myxoid chondrosarcomas, with focal, moderate staining in 40% of chordoid meningiomas.

我们半定量地评估了这些免疫染色的广度和强度，并且计算了它们各自的平均值。D2-40阳性表达于100%例骨的黏液样软骨肉瘤、96%例内生性软骨瘤、95%例低级别软骨肉瘤、80%例脊索样脑膜瘤和75%例脊索样胶质瘤。S100染色弥漫且强烈地表达于所有的（100%）脊索样胶质瘤、骨的黏液样软骨肉瘤、低级别软骨肉瘤和内生性软骨瘤，94%例脊索瘤，81%例骨外黏液样软骨肉瘤，还有，局灶性、中度表达于40%例黏液样脑膜瘤。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。