Pancreatic somatostatinoma represents a rare group of neuroendocrine tumors,which was first reported by Ganda and Larsson in 1977.Less than 50 cases have been r
应用GC-MS分析方法对全国75处自来水厂原水及出厂水中苯、甲苯、乙苯、二甲苯、苯乙烯等7种苯系物进行了分析。结果表明:除1处原水水样含有苯(浓度为0.000 6 mg/L)外,其余原水和出厂水中苯系物浓度均低于GC-MS检测限。对含有苯的原水水样进行健康风险评价,计算得到其化学致癌物风险值为1.03×10-6,大于美国环保局提出的最大可接受值(10-6)。对机器检测限对应的苯系物浓度进行健康风险
AIM: To examine the risk of colorectal neoplasm in acromegalic patients by meta-analyzing all relevant controlled studies.METHODS: Extensive English language me
二沉池是活性污泥系统中的重要处理单元,其运行好坏会直接影响污水处理厂的出水水质,为此采用数值模拟方法进行了二沉池的结构优化研究。借助Fluent软件,结合实际沉淀柱试验结果,首先对拟采用的模型进行了验证,其模拟精度高达97%。运用该模型,以北京市某污水处理厂的辐流式二沉池为研究对象,研究了二沉池中导流筒高度和水平位置对内部速度场和浓度场的影响,结果显示,这两个参数都会影响水流在二沉池中的停留时间,
Background The relationship between cyclosporine-induced chronic nephrotoxicity (CAN) and renin-angiotenein Ⅱ in humans is still contradictory. This study was
Fibro-muscular dysplasia (FMD) is a rare but well documented disease with multiple arterial aneurysms. The patients, usually women, present with various clinica
通过加碱将超声预处理污泥的初始pH值调整为7～12,在室温条件下考察破解污泥的水解酸化效果。结果表明:超声破解污泥的SCOD浓度与pH值呈正相关,且当污泥酸化的最佳初始pH值为11时,挥发酸的浓度达到1 751 mg/L。利用PCR-DGGE对不同初始pH值下水解酸化过程中的微生物进行分析,发现β-Proteobacteria、γ-Proteobacteria、Bacteroidetes是参与反应
5-aminosalicylic acid (mesalamine) rarely induces hyper-sensitivity reactions. If chest pain associated with atypical electrocardiographic changes are seen duri
AIM: To explore whether cyclooxygenase 2 (COX-2) -765G＞C polymorphism is associated with susceptibility of colorectal cancer (CRC) and to evaluate the risk of co
Hepatocellular carcinoma(HCC)is the sixth most common cancer in the world.The majority of patients with HCC present with unresectable disease.These patients hav