用FAB—MS／MS对γB—晶体蛋白非酶糖基化位点的研究

鉴定γＢ－晶体蛋白非酶糖基化位点。方法用离子交换ＨＰＬＣ纯化小牛晶状体γＢ－晶体蛋白，与果糖保温后用糜蛋白酶水解。糖基化的肽用Ａｆｆｉ－Ｇｅｌ６０１柱层析纯化，并用ＲＰ－ＨＰＬＣ分离各肽。     

正交试验法优选冬凌草的提取工艺

目的：研究冷浸提取法中冬凌草的最佳提取条件。方法：采用正交试验法，以溶剂用量，提取时间和提取次数３个因素，每个因素选取３个水平进行实验。结果：因素Ａ和因素Ｂ对冬凌草甲素的含量均有显著的影响，因素Ｃ则有一定的影响。结论：最佳工艺Ａ３Ｂ３Ｃ２，即倍量９５％，ＥｔＯＨ提取２次，每次６ｄ。     

A computerized method for rapid quantification of gallbladder volume from real-time sonograms

A computerized method that requires only 1-2 minutes to quantify gallbladder volume from real-time sonograms is described. This time is considerably shorter than that required using the hand-calculation method. There was a highly significant correlation between gallbladder volumes calculated by computer and hand (r = 0.97; P less than .001).     

盐酸雷尼替丁缓释片的研制及释药性质

目的：制备盐酸雷尼替丁缓释片，并评价其释药特性。方法：以不同种高分子材料作为阻滞剂，设计９个处方制备缓释片，并测定其体外释放度。结果：处方Ｒ５１ｈ释药达３２％，１２ｈ释药达８０％以上，具有较好的释药性能。结论：该制剂体外释药行为符合Ｈｉｇｕｃｈｉ方程，符合水凝胶骨架释放机理，处方Ｒ５能制备较好释药性能的缓释片。     

Rotator cuff tears: preliminary application of high-resolution MR imaging with counter rotating current loop-gap resonators

A new class of radio frequency (RF) coils for magnetic resonance (MR) imaging and spectroscopy is introduced. The coils consist of two loop-gap resonators of equal diameters positioned along a common axis. They are tuned to the mode in which the current in the two loops flows in opposite directions. These coils are "decoupled" from a uniform excitation field of arbitrary orientation (including circularly polarized fields) by intrinsic decoupling and by means of back-to-back fast recovery diodes. Measurements made with the coils and a phantom saline tank indicate that the signal-to-noise ratio obtainable with these coils is almost identical to that obtained with single loops. Imaging of several anatomic areas, including knee, wrist, and shoulder, has been performed with a 1.5-T MR system that uses circularly polarized RF. A small series of patients with torn rotator cuffs underwent imaging. Difficulties in establishing the diagnosis with MR imaging because of anatomic complexity are illustrated. The value of pulse sequences with long repetition times to increase the signal intensity of fluid in the joint is shown.