55t/h锅炉技术改造成功经验

介绍了35t／h锅炉扩容改造为55t／h非标锅炉的技术成功经验。从增加锅炉的容积、受热面面积、燃烧器喷嘴改造三个方面介绍了对锅炉本体的改造，改造后实现了锅炉的水位、汽温及燃烧自动调节，提高了锅炉的热效率为以后的锅炉扩容改造提供了实践经验。     

Ileal pouches: adaptation and inflammation

Ileal pouch-anal anastomosis (IPAA) has become the operation of choice following proctocolectomy for ulcerative colitis (UC) and familial adenomatous polyposis. Functioning ileal pouch mucosa undergoes histological changes resembling the colon (colonic metaplasia). The possible role of stasis and luminal factors--bile acids, short-chain fatty acids and bacteria--are discussed. It seems likely that colonic metaplasia is an adaptive response to the new luminal environment in IPAA. Inflammation in the ileal reservoir ('pouchitis') is the most significant late complication in IPAA. It occurs in 20-30% of patients and is virtually confined to those with prior UC. The clinical picture in pouchitis is highly variable; however, it can be easily categorized into three groups. Nevertheless, in most cases it is likely to represent recurrent UC in the ileal pouch. Current treatments and possible preventative strategies for pouchitis have been outlined.     

Third and fourth cervical pouches remnants and branchial clefts

We present our experience with nine patients who were operated on for having cervical cysts lesions with the purpose of providing more information about this type of pathology. Five patients presented a left low-jaw cervical mass, diagnosed in the neonatal period. All of them presented with respiratory distress and in four of them quick local inflammatory manifestations appeared. A plain radiograph demonstrated liquid and air in the lesion and we proceeded to the operation. We made four drainages with marsupialization and in another patient complete excision of the lesion was made. Two marsupializations closed spontaneously and the other two had to be reoperated for excision of a pharyngo-cutaneous fistula. In the wall of the cyst there were thyroid-follicles, considering them remnants from the fourth branchial pouch. Three patients were diagnosed at one, two and five years of age respectively with a cervical mass and were operated on with complete excision. Due to its anatomic situation and lack of relation with other structures, we thought as probably deriving from the cervical sinus. In one patient who presented a mass in the inner side of the sternocleidomastoid muscle, complete excision of the lesion was made which had a tract joining the piriform sinus area, and thymic and thyroid tissue, being diagnosed as a cervical thymic cyst. All the patients cured with the complete excision. The anatomic situation ot these lesions and their connexions with next structures provide the best data to know their probable embrionary origin.     

Sac-like pouches in Blastocystis from the house lizard Cosymbotus platyurus

We report a 65-year-old male with progressive supranuclear palsy (PSP) who developed bilateral vocal cord abductor paralysis (VCAP). The patient was admitted to our hospital because of impaired gait. He was well until two years earlier, when he began to walk unsteadily. During the next two years, dysarthria and dysphagia developed and his gait worsened gradually. On admission, neurological examination showed impaired vertical and incomplete lateral gaze. His speech was slow and monotonous. Contractures were found in the neck muscles and elbows. The deep tendon reflexes were increased in the upper and decreased in the lower extremities. Babinski sign was negative. Snout and forced grasping reflexes were elicited. He showed marked bradykinesia. Magnetic resonance imaging revealed a midbrain tectum atrophy. Single photon emission tomography showed severe hypoper-fusion in the frontal cortex. No improvement was provided by the administration of levodopa-carbidopa, bromocriptine, droxydopa and amitriptyline. One month after admission, inspiratory stridor developed at night. The laryngofiberscopic examination demonstrated VCAP. An emergency tracheostomy relieved his respiratory distress. Although VCAP rarely occurs in neurodegenerative disorders other than multiple system atrophy, attention to VCAP should be required in PSP patients.     

Experience with collaboration

Experience with collaboration     

Postprocess contamination of flexible pouches challenged by in situ immersion biotest

Packages were evaluated for leaks by determining microbial penetration through microchannels as a function of test organism concentration, location in a retort, and microchannel diameter and length. A flexible pouch was used in an in situ immersion biotest coupled with a state-of-the-art retort. Microchannel diameters of 10 to 661 microm with 3- and 6-mm lengths were created by placing tungsten wires in vacuum heat-sealed flexible pouches. After removing the wires, these pouches were subsequently heat processed under pressure. They were then biotested in cooling water containing 10(3) and 10(6) CFU of motile Enterobacter aerogenes per ml for 30 min and were dried immediately after manual unloading. After incubation at 37 degrees C for 3 days, they were visually examined for contamination. The high-temperature retorting process was shown to decrease microchannel diameters by an average of 20%. Generally, the smaller the microchannel diameter, the greater the percent shrinkage. Statistical analysis of the biotesting data showed that microchannel diameter and length had strong effects on microbial penetration (P < 0.01). Microbial concentration had a borderline significant effect (P < 0.05), but the effect of package location in the retort was not significant. At conservative conditions, such as a 3-mm microchannel length and a cooling water contamination level of 10(6) CFU/ml, the selected microorganism can penetrate microchannels with diameters as small as 7 microm. However, the minimum microchannel diameter for penetration could be as large as 46 microm at practical conditions of 6-mm microchannel length and contamination levels of 10(3) CFU/ml.     

Experience with under-water birth]

Underwater birth is now deemed an acceptable type of delivery. Safety is a recurring consideration, the main concern being that of drowning. But in reports of 19,000 underwater births no untoward events were noted. Also, need for pain relief and of intervention during labor were both reduced. The short term indicators of neonatal outcome were good. A recent review explains 5 different physiological factors which inhibit initiation of fetal breathing under warm water. Many studies have shown no increase in risk of infection of either mother or baby. We report our experience with 26 women, 23 of whom actually delivered in the pool with excellent results. We believe that birth under water is safe and beneficial if done properly for low-risk patients.     

Experience with the electrohydraulic disintegrator

Experience with the electrohydraulic lithotrite in treating 14 cases of bladder calculi is reported. This revolutionary lithotrite is applicable to most bladder stones and is associated with few complications.     

轧辊电花火打毛的实践

前　言早在十几年前 ,用户就对毛化带钢质量不断提出更高的要求 ,特别是用于汽车工业裸露的汽车面板上。欧洲许多冷轧厂都对这一要求做出了积极反响 ,包括改造、更新现有的喷砂设备和引用新的毛化工艺取代传统的毛化冷轧工作辊的方法。在较新的技术当中 ,形式多样的电火花打毛(ＥＤＴ)工艺因其可提供优质产品而占据了稳固地位。西班牙最大的冷轧厂之一的ＳＩＤＭＥＤ公司 ,也经历了与欧洲其它轧钢厂同样的困境 ,因为他们的喷砂设备效率也很低且难于控制。在 2 0世纪 90年代早期 ,ＳＩＤＭＥＤ便决定在平整机上采用ＥＤＴ技术 ,以便提高带…     

Experience with 500 simultaneous pancreas-kidney transplants

METHODS: From December 1985 to October 1997, 500 simultaneous pancreas-kidney transplants (SPKs) were performed at the University of Wisconsin. Bladder drainage (BD) was used in 388 and enteric drainage (ED) in 112. All pancreas transplants were preserved in UW solution. RESULTS: Patient survival at 1, 5, and 10 years was 96.4%, 88.6%, and 76.3%; kidney function, 88.6%, 80.3%, and 66.6%; and pancreas function, 87.5%, 78.1%, and 67.2%. Thrombosis of the pancreas occurred in three to four (0.6% to 0.8%) and primary nonfunction in one (0.2%). There was a 4.2% acute tubular necrosis rate for the kidney. Conversion from BD to ED was required in 24% of cases. Primary indications for enteric conversion (EC) were leak (14%), urethritis and extravasation (7%), and chronic hematuria (3%). No graft was lost as a result of EC. There was no difference in 1-year graft survival between ED and BD. Leading causes of pancreas loss were rejection in 45 patients and death with a functioning graft in 27 patients. Since June 1995, mycophenolate mofetil was used for immunosuppression (n = 109). One-year survival rates with mycophenolate mofetil are patient, 98.1 %; kidney, 94.2%; and pancreas, 93.1%. Steroid-resistant rejections decreased from 48% to 15%. CONCLUSIONS: This series represents the world's largest experience with SPK, including the longest follow-up for BD pancreatic transplants. Ten-year graft survival rates exceed those of all other transplants, with the exception of HLA-identical living-related grafts. This series confirms that SPK is a highly successful procedure for selected diabetic patients with renal failure.