自拟消咳贴穴位贴敷治疗小儿反复呼吸道感染的临床研究

[目的 ]探讨自拟消咳贴穴位贴敷治疗小儿反复呼吸道感染 (RRI)的临床效果。 [方法 ]选择 15 0例RRI患儿 ,随机分为观察组和对照组 ,观察组在对因对症治疗基础上应用自拟消咳贴穴位贴敷 ,对照组采用对因对症治疗 ;另选 3 0例正常儿童 ,观察血浆内皮素 (ET -1)、一氧化氮 (NO)变化及临床疗效。 [结果 ]观察组治疗后血浆ET -1、NO含量明显下降 (P <0 .0 1) ,而对照组治疗前后则无统计学意义 ;观察组临床总有效率高于对照组 (P <0 .0 1) ,且每月发病次数及天数也明显降低。 [结论 ]应用自拟消咳贴穴位贴敷能有效地降低RRI患儿血浆ET -1、NO水平 ,从而提高临床疗效     

Prognostic significance of cytochemical analysis of leukemic M2 blasts

Cytochemical analysis of leukemic blasts from 46 patients with acute myeloblastic M2 leukemia (according to the FAB classification) was performed before and after cytostatic therapy, and compared with findings obtained in 20 age- and sex-matched control subjects. Cytochemical findings for myeloperoxidase (MPO), Sudan black B, acid phosphatase and alpha-naphthyl-acetate esterase (ANAE) were related to the achievement of the first complete remission (CR),i.e. data were compared after the patients had been divided into CR and non-CR groups. The analysis clearly showed that a high proportion of myeloperoxidase- and, to a lesser extent, Sudan black B-positive blasts before treatment may have constituted a significantly unfavourable prognostic factor.     

Prevalence of elevated serum prostate-specific antigen in rural Nigeria

BACKGROUND: Recent hospital and cancer registry data show increasing prostate cancer incidence in Nigeria, which was previously regarded as a low incidence region. This study investigates the prevalence of prostate cancer risk in a previously unscreened cohort of rural Nigerians. METHODS: Rural Nigerian men, 40 years and older, were screened by serum prostate-specific antigen (PSA) and digital rectal examination (DRE) and those with PSA >/= 4 ng/mL and/or abnormal DRE were referred for prostate biopsy. RESULTS: Of 200 consecutive men invited, 151 (75.5%) presented for screening, the mean age was 56.45 + 15.1 and 95 (61.6%) were >/= 50 years of age. Of the 140 who consented to a blood test, PSA correlated with age (r = 0.3, P < 0.01), 14 (10.0%) had abnormal PSA >/= 4 ng/mL, increasing from 3 (3.6%) in men < 60 years to 4 (50%) in men >/= 80 years. The rate was 13 (15.7%) for men >/= 50 years and there was no evidence of increased incidence of prostatitis in the community. Mean (median) PSA in ng/mL increased from 1.17 (0.60) in the youngest to 13.75 (4.45) in the oldest cohort. Of those who accepted DRE, 38 (29.0%) had an enlarged prostate, including two who had nodular prostate, one-third with symptoms, increasing from 4 (5.4%) in those < 50 years to 6 (75.0%) in men >/= 80 years. The proportion of men with PSA >/= 4 ng/mL among those with enlarged vs normal prostate is 27.0 to 3.4%, P < 0.001, and the pattern was similar for men >/= 60 years and those < 60 years of age. The 40 (32.0%) men referred for prostate biopsy defaulted mainly because they did not fully understand the need for further investigation because they were symptom free or afraid of the possible side-effects of the procedure or diagnosis of cancer. CONCLUSION: The proportion of men with PSA >/= 4 ng/mL is comparable to that of previously unscreened populations with high incidence of prostate cancer such as African-American men. A larger study is required to confirm these findings and intensify efforts to determine the prostate cancer detection rate by biopsy in this population. A prostate cancer awareness and education campaign will be useful in this community.     

LDPE／CPE／炭黑三相复合导电体系的电学性能

研究了ＬＤＰＥ／ＣＰＥ／炭黑三相复合导电体系的导性能和电流－电压特性。实验结果表明复合体系具有明显的导电渗滤效应，在共混比ＬＤＰＥ／ＣＰＥ＞５０／５０时，导电性能随ＣＰＥ含量增加而显著提高，这主要是由于炭黑粒子在ＬＤＰＥ和ＣＰＥ两组分分中的分布不均匀性所致。     

Patterns of asbestosis in New Jersey.

Hospital discharge data from New Jersey were used to identify cases of asbestosis for the 8 years 1979-1986. Multiple admissions were deleted so that each individual was counted once at the time of his/her first hospitalization with an asbestosis diagnosis. White males had the highest age-adjusted average annual discharge rate of 19.3 cases/100,000 population, followed by black males (12.3 cases/100,000) and white females (1.2 cases/100,000). The discharge rate was positively associated with age in each race/sex category. The relationship between rates for black males and white males depended on age: under 65 years, the rates were almost equal, and at 65 years and older, the white rates were nearly twice the black rates. There were two areas of the state where the rates were highest: the north-central and southwest regions. These two areas represent manufacturing and shipbuilding applications of asbestos, respectively. During the years 1979-1986, the annual percentage increase in asbestosis rates was 20% for white males, 17% for black males, and 8% for white females. Continued surveillance will reveal when the rates for asbestosis stop increasing.     

桡骨远端骨折不同治疗方法临床疗效比较

[目的]探讨不同分型桡骨远端骨折的有效治疗方法.[方法]分析236例桡骨远端骨折的治疗,根据AO分型为A、B、C 3型,分别采用闭合手法复位中医小夹板外固定及石膏外固定、切开复位＂T＂形钢板内固定3种固定方法,分别进行骨折的复位评分、功能评分,并比较不同固定方法之间复位评分及功能评分优良率.[结果]236例病人术后均获随访,随访时间6～20个月,平均14.6个月.3组当中A、B型骨折复位评分优良率无显著性差别,功能评分小夹板外固定组及＂T＂形钢板内固定组优良率明显优于石膏外固定组,功能评分小夹板外固定组和＂T＂形钢板内固定组比较优良率无显著性差别;C组当中无论是复位评分还是功能评分,＂T＂形钢板内固定组优良率明显优于其它2组.[结论]对于C型骨折,建议行骨折切开复位内固定;对于A、B型骨折,闭合手法复位小夹板外固定能取得较好的临床疗效.     

Fluid Flow through Filtering Appendages of Insects

Many organisms use structures composed of arrays of cylindersto capture particulate food or molecules form the water or airaround them. The performance of such filters depends on thevelocity of fluid movement through them; hence, mathematicalmodels of flow through fibrous structures can provide insightsabout the functional morphology of biological filters. In thispaper, the authors address the case of feather-like biologicalfilters of finite width and assess several possible models forfluid motion through them by comparing model predictions withobservational data. Two examples of insect appendages are considered:the cephalic fans of black fly aquatic larvae that capture particulatefood and the antennae of adult male moths that catch sex-attractantmolecules released by female moths. The results suggest thatflow through such structures can be much slower than ambientcurrents, that the finest hairs in the structure are the morphologicalfeatures with the greatest effect on leakiness, and that thevelocity of movement (or of ambient flow), as well as the morphologyof such filters, can be critical in determining their performance.     

云南习用藁本的品种考证

目的：对云南地区习用的藁本品种进行考证。方法：文献调研,实地考察。对文献中记地匠“藁本”进行比较分析,在云南几个主产区、集散地进行实地考察,结合生药鉴定做出评价。结果：通过研究,发现云南地区用的藁本是黄蒿本和黑藁本两个品种,黄藁本的基源是伞形科滇芹属植物滇芹Sinodielsia yunnanensis Wolff和藁本属植物丽江藁本Ligusticum delavayi Franch.,黑藁本的其源是伞形科藁本属植物蕨叶藁本L.pteridophyllum Franch,。结论为现代研究及临床用药提供依据。     

Laparoscopic resection for a left adrenal black adenoma

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