受控生态生保系统中叶用蔬菜植物品种的筛选

目的为受控生态生保系统筛选合适的叶用蔬菜植物种类及品种。方法在环境参数一致的条件下,对4种散叶生菜品种,1种油麦菜,2种菠菜品种,1种曲麻菜和1种油菜进行栽培,以可食生物产量、营养品质、光合效率和蒸腾效率4个生理特性作为评价指标,对候选植物品种进行筛选。同时在不同CO2浓度(500、1000、1500和2000μmol/mol)和光照强度条件[100、300、500和700μmol/(m2·s)]下对各品种的光合效率和蒸腾效率进行了测量。结果筛选出了“嫩绿奶油”生菜、“大速生”生菜、曲麻菜和四季油麦菜4个植物品种,以及与之相关的适宜CO2浓度为2000μmol/mol,光照强度为700μmol/(m2·s)。结论筛选出的4种植物品种在受控生态生保系统适宜条件下具有较高的可食生物产量、营养品质、光合效率和蒸腾效率等特性,可以作为受控生态生保系统中的生物部件。     

浅谈固有荧光在妇科临床的应用

目的 探讨固有荧光早期肿瘤诊断技术在妇科临床上的应用。方法 将固有荧光诊断仪的光导纤维探头对准宫颈部位，将阴道镜镜头对准宫颈，观察显示器上荧光图象加一判定。结果 共查1456例，阳性2例，占0．14％，生殖道感染等896人占61．5％。结论 固有荧光肿瘤早期诊断技术可作为妇科临床常规检查手段，特别适于生殖健康普查。     

Physico-chemical characterization of legumin-T from faba bean (Vicia faba L.)

Legumin-T, the high-molecular mass product of limited tryptic hydrolysis of faba bean legumin, was investigated using hydrodynamic methods, static light scattering, fluorescence and ultraviolet spectroscopy. The following physico-chemical parameters were determined in a high-ionic strength buffer system: molecular mass, 2.4 × 10⁵ g/mol; sedimentation coefficient, s³₁₀= 10.8 × 10^?13s_i; diffusion coefficient, D⁰₂₀= 4.1 × 10^?7 cm² s^?1; intrinsic viscosity, [n] = 3.51 mL/g; partial specific volume, v∣?= O.719 mL/g; frictional ratio, f/f_o= 1.22; shape factor, β= 2.17 × 10⁶. Conformational changes during the formation of legumin-T can be deduced from the fluorescence emission and UV spectra. © Munksgaard 1996     

Pruritic Papular Eruptions and Candidiasis Due to HIV Infection

We present two patients with refractory papular eruptions and severe candidiasis. Both of them are positive for treponema pallidum and have suffered from pruritic papular eruptions (PPE) that had resisted therapy for years. Also, candidiasis appeared in the mouth, at intertriginous sites, and on the feet The clinical features suggested immunodeficiency, and HIV tests were positive. Histologically, the specimen from the PPE lesion showed perivascular and perifollicular mixed cell infiltration. The fungus was identified by both Parker-KOH-mount examination and mycologic culture as Candida albicans. The pruritic papules were healed almost completely with oral antihistamine and topical corticosteroid treatment, and the candidiasis mostly disappeared after treatment with topical antifungal agents alone. We learned from these two cases that refractory PPE and severe candidiasis indicate a need for HIV testing.     

Factors influencing the photo-reproduction of hydroa vacciniforme lesions

Hydroa vacciniforme vesicles can be reproduced experimentaly with repetitive UVA irradiations, but this photo-reproduction is not constant. The aim of this study was to search for the factors that influence photo-reproduction. To reproduce hydroa vacciniforme lesions six patients underwent repetitive UVA and polychromatic irradiations on the back. In four patients out of six, UVA irradiation with high doses induced papulo-vesicular lesions. Photo-induced lesions were very close to those induced by sunlight. Photo-reproduction failed when phototesting was done after or shortly before remission. Therefore, the absence of photo-reproduction appears to be a good prognostic factor.     

用光镜直接从培养细胞中检测细胞凋亡的研究

目的：观察细胞培养中凋亡细胞的形态。方法：取４℃环境下不同时间培养的小鼠胸腺细胞，与台盼蓝混合制成悬液片，用光镜观察。结果：可见凋亡细胞核形态改变及凋亡小体。结论：光镜下依据典型凋亡细胞形态变化可确认凋亡。     

Sudden cardiac death while taking amiodarone therapy: the role of abnormal repolarization

Torsade depointes may occur as a complication of amiodaronetherapy. We report a patient receiving amiodarone who was resuscitatedfrom cardiovascular collapse and documented ventricular fibrillation.At subsequent electrophysiology study, while the patient wastaking amiodarone therapy, monophasic action potentials withearly after depolarisations were recorded which were not presentwhen the patient was restudied 6 weeks after discontinuationof amiodarone. Early after-depolarisations may be importantin the genesis of polymorphic ventricular tachycardia complicatingamiodarone therapy.     

Reproducible Induction of "Atypical" Torsades de Pointes by Programmed Electrical Stimulation:

Sotalol-Induced Polymorphic VT. We present a patient with sotalol-induced polymorphic ventricular tachycardia that was seen only with programmed ventricular stimulation. Electrophysiologic studies performed prior to initiation of sotalol therapy revealed inducible monomorphic ventricular tachycardia. Possible underlying electrophysiologic mechanisms are discussed.     

Asbestos dust exposure during brake repair

About 10,000 tons of chrysotile per year are used in the Federal Republic of Germany for the production of friction materials. During brake repair an unknown number of approximately 300,000 mechanics in automobile service stations are exposed to asbestos dust. In a field study, asbestos fiber concentrations during brake repair were measured. Occupational histories and chest X-rays of brake service mechanics are being examined. Ninety dust measurements in 76 service stations were made by phase contrast microscopy and by scanning transmission electron microscopy. By electron microscopy, extremely fine chrysotile fibers with lengths less than 5 microns were identified in brake drum dust. Fibers with lengths greater than or equal to 5 microns constituted less than 1% of all chrysotile fibers counted in brake drum dust. Short-term asbestos dust exposures were measured by light microscopy in 101 personal samples during blowing out of brakes, and grinding and turning of brake linings. During blowing out of car brakes, as well as during grinding of brake linings, the product of fiber concentration with length greater than 5 microns and sampling time amounted to about 4-5 fibers/ml X min corresponding to a concentration of 10(6) fibers/m3 over 4-5 min. For trucks and buses higher amounts of 5-10 X 10(6) fibers/m3 X min were observed during these operations. From occupational histories of 210 vehicle mechanics, an average duration of employment of mean +/- s = 21 +/- 10 years and a mean cumulative fiber dose of mean +/- s = (0.54 +/- 1.1) X 10(6) fibers/m3 X years were calculated.