Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the stru...Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the structural fragments are isolated and purified from live probiotic cells. While observed to be strain-dependent as in the case of live probiotics, orally administered PCFs demonstrated a broad spectrum of immune modulation functions;anti-allergy;anti-inflammation;anti-bacterial and anti-viral properties;anti-mutagenic;and radioprotective and detoxification abilities in humans and animals. The PCFs mechanisms of action include events of motifs of cell wall peptidoglycans, DNA motifs, nucleotide containing components, lipoteichoic acids (LPAs), surface layer (S-layer) proteins, and cytoplasmic proteins. Different immunological in vivo-in vitro tests have shown that PCFs, essentially, have the ability to stimulate the macrophages, and induce cytokines such as interleukins, tumor necrosis factors (TNFs), interferons (IFNs), and natural killer (NK) cells. PCFs may be used as ingredients for foods and beverages or as nutritional supplements with long term stability and shelf-life up to 5 years. PCFs may also be used as health restorative ingredients in cosmetic products. The outcome of probiotics CFT? stands as an advantage to the food and pharmaceutical industries, regarding the formulation of novel products with unadulterated sensory characteristics of origin. Hence, PCFs are being characterized here as “novel nutraceutical ingredients” for health maintenance in both humans and animals.展开更多
针对2.0~25.0μm波段传输的限制损耗问题,文章采用数值模拟方法研究影响碲基硫系光子晶体光纤(photonic crystal fiber,PCF)限制损耗的主要因素。光纤纤芯和包层材料采用Ge 20 As 20 Se 15 Te 45玻璃,通过改变纤芯直径、空气孔直径和空...针对2.0~25.0μm波段传输的限制损耗问题,文章采用数值模拟方法研究影响碲基硫系光子晶体光纤(photonic crystal fiber,PCF)限制损耗的主要因素。光纤纤芯和包层材料采用Ge 20 As 20 Se 15 Te 45玻璃,通过改变纤芯直径、空气孔直径和空气孔层数等参数进行2.0~25.0μm波段限制损耗的计算,结果表明,影响限制损耗的最大因素是纤芯直径,限制损耗随着纤芯直径和空气孔直径的增大而显著降低,随着空气孔层数的增加而降低;优化设计出一种低限制损耗的PCF,结果表明,当纤芯直径和节距为8.0μm、空气孔直径为7.2μm、包层空气孔层数为4时,该PCF在2.0~25.0μm波长范围的限制损耗低于1.4×10^(-6) dB/m,满足低损耗传输要求。文章研究结果对2.0~25.0μm波段光信号的传输具有一定的意义。展开更多
文摘Probiotical cell fragments (PCFs) are structural components of the probiotic cell lysate(s) and exhibit similar beneficial effects on the host as live probiotic bacteria. With cell fragment technology (CFT?), the structural fragments are isolated and purified from live probiotic cells. While observed to be strain-dependent as in the case of live probiotics, orally administered PCFs demonstrated a broad spectrum of immune modulation functions;anti-allergy;anti-inflammation;anti-bacterial and anti-viral properties;anti-mutagenic;and radioprotective and detoxification abilities in humans and animals. The PCFs mechanisms of action include events of motifs of cell wall peptidoglycans, DNA motifs, nucleotide containing components, lipoteichoic acids (LPAs), surface layer (S-layer) proteins, and cytoplasmic proteins. Different immunological in vivo-in vitro tests have shown that PCFs, essentially, have the ability to stimulate the macrophages, and induce cytokines such as interleukins, tumor necrosis factors (TNFs), interferons (IFNs), and natural killer (NK) cells. PCFs may be used as ingredients for foods and beverages or as nutritional supplements with long term stability and shelf-life up to 5 years. PCFs may also be used as health restorative ingredients in cosmetic products. The outcome of probiotics CFT? stands as an advantage to the food and pharmaceutical industries, regarding the formulation of novel products with unadulterated sensory characteristics of origin. Hence, PCFs are being characterized here as “novel nutraceutical ingredients” for health maintenance in both humans and animals.
文摘针对2.0~25.0μm波段传输的限制损耗问题,文章采用数值模拟方法研究影响碲基硫系光子晶体光纤(photonic crystal fiber,PCF)限制损耗的主要因素。光纤纤芯和包层材料采用Ge 20 As 20 Se 15 Te 45玻璃,通过改变纤芯直径、空气孔直径和空气孔层数等参数进行2.0~25.0μm波段限制损耗的计算,结果表明,影响限制损耗的最大因素是纤芯直径,限制损耗随着纤芯直径和空气孔直径的增大而显著降低,随着空气孔层数的增加而降低;优化设计出一种低限制损耗的PCF,结果表明,当纤芯直径和节距为8.0μm、空气孔直径为7.2μm、包层空气孔层数为4时,该PCF在2.0~25.0μm波长范围的限制损耗低于1.4×10^(-6) dB/m,满足低损耗传输要求。文章研究结果对2.0~25.0μm波段光信号的传输具有一定的意义。
