Rehoming Strategies for a Relief Toll Machine

When an existing toll machine exhausts and a relief toll machine is added, rehoming of existing trunk groups is necessary. The intent of this paper is to determine rehoming programs whereby the present worth of the total trunk rearrangement cost is minimized while the total number of trunks to be rearranged at any stage of the program is constrained to lie within specified lower and upper limits. The rehoming program will specify the amounts of trunks to be rearranged and their corresponding timings for the rearrangements to take place. It is found that the choice of a proper rehoming strategy is critically dependent on the relative magnitude of the monetary discount rate compared to the traffic growth rate. When the discount rate matches the growth rate, any feasible rehoming strategy for any type of existing and relief machines is appropriate. If the discount rate is lower than the growth rate, it is more economical to rehome the maximum allowable amount of trunks as early as possible. On the other hand, if the discount rate is higher than the growth rate, the rehoming strategy is completely reversed. This case calls for a delay of as much rehoming as possible. However, the number of trunks to be rearranged during each stage of the rehoming program is bounded by the specified minimum allowable limit.     

ELECTRON TRANSFER COLLISION OF NEON IONS WITH Ne IN A RF ION TRAP

The pulsed electron beam rf ion stroage system is used to study neon ions electron transfer,The rate coefficients for electron transfer of the neon ions with the neon gas are measured.the results are better than those in other ion storage system.     

Analysis of wraparound microstrip phased array by infinite arrayapproach

A moment method analysis of an infinite array of wraparound microstrip antennas fed with idealized current probes on a cylindrical body is presented. The integral equation is formulated through the use of periodic grounded dielectric slab Green's function. The method accounts for the blind angles and allows efficient computation of the reflection coefficient at all other angles. Illustrative results are given     

The photosensitivity dermatitis and actinic reticuloid syndrome (chronic actinic dermatitis) occurring in seven young atopic dermatitis patients

This study describes the translocation of the brain specific protein kinase C gamma isoenzyme (PKCgamma) in the hippocampus during food rewarded spatial learning. The holeboard test was used for spatial orientation, and immunoblot analysis was used for assessment of PKCgamma in cytosolic, membrane-inserted and membrane-associated fractions. Membrane-associated PKCgamma was increased during early acquisition of spatial learning, but not in a later phase of training. This transient and apparently temporary intracellular PKCgamma translocation was only observed in the posterior but not in the anterior hippocampus, and was only detected within 10 min after termination of the learning trial. This study supports the idea that PKCgamma is significantly involved in the biochemical events underlying learning and memory, notably during the period of novel information processing. The results further promote the hypothesis that the hippocampus is specifically involved in temporal information processing, which requires the engagement of PKCgamma.     

天然可降解材料的研究进展

塑料制品造成的“白色污染”愈演愈烈,天然可降解材料的开发被认为是解决这一问题的有效方法之一。蛋白质、多糖和脂质作为来源广泛、价格低廉的天然物质,是天然可降解材料制备的理想原料。但是,由于其自身结构和性质的影响,天然可降解材料的力学性能、阻隔性能和耐热性能等往往难以与不可降解塑料媲美。目前,人们主要通过不同原料复配、材料改性以及采用不同加工方式来改善天然可降解材料的性能,使其具备替代不可降解塑料的潜能。本文对近年来常见的蛋白质、多糖和脂质基天然可降解材料的研究进展进行了总结,最后对天然可降解材料目前存在的问题及未来发展趋势进行了展望,以期对天然可降解材料的进一步深入研究和实际应用提供参考和帮助。     

虾夷扇贝活力变化对其呈味特性的影响研究

目的 研究虾夷扇贝活力变化对于呈味特性的影响。方法 将活品虾夷扇贝在4℃干藏0、6、24 h后,其分别处于不同的活力状态。通过扇贝组织形态、扇贝闭壳肌中三磷酸腺苷（Adenosine triphosphate,ATP）及其关联化合物、腺苷酸能荷（Adenylate energy charge,AEC值）、线粒体活性、能量代谢物水平等指标分析活力;对加热熟制后的各样品进行感官评价,测定呈味化合物含量、计算味觉活度值;最后分析扇贝活力变化对呈味特性的影响。结果 干藏期间扇贝外套膜收缩,活力轻微下降,但ATP及其关联化合物、AEC值均无显著变化。线粒体活性由85.59%显著下降至59.21%,线粒体功能下降。另外,干藏导致糖酵解代谢物糖原由4.32 g/100 g下降至3.14 g/100 g,同时葡萄糖1-磷酸、果糖6-磷酸、磷酸二羟丙酮等代谢物含量显著上升,三羧酸循环（Tricarboxylic acid,TCA）代谢物丙氨酸含量由0.44 mg/g增加至0.71 mg/g。干藏导致扇贝中呈味化合物谷氨酸含量由0.93 mg/g下降至0.51 mg/g,精氨酸含量由9.05mg/g上升至10.56 mg/g,滋味中鲜味降低、苦味上升。结论 虾夷扇贝活力下降导致了谷氨酸含量的下降和精氨酸含量的上升,进而造成扇贝滋味中鲜味的下降和苦味的上升。     

菌方普洱熟茶水提物和茶褐素的组成及其降脂作用

研究菌方普洱熟茶水提物和茶褐素的组成及对大鼠肥胖的调节作用。基于居里点热裂解气相色谱-质谱联用技术及高效液相色谱技术,分析菌方普洱熟茶水提物和茶褐素的组成成分。设置正常对照组、高脂模型组、菌方普洱熟茶水提物组和菌方茶褐素组,连续灌胃16周,分析SD大鼠生长指标、血清生化指标、氧化应激及炎症相关指标,并对肝脏组织HE和油红O染色切片进行观察。结果表明：菌方普洱熟茶水提物与茶褐素粗品中茶褐素、蛋白质和多糖占较大比重;没食子酸、表儿茶素和表没食子儿茶素没食子酸酯等儿茶素及衍生物类化合物含量存在明显差异（P<0.05）,菌方普洱熟茶水提物中生物碱类咖啡因和可可碱含量显著高于茶褐素粗品（P<0.05）;在不同居里点热裂解温度下,菌方普洱熟茶水提物与茶褐素的裂解产物分别有7种（380℃）和12种共同成分（600℃）,两者在不同温度下的裂解产物中,酚类种类最多,含量最高的化合物是咖啡因。与高脂模型组相比,菌方普洱熟茶水提物组和茶褐素组体质量、Lee’s指数显著减轻（P<0.05）,血清甘油三酯、血清空腹血糖、肝脏甘油三酯和胆固醇水平显著降低（P<0.05）,脂肪累积减少,血清...     

贝莱斯芽孢杆菌防治甜樱桃采后软腐病的效果和机理

为探索贝莱斯芽孢杆菌（Bacillus velezensis）抑制甜樱桃软腐病的作用机理,实验分析贝莱斯芽孢杆菌KT对匍枝根霉（Rhizopus stolonifer）LC-7的体外和甜樱桃果实体内抑制效果,以及贝莱斯芽孢杆菌KT菌株对甜樱桃果实相关防御酶活力的影响,并通过转录组学解析在与匍枝根霉互作期间,贝莱斯芽孢杆菌KT菌株中与次级代谢物合成和生物防治相关基因的表达情况。结果表明,1×109 CFU/mL贝莱斯芽孢杆菌KT菌悬液对匍枝根霉LC-7菌丝抑制率达87.12%,此时孢子萌发率和胚芽管长度分别为21.54%和11.45 μm。在甜樱桃果实上,1×109 CFU/mL贝莱斯芽孢杆菌KT菌悬液处理48 h后,果实软腐病发病率约为20%,比对照组降低了约80%,并且贝莱斯芽孢杆菌KT菌悬液能抑制甜樱桃果实多酚氧化酶和脂氧合酶活力,诱导过氧化物酶、苯丙氨酸解氨酶、几丁质酶和β-1,3-葡聚糖酶活力增加,提高果实抗氧化和抗病能力。扫描电子显微镜观察发现,经与贝莱斯芽孢杆菌KT菌株共培养后,匍枝根霉LC-7菌丝和孢子形态扭曲,贝莱斯芽孢杆菌KT对匍枝根霉LC-7具有明显的致畸作用。转录组学分析结果表明,贝莱斯芽孢杆菌KT菌株中抗生素合成基因簇bacillaene中的pksIJ和糖醛酸磷壁酸合成基因簇中的tuaAGE基因表达上调,此外发现,表达差异显著的基因主要富集在生物学过程中的核糖核蛋白复合体组装和亚基组成及核糖体组装等一系列与核糖体活动相关的过程。贝莱斯芽孢杆菌可能通过营养和空间竞争以及分泌抑菌活性物质直接抑制匍枝根霉LC-7,还可诱导甜樱桃果实的抗病性。贝莱斯芽孢杆菌对由匍枝根霉引起的甜樱桃软腐病有良好的控制作用,具有开发成生防菌剂的潜力。     

Ferrule-top atomic force microscope

Ferrule-top cantilevers are a new generation of all-optical miniaturized devices for utilization in liquids, harsh environments, and small volumes [G. Gruca et al., Meas. Sci. Technol. 21, 094033 (2010)]. They are obtained by carving the end of a ferruled fiber in the form of a mechanical beam. Light coupled from the opposite side of the fiber allows detection of cantilever deflections. In this paper, we demonstrate that ferrule-top cantilevers can be used to develop ultra compact AFMs for contact mode imaging in air and in liquids with sensitivity comparable to that of commercial AFMs. The probes do not require any alignment procedure and are easy to handle, favoring applications also outside research laboratories.