终结者骨架

在今年夏天,HT公司公布将产品线延伸到1/4比例,不知这个消息对于玩家们来说是喜讯还是坏消息,相信每一个玩家都会有不同于别人的答案。这次HT公司将分别推出1/4比例超合金电镀终结者骨架和1/4比例《黑暗骑士——崛起蝙蝠侠》,HT公司在1/6比例领域已经有着非常丰富的制作经验。随着产品比例的加大,这将会给HT公司带来更大更精细的制作空间,相信通过1/4比例人偶产品,HT公司又会将自己产品的像真度达到一个新的高度。     

利用老建筑安装300t/d制粉生产线的实践

我公司系国营郑州面粉厂和香港布姆有限公司合资组建.郑州面粉厂在1991年引进了布勒公司200t/d制粉生产线,为扩大生产规模,1996年底又引进了布勒公司300t/d制粉生产线和500t/d配粉系统工艺设备各一套.     

比利时国亚麻纤维的品质与应用

我公司于1987年6月通过香港亿裕有限公司,委托我省纺织品进出口公司经办向比利时德普路易纳(Debruyne)亚麻公司以来料加工形式,进口 T/4、T/5、T/6、T/7、T/8五种型号的雨露打成麻500吨。现将原料的检测品质和纺纱质量作简要介绍。     

3种B群链球菌显色培养基性能比较研究

目的通过比较3种B群链球菌显色培养基的性能,了解国内外B群链球菌显色培养基的技术现状。方法用8株菌株和212例临床白带标本分别接种国内外3种B群链球菌显色平板或培养基制作的平板,比较目的菌生长和显色差异、杂菌被抑制和显色的差异以及临床标本的检出情况。结果 3种B群链球菌显色培养基灵敏度一致,均为92.30%(12/13),国产M1公司、进口M2公司以及进口M3公司B群链球菌显色培养基的特异性分别是98.99%(197/199)、98.49%(196/199)和96.98%(193/199),但阳性预期值差异较大,分别是85.71%(12/14)、80.00%(12/15)和66.67%(12/18),M1公司产品与M2公司产品结果差异不显著(P0.05),但M3公司产品与二者均差异显著(P0.05)。结论国产B群链球菌显色培养基的整体性能明显优于进口产品,有较大的临床应用价值。     

海藻来源ω-3需求升温

加拿大公司AlgaeBio公布了其富含EPA/DHA的海藻油发展计划。依据公司的计划,公司位于美国亚利桑那州霍尔布鲁克附近的新生产设施在2012年底的产能将达到1060kg/月,到2013年底则将达到4000kg/     

国外骑马订联动线动态分析

1.向高速发展,性能更加稳定 1万本/小时以上的装订速度,对于当前的骑马订联动线来说已不再困难,多家设备供应商都展示出设备的高速度特性,如海德堡公司ST350和ST450、马天尼公司supra 和Tempo22、浩勒(Hohner)公司HSB10000、Osako公司Tener、高斯公司Pacesetter 2500 SPX-25都能达到1万本/小时以上的速度.在这些高速机型中,马天尼Supra以3万本/小时的高速度傲视群雄.高斯Pacesetter 2500 SPX-25以2.8万本/小时紧随其后.     

Karl Mayer:新型花边机——JL 73/1和JL 83/1

图2 JL 83/1花边机的针织元件 在上海召开的2008 ITMA ASIA上,德国卡尔*迈耶(Karl Mayer)公司展出的两款新型花边机属于公司JL 42/1、JL 65/1 和JL 95/1系列.JL 73/1型带有68把提花梳栉,JL 83/1型配备的提花梳栉数可根据要求进行调整,最多可达到78把(图1和2).     

James River和Fort Howard两公司合并扩大生活用纸产量

北美两家较大的生活用纸公司JamesRiver和Fort Howard合并,成立一个新公司Fort James,合并后营业额将在1996年的基础上达到73亿美元,生活用纸生产能力将达到250万吨/年和印刷纸60万吨/年及包装纸和纸板50万吨/年。 James River已经是世界上第二大生活用纸生产厂,1996年销售总额达57亿美元。合并后Fort Howard公司的规模将接近世界最大的生活用纸生产公司Kimberly-Clark,但     

500g包装食盐计量控制改进

通过对全省市场500g包装食盐计量的抽样调查发现,公司各生产企业500g包装食盐计量单袋重量波动较大,有的甚至高达30～40g/袋,抽样分析平均单袋重量为516g/袋。为了减少公司损失,降低生产成本,降低运输过程车皮超重带来的风险,公司通过技术创新和管理创新,加强计量精细化管理,最终实现了505±5g/袋的目标,为公司创造了可观的经济效益。     

美国棉花公司流行趋势发布会

正2015年10月13日,美国棉花公司在上海市纺织研究院举办了一场关于2017年春夏流行趋势发布会。该公司是一家棉纤维研发和推广公益性组织,总部设在纽约,在上海和广州都设有办事处,宗旨是为客户提供各种免费服务。美国棉花公司这次带来了五个主题,分别是"Second Act/二次青春","Mundane/平凡之美","Mass Customization/规模定制","Suspension/临界     

光催化剂负载酰肼基活性炭除甲醛材料的制备

为解决甲醛污染生活环境的问题,利用缩合反应将聚酰肼(PAH)接枝到硝酸改性的活性炭上制备聚酰肼接枝活性炭(ACm-g-PAH),为消除其可能存在的二次污染,负载锰银掺杂纳米二氧化钛可见光光催化剂 (Mn_x/Ag_y-TiO₂)于ACm-g-PAH表面,进一步组装了自净化除甲醛材料锰银掺杂纳米二氧化钛负载聚酰肼接枝活性炭(Mn_x/Ag_y-TiO₂-l-ACm-g-PAH)。借助扫描电子显微镜、红外光谱仪对Mn_x/Ag_y-TiO₂-l-ACm-g-PAH的外观形貌和化学成分进行分析;通过软件Originpro 8.5将其催化甲醛数据与动力学方程进行拟合,并研究了其催化甲醛的动力学规律;对比分析了活化时间、活化温度和N,N-二环己基碳二亚胺(DCC)浓度对Mn_x/Ag_y-TiO₂-l-ACm-g-PAH材料甲醛移除率的影响机制。结果表明:当活化时间为2 h,活化温度为650 ℃,DCC用量为活性炭质量的2%,PAH浓度为11 mmol/L时,所制备材料Mn_x/Ag_y-TiO₂-l-ACm-g-PAH的甲醛移除率为99.6%;甲醛质量浓度在5~28.2 mg/g的范围内,Mn_x/Ag_y-TiO₂-l-ACm-g-PAH的甲醛移除率呈现衰减趋势;经过10次清洗后,材料的自净化能力减少为原来的12%。     

Desulfiting Dried Apricots by Hydrogen Peroxide

ABSTRACT: Removal of sulfites from excessively sulfited dried apricots using hydrogen peroxide (H₂O₂) was studied. Dried apricots were dipped into 0.5, 1.0, and 1.5% H₂O₂ solutions at 20 °C and 40 °C for various times. At 60 °C, apricots were also treated with 1% H₂O₂ solution. Removal of sulfites by H₂O₂ followed a 1st-order kinetic model. At 20 °C to 60 °C and 1% H₂O₂ concentration, the E_a value was 22.46 kJ mol⁻¹. H₂O₂ treatment caused lighter, more yellow, and less red dried apricots. Critical factors for H₂O₂ application are choosing the appropriate H₂O₂ concentration, temperature, and exposure time and without bleaching the natural color of dried apricots.     

Characterization of Staphylococcus xylosus and Staphylococcus carnosus isolated from Slovak meat products

The aims of this study were to isolate, identify and characterize the population of coagulase-negative staphylococci in different types of Slovak traditional sausages and to determine the metabolic properties of selected Staphylococcus xylosus and S. carnosus strains for the selection of potential starter cultures to use in the processing of sausages. The strains were tested for lactic acid production, survival in the presence of bile and sensitivity to antibiotics. Bacteriocin production, adhesion ability as well as biogenic amine (BA) production by isolates were also analysed. Most of the isolates were identified as S. xylosus and S. carnosus. Lactic acid values ranged from 0.40 to 1.03 mmol/l and strains survived in the presence of 1% bile. Most of the strains studied were sensitive to all antibiotics. Two strains, S. xylosus SO3/1M/1/2 and S. carnosus SO2/F/2/5 inhibited Listeria innocua and Pseudomonas sp. S. xylosus strains did not produce any BA, while S. carnosus SO2/F/2/5 did. S. xylosus SO3/1M/1/2 and S. carnosus SO2/F/2/5 appeared as the most adhesive strains. S. xylosus SO3/1M/1/2 with antimicrobial activity against Enterococcus avium EA5, L. innocua LMG13568 and Pseudomonas sp. SO1/1M/1/4, adhesion ability and free BA production could be used as starter culture in sausage manufacture.     

Effectiveness of wheat-applied contact insecticides against Sitophilus granarius (L.) originating from different populations

Toxicity parameters were determined for granary weevil Sitophilus granarius adults in the laboratory after treatment of wheat grains with several contact insecticides: dichlorvos, malathion, chlorpyrifos-methyl, pirimiphos-methyl, deltamethrin, and deltamethrin with the piperonyl butoxide (PBO) synergist. The impact was determined on three populations: an insecticide-susceptible laboratory population, a population originating from Belgrade Port (Serbia) selected once previously with pirimiphos-methyl at the LD₇₀ level, and one from Bijeljina (Bosnia and Herzegovina) selected once at the LD₇₀ level with deltamethrin.

After exposure of granary weevil adults to treated wheat for 48 h, deltamethrin with PBO was the most effective insecticide against the laboratory population (LD₅₀=0.10 mg/kg and LD₉₅=0.25 mg/kg) and dichlorvos the least effective (LD₅₀=1.80 mg/kg and LD₉₅=5.35 mg/kg). Regarding the selected weevils from Belgrade Port and Bijeljina, the most effective insecticide was chlorpyrifos-methyl (LD₅₀=0.25 and 0.22 mg/kg; LD₉₅=0.40 and 0.28 mg/kg, respectively), and the least effective was dichlorvos (LD₅₀=6.56 and 4.99 mg/kg; LD₉₅=26.78 and 16.14 mg/kg).

Insecticide minimum effective doses (MED) able to prevent an F₁ or F₂ generation were determined. Deltamethrin+PBO had the lowest (0.2 mg/kg) and malathion the highest MED (>5.0 mg/kg) in both generations of laboratory weevils. The lowest MED for the selected weevils from Belgrade Port was recorded for deltamethrin+PBO (0.5 mg/kg for the F₁ and 0.3 mg/kg for the F₂ generation) and the highest for dichlorvos (6.0 mg/kg for both generations); while the lowest MED for the selected Bijeljina weevils was achieved by chlorpyrifos-methyl (0.3 mg/kg for the F₁ and 0.2 mg/kg for the F₂ generation) and the highest by malathion and dichlorvos (5.0 mg/kg) in the F₁ generation, and malathion (3.0 mg/kg) in the F₂ generation.     

Pore formation in cured-smoked pork determined with image analysis-effects of tumbling and RN(-) gene

The objective of the present study was to investigate the effects of RN genotype (rn⁺/rn⁺ or RN⁻/rn⁺) and tumbling condition (tumbled or non-tumbled) on the number of undesirable pore formation in cured–smoked loins using image analysis. Even when not significant, RN⁻/rn⁺ loins contained more pores than rn⁺/rn⁺ loins. Tumbling clearly decreased the total number of pores, but increased the mean area per pore. Tumbled rn⁺/rn⁺ loins contained half the number of pores compared with tumbled RN⁻/rn⁺ loins. Even if RN genotype and tumbling influenced the number of pores they did not explain the development of pores in processed meat. The high correlations found when comparing the image analysis results with data from a trained sensory panel and visually scored images indicate that image analysis is a good tool in this type of investigations.     

Use of response surface methodology to optimise the hydrolysis of whey protein isolate in a tangential flow filter membrane reactor

Response surface methodology (RSM) was used to investigate the effects of substrate concentration (S), enzyme concentration (E) and initial permeate flow rate, (J_i), on permeate flux behaviour in a 10 kDa nominal molecular weight cut-off (NMWCO) tangential flow filter (TFF) enzyme membrane reactor (EMR) during 3 h hydrolysis of whey protein isolate (WPI) using Protease N Amano (IUB 3.4.24.28, Bacillus subtilis) at pH 7.0 and 45 °C. The average residual permeate flow rate (J_residual), residual enzyme activity (A_residual) and product recovered in permeate designated as apparent sieving (S_apparent) were monitored. The quadratic model regression equations obtained revealed that all the three factors had significant but dissimilar influences on permeate flux behaviour. J_residual, S_apparent and A_residual increased with increasing E, A_residual decreased with increasing J_i and there was substrate inhibition at low E. The optimised factors were S = 4.72% (w/v), E = 0.055% (w/v; hence E/S ≈ 1% w/w) and J_i = 6.91 mL/min (approximately 0.7% reactor volume per minute). The optimised values were 87.24%, 52.37% and 35.08% for J_residual, A_residual and S_apparent, respectively. The actual values for the responses agreed well with the predicted values implying that RSM is suitable for EMR optimisation. Covariance values showed that J_residual and S_apparent increased concomitantly while A_residual decreased with increasing S_apparent and J_residual.     

Antibacterial activity of extracts from some edible plants commonly consumed in Asia

Extracts of edible plants (26 species) from China, Japan, Thailand and Yemen were screened for their antibacterial activity against Bacillus cereus, Staphylococcus aureus, Listeria monocytogenes, Escherichia coli and Salmonella infantis. Buffered methanol (80% methanol and 20% PBS) and acetone extracted inhibitory substances against tested bacteria from 16 plants, as revealed by the disc assay. The minimum inhibitory concentrations (MICs) of extracts determined by the agar dilution method ranged from 165 to 2640 mg l⁻¹. The most sensitive microorganism to extracts from Azadirachta indica, Cinnamomum cassia, Rumex nervosus, Ruta graveolens, Thymus serpyllum and Zingiber officinale was B. cereus, with MIC of 165 to 660 mg l⁻¹. E. coli and S. infantis were only inhibited by Cinnamomum cassia extracts at the highest MIC (2640 mg l⁻¹). L. monocytogenes (Tottori) was more resistant than the ATCC 7644 strain to extracts from Ruta chalepensis, Artemisia absinthium and Cissus spp. EDTA (0.85 mM) reduced the MICs of Cinnamomum cassia and Cissus rotundifolia by at least 50% when tested against E. coli, S. infantis, S. aureus and L. monocytogenes.     

A model of the specific growth rate inhibition by weak acids in yeasts based on energy requirements

Zygosaccharomyces bailii, a spoilage yeast, capable of metabolic activity in food environments with low pH, low a_w and in the presence of weak acid preservatives was chosen for a study on the effect of benzoic acid on growth parameters. In batch cultures, under controlled pH, this food preservative inhibited growth, decreasing the specific growth rate (μ) and the yield coefficient (Y_S) on glucose. Data obtained at pH 3.5, 4.0 and 4.5 showed that this inhibition was exclusively promoted by the undissociated form of the acid since the effect was independent of pH when the concentration of the acid was expressed in this form. Moreover, the relationship between the values for μ and Y_S, provided evidence that the specific consumption rate of glucose (q_S) was not affected by benzoic acid, indicating that the inhibition of growth should be completely explained by a decrease of Y_S. The outcome of parallel experiments performed in continuous culture was that the decrease of Y_S was due to an increase of the maintenance coefficient (m), defined as the fraction of q_S diverted from growth to cope with stress, represented in this case by the presence of the preservative. Based on these results a model was built, assuming that m increased hyperbolically with the concentration of benzoic acid, from zero in the absence of the acid up to q_S when growth was completely inhibited. The concentration of the acid, for which m=q_S/2, is a constant (K_W), and represents a measure of the tolerance for a preservative, in this case benzoic acid. The simple equation μ/μ₀=1+W/K_W predicts the value of μ for a concentration (W) of the preservative, requiring the knowledge of two parameters: the specific growth rate in the absence of the preservative (μ₀) and K_W. The equation fitted very well the data of the effect of benzoic acid on the specific growth rate of Z. bailii, having K_W=0.96 mM benzoic acid. The model was also validated with other spoilage yeasts grown in the presence of benzoic acid in microtiter plates in an automated spectrophotometer. The values obtained for K_W under these conditions confirm Z. bailii as the most tolerant (K_W=2.1 mM) followed by Pichia sp. (K_W=0.78 mM), Saccharomyces cerevisiae (K_W=0.53 mM) and Debaryomyces hansenii (K_W=0.11 mM).