网络电视原声咱能录

办公室的小王很喜欢网络电视里播放的综艺节目,想要将原声录制起来保存,于是来找笔者帮忙。同事既然开口,笔者义不容辞,很快就为他找到了一种完美的解决方案,并送给他一件宝贝     

Lymphatic transport in rats of interesterified oils containing conjugated linoleic acids

In this study we examined the lymphatic transport in rats of FA after administration of interesterified oils containing CLA, with emphasis on the location of CLA and octanoic acid in the TAG. The oils were produced by enzymatic interesterification. Eight oils with different structures or FA profiles were examined in this study: MCM, CMC, OCO, and COC, where M was expected to be octanoic acid and O oleic acid. In group 1, C was CLA as a mixture of the two CLA isomers c9, t11 or t10, c12, and in group 2, C was mainly the isomer t10, c12. Rats were subjected to cannulation of the mesenteric lymph duct, and the following day they were intragastrically administered one of the oils and lymph samples were collected for 24 h. The lymphatic transport of total FA from 0 to 8 h in group 1 was significantly (P < 0.05) higher for the OCO-1 and the COC-1 oils than for the CMC-1 oil. Similarly, in group 2 the transport was higher for the OCO-2 oil than for the CMC-2 oil. The recovery of both of the CLA isomers examined was similar (50-70%) and independent of the isomer, oil structure, and FA profile, whereas more octanoic acid was recovered from the CMC oils than from the MCM oils. The results indicated that the FA profiles and the position of octanoic acid had only a minor influence on the absorption of CLA.     

Absorption by rats of tocopherols present in edible vegetable oils

The absorption of tocopherols (α, γ, and σ) and fatty acids from rapeseed (RO), soybean (SOO), and sunflower (SUO) oil, both from the natural oils and from the oils following moderate heating (180°C for 15 min), was measured in lymphcannulated rats. Oils were administered as emulsions through a gastrostomy tube, and lymph samples were collected for 24 h. The composition of tocopherols in oils and lymph fractions was measured by high-performance liquid chromatography, and fatty acids were measured by gas-liquid chromatography. The highest accumulated transport of α-tocopherol was observed after SUO administration, the lowest after SOO, with RO in between, corresponding to their relative contents (41.6±8.8, 32.7±5.0, and 24.9±4.3 μg at 24 h after administration of SUO, RO, and SOO, respectively). The calculated recoveries (in %) 24 h after oil administration were 21.4±4.5, 45.7±7.0, and 78.8±13.5 for SUO, RO, and SOO, respectively, suggesting that the absorption efficiency decreased when the α-tocopherol concentration increased. The recovery of α-tocopherol was higher than the recoveries of γ-and σ-tocopherol, indicating that the different tocopherols were not absorbed to the same extent or with similar rates. No differences between unheated and heated oils were observed in the absorption of tocopherols, whereas heating led to lower absorption of fatty acids, thus showing no direct association between absorption of tocopherols and fatty acids.     

Robotic control in knee joint replacement surgery

A brief history of robotic systems in knee arthroplasty is provided. The place of autonomous robots is then discussed and compared to more recent 'hands-on' robotic systems that can be more cost effective. The case is made for robotic systems to have a clear justification, with improved benefits compared to those from cheaper navigation systems. A number of more recent, smaller, robot systems for knee arthroplasty are also described. A specific example is given of an active constraint medical robot, the ACROBOT system, used in a prospective randomized controlled trial of unicondylar robotic knee arthroplasty in which the robot was compared to conventional surgery. The results of the trial are presented together with a discussion of the need for measures of accuracy to be introduced so that the efficacy of the robotic surgery can be immediately identified, rather than have to wait for a number of years before long-term clinical improvements can be demonstrated.     

Use of sesame stalk biomass for the removal of Ni(II) and Zn(II) from aqueous solutions

In this study an agricultural residue, sesame stalk, was evaluated for the removal of Ni(II) and Zn(II) metal ions from aqueous solutions. Biosorption studies were carried out at different pH, biosorbent dosage, initial metal ion concentrations, contact time, and solution temperature to determine the optimum conditions. The experimental data were modeled by Langmuir, Freundlich, Dubinin-Radushkevich (D-R) and Temkin isotherm models. Langmuir model resulted in the best fit of the biosorption data. The pseudo-first-order and pseudo-second-order kinetic models were used to describe the kinetic data and to evaluate rate constants. The best correlation was provided by the second-order kinetic model. The thermodynamic parameters such as ΔG°, ΔH° and ΔS° were calculated for predicting the nature of adsorption. The experimental results showed that sesame stalk can be used as an effective and low-cost biosorbent precursor for the removal of heavy metal ions from aqueous solutions.     

Research on One High Precision Megnetic Heading System Based on on-line Estimation and Correction of Remnant Devia-tion with Neural Network

Compassisonekindofclassicalheadinginstrument,comparedtootherheadingsystems,issmallerinsize,lighterinweight,quickerinreacationandmorereliableandsoon,especialywhenotherde-vicesarebrokendown,itbecametheonlyoneheadingdevice,soitisveryimportantinships.Butbecauseithaslowprecision,itonlyactsasoneauxiliaryheadingdevice.Ontheotherhand,compasshasdeviationthatcanchangewithtimepassing,soithastobecor-rectedtimeandtimesothatitcansatisfytherequest.Andatthesametime,thecorrectionofdeviationisrealizedbyhand,whi…     

生物质用于焦炭和烧结生产的实验室评价

生物质作为碳可供选择的环保替代燃料,用其进行炼焦和炼铁是一个非常好的选择,因此,应该积极调查、研究如何采取不同的方法利用生物质,以减少硫化物、氮氧化物、二氧化碳的排放和可能的成本投入。对生物质在炼焦生产与烧结生产中的实用性在独立的试验中进行评估。生物质对炼焦生产的实用性研究如下:将1%～5%的木质生物质或是焙烤(轻度热解)的木质生物质作为部分高挥发性煤的替代物添加至配合煤中,在实验室焦炉中进行碳化试验。试验结果表明,当把粉碎的生物质加入到配合煤后,焦化压力显著降低,同时焦炭的硫含量下降,但是焦炭的高温强度和力学性能亦有轻微下降,但这种实测强度的降低需要进一步的研究。另外,在一系列独立试验中,通过利用生物质(分别是锯末、粉碎的玉米芯、树皮、木炭等)作为烧结用粉焦的替代燃料在实验室烧结锅进行评估。试验中,燃料用10%、20%、30%、40%的生物质代替。试验结果显示,烧结混合料的堆密度和烧结时间都有下降,添加了生物质的烧结矿质量没有显著恶化。这些初步的试验表明,在实际的炼焦与炼铁生产中生物质很有可能作为一种可再生能源替代部分传统的化石燃料。为了某种特定应用而进行产品优化则需要额外试验。     

禁止MSN Messenger自动运行二法

使用Windows XP的朋友一定对影子一样的MSNMessenger(以下简称MSN)感到烦恼,无论是系统启动或是打开Outlook Express(以下简称OE),它总是自动运行并向你提示它的存在。尽管我们可以通过系统配置实用程序禁止它在系统启动时运行,但却不能阻止它随OE启动。对于不经常使用MSN的用户,可以通过以下方法禁止它: 方法一:在“开始”→“运行”文本框中输入“Gpedit.msc”,运行组策略程序。在组策略的左侧窗格中依次展开“计算机配置”→“管理模板”→“Windows组件”→     

CPR artifact removal from human ECG using optimal multichannel filtering

The purpose of this study was to assess whether the artifacts presented by precordial compressions during cardiopulmonary resuscitation could be removed from the human electrocardiogram (ECG) using a filtering approach. This would allow analysis and defibrillator charging during ongoing precordial compressions yielding a very important clinical improvement to the treatment of cardiac arrest patients. In this investigation we started with noise-free human ECGs with ventricular fibrillation (VF) and ventricular tachycardia (VT) records. To simulate a realistic resuscitation situation, we added a weighted artifact signal to the human ECG, where the weight factor was chosen to provide the desired signal-to-noise ratio (SNR) level. As artifact signals we used ECGs recorded from animals in asystole during precordial compressions at rates 60, 90, and 120 compressions/min. The compression depth and the thorax impedance was also recorded. In a real-life situation such reference signals are available and, using an adaptive multichannel Wiener filter, we construct an estimate of the artifact signal, which subsequently can be subtracted from the noisy human ECG signal. The success of the proposed method is demonstrated through graphic examples, SNR, and rhythm classification evaluations.