锦纶敏感色速染工艺探讨

介绍了影响锦纶染色匀染性的主要因素,采用速染工艺和传统工艺对锦纶进行湖绿色染色,对比了不同工艺对锦纶染色的缓染性、匀染性、移染性等的影响。结果表明,速染工艺具有较强的缓染性、移染性,较慢的上染速率,优良的匀染性及颜色稳定性;染色牢度和最终得色量达到传统工艺效果的同时,并能缩短染色工艺时间约50 min;无铵盐的使用可以降低废水氨氮含量,符合节能减排、绿色生产的要求。

EDN型活性染料在敏感色染色工艺的应用

采用超分子EDN型活性染料对筒子纱敏感色染色,通过染色小样试验测试了该类染料对盐碱、浴比敏感度,并通过对咖啡色、灰绿色两种敏感色的大样染色生产试验,对比分析了EDN型与双活性基型两组染料不同工艺处方下的颜色特征值、染色牢度和一次成功率。结果表明,EDN型系列活性染料对浴比、盐碱要求相对较低,具有匀染性好、染色重现性高、染色一次成功率高的优点。

腈纶与备长炭黏胶轻薄织物敏感色防色疵研究

腈纶与备长炭黏胶纤维混纺轻薄针织物中两种纤维的性能差别大,特别是备长炭黏胶纤维染整加工难度大,尤其是敏感色,很容易产生染花现象。文中通过研究预定形温度、腈纶染色升温方法、腈纶匀染剂用量、黏胶用元明粉用量及纯碱用量等工序,选择最佳工艺参数,解决面料敏感色染花现象,以提升面料染整加工质量和效率。经生产实践验证,腈纶与备长炭纤维混纺轻薄针织物敏感色防色疵工艺是可行的。

用于富集磷酸化合物的温度敏感亲和色谱材料的制备及其应用

基于可逆加成断裂链转移聚合(RAFT)法,通过快速引入官能团的方式合成了固定化金属离子温度敏感亲和色谱材料二氧化硅@聚(N-异丙基丙烯酰胺-co-氨甲基膦酸)-钛离子(Ⅳ)(silica@p(NIPAAm-co-AMPA)-Ti^(4+)),并应用于HPLC中。采用红外光谱、X-射线光电子能谱、热失重和差示量热法对制备的材料进行表征,证明该材料被成功合成并具有较好的温度敏感性能。将该材料用于三磷酸腺苷(ATP)标准品的富集与分离,实现了仅通过改变固定相温度的方式来达到富集与分离小分子磷酸化合物的目的,为富集分离磷酸化肽段奠定了基础。同时该材料还能以在线补充钛离子的方式延长使用寿命。

蒸化因素对敏感色活性染料印花产品质量的影响研究

研究了蒸化因素对敏感色用单组分活性染料和拼混染料印花产品的影响,结果表明:蒸化湿度在70%~80%以及蒸化时间6~8 min时,敏感色活性染料印花产品的相对色深较为稳定。当蒸化湿度小于68%,蒸化时间小于4 min时,部分活性染料的在棉纤维上的相对色深明显降低。对于印花用敏感色拼混染料,需要考虑蒸化因素对单组分活性染料影响趋势的一致性。蒸化因素的合理控制,是印染产品质量保障的重要因素。

薄膜型敏感元件近况简介

薄膜材料的研究为许多领域提供了新颖的功能材料,发展了新型的功能器件。本文旨在着重介绍近年来薄膜型压力、温度、光敏、色敏、磁敏的国内外研究与开发现状。 1 薄膜型压力敏感元件 1.1 多晶硅、微晶硅压力敏感元件 国外,美国威斯康森大学在有预设氧化隔离层的硅衬底上,采用LPCVD技术淀积微晶粒多晶硅膜,制成压敏电阻。由于器件是全硅结构,消除了膨胀系数不同的影响,在工艺上取消了正反面对准和KOH腐蚀;以薄膜技术,得到严格的尺寸容差,并已研制出具有12×12阵列、量程为一个大气压的器件。

冲淡式干扰技术在防护红外双色末敏弹攻击装甲目标中的应用研究

根据红外双色敏感器的运动探测特性,建立了探测概率模型,对红外双色末敏弹的探测概率、命中概率进行了分析计算,在此基础上设计了冲淡式干扰效果的定量分析方法。结果表明,冲淡式干扰的有效概率主要与真假目标的扫描位序、单次干扰有效概率、真假目标分布、末敏弹布撒分布特性等因素有关。

一种具有隐私保护功能的多模态智能监控系统

针对当前视频监控泄漏个人隐私的问题,笔者设计了一种利用视频、音频特征综合判别监控区异常情况的系统。选取两种模态易于提取的特征:视频模态的运动面积、运动速度特征和音频模态的短时能量、短时过零率特征。结合人体运动、温度、湿度和烟雾等传感器信息对监控区域进行综合判断。监控设备不存储和传输视频、音频信息,只传输特征值,在一定程度上起到了保护隐私的作用。

室内暴力智能监控系统设计

介绍了一种基于视频的室内暴力监控系统。主要通过图像敏感色检测、图像帧序列的运动检测两个方面进行暴力事件监控识别,再利用计算机对监控信息进行分析处理,把计算机分析的结果传送到监控者手中。

Mechanized Seed Production of Xinhunyou No.6 through Mixed Seeding of Parents' Seeds

Hybrid rice Xinhunyou No. 6 could be cultivated by mixing male and fe- male parents and performing seedling raising followed by transplanting, mechanical planting or mechanical direct seeding according to the production methods of com- mercial rice. During flowering stage, leaf cutting, application of ＂920＂ and pollination were conducted; after pollination, bentazon with a certain concentration was sprayed to kill the male parent; and the hybrid rice was harvested mechanically. Before storage, color separation was performed to remove little remaining male parent, thereby achieving whole-process mechanization of hybrid rice seed production. This study introduced mechanized seed production of Xinhunyou No. 6 through mixed- seeding from the aspects including mechanical direct seeding, seeding raising fol- lowed by transplanting and mechanical planting.

活性染料在浸染加工中的合理选用

简述了浸染用活性染料的基本性能要求,包括溶解度和耐盐碱性;介绍了其基本类型,包括活性基为二氯均三嗪的低温型活性染料、活性基为双一氯均三嗪的高温型活性染料、活性基为乙烯砜类的中温型活性染料、活性基为一氯均三嗪和乙烯砜的异双活性基染料、活性基为一氟均三嗪和乙烯砜的异双活性基染料;针对印染企业加工浅、中、深、特深、敏感色以及其他要求等,分析了染料选用的高性价比原则、浅中色系列活性染料的选用、中深色系列活性染料的选用、特深色系列活性染料、敏感色系活性染料的选用。指出合理选择浸染用活性染料,首先要了解染料本身的化学结构,掌握织物染色后的加工环境及色牢度要求,精心设计科学合理的染色工艺,才能达到保证生产质量、降低生产成本的目的。

对Z^0三喷注事例中色联接敏感可观测量的研究

将末态部分子的色分离联接引入JETSET事例产生器 ,通过用喷注的DURHAM判据ycut及用喷注夹角限制事例形状 ,对Z0 衰变进行三喷注事例挑选 ,发现可以得到对色联接敏感的三喷注事例 .对于这类事例 ,末态强子的平均带电多重数及胶子喷注中的一系列可观测量对色联接的敏感性随ycut值的减小而增大 ;在小ycut值时 ,色中性流和色分离两种联接导致了显著差别 .使通过实验测量鉴别部分子的色联接成为可能 .

DIFFERENCE IN BIOLOGICAL CHARACTERISTICS AND SENSITIVITY TO CHEMOTHERAPY AND RADIOTHERAPY BETWEEN INTRAHEPATIC AND EXTRAHEPATIC CHOLANGIOCARCINOMA CELLS IN VITRO

Objective To investigate and compare the biological characteristics and sensitivity to chemotherapy and radiotherapy of intrahepatic and extrahepatic cholangiocarcinoma cells in vitro.Methods The intrahepatic and extrahepatic cholangiocarcinoma cell lines were established,and cells with steady passage were chosen to study the biological characteristics including morphology,growth dynamics,chromosome,and levels of cancer antigen(CA)125,CA19-9,alpha-fetoprotein(AFP),and carcino-embryonic antigen(CEA).Meanwhile,MTT assay was used to determine the sensitivity of both kinds of cells to 6 chemotherapeutic drugs,including cisplatin,paclitaxel,harringtonine,5-fluorouracil,vincristine,and aclacimomycin,and the inhibitory rate of cells under the irradiation of 10 Gy ray was also measured.Results The intrahepatic cholangiocarcinoma cells were mostly fusiform in shape,and extrahepatic cholangiocarcinoma cells were mostly round or polygon in shape.Their doubling time was 26.3 hours and 23.1 hours,respectively.Their average number of chromosomes was 59(range,38-84)and 67(range,49-103),respectively.The chromosome karyotypes of most intrahepatic cholangiocarcinoma cells were hyperdiploid and hypotriploid,while hypertriploid was predominant in extrahepatic cholangiocarcinoma cells.The level of CA 125 in supernatant of extrahepatic cholangiocarcinoma cells increased obviously,while levels of other determined tumor markers in both kinds of cells were all within normal range.The intrahepatic cholangiocarcinoma cells were low sensitive to cisplatin and paclitaxel,but not sensitive to the other 4 chemotherapeutic drugs.The extrahepatic cholangiocarcinoma cells were high sensitive to cisplatin,but not sensitive to the other 5 drugs.Both kinds of cells had poor sensitivity to radiotherapy.Conclusions Intrahepatic and extrahepatic cholangiocarcinoma cells show differences in shape,doubling time,chromosome karyotype,tumor marker level,and chemosensitivity,whereas they both have poor radiosensitivity.Though they are similar in histopathology,they have different growth characteristics and have discrepancy in treatment and prognosis.

EFFECT OF NIMODIPINE ON OCULAR BLOOD FLOW AND COLOR CONTRAST SENSITIVITY IN PATIENTS WITH NOR-MAL TENSION GLAUCOMA

Background: To investigate the effects of oral nimodipine on ocular hemodynamic parameters and color contrast sensitivity in patients with normal tension glaucoma (NTG). Methods: The study was performed in 14 consecutive NTG patients in a randomized placebo controlled double-masked cross-over design. The effects or oral nimodipine (60 mg) or placebo on ocular and systemic hemodynamic parameters and color contrast

A highly sensitive SPE-liquid/liquid extraction-RPLC analytical method for the determination of 6β-hydroxycortisol and cortisol in cancer patients' urine

A highly sensitive SPE-liquid/liquid extraction RPLC method has been developed for the analysis of 6β-hydroxycortisol and cortisol in the urine of cancer patients. Methods： After SPE column purification and liquid-liquid extraction, the sample test solutions were analyzed with RPLC using a C18 analytical column. This improved analytical method has been validated for linearity, accuracy （recovery from urine）, repeatability （within-day and between-day precision）, specificity, sensitivity, and stability. This SPE-liquid/liquid extraction-RPLC is rapid, simple, accurate and reproducible. The technique is particularly useful for monitoring the CYP3A activity of cancer patients in clinical settings. The results are expressed as the ratio of 6β-hydroxycortisol to cortisol. Results： The CYP3A activity from a total of 153 samples was measured using this improved method. Considerable variation in the CYP3A activity of different cancer patients has been documented. Thus, personalized medical treatment based on the individual metabolic enzyme activity level is necessary. Conclusion： This new analytical method facilitates such individualized medical treatments.

Effect of Fusariosis on the Metabolism of Phenolics Compounds of Date Palm Leaflets, Resistant and Sensitive to the Disease

Because of socio-economic importance of date palm in North Africa, the scientific community has always followed the progression of parasitic disease that affects it. The study was performed on population of thirty palm trees belonging to three cultivars of the oases of south-west Algeria TOUAT Gourara. The analytical protocol consists of a hot hydrochloric acid hydrolysis of I g of leaf material dried and ground. Structural analysis of compounds present in extracts was conducted by chromatographic and spectrophotometric techniques. Through the analysis of all HPLC profiles of phenolic acids, we have established three chemotypes： resistant with the highest heights, sensitive, with the lowest height, finally low sensitivity or tolerant with intermediate heights. The increased synthesis of C-glycoflavones, within diseased palms, can be seen as the first sign of plant response to fungal attack, or even as a defense mechanism so these flavonoids correspond to ＂pre-inhibitines＂. It has not been found qualitative differences between different cultivars studied. The merits of our work show a negative correlation between flavonoid content and the level of lignification in the date palm, suggests that the process of lignification is more rapid in resistant cultivars. We can say that there is a constitutive resistance.

Empirical Study on Chemotherapeutic Susceptibility of SP Cells in Human Pulmonary Adenocarcinoma Cell Line A549 in Vitro

OBJECTIVE To explore the chemotherapeutic susceptibility of SP cells in human pulmonary adenocarcinoma cell line A549 and the possible mechanism of multidrug resistance.METHODS SP and non-SP （NSP） cells in the cell line A549 were isolated by fluorescence activated cell sorter. The susceptibility of SP and NSP cells to DDP, 5-FU, VP16, NVB and GEM was detected by a drug susceptibility test, and IC50s were calculated 24 h a er the chemotherapy; and then a er a 2-hour IC50 treatment with 5 chemotherapeutic drugs on the 2 subsets of NSP cells, the intracellular drug levels were determined and analyzed using high performance liquid chromatograph.RESULTS There was no statistical signifi cance in comparison of the di. erences in IC50s and in intracellular drug levels a er DDP treatment between the 2 subsets （P 〉 0.05）, （P 〉 0.05）. However,all IC50s of the other 4 drugs were significantly higher in the SP cells than in the NSP cells （P 〈 0.01）. A er the chemotherapy, the intracellular drug levels of the other 4 drugs were significantly lower in SP cells than in NSP cells （P 〈 0.01）.CONCLUSION Compared to NSP cells, SP cells in the cell line A549 have stronger resistance to the chemotherapeutics. The multidrug resistance of SP cells closely correlates with the function of SP cells discharging chemotherapeutic agents.

Redox-sensitive colorimetric polyaniline nanoprobes synthesized by a solvent=shift process

We have synthesized water-stable polyaniline nanoparticles coated with tri- armed polyethylene glycol chains using a solvent-shift method and confirmed their colloidal size and aqueous solubility. Furthermore, we have demonstrated that the polyaniline nanoparticles can be doped with biological dopants to produce distinct color changes allowing the detection of live cancer cells.

Dangfei Liganning Capsules (当飞利肝宁胶囊) Attenuate the Susceptibility of Rat Nonalcoholic Fatty Liver to Carbon Tetrachloride Toxicity

Objective: To test whether nonalcoholic hepatic steatosis sensitizes carbon tetrachloride (CCl4)-induced liver injury, and to assess the therapeutic effect of Chinese medicine extracts of Dangfei Liganning capsules (当飞利肝宁胶囊) and their potential underlying mechanisms. Methods: Male Wistar rats were fed a high-fat diet to induce nonalcoholic fatty liver disease (NAFLD) or a normal diet (N). Eight weeks later, a nonlethal dose of CCl4 was applied intraperitoneally. From the start, HF-CCl4 rats were administered daily Dangyao extracts (D), Dangfei Liganning capsules (DF), or Diammonium Glycyrrhizinate (G) intragastrically. Rats were sacrificed 48 h after CCl4 administration. In addition to serum biochemistry, liver histopathology was observed using hematoxylin-eosin (HE) and oil red O staining, and hepatic levels of triglyceride (TG), malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), caspase-3 activation and cytochrome P450 (CYP2E1) expression were assessed. Results: There was almost no response to the nonlethal dose of CCl4 in the N control group. However, the HF group demonstrated massive steatosis, and elevated levels of serum ALT and AST, liver MDA, CYP2E1, and caspase-3 activation, whereas the levels of GSH and SOD were significantly decreased. All indexes assessed were dramatically worse in the HF-CCl4 group compared to the HF group, in addition to the more severe steatosis, hepatocyte ballooning, and inflammatory infiltration apparent in the centrilobular area. The medicines we tested affected the pathological changes in HF-CCl4 rats to differing degrees: DF and G led to improvements in all of the above examined indexes, including an obvious improvement in histopathology, and DF improved serum ALT and MDA levels more markedly than G, whereas D extracts produced only mild liver injury attenuation. Conclusion: Liver with NAFLD is more sensitive to hepatotoxicity; furthermore, the disrupted balance of oxidative stress and anti-oxidant defense contributes to the underlying mechanisms. Dangfei Liganning capsules potentially decrease this toxic susceptibility and alleviate liver injury in non-alcoholic fatty liver.

A model study of the equation of state,quark-number susceptibility and scalar susceptibility of QCD at finite chemical potential and zero temperature

In this article,we try to calculate the equation of state(EOS) of quantum chromodynamics(QCD) at finite chemical potential and zero temperature in the framework of a nonperturbative QCD model.Compared with the cold,perturbative EOS of QCD proposed by Fraga et al.,our EOS approaches more fastly to the free quark gas result at large chemical potential.It is expected that our EOS can provide a possible new tool for the study of neutron star.We also try to provide a direct approach for calculating quark number susceptibility and scalar susceptibility at finite chemical potential and zero temperature.