婴儿纸尿裤用丙纶纺粘法非织造布亲水整理探讨

研究了采用亲水剂对丙纶纺粘法非织造布亲水整理的可行性。主要介绍了整理工艺以及婴儿纸尿裤用包覆层材料亲水丙纶纺粘法非织造布的亲水评价体系以及亲水剂在非织造布中的稳定性和耐迁移性。     

丙纶非织造布亲水改性工艺研究

论述了用表面活性剂对纺粘法丙纶非织造布进行亲水化改性的机理和表面活性剂的选用要求。通过正交试验法优选出用三组分表面活性剂复配体系对丙纶非织造布整理的最优工艺条件 ,讨论了处理温度、处理时间和处理浓度对非织造布亲水性影响的规律。经整理后的纺粘法丙纶非织造布的透水时间为 1 .2s,获得了优异的亲水性改性效果     

纺粘非织造布在农业水稻育苗大棚上的应用

介绍了纺粘法非织造布在农业水稻育苗大棚上的应用及其与塑料薄膜的比较.     

丙纶纺粘法非织造布热轧工艺探讨

非织造布生产的工业化程度得到了不断的提高,它在工业、农业以及医疗等领域都得到了广泛的应用,在国民经济发展中也占有重要位置,而热轧粘合工艺在丙纶纺粘法非织造布的生产中则是比较常见的一项技术,发展前景非常的广阔,文章主要针对丙纶纺粘法非织造布热轧工艺的相关问题进行了探讨。     

中日合作开发纺粘非织造布生产线

日本神户制钢所与我国纺织工业非织造布技术开发中心利用各自优势 ,就合作制造和推广新型纺粘非织造布生产线达成共识 ,近日在沈阳正式签订了合作合同书。神户制钢所是日本第三大钢铁企业 ,所开发的纺粘法非织造布设备具有国际先进水平。“中心”是我国主要从事非织造布设备技术与设备研究的科研单位 ,已成功开发和推广了十几条年产 30 0 0 t的纺粘法丙纶热轧非织造布生产线。双方合作制造纺粘生产线既能提高纺粘技术与设备水平 ,又能降低设备造价 ,具有竞争优势。中日合作开发纺粘非织造布生产线     

阻燃丙纶纺粘非织造布的研制

本文探讨了直接添加国产阻燃剂FR—6和协同剂SB、采用共混法纺制阻燃丙纶纺粘非织造布的可行性;研究了FR—6和SB的阻燃能力及其适宜的添加量:确定了适宜的纺丝温度:研究了阻燃丙纶纺粘非织造布的宏形态结构和热性能。纺制出极限氧指数(LOI)大于26％、平方米克重为50g/m~2、具有一定的物理机械性能的阻燃丙纶纺粘非织造市.     

立足国产设备 发展纺粘工艺

本文概述了目前国外纺粘法的生产设备、生产能力等现况、介绍了国家“七五”科技攻关研制纺粘法生产线的有关成果，重点对“中心”承担的国产第一条３０００ｔ／ｙ纺粘法丙纶非织造布生产线技术特点及国产纺粘法非织造布生产线在技术和投资效益方面所占有的优势等进行了详细阐述。     

国产丙纶纺粘热轧非织造布生产线工艺分析

结合国产丙纶纺粘法非织造布生产线的实际情况,分析了相关工艺问题和解决方案。     

涤丙纶纺粘非织造布柔性生产线技术的研制

介绍了一种既能用于生产涤纶纺粘非织造布 ,又能用于生产丙纶纺粘非织造布的技术及工艺流程。关键技术是利用气流对涤丙纶丝束进行拉伸 ,同时利用气流喷射所产生的扩散作用使涤丙纶丝束螺旋摆动 ,使之均匀地铺在输送网帘上     

丙纶纺粘法非织造布用于畜牧暖棚的试验和推广

本文介绍了丙纶纺粘法非织造布作为保暖材料在新疆特区畜牧暖棚上的应用。     

多效唑浸种对盐胁迫下麻疯树幼苗光合作用的影响

研究了200mmol.L-1NaCl处理（10d）下不同浓度（0、200、400、600、800、1 000mg.L-1）多效唑（PP333）浸种处理对麻疯树南油1号幼苗生长和光合作用的影响。结果表明：在盐胁迫下,不同浓度的PP333浸种处理均显著提高了盐胁迫下的植株干物质积累速率、根冠比和叶绿素含量,提高了净光合速率（Pn）、气孔导度（Gs）、蒸腾速率（Tr）和气孔限制值（Ls）,降低了细胞间隙CO2浓度（Ci）,其中600mg.L-1PP333浸种处理效果最好。可见,多效唑浸种能促进盐胁迫下麻疯树南油1号幼苗的生长,缓解盐胁迫对麻疯树幼苗的非气孔限制,改善光合作用,减缓盐胁迫的伤害。     

基于GC-MS技术对不同产地稻米的代谢组学分析

基于气相色谱-质谱（gas chromatography-mass spectrometry,GC-MS）联用技术对建三江和响水地区的60份稻米样本进行代谢组学研究。利用主成分分析和正交偏最小二乘-判别分析等多元统计分析方法,对建三江和响水的稻米样本进行检测,在样本中共检测出143 个峰,鉴定出包括氨基酸、脂肪酸、核苷酸、有机酸、多元醇、糖类等在内的39 个代谢产物。实验考察产地对水稻代谢组的影响,结果表明建三江地区和响水地区稻米代谢产物在数量和含量上均存在显著差异。对显著变化（P＜0.05,VIP＞1）的差异代谢物进行鉴定,共筛选出16 种差异代谢产物。实验表明,利用GC-MS技术,结合多元统计分析的方法,可用于不同地区稻米代谢产物差异的研究,为稻米产地溯源提供理论依据。     

Discrimination of the cultivar,growing region,and geographical origin of rice (<Emphasis Type="Italic">Oryza sativa</Emphasis>) using a mass spectrometer-based electronic nose

The objective of this study was to discrimination the cultivar, growing region, and geographical origin of rice (Oryza sativa) using a mass spectrometry-based electronic nose (MSE-nose). The inside-needle dynamic extraction (INDEX) system was used to concentrate the samples for MSEnose, following which the ion fragment data obtained were used to perform discriminant function analysis. Discriminant functions 1 and 2 readily separated all 16 cultivars of rice sampled. It was also confirmed that MSE-nose could distinguish the region in which rice cv. Chucheong and Koshihikari were grown, likely due to variation in environmental factors, such as soil and climate. Finally, it was confirmed that MSE-nose could be used to detect the geographical origin of rice, discrimination Korea rice from Japanese rice. Therefore, this simple and rapid technique is of value for discriminating the cultivar, growing region, and geographical origin of rice.     

Effect of feeding rice grown on highly saline soils treated with zinc salts on the vitamin status of the body

The influence of the feeding of August rats with rice grown in highly saline soils, treated with different doses of industrial zinc salts, on the body providing with riboflavin, ascorbic acid, vitamins A, E and PP was studied. The meliorative-active matter was used in doses of 40 and 80 kg/hectare. The grain of the same sort grown under similar conditions but without the meliorative agent, served as control. It has been established that the feeding of the rats with rice grown in soils, treated with high doses of industrial zinc salts, produces unfavourable effect on the animals' body inducing serious disorders in vitamin metabolism.     

烤烟砂培漂浮育苗的试验与应用

为了降低育苗成本,以砂作为基质研究了烤烟砂培漂浮育苗技术。结果表明:与现行漂浮育苗比较,出苗率高且出苗整齐,大约60 d可以成苗,成苗率和壮苗率较高;在出苗后至大十字期前,烟苗生长缓慢,生育期晚2~3 d;大十字期后,烟苗生长迅速,生育期与现行漂浮育苗一致;烟苗茎粗、茎高、最大叶面积、干物质积累量、总根数以及根系活力、硝酸还原酶活性、叶绿素含量的变化均表现出烟苗生长前期缓慢增长,后期急剧上升;至成苗后期,根系活力、硝酸还原酶活性、叶绿素含量又有所下降。砂培漂浮育苗的烟苗根系发达、生长健壮整体素质好,育苗成本较现行漂浮育苗降低56.58%。     

不同包装条件对米糠贮藏稳定性的影响

米糠资源营养丰富,具有很高的开发利用价值,但其贮藏稳定性差导致品质迅速下降。本实验以米糠为研究对象,分析自然贮藏条件下采用PE、PE/PA及编织袋包装的米糠在常压密封、真空密封条件下主要品质指标变化。结果发现：贮藏30d后,PE/PA/真空组水分含量下降0.99%,粗脂肪含量下降3.74%,脂肪酸值升高77.7mg KOH/100g,而对照组相应指标分别为PE/PA/真空组的3.6、2、5.33倍;PE/PA/真空组VE、γ-谷维素含量分别下降了0.4mg/100g、0.01%,对照组降幅分别是PE/PA/真空组的2.78倍和6倍;菌落总数PE/PA/真空组由初期的2.82×108CFU/g减少到0.3×107CFU/g,性状保持良好,具有米糠特有的香味,而对照组菌落总数增加到1.8×1010CFU/g,且出现明显的霉味,颜色变深,结块严重。结果表明不同包装对提高米糠贮藏稳定性效果依次为：PE/PA/真空＞PE/PA/常压＞PE/真空＞PE/常压＞编织袋＞对照,各样品结果呈显著差异(P＜0.05)。采用PE/PA真空包装贮藏能有效提高米糠贮藏期品质稳定性。     

基于近红外光谱技术对多年际建三江、五常大米产地溯源

研究多年际地理标志大米产地溯源判别技术,保护地理标志大米的品牌效益。利用近红外漫反射光谱技术对试验田样品进行与产地有关的特征波段筛选,并在其范围内对2013—2015年来自建三江地区及五常地区的291?份大米样品进行产地溯源研究。结果表明,试验田样品在波段为5?136～5?501?cm－1范围内产地因素差异显著。在此范围内利用因子化法建立的定性分析模型及聚类分析模型对建三江大米及五常大米的正确判别率均高于97.00%。利用偏最小二乘法建立的定量分析模对两地区大米的正确判别率分别为95.83%、94.00%。因此,应用该技术对多年份大米的产地溯源进行判别具有一定的可行性。     

Interactions of Several Bile Acids with Hemicelluloses from Several Varieties of Rice

Purified and crude preparations of rice hemicellulose from rice bran, whole rice (brown rice), and milled rice were incubated with four bile acids (cholic, glycocholic, taurocholic, and glycotaurocholic acids) under in vitro conditions of pH, temperature, salinity, time for interaction and so forth to approximate conditions normally found in the intestinal tract. The amounts of bile acids bound gradually increased as the concentration of rice extract increased for all rice varieties, with whole rice extract or rice bran extract. Results suggest an effect of growing areas on the binding properties of rice bran and milled rice.     

Relationships between minerals in Australian brown rice

Ninety samples of brown rice cv Amaroo, which has occupied over 50% of the area sown to rice in southern Australia in the last two seasons, were collected from the rice growing regions of southern Australia at the end of the 1991–1992 season. The samples were analysed for total nitrogen using the Kjeldahl technique, and for P, K, S, Mg, Ca, Na, Al, Cu, Fe, Mn, Mo and Zn using inductively coupled plasma emission spectroscopy. The analysis of concentrations of elements show that Mn concentrations in Australian rice were higher and Ca concentrations lower than typical values reported for brown rice grown in other countries. For all other elements the concentrations had a similar range to those reported for overseas rice. Highly significant correlations were found between the major nutrients P, K and Mg, and also N and S. The Mg to K ratio ranged from 1·3 to 1·6 which indicates that, if Japanese criteria are used, the taste/stickiness quality within this cultivar of Australian rice could vary from undesirable to highly desirable.     

Antioxidant efficacy of phytochemical extracts from defatted rice bran in in-vitro model emulsions

Defatted rice bran (DRB) is the byproduct of rice bran oil extraction. On HPLC analysis, methanolic extracts prepared from DRB was found to contain oryzanols (OYL), tocols and ferulic acid (FA). Solvent fractionation was employed to prepare extracts enriched with beneficial phytochemicals from crude methanolic extract (CME). The antioxidant potential of DRB extracts and their phytochemical constituents in emulsified media were evaluated by linoleic acid emulsion system and β‐carotene bleaching test. In linoleic acid model, the activity indexed as percent inhibition values followed the order TBHQ (83.9) > BHT (60.1) > AE‐PP = AE‐LP = OYL = tricin (51.7) > Tmix (48.0) > FA (44.1) > AE (36.0) > CME (29.9) > sterol (22.8) with inhibition percentages at 200 ppm levels given in parentheses. The order for the β‐carotene model was TBHQ (75.2) > BHT (54.1) > OYL = tricin = AE‐LP = AE‐PP (47.2) > Tmix (43.9) > FA (41.0) > AE (29.9) > CME (25.1) > sterol (20.1), with inhibition percentages at 200 ppm levels given in parentheses. The results demonstrated that DRB extracts could be used as antioxidant substitutes in heterogeneous food matrix and could also be used in protecting both linoleic acid and β‐carotene against oxidation. The increase in activity with purification might be due to enhanced levels of antioxidants in purified extracts as compared to CME.