毛细管区带电泳的紫外可见光吸收检测

利用紫外可见光吸收方法完成毛细管区带电泳的检测工作，本文就实验装置，实验结果进行了讨论。     

用Delphi 6.0+object Pascal语言开发的丙酮碘化实验软件

利用Delphi6．0 object Pascal语言开发的丙酮碘化实验软件。本软件利用Delphi6．0所带的控件，实现了从分光光度计数据直接采集到数据处理，图形化显示及结果处理一整套过程，利用该软件和所配套的实验设施，可方便地开展丙酮碘化实验。该软件不需要任何应用软件支持，可以在Windows98／XP下直接运行，具有界面友好，操作方便，图形化显示，运行稳定性很好等优点。     

膜分离技术在渗滤液性质表征中的应用

用不同孔径的系列滤膜对上海市废弃物老港处置场的新鲜渗滤液、1991年垃圾产生的渗滤液进行了梯度分离，研究了COD、浊度的变化趋势以及紫外可见光吸光度与不同孔径膜之间的关系。结果表明：经过膜的梯度分离后，出水的COD值、浊度整体上呈降低趋势．但降低程度不等，膜材质和孔径对梯度分离有少许干扰；对各膜过滤后的出水进行紫外可见光扫描所得的曲线形状基本一致，但吸收峰向紫外区偏移。     

有机液体吸光度检测仪的开发应用

湿法冶金生产工艺中,有机萃取是常见的工艺,生产过程中有机液体的颜色及色深(吸光度),是工艺指标性参数,但是对于有机液体的在线测量,因缺乏成熟的仪器,目前大多靠人眼目测和实验室比对的方式。我们以比尔-朗伯定律为理论依据,通过对有机液体吸光度变化与光电吸收关系的研究,开发了有机液体吸光度检测仪,并投入了现场应用,取得了良好的效果。     

Giant photoresponsivity of transfer free grown fluorographene – MoS2 heterostructured ultra-stable transistors

Development of metal dichalcogenides based air and water stable opto-electronic devices is a bottleneck in their commercial implementation. Here we address this issue by the direct catalyst-free deposition of fluorographene (FG) protective layer over monolayer MoS₂ (MS), where such an atomic interface is found to be providing enormous photoresponse and chemical stability to the device. Electric field modulated (ionic liquid (IL) electrolyte based top-gated) photodetectors are developed with MS only and FG-MS heterostructure, where the MS photodetector has the responsivity of ~1.3 A/W (with V_GS = 0 V while unstable with IL gating) while that of FG-MS is ~2000 A/W (with V_GS = 0 V and ~8000 A/W with V_GS = 1.5 V, and the detectivity ~10¹³). This giant photoresponse of the FG-MS is validated with the help of ultrafast transient absorption spectroscopy assisted charge carrier dynamics studies at different temperatures. The broad optical response (350–850 nm) of the FG-MS is found to be intact not only in IL based gating but also after exposing in water for a month or heat treated in air at 200 °C. Interfacing and capping with FG, developed via the direct growth method, are found to be ideal for realizing high shelf-life and good responsivity photodetectors and solar cells of several other monolayer TMDs too, while available for wafer-scale manufacture.     

玉米黄色素的稳定性研究

主要研究了玉米黄色素的稳定性.该色素耐光性、耐热性较差,对氧化剂极不稳定,对Al3 、Fe3 等离子稳定性较差,而对酸、碱、还原剂、食品添加剂及Na 、K 等离子较稳定.     

重水浓度与吸光度关系曲线类型研究

重水作为反应堆的慢化材料,其浓度直接影响反应堆的安全和性能。为研究其重水浓度与吸光度间的关系曲线类型,基于朗伯-比尔定律,从理论上推导出液态重水中某种水分子的红外吸收峰分别与0~2种其他水分子的红外吸收峰发生重叠时重水浓度与吸光度间的关系式,分情况对二者之间的关系曲线类型进行讨论。采用傅里叶变换红外光谱仪,测得浓度为0.015%~99.98%（摩尔比）的重水标准样品吸收光谱,对重水浓度和吸光度间的关系曲线类型进行验证,理论推导与实际吻合。研究表明,一般情况下,宽浓度范围内,重水浓度与吸光度间的关系曲线类型为二次曲线;窄浓度范围内,关系曲线类型为线性。特殊情况下,吸光度为定值或关系曲线类型为线性。     

不同品种荔枝果肉细胞抗氧化及抗增殖活性评价

为明确荔枝果肉的生物抗氧化和抗肿瘤保健功能,采用HepG2人肝癌细胞模型对我国南方地区主要种植的10种代表性荔枝品种果肉的细胞抗氧化活性(CAA值)和抗肿瘤细胞增殖活性进行了评价。结果表明,10种荔枝品种中,妃子笑荔枝果肉具有最大的CAA值,淮枝则最小;妃子笑抗HepG2肿瘤细胞增殖活性最强,糯米糍则最弱。荔枝果肉的CAA值与总多酚含量、总黄酮含量、多酚化学抗氧化能力指数(ORAC值)之间都有极显著的正相关性(p0.01),且与黄酮含量之间正相关性最大,说明荔枝果肉中起生物抗氧化作用的主要成分是黄酮类化合物;但荔枝果肉对HepG2肿瘤细胞的抗增殖活性与总多酚含量、总黄酮含量、ORAC和CAA值之间均呈现较弱的负相关性(p0.05),提示某些特殊酚类单体或其协同作用在抗肿瘤细胞增殖过程中发挥主要作用。     

乙缩醛溶液的脱色研究

以乙缩醛生产过程中精馏塔塔底有色高沸物为研究对象,分别以粒状活性炭、硅藻土、活性白土和粉煤灰为脱色剂,考察了其脱色的可能性,发现活性炭对其脱色最有效。以脱色温度、活性炭用量、脱色时间和搅拌强度为实验因素,以脱色率为考察指标,分别用单因素实验和正交实验对乙缩醛溶液进行了脱色研究,最终确定乙缩醛溶液脱色的最佳条件为:活性炭用量20%,脱色温度20℃,脱色时间6h,脱色率为78.7%。     

Evaluation of the antioxidant and antiproliferative activities of extracted saponins and flavonols from germinated black beans (Phaseolus vulgaris L.)

Flavonoids and saponins from common beans have been widely studied due to their bioactivity. This research evaluated the effect of germination of black beans (Phaseolus vulgaris L.) on the antioxidant capacity and antiproliferative activity against cancer cell lines of saponins and flavonoids extracted from seed coats, cotyledons and sprouts. Principal component analysis was performed to achieve punctual associations between the black bean saponins and flavonoids concentrations to the antioxidant capacity and the antiproliferative activities. Total phenolic content and antioxidant capacity of extracts were higher when obtained from seed coats, mainly from the 3rd germination day. The extracts obtained from seed coats after 3 and 5 germination days inhibited all cancer cell lines proliferation with no cytotoxicity against control cells. Genistein was related with the activity against mammary cancer cells but flavonols and group B saponins were more related with hepatic and colon cancers. Non-glycosilated flavonols were related with antioxidant capacity.