摘要：Wounds heal through a complex process including four *** interruption or interference in healing process can prevent wound *** is one of the most common complications preventing wounds from *** this study,we investigated the fibroblast cell morphology and behavior of a gelatin-based hydrogel containing anthocyanin to determine whether it can be used for early detection of *** experimental results ascertained that 6 h after culturing the fibroblasts,they could be well attached to the surface of the hydrogel,and 48 h after seeding,they were spread over the surface and connected with each *** the addition of a low dose of anthocyanin,the vitality of the cell increased,and the results of the ATR-FTIR analysis showed that anthocyanin could eliminate remaining glutaraldehyde free *** also could change its color after the addition of bacterial ***,hydrogels containing black carrot anthocyanin may be a potential therapeutic and diagnostic strategy to promote wound healing and early detection of infection.

摘要：以Anammox-DAMO为研究对象,通过批次试验探究了不同ph(5.5、6.5、7.0、7.5、8.5)条件下系统的脱氮性能和N_(2)O的产消.结果表明:NH4+降解速率在ph为7.0时达到最大值,NO_(3)-降解速率在ph为6.5~7.5时达到最大值;相关性分析表明,N_(2)O峰值浓度与NO_(3)-降解速率呈负相关关系(r=-0.994,p=0.001<0.01),在ph 6.5~7.5时,N_(2)O峰值浓度最小,且N_(2)O在此ph范围下最快达到峰值.选用酶促反应动力学模型对该过程进行拟合,拟合结果能较好体现N_(2)O变化趋势,在ph为6.5~7.5时,N_(2)O还原酶的最大比合成/活化速率(V_(max))达到最大,相反,酶诱导的半饱和常数(KE,i)在此ph范围下达到最小.在不同ph下,NO_(3)-和NH4+还原酶的最大比合成/活化速率(V_(max,1))与N_(2)O还原酶的最大比合成/活化速率(V_(max),2)的比值大于1.00,说明氧化亚氮还原酶的合成具有滞后性.

摘要：Modification of classic fluorophore to possess the emission transitions between aggregation-induced emission(AIE)and intrinsic emission offers reliable approach to the design of ratiometric fluorescent *** this study,a proton acceptor benzimidazole was integrated with BODIPY to form three compounds,BBI-1/2/3,which demonstrated the AIE(~595 nm,I_(agg))in neutral aqueous medium and intrinsic BODIPYemission(~510 nm,I_(int))in acidic *** the three showed the ratiometric ph sensing behavior in a dual excitation/dual emission mode,yet BBI-3 displayed still the dual emission ratiometric ph sensing *** ph-dependent emission ratio I_(int)/I_(agg)of the three were fully reversible,and no interference was observed from normal abundant chemical species in live *** different p K_a(BBI-1,p K_a4.4;BBI-2,p K_a2.7;BBI-3,p K_a3.6)suggested that the substituents on benzimidazole moiety were essential to govern their functioning ph *** ratiometric imaging of BBI-1 in A549 cells provided an effective intracellular ph(ph_i)calibration formula corresponding to emission ratio of I_(int)/I_(agg).Ratiometric ph_iimaging in A549 cells upon small particle exposure confirmed the particle-induced cellular acidification with this *** particle size and the chemical nature of the particle contribute to the observed acidification *** synchronization of lysosome disruption to cellular acidification in A549 cells upon crystalline silica exposure was directly observed for the first time with BBI-1,showing the potential application of BBI-1 in the study of silicosis and other related *** study demonstrated that endowing fluorophore with AIE/intrinsic emission transition could be a promising strategy for ratiometric sensor design.

摘要：基于自行设计搭建杂散电流腐蚀实验装置,结合电化学测试和失重实验对交流杂散电流和阴极保护作用下的管线钢腐蚀行为开展研究。结果表明:随着交流电流密度的增大,管线钢腐蚀电位负向偏移,增加了金属腐蚀的倾向性。交流干扰促进了交流电正半周期内的阳极氧化反应,管线钢腐蚀速率增大。交流频率的增加缩短了交流电正半周期管线钢发生腐蚀的时间,减小了促进金属氧化反应的法拉第电流,管线钢腐蚀速率减小。而在强酸和强碱环境下,管线钢的腐蚀速率均增强。

摘要：以"酶的特性"的教学为例,介绍发展学生科学思维、科学探究的教学模式.通过学生课前自主设计实验、课堂完善实验方案、分组开展实验、深度讨论问题、联系实际应用拓展的环节,培养学生自主设计、独立思考的品质.

摘要：蒸汽发生器(SG)中传热管作为一、二回路的分界面,对于机组长期安全稳定运行起着至关重要的作用。为更好地评估SG长期运行的结构完整性,需要结合大修停堆有针对性地进行SG杂质隐藏盐返回试验,对SG二次侧局部隐藏盐返回状况进行评估。AP1000电站蒸汽发生器在设计上与其他二代核电存在不同,导致SG隐藏盐返回试验评估方法与其他传统电厂存在差异。本文通过结合AP1000 SG设计特点,开发出一套针对AP1000特有SG隐藏盐返出的试验方法和评估流程,并在三门核电1、2号机组大修期间进行运用,为二回路水质优化、SG持续处于最优水化学环境提供保障,对于后续新机组设计、调试、启动及正常运行期间的水化学控制具有一定借鉴作用。

摘要：目的以生品半夏Pinellia ternata毒性大小为标准,寻找标示半夏炮制品相对毒性大小的方法及相对毒性大小与指标成分间的关系。方法按照《中国药典》2020年版一部方法对半夏生品进行质量检查;将影响半夏炮制品毒性的4个因素(白矾用量、生姜用量、蒸煮时间、蒸煮温度)进行混合均匀设计,建立正棱锥降维模型;将上述4个因素降维成用以表征半夏炮制品相对毒性大小的单一因素S_(面),建立其与4个因素之间的回归方程;将得到的S_(面)与德尔菲评价法得出的相对毒性大小表征值进行相关性分析;采用薄层扫描仪、MATLAB软件测量物性分析指标色度(H、S、I),ph测量仪测定ph值,HPLC法测量半夏有机酸,将测得的以上指标成分与S_(面)进行回归分析。结果S_(面)与4个影响因素间的回归模型为S_(面)=1-0.0119 X_(白矾)-0.0058 X_(生姜)-0.0006 X_(时间)-0.0043 X_(温度),r^(2)=0.9838,P<0.001;模型得到的S_(面)与德尔菲评价法得到表征值均有显著相关性,r=0.9852,P<0.001;S_(面)与ph、H、S、I间的逐步回归模型为S_(面)=0.165 X_(ph)+2.393 X_(H)-0.533 X_(S)+0.372 X_(I)-0.631,r^(2)=0.9988,P<0.001。S_(面)与ph值、有机酸间的逐步回归模型为S_(面)=0.185 X_(ph)+0.163 X_(L-苹果酸)+0.186 X_(草酸)-0.508,r^(2)=0.9955,P<0.001。结论毒性标示模型具有效性,能够模拟出毒性影响因素与毒性大小间的量化关系,同时也能模拟出物性参数、化学指标与毒性大小的量化关系,对半夏炮制品的炮制方法的确定提供数据支持,为研究确定半夏炮制品毒性大小提供新思路。

摘要：由MAS建筑工作室设计的ph7800住宅位于土耳其伊兹密尔,是一位艺术收藏家与家人共同生活的家庭空间。建筑共有2层,内部设有一系列开放式的空间,以及中央庭院和户外露台。设计师试图模糊建筑内外的界限,放大外部空间的存在感,打造一个阳光满庭、舒适宜人的宜居宅院。住宅的北侧是伊利卡海滩(Ilica Beach)壮丽的海景,南侧是葱郁的山景,随着季节的更迭,住宅周围的景观和氛围也在不断变化,如画一般的景色令人如痴如醉。

摘要：根据课程标准,结合教学内容设计了两个教具"酶与底物的反应器",优化"探究影响过氧化氢酶活性的条件"实验中的材料、试剂等,并通过预实验和正式实验相结合的方式,发现红薯块中过氧化氢酶在ph7.4和温度为50℃时活性最高.通过师生合作设计实验,发展了学生的科学探究能力,培养了科学思维.

摘要：对纯碱软化-汽提脱氨法预处理SE水煤浆气化废水的工业化运行效果进行分析。结果表明,在控制废水流量为160 m^(3)/h,废水ph为10.5~11,沉降槽依次投加NaOH、Na_(2)CO_(3)、聚合氯化铝(PAC)和聚丙烯酰胺(PAM),汽提塔维持蒸汽流量为7.5~8.5 t/h、压力为0.14~0.16 MPa、塔釜温度不大于125℃的条件下,出水硬度可降至174 mg/L、氨氮质量浓度降至17 mg/L,各项污染物指标优于设计值。