生命科学仪器之我见

本届展览会参展的有关生命科学方面的仪器仪表不够丰富,但比上一届多了许多。大致有DNA合成仪、DNA序列仪、基因扩增仪、从低速到超高速的系列化离心机、伽玛计数器、液体闪烁计数器、各种电泳系统、真空冷冻干燥系统、激光光密度扫描仪、临床使用的细菌微生物鉴定仪及二氧化碳培养箱等。以生物化学和个别的临床分析检验仪     

某游泳馆焊接空心球网架腐蚀评价及原因探讨

对已使用20年的某游泳馆焊接空心球网架腐蚀情况进行了检测，得到了相应杆件的平均腐蚀厚度和防腐涂层的损坏情况，分析了防腐涂层的损坏原因及后加防腐涂层的应用效果，指出了相应杆件腐蚀速度的影响因素，强调了防腐涂层的合理选用和其规范施工的重要性。     

女儿啊我的抗癌食谱为何仍留不住你的生命

化疗是癌症患者必须的治疗,然而,那严重的毒副作用却常使家属感到心痛与不安。因此,当病人首次经化疗后病情得到缓解,其亲人往往会做出不遵医嘱定期化疗的错误决定。此举看似一片拳拳爱心,但客观上却是亲情杀手。同时,也给自己的身心留下了终生的痛悔。     

Mass and heat transfer enhancement of chemical heat pumps

An inert additive, expanded graphite (EG), has been prepared and used to enhance the heat and mass transfer process of chemical heat pumps. The effects of mixing ratio and mixing method on the chemical reaction time are investigated.     

浅谈酒精高温发酵霉变原料对成品质量的影响及处理

酒精发酵是一个由发酵性糖生成乙醇的极其复杂的生化过程。发酵温度高低,原料质量好坏、酵母菌种性能和工艺卫生等诸多因素都影响这一生化过程,使一部份可发酵性的糖不能生成酒精,却生成一些高级醇、酸类、醛类等。这些产物在酒精蒸馏过程中有的和酒精共沸蒸发,有的拖带混入到酒精中,还原性的杂质使氧化性不合格,严重影响酒精质量。我厂在生产中采用高温发酵工艺,使用霉变原料出现异常发酵产生丙烯醇和丙烯醛,使氧化性时间很短,短到仅有几秒钟,酒精质量不合格影响酒精产量,影响工厂效益。为此对酒精高温发酵使用霉变原料时,对成品质量的影响及解决办法做一浅议。     

浅谈木薯干原料生产酒精杂醇油的生成及提取

木蕃干淀粉含量高,用做酒精原料出酒率高,是制造酒精的好原料,但木蕃干生产酒精杂质含量较高。木蕃干含蛋白质少,发酵过程中产生很多杂醇油,这些杂醇油在精馏塔内不易提出,塔内杂醇油含量高,影响生产操作,影响酒精质量。本文仅就木蕃干原料生产酒精杂醇油的生成及提取提出几点认识: 一对木薯干原料生产酒精产生杂醇油的认识杂醇油是在酒精发酵过程中和酒精、二氧化碳同时生成的。杂醇油的生成与原料品种、生产用菌种、生产工艺等诸多因素有关,原料在诸多因素中是主要因素之一。首先     

Stepwise colloidal lithography toward scalable and various planar chiral metamaterials

Chiral metamaterials(CMs) composed by artificial chiral resonators have attracted great attentions in the recent decades due to their strong chiroptical resonance and identifiable interaction with chiral materials,facilitating practical applications in chiral biosensing,chiral emission,and display technology.However,the complex geometry of CMs improves the fabrication difficulty and hinders their scalable fabrication for practical applications,especially in the visible and ultraviolet wavelength...     

Optimal dispatch of multi energy system using power-to-gas technology considering flexible load on user side

The relation between power-to-gas technology (P2G) and energy interconnection becomes increasingly close. Meanwhile, the participation of flexible load on user side in system optimization has attracted much attention as an efficient approach to relieve the contradiction between energy supply and energy demand. Based on the concept of energy hub, according to its series characteristic, this paper established a generic multi-energy system model using the P2G technology. The characteristic of flexible load on user side was considered and optimal dispatch analysis was made, so as to reduce the cost, to reasonably dispatch the flexible load, to reduce the discharge, to enhance the new energy output, and to increase the power-to-gas conversion efficiency. Finally, a concrete analysis was made on the optimal dispatch result of the multi-energy system using the P2G technology considering flexible load on user side in the calculating example, and optimal dispatch of the system was verified via four different scenarios. The results indicate that cooperative dispatch of multi-energy system using the P2G technology considering flexible load on user side is the most economic, and can make a contribution to absorption of new energy and P2G conversion. In this way, environmental effects and safe and stable operation of the system can be guaranteed.     

初诊2型糖尿病患者循环miRNA-101的表达变化及临床意义

目的:测定初诊2型糖尿病（type 2 diabetes mellitus,T2DM）患者血清miRNA-101的表达水平,分析其变化的临床意义。方法: 采用qRT-PCR法检测30例初诊T2DM患者及正常受试者血清中miRNA-101表达水平,并测定相关临床指标。两因素间关系采用Pearson相关分析。评估miRNA-101和其他参数的关联应用多元逐步回归分析。结果: 初诊T2DM患者血清中miRNA-101表达水平显著高于正常对照组（P<0.05）。血清miRNA-101表达水平与空腹血糖（fasting plasma glucose,FPG）和糖化血红蛋白A1c（glycosylated hemoglobin A1c,HbA1c）呈正相关（P<0.05）。在校正性别、年龄、体质量后,多元逐步回归分析表明miRNA-101水平与HbA1c呈显著正相关（P<0.05）。结论:初诊T2DM患者血清miRNA-101表达水平增高,可能与HbA1c升高有关。     

低温蒸煮在酒精生产中的经济效益

低温蒸煮在酒精生产中的经济效益@孔祥玖@马书鹏@王蓬际...