梯形导向浮阀塔板的流体力学和传质性能的研究

应用空气－水系统，在１６００ｍｍ×４００ｍｍ的矩形塔内，对梯形导向浮阀塔板的流体力学进行了实验研究，测定了阀孔临界气速，塔板压降，雾沫夹带和泄漏。应用空气－水－ＣＯ２系统，测定了梯形导向浮阀塔板的效率。实验结果表明，梯形导向浮阀塔板具有良好的流体力学和传质性能。     

组合式角钢塔板的性能研究

在５００ｍｍ×３００ｍｍ的矩形有机玻璃实验塔中，用水－空气体系对组合式角钢塔板的流体力学性能及传质性能进行实验研究，并以筛孔塔板作对比实验。结果表明组合式角钢塔板是一种结构简单，压降低，压降低，操作弹性宽，处理能力大和板效率较高的新型塔板。     

穿流塔板上两相竞争性流动特性

对一种穿流式固阀塔板进行了流体力学冷态实验考察。采用常温、常压下的空气和水作为实验介质,测试了不同操作条件下塔板的干板压降、全板压降和清液层高度,比较了不同的塔板结构参数对流体力学性能参数的影响。实验结果表明,塔板压降和清液层高度均随着孔中心距和开孔率的减小而增大,而随着孔径的增大而增大。气液两相在穿流塔板上为逆流流动,且随着气液流量的变化呈现出4种不同的流动形态。建立了清液层高度的经验式,且计算值与实验测量值吻合良好。推导了描述穿流塔板独特的流动形态的参数即气体流通分率的数学表达式,计算结果表明,该分率随着孔中心距的减小而减小,并随着孔径和开孔率的增大而减小。     

十字旋阀塔板的流体力学性能

在1 000 mm的圆塔内,采用空气-水系统对十字旋阀塔板的流体力学性能进行了测试,考察了液流强度、出口堰高、开孔率等因素对塔板压降、雾沫夹带及泄漏性能的影响。结果表明:在小液流强度下,十字旋阀塔板上气体分散均匀,泡沫层高度稳定,气液接触充分,具有较好的流体力学性能和优势。     

大孔径筛板复合塔板的流体力学研究

对高开孔率、大孔径筛板复合塔板在喷射状态下的流体力学性能进行了测定及关联,提供了必要的流体力学参数。结果表明,该塔板具有阻力低、雾沫夹带量小、操作上限速度大等特点,特别适合那些要求气相负荷大、液相负荷低的过程。     

谈有关HPLC柱效的问题

目的：分析影响HPLC柱效的若干主要因素，方法：列举典型例子分析说明实测时导致柱效变化之因素，结果：证明柱类型，柱填充、PH值，缓冲液种类及浓度，温度，流动相等因素对柱效的影响，结论：柱类型，柱填充即内在塔板数是柱效的内在先决因素，分析条件与方法即方法塔板数是柱效的外在影响因素，应尽可能使方法塔板数接近内塔板数。     

制药生产过程中含醋酸丁酯废水的蒸馏回收

介绍一种大通量高效塔板－－立体传质塔板（CTST），该塔板先后在华北制药集团、河北石家庄制药集团、山东鲁抗医药股份有限公司等十余家企业生产中的废醋酸四酯回收过程中成功应用，能耗降低40％、溶媒收率提高15％以上。     

蒸馏塔内液体混合对汽体混合的影响

提出了塔板上液体混合对板间汽体混合影响的概念,并获得了相应的关联式。经塔板效率的计算结果比较,本文关系式的计算值与Diener的数据相当吻合,而与不考虑液体混合对汽体混合影响的相比,误差明显减小。     

双溢流塔板液体流动状态的研究

在φ２．８ｍ大型冷模塔板上,研究了双溢流扩张流和收缩流两种情况下塔板液体流动状况。考察了液流强度,堰径比,外堰高,降液管下口高等对板面液体流动的影响。实验表明,扩张流塔板存在严重回流和滞流现象,收缩流塔板面液体停留时间有明显差异。     

浮阀塔板的设计及流体力学计算探讨

详细地介绍了计算浮阀塔板的各项工艺参数，并对不同的公式进行了比较，推荐了比较合适的计算方法。在计算塔径以及雾沫夹带方面以Fair的方法为主。在计算浮阀塔板的干板压降方面以Klein的方法为主。对浮阀塔板的浮阀配置也作了简单的介绍，供设计者参考。     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…