检索结果-南通市图书馆

INDIRECT　THERMO－OPTICAL　DETECTION　FOR　capillary　ELECTROPHORESIS　SEPARATION　OF　AMINO　ACIDS

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1994年第9期5卷 767-768页

作者： Ji Cun REN Bing Cheng LI Yan Zhuo DENG Jie Ke CHENG(Department of Chemistry. Department of Analysis and Testing Science Wuhan University. Wuhan. 130072)

In this letter, we first reported a novel method-indirect thermo-optical detection used in CE separation of native amino acids. By using methylene blue as background aborber,the detecion limit for lysine was 5×10(-5)... 详细信息

关键词： THERMO AMINO capillary DETECTION FOR INDIRECT OF OPTICAL SEPARATION ACIDS

EFFECTS OF DIGITAL ACUPRESSURE ON THE capillary ARTERIOLAR FLOW IN CEREBRAL PlA MATER OF THE DOG

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 1989年第2期9卷 135-139页

作者：韩凤岳王肇普董旭京 Institute of Orthopedics and Traumatology China Academy of Traditional Chinese MedicineBeijing

Effects of digital acupressure on the blood flowin the capillary arterioles of the cerebral pia matercovering the posterior sigmoidal gyrus in domesticdog(Canis familiaris)were *** speed ofblood flow was found increased to 185% after con-tinuous digital acupressure for 20 *** in-crease was most prominent 15 minutes after the acu-pressure was completed;the effect subsided in *** was also found that in cases of low basalspeed of flow before digital acupressure,the increasein the speed of blood flow after acupressure was morepronounced.

关键词： minutes gyrus completed capillary crease markedly frontal stimulation examining sensory

capillary Rise between Parallel Perforated Plates in Microgravity

在线全文

学校读者我要写书评

暂无评论

Journal of Physical Science and Application 2014年第5期4卷 277-290页

作者： Diana Gaulke Michael E. Dreyer Center of Applied Space Technology and Microgravity (ZARM) University Bremen Am Fallturm Bremen D-28359 Germany

This paper presents the setup and performance of a drop tower experiment which investigates the behavior of liquid during self-driven capillary transport between two parallel perforated plates under microgravity. With the onset ofmicrogravity the liquid rises between the two parallel plates as a result of capillary pressure. Eight different sets of plates are tested in this study and the free surface height and the volume of transported liquid is subsequently analyzed. The plate sets differ in geometric properties of their perforations, distance, and width. In each set the perforations of both plates are identical and have a diameter of a few millimeters. The capillary rise velocity is influenced by the perforation diameter and the area porosity of the plates. As could be expected, the capillary transport capability increases with decreasing plate porosity.

关键词： Wetting microgravity capillary liquid rise wicking pinning.

capillary refill time as a guide for operational decision-making process of autoimmune pancreatitis:Preliminary results

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2015年第7期7卷 110-115页

作者： Pinar Yazici Ismail Ozsan Unal Aydin Department of General Surgery Sisli Etfal Training and Research Hospital Department of General Surgery Izmir UniversityMedical Park Hospital

AIM: To investigate the efficacy of a novel intraoperative diagnostic technique for patients with preliminary diagnosis of autoimmune pancreatitis(AIP).METHODS: Patients with pancreatic surgery were reviewed to identify those who received a preliminary diagnosis of AIP between January 2010 and January 2014. The following data were collected prospectively for patients with a pathological diagnosis of AIP: clinical and demographic features, radiological and operative findings, treatment procedure, and intraoperative capillary refill time(CRT) in the pancreatic ***: Eight patients(six males, two females; mean age: 51.4 years) met the eligibility criteria of pathologically confirmed diagnosis. The most frequent presenting symptoms were epigastric pain and weight loss. The most commonly conducted preoperative imaging studies were computed tomography and endoscopic retrograde pancreaticodoudenography. The most common intraoperative macroscopic observations were mass formation in the pancreatic head and diffuse hypervascularization in the pancreatic bed. All patients showed decreased CRT(median value: 0.76 s, range: 0.58-1.35). One-half of the patients underwent surgical resection and the other half received medical treatment without any further surgical intervention. CONCLUSION: This preliminary study demonstrates a novel experience with measurement of CRT in the pancreatic bed during the intraoperative evaluation of patients with AIP.

关键词： Autoimmune pancreatitis Pancreatic mass Inflammation Hypervascularity capillary refill time

capillary Surface Energy Elucidation of the Cosmic Dark Energy—Ordinary Energy Duality

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Fluid Dynamics 2014年第1期4卷 15-17页

作者： Mohamed S. El Naschie Department of Physics Faculty of Science University of Alexandria Alexandria Egypt

This short letter reports on an unsuspected and quite surprising connection between capillary forces and dark energy. We start with a very brief introduction of the role played by relativistic hydrodynamics in cosmic dark energy research, and then proceed from there to outline the proposed analogy between dark energy and non-relativistic effects of capillary surface energy.

关键词： Dark Energy Cantorian Space-Time Relativistic Hydrodynamics capillary Surface Energy Quantum Physics Buckling of Elastic Shells Imperfection Sensitivity

capillary Wave’s Depth Decay

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2014年第16期6卷 1241-1243页

作者： Kern E. Kenyon North Lane Del Mar California USA

Depth decay rates for pressure and velocity variations of a propagating capillary wave are found to be significantly different from each other, and neither one is expected to have the classical exponential character. To obtain these results Bernoulli’s equation along streamlines in the steady reference frame is combined with the force balance on fluid particles in the cross-stream direction: a pressure gradient offsets the centrifugal force on particles moving along a curved path. The two starting equations for pressure and velocity are nonlinear, but two linear first order ordinary differential equations are produced from them, one for each variable, and they can be integrated immediately. A full solution awaits further information on the non-constant coefficient, the radius of curvature function for the streamlines, either from observations or another theory.

关键词： capillary Waves Depth Decay

Superhydrophobic graphene-decorated mesh gauze:recycling oils and organic solvents enhanced by large-diameter capillary action

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Materials 2016年第7期59卷 581-593页

作者：李雪姜婷婷汪晓蝶张自强李谊桂建舟刘瑞卿黄镇东冯晓苗汪联晖黄维马延文 Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials Jiangsu Natioal Synergistic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNajing 210023China School of Environmental and Chemical Engineering Tianjin Polytechnic UniversityTianjin 300387China Jiangsu Singapore Joint Research Center for Organic/Bio-Electronics&Information Displays and Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816China

A novel recyclable,superhydrophobic and superoleophilic graphene-based textile sorbent was prepared for the removal of oil spills and organic pollutants,by functionalizing cotton mesh gauze with reduced graphene oxide(RGO) using dip-coating and hydrothermal reduction *** RGO-gauze composite textile showed efficient water/oil separation,and the amount of oil absorbed by the sorbent could be up to 11 times of its own *** 50(±5)% absorbed oil could be recycled by mechanical squeezing and it was mainly extracted from the reserve of large-diameter capillary *** RGO-gauze maintained high structural stability and outstanding recyclability after eight cycles of oil *** RGO-gauze consumes a small quantity of graphene(0.6 g m^(-2)) and can be produced in large scale,very suitable for application in the cleanup of oil spill and organic solvent effluent.

关键词： superhydrophobic graphene mesh gauze capillary action oil removal

Determination of Tramadol in Human Serum by capillary Electrophoresis with the End-Column Electrochemiluminescence Detection

在线全文

学校读者我要写书评

暂无评论

Open Journal of Biophysics 2013年第2期3卷 121-127页

作者： Caiyun Zhang Tao Liu Xiaoli Zhang Erbao Liu The School of Chemistry and Materials Science Shanxi Normal University Linfen China

A capillary electrophoresis (CE) coupled with end-column electrochemiluminescence (ECL) detection method for the analysis of tramadol (TMD) has been investigated. ECL detection was working electrode biased at 1.2 V in a 20mmol·L-1 sodium phosphate buffer (pH = 8.0) containing 5 mmol·L-1 Ru (where bpy = 2,2’-bipyridyl). Linear correlation (r ≥ 0.997) between ECL intensity and drug concentration was obtained in the range 3 × 10-4 - 6 × 10-6 mol·L-1. The limits of detection (LODs) for tramadol in water was 3.012 × 10-8 mol·L-1(S/N = 3). The relative standard deviation values on peak size (10-5 mol·L-1 level) and migration time for the tramadol were 4.58% and 1.39% (n = 10), respectively. Applicability of the CE-ECL method to the analysis of human serum spiked with tramadol was

关键词： capillary Electrophoresis Electrochemiluminescence Tramadol Hydrochloride Human Serum

Quick Single Run capillary Zone Electrophoresis Determination of Active Ingredients and Preservatives in Pharmaceutical Products

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Analytical Chemistry 2013年第3期4卷 117-124页

作者： Marina Franco Renata Jasionowska Department of Chemistry Sapienza University Rome Italy

The paper deals with the development of a rapid and efficient capillary Zone Electrophoresis (CZE) method for Quality Control analysis of pharmaceutical preparations containing antihistamines, decongestants, anticholinergic remedies and preservatives. Active ingredients of interest are: ChlorPheniramine Maleate (CPM), DiPhenhydramine Hydrochloride (DPH), Ephedrine hydrochloride (E), Isopropamide Iodide (II), Pheniramine Maleate (PM), Lidocaine hydrochloride (L), Tetracaine hydrochloride (T), Clopamide Hydrochloride (CH), DiHydroErgochristine (DHE), PhenylEphrine hydrochloride (PE) and Acetaminophen (A). Preservatives studied are: MethylParaben (MeP), EthylParaben (EtP), PropylParaben (PrP), ButylParaben (BuP), p-HydroxyBenzoic Acid (p-HBA). All these analytes were separated in a single run using 60 mM tetraborate buffer solution (TBS) pH = 9.2 as a BackGround Electrolyte (BGE) by using an uncoated fused silica capillary of I.D. = 50 mm and applying a voltage of 25 kV in the first part of the electropheretic run (up to 5.8 min) and 30 kV for the remaining time. The hydrodynamic pressurization of the inlet vial was 20 psi at 7.2 min. up to the end of analysis. Total separation time was of 7.5 min. The method was then successfully validated and applied to the simultaneous determination of active ingredients and preservatives. Good repeatability, linearity, and sensitivity were demonstrated. Precision of migration time (tm) was RSD% < 0.53% and of corrected peak area (Ac) was RSD% < 6.15%. The linearity evaluation gave 0.9928 2 1.000. LOD and LOQ, accuracy (recovery) and ruggedness were evaluated for each analyte demonstrating the good reliability of the method. Analyses of some pharmaceutical real samples were performed.

关键词： capillary Zone Electrophoresis Nitrogenous Compound Parabens Pharmaceutical Analysis Quality Control Validation