Achievements in the Life Sciences最新文献_第3页

A Study on the Coffee Spilling Phenomena in the Low Impulse Regime 低冲量区咖啡溢出现象的研究

Achievements in the Life Sciences Pub Date : 2016-06-01 DOI: 10.1016/j.als.2016.05.009

Jiwon Han

{"title":"A Study on the Coffee Spilling Phenomena in the Low Impulse Regime","authors":"Jiwon Han","doi":"10.1016/j.als.2016.05.009","DOIUrl":"10.1016/j.als.2016.05.009","url":null,"abstract":"<div><p>When a half-full Bordeaux glass is oscillated sideways at 4Hz, calm waves of wine gently ripple upon the surface. However, when a cylindrical mug is subject to the same motion, it does not take long for the liquid to splash aggressively against the cup and ultimately spill. This is a manifestation of the same principles that also make us spill coffee when we walk. In this study, we first investigate the physical properties of the fluid-structure interaction of the coffee cup; in particular, the frequency spectrum of each oscillating component is examined methodically. It is revealed that the cup's oscillation is not monochromatic: harmonic modes exist, and their proportions are significant. As a result, although the base frequency of the cup is considerably displaced from the resonance region, maximum spillage is initiated by the second harmonic mode of driving force that the cup exerts on its contents. Thus, we spill coffee. As an application of these experimental findings, a number of methods to reduce liquid spillage are investigated. Most notably, an alternative method to hold the cup is suggested; in essence, by altering the mechanical structure of the cup-holding posture, we can effectively suppress the higher frequency components of the driving force and thus stabilize the liquid oscillation. In an attempt to rationalize all we have investigated above, a mechanical model is proposed. Due to practicalities, rather than to construct a dynamical system using Newton's equation of motion, we choose to utilize the Euler-Lagrangian equations. Extensive simulation studies reveal that our model, crude in its form, successfully embodies the essential facets of reality. This liberates us to make two predictions that were beyond our experimental limits: the change in magnitude of the driving force and the temporal stabilization process.</p></div>","PeriodicalId":100012,"journal":{"name":"Achievements in the Life Sciences","volume":"10 1","pages":"Pages 87-101"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.als.2016.05.009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81718507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Quantitative Ethnobotanical Survey of Traditional Siddha Medical Practitioners from Thiruvarur District with Hepatoprotective Potentials through In Silico Methods 用计算机方法对Thiruvarur地区具有保肝潜能的传统悉达医生进行定量民族植物学调查

Achievements in the Life Sciences Pub Date : 2016-06-01 DOI: 10.1016/j.als.2016.03.001

S. Vijayakumar, J.P. Harikrishnan, S. Prabhu, J.E. Morvin Yabesh, P. Manogar

{"title":"Quantitative Ethnobotanical Survey of Traditional Siddha Medical Practitioners from Thiruvarur District with Hepatoprotective Potentials through In Silico Methods","authors":"S. Vijayakumar, J.P. Harikrishnan, S. Prabhu, J.E. Morvin Yabesh, P. Manogar","doi":"10.1016/j.als.2016.03.001","DOIUrl":"10.1016/j.als.2016.03.001","url":null,"abstract":"<div><p>The aim of the present study was to document the knowledge of traditional <em>Siddha</em> medical practitioners from Thiruvarur district in Tamil Nadu, India, and to quantitatively analyze the data to identify some useful leads of medicinal plants and to screening the phytocomounds. Field study was carried out for a period of 1year in Thiruvarur district of Tamil Nadu. The ethnomedicinal information were collected from <em>Siddha</em> medical practitioners. The collected data were analyzed through quantitative analysis. The molecular docking studies were performed three marketed drugs and eleven different medicinal plant compounds against HBeAg using Schrodinger suite. A total of 33 species of plants distributed in 22 genera belonging to 22 families were identified as commonly used ethno medicinal plants by traditional <em>Siddha</em> practitioners in Thiruvarur. An interesting point in molecular docking study is that luteolin is an effective inhibitor for the inhibition of HBV when compared to commercial drugs. Traditional <em>Siddha</em> medical practitioner and remarkable medicinal plant knowledge and uses were documented for the study area.</p></div>","PeriodicalId":100012,"journal":{"name":"Achievements in the Life Sciences","volume":"10 1","pages":"Pages 11-26"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.als.2016.03.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90483250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

X-ray Features of Polyelectrolyte Carrageenan–Chitosan Complexes Obtained by Different Methods 不同方法制备的聚电解质卡拉胶-壳聚糖配合物的x射线特征

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.056

Alexandra V. Volod'ko , Valentina A. Petrova , Yulia G. Baklagina , Dmitry P. Romanov , Yury A. Skorik , Irina M. Yermak

引用次数: 0

Structure and physiological activity of pectic polysaccharides of the top of the Mongolian onion Allium mongolicum 蒙古葱(Allium mongolicum)顶部果胶多糖的结构与生理活性

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.034

Olga A. Patova , Victoria V. Golovchenko , Nataliya Ya. Mikhaleva , Naranmandakh Shinen , Dagiisuren , Ganbaatar Jamsranjav , Alexander S. Shashkov

引用次数: 0

Glycopolymers of the Cell Walls of Actinobacteria 放线菌细胞壁的糖共聚物

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.039

Natalia V. Potekhina , Galina M. Streshinskaya , Elena M. Tul'skaya , Alexander S. Shashkov , Ludmila I. Evtushenko

引用次数: 0

Immune Response to Glycan Antigens in Pregnancy: Immunosuppression or Immunoregulation? 妊娠期对多糖抗原的免疫反应:免疫抑制还是免疫调节?

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.060

Marina M. Ziganshina , Nadezhda V. Shilova , Nailya R. Khasbiullina , Alexander S. Rakitko , Natalya E. Kan , Victor L. Tyutyunnik , Nikolai V. Bovin , Gennady T. Sukhikh

引用次数: 0

Glycovectors for Specific Targeting of Nanoparticles in the Diagnosis and Therapy 糖载体在纳米颗粒特异性靶向诊断和治疗中的应用

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.002

Vladimir I. Apanasevich , Valentin A. Avramenko , Pavel A. Lukyanov

引用次数: 0

Structures of the O-specific Polysaccharides of the Bacteria Yersinia frederiksenii Н56-36/81 (Serotype O:60) and Yersinia entomophaga MH96 费氏耶尔森菌Н56-36/81(血清型O:60)和食虫耶尔森菌MH96的0特异性多糖结构

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.047

Olga V. Sizova , Anna N. Kondakova , Alexander S. Shashkov , Yuriy A. Knirel , Rima Z. Shaikhutdinova , Sergei A. Ivanov , Svetlana V. Dentovskaya

引用次数: 0

Lipopolysaccharides from Marine Bacteria of Genus Pseudomonas: Structure and Biological Activity 假单胞菌属海洋细菌的脂多糖:结构和生物活性

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.021

Nadezhda A. Komandrova, Maxim S. Kokoulin, Svetlana V. Tomshich, Ekaterina V. Sokolova, Anatoly I. Kalinovsky, Yuriy N. El’kin, Lyudmila A. Romanenko

引用次数: 0

Formation of Polyelectrolyte Complexes Between Ionic Polysaccharides and Gelatin in Aqueous Medium 离子多糖与明胶在水介质中聚电解质配合物的形成

Achievements in the Life Sciences Pub Date : 2016-01-01 DOI: 10.1016/j.als.2016.12.009

Svetlana R. Derkach, Nikolai G. Voron'ko, Nina I. Sololan

引用次数: 0