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| 1 | A study on the mixing proportion in groundwater samples by using Piper diagram and Phreeqc model显示文摘Piper (1944) diagram has been the basis for several important interpretations of the hydrogeochemical data. As seen in this diagram, most natural waters contain relatively few dissolved constituents, with cations (metals or bases) and anions (acid radicles) in chemical equilibrium with one another. Apart from the facies representation, the composition of the mixed sample can be identified in terms of the composition of the parental solution. To bring out this advantage of the Piper diagram, a study was conducted in the Kalpakkam region of Tamilnadu, South India. By taking the geology and water table into consideration, two sample locations were selected as parent solution and third one as the mixture sample. All three samples were analyzed for calcium (Ca), magnesium (Mg), sodium (Na), potassium (K), chloride (Cl), sulphate (SO4) and phosphate (PO4) by Ion Chromatograph (Metrohm IC 861). HCO3 was determined by volumetric titration. The Piper diagram shows that parent solutions clustered towards Na-Mg-Ca-HCO3-Cl and Na-HCO3 facies, and the mixing sample belongs to Na-Mg-HCO3 facies. Phreeqc interac-tive (Ver 2.8) along with the original composition of the mixture sample was used to correlate the mixing proportion identified by the Piper diagram. | Karmegam U. Chidambaram S. Prasanna M.V. Sasidhar P. Manikandan S. Johnsonbabu G. Dheivanayaki V. Paramaguru P. Manivannan R. Srinivasamoorthy K. Anandhan P | 2011 | Chinese Journal Of Geochemistry2011，30，4： | 20 |
| 2 | Novel degradation products of argatroban: Isolation, synthesis and extensive characterization using NMR and LC-PDA-MS/Q-TOF显示文摘Forced degradation study of argatroban under conditions of hydrolysis(neutral, acidic and alkaline), oxidation,photolysis and thermal stress, as suggested in the ICH Q1 A(R2), was accomplished. The drug showed significant degradation under hydrolysis(acidic, alkaline) and oxidation(peroxide stress) conditions. The drug remained stable under thermal and photolytic stress conditions. In total, seven novel degradation products(DP-1 to DP-7) were found under diverse conditions, which were not reported earlier. The chemical structures of these degradation products were characterized by ~1H NMR,^(13)C NMR, 2 D NMR, Q-TOF-MSnand IR spectral analysis and the proposed degradation products structures were further confirmed by the individual synthesis. | Vinodh Guvvala Venkatesan Chidambaram Subramanian Jaya Shree Anireddy Mahesh Konda | 2018 | Journal of Pharmaceutical Analysis2018，8，2： | 4 |
| 3 | Effect of heat treatment conditions on the passivation behavior of WE43CMg-Y-Nd alloy in chloride containing alkaline environments显示文摘Mg–Y–Nd alloy(WE43C or Elektron 43)is a heat treatable magnesium wrought alloy that can be used up to 250 ℃ for aerospace application.This alloy has excellent mechanical properties(UTS:up to 345 MPa at room temperature)and improved corrosion resistance.Electrochemical passivation studies were conducted on this alloy under different heat treatment conditions in 0.1 M NaOH solution with the addition of chloride from 0 to 1000 ppm.The passive potential range typically extended to more than 1.5 VAg/AgCl.The transpassive potential was not dependent on the heat treatment condition of the alloy when the chloride concentration increased up to 500 ppm.However,pitting protection potential varied with the heat treatment condition when the chloride addition was 500 ppm or more.The specimen surface was analyzed using scanning electron microscopy(SEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and Raman spectroscopy to understand the passivation behavior of this alloy.The passivated surface of the WE43C specimens indicated that the surface layer consisted of MgO,Mg(OH)_(2),and rare earth oxide phases,and the heat treatment conditions did not significantly affect the composition of the surface film. | Jakraphan Ninlachart Zachary Karmiol Dev Chidambaram Krishnan SRaja | 2017 | Journal of Magnesium and Alloys2017，5，2： | 3 |
| 4 | Indeterminate liver lesions on gadoxetic acid-enhanced magnetic resonance imaging of the liver:Case-based radiologic-pathologic review显示文摘Different histopathological manifestations of focal liver lesions show varying common and uncommon imaging findings and some pathologies may show similar appearance despite of different histopathology.It is necessary to characterise focal liver lesions accurately as not only benign and malignant lesions are managed differently,but also certain benign lesions have differing management.These lesions are increasingly being detected due to rapid growth of use of crosssectional imaging as well as improvement in image quality and new imaging techniques.Contrast enhanced magnetic resonance imaging(MRI)is considered the gold standard technique in characterising focal liver lesions.Addition of gadoxetic acid has been shown to significantly increase diagnostic accuracy in the detection and characterization of liver abnormalities.Classic imaging characteristics of common liver lesions,including their behaviour on gadoxetic acid enhanced MRI,have been described in literature over recent years.It is important to be familiar with the typical aspects of these lesions as well as know the uncommon and overlapping imaging features to reach an accurate diagnosis.In this article,we will review the well-described characteristic imaging findings of common and rare focal liver lesions and present several challenging cases encountered in the clinical setting,namely hepatocellular adenoma,focal nodular hyperplasia,hepatic angiomyolipoma,hepatocellular carcinoma,intrahepatic cholangiocarcinoma,neuroendocrine tumours as well as a pleomorphic liposarcoma of the liver. | Jurate Noreikaite Dekan Albasha Vijay Chidambaram Ankur Arora Ashok Katti | 2021 | World Journal of Hepatology2021，13，9： | 3 |
| 5 | In vitro evaluation of free radical scavenging activity of Codariocalyx motorius root extract显示文摘Objective:To determine the phenolic content in Codariocalyx motorius root extract and to evaluate its antioxidant properties using various in vitro assay systems.Methods:The antioxidant activity was evaluated based on scavenging of 1,1—diphenyl—2—picrylhydrazyl,hydroxyl radicals,superoxide anions,nitric oxide,hydrogen peroxide,peroxvnilrile,reducing power and by inhibition oi lipid peroxidation which was estimated in terms of thiohurhituric acid reactive substances.Results:The root extract of the Codariocalyx motorius(C.motorius) exhibited potent total antioxidant activity that increased with increasing amount of extract concentration,which was compared with standard drug such as quercetin.butylaled hvdroxvloluene.tocopherol at different concentrations.The different concentrations of the extracts showed inhibition on lipid peroxidation.In addition,the extracts had effective reducing power,free radical scavenging, super oxide anion scavenging,nitric oxide scavenging,lipid peroxidation,and total phenolic content depending on concentration.High correlation between total phenolic contents and scavenging potential of different reactive oxygen species(r^2=0.83 1 -0.978) indicated the polyphenols as the main antioxidants.Conclusions:Codariocalyx motorius(C.motorius) root possess the highly active antioxidant substance which can be used for the treatment of oxidative stress-related diseases. | Uma Chidambaram Vanitha Pachamuthu Suganya Natarajan Bhakkiyalakshmi Elango Suriyanarayanan Kunga Mohan Ramkumar | 2013 | Asian Pacific Journal of Tropical Medicine2013，6，3： | 2 |
| 6 | Acaricidal activity of synthesized titanium dioxide nanoparticles using Calotropis gigantea against Rhipicephalus microplus and Haemaphysalis bispinosa显示文摘Objective:To assess the acaricidal activity of titanium dioxide nanoparticles(TiO_2 NPs)synthesized from flower aqueous extract of Calotropis gigantea(C.gigantea)against the larvae of Rhipicephalus(Boophilus)microplus[R.(B.)microplus]and the adult of Haemaphrysalis bispinosa(H.bispinosa).Methods:The lyophilized C.gigantea flower aqueous extract of 50 mg was added with 100 mL of TiO(OH_2)(10 mM)and magnetically stirred for 6 h.Synthesized TiO_2 NPs were characterized by X-ray diffraction(XRD).Fourier transform infrared spectroscopy(FTIR),Scanning electron microscopy(SEM),and Energy dispersive X-ray spectroscopy(EDX).The synthesised TiO_2 NPs were tested against the larvae of R(B.)microplus and adult of H.bispinosa were exposed to filter paper impregnated method.Results:XRD confirmed the crystalline nature of the nanoparticles with the mean size of 10.52 nm.The functional groups for synthesized TiO_2NPs were 1405.19,and 1053.45 cm^(-1)for-NH_2 bending,primary amines and amides and 1053.84and 1078.45 cm^(-1)for C-O.SEM micrographs of the synthesized TiO_2 NPs showed the aggregated and spherical in shape.The maximum efficacy was observed in the aqueous flower extract of C.gigantea and synthesized TiO_2 NPs against R.(B.)microplus(LC_(50)=24.63 and 5.43 mg/L and r^2=0.960 and 0.988)and against H.bispinosa(LC_(50)=35.22 and 9.15 mg/L and r^2=0.969 and 0.969).respectively.Conclusions:The synthesized TiO_2 NPs were highly stable and had significant acaricidal activity against the larvae of R.(B.)microplus and adult of H.bispinosa.This study provides the first report of synthesized TiO_2 NPs and possessed excellent anti-parasitic activity. | Sampath Marimuthu Abdul Abdul Rahuman Chidambaram Jayaseelan Arivarasan Vishnu Kirthi Thirunavukkarasu Santhoshkumar Kanayairam Velayutham Asokan Bagavan Chinnaperumal Kamaraj Gandhi Elango Moorthy Iyappan Chinnadurai Siva Loganathan Karthik Kokati Venkata Bhaskara Rao | 2013 | Asian Pacific Journal of Tropical Medicine2013，6，9： | 2 |
| 7 | 高性能纤维增强水泥基复合材料钢筋混凝土梁的抗弯性能(英文)显示文摘本文对纤维增强水泥基复合材料(FRCC)和混和纤维增强水泥基复合材料(HFRCC)在铰链部分的抗弯性能进行了试验研究。采用中等约束的梁试件,在单调荷载作用下进行试验。本研究采用了7种不同类型的FRCC,包括混和纤维在不同截面、不同体积下的复合材料。同时采用柱状试样和棱镜试样等伴随试样,研究复合材料的物理性能。弯矩曲率、刚度特性、延性、裂纹形态和修正的弯曲损伤率是研究混和复合材料使用效果中的主要因素。实验结果表明,改进后材料的屈服性能、刚度退化率较低,损伤容限能力优于常规技术的。 | SIVA Chidambaram R PANKAJ Agarwal | 2019 | Journal of Central South University2019，26，9： | 2 |
| 8 | Linear stability analysis of particlel-aden mixing layers using Lagrangina particle tracking显示文摘 | Narayanan Chidambaram Lakahel Djamel Yadigaroglu George | 2002 | Powder Technology2002，125，2： | 1 |
| 9 | Green synthesis of gold nanoparticles using seed aqueous extract of Abelmoschus esculentus and its antifungal activity显示文摘 | Chidambaram J Rajendiran R Abdul A R | 2013 | Industrial Crops and Products2013，45，： | 1 |
| 10 | New venture teams and the quality of business opportunities identified:faultlines between subgroups of founders and investors显示文摘 | LIM J A Y K BUSENITZ L W CHIDAMBARAM L | 2013 | Entrepreneurship Theory and Practice2013，37，1： | 1 |
| 11 | Effect of blend ratio,loop length, and yarn linear density on thermal comfortproperties of single jersey knitted fabrics 显示文摘 | CHIDAMBARAM P GOVINDAN R | 2013 | InternationalJournal of Thermophysics2013，34，1： | 1 |
| 12 | Coblation tonsillectomy versus dissection tonsillectomy:postoperative hemorrhage显示文摘 | Belloso A Chidambaram A Morar P | 2003 | Laryngoscope2003，113，11： | 1 |
| 13 | In vivo demonstration of impaired microcirculation in steatotic human liver grafts显示文摘 | Seifalian AM Chidambaram V Rolles K | 1998 | Liver Transpl Surg1998，4，1： | 1 |
| 14 | Heart failure in COVID-19 patients:Critical care experience显示文摘Patients with heart failure(HF)may be at a higher risk of coronavirus disease 2019(COVID-19)infection and may have a worse outcome due to their comorbid conditions and advanced age.In this narrative review,we aim to study the interaction between COVID-19 and HF from a critical care perspective.We performed a systematic search for studies that reported HF and critical carerelated outcomes in COVID-19 patients in the PubMed and Medline databases.From a total of 1050 papers,we identified 26 that satisfied the eligibility criteria for our review.Data such as patient demographics,HF,intensive care unit(ICU)admission,management,and outcome were extracted from these studies and analyzed.We reported outcomes in heart-transplant patients with COVID-19 separately.In hospitalized patients with COVID-19,the prevalence of HF varied between 4%and 21%.The requirement for ICU admission was between 8%and 33%.HF patients with COVID-19 had an overall mortality rate between 20%and 40%.We identified that HF is an independent predictor of mortality in hospitalized COVID-19 patients,and patients with HF were more likely to require ventilation,ICU admission and develop complications.Patients with HF with reduced ejection fraction did worse than those with HF with midrange ejection fraction,and HF with preserved ejection fraction.COVID-19 patients with HF should be identified early and managed aggressively in an attempt to improve outcomes in this cohort of patients. | Kevin John John Ajay K Mishra Chidambaram Ramasamy Anu A George Vijairam Selvaraj Amos Lal | 2022 | World Journal of Virology2022，11，1： | 1 |
| 15 | Formulation and characterization of new layered diffusional matrices for zero-order sustained release 显示文摘 | Chidambaram N Porter W Flood K | 1998 | Controlled Release1998，52，12： | 1 |
| 16 | Development of an immunological staging system to prognosticate disese course in malignant overical nepolasia显示文摘 | Balaram P Chidambaram S | 1990 | Gynecoiogic Oncology1990，37，： | 1 |
| 17 | Placental microRNA expression in pregnancies complicated by preeclampsia显示文摘 | Daniel A. Enquobahrie Dejene F. Abetew Tanya K. Sorensen David Willoughby Kumaravel Chidambaram Michelle A. Williams | 2011 | American Journal of Obstetrics and Gynecology2011，，2： | 1 |
| 18 | Modified relay feedbackmethod for improved system identification显示文摘 | Srinivasan K Chidambaram M | 2007 | Computersand Chemical Engineering2007，，： | 1 |
| 19 | Limitations of a PI controller for a first-order nonlinear process with dead time 显示文摘 | Anandanatarajan R Chidambaram M Jayasingh T | 2006 | The Instrumentation Systems and Automation Society2006，45，2： | 1 |
| 20 | Ventricular septal defect in first year of life 显示文摘 | Mehta AV Chidambaram B | 1992 | Am J Cardiol1992，170，： | 1 |
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