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( Saravanan ),( Venkatakrishnan Sivaraj ),( Jabez Osborne ),( Munusamy Madhaiyan ),( Lazar Mathew ),( Jong Bae Chung ),( Ki Sup Ahn ),( Tong Min Sa ) 한국미생물생명공학회 2007 Journal of microbiology and biotechnology Vol.17 No.9
Saravanan, Chokalingam,Chitumalla, Ramesh Kumar,Ashwin, Bosco Christin Maria Arputham,Senthilkumaran, Marimuthu,Suresh, Palaniswamy,Jang, Joonkyung,Muthu Mareeswaran, Paulpandian Elsevier 2018 Journal of luminescence Vol.196 No.-
<P><B>Abstract</B></P> <P>The host-guest interaction of gallic acid (GA) with p-sulfonatocalixarene (p-SC4) is studied using emission and excited state lifetime techniques. The quenching effect on the emission intensity and excited state lifetime is observed upon binding. The impact of oxidation potential upon binding is studied using cyclic voltammetric technique. The structural features and the mode of binding of GA with p-SC4 is examined using <SUP>1</SUP>H NMR and rotating frame overhauser effect spectroscopy (ROESY) techniques. The binding of GA with p-SC4 has also been examined by means of density functional theory simulations. The calculated interaction energy of GA with p-SC4 (22.15kcal/mol) indicates the strong binding nature.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Formation of stable complex between GA and p-SC4 is studied in solution state. </LI> <LI> Quenching on emission intensity and lifetime of GA is observed upon addition of p-SC4. </LI> <LI> The downward potential shift is detected upon addition of GA on p-SC4 and vice versa. </LI> <LI> The <SUP>1</SUP>H NMR and ROESY spectral studies reveals that the GA is included into p-SC4. </LI> <LI> The theoretical simulations explains the intermolecular hydrogen bonding interactions between the GA and the p-SC4. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Backgrounds/Aims: We intended to determine the role of the Oral glucose tolerance test (OGTT), in addition to volumetry, in preoperative assessment of patients undergoing liver resection. Methods: This was a prospective study conducted at a tertiary care hospital, between February 2009 and February 2011. OGTT curve (parabolic/linear), linearity index (LI) and Parenchymal Hepatic Resection Rate (PHRR) were correlated with postoperative outcomes in terms of postoperative liver failure (PLF), by 50-50 criteria, morbidity, mortality and hospital stay. Results: Of the 33 patients included in the study, 23 (69.7%) patients underwent major liver resections. Hepatocellular carcinoma (30.3%) was the leading indication. The overall postoperative morbidity rate was 72.7%, but major complications occurred in 3 (9.1%) patients only. There was no 90-day mortality. The 50-50 criteria were met by 3 patients undergoing major resection. Significant correlation was noted between the linear OGTT curve and the overall hospital stay (12.1 days vs. 9.6 days in parabolic; p=0.04). Patients with linear OGTT met the 50-50 criteria more often (18%) than those having a parabolic curve (4.5%; p=0.25). Although the OGTT was more often linear with occurrence of morbidity (41.7% vs 11.1%), major morbidity (66.7% vs 30%) and PLF by 50-50 criteria (66.7% vs 30%), it was not statistically significant. The linearity index was marginally lower (0.9 vs 1.2) in the presence of major morbidity and PLF by 50-50 criteria. Conclusions: Linear OGTT affects the PLF and major morbidity, therein impacting the hospital stay. OGTT LI and PHRR can help predict postoperative outcome for a given extent of liver resection.
Pregnancy and childbirth complications are a leading cause of death and disability among women of reproductive age in developing countries. The high maternal and infant mortality rates and low uptake of antenatal and postnatal care have been topics of deliberation for researchers in the fields of medicine, public health, anthropology and sociology. Worldwide data show that, by choice or out of necessity, 47 percent of births in the developing world are assisted by Traditional Birth Attendants (TBAs) and/or family members. Since the 1970s the training of TBAs has been one of the primary single interventions undertaken by funding agencies, who assume that maternal and perinatal mortality in developing countries is high because many women deliver babies at home, assisted by TBAs or relatives. However, since the 1990s, the TBA training strategy has been increasingly seen as irrelevant, ineffective or a failure, given the evidence that the maternal mortality rate (MMR) in developing countries did not reduce. Hence, many donor agencies providing funding for TBA training in developing countries have withdrawn funds, reallocating them to providing skilled attendants during delivery. Researchers have expressed concern that a shift in policy has taken place without adequate evidence about the relevance and effectiveness of the TBA training program. The objective of this paper is to review research evidence from India and other developing countries on the relevance of TBAs by assessing their contribution to providing maternal and infant health care service at different stages of pregnancy, during and after delivery; outcomes of training; and birthing practices adopted by them in home births. This review reveals that TBAs acquire knowledge of the birth process through experience, which they bring to their practice and which they use to explain events in their local context. Certain harmful TBA practices have changed and others have been introduced into the community through training. An appropriate understanding of useful and harmful local practices in communities is therefore important background information that trainers need to know before conducting training programs in a particular area. Certain redundant birthing practices such as discarding colostrum, bathing babies immediately after birth, using unhygienic material to cut and apply on the cord and delayed weighing of babies continue to be practiced not only in home births but also in health institutions in India. This review article highlights the importance of training to improve TBAs’ knowledge, together with community awareness programs. Potentially detrimental cultural beliefs need to be addressed too, when TBA training programs are initiated in order to improve maternal and child health outcomes.
Aromatics, particularly p-xylene (pX), has been considered as an important building block for terephthalic acid synthesis that can be used as monomer for polyester and polyethylene terephthalate. In the present study, the SBA-15 supports calcined at the temperature range of 500-900 °C (denoted as SBA-15(500-900)) were modified with zirconium phosphate (ZrP) and they were used for the production of pX from 2,5-dimethylfuran (DMF) with gaseous ethylene through cycloaddition reaction. The ZrP grafted on SBA-15(500) (ZrP-SBA-15(500)) displayed a maximum 89% DMF conversion with 95% pX selectivity, which was significantly higher than the ZrP on the SBA-15(900). The high catalytic performance for pX production on the ZrP-SBA-15(500) is attributed to the formation of different surface active ZrP species from in-situ reaction of both Zr and P precursors on the different silanol groups on the SBA-15(500) with an enhanced acid sites as well.
<P><B>Abstract</B></P> <P>Combined effects of magnetic and electric fields on the confined exciton in an InAs<SUB>1−<I>x</I> </SUB>P<I> <SUB>x</SUB> </I>/InP (<I>x</I>=0.2) quantum well wire are investigated taking into account the geometrical confinement effect. Variational formulism, within the frame work of effective mass approximation, is applied to obtain the exciton binding energy. The second order harmonic generation and the optical gain are carried out using compact density method. The strain effects are included with the confinement potential in the Hamiltonian. The energy difference of the ground and the first excited state is found in the presence of magnetic and electric fields taking into the consideration of spatial confinement effect. The result shows that the optical properties are more influenced taking into account the effects of geometrical confinement, magnetic field and electric field. It is shown that the telecommunication wavelength can be achieved with the suitable doping barrier material with the wire material and the external perturbations.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Combined effects of magnetic and electric fields on the confined exciton in an InAs<SUB>1−<I>x</I> </SUB>P<I> <SUB>x</SUB> </I>/InP wire are investigated. </LI> <LI> Variational formulism is applied to obtain the exciton binding energy. </LI> <LI> Second order harmonic generation and the optical gain are carried out using compact density method. </LI> <LI> The strain effects are included with the confinement potential in the Hamiltonian. </LI> <LI> Optical properties are more influenced with the effects of geometrical confinement and the external perturbations. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Variation of gain as a function of photon energy for various values of measure of magnetic field strength in a InAs<SUB>0.8</SUB>P<SUB>0.2</SUB>/InP quantum well wire is shown for <I>F</I>=0V/cm and <I>F</I>=100V/cm, with the constant electron density. The wire radius is taken as 50Å.</P> <P>[DISPLAY OMISSION]</P>