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Chinese Chemical Letters 2016年第1期27卷 31-36页

作者： m.Nibin Joy Bhaskaran Savitha ayyiliyath m.sajith Yadav D.Bodke Talavara Venkatesh K.K.Abdul Khader m.Syed Ali Padusha A.muralidharan Department of P.G studies and Research in Industrial Chemistry Kuvempu University Post Graduate and Research Department of Chemistry Jamal Mohamed College Bharathidasan University Organic Chemistry Division School of Chemical Sciences Kasaragod Govt.College Kannur University

A rapid, efficient, and facile synthesis of an assortment of C-2 substituted imidazopyrazines has been achieved by utilizing the palladium catalyzed Suzuki cross-coupling of 2-bromo-1H-imidazo[4,5-b]pyrazine with various boronic acids under microwave irradiation. The utilization of（A-^（ta）phos）_2PdCl_2 as a catalyst in combination with Cs F as base and DmE-H_2O（4：1） as the solvent system at 100℃ procured the diaryls in acceptable to excellent yields. Prominent features of this developed methodology include short reaction times, fewer side products, and exceptional tolerance to a wide variety of functional groups.

关键词： Imidazopyrazine Boronic acid Suzuki coupling microwave

Early Surgical Correction of Transplant Renal Artery Stenosis (Tras)—A Case Report

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Surgical Science 2019年第5期10卷 164-168页

作者： m. P. Vettath A. V. Kannan m. Ashish N. sajith Chairman Cardiothoracic & Vascular Surgery Meitra Hospital Kozhikode Kerala India Chief Cardiac Anaesthesiologist Meitra Hospital Kozhikode Kerala India Chairman Department of Cardiology Meitra Hospital Kozhikode Kerala India HOD Department of Nephrology Aster MIMS Kozhikode Kerala India

Saphenous vein graft (SVG) bypass of the renal artery from the aorta has been well documented, though bypass of the internal iliac artery to the individual renal arteries is not yet described. We herewith present a case of early TRAS detected 6 hours after a successful renal transplant. Renal angiography showed complete stenosis of the internal iliac to renal artery anastomosis. Percutaneous transplant artery angioplasty was attempted, but was not successful;hence the surgical correction of the same was done. This is to demonstrate the use of saphenous vein bypass of anastomotic obstruction of the previous anastomosis, in case of short renal artery.

关键词： Transplant Renal Artery Stenosis Saphenous Vein Graft Renal Angiography Percutaneous Transluminal Angioplasty (PTA)

SYNTHESIS AND mICROWAVE DIELECTRIC PROPERTIES OF Li_(2)mgSiO_(4)CERAmICS PREPARED USING CITRATE GEL ROUTE

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Journal of Advanced Dielectrics 2011年第2期1卷 209-213页

作者： S.GEORGE V.K.sajith m.T.SEBASTIAN S.RAmAN P.mOHANAN materials and minerals Division National Institute for Interdisciplinary Science and Technology Thiruvananthapuram 695019 India Department of Electronics CUSAT Cochin 682022India

The comparison of the low temperature sintering and the microwave dielectric properties of Li_(2)mgSiO_(4)(LmS)ceramics prepared by citrate gel(CG)route and solid state(SS)ceramic route are discussed in this *** LmS prepared using CG route sintered at 1175℃/2h hasε_(r)=5.3 and tanδ=1×10^(-3)at 9 *** si ntering temperature of LmS is lowered to 950℃with the addition of 5 wt%lithium magnesium zinc borosilicate glass and hasε_(r)=5.6 and tanδ=2×10^(-3)at *** amount of glass required to lower the sintering temperature of ceramics prepared using CG are slightly higher than that of Ss ceramic *** LmS ceramics prepared using SS ceramic route shows excellent microwave dielectric properties with low sintering tem-perature compared to CG route.

关键词： Dielectrics electroceramics LTCC substrates glass ceramic

Lignocellulolytic activities of a novel strain of Trichoderma harzianum

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Advances in Bioscience and Biotechnology 2013年第2期4卷 214-221页

作者： m. Rubeena Kannan Neethu S. sajith S. Sreedevi Prakasan Priji K. N. Unni m. K. Sarath Josh V. N. Jisha S. Pradeep Sailas Benjamin Enzyme Technology Laboratory Biotechnology Division Department of Botany University of Calicut Malappuram India

This study describes a novel dark-green spore producing strain of Trichoderma harzianum exhibiting higher activities of cellulase, hemicellulase and ligninase on specific plate assays. To assess the cellulase production in detail, basal salt medium (BSm) was supplemented with synthetic [carboxymethyl cellulose (CmC), glucose, sucrose, dextrose, lactose or maltose] and natural (flours of banana, banana peel, jack seed, potato or tapioca) carbon as well as nitrogen (yeast extract, beef extract, peptone, NaNO3 or NH4NO3) sources. Temperature and pH optima were 28?C and 4, respectively for the growth of the fungus in CmC- BSm with 146 U/ml cellulase activity. Flours of potato and banana supported comparable yields of cellulase to that of CmC (147 U/ml and 168 U/ml, respectively), while sodium nitrate was the preferred nitrogen source (150 U/ml). The water soluble yellowish-green pigment (a probable siderophore) extracted from the spores showed an absorption maximum at 414 nm. To comprise, this fungus shows the complete lignocellulolytic potential which offers great industrial significance, especially for the ethanol production from the lignocellulosic waste coupled with the production of a new pigment.

关键词： Trichoderma harzianum morphology Submerged Fermentation Yellowish-Green Pigment

A novel strain of Trichoderma virideshows complete lignocellulolytic activities

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Advances in Bioscience and Biotechnology 2012年第8期3卷 1160-1166页

作者： Kannan Neethu m. Rubeena S. sajith S. Sreedevi Prakasan Priji K. N. Unni m. K. Sarath Josh V. N. Jisha S. Pradeep Sailas Benjamin Enzyme Technology Laboratory Biotechnology Division Department of Botany University of Calicut Malappuram India

In this study we describe a novel dark-green strain of Trichoderma viride exhibiting complete ensemble of cellulase, hemicellulase and ligninase activities on specific plate assays. To assess the cellulase production in detail, basal salt medium (BSm) was fortified with synthetic (carboxymethyl cellulose (CmC), glucose, sucrose, dextrose, lactose or maltose) and natural (flours of banana, banana peel, jack seed, potato or tapioca) carbon as well as nitrogen (yeast extract, beef extract, peptone, NaNO3 or NH4NO3) sources. Temperature and pH optima were 28°C and 4, respectively for the growth of the fungus in CmC-BSm with 137 U/mL cellulase activity, which was enhanced to 173 U/mL at 1.25% CmC concentration. Flours of potato and banana peel supported comparable yields of cellulase to that of CmC, while sodium nitrate was the preferred nitrogen source. The water soluble bluish-green pigment (a probable siderophore) extracted from the spores showed an absorption maximum at 292 nm. To sum up, the complete lignocellulolytic potential of this fungus offers great industrial significance, coupled with the production of a new pigment.

关键词： Trichoderma viride morphology Liquid Fermentation Bluish-Green Pigment

A monograph on amylases from Bacillusspp.

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Advances in Bioscience and Biotechnology 2013年第2期4卷 227-241页

作者： Sailas Benjamin R. B. Smitha V. N. Jisha S. Pradeep S. sajith S. Sreedevi Prakasan Priji K. N. Unni m. K. Sarath Josh Enzyme Technology Laboratory Biotechnology Division Department of Botany University of Calicut Kerala India

Owing to the production of alpha, beta and gamma amylase subtypes;starch degrading microbes, especially bacteria have an invincible role in the food, fermentation, textile and paper industries. Of them, α-amylases from Bacillus spp. have contributed tremendous advancements in bio-industry, especially in starch, detergent and pharmaceutical arena. Though general reviews are seen in literature on amylases, no focused review is available yet solely on α-amylases produced by Bacillus spp. Hence, this focused review on α-amylases from the genus Bacillus is designed in such a way that it should give a vivid picture on most of the aspects on bacillial α-amylases in a handy module with an industrial perspective. With a short introduction on amylases in general, α-amylases from various species of Bacillus reviewed herein encompasses production of α-amylases by submerged and solid-state fermentations;nutrients and other factors required for maximizing production;immobilization strategies for whole cells or purified enzyme;an overview on the molecular weight of the enzyme;followed by distinct sections for purification, characterisation, stability and crystal structure;and concluded with a section on industrial applications of the α-amylases from Bacillus spp.

关键词： Bacillus Amylases Production Fermentation Crystal Immobilization Stability molecular Weight Characteristics Applications