field studies of glacial and dune terrain

... requirement of the selectivity and sensitivity to detect and quantify the total morphine and total codeine concentrations The sample preparation often consists of hydrolysis, extraction and derivatization ... physician As the use and demand of opium increased the opium poppy began to be grown and processed in many countries (2) Opium poppy contains a large number of alkaloids (1) Four of them have found ... DEPARTMENT OF LABORATORY MEDICIN DIVISION OF CLINICAL PHARMACOLOGY Karolinska Institutet, Stockholm, Sweden ANALYTICAL STUDIES OF MORPHINE AND RELATED SUBSTANCES USING LC-MS/MS Maria Andersson

Ngày tải lên: 03/12/2016, 09:34

... enterocins A and B, propro-duced by ser-ine protease of Enterococcus faecalis In no case has a thorough characterization of its therapeutic profile been conducted Some studies of immunogenicity and in ... (blood, human, and mouse cell lines) and in vivo using murine and zebrafish embryo models The novelty of this study lies mainly in the scarcity and limited scope of toxicological analyses of bacteriocins ... Maquedae,⇑ a Department of Molecular Genetics, Faculty of Science and Engineering, Nijenborgh 7, 9747 AG, University of Groningen, Groningen, the Netherlands b CIBER-EHD, Department of Pharmacology Centre

Ngày tải lên: 15/01/2020, 11:16

... spot and late leaf spots, singly or together can cause losses in pod yield of over 50% and reduce the quality of the pod and fodder Screening of genotypes and advance breeding lines is one of the ... fungicide sprayings and other control methods Identification of resistant sources and knowledge of components and mechanism of resistance are the pre-requisite for the success of disease resistance ... M (2017) Differentiation, Prediction and Management of Early and Late Leaf Spot of Peanut in the Southeastern United States and Haiti Ph D, the University of Georgia, Trang 10Georgia McDonald,

Ngày tải lên: 20/09/2020, 20:08

... thousands of hectares of rice in the region that is the main pool of rice of Vietnam and damages thousands of tons of rice every year As an agriculture country, this damage for Vietnam is of great ... of food crops and livestock, and force dislocation of households and communities The economic impact of a disaster usually consists of damage to infrastructure, housing, loss of lives, loss of ... Case study of earthquakes and tsunamis in Japan in March 2011 Japan is an island nation in East Asia with a total of 6,852 islands extending along the Pacific coast of Asia The islands of Japan

Ngày tải lên: 23/01/2021, 21:16

... fragments of the complexes The ESI mass spectra of the complexes 3.3 Electronic spectra The UV-Vis spectra of these cryptates were dominated by intense ligand bands at ca 275, 286, and 380 nm The band ... luminescence, and dye-sensitized solar cell studies of mono and d-f hetero binuclear cryptates Arunachalam VIJAYARAJ,1 Raju PRABU,1 Ranganathan SURESH,1 Subbaiah MANOHARAN,2 Sambandan ANANDAN,2 Vengidusamy ... while the other 2 bands were designated as a π – π * transition of the K band of the benzene rings The data are given in Table 1 The d–d transition of M [VO(IV), Co(II), Ni(II) and Cu(II)] in cryptates

Ngày tải lên: 12/01/2022, 22:42

... ion and W is the mass of biomass (g) 2.5.1 Optimization of pH To determine the effect of pH on the adsorption of the metal ions, 0.2 g of the biomass was equilibrated with 50 mL of 50 mg/L of ... analysis of FTIR spectrum reveals that the metal ions uptake by roger mushroom involve interaction of metal ion and hydroxyl, carboxyl and carbonyl groups of the biomass at optimum pH of 4.5 – 6.0 and ... 2.5.5 Desorption studies In order to study the desorption and recovery of metal ions adsorbed, 20 mL solution of 50 mg/L of each metal ion were equilibrated with 1.9 g of biomass and shaken in

Ngày tải lên: 19/11/2022, 11:44

... (B) HPRT and hypoxanthine (C) PRTFDC1 and guanine (D) HPRT and guanine. Table 2 Kmand Vmaxvalues for Hx and G in the presence of 1 m M PRPP, determined using the DE-81 filter paper assay and tritium-labeled ... characterization of numerous com-plexes of the human HPRT and several bacterial and protozoan HPRTs have been undertaken [13–17] The structure of human HPRT can be divided into two domains: a core domain and ... domain is mainly built up by residues from the C-terminus and consists of a two-stranded anti-parallel b-sheet composed of b2 and b9 and an a-helix from the C-terminus (Fig 1A) The two subunits

Ngày tải lên: 15/02/2014, 01:20

... Masaharu Ishii1and Yasuo Igarashi1 1 Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan 2 Department of Chemistry, School of Medicine, ... components of the reductive TCA cycle and catalyze the anabolic reductive carboxylation of acetyl-CoA and succinyl-CoA, respectively [17,18] Four of the five subunits correspond to those of the heterotetrameric ... reduction of ferredoxin Thus, the identification and characterization of enzymes that transfer electrons to ferredoxins in vivo is of particular importance for the improvement of this coupled assay and

Ngày tải lên: 16/02/2014, 09:20

... A-chain and B-chain of nPS, and in the case of His37, the v1 torsion angle changes from 63.34° to )67.80° and )52.11° for the A-chain and B-chain of nPS, respectively The imidazole ring of His34 ... we report the results of the structural studies of the pantoate-bound form of the N-terminal domain of E coli PS (nPS) The structure and substrate-binding interactions of E coli nPS have been ... specific residues of nPS as a function of substrate(s) The resonances of free nPS are shown in red, those of nPS bound to D-pantoate are shown in blue, and those of nPS bound to D-pantoate and ATP are

Ngày tải lên: 16/02/2014, 09:20

... Review —A Review of Indoor Air Pollution and Health Problems from the Viewpoint of Environmental Hygiene: Focusing on the Studies of Indoor Air Environment in Japan Compared to Those of Foreign Countries ... concentration in 20002) and the Ministry of Land Infrastructure and Transport ∗ To whom correspondence should be addressed: Depart-ment of Biomedical Laboratory Sciences, Faculty of Life Sci-ences, ... the Ministry of Health, Labour, and Welfare of Japan announced the guideline value of formalde-hyde first and individual volatile organic com-pounds (VOCs).13, 14) In Japan, occupants of newly built

Ngày tải lên: 17/02/2014, 22:20

... 98% pure and were brownish (Figs S1 and S2) The presence of four conserved cysteines and the brownish appearance of purified WhiB1, WhiB2, WhiB5, WhiB6 and WhiB7 indicated the presence of an iron–sulfur ... signature), 218 nm (b strand signature), 202–204 nm (random coil signature) In WhiB5 and WhiB6, the structure was dominated by a helices and b strands and the propor-tion of these structural elements ... detail the biochemical and biophysical properties of WhiB2, WhiB5, WhiB6 and WhiB7 of M tuberculosis and present a comprehensive comparative study on the molecular properties of all WhiB proteins

Ngày tải lên: 18/02/2014, 12:20

... NP and MP and between HP and HPO in accordance with the similar shapes and sizes between NP and MP and between HP and HPO The different Kd values are proportional to the different values of the ... face of the aldehyde. Trang 3aldol mechanism [7] or an alternative mechanism viathe deprotonation and re-protonation of C2¢ and report a comprehensive equilibrium and kinetic study of SaDHNA and ... enzyme, and the middle three spectra were obtained 18, 35, and 70 min after the addition of the enzyme The top spectrum is that of DHMP for comparison Only the NMR signals of the 2¢ and 3¢ protons of

Ngày tải lên: 19/02/2014, 00:20

... mechanism and binding of substrates was investi-gated for the multisubstrate Drosophila melanogaster deoxyribonucleoside kinase Mutation of E52 to D, Q and H plus mutations of R105 to K and H were ... value for dThd and dCyd, of approximately 200- and 100-fold, respectively The kcat values were only decreased approximately twofold for both substrates Phosphorylation of nucleosides and nucleoside ... and Rfree were 23.2 and 24.2%, respectively (Table 3) Most of the protein could be found in the electron-density map, with the exception of resi-dues 1–11 and 210–230 The loop connecting a9 and

Ngày tải lên: 19/02/2014, 02:20

... TARFH2 and FMNH2, are C(5a), C(7), C(9a) and C(10a), and as already mentioned above, C(2) (Fig 7B) With respect to the 13C chemical shifts of FMNH2, C(2), C(5a), C(9a) and C(10a) of wild-type and ... the chemical shifts of C(4a) and C(5a) and C(7) parallel that of N(10), i.e follow the degree of increasing sp2 hybridization of N(10) in the order C138S, C138S + PMA, E159Y and native protein ... native mutant protein E159Y in the oxidized and reduced states For comparison the chemical shifts of free FAD and those of other members of the class of pyridine nucleotidedisulde oxidoreductases...

Ngày tải lên: 16/03/2014, 16:20

... the structure of a complex of oxalyl CoA decarboxylase with 3-deazaThDP and oxalyl CoA was solved and this revealed both the CoA binding site and the ordering of the C-terminus of the protein ... required for the synthesis of nucleotides and, therefore, the expression of TK and of other enzymes of the pathway is upregulated in cancer cells It has been shown both in vitro and in vivo that targeting ... Ki value of 0.4 lm [20], yeast PDC with a Ki value of 6.5 lm [21] and PDH complex with an IC50 of 0.046 lm [22] TetrahydroThDP made by sodium borohydride reduction of ThDP consists of two racemic...

Ngày tải lên: 29/03/2014, 23:20

... gradient of species richness illustrates the complex evolutionary history of global biodiversity, and many studies have placed it in the context of geological history and rates of speciation and extinction ... processes involved in the evolution and diversification The Dynamical Processes of Biodiversity Case Studies of Evolution and Spatial Distribution of the Vanilla genus and concluded that Vanilla must ... from Reunion Island (from 1848) and later from a cartel of Indian Ocean Island producers (Madagascar, Reunion, Comoros and Seychelles) The true origin of cultivated vanilla outside of Mexico was...

Ngày tải lên: 28/06/2014, 08:20

... contributed to the design of the study and the writing of the manuscript JB and IPH contributed to the design of the study and the writing of the manuscript All authors read and approved the final ... Award) and the Dutch family studies were supported by The Netherlands Asthma Foundation and the National Institute of Health (NIH) We thank Professor William Cookson for providing datasets and Dr ... familial aggregation and heritability estimates vary between 36–79% [2] A greater understanding of the genetic basis of asthma and atopy holds great promise for the identification of novel therapeutic...

Ngày tải lên: 12/08/2014, 15:21

... since the L/D ratio of a CPT exceeds that of a pile, the ratio of shaft to base area is higher, and hence the ratio of Qs/Qb Analysis of the interaction between the shaft and base offers a mechanism ... between Figures 2, and are not random, and cannot be entirely attributed to ambiguous historical field records The majority of field records of low qb/qc which form the basis of the apparent scale ... at plunging failure, a mean ratio of predicted to measured capacity of 1.02 is found, with a standard deviation of 0.17 and a coefficient of variation (COV) of 0.17 This fit to the database in...

Ngày tải lên: 13/08/2015, 10:38

... the supervision of Assoc Prof Sow Chorng Haur (Department of Physics) and Assoc Prof Chin Wee Shong (Department of Chemistry), National University of Singapore, between August 2009 and 31 Jan 2014 ... A Kinetic and equilibrium studies of the removal of ammonium ions from aqueous solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite Journal of Hazardous ... addition of phosphate, (d) at different NaOH concentrations and pH 84 5.1 (a) CVs of CoOOH electrode in the absence and presence of various concentrations of H2O2 (scan rate: 10 mV/s), (b) LSVs of...

Ngày tải lên: 10/09/2015, 09:27

... recruitment of the ER tubules onto the segregated chromosomes, followed by the ER flattening and resealing (Anderson and Hetzer, 2007, 2008) However, the removal of reticulons and DP1/Yop1, and the ... of the structure and function of the ER and the actin cytoskeleton The last two sections further review closed mitosis and cytokinesis in fission yeast where the interactions between the ER and ... link and coordinate functions of these two organelles Recent studies in mammalian and yeast cells uncovered the existence of protein tethers that ensure the ER-mitochondria contacts (de Brito and...

Ngày tải lên: 10/09/2015, 09:27