Characterizations and applications

The goal of the thesis: Determine the time of harvesting the natural growing Dangshen roots; research on inulin extraction, purification, and characterization of inulin molecular structure in Dangshen tubers naturally growing in Lac Duong district, Lam Dong province; research on spray drying to create Dangshen powder and experiment to create a synbiotic powder from spray-drying powder, oriented application in food.

33p guitaracoustic09 14-01-2022 29 1   Download

Find the optimal technology parameters and components for fabricating Fe-based nanomaterials using high-energy ball milling method; clarify the relationship between technological conditions with the structural characteristics and magnetic properties of fabricated materials; assess the applicability of Fe, Fe-Co nano materials in fabricating nanocomposite magnets and magnetic induction heating.

24p capheviahe26 25-01-2021 19 2   Download

The layout of the thesis: In addition to the introduction, conclusion, list of symbols and abbreviations, list of tables, list of images and drawings, list of published works related to the thesis. Project, appendices and references.

27p larachdumlanat129 20-01-2021 23 3   Download

The present article discusses the application of linear regression, scaling factors (SF) and the so-called “mean activity method” to estimate the activity of DTM nuclides on metallic waste produced at the European Organization for Nuclear Research (CERN).

11p christabelhuynh 30-05-2020 9 1   Download

The objective of the present work is to study the irradiation effects on third generation SiC fibers which fulfill the minimum requisites for nuclear applications, i.e. Hi-Nicalon type S, hereafter HNS, and Tyranno SA3, hereafter TSA3. With this purpose, these fibers have been ion-irradiated with 4 MeV Au ions at room temperature and increasing fluences.

9p christabelhuynh 31-05-2020 19 1   Download

Nuclear metrology is an essential aspect to consider for further improvements of the initial characterization of sites under decommissioning. The H2020 Euratom project INSIDER in June 2017 aims at improving the management of contaminated materials arising from decommissioning and dismantling (D&D) operations by proposing an integrated methodology for radiological characterization.

8p christabelhuynh 29-05-2020 7 1   Download

Force measurement is very vital in various scientific applications and its precise measurement is very necessary for reliability of the measurement process. There are several types of simple shaped force transducers, which may range from ring shaped force transducers to cantilever type or beam type force transducers.

11p tohitohi 19-05-2020 7 0   Download

The synthesis, structural identification of four novel cobalt and ironbased metal-organic frameworks (MOFs), named VNU-10 (cobalt-based MOF), VNU-15 (iron-based MOF, VNU = Vietnam National University), Fe-NH2-BDC and Fe-BTC have been done by single crystal x-ray diffraction. Full characterization and application of VNU-10, VNU-15 were undertaken, while preliminary characterizations have been done for Fe-NH2-BDC and Fe-BTC.

26p covid19 02-03-2020 23 1   Download

The thesis aims to successfully fabricate NaHAp films doped separately and simultaneously with microelements: sodium, magnesium, strontium, fluorine, copper, silver and zinc on 316L stainless steel substrate to meet the requirement of screw bracing bone. Study on physicochemical characteristics, study on toxicity, antibacterial ability and bio-compatibility of NaHAp films separately and concurrently with trace elements.

27p xacxuoc4321 11-07-2019 20 3   Download

Guanosine triphosphate nucleotide analogues such as GppNHp (also named GMPPNP) or GTPcS are widely used to stabilize rapidly hydrolyzing protein-nucleotide complexes and to investigate biochemical reaction pathways. Here we describe the chemical synthesis of guanosine 5¢-O-(c-amidotriphosphate) (GTPcNH2) and a new synthesis of guanosine 5¢-O-(c-fluorotriphosphate) (GTPcF). The two nucleotides were characterized using NMR spectroscopy and isothermal titration calorimetry. Chemical shift data on 31P, 19F and 1H NMR resonances are tabulated.

9p system191 01-06-2013 32 5   Download

Cytochrome c is widely distributed in bacterial species, from mesophiles to thermophiles, and is one of the best-characterized redox proteins in terms of biogenesis, folding, structure, function, and evolution. Experimental molecular biology techniques (gene cloning and expression) have become applicable to cytochrome c, enabling its engineering and manipulation. Heterologous expression systems for cytochromes c in bacteria, for use in mutagenesis studies, have been established by extensive investigation of the biological process by which the functional structure is formed. ...

7p research12 01-06-2013 32 3   Download

The nitrilase AtNIT1 fromArabidopsis thalianawas over-expressed inEscherichia coliwith an N-terminal His6tag and puri®ed by zinc chelate anity chromatography in a single step almost to homogeneity in a 68% yield with a speci®c activity of 34.1 Uámg )1 . The native enzyme (450 kDa) consists of 11±13 subunits (38 kDa). The temperature optimum was determined to be 35°C, and a pH optimum of 9 was found.

8p research12 23-04-2013 27 2   Download

Pycnoporus cinnabarinuslaccaselac1genewasoverexpressed in Aspergillus niger, a well-known fungal host producing a large amount of homologous or heterologous enzymes for industrial applications. The corresponding cDNA was placed under the control of the glyceraldehyde-3-phosphate dehydrogenase promoter as a strong and constitutive pro-moter. The laccase signal peptide or the glucoamylase preprosequence ofA.

8p research12 23-04-2013 51 5   Download

Tocopherols are essential micronutrients in human and animal nutrition due to their function as lipophilic anti-oxidants. Theyare exclusively synthesizedbyphotosynthetic organisms including higher plants. Despite the attributed beneficial health effects and many industrial applications, research on the tocopherol biosynthetic pathway and its regulation inplants is still limited.

9p tumor12 20-04-2013 40 4   Download

Regulated expression of transgene is essential in basic research as well as for many therapeutic applications. The main purpose of the present study is to understand the functioning of the ecdysone receptor (EcR)-based gene switch in mammalian cells and to develop improved versions of EcR gene switches.

14p inspiron33 23-03-2013 27 3   Download

Human manganese superoxide dismutase is a mitochondrial metalloenzyme that is involved in protecting aerobic organisms against superoxide toxicity, and has been implicated in slowing tumor growth. Unfortunately, this enzyme exhibits strong product inhibition, which limits its potential bio-medical applications.

9p inspiron33 23-03-2013 42 3   Download

Numerous gel-free proteomics techniques have been reported over the past few years, introducing a move from proteins to peptides as bits of informa-tion in qualitative and quantitative proteome studies. Many shotgun pro-teomics techniques randomly sample thousands of peptides in a qualitative and quantitative manner but overlook the vast majority of protein modifi-cations that are often crucial for proper protein structure and function.

13p media19 05-03-2013 38 2   Download

The study and therapeutic modulation of purinergic signaling is hindered by a lack of specific inhibitors for NTP diphosphohydrolases (NTPDases), which are the terminating enzymes for these processes. In addition, little is known of the NTPDase protein structural elements that affect enzymatic activity and which could be used as targets for inhibitor design.

18p vinaphone15 27-02-2013 38 2   Download

Nitrogenase Fe-protein modification was analyzed in the endophyticb-pro-teobacterium Azoarcussp. BH72. Application of modern MS techniques localized the modification in the peptide sequence and revealed it to be an ADP-ribosylation on Arg102 of one subunit of nitrogenase Fe-protein.

10p vinaphone15 25-02-2013 35 4   Download

Cholesterol oxidase is a bacterial FAD-containing flavooxidase that catalyzes the first reaction in cholesterol catabolism. Indeed, this enzyme catalyzes two reactions: the oxidation of the C3 -OH group of cholesterol (and other sterols) to give cholest-5-en-3-one; and its isomerization to cholest-4-en-3-one. In the past several years, the structural and functional characterization of choles-terol oxidase has been developed together with its application as a biological tool.

14p viettel02 20-02-2013 36 4   Download