Biological materials

Normally, any ferromagnetic or ferrimagnetic material undergoes a transition to a paramagnetic state above its Curie temperature. Superparamagnetism is different from this standard transition since it occurs below the Curie temperature of the material. Superparamagnetism occurs in nanoparticles which are single domain. This is possible when their diameter is below 3–50 nm, depending on the materials.

33p thinh3m 28-03-2013 63 5   Download

Phong hóa làm gãy vỡ bề mặt đá bở quá trình cơ học hoặc hóa học Sự hình thành đất bởi 5 yếu tố: Climate: khí hậu Topography: địa hình Parent material: đá gốc (rock from which the soil is formed) Time: thời gian biological processes: các quá trình sinh học

87p dungdiem 21-02-2013 270 63   Download

Polymerase Chain Reaction is widely held as one of the most important inventions of the 20th century in molecular biology. Small amounts of the genetic material can now be amplified to be able to a identify, manipulate DNA, detect infectious organisms, including the viruses that cause AIDS, hepatitis, tuberculosis, detect genetic variations, including mutations, in human genes and numerous other tasks.

62p zingzing09 24-04-2013 58 7   Download

In the aim of further research of the highly bioactive benzofuran and triazine derivatives, the synthesis of 1,2,4-triazine derivatives bearing the benzofuran moiety has been undertaken. Using a simple and convenient method, a three steps synthesis of novel functionalized 1,2,4-triazine derivatives from readily available starting materials has been described.

6p viprimi 16-12-2024 1 1   Download

The purpose of this research was to investigate the technological feasibility of biological filtration process for Mn control in Lorne WTP. This thesis consists of eight chapters. Project background and research objectives are described in Chapter 1. Chapter 2 presents an extensive literature review covering the nature of manganese, manganese analytical methods, manganese control methods, the nature of MOB and biological control of Mn in drinking water treatment. The materials and methods used throughout the experimental investigation for this study are described in Chapter 3.

119p runthenight04 02-02-2023 11 3   Download

The quantity of rice straw and straw management survey only did in WinterSpring and Fall-Winter crops in An Giang, Dong Thap, Kien Giang province and Can Tho City. The research focused on the evaluation of simply biological pretreatment, material size and mixing rate of rice straw/hyacinth with pig manure in anaerobic batch and semi-continuous condition in vitro; trial producing biogas in polyethylene digester type (PE) in household scale in vivo

24p beloveinhouse10 28-11-2021 19 3   Download

Currently, the ability to convert raw materials from lignocellulose-rich biomass by traditional methods has many limitations. Therefore, the objective of the thesis is to exploit a variety of biocatalysts (hydrolases) from fungi to efficiently convert lignocellulose-rich biomass from ABP into sugars (C5 and C6) capable of fermenting for bioethanol production. The thesis uses "enzyme cocktail" synergistic catalyst to increase the ability of biological transformation.

25p capheviahe27 23-02-2021 17 1   Download

The results of microbiological and toxicological tests have proved the safety of the bone-muscular cod waste (BMW). Waste (humerus with meat cuts) from cod cutting on fillets contains 18,95 % of a full-grade animal protein and insignificant amount of fat (0.15 %).

14p lucastanguyen 01-06-2020 21 2   Download

Peptides which should be generated from the neuropeptide FF (NPFF) precursor were identified in a neuronal (human neuroblastoma SH-SY5Y) cell line and in COS-7 cells after transient transfection of the human proNPFFAcDNA and were comparedwith those detected in themouse spinal cord. After reverse-phase high performance liquid chromatogra-phy of soluble material, NPFF-related peptides were im-munodetected with antisera raised against NPFF and identified by using on-line capillary liquid chromatography/ nanospray ion trap tandem mass spectrometry. ...

13p tumor12 20-04-2013 32 2   Download

Structural elucidation of the lipopolysaccharide (LPS) from three nontypeable Haemophilus influenzaeclinical isolates, 1209, 1207 and 1233 was achieved using NMR spectro-scopy and ESI-MS on O-deacylated LPS and core oligo-saccharide (OS) material as well as ESI-MS n on permethylated dephosphorylated OS. It was found that the organisms expressed a tremendous heterogeneous glyco-form mixture resulting from the variable length of the OS chains attached to the common structural element of H.

15p tumor12 20-04-2013 36 2   Download

The cytochromeb559 content was examined in five types of isolated photosystem II D1-D2-cytochromeb559reaction center preparations containing either five or six chlorophylls per reaction center. The reaction center complexes were obtained following isolation procedures that differed in chromatographic column material, washing buffer compo-sition and detergent concentration. Two different types of cytochromeb559assays were performed. The absolute heme content ineachpreparationwas obtainedusing theoxidized-minus-reduced difference extinction coefficient of cyto-chrome b559 at 559 nm. ...

6p fptmusic 16-04-2013 35 2   Download

Feruloyl esterases hydrolyse phenolic groups involved in the cross-linking of arabinoxylan to other polymeric structures. This is important for open-ing the cell wall structure making material more accessible to glycoside hydrolases. Here we describe the crystal structure of inactive S133A mutant of type-A feruloyl esterase fromAspergillus niger(AnFaeA) in complex with a feruloylated trisaccharide substrate.

10p fptmusic 11-04-2013 44 1   Download

For 30 years, the field of medical device technology has struggled to identify the specifications for optimal biocompatibility. For the vast majority of devices, clinical experience has eventually confirmed that the best performance is achieved when biocom-patibility is equated with biological safety that is materials are selected on the basis of maximizing bioinertness and minimizing toxicity and irritation.

7p inspiron33 26-03-2013 55 5   Download

The nano-scale spatial organization of metallic and other inorganic materi-als into 1D objects is a key task in nanotechnology. Nano-scale fibers and tubes are very useful templates for such organization because of their inherent 1D organization. Fibrillar biological molecules and biomolecular assemblies are excellent physical supports on which to organize the inor-ganic material.

6p inspiron33 23-03-2013 41 4   Download

NMR studies on the interaction of sugars with the C-terminal domain of an R-type lectin from the earthworm Lumbricus terrestris Hikaru Hemmi1, Atsushi Kuno2, Shigeyasu Ito2,3, Ryuichiro Suzuki2,3, Tsunemi Hasegawa3 and Jun Hirabayashi2 1 National Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan 2 Research Center for Medical Glycoscience, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan 3 Department of Material and Biological Chemistry, Yamagata University, Yamagata, Japan Keywords earthworm Lumbricus ...

11p viettel02 22-02-2013 78 3   Download

The retroviral life cycle requires that significant amounts of RNA remain unspliced and perform several functions in the cytoplasm. Thus, the full-length RNA serves both the viral genetic material that will be encapsulated in viral particles and the mRNA encoding structural and enzymatic pro-teins required for viral replication.

10p mobifone23 18-01-2013 40 3   Download

Type IV secretion systems (T4SS) are macromolecular assemblies used by bacteria to transport material across their membranes. T4SS are generally composed of a set of twelve proteins (VirB1–11 and VirD4). This repre-sents a dynamic machine powered by three ATPases.

10p cosis54 05-01-2013 44 5   Download

Living processes consists almost entirely of biochemical reactions. Without catalysts these reactions would not occur fast enough to sustain life.How does an enzyme do this? ------ because enzyme is a catalytic protein-a chemical agent that changes the rate of a reaction without being consumed by the reaction

18p zingzing09 21-10-2012 69 6   Download

FC01 CELLS Cells are tiny building blocks that make up all living things. Cells are so small that you need a microscope to see them. ANIMAL CELL This is the control centre of the cell. It contains chromosomes with DNA instructions for all the cell’s activities, including instructions to make new cells. This is a jelly like substance, in which many of the cell’s activities, e.g. respiration and protein synthesis occur. This is a thin skin around the cell. It is selectivelt permeable, controlling what goes in and out of the cell....

9p 3113513 05-10-2012 108 9   Download

Background: To be useful for genetic display of foreign peptides a viral coat protein must tolerate peptide insertions without major disruption of subunit folding and capsid assembly. The folding of the coat protein of RNA phage MS2 does not normally tolerate insertions in its AB-loop, but an engineered single-chain dimer readily accepts them as long as they are restricted to one of its two halves.

0p toshiba25 08-12-2011 48 4   Download