Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: January 2013
Authors: Jin Li, Xiang Yang Qin, Ying Yu
The study of Xiong Benhai etc adopted animal identification, intelligent personal digital assistant (PDA) reading and writing, general packet radio service (GPRS), and other information technologies, proposed a pork tracking and traceability infrastructure based on pork production substrate flow and data flow, designs the metadata structure and related databases for farming, slaughtering, and retailing sector based on intensive pig farming and small hold pig farming, developed three different data-recording systems, and finally established a public network platform for the information inquiry in light of ‘the administrative rules on identification and rearing files for animal and poultry’ in China [5].
The B/S (Browser/Server) structure was used to put the management system on the internet, which implemented the management of beef traceability system via internet and made the beef traceability system be more networking and popularizing [25].
Based on analyzing agricultural products traceability and investigating the producing enterprises of agricultural products, agricultural products archive management system (FPAMS) with B/S (Browser/Server) structure was founded by using database technology [26].
FPAMS had characteristics of reasonable structure, high security and handy manipulation, so it will be applied widely.
Li, Application of LIBS technology to the rapid measure of heavy metal contamination in soils, Progress in Chemistry. 20 (2008) 1165-1171
Online since: February 2014
Authors: Maria P. Christina, Nanny Kartini Oekar, Wahyu W. Perdana, Nugrahaning Wuri Hakiki, Isti Daruwati
The M41S includes members having uniform pore structures and characterized by narrow pore size distributions, tune able from 2 to10 nm and large specific surface areas (>1000 m2/g) [10].
Molecular Structure of M41S Material (A) and M41S-NH2 (B) Figure 2.The Shape of M41S nanomaterial (A) and the pore shape (B) observed using Transmission Electron Microscopy (TEM) This research was focused on labeling of M41S-NH2with technetium-99m (99mTc) radionuclide which has a similar chemical properties with rhenium-188 (188Re) as a preliminary experiment.
There are two approaches to labeling nanomaterial by using EDTA and PYP, conventional ligand exchange partners and weak chelator [16].Proposed structure of 99mTc-EDTAand 99mTc-PYP (Fig. 3) showed EDTA and PYP co-ligand donates lone pairs of electrons to form coordinate covalent bonds with reduced 99mTc.
Proposed structure of 99mTc-EDTA (A) and 99mTc-PYP (B) [17,18] Materials and Methods Materials The materials to carry out this research were M41S-NH2 (synthesized by Polytechnic Institute of Nuclear Technology, Yogyakarta), technetium-99m from 99Mo/99mTc generator (PT BATAN Teknologi, Indonesia), ethylene diamine tetraacetic acid (Analar BDH Limited Poole England), sodium pyrophosphate (Sigma Aldrich), tin (II) chloride dehydrate (Sigma Aldrich), acetone (E.
Journal of The Korean Nuclear Society. 12(1):19-28 [19] Yewle, Jivan N., 2012, Bifunctional Bisphosphonates For Delivering Biomolecules To Bone, Theses and Dissertations-Chemistry, University of Kentucky.
Online since: October 2013
Authors: Assed Naked Haddad, Ana Catarina Jorge Evangelista, Karina Condeixa, Dieter Thomas Boer, Michele Sedrez
Ansems e Lightart (2002) shown three methodologies for assessing quality of LCI: suggested by NBR 14040:2001, presented by the Society of Environmental Toxicology and Chemistry (SETAC), and presented by NUSAP [24]
· The methodology described in ISO 14040:2001: Principles and Structure recommends the indicators: time coverage, geographical coverage, technology, completeness, representativeness of the data, consistency and representativeness of the method used, the source and its representativeness, and uncertainty information [7,24]
· SETAC works with quantitative indicators (of accuracy, completeness, distribution, homogeneity, structures correlation and uncertainty) and qualitative indicators (of consistency, applicability and suitability, compatibility, anomalies identification, reproducibility and accessibility or availability)
Finally, we performed a critical analysis of results, highlighting the critical points in the structure of these works.
Marc Hoit (Eds.), Structures Congress 2011 © ASCE 2011, American Society of Civil Engineers, Las Vegas (2011), pp. 495–506
Online since: November 2017
Authors: Shu Huei Hsieh, Wen Jauh Chen
For pure TiO2 nanoparticle, its crystal structure is anatase form at temperature not exceeding 500 oC, and would partly transform into rutile when temperature exceeds 550 oC and the amount of rutile increases with increase in temperature.
Pure TiO2 has anatase crystal structure when calcinations temperature T ≦ 500 oC and partly becomes rutile form when T ≧ 500 oC.
Lieber, Atomic Structure and Electronic Properties of Single-walled Carbon Nanotubes, Nature(London) 391 (1998)62
Electronic Structure of Atomically Resolved Carbon Nanotubes, Nature (London) 391 (1998)59
Brinker, G.W.Scherer, Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing, 1st ed.; Academic Press.
Online since: January 2013
Authors: Su Qin Liu, Ying Liang
Results and Discussions Crystal Structure XRD was used to investigate the changes of phase structure of the anodic TiO2 films before and after hydrothermal treatment.
Fig. 2 shows the effects of hydrothermal time on phase structures of TiO2 films prepared at 150 oC.
The sol-gel formation made the rearrangement of arbitrary bonds in the precipitation process toward the defined structure of anatase.
Sung, Formation and mechanistic study of self-ordered TiO2 nanotubes on Ti substrate, Journal of industrial and engineering Chemistry. 14 (2008) 52-59
Online since: March 2020
Authors: S.N. Borychev, N.V. Byshov, I.S. Arapov, I.A. Uspenskiy, D.G. Churilov, Yu.A. Stekolnikov, S.D. Polischuk
Chromium coatings in a low-concentration electrolyte with additives of organic substances obtained in non-stationary deposition modes do not contain unstable modifications of the crystalline chromium structure, they are characterized by the absence of layering, in contrast to the permanent-current deposition modes, which makes possible to refuse the subsequent heat treatment of parts to improve physical-mechanical characteristics.
The adhesion of a chromium coating obtained from a low-concentration electrolyte with gloss-forming agents is not inferior to that of universal solutions (Figure 4), which is due to the production of less coarse-grained and denser structures of chromium sediment.
Micro structure of the chrome plating surface: (a) - at 35-fold magnification; (b) - at 370-fold magnification Conclusion Pulsed electrolysis makes possible to control the composition of the components of chromic alloys, iron coatings and to obtain coatings having desired properties from a single electrolyte.
In general, the formation of chromium coatings with a particular structure is determined by electrolysis conditions (temperature, density and type of current, the concentration of the CV additive) determining the spectrum of the physical-mechanical properties of the surface layers of the reconditioned parts and the timing of their subsequent operation after repair.
Chemistry 83(5) (2010) 789-793
Online since: March 2017
Authors: Manish Kumar, Franz Renz, Daniel Unruh, Ralf Sindelar
Preparation of Magnetic Polylactic Acid Fiber Mats by Electrospinning MANISH Kumar1,2, a, DANIEL Unruh3, b, RALF Sindelar2, c and FRANZ Renz3, d* 1Laboratorium of Nano and Quantum Engineering, Leibniz Universität Hannover, Schneiderberg 39, 30167 Hannover, Germany 2Faculty II, University of Applied Science and Arts, Ricklinger Stadtweg 120, 30459 Hannover, Germany 3Institute of Inorganic Chemistry, Leibniz Universität Hannover, Callinstraße 9, 30167 Hannover, Germany amanish.kumar@lnqe.uni-hannover.de, bdaniel.unruh@acd.uni-hannover.de, cralf.sindelar@hs-hannover.de, dfranz.renz@acd.uni-hannover.de Keywords: Electrospinning, Poly(lactic acid), fiber composite, magnetic properties.
Poly(lactic acid) electrospun mats are porous and cylindrical [14] and it is well known that they are hydrophobic [15], because of the presence of methyl groups in its chemical structure.
The porous structure is induced by phase separation, resulting from the rapid evaporation of the solvent (CHCl3) during electrospinning.
Campos, Structure of poly(lactic-acid) PLA nanofibers scaffolds prepared by electrospinning, IOP Conf.
Ulman, Formation and Structure of Self-Assembled Monolayers, Chem.
Online since: October 2014
Authors: Qing Dong Zhong, Qiong Yu Zhou, Quoc Binh Bui, Xi Shi, Dan Ji
Introduction Corrosion protection of steel structures exposed to sea environment is necessary to protect them from damage.
The application or organic coatings is the most economical method which was employed to protect steel structures against corrosion [1,2].
As far as exfoliated structure is concerned, no more diffraction peaks was visible in those XRD diffractograms.
Berger, R.F.Wint New Concepts of Coating for Protection of Steel Structures.
Materials Chemistry and Physics, Vol. 130, 2011, p. 1208
Online since: March 2023
Authors: Ivetta A. Varyan, Maria V. Podzorova, M.V. Nachevskiy, L.S. Shibryaeva
Depending on the stereochemical structure and thermal history, polylactide can be either semi-crystalline or completely amorphous and can exhibit crystalline polymorphism [3].
It was found that the degradation of polymers occurs as a result of the destruction of their crystal structures.
Tertyshnaya, Environmentally friendly films based on poly(3-hydroxybutyrate) and poly(lactic acid): a review, Russian Journal of Physical Chemistry B.
Nikolaeva, Influence of ultraviolet on polylactide degradation, in International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures, AIP Conference Proceedings. 1909 (2017) 020173
Online since: November 2015
Authors: P. Ponsurya, Shahid Hussain, B.H. Abbas Shahul Hameed, R. Perumalsamy, R. Thirumamagal, M. Jayachandran, A. Ayeshamariam
Graphene is scientifically and commercially important because of its unique molecular structure which is monoatomic in thickness, rigorously two-dimensional and highly conjugated.
Therefore, tuning the surface chemistry of Graphene materials may be the most primary and direct approach to adjust Graphene materials for different purposes.
The powdered particles of diamond were obtained when as-prepared graphite powder was annealed at 1350 ºC, which was in well match with JCPDS file number (JCPDS 89-3439) cubic structure of lattice constant a = 3.567 A0, the predominant peak is 111 plane with minimum intensity of the spectrum.
The observed transmittance surveyed that the doping process has no effect on the structure arrangement [15].
The formation of this nanograined powder with hexagonal and cubic structure was observed.