超声辅助挤出制备NR/碳纳米管纳米复合材料（1）
从上世纪80年代开始研究超声辅助加工聚合物及其复合材料,后来发现该技术可用于橡胶的脱硫。之后,采用该方法对许多硫化胶进行了脱硫来回收橡胶材料。还进一步研究了超声波处理造成的纯橡胶如IR、IIR、SBR、BR和EPDM的结构变化。研究表明,对于BBR、BR和EPDM,在超声辅助挤出过程中橡胶分子链断裂,同时形成网络和支化结构。已有研究采用超声辅助挤出或混炼方法来制备聚合物纳米复合材料,
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Test Methods for Flexible Cellular Materials Made From Olefin Polymers
Significance and Use 5.1 The test procedures provide a standard method of obtaining data for research and development, quality control, acceptance and rejection under specifications, and special purposes. 5.2 The data obtained by these test methods are a
Effect of Heat Treatment on Properties of LGJW20 Steel
This paper prepared steel composites LGJW20 containing 20 % tungsten carbide particles by centrifugal casting method and its substrate material was GCr15 bearing steel. In this study, the material was treated by heat treatment. The metallographic analysis, XRD and SEM, and the performance of the alloy was represented…
Effect of potassium phosphate on the thermal, pasting, and flowing properties of chickpea and potato starches
The effect of potassium phosphate on potato and chickpea (CP) starches pasting, rheological, and textural properties were investigated using differential scanning calorimetry, rapid visco-analyser (RVA), viscometer, and texture analyser. Starch parameters were determined in 0.5, 1.0, and 1.5 M potassium phosphate at p…
Swelling and Dissolution Mechanism of Poly(paraphenylene benzobisoxazole) Fibers in Poly Phosphoric Acid
Swelling and dissolution properties of (poly-paraphenylene benzobisoxazole) (PBO) fibers in (poly phosphoric acid) solutions were studied in this paper. The swelling and dissolution process was observed by light microscope and SEM. Depending on concentration of polyphosphoric acid solutions and swelling time, uniform…
Contents: (Adv. Funct. Mater. 3/2014)
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Biological Sciences is a free peer-reviewed, open access journal that provides rapid publication of articles in all fields concerning Biological Sciences and related fields.The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new iss…
Kapuziner
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Screening for Antibacterial Active Fractions from Kummerowia striata
To screen the antibacterial effective fractions from the extract of Kummerowia striata and further mechanism of antibacterial activity. The effective fractions were screened with AB-8 macroporous resins and analyzed by high performance liquid chromatography, Minimal inhibitory concentrations (MICs) of the extract agai…
Cover Picture: ZAAC ‐ Journal of Inorganic and General Chemistry 1/2014
Although CrO3 and chromate(VI) salts are familiar laboratory chemicals, most compounds containing CrVI or CrV are highly reactive and easily reduced, and those of CrV are prone to disproportionation. As a result although CrO2Cl2 was first described by Berzelius (1824) and its ability to activate C–H bonds reported by…
Ni/TiO2 Catalysts Supported with Al2O3 Over CO2 Reforming
The 5 wt % Ni/TiO2-Al2O3 xerogels catalyst was prepared by the sol-gel synthesis of titanium n-butoxide in methanol with nickel and aluminum. X-Ray diffraction, TG/DTA and SEM were used to characterize the function of addition aluminum to Ni/TiO2 catalyst. The role of aluminum addition promotes the formation of large…
Determination of Half-life of Dissolution Process of Oxaliplatin in DMSO
The enthalpies of dissolution for oxaliplatin in dimethyl sulfoxide were measured using a RD496-CK2000 calve microcalorimeter at 309.65 K under atmospheric pressure. Differential enthalpies and molar enthalpies were determined for oxaliplatin in dimethyl sulfoxide, then the relationship of the heat effect of each proc…
Arcam acquires titanium powder manufacturer
It is demonstrated for the first time that a nanoscale superlattice with a DO22 structure can precipitate in an Ni–Cr–W alloy by means of a simple ageing treatment at 700 °C. The existence of tungsten in the superalloy stabilizes the DO22 superlattices, which are transient metastable phases in Ni–Cr–Mo alloy. Because…
Synthesis and bioactivities of silver nanoparticles capped with 5-Amino-ß-resorcylic acid hydrochloride dihydrate
Conjugated and drug loaded silver nanoparticles are getting an increased attention for various biomedical applications. Nanoconjugates showed significant enhancement in biological activity in comparison to free drug molecules. In this perspective, we report the synthesis of bioactive silver capped with 5-Amino-?-resor…
Guide for In-Service Annealing of Light-Water Moderated Nuclear Reactor Vessels
Significance and Use 3.1 Reactor vessels made of ferritic steels are designed with the expectation of progressive changes in material properties resulting from in-service neutron exposure. In the operation of light-water-cooled nuclear power reactors, cha
Test Method for Reaction Induction Time by Thermal Analysis
Significance and Use 5.1 This test method measures the time to extrapolated onset of an exothermic reaction under constant temperature (isothermal) conditions for reactions which have an induction period, for example, those which are catalytic, autocataly
Graphical Abstract
Review: This review article gives an overview of various nanomaterials that were preferably synthesized by microfluidic synthesis strategies; special focus is on parameter screening and tuning methods, which are conducted particularly well by means of microfluidics.
Unintentional Nitrogen Doping in ZnO Nanowires Revealed by Electron Paramagnetic Resonance Spectroscopy
Unintentional Nitrogen Doping in ZnO Nanowires Revealed by Electron Paramagnetic Resonance Spectroscopy
Iron(III) Supported g-Al2O3 Catalyst for Hydroxylation of Benzene
The liquid-phase catalytic oxidation of benzene to directly produce phenol was studied under microwave irradiation using FeCl3/-Al2O3 as the catalysts prepared by the microwave-impregnated method. The catalysts were characterized by XRD and N2 adsorption techniques. The results indicated that the performance of the ca…
Upconversion SuperDots
SuperDots are the bright nanocrystals doped with lanthanide ions. The up-converting process relies on the sequential absorption of two or more photons in infrared to generate a photon in visible for sensing, display and solar cells.