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Exibindo 1-30 of 49 resultados para "59-23-4" no prazo de Conteúdo do site
Protocolo do ensaio de MTT para viabilidade e proliferação celular
Protocolo do ensaio de MTT para medir a viabilidade e proliferação celular, bem como a citotoxicidade. Instruções para o preparo do reagente MTT e exemplos de aplicações.
How to Make and Use Percoll Gradients
To prepare a Percoll gradient, the osmolality of Percoll must be adjusted with saline or cell culture medium to make Percoll isotonic with physiological salt solutions.
The Effect of Container Materials on Production of Light Induced Off-Flavors in Milk – A Study Using SPME-GC-MS
Various plastics used as barriers to the production of off-flavors in light exposed milk were examined using HS-SPME with a new Carboxen®/PDMS coated Nitinol fiber followed by GC-MS analysis allowing detection of low MW analytes at levels <1 ng/mL.
LRA (Lipid Removal Agent) for Biopharmaceutical Production
Lipids are naturally-occurring hydrocarbons that are poorly soluble in water and soluble in non-polar solvents such as ether and chloroform.
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling
Measurement of acetic acid vapor in the workplace using passive sampling SPME and on-fiber derivatization with 1-pyrenyldiazomethane: Comparison with active sampling.
Digital PCR
Digital PCR is an end-point PCR method that is used for absolute quantification and for analysis of minority sequences against a background of similar majority sequences, e.g., quantification of somatic mutations.
Imprint® Chromatin Immunoprecipitation Kit (CHP1) Protocol
The Sigma Imprint Chromatin Immunoprecipitation Kit uses a plate based system to allow rapid ChIP assays in a high throughput format
Overcoming Aggregation in Solid-phase Peptide Synthesis
The ease of assembly of a given peptide sequence is hard to predict, which makes peptide synthesis challenging. Review methods and reagents for avoiding aggregation in solid-phase peptide synthesis.
Degradable Poly(ethylene glycol) Hydrogels for 2D and 3D Cell Culture
Progress in biotechnology fields such as tissue engineering and drug delivery is accompanied by an increasing demand for diverse functional biomaterials. One class of biomaterials that has been the subject of intense research interest is hydrogels, because they closely mimic
Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge
The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer
Vasopressin and Oxytocin Receptors
Sigma-Aldrich offers many products related to vasopressin and oxytocin receptors for your research needs.
Properties of Mononuclear Cells Isolated by the Ficoll-Paque Method
The effects of the mononuclear cell separation method described by Bøyum procedure are noted below, since research situations may arise in which they are significant.
Periodic Table of the Elements
Download the Periodic Table of the Elements with names, atomic mass and number in printable .pdf and image format. Use the periodic table chart by element names in alphabetical order for quick research, reference and lab use.
Over the past several years, the Pd-catalyzed cross-coupling of silicon compounds (Hiyama coupling) has rapidly gained acceptance as a suitable alternative to more commonly used methods such as Stille (Sn), Kumada (Mg), Suzuki (B), and Negishi cross-couplings (Zn).
Recommended Standard Method for Isolating Mononuclear Cells
The following procedure has been evaluated with Ficoll-Paque PLUS and is recommended for separation of normal blood samples for maximum reproducibility.
Dextran and Related Polysaccharides
Learn about C6H10O6 or dextran formation, classes and naming. Dextrans are polysaccharides with molecular weights ≥1,000 Dalton, which have a linear backbone of α-linked d-glucopyranosyl repeating units.
Conducting Polymer Device Applications
The application of conducting polymers at the interface with biology is an exciting new trend in organic electronics research.
Micro- and Nanofabricated Biomaterials for the Study of Cells and Microtissues
Biomaterials science involves the design and fabrication of smart materials for studying, directing, or mimicking biology. For successful integration of biomaterials in biological research, a meaningful understanding of biological systems is required.
Controlled Fabrication Methods for Tissue Engineering Constructs
Highlighting existing and novel fabrication methods for both, solid and hydrogel-based scaffold for tissue engineering applications.
Inorganic Nanoparticles — Unique Properties and Novel Applications
This article highlights the rich variety of structures and properties that can be realized in materials based on inorganic nanoparticles, and points to outstanding fundamental questions raised in controlling these properties.
Recent Trends in Self-Healing Soft Electronic Materials and Devices
Dr. Tan and researcher introduce recent trends in Self-healing Soft Electronic Materials and Devices. The emergence of smart, functional SHPs will be highly beneficial to the advancement of the next-generation self-healing soft electronic devices. Autonomously self-healing devices could help to
Atomic Layer Deposition (ALD) — A Versatile Tool for Nanostructuring
Some of the most innovative uses for atomic layer deposition (ALD) include synthesis of novel structures, area-selective deposition of materials, low-temperature ALD deposition, and temperature-sensitive subtrates.
Lysing Enzymes
Enzymes provide a non-mechanical method for cell lysis and protoplast preparation. It may seem like a simple process to throw in your enzyme, stick your tube in the water-bath and walk away, but what is actually going on in that
Energy Harvesting Using Lead Zirconium Titanate-Based Ceramic Nanowires
Among various ceramics, one-dimensional (1-D) piezoelectric ceramics have attracted significant scientific attention for use in energy harvesting.
Poly(ethylene glycol) (PEG) and Synthetic PEG Derivatives for Tissue Engineering and Cell Delivery
Highlighting new synthetic modifications of PEG to improve the mechanical properties and degradation of resulting hydrogels in tissue engineering applications.
Delivery of Nucleic Acids Using Polymers
This review will focus on the sub-sector of drug delivery concerning the delivery of nucleic acids, with a particular focus on poly(ethyleneimine).
Electrospun Nanofibers for Drug Delivery Systems
Local delivery of bioactive molecules using an implantable device can decrease the amount of drug dose required as well as non-target site toxicities compared to oral or systemic drug administration.
Pressure-Temperature Calculator for Solvents
Use the calculator to determine the boiling point or pressure of solvents based on the Antoine Equation and see solvent attributes. View a list of products based on the solvent CAS number.
Virus Cultivation
Cell lines for vaccine production and cultivation of SARS CoV-2 and other viruses. Primary, human diploid, and continuous culture cell lines for the propagation of viruses and virus-based vaccines.
Graphene and Other 2D Crystals for Rechargeable Batteries
Advanced technologies for energy conversion and storage are widely sought after for their potential to improve consumer and electronic device performance as well as for the prospect of reducing the societal and environmental impact of energy generation.
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