A simple technique has been developed with which five serum specimens can be chromatographed at one time and concentrated immunoglobulin M fractions can be obtained without using fraction collectors and ultraviolet monitors. When applied to the detection of rubella immunoglobulin M antibody, this technique gave results comparable to the sucrose gradient centrifugation method.

Human identification from DNA is typically based on 13 short-tandem repeat (STR) alleles. Commercial kits used in forensic casework rely on the detection of these alleles in DNA samples acquired from an individual. However, the process itself is slow (it can take up to 2 days when conducting a laboratory analysis or 1 hour when using Rapid DNA systems) and has been designed to operate on pristi...

Determination of drug residues in food is of great importance due to their toxicity. Long-term exposure with low level of drug residues could be important, especially in children. Based on document study, oxytetracycline (OTC) is a prophylaxis and treatment agent for great number of diseases and possesses a broad spectrum activity against many pathogenic organisms and can be toxic or cause alle...

Skin weathering and photoaging of the balding scalp have not attracted much investigative attention so far. However, the concept of field cancerization, in particular actinic field carcinogenesis, is likely applicable to this part of the body. The aim of the study was to finetune the epidermal actinic changes present on hairlessness scalp. The ultraviolet light-enhanced visualization (ULEV) met...

a sensitive high performance liquid chromathography (hplc) analytical procedure was developed for the quantitive determination of trimethoprim (tm* and sulphamethoxazole (sm) in commercial dosage forms. c18 analytical column (stainless steel, 25 cm * 4.6 mm i.d.) was packed with 5-*m particles of the reversed phase material and used for assays. mobile phase containing 0.025 m sodium phosphate a...

The repair of thymine dimers induced by irradiation with ultraviolet light was detected in the DNA of human fibroblast cells, HeLa, but not in the DNA of rat glial or rat pituitary cells. Thymine dimers were detected in the DNA of bacterial and mammalian cells after irradiation with levels of light which are biologically significant, as little as 50 ergs per mmz. The detection of thymine dimers...

Reproduction in plants often requires animal vectors. Fruit and flower colors are traditionally viewed as an adaptation to facilitate detection for pollinators and seed dispersers. This longstanding hypothesis predicts that fruits are easier to detect against their own leaves compared with those of different species. We tested this hypothesis by analyzing the chromatic contrasts between 130 bir...

Widespread detection of pharmaceutical compounds in water environment has been a serious concern recently, while conventional sewage treatments are ineffective for their elimination. But, advanced oxidation techniques are very promising to remove varieties of organic contaminants in water. This research aims to elucidate oxidation potentials of sixteen commonly used pharmaceutical compounds in ...

The performance of graphene field-effect transistors is limited by the drastically reduced carrier mobility of graphene on silicon dioxide (SiO2) substrates. Here we demonstrate an ultrasensitive ultraviolet (UV) phototransistor featuring an organic self-assembled monolayer (SAM) sandwiched between an inorganic ZnO quantum dots decorated graphene channel and a conventional SiO2/Si substrate. Re...