BACKGROUND The accuracy of homocysteine (Hcy) results is currently compromised by the requirement to separate the plasma within 1 h of sample collection. We studied the effect of temperature on the stability of plasma Hcy over a 72-h time course in blood collected into evacuated tubes containing either EDTA alone or both EDTA and 3-deazaadenosine (3DA). METHODS We recruited 100 volunteers, in...

This paper presents an optimization strategy for supermarket refrigeration systems. It deals with one special condition when the extremely high outdoor temperature causes the compressor to saturate, and work at its maximum capacity. In a traditional control, refrigerated foodstuffs inside display cabinets will suffer from a consequential higher temperature storage, which is detrimental to the f...

Oral suspensions of antibiotics are mainly available as dry powders for reconstitution. Many reconstituted antibiotic suspension is to be kept refrigerated in order to get the optimal benefit from the drug. However, many patients do not keep to the specified storage conditions for different reasons like no refrigerator and irregular power supply that may result in various degrees of degradation...

Immediate culture or refrigeration of urine is recommended, but not always practical. Therefore, we evaluated the Becton-Dickinson Urine Culture Kit containing a boric acid-glycerol-sodium formate preservative in a study of 1,000 clinical urine specimens. Each specimen was cultured a total of four times by the surface streak technique with a 0.001-ml calibrated loop. After an initial reference ...

Gabapentin is used with other medications to control and prevent seizures. It is also used to treat neuropathic pain following surgery due to shingles. Gabapentin comes in many different forms, including capsules, tablets, and oral solutions. Some patients, however, cannot use oral solutions containing alcohol or sorbitol. The objective of this study was to determine the stability of gabapentin...

The aim of this study was to evaluate the stability of stock solutions of a variety of illegal and medicinal drugs, important in forensic analysis, when stored refrigerated or at ambient temperature compared to solutions stored in a freezer. Stock solutions in methanol, acetonitrile, or a mixture of acetonitrile/methanol were transferred to autosampler vials and analyzed after storage for one ...

We observed the influences of low-temperature storage of the feline epididymis on the epididymal semen qualities before and after cryopreservation to identify the optimal duration for low-temperature storage of the epididymis. After excision, the feline epididymis was stored at 4 degrees C for 0-72 hr and then subjected to epididymal sperm collection. When sperm from the refrigerated cauda epid...

The purpose of this study is evaluating energy consumption and the indoor thermal environment grocery stores, which using frozen refrigerated display cases, by taking temperature distribution into consideration. In report, store CFD models can evaluate were adopted to influence, made or ventilation flux altering, on stores. results indicate that mixture air, no matter affected outside influx sp...

Refrigerated processed foods of extended durability such as cook-chill and sous-vide foods rely on a minimal heat treatment at 70 to 95°C and then storage at a refrigeration temperature for safety and preservation. These foods are not sterile and are intended to have an extended shelf life, often up to 42 days. The principal microbiological hazard in foods of this type is growth of and toxin pr...