one of the most important concerns in tehran municipal landfill is the production of leachate and its potential for water resources pollution, this study was undertaken to examine feasibility of biological and physico/chemical treating of high-strength landfill leachate that was collected from tehran municipal landfill. average cod of the leachate in aerobic submerged membrane bioreactor is 68...

Gain-cell-based embedded dynamic random-access memory (DRAMs) are a potential high-density alternative to mainstream static random-access memory (SRAM). However, the limited data retention time of these dynamic bitcells results in the need for power-consuming periodic refresh cycles. This Letter measures the impact of body biasing as a control factor to improve the retention time of a 2 kb memo...

Johnson Haynes Jr., and Boniface Obiako. Activated polymorphonuclear cells increase sickle red blood cell retention in lung: role of phospholipids. Am J Physiol Heart Circ Physiol 282: H122–H130, 2002.—This study investigates the role of the activated polymorphonuclear cell (APMN) products on sickle red blood cell (SRBC) retention/adherence in the pulmonary circulation. Isolated rat lungs were ...

A method was developed to calculate the second dimension retention index of comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC×GC/TOF-MS) data using n-alkanes as reference compounds. The retention times of the C(7)-C(31) alkanes acquired during 24 isothermal experiments cover the 0-6s retention time area in the second dimension retention time space, which make...

This study investigated the birth of a brownbanded bamboo shark Chiloscyllium punctatum at the Steinhart Aquarium. Genetic analyses suggest this is the longest documented case of sperm storage for any species of shark (45 months).

A model of order effects developed by Miller and Campbell (1959) predicts more recency with intervals between arguments and less recency with a delay of the posttest. To test the model, this study used 320 undergraduates as Ss, periods of 1 wk. as intervals and delays, and jury-trial excerpts as materials. Retention data supported the model completely. Opinion data showed less recency with dela...

The carcinogenic activities of s.c. administered N-hydroxy-2-acetylaminofluorene (N-hydroxy-AAF) and a variety of its metal chelates were investigated with reference to the time of exposure of the tissue to the compounds. No tumors were obtained at the sites of 4 injections of N-hydroxy-AAF (3.2 mg/injection), but 4 and 16 of 20 rats developed sarcomas at the sites of 8 and 16 injections, respe...

Morphological characteristics of the forestomach, as well as reports of a natural diet that mostly excludes monocots, suggest that dikdiks (Madoqua spp.), among smallest extant ruminants, should have a 'moose-type' forestomach physiology characterised by a low degree of selective particle retention. We tested this assumption in a series of feeding experiments with 12 adult Phillip's dikdiks (Ma...

This study investigates the role of the activated polymorphonuclear cell (APMN) products on sickle red blood cell (SRBC) retention/adherence in the pulmonary circulation. Isolated rat lungs were perfused with (51)Cr-labeled normal RBCs (NRBC) or SRBCs (10% hematocrit) suspensions +/- PMNs. Specific activities of lung and perfusate were measured and retention (the number of SRBC/g lung) was calc...