Weed control by crops through growth suppressive root exudates is a promising alternative to herbicides. Buckwheat (Fagopyrum esculentum) is known for its weed suppression and redroot pigweed (Amaranthus retroflexus) control is probably partly due to allelopathic root exudates. This work studies whether other weeds are also suppressed by buckwheat and if the presence of weeds is necessary to in...

PURPOSE To describe the spectral-domain optical coherence tomography (SD-OCT) findings in a case of Coats' disease, with emphasis on the intraretinal exudates. METHODS Case report of a 4.5-year-old girl who presented with total exudative retinal detachment and organized exudates in a stellate configuration. SD-OCT was performed before and after treatment, which included surgical drainage of s...

The differentiation of pleural effusions as exudates or transudates is the first step in the diagnosis of pleural effusions. The aim of this study was to evaluate the value of adenosine deaminase (ADA) concentration in the pleural effusions for differentiating exudates from transudates. Sixty indoor patients, admitted to our hospital, having pleural effusions and suffering from varying etiologi...

A modified differential filtration was used to measure extracellular release of primary products by natural phytoplankton populations and subsequent incorporation of these products by bacteria. Water samples were incubated with I4C labelled bicarbonate for 6 h and 24 h , respectively. A time course experiment showed that 6 h are sufficient for attaining an approximate isotopic equilibrium betwe...

OBJECTIVE To propose a new classification criterion for the differentiation between pleural exudates and transudates-quantifying total proteins in pleural fluid (TP-PF) and lactate dehydrogenase in pleural fluid (LDH-PF) exclusively-as well as to compare this new criterion with the classical criterion in terms of diagnostic yield. METHODS This was an observational, cross-sectional study with ...

Stimulation of hatching of a tobacco cyst nematode (Globodera tabacum solanacearum) by root exudates from resistant NC 567 and susceptible K 326 cultivars of flue-cured tobacco, Nicotiana tabacum, was investigated. Root exudates were collected by soaking seedlings in deionized water for 2 hours at 22 degrees C in the dark. Fifteen mature and uniformly sized cysts were exposed at 15, 20, or 25 d...

A comparison was made of water-soluble root exudates and extracts of Sorghum vulgare Pers. grown under two levels of P nutrition. An increase in P nutrition significantly decreased the concentration of carbohydrates, carboxylic acids, and amino acids in exudates, and decreased the concentration of carboxylic acids in extracts. Higher P did not affect the relative proportions of specific carboxy...

BACKGROUND The management strategy to be adopted in pleural effusion depends on whether an effusion is a transudate or exudate. OBJECTIVE To evaluate the usefulness of pleural fluid cholesterol and/or total protein measurements for differentiating between exudates and transudates, and to compare it with Light's criteria. METHODS In this prospective study 60 patients with pleural effusion we...

Three mosquito species, Culex tarsalis Coquillett, Culex quinquefasciatus Say and Aedes aegypti L. (Diptera: Culicidae), were examined in laboratory binary choice experiments to investigate whether fish exudates from the mosquitofish, Gambusia affinis (Baird & Girard) (Cyprinodontiformes: Poecilliidae), deter oviposition and whether the responses of these mosquito species to fish exudates in ov...

The transport of cefmenoxime,a cephalosporin antibiotic,into three kinds of exudates (exudate from excoriated skin,exudate from burn wounds,and burn blister fluid)from blood was studied on 37 burn patients after they were given an intravenous bolus of 50mg cefmenoxime per kg body weight.Concentrations of cefmenoxime in serum and in the above exudates or fluid were determined by bioassay.Concent...