After oneand two-colour ps-excitation the transient absorption of rose bengal, erythrosin B and eosin Y in the spectral range from 450 to 670 nm was probed using picosecond continuum pulses generated in H2O—D 2 O mixture. Our experiments showed for all dyes a high T1—Tn absorption signal above 590 nm where no ground state absorption occurs. These excited triplet states can be effectively popula...

The industrial waste water containing the various dyes is responsible for water pollution, due to their carcinogenic behaviour. Lots of investigations reported that 10-12% of dyes are used every year in textile industries such as Rose Bengal, Victoria blue, Thymol blue, Caramine, Indigo Red, Red 120, Rhodamine B, Methylene Blue, Eriochrome Black-T (EBT) [1-4] of which are major portion (20%) lo...

Despite the endemicity of brucellosis in Nigeria, reports on equine brucellosis are rare. The Rose Bengal Plate Test (RBPT) was used to determine the serologic prevalence of Brucella abortus antibodies amongst 75 horses from three stables in two States of northern Nigeria. The highest prevalence (22.7%) was recorded in stable C located in Plateau State and the lowest (6.7%) was found in stable ...

[3H]P1075 binding to membrane preparations of rabbit skeletal muscle were observed in the presence of nucleotide triphosphates or diphosphates but not AMP, cAMP, adenosine, tripolyphosphate, or pyrophosphate. Nonhydrolyzable or poorly hydrolyzable ATP analogs inhibited MgATP-supported binding. The EC50 value for MgATP-supported binding (0.4 mM) was decreased approximately 10-fold in the presenc...

Rose bengal plate test (RBPT) antigens from Brucella melitensis and Brucella suis S 2 were prepared and compared with RBPT antigen prepared from classical Brucella abortus S 99. A total of 54 sera samples, of which 7 were collected from humans with brucellosis and 47 from infected sheep, were studied by using RBPT and serum agglutination test (SAT). RBPT and SAT results showed that RBPT antigen...

Aim of the study was to evaluate the diagnostic performance of the Rose Bengal score test for Sjøgren's syndrome (SS), and to explore differences between other tests and examinations. All participants were examined, including (but not limited to) unstimulated (UWS) and stimulated (SWS) whole saliva, labial gland biopsy (LGB or focus score), ophthalmologic questionnaire (ocular surface disease i...

We compared the relative value of the tear film breakup time, Schirmer test, lactoferrin immunologic assay and rose bengal staining in 156 patients with varying severity of symptoms characteristic of keratoconjunctivitis sicca and in 39 controls. Statistical analysis showed that in patients with minimal ocular irritation the Schirmer test in combination with the lactoferrin immunologic assay pr...

The presence of antibodies was determined in the serum and cerebrospinal fluid in six patients with neurobrucellosis using the Rose Bengal test, the microdilution agglutination test, and the Coombs' test. Four of the patients were followed up for more than three months. The Rose Bengal test and the microagglutination test were positive in cerebrospinal fluid in five of the six cases at some sta...

MANY properties of proteins have been ascribed to adsorption phenomena and surface effects-grouped under the name of colloidal properties. Loeb [1922] and others have shown that many properties of proteins may be explained by the orthodox laws of chemical combination. In this paper an attempt is made to explain the effect of proteins on phthalein dyes as a chemical phenomenon. The interesting o...

Morphological changes of microvessels of cerebral cortex were evaluated in a model of cerebral infarction initiated by a photochemical reaction. Rats were treated with intravenous injection of rose Bengal and irradiated from a halogen lamp source through an intact cranium to precipitate microvascular damage. Investigations in transmission and scanning electron microscopy revealed platelet aggre...