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Academic literature on the topic 'Tweed (Tissus)'

Author: Grafiati
Published: 26 July 2024
Last updated: 27 July 2024

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Journal articles on the topic "Tweed (Tissus)"

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Roux, Huguette, C. Paass, Konan Djaha, G. Agneroh-Eboi, and A. Aka. "Triangle de TWEED. Équilibre de la denture et des tissus mous. Étude sur une population de jeunes Ivoiriens." Revue d'Orthopédie Dento-Faciale 27, no. 3 (September 1993): 297–304. http://dx.doi.org/10.1051/odf/1993030.

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Meehan, J. T., R. C. Cutlip, and H. D. Lehmkuhl. "Evaluation of Ethylenediaminetetraacetic Acid, Tetrasodium Salt Dihydrate (EDTA)-Tween 20 Treatment versus Protease Digestion of Formalin-fixed Tissue Sections for Detection of Bovine Respiratory Syncytial Virus Antigen in Infected Ovine Lung." Veterinary Pathology 26, no. 4 (July 1989): 322–25. http://dx.doi.org/10.1177/030098588902600406.

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The efficacy of protease and ethylenediaminetetraacetic acid, tetrasodium salt dihydrate (EDTA)-Tween 20 in unmasking bovine respiratory syncytial virus (BRSV) antigens in formalin-fixed lung tissue was compared using avidin-biotin immunoperoxidase procedure. Tissues were taken from experimentally infected lambs. BRSV antigen stained in both techniques. Treatment with EDTA-Tween 20 resulted in more intense staining of BRSV infected cells, more uniform cytoplasmic staining, less non-specific background, and superior cellular detail in comparison to protease digestion.
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Lust, Cody A. C., Xinjie Lin, Erin M. Rock, Cheryl L. Limebeer, Linda A. Parker, and David W. L. Ma. "Short communication: Tissue distribution of major cannabinoids following intraperitoneal injection in male rats." PLOS ONE 17, no. 1 (January 19, 2022): e0262633. http://dx.doi.org/10.1371/journal.pone.0262633.

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Currently, peripheral tissue distribution of cannabinoids after treatment is poorly understood. This pilot study sought to examine the early tissue distribution of major cannabinoids 30 minutes following an intraperitoneal injection of vehicle (1:9 Tween 80/SAL), and doses of THC (1 mg/kg) and CBD (5 mg/kg) that are feasible for human consumption in serum, adipose, brain, lung, liver, jejunum, and muscle of male Sprague-Dawley rats. The jejunum and adipose were most enriched in THC. Similarly, CBD was enriched in the jejunum and adipose but also the liver. In contrast, the brain had the lowest concentration of cannabinoids relative to other tissues. The liver had the greatest concentration of the THC metabolites, 11-OH-THC and COOH-THC, compared to all other tissues. Overall, these findings highlight broad tissue distribution and marked differences in tissue concentration not previously appreciated. Thus, as cannabinoid research continues to rapidly grow, consideration of the potential bioactive effects of these molecules in peripheral tissues is warranted in future studies.
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Lownds, N. K., and M. J. Bukovac. "Surfactant-induced Ethylene Production by Leaf Tissue." Journal of the American Society for Horticultural Science 114, no. 3 (May 1989): 449–54. http://dx.doi.org/10.21273/jashs.114.3.449.

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Abstract Ethylene evolution induced by nonionic (Triton X-100, Triton X-405, Tween 20, Ortho X-77 and Regulaid), anionic (Aerosol OT and Dupanol ME), and cationic (Arquad C-50 and Arquad 2C-75) surfactants was characterized using cowpea [Vigna unguiculata (L.) Walp. supsb. unguiculata ‘Dixielee’] seedlings. Representative surfactants of each ionogenic class induced ethylene evolution. Time course studies revealed an increased rate of ethylene evolution during the first 6 to 12 hr after treatment, followed by a slow decrease for the next 12 to 36 hr, and a return to control levels within 48 hr. Ethylene production induced by Triton X-100 increased with increasing concentration, while Tween 20 did not induce ethylene at concentrations up to 1.0%. Surfactants that promoted ethylene evolution also generally induced visible phytotoxicity. Phytotoxicity symptoms increased with increasing time after treatment. Surfactant-induced ethylene production and phytotoxicity were observed with corn (Zea mays L. ‘B73 × MO17’), wheat (Triticum aestivum L. ‘Hillsdale’), soybean (Glycine max Merr. ‘McCall’), apple (Malus domestica Borkh. ‘Golden Delicious’), and sour cherry (Prunus cerasus L. ‘Montmorency’). Tween 20, nonactive on cowpea, induced ethylene and phytotoxicity when applied to the abaxial surface of sour cherry leaves. Chemical names used: octyl-phenoxypoly(ethoxy)ethanol (Triton X-100 and X-405), polyoxyethylene sorbitan monolaurate (Tween 20), alkylaryl polyoxyethylene glycols/free fatty acids/isopropanol (Ortho X-77), polyoxyethylenepolypropoxypropanol alkyl 2-ethoxyethanol/dihydroxy-propane (Regulaid), diocytl sodium sulfosuccinate (Aerosol OT), sodium lauryl sulfate (Dupanol ME), monococo trimethyl ammonium chloride (Arquad C-50), dicoco dimethyl ammonium chloride (Arquad 2C-75).
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Lu, Huihui, Francesco Floris, Marc Rensing, and Stefan Andersson-Engels. "Fluorescence Spectroscopy Study of Protoporphyrin IX in Optical Tissue Simulating Liquid Phantoms." Materials 13, no. 9 (May 2, 2020): 2105. http://dx.doi.org/10.3390/ma13092105.

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Fluorescence spectroscopy has been extensively investigated for disease diagnosis. In this framework, optical tissue phantoms are widely used for validating the biomedical device system in a laboratory environment outside of clinical procedures. Moreover, it is fundamental to consider that there are several scattering components and chromophores inside biological tissues and the interplay between scattering and absorption may result in a distortion of the emitted fluorescent signal. In this work, the photophysical behaviour of a set of liquid, tissue-like phantoms containing different compositions was analysed: phosphate buffer saline (PBS) was used as the background medium, low fat milk as a scatterer, Indian ink as an absorber and protoporphyrin IX (PpIX) dissolved in dimethyl formamide (DMF) as a fluorophore. We examined the collected data in terms of the impact of surfactant Tween-20 on the background medium, scattering effects and combination of scattering and absorption within a luminescent body on PpIX. The results indicated that the intrinsic emission peaks are red shifted by the scattering particles or surfactant, whilst the scattering agent and the absorbent can alter the emission intensity substantially. We corroborated that phantoms containing higher surfactant content (>0.5% Tween 20) are essential to prepare stable aqueous phantoms.
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Morita, Tetsuo, and Tatsuo Shimada. "Surface morphology of Purkinje cells and myocardial cells following chemical digestion." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 3 (August 12, 1990): 420–21. http://dx.doi.org/10.1017/s0424820100159643.

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From light and transmission electron microscopic studies, it has been long known that Purkinje cells of mammalian hearts have morphological characteristics different from ordinary myocardial cells. In the present study, not only Purkinje cells and myocardial cells but also connective tissue sheaths surrounding these cells were investigated by combined scanning electron microscopy(SEM) and chemical digestion.The moderator band of adult sheep heart was used because it possessed both Purkinje cells and myocardial cells (Fig.1). Tissue blocks were immersed in Karnovsky’s fixative for 3hr or longer. Some fixed tissues were inrrtersed in a 3-5% aqueous solution of NaClO for 1 min to digest the endocardial endothelium, and then were treated with 8N HCl for 30 min at 60°C to remove connection tissue elements. The others were iirmersed in a 2N NaOH or KOH solution for 7 days at room temperature to digest cellular elements. After freeze-cracking in a 40% dimethyl sulfoxide solution, the tissues were washed throughout in a saline solution containing tween 20, placed in a 1% aqueous solution of tannic acid for 2hr and conductive-stained with 1% OsO4 for 2hr.
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Gagné, François. "Isolation and Quantification of Polystyrene Nanoplastics in Tissues by Low Pressure Size Exclusion Chromatography." Journal of Xenobiotics 12, no. 2 (May 9, 2022): 109–21. http://dx.doi.org/10.3390/jox12020010.

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Ecotoxicity investigations of plastic nanoparticles (NPs) should pay more attention to their ability to pass barriers, accumulate, and initiate toxicity in cells. The purpose of this study was to develop a simple size exclusion chromatography (SEC) methodology to measure plastic NPs in biological tissues. A SEC column was prepared using a high-resolution gel for large macromolecules to separate plastic NPs from the protein/lipid pools in tissues. It was necessary to prepare the samples in high salt and non-ionic detergent (0.5 M NaCl and 0.2% Tween-20) and apply 0.2% Tween-20 containing 14 mM NaCl for the elution buffer to limit proteins adsorption to NPs. This methodology was able to resolve 50 and 100 nm polystyrene NPs from the protein/lipid pools in tissue homogenates. The fluorescent dye neutral red (NR) was also used for transparent NPs. Moreover, a sample fractionation step was also proposed for plastic NPs concentration using a salting-out methodology with saturated NaCl (5 M) and acetonitrile. Polystyrene NPs partition in acetonitrile, which were further analyzed by SEC. This methodology was tested in two case studies with clams collected in a high boat traffic (harbor) area and with caged freshwater mussels downstream of a large urban area. Although the present methodology was developed with polystyrene NPs it should be amenable to other plastic polymers that react with the NR fluorescent probe.
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Kshitiza, Pathak, and Pathak Akshay. "CROSS-SECTIONAL ASSESSMENT OF ASSOCIATION BETWEEN GRADE OF AS-THI SARATA AND INCIDENCE OF DENTAL CARIES." International Ayurvedic Medical Journal 8, no. 8 (August 18, 2020): 4032–35. http://dx.doi.org/10.46607/iamj0108082020.

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Dashavidha Karanadi Pariksha (Ten-fold examination) elaborated in Charaka Samhita imparts complete knowledge of patient’s condition by means of specific investigations. It is done for knowledge of lifespan, degree of strength of body and disease and exact treatment perspective. Accordingly, a patient should be examined in respect of Dhatu Sarata (excellence of body tissues) i.e. as per the best qualities of Dhatu (body tissues). Drudh Danta (strongness of teeth) has been described as a characteristic of Asthi Sarata. Thus, an observational cross-sectional study was planned to assess the probable association between grada-tion of Asthi Sarata (excellence of Asthi Dhatu-bone tissue) as Uttama (excellent) -Madhyama (moderate)-Heena (poor) and incidence of dental caries. Total 200 volunteers were assessed for their grade of Asthi sarata (excellence of Asthi Dhatu-bone tissue) with the help of a questionnaire related to general descrip-tion of Asthi Sara Purusha (person with excellence of bone tissue) as per Charaka Samhita. Dental inspec-tion of each participant was done to check for presence and absence of dental caries. The association be-tween Sarata grade of each individual and incidence of dental caries was established by statistical analysis. Statistical tests showed that Asthi – Sarata (excellence of Asthi Dhatu-bone tissue) and occurrence of den-tal caries were dependent of each other.
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Bytov, Maksim V., Irina M. Petrova, Sergey L. Khatsko, Olga V. Sokolova, and Irina A. Shkuratova. "Protocol refinement for quenching autofluorescence of red blood cells in FFPE sections of organ samples from cattle, pigs and chickens." BIO Web of Conferences 108 (2024): 01034. http://dx.doi.org/10.1051/bioconf/202410801034.

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One of the most common problem that researchers encounter when using fluorescence to visualize immunohistochemistry is the autofluorescence of the studied organ tissue sections and cell cultures. Autofluorescence quenching is necessary for a wide variety of organs and tissues, as well as for different methods of fixation and histochemical processing of sections. In addition to autofluorescence quenching, it is necessary to take into account the need for histological readability of tissue sections when using counterstains afterwards. Such protocol refinement for fluorescent immunohistochemistry for chicken, porcine and cattle tissues was carried out for the first time, as well as the use of a dimethyl sulfoxide (DMSO) solution with ethanol as Sudan Black B (SBB) solvent. Incubation of sections in SBB was chosen as the simplest and most nonspecific one. The most effective dissolution of the dye is achieved at a concentration of 0.3% SBB in a solution of 70% ethanol and absolutized DMSO in a 4:1 v/v ratio. The most thorough removal of SBB solution excess is achieved by rinsing the sections 5 times with 70% ethanol and then rinsing the sections with TBST (tris-buffered saline and Tween-20) buffer 5 times.
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Chuanlai, X., P. Cifang, H. Kai, J. Zhengyu, and W. Wukang. "Quantitative analysis of chloramphenicol residues in shrimp muscle tissues by Chemiluminescent enzyme immunoassay." Czech Journal of Food Sciences 23, No. 6 (November 15, 2011): 251–56. http://dx.doi.org/10.17221/3399-cjfs.

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A competitive indirect chemiluminescent enzyme immunoassay (ic-CLEIA) has been developed for the determination of chloramphenicol (CAP) residues in shrimp. After the optimisation of four physico-chemical parameters, i.e. incubation time, concentration of Tween-20, concentration of PBS and its pH, the method developed gave a limit of detection of 0.01 ng/ml and a detection range from 0.03 ng/ml to 23.7 ng/ml, with an ED<sub>50</sub> of 0.47 ng/ml. The developed method has been validated on spiked shrimp samples in terms of precision (intra- and interassay coefficient variations of less than 10% and 15%, respectively), and of accuracy (mean recovery from 95% to 123%). All these parameters being better than those of the ELISA method which is widely used to detect chloramphenicol, it may be suggested that the CLEIA method can be used to detect aquatic samples instead of ELISA. &nbsp;
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Books on the topic "Tweed (Tissus)"

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Tweed. Bloomsbury Academic, an imprint of Bloomsbury Publishing Plc, 2017.

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Tweed. Bloomsbury Publishing Plc, 2016.

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Tweed. Bloomsbury Publishing Plc, 2016.

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Book chapters on the topic "Tweed (Tissus)"

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Cumming, Riciiard, and Rachel Fallon. "Subcellular Localization of Biological Molecules." In Radioisotopes in Biology, 207–42. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780199630806.003.0007.

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Abstract The complexity of higher organisms is due in part to the wide variety of tissues and cells which have become specialized for different functions. Cells can often be differentiated from each other on the basis of size, shape, fine structural differences and on the basis of phenotypic molecular markers. Techniques such as tissue culture can help to elucidate the function of individual cell types by growing them and manipulating them under controlled conditions. A further degree of complexity comes from the organization of structures within the cell; at the simplest level we can divide the cell into nucleus and cytoplasm, while sophisticated techniques allow distinction be tween many different structures such as mitochondria, lyzosomes, ribosomes, etc. It is now widely appreciated that these structures perform varied cellular functions and that different molecules are localized within different subcellular compartments (e.g. neuronal compartmentation of cytoskeletal proteins) (1). In addition to the well-known movement of nucleic acids between the nucleus and the cytoplasm, it is now known, for example, that trans\ocation of specific molecules from one region of the cell to another appears to represent the mechanism of action of molecules including steroids, cyclic nucleotides and receptors.
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Conference papers on the topic "Tweed (Tissus)"

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"Hepatoprotective Effect of Typhonium flagelliforme against Thioacetamide Induced Liver Cirrhosis in Rats." In 4th International Conference on Biological & Health Sciences (CIC-BIOHS’2022). Cihan University, 2022. http://dx.doi.org/10.24086/biohs2022/paper.643.

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Typhonium flagelliforme (T. flagelliforme) was utilized in outdated medication for handling numerous syndromes. This study aimed to investigate hepatoprotection effects of T. flagelliforme against thioacetamide (TAA) hepatotoxicity in rodents.Thirty rodents arbitrarily separated five clusters. Collection 1 was intraperitoneally injected distilled water thrice /week and fed (p.o) daily with 10% Tween 20 to eight weeks. Collection 2-5 i.p. injected with 200 mg/kg TAA three times thrice per week for 8 weeks and fed 10% Tween 20, 50 mg/kg silymarin, 250 and 500 mg/kg of T. flagelliforme extract daily for 8 weeks, respectively.Hepatotoxic assembly showed suggestively rise hepatic biochemistry markers together with a considerable lessening of proteins and albumin compared to normal assemblage. The hepatotoxic group displayed decreased catalase and superoxide dismutase activities and increase lipid peroxidation. Macroscopy of hepatotoxic liver exhibited irregular, rough surface with micro and macro nodules, and histopathology-stained Hematoxylin and Eosin, and Masson’s Trichome exhibited inflammation infiltration of lymphocytes, focal necrosis, fibrosis, and bile duct propagation.T. flagelliforme fed clusters have expressively reduced TAA toxicity in gross and histology as designated by fewer disturbances of hepatic tissue, slight fibrosis, and low-grade cells infiltration. Thus, our results showed that the hepatoprotective effect of this plant might be due to reduce toxicity, inhibition of hepatocytes proliferation, decrease enzyme markers, increase protein and albumin, increased endogenous enzymes, and reduced lipid peroxidation level.
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Harris, R., L. Garcia Frade, S. Poole, M. Mahmoud, A. D. Curtis, and P. J. Gaffney. "CATABOLIC BEHAVIOUR OF RECOMBINANT TISSUE PLASMINOGEN ACTIVATOR (R-t-PA) IN THE RAT." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643175.

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To compliment ongoing experimentation on the use of tissue plasminogen activator (t-PA) as a thrombolytic agent in a rat thrombosis model, clearance data for labelled R-t-PA in the rat were investigated. Both Iodogen and Chloramine T labelling procedures for incorporation yielded similar biological activity in the resultant labelled t-PA, while the half-lives in the rat circulation for Iodogen- and Chloramine T-label led materials were 5 1/2 and 7 1/2 minutes respectively. Clearance data using promoter based and ELISA assays support that obtained with 125j_ labelled t-PA. Following fractionation of various timed rat plasma samples by HPLC on a gel exclusion column (TSK G-3000 SW), 90% of the labelled t-PA was distributed between two inhibitor/t-PA complex peaks m the 1 minute sanple. One of these peaks (about 30% of labelled t-PA) was compatible with a t-PA/ PAI-1 complex, having a molecular weight of about 120,000, while the other (comprising about 60% of labelled t-PA) had a molecular weight of about 350,000 and was undetectable by ELISA, bioimmunoassay or fibrin plate assay, while showing low activity by a promoter-type t-PA assay. The two major activity peaks in these HPLC profiles of rat plasma were associated with low levels of radiolabelled t-PA and were compatible with free t-PA and a complex of t-PA having a molecular weight of about 200,000. It was observed that free t-PA was retarded during the HPLC column separations and eluted as a broad trailing peak despite the presence of 0.1% - 0.5% Tween-80 in the column. Thus molecular weights of the various complexes formed are subject to further examination. All three t-PA peaks had the same initial half-life of 2-3 minutes. Since about 60% of the t-PA is contained in the high molecular weight inhibitor complex, we propose that the formation of this complex may be a major mechanism by which t-PA is cleared from the rat circulation, despite inactive catabolic breakdown products reappearing in the circulation following clearance of these complexes.
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