Reducing Marble-SO2 Reaction Rate by the Application of Certain Surfactants     

Böke  Hasan  Lal Gauri  K. 《Water, air, and soil pollution》2003,142(1-4):59-70

Sulfur dioxide (SO₂), prevalent in the modern urban environment of industrial countries, attacks calcite (CaCO₃)in marble. As a result, a gypsum (CaSO₄·2H₂O) crust is produced at rain-sheltered surfaces while areas exposed to rain experience accelerated erosion. We have investigated theeffect of certain surfactants as protective agents against SO₂ attack. We report that the anions oxalate (C₂O₄ ^-2) and oleate (C₁₇H₃₃COO^-) from solutions of their highly soluble alkali salt species areable to replace carbonate (CO₃ ^-2) in calcite producingless reactive substrate of oxalate and oleate of calcium. Experiments to measure the protection obtained by these treatments were carried out in the laboratory and field conditions at nearly 1ppm and 10 ppb SO₂ concentrations, respectively. We found that these treatments provided significantprotection to marble exposed in sheltered areas, up to 30% reduction of reaction rate by treatment with 2 × 10^-4M sodium oleate and up to 14% by a 2 × 10^-3 M with potassium oxalate solutions, but become ineffective over long term exposure when applied to surfaces exposed to rain.Carrara marble was used in the reported study. Ion chromatographywas the analytical tool, which allowed precise measurements of ionic concentrations of these salts, the amount of their uptakeby marble, and the thickness of the gypsum crust. X-ray diffraction allowed determination of the new minerals formed at the marble surface by the treatment with surfactants.  相似文献   

Erratum to: Binding profiles and cytokine-inducing effects of fish rhamnose-binding lectins on Burkitt’s lymphoma Raji cells     

Masahiro Hosono  Shigeki Sugawara  Atsushi Matsuda  Takeo Tatsuta  Yasuhiro Koide  Imtiaj Hasan  Yasuhiro Ozeki  Kazuo Nitta 《Fish physiology and biochemistry》2014,40(6):1957-1957

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Antitumor activity of epifriedelanol from Vitis trifolia.     

J K Kundu  A S Rouf  M N Hossain  C M Hasan  M A Rashid 《Fitoterapia》2000,71(5):577-579

The isolation and NMR spectral data of epifriedelanol from Vitis trifolia are reported. It demonstrated antitumor activity in a potato disc bioassay.  相似文献   

Changes in luteinizing hormone-containing gonadotrophs after moulting induced by fasting and zinc in laying hens (Gallus domesticus)     

M. A. Sandhu  Z. U. Rahman  I. J. Hasan  S. U. Rahman  M. S. Yousaf 《Journal of animal physiology and animal nutrition》2008,92(6):668-676

The purpose of the present study was to investigate egg production performance, immunohistochemical (IHC) identification, localization and morphological characterization of moulted hen’s pars distalis luteinizing hormone (LH) gonadotrophs. This system has been validated for chicken LH by immunodetection of purified hormones on dot blots, western blotting and by specific labelling of cells on sagittal sections of chicken pituitaries. This study showed that egg production and egg weight increased significantly after zinc-induced moult when compared with fasting-induced moult. Luteinizing hormone-gonadotrophs are of numerous shapes and distributed throughout the adenohypophysis, with densely populated regions on the margins of pars distalis. Moulting of laying hens was associated with a significant increase in immunoreactive LH gonadotroph cell count and cell size, which peaked at the subsequent production stages. Zinc-induced moulting also caused a significant increase in LH gonadotroph cell size as compared with fasting-induced moulting. The nuclear size of LH-positive cells was distinct during decreased egg production. Our results validate the use of ovine LHβ antibodies for the IHC localization of chicken LH gonadotrophs. This technology was further applied to the characterization of the shape and morphological changes of gonadotrophs as a function of the egg production status of the birds.  相似文献   

Characterization and pathogenicity of Rhizoctonia spp. isolated from winter squash in the Black Sea region of Turkey     

Ismail Erper  Melike Cebi Kilicoglu  Muharrem Turkkan  Hasan Onder 《European journal of plant pathology / European Foundation for Plant Pathology》2016,146(3):683-697

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Improving the Quality of Silver Carp Fish Fillets by Gamma Irradiation and Coatings Containing Rosemary Oil     

Mohammad Hasan Abdeldaiem  Hoda Gamal Mohammad  Mohamed Fawzy Ramadan 《Journal Of Aquatic Food Product Technology》2018,27(5):568-579

The objective of this work was to study the combined effect of gamma irradiation and coatings containing 0.5% rosemary (Rosmarinus officinalis) essential oil (RO) on the chemical, microbiological, and sensorial qualities of silver carp (Hypophthalmichthys molitrix) fish fillets (SFF) during cold storage (4°C). SFF were divided into three groups: uncoated (control), coated with edible coating (without additives), and γ-irradiated (0, 1, 3, and 5 kGy) coated with coating containing 0.5% rosemary. Gamma irradiation at 1, 3, and 5 kGy with coating reduced the initial total bacterial count, psychrophilic bacteria, and lactic acid bacteria and prolonged shelf life of the samples. Coated samples irradiated at 1 kGy reduced the counts of Enterobacteriaceae, Staphylococcus aureus, and Bacillus cereus, as well as eliminating Vibrio spp. and Salmonella spp., while coated samples irradiated at 3 and 5 kGy completely eliminated these bacteria. Combined treatment showed a slight increase in thiobarbituric acid-reactive substances postirradiation during cold storage but had no effect on the total volatile basic nitrogen and trimethylamine contents, while a gradual increase in these chemical quality indices was observed during cold storage. Combined treatment had no adverse effects on the sensory properties of SFF. The increase in the bacterial inhibitory effect is caused by both rosemary oil and irradiation.  相似文献   

Reactive Extraction of Phenol from Aqueous Solution Using Trioctylmethylammoniumchloride and Trioctylamine in Nonane and Isoamyl alcohol     

Hasan Uslu  Dipaloy Datta  Hisham S. Bamufleh 《Water, air, and soil pollution》2016,227(6):191

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Expression of the herpes simplex virus type 2 glycoprotein D in baculovirus expression system and evaluation of its immunogenicity in guinea pigs   总被引：1，自引：0，他引：1  

Fotouhi F  Soleimanjahi H  Roostaee MH  Dalimi Asl A 《Iranian Biomedical Journal》2008,12(2):59-66

Background: Herpes simplex virus type 2 (HSV-2) is highly prevalent and major cause of genital herpes in humans. The life-long nature of infection and the increasing prevalence of genital herpes imply that vaccination is the best strategy for controlling the spread of infection and limiting HSV disease. HSV glycoprotein D (gD) is one of the most important viral immunogen which has an essential role in virus infectivity and induction of immune responses. Methods: HSV-2 DNA was extracted and used as template in polymerase chain reactions to amplify gD2 gene. The PCR product was confirmed by restriction enzyme analysis, cloned into a cloning vector and then sequenced. The Bac-to-Bac expression system was used to express HSV-2 gD in insect cells. The expressed protein was used as subunit vaccine to immunize guinea pigs after confirmation. Results: The expressed protein was confirmed with SDS-PAGE and Western-blot analysis. In Western-blot analysis, two major protein bands, with approximate molecular weights of 52-55 and 41-43 kDa corresponding to the glycosylated and non-glycosylated forms of gD2 protein, were observed, respectively. Immunization with the recombinant gD2 could elicit humoral responses in guinea pigs as measured by neutralization test and ELISA, and offered high protection against induced HSV-2 genital disease. Conclusion: The baculovirus expression of heterologous genes permits proper folding, post-translational modification and oligomerization in manners that are often identical to those that occur in mammalian cells. Expression of proteins under the control of the strong polyhedrin promoter, allowing high level protein production, can be used as subunit vaccine.  相似文献   

Identification of wood‐decay fungi and assessment of damage in log depots of Western Black Sea Region (Turkey)     

Mesut Yal&#x;n  Hasan Hüseyin Doan  alar Akay 《Forest Pathology》2019,49(2)

The aim of this study was to determine and quantify the wood‐decay fungi found on logs of forest tree species (beech, oak, hornbeam, Scots pine and fir) stored in log depots located in six different provinces in the Western Black Sea Region of Turkey. Additionally, it was aimed to determine the natural durability of some important wood species against the most commonly detected wood‐decay fungi. Eighteen families, 31 genera and 45 species belonging to the division Basidiomycota were detected; Antrodia crassa was identified for the first time in Turkey. The abundance of Panus neostrigosus, Polyporus meridionalis, Trametes hirsuta, T. versicolor and Stereum hirsutumincreased significantly with the holding time of the logs (r = 0.99, 0.87, 0.53, 0.57 and 0.78, respectively, p < 0.05). The majority of the fungal species were detected on logs stored in depots for 4–6 years (66%). The percentage of fungal species found on the logs with a holding time of three years or less was 29%, whereas the percentage for those detected on logs stored for seven or more years was 31%. Among the wood species, the greatest number of fungal species (29) and highest amount of fungi (2,539) occurred on beech wood. Natural durability tests showed that T. versicolor caused the greatest loss of wood mass, with an average of 23%. Field studies and natural durability tests performed in the laboratory showed that beech wood lost the most mass among the timber species studied.  相似文献   

Clutch size decisions of <Emphasis Type="Italic">Cotesia glomerata</Emphasis>, a gregarious parasitoid of <Emphasis Type="Italic">Pieris brassicae</Emphasis>     

Fazil Hasan  M. Shafiq Ansari 《Phytoparasitica》2010,38(4):337-347

This work investigated the ability of the gregarious larval endoparasitoid Cotesia glomerata L. (Hymenoptera: Braconidae) to adjust the progeny sex ratio and clutch size with repeated oviposition experience and the effect of a honey-based diet on the clutch size. In the field-collected clusters many clusters were female-biased but some clusters (3.8%) produced only male wasps, suggesting that there is a low percentage of unmated females in the field. Superparasitism was common in the field, and females were believed to increase progeny sex ratio when attacking previously parasitized hosts. In the laboratory, the number of eggs laid in a day tended to decrease with increasing female age. For females that were offered two hosts per day and for those offered three hosts per day, this value became nearly the same at 9 days after the start of oviposition. Old females which attacked many hosts tended to lay fewer eggs in a day than young ones. However, the degree of this tendency was not the same for all the parasitoid females of all three groups because sperm remained viable throughout a female’s lifetime. The amount of sperm used in a single oviposition bout seemed fixed and was not dependent on the number of eggs laid. Over the 2 days of the clutch size response experiment, the number of hosts a female attacked per day was not affected by the presence or absence of honey.  相似文献