324,285 research outputs found
Michael Kimmel on gender
No full textProduced by Sut Jhally.We've heard again and again that men and women are engaged in a 'battle of the sexes,' that we're so differently wired and so foreign to each other that we might as well come from different planets. In this powerful new lecture, renowned speaker and best selling author Michael Kimmel ... turns this conventional wisdom on its head. With clarity and humor, Kimmel moves beyond the popular inter-planetary notion that 'men are from Mars and women are from Venus' to advance a decidedly more Earth-bound and interconnected view of the things men and women have in common
Supplementation with resveratrol as Polygonum cuspidatum Sieb. et Zucc. extract induces changes in the excretion of urinary markers associated to aging in rats
No full textVariations of elements, pigments, amino acids and secondary metabolites in Vitis vinifera (L.) cv Garganega after 501 biodynamic treatment
No full textBackground: There is a need for new approaches in agriculture to improve safety of final products as well as to increase environmental acceptability. In this paper, the biodynamic preparation 501 (horn silica) was sprayed on Vitis vinifera (L.) cv Garganega plants in two vineyards located in Veneto region, North-East Italy. Leaf samples were collected on the day of 501-treatment and 11 days later, and berries were sampled at harvest time. Leaves and berries samples were analysed combining targeted and untargeted measurements related to primary metabolism (pigment, element and amino acid contents) and to secondary metabolism. Chlorophyll content in leaves, and amino acid and element (C, N, S) analysis in berries were combined with untargeted UPLC-QTOF metabolomics.Results: The discriminant compounds related to the 501-treatment were annotated on the basis of accurate MS and fragmentation and were identified as secondary metabolites, namely phenolic constituents belonging to the shiki-mate pathway. The level of most of the identified compounds increased in plants treated with 501 preparation.Conclusions: Results highlight the prominent value of the metabolomic approach to elucidate the role of the 501 applications on grapevine secondary metabolism
Rapport sut la météorologie de l'île Kerguelen, par le Rév. S.-J. Perry
No full textRapport sut la météorologie de l'île Kerguelen, par le Rév. S.-J. Perry. In: Le Globe. Revue genevoise de géographie, tome 19, 1880. p. 43
Rapport sut la météorologie de l'île Kerguelen, par le Rév. S.-J. Perry
No full textRapport sut la météorologie de l'île Kerguelen, par le Rév. S.-J. Perry. In: Le Globe. Revue genevoise de géographie, tome 19, 1880. p. 43
Preliminary evaluation of Quince (Cydonia oblonga Mill.) fruit as extraction source of antioxidant phytoconstituents for nutraceutical and functional food applications
No full textBackground
Quince (Cydonia oblonga) fruits can be considered as starting material for the extraction of health-promoting phytochemicals, to be exploited in food and nutraceuticals. In the present work, LC-DAD-MSn analysis allowed to study the phytochemical composition of quince fruits and to compare it with those of six commercial apple varieties.
Results
Distribution and quantification of secondary metabolites in peel and pulp was studied and compared with six commercial apple varieties. Furthermore the in vitro antioxidant activity was determined by DPPH assay. Quince fruit showed significant amounts of shikimic and quinic acid derivatives, as well as flavonoids and procyanidins. Compared with apple, quince composition is charachterized by the presence of 4-caffeoylshikimic acid, 4-caffeoyl quinic acid, quercetin-3,7-diglucoside, kaempferol-3-O-rhamnoside and kaempferol-7-O-glucoside, while the dihydrochalcones are not detectable. Considering fruit parts,3-O-Caffeoylquinic acid is the most abundant compound both in peels and the pulp. Pearson correlation index indicated a positive relationships between the amount of phenolic constituents and the radical scavenging activity toward DPPH• both for peels and pulps extracts.
Conclusions
This study highlighted the presence of significant amounts of valuable secondary metabolites in quince and in particular procyanidins and caffeoyl esters with shikimic and quinic acid. Notably, due to the higher content in phenolic compounds and the stronger antioxidant capacity compared to the other considered fruits, the use of C. oblonga as source of antioxidant can be valuable in nutraceuticals , showing new possible applications of quince fruit
A new step on the chemical profiles and pharmacological effects of three Scorzonera species (S. hieraciifolia, S. hispanica and S. tomentosa)
No full textThe genus Scorzonera is one of the most important genera in the Asteraceae family, and members of the genus have great potential in traditional medicine systems. In this article we aimed to determine skin protective and antimicrobial effects of different extracts from the roots and aerial parts of three Scorzonera species (S. hieraciifolia, S. hispanica, S. tomentosa). Antimicrobial properties were evaluated against different pathogen bacterial and fungal strains, whereas protective effects were studied in isolated mouse skin specimens exposed to hydrogen peroxide. In this biological model, the levels of l-dopa and prostaglandin E2 (PGE2) were evaluated, as markers of tyrosinase activity and inflammation, respectively. All extracts were effective in blunting the increased hydrogen peroxide-induced l-dopa turnover and PGE2 level; thus, suggesting skin protection that could be partly related to the content of flavonoids, among which rutin, in the tested extracts. Additionally, all extracts were effective as antibacterial and antifungal agents; intriguing results were observed against Trichoderma viride, which was particularly sensitive to S. tomentosa root extracts. Therefore, the present study strengthens the importance of investigating herbal preparations obtained from plants belonging to the genus Scorzonera, for the management and prevention of inflammatory and infectious skin conditions
Generating electricity in Malaysia using solar updraft tower (SUT)
No full textMUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.This paper presents the possibility
of generating electricity for a single house in
Malaysia using solar updraft tower (SUT). This
paper starts with the short introduction of SUT
and the advantages. Then followed with a table
that shows the temperature readings in Subang
Jaya, Malaysia to support the idea that SUT can be
a suitable way to generate electricity in Malaysia
because of the weather conditions. After that, the
design and construction of SUT and the
components are presented. Finally the results that
have been obtained on several experiments with
the solar updraft tower are also presented
Pengembangan Tebu Produk Rekayasa Genetik Sut Dengan Insersi Gen Sucrose Phosphate Synthase
No full textTebu produk rekayasa genetika SUT (PRG SUT) merupakan tebu overekspresi gen SoSUT1 yang diketahui mampu meningkatkan produksi Sucrose trasporter (SUT). SUT merupakan protein membrane yang berfungsi sebagai protein transporter sukrosa dari jaringan asimilasi ke jaringan penyimpanan. Peningkatan translokasi sukrosa harus di imbangi dengan peningkatan sintesis sukrosa di organ asimilasi. SoSPS1 merupakan gen pengkode Sucrose phosphate synthase yang merupakan enzim kunci dalam sintesis sukrosa di sitosol. Insersi gen SoSPS1 pada tebu Produk rekayasa genetika SUT dipandang perlu untuk mendapatkan tebu dengan sintesis sukrosa tinggi. Penelitian ini bertujuan untuk mendapatkan tanaman tebu produk rekayasa genetic SUT - SPS. Insersi gen SoSPS1menggunakan vektor Agrobacterium tumefaciens LBA4404 pembawa konstruk pKYS-SoSPS1. Parameter keberhasilan penelitian ini adalah terintegrasinya konstruk pKYS-SoSPS1 kedalam genon tanaman Tebu PRG SUT dengan uji ketahanan terhadap media seleksi antibiotik dan analisis PCR. Penelitian ini berhasil mendapatkan 10 tanaman tebu PRG SUT-SPS
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