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    Wyświetlanie 1-3 z 3
    Tytuł:
    Biological spectra of vegetation of Sathan Gali, Mansehra, KPK, Pakistan
    Autorzy:
    Khan, Khalid Rasheed
    Ishtiaq, Muhammad
    Iqbal, Zafar
    Alam, Jan
    Shah, Abbas Hussain
    Farooq, Muhammad
    Mehmood, Azhar
    Powiązania:
    https://bibliotekanauki.pl/articles/1179005.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biological spectrum
    Mansehra
    Pakistan
    Sathan Gali
    Therophytes
    Opis:
    The present study was carried out to assess the biological spectra of the existing vegetation of Sathan Galli, District Mansehra of Khyber Pakhtoonkhawa (KPK) Pakistan. In this study, area under investigation was divided into 33 stands on the basis of physiognomic characteristics of the vegetation. A total of 105 plant species of 55 families were recorded. The leaf size spectra was dominated by Microphyll contributing 68 species, followed by Mesophylls 45 species, Nanophyll 41 species, Macrophyll and Leptophylls l7 species. Therophytes were found as leading life form of the area encompassing 30.35% species, followed by Hemicryptophytes 20.23% and Megaphanerophytes 16.66%. The biological spectra indicating prevailing climatic conditions of the area and adaptation of vegetation to these conditions. The finding of current exploration revealed that Therophytes and Microphyll were dominant in the study area depicting heavy biotic pressure due to deforestation, over grazing and soil erosion.
    Źródło:
    World Scientific News; 2017, 87; 136-149
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity, phenology and biological spectrum of tree flora in upper Tanawal, district Mansehra, KP, Pakistan
    Autorzy:
    Farooq, Muhammad
    Anjum, Waleed
    Hussain, Manzoor
    Saqib, Zafeer
    Shah, Abbas Hussain
    Khan, Khalid Rasheed
    Nazir, Junaid
    Gul, Sagheer
    Powiązania:
    https://bibliotekanauki.pl/articles/1112996.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Floristic checklist
    Mansehra
    Pakistan
    Phanerogamic plants diversity
    Upper Tanawal
    Opis:
    Upper Tanawallies is in the middle of the Western part of Hazara division, and includes the remote areas of four districts i.e. Mansehra, Abbottabad, Haripur and Tor-Ghar, having latitude 34°.34.40´ N to 34°.48.88´ N and 72°.84.27´ E to 73°.10.50´ E longitude. This area is loaded with plant diversity, and tree species in this area vary in their life form, leaf spectra and phenological behavior. There is no prior record of plants diversity in the area, hence, this study was conducted to explore the tree diversity, life form, leaf spectrum and phenology of the tree flora. A total 127 sampling stands (10 x 10 m2) were put into place in different locations in Upper Tanawallies to collect field data using the quadrat method. As an outcome, we learned that the region hosts 53 different tree species of 39 genera belonging to 25 tree families. The biological spectra of the trees were constructed according to Raunkiaer (1934). Results showed that Mesophanerophytes was the dominant life form class, contributing 34 (64%) of all tree species encountered, while Mesophyll and Microphyll was the dominant leaf size spectrum classes, each contributing to a count of 18 (34%) of all tree species. Frequent field visits were also carried out during the flowering and fruiting seasons in 2016/17. The result indicates that most tree species of the area show flowering during April-May (32%) while, maximum fruiting were recorded in June-July (36%). Our study concludes that anthropogenic activities on these forests should be reduced to overcome deforestation. This work will be the baseline for new research in the study area.
    Źródło:
    World News of Natural Sciences; 2018, 16; 86-96
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FORMULATION AND EVALUATION OF INDOMETHACIN LOADED NANOSPONGES FOR ORAL DELIVERY
    Autorzy:
    Abbas, Nasir
    Sarwar, Komal
    Irfan, Muhammad
    Hussain, Amjad
    Mehmood, Rabia
    Arshad, Muhammad S.
    Shah, Pervaiz A.
    Powiązania:
    https://bibliotekanauki.pl/articles/895238.pdf
    Data publikacji:
    2018-10-31
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    sustained release
    indomethacin
    Nanosponges
    Emulsion solvent diffusion method
    Franz diffusion cell
    Opis:
    Nanosponges (NS) loaded sustained release tablet formulations of a non-steroidal anti-inflammatory drug; Indomethacin were successfully developed and evaluated for their pharmaceutical properties. Twelve nanosponge formulations were fabricated by solvent diffusion method by using different ratios of drug and polymers (ethyl cellulose and polyvinyl alcohol). Particle size of all the formulations was in the nano range of 221 to 625 nm and it was found dependent on the polymer concentration. Drug loading and entrapment efficiency was ranged in 32.2 to 59.4 % and 30.1 to 64.8 %, respectively. Formulations with equal proportion of drug and polymer resulted in higher values of drug loading and entrapment efficiency. Percent yield was also found dependent on the relative drug polymer ratio with highest value of 51 % was achieved for the formulation having same drug to polymer ratio. SEM results confirmed the formation of spherical and porous structures. Structural analysis by Fourier transform infrared spectroscopy (FTIR), powder x-ray diffraction (PXRD) showed the absence of any interaction between drug and polymer. In comparison to pure drug, NS formulations showed a linear intrinsic dissolution rate (IDR) profile depicting a controlled release profile. Diffusion studies of NS formulations performed by Franz diffusion cell and dialysis bag methods showed comparable results in terms of precision and linearity of diffusion profile. Tablets prepared from the drug loaded NS showed acceptable values for hardness, friability and drug content. Release of drug from NS tablets was confirmed as sustained release behaviour.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 5; 1201-1213
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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