The present studies were carried out to explore the vascular plant diversity and investigate the ethnobotanical potential and their conservation status in Ushairy Valley. The study area is located in District Dir (Upper) of the North West Frontier Province (NWFP), Pakistan. The area is gifted with diverse and unique flora because of the extension and representation of all the three mountain ranges i.e. Himalaya, Hindu Kash and Karakorum. The people are mostly poor and depend on plants for their domestic needs. Extensive exploration of Ushairy Valley shows that 562 angiosperm species are found here representing by 107 families (17 families of monocots and 90 families of dicots) and 343 genera. Among these families Asteraceae is the leading one with 50 species followed by Rosaceae with 35 species and Brassicaceae with 32 species. The gemnosperm are represented by 4 families with 9 genera and 11 species in which Pinaceae is the leading one with 6 species followed by Cupressaceae with 3 species. The Pteriodphyte represented by 37 species, 16 genera and 10 families in which the Dryopteridaceae is the leading one with 7 species and followed by Aspleniacaceae and Pteridaceae with 6 species each in Ushairy Valley. The collected species were identified, preserved and voucher specimens were deposited in the herbarium of Quaid-i-Azam University, Islamabad and Department of Botany, Islamia College Peshawar. The ethnobotanical information revealed that there are 26 different usage of 274 plant species in which 151 used as medicine, 57 fuelwood in which 16 species are preferred as a best quality fuel, 35 vegetable and pot herb, 16 fencing and hedges, 83 fodder in which 53 are herb, 11 are shrub and 19 are tree species, 15 furniture and 19 species are used as timber. Other ethnobotanical uses of plants in Ushairy Valley as, for making agricultural appliances used 12 spp., in thatching and roofing 14 spp., in making tooth brushes, 7 spp., as insect repellent, 5 spp., honeybee attractants, 19 spp., 8 spp. are used in spices and condiments, 9 spp., used in scorpion sting, dog and snake bite, 7 spp., used in snuff preparation and 19 spp., used in fish poisoning or considered as poison plants. 20 spp., are used as dye and for yielding oil, 36 spp., are edible fruits and seed producing plants, Ornamental plants are 9 and 10 spp., are used as veterinary medicines. The species Abies pindrow, Aesculus indica, Cedrus deodara, Ficus palmata, Pinus Roxburghii, Pinus wallichiana, Quercus spp., and Salix babylonica exhibit multiple uses. The part used data shows that mostly the leaves, whole plant, fruit and stem are in common use. There are 66 species belonging to 45 families used in different monoherbal and polyherbal recipes. It has been discovered that some species are no more available in their respective habitats due to over collection and has been threatened by unsustainable extraction, over grazing, cutting, deforestation and unawareness. One of the major causes of the degradation of forest is poverty that most of the people live below poverty line in hilly areas. Sustainable harvest of natural resources may help to partially alleviate poverty. Programmes for natural resources management must become integral parts of over all developments strategies. The conservation status of Ushairy Valley was evaluated through IUCN (1994-2001) modified criteria. Among these species, 18 are critically endangered, 14 are endangered, 16 are vulnerable and 8 are near threatened.
ڈاکٹر سید عبدالعلی افسوس ہے کہ آج قلم کو ایک ایسی برگزیدہ شخصیت کا ماتم کرنا پڑرہا ہے جو تنہا ایک شخص کا نہیں بلکہ علم و عمل کا ماتم ہے، دین و تقویٰ کا ماتم ہے، اخلاق و شرافت کا ماتم ہے، اس شخصیت کو دنیا ڈاکٹر سید عبدالعلی ناظمِ ندوۃ العلماء کے نام سے جانتی ہے، وہ تنہا ڈاکٹر یا ندوۃ العلماء کے ناظم نہ تھے، بلکہ اس زمانہ میں اپنے اوصاف، خصوصیات اور دینی و اخلاقی کمالات میں یگانہ تھے، ان کا نسبی تعلق مشہور عارف باﷲ حضرت سید شاہ علم اﷲ رحمتہ اﷲ علیہ رائے بریلوی کے خاندان سے تھا جس میں علم و عمل، دین و تقویٰ، فقر و تصوف اور ارشاد و ہدایت کی روایات صدیوں سے چلی آرہی تھیں، حضرت سید احمد شہید رحمتہ اﷲ علیہ اسی دووانِ عالی کے گوہر شب چراغ تھے۔ خاندان کی یہ ساری روایات ڈاکٹر صاحب مرحوم کے حصہ میں آئی تھیں، ان کے والد بزرگوار مولانا حکیم سید عبدالحئی صاحب رحمتہ اﷲ علیہ اپنے زمانہ کے مشہور عالم، نامور طبیب، اہل قلم فاضل اور صاحب زہد و تقویٰ بزرگ تھے، ڈاکٹر عبدالعلی صاحب ان کے خلف الصدق تھے، ان کی ذات قدیم و جدید تعلیم کا سنگم تھی، انہوں نے پہلے عربی اور طب کی تحصیل کی، اس کے بعد انگریزی پڑھی اور ڈاکٹری کی تعلیم حاصل کی، یہ وہ زمانہ تھا جب ڈاکٹروں کی زندگی مغرب زدگی اور انگریزی طرز معاشرت کا نمونہ ہوتی تھی، مگر ڈاکٹر عبدالعلی صاحب کی فطرت ایسی صالح و سلیم تھی اور ان کی رگوں میں ایسے بزرگوں کا خون تھا کہ جدید تعلیم کے مادی اثرات سے ان کا دامن بالکل پاک رہا، حتیٰ کہ ان کی ظاہری وضع قطع بھی خالص اسلامی رہی ناواقف لوگ ان کو دیکھ کر گمان نہیں کرسکتے تھے کہ ان کو...
Islam is considered to be the religion of nature due to its originality and suitability to human nature for all times or centuries. It continues to be successful in the developed world, and elsewhere, because its call is in accordance with the fitrah or natural inclinations of mankind. Allah, subhanahu wata'aala, is the creator of mankind and therefore knows his nature more intricately than mankind himself. Allah has therefore chosen for us a religion best suited to the nature of mankind, a religion that goes neither to the extremes of hardship nor of laxity, but instead provides a middle path; in other words, a religion of ease. Islam does not lay on people tasks that they cannot do or they will have difficulty in doing. Whenever, there is any difficulty performing any religious obligation faced by Muslims, they have provided an element of ease and comfort. In this regard, the focus of this paper is to throw light on the notion of ease and leniency of Islam.
The aim of the present work is to numerically simulate laminar forced convection in the fully developed flow through the finned annulus of a double-pipe subject to constant heat flux boundary condition (H1) and to investigate the effects of various geometric designs and arrangements of fins on the thermal performance of the finned duct. The designs of the finned annulus considered in the present work are longitudinal triangular fins with equal and unequal heights, and fins with variable fin-tip thickness. The governing partial differential equations of the convection problems are numerically solved by employing the finite element method (FEM) and the discontinuous Galerkin finite element method (DG-FEM). The hydraulic and thermal characteristics like the friction factor, the Nusselt number and the surface flow area goodness factor are studied against various geometric design parameters. Moreover, the validity of various assumptions in simpler models is investigated in more realistic models. The behaviour of the flow and thermal characteristics has been found to match with the physics of the problems and therefore, substantially validates the present simulations. For highly conductive triangular fins of equal heights, the results show upto more than 4 i times gain in the heat transfer rate relative to increase in the pressure loss because of the attachment of fins when the equivalent diameter is used as the characteristic length. Using fins in two groups of different heights, the velocity and temperature distributions can be significantly altered to have more favourable flow and thermal characteristics. For specified values of the number of fins, the thermal conductivity ratio and the size of the inner pipe, a combination of unequal heights of the two fin groups rendering maximum heat transfer coefficient exists in many cases. Such combinations of fin heights are very useful in reducing pressure loss and promoting heat transfer rate. The present study recommends the use of unequal fin heights depending on the cost, weight and heat duty requirements. For longitudinal fins with specified base angle and variable tip thickness, no single tip-angle renders maximum values of the heat transfer coefficient and surface flow area goodness factor for all values of the height and number of fins indicating that the choice of fin-tip angle strongly depends on the number of fins and their height. It is found that highly significant gain in the Nusselt number can be achieved by considering variation in the thickness of fin tip for various values of the conductivity parameter. This gain for trapezoidal fin is upto 38% over the triangular fin and 163% over the rectangular fin. Therefore, the consideration of the fin-tip thickness as a design parameter is significantly important for the optimal design of the present heat exchange system. All the computed results are in excellent comparison with the available literature results.