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اردو مصوتوں کا نظام

اردو مصوتوں کا نظام

کلام یا گفت گو کرتے ہوئے ایسی آوازیں جن کی ادائیگی میں منہ کے اندر کسی قسم کی رکاوٹ نہیں ڈالی جاتی، ان بغیر رگڑ یا رکاوٹ کے پیدا ہونے والی آوازوں کو مصوتے کہا جاتا ہے۔ بقول گوپی چند نارنگ:

’’وہ آوازیں جنہیں پیدا کرنے کےلیے ہواکےگزرنے کاراستہ نسبتاً کُھلا چھوڑدیاجاتاہے لیکن زبان اور ہونٹوں کی مختلف حرکات سے منہ کے اندرونی حصےکی شکل میں تغیر وتبدل کیاجاتاہے۔اس طرح پیداہونے والی آوازوں کو مصوتے کہاجاتاہے۔‘‘۵۱؎

مصوتے کو انگریزی زبان میں Vowelsاور عربی زبان میں حروفِ علت کہا جاتا ہے۔مصوتے کو اردو زبان میں سُر بھی کہتےہیں۔

مصوتوں کی ادائیگی کے دوران زبان کی تین طرح کی حرکت ہوتی ہے:

۱۔زبان کی نوک جب تالو کےسخت حصے کی طرف اٹھے اس طرح نکلنے والے مصوتے اگلے (Front) مصوتے کہلاتےہیں۔

۲۔جب زبان کا درمیانی حصہ اوپرتالو کی طرف اٹھے تو اس وقت پیدا ہونے والے مصوتوں کو مرکزی (Central) یا درمیانے مصوتے کہا جاتا ہے۔

۳۔ جب زبان کی جڑیاپچھلا حصہ اوپر نرم تالو کی طرف اٹھے تو اس وقت پیداہونے والے مصوتے پچھے (Back) مصوتے کہلاتےہیں۔

ان تین طریقوں سےپیدا ہونے والے مصوتوں کوماہرین لسانیات نے مختلف حصوں میں تقسیم کیاہے۔انگریزی زبان میں مصوتوں کی تعداد پانچ ہے۔ (a.e.i.o.u) انگریزی کے ان مصوتوں کوماہر لسانیات نےمزید ذیلی مصوتوں میں تقسیم کیاہے۔اردو میں مصوتوں کی تعداد مختلف ماہرین لسانیات نے مختلف لکھی ہے۔بقول ڈاکٹر محبوب عالم خان:

’’اردو کے دس اساسی مصوتوں کی نشان دہی ان بنیادی مصوتوں کے چوکٹھے میں زبان کی بلندی، جبڑوں کے فاصلے اور لبوں کی شکل کو مدِ نظر رکھتے ہوئے کی گئی ہے۔‘‘۵۲؎

منتخب جامعات میں ایم۔اے۔ اسلامیات کا نصاب برائے قرآنی علوم: ایک تقابل

Qur’anic Studies is one of the most important aspects of Islamic sciences. It is one of the primary sources of Islamic jurisprudence. This article aims at a comparative study in terms of effectiveness of the Syllabus and mode of Quranic studies at different universities i.e University of Karachi , Allama Iqbal Open University,The University of Punjab, International Islamic University Islamabad and Madina University KSA. The approach covers the methodology employed and problems involved in the imparting of Qur’anic knowledge in connection with Classical mode of Islamic education. The outcome would not only address, in a valid way, the problems of the current system, but will also benefit the scholars and young researchers striving and serving this noble knowledge at post graduate level

Surveillance and Management of Mosquito Species With Special Emphasis on the Dengue Vector S in Peshawar Valley

The present study was planned to investigate the population dynamics and habitats of economically important mosquito species with special emphasis on Aedes spp., the dengue vector in Peshawar Valley during 2011 - 2012. Data were collected from different habitat types in Peshawar, Nowshera, Mardan and Charsadda. Efficacy of different synthetic and natural insecticides as well as IGRs was tested in various concentrations against the mosquito species. In the irradiation experiments various doses of Cobalt 60 were tested to determine the optimum dose for causing male sterility in Aedes albopictus. The result revealed that population of Culex spp. was highest in Peshawar and lowest in Charsadda. The mean abundance of Aedes albopictus was highest in Mardan and lowest in Charsadda. Culex spp. populations peaked during September- October while Aedes spp. during October-November. Highest mean abundance (5300) of the specimen was found in sewage water and lowest in flower pots (11). At all the tested sites sewage water was found more favorable for breeding of Culex spp. while, irrigation channels, scrap, water tanks and pot vases for Aedes spp. The ovitrap index revealed higher population of Culex spp. in the indoor while that of Aedes spp. in the outdoor location. The indoor ovitrap index of Culex spp. was highest in Mardan (16.05%) and lowest in Peshawar (9.38%). The outdoor ovitrap index of Aedes spp. was highest in Nowshera (19.3%) and lowest in Charsadda (7.83%). The vector control In Vitro experiments showed significant differences in larval and adult mortalities as affected by the different synthetic insecticides, IGRs and plant extracts tested in various concentrations. Spatial variation in the mortality of both larvae and adults were observed in response to the insecticides. This variable response might be due to the intra-specie genetic variations from selection pressure of insecticides resulting into the development of resistance in the mosquitoes. The IGRs exhibited LC50 and LC90 in range of 0.002 to 0.016 ppm and 0.008 to 0.115 ppm, respectively. The IGRs yielded significant inhibition (79 to 99.5%) in adult emergence in the 3rd instars larvae of both Aedes and Culex spp. The IGRs were classified in terms of the tested parameters in order of Pyriproxyfen 1.0 WDG > Pyriproxyfen 0.5 WDG > Methoprene. In the field experiments, Pyriproxyfen 1.0 WDG @ 0.1g/m3 resulted in negligible adult emergence over a period of six months in water samples from different treated habitats. Crude plant extracts were tested for larvicidal activity against 3rd and 4th instars of Culex and Aedes spp. Parthenium showed lowest LC50 (0.849-1.543%), LC90 (1.875-2.882%) while Stevia extract the highest LC50 (2.086-2.889%), LC90 (5.836-8.533%) against the 3rd and 4th instar larvae of both the species after 24-48 hrs exposure periods. The larvicidal efficiency of plant extracts were ranked in order of Parthenium > Neem extract > Chrysanthemum > Neem oil > Stevia extract. The results of SIT experiments with Aedes albopictus revealed irradiation dose of 40-60 Gy as optimum for acceptable number of mating (7-8) of sterile males with wild female, negligible fecundity and subsequent hatching in no choice tests.
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